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<article article-type="research-article" dtd-version="1.3" xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xml:lang="ru"><front><journal-meta><journal-id journal-id-type="publisher-id">vdgtu</journal-id><journal-title-group><journal-title xml:lang="ru">Вестник Дагестанского государственного технического университета. Технические науки</journal-title><trans-title-group xml:lang="en"><trans-title>Herald of Dagestan State Technical University. Technical Sciences</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">2073-6185</issn><issn pub-type="epub">2542-095X</issn><publisher><publisher-name>Daghestan State Technical University</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.21822/2073-6185-2024-51-3-25-34</article-id><article-id custom-type="elpub" pub-id-type="custom">vdgtu-1551</article-id><article-categories><subj-group subj-group-type="heading"><subject>Research Article</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="ru"><subject>ЭНЕРГЕТИКА И ЭЛЕКТРОТЕХНИКА</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>ENERGY AND ELECTRICAL ENGINEERING</subject></subj-group></article-categories><title-group><article-title>Математическая модель построения матрицы коэффициентов теплопроводности при низкотемпературном воздействии на многослойный эпидермис биологической ткани</article-title><trans-title-group xml:lang="en"><trans-title>Mathematical model for constructing a matrix of coefficients thermal conductivity under low-temperature influence on the multilayer epidermis of biological tissue</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-1026-3280</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Кудаева</surname><given-names>Ф. Х.</given-names></name><name name-style="western" xml:lang="en"><surname>Kudaeva</surname><given-names>F. Kh.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Кудаева Фатимат Хусейновна, кандидат физико-математических наук, доцент, доцент кафедры прикладной математики и информатики института искусственного интеллекта и цифровых технологий</p><p>360004, г. Нальчик, ул. Чернышевского, 173</p></bio><bio xml:lang="en"><p>Fatimat Kh. Kudaeva, Cand. Sci. (Physical and Mathematical), Assoc. Prof., Assoc. Prof., Department of Applied Mathematics and Computer Science, Institute of Artificial Intelligence and Digital Technologies</p><p>173 Chernyshevsky St., Nalchik 360004</p></bio><email xlink:type="simple">kfatimat@yandex.ru</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Кабардино-Балкарский государственный университет им. Х.М. Бербекова</institution><country>Россия</country></aff><aff xml:lang="en"><institution>H.M. Berbekov Kabardino-Balkar State University</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2024</year></pub-date><pub-date pub-type="epub"><day>01</day><month>10</month><year>2024</year></pub-date><volume>51</volume><issue>3</issue><fpage>25</fpage><lpage>34</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Кудаева Ф.Х., 2024</copyright-statement><copyright-year>2024</copyright-year><copyright-holder xml:lang="ru">Кудаева Ф.Х.</copyright-holder><copyright-holder xml:lang="en">Kudaeva F.K.</copyright-holder><license xml:lang="ru" license-type="creative-commons-attribution" xlink:href="https://creativecommons.org/licenses/by/4.0/" xlink:type="simple"><license-p>Данная работа распространяется под лицензией Creative Commons Attribution 4.0.</license-p></license><license xml:lang="en" license-type="creative-commons-attribution" xlink:href="https://creativecommons.org/licenses/by/4.0/" xlink:type="simple"><license-p>This work is licensed under a Creative Commons Attribution 4.0 License.</license-p></license></permissions><self-uri xlink:href="https://vestnik.dgtu.ru/jour/article/view/1551">https://vestnik.dgtu.ru/jour/article/view/1551</self-uri><abstract><p>Цель. Целью исследования является разработка математической модели построения матрицы коэффициентов теплопроводности при низкотемпературном воздействии на многослойный эпидермис биологической ткани. Метод. Исследование основано на методах термодинамического анализа, натурного и вычислительного моделирования процессов при низкотемпературном воздействии. Результат. Разработана математическая модель матрицы коэффициентов теплопроводности при низкотемпературном воздействии на биологическую ткань. Теплообмен в многослойной среде при низкотемпературном воздействии на биологическую ткань представлен как процесс с дискретным шагом по времени и по координате. Тепловые свойства равномерно распределены по объему слоев биологической ткани. Для воздействия холодом использованы слои эпидермиса биологи ческой ткани, разбитые на равномерные одинаковые ячейки, где площадь ячейки биологической ткани принята равной единице. Вывод. Полученные в настоящей работе результаты могут быть полезны специалистам, которые занимаются задачами моделирования в среде со свободными границами.</p></abstract><trans-abstract xml:lang="en"><p>Objective. The purpose of the study is to develop a mathematical model for constructing a matrix of thermal conductivity coefficients under low-temperature exposure to the multilayer epidermis of biological tissue. Method. The research is based on methods of thermo dynamic analysis, full-scale and computational modeling of processes under low-temperature influence. Result. A mathematical model of the matrix of thermal conductivity coefficients under low-temperature effects on biological tissue has been developed. Heat transfer in a multilayer medium under low-temperature influence on biological tissue is presented as a process with a discrete step in time and coordinate. Thermal properties are evenly distributed throughout the volume of layers of biological tissue. For exposure to cold, layers of the epidermis of biological tissue were used, divided into uniform identical cells, where the cell area of the biological tissue was taken to be equal to one. Conclusion. The results obtained in this work can be useful to specialists who deal with modeling problems with free boundaries.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>задача фазовыми переходами</kwd><kwd>матрица коэффициентов теплопроводности</kwd><kwd>математическая модель</kwd><kwd>биологическая ткань</kwd><kwd>низкотемпературное воздействие</kwd></kwd-group><kwd-group xml:lang="en"><kwd>the problem of phase transitions</kwd><kwd>the matrix of thermal conductivity coefficients</kwd><kwd>mathematical model</kwd><kwd>biological tissue</kwd><kwd>low-temperature exposure</kwd></kwd-group></article-meta></front><back><ref-list><title>References</title><ref id="cit1"><label>1</label><citation-alternatives><mixed-citation xml:lang="ru">Артюхов И.В., Карнаухов А.В. 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