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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">RUDN Journal of Sociology</journal-id><journal-title-group><journal-title xml:lang="en">RUDN Journal of Sociology</journal-title><trans-title-group xml:lang="ru"><trans-title>Вестник Российского университета дружбы народов. Серия: Социология</trans-title></trans-title-group></journal-title-group><issn publication-format="print">2313-2272</issn><issn publication-format="electronic">2408-8897</issn><publisher><publisher-name xml:lang="en">Peoples’ Friendship University of Russia named after Patrice Lumamba</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="publisher-id">37276</article-id><article-id pub-id-type="doi">10.22363/2313-2272-2023-23-4-825-838</article-id><article-id pub-id-type="edn">HYQPFP</article-id><article-categories><subj-group subj-group-type="toc-heading" xml:lang="en"><subject>Contemporary society: the urgent issues and prospects for development</subject></subj-group><subj-group subj-group-type="toc-heading" xml:lang="ru"><subject>Современное общество: актуальные проблемы и перспективы развития</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">Interdisciplinary study of the medium-term fertility trend in Latvia (1970-2022)</article-title><trans-title-group xml:lang="ru"><trans-title>Междисциплинарное исследование среднесрочного тренда рождаемости в Латвии (1970-2022 годы)</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Menshikov</surname><given-names>V.</given-names></name><name xml:lang="ru"><surname>Меньшиков</surname><given-names>Владимир</given-names></name></name-alternatives><bio xml:lang="ru">доктор социологии, профессор Института гуманитарных и социальных наук</bio><email>vladimirs.mensikovs@du.lv</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Kudins</surname><given-names>J.</given-names></name><name xml:lang="ru"><surname>Кудиньш</surname><given-names>Янис</given-names></name></name-alternatives><bio xml:lang="ru">доктор социальных наук, доцент кафедры экономики</bio><email>janis.kudins@du.lv</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Kokarevica</surname><given-names>A.</given-names></name><name xml:lang="ru"><surname>Кокаревича</surname><given-names>Анита</given-names></name></name-alternatives><bio xml:lang="ru">доктор наук в экономике и предпринимательстве, доцент кафедры общественного здоровья и эпидемиологии</bio><email>anita.kokarevica@rsu.lv</email><xref ref-type="aff" rid="aff2"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Komarova</surname><given-names>V.</given-names></name><name xml:lang="ru"><surname>Комарова</surname><given-names>Вера</given-names></name></name-alternatives><bio xml:lang="ru">доктор экономики, ведущий исследователь Института гуманитарных и социальных наук</bio><email>vera.komarova@du.lv</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Cizo</surname><given-names>E.</given-names></name><name xml:lang="ru"><surname>Чижо</surname><given-names>Эдмунд</given-names></name></name-alternatives><bio xml:lang="ru">доктор наук в экономике и предпринимательстве, доцент кафедры экономики факультета социальных наук</bio><email>edmunds.cizo@du.lv</email><xref ref-type="aff" rid="aff1"/></contrib></contrib-group><aff-alternatives id="aff1"><aff><institution xml:lang="en">Daugavpils University</institution></aff><aff><institution xml:lang="ru">Даугавпилсский университет</institution></aff></aff-alternatives><aff-alternatives id="aff2"><aff><institution xml:lang="en">Riga Stradins University</institution></aff><aff><institution xml:lang="ru">Рижский университет им. Страдыня</institution></aff></aff-alternatives><pub-date date-type="pub" iso-8601-date="2023-12-15" publication-format="electronic"><day>15</day><month>12</month><year>2023</year></pub-date><volume>23</volume><issue>4</issue><issue-title xml:lang="en">VOL 23, NO4 (2023)</issue-title><issue-title xml:lang="ru">ТОМ 23, №4 (2023)</issue-title><fpage>825</fpage><lpage>838</lpage><history><date date-type="received" iso-8601-date="2023-12-30"><day>30</day><month>12</month><year>2023</year></date></history><permissions><copyright-statement xml:lang="en">Copyright ©; 2023, Menshikov V., Kudins J., Kokarevica A., Komarova V., Cizo E.</copyright-statement><copyright-statement xml:lang="ru">Copyright ©; 2023, Меньшиков В., Кудиньш Я., Кокаревича А., Комарова В., Чижо Э.</copyright-statement><copyright-year>2023</copyright-year><copyright-holder xml:lang="en">Menshikov V., Kudins J., Kokarevica A., Komarova V., Cizo E.</copyright-holder><copyright-holder xml:lang="ru">Меньшиков В., Кудиньш Я., Кокаревича А., Комарова В., Чижо Э.</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-nc/4.0</ali:license_ref></license></permissions><self-uri xlink:href="https://journals.rudn.ru/sociology/article/view/37276">https://journals.rudn.ru/sociology/article/view/37276</self-uri><abstract xml:lang="en"><p style="text-align: justify;">The article aims at identifying the medium-term fertility trend in Latvia. The main research question is whether it is possible in the near future to increase fertility in Latvia, as planned in the “Strategy for the Reproduction of the Nation FAMILY - LATVIA - 2030 (2050)”. The authors conducted the mathematical analysis of fertility in Latvia for the medium-term period of 1970-2022 (53 years), which includes two decades of the so-called “Soviet era” and the period of independence after the collapse of the USSR. The study is based on the available data of the official Latvian statistics on the total fertility rate. The novelty of this interdisciplinary - demographic, economic and sociological - study is determined by the use of mathematical analysis to identify demographic trends, which is not typical for the publications of Latvian and foreign researchers. The study is also based on the theory of economic cycles to identify demographic fertility cycles and their phases in Latvia and to predict fertility rates in Latvia for the near future. Furthermore, the analysis of the sociological surveys data allowed to understand the main reason for the steady - in the medium-term perspective - linear decline in fertility in Latvia. This reason is value changes in the society, in which children are no longer at the center of the life value system of men and especially women in Latvia, i.e., are no longer considered necessary for the realization of their life goals and ambitions. Based on the results of the mathematical analysis of the medium-term fertility trend in Latvia, the authors believe that the decline in fertility in Latvia will continue for several more years before the bottom of the next demographic fertility cycle will be reached (and this bottom will be lower than the previous one, i.e., below 1.22 -1.25), and there will be an upturn in a linearly declining fertility trend. However, even this expected rise will not reach the previous peak; the next peak is likely to be below 1.74. Thus, the desired and even expected by the creators of the “Strategy for the Reproduction of the Nation” increase in fertility in Latvia to the level of 1.77 by 2027 is considered by the authors unattainable.</p></abstract><trans-abstract xml:lang="ru"><p style="text-align: justify;">Цель статьи - оценка среднесрочного тренда рождаемости в Латвии. Основной исследовательский вопрос - возможно ли в ближайшем будущем повышение уровня рождаемости в Латвии согласно планам «Стратегии воспроизводства населения СЕМЬЯ - ЛАТВИЯ - 2030 (2050)»? Авторы провели математический анализ показателей рождаемости в Латвии за среднесрочный период 1970-2022 годов (53 года), который включает в себя так называемую «советскую эпоху» и последовавшие за ней десятилетия независимости Латвии после распада СССР. Эмпирическую базу исследования сформировали общедоступные данные официальной латвийской статистики о суммарном коэффициенте рождаемости. Новизна данного междисциплинарного - демографического, экономического и социологического - проекта обусловлена применением математического анализа для изучения демографических трендов, что почти не встречается в публикациях латвийских и зарубежных исследователей, а также использование теории экономических циклов для определения демографических циклов рождаемости и их фаз в Латвии - в целях прогнозирования уровня рождаемости в стране на ближайшее будущее. Кроме того, анализ данных социологических опросов помог авторам понять основную причину устойчивого в среднесрочном периоде линейного падения рождаемости в Латвии - это изменение ценностных доминант общества, вследствие чего ребенок больше не находится в центре системы ценностей мужчин и особенно женщин, больше не считается краеугольным камнем жизненной самореализации. По результатам математического анализа среднесрочного тренда рождаемости авторы высказывают предположение, что спад рождаемости в Латвии будет продолжаться еще несколько лет, прежде чем будет достигнуто дно очередного демографического цикла (его показатель будет ниже предыдущего, т.е. ниже 1,22-1,25) и наметится тенденция роста рождаемости в рамках линейно снижающегося общего тренда. Но и этот ожидаемый подъем не достигнет предыдущего пика (скорее всего будет ниже 1,74). Таким образом, желаемое и даже прогнозируемое создателями «Стратегии воспроизводства населения» повышение рождаемости в Латвии до уровня 1,77 к 2027 году авторы считают совершенно недостижимым.</p></trans-abstract><kwd-group xml:lang="en"><kwd>fertility</kwd><kwd>total fertility rate</kwd><kwd>mathematical analysis</kwd><kwd>demographic cycles</kwd><kwd>economic cycles</kwd><kwd>value system changes</kwd><kwd>Latvia</kwd></kwd-group><kwd-group xml:lang="ru"><kwd>рождаемость</kwd><kwd>суммарный коэффициент рождаемости</kwd><kwd>математический анализ</kwd><kwd>демографические циклы</kwd><kwd>экономические циклы</kwd><kwd>изменения ценностной системы</kwd><kwd>Латвия</kwd></kwd-group><funding-group/></article-meta></front><body></body><back><ref-list><ref id="B1"><label>1.</label><mixed-citation>Adhia N. Some demographic trends in the world’s most populous country-to-be. 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