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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">mais</journal-id><journal-title-group><journal-title xml:lang="ru">Моделирование и анализ информационных систем</journal-title><trans-title-group xml:lang="en"><trans-title>Modeling and Analysis of Information Systems</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">1818-1015</issn><issn pub-type="epub">2313-5417</issn><publisher><publisher-name>Yaroslavl State University</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.18255/1818-1015-2015-1-74-84</article-id><article-id custom-type="elpub" pub-id-type="custom">mais-232</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>Оригинальные статьи</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>Articles</subject></subj-group></article-categories><title-group><article-title>О нулях некоторых характеристических квазиполиномов</article-title><trans-title-group xml:lang="en"><trans-title>On the Location of Some Characteristic Quasipolinomial Roots</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>Глызин</surname><given-names>Дмитрий Сергеевич</given-names></name><name name-style="western" xml:lang="en"><surname>Glyzin</surname><given-names>D. S.</given-names></name></name-alternatives><bio xml:lang="ru"><p>канд. физ.-мат. наук,</p><p>150000 Россия, г. Ярославль, ул. Советская, 14</p></bio><bio xml:lang="en"><p>канд. физ.-мат. наук</p><p>Sovetskaya str., 14, Yaroslavl, 150000, Russia</p></bio><email xlink:type="simple">glyzin@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>Кубышкин</surname><given-names>Евгений Павлович</given-names></name><name name-style="western" xml:lang="en"><surname>Kubyshkin</surname><given-names>E. P.</given-names></name></name-alternatives><bio xml:lang="ru"><p>доктор физ.-мат. наук, профессор</p><p>150000 Россия, г. Ярославль, ул. Советская, 14</p></bio><bio xml:lang="en"><p>доктор физ.-мат. наук, профессор</p><p>Sovetskaya str., 14, Yaroslavl, 150000, Russia</p></bio><email xlink:type="simple">kubysh.e@yandex.ru</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>Морякова</surname><given-names>Алёна Романовна</given-names></name><name name-style="western" xml:lang="en"><surname>Moryakova</surname><given-names>A. R.</given-names></name></name-alternatives><bio xml:lang="ru"><p>аспирант,</p><p>150000 Россия, г. Ярославль, ул. Советская, 14</p></bio><bio xml:lang="en"><p>аспирант</p><p>Sovetskaya str., 14, Yaroslavl, 150000, Russia</p></bio><email xlink:type="simple">alyona_moryakova@mail.ru</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Ярославский государственный университет им. П.Г. Демидова</institution><country>Россия</country></aff><aff xml:lang="en"><institution>P.G. Demidov Yaroslavl State University</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2015</year></pub-date><pub-date pub-type="epub"><day>20</day><month>02</month><year>2015</year></pub-date><volume>22</volume><issue>1</issue><fpage>74</fpage><lpage>84</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Глызин Д.С., Кубышкин Е.П., Морякова А.Р., 2015</copyright-statement><copyright-year>2015</copyright-year><copyright-holder xml:lang="ru">Глызин Д.С., Кубышкин Е.П., Морякова А.Р.</copyright-holder><copyright-holder xml:lang="en">Glyzin D.S., Kubyshkin E.P., Moryakova A.R.</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.mais-journal.ru/jour/article/view/232">https://www.mais-journal.ru/jour/article/view/232</self-uri><abstract><p>В работе изучается расположение нулей двух характеристических квазиполиномов, возникающих при изучении дифференциальных уравнений с запаздывающим аргументом: первый — при изучении математической модели генератора электромагнитных колебаний с запаздывающей обратной связью, второй — при изучении системы уравнений Ланга–Кобаяши, которая является известной математической моделью квантового генератора. Для квазиполиномов построена картина D-разбиений в пространстве параметров, выявлены возможные критические случаи. Рассмотрен случай большого запаздывания, который важен для приложений. В этом случае для нулей квазиполиномов получены аналитические зависимости от величины, обратной запаздыванию, и построены равномерные асимптотические формулы.</p></abstract><trans-abstract xml:lang="en"><p>The location of zeros of two characteristic quasi-polynomials arising from studying the differential equations with a retarded argument is considired. The first one originates from the mathematical model of electromagnetic oscillations generator with a delayed feedback, the second one — from the Lang-Kobayashi system that is a well-known mathematical model of a quantum generator. The D-partition figures are presented in a prameter space and possible critical cases are found out. The large delay case important for applications is considered. In this case, for quasi-polinomial roots obtained are the analytical dependencies on a value reciprocal to the delay, and uniform asymptotical formulas are constructed.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>квазиполином</kwd><kwd>метод D-разбиений</kwd><kwd>асимптотическое представление</kwd></kwd-group><kwd-group xml:lang="en"><kwd>quasi-polynomial</kwd><kwd>D-partition method</kwd><kwd>asymptotic representation</kwd></kwd-group><funding-group><funding-statement xml:lang="ru">проект 1875 госзадания на НИР №2014/258</funding-statement></funding-group></article-meta></front><back><ref-list><title>References</title><ref id="cit1"><label>1</label><citation-alternatives><mixed-citation xml:lang="ru">Неймарк Ю.И. Структура D-разбиения пространства квазиполиномов диаграммы Вышнеградского и Найквиста // Доклады АН СССР. 1948. Т.60. С. 1503–1506. [Neymark Yu.I. Struktura D-razbienia prostranstva quasipolinomov diagrammi Vishnegradskogo i Nyquista // Doklady AN SSSR. 1948. T. 60. 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