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Journal articles on the topic 'Cycle cover'

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Published: 10 March 2023

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1

Jamshy, Ury, and Michael Tarsi. "Short cycle covers and the cycle double cover conjecture." Journal of Combinatorial Theory, Series B 56, no. 2 (November 1992): 197–204. http://dx.doi.org/10.1016/0095-8956(92)90018-s.

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2

Hochbaum, Dorit S., and Eli V. Olinick. "The Bounded Cycle-Cover Problem." INFORMS Journal on Computing 13, no. 2 (May 2001): 104–19. http://dx.doi.org/10.1287/ijoc.13.2.104.10516.

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3

Silvestri, Selene, Gilbert Laporte, and Raffaele Cerulli. "The Rainbow Cycle Cover Problem." Networks 68, no. 4 (August 26, 2016): 260–70. http://dx.doi.org/10.1002/net.21700.

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4

Assel, Raymond A. "Classification of Annual Great Lakes Ice Cycles: Winters of 1973–2002*." Journal of Climate 18, no. 22 (November 15, 2005): 4895–905. http://dx.doi.org/10.1175/jcli3571.1.

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Abstract Annual seasonal average ice cover from 1973 to 2002 and associated dates of first ice, last ice, and ice duration are presented and discussed. The annual seasonal average ice cover of each Great Lake is used to define three ice cycle classes: mild, typical, and severe. About half of the severe ice cycles occurred from 1977 to 1982 and about half of the mild ice cycles occurred from 1998 to 2002. The seasonal progression of daily lake-averaged ice cover, spatial differences in ice cover, and differences among the Great Lakes for mild, typical, and severe ice cycles are discussed within the context of lake bathymetry and winter air temperatures. Seasonal average ice cover is larger on Lakes Superior, Erie, and Huron relative to Lakes Michigan and Ontario, because of shallower depths (for Erie and Huron) and lower air temperatures (for Superior) relative to Lakes Michigan and Ontario. This ice cycle classification scheme can be used to compare future Great Lakes ice cycle severity with this 30-winter benchmark.

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5

Wang, Yu Sheng, Wen Xuan Ma, Ming Li, and Hao Jin. "Method of Life Prediction of Engine Cylinder Cover." Advanced Materials Research 677 (March 2013): 236–40. http://dx.doi.org/10.4028/www.scientific.net/amr.677.236.

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Cylinder cover is an important component of the engine. It is damaged by low cycle thermal fatigue, high cycle thermal fatigue and creep in operation. Thus, the life and reliability of the cylinder cover are important criteria for engines. The temperature field and stress field of the cylinder cover are computed by the sequentially coupled analysis method: the elastic strain, plastic strain and creep strain of the dangerous point on the cylinder cover are analyzed in ten startup-working-shut down cycles; and it is proved in theory that low cycle thermal fatigue is the primary factor affecting the service life of the cylinder cover and the startup time of the engine is an appropriate parameter to estimate the life of thecylinder cover. The creep has little influence on the stress amplitude, and makes the mean stress increased. The relaxation is coexisting with creep in high temperature; it reduces the increase speed of mean stress. After finite cycles, the mean stress tends to constant gradually. Therefore, the creep-fatigue interaction can equal to thermo-mechanical fatigue whose stress amplitude and mean stress are constant. At last, the mean service life of cylinder is predicted.

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6

Galbiati, Giulia, Stefano Gualandi, and Francesco Maffioli. "On Minimum Reload Cost Cycle Cover." Electronic Notes in Discrete Mathematics 36 (August 2010): 81–88. http://dx.doi.org/10.1016/j.endm.2010.05.011.

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7

Galbiati, Giulia, Stefano Gualandi, and Francesco Maffioli. "On Minimum Reload Cost Cycle Cover." Discrete Applied Mathematics 164 (February 2014): 112–20. http://dx.doi.org/10.1016/j.dam.2011.12.006.

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8

Lai, Hong-Jian, and Hoifung Poon. "Cycle Cover Ratio of Regular Matroids." European Journal of Combinatorics 23, no. 8 (November 2002): 1007–14. http://dx.doi.org/10.1006/eujc.2002.0606.

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9

Chen, Zhi-Hong, Miaomiao Han, Hong-Jian Lai, and Mingquan Zhan. "Graphs with a 3-Cycle-2-Cover." Graphs and Combinatorics 31, no. 6 (January 13, 2015): 2103–11. http://dx.doi.org/10.1007/s00373-014-1516-z.

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10

Bagheri Gh., Behrooz, and Behnaz Omoomi. "Small Oriented Cycle Double Cover of Graphs." Bulletin of the Malaysian Mathematical Sciences Society 39, no. 1 (August 9, 2015): 219–25. http://dx.doi.org/10.1007/s40840-015-0169-2.

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11

KUNG, Tzu-Liang, and Hon-Chan CHEN. "Complete Cycle Embedding in Crossed Cubes with Two-Disjoint-Cycle-Cover Pancyclicity." IEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences E98.A, no. 12 (2015): 2670–76. http://dx.doi.org/10.1587/transfun.e98.a.2670.

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12

Willamo, T., T. Hackman, J. J. Lehtinen, M. J. Käpylä, N. Olspert, M. Viviani, and J. Warnecke. "Shapes of stellar activity cycles." Astronomy & Astrophysics 638 (June 2020): A69. http://dx.doi.org/10.1051/0004-6361/202037666.

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Context. Magnetic activity cycles are an important phenomenon both in the Sun and other stars. The shape of the solar cycle is commonly characterised by a fast rise and a slower decline, but not much attention has been paid to the shape of cycles in other stars. Aims. Our aim is to study whether the asymmetric shape of the solar cycle is common in other stars as well, and compare the cycle asymmetry to other stellar parameters. We also study the differences in the shape of the solar cycle, depending on the activity indicator that is used. The observations are also compared to simulated activity cycles. Methods. We used the chromospheric Ca II H&K data from the Mount Wilson Observatory HK Project. In this data set, we identified 47 individual cycles from 18 stars. We used the statistical skewness of a cycle as a measure of its asymmetry, and compared this to other stellar parameters. A similar analysis has been performed for magnetic cycles extracted from direct numerical magnetohydrodynamic simulations of solar-type convection zones. Results. The shape of the solar cycle (fast rise and slower decline) is common in other stars as well, although the Sun seems to have particularly asymmetric cycles. Cycle-to-cycle variations are large, but the average shape of a cycle is still fairly well represented by a sinusoid, although this does not take its asymmetry into account. We find only slight correlations between the cycle asymmetry and other stellar parameters. There are large differences in the shape of the solar cycle, depending on the activity indicator that is used. The simulated cycles differ in the symmetry of global simulations that cover the full longitudinal range and are therefore capable of exciting non-axisymmetric large-scale dynamo modes, and wedge simulations that cover a partial extent in longitude, where only axisymmetric large-scale modes are possible. The former preferentially produce positive and the latter negative skewness.

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13

Massons, J., D. Domingo, and J. Lorente. "Seasonal cycle of cloud cover analyzed using Meteosat images." Annales Geophysicae 16, no. 3 (March 31, 1998): 331–41. http://dx.doi.org/10.1007/s00585-998-0331-3.

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Abstract. A cloud-detection method was used to retrieve cloudy pixels from Meteosat images. High spatial resolution (one pixel), monthly averaged cloud-cover distribution was obtained for a 1-year period. The seasonal cycle of cloud amount was analyzed. Cloud parameters obtained include the total cloud amount and the percentage of occurrence of clouds at three altitudes. Hourly variations of cloud cover are also analyzed. Cloud properties determined are coherent with those obtained in previous studies.Key words. Cloud cover · Meteosat

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14

Khachay, Michael, and Katherine Neznakhina. "Approximation of Euclidean k-size cycle cover problem." Croatian Operational Research Review 5, no. 2 (December 30, 2014): 177–88. http://dx.doi.org/10.17535/crorr.2014.0006.

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15

Graf, Kaspar, Ulrich Schumann, Hermann Mannstein, and Bernhard Mayer. "Aviation induced diurnal North Atlantic cirrus cover cycle." Geophysical Research Letters 39, no. 16 (August 28, 2012): n/a. http://dx.doi.org/10.1029/2012gl052590.

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16

Zhang, Cun-Quan. "Parity Subgraph, Shortest Cycle Cover, and Postman Tour." SIAM Journal on Discrete Mathematics 6, no. 3 (August 1993): 428–31. http://dx.doi.org/10.1137/0406034.

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17

Xu, Wenzheng, Weifa Liang, and Xiaola Lin. "Approximation Algorithms for Min-Max Cycle Cover Problems." IEEE Transactions on Computers 64, no. 3 (March 2015): 600–613. http://dx.doi.org/10.1109/tc.2013.2295609.

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18

Huck, Andreas. "Reducible configurations for the cycle double cover conjecture." Discrete Applied Mathematics 99, no. 1-3 (February 2000): 71–90. http://dx.doi.org/10.1016/s0166-218x(99)00126-2.

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19

Lai, Hong-Jian, and Xiangwen Li. "Small cycle cover of 2-connected cubic graphs." Discrete Mathematics 269, no. 1-3 (July 2003): 295–302. http://dx.doi.org/10.1016/s0012-365x(03)00058-x.

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20

Tarsi, Michael. "Semi-duality and the cycle double cover conjecture." Journal of Combinatorial Theory, Series B 41, no. 3 (December 1986): 332–40. http://dx.doi.org/10.1016/0095-8956(86)90054-7.

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21

M, Joice Punitha, and Suganya A. "Cover Pebbling Number of Some Cycle Related Graphs." Journal of Computer and Mathematical Sciences 10, no. 6 (June 30, 2019): 1322–31. http://dx.doi.org/10.29055/jcms/1127.

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22

Genest, François. "Circle graphs and the cycle double cover conjecture." Discrete Mathematics 309, no. 11 (June 2009): 3714–25. http://dx.doi.org/10.1016/j.disc.2008.02.004.

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23

Wei, Chao, Rong-Xia Hao, and Jou-Ming Chang. "Two-disjoint-cycle-cover bipancyclicity of balanced hypercubes." Applied Mathematics and Computation 381 (September 2020): 125305. http://dx.doi.org/10.1016/j.amc.2020.125305.

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24

Moreno, Jorge, Simone Martins, and Yuri Frota. "A note on the rainbow cycle cover problem." Networks 73, no. 1 (July 10, 2018): 38–47. http://dx.doi.org/10.1002/net.21833.

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25

Büyükçolak, Yasemin, Didem Gözüpek, and Sibel Özkan. "Minimum reload cost cycle cover in complete graphs." Networks 74, no. 3 (April 10, 2019): 274–86. http://dx.doi.org/10.1002/net.21884.

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26

Eastman, Ryan, and Stephen G. Warren. "Diurnal Cycles of Cumulus, Cumulonimbus, Stratus, Stratocumulus, and Fog from Surface Observations over Land and Ocean." Journal of Climate 27, no. 6 (March 13, 2014): 2386–404. http://dx.doi.org/10.1175/jcli-d-13-00352.1.

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Abstract A worldwide climatology of the diurnal cycles of low clouds is obtained from surface observations made eight or four times daily at 3- or 6-h intervals from weather stations and ships. Harmonic fits to the daily cycle are made for 5388 weather stations with long periods of record, and for gridded data on a 5° × 5° or 10° × 10° latitude–longitude grid over land and ocean areas separately. For all cloud types, the diurnal cycle has larger amplitude over land than over ocean, on average by a factor of 2. Diurnal cycles of cloud amount appear to be proprietary to each low cloud type, showing the same cycle regardless of whether that type dominates the diurnal cycle of cloud cover. Stratiform cloud amounts tend to peak near sunrise, while cumuliform amounts peak in the afternoon; however, cumulonimbus amounts peak in the early morning over the ocean. Small latitudinal and seasonal variation is apparent in the phase and amplitude of the diurnal cycles of each type. Land areas show more seasonality compared to ocean areas with respect to which type dominates the diurnal cycle. Multidecadal trends in low cloud cover are small and agree between day and night regardless of the local climate. Diurnal cycles of base height are much larger over land than over the ocean. For most cloud types, the bases are highest in the midafternoon or early evening.

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27

Beniaich, Adnane, Marx Leandro Naves Silva, Fabio Arnaldo Pomar Avalos, Michele Duarte de Menezes, and Bernardo Moreira Cândido. "Determination of vegetation cover index under different soil management systems of cover plants by using an unmanned aerial vehicle with an onboard digital photographic camera." Semina: Ciências Agrárias 40, no. 1 (February 15, 2019): 49. http://dx.doi.org/10.5433/1679-0359.2019v40n1p49.

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The permanent monitoring of vegetation cover is important to guarantee a sustainable management of agricultural activities, with a relevant role in the reduction of water erosion. This monitoring can be carried out through different indicators such as vegetation cover indices. In this study, the vegetation cover index was obtained using uncalibrated RGB images generated from a digital photographic camera on an unmanned aerial vehicle (UAV). In addition, a comparative study with 11 vegetation indices was carried out. The vegetation indices CIVE and EXG presented a better performance and the index WI presented the worst performance in the vegetation classification during the cycles of jack bean and millet, according to the overall accuracy and Kappa coefficient. Vegetation indices were effective tools in obtaining soil cover index when compared to the standard Stocking method, except for the index WI. Architecture and cycle of millet and jack bean influenced the behavior of the studied vegetation indices. Vegetation indices generated from RGB images obtained by UAV were more practical and efficient, allowing a more frequent monitoring and in a wider area during the crop cycle.

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28

Reznichenko, Natalya, Tim Davies, James Shulmeister, and Mauri McSaveney. "Effects of debris on ice-surface melting rates: an experimental study." Journal of Glaciology 56, no. 197 (2010): 384–94. http://dx.doi.org/10.3189/002214310792447725.

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AbstractHere we report a laboratory study of the effects of debris thickness, diurnally cyclic radiation and rainfall on melt rates beneath rock-avalanche debris and sand (representing typical highly permeable supraglacial debris). Under continuous, steady-state radiation, sand cover >50 mm thick delays the onset of ice-surface melting by >12 hours, but subsequent melting matches melt rates of a bare ice surface. Only when diurnal cycles of radiation are imposed does the debris reduce the longterm rate of ice melt beneath it. This is because debris >50 mm thick never reaches a steady-state heat flux, and heat acquired during the light part of the cycle is partially dissipated to the atmosphere during the nocturnal part of the cycle, thereby continuously reducing total heat flux to the ice surface underneath. The thicker the debris, the greater this effect. Rain advects heat from high-permeability supraglacial debris to the ice surface, thereby increasing ablation where thin, highly porous material covers the ice. In contrast, low-permeability rock-avalanche material slows water percolation, and heat transfer through the debris can cease when interstitial water freezes during the cold/night part of the cycle. This frozen interstitial water blocks heat advection to the ice–debris contact during the warm/day part of the cycle, thereby reducing overall ablation. The presence of metre-deep rock-avalanche debris over much of the ablation zone of a glacier can significantly affect the mass balance, and thus the motion, of a glacier. The length and thermal intensity of the diurnal cycle are important controls on ablation, and thus both geographical location and altitude significantly affect the impact of debris on glacial melting rates; the effect of debris cover is magnified at high altitude and in lower latitudes.

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29

Arumugam, S., Indra Rajasingh, and P. Roushini Leely Pushpam. "Characterization of a class of graphs with unique minimum graphoidal cover." Tamkang Journal of Mathematics 34, no. 4 (December 31, 2003): 317–26. http://dx.doi.org/10.5556/j.tkjm.34.2003.234.

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A graphoidal cover of a graph $ G$ is a collection $ \psi$ of (not necessarily open) paths in $ G$ such that every vertex of $ G$ is an internal vertex of at most one path in $ \psi$ and every edge of $ G$ is in exactly one path in $ \psi$. The minimum cardinality of a graphoidal cover of $ G$ is called the graphoidal covering number of $ G$ and is denoted by $ \eta$ . Two graphoidal covers $ \psi_1$ and $ \psi_2$ of a graph $ G$ are said to be isomorphic if there exists an automorphism $ f$ of $ G$ such that $ \psi_2=\{f(P)/P\in \psi_1\}$. A graph $ G$ is said to have a unique minimum graphoidal cover if any two minimum graphoidal covers of $ G$ are isomorphic. In this paper we characterize the class of all graphs $ G$ with a unique minimum graphoidal cover when $ \delta=2$ and no end block of $ G$ is a cycle.

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30

Rankin, W. T., and Elliot J. Tramer. "Understory succession and the gap regeneration cycle in a Tsuga canadensis forest." Canadian Journal of Forest Research 32, no. 1 (January 1, 2002): 16–23. http://dx.doi.org/10.1139/x01-168.

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We examined understory succession in current and former canopy gaps in mature Tsuga canadensis (L.) Carrière forests in southeastern Ohio. First, we reconstructed understory succession in current gaps by sampling 28 gaps ranging from 0 to 9 years. Second, we reconstructed the gap history of a single Tsuga community by clustering release events evident in the growth rings of 156 trees. The two reconstructions formed an 80-year chronosequence, allowing us to examine both short-term effects of gaps as well as long-term effects of closed-canopy conditions on eight common understory species. Understory cover was highest in canopy gaps. All eight understory species in the study exhibited higher cover in canopy gaps than beneath the closed Tsuga canopy. In addition, one species increased percent biomass allocated towards shoots. Although most species increased cover in gaps, different species reached peak cover at different times during gap succession. Understory species reaching peak cover early in the life of the gap were also present beneath the closed canopy and invested primarily in lateral biomass. Understory species reaching peak cover late in the life of the gap, however, were confined to gaps and invested primarily in vertical biomass. Understory cover declined during gap closure; this decline was most pronounced 20 years following gap formation. Thereafter, total understory cover increased slightly, although never to gap levels.

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31

Li, Tian Xia, and Feng Chen. "Application of Pro/Engineer in Mobile Front Cover Product Development and Mould Design." Advanced Materials Research 823 (October 2013): 577–80. http://dx.doi.org/10.4028/www.scientific.net/amr.823.577.

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In the mobile industry, mobile cover is the primary manifestations of the look of the phone, which is made up of complex curved surface, the cover design and directly affect the quality of phone design efficiency and competitiveness. Take mobile front cover as the example, introduced the process of product modeling and mold design using the Pro/E software. Elaborated this product 3D design method in detail, introduced with emphasis the mold design cycle and design of the parting surface, the mold die space and the core. Software applications shorten product cycles, mold design and processing cycles, improving the accuracy of product design, and reduce product development and tooling costs, proof of use efficiency characteristics of Pro/E plastic mould design. Keywords-c Pro/E; 3D Model ; Mobile Front Cover ; Mould Design

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32

Pesant, Gilles, and Patrick Soriano. "An Optimal Strategy for the Constrained Cycle Cover Problem." Electronic Notes in Discrete Mathematics 1 (March 1999): 48–60. http://dx.doi.org/10.1016/s1571-0653(04)00006-x.

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33

Hassin, Refael, Asaf Levin, and Shlomi Rubinstein. "Approximation algorithms for maximum latency and partial cycle cover." Discrete Optimization 6, no. 2 (May 2009): 197–205. http://dx.doi.org/10.1016/j.disopt.2008.12.003.

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34

Klein, Philip, and Clifford Stein. "A parallel algorithm for approximating the minimum cycle cover." Algorithmica 9, no. 1 (January 1993): 23–31. http://dx.doi.org/10.1007/bf01185336.

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35

Yu, Wei, Zhaohui Liu, and Xiaoguang Bao. "New approximation algorithms for the minimum cycle cover problem." Theoretical Computer Science 793 (November 2019): 44–58. http://dx.doi.org/10.1016/j.tcs.2019.04.009.

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36

Barnetson, J., S. Phinn, P. Scarth, and R. Denham. "ASSESSING LANDSAT FRACTIONAL GROUND-COVER TIME SERIES ACROSS AUSTRALIA’S ARID RANGELANDS: SEPARATING GRAZING IMPACTS FROM CLIMATE VARIABILITY." ISPRS - International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences XLII-3/W2 (November 15, 2017): 15–26. http://dx.doi.org/10.5194/isprs-archives-xlii-3-w2-15-2017.

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Suitable measures of grazing impacts on ground cover, that enable separation of the effects of climatic variations, are needed to inform land managers and policy makers across the arid rangelands of Australia. This work developed and tested a time-series, changepoint detection method for application to time series of vegetation fractional cover derived from Landsat data to identify irregular and episodic ground-cover growth cycles. Utilising the High Performance Computing power of the Google Cloud Compute Engine these cycles were segmented to distinguish grazing impacts from that of climate variability. A measure of grazing impact was developed using a multivariate technique to quantify the rate and degree of ground cover change. The method was successful in detecting both long term and short term growth cycles. Growth cycle detection was assessed against rainfall surplus measures indicating a relationship with high rainfall periods. During periods of ground cover decline, grazing utilisation was observed across four major grasslands. Ground cover change associated with grazing impacts was also assessed against field measurements of ground cover indicating a relationship between both field and remotely sensed ground cover. Cause and effects between grazing practices and ground cover resilience can now be explored in isolation to climatic drivers. This is important to the long term balance between ground cover utilisation and overall landscape function and resilience.

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37

Quaas, J., O. Boucher, A. Jones, J. Kieser, and H. Joos. "Exploiting the weekly cycle as observed over Europe to analyse aerosol indirect effects in two climate models." Atmospheric Chemistry and Physics Discussions 9, no. 3 (May 5, 2009): 11269–85. http://dx.doi.org/10.5194/acpd-9-11269-2009.

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Abstract. A weekly cycle in aerosol pollution and meteorological quantities is observed over Europe. In the present study we exploit this effect to analyse aerosol-cloud-radiation interactions. A weekly cycle is imposed on anthropogenic emissions in two general circulation models that include parameterizations of aerosol cycles and cloud microphysics. It is found that the simulated weekly cycles in sulfur dioxide, sulfate, and aerosol optical depth in both models agree reasonably well with the observed ones indicating model skill in simulating the aerosol cycle. A distinct weekly cycle in cloud droplet number concentration is demonstrated in both observations and models. For other variables, such as cloud liquid water path, cloud cover, top-of-the-atmosphere radiation fluxes, precipitation, and surface temperature, large variability and contradictory results between observations, model simulations, and model control simulations without a weekly cycle in emissions prevent us from reaching any firm conclusions about the potential aerosol impact on meteorology or the realism of the modeled second aerosol indirect effects.

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Swestyani, Sondra, Yudi Rinanto, and Sri Widoretno. "PENINGKATAN KEMAMPUAN BERPIKIR LOGIS MELALUI PENERAPAN DISCOVERY LEARNING PADA MATERI SISTEM REPRODUKSIDI KELAS XI MIA 1 SMA BATIK 2 SURAKARTA TAHUN PELAJARAN 2014/2015." BIO-PEDAGOGI 5, no. 1 (April 1, 2016): 20. http://dx.doi.org/10.20961/bio-pedagogi.v5i1.5398.

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<p>This research was aimed to improve the students' logical thinking in XI MIA 1 of SMA Batik 2 Surakarta Academic Year 2014/2015 about reproduction system material through <em>discovery learning</em> application.This research was a class action research which consisted of three cycles. Each cycle contains planning, implementing, observing and reflecting. The research subject was the students in XI MIA 1 of SMA Batik 2 Surakarta Academic Year 2014/2015. The data source was from the mind map that cover the logical thinking aspects. Data collecting techniques of this research used observation, interview and documentation then data validation was using triangulation method. Data analyzing technique of this research was descriptive qualitative analysis which was done in three components, they are: data reduction, data presentation and drawing the conclusion or verification. The research’ procedure used spiral mode which is interdependent. The result of the research showed that the implementation of <em>discovery learning</em> improves the students’ logical thinking that covers aspects of knowledge, comunication, thinking, and application. The persentage of knowledge aspect was 53,23% in pre cycle, 81,04% in first cycle , 89,11%, in second cycle, and 95,16% in third cycle . The persentage of comunication aspect was 28,33% in pre cycle, 35,08% in first cycle, 67,74% in second cycle, and 71,77% in third cycle. The persentage of thinking aspect was 28,33% in pre cycle, 58,87% in first cycle, 49,19% in second cycle, and 73,39% in third cycle. Then the persentage of knowledge aspect was 41,53% in pre cycle, 72,18% in first cycle, 79,03% in second cycle, and 77,42% in third cycle. This research’s conclusion was the implementation of <em>discovery learning</em> can improve the students’ <em>logical thinking </em>in X MIA 1 of SMA Batik 2 Surakarta academic Year 2014/2015 about reproduction system material.</p><p> </p><p><strong>Keywords </strong>:discovery learning, logical thinking</p>

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39

Chernobrovchenko, Vadym, and Kostiantyn Dyadyura. "METHODOLOGY FOR ASSESSING THE LIFE CYCLE PROCESSES OF SCAFFOLDS." Measuring Equipment and Metrology 83, no. 2 (2022): 26–33. http://dx.doi.org/10.23939/istcmtm2022.02.026.

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Due to the increase in diseases in the musculoskeletal system, regenerative medicine is now developing various bone substitutes. Not all scaffolds, due to their shortcomings, are applied for every application. Patients should be provided with basic product information and other warnings about health risks or measures to be taken. From the establishment of the purpose of the biomaterial to apply, several stages of the life cycle can pass. To ensure the biocompatibility of medical devices, there is a legislative framework and standards. They cover the full cycle from testing to market authorization, surveillance, and recall (ISO 15225:2010, ISO/IEC 33001:2015). We have developed the life cycle of bone substitutes and can offer an approach to evaluate operations based on the requirements of the ISO/IEC 33001:2015 series.

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40

RANA, PRADUMNA B. "TRADE INTENSITY AND BUSINESS CYCLE SYNCHRONIZATION: THE CASE OF EAST ASIAN COUNTRIES." Singapore Economic Review 53, no. 02 (August 2008): 279–92. http://dx.doi.org/10.1142/s021759080800294x.

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This paper examines whether increasing trade intensities among East Asian countries have led to a synchronization of business cycles. It extends the work of Shin and Wang (2004) in two ways: by improving the specification of their business cycle correlation equation and by extending the sample to cover the post-crisis period. The study finds that intra-industry trade, rather than inter-industry trade, is the major factor in explaining business cycle co-movements in East Asia. This result has important implications for the prospects of introducing a single currency in the region.

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41

Ma, Hua, Xue Wei Zhang, Zhen Bao Li, Wen Jing Wang, Fang Liang Zhang, and Jing Fu. "Seismic Performance of Steel Beam-Column Joint under Low Cyclic Loading with Multiple Cycles." Applied Mechanics and Materials 353-356 (August 2013): 2069–72. http://dx.doi.org/10.4028/www.scientific.net/amm.353-356.2069.

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An experiment of three T-shape beam-column steel joints with intensive cover plate was conducted under low cyclic loading with different cycle numbers, to study seismic performance of the joints subjected to long-period ground motions. Effects of cycle number on mechanical performance and length of plastic hinge were analyzed. The results show that as the cycle number increases, capacity of the joint decreases, and plastic hinge of the joint develops longer which appears closer to the cover plate, and the platform of skeleton curve grows longer, and the stiffness attenuates slightly.

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Kitiashvili, Irina N. "Global evolution of solar magnetic fields and prediction of activity cycles." Proceedings of the International Astronomical Union 15, S354 (June 2019): 147–56. http://dx.doi.org/10.1017/s174392132000071x.

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AbstractPrediction of solar activity cycles is challenging because physical processes inside the Sun involve a broad range of multiscale dynamics that no model can reproduce and because the available observations are highly limited and cover mostly surface layers. Helioseismology makes it possible to probe solar dynamics in the convective zone, but variations in differential rotation and meridional circulation are currently available for only two solar activity cycles. It has been demonstrated that sunspot observations, which cover over 400 years, can be used to calibrate the Parker-Kleeorin-Ruzmaikin dynamo model, and that the Ensemble Kalman Filter (EnKF) method can be used to link the modeled magnetic fields to sunspot observations and make reliable predictions of a following activity cycle. However, for more accurate predictions, it is necessary to use actual observations of the solar magnetic fields, which are available only for the last four solar cycles. In this paper I briefly discuss the influence of the limited number of available observations on the accuracy of EnKF estimates of solar cycle parameters, the criteria to evaluate the predictions, and application of synoptic magnetograms to the prediction of solar activity.

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Rizzi, Romeo. "Cycle cover property and CPP=SCC property are not equivalent." Discrete Mathematics 259, no. 1-3 (December 2002): 337–42. http://dx.doi.org/10.1016/s0012-365x(02)00590-3.

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Yu, Wei, Zhaohui Liu, and Xiaoguang Bao. "New LP relaxations for Minimum Cycle/Path/Tree Cover Problems." Theoretical Computer Science 803 (January 2020): 71–81. http://dx.doi.org/10.1016/j.tcs.2019.05.041.

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Sunil Chandran, L., and L. Shankar Ram. "On the relationship between ATSP and the cycle cover problem." Theoretical Computer Science 370, no. 1-3 (February 2007): 218–28. http://dx.doi.org/10.1016/j.tcs.2006.10.026.

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Khachay, Michael, and Katherine Neznakhina. "Approximability of the minimum-weight k-size cycle cover problem." Journal of Global Optimization 66, no. 1 (December 18, 2015): 65–82. http://dx.doi.org/10.1007/s10898-015-0391-3.

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de Meijer, Frank, and Renata Sotirov. "The quadratic cycle cover problem: special cases and efficient bounds." Journal of Combinatorial Optimization 39, no. 4 (February 25, 2020): 1096–128. http://dx.doi.org/10.1007/s10878-020-00547-7.

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Chen, Guantao, Ronald J. Gould, Michael S. Jacobson, and Richard H. Schelp. "Neighborhood unions and the cycle cover number of a graph." Journal of Graph Theory 18, no. 7 (November 1994): 663–72. http://dx.doi.org/10.1002/jgt.3190180703.

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Amimah, Ani. "Meningkatkan Keaktifan dan Hasil Belajar Materi Himpunan melalui Model Pembelajaran Jigsaw Berbantuan Android." Idealmathedu: Indonesian Digital Journal of Mathematics and Education 6, no. 2 (December 7, 2019): 630–39. http://dx.doi.org/10.53717/idealmathedu.v6i2.33.

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This study aims to improve the activeness as well as mathematics learning achievement on sets topic through the Jigsaw learning model, grade VII B students of SMP Negeri 12 Semarang odd semester of 2018/2019 academic year. The research process consists of two cycles, in which each cycle covers for steps namely planning, action, observation and reflection. The research data were in the form of observation sheet notes, test results, and assignment results. The type of collected data is qualitative and quantitative data. Technique of data collection applies documentation, observation and analysis of learning results. Research instruments cover score list, notes of teaching and learning journal, and observation sheet. Data validation is done by involving observer and colleagues involved during the collaboration. Data analysis was performed using descriptive comparative technique by comparing pre, first and second cycle data. This step was then followed with critical analysis by conducting the reflection. Previously, the average knowledge score of grade VII B students on set topic was 55, while the average skill score was 56. Later on, after the jigsaw learning model was applied, average of the knowledge score increased to 65.6 at the first cycle, and 81.3 at the second cycle. Meanwhile the average of skill score was increased to 71.9 at the first cycle and 83.6 at the second cycle. These results indicate that there is an increase at the mathematics learning achievement for grade VII B students. In addition, students’ activities are increasingly optimal; they show quite positive responses towards teaching and learning activity.

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Carneiro, Magda Silva, Caroline Cambraia Furtado Campos, and Flavio Nunes Ramos. "Liana and bamboo cover threaten shrub populations in Atlantic forest fragments." Australian Journal of Botany 65, no. 4 (2017): 375. http://dx.doi.org/10.1071/bt16121.

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Abiotic and biotic changes caused by forest fragmentation have led to the decline of many plant species. We sought to investigate how biotic (liana and bamboo cover) and abiotic (soil moisture, litter depth, and canopy openness) factors affect the total abundance and the numbers of individuals of Psychotria vellosiana Benth. at each stage of its life cycle (seedlings, juvenile I and II, adult reproductive and vegetative) in a fragmented landscape. P. vellosiana was selected because it is a forest species, important for fauna, especially ants and birds in the understory, and is highly abundant in semideciduous Atlantic forest areas. We hypothesised that fragments with less humidity, greater litter depth, greater canopy openness, and more liana and bamboo cover would contain fewer individuals at all five life cycle stages of that species. Ten 0.01 ha plots were set up in semideciduous Atlantic Forest fragments, and all individuals of P. vellosiana were tagged and measured. The study also measured canopy openness, soil moisture, litter depth, and bamboo and liana cover. Our results indicated that there was a negative relationship between liana and bamboo cover at all stages of the life cycle of P. vellosiana. This is one of the few studies that has investigated environmental effects on all stages of the life cycle of a plant population, and demonstrates that liana and bamboo cover can affect all stages of plant growth and development. Despite some restrictions, we can affirm that forest species are threatened by fragmentation processes, and that the main threat to local populations of P. vellosiana is liana and bamboo cover.

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