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<article 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" xmlns:ali="http://www.niso.org/schemas/ali/1.0/" article-type="research-article" dtd-version="1.2" xml:lang="en"><front><journal-meta><journal-id journal-id-type="publisher-id">Lesnoy Vestnik / Forestry Bulletin</journal-id><journal-title-group><journal-title xml:lang="en">Lesnoy Vestnik / Forestry Bulletin</journal-title><trans-title-group xml:lang="ru"><trans-title>Лесной вестник / Forestry Bulletin</trans-title></trans-title-group></journal-title-group><issn publication-format="print">2542-1468</issn><publisher><publisher-name xml:lang="en">Eco-Vector</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="publisher-id">706785</article-id><article-id pub-id-type="doi">10.18698/2542-1468-2024-2-136-149</article-id><article-categories><subj-group subj-group-type="toc-heading" xml:lang="en"><subject>Forest engineering</subject></subj-group><subj-group subj-group-type="toc-heading" xml:lang="ru"><subject>Лесоинженерное дело</subject></subj-group><subj-group subj-group-type="article-type"><subject>Research Article</subject></subj-group></article-categories><title-group><article-title xml:lang="en">Results of harvester simulated service test during selective logging</article-title><trans-title-group xml:lang="ru"><trans-title>Результаты имитационного моделирования работы харвестера при выборочных рубках леса</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Sergeeva</surname><given-names>Tat’yana V.</given-names></name><name xml:lang="ru"><surname>Сергеева</surname><given-names>Татьяна Владиславовна</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>pg.</p></bio><bio xml:lang="ru"><p>аспирант</p></bio><email>sergeeva2010t@mail.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Gilyazova</surname><given-names>Tat’yana A.</given-names></name><name xml:lang="ru"><surname>Гилязова</surname><given-names>Татьяна Аркадьевна</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>pg.</p></bio><bio xml:lang="ru"><p>аспирант</p></bio><email>tat-gilyazova@yandex.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Rukomoynikov</surname><given-names>Konstantin P.</given-names></name><name xml:lang="ru"><surname>Рукомойников</surname><given-names>Константин Павлович</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>Dr. Sci. (Tech.), Professor of the Department of Forestry and chemical technologies of the Institute of forest and nature management</p></bio><bio xml:lang="ru"><p>д-р техн. наук, проф. кафедры лесопромышленных и химических технологий института леса и природопользования</p></bio><email>rukomojnikovkp@volgatech.net</email><xref ref-type="aff" rid="aff1"/></contrib></contrib-group><aff-alternatives id="aff1"><aff><institution xml:lang="en">Volga State University of Technology</institution></aff><aff><institution xml:lang="ru">ФГБОУ ВО «Поволжский государственный технологический университет»</institution></aff></aff-alternatives><pub-date date-type="pub" iso-8601-date="2024-04-15" publication-format="electronic"><day>15</day><month>04</month><year>2024</year></pub-date><volume>28</volume><issue>2</issue><issue-title xml:lang="en"/><issue-title xml:lang="ru"/><fpage>136</fpage><lpage>149</lpage><history><date date-type="received" iso-8601-date="2026-04-26"><day>26</day><month>04</month><year>2026</year></date><date date-type="accepted" iso-8601-date="2026-04-26"><day>26</day><month>04</month><year>2026</year></date></history><permissions><copyright-statement xml:lang="en">Copyright ©; 2024, Sergeeva T.V., Gilyazova T.A., Rukomoynikov K.P.</copyright-statement><copyright-statement xml:lang="ru">Copyright ©; 2024, Сергеева Т.В., Гилязова Т.А., Рукомойников К.П.</copyright-statement><copyright-year>2024</copyright-year><copyright-holder xml:lang="en">Sergeeva T.V., Gilyazova T.A., Rukomoynikov K.P.</copyright-holder><copyright-holder xml:lang="ru">Сергеева Т.В., Гилязова Т.А., Рукомойников К.П.</copyright-holder><ali:free_to_read xmlns:ali="http://www.niso.org/schemas/ali/1.0/"/><license><ali:license_ref xmlns:ali="http://www.niso.org/schemas/ali/1.0/">https://creativecommons.org/licenses/by/4.0</ali:license_ref></license></permissions><self-uri xlink:href="https://journals.eco-vector.com/2542-1468/article/view/706785">https://journals.eco-vector.com/2542-1468/article/view/706785</self-uri><abstract xml:lang="en"><p>The currently existing mathematical dependencies are aimed only at substantiating the productivity of harvesters and do not allow a detailed analysis of the complexity of individual elements of the cycle time depending on natural and industrial conditions. In this regard, the purpose of this study is to substantiate the mathematical patterns of harvester operation, which allow for rapid technical calculations of productivity and labor costs with a sufficient level of reliability when performing various logging operations. To achieve this goal, a simulation model of harvester operation in a logging area was created and experiments were conducted on this model. The results of statistical processing of simulation results are shown. Regression dependencies are proposed for calculating the average hourly productivity of a harvester, as well as for calculating individual elements of its cycle time, created as a result of analyzing the results of a study on a model. The regression dependences of calculating the average time of pointing the manipulator at a growing tree, moving a fallen tree to its processing zone and the average time of moving the harvester between working positions per sawn tree, which have scientific and practical novelty, are determined. It is proved that labor rationing is impossible without taking into account the influence of such indicators on these elements of time as the average volume of whiplash in the cutting area, the proportion of the component being cut down, the forest reserve per hectare and the amount of large undergrowth in the cutting area. Diagrams of changes in the values of cycle time elements in the conditions of a variety of natural and industrial conditions in various forest areas are shown. Based on the conclusions obtained in the article, practical and scientific recommendations have been developed that increase the efficiency of labor rationing in logging operations. The obtained regression models are recommended for analyzing work efficiency and labor rationing when using the Silvatec 8266TH harvester.</p></abstract><trans-abstract xml:lang="ru"><p>Существующие на данный момент математические зависимости нацелены лишь на обоснование производительности харвестеров и не дают возможности детального анализа трудоёмкости зависящих от природно-производственных условий отдельных элементов времени цикла его работы. В связи с этим, целью данного исследования является обоснование математических закономерностей работы харвестера, позволяющих с достаточным уровнем достоверности осуществлять быстрые технические расчёты производительности и трудозатрат при выполнении различных рубок леса. Для достижения поставленной цели создана имитационная модель работы харвестера на лесосеке и проведены эксперименты на этой модели. Показаны результаты статистической обработки результатов имитационного моделирования. Предложены регрессионные зависимости для расчёта средней часовой производительности харвестера, а также расчёта отдельных элементов времени цикла его работы, созданные в результате анализа результатов исследования на модели. Определены регрессионные зависимости расчёта среднего времени наведения манипулятора на растущее дерево, перемещения поваленного дерева в зону его обработки и среднего времени перемещения харвестера между рабочими позициями в расчёте на одно спиленное дерево, обладающие научной и практической новизной. Доказано, что нормирование труда невозможно без учёта влияния на эти элементы времени таких показателей, как средний объём хлыста на лесосеке, доля вырубаемого компонента, запас древесины на гектаре и количество крупного подлеска на лесосеке. Показаны диаграммы изменения значений элементов времени цикла в условиях разнообразия природно-производственных условий на различных лесных участках. На основе полученных в статье выводов, разработаны практические и научные рекомендации, повышающие эффективность нормирования труда на лесосечных работах. Полученные регрессионные модели рекомендуются для анализа эффективности работы и нормирования труда при использовании харвестера Silvatec 8266<sup>ТН</sup>.</p></trans-abstract><kwd-group xml:lang="en"><kwd>simulation</kwd><kwd>logging</kwd><kwd>felling area</kwd><kwd>selective logging</kwd><kwd>statistical processing</kwd><kwd>regression dependence</kwd><kwd>cut-to-length harvesting</kwd></kwd-group><kwd-group xml:lang="ru"><kwd>имитационное моделирование</kwd><kwd>лесозаготовка</kwd><kwd>лесосека</kwd><kwd>выборочные рубки</kwd><kwd>статистическая обработка</kwd><kwd>регрессионная зависимость</kwd><kwd>сортиментная заготовка древесины</kwd></kwd-group><funding-group><award-group><funding-source><institution-wrap><institution xml:lang="ru">Российский научный фонд</institution></institution-wrap><institution-wrap><institution xml:lang="en">Russian Science Foundation</institution></institution-wrap></funding-source><award-id>24-26-00129</award-id></award-group><funding-statement xml:lang="en">This work was financially supported by the Russian Science Foundation grant No. 24-26-00129, https://rscf.ru/project/24-26-00129/</funding-statement><funding-statement xml:lang="ru">Работа выполнена при финансовой поддержке гранта Российского научного фонда № 24-26-00129, https://rscf.ru/project/24-26-00129/</funding-statement></funding-group></article-meta></front><body></body><back><ref-list><ref id="B1"><label>1.</label><citation-alternatives><mixed-citation xml:lang="en">Kunitskaya O.A., Chernutskiy N.A., Derbin M.V., Rudov S.E., Grigor’ev I.V., Grigor’eva O.I. 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