Simulation of adverse factors of mining production influence on stomatological health of mining workers

Glazunov O. A. Simulation of adverse factors of mining production influence on stomatological health of mining workers. Journal of Education, Health and Sport. 2017;7(5):552-561. eISSN 2391-8306. DOI http://dx.doi.org/10.5281/zenodo.806078 http://ojs.ukw.edu.pl/index.php/johs/article/view/4527 The journal has had 7 points in Ministry of Science and Higher Education parametric evaluation. Part B item 1223 (26.01.2017). 1223 Journal of Education, Health and Sport eISSN 2391-8306 7 © The Author (s) 2017; This article is published with open access at Licensee Open Journal Systems of Kazimierz Wielki University in Bydgoszcz, Poland Open Access. This article is distributed under the terms of the Creative Commons Attribution Noncommercial License which permits any noncommercial use, distribution, and reproduction in any medium, provided the original author(s) and source are credited. This is an open access article licensed under the terms of the Creative Commons Attribution Non Commercial License (http://creativecommons.org/licenses/by-nc/4.0/) which permits unrestricted, non commercial use, distribution and reproduction in any medium, provided the work is properly cited. This is an open access article licensed under the terms of the Creative Commons Attribution Non Commercial License (http://creativecommons.org/licenses/by-nc/4.0/) which permits unrestricted, non commercial use, distribution and reproduction in any medium, provided the work is properly cited. The authors declare that there is no conflict of interests regarding the publication of this paper. Received: 05.05.2017. Revised: 23.05.2017. Accepted: 31.05.2017. SIMULATION OF ADVERSE FACTORS OF MINING PRODUCTION INFLUENCE ON STOMATOLOGICAL HEALTH OF MINING WORKERS O. A. Glazunov State institution "Dnepropetrovsk Medical Academy of the Ukrainian Ministry of Health Care" Abstract Mathematical modeling of the unfavorable mining factors influence with the help of basic dental indices such as CPITN, PMA, KPU has been carried out. The relationship of these indices with the adverse effect of mining on the dental health of miners was has been established. It has been revealed that with accumulation of job seniority, paraclinical indices negatively change significantly. Key words: mathematical modeling, dental indices, mining production

Professional adaptation of college students

In the article the basic problems of professional orientation, provides a system of professional adaptation of college students, grounded principles and basic elements of system of professional adaptation of college studentsРассмотрены основные проблемы профориентации, предложена система профадаптации студентов колледжа, обоснованы принципы ее построения и основные элемент

Mathematical modeling of plumes impingement on landing site of "ExoMars" landing platform

This paper presents the results of numerical studies of the interaction of underexpanded four supersonic plumes with surfaces. The final stage of controlled landing of “ExoMars” landing platform on the surface of Mars is considered. The altitude of landing platform from 1 to 0.3 meter above the surface of Mars and the thrust level of the propulsion system is varied. The distributions of the parameters of gas near landing platform are obtained during operation of propulsion system at the minimum and maximum thrust. The ground effect lift loss under Mars conditions for given configuration landing platform is investigated. The insignificant of ground effect lift loss at altitude 1 meter was found and value of lift loss varied from 1 % to 3% depending on level of propulsion system thrust. For another altitudes, received significant effect of external pressure on the bottom surface of landing platform. The magnitude of this external pressure reached 26% of the maximum thrust of propulsion system

Methodological Variation of the Synthetic Paradigm in the Study of Thanatological Aspects of Modern Religious Mythology

Статья поступила в редакцию 15.07.2024; одобрена после рецензирования 30.07.2024; принята к публикации 15.08.2024.The article was submitted 15.07.2024; approved after reviewing 30.07.2024; accepted for publication 15.08.2024.Автор предлагает разработать новый подход к решению проблем изучения танатологических элементов современной религиозной мифологии. Данное исследование проводится в рамках относительно новой религиоведческой дисциплины, известной как религиозная мифология. Для достижения цели данного исследования процесс разработки метода разделен на три этапа: 1) раскрытие познавательного потенциала синтетической парадигмы Даниила Валентиновича Пивоварова; 2) создание теоретических основ метода; 3) определение алгоритма работы метода. Результаты этого исследования представляют собой новый метод, который выводит танатологию за пределы ее естественно-научных рамок, а также признает сакральное и этическое значение смерти в человеческом существовании, что является актуальным направлением для религиоведческих исследований и религиозной танатологии.The author proposes to develop a new approach to addressing problems within the study of thanatological elements of contemporary religious mythology. This research is conducted within the scope of a relatively new religious studies discipline known as religious mythology. To accomplish the purpose of this study, the method formulation process is divided into three phases: 1) Uncovering the cognitive potential of the synthetic paradigm of Daniil Valentinovich Pivovarov; 2) Establishing the theoretical foundations of the method; 3) Defining the algorithm of the method. The results of this study represent a new method that takes thanatology beyond its natural scientific boundaries and recognizes the sacral and ethical significance of death in human existence, which are relevant areas for religious studies and religious thanatology

Collaborative interpretation of the data obtained by resistivity and ground penetrating radar methods for assessing the permeability of sandy clay soils

A method for estimating the filtration factor of sandy clay soils is considered on the basis of a joint interpretation of the data of a set of methods of engineering electrical exploration, including electrical resistivity tomography and ground penetrating radar studies. The solution of this problem is based on the use of known empirical connections between the imaginary and real parts of the complex dielectric permittivity, specific electrical resistance, and Q factor. An example of the effective joint use of the ground penetrating radar and non-contact electrical resistivity tomography shows how to obtain qualitative and quantitative estimates of a changing filtration factor in a draining road layer. It is necessary to use precise engineering geological information in order to provide the required estimates. The proposed approach makes it possible to describe continuous profiles of a pavement and underlying layers by ground penetrating radar and electrical resistivity tomography, as well as to assess soil properties when conducting an electrical survey from the surface of asphalt concrete pavement. Recommendations for the implementation of the developed methods of complex engineering and geophysical research are given for solving issues of repair work design, supervision, and quality control of road construction

Characterizing Polarization-MIMO Antennas in Random-LOS Propagation Channels

Abstract-In the 5G system, we foresee the use of LOSdominated mm-wave radio links to moving users being subject to slow fading resulting from the users' random locations and orientations. We refer to this as a Random-LOS channel. MIMO processing algorithms will be used in 5G to improve performance in slow fading, similar to how they are used in Rayleigh fading. To this end, we study the probability of detection (PoD) in the Random-LOS channel when there are dual-polarized antennas on both sides of the link. We introduce two polarization deficiencies: the polarization non-orthogonality and the amplitude imbalance between the ports of a two-port antenna. The MIMO efficiency is evaluated as a function of these deficiencies. In the analysis, we consider the MRC algorithm for one bitstream, and the ZF and SVD algorithms for two bitstreams. We also present two analytical formulas for the MIMO efficiency that can be used to determine performance. We use the formulas on two ideally orthogonal dipoles, and show by means of coverage plots how much the 1-and 2-bitstream performances degrade due to the polarization deficiencies in off-boresight directions

Mathematical investigation of pressure pulsations characteristics and natural acoustic frequencies in the gas-dynamic channel

Paper presents a numerical simulation of the occurrence of flow instability and pressure self-oscillations for a complex configuration of the gas-dynamic tract in combustion chamber. Unsteady axisymmetric two-dimensional Navier-Stokes equations are used for mathematical modelling of compressible one-phase medium. To simulate turbulence, the k-ε and LES models were used. Fast Fourier Transform (FFT) determined the frequency spectrum of pressure pulsations in the combustion chamber. It is shown that in the case of a simple geometry of the free gas cavity in combustion chamber, both models of turbulence make it possible to determine the spectrum of the natural acoustic frequencies. Using the LES model in the case of complex geometry makes it possible to predict the hydrodynamic structure of a flow accurately. The flow, in this case, has an intensive vortex generation. Formation of small-scale vortex occurs in the near-wall regions and large eddies in the core of a flow. Frequency of large eddies formation can be combined with the natural acoustic frequencies of combustion chamber and can affect the amplitude of pressure pulsation

The Model of Birch-Spruce Plantations Formation in the Conditions of the Russian Plain Southern Taiga

The results of 30 years or research on the formation and growth of birch forests from the subcanopy spruce population in the conditions of the Russian Plain southern taiga are presented. The studies have been carried out on 19 permanent sample plots (PSPs). They were laid in regionally representative sorrel-blueberry birch forests aged 15–115 years with high density and productivity. The birch plantations on the PSPs belong to the same natural age series. The majority of spruce trees appeared under the canopy of birch forests up to 40 years old. As the birch trees aged, the age structure of spruce trees changed from even-aged to conditionally even-aged. Based on the study of the dynamics of the number of trees, the vertical structure of stands, the growing stock and the total stem wood stock, the age stages of development of the spruce population in the birch forests up to 120 years old have been determined. They are regeneration, young growth, polewood and maturation. The end of the maturation stage occurs at the birch tree age of 120 years. At the same time, the average spruce tree age in the first and second layers is 90 years. The duration of the stages varies from 10 years (the young growth stage) to 40 years (the regeneration and maturation stages). To determine the time of onset and end of other age stages of the subcanopy spruce population, the studies in birch forests older than 120 years are needed. The work performed has made it possible to propose a model of the joint formation of birch forests and the subcanopy spruce population, in which the main taxation characteristics are given for all elements of the stand: age, number of trees, the sum of the cross-section of the stems, the stock of the growing and dead wood, as well as total productivity. According to the model, by the age of a birch of 120 years, the total productivity of modal plantations will be about 950 m3/ha and the growing stock of the stand will be about 490 m3/ha. The share of spruce wood will be 28 % or about 150 m3/ha. After the birch forest decay, a low-density spruce forest of the 3rd quality class can form in its place