bluuebunny/crossref_metadata_2025_split huggingface dataset:
Mathematical modeling in the process of designing launch systems for marine robotic systems
Authors: Красильников Р.В. , Жарова С.С. 
Published: December 2021

Одним из востребованных направлений в современном развитии передовых в техническом плане стран является создание робототехнических систем и комплексов разного базирования. Одним из приоритетных направлений использования телеуправляемых необитаемых подводных аппаратов остаются поисковые работы, связанные с обнаружением и обследованием подводных объектов. Актуальность данных работ определяется расширением областей применения аппаратов, в том числе в Арктическом регионе России в рамках работ по освоению континентального шельфа. В статье раскрыт общий методологический подход к проектированию пусковых систем, согласованный с требованиями нормативных документов, определяющих порядок разработки новых образцов техники. Показана роль математического моделирования в рамках процесса создания пусковых систем. В качестве основы методического подхода к математическому моделированию предложен единый математический аппарат обоснования проектных параметров пусковых систем. Показаны рациональные по времени и трудозатратам подходы к оценке адекватности математических моделей процессов пуска, базирующиеся на сравнении экспериментальных и расчетных величин перемещения и ускорений движущихся элементов.
One of the demanded directions in the modern development of technically advanced countries is the creation of robotic systems and complexes of various bases. One of the priority areas for the use of remotely controlled unmanned underwater vehicles remains search work related to the detection and examination of underwater objects. The relevance of these works is determined by the expansion of the areas of application of the vehicles, including in the Arctic region of Russia as part of the work on the development of the continental shelf. The article discloses a general methodological approach to the design of launch systems, consistent with the requirements of regulatory documents that determine the procedure for the development of new models of equipment. The role of mathematical modeling in the process of creating launch systems is shown. A unified mathematical apparatus for substantiating the design parameters of launch systems is proposed as the basis for a methodological approach to mathematical modeling. The rational in terms of time and labor costs approaches to assessing the adequacy of mathematical models of start-up processes, based on a comparison of experimental and calculated values of displacement and acceleration of moving elements, are shown.
Bending of a ship's skin panel loaded along the axis of symmetry
Authors: Кныш Т.П. , Сухотерин М.В. , Барышников С.О. 
Published: December 2021

Задача изгиба прямоугольной панели обшивки от действия распределенной по оси симметрии поперечной нагрузки не имеет точного решения в конечном виде в виду сложности краевых условий и вида нагрузки. Использование другими авторами различных приближенных методов оставляет открытым вопрос о точности полученных результатов. Целью исследования является получение точного решения с помощью гиперболо-тригонометрических рядов по двум координатам. Для этого используется метод бесконечной суперпозиции указанных рядов, которые в отдельности удовлетворят лишь части граничных условий. Порождаемые ими невязки взаимно компенсируются в ходе итерационного процесса и стремятся к нулю. Частное решения представлено двойным рядом Фурье. Точное решение достигается увеличением количества членов в рядах и числа итераций. При достижении заданной точности процесс прекращается. Получены численные результаты для прогибов и изгибающих моментов для квадратной пластины при различной длине загруженной части оси пластины. Представлены 3D-формы изогнутой поверхности пластины и эпюры изгибающих моментов.
The problem of bending a rectangular skin panel from the action of a transverse load distributed along the axis of symmetry does not have an exact solution in the final form due to the complexity of the boundary conditions and the type of load. The use of various approximate methods by other authors leaves open the question of the accuracy of the results obtained. The aim of the study is to obtain an exact solution using hyperbolo-trigonometric series in two coordinates. To do this, we use the method of infinite superposition of these series, which individually satisfy only part of the boundary conditions. The residuals generated by them are mutually compensated during the iterative process and tend to zero. The quotient of the solution is represented by a double Fourier series. The exact solution is achieved by increasing the number of terms in the series and the number of iterations. When the specified accuracy is reached, the process stops. Numerical results are obtained for deflections and bending moments for a square plate with different lengths of the loaded part of the plate axis. 3D shapes of the curved surface of the plate and diagrams of bending moments are presented.
ADAPTATION OF STUDENTS AT THE INITEAL STAGE OF TRAINING IN UNIVERSITY BY MEANS OF PHYSICAL CULTURE
Authors: Ильющенко Сергей Анатольевич 
Published: December 2021

В данной статье рассмотрены разработки новых способов адаптации к процессу обучения в вузе средствами физической культуры и необходимость внедрения новых, вариативных форм проведения занятий по физической культуре, способствующих адаптации.
This article discusses the development of new methods of adaptation to the learning process at the university by means of physical culture and the need to introduce new, variable forms of conducting physical culture lessons that contribute to adaptation.
PHYSICAL CULTURE AS A MEANS OF ENSURING HUMAN AND SOCIAL SECURITY
Authors: Зароднюк Галина Владимировна , Ларионова Марина Николаевна 
Published: December 2021

Данная статья посвящена проблеме обеспечения безопасности человека и общества средствами физической культуры. Поскольку научно-технический прогресс постоянно повышает требования к высококвалифицированным работникам, то труд специалиста становится все более ответственным, напряженным и сложным по своему содержанию и как следствие, постоянная забота о сохранении своей безопасности во всех сферах деятельности становится весьма актуальной. И ощутимую помощь в этом вопросе оказывают занятия физической культурой.
This article is devoted to the problem of ensuring the safety of man and society by means of physical culture. Since scientific and technological progress constantly increases the requirements for highly qualified employees, the work of a specialist becomes more and more responsible, stressful and complex in its content, and as a result, constant concern about maintaining their safety in all areas of activity becomes very relevant. And physical education classes provide tangible help in this matter.
PEDAGOGICAL POTENTIAL OF ELECTRONIC EDUCATIONAL TECHNOLOGIES IN THE INFORMATION SOCIETY
Authors: Селюкин Даниил Борисович 
Published: December 2021

Современному обществу необходимо качественное образовательное пространство, в котором реализуются цели образования, удовлетворяются интересы и потребности государства, социума и личности. Для решения данной задачи в образовательной системе необходимо осуществить интеграцию информационных и коммуникационных технологий с учётом теоретических концепций образовательного процесса.
Modern society needs a high-quality educational space in which the goals of education are realized, the interests and needs of the state, society and the individual are satisfied. To solve this problem in the educational system, it is necessary to integrate information and communication technologies taking into account the theoretical concepts of the educational process.
Pengaruh Kepemimpinan Kepala dan Peranan Komite Madrasah Terhadap Kinerja Guru Madrasah Aliyah di Kabupaten Banjarnegara
Authors: Natir Natir 
Published: December 2021

Kepemimpinan kepala madrasah dan peranan komite madrasah merupakan dua faktor yang berpengaruh terhadap kinerja guru. Jenis penelitian ini adalah penelitian lapangan dengan teknik pengumpulan data menggunakan kuisioner dengan cara proportionate stratified random sampling. Sedangkan analisis data menggunakan metode deskriptif dan analisis regresi berganda. Hasil penelitian menunjukkan; 1. terdapat pengaruh kepemimpinan kepala madrasah terhadapkinerja guru Madrasah Aliyah di Kabupaten Banjarnegara, dibuktikan dengan nilai T hitung sebesar 5,983 dengan signifikansi 0,000 (p<0,05), 2. terdapat pengaruh peranan komite madrasah terhadap kinerja guru Madrasah Aliyah di Kabupaten Banjarnegara, dibuktikan dengan nilai T hitung sebesar 3,704 dengan signifikansi 0,000 (p<0,05), 3. terdapat pengaruh kepemimpinan kepala madrasah dan peranan komite madrasah terhadap kinerja guru Madrasah Aliyah di Kabupaten Banjarnegara, dibuktikan dengan nilai F hitung sebesar 87,501 dengan signifikansi 0,000 (p<0,05). Kepemimpinan kepala madrasah merupakan faktor yang dominan pengaruhnya terhadap kinerja guru Madrasah Aliyah di Kabupaten Banjarnegara
A Census of the Circumstellar Disk Populations in the Sco-Cen Complex*
Authors: Luhman K. L. 
Published: December 2021

Abstract
I have used mid-infrared (IR) photometry from the Wide-field Infrared Survey Explorer (WISE) to perform a census of circumstellar disks among ∼10,000 candidate members of the Sco-Cen complex that were recently identified with data from the Gaia mission. IR excesses are detected for more than 1200 of the WISE counterparts that are within the commonly adopted boundary for Sco-Cen, ∼400 of which are newly reported in this work. The richest population in Sco-Cen, UCL/LCC, contains the largest available sample of disks (>500) for any population near its age (∼20 Myr). UCL/LCC also provides the tightest statistical constraints to date on the disk fractions of low-mass stars for any single age beyond that of Upper Sco (∼11 Myr). For Upper Sco and UCL/LCC, I have measured the disk fractions as a function of spectral type. The disk fraction in Upper Sco is higher at later spectral types, which is consistent with the results for previous samples of candidate members. In UCL/LCC, that trend has become more pronounced; the disk fractions in UCL/LCC are lower than those in Upper Sco by factors of ∼10, 5.7, and 2.5 at B7–K5.5, K6–M3.5, and M3.75–M6, respectively. The data in UCL/LCC also demonstrate that the disk fraction for low-mass stars remains nonnegligible at an age of 20 Myr (0.09 ± 0.01). Finally, I find no significant differences in the ages of disk-bearing and diskless low-mass stars in Upper Sco and UCL/LCC based on their positions in color–magnitude diagrams.
Proton Beam Abundance Variations and Their Relation to Alpha Particle Properties
Authors: Ďurovcová Tereza , Šafránková Jana , Němeček Zdeněk 
Published: December 2021

Abstract
Less abundant but still dynamically important solar wind components are the proton beam and alpha particles, which usually contribute similarly to the total ion momentum. The main characteristics of alpha particles are determined by the solar wind source region, but the origin of the proton beam and its properties are still not fully explained. We use the plasma data measured in situ on the path from 0.3 to 1 au (Helios 1 and 2) and focus on the proton beam development with an increasing radial distance as well as on the connection between the proton beam and alpha particle properties. We found that the proton beam relative abundance increases with increasing distance from the Sun in the collisionally young streams. Among the mechanisms suggested for beam creation, we have identified the wave–particle interactions with obliquely propagating Alfvén modes being consistent with observations. As the solar wind streams get collisionally older, the proton beam decay gradually dominates and the beam abundance is reduced. In search for responsible mechanisms, we found that the content of alpha particles is correlated with the proton beam abundance, and this effect is more pronounced in the fast solar wind streams during the solar maximum. We suggest that Coulomb collisions are the main agent leading to merging of the proton beam and core. We are also showing that the variations of the proton beam abundance are correlated with a decrease of the alpha particle velocity in order to maintain the total momentum balance in the solar wind frame.
Hydrodynamic Response of the Intergalactic Medium to Reionization. II. Physical Characteristics and Dynamics of Ionizing Photon Sinks
Authors: Nasir Fahad , Cain Christopher , D’Aloisio Anson , Gangolli Nakul , McQuinn Matthew 
Published: December 2021

Abstract
Becker et al. measured the mean free path of Lyman-limit photons in the intergalactic medium (IGM) at z = 6. The short value suggests that absorptions may have played a prominent role in reionization. Here we study physical properties of ionizing photon sinks in the wake of ionization fronts (I-fronts) using radiative hydrodynamic simulations. We quantify the contributions of gaseous structures to the Lyman-limit opacity by tracking the column-density distributions in our simulations. Within Δt = 10 Myr of I-front passage, we find that self-shielding systems (N
H I > 1017.2 cm−2) are comprised of two distinct populations: (1) overdensity Δ ∼ 50 structures in photoionization equilibrium with the ionizing background, and (2) Δ ≳ 100 density peaks with fully neutral cores. The self-shielding systems contribute more than half of the opacity at these times, but the IGM evolves considerably in Δt ∼ 100 Myr as structures are flattened by pressure smoothing and photoevaporation. By Δt = 300 Myr, they contribute ≲10% to the opacity in an average 1 Mpc3 patch of the universe. The percentage can be a factor of a few larger in overdense patches, where more self-shielding systems survive. We quantify the characteristic masses and sizes of self-shielding structures. Shortly after I-front passage, we find M = 104–108
M
⊙ and effective diameters d
eff = 1–20 ckpc h
−1. These scales increase as the gas relaxes. The picture herein presented may be different in dark matter models with suppressed small-scale power.
Diastereoselective Formation of Trans-HC(O)SH through Hydrogenation of OCS on Interstellar Dust Grains
Authors: Molpeceres Germán , García de la Concepción Juan , Jiménez-Serra Izaskun 
Published: December 2021

Abstract
With the presence of evermore complex S-bearing molecules being detected lately, studies of their chemical formation routes need to keep up the pace to rationalize observations, suggest new candidates for detection, and provide input for chemical evolution models. In this paper, we theoretically characterize the hydrogenation channels of OCS on top of amorphous solid water (ASW) as an interstellar dust grain analog in molecular clouds. Our results show that the significant reaction outcome is trans-HC(O)SH, a recently detected prebiotic molecule toward G+0.693. The reaction is diastereoselective, explaining the apparent absence of the cis isomer in astronomical observations. We found that the reaction proceeds through a highly localized radical intermediate (cis-OCSH), which could be essential in the formation of other sulfur-bearing complex organic molecules due to its slow isomerization dynamics on top of ASW.
Electron Beam Measurements Employing Electron Montecarlo Algorithm on TrueBeam STx® and Clinac iX® Linear Accelerators
Authors: Saidi Kamal , Kaanouch Othmane , El Gouach Hanae , Mesradi Mohamed Reda , Mkimel Mounir , El Baydaoui Redouane 
Published: December 2021

Electron beam measurement comparison between TrueBeam STx® and Clinac iX® established. Data evaluation of eMC-calculated and measured for TrueBeam STx® performed. Dosimetric parameters measured including depth dose curves for each applicator, percentage depth dose (PDDs) curves without applicator, the profile in-air for a large field size 40×40 cm2, and the Absolute Dose (cGy/MU) for each applicator using a large water phantom (PTW, Freiburg, Germany), employing Roos and Markus plane-parallel ionization chambers. The data were examined for five electron beams of Varian’s TrueBeam STx® and Clinac iX® machines. A comparison between measurement PDDs and calculated by the Eclipse electron Monte Carlo (eMC) algorithm was performed to validate Truebeam STx® commissioning. The measured data indicated that electron beam PDDs from the TrueBeam STx® machine are well matched to those from Clinac iX® machine. The quality index R50 for applicator 15×15 cm2 was in the tolerance intervals. However, Surface dose (Ds) increases with increasing energy for both accelerators. Comparisons between the measured and eMC-calculated values revealed that the R100, R90, R80, and R50 values mostly agree within 5 mm. Measured and calculated bremsstrahlung tail Rp correlates well statistically. Ds agrees mostly within 2%. Electron beams were successfully validated for TrueBeam STx®, a good agreement between modeled and measured data was observed.
Role of Glutathione S-transferase Mu 1 and Glutathione S-transferases Theta 1 Polymorphism in the Risk of Developing Type 2 Diabetes Mellitus at Universitas Sumatera Utara Hospital, Medan
Authors: Tala Zaimah Z. , Sari Mutiara Indah 
Published: December 2021

BACKGROUND: Diabetes mellitus is associated with an increased production of reactive oxygen species (ROS) and a reduction in antioxidant defense. Glutathione S-transferases (GSTs) is group of multifunction antioxidant enzyme can be used as important biomarkers for DM.. GSTM1, T1 genes variant polymorphism result in decreased or loss of enzyme activity.
AIM: The study aimed to evaluate the role of GSTM1 and GSTT1 gene polymorphism in the risk of developing T2DM.
METHODS: GSTM1 and GSTT1 polymorphisms were genotyped in 87 T2DM patients and 87 healthy control group to analyze their association with T2DM susceptibility by using multiplex Polymerase Chain Reaction (PCR). PCR products were electrophoresed using agarose 2%. Odds ratio (OR) with 95% confidence interval (CI) and P value were calculated using SPSS software (version 21.0).
RESULTS: The genotype distribution of GSTM1 and GSTT1 were not different between T2DM patients and healthy control group (p = 0.542, OR= 0.780, CI 95%=0.350-1.737 and p=0.879, OR=1.047, CI 95%=0.577-1.903). The genotype distribution of combination of GSTM1 and GSTT1 were also not not different between T2DM patients and healthy control group (p = 0.640, OR= 0.640, CI 95%=0.224-1.83 and p=0.551, OR=0.721, CI 95%=0.245-2.120.
CONCLUSION: In summary, this study showed that GSTT1 null, GSTM1 null, the combination of GSTM1 null and GSTT1 null genotype or combination of GSTM1 null and GSTT1 positive (or contrary) did not have any risk of developing T2DM at Universitas Sumatera Utara Hospital, Medan.
La construction de la démocratie dans les banques coopératives
Authors: Allemand Isabelle , Brullebaut Bénédicte , Louis Anne-Sophie , Zenou Emmanuel 
Published: December 2021

Dans un contexte de forte concurrence et soucieuses de se différencier, les banques coopératives cherchent à mettre en avant leur modèle d’origine, dont l’un des principes est le contrôle démocratique par les membres. L’article étudie comment les sociétaires souhaiteraient aujourd’hui que la démocratie se construise dans les banques coopératives et quelles formes de participation répondraient à leurs attentes selon le type de démocratie auquel ils aspirent. L’enquête menée auprès de 859 sociétaires d’une banque française montre que les jeunes actifs et les agriculteurs, artisans, commerçants, chefs d’entreprise expriment des souhaits relevant d’une démocratie directe, leur offrant la possibilité de s’impliquer dans la stratégie, de participer à des comités et d’apporter leur expertise. La démocratie représentative répond aux attentes des plus âgés, satisfaits de déléguer aux administrateurs les décisions stratégiques et peu enclins à s’investir directement. Un troisième groupe attend que la démocratie dans leur banque s’exerce différemment selon les sujets : par leurs représentants pour les questions stratégiques et avec leur participation pour le contrôle. Eux aussi se disent prêts à contribuer à des comités ou des groupes de travail. Les résultats obtenus permettent de proposer une modélisation des attentes des sociétaires qui vient enrichir la littérature académique sur la démocratie dans les coopératives. Ils apportent aussi aux dirigeants des banques coopératives une meilleure connaissance des souhaits de leurs sociétaires en matière de démocratie. Ils montrent la nécessité d’adapter les formes de participation selon le profil des sociétaires et plus globalement de faire évoluer l’expression du modèle coopératif.
La gestion des ressources humaines dans une visée de transformation sociale : trois études de cas de coopératives d’activités et d’emploi
Authors: Ballon Justine , Boudes Mélissa 
Published: December 2021

Dans un contexte de croissance du travail indépendant, les Coopératives d’Activités et d’Emploi (CAE) se singularisent par l’importance qu’elles accordent à l’autonomie dans le travail et la protection sociale de leurs membres, dans un cadre favorisant la coopération. Notre problématique questionne les expérimentations menées par les CAE en matière de gestion des ressources humaines (GRH) prenant en compte ces spécificités. Cette recherche s’appuie sur les résultats d’enquêtes qualitatives complémentaires menées auprès de trois CAE. Théoriquement, nous croisons deux champs de la littérature de la GRH : l’un consacré aux systèmes d’emplois atypiques dans le cadre des mutations à l’œuvre et, l’autre, traitant de sa déclinaison dans les organisations de l’économie sociale et solidaire (OESS). Nous proposons une première définition de la GRH des CAE à partir de la distinction de cinq fonctions auxquelles sont associés des outils de gestion caractéristiques des organisations qui s’inscrivent dans les zones grises de l’emploi et du travail et de l’identité coopérative de cette forme organisationnelle. Nous discutons des tensions qu’il en résulte selon quatre dimensions : l’autonomie dans et par le travail, la formation et les apprentissages, la coopération de production et la régulation de relations complexes. Sur le plan théorique, nous soulignons la nécessité de faire évoluer les outils conceptuels de la GRH pour considérer les formes d’emplois atypiques, qui plus est dans les OESS.