Issue 4 (54)

UPDATED MATHEMATICAL MODEL OF THERMAL, EFFECTIVE AND ENVIRONMENTAL PARAMETERS OF GAS PISTON ENGINES

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A.G. Klimenko Institute of Natural and Technical Systems, RF, Sevastopol, Lenin St., 28 E-mail: kag1958776@gmail.com DOI: 10.33075/2220-5861-2023-4-135-141 UDC 621.43.013              EDN: https://elibrary.ru/speyxa Abstract: The article analyses mathematical model of calculation of thermal,effective and environmental parameters of gas piston diesel engines of well-known companies of both foreign and domestic manufacturers for adequacy … Read more

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On the mechanics of long-shore sediment transfer on the sea coasts

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A.E. Shchodro1, D.A. Antonenkov2, A.N. Sorokin3 1Institute of Natural and Technical Systems, RF, Sevastopol, Lenin St., 28  E-mail: ashodro@ya.ru 2Marine Hydrophysical Institute of RAS, RF, Sevastopol, Kapitanskaya St., 2 3PE «Sorokin A.N.», RF, Sevastopol DOI: 10.33075/2220-5861-2023-4-124-134  UDC 551.4.013                                                            EDN: https://elibrary.ru/speyxa Abstract: In the mechanics of the long-shore sediment transfer on the sea coasts and reservoirs, … Read more

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Selecting primary sensor types considering nonlinear error characteristics

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Y.E. Shishkin, A.V. Skatkov Institute of Natural and Technical Systems, RF, Sevastopol, Lenin St., 28 E-mail: iurii.e.shishkin@gmail.com DOI: 10.33075/2220-5861-2023-4-112-123  UDC 681.3       EDN: https://elibrary.ru/speyxa Abstract: The paper addresses the application of simulation modeling and mathematical methods to assist decision-making in selecting the type of primary sensor, considering its non-linear error characteristics. The approach integrates algorithmic solutions … Read more

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Estimation of probabilistic characteristics of results of remote sensing of the Earth

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Yu.V. Doronina, A.M. Skatkov Sevastopol State University, RF, Sevastopol, Universitetskaya St., 33 E-mail: YVDoronina@sevsu.ru DOI: 10.33075/2220-5861-2023-4-103-111  UDC 519.8                                                             EDN: https://elibrary.ru/speyxa Abstract: The article focuses on solving the problem of approximate estimation of probabilistic characteristics of object detection results during remote sensing of the Earth. In practice, it is often necessary to know about the … Read more

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Methodological approaches to the assessment of meteorological and climatic load on the objects of cultural heritage

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A.A. Egorkin1,2, V.P. Evstigneev1,2 1Institute of Natural and Technical Systems, RF, Sevastopol, Lenin St., 28 2Sevastopol State University, RF, Sevastopol, Universitetskaya St., 33 E-mail: egorkin1974@yandex.ru DOI: 10.33075/2220-5861-2023-4-94-102  UDC 502.3, 551.504.54                                                 EDN: https://elibrary.ru/speyxa Abstract: At present, a modeling method for the study of safety issues of buildings and structures exposed to meteorological and climatic impacts is … Read more

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Morphometric features of underwater coastal slopes as indicators of matter exchange between land and sea in the coastal zone (on the example of the black sea coast of Crimea)

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I.V. Agarkova-Lyakh   Institute of Natural and Technical Systems, RF, Sevastopol, Lenin St., 28 E-mail: iva_crimea@mail.ru DOI: 10.33075/2220-5861-2023-4-86-93 UDC 551.435 (262.5+477.75)                                EDN: https://elibrary.ru/speyxa Abstract: A typification of the underwater coastal slopes of the Black Sea coast of Crimea is carried out according to their slope and width. Four types of underwater slopes have … Read more

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Dynamics of natural fires in the territory of sevastopol for the period 2015–2023

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L.I. Lukina, D.V. Moiseev, V.P. Evstigneev, D.Y. Voronin Sevastopol State University, RF, Sevastopol, Universitetskaya St., 33 E-mail: DVMoiseev@sevsu.ru DOI: 10.33075/2220-5861-2023-4-78-85 UDC 630.2(470-13):[504.2:614.84] EDN: https://elibrary.ru/speyxa Abstract: In this paper, the dynamics of forest fires in the Sevastopol forestry for the period 2015–2023 is considered, the annual number of fires, the type of fire, the area of … Read more

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Long-term trends in variability of dissolved oxygen and salinity concentration under the cold intermediate layer of the black sea waters

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A.A. Valle Institute of Natural and Technical Systems, RF, Sevastopol, Lenin St., 28 E-mail: ogorodovaa.a@mail.ru DOI: 10.33075/2220-5861-2023-4-71-77             UDC 551.465 (262.5)                                        EDN: https://elibrary.ru/speyxa Abstract: In the paper, we analyze the spatiotemporal variability … Read more

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On control methods of green plantings condition in urbanized territories

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M.V. Volkodaeva, Ya.A. Volodina Institute of Design, Ecology and Hygiene, RF, St. Petersburg, Medikov Av., 9, lit. B, 17N E-mail: m.volkodaeva@yandex.ru DOI: 10.33075/2220-5861-2023-4-65-70                                                 UDC 504.064.3     EDN: https://elibrary.ru/speyxa Abstract: Analysis of currently … Read more

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Microwave measurement of water salinity

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D.A. Poletaev, B.V. Sokolenko V.I. Vernadsky Crimea Federal University, RF, Simferopol, Vernadsky Av., 4 E-mail: poletaevda@cfuv.ru DOI: 10.33075/2220-5861-2023-4-58-64 UDC 621.317                                                            EDN: https://elibrary.ru/speyxa Abstract: In this paper the process of optimizing the geometry of a resonant transducer for improving sensitivity and its application for measuring water salinity are described. Microwave diagnostic methods are widely used … Read more

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