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Artykuły w czasopismach na temat „Non-stationary tide”

Autor: Grafiati
Data publikacji: 18 listopada 2022
Data aktualizacji: 21 grudnia 2022

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1

Manson, A. H., C. E. Meek, T. Chshyolkova, X. Xu, T. Aso, J. R. Drummond, C. M. Hall i in. "Arctic tidal characteristics at Eureka (80° N, 86° W) and Svalbard (78° N, 16° E) for 2006/07: seasonal and longitudinal variations, migrating and non-migrating tides". Annales Geophysicae 27, nr 3 (9.03.2009): 1153–73. http://dx.doi.org/10.5194/angeo-27-1153-2009.

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Abstract. Operation of a Meteor Radar at Eureka, Ellesmere Island (80° N, 86° W) began in February 2006. The first 12 months of wind data (82–97 km) are combined with winds from the Adventdalen, Svalbard Island (78° N, 16° E) Meteor Radar to provide the first contemporaneous longitudinally spaced observations of mean winds, tides and planetary waves at such high Arctic latitudes. Unique polar information on diurnal non-migrating tides (NMT) is provided, as well as complementary information to that existing for the Antarctic on the semidiurnal NMT. Zonal and meridional monthly mean winds differed significantly between Canada and Norway, indicating the influence of stationary planetary waves (SPW) in the Arctic mesopause region. Both diurnal (D) and semi-diurnal (SD) winds also demonstrated significantly different magnitudes at Eureka and Svalbard. Typically the D tide was larger at Eureka and the SD tide was larger at Svalbard. Tidal amplitudes in the Arctic were also generally larger than expected from extrapolation of high mid-latitude data. For example time-sequences from ~90 km showed D wind oscillations at Eureka of 30 m/s in February–March, and four day bursts of SD winds at Svalbard reached 40 m/s in June 2006. Fitting of wave numbers for the migrating and non-migrating tides (MT, NMT) successfully determines dominant tides for each month and height. For the diurnal tide, NMT with s=0, +2 (westward) dominate in non-summer months, while for the semi-diurnal tide NMT with s=+1, +3 occur most often during equinoctial or early summer months. These wave numbers are consistent with stationary planetary wave (SPW)-tidal interactions. Assessment of the global topographic forcing and atmospheric propagation of the SPW (S=1, 2) suggests these winter waves of the Northern Hemisphere are associated with the 78–80° N diurnal NMT, but that the SPW of the Southern Hemisphere winter have little influence on the summer Arctic tidal fields. In contrast the large SPW and NMT of the Arctic winter may be associated, consistent with Antarctic observations, with the observed occurrence of the semidiurnal NMT in the Antarctic summer.
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Carrere, Loren, Brian K. Arbic, Brian Dushaw, Gary Egbert, Svetlana Erofeeva, Florent Lyard, Richard D. Ray i in. "Accuracy assessment of global internal-tide models using satellite altimetry". Ocean Science 17, nr 1 (19.01.2021): 147–80. http://dx.doi.org/10.5194/os-17-147-2021.

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Abstract. Altimeter measurements are corrected for several geophysical parameters in order to access ocean signals of interest, like mesoscale or sub-mesoscale variability. The ocean tide is one of the most critical corrections due to the amplitude of the tidal elevations and to the aliasing phenomena of high-frequency signals into the lower-frequency band, but the internal-tide signatures at the ocean surface are not yet corrected globally. Internal tides can have a signature of several centimeters at the surface with wavelengths of about 50–250 km for the first mode and even smaller scales for higher-order modes. The goals of the upcoming Surface Water Ocean Topography (SWOT) mission and other high-resolution ocean measurements make the correction of these small-scale signals a challenge, as the correction of all tidal variability becomes mandatory to access accurate measurements of other oceanic signals. In this context, several scientific teams are working on the development of new internal-tide models, taking advantage of the very long altimeter time series now available, which represent an unprecedented and valuable global ocean database. The internal-tide models presented here focus on the coherent internal-tide signal and they are of three types: empirical models based upon analysis of existing altimeter missions, an assimilative model and a three-dimensional hydrodynamic model. A detailed comparison and validation of these internal-tide models is proposed using existing satellite altimeter databases. The analysis focuses on the four main tidal constituents: M2, K1, O1 and S2. The validation process is based on a statistical analysis of multi-mission altimetry including Jason-2 and Cryosphere Satellite-2 data. The results show a significant altimeter variance reduction when using internal-tide corrections in all ocean regions where internal tides are generating or propagating. A complementary spectral analysis also gives some estimation of the performance of each model as a function of wavelength and some insight into the residual non-stationary part of internal tides in the different regions of interest. This work led to the implementation of a new internal-tide correction (ZARON'one) in the next geophysical data records version-F (GDR-F) standards.
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D’Arcy, Eleanor, Jonathan A. Tawn i Dafni E. Sifnioti. "Accounting for Climate Change in Extreme Sea Level Estimation". Water 14, nr 19 (21.09.2022): 2956. http://dx.doi.org/10.3390/w14192956.

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Extreme sea level estimates are fundamental for mitigating coastal flooding as they provide insight for defence engineering. As the global climate changes, rising sea levels combined with increases in storm intensity and frequency pose an increasing risk to coastline communities. We present a new method for estimating extreme sea levels that accounts for the effects of climate change on extreme events that are not accounted for by mean sea level trends. We follow a joint probabilities methodology, considering skew surge and peak tides as the only components of sea levels. We model extreme skew surges using a non-stationary generalised Pareto distribution (GPD) with covariates accounting for climate change, seasonality and skew surge–peak tide interaction. We develop methods to efficiently test for extreme skew surge trends across different coastlines and seasons. We illustrate our methods using data from four UK tide gauges and estimate sea level return levels when accounting for these long-term trends.
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Das, Uma, William E. Ward, Chen Jeih Pan i Sanat Kumar Das. "Migrating and non-migrating tides observed in the stratosphere from FORMOSAT-3/COSMIC temperature retrievals". Annales Geophysicae 38, nr 2 (31.03.2020): 421–35. http://dx.doi.org/10.5194/angeo-38-421-2020.

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Abstract. Formosa Satellite-3 and Constellation Observing System for Meteorology, Ionosphere and Climate (FORMOSAT-3/COSMIC) temperature data during October 2009–December 2010 are analysed for tides in the middle atmosphere from ∼10 to 50 km. COSMIC is a set of six micro-satellites in near-Sun-synchronous orbits with 30∘ orbital separations that provides good phase space sampling of tides. Short-term tidal variability is deduced by considering ±10 d data together. The migrating diurnal (DW1) tide is found to peak over the Equator at 30 km. It maximises and slightly shifts poleward during winters. Over middle and high latitudes, DW1 and the non-migrating diurnal tides with wavenumber 0 (DS0) and wavenumber 2 (DW2) are intermittent in nature. Numerical experiments in the current study show that these could be a result of aliasing as they are found to occur at times of a steep rise or fall in the mean temperature, particularly during the sudden stratospheric warming (SSW) of 2010. Further, the stationary planetary wave component of wavenumber 1 (SPW1) is found to be of very large amplitudes in the Northern Hemisphere, reaching 18 K at 30 km over 65∘ N. By using data from COSMIC over shorter durations, it is shown that aliasing between stationary planetary wave and non-migrating tides is reduced and thus results in the large amplitudes of the former. This study clearly indicates that non-linear interactions are not a very important source for the generation of non-migrating tides in the middle- and high-latitude winter stratosphere. There is also a modulation of SPW1 by a ∼60 d oscillation in the high latitudes, which was not seen earlier.
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Falanga, Mariarosaria, Enza De Lauro, Simona Petrosino i Salvatore De Martino. "Interaction between seismicity and deformation on different time scales in volcanic areas: Campi Flegrei and Stromboli". Advances in Geosciences 52 (5.12.2019): 1–8. http://dx.doi.org/10.5194/adgeo-52-1-2019.

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Abstract. We study oscillations recorded at Stromboli and Campi Flegrei by different sensors: seismometers, strainmeters and tiltmeters. We examine both the high-frequency (>0.5 Hz) portion of the spectrum and very long period signals up to tidal scales. In this context, seismicity and deformation are investigated on different time scales (from minutes to days/years) in order to identify the basic elements of their interaction, whose understanding should provide new insights on the predictive models. In this work, the strict relation of tides and volcanic processes is shown. At Stromboli, indeed the transition from the stationary phase to the non-stationary phase seems to have a tidal precursor that is related to the duration of the crisis. The subsequent volcanic activity is interpreted as the response of the volcano to restore the equilibrium condition. The moveout from equilibrium produces, first, variations in the standard statistics of explosions, then leads to effusive stage and to a pressure drop in the shallow feeding system. That process induces the nucleation of a gas bubble and the excitation of low frequencies. Campi Flegrei seismicity shows a correlation between the diurnal solar solid tide and the energy released by the long period signals, indicating that the whole mechanism is modulated on a tidal scale. In other words, in the case of Stromboli, a departure from the equilibrium state is marked by solid tide variations in a certain frequency band. On the other hand, at Campi Flegrei diurnal to annual solid tides modulate an increase of volcanic activity.
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6

Zoppetti, F. A., H. Folonier, A. M. Leiva i C. Beaugé. "Creep tide model for the three-body problem". Astronomy & Astrophysics 651 (lipiec 2021): A49. http://dx.doi.org/10.1051/0004-6361/202140957.

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We present a tidal model for treating the rotational evolution in the general three-body problem with arbitrary viscosities, in which all the masses are considered to be extended and all the tidal interactions between pairs are taken into account. Based on the creep tide theory, we present a set of differential equations that describes the rotational evolution of each body, in a formalism that is easily extensible to the N tidally interacting body problem. We apply our model to the case of a circumbinary planet and use a Kepler-38 like binary system as a working example. We find that, in this low planetary eccentricity case, the most likely final stationary rotation state is the 1:1 spin–orbit resonance, considering an arbitrary planetary viscosity inside the estimated range for the Solar System planets. The timescales for reaching the equilibrium state are expected to be approximately millions of years for stiff bodies but can be longer than the age of the system for planets with a large gaseous component. We derive analytical expressions for the mean rotational stationary state, based on high-order power series of the ratio of the semimajor axes a1∕a2 and low-order expansions of the eccentricities. These are found to very accurately reproduce the mean behaviour of the low-eccentric numerical integrations for arbitrary planetary relaxation factors, and up to a1∕a2 ~ 0.4. Our analytical model is used to predict the stationary rotation of the Kepler circumbinary planets and we find that most of them are probably rotating in a subsynchronous state, although the synchrony shift is much less important than our previous estimations. We present a comparison of our results with those obtained with the Constant Time Lag and find that, as opposed to the assumptions in our previous works, the cross torques have a non-negligible net secular contribution, and must be taken into account when computing the tides over each body in an N-extended-body system from an arbitrary reference frame. These torques are naturally taken into account in the creep theory. In addition to this, the latter formalism considers more realistic rheology that proved to reduce to the Constant Time Lag model in the gaseous limit and also allows several additional relevant physical phenomena to be studied.
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7

Lühr, H., i C. Manoj. "The complete spectrum of the equatorial electrojet related to solar tides: CHAMP observations". Annales Geophysicae 31, nr 8 (5.08.2013): 1315–31. http://dx.doi.org/10.5194/angeo-31-1315-2013.

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Abstract. Based on 10 yr of magnetic field measurements by the CHAMP satellite we draw a detailed picture of the equatorial electrojet (EEJ) tidal variations. For the first time the complete EEJ spectrum related to average solar tides has been compiled. A large fraction of the resulting spectrum is related to the switch on/off of the EEJ between day and night. This effect has carefully been considered when interpreting the results. As expected, largest amplitudes are caused by the migrating tides representing the mean diurnal variation. Higher harmonics of the daily variations show a 1/f fall-off in amplitude. Such a spectrum is required to represent the vanishing of the EEJ current at night. The migrating tidal signal exhibits a distinct annual variation with large amplitudes during December solstice and equinox seasons but a depression by a factor of 1.7 around June–July. A rich spectrum of non-migrating tidal effects is deduced. Most prominent is the four-peaked longitudinal pattern around August. Almost 90% of the structure can be attributed to the diurnal eastward-propagating tide DE3. In addition the westward-propagating DW5 is contributing to wave-4. The second-largest non-migrating tide is the semi-diurnal SW4 around December solstice. It causes a wave-2 feature in satellite observations. The three-peaked longitudinal pattern, often quoted as typical for the December season, is significantly weaker. During the months around May–June a prominent wave-1 feature appears. To first order it represents a stationary planetary wave SPW1 which causes an intensification of the EEJ at western longitudes beyond 60° W and a weakening over Africa/India. In addition, a prominent ter-diurnal non-migrating tide TW4 causes the EEJ to peak later, at hours past 14:00 local time in the western sector. A particularly interesting non-migrating tide is the semi-diurnal SW3. It causes largest EEJ amplitudes from October through December. This tidal component shows a strong dependence on solar flux level with increasing amplitudes towards solar maximum. We are not aware of any previous studies mentioning this behaviour of SW3. The main focus of this study is to present the observed EEJ spectrum and its relation to tidal driving. For several of the identified spectral components we cannot offer convincing explanations for the generation mechanisms.
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Manson, A. H., C. E. Meek, X. Xu, T. Aso, J. R. Drummond, C. M. Hall, W. K. Hocking, M. Tsutsumi i W. E. Ward. "Characteristics of Arctic tides at CANDAC-PEARL (80° N, 86° W) and Svalbard (78° N, 16° E) for 2006–2009: radar observations and comparisons with the model CMAM-DAS". Annales Geophysicae 29, nr 10 (31.10.2011): 1939–54. http://dx.doi.org/10.5194/angeo-29-1939-2011.

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Abstract. Operation of a Meteor Radar (MWR) at Eureka, Ellesmere Island (80° N, 86° W) began in February 2006: this is the location of the Polar Environmental and Atmospheric Research Laboratory (PEARL), operated by the "Canadian Network for the Detection of Atmospheric Change" (CANDAC). The first 36 months of tidal wind data (82–97 km) are here combined with contemporaneous tides from the Meteor Radar (MWR) at Adventdalen, Svalbard (78° N, 16° E), to provide the first significant evidence for interannual variability (IAV) of the High Arctic's diurnal and semidiurnal migrating (MT) and non-migrating tides (NMT). The three-year monthly means for both diurnal (DT) and semi-diurnal (SDT) winds demonstrate significantly different amplitudes and phases at Eureka and Svalbard. Typically the summer-maximizing DT is much larger (~24 m s−1 at 97 km) at Eureka, while the Svalbard tide (5–24 m s−1 at 97 km)) is almost linear (north-south) rather than circular. Interannual variations are smallest in the summer and autumn months. The High Arctic SDT has maxima centred on August/September, followed in size by the winter features; and is much larger at Svalbard (24 m s−1 at 97 km, versus 14–18 m s−1 in central Canada). Depending on the location, the IAV are largest in spring/winter (Eureka) and summer/autumn (Svalbard). Fitting of wave-numbers for the migrating and non-migrating tides (MT, NMT) determines dominant tides for each month and height. Existence of NMT is consistent with nonlinear interactions between migrating tides and (quasi) stationary planetary wave (SPW) S=1 (SPW1). For the diurnal oscillation, NMT s=0 for the east-west (EW) wind component dominates (largest tide) in the late autumn and winter (November–February); and s=+2 is frequently seen in the north-south (NS) wind component for the same months. The semi-diurnal oscillation's NMT s=+1 dominates from March to June/July. There are patches of s=+3 and +1, in the late fall-winter. These wave numbers are also consistent with SPW1-MT interactions. Comparisons for 2007 of the observed DT and SDT at 78–80° N, with those within the Canadian Middle Atmosphere Model Data Assimilation System CMAM-DAS, are a major feature of this paper. The diurnal tides for the two locations have important similarities as observed and modeled, with seasonal maxima in the mesosphere from April to October, and similar phases with long/evanescent wavelengths. However, differences are also significant: observed Eureka amplitudes are generally larger than the model; and at Svalbard the modeled tide is classically circular, rather than anomalous. For the semi-diurnal tide, the amplitudes and phases differ markedly between Eureka and Svalbard for both MWR-radar data and CMAM-DAS data. The seasonal variations from observed and modeled archives also differ at each location. Tidal NMT-amplitudes and wave-numbers for the model differ substantially from observations.
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Wahl, T., J. Jensen i T. Frank. "On analysing sea level rise in the German Bight since 1844". Natural Hazards and Earth System Sciences 10, nr 2 (1.02.2010): 171–79. http://dx.doi.org/10.5194/nhess-10-171-2010.

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Abstract. In this paper, a methodology to analyse observed sea level rise (SLR) in the German Bight, the shallow south-eastern part of the North Sea, is presented. The paper focuses on the description of the methods used to generate and analyse mean sea level (MSL) time series. Parametric fitting approaches as well as non-parametric data adaptive filters, such as Singular System Analysis (SSA) are applied. For padding non-stationary sea level time series, an advanced approach named Monte-Carlo autoregressive padding (MCAP) is introduced. This approach allows the specification of uncertainties of the behaviour of smoothed time series near the boundaries. As an example, the paper includes the results from analysing the sea level records of the Cuxhaven tide gauge and the Heligoland tide gauge, both located in the south-eastern North Sea. For comparison, the results from analysing a worldwide sea level reconstruction are also presented. The results for the North Sea point to a weak negative acceleration of SLR since 1844 with a strong positive acceleration at the end of the 19th century, to a period of almost no SLR around the 1970s with subsequent positive acceleration and to high recent rates.
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Onohara, Amelia Naomi, Inez Staciarini Batista i Paulo Prado Batista. "Wavenumber-4 structures observed in the low-latitude ionosphere during low and high solar activity periods using FORMOSAT/COSMIC observations". Annales Geophysicae 36, nr 2 (21.03.2018): 459–71. http://dx.doi.org/10.5194/angeo-36-459-2018.

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Abstract. The main purpose of this study is to investigate the four-peak structure observed in the low-latitude equatorial ionosphere by the FORMOSAT/COSMIC satellites. Longitudinal distributions of NmF2 (the density of the F layer peak) and hmF2 (ionospheric F2-layer peak height) averages, obtained around September equinox periods from 2007 to 2015, were submitted to a bi-spectral Fourier analysis in order to obtain the amplitudes and phases of the main waves. The four-peak structure in the equatorial and low-latitude ionosphere was present in both low and high solar activity periods. This kind of structure possibly has tropospheric origins related to the tidal waves propagating from below that modulate the E-region dynamo, mainly the eastward non-migrating diurnal tide with wavenumber 3 (DE3, E for eastward). This wave when combined with the migrating diurnal tide (DW1, W for westward) presents a wavenumber-4 (wave-4) structure under a synoptic view. Electron densities observed during 2008 and 2013 September equinoxes revealed that the wave-4 structures became more prominent around or above the F-region altitude peak (∼ 300–350 km). The four-peak structure remains up to higher ionosphere altitudes (∼ 800 km). Spectral analysis showed DE3 and SPW4 (stationary planetary wave with wavenumber 4) signatures at these altitudes. We found that a combination of DE3 and SPW4 with migrating tides is able to reproduce the wave-4 pattern in most of the ionospheric parameters. For the first time a study using wave variations in ionospheric observations for different altitude intervals and solar cycle was done. The conclusion is that the wave-4 structure observed at high altitudes in ionosphere is related to effects of the E-region dynamo combined with transport effects in the F region.
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Rodríguez, Adrián, Sylvio Ferraz-Mello i Hauke Hussmann. "Tidal friction in close-in planets". Proceedings of the International Astronomical Union 3, S249 (październik 2007): 179–86. http://dx.doi.org/10.1017/s174392130801658x.

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AbstractWe use Darwin's theory (Darwin, 1880) to derive the main results on the orbital and rotational evolution of a close-in companion (exoplanet or planetary satellite) due to tidal friction. The given results do not depend on any assumption linking the tidal lags to the frequencies of the corresponding tide harmonics (except that equal frequency harmonics are assumed to span equal lags). Emphasis is given to the study of the synchronization of the planetary rotation in the two possible final states for a non-zero eccentricity : (1) the super-synchronous stationary rotation resulting from the vanishing of the average tidal torque; (2) the capture into a 1:1 spin-orbit resonance (true synchronization), which is only possible if an additional torque exists acting in opposition to the tidal torque. Results are given under the assumption that this additional torque is produced by a non-tidal permanent equatorial asymmetry of the planet. The indirect tidal effects and some non-tidal effects due to that asymmetry are considered. For sake of comparison with other works, the results obtained when tidal lags are assumed proportional to the corresponding tidal wave frequencies are also given.
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Mendonça, João M. "Angular momentum and heat transport on tidally locked hot Jupiter planets". Monthly Notices of the Royal Astronomical Society 491, nr 1 (4.11.2019): 1456–70. http://dx.doi.org/10.1093/mnras/stz3050.

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ABSTRACT The atmospheric circulation in the upper atmosphere of hot Jupiter planets is strongly influenced by the incoming stellar radiation. In this work, we explore the results from a 3D atmospheric model and revisit the main processes driving the circulation in hot Jupiter planets. We use the angular momentum transport as a diagnostic and carry out a Fourier analysis to identify the atmospheric waves involved. We find that the coupling between the angular momentum transported horizontally by the semidiurnal tide and the mean circulation is the mechanism responsible for producing the strong jet at low latitudes. Our simulations indicate the possible formation of atmospheric indirect cells at low latitudes. The formation of these cells is induced by the presence of the semidiurnal tide that is driven by the stellar irradiation. The tropical circulation has an important impact transporting heat and momentum from the upper towards the lower atmosphere. One of the consequences of this heat and momentum transport is a global increase of the temperature. We show that the initial conditions do not affect the output of the reference simulation. However, when the period of rotation of the planet was increased (Prot > 5 Earth days), vertical transport by stationary waves became stronger, transient waves became non-negligible, and Coriolis influence less dominant, which allowed a steady state with a strong retrograde jet to be stable. We found that at least two statically steady state solutions exist for the same planet parameters.
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Xu, X., A. H. Manson, C. E. Meek, T. Chshyolkova, J. R. Drummond, C. M. Hall, Ch Jacobi i in. "Relationship between variability of the semidiurnal tide in the Northern Hemisphere mesosphere and quasi-stationary planetary waves throughout the global middle atmosphere". Annales Geophysicae 27, nr 11 (11.11.2009): 4239–56. http://dx.doi.org/10.5194/angeo-27-4239-2009.

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Abstract. To investigate possible couplings between planetary waves and the semidiurnal tide (SDT), this work examines the statistical correlations between the SDT amplitudes observed in the Northern Hemisphere (NH) mesosphere and stationary planetary wave (SPW) with wavenumber S=1 (SPW1) amplitudes throughout the global stratosphere and mesosphere. The latter are derived from the Aura-MLS temperature measurements. During NH summer-fall (July–October), the mesospheric SDT amplitudes observed at Svalbard (78° N) and Eureka (80° N) usually do not show persistent correlations with the SPW1 amplitudes in the opposite hemisphere. Although the SDT amplitudes observed at lower latitudes (~50–70° N), especially at Saskatoon (52° N), are often shown to be highly and positively correlated with the SPW1 amplitudes in high southern latitudes, these correlations cannot be sufficiently explained as evidence for a direct physical link between the Southern Hemisphere (SH) winter-early spring SPW and NH summer-early fall mesospheric SDT. This is because the migrating tide's contribution is usually dominant in the mid-high latitude (~50–70° N) NH mesosphere during the local late summer-early fall (July–September). The numerical correlation is dominated by similar low-frequency variability or trends between the amplitudes of the NH SDT and SH SPW1 during the respective equinoctial transitions. In contradistinction, during NH winter (November–February), the mesospheric SDT amplitudes at northern mid-high latitudes (~50–80° N) are observed to be significantly and positively correlated with the SPW1 amplitudes in the same hemisphere in most cases. Because both the SPW and migrating SDT are large in the NH during the local winter, a non-linear interaction between SPW and migrating SDT probably occurs, thus providing a global non-migrating SDT. This is consistent with observations of SDT in Antarctica that are large in summer than in winter. It is suggested that climatological hemispheric asymmetry, e.g. the SH and NH winter characteristics are substantially different, lead to differences in the inter-hemispheric SPW-tide physical links.
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Jones, Roger N., i James H. Ricketts. "Reconciling the signal and noise of atmospheric warming on decadal timescales". Earth System Dynamics 8, nr 1 (16.03.2017): 177–210. http://dx.doi.org/10.5194/esd-8-177-2017.

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Abstract. Interactions between externally forced and internally generated climate variations on decadal timescales is a major determinant of changing climate risk. Severe testing is applied to observed global and regional surface and satellite temperatures and modelled surface temperatures to determine whether these interactions are independent, as in the traditional signal-to-noise model, or whether they interact, resulting in step-like warming. The multistep bivariate test is used to detect step changes in temperature data. The resulting data are then subject to six tests designed to distinguish between the two statistical hypotheses, hstep and htrend. Test 1: since the mid-20th century, most observed warming has taken place in four events: in 1979/80 and 1997/98 at the global scale, 1988/89 in the Northern Hemisphere and 1968–70 in the Southern Hemisphere. Temperature is more step-like than trend-like on a regional basis. Satellite temperature is more step-like than surface temperature. Warming from internal trends is less than 40 % of the total for four of five global records tested (1880–2013/14). Test 2: correlations between step-change frequency in observations and models (1880–2005) are 0.32 (CMIP3) and 0.34 (CMIP5). For the period 1950–2005, grouping selected events (1963/64, 1968–70, 1976/77, 1979/80, 1987/88 and 1996–98), the correlation increases to 0.78. Test 3: steps and shifts (steps minus internal trends) from a 107-member climate model ensemble (2006–2095) explain total warming and equilibrium climate sensitivity better than internal trends. Test 4: in three regions tested, the change between stationary and non-stationary temperatures is step-like and attributable to external forcing. Test 5: step-like changes are also present in tide gauge observations, rainfall, ocean heat content and related variables. Test 6: across a selection of tests, a simple stepladder model better represents the internal structures of warming than a simple trend, providing strong evidence that the climate system is exhibiting complex system behaviour on decadal timescales. This model indicates that in situ warming of the atmosphere does not occur; instead, a store-and-release mechanism from the ocean to the atmosphere is proposed. It is physically plausible and theoretically sound. The presence of step-like – rather than gradual – warming is important information for characterising and managing future climate risk.
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Ray, R. D., i E. D. Zaron. "Non-stationary internal tides observed with satellite altimetry". Geophysical Research Letters 38, nr 17 (wrzesień 2011): n/a. http://dx.doi.org/10.1029/2011gl048617.

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Sturm, Matthew, Dorothy K. Hall, Carl S. Benson i William O. Field. "Non-climatic control of glacier-terminus fluctuations in the Wrangell and Chugach Mountains, Alaska, U.S.A." Journal of Glaciology 37, nr 127 (1991): 348–56. http://dx.doi.org/10.1017/s0022143000005785.

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AbstractFluctuations of glacier termini were studied in two regions in Alaska. In the Wrangell Mountains, 15 glaciers on Mount Wrangell, an active volcano, have been monitored over the past 30 years by surveying, photogrammetry and satellite. Results, which are consistent between different methods of measurement, indicate that the termini of most glaciers were stationary or retreating slightly. However, the termini of the 30 km long Ahtna Glacier and the smaller Center and South MacKeith Glaciers began to advance in the early 1960s and have advanced steadily between 5 and 18 m a−1since then. These three glaciers flow from the active North Crater, where increased volcanic heating since 1964 has melted over 7 x 107m3of ice. We suspect that volcanic meltwater has changed the basal conditions for the three glaciers, resulting in their advance.The terminus fluctuations of six tide-water and near-tide-water glaciers in College Fjord, Prince William Sound, have been monitored since 1931 by surveying, photogrammetry and, most recently, by satellite imagery. Harvard Glacier, a 40 km long tide-water glacier, has been advancing at an average rate of nearly 20 ma−1since 1931, while the adjacent Yale Glacier has retreated at approximately 50 ma−1during the same period though, for short periods, both of these rates have been much higher. The striking contrast between the terminus behavior of Yale and Harvard Glaciers, which parallel each other in the same fiord, and are derived from the same snowfield, supports the hypothesis that their terminus behavior is largely the result of dynamic controls rather than changes in climate.
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Sturm, Matthew, Dorothy K. Hall, Carl S. Benson i William O. Field. "Non-climatic control of glacier-terminus fluctuations in the Wrangell and Chugach Mountains, Alaska, U.S.A." Journal of Glaciology 37, nr 127 (1991): 348–56. http://dx.doi.org/10.3189/s0022143000005785.

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AbstractFluctuations of glacier termini were studied in two regions in Alaska. In the Wrangell Mountains, 15 glaciers on Mount Wrangell, an active volcano, have been monitored over the past 30 years by surveying, photogrammetry and satellite. Results, which are consistent between different methods of measurement, indicate that the termini of most glaciers were stationary or retreating slightly. However, the termini of the 30 km long Ahtna Glacier and the smaller Center and South MacKeith Glaciers began to advance in the early 1960s and have advanced steadily between 5 and 18 m a−1 since then. These three glaciers flow from the active North Crater, where increased volcanic heating since 1964 has melted over 7 x 107 m3 of ice. We suspect that volcanic meltwater has changed the basal conditions for the three glaciers, resulting in their advance.The terminus fluctuations of six tide-water and near-tide-water glaciers in College Fjord, Prince William Sound, have been monitored since 1931 by surveying, photogrammetry and, most recently, by satellite imagery. Harvard Glacier, a 40 km long tide-water glacier, has been advancing at an average rate of nearly 20 ma−1 since 1931, while the adjacent Yale Glacier has retreated at approximately 50 ma−1 during the same period though, for short periods, both of these rates have been much higher. The striking contrast between the terminus behavior of Yale and Harvard Glaciers, which parallel each other in the same fiord, and are derived from the same snowfield, supports the hypothesis that their terminus behavior is largely the result of dynamic controls rather than changes in climate.
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18

Chabalko, Matthew, Jordan Besnoff, Moshe Laifenfeld i David S. Ricketts. "Resonantly Coupled Wireless Power Transfer for Non-Stationary Loads With Application in Automotive Environments". IEEE Transactions on Industrial Electronics 64, nr 1 (styczeń 2017): 91–103. http://dx.doi.org/10.1109/tie.2016.2609379.

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Berezowski, Marek, i Marcin Lawnik. "Homotopic Parametric Continuation Method for Determining Stationary States of Chemical Reactors with Dispersion". Symmetry 13, nr 12 (4.12.2021): 2324. http://dx.doi.org/10.3390/sym13122324.

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Physical processes occurring in devices with distributed variables and a turbulent tide with a dispersion of mass and heat are often modeled using systems of nonlinear equations. Solving such a system is sometimes impossible in an analytical manner. The iterative methods, such as Newton’s method, are not always sufficiently effective in such cases. In this article, a combination of the homotopy method and the parametric continuation method was proposed to solve the system of nonlinear differential equations. These methods are symmetrical, i.e., the calculations can be made by increasing or decreasing the value of the parameters. Thanks to this approach, the determination of all roots of the system does not require any iterative method. Moreover, when the solutions of the system are close to each other, the proposed method easily determines all of them. As an example of the method use a mathematical model of a non-adiabatic catalytic pseudohomogeneous tubular chemical reactor with longitudinal dispersion was chosen.
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20

Panayotova, Galina S., i Dimitar A. Dimitrov. "Modeling from Time Series of Complex Brain Signals". International Journal of Signal Processing Systems 9, nr 1 (marzec 2021): 1–6. http://dx.doi.org/10.18178/ijsps.9.1.1-6.

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Signals obtained from most of real-world systems, especially from living organisms, are irregular, often chaotic, non-stationary, and noise-corrupted. Since modern measuring devices usually realize digital processing of information, recordings of the signals take the form of a discrete sequence of samples (a time series). In the paper given a brief overview of the possibilities of such experimental data processing based on reconstruction and usage of a predictive empirical model of a time series. Brain signals can be recorded by brainwave controlled applications, such as EMotiv Epoc +14. The paper investigates the models of the observed brain signals using time series, analyzes their applicability and develops new statistical models for their study.
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Chen, H. J., C. C. Chen, C. Y. Tseng i J. H. Wang. "Effect of tidal triggering on seismicity in Taiwan revealed by the empirical mode decomposition method". Natural Hazards and Earth System Sciences 12, nr 7 (12.07.2012): 2193–202. http://dx.doi.org/10.5194/nhess-12-2193-2012.

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Abstract. The effect of tidal triggering on earthquake occurrence has been controversial for many years. This study considered earthquakes that occurred near Taiwan between 1973 and 2008. Because earthquake data are nonlinear and non-stationary, we applied the empirical mode decomposition (EMD) method to analyze the temporal variations in the number of daily earthquakes to investigate the effect of tidal triggering. We compared the results obtained from the non-declustered catalog with those from two kinds of declustered catalogs and discuss the aftershock effect on the EMD-based analysis. We also investigated stacking the data based on in-phase phenomena of theoretical Earth tides with statistical significance tests. Our results show that the effects of tidal triggering, particularly the lunar tidal effect, can be extracted from the raw seismicity data using the approach proposed here. Our results suggest that the lunar tidal force is likely a factor in the triggering of earthquakes.
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Muriithi, Grace, i Sunetra Chowdhury. "Optimal Energy Management of a Grid-Tied Solar PV-Battery Microgrid: A Reinforcement Learning Approach". Energies 14, nr 9 (8.05.2021): 2700. http://dx.doi.org/10.3390/en14092700.

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In the near future, microgrids will become more prevalent as they play a critical role in integrating distributed renewable energy resources into the main grid. Nevertheless, renewable energy sources, such as solar and wind energy can be extremely volatile as they are weather dependent. These resources coupled with demand can lead to random variations on both the generation and load sides, thus complicating optimal energy management. In this article, a reinforcement learning approach has been proposed to deal with this non-stationary scenario, in which the energy management system (EMS) is modelled as a Markov decision process (MDP). A novel modification of the control problem has been presented that improves the use of energy stored in the battery such that the dynamic demand is not subjected to future high grid tariffs. A comprehensive reward function has also been developed which decreases infeasible action explorations thus improving the performance of the data-driven technique. A Q-learning algorithm is then proposed to minimize the operational cost of the microgrid under unknown future information. To assess the performance of the proposed EMS, a comparison study between a trading EMS model and a non-trading case is performed using a typical commercial load curve and PV profile over a 24-h horizon. Numerical simulation results indicate that the agent learns to select an optimized energy schedule that minimizes energy cost (cost of power purchased from the utility and battery wear cost) in all the studied cases. However, comparing the non-trading EMS to the trading EMS model operational costs, the latter one was found to decrease costs by 4.033% in summer season and 2.199% in winter season.
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Rudenko, Oleg, Oleksandr Bezsonov i Oleksandr Romanyk. "Neural network time series prediction based on multilayer perceptron". Development Management 17, nr 1 (7.05.2019): 23–34. http://dx.doi.org/10.21511/dm.5(1).2019.03.

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Until recently, the statistical approach was the main technique in solving the prediction problem. In the framework of static models, the tasks of forecasting, the identification of hidden periodicity in data, analysis of dependencies, risk assessment in decision making, and others are solved. The general disadvantage of statistical models is the complexity of choosing the type of the model and selecting its parameters. Computing intelligence methods, among which artificial neural networks should be considered at first, can serve as alternative to statistical methods. The ability of the neural network to comprehensively process information follows from their ability to generalize and isolate hidden dependencies between input and output data. Significant advantage of neural networks is that they are capable of learning and generalizing the accumulated knowledge. The article proposes a method of neural networks training in solving the problem of prediction of the time series. Most of the predictive tasks of the time series are characterized by high levels of nonlinearity and non-stationary, noisiness, irregular trends, jumps, abnormal emissions. In these conditions, rigid statistical assumptions about the properties of the time series often limit the possibilities of classical forecasting methods. The alternative methods to statistical methods can be the methods of computational intelligence, which include artificial neural networks. The simulation results confirmed that the proposed method of training the neural network can significantly improve the prediction accuracy of the time series.
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Moolman, Elna, i Suzanne McCoskey. "On the long-run interdependence of stock markets: A tale of correlations, autoregressions and decompositions". South African Journal of Economic and Management Sciences 5, nr 3 (30.09.2002): 526–48. http://dx.doi.org/10.4102/sajems.v5i3.2740.

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It seems as if national stock markets within certain groups of countries, for example within Europe and Asia, are interdependent. But to what extent are stock markets between these groups interdependent? Is it still possible to diversify among these groups, or have globalization tied world markets together to such an extent that diversification is no longer feasible? In this study we use time series techniques to analyze the interdependence among four of the most important groups of economies, namely Europe, Latin America, Asia and the US. This will show whether it is still possible to diversify between the stock markets of these groups of economies, since stock markets within these groups seem to be interdependent to such an extent that diversification within these groups is no longer possible. On a methodological level, we compare the results of the OLS-VAR with an FM-VAR model, which is a more robust estimation procedure in the presence of non-stationary or cointegrated series.
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25

Claus, Ana, Alexandra Berkova, Osama Awadallah i Bilal El-Zahab. "Seawater Battery: Strategies to Enable High Performance". ECS Meeting Abstracts MA2022-02, nr 64 (9.10.2022): 2330. http://dx.doi.org/10.1149/ma2022-02642330mtgabs.

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Renewable energy sources such as solar, wind, and tide energy have been implemented to decrease air pollution due to common fossil fuel-generated electricity [1]. However, those systems are intermittent; creating the need for an energy storage system (ESS) that stores over-generated energy for later use and effectively matches the power fluctuation generated because of the sporadic demand throughout the day [2]. A possible solution to this problem is to couple renewable sources with rechargeable batteries. The most widespread electrochemical battery in the market is Lithium-ion, owing to its high energy density and lifetime and capability to resist frequent changes in charging-discharging rates [3]. Nevertheless, the current battery industry already requires 50% of the world's available lithium [4]. Foremost, lithium-ion battery is composed of critical metals such as cobalt, nickel, and manganese. The anticipated growing demand for these metals will lead to their scarcity [5]. Therefore, this study aims to develop strategy to enable a sodium-ion battery based on soluble seawater sodium and address the electrochemical and engineering problems. Seawater batteries have an open cathode compartment that can utilizes Na+ infinite source in the ocean as the active material [6]. There are three main components in this open structure seawater battery design. First is the non-aqueous liquid electrolyte facilitating the sodium ions transfer and deposition on the anode compartment [7-8]. Subsequently, the solid-state electrolyte (SSE) enables the flow of sodium ions from the sweater cathode to the anode which is typically copper current collector [9]. Lastly, a current collector that provides reaction sites for cathode reactions that could be made of carbon-based materials, such as carbon paper, carbon felt, or carbon cloth [10]. The Solid-state electrolyte is the component that requires the most attention. It must have high ionic conductivity to increase sodium-ions transfers and maintain good mechanical and physical properties as it represents the interface between cathode and anode, preventing the water from penetrating the anode compartment and short-circuiting the cell. To increase its ionic conductivity, it is necessary to reduce its thickness as much as possible. Through the palletization and sintering process, a ceramic SSE was fabricated with a thickness of ~ 250 µm and ionic conductivity of 0.62 mS/cm. Subsequently, symmetric cells (Na||SSE||Cu) were assembled to further test the pellet's performance. Cells that were tested under continuous charge/discharge cycling for 360 cycles showed stable charge capacity and high Coulombic efficiency (> 95%). Performance of full cells using seawater at the cathode was also demonstrated. Addressing various issues such as water permeation through the SSE, electrode corrosion, Na deactivation in the anode, and catalytic activity of the carbon cathodes are also investigated. Figure 1. Charge/discharge profile of a symmetric Na||SSE||Cu cell at a current density of 0.10 mA/cm2. References: [1] Hussain, Akhtar, et al. “Emerging Renewable and Sustainable Energy Technologies: State of the Art.” Renewable and Sustainable Energy Reviews, Pergamon, 8 Jan. 2017, [2] CAISO, 2016. Fast Facts: What the Duck Curve Tells Us about Managing a Green Grid. https://www.caiso.com/Documents/FlexibleResourcesHelpRenewables_FastFacts.pdf [3] Schmuch, R., Wagner, R., Hörpel, G. et al. Performance and cost of materials for lithium-based rechargeable automotive batteries. Nat Energy 3, 267–278, 2018. [4] Vaalma, C., Buchholz, D., Weil, M. et al. A cost and resource analysis of sodium-ion batteries. Nat Rev Mater 3, 18013 (2018). [5] Prior, Timothy, et al. “Sustainable Governance of Scarce Metals: The Case of Lithium.” Science of The Total Environment, Elsevier, 12 June 2013, [6] Hwang, S. M., Park, J.-S., Kim, Y., Go, W., Han, J., Kim, Y., Kim, Y. “Rechargeable Seawater Batteries—From Concept to Applications” Adv. Mater. 2019, 31, 1804936. [7] S. Lee, I. Y. Cho, D. Kim, N. K. Park, J. Park, Y. Kim, S. J. Kang, Y. Kim, S. Y. Hong, “Redox-Active Functional Electrolyte for High-Performance Seawater Batteries” ChemSusChem 2020, 13, 2220. [8] Kim, Y., Kim, G.-T., Jeong, S., Dou, X., Geng, C., Kim, Y., & Passerini, S. (2018, April 26). Large-scale stationary energy storage: Seawater batteries with high rate and reversible performance. Energy Storage Materials. [9] Wang, Yumei, et al. “Development of Solid-State Electrolytes for Sodium-Ion Battery–A Short Review.” Nano Materials Science, Elsevier, 21 Mar. 2019, [10] Park, Jehee, et al. “Hybridization of Cathode Electrochemistry in a Rechargeable Seawater Battery: Toward Performance Enhancement.” Journal of Power Sources, Elsevier, 18 Dec. 2019. Figure 1
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Cavers, M. S., i K. Vasudevan. "Brief Communication: Earthquake sequencing: analysis of time series constructed from the Markov chain model". Nonlinear Processes in Geophysics 22, nr 5 (9.10.2015): 589–99. http://dx.doi.org/10.5194/npg-22-589-2015.

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Abstract. Directed graph representation of a Markov chain model to study global earthquake sequencing leads to a time series of state-to-state transition probabilities that includes the spatio-temporally linked recurrent events in the record-breaking sense. A state refers to a configuration comprised of zones with either the occurrence or non-occurrence of an earthquake in each zone in a pre-determined time interval. Since the time series is derived from non-linear and non-stationary earthquake sequencing, we use known analysis methods to glean new information. We apply decomposition procedures such as ensemble empirical mode decomposition (EEMD) to study the state-to-state fluctuations in each of the intrinsic mode functions. We subject the intrinsic mode functions, derived from the time series using the EEMD, to a detailed analysis to draw information content of the time series. Also, we investigate the influence of random noise on the data-driven state-to-state transition probabilities. We consider a second aspect of earthquake sequencing that is closely tied to its time-correlative behaviour. Here, we extend the Fano factor and Allan factor analysis to the time series of state-to-state transition frequencies of a Markov chain. Our results support not only the usefulness of the intrinsic mode functions in understanding the time series but also the presence of power-law behaviour exemplified by the Fano factor and the Allan factor.
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27

Cavers, M. S., i K. Vasudevan. "Insight into earthquake sequencing: analysis and interpretation of time-series constructed from the directed graph of the Markov chain model". Nonlinear Processes in Geophysics Discussions 2, nr 1 (24.02.2015): 399–424. http://dx.doi.org/10.5194/npgd-2-399-2015.

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Abstract. Directed graph representation of a Markov chain model to study global earthquake sequencing leads to a time-series of state-to-state transition probabilities that includes the spatio-temporally linked recurrent events in the record-breaking sense. A state refers to a configuration comprised of zones with either the occurrence or non-occurrence of an earthquake in each zone in a pre-determined time interval. Since the time-series is derived from non-linear and non-stationary earthquake sequencing, we use known analysis methods to glean new information. We apply decomposition procedures such as ensemble empirical mode decomposition (EEMD) to study the state-to-state fluctuations in each of the intrinsic mode functions. We subject the intrinsic mode functions, the orthogonal basis set derived from the time-series using the EEMD, to a detailed analysis to draw information-content of the time-series. Also, we investigate the influence of random-noise on the data-driven state-to-state transition probabilities. We consider a second aspect of earthquake sequencing that is closely tied to its time-correlative behavior. Here, we extend the Fano factor and Allan factor analysis to the time-series of state-to state transition frequencies of a Markov chain. Our results support not only the usefulness the intrinsic mode functions in understanding the time-series but also the presence of power-law behaviour exemplified by the Fano factor and the Allan factor.
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28

Hązła, Jan, Elchanan Mossel, Nathan Ross i Guangqu Zheng. "The probability of intransitivity in dice and close elections". Probability Theory and Related Fields 178, nr 3-4 (19.08.2020): 951–1009. http://dx.doi.org/10.1007/s00440-020-00994-7.

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Abstract We study the phenomenon of intransitivity in models of dice and voting. First, we follow a recent thread of research for n-sided dice with pairwise ordering induced by the probability, relative to 1/2, that a throw from one die is higher than the other. We build on a recent result of Polymath showing that three dice with i.i.d. faces drawn from the uniform distribution on $$\{1,\ldots ,n\}$$ { 1 , … , n } and conditioned on the average of faces equal to $$(n+1)/2$$ ( n + 1 ) / 2 are intransitive with asymptotic probability 1/4. We show that if dice faces are drawn from a non-uniform continuous mean zero distribution conditioned on the average of faces equal to 0, then three dice are transitive with high probability. We also extend our results to stationary Gaussian dice, whose faces, for example, can be the fractional Brownian increments with Hurst index $$H\in (0,1)$$ H ∈ ( 0 , 1 ) . Second, we pose an analogous model in the context of Condorcet voting. We consider n voters who rank k alternatives independently and uniformly at random. The winner between each two alternatives is decided by a majority vote based on the preferences. We show that in this model, if all pairwise elections are close to tied, then the asymptotic probability of obtaining any tournament on the k alternatives is equal to $$2^{-k(k-1)/2}$$ 2 - k ( k - 1 ) / 2 , which markedly differs from known results in the model without conditioning. We also explore the Condorcet voting model where methods other than simple majority are used for pairwise elections. We investigate some natural definitions of “close to tied” for general functions and exhibit an example where the distribution over tournaments is not uniform under those definitions.
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29

Garcia, Rolando R., Ruth Lieberman, James M. Russell i Martin G. Mlynczak. "Large-Scale Waves in the Mesosphere and Lower Thermosphere Observed by SABER". Journal of the Atmospheric Sciences 62, nr 12 (1.12.2005): 4384–99. http://dx.doi.org/10.1175/jas3612.1.

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Abstract Observations made by the Sounding of the Atmosphere using Broadband Emission Radiometry (SABER) instrument on board NASA’s Thermosphere–Ionosphere–Mesosphere Energetics and Dynamics (TIMED) satellite have been processed using Salby’s fast Fourier synoptic mapping (FFSM) algorithm. The mapped data provide a first synoptic look at the mean structure and traveling waves of the mesosphere and lower thermosphere (MLT) since the launch of the TIMED satellite in December 2001. The results show the presence of various wave modes in the MLT, which reach largest amplitude above the mesopause and include Kelvin and Rossby–gravity waves, eastward-propagating diurnal oscillations (“non-sun-synchronous tides”), and a set of quasi-normal modes associated with the so-called 2-day wave. The latter exhibits marked seasonal variability, attaining large amplitudes during the solstices and all but disappearing at the equinoxes. SABER data also show a strong quasi-stationary Rossby wave signal throughout the middle atmosphere of the winter hemisphere; the signal extends into the Tropics and even into the summer hemisphere in the MLT, suggesting ducting by westerly background zonal winds. At certain times of the year, the 5-day Rossby normal mode and the 4-day wave associated with instability of the polar night jet are also prominent in SABER data.
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30

Forbes, J. M., M. Kilpatrick, D. Fritts, A. H. Manson i R. A. Vincent. "Zonal mean and tidal dynamics from space: an empirical examination of aliasing and sampling". Annales Geophysicae 15, nr 9 (30.09.1997): 1158–64. http://dx.doi.org/10.1007/s00585-997-1158-z.

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Abstract. Interpretations of space-based measurements of atmospheric parameters in the mesosphere and thermosphere are complicated by large local-time variations at these altitudes. For this reason, satellite orbits are often preferred which precess through all local times one or more times per season. However, the local-time structure of the atmosphere is inherently non-stationary, which can lead to sampling and aliasing difficulties when attempting to deconvolve the measurements into zonal mean and tidal components. In the present study, hourly radar measurements of mesopause-region winds are used to form a mock data base which can be used to gain insight into implications of the aforementioned problems; the use of actual measurements introduces a realistic element of geophysical temporal variability. Assuming zonal symmetry (i.e., migrating tides superimposed on a zonal mean circulation), the radar measurements are sampled from the satellite perspective for orbital inclinations of 57° and 70°, and compared to the ground or true perspective. These comparisons provide realistic estimates of the errors to be expected when attempting to derive mean and tidal components from space-based measurements. For both diurnal and semidiurnal components, and the quoted satellite inclinations, acceptable errors (3–4m/srms) are obtained for data covering 24h local time (i.e., ascending plus descending nodes); the corresponding errors for single-node data (12h local-time coverage) are of order 8–11m/s, and therefore may not represent reliable estimates of the actual tidal components. There exist certain caveats in connection with the latter conclusion which are discussed.
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31

Anderson, Dylan, A. Spicer Bak, Katherine L. Brodie, Nicholas Cohn, Rob A. Holman i John Stanley. "Quantifying Optically Derived Two-Dimensional Wave-Averaged Currents in the Surf Zone". Remote Sensing 13, nr 4 (13.02.2021): 690. http://dx.doi.org/10.3390/rs13040690.

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Complex two-dimensional nearshore current patterns are generated by feedbacks between sub-aqueous morphology and momentum imparted on the water column by breaking waves, winds, and tides. These non-stationary features, such as rip currents and circulation cells, respond to changing environmental conditions and underlying morphology. However, using fixed instruments to observe nearshore currents is limiting due to the high costs and logistics necessary to achieve adequate spatial sampling resolution. A new technique for processing surf-zone imagery, WAMFlow, quantifies fluid velocities to reveal complex, multi-scale (10 s–1000 s meters) nearshore surface circulation patterns. We apply the concept of a wave-averaged movie (WAM) to measure surf-zone circulation patterns on spatial scales of kilometers in the alongshore and 100 s of meters in the cross-shore. The approach uses a rolling average of 2 Hz optical imagery, removing the dominant optical clutter of incident waves, to leave the residual foam or water turbidity features carried by the flow. These residual features are tracked as quasi-passive tracers in space and time using optical flow, which solves for u and v as a function of image intensity gradients in x, y, and t. Surf zone drifters were deployed over multiple days with varying nearshore circulations to validate the optically derived flow patterns. Root mean square error are reduced to 0.1 m per second after filtering based on image attributes. The optically derived patterns captured longshore currents, rip currents, and gyres within the surf zone. Quantifying nearshore circulation patterns using low-cost image platforms and open-source computer vision algorithms presents the potential to further our understanding of fundamental surf zone dynamics.
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32

Dobrynin, Aleksey Sergeevich, Mikhail Yur'evich Gudkov i Roman Sergeevich Koynov. "A precedent approach to incident management in automated process control systems". Программные системы и вычислительные методы, nr 2 (luty 2020): 45–52. http://dx.doi.org/10.7256/2454-0714.2020.2.31040.

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The continuous development of automated control systems for industrial facilities leads to the emergence of more advanced and complex control algorithms. A natural consequence of the development of control systems (CS) is the use of more complex technical means: sensors, controllers, SCADA and MES systems. Ultimately, the saturation of systems with additional software and hardware leads to a decrease in manageability in general, since software needs to be updated, equipment often fails, needs replacement, etc. Thus, approaches aimed at creating separate, autonomously functioning subsystems are becoming a thing of the past. An integrated, multi-level joint management of the entire infrastructure of the process control system is needed, from the technological facility to the technical infrastructure, which is closely tied to the facility. The article discusses the issues of constructing top-level control subsystems for the process control system, when it is necessary to control directly the software and hardware as part of the process control system. As research methods, simulation and computer modeling was used, which made it possible to evaluate the effectiveness of the proposed approaches and management methods. Also, the research results were verified through the pilot implementation of an automated incident management system based on the proposed approaches in the process of managing a complex technologically object. The novelty of the research lies in the proposed approach to incident management in automated process control systems, which makes it possible to improve the quality of management, reduce management costs, and predict (in some cases) the occurrence of new incidents and take measures to prevent them. Studies have shown the feasibility of using the proposed approach to control complex non-stationary automation systems.
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33

Marsh, Bruce D. "Solidification fronts and magmatic evolution". Mineralogical Magazine 60, nr 398 (luty 1996): 5–40. http://dx.doi.org/10.1180/minmag.1996.060.398.03.

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AbstractFrom G. F. Becker's and L. V. Pirsson's early enunciations linking the dynamics of magma chambers to the rock records of sills and plutons to this day, two features stand at the centre of nearly every magmatic process: solidification fronts and phenocrysts. The structure and behaviour of the envisioned solidification front, however, has been mostly that akin to non-silicate, non-multiply-saturated systems, which has led to confusion in appreciating its role in magmatic evolution. The common habit of intruding magmas to carry significant amounts of phenocrysts, which can lead to efficient fractionation, layering, and interstitial melt flow within extensive mush piles, when coupled with solidification fronts, allows a broad understanding of the processes leading to the rock records of sills and lava lakes. These same processes are fundamental to understanding all magmas.The spatial manifestation of the liquidus and solidus is the Solidification Front (SF); all magmas, stationary or in transit, are encased by SFs. In the ideal case of an initially crystal-free, cooling magma, crystallinity increases from nucleation on the leading liquidus edge to a holocrystalline rock at the trailing solidus. The package of SF isotherms advances inward, thickening with time and, depending on location — roof, floor, or walls — and the initial crystallinity of the magma, is instrumental in controlling magmatic evolution. Bimodal volcanism as well as much of the structure of the oceanic crust may arise from the behaviour of SFs.In mafic magmas, somewhere near a crystallinity (N) of 55% (vol), depending on the phase assemblage, the SF changes from a viscous fluid (suspension (0<N<25) and mush (25<N<55%)) to an elastic crystalline network (rigid crust (55<N<100%)) of some strength containing interstitial residual melt. With thickening of the roofward SF of some mafic magmas, the weight of the leading, viscous portion repeatedly tears the crust near N ∼ 55–60%, efficiently segregating the local residual melt into zones of interdigitating silicic lenses. This is SF instability (SFI), a process of possible importance in continental crust initiation and evolution, in producing silicic segregations in oceanic crust, and in recording the inability of the viscous part of the upper SF ever to detach wholly in typical (<∼ 1 km) sheet-like magmas. These granophyric and pegmatitic segregations, individually reaching 1–2 m in thickness and 30–50 m in length, form thick (∼ 50–75 m) zones that can be misconstrued as sandwich horizons where the last liquids might have accumulated. In effectively splitting the magma chemically and spatially, SFI is, in essence, a form of chaos (i.e. silicic chaos).Differentiation of initially crystal-free, stationary magmas is limited to processes occurring within SFs, which operate in competition with the rate of inward advancement of solidification. Local processes operating on characteristic time scales longer than the time for the SF to advance a distance equal to its own thickness are suppressed. Enormous increases in viscosity outward within the viscous, leading portion of the SF efficiently partition the distribution of melt accessible to eruption. Eruptible melts lie essentially inward of the SF and are thus severely restricted in silica enrichment. The silica-enriched SFI melts are thus generally inaccessible to collection and eviction unless the host SF is reprocessed or “burned back” through, respectively, later regional magmatism or massive, late-stage re-injection. And because of large viscosity contrasts between SFI melts and host basalts, once freed, SFI melts are literally impossible to homogenize back into the system and may collect and compact against the roof to form large silicic masses. Unusually voluminous, bulbous masses of silicic granophyre present along, and sometimes warping, the roofs of large diabase sills may reflect collections of remobilized blobs of SFI melts. These bulbous masses may be later added to the continental crust through solid state creep.In sheets made of phenocryst-rich, singly saturated magma, most phenocrysts are able through settling or floating to avoid capture by the advancing SFs. Significant differentiation is possible through extensive settling of initial phenocrysts and upward leakage of interstitial residual melt from the associated cumulate pile, which over-thickens the lower SF, greatly tipping the competitive edge against suppression of melt leakage by advancing solidification. Dense interstitial melts may similarly drain from roofward cumulates of light phenocrysts. The variation in crystal size and modal abundance in these cumulate piles are intimate records of prior crystallization, transport, and filling.Magmas in transit erode SFs and thoroughly charge the magma with crystals, facilitating fractionation and differentiation, especially if the body occasionally comes to rest. The key to protracted differentiation through fractional crystallization is not crystallization in stationary, closed chambers, but the repeated transport and chambering of magma or the periodic resupply to chambers of phenocryst-rich magma. This is punctuated differentiation, which may be the general case. Close corollaries are that thick, closed sheets of initially crystal-free, multiply-saturated magma undergo precious little overall differentiation, and that deciphering the sequence and crystallinity, including in transit phenocryst entrainment, growth, and sorting, of the filling events is central to unravelling intrusive history.Variations in temperature, whether on phase diagrams or in actual magmas, are intrinsically linked to commensurate variations in space and time in magmatic systems. The spectrum of all physical and chemical processes associated with magma is accordingly strongly partitioned in space and time.The idea of a magma chamber as a vat of low crystallinity melt crystallizing everywhere within and differentiating through crystal settling is unrealistic. A magma chamber formed of any number of crystal-laden inputs, encased by inward-propagating, dynamic solidification fronts, and where significant differentiation is tied to the dynamics of late-stage, interstitial melt within extensive mush piles is more in accord with the rock record.
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Xiao, Ziyu, Zhaoqing Yang, Taiping Wang, Ning Sun, Mark Wigmosta i David Judi. "Characterizing the Non-linear Interactions Between Tide, Storm Surge, and River Flow in the Delaware Bay Estuary, United States". Frontiers in Marine Science 8 (30.07.2021). http://dx.doi.org/10.3389/fmars.2021.715557.

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Low-lying coastal areas in the mid-Atlantic region are prone to compound flooding resulting from the co-occurrence of river floods and coastal storm surges. To better understand the contribution of non-linear tide-surge-river interactions to compound flooding, the unstructured-grid Finite Volume Community Ocean Model was applied to simulate coastal storm surge and flooding in the Delaware Bay Estuary in the United States. The model was validated with tide gauge data in the estuary for selected hurricane events. Non-linear interactions between tide-surge-river were investigated using a non-stationary tidal analysis method, which decomposes the interactions’ components at the frequency domain. Model results indicated that tide-river interactions damped semidiurnal tides, while the tide-surge interactions mainly influenced diurnal tides. Tide-river interactions suppressed the water level upstream while tide-surge interaction increased the water level downstream, which resulted in a transition zone of damping and enhancing effects where the tide-surge-river interaction was prominent. Evident compound flooding was observed as a result of non-linear tide-surge-river interactions. Furthermore, sensitivity analysis was carried out to evaluate the effect of river flooding on the non-linear interactions. The transition zone of damping and enhancing effects shifted downstream as the river flow rate increased.
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Wong, Tony E., Hannah Sheets, Travis Torline i Mingxuan Zhang. "Evidence for Increasing Frequency of Extreme Coastal Sea Levels". Frontiers in Climate 4 (3.03.2022). http://dx.doi.org/10.3389/fclim.2022.796479.

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Projections of extreme sea levels (ESLs) are critical for managing coastal risks, but are made complicated by deep uncertainties. One key uncertainty is the choice of model structure used to estimate coastal hazards. Differences in model structural choices contribute to uncertainty in estimated coastal hazard, so it is important to characterize how model structural choice affects estimates of ESL. Here, we present a collection of 36 ESL data sets, from tide gauge stations along the United States East and Gulf Coasts. The data are processed using both annual block maxima and peaks-over-thresholds approaches for modeling distributions of extremes. We use these data sets to fit a suite of potentially non-stationary generalized extreme value distributions and generalized Pareto distributions by covarying the ESL statistics with multiple climate variables. For all of the sites and statistical model structures for tide surge considered here, we find that accounting for changes in the frequency of coastal extreme sea levels provides a better fit to data than using a stationary extreme value model. Further, when maximizing the a posteriori probability of the model parameters, given the available tide gauge data, generalized extreme value distribution structures with non-stationary scale parameter are preferred over non-stationary location parameter. These results have implications for how deep uncertainties in coastal flood hazards are characterized, particularly in how studies incorporate potential non-stationarity in storm surge statistics.
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Sepúlveda, Ignacio, Philip L. ‐F Liu, Mircea Grigoriu, Jennifer S. Haase i Patricio Winckler. "Non‐stationary Probabilistic Tsunami Hazard Assessments Compounding Tides and Sea Level Rise". Earth's Future, 4.11.2022. http://dx.doi.org/10.1029/2022ef002965.

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Jain, S., S. Singh i J. Singh. "An Adaptive Time-Efficient Technique for Harmonics Estimation of Non-stationary Signals". IEEE Transactions on Industrial Electronics, 2012, 1. http://dx.doi.org/10.1109/tie.2012.2200218.

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38

"A meshless method for the numerical solution of the seventh-order Korteweg-de Vries equation". Bulletin of V.N. Karazin Kharkiv National University, series «Mathematical modeling. Information technology. Automated control systems», nr 45 (2020). http://dx.doi.org/10.26565/2304-6201-2020-45-02.

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This article describes a meshless method for the numerical solution of the seventh-order nonlinear one-dimensional non-stationary Korteweg-de Vries equation. The meshless scheme is based on the use of the collocation method and radial basis functions. In this approach, the solution is approximated by radial basis functions, and the collocation method is used to compute the unknown coefficients. The meshless method uses the following radial basis functions: Gaussian, inverse quadratic, multiquadric, inverse multiquadric and Wu’s compactly supported radial basis function. Time discretization of the nonlinear one-dimensional non-stationary Korteweg-de Vries equation is obtained using the θ-scheme. This meshless method has an advantage over traditional numerical methods, such as the finite difference method and the finite element method, because it doesn’t require constructing an interpolation grid inside the domain of the boundary-value problem. In this meshless scheme the domain of a boundary-value problem is a set of uniformly or arbitrarily distributed nodes to which the basic functions are “tied”. The paper presents the results of the numerical solutions of two benchmark problems which were obtained using this meshless approach. The graphs of the analytical and numerical solutions for benchmark problems were obtained. Accuracy of the method is assessed in terms of the average relative error, the average absolute error, and the maximum error. Numerical experiments demonstrate high accuracy and robustness of the method for solving the seventh-order nonlinear one-dimensional non-stationary Korteweg-de Vries equation.
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39

Daravath, Ramesh, i Srinivasa Rao Sandepudi. "Control of multifunctional inverter to improve power quality in grid-tied solar photo voltaic systems". International Journal of Emerging Electric Power Systems, 7.10.2022. http://dx.doi.org/10.1515/ijeeps-2022-0117.

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Abstract In this paper, a control algorithm is proposed for a multifunctional inverter to improve power quality in a grid-tied solar photo voltaic (SPV) systems connected to non-linear and unbalanced loads. During light loads and low solar irradiance, the surplus capacity of inverter rating is optimally utilized to compensate some of the power quality (PQ) indices based on conservative power theory (CPT) along with active power injected into the utility grid and also connected loads. The stationary reference frame based proportional resonant (PR) current controller is designed to facilitate accurate tracking of inverter currents, fast time response under dynamic conditions when unbalanced and non-linear loads are connected at the point of common connection (PCC). The proposed control scheme enables selective compensation of power quality indices such as harmonics, unbalance and reactive powers depending on type of load and grid requirements there by, reducing the burden on the utility grid. Experimental results for various dynamic conditions are presented to validate the proposed controller performance and highlight the merits.
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40

Codrescu, Mihail, Stefan Codrescu i Mariangel Fedrizzi. "storm time neutral density assimilation in the thermosphere ionosphere with tida". Journal of Space Weather and Space Climate, 10.04.2022. http://dx.doi.org/10.1051/swsc/2022011.

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To improve Thermosphere-Ionosphere modeling during disturbed conditions, data assimilation schemes that can account for the large and fast moving gradients moving through the modeled domain are necessary. We argue that this requires a physics based background model with a non-stationary covariance. An added benefit of using physics based models would be improved forecasting capability over largely persistence based forecasts of empirical models. As a reference implementation, we have developed an ensemble Kalman Filter (enKF) software called Thermosphere Ionosphere Data Assimilation (TIDA) using the physics based Coupled Thermosphere Ionosphere Plasmasphere electrodynamics (CTIPe) model as the background. In this paper we present detailed results from experiments during the 2003 Halloween Storm, 27-31 October 2003, under very disturbed ($\mathrm{K}_p$ = 9) conditions while assimilating GRACE-A and B, and CHAMP neutral density measurements. TIDA simulates this disturbed period without using the L1 solar wind measurements, which were contaminated by solar energetic protons, by estimating the model drivers from the density measurements. We also briefly present statistical results for two additional storms: September 27 - October 2, 2002 and July 26 - 30, 2004 to show that the improvement in assimilated neutral density specification is not an artifact of the corrupted forcing observations during the 2003 Halloween Storm. By showing statistical results from assimilating one satellite at a time, we show that TIDA produces a coherent global specification for neutral density throughout the storm -- a critical capability in calculating satellite drag and debris collision avoidance for space traffic management.
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41

Ferrarin, Christian, Piero Lionello, Mirko Orlić, Fabio Raicich i Gianfausto Salvadori. "Venice as a paradigm of coastal flooding under multiple compound drivers". Scientific Reports 12, nr 1 (6.04.2022). http://dx.doi.org/10.1038/s41598-022-09652-5.

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AbstractFull comprehension of the dynamics of hazardous sea levels is indispensable for assessing and managing coastal flood risk, especially under a changing climate. The 12 November 2019 devastating flood in the historical city of Venice (Italy) stimulated new investigations of the coastal flooding problem from different perspectives and timescales. Here Venice is used as a paradigm for coastal flood risk, due to the complexity of its flood dynamics facing those of many other locations worldwide. Spectral decomposition was applied to the long-term 1872–2019 sea-level time series in order to investigate the relative importance of different drivers of coastal flooding and their temporal changes. Moreover, a multivariate analysis via copulas provided statistical models indispensable for correctly understanding and reproducing the interactions between the variables at play. While storm surges are the main drivers of the most extreme events, tides and long-term forcings associated with planetary atmospheric waves and seasonal to inter-annual oscillations are predominant in determining recurrent nuisance flooding. The non-stationary analysis revealed a positive trend in the intensity of the non-tidal contribution to extreme sea levels in the last three decades, which, along with relative sea-level rise, contributed to an increase in the frequency of floods in Venice.
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Yuningsih, Ai Yuningsih. "ASSESSMENT OF POTENTIAL MARINE CURRENT ENERGY IN THE STRAITS OF THE LESSER SUNDA ISLANDS". BULLETIN OF THE MARINE GEOLOGY 36, nr 1 (18.09.2021). http://dx.doi.org/10.32693/bomg.36.1.2021.703.

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The Lesser Sunda Islands extend from Bali to Timor and consist of two geologically distinct parts formed by a subduction system of oceanic crust along the Java-Timor Trench. The northern part which includes Bali, Lombok, Sumbawa, Flores, Wetar, Pantar and Alor, is volcanic in origin; whilst the southern part is non-volcanic, encompassing the islands of Sumba, Timor and Rote. The straits along the Lesser Sunda Islands are formed as a result of very complex geological processes and tectonics in this area. These straits are the most important cross-sections in the southern part of the Indonesian Throughflow (ITF), functioning as outlets for the mass flows of seawater from the Pacific Ocean to the Indian Ocean through the Flores and the Savu Seas. In these straits, relatively high current speeds are occurred, not only caused by the ITF but also due to its geometry, the influence of tidal flow, and monsoonal currents.Site study and ocean current measurement were conducted by using an echosounder, a pair of Acoustic Doppler Current Profilers (ADCP), and other supporting equipment. In general, the average of most ocean current speeds is less than 1.5 m/s with a duration flow of 8 -12 hours a day, and the maximum speed reaches up to 3 m/s. The tidal types in almost all the straits are mixed semidiurnal tides, in which two high waters and two low waters occur twice a day, with the high and low tides differ in height.The Lesser Sunda Straits were selected as the potential sites for ocean current power plant because their current speeds are relatively high and their characteristics are more predictable compared with other straits from other regions. Based on the results of bathymetry survey and current characteristics from the deployed ADCP at a fixed (stationary) location on the seabed, the best location for the current power turbines is at the depth of 15-30 m where the seabed gently sloping.
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Sharma, Sarah. "The Great American Staycation and the Risk of Stillness". M/C Journal 12, nr 1 (4.03.2009). http://dx.doi.org/10.5204/mcj.122.

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The habitual passenger cannot grasp the folly of traffic based overwhelmingly on transport. His inherited perceptions of space and time and of personal pace have been industrially deformed. He has lost the power to conceive of himself outside the passenger role (Illich 25).The most basic definition of Stillness refers to a state of being in the absence of both motion and disturbance. Some might say it is anti-American. Stillness denies the democratic freedom of mobility in a social system where, as Ivan Illich writes in Energy and Equity, people “believe that political power grows out of the capacity of a transportation system, and in its absence is the result of access to the television screen” (26). In America, it isn’t too far of a stretch to say that most are quite used to being interpolated as some sort of subject of the screen, be it the windshield or the flat screen. Whether in transport or tele-vision, life is full of traffic and flickering images. In the best of times there is a choice between being citizen-audience member or citizen-passenger. A full day might include both.But during the summer of 2008 things seemed to change. The citizen-passenger was left beached, not in some sandy paradise but in their backyard. In this state of SIMBY (stuck in my backyard), the citizen-passenger experienced the energy crisis first hand. Middle class suburbanites were forced to come to terms with a new disturbance due to rising fuel prices: unattainable motion. Domestic travel had been exchanged for domestication. The citizen-passenger was rendered what Paul Virilio might call, “a voyager without a voyage, this passenger without a passage, the ultimate stranger, and renegade to himself” (Crepuscular 131). The threat to capitalism posed by this unattainable motion was quickly thwarted by America’s 'big box' stores, hotel chains, and news networks. What might have become a culturally transformative politics of attainable stillness was hijacked instead by The Great American Staycation. The Staycation is a neologism that refers to the activity of making a vacation out of staying at home. But the Staycation is more than a passing phrase; it is a complex cultural phenomenon that targeted middle class homes during the summer of 2008. A major constraint to a happy Staycation was the uncomfortable fact that the middle class home was not really a desirable destination as it stood. The family home would have to undergo a series of changes, one being the initiation of a set of time management strategies; and the second, the adoption of new objects for consumption. Good Morning America first featured the Staycation as a helpful parenting strategy for what was expected to be a long and arduous summer. GMA defined the parameters of the Staycation with four golden rules in May of 2008:Schedule start and end dates. Otherwise, it runs the risk of feeling just like another string of nights in front of the tube. Take Staycation photos or videos, just as you would if you went away from home on your vacation. Declare a 'choratorium.' That means no chores! Don't make the bed, vacuum, clean out the closets, pull weeds, or nothing, Pack that time with activities. (Leamy)Not only did GMA continue with the theme throughout the summer but the other networks also weighed in. Expert knowledge was doled out and therapeutic interventions were made to make people feel better about staying at home. Online travel companies such as expedia.com and tripadvisor.com, estimated that 60% of regular vacation takers would be staying home. With the rise and fall of gas prices, came the rise of fall of the Staycation.The emergence of the Staycation occurred precisely at a time when American citizens were confronted with the reality that their mobility and localities, including their relationship to domestic space, were structurally bound to larger geopolitical forces. The Staycation was an invention deployed by various interlocutors most threatened by the political possibilities inherent in stillness. The family home was catapulted into the circuits of production, consumption, and exchange. Big TV and Big Box stores furthered individual’s unease towards having to stay at home by discursively constructing the gas prices as an impediment to a happy domestic life and an affront to the American born right to be mobile. What was reinforced was that Americans ideally should be moving, but could not. Yet, at the same time it was rather un-American not to travel. The Staycation was couched in a powerful rhetoric of one’s moral duty to the nation while playing off of middle class anxieties and senses of privilege regarding the right to be mobile and the freedom to consume. The Staycation satiates all of these tensions by insisting that the home can become a somewhere else. Between spring and autumn of 2008, lifestyle experts, representatives from major retailers, and avid Staycationers filled morning slots on ABC, NBC, FOX, CBS, and CNN with Staycation tips. CNN highlighted the Staycation as a “1st Issue” in their Weekend Report on 12 June 2008 (Alban). This lead story centred on a father in South Windsor, Connecticut “who took the money he would normally spend on vacations and created a permanent Staycation residence.” The palatial home was fitted with a basketball court, swimming pool, hot tub, gardening area, and volleyball court. In the same week (and for those without several acres) CBS’s Early Show featured the editor of behindthebuy.com, a company that specialises in informing the “time starved consumer” about new commodities. The lifestyle consultant previewed the newest and most necessary items “so you could get away without leaving home.” Key essentials included a “family-sized” tent replete with an air conditioning unit, a projector TV screen amenable to the outdoors, a high-end snow-cone maker, a small beer keg, a mini-golf kit, and a fast-setting swimming pool that attaches to any garden hose. The segment also extolled the virtues of the Staycation even when gas prices might not be so high, “you have this stuff forever, if you go on vacation all you have are the pictures.” Here, the value of the consumer products outweighs the value of erstwhile experiences that would have to be left to mere recollection.Throughout the summer ABC News’ homepage included links to specific products and profiled hotels, such as Hiltons and Holiday Inns, where families could at least get a few miles away from home (Leamy). USA Today, in an article about retailers and the Staycation, reported that Wal-Mart would be “rolling back prices on everything from mosquito repellent to portable DVD players to baked beans and barbecue sauce”. Target and Kohl’s were celebrated for offering discounts on patio furniture, grills, scented candles, air fresheners and other products to make middle class homes ‘staycationable’. A Lexis Nexis count revealed over 200 news stories in various North American sources, including the New York Times, Financial Times, Investors Guide, the Christian Science Monitor, and various local Consumer Credit Counselling Guides. Staying home was not necessarily an inexpensive option. USA Today reported brand new grills, grilling meats, patio furniture and other accoutrements were still going to cost six percent more than the previous year (24 May 2008). While it was suggested that the Staycation was a cost-saving option, it is clear Staycations were for the well-enough off and would likely cost more or as much as an actual vacation. To put this in context with US vacation policies and practices, a recent report by the Center for Economic and Policy Research called No-Vacation Nation found that the US is the only advanced economy in the world that does not guarantee its workers paid vacation (Ray and Schmidt 3). Subsequently, without government standards 25% of Americans have neither paid vacation nor paid holidays. The Staycation was not for the working poor who were having difficulty even getting to work in the first place, nor were they for the unemployed, recently job-less, or the foreclosed. No, the Staycationers were middle class suburbanites who had backyards and enough acreage for swimming pools and tents. These were people who were going to be ‘stuck’ at home for the first time and a new grill could make that palatable. The Staycation would be exciting enough to include in their vacation history repertoire.All of the families profiled on the major networks were white Americans and in most cases nuclear families. For them, unattainable motion is an affront to the privilege of their white middle class mobility which is usually easy and unencumbered, in comparison to raced mobilities. Doreen Massey’s theory of “power geometry” which argues that different people have differential and inequitable relationships to mobility is relevant here. The lack of racial representation in Staycation stories reinforces the reality that has already been well documented in the works of bell hooks in Black Looks: Race and Representation, Lynn Spigel in Welcome to the Dreamhouse: Popular Media and Postwar Suburbs, and Jeremy Packer in Mobility without Mayhem: Safety, Cars and Citizenship. All of these critical works suggest that taking easily to the great open road is not the experience of all Americans. Freedom of mobility is in fact a great American fiction.The proprietors for the Great American Staycation were finding all sorts of dark corners in the American psyche to extol the virtues of staying at home. The Staycation capitalised on latent xenophobic tendencies of the insular family. Encountering cultural difference along the way could become taxing and an impediment to the fully deserved relaxation that is the stuff of dream vacations. CNN.com ran an article soon after their Weekend Report mentioned above quoting a life coach who argued Staycations were more fitting for many Americans because the “strangeness of different cultures or languages, figuring out foreign currencies or worrying about lost luggage can take a toll” (12 June 2008). The Staycation sustains a culture of insularity, consumption, distraction, and fear, but in doing so serves the national economic interests quite well. Stay at home, shop, grill, watch TV and movies, these were the economic directives programmed by mass media and retail giants. As such it was a cultural phenomenon commensurable to the mundane everyday life of the suburbs.The popular version of the Staycation is a highly managed and purified event that reflects the resort style/compound tourism of ‘Club Meds’ and cruise ships. The Staycation as a new form of domestication bears a significant resemblance to the contemporary spatial formations that Marc Augé refers to as non-places – contemporary forms of homogeneous architecture that are scattered across disparate locales. The nuclear family home becomes another point of transfer in the global circulation of capital, information, and goods. The chain hotels and big box stores that are invested in the Staycation are touted as part of the local economy but instead devalue the local by making it harder for independent restaurants, grocers, farmers’ markets and bed and breakfasts to thrive. In this regard the Staycation excludes the local economy and the community. It includes backyards not balconies, hot-dogs not ‘other’ types of food, and Wal-Mart rather than then a local café or deli. Playing on the American democratic ideals of freedom of mobility and activating one’s identity as a consumer left little room to re-think how life in constant motion (moving capital, moving people, moving information, and moving goods) was partially responsible for the energy crisis in the first place. Instead, staying at home became a way for the American citizen to support the floundering economy while waiting for gas prices to go back down. And, one wouldn’t have to look that much further to see that the Staycation slips discursively into a renewed mission for a just cause – the environment. For example, ABC launched at the end of the summer a ruse of a national holiday, “National Stay at Home Week” with the tag line: “With gas prices so high, the economy taking a nosedive and global warming, it's just better to stay in and enjoy great ABC TV.” It comes as no shock that none of the major networks covered this as an environmental issue or an important moment for transformation. In fact, the air conditioning units in backyard tents attest to quite the opposite. Instead, the overwhelming sense was of a nation waiting at home for it all to be over. Soon real life would resume and everyone could get moving again. The economic slowdown and the energy crisis are examples of the breakdown and failure of capitalism. In a sense, a potential opened up in this breakdown for Stillness to become an alternative to life in constant and unrequited motion. That is, for the practice of non-movement and non-circulation to take on new political and cultural forms especially in the sprawling suburbs where the car moves individuals between the trifecta of home, box store, and work. The economic crisis is also a temporary stoppage of the flows. If the individual couldn’t move, global corporate capital would find a way to set the house in motion, to reinsert it back into the machinery that is now almost fully equated with freedom.The reinvention of the home into a campground or drive-in theatre makes the house a moving entity, an inverted mobile home that is both sedentary and in motion. Paul Virilio’s concept of “polar inertia” is important here. He argues, since the advent of transportation individuals live in a state of “resident polar inertia” wherein “people don’t move, even when they’re in a high speed train. They don’t move when they travel in their jet. They are residents in absolute motion” (Crepuscular 71). Lynn Spigel has written extensively about these dynamics, including the home as mobile home, in Make Room for TV and Welcome to the Dreamhouse. She examines how the introduction of the television into domestic space is worked through the tension between the private space of the home and the public world outside. Spigel refers to the dual emergence of portable television and mobile homes. Her work shows how domestic space is constantly imagined and longed for “as a vehicle of transport through which they (families) could imaginatively travel to an illicit place of passion while remaining in the safe space of the family home” (Welcome 60-61). But similarly to what Virilio has inferred Spigel points out that these mobile homes stayed parked and the portable TVs were often stationary as well. The Staycation exists as an addendum to what Spigel captures about the relationship between domestic space and the television set. It provides another example of advertisers’ attempts to play off the suburban tension between domestic space and the world “out there.” The Staycation exacerbates the role of the domestic space as a site of production, distribution, and consumption. The gendered dynamics of the Staycation include redecorating possibilities targeted at women and the backyard beer and grill culture aimed at men. In fact, ‘Mom’ might suffer the most during a Staycation, but that is another topic. The point is the whole family can get involved in a way that sustains the configurations of power but with an element of novelty.The Staycation is both a cultural phenomenon that feeds off the cultural anxieties of the middle class and an economic directive. It has been constructed to maintain movement at a time when the crisis of capital contains seeds for an alternative, for Stillness to become politically and culturally transformative. But life feels dull when the passenger is stuck and the virtues of Stillness are quite difficult to locate in this cultural context. As Illich argues, “the passenger who agrees to live in a world monopolised by transport becomes a harassed, overburdened consumer of distances whose shape and length he can no longer control” (45). When the passenger is the mode of identification, immobility becomes unbearable. In this context a form of “still mobility” such as the Staycation might be satisfying enough. ConclusionThe still citizen is a threatening figure for capital. In Politics of the Very Worst Virilio argues at the heart of capitalism is a state of permanent mobility, a condition to which polar inertia attests. The Staycation fits completely within this context of this form of mobile immobility. The flow needs to keep flowing. When people are stationary, still, and calm the market suffers. It has often been argued that the advertising industries construct dissatisfaction while also marginally eliminating it through the promises of various products, yet ultimately leaving the individual in a constant state of almost satisfied but never really. The fact that the Staycation is a mode of waiting attests to this complacent dissatisfaction.The subjective and experiential dimensions of living in a capitalist society are experienced through one’s relationship to time and staying on the right path. The economic slowdown and the energy crisis are also crises in pace, energy, and time. The mobility and tempo, the pace and path that capital relies on, has become unhinged and vulnerable to a resistant re-shaping. The Staycation re-sets the tempo of suburbia to meet the new needs of an economic slowdown and financial crisis. Following the directive to staycate is not necessarily a new form of false consciousness, but an intensified technological and economic mode of subjection that depends on already established cultural anxieties. But what makes the Staycation unique and worthy of consideration is that capitalists and other disciplinary institutions of power, in this case big media, construct new and innovative ways to control people’s time and regulate their movement in space. The Staycation is a particular re-territorialisation of the temporal and spatial dimensions of home, work, and leisure. In sum, Staycation and the staging of National Stay at Home Week reveals a systemic mobilising and control of a population’s pace and path. As Bernard Stiegler writes in Technics and Time: “Deceleration remains a figure of speed, just as immobility is a figure of movement” (133). These processes are inexorably tied to one another. Thinking back to the opening quote from Illich, we could ask how we might stop imagining ourselves as passengers – ushered along, falling in line, or complacently floating past. To be still in the flows could be a form of ultimate resistance. In fact, Stillness has the possibility of becoming an autonomous practice of refusal. It is after all this threatening potentiality that created the frenzied invention of the Staycation in the first place. To end where I began, Illich states that “the habitual passenger must adopt a new set of beliefs and expectations if he is to feel secure in the strange world” (25-26). The horizon of political possibility is uniformly limited for the passenger. Whether people actually did follow these directives during the summer of 2008 is hard to determine. The point is that the energy crisis and economic slowdown offered a potential to vacate capital’s premises, both its pace and path. But corporate capital is doing its best to make sure that people wait, staycate, and see it through. The Staycation is not just about staying at home for vacation. It is about staying within reach, being accounted for, at a time when departing global corporate capital seems to be the best option. ReferencesAlban, Debra. “Staycations: Alternative to Pricey, Stressful Travel.” CNN News 12 June 2008. 6 Mar. 2009 ‹http://edition.cnn.com/2008/LIVING/worklife/06/12/balance.staycation/index.html›.Augé, Marc. Non-Places: Introduction to an Anthropology of Supermodernity. Verso, London, 1995.hooks, bell. Black Looks: Race and Representation. Boston: South End Press, 1992.Illich, Ivan. Energy and Equity. New York: Perennial Library, 1974.Leamy, Elisabeth. “Tips for Planning a Great 'Staycation'.” ABC News 23 May 2008. 6 Mar. 2009 ‹http://abcnews.go.com/GMA/Parenting/story?id=4919211›.Massey, Doreen. Space, Place, and Gender. Minneapolis: Minnesota U P, 1994.Packer, Jeremy. Mobility without Mayhem: Safety, Cars, and Citizenship. Durham, NC: Duke U P, 2008.Ray, Rebecca and John Schmitt. No-Vacation Nation. Washington, D.C.: Center for Economic and Policy Research, May 2007.Spigel, Lynn. Make Room for TV: Television and the Family Ideal in Postwar America. Chicago: Chicago U P, 1992.———. Welcome to the Dreamhouse: Popular Media and Postwar Suburbs. Durham, NC: Duke U P, 2001.Stiegler, Bernard. Technics and Time 2: Disorientation. Trans. Stephen Barker. California: Stanford University Press, 2009.USA Today. “Retailers Promote 'Staycation' Sales.” 24 May 2008. 6 Mar. 2009 ‹http://www.usatoday.com/money/industries/retail/2008-05-24-staycations_N.htm›.Virilio, Paul. Speed and Politics. Trans. Mark Polizzotti. New York: Semiotext(e), 1986.———. In James der Derian, ed. The Virilio Reader. Malden, Mass.: Blackwell, 1998.———. Politics of the Very Worst. New York: Semiotext(e), 1999.———. Crepuscular Dawn. New York: Semiotext(e), 2002.
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Stevens, Carolyn Shannon. "Cute But Relaxed: Ten Years of Rilakkuma in Precarious Japan". M/C Journal 17, nr 2 (3.03.2014). http://dx.doi.org/10.5204/mcj.783.

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Introduction Japan has long been cited as a major source of cute (kawaii) culture as it has spread around the world, as encapsulated in Christine R. Yano’s phrase ‘Pink Globalization’. This essay charts recent developments in Japanese society through the cute character Rilakkuma, a character produced by San-X (a competitor to Sanrio, which produces the famed Hello Kitty). His name means ‘relaxed bear’, and Rilakkuma and friends are featured in comics, games and other products, called kyarakutā shōhin (also kyarakutā guzzu, which both mean ‘character goods’). Rilakkuma is pictured relaxing, sleeping, eating sweets, and listening to music; he is not only lazy, but he is also unproductive in socio-economic terms. Yet, he is never censured for this lifestyle. He provides visual pleasure to those who buy these goods, but more importantly, Rilakkuma’s story charitably portrays a lifestyle that is fully consumptive with very little, if any, productivity. Rilakkuma’s reified consumption is certainly in line with many earlier analyses of shōjo (young girl) culture in Japan, where consumerism is considered ‘detached from the productive economy of heterosexual reproduction’ (Treat, 281) and valued as an end in itself. Young girl culture in Japan has been both critiqued and celebrated in in opposition to the economic productivity as well as the emotional emptiness and weakening social prestige of the salaried man (Roberson and Suzuki, 9-10). In recent years, ideal masculinity has been further critiqued with the rise of the sōshokukei danshi (‘grass-eating men’) image: today’s Japanese male youth appear to have no appetite for the ‘meat’ associated with heteronormative, competitively capitalistic male roles (Steger 2013). That is not to say all gender roles have vanished; instead, social and economic precarity has created a space for young people to subvert them. Whether by design or by accident, Rilakkuma has come to represent a Japanese consumer maintaining some standard of emotional equilibrium in the face of the instability that followed the Tōhoku earthquake, tsunami and nuclear disaster in early 2011. A Relaxed Bear in a Precarious Japan Certainly much has been written about the ‘lost decade(s)’ in Japan, or the unraveling of the Japanese postwar miracle since the early 1990s in a variety of unsettling ways. The burst of the ‘bubble economy’ in 1991 led to a period of low or no economic growth, uncertain employment conditions and deflation. Because of Japan’s relative wealth and mature economic system, this was seen a gradual process that Mark Driscoll calls a shift from the ‘so-called Japan Inc. of the 1980s’ to ‘“Japan Shrink” of the 2010s and 2020s’ (165). The Japanese economy was further troubled by the Global Financial Crisis of 2008, and then the Tōhoku disasters. These events have contributed to Japan’s state of ambivalence, as viewed by both its citizens and by external observers. Despite its relative wealth, the nation continues to struggle with deflation (and its corresponding stagnation of wages), a deepening chasm between the two-tier employment system of permanent and casual work, and a deepening public mistrust of corporate and governing authorities. Some of this story is not ‘new’; dual employment practices have existed throughout Japan’s postwar history. What has changed, however, is the attitudes of casual workers; it is now thought to be much more difficult, if not impossible, to shift from low paid, insecure casual labour to permanent, secure positions. The overall unemployment rate remains low precisely because the number of temporary and part time workers has increased, as much as one third of all workers in 2012 (The Japan Times). The Japanese government now concedes that ‘the balance of working conditions between regular and non-regular workers have therefore become important issues’ (Ministry of Health, Labour and Welfare); many see this is not only a distinction between ‘haves’ and ‘have-nots’, but also of a generational shift of those who achieved secure positions before the ‘lost decade’, and those who came after. Economic, political, environmental and social insecurity have given rise to a certain level public malaise, not conducive to a robust consumer culture. Enter Rilakkuma: he, like many other cute characters in Japan, entices the consumer to feel good about spending – or perhaps, to feel okay about spending? – in this precarious time of underemployment and uncertainty about the future. ‘Cute’ Characters: Attracting as Well as Attractive Cute (‘kawaii’) culture in Japan is not just aesthetic; it includes ‘a turn to emotion and even sentimentality, in some of the least likely places’ (Yano, 7). Cute kyarakutā are not just sentimentally attractive; they are more precisely attracting images which are used to sell these character goods: toys, household objects, clothing and stationery. Occhi writes that many kyarakutā are the result of an ‘anthropomorphization’ of objects or creatures which ‘guide the user towards specific [consumer] behaviors’ (78). While kyarakutā would be created first to sell a product, in the end, the character’s popularity at times can eclipse the product’s value, and the character thus becomes ‘pure product’, as in the case of Hello Kitty (Yano, 10). Most characters, however, merely function as ‘specific representatives of a product or service rendered mentally “sticky” through narratives, wordplay and other specialized aspects of their design’ (Occhi, 86). Miller refers to this phenomenon as ‘Japan’s zoomorphic urge’, and argues that etiquette guides and public service posters, which frequently use cute and cuddly animals in the place of humans, is done to ‘render […] potentially dangerous or sensitive topics as safe and acceptable’ (69). Cuteness instrumentally turns away from negative aspects of society, whether it is the demonstration of etiquette rules in public, or the portrayal of an underemployed or unemployed person watching TV at home, as in Rilakkuma. Thus we see a revitalization of the cute zeitgeist in Japanese consumerism in products such as the Rilakkuma franchise, produced by San-X, a company that produces and distributes ‘stationary [sic], sundry goods, merchandises [sic], and paper products with original design.’ (San-X Net). Who Is Rilakkuma? According to the company’s ‘fan’ books, written in response to the popularity of Rilakkuma’s character goods (Nakazawa), the background story of Rilakkuma is as follows: one day, a smallish bear found its way unexplained into the apartment of a Japanese OL (office lady) named Kaoru. He spends his time ‘being of no use to Kaoru, and is actually a pest by lying around all day doing nothing… his main concerns are meals and snacks. He seems to hate the summer [heat].’ Other activities include watching television, listening to music, taking long baths, and tossing balls of paper into the rubbish bin (Nakazawa, 4). His comrades are Korilakkuma (loosely translated as ‘Little Rilakkuma’) and Kiiroitori (simply, ‘Yellow Bird’). Korilakkuma is a smaller and paler version of Rilakkuma; like her friend, she appears in Kaoru’s apartment for no reason. She is described as liking to pull pranks (itazuradaisuki) and is comparatively more energetic (genki) than Rilakkuma; her main activities are imitating Rilakkuma and looking for someone with whom to play (6). Lastly, Kiiroitori is a small yellow bird resembling a chick, and seems to be the only character of the three who has any ‘right’ to reside in Kaoru’s apartment. Kiiroitori was a pet bird residing in cage before the appearance of these two bears, but after Rilakkuma and Korilakkuma set themselves up in her small apartment, Kiiroitori was liberated from his cage and flies in the faces of lazy Rilakkuma and mischievous Korilakkuma (7). Kiiroitori likes tidiness, and is frequently cleaning up after the lazy bears, and he can be short tempered about this (ibid). Kiiroitori’s interests include the charming but rather thrifty ‘finding spare change while cleaning up’ and ‘bear climbing’, which is enjoyed primarily for its annoyance to the bears (ibid). Fig. 1: Korilakkuma, Rilakkuma and Kiiroitori, in 10-year anniversary attire (photo by author). This narrative behind these character goods is yet another aspect of their commodification (in other words, their management, distribution and copyright protection). The information presented ­– the minute details of the characters’ existence, illustrated with cute drawings and calligraphy – enriches the consumer process by deepening the consumers’ interaction with the product. How does the story become as attractive as the cute character? One of the striking characteristics of the ‘official’ Rilakkuma discourse is the sense of ‘ikinari yattekita’ (things happening ‘out of the blue’; Nakazawa 22), or ‘naru yō ni narimasu’ (‘whatever will be will be’; 23) reasoning behind the narrative. Buyers want to know how and why these cute characters come into being, but there is no answer. To some extent, this vagueness reflects the reality of authorship: the characters were first conceptualized by a designer at San-X named Kondō Aki, who left the company soon after Rilakkuma’s debut in 2003 (Akibako). But this ‘out of the blue’ quality of the characters strikes a chord in many consumers’ view of their own lives: why are we here? what are we doing, and why do we do it? The existence of these characters and the reasons for their traits and preferences are inexplicable. There is no reason why or how Rilakkuma came to be – instead, readers are told that to just relax, ‘go with the flow’, and ‘what can be done today can always be done tomorrow’. Procrastination would normally be considered meiwaku, or bothersome to others who depend on you. In Productive Japan, this behavior is not valued. In Precarious Japan, however, underemployment and nonproductivity takes the pressure away from individuals to judge this behavior as negative. Procrastination shifts from meiwaku to normality, and to be transformed into kawaii culture, accepted and even celebrated as such. Rilakkuma is not the first Japanese pop cultural character to rub up against the hyper productive, gambaru (fight!) attitude associated with previous generations, with their associated tropes of the juken jikoku (exam preparation hell) for students, or the karōshi (death from overwork) salaried worker. An early example of this would be Chibi Marukochan (‘Little Maruko’), a comic character created in 1986 but whose popularity peaked in the 1990s. Maruko is an endearing but flawed primary school student who is cute and amusing, but also annoying and short tempered (Sakura). Flawed characters were frequently featured in Japanese popular culture, but Maruko was one of the first featured as heroine, not a jester-like sidekick. As an early example of Japanese cute, subversive characters, Maruko was often annoying and lazy, but she at least aspired to traits such as doing well in school and being a good daughter in her extended family. Rilakkuma, perhaps, demonstrates the extension of this cute but subversive hero/ine: when the stakes are lower (or at their lowest), so is the need for stress and anxiety. Taking it easy is the best option. Rilakkuma’s ‘charm point’ (chāmu pointo, which describes one’s personal appeal), is his transgressive cuteness, and this has paid off for San-X over the years in successful sales of his comic books as well as a variety of products (see fig. 2). Fig. 2: An example of some of the goods for sale in early 2014: a fleecy blanket, a 3d puzzle, note pads and stickers, decorative toggles for a school bag or purse, comic and ‘fan’ books, and a toy car (photo by the author). Over the decade between 2003 and 2013, San X has produced 51 volumes of Rilakkuma comics (Tonozuka, 37 – 42) and over 20 different series of stuffed animals (43 – 45); plus cushions, tote bags, tableware, stationery, and variety goods such as toilet paper holders, umbrellas and contact lens cases (46 – 52). While visiting the Rilakkuma themed shop in Tokyo Station in October 2013, a newly featured and popular product was the Rilakkuma ‘onesie’, a unisex and multipurpose outfit for adults. These products’ diversity are created to meet the consumer desires of Rilakkuma’s significant following in Japan; in a small-scale study of Japanese university students, researchers found that Rilakkuma was the number one nominated ‘favorite character’ (Nosu and Tanaka, 535). Furthermore, students claimed that the attractiveness of favorite characters were judged not just on their appearance, but also due to specific characteristics: ‘characters that are always idle, relaxed, stress-free’ and those ‘that have unusual behavior or stray from the right path’ (ibid) were cited as especially attractive/attracting. Just like Rilakkuma, these researchers found that young Japanese people – the demographic perhaps most troubled by an insecure economic future – are attracted to ‘characters that have flaws in some ways and are not merely cute’ (536). Where to, Rilakkuma? Miller, in her discussion of Japanese animal characters in a variety of cute cultural settings writes Non-human animals emerge as useful metaphors for humans, yet […] it is this aesthetic load rather than the lesson or the ideology behind the image that often becomes the center of our attention. […] However, I think it is useful to separate our analysis of zoomorphic images as vehicles for cuteness from their other possible uses and possible utility in many areas of culture (70). Similarly, we need to look beyond cute, and see what Miller terms as ‘the lesson’ behind the ‘aesthetic load’: here, how cuteness disguises social malaise and eases the shift from ‘Japan Inc.’ to ‘Japan Shrink’. When particular goods are ‘tied’ to other products, the message behind the ‘aesthetic load’ are complicated and deepened. Rilakkuma’s recent commercial (in)activity has been characterized by a variety of ‘tai uppu’ (tie ups), or promotional links between the Rilakkuma image and other similarly aligned products. Traditionally, tie ups in Japan have been most successful when formed between products that were associated with similar audiences and similar aesthetic preferences. We have seen tie ups, for example, between Hello Kitty and McDonald’s (targeting youthful fast food customers) since 1999 (Yano, 129). In ‘Japan Shrink’s’ competitive consumer market, tie ups are becoming more strategic, and all the more interesting. One of the troubled markets in Japan, as elsewhere, is the music industry. Shrinking expendable income coupled with a variety of downloading practices means the traditional popular music industry (primarily in the form of CDs) is in decline. In 2009, Rilakkuma began a co-badged campaign with Tower Records Japan – after all, listening to music is one of Rilakkuma’s listed favourite past times. TRJ was then independent from its failed US counterpart, and a major figure in the music retail scene despite disappointing CD sales since the late 1990s (Stevens, 85). To stir up consumer interest, TRJ offered objects, such as small dolls, towels and shopping bags, festooned with Rilakkuma images and phrases such as ‘Rilakkuma loves Tower Records’ and ‘Relaxed Tour 2012’ (Tonozuka, 72 – 73). Rilakkuma, in a familiar pose lying back with his arms crossed behind his head, but surrounded by musical notes and the phrase ‘No Music, No Life’ (72), presents compact image of the consumer zeitgeist of the day: one’s ikigai (reason for living) is clearly contingent on personal enjoyment, despite Japan’s music industry woes. Rilakkuma also enjoys a close relationship with the ubiquitous convenience store Lawson, which has over 11,000 individual stores throughout Japan and hundreds more overseas (Lawson, Corporate Information). Japanese konbini (the Japanese term for convenience stores), unlike their North American or Australian counterparts, enjoy a higher consumer image in terms of the quality and variety of their products, thus symbolize a certain relaxed lifestyle, as per Merry I. White’s description of the ‘no hands housewife’ breezing through the evening meal preparations thanks to ready made dishes purchased at konbini (72). Japanese convenience stores sell a variety of products, but sweets (Rilakkuma’s favourite) take up a large proportion of shelf space in many stores. The most current ‘Rilakkuma x Lawson campaign’ was undertaken between September and November 2013. During this period, customers earned points to receive a free teacup; certainly Rilakkuma’s cuteness motivated consumers to visit the store to get the prize. All was not well with this tie up, however; complaints about cracked teacups resulted in an external investigation. Finding no causal relationship between construction and fault, Lawson still apologized and offered to exchange any of the approximately 1.73 million cups with an alternate prize for any consumers who so wished (Lawson, An Apology). The alternate prize was still cute in its pink colouring and kawaii character pattern, but it was a larger and much sturdier commuter type mug. Here we see that while Rilakkuma is relaxed, he is still aware of corporate Japan’s increasing sense of corporate accountability and public health. One last tie up demonstrates an unusual alliance between the Rilakkuma franchise and other cultural icons. 2013 marked the ten-year anniversary of Rilakkuma and friends, and this was marked by several prominent campaigns. In Kyoto, we saw Rilakkuma and friends adorning o-mamori (religious amulets) at the famed Kinkakuji (Golden Pavilion), a major temple in Kyoto (see fig. 3a). The ‘languid dream’ of the lazy bear is a double-edged symbol, contrasting with the disciplined practice of Buddhism and complying with a Zen-like dream state of the beauty of the grounds. Another ten-year anniversary campaign was the tie up between Rilakkuma and the 50 year anniversary of JR’s Yamanote Line, the ‘city loop’ in Tokyo. Fig. 3a: Kiiroitori sits atop Rilakkuma with Korilakkuma by their side at the Golden Pavillion, Kyoto. The top caption reads: ‘Relaxed bear, Languid at the Golden Pavilion; Languid Dream Travelogue’Fig. 3b: a key chain made to celebrate Rilakkuma’s appointment to the JR Line; still lazy, Rilakkuma lies on his side but wears a conductor’s cap. This tie up was certainly a coup, for the Yamanote Line is a significant part of 13 million Tokyo residents’ lives, as well as a visible fixture in the cultural landscape since the early postwar period. The Yamanote, with its distinctive light green coloring (uguisuiro, which translates literally to ‘nightingale [bird] colour’) has its own aesthetic: as one of the first modern train lines in the capital, it runs through all the major leisure districts and is featured in many popular songs and even has its own drinking game. This nostalgia for the past, coupled with the masculine, super-efficient former national railway’s system is thus juxtaposed with the lazy, feminized teddy bear (Rilakkuma is male, but his domain is feminine), linking a longing for the past with gendered images of production and consumption in the present. In figure 3b, we see Rilakkuma riding the Yamanote on his own terms (lying on his side, propped up by one elbow – a pose we would never see a JR employee take in public). This cheeky cuteness increases the iconic train’s appeal to its everyday consumers, for despite its efficiency, this line is severely overcrowded during peak hours and suffers from user malaise with respect to etiquette and safety issues. Life in contemporary Japan is no longer the bright, shiny ‘bubble’ of the 1980s. Japan is wrestling with internal and external demons: the nuclear crisis, the lagging economy, deteriorating relations with China, and a generation of young people who have never experienced the optimism of their parents’ generation. Dreamlike, Japan’s denizens move through the contours of their daily lives much as they have in the past, for major social structures remain for the most part in tact; instead, it is the vision of the future that has altered. In this environment, we can argue that kawaii aesthetics are all the more important, for if we are uncomfortable thinking about negative or depressing topics such as industries in decline, questionable consumer safety standards, and overcrowded trains, a cute bear can make it much more ‘bear’-able.ReferencesDriscoll, Mark. “Debt and Denunciation in Post-Bubble Japan: On the Two Freeters.” Cultural Critique 65 (2007): 164-187. Kondō Aki - akibako. “Profile [of Designer Aki Kondō].” 6 Feb. 2014 ‹http://www.akibako.jp/profile/›. Lawson. “Kigyō Jōhō: Kaisha Gaiyō [Corporate Information: Company Overview].” Feb. 2013. 10 Feb. 2014 ‹http://www.lawson.co.jp/company/corporate/about.html/›. Lawson. “Owabi to Oshirase: Rōson aki no rilakkuma fea keihin ‘rilakkuma tei magu’ hason no osore [An Apology and Announcement: Lawson’s Autumn Rilakkuma Fair Giveaway ‘Rilakkuma Tea Mug’ Concern for Damage.” 2 Dec. 2013. 10 Feb. 2014 ‹http://www.lawson.co.jp/emergency/detail/detail_84331.html›. Miller, Laura. “Japan’s Zoomorphic Urge.” ASIANetwork Exchange XVII.2 (2010): 69-82. Ministry of Health, Labour and Welfare. “Employment Security.” 10 Feb. 2014 ‹http://www.mhlw.go.jp/english/policy/employ-labour/employment-security/dl/employment_security_bureau.pdf›. Nakazawa Kumiko, ed. Rirakkuma Daradara Fuan Bukku [Relaxed Bear Leisurely Fan Book]. Tokyo: Kabushikigaisha Shufutoseikatsu. 2008. Nosu, Kiyoshi, and Mai Tanaka. “Factors That Contribute to Japanese University Students’ Evaluations of the Attractiveness of Characters.” IEEJ Transactions on Electrical and Electronic Engineering 8.5 (2013): 535–537. Occhi, Debra J. “Consuming Kyara ‘Characters’: Anthropomorphization and Marketing in Contemporary Japan.” Comparative Culture 15 (2010): 78–87. Roberson, James E., and Nobue Suzuki, “Introduction”, in J. Roberson and N. Suzuki, eds., Men and Masculinities in Contemporary Japan: Dislocating the Salaryman Doxa. London: RoutledgeCurzon, 2003. 1-19. Sakura, Momoko. Chibi Marukochan 1 [Little Maruko, vol. 1]. Tokyo: Shūeisha, 1987 [1990]. San-X Net. “Company Info.” 10 Feb. 2014 ‹http://www.san-x.jp/COMPANY_INFO.html›. Steger, Brigitte. “Negotiating Gendered Space on Japanese Commuter Trains.” ejcjs 13.3 (2013). 29 Apr. 2014 ‹http://www.japanesestudies.org.uk/ejcjs/vol13/iss3/steger.html› Stevens, Carolyn S. Japanese Popular Music: Culture, Authenticity and Power. London: Routledge, 2008. The Japan Times. “Nonregulars at Record 35.2% of Workforce.” 22 Feb. 2012. 6 Feb. 2014 ‹http://www.japantimes.co.jp/news/2012/02/22/news/nonregulars-at-record-35-2-of-workforce/#.UvMb-kKSzeM›. Tonozuka Ikuo, ed. Rirakkuma Tsuzuki Daradara Fan Book [Relaxed Bear Leisurely Fan Book, Continued]. Tokyo: Kabushikigaisha Shufutoseikatsu, 2013. Treat, John Whittier. “Yoshimoto Banana’s Kitchen, or The Cultural Logic of Japanese Consumerism.” In L. Skov and B. Moeran, eds., Women, Media and Consumption in Japan, Surrey: Curzon, 1995. 274-298. 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Chavdarov, Anatoliy V. "Special Issue No. – 10, June, 2020 Journal > Special Issue > Special Issue No. – 10, June, 2020 > Page 5 “Quantative Methods in Modern Science” organized by Academic Paper Ltd, Russia MORPHOLOGICAL AND ANATOMICAL FEATURES OF THE GENUS GAGEA SALISB., GROWING IN THE EAST KAZAKHSTAN REGION Authors: Zhamal T. Igissinova,Almash A. Kitapbayeva,Anargul S. Sharipkhanova,Alexander L. Vorobyev,Svetlana F. Kolosova,Zhanat K. Idrisheva, DOI: https://doi.org/10.26782/jmcms.spl.10/2020.06.00041 Abstract: Due to ecological preferences among species of the genus GageaSalisb, many plants are qualified as rare and/or endangered. Therefore, the problem of rational use of natural resources, in particular protection of early spring plant species is very important. However, literary sources analysis only reveals data on the biology of species of this genus. The present research,conducted in the spring of 2017-2019, focuses on anatomical and morphological features of two Altai species: Gagealutea and Gagea minima; these features were studied, clarified and confirmed by drawings and photographs. The anatomical structure of the stem and leaf blade was studied in detail. The obtained research results will prove useful for studies of medicinal raw materials and honey plants. The aforementioned species are similar in morphological features, yet G. minima issmaller in size, and its shoots appear earlier than those of other species Keywords: Flora,gageas,Altai species,vegetative organs., Refference: I. Atlas of areas and resources of medicinal plants of Kazakhstan.Almaty, 2008. II. Baitenov M.S. Flora of Kazakhstan.Almaty: Ġylym, 2001. III. DanilevichV. G. ThegenusGageaSalisb. of WesternTienShan. PhD Thesis, St. Petersburg,1996. IV. EgeubaevaR.A., GemedzhievaN.G. The current state of stocks of medicinal plants in some mountain ecosystems of Kazakhstan.Proceedings of the international scientific conference ‘”Results and prospects for the development of botanical science in Kazakhstan’, 2002. V. Kotukhov Yu.A. New species of the genus Gagea (Liliaceae) from Southern Altai. Bot. Journal.1989;74(11). VI. KotukhovYu.A. ListofvascularplantsofKazakhstanAltai. Botan. Researches ofSiberiaandKazakhstan.2005;11. VII. KotukhovYu. The current state of populations of rare and endangered plants in Eastern Kazakhstan. Almaty: AST, 2009. VIII. Kotukhov Yu.A., DanilovaA.N., AnufrievaO.A. Synopsisoftheonions (AlliumL.) oftheKazakhstanAltai, Sauro-ManrakandtheZaisandepression. BotanicalstudiesofSiberiaandKazakhstan. 2011;17: 3-33. IX. Kotukhov, Yu.A., Baytulin, I.O. Rareandendangered, endemicandrelictelementsofthefloraofKazakhstanAltai. MaterialsoftheIntern. scientific-practical. conf. ‘Sustainablemanagementofprotectedareas’.Almaty: Ridder, 2010. X. Krasnoborov I.M. et al. The determinant of plants of the Republic of Altai. Novosibirsk: SB RAS, 2012. XI. Levichev I.G. On the species status of Gagea Rubicunda. Botanical Journal.1997;6:71-76. XII. Levichev I.G. A new species of the genus Gagea (Liliaceae). Botanical Journal. 2000;7: 186-189. XIII. Levichev I.G., Jangb Chang-gee, Seung Hwan Ohc, Lazkovd G.A.A new species of genus GageaSalisb.(Liliaceae) from Kyrgyz Republic (Western Tian Shan, Chatkal Range, Sary-Chelek Nature Reserve). Journal of Asia-Pacific Biodiversity.2019; 12: 341-343. XIV. Peterson A., Levichev I.G., Peterson J. Systematics of Gagea and Lloydia (Liliaceae) and infrageneric classification of Gagea based on molecular and morphological data. Molecular Phylogenetics and Evolution.2008; 46. XV. Peruzzi L., Peterson A., Tison J.-M., Peterson J. Phylogenetic relationships of GageaSalisb.(Liliaceae) in Italy, inferred from molecular and morphological data matrices. Plant Systematics and Evolution; 2008: 276. XVI. Rib R.D. Honey plants of Kazakhstan. Advertising Digest, 2013. XVII. Scherbakova L.I., Shirshikova N.A. Flora of medicinal plants in the vicinity of Ust-Kamenogorsk. Collection of materials of the scientific-practical conference ‘Unity of Education, Science and Innovation’. Ust-Kamenogorsk: EKSU, 2011. XVIII. syganovA.P. PrimrosesofEastKazakhstan. Ust-Kamenogorsk: EKSU, 2001. XIX. Tsyganov A.P. Flora and vegetation of the South Altai Tarbagatay. Berlin: LAP LAMBERT,2014. XX. Utyasheva, T.R., Berezovikov, N.N., Zinchenko, Yu.K. ProceedingsoftheMarkakolskStateNatureReserve. Ust-Kamenogorsk, 2009. XXI. Xinqi C, Turland NJ. Gagea. Flora of China.2000;24: 117-121. XXII. Zarrei M., Zarre S., Wilkin P., Rix E.M. Systematic revision of the genus GageaSalisb. (Liliaceae) in Iran.BotJourn Linn Soc.2007;154. XXIII. Zarrei M., Wilkin P., Ingroille M.J., Chase M.W. A revised infrageneric classification for GageaSalisb. (Tulipeae; Liliaceae): insights from DNA sequence and morphological data.Phytotaxa.2011:5. View | Download INFLUENCE OF SUCCESSION CROPPING ON ECONOMIC EFFICIENCY OF NO-TILL CROP ROTATIONS Authors: Victor K. Dridiger,Roman S. Stukalov,Rasul G. Gadzhiumarov,Anastasiya A. Voropaeva,Viktoriay A. Kolomytseva, DOI: https://doi.org/10.26782/jmcms.spl.10/2020.06.00042 Abstract: This study was aimed at examining the influence of succession cropping on the economic efficiency of no-till field crop rotations on the black earth in the zone of unstable moistening of the Stavropol krai. A long-term stationary experiment was conducted to examine for the purpose nine field crop rotation patterns different in the number of fields (four to six), set of crops, and their succession in crop rotation. The respective shares of legumes, oilseeds, and cereals in the cropping pattern were 17 to 33, 17 to 40, and 50 to 67 %. It has been established that in case of no-till field crop cultivation the economic efficiency of plant production depends on the set of crops and their succession in rotation. The most economically efficient type of crop rotation is the soya-winter wheat-peas-winter wheat-sunflower-corn six-field rotation with two fields of legumes: in this rotation 1 ha of crop rotation area yields 3 850 grain units per ha at a grain unit prime cost of 5.46 roubles; the plant production output return and profitability were 20,888 roubles per ha and 113 %, respectively. The high production profitabilities provided by the soya-winter wheat-sunflower four-field and the soya-winter-wheat-sunflower-corn-winter wheat five-field crop rotation are 108.7 and 106.2 %, respectively. The inclusion of winter wheat in crop rotation for two years in a row reduces the second winter wheat crop yield by 80 to 100 %, which means a certain reduction in the grain unit harvesting rate to 3.48-3.57 thousands per ha of rotation area and cuts the production profitability down to 84.4-92.3 %. This is why, no-till cropping should not include winter wheat for a second time Keywords: No-till technology,crop rotation,predecessor,yield,return,profitability, Refference: I Badakhova G. Kh. and Knutas A. V., Stavropol Krai: Modern Climate Conditions [Stavropol’skiykray: sovremennyyeklimaticheskiyeusloviya]. Stavropol: SUE Krai Communication Networks, 2007. II Cherkasov G. N. and Akimenko A. S. Scientific Basis of Modernization of Crop Rotations and Formation of Their Systems according to the Specializations of Farms in the Central Chernozem Region [Osnovy moderniz atsiisevooborotoviformirovaniyaikh sistem v sootvetstvii so spetsi-alizatsiyeykhozyaystvTsentral’nogoChernozem’ya]. Zemledelie. 2017; 4: 3-5. III Decree 330 of July 6, 2017 the Ministry of Agriculture of Russia “On Approving Coefficients of Converting to Agricultural Crops to Grain Units [Ob utverzhdeniikoeffitsiyentovperevoda v zernovyyee dinitsysel’s kokhozyaystvennykhkul’tur]. IV Dridiger V. K., About Methods of Research of No-Till Technology [O metodikeissledovaniytekhnologii No-till]//Achievements of Science and Technology of AIC (Dostizheniyanaukiitekhniki APK). 2016; 30 (4): 30-32. V Dridiger V. K. and Gadzhiumarov R. G. Growth, Development, and Productivity of Soya Beans Cultivated On No-Till Technology in the Zone of Unstable Moistening of Stavropol Region [Rost, razvitiyeiproduktivnost’ soiprivozdelyvaniipotekhnologii No-till v zone ne-ustoychivog ouvlazhneniyaStavropol’skogokraya]//Oil Crops RTBVNIIMK (Maslichnyyekul’turyNTBVNIIMK). 2018; 3 (175): 52–57. VI Dridiger V. K., Godunova E. I., Eroshenko F. V., Stukalov R. S., Gadzhiumarov, R. G., Effekt of No-till Technology on erosion resistance, the population of earthworms and humus content in soil (Vliyaniyetekhnologii No-till naprotivoerozionnuyuustoychivost’, populyatsiyudozhdevykhcherveyisoderzhaniyegumusa v pochve)//Research Journal of Pharmaceutical, Biological and Chemical Sciences. 2018; 9 (2): 766-770. VII Karabutov A. P., Solovichenko V. D., Nikitin V. V. et al., Reproduction of Soil Fertility, Productivity and Energy Efficiency of Crop Rotations [Vosproizvodstvoplodorodiyapochv, produktivnost’ ienergeticheskayaeffektivnost’ sevooborotov]. Zemledelie. 2019; 2: 3-7. VIII Kulintsev V. V., Dridiger V. K., Godunova E. I., Kovtun V. I., Zhukova M. P., Effekt of No-till Technology on The Available Moisture Content and Soil Density in The Crop Rotation [Vliyaniyetekhnologii No-till nasoderzhaniyedostupnoyvlagiiplotnost’ pochvy v sevoob-orote]// Research Journal of Pharmaceutical, Biological and Chemical Sciences. 2017; 8 (6): 795-99. IX Kulintsev V. V., Godunova E. I., Zhelnakova L. I. et al., Next-Gen Agriculture System for Stavropol Krai: Monograph [SistemazemledeliyanovogopokoleniyaStavropol’skogokraya: Monogtafiya]. Stavropol: AGRUS Publishers, Stavropol State Agrarian University, 2013. X Lessiter Frank, 29 reasons why many growers are harvesting higher no-till yields in their fields than some university scientists find in research plots//No-till Farmer. 2015; 44 (2): 8. XI Rodionova O. A. Reproduction and Exchange-Distributive Relations in Farming Entities [Vosproizvodstvoiobmenno-raspredelitel’nyyeotnosheniya v sel’skokhozyaystvennykhorganizatsiyakh]//Economy, Labour, and Control in Agriculture (Ekonomika, trud, upravleniye v sel’skomkhozyaystve). 2010; 1 (2): 24-27. XII Sandu I. S., Svobodin V. A., Nechaev V. I., Kosolapova M. V., and Fedorenko V. F., Agricultural Production Efficiency: Recommended Practices [Effektivnost’ sel’skokhozyaystvennogoproizvodstva (metodicheskiyerekomendatsii)]. Moscow: Rosinforagrotech, 2013. XIII Sotchenko V. S. Modern Corn Cultivation Technologies [Sovremennayatekhnologiyavozdelyvaniya]. Moscow: Rosagrokhim, 2009. View | Download DEVELOPMENT AND TESTING OF AUTONOMOUS PORTABLE SEISMOMETER DESIGNED FOR USE AT ULTRALOW TEMPERATURES IN ARCTIC ENVIRONMENT Authors: Mikhail A. Abaturov,Yuriy V. Sirotinskiy, DOI: https://doi.org/10.26782/jmcms.spl.10/2020.06.00043 Abstract: This paper is concerned with solving one of the issues of the general problem of designing geophysical equipment for the natural climatic environment of the Arctic. The relevance of the topic has to do with an increased global interest in this region. The paper is aimed at considering the basic principles of developing and the procedure of testing seismic instruments for use at ultralow climatic temperatures. In this paper the indicated issue is considered through the example of a seismic module designed for petroleum and gas exploration by passive seismoacoustic methods. The seismic module is a direct-burial portable unit of around 5 kg in weight, designed to continuously measure and record microseismic triaxial orthogonal (ZNE) noise in a range from 0.1 to 45 Hz during several days in autonomous mode. The functional chart of designing the seismic module was considered, and concrete conclusions were made for choosing the necessary components to meet the ultralow-temperature operational requirements. The conclusions made served for developing appropriate seismic module. In this case, the components and tools used included a SAFT MP 176065 xc low-temperature lithium cell, industrial-spec electronic component parts, a Zhaofeng Geophysical ZF-4.5 Chinese primary electrodynamic seismic sensor, housing seal parts made of frost-resistant silicone materials, and finely dispersed silica gel used as water-retaining sorbent to avoid condensation in the housing. The paper also describes a procedure of low-temperature collation tests at the lab using a New Brunswick Scientific freezing plant. The test results proved the operability of the developed equipment at ultralow temperatures down to -55°C. In addition, tests were conducted at low microseismic noises in the actual Arctic environment. The possibility to detect signals in a range from 1 to 10 Hz at the level close to the NLNM limit (the Peterson model) has been confirmed, which allows monitoring and exploring petroleum and gas deposits by passive methods. As revealed by this study, the suggested approaches are efficient in developing high-precision mobile seismic instruments for use at ultralow climatic temperatures. The solution of the considered instrumentation and methodical issues is of great practical significance as a constituent of the generic problem of Arctic exploration. Keywords: Seismic instrumentation,microseismic monitoring,Peterson model,geological exploration,temperature ratings,cooling test, Refference: I. AD797: Ultralow Distortion, Ultralow Noise Op Amp, Analog Devices, Inc., Data Sheet (Rev. K). Analog Devices, Inc. URL: https://www.analog.com/media/en/technical-documentation/data-sheets/AD797.pdf(Date of access September 2, 2019). II. Agafonov, V. M., Egorov, I. V., and Shabalina, A. S. Operating Principles and Technical Characteristics of a Small-Sized Molecular–Electronic Seismic Sensor with Negative Feedback [Printsipyraboty I tekhnicheskiyekharakteristikimalogabaritnogomolekulyarno-elektronnogoseysmodatchika s otritsatel’noyobratnoysvyaz’yu]. SeysmicheskiyePribory (Seismic Instruments). 2014; 50 (1): 1–8. DOI: 10.3103/S0747923914010022. III. Antonovskaya, G., Konechnaya, Ya.,Kremenetskaya, E., Asming, V., Kvaema, T., Schweitzer, J., Ringdal, F. Enhanced Earthquake Monitoring in the European Arctic. Polar Science. 2015; 1 (9): 158-167. 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Chao Xu, Junbo Wang, Deyong Chen, Jian Chen, Bowen Liu, Wenjie Qi, XichenZheng, Hua Wei, Guoqing Zhang. The Electrochemical Seismometer Based on a Novel Designed.Sensing Electrode for Undersea Exploration. 20th International Conference on Solid-State Sensors, Actuators and Microsystems &Eurosensors XXXIII (TRANSDUCERS &EUROSENSORS XXXIII). IEEE, 2019. DOI: 10.1109/TRANSDUCERS.2019.8808450. VIII. Chebotareva, I. Ya. New algorithms of emission tomography for passive seismic monitoring of a producing hydrocarbon deposit: Part I. Algorithms of processing and numerical simulation [Novyye algoritmyemissionnoyto mografiidlyapassivnogoseysmicheskogomonitoringarazrabatyvayemykhmestorozhdeniyuglevodorodov. Chast’ I: Algoritmyobrabotki I chislennoyemodelirovaniye]. FizikaZemli. 2010; 46(3):187-98. DOI: 10.1134/S106935131003002X IX. Danilov, A. V. and Konechnaya, Ya. V. Analytical comparison of seismic instruments for stationary surveys in the Arctic [Sravnitel’nyyanalizseysmicheskoyapparaturydlyastatsionarnykhnablyudeniy v Arktike]. DSYS. URL: https://dsys.ru/upload/id254_docPDF_FranzJosefLand.pdf(Date of access September 2, 2019). X. Dew point temperature calculator. Maple Tech. International LLC. URL: https://www.calculator.net/dew-point-calculator.html?airtemperature=20&airtemperatureunit=celsius&humidity=0.34&dewpoint=&dewpointunit=celsius&x=51&y=14(Date of access September 2, 2019). XI. Frolov, A. S. Matching of wave fields recorded by different geophysical receivers [Soglasovaniyevolnovykhpoley, poluchennykh s primeneniyemrazlichnoyregistriruyushcheyapparatury]. Abstracts IX International scientific and technical conference competition of young specialists “Geophysics-2013”. Saint-Petersburg: Gubkin University, 2013. URL: https://www.gubkin.ru/faculty/geology_and_geophysics/chairs_and_departments/exploration_geophysics_and_computers_systems/files/2013_SPb_Frolov.pdf. (Date of access September 2, 2019). XII. Gibbons, S. J., Asming, V., Fedorov, A., Fyen, J., Kero, J., Kozlovskaya, E., Kværna, T., Liszka, L., Näsholm, S.P., Raita, T., Roth, M., Tiira, T., Vinogradov, Yu. The European Arctic: A laboratory for seismoacoustic studies. Seism. Res. Letters. 2015; 86 (3): 917–928. XIII. GOST 8.395-80. State system for ensuring the uniformity of measurements. Reference conditions of measurements while calibrating. General requirements [Gosudarstvennayasistemaobespecheniyaedinstvaizmereniy. Normal’nyyeusloviyaizmereniypripoverke. Obshchiyetrebovaniya]. Moscow: Standartinform, 2008. URL: http://gostrf.com/normadata/1/4294821/4294821960.pdf (Date of access September 2, 2019). XIV. Guralp 6TD. Operators’ Guide. Document Number: MAN-T60-0002, Issue J: April, 2017. Guralp Systems Limited. 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Passive seismic tomography: A passive concept actively evolving. First Break. 2012; 30 (7): 83-90. XXII. Matveev, I. V. and Matveeva, N. V. Portable seismic recorder “SEISAR-5” with very low energy consumption for autonomous work in harsh climatic conditions [Portativnyyseysmicheskiyregistrator «Seysar-5» s ochen’ nizkimenergopotrebleniyemdlyaavtonomnoyraboty v slozhnykhklimatic heskikhusloviyakh]. Nauka I tekhnologicheskierazrabotki (Science and Technological Developments). 2017; 96 (3): 33-40. [Special Issue “Applied Geophysics: New Developments and Results. Part 1. Seismology and Seismic Exploration]. DOI: 10.21455/std2017.3-3. XXIII. Mishra, R. The Temperature Ratings of Electronic Parts.Electronics Cooling magazine. URL: http://www.electronics-cooling.com/2004/02/the-temperature-ratings-of-electronic-parts(Date of access September 2, 2019). XXIV. Moore, Sue E.; Stabeno, Phyllis J.; Van Pelt, Thomas I. The Synthesis of Arctic Research (SOAR) project. 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View | Download COMPARATIVE ANALYSIS OF RESULTS OF TREATMENT OF PATIENTS WITH FOOT PATHOLOGY WHO UNDERWENT WEIL OPEN OSTEOTOMY BY CLASSICAL METHOD AND WITHOUT STEOSYNTHESIS Authors: Yuriy V. Lartsev,Dmitrii A. Rasputin,Sergey D. Zuev-Ratnikov,Pavel V.Ryzhov,Dmitry S. Kudashev,Anton A. Bogdanov, DOI: https://doi.org/10.26782/jmcms.spl.10/2020.06.00044 Abstract: The article considers the problem of surgical correction of the second metatarsal bone length. The article analyzes the results of treatment of patients with excess length of the second metatarsal bones that underwent osteotomy with and without osteosynthesis. The results of treatment of patients who underwent metatarsal shortening due to classical Weil-osteotomy with and without osteosynthesis were analyzed. The first group consisted of 34 patients. They underwent classical Weil osteotomy. The second group included 44 patients in whomosteotomy of the second metatarsal bone were not by the screw. When studying the results of the treatment in the immediate postoperative period, weeks 6, 12, slightly better results were observed in patients of the first group, while one year after surgical treatment the results in both groups were comparable. One year after surgical treatment, there were 2.9% (1 patient) of unsatisfactory results in the first group and 4.5% (2 patients) in the second group. Considering the comparability of the results of treatment in remote postoperative period, the choice of concrete method remains with the operating surgeon. Keywords: Flat feet,hallux valgus,corrective osteotomy,metatarsal bones, Refference: I. A novel modification of the Stainsby procedure: surgical technique and clinical outcome [Text] / E. Concannon, R. MacNiocaill, R. Flavin [et al.] // Foot Ankle Surg. – 2014. – Dec., Vol. 20(4). – P. 262–267. II. Accurate determination of relative metatarsal protrusion with a small intermetatarsal angle: a novel simplified method [Text] / L. Osher, M.M. Blazer, S. Buck [et al.] // J. Foot Ankle Surg. – 2014. – Sep.-Oct., Vol. 53(5). – P. 548–556. III. Argerakis, N.G. The radiographic effects of the scarf bunionectomy on rearfoot alignment [Text] / N.G. Argerakis, L.Jr. Weil, L.S. Sr. Weil // Foot Ankle Spec. – 2015. – Apr., Vol. 8(2). – P. 89–94. IV. Bauer, T. Percutaneous forefoot surgery [Text] / T. Bauer // Orthop. Traumatol. Surg. Res. – 2014. – Feb., Vol. 100(1 Suppl.). – P. S191–S204. V. Biomechanical Evaluation of Custom Foot Orthoses for Hallux Valgus Deformity [Text] // J. Foot Ankle Surg. – 2015. – Sep.-Oct., Vol.54(5). – P. 852–855. VI. Chopra, S. Characterization of gait in female patients with moderate to severe hallux valgus deformity [Text] / S. Chopra, K. Moerenhout, X. Crevoisier // Clin. Biomech. (Bristol, Avon). – 2015. – Jul., Vol. 30(6). – P. 629–635. VII. Computer assisted planning and custom-made surgical guide for malunited pronation deformity after first metatarsophalangeal joint arthrodesis in rheumatoid arthritis: a case report [Text] / M. Hirao, S. Ikemoto, H. Tsuboi [et al.] // Comput. Aided Surg. – 2014. – Vol. 19(1-3). – P. 13–19. VIII. Correlation between static radiographic measurements and intersegmental angular measurements during gait using a multisegment foot model [Text] / D.Y. Lee, S.G. Seo, E.J. Kim [et al.] // Foot Ankle Int. – 2015. – Jan., Vol.36(1). – P. 1–10. IX. Correlative study between length of first metatarsal and transfer metatarsalgia after osteotomy of first metatarsal [Text]: [Article in Chinese] / F.Q. Zhang, B.Y. Pei, S.T. Wei [et al.] // Zhonghua Yi XueZaZhi. – 2013. – Nov. 19, Vol. 93(43). – P. 3441–3444. X. Dave, M.H. Forefoot Deformity in Rheumatoid Arthritis: A Comparison of Shod and Unshod Populations [Text] / M.H. Dave, L.W. Mason, K. Hariharan // Foot Ankle Spec. – 2015. – Oct., Vol. 8(5). – P. 378–383. XI. Does arthrodesis of the first metatarsophalangeal joint correct the intermetatarsal M1M2 angle? Analysis of a continuous series of 208 arthrodeses fixed with plates [Text] / F. Dalat, F. Cottalorda, M.H. Fessy [et al.] // Orthop. Traumatol. Surg. Res. – 2015. – Oct., Vol. 101(6). – P. 709–714. XII. Dynamic plantar pressure distribution after percutaneous hallux valgus correction using the Reverdin-Isham osteotomy [Text]: [Article in Spanish] / G. Rodríguez-Reyes, E. López-Gavito, A.I. Pérez-Sanpablo [et al.] // Rev. Invest. Clin. – 2014. – Jul., Vol. 66, Suppl. 1. – P. S79-S84. XIII. Efficacy of Bilateral Simultaneous Hallux Valgus Correction Compared to Unilateral [Text] / A.V. Boychenko, L.N. Solomin, S.G. Parfeyev [et al.] // Foot Ankle Int. – 2015. – Nov., Vol. 36(11). – P. 1339–1343. XIV. Endolog technique for correction of hallux valgus: a prospective study of 30 patients with 4-year follow-up [Text] / C. Biz, M. Corradin, I. Petretta [et al.] // J. OrthopSurg Res. – 2015. – Jul. 2, № 10. – P. 102. XV. First metatarsal proximal opening wedge osteotomy for correction of hallux valgus deformity: comparison of straight versus oblique osteotomy [Text] / S.H. Han, E.H. Park, J. Jo [et al.] // Yonsei Med. J. – 2015. – May, Vol. 56(3). – P. 744–752. XVI. Long-term outcome of joint-preserving surgery by combination metatarsal osteotomies for shortening for forefoot deformity in patients with rheumatoid arthritis [Text] / H. Niki, T. Hirano, Y. Akiyama [et al.] // Mod. Rheumatol. – 2015. – Sep., Vol. 25(5). – P. 683–638. XVII. Maceira, E. Transfer metatarsalgia post hallux valgus surgery [Text] / E. Maceira, M. Monteagudo // Foot Ankle Clin. – 2014. – Jun., Vol. 19(2). – P.285–307. XVIII. Nielson, D.L. Absorbable fixation in forefoot surgery: a viable alternative to metallic hardware [Text] / D.L. Nielson, N.J. Young, C.M. Zelen // Clin. Podiatr. Med. Surg. – 2013. – Jul., Vol. 30(3). – P. 283–293 XIX. Patient’s satisfaction after outpatient forefoot surgery: Study of 619 cases [Text] / A. Mouton, V. Le Strat, D. Medevielle [et al.] // Orthop. Traumatol. Surg. Res. – 2015. – Oct., Vol. 101(6 Suppl.). – P. S217–S220. XX. Preference of surgical procedure for the forefoot deformity in the rheumatoid arthritis patients–A prospective, randomized, internal controlled study [Text] / M. Tada, T. Koike, T. Okano [et al.] // Mod. Rheumatol. – 2015. – May., Vol. 25(3). – P.362–366. XXI. Redfern, D. Percutaneous Surgery of the Forefoot [Text] / D. Redfern, J. Vernois, B.P. Legré // Clin. Podiatr. Med. Surg. – 2015. – Jul., Vol. 32(3). – P. 291–332. XXII. Singh, D. Bullous pemphigoid after bilateral forefoot surgery [Text] / D. Singh, A. Swann // Foot Ankle Spec. – 2015. – Feb., Vol. 8(1). – P. 68–72. XXIII. Treatment of moderate hallux valgus by percutaneous, extra-articular reverse-L Chevron (PERC) osteotomy [Text] / J. Lucas y Hernandez, P. Golanó, S. Roshan-Zamir [et al.] // Bone Joint J. – 2016. – Mar., Vol. 98-B(3). – P. 365–373. XXIV. Weil, L.Jr. Scarf osteotomy for correction of hallux abducto valgus deformity [Text] / L.Jr. Weil, M. Bowen // Clin. Podiatr. Med. Surg. – 2014. – Apr., Vol.31(2). – P. 233–246. View | Download QUANTITATIVE ULTRASONOGRAPHY OF THE STOMACH AND SMALL INTESTINE IN HEALTHYDOGS Authors: Roman A. Tcygansky,Irina I. Nekrasova,Angelina N. Shulunova,Alexander I.Sidelnikov, DOI: https://doi.org/10.26782/jmcms.spl.10/2020.06.00045 Abstract: Purpose.To determine the quantitative echogenicity indicators (and their ratio) of the layers of stomach and small intestine wall in healthy dogs. Methods. A prospective 3-year study of 86 healthy dogs (aged 1-7 yrs) of different breeds and of both sexes. Echo homogeneity and echogenicity of the stomach and intestines wall were determined by the method of Silina, T.L., et al. (2010) in absolute values ​​of average brightness levels of ultrasound image pixels using the 8-bit scale with 256 shades of gray. Results. Quantitative echogenicity indicators of the stomach and the small intestine wall in dogs were determined. Based on the numerical values ​​characterizing echogenicity distribution in each layer of a separate structure of the digestive system, the coefficient of gastric echogenicity is determined as 1:2.4:1.1 (mucosa/submucosa/muscle layers, respectively), the coefficient of duodenum and jejunum echogenicity is determined as 1:3.5:2 and that of ileum is 1:1.8:1. Clinical significance. The echogenicity coefficient of the wall of the digestive system allows an objective assessment of the stomach and intestines wall and can serve as the basis for a quantitative assessment of echogenicity changes for various pathologies of the digestive system Keywords: Ultrasound (US),echogenicity,echogenicity coefficient,digestive system,dogs,stomach,intestines, Refference: I. Agut, A. Ultrasound examination of the small intestine in small animals // Veterinary focus. 2009.Vol. 19. No. 1. P. 20-29. II. Bull. 4.RF patent 2398513, IPC51A61B8 / 00 A61B8 / 14 (2006.01) A method for determining the homoechogeneity and the degree of echogenicity of an ultrasound image / T. Silina, S. S. Golubkov. – No. 2008149311/14; declared 12/16/2008; publ. 09/10/2010 III. Choi, M., Seo, M., Jung, J., Lee, K., Yoon, J., Chang, D., Park, RD. Evaluation of canine gastric motility with ultrasonography // J. of Veterinary Medical Science. – 2002. Vol. 64. – № 1. – P. 17-21. IV. Delaney, F., O’Brien, R.T., Waller, K.Ultrasound evaluation of small bowel thickness compared to weight in normal dogs // Veterinary Radiology and Ultrasound. 2003 Vol. 44, № 5. Р 577-580. V. Diana, A., Specchi, S., Toaldo, M.B., Chiocchetti, R., Laghi, A., Cipone, M. Contrast-enhanced ultrasonography of the small bowel in healthy cats // Veterinary Radiology and Ultrasound. – 2011. – Vol. 52, № 5. – Р. 555-559. VI. Garcia, D.A.A., Froes, T.R. Errors in abdominal ultrasonography in dogs and cats // J. of Small Animal Practice. – 2012. Vol. 53. – № 9. – P. 514-519. VII. Garcia, D.A.A., Froes, T.R. Importance of fasting in preparing dogs for abdominal ultrasound examination of specific organs // J. of Small Animal Practice. – 2014. Vol. 55. – № 12. – P. 630-634. VIII. Gaschen, L., Granger, L.A., Oubre, O., Shannon, D., Kearney, M., Gaschen, F. The effects of food intake and its fat composition on intestinal echogenicity in healthy dogs // Veterinary Radiology and Ultrasound. 2016. Vol. 57. № 5. P. 546-550 IX. Gaschen, L., Kircher, P., Stussi, A., Allenspach, K., Gaschen, F., Doherr, M., Grone, A. Comparison of ultrasonographic findings with clinical activity index (CIBDAI) and diagnosis in dogs with chronic enteropathies // Veterinary radiology and ultrasound. – 2008. – Vol. 49. – № 1. – Р. 56-64. X. Gil, E.M.U. Garcia, D.A.A. Froes, T.R. In utero development of the fetal intestine: Sonographic evaluation and correlation with gestational age and fetal maturity in dogs // Theriogenology. 2015. Vol. 84, №5. Р. 681-686. XI. Gladwin, N.E. Penninck, D.G., Webster, C.R.L. Ultrasonographic evaluation of the thickness of the wall layers in the intestinal tract of dogs // American Journal of Veterinary Research. 2014. Vol. 75, №4. Р. 349-353. XII. Gory, G., Rault, D.N., Gatel, L, Dally, C., Belli, P., Couturier, L., Cauvin, E. Ultrasonographic characteristics of the abdominal esophagus and cardia in dogs // Veterinary Radiology and Ultrasound. 2014. Vol. 55, № 5. P. 552-560. XIII. Günther, C.S. Lautenschläger, I.E., Scholz, V.B. Assessment of the inter- and intraobserver variability for sonographical measurement of intestinal wall thickness in dogs without gastrointestinal diseases | [Inter-und Intraobserver-Variabilitätbei der sonographischenBestimmung der Darmwanddicke von HundenohnegastrointestinaleErkrankungen] // Tierarztliche Praxis Ausgabe K: Kleintiere – Heimtiere. 2014. Vol. 42 №2. Р. 71-78. XIV. Hanazono, K., Fukumoto, S., Hirayama, K., Takashima, K., Yamane, Y., Natsuhori, M., Kadosawa, T., Uchide, T. Predicting Metastatic Potential of gastrointestinal stromal tumors in dog by ultrasonography // J. of Veterinary Medical Science. – 2012. Vol. 74. – № 11. – P. 1477-1482. XV. Heng, H.G., Lim, Ch.K., Miller, M.A., Broman, M.M.Prevalence and significance of an ultrasonographic colonic muscularishyperechoic band paralleling the serosal layer in dogs // Veterinary Radiology and Ultrasound. 2015. Vol. 56 № 6. P. 666-669. XVI. Ivančić, M., Mai, W. Qualitative and quantitative comparison of renal vs. hepatic ultrasonographic intensity in healthy dogs // Veterinary Radiology and Ultrasound. 2008. Vol. 49. № 4. Р. 368-373. XVII. Lamb, C.R., Mantis, P. Ultrasonographic features of intestinal intussusception in 10 dogs // J. of Small Animal Practice. – 2008. Vol. 39. – № 9. – P. 437-441. XVIII. Le Roux, A. B., Granger, L.A., Wakamatsu, N, Kearney, M.T., Gaschen, L.Ex vivo correlation of ultrasonographic small intestinal wall layering with histology in dogs // Veterinary Radiology and Ultrasound.2016. Vol. 57. № 5. P. 534-545. XIX. Nielsen, T. High-frequency ultrasound of Peyer’s patches in the small intestine of young cats / T. Nielsen [et al.] // Journal of Feline Medicine and Surgery. – 2015. – Vol. 18, № 4. – Р. 303-309. XX. PenninckD.G. Gastrointestinal tract. In Nyland T.G., Mattoon J.S. (eds): Small Animal Diagnostic Ultrasound. Philadelphia: WB Saunders. 2002, 2nd ed. Р. 207-230. XXI. PenninckD.G. Gastrointestinal tract. In: PenninckD.G.,d´Anjou M.A. Atlas of Small Animal Ultrasonography. Blackwell Publishing, Iowa. 2008. Р. 281-318. XXII. Penninck, D.G., Nyland, T.G., Kerr, L.Y., Fisher, P.E. Ultrasonographic evaluation of gastrointestinal diseases in small animals // Veterinary Radiology. 1990. Vol. 31. №3. P. 134-141. XXIII. Penninck, D.G.,Webster, C.R.L.,Keating, J.H. The sonographic appearance of intestinal mucosal fibrosis in cats // Veterinary Radiology and Ultrasound. – 2010. – Vol. 51, № 4. – Р. 458-461. XXIV. Pollard, R.E.,Johnson, E.G., Pesavento, P.A., Baker, T.W., Cannon, A.B., Kass, P.H., Marks, S.L. Effects of corn oil administered orally on conspicuity of ultrasonographic small intestinal lesions in dogs with lymphangiectasia // Veterinary Radiology and Ultrasound. 2013. Vol. 54. № 4. P. 390-397. XXV. Rault, D.N., Besso, J.G., Boulouha, L., Begon, D., Ruel, Y. Significance of a common extended mucosal interface observed in transverse small intestine sonograms // Veterinary Radiology and Ultrasound. 2004. Vol. 45. №2. Р. 177-179. XXVI. Sutherland-Smith, J., Penninck, D.G., Keating, J.H., Webster, C.R.L. Ultrasonographic intestinal hyperechoic mucosal striations in dogs are associated with lacteal dilation // Veterinary Radiology and Ultrasound. – 2007. Vol. 48. – № 1. – P. 51-57. View | Download EVALUATION OF ADAPTIVE POTENTIAL IN MEDICAL STUDENTS IN THE CONTEXT OF SEASONAL DYNAMICS Authors: Larisa A. Merdenova,Elena A. Takoeva,Marina I. Nartikoeva,Victoria A. Belyayeva,Fatima S. Datieva,Larisa R. Datieva, DOI: https://doi.org/10.26782/jmcms.spl.10/2020.06.00046 Abstract: The aim of this work was to assess the functional reserves of the body to quantify individual health; adaptation, psychophysiological characteristics of the health quality of medical students in different seasons of the year. When studying the temporal organization of physiological functions, the rhythm parameters of physiological functions were determined, followed by processing the results using the Cosinor Analysis program, which reveals rhythms with an unknown period for unequal observations, evaluates 5 parameters of sinusoidal rhythms (mesor, amplitude, acrophase, period, reliability). The essence of desynchronization is the mismatch of circadian rhythms among themselves or destruction of the rhythms architectonics (instability of acrophases or their disappearance). Desynchronization with respect to the rhythmic structure of the body is of a disregulatory nature, most pronounced in pathological desynchronization. High neurotism, increased anxiety reinforces the tendency to internal desynchronization, which increases with stress. During examination stress, students experience a decrease in the stability of the temporary organization of the biosystem and the tension of adaptive mechanisms develops, which affects attention, mental performance and the quality of adaptation to the educational process. Time is shortened and the amplitude of the “initial minute” decreases, personal and situational anxiety develops, and the level of psychophysiological adaptation decreases. The results of the work are priority because they can be used in assessing quality and level of health. Keywords: Desynchronosis,biorhythms,psycho-emotional stress,mesor,acrophase,amplitude,individual minute, Refference: I. Arendt, J., Middleton, B. Human seasonal and circadian studies in Antarctica (Halley, 75_S) – General and Comparative Endocrinology. 2017: 250-259. (http://dx.doi.org/10.1016/j.ygcen.2017.05.010). II. BalandinYu.P. A brief methodological guide on the use of the agro-industrial complex “Health Sources” / Yu.P. Balandin, V.S. Generalov, V.F. Shishlov. Ryazan, 2007. III. Buslovskaya L.K. Adaptation reactions in students at exam stress/ L.K. Buslovskaya, Yu.P. Ryzhkova. Scientific bulletin of Belgorod State University. Series: Natural Sciences. 2011;17(21):46-52. IV. Chutko L. S. Sindromjemocionalnogovygoranija – Klinicheskie I psihologicheskieaspekty./ L.S Chutko. Moscow: MEDpress-inform, 2013. V. Eroshina K., Paul Wilkinson, Martin Mackey. The role of environmental and social factors in the occurrence of diseases of the respiratory tract in children of primary school age in Moscow. Medicine. 2013:57-71. VI. Fagrell B. “Microcirculation of the Skin”. The physiology and pharmacology of the microcirculation. 2013:423. VII. Gurova O.A. Change in blood microcirculation in students throughout the day. New research. 2013; 2 (35):66-71. VIII. Khetagurova L.G. – Stress/Ed. L.G. Khetagurov. Vladikavkaz: Project-Press Publishing House, 2010. IX. Khetagurova L.G., Urumova L.T. et al. Stress (chronomedical aspects). International Journal of Experimental Education 2010; 12: 30-31. X. Khetagurova L.G., Salbiev K.D., Belyaev S.D., Datieva F.S., Kataeva M.R., Tagaeva I.R. Chronopathology (experimental and clinical aspects/ Ed. L.G. Khetagurov, K.D. Salbiev, S.D.Belyaev, F.S. Datiev, M.R. Kataev, I.R. Tagaev. Moscow: Science, 2004. XI. KlassinaS.Ya. Self-regulatory reactions in the microvasculature of the nail bed of fingers in person with psycho-emotional stress. Bulletin of new medical technologies, 2013; 2 (XX):408-412. XII. Kovtun O.P., Anufrieva E.V., Polushina L.G. Gender-age characteristics of the component composition of the body in overweight and obese schoolchildren. Medical Science and Education of the Urals. 2019; 3:139-145. XIII. Kuchieva M.B., Chaplygina E.V., Vartanova O.T., Aksenova O.A., Evtushenko A.V., Nor-Arevyan K.A., Elizarova E.S., Efremova E.N. A comparative analysis of the constitutional features of various generations of healthy young men and women in the Rostov Region. Modern problems of science and education. 2017; 5:50-59. XIV. Mathias Adamsson1, ThorbjörnLaike, Takeshi Morita – Annual variation in daily light expo-sure and circadian change of melatonin and cortisol consent rations at a northern latitude with large seasonal differences in photoperiod length – Journal of Physiological Anthropology. 2017; 36: 6 – 15. XV. Merdenova L.A., Tagaeva I.R., Takoeva E.A. Features of the study of biological rhythms in children. The results of fundamental and applied research in the field of natural and technical sciences. Materials of the International Scientific and Practical Conference. Belgorod, 2017, pp. 119-123. XVI. Ogarysheva N.V. The dynamics of mental performance as a criterion for adapting to the teaching load. Bulletin of the Samara Scientific Center of the Russian Academy of Sciences. 2014;16:5 (1): S.636-638. XVII. Pekmezovi T. Gene-environment interaction: A genetic-epidemiological approach. Journal of Medical Biochemistry. 2010;29:131-134. XVIII. Rapoport S.I., Chibisov S.M. Chronobiology and chronomedicine: history and prospects/Ed. S.M. Chibisov, S.I. Rapoport ,, M.L. Blagonravova. Chronobiology and Chronomedicine: Peoples’ Friendship University of Russia (RUDN) Press. Moscow, 2018. XIX. Roustit M., Cracowski J.L. “Non-invasive assessment of skin microvascular function in humans: an insight into methods” – Microcirculation 2012; 19 (1): 47-64. XX. Rud V.O., FisunYu.O. – References of the circadian desinchronosis in students. Ukrainian Bulletin of Psychoneurology. 2010; 18(2) (63): 74-77. XXI. Takoeva Z. A., Medoeva N. O., Berezova D. T., Merdenova L. A. et al. Long-term analysis of the results of chronomonitoring of the health of the population of North Ossetia; Vladikavkaz Medical and Biological Bulletin. 2011; 12(12,19): 32-38. XXII. Urumova L.T., Tagaeva I.R., Takoeva E.A., Datieva L.R. – The study of some health indicators of medical students in different periods of the year. Health and education in the XXI century. 2016; 18(4): 94-97. XXIII. Westman J. – Complex diseases. In: Medical genetics for the modern clinician. USA: Lippincott Williams & Wilkins, 2006. XXIV. Yadrischenskaya T.V. Circadian biorhythms of students and their importance in educational activities. Problems of higher education. Pacific State University Press. 2016; 2:176-178. View | Download TRIADIC COMPARATIVE ANALYSIS Authors: Stanislav A.Kudzh,Victor Ya. Tsvetkov, DOI: https://doi.org/10.26782/jmcms.spl.10/2020.06.00047 Abstract: The present study of comparison methods based on the triadic model introduces the following concepts: the relation of comparability and the relation of comparison, and object comparison and attributive comparison. The difference between active and passive qualitative comparison is shown, two triadic models of passive and active comparison and models for comparing two and three objects are described. Triadic comparison models are proposed as an alternative to dyadic comparison models. Comparison allows finding the common and the different; this approach is proposed for the analysis of the nomothetic and ideographic method of obtaining knowledge. The nomothetic method identifies and evaluates the general, while the ideographic method searches for unique in parameters and in combinations of parameters. Triadic comparison is used in systems and methods of argumentation, as well as in the analysis of consistency/inconsistency. Keywords: Comparative analysis,dyad,triad,triadic model,comparability relation,object comparison,attributive comparison,nomothetic method,ideographic method, Refference: I. AltafS., Aslam.M.Paired comparison analysis of the van Baarenmodel using Bayesian approach with noninformativeprior.Pakistan Journal of Statistics and Operation Research 8(2) (2012) 259{270. II. AmooreJ. E., VenstromD Correlations between stereochemical assessments and organoleptic analysis of odorous compounds. Olfaction and Taste (2016) 3{17. III. BarnesJ., KlingerR. Embedding projection for targeted cross-lingual sentiment: model comparisons and a real-world study. Journal of Artificial Intelligence Research 66 (2019) 691{742. doi.org/10.1613/jair.1.11561 IV. Castro-SchiloL., FerrerE.Comparison of nomothetic versus idiographic-oriented methods for making predictions about distal outcomes from time series data. Multivariate Behavioral Research 48(2) (2013) 175{207. V. De BonaG.et al. Classifying inconsistency measures using graphs. Journal of Artificial Intelligence Research 66 (2019) 937{987. VI. FideliR. La comparazione. Milano: Angeli, 1998. VII. GordonT. F., PrakkenH., WaltonD. The Carneades model of argument and burden of proof. Artificial Intelligence 10(15) (2007) 875{896. VIII. GrenzS.J. The social god and the relational self: A Triad theology of the imago Dei. Westminster: John Knox Press, 2001. IX. HermansH.J. M.On the integration of nomothetic and idiographic research methods in the study of personal meaning.Journal of Personality 56(4) (1988) 785{812. X. JamiesonK. G., NowakR. Active ranking using pairwise comparisons.Advances in Neural Information Processing Systems (2011) 2240{2248. XI. JongsmaC.Poythress’s triad logic: a review essay. Pro Rege 42(4) (2014) 6{15. XII. KärkkäinenV.M. Trinity and Religious Pluralism: The Doctrine of the Trinity in Christian Theology of Religions. London: Routledge, 2017. XIII. KudzhS. A., TsvetkovV.Ya. Triadic systems. Russian Technology Magazine 7(6) (2019) 74{882. XIV. NelsonK.E.Some observations from the perspective of the rare event cognitive comparison theory of language acquisition.Children’s Language 6 (1987) 289{331. XV. NiskanenA., WallnerJ., JärvisaloM.Synthesizing argumentation frameworks from examples. Journal of Artificial Intelligence Research 66 (2019) 503{554. XVI. PührerJ.Realizability of three-valued semantics for abstract dialectical frameworks.Artificial Intelligence 278 (2020) 103{198. XVII. SwansonG.Frameworks for comparative research: structural anthropology and the theory of action. In: Vallier, Ivan (Ed.). Comparative methods in sociology: essays on trends and applications.Berkeley: University of California Press, 1971 141{202. XVIII. TsvetkovV.Ya.Worldview model as the result of education.World Applied Sciences Journal 31(2) (2014) 211{215. XIX. TsvetkovV. Ya. Logical analysis and variable scales. Slavic Forum 4(22) (2018) 103{109. XX. Wang S. et al. Transit traffic analysis zone delineating method based on Thiessen polygon. Sustainability 6(4) (2014) 1821{1832. View | Download DEVELOPING TECHNOLOGY OF CREATING WEAR-RESISTANT CERAMIC COATING FOR ICE CYLINDER". JOURNAL OF MECHANICS OF CONTINUA AND MATHEMATICAL SCIENCES spl10, nr 1 (28.06.2020). http://dx.doi.org/10.26782/jmcms.spl.10/2020.06.00048.

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