Journal articles: 'Exogenous earth sciences'

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Oglinda, Ana, and Veronica Sava. "Acute exogenous poisonings in children." InterConf, no. 31(147) (March 20, 2023): 425–29. http://dx.doi.org/10.51582/interconf.19-20.03.2023.044.

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Acute poisoning is defined as a pathological condition, being a result of the accumulation of toxic substances in the body. Intoxication can be of exogenous and endogenous origin [1]. One of the main causes of pediatric emergency admissions, at the European level, are such acute intoxications with an estimate of 10-20%. Pediatric poisoning is a common emergency worldwide. Acute intoxications represent a major problem in pediatric practice because of their severity and the high frequency of illnesses. Due to the fact that many toxins are absorbed quickly, the evolution can be lethal and followed by serious consequences [2]. Routine surveillance is necessary for public health authorities and physicians to update strategies for the prevention and management of pediatric poisonings [3]. Studies based on the epidemiology of acute poisoning in children carried out by institutions such as: "National Clearing House for Poison Control Center from the USA", specify the fact that in the urban environment, drug poisoning occurs more often, poisoning caused by the ingestion of detergents and cosmetic products. While in the rural environment, the most frequent are poisonings with pesticides, insecticides, plants [4]. In the USA, in 2021, on average, there were 6.4 acute poisonings/1000 people, and among children up to 6 years old – 37.9/1000 children. In this way, during the year, on average, one case of intoxication was reported every 15 seconds [5]. Annually, 1.2 million cases of poisoning are registered in children under the age of 5.

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Okovitiy, S. V., and E. B. Shustov. "Exogenous RNAs as Potential Pharmacological Agents." Journal Biomed 18, no. 3 (October 18, 2022): 118–21. http://dx.doi.org/10.33647/2074-5982-18-3-118-121.

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Exogenous RNAs alter interspecifically the transmission of signals in organisms by regulating the expression of their genes. This process leads to phenotypic cellular changes, thus representing a possible new tactic for the treatment of various diseases. Exogenous RNAs are a promising approach to the creation of a fundamentally new class of drugs or biologically active additives (for plant exogenous RNAs) with a promising pharmacological activity and minimal side effects.

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Zamulin, O. A., and K. I. Sonin. "Economic growth: Nobel prize in economic sciences 2018 and the lessons for Russia." Voprosy Ekonomiki, no. 1 (January 15, 2019): 11–36. http://dx.doi.org/10.32609/0042-8736-2019-1-11-36.

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The article discusses the evolution of the theory of long-run economic growth and the contribution of the 2018 Nobel prize winners Paul Romer and William Nordhaus. First, it describes the exogenous growth theory of the 1950s and 1960s, such as the Solow model, the Ramsey model, and the overlapping generations model, in which growth is determined by exogenously given technological progress. Then the paper turns to the contribution of the Nobel laureates, who were the first ones to develop the theory of endogenous growth. In the case of the Romer model, technological progress is the result of intentional actions of firms, which introduce new products and thereby raise the overall productivity. In case of the Nordhaus model, production causes environmental damage, which then stifles further growth. In both cases production causes externalities, which have either positive or negative effect on growth. Then, the article considers further developments in the theory of economic growth, such as the Schumpeterian theory , unified growth theory, and institutional theory. The paper concludes with some practical implications about policies needed to reignite the growth of the Russian economy.

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Kachakhidze, M. K., R. Kiladze, N. Kachakhidze, V. Kukhianidze, and G. Ramishvili. "Connection of large earthquakes occurring moment with the movement of the Sun and the Moon and with the Earth crust tectonic stress character." Natural Hazards and Earth System Sciences 10, no. 7 (July 29, 2010): 1629–33. http://dx.doi.org/10.5194/nhess-10-1629-2010.

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Abstract. It is acceptable that earthquakes certain exogenous (cosmic) triggering factors may exist in every seismoactive (s/a) region and in Caucasus among them. They have to correct earthquake occurring moment or play the triggering role in case when the region is at the limit of the critical value of the geological medium of course. Our aim is to reveal some exogenous factors possible to initiate earthquakes, on example of Caucasus s/a region, taking into account that the region is very complex by the point of view of the tectonic stress distribution. The compression stress directed from North to South (and vice versa) and the spread stress directed from East to West (and vice versa) are the main stresses acted in Caucasus region. No doubt that action of the smallest external stress may "work" as earthquakes triggering factor. In the presented work the Moon and the Sun perturbations are revealed as initiative agents of earthquakes when the directions of corresponding exogenous forces coincide with the directions of the compression stress or the spreading tectonic stress in the region.

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Sene, Ndolane, and Gautam Srivastava. "Generalized Mittag-Leffler Input Stability of the Fractional Differential Equations." Symmetry 11, no. 5 (May 1, 2019): 608. http://dx.doi.org/10.3390/sym11050608.

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The behavior of the analytical solutions of the fractional differential equation described by the fractional order derivative operators is the main subject in many stability problems. In this paper, we present a new stability notion of the fractional differential equations with exogenous input. Motivated by the success of the applications of the Mittag-Leffler functions in many areas of science and engineering, we present our work here. Applications of Mittag-Leffler functions in certain areas of physical and applied sciences are also very common. During the last two decades, this class of functions has come into prominence after about nine decades of its discovery by a Swedish Mathematician Mittag-Leffler, due to the vast potential of its applications in solving the problems of physical, biological, engineering, and earth sciences, to name just a few. Moreover, we propose the generalized Mittag-Leffler input stability conditions. The left generalized fractional differential equation has been used to help create this new notion. We investigate in depth here the Lyapunov characterizations of the generalized Mittag-Leffler input stability of the fractional differential equation with input.

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Gasnier, Nicolas, Loic Denis, Roger Fjortoft, Frederic Liege, and Florence Tupin. "Narrow River Extraction From SAR Images Using Exogenous Information." IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing 14 (2021): 5720–34. http://dx.doi.org/10.1109/jstars.2021.3083413.

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Petrović, Aleksandra. "The exogenous characteristics of traffic delinquents." Pravo - teorija i praksa 38, no. 4 (2021): 115–27. http://dx.doi.org/10.5937/ptp2104115p.

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The exogenous characteristics of traffic participants, such as: alcoholism, fatigue and psychoactive substances, have a significant impact on a safe behaviour in traffic, especially the motor vehicle drivers. In that sense, they represent the factors that can directly influence the unsafe behaviour in traffic. The influence of the exogenous characteristics on a safe behaviour of traffic participants has been analysed on the basis of the statements in documents as well as the results of numerous empirical studies. For the purposes of this paper, there have been selected and analysed the statistical data on the influential factors of traffic accidents for the period from 2010 to 2019 in Republic of Serbia. After reviewing the statistical data, both a qualitative and quantitative content analyses were performed. In addition to the statistical method, there were also used the content analysis methods, empirical method, descriptive method, comparative methods, as well as deduction and induction methods, in order to analyse the trend and presence of these influential factors of traffic accidents in Republic of Serbia. The statistical data being processed in this paper, originated from the database of the Traffic Safety Agency of Republic of Serbia. The results of the research show the extent to which the exogenous characteristics affect a safe behaviour of traffic participants, as well as the severity of the consequences of traffic accidents. Observed individually, the listed characteristics have a different intensity of influence on a safe behaviour in traffic. In this regard, from the external characteristics of traffic delinquents, the most common is the drunk driving as an influential factor, which especially affects the severity of traffic accidents in Republic of Serbia.

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Kim, Doyoon, and Dongyoub Shin. "Environmental Dynamism and Search Distance: Technology Search Efforts of Korean High-tech Electronics Firms." Korean Academy of Management 30, no. 4 (November 30, 2022): 1–31. http://dx.doi.org/10.26856/kjom.2022.30.4.1.

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In this paper, we explored the market and environmental factors that may drive an organization’s technology search efforts through patent applications under dynamic environments. Unlike previous studies which have mainly focused on the consequences of exploration and exploitation, this study draws attention to a more contextual perspective, as the antecedents of exploration and exploitation, to explain and to elaborate on organizational adaptation – i.e. exploration and exploitation. This study empirically investigated factors affecting organizations’ strategic choices for carrying out a distant search rather than a local search or factors driving a local search rather than a distant search. We hypothesized that different market and environmental factors, such as exogenous shock, volatility, and complexity, may also induce greater organizational search distance. First, this study explored exogenous shock affecting organizational adaptation not only exogenously but also endogenously. Next, the effect of market volatility has been examined for whether it suppresses organizational change. Last, environmental complexity has been established through organizations’ surroundings and an investigation was done for suspected effects on organizational decision-making. The results of our analysis of technology search processes in the Korean high-tech electronics industry from 1994 to 2008 showed that these three environmental factors affected the search distance when they explored new technology domains, as predicted in our hypotheses. General implications on organizational search processes for researchers and practitioners are discussed.

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R Bhuyan, Rashmi, and Kumkum Vadera. "Vaping Induced Pathological Changes in the Lung-A Case Report Study." Cancer Research and Cellular Therapeutics 4, no. 1 (August 7, 2020): 01–04. http://dx.doi.org/10.31579/2640-1053/103.

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Vaping associated pulmonary injury (VAPI), a group of respiratory symptoms, sometimes accompanied by non-specific symptoms like generalized fatigue, body ache, fever, nausea, diarrhea, vomiting and chills that has been previously categorized as a diagnosis of exclusion and best described as an exogenous lipoid pneumonia, or chemical pneumonitis. Here we describe the onset of an exogenous cause of lipoid pneumonia in an otherwise healthy patient using cannabis-containing products. We explore, similarities in the clinical case, identify common clinical features, characteristic radiologic findings along with cytological changes in the lungs.

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Cerutti, Nicola, and Achim Schlüter. "Resource changes: exogenous or endogenous, gradual or abrupt. Experimental evidence." International Journal of Environmental Studies 76, no. 6 (July 26, 2019): 1004–18. http://dx.doi.org/10.1080/00207233.2019.1644022.

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Zhang, X. X., P. Song, S. S. Stahara, J. R. Spreiter, C. T. Russell, and G. Le. "Large scale structures in the magnetosheath: Exogenous or endogenous in origin?" Geophysical Research Letters 23, no. 1 (January 1, 1996): 105–8. http://dx.doi.org/10.1029/95gl03503.

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Melchert, Jan Olaf, Alexander Stolz, Alfred Dewald, Merle Gierga, Philipp Wischhöfer, and Janet Rethemeyer. "Exploring sample size limits of AMS gas Ion Source 14C analysis at Cologneams." Radiocarbon 61, no. 6 (December 2019): 1785–93. http://dx.doi.org/10.1017/rdc.2019.143.

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ABSTRACTIncreasing demands for small-scale radiocarbon (14C) analyses required the installation of a “SO-110 B” type ion source (HVE Europa B.V.) at our 6 MV Tandetron AMS (HVE) dedicated for the direct injection of CO2 using either the gas injection system (GIS) from Ionplus AG or a EuroVector EA 3000 elemental analyzer (EA). We tested both systems with multiple series of 14C-free and modern standards (2.5–50 µg C) combusted in quartz ampoules or EA containers and were able to quantify exogenous C introduced. In EA-GIS-AMS analysis exogenous C is mainly derived from the EA sample containers. Blank values for 50 µg C combusted in solvent-cleaned tin (Sn) vessels were 0.0127 ± 0.0012 F14C (boats) and 0.0090 ± 0.0010 F14C (capsules), while they were much higher for thermally cleaned silver (Ag) capsules. The processing of gas samples for GIS-AMS yields similar blank values corresponding to 0.30 ± 0.08 µg exogenous C with 0.93 ± 0.23 F14C consisting of 0.28 µg C modern and 0.02 µg C fossil C. The combustion of larger amounts of blank material (1 mg C) in a single quartz tube split into aliquots gives lower blanks (0.0064 ± 0.0008 F14C; 50 µg C). Thus, 14C analysis of small, gaseous samples is now possible at CologneAMS.

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Gelman, Vladimir. "BAD GOVERNANCE UNDER EXOGENOUS SHOCK: THE CASE OF COVID-19 PANDEMIC." Political Science (RU), no. 2 (2021): 34–52. http://dx.doi.org/10.31249/poln/2022.02.02.

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Although COVID-19 pandemic is far from its ending, and it is too early to draw even tentative conclusions regarding its effects, judging by excessive mortality of Russian citizens, one may argue that Russia responded to pandemic much worse than most of developed countries - by the end of 2021, the number of victims exceeded 1 million persons. This outcome resulted from numerous factors, including insufficient funding of public health and ineffectiveness of health policy in Russia during the entire post-Soviet period. However, pernicious effects of bad governance - a politico-economic order, which is aimed at rent-seeking as the major goal of governing Russia - played a major role in devastating outcomes of pandemic. Bad governance contributed to a poor quality of governance in Russia, according to evaluations of several international agencies. It emerged and consolidated in Russia in the early twenty-first century due to many actions of political leadership. Against this background, the pandemic became an exogenous shock, which aggravated numerous previous vices of bad governance in Russia. The article is focused on the impact of mechanisms of governing the Russian state, their incentives for various actors, and effects of political and policy decisions of Russian authorities from the viewpoint of consequences of pandemic for Russia and its citizens.

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Khalifa, S., and S. Khalaf. "EFFECT OF EXOGENOUS FIBROLYTIC ENZYMES ON PERFORMANCE OF LOCAL MALE GOATS." ANBAR JOURNAL OF AGRICULTURAL SCIENCES 19, no. 1 (June 30, 2021): 96–105. http://dx.doi.org/10.32649/ajas.2021.176226.

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15

Minkner, Mikołaj, Piotr Petryla, Kamil Ostafin, Krzysztof Edyko, Zuzanna Suwała, Krzysztof Feja, Borys Bieńkowski, Urszula Marchewka, Ewa Łuczak, and Natalia Rektor. "Creatine and the plurality of its uses, with emphasis on its supplementation in sports." Journal of Education, Health and Sport 46, no. 1 (August 25, 2023): 110–21. http://dx.doi.org/10.12775/jehs.2023.46.01.007.

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Introduction: Creatine is a non-protein amino acid that is synthesized endogenously mainly in the liver, kidney or pancreas, and also supplied exogenously with food, especially meat. The use of dietary supplements containing creatine is becoming increasingly popular, as evidenced by sales of $400 million per year.Aim of the study: The aim of our study was to evaluate the potential applications of exogenous creatine with a particular focus on its use in sport. State of Knowledge: Regular use of creatine contributes to water retention in the body as well as muscle hypertrophy. This leads to improved athletic performance, faster recovery as well as a shorter recovery period after injury. The potential use of creatine as an aid in the treatment of depression seems extremely interesting, but these reports require further research. Conclusion: Creatine is currently one of the most popular dietary supplements. Not only is it widely used in sport, where it shows a number of benefits, but research is also underway into its use in medicine.

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Hamid, Abidin Bin, and John E. Smith. "Effect of exogenous lipids on growth and aflatoxin production by Aspergillus flavus." Transactions of the British Mycological Society 89, no. 3 (October 1987): 384–87. http://dx.doi.org/10.1016/s0007-1536(87)80123-7.

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George, Babu. "Mega Universities, Nanodegrees, and the Digital Disruption in Higher Education." Journal of Risk and Financial Management 15, no. 11 (October 26, 2022): 496. http://dx.doi.org/10.3390/jrfm15110496.

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Traditional universities are facing a huge threat from exogenous innovators who have perfected the idea of conceiving and developing various kinds of micro-credentials that are stackable, reconfigurable, and storable in the blockchains (Khatun et al [...]

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Barret, Michel. "Lossy and lossless compression of MERIS hyperspectral images with exogenous quasi-optimal spectral transforms." Journal of Applied Remote Sensing 4, no. 1 (July 1, 2010): 041790. http://dx.doi.org/10.1117/1.3474980.

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Bekker, Matthew F., and George P. Malanson. "Linear forest patterns in subalpine environments." Progress in Physical Geography: Earth and Environment 32, no. 6 (December 2008): 635–53. http://dx.doi.org/10.1177/0309133308101384.

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Studies of feedback between ecological pattern and process can benefit from the analysis of visually striking patterns, as they may reveal underlying processes and clarify the relative role of exogenous versus endogenous factors in driving vegetation change. Roughly linear forest patches are common in subalpine environments, including `hedges', `ribbon forest', and `Shimagare' or `wave regenerated forests' (waves). The influence of wind is common among these patterns, but the role of positive feedback, the most important component of self-organization in biological systems, varies. Hedges are orientated parallel to prevailing winds in several mid-latitude mountain ranges worldwide. Desiccation and ice-particle abrasion kills windward foliage while the vegetation shelters leeward seedlings and growth, so that the patches migrate slowly across the slope. Ribbon forest consists of strips orientated perpendicular to prevailing winds. They have been examined only in the US Rocky Mountains and are the least studied and understood of these phenomena. There are at least three distinct types of ribbon forest, which appear to develop in different ways. Waves are migrating strips of mortality and regeneration orientated perpendicular to prevailing winds in the USA, Japan and Argentina, and dominant controls vary by site. Hedges and waves can develop endogenously with a constant wind, and so can be considered self-organizing in the sense that feedback at the scale of individual trees creates a pattern across the scale of many trees without exogenous forcing. Most ribbon forests seem to be dominated by exogenous forces, but more work is needed to fully characterize the different types.

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Whyte, J. M., A. Plumridge, and A. V. Metcalfe. "Comparison of predictions of rainfall-runoff models for changes in rainfall in the Murray-Darling Basin." Hydrology and Earth System Sciences Discussions 8, no. 1 (January 24, 2011): 917–55. http://dx.doi.org/10.5194/hessd-8-917-2011.

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Abstract. Management of water resources requires an appreciation for how climate change, in particular changes in rainfall, affects the volume of water available in runoff. While there are many studies that use hydrological models for this purpose, comparisons of predictions appear much less commonly in the literature. This paper aims to contribute to this discussion by proposing methods for evaluating the effect on daily runoff projections of rainfall-runoff models when historical daily rainfall inputs are scaled by factors that increase and decrease the rainfall. Considered are the widely used lumped conceptual model SIMHYD and a selection of time series models which feature lagged runoff and rainfall terms. In particular these are AutoRegressive with eXogenous input (ARX), a variant containing nonlinear autoregressive runoff terms (NARX), a model for the log transform of runoff, a finite impulse response model (FIR) and a two regime threshold autoregressive model with exogenous input (TARX). Results show that SIMHYD and the single regime time series models considered have very different behaviour under scaled input rainfall. Reasons for the discrepancy are discussed. The amplification of the rainfall change observed for SIMHYD is consistent with claims that a 1% change in rainfall leads to a 2–3% change in runoff in the Murray-Darling Basin.

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Viktorov, Alexey. "Risk Assessment based on the Mathematical Model of Diffuse Exogenous Geological Processes." Mathematical Geology 39, no. 8 (October 5, 2007): 735–48. http://dx.doi.org/10.1007/s11004-007-9122-8.

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Sene, Eduardo Ribeiro, Ana Beatriz Ribeiro Mascarenhas, Maria Karolline Peres Macedo, Nicole Gomes Neves, Tharleton Ribeiro de Souza, and Lara Cândida de Souza Machado. "Intoxicação exógena no estado de Goiás / Exogenous intoxications in the state of Goiás." Brazilian Journal of Health Review 4, no. 6 (November 21, 2021): 25854–66. http://dx.doi.org/10.34119/bjhrv4n6-181.

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Varnalii, Z., and А. Mehed. "THREATS TO FINANCIAL SECURITY OF BUSINESS ENTITIES AND WAYS TO PREVENT THEM." Bulletin of Taras Shevchenko National University of Kyiv. Economics, no. 221 (2022): 13–18. http://dx.doi.org/10.17721/1728-2667.2022/221-4/2.

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Enterprises are forced to conduct business in the turbulent exogenous and endogenous environment. This poses threats to financial security at the microlevel, both of cyclical and non-cyclical origin. The paper aims to identify threats to Ukrainian enterprises’ financial security and propose directions for minimizing financial security threats on the micro-level. The paper considers a set of actors of exogenous and endogenous environments that affect the state of financial security at the micro-level. Analysis of groups of stakeholders in the context of financial security is carried out. It is emphasized that changes in the enterprises’ financial security have consequences at both micro- and macro-level. The key drivers of financial and market nature that affect financial security are considered. The exogenous and endogenous environment influences were considered as set of factors of economic, demographic, socio-cultural, legal, and organizational nature. The paper studies a set of micro-level quantitative and qualitative indicators that affect financial security. The importance of accounting for industry and enterprise-specific characteristics in financial security analysis is emphasized. Analysis of financial security through the prism of Ukraine’s real sector finance is carried out. It is highlighted that there are issues of the declining weight of stable financing sources, as well as an issue of a lesser focus on non-current assets in the context of deteriorating financial security. The importance of combining short- and long-term measures of both financial and market nature under the framework of financial security is emphasized. An algorithm for analyzing the state of an enterprise’s financial security is proposed. A set of short- and mediumterm time horizon measures has been formed to maintain adequate financial security at the micro-level. It is suggested to include a key indicator of financial security into them as of strategic goals, i.e., Balanced Scorecard, for economic turbulence period usage.

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Zhang, Minbo, Zhen Zhang, Dangyu Zhang, Delong Zou, Jinlei Du, Zichao Wang, and Chunxin Li. "Study on Pore and Fissure Structure Characteristics of Deep Soft Coal Rock." Geofluids 2021 (August 30, 2021): 1–13. http://dx.doi.org/10.1155/2021/1475926.

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The microscopic pore and fissure structure is the key factor affecting the exploitation, storage, and migration of coalbed methane and coal spontaneous combustion tendency. For further research of the microstructure of deep soft coal rock, such as pores and fissures, the coal samples from the Yangdong mining area were qualitatively and quantitatively analyzed in terms of morphological characteristics, pore shape, pore specific surface area, pore volume, and pore diameter by a scanning electron microscope (SEM) and a low-temperature liquid nitrogen adsorption experiment. The results show that there are three major categories and five minor categories of pores with different genetic types, including metamorphic pore, exogenous pore, and mineral pore, and there are endogenous fissures, exogenous tensile fissures, and exogenous shear fissures developed in the coal body. According to the results of the low-temperature liquid nitrogen adsorption experiment, the hysteresis curves of coal samples can be divided into two types. The I type curve produces a loop. There is a “hysteresis loop” which is obvious, and there is an inflection point that is not obvious. The pore system is mainly composed of open pores. The II type curve has no adsorption back line and no obvious inflection point. The pore structure is mainly composed of an impermeable hole closed at one end. The BET specific surface area of coal samples ranges from 0.2810 to 4.7569 m2/g, with an average of 1.27984 m2/g. The BJH pore volume ranges from 0.002864 to 0.007377 cm3/g, with an average of 0.0041246 cm3/g. The average BJH pore diameter of coal samples ranges from 4.3935 to 20.1501 nm, with an average of 16.0313 nm. The pore specific surface area of coal is mainly contributed by micropores, and the transition pores contribute the most to pore volume. The distribution of pore volume in each pore section of a coal sample has the rule that the transition pore is larger than the micropore, and the micropore is larger than the mesopore, and the maximum ratio is 66.2%. The distribution of pore specific surface area has the rule that the micropore is larger than the transition pore, and the transition pore is larger than the mesopore. The maximum ratio is 91.2%.

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Siswanto, Yulias Primita, Muhammad Firdaus, and Supardi Supardi. "Pengaruh Kualitas Siakad Terhadap Kepuasan Mahasiswa Dengan Perceived Usefulness Sebagai Variabel Intervening." RELASI : JURNAL EKONOMI 17, no. 1 (January 29, 2021): 225–43. http://dx.doi.org/10.31967/relasi.v17i1.419.

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The purpose of this research is to measure and test the variables and indicators that influence the success of academic information system (SIAKAD) in universities with STIE Mandala Jember as a case study. Adopting Delone & Mclean IS Success research model, a set of structured questionnaires were distributed to 100 respondents. Exogenous variables include System Quality, Information Quality, Service Quality, and endogenous variables Student Satisfaction. Perceived usefulness variable used as a intervening variable proved it could mediate the quality of information, the quality of system and the quality of services to user satisfaction. Path analysis is employed as analitical technic. The result shows that there is a significant effect on the quality of the system, quality of the information, the quality of the services to the students’ satisfaction. Perceived usefulness variable, can mediate between exogenous variables to endogenous variables. This conclusion support the prediction of many previous researches.This indicates that the model used is not proper because the model is built on the construct of implementation of academic information system onstudents’ satisfaction. Keywords: System Quality, Information Quality, Service Quality, and Perceived Usefulness.

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Bounemeur, Abdelhamid, Mohamed Chemachema, and Salah Bouzina. "Fuzzy Fault-Tolerant Control Applied on Two Inverted Pendulums with Nonaffine Nonlinear Actuator Failures." International Journal of Robotics and Control Systems 3, no. 2 (March 15, 2023): 144–60. http://dx.doi.org/10.31763/ijrcs.v3i2.917.

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This paper deals with the problem of fault-tolerant control for a class of perturbed nonlinear systems with nonlinear non-affine actuator faults. Fuzzy systems are integrated into the design of the control law to get rid of the system nonlinearities and the considered actuator faults. Two adaptive controllers are proposed in order to reach the control objective and ensure stability. The first term is an adaptive controller involved to mollify the system uncertainties and the considered actuator faults. Therefore, the second term is known as a robust controller introduced for the purpose of dealing with approximation errors and exogenous disturbances. In general, the designed controller allows to deal automatically with the exogenous disturbances and actuator faults with the help of an online adaption protocol. A Butterworth low-pass filter is utilized to avoid the algebraic loop issue and allows a reliable approximation of the ideal control law. A stability study is performed based on Lyapunov's theory. Two inverted pendulum example is carried out to prove the accuracy of the controller.

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Dodin, Maxence, Hunter D. Smith, Florent Levavasseur, Dalila Hadjar, Sabine Houot, and Emmanuelle Vaudour. "Potential of Sentinel-2 Satellite Images for Monitoring Green Waste Compost and Manure Amendments in Temperate Cropland." Remote Sensing 13, no. 9 (April 21, 2021): 1616. http://dx.doi.org/10.3390/rs13091616.

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Increasing attention has been placed on the agroecological impact of applying exogenous organic matter (EOM) amendments, such as green waste compost (GWC) and livestock manure, to agricultural landscapes. However, monitoring the frequency and locality of this practice poses a major challenge, as these events are typically unreported. The purpose of this study is to evaluate the utility of Sentinel-2 imagery for the detection of EOM amendments. Specifically, we investigated the spectral shift resulting from GWC and manure application at two spatial scales, satellite and proximal. At the satellite scale, multispectral Sentinel-2 image pairs were analyzed before and after EOM application to six cultivated fields in the Versailles Plain, France. At the proximal scale, multi-temporal spectral field measurements were taken of experimental plots consisting of 14 total treatments: EOM variety, amendment quantity (15, 30 and 60 t.ha−1) and tillage. The Sentinel-2 images showed significant spectral differences before and after EOM application. Exogenous Organic Matter Indices (EOMI) were developed and analyzed for separative performance. The best performing index was EOMI2, using the B4 and B12 Sentinel-2 spectral bands. At the proximal scale, simulated Sentinel-2 reflectance spectra, which were created using field measurements, successfully monitored all EOM treatments for three days, except for the buried green waste compost at a rate of 15 t.ha−1.

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Li, Min, Mingfeng Zhang, Runxiang Cao, Yidi Sun, and Xiyuan Deng. "Hydrological drought forecasting under a changing environment in the Luanhe River basin." Natural Hazards and Earth System Sciences 23, no. 4 (April 20, 2023): 1453–64. http://dx.doi.org/10.5194/nhess-23-1453-2023.

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Abstract. Forecasting the occurrence of hydrological drought according to a forecasting system is an important disaster reduction strategy. In this paper, a new drought prediction model adapted to changing environments was constructed. Taking the Luanhe River basin in China as an example, first, nonstationarity analysis of hydrological sequences in the basin was carried out. Then, conditional distribution models with the human activity factor as an exogenous variable were constructed to forecast hydrological drought based on meteorological drought, and the results were compared with the traditional normal distribution model and conditional distribution model. Finally, a scoring mechanism was applied to evaluate the performance of the three drought forecasting models. The results showed that the runoff series of the Luanhe River basin from 1961 to 2010 were nonstationary; moreover, when human activities were not considered, the hydrological drought class tended to be the same as the meteorological drought class. The calculation results of the models involving HI as an exogenous variable were significantly different from the models that did not consider human activities. When the current drought class tended towards less severe or normal, the meteorological drought tended to turn into more severe hydrological drought with the increase in human index values. According to the scores of the three drought forecasting models, the conditional distribution models involving the human index can further improve the forecasting accuracy of drought in the Luanhe River basin.

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Hryhoriev, Hennadiy. "Sovereign debt in a post-war period: endogenous opportunities and exogenous challenges for Ukraine." Scientific Papers NaUKMA. Economics 7, no. 1 (December 5, 2022): 35–40. http://dx.doi.org/10.18523/2519-4739.2022.7.1.35-40.

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The purpose of this study is to present possible scenarios for assessing the levels of Ukraine’s sovereign debt burden in the context of the cumulative effect of Ukraine’s pre-war and post-war debt accumulation to avoid sovereign debt overload or even sovereign default and achieve debt relief.The methodology of the article is based on the theory of international finance using the scientific method of system dynamics as an applied method of analysis. The main purpose of the article was to find the way out of the concession debt trap, but the Russian military aggression against Ukraine in February 2022 significantly changed the purpose of the analysis. As a result, as far as possible, an element of military economics was added to the article.The dynamic interpretation of the research problem is formulated as: “What are the possible dynamics of falling into a sovereign debt trap and, ultimately, into political dependence through external infrastructure financing before and after the war, and how can such a trap be avoided?” It is necessary to recognize such a trap in advance, because, fortunately, Ukraine has not yet fully got there.The results of the study are important in the application of the national debt policy model. JEL classіfіcatіon: C73, E17, H56, H60, H81

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Tompa, NH, M. Mohi Uddin, MS Biswas, and TK Ghosh. "Exogenous Sodium Chloride Explores the Mechanisms For Hyperosmotic Stress Acclimation in Liverwort Marchantia Polymorpha." Annals of Bangladesh Agriculture 26, no. 2 (August 30, 2023): 1–18. http://dx.doi.org/10.3329/aba.v26i2.67863.

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In contrast to angiosperms, the mechanisms of hyperosmotic stress responses in liverworts, the evolutionarily important land plants remain more or less elusive. The present investigation was set with liverwort, Marchantia polymorpha to find out the approaches essential for hyperosmotic stress acclimation in distant land plants. The gemmae of M. polymorpha cultured in ½ B5 medium were subjected to control (0 mM NaCl) and osmotic stressed conditions led by 50 mM and 100 mM NaCl to find their morphological, biological and physiological responses. Compared to non-stress control, the thallus body of M. polymorpha showed strong growth inhibition while acclimating to hyperosmotic stress led by 100 mM NaCl. The significant reduction of chlorophyll content and tissue damage were recorded by hyperosmotic stress led by 100 mM NaCl compared to control. The negligible tissue damage and more or less similar chlorophyll content were recorded in control and by 50 mM NaCl. Further, the gemmalings showed enhanced accumulation of osmolytes proline and soluble sugar by 100 mM NaCl compared to the control which was consistent with the increased accumulation of soluble sugar by hyperosmotic stress led by 0.2 M sucrose. Hyperosmotic stress led by 100 mM NaCl showed a higher rate of electrolyte leakage in the gemmalings which was consistent with the higher amount of lipid peroxidation; malondialdehyde and hydrogen peroxide in the gemmalings treated with 100 mM NaCl compared to the control. However, the activity of enzymatic antioxidants such as superoxide dismutase; catalase; ascorbate peroxidase; dehydroascorbate reductase and glutathione S-transferase were greatly induced by 100 mM NaCl as compared to control. Therefore, the findings suggest that the basal land plants liverworts followed morpho-physiological alterations during acclimation to hyperosmotic stress which were crucial for the terrestrialization of land plants. Ann. Bangladesh Agric. (2022) 26 (2) : 1-18

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Gomaa Ali Abd Al-Jawad, Mohammad, Fawzi Ahmed Abd El-Aziz, and Wael Soliman Taha. "Effects of Exogenous Progesterone on Fetal Nuchal Translucency Measured By 2d Ultrasonography." Al-Azhar Medical Journal 50, no. 3 (July 1, 2021): 1761–70. http://dx.doi.org/10.21608/amj.2021.178267.

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Polbin, A. "Econometric estimation of the impact of oil prices shock on the Russian economy in VECM model." Voprosy Ekonomiki, no. 10 (October 20, 2017): 27–49. http://dx.doi.org/10.32609/0042-8736-2017-10-27-49.

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The paper estimates terms of trade shock influence on the Russian output, gross investment and consumption using VECM model with exogenous variables. As a proxy for terms of trade we use oil prices. Empirical results demonstrate that a permanent oil price increase led to a short-run economic boom followed by a negative contribution to economic growth.

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Wood, Rachel, Andre Barros Curado Fleury, Stewart Fallon, Thi Mai Huong Nguyen, and Anh Tuan Nguyen. "DO WEAK OR STRONG ACIDS REMOVE CARBONATE CONTAMINATION FROM ANCIENT TOOTH ENAMEL MORE EFFECTIVELY? THE EFFECT OF ACID PRETREATMENT ON RADIOCARBON AND δ13C ANALYSES." Radiocarbon 63, no. 3 (May 13, 2021): 935–52. http://dx.doi.org/10.1017/rdc.2021.32.

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ABSTRACTIn hot environments, collagen, which is normally targeted when radiocarbon (14C) dating bone, rapidly degrades. With little other skeletal material suitable for 14C dating, it can be impossible to obtain dates directly on skeletal materials. A small amount of carbonate occurs in hydroxyapatite, the mineral phase of bone and tooth enamel, and has been used as an alternative to collagen. Unfortunately, the mineral phase is often heavily contaminated with exogenous carbonate causing 14C dates to underestimate the true age of a sample. Although tooth enamel, with its larger, more stable crystals and lower porosity, is likely to be more robust to diagenesis than bone, little work has been undertaken to investigate how exogenous carbonate can be effectively removed prior to 14C dating. Typically, acid is used to dissolve calcite and etch the surface of the enamel, but it is unclear which acid is most effective. This study repeats and extends earlier work using a wider range of samples and acids and chelating agents (hydrochloric, lactic, acetic and propionic acids, and EDTA). We find that weaker acids remove carbonate contaminants more effectively than stronger acids, and acetic acid is the most effective. However, accurate dates cannot always be obtained.

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Rahman, MA, M. Zakaria, MAB Mia, and MS Biswas. "Ascorbic Acid Influences on Growth and Yield of Tomato." Annals of Bangladesh Agriculture 25, no. 1 (March 21, 2022): 55–65. http://dx.doi.org/10.3329/aba.v25i1.58155.

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Reactive oxygen species (ROS) generated in various metabolic reactions in plants are mostly known for toxicity. Whereas ascorbic acid (AsA) involves in various physiological and biochemical processes; and acts as a ROS scavenger. Therefore, the experiment was conducted to investigate the effects of exogenous application of AsA on growth and yield of tomato plants. The ROS scavenger AsA was applied in the leaves of tomato plants in four treatment combinations (T1-Control; T2-0.5 mM; T3-2.0 mM and T4-4.0 mM) with three replications. Among the treatments, AsA at 4.0 mM (T4) efficiently increased leaf length (12%), inflorescence length (17%), and flower number (29%) than the untreated control plants. AsA at 0.5 and 2.0 mM also showed positive effects on the plant morphology to a lesser extent. Importantly, AsA at 4.0 mM increased yield by 18% than the control treatment. In physiochemical parameters, AsA at 4.0 mM (T4) was retained 64.07% higher chlorophyll content than the control plant even after 60 days of application. Exogenous application of AsA effectively reduced oxidative stress of the plant, which was attributed to the less accumulation of H2O2 and lipid peroxidation of membrane lipids. AsA at 4.0 mM decreased H2O2 and MDA accumulation by 39% and 45%, respectively, compared with the control plants. Therefore, exogenous application of AsA is a useful tool to enhance growth and yield of tomato under field conditions by lowering the accumulation of ROS and lipid peroxidation. Ann. Bangladesh Agric. (2021) 25 (1) : 55-65

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Boynton, R. J., M. A. Balikhin, S. A. Billings, and O. A. Amariutei. "Application of nonlinear autoregressive moving average exogenous input models to geospace: advances in understanding and space weather forecasts." Annales Geophysicae 31, no. 9 (September 26, 2013): 1579–89. http://dx.doi.org/10.5194/angeo-31-1579-2013.

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Abstract. The nonlinear autoregressive moving average with exogenous inputs (NARMAX) system identification technique is applied to various aspects of the magnetospheres dynamics. It is shown, from an example system, how the inputs to a system can be found from the error reduction ratio (ERR) analysis, a key concept of the NARMAX approach. The application of the NARMAX approach to the Dst (disturbance storm time) index and the electron fluxes at geostationary Earth orbit (GEO) are reviewed, revealing new insight into the physics of the system. The review of studies into the Dst index illustrate how the NARMAX approach is able to find a coupling function for the Dst index from data, which was then analytically justified from first principles. While the review of the electron flux demonstrates how NARMAX is able to reveal new insight into the physics of the acceleration and loss processes within the radiation belt.

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AGRESTA, Franca, Claire GARRETT, Sharyn STOCK-MYER, David GARDNER, and Kate STERN. "Is the Ploidy Status of the Embryo Impacted by Gonadotrophin Dose?" Fertility & Reproduction 04, no. 03n04 (September 2022): 172. http://dx.doi.org/10.1142/s2661318222740838.

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Background: There has been much debate and concern about whether the dose of exogenous gonadotrophins used for controlled ovarian stimulation (COS) adversely affects the selection of leading follicles and potentially impacts the quality of the eggs retrieved and the embryos created. The ploidy status of the embryo, as assessed by pre-implantation genetic testing (PGT), is used as a measure of embryo quality.

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Russkikh, A. A., N. V. Lukyanenko, N. Ya Lukyanenko, T. V. Safyanova, and A. A. Petrova. "Comparative aspects of the influence of exogenous risk factors on the occurrence of nosocomial pneumonia among patients infected with COVID-19 in intensive care units and surgical and therapy departments of a large multidisciplinary hospital." Sanitarnyj vrač (Sanitary Doctor), no. 5 (April 29, 2023): 311–18. http://dx.doi.org/10.33920/med-08-2305-04.

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The problem of lung damage in viral infection caused by COVID-19 due to high frequency is relevant for anesthesiologists, resuscitators and epidemiologists. According to scientific research, when a patient is on a ventilator, the risk of an adverse outcome can reach 42 %. This is determined by the widespread use of invasive diagnostic manipulations in patients with COVID-19, which may be associated with bacterial and viral contamination of the environment. This article presents the results of a study of the influence of exogenous risk factors on the development of nosocomial pneumonia in 164 patients infected with COVID-19 in intensive care units and departments of surgical and therapeutic profile of a large multidisciplinary hospital. The number of exogenous risk factors for nosocomial pneumonia among patients infected with COVID-19 in intensive care units exceeded by 7.3 times their presence in surgical departments with a predominance of artificial lung ventilation (90.2 %), tracheostomy (87.8 %), oxygen therapy (68.3 %). The negative impact was determined by the untimely change of air filters during artificial lung ventilation — 16.2 % and tracheal sanitation –8.1 %, poor hand treatment of medical personnel,before tracheal sanitation — 39.2 %.

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Mardanov, Ilham Ildirim Oglu. "STUDY OF TIME DYNAMICS OF EROSION PROCESSES IN THE HIGH MOUNTAINS OF GREATER CAUCASUS BY SATELLITE INFORMATION." Geodesy and cartography 49, no. 2 (June 21, 2023): 94–98. http://dx.doi.org/10.3846/gac.2023.16918.

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This work is devoted to the results of comparative visual analysis and instrumental processing of space and aerial photographs of the Azerbaijani part of the Greater Caucasus Lateral Range to assess the relief conditions affecting the formation of high mountain landscapes. The development of exogenous processes in the mountain-meadow and subnivalnival belts in this area has a great impact on the transformation of high mountain landscapes, degradation of soil and vegetation. There is a certain territorial and time differentiation in the intensity of these processes.

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Kislov, A. V., A. R. Alyautdinov, A. V. Baranskaya, N. G. Belova, D. M. Bogatova, M. A. Vikulina, I. V. Zheleznova, G. V. Surkova, and G. N. Kraev. "Projection of Climate Change and the Intensity of Exogenous Processes on the Territory of the Yamal–Nenets Autonomous District." Doklady Earth Sciences 510, no. 2 (June 2023): 487–93. http://dx.doi.org/10.1134/s1028334x23600408.

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Aleman, Julie C., Audrey Saint-Jean, Bérangère Leys, Christopher Carcaillet, Charly Favier, and Laurent Bremond. "Estimating phytolith influx in lake sediments." Quaternary Research 80, no. 2 (September 2013): 341–47. http://dx.doi.org/10.1016/j.yqres.2013.05.008.

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So far, no phytolith extraction protocols have been tested for accuracy and repeatability. Here we aim to display a phytolith extraction method combining the strengths of two widely used protocols, supplemented with silica microspheres as exogenous markers for quantifying phytolith concentrations. Phytolith concentrations were estimated for samples from two sedimentary sequences in which numerical age–depth models make it possible to calculate phytolith influxes (phytolith numbers per cm2per yr). Analysis of replicates confirmed the statistical robustness, the repeatability and the very few biases of our extraction technique for small phytoliths, since the relationship between grass silica short cells and microspheres was kept stable. Furthermore, we demonstrated that silica microspheres are robust exogenous markers for estimating phytolith concentrations. The minimum number of items (i.e., phytoliths plus silica microspheres) that must be counted to estimate phytolith concentrations and thus influxes depends on the ratio of phytoliths to microspheres (R) and is minimized when R = 1. Nevertheless, we recommend using ratios R ≤ 1 in order to avoid having the counting process become excessively time-consuming, because microspheres are easier to identify and count than phytoliths.

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Petrenko, M., and V. Kharchenko. "Ovicidal effect of the modern disinfectant on exogenous stages of development of nematodes Trichuris skrjabini." Scientific Messenger of LNU of Veterinary Medicine and Biotechnologies 25, no. 110 (June 18, 2023): 26–31. http://dx.doi.org/10.32718/nvlvet11005.

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Epizootiological monitoring studies on parasitoses of domestic ruminants indicate that one of the most common causes of nematodes of the digestive tract in large and small cattle are helminths of the genus Trichuris. Those helminths develop directly – without intermediate hosts, and their embryonic stages became invasive in the environment under favorable conditions. The eggs of those parasites are incredibly resistant and can be infective for a long time contaminating environmental objects. So, to improve the parasitological situation in livestock farms, we have to look for the most effective methods of disinfestation of environmental objects. This study aimed to establish the ovicidal effect of the modern disinfectant “Arquadez-plus” on eggs of nematodes Trichuris skrjabini parasitizing sheep. This product's high level of ovicidal efficiency was seen in experimental cultures of nematodes' eggs at 1.5 % concentration and 60 min exposure (94.2 %) and 2.0 % concentration and 10–60 min exposure (98.3–100.0 %). The ovicidal effect of “Arquadez-plus” on eggs of T. skrjabini was seen as a cessation of development; shrinking embryo plugs destruction, the release of underdeveloped larvae from eggs, and their death. During the use of this disinfectant, the changes in morphometric data of Trichuris eggs in test cultures were noticeable. At the most effective disinfectant concentrations and exposures, the dimensions of eggs were changed significantly: length smaller by 3.8–3.9 % (71.9–72.0 μm) and width more significant by 5.0–5.2 % (34.9–35.0 μm) as compared to those parameters in control (74.8 and 33.2 μm). This is evidence of the violations in nematodes' egg development. The data obtained allow us to recommend the disinfectant of domestic production, “Arquadez-plus”, for effectively controlling and preventing trichurosis in sheep on livestock farms.

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Donets, Lesia, Olena Nikoliuk, and Rafaela Znachek. "Improvement of the advertising management system of enterprises in the conditions of globalization." Economic journal Odessa polytechnic university 4, no. 14 (December 29, 2020): 65–69. http://dx.doi.org/10.15276/ej.04.2020.8.

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The article presents the prospects of forming a system of management of advertising activities of enterprises in the context of globalization. It is established that advertising activity of enterprises can be carried out in two following directions: 1) formation by the enterprise of independent organizational structures which are engaged only in advertising activity; 2) definition of advertising activity as a key direction of realization of marketing activity of each enterprise. In order to promote the effectiveness of the goals set for advertising, it is necessary to first ensure the quality of the relevant inputs, and then the advertising management system, also taking into account the influence of exogenous factors and the availability of feedback. Such management of advertising activity should provide necessary high-quality forecast for parameters of an exit, the raised quality of inputs of such system and the account of exogenous factors of direct and indirect influence, promoting thereby normal course at the enterprise of advertising activity.

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Rima, SA, U. Somaddar, SC Samanta, and G. Saha. "Effect of Exogenous Salicylic Acid and Silicon Application on Salinity Tolerance of Rice." Bangladesh Agronomy Journal 25, no. 2 (May 7, 2023): 119–27. http://dx.doi.org/10.3329/baj.v25i2.65956.

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Soil salinity remarkably hinders rice growth, development and productivity. The present study was set up to explore the role of exogenous salicylic acid (SA) and silicon (Si) application on the growth and yield performance of two contrasting rice genotypes, namely BRRI dhan41 (salt-tolerant) and BRRI dhan49 (salt-sensitive) under salinity. The experiment was laid out in a randomized complete block design with three replications and four SA and Si treatments such as control (tap water), 100 ppm SA, 100 ppm Si (as CaSiO3) and, co-application of SA and Si (50 ppm each). Results revealed that the maximum plant height (125.2 cm), fresh weight of shoot (267.3 g) and maximum K+/Na+ (5.2) were obtained in BRRI dhan49 after sole application of Si under salt stress. Besides, the number of grains per panicle and grains per hill significantly increased in BRRI dhan41 after the sole application of SA (64 and 46%, respectively) and co-application of SA and Si (29 and 21%, respectively), and in BRRI dhan49 with sole SA (182 and 277%, respectively) and Si (75 and 446%, respectively) compared with their respective controls. Besides, we observed that the K+/Na+ was increased where the shoot accumulation of Na+ reduced significantly in both rice varieties after sole and co-application of SA and Si compared with the untreated plants. However, the present findings showed new dimensions regarding the beneficial effects of Si on rice plants which could effectively be utilized to grow and maximize rice production in the saline-prone coastal areas of Bangladesh encountering detrimental effects of salt stress on rice. Bangladesh Agron. J. 2022, 25(2): 119-127

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Setiawan, Zhein Adhi Mahendra, and Yuichiro Yoshida. "Geographical Condition And Port Development." LIQUIDITY 10, no. 2 (December 31, 2021): 218–35. http://dx.doi.org/10.32546/lq.v10i2.1110.

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The first-time purposely build container ships introduced in 1967 with a draft of 9 meters, and now, newer container ship drafts can reach 16 meters and more. The development of the container ship dimension is rapid. Ports respond to these changes and keep up with the more significant size and a deeper draft of the new container ship design. Ports are developing their infrastructure from installing gantry cranes to dredge their seafloor. This research reviews that phenomenon and studied how ports adapt to the changing container ship dimension, especially for Post Panamax container ships built for efficiency. To do that, we use an exogenous variable of ports' depth from 1972 to 1985 before the ports knew that they would need deeper depth to accommodate such ships. We find that ports with actual depth more or equal to 13.716 meters is significantly affected port to accommodate Post Panamax container ship in this present time. The scope of this research is to show how a port responds to the change of the dimension of a container ship. Nevertheless, this research can be a steppingstone to measure the causality of trade that never has been done correctly before by introducing an exogenous variable that is strong, which port’s depth regarding the Post Panamax container ship draft.

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Chen, Jiaqi, Jiming Lv, Ning Li, Qingwei Wang, and Jian Wang. "External Groundwater Alleviates the Degradation of Closed Lakes in Semi-Arid Regions of China." Remote Sensing 12, no. 1 (December 20, 2019): 45. http://dx.doi.org/10.3390/rs12010045.

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There are a large number of lakes with beaded distribution in the semi-arid areas of the Inner Mongolian Plateau, and some of them have degraded or even disappeared during the past three decades. We studied the reasons of the disappearance of these lakes by determining the way of replenishment of these lakes and the impact of the natural-social environment of the basin, with the aim of saving these gradually disappearing lakes. Based on remote sensing image and hydrological analysis, this paper studied the recharge of Daihai Lake and Huangqihai Lake. The deep learning method was used to establish the time-series of lake evolution. The same method was combined with the innovative woodland and farmland extraction method to set up the time-series of ground classification composition in the basins. Using relevant survey data, combined with soil water infiltration test, water chemical, and isotopic signature analysis of various water bodies, we found that the Daihai Lake area is the largest in dry season and the smallest in rainy season and the other lake is not satisfied with this phenomenon. In addition, we calculated the specific recharge and consumption of the study basin. These experiments indicated that the exogenous groundwater is recharged directly through the faults at the bottom of Daihai Lake, while the exogenous groundwater is recharged in Huangqihai Lake through rivers indirectly. Large-scale exploitation of groundwater for agricultural irrigation and industrial production is the main cause of lake degradation. Reducing the extraction of groundwater for agricultural irrigation is an important measure to restore lake ecology.

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Hernando, Joyce B., and Elleine Rose Oliva. "Path Model Analysis on Academic Writing Motivation." International Journal of Research and Innovation in Social Science 06, no. 05 (2022): 437–54. http://dx.doi.org/10.47772/ijriss.2022.6522.

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The study’s main objective is to determine the best fit model in academic writing motivation. Additionally, the research aims to assure the significance of the relationship between the exogenous variables: metacognitive awareness of reading strategies, language exposure, language skills development, and the endogenous variable on academic writing motivation. The study used descriptive -correlational design and Path Model Analysis to determine the most appropriate model on academic writing motivation. Random sampling was used to determine the number of students on each campus. The data was gathered from four hundred (400) students under the education program from five (5) branches of the University of Mindanao: UM Tagum, UM Panabo, UM Peñaplata, UM Bansalan, and UM Digos. Survey questionnaires were used to gather data. The results revealed that the level of metacognitive awareness of reading strategies, language exposure, development of language skills, and academic writing motivation was at a high level. Based on the results, it was clearly explained that the exogenous variable on metacognitive awareness of reading strategies, language exposure, language skills development, and the endogenous variable on academic writing motivation that can be seen in the fourth model was the most appropriate model for the research.

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A.V., FILATOV. "THE EFFECT OF PREPARATION PROGESTAMAG® ON REPRODUCTIVE QUALITIES OF REPLACEMENT GILTS." PIG-BREEDING, no. 2 (2022): 52–54. http://dx.doi.org/10.37925/0039-713x-2022-2-52-54.

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The most effective frequency of administration and terms use of preparation Progestamag® for increase of reproductive performance in replacement gilts has been determined. The efficiency this progesterone-containing preparation in critical period of animal pregnancy was established. Because of conducted studies, it was revealed that the injection of exogenous progesterone of replacement gilts in initial period of pregnancy contributes increase number of fertilized and farrowed animals, which eventually led to increase their multiple fetation.

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Andrianajaina, Todizara, David Tsivalalaina Razafimahefa, Raonirivo Rakotoarijaina, and Cristian Goyozo Haba. "Grid Search for SARIMAX Parameters for Photovoltaic Time Series Modeling." Global Journal of Energy Technology Research Updates 9 (December 23, 2022): 87–96. http://dx.doi.org/10.15377/2409-5818.2022.09.7.

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The SARIMAX (Seasonal Autoregressive Integrated Moving Average with eXogenous regressors) model is a time series model that can be used to forecast future values of a time series, given its past values. It is beneficial for modeling time series data that exhibits seasonality and incorporating additional exogenous variables (variables that are not part of the time series itself but may affect it). One way to optimize the performance of a SARIMAX model is to use a grid search approach to find the best combination of hyperparameters for the model. A grid search involves specifying a set of possible values for each hyperparameter and then training and evaluating the model using all possible combinations of these values. The combination of hyperparameters that results in the best model performance can then be chosen as the final model. To perform a grid search for a SARIMAX model, you must define the grid of hyperparameters you want to search over. This will typically include the values of the autoregressive (AR) and moving average (MA) terms and the values of any exogenous variables you want to include in the model. We will also need to define a metric to evaluate the model's performance, such as mean absolute or root mean squared error. Once we have defined the grid of hyperparameters and the evaluation metric, you can use a grid search algorithm (such as a brute force search or a more efficient method such as random search or Bayesian optimization) to evaluate the performance of the model using all possible combinations of hyperparameters. The combination of hyperparameters that results in the best model performance can then be chosen as the final model. In this article, we will explore the potential of SARIMAX for PV time series modeling. The objective is to find the optimal set of hyperparameters. Grid Search passes all hyperparameter combinations through the model individually and checks the results. Overall, it returns the collection of hyperparameters that yield the most outstanding results after running the model. One of the most optimal SARIMAX (p,d,q) x (P, D, Q,s) combinations is SARIMAX (0,0,1) x (0,0,0,4).

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Morozova, A. V., E. A. Lihacheva, I. V. Chesnokova, and A. V. Koshkarev. "Assessment and forecast of dangerous exogenous processes activation during climate change based on the analysis of thematic maps data." Geodesy and Cartography 966, no. 12 (January 20, 2021): 11–20. http://dx.doi.org/10.22389/0016-7126-2020-966-12-11-20.

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The research purpose is to develop the principles of cartographic assessment and long-term risk forecasts for the development of cryogenic and erosion processes in the continental zone of the Russian Arctic sector under global climatic changes. ′Map of the modern dynamics of Northern Eurasia (within Russia and neighboring countries) 1

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Pakshyn, Maksym, Ivan Lyaska, Kostyantyn Burak, Vitaliy Kovtun, Liubov Dorosh, Mykola Hrynishak, Volodymyr Mykhailyshyn, and Tetyana Grytsyuk. "ESTIMATION OF EARTH’S SURFACE MOVES AND DEFORMATION OF THE TERRITORY OF MINE “KHOTIN” OF KALUSH-GOLINSKYY FIELD BY METHOD OF RADAR INTERFEROMETRY." Geodesy and cartography 45, no. 5 (April 17, 2019): 37–42. http://dx.doi.org/10.3846/gac.2019.6300.

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The article present processing techniques of radar data for calculating the deformations of the earth’s surface on the example of minefield, that is situated under the exogenous influence of underground workings of the “Khotin” minery Kalush-Golinskyy deposit. The estimation of accuracy of radar image processing methods, namely, the interferometry of the permanent radar scatterers and the interferometry of a series of small baseline lines, is made, by comparison with the results of processional geometric levelling with a short beam of deformation soil rappers of the profile lines of the mine field. On the basis of geodetic instrumental field observations, shells of sediments of the earth’s surface were constructed and the boundaries of zero deposition caused by deformation processes in the area of hollow fields were established. Working out of an array of measurements by two methods of interferometry allowed to put on the digital map the data that reflect the average sedimentation rates in the year at the radar measurement locations. Due to the ranking of average annual sedimentation rates, areas of interest were outlined where significant precipitation was observed. This made it possible to assert that the earth’s crust was caused by the anthropogenic influence on the Khotin miner, which was observed since 1977 and continues existing, albeit at lower speeds. The use of expensive and labour-intensive processional levelling only on pre-determined problem areas is rational both from a scientific and from a production point of view, as it allows better use of material and human resources. Therefore, there is a need for an integrated monitoring system to prevent an exogenous catastrophe on an ongoing basis.

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Journal articles on the topic 'Exogenous earth sciences'

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