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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">sustain</journal-id><journal-title-group><journal-title xml:lang="ru">Надежность</journal-title><trans-title-group xml:lang="en"><trans-title>Dependability</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">1729-2646</issn><issn pub-type="epub">2500-3909</issn><publisher><publisher-name>RAMS Journal Limited liability company</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.21683/1729-2646-2024-24-2-16-23</article-id><article-id custom-type="elpub" pub-id-type="custom">sustain-585</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>СИСТЕМНЫЙ АНАЛИЗ В ЗАДАЧАХ НАДЕЖНОСТИ И БЕЗОПАСНОСТИ</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>SYSTEM ANALYSIS IN DEPENDABILITY AND SAFETY</subject></subj-group></article-categories><title-group><article-title>Улучшение алгоритма Дейкстры для оценки характеристик и критического пути проекта</article-title><trans-title-group xml:lang="en"><trans-title>Improving Dijkstra’s algorithm for Estimating Project Characteristics and Critical Path</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Ширипурапу</surname><given-names>Адилакшми</given-names></name><name name-style="western" xml:lang="en"><surname>Siripurapu</surname><given-names>Adilakshmi</given-names></name></name-alternatives><bio xml:lang="ru"><p>PhD, ассистент профессора, Кафедра естественных и гуманитарных наук</p><p>Дуввада, Вишакхапатнам, Андхра-Прадеш</p></bio><bio xml:lang="en"><p>PhD, Assistant Professor</p><p>Duvvada, Visakhapatnam, AP</p></bio><email xlink:type="simple">laxmimaths2008@gmail.com</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Шанкар Наупада</surname><given-names>Рави</given-names></name><name name-style="western" xml:lang="en"><surname>Shankar Nowpada</surname><given-names>Ravi</given-names></name></name-alternatives><bio xml:lang="ru"><p>профессор, Кафедра математики, Институт естественных наук</p><p>Вишакхапатнам, Андхра-Прадеш</p></bio><bio xml:lang="en"><p>Professor</p><p>Duvvada, Visakhapatnam, AP</p></bio><email xlink:type="simple">Drravi68@gmail.com</email><xref ref-type="aff" rid="aff-2"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Шриниваса Рао</surname><given-names>К.</given-names></name><name name-style="western" xml:lang="en"><surname>Srinivasa Rao</surname><given-names>K.</given-names></name></name-alternatives><bio xml:lang="ru"><p>PhD, кафедра организации</p><p>Вишакхапатнам, Андхра-Прадеш</p></bio><bio xml:lang="en"><p>PhD</p><p>Duvvada, Visakhapatnam, AP</p></bio><email xlink:type="simple">skolli2@gitam.edu</email><xref ref-type="aff" rid="aff-3"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Кафедра естественных и гуманитарных наук, Институт информатики им. Вигнана</institution><country>Индия</country></aff><aff xml:lang="en"><institution>Dept. of Basic Science and Humanities, Vignan’s Institute of Information Technology (A)</institution><country>India</country></aff></aff-alternatives><aff-alternatives id="aff-2"><aff xml:lang="ru"><institution>Кафедра математики, Институт естественных наук, Институт техники и управления им. Ганди</institution><country>Индия</country></aff><aff xml:lang="en"><institution>Dept. of Mathematics, Institute of Science, GITAM (Deemed to be University)</institution><country>India</country></aff></aff-alternatives><aff-alternatives id="aff-3"><aff xml:lang="ru"><institution>Кафедра организации, Школа предпринимательства, Институт техники и управления им. Ганди</institution><country>Индия</country></aff><aff xml:lang="en"><institution>Dept. of Operations, GITAM school of Business, GITAM (Deemed to be University)</institution><country>India</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2024</year></pub-date><pub-date pub-type="epub"><day>21</day><month>05</month><year>2024</year></pub-date><volume>24</volume><issue>2</issue><fpage>16</fpage><lpage>23</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Ширипурапу А., Шанкар Наупада Р., Шриниваса Рао К., 2024</copyright-statement><copyright-year>2024</copyright-year><copyright-holder xml:lang="ru">Ширипурапу А., Шанкар Наупада Р., Шриниваса Рао К.</copyright-holder><copyright-holder xml:lang="en">Siripurapu A., Shankar Nowpada R., Srinivasa Rao 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://www.dependability.ru/jour/article/view/585">https://www.dependability.ru/jour/article/view/585</self-uri><abstract><p>В любой отрасли разработка структуры планирования проекта представляет собой сложную техническую задачу, которая включает в себя оценку факторов, ограничивающих выполнение задач по каждому виду работ, и соответствующие инструменты планирования. Любое ограничение влияет на время выполнения работ, эксплуатационные издержки и общую эффективность выполнения проекта. Процессы метода оценки и пересмотра программ (Programme Evaluation Review Technique, PERT) и метода критического пути (Critical Path Method, CPM) побудили многих исследователей изучать возможные способы поиска критических путей и работ в сетевом графике. CPM и PERT пока еще очень далеки от реализации вероятностной среды. Однако подходы на основе искусственного интеллекта, такие как генетический алгоритм, алгоритм Дейкстры и другие, используются для анализа сети в рамках управления проектами. Настоящее исследование призвано помочь менеджеру проекта спланировать график выполнения строительного проекта для определения ожидаемого времени его завершения. В данной исследовательской работе мы описываем метод получения раннего и позднего значений времени критического пути с помощью модифицированного алгоритма Дейкстры с треугольными нечеткими числами. Для поиска оптимального пути для предложенного метода разработаны алгоритмы прохода вперед и назад. Также приведены численные примеры. Результаты моделирования приведены с использованием программы «C». Наконец, проводится сравнение с традиционным методом PERT.</p></abstract><trans-abstract xml:lang="en"><p>Developing a project planning structure for all industries is a technological challenge involving evaluating several restrictions for each activity’s respective task and its planning tools. Any restriction affects the completion time, operating costs, and overall project performance. Programme Evaluation Review Technique (PERT) and Critical Path Method (CPM) processes made many researchers study the possible ways of finding the critical paths and activities in the network. The advancement of the CPM and PERT towards a probabilistic environment is still a long way off. However, Artificial intelligence approaches such as the Genetic Algorithm, Dijkstra’s algorithm, and others are utilized for network analysis within the project management framework. This study is to help the project manager plan schedule for a construction project to determine the expected completion time. In this research paper, we describe a method for obtaining the earliest and latest times of a critical path using modified Dijkstra’s algorithm with triangular fuzzy numbers. Forward pass and backward pass algorithms are designed to find the optimal path for the proposed method. Numerical examples are also illustrated for the same. Simulation results are included by the use of the “C” program. Finally, a comparison is made with the traditional method PERT.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>критический путь</kwd><kwd>алгоритм Дейкстры</kwd><kwd>раннее и позднее время</kwd><kwd>модифицированный алгоритм Дейкстры</kwd><kwd>PERT</kwd></kwd-group><kwd-group xml:lang="en"><kwd>Critical Path</kwd><kwd>Dijkstra’s Algorithm</kwd><kwd>Earliest and latest times</kwd><kwd>modified Dijkstra’s algorithm</kwd><kwd>PERT</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">Библиографический список 1. Chang H., Abraham J.A. CHAN: An efficient critical path analysis algorithm // 1993 European Conference on Design Automation with the European Event in ASIC Design, Paris, France, 22-25 February 1993. Pp. 444-448. DOI: 10.1109/EDAC.1993.386435</mixed-citation><mixed-citation xml:lang="en">Chang H., Abraham J.A. CHAN: An efficient critical path analysis algorithm. 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