Analysis of Principal Components of the Sea Ice Concentration Fields in the Barents Sea

The processes of interaction within the ocean-sea ice-atmosphere system which influence a multiyear ice cover dynamics in the Barents Sea are investigated. Being analyzed, the principal components of the sea ice concentration fields in the Barents Sea make it possible to distinguish three modes of inter-annual variability of the sea ice concentration. It is shown that the first mode describes 65.4 % of the sea ice concentration total variance and its multiyear trend. The second mode (10.8 %) is related to the variations of the heat inflow due to the sea currents governed by the atmospheric circulation. The third one (7.8 %) is associated with variability of the total turbulent heat flux from the ocean to the atmosphere at the boundary of the ice edge in the northern Barents Sea

Ultrasonically assisted drilling of rocks

Conventional drilling of rocks can generate significant damage in the drilled material; a material layer is often split off a back surface of a sample during drilling, negatively affecting its strength. To improve finish quality, ultrasonically assisted drilling (UAD) was employed in two rocks - sandstone and marble. Damage areas in both materials were reduced in UAD when compared to conventional drilling. Reductions in a thrust force and a torque reduction were observed only for UAD in marble; ultrasonic assistance in sandstone drilling did not result in improvements in this regard

InnovatIve methods to estImate athletes' predIsposItIon to cyclIc and complex coordInatIon sports

Objective of the study was to analyze and substantiate the effectiveness of innovative methods for assessing athletes’ predisposition to cyclic and complex coordination sports. Methods and structure of the study. Sampled for the study were the highly-skilled student-athletes of the Russian State University of Physical Education, Sports, Youth and Tourism and Polessky State University (Pinsk, Republic of Belarus), specializing in academic rowing, swimming, artistic gymnastics, and rifle and pistol shooting. The study was conducted at the premises of the Institute for Sports and Sports Medicine Research at Russian State University of Physical Education, Sports, Youth and Tourism and Applied-Research Laboratory "Longitudinal Studies" at Polessky State University. A total of 75 junior athletes engaged in cyclic and complex coordination sports were examined. A set of innovative methods for assessing the athletes’ predisposition to cyclic and complex coordination sports included molecular-genetic and psycho-physiological diagnostics of the subjects. Results and conclusions. The innovative methods for evaluating athletes’ individual capabilities in a long-term training process enable to accurately determine their predisposition to a chosen sport. During the study, we created a DNA bank of the junior athletes and an electronic database that reflects the study findings. The data obtained can be useful to a wide circle of experts working with both young and qualified athletes engaged in cyclic and complex coordination sports.Цель исследования – рассмотреть и обосновать эффективность инновационных методов оценки предрасположенности спортсменов к циклическим и сложнокоординационным видам спорта. Методика и организация исследования. В качестве испытуемых выступили спортсмены высокой квалификации, специализирующиеся в академической гребле, плавании, спортивной гимнастике и пулевой стрельбе, представляющие Российский государственный университет физической культуры, спорта, молодежи и туризма (ГЦОЛИФК), а также Полесский государственный университет (Пинск, Республика Беларусь). Исследования проводились в 2017-2020 гг. на базе НИИ спорта и спортивной медицины РГУФКСМиТ и Отраслевой лаборатории «Лонгитюдинальные исследования» ПолесГУ. Всего обследовано 75 спортсменов-юниоров в циклических и сложнокоординационных видах спорта. Комплекс инновационных методик оценки предрасположенности спортсменов к циклическим и сложнокоординационным видам спорта включал молекулярно-генетическую и психофизиологическую диагностику испытуемых. Результаты исследования и выводы. Инновационные методы оценки индивидуальных возможностей спортсменов в многолетнем тренировочном процессе позволяют с высокой точностью определить предрасположенность конкретного индивида к занятиям избранным видом спорта. В процессе выполнения работы сформирован банк ДНК спортсменов-юниоров и создана электронная база данных, в которой отражена информация, полученная в результате исследований. Результаты исследования могут быть полезны для широкого круга специалистов, работающих как с юными, так и с квалифицированными спорт-сменами в циклических и сложнокоординационных видах спорта

Relations between parameters of fracture processes on different scale levels

© 2018, Pleiades Publishing, Ltd. Abstract: The processes of ultrasonically-assisted drilling (UAD) and the dynamic tests on split Hopkinson pressure bar (SHPB), fracture in which is implemented at various structural-scale levels, are considered. The simulation of UAD based on the Hertz contact problem and the structural−time criterion is presented. The problem of using the value of the fracture incubation time and its linear size obtained from the tests on SHPB in the simulation is considered. A principle of equal power is used for converting the strength parameters into another structural−scale level. The theoretical curve obtained in the simulation is compared with the results of experiments on conventional drilling (CD) and UAD

Взаимосвязь массовой культуры и индустрии видеоигр: политико-философский аспект

Как элемент массовой культуры видеоигры пользуются большим успехом, ими интересуются разные слои населения. Они взаимодействуют с большим количеством людей, что делает их важным объектом изучения политологическим сообществом. Их потенциал малоизучен в контексте массовой культуры

Имиджевые аспекты формирования общественно-политических молодежных организаций в региональном измерении (на примере Липецкой области)

В статье через призму конкретного региона исследуется опыт привлечения молодежи в деятельность общественно-политических организаций путем улучшения их имиджевых механизмов

Quantum-chemical modeling of squaric acid ferroelectric behavior

The properties of layered 2d-ferroelectric and at the same time 3d-antiferroelectric materials H2C4O4/D 2C4O4 are studied by quantum-chemical approach using pseudospin formalism in frames of Ising-type model Hamiltonian with tunneling terms. This Hamiltonian parameters (that are Ω - tunneling integral and Jij- Ising parameters) for both materials were obtained by means of RHF, MP2-MP4 and DFT/B3LYP calculations for different clusters which simulate characteristic fragments of materials crystalline structure. Resulting Ω and Jij values for crystals at hand were used in the limits of two mean field approximations that allow explaining main peculiarities of the observed order-disorder phase transition. The nature is discussed of the Bethe cluster lowest energy level splitting that has been introduced for correct description of this transition. Copyright © 2010 Wiley Periodicals, Inc

Quantum-chemical modeling of squaric acid ferroelectric behavior

The properties of layered 2d-ferroelectric and at the same time 3d-antiferroelectric materials H2C4O4/D 2C4O4 are studied by quantum-chemical approach using pseudospin formalism in frames of Ising-type model Hamiltonian with tunneling terms. This Hamiltonian parameters (that are Ω - tunneling integral and Jij- Ising parameters) for both materials were obtained by means of RHF, MP2-MP4 and DFT/B3LYP calculations for different clusters which simulate characteristic fragments of materials crystalline structure. Resulting Ω and Jij values for crystals at hand were used in the limits of two mean field approximations that allow explaining main peculiarities of the observed order-disorder phase transition. The nature is discussed of the Bethe cluster lowest energy level splitting that has been introduced for correct description of this transition. Copyright © 2010 Wiley Periodicals, Inc