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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="en"><front><journal-meta><journal-id journal-id-type="publisher-id">najo</journal-id><journal-title-group><journal-title xml:lang="en">Nanosystems: Physics, Chemistry, Mathematics</journal-title><trans-title-group xml:lang="ru"><trans-title>Наносистемы: физика, химия, математика</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">2220-8054</issn><issn pub-type="epub">2305-7971</issn><publisher><publisher-name>Университет ИТМО</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.17586/2220-8054-2025-16-6-727-736</article-id><article-id custom-type="elpub" pub-id-type="custom">najo-1611</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="en"><subject>MATHEMATICS</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="ru"><subject>МАТЕМАТИКА</subject></subj-group></article-categories><title-group><article-title>Inverse analysis of a loaded heat conduction equation</article-title><trans-title-group xml:lang="ru"><trans-title>Обратный анализ нагруженного уравнения теплопроводности</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-9687-5220</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Балтаева</surname><given-names>У.</given-names></name><name name-style="western" xml:lang="en"><surname>Baltaeva</surname><given-names>U.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Умида Балтаева</p></bio><bio xml:lang="en"><p>Umida Baltaeva – Department of Applied Mathematics and mathematical physics</p><p>Urgench-220100</p></bio><email xlink:type="simple">umida_baltayeva@mail.ru</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-7556-8942</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Агарвал</surname><given-names>П.</given-names></name><name name-style="western" xml:lang="en"><surname>Agarwal</surname><given-names>P.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Правин Агарвал</p></bio><bio xml:lang="en"><p>Praveen Agarwal – Department of Mathematics</p><p>Jaipur-303012</p></bio><email xlink:type="simple">goyal.praveen2011@gmail.com</email><xref ref-type="aff" rid="aff-2"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0009-0003-5079-7150</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Хасанов</surname><given-names>Б.</given-names></name><name name-style="western" xml:lang="en"><surname>Khasanov</surname><given-names>B.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Бобур Хасанов</p></bio><bio xml:lang="en"><p>Bobur Khasanov – Department of Exact sciences</p><p>Khiva</p></bio><email xlink:type="simple">xasanovboburjon.1993@gmail.com</email><xref ref-type="aff" rid="aff-3"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0009-0002-0491-5104</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Хаитбаев</surname><given-names>Х.</given-names></name><name name-style="western" xml:lang="en"><surname>Hayitbayev</surname><given-names>H.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Хамробек Хаитбаев</p></bio><bio xml:lang="en"><p>Hamrobek Hayitbayev – Department of Accounting and General Professional Sciences</p><p>Khiva</p></bio><email xlink:type="simple">hamrohayitboyev073@gmail.com</email><xref ref-type="aff" rid="aff-4"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-7553-9698</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Юбер</surname><given-names>Ф.</given-names></name><name name-style="western" xml:lang="en"><surname>Hubert</surname><given-names>F.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Флоренс Юбер</p></bio><bio xml:lang="en"><p>Florence Hubert – Aix-Marseille Universite</p><p>I2M, Marseille</p></bio><email xlink:type="simple">florence.hubert@univ-amu.fr</email><xref ref-type="aff" rid="aff-5"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="en">Urgench State University<country>Uzbekistan</country></aff></aff-alternatives><aff-alternatives id="aff-2"><aff xml:lang="en">Anand International College of Engineering<country>India</country></aff></aff-alternatives><aff-alternatives id="aff-3"><aff xml:lang="en">Khorezm Mamun Academy<country>Uzbekistan</country></aff></aff-alternatives><aff-alternatives id="aff-4"><aff xml:lang="en">Mamun university<country>Uzbekistan</country></aff></aff-alternatives><aff-alternatives id="aff-5"><aff xml:lang="en">Aix-Marseille Universite<country>France</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2025</year></pub-date><pub-date pub-type="epub"><day>06</day><month>01</month><year>2026</year></pub-date><volume>16</volume><issue>6</issue><fpage>727</fpage><lpage>736</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Baltaeva U., Agarwal P., Khasanov B., Hayitbayev H., Hubert F., 2026</copyright-statement><copyright-year>2026</copyright-year><copyright-holder xml:lang="ru">Балтаева У., Агарвал П., Хасанов Б., Хаитбаев Х., Юбер Ф.</copyright-holder><copyright-holder xml:lang="en">Baltaeva U., Agarwal P., Khasanov B., Hayitbayev H., Hubert F.</copyright-holder><license 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://nanojournal.ifmo.ru/jour/article/view/1611">https://nanojournal.ifmo.ru/jour/article/view/1611</self-uri><abstract><p>This work considers an inverse problem for a heat conduction equation that includes fractional loaded terms and coefficients varying with spatial coordinates. By reformulating the original equation into a system of equivalent loaded integro-differential equations, we establish sufficient conditions ensuring the existence and uniqueness of the solution. The study focuses on determining the multidimensional kernel associated with the fractional heat conduction operator. The approach is based on the contraction mapping principle and the use of Riemann-Liouville fractional integrals, providing a mathematical framework applicable to diffusion processes with spatial heterogeneity and memory effects.</p></abstract><trans-abstract xml:lang="ru"><p>В данной работе исследуется обратная задача для уравнения теплопроводности, содержащего дробные нагруженные члены и коэффициенты, зависящие от пространственных переменных. Путём сведения исходной задачи к эквивалентной системе нагруженных интегро-дифференциальных уравнений получены достаточные условия существования и единственности решения. Предлагаемый подход основан на принципе сжимающего отображения и использовании дробных интегралов Римана–Лиувилля. Разработанный математический аппарат может быть применён для описания диффузионных процессов в средах с пространственной неоднородностью и эффектами памяти.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>уравнение теплопроводности</kwd><kwd>обратная задача</kwd><kwd>дробное исчисление</kwd><kwd>идентификация ядра</kwd><kwd>метод сжимающего отображения</kwd></kwd-group><kwd-group xml:lang="en"><kwd>heat conduction</kwd><kwd>inverse problem</kwd><kwd>fractional calculus</kwd><kwd>kernel identification</kwd><kwd>fixed-point method</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">Matthew R. Hall. Materials for energy efficiency and thermal comfort in bu ildings. 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