title: 1. Содержатся ли в представленных на исследование информационных  материалах  призывы либо обоснование или оправдание необходимости осуществления агрессивных, насильственных, жестоких действий, направленных против человека в связи с его принадлежностью к представителям органов государственной власти Российской Федерации? 2. Содержатся ли в предоставленных на исследование информационных материалах признаки  призыва к враждебным (насильственным) действиям в отношении  группы лиц по признаку принадлежности к представителям органов государственной власти Российской Федерации?

dc.contributor.author

value: Цветова, Наталья Сергеевна

dc.subject

value: Госорганы МВД России

dc.title

description: Отдельные фрагменты исключены из текста опубликованного заключения в целях обеспечения соблюдения требований законодательства


title: Экспертное заключение по информационным материалам запроса ГУ МВД России по г. Санкт-Петербургу и Ленинградской области (Отдельные фрагменты исключены из текста опубликованного заключения в целях обеспечения соблюдения требований законодательства)

dc.contributor.author

value: Фещенко, Лариса Георгиевна

dc.description.abstract

value: Abstract

dc.language.iso

value: ru

dc.subject

value: Госорганы МВД России

dc.type

value: Other

format: Adobe PDF

description: ЭКСПЕРТНОЕ ЗАКЛЮЧЕНИЕ по информационным материалам запроса ГУ МВД России по г. Санкт-Петербургу и Ленинградской области (Отдельные фрагменты исключены из текста опубликованного заключения в целях обеспечения соблюдения требований законодательства)


title: Экспертное заключение по информационный материалам запроса ГУ МВД России по г. Санкт-Петербургу и Ленинградской области

dc.contributor.author

value: Григорьев, Иван Вадимович

dc.description

value: Экспертное заключение по информационным материалам запроса ГУ МВД России по г. Санкт-Петербургу и Ленинградской области (Отдельные фрагменты исключены из текста опубликованного заключения в целях обеспечения соблюдения требований законодательства)

dc.subject

value: Госорганы МВД России


dc.contributor.author

value: Fokeev, Maksim A.

dc.identifier.citation

value: Fokeev M. A. Business models transformation of Russian airlines: Influence of the coronavirus crisis. Vestnik of Saint Petersburg University. Management 21 (2): 284–313.

dc.description.abstract

value:
The article discusses the business-model transformation of Russian airlines in 2020 and for the
first half of 2021 caused by the impact of the COVID-19 pandemic. Research interest in Russian
air transport market is considerable due to its heterogeneity in terms of airline business models,
the level of federal (regional) regulation, passenger traffic on different routes. The theoretical part
of the study analyzes approaches to defining airlines business-model. The pattern of business
model by J. Daft and S. Albers based on a quantitatively defined finite set of carriers’ characteristics
is most appropriate for the objectives of the study. Due to lack of primary data the empirical
part is based on the media coverage of Russian airlines in the period of 2020 and 2021. The data
was verified using text analysis methods in SPSS Modeler and primary data on the operational
activities of airlines. Further, through a series of expert panels, which included representatives
of airports and airlines, the number of carriers’ media coverage was arranged into components
and dimensions of business model. It was found that the actions of Russian and foreign airlines
differed according to the territorial and institutional characteristics of the Russian air transport
market. There was a transition to direct regional flights, the expansion of the customer way and
the competition between carriers based on a set of available services. With the novelty of the
study, the conclusions are limited because the analysis based on media coverage does not reveal
a full range of reactions of airlines, in particular, internal transformations which companies do
not report. The results can serve as a pattern for the formation of industry monitoring of airline
reactions, as well as a starting point for studying the sustainability of changes in the business
models of Russian airlines.

dc.publisher

value: St Petersburg State University

dc.relation.ispartofseries

value: Vestnik of St Petersburg University. Management;Volume 21; Issue 2

dc.subject

value: air passenger market

value: airline business-model

value: air transport market development

value: airline transformation

dc.title

value: Article


dc.contributor.author

value: Бегун, Никита Андреевич

value: Васильева, Екатерина Викторовна

value: Звягинцева, Татьяна Евгеньевна

value: Ильин, Юрий Анатольевич

value: Плисс, Виктор Александрович

value: Родионова, Анастасия Александровна

dc.description

value:
Рекомендовано в качестве литературы по основным образовательным программам СМ.5088.* Фундаментальная математика; СМ.5089.* Фундаментальная механика; СВ.5008.* Механика и математическое моделирование;
СВ.5004.2021 Прикладная математика и информатика; СВ.5213.2022 Прикладная математика, программирование и искусственный интеллект.

dc.description.abstract

value:
Данное пособие посвящено общим вопросам теории систем обыкновенных дифференциальных уравнений и предназначено для студентов второго курса математико-механического факультета СПбГУ, обучающихся по специальностям «Фундаментальная математика», «Фундаментальная механика», «Прикладная математика и информатика», «Математика и компьютерные науки», «Технологии программирования», «Механика и математическое моделирование», «Астрономия».
Пособие составлено на основе лекций по второй части курса «Дифференциальные уравнения», рассчитанной на 14-20 часов (в соответствии с программой курса). Первая часть курса изложена в опубликованном ранее пособии авторов «Дифференциальные уравнения первого порядка. Существование и единственность решений».
Курс «Дифференциальные уравнения» является базовым курсом для студентов вышеперечисленных специальностей. Большая часть материала пособия изложена по конспекту лекций, которые многие годы на математико-механическом факультете СПбГУ (до 1992 года ЛГУ) читал заведующий кафедрой дифференциальных уравнений, профессор Виктор Александрович Плисс.
Теоретический материал, изложенный в пособии, снабжен набором интересных задач, которые предлагаются читателю для самостоятельного решения.
Пособие может быть использовано для проведения лекций, семинарских занятий и проверочных работ на математических, физических и других естественнонаучных факультетах высших учебных заведений.

dc.type

value: Working Paper

filename: Общая теория систем обыкновенных дифференциальных уравнений.pdf


title: ЭКСПЕРТНОЕ ЗАКЛЮЧЕНИЕ по информационным материалам запроса ГУ МВД России по г. Санкт-Петербургу и Ленинградской области (Отдельные фрагменты исключены из текста опубликованного заключения в целях обеспечения соблюдения требований законодательства)

dc.description.abstract

value: Abstract

dc.subject

value: госорганы

value: МВД России

value: информация

value: ч. 1 ст.15.3 Федерального закона от 27.07.2006 №149-ФЗ "Об информации, информационных технологиях и защите информации"

dc.title

filename: заключение 2557.pdf


dc.language.iso

value: ru

dc.subject

value: информационный материал

value: оскорбление в неприличной форме

value: ЭКСПЕРТНОЕ ЗАКЛЮЧЕНИЕ по информационным материалам запроса ГУ МВД России по г. Санкт-Петербургу и Ленинградской области (Отдельные фрагменты исключены из текста опубликованного заключения в целях обеспечения соблюдения требований законодательства)

dc.type

value: Other

filename: заключение 2530.pdf


dc.description

value: Отдельные фрагменты исключены из текста опубликованного заключения в целях обеспечения соблюдения требований законодательства

dc.subject

value: оскорбление

value: представители власти

filename: заключение 2501.pdf


title: ЭКСПЕРТНОЕ ЗАКЛЮЧЕНИЕ по информационным материалам запроса ФСБ России (Отдельные фрагменты исключены из текста опубликованного заключения в целях обеспечения соблюдения требований законодательства)

value: ФСБ России

value: информационный материал

value: побуждение

value: призыв

value: признаки оправдания

value: лингвистические признаки

value: психологические признаки

value: унижение человеческого достоинства

dc.title

filename: заключение 2494 (2).pdf


dc.description.abstract

value: abstract

dc.subject

value: публичное оскробление

value: негативная оценка органов власти

value: при исполнении должностных обязанностей

filename: заключение 2383.pdf


value: признаки побуждения к действиям

value: признаки возбуждения розни (вражды, ненависти)

filename: заключение 2384.pdf


dc.contributor.author

value: Kollantay, Vitaly A. (priest)

value: Kopystko, Petr P. (priest)

dc.identifier.citation

value: Kollantay V. A., Kopystko P. P. Interrogation of a clergyman in evidentiary trial. Issues of Theology, 2022, vol. 4, no. 2, pp. 275–283.

dc.description.abstract

value: The article presents results of an analysis of current legislation of the Russian Federation and the Church law of the Russian Orthodox Church on the legal status of a “clergyman” and their opportunity to testify in criminal proceedings. Taking into account different points of view on this issue, it is substantiated that a clergyman of the Russian Orthodox Church cannot be interrogated as a witness in a criminal case about the circumstances that became known to him during the Sacrament of Penance. The question of the ratio of the concepts of “clergyman” and “priest” fixed at the normative level, but not equal, a pedibus usque ad caput, in essence, is considered. It is indicated that according to the canonical law of the Orthodox Church, the concept of “clergyman” is broader, with its own characteristics, which are dictated by the purpose of a particular degree of priesthood. In the article, the category of witness immunity is considered from the position of its functional orientation. An attempt has been made to substantiate the legal and moral aspects of the right to legal immunity of clergy. An attempt has been made to substantiate the legal and moral aspects of the right to legal immunity of a clergyman, through understanding the impossibility of conducting an interrogation, since this restriction of the subject of testimony is explained by the priority of social values that are protected by the provision of the law.

dc.publisher

value: St Petersburg State University

dc.relation.ispartofseries

value: Issues of Theology;Volume 4; Issue 2

value: clergyman

value: secret of confession

value: legal immunity

value: interrogation

value: sacrament of penance

value: trial

value: investigative action

dc.type

value: Article


title: Editorial

dc.identifier.citation

value: Editorial. Issues of Theology, 2022, vol. 4, no. 2, pp. 192–194.

dc.description.abstract

value: Editorial

dc.language.iso

value: ru


dc.contributor.author

value: Mikhel’, Dmitry V.

value: Reznik, Oleg N.

dc.identifier.citation

value: Mikhel’ D. V., Reznik O. N. Biomedicine and the challenge to Christian values: Orthodox bioethics in the age of biomedical technologies. Issues of Theology, 2022, vol. 4, no. 2, pp. 241–259.

dc.description.abstract

value: For thirty years Russia has been living under the conditions of a market economy, and the age of biomedical technology has coexisted for the same amount of time. The Orthodox community views the progress of biomedicine as a challenge to Christian values that needs adequate ethical reflection and response. The response to this challenge is articulated by Orthodox bioethics, which is a systematic knowledge of the boundaries of permissible biomedical manipulation of human life and death. Orthodox scientists who develop bioethics see their task as protecting human dignity, the traditional family, and other Christian values from the dangers posed by the consequences of the spread of new technologies. Ethical problems associated with the spread of in vitro fertilisation (IVF) technology continue to be of relevance for Orthodox bioethics all these years, since they allow the manipulation of human embryos not as individuals, but as simple biological objects. Some of the bioethical proposals drafted by Orthodox scientists have been paired with criticisms of emerging legal regulations and government decisions aimed at supporting IVF. Equally important to Orthodox bioethics are the problems associated with the development of transplantology, since in Russia the legal framework allows organ donation from a deceased donor based on the presumption of consent. Now, the field of transplantology continues to be regulated by legal norms adopted in the early 1990s, which explains the willingness on the part of Orthodox scientists to challenge some of these norms.

dc.description.sponsorship

value:
The reported study was funded by the Russian Foundation for Basic Research according
to the research project no. 21-011-44043.

dc.subject

value: biomedical technologies

value: Christian values

value: Orthodox bioethics

value: in vitro fertilisation

value: embryos

value: transplantology

value: organ harvesting


dc.contributor.author

value: Karelina, Liubov A.

dc.identifier.citation

value: Karelina L. A. The master’s debate of the sacred Ioann Mansvetov in the Moscow Theological Academy in the context of ecclesiological disputes of the 1870s–1880s. Issues of Theology, 2022, vol. 4, no. 2, pp. 309–326.

dc.description.abstract

value: The dispute about the defense of the master’s thesis is sacred John Mansvetov’s “New Testament Teaching about the Church”, held in 1879, is of interest in the context of ecclesiological discussions in the Russian church periodicals of 1869–1870 and 1882–1884, activated by the posthumous publications of the works of A. S. Khomyakov. His work was prepared under the leadership of an outstanding representative of the domestic academic science of the Moscow Theological Academy Rector Alexandr Vasilyevich Gorsky. His disciples were the opponents of Mansvetov: teachers of the dogmatic department A. D. Belyaev and N. M. Ivantsov. They all listened to the course of dogmatic theology of Archpriest A. V. Gorsky, who analyzed problematic places in the writings of an outstanding lay theologian. The materials of the dispute were not covered in the church periodicals, but the circumstances of the defense partially clarify Belyaev’s diary entries. The ecclesiological ideas of the opponents were set forth in their own works: two articles by N. M. Ivantsov, published in 1877–1878 in the journal Orthodox Review, headed by his brother A. M. Ivantsov-Platonov; and in Belyaev’s master’s thesis “Divine Love”, defended in 1880. The aim of the study is to identify the influences on the views of three young scientists of their famous predecessors-the rector of the Moscow Theological Academy, prot. A. V. Gorsky and A. S. Khomyakov.

dc.description.sponsorship

value:
This article was prepared within the “Russian religious academic theology of the late
nineteenth and early twentieth century: ideas and contexts” project with assistance of St Tikhon’s
Orthodox University and Fund “The live Tradition”.

dc.publisher

value: St Petersburg State University

dc.relation.ispartofseries

value: Issues of Theology;Volume 4; Issue 2

dc.subject

value: ecclesiology in academic theology

value: romantic ecclesiology

value: ecclesiological discussions in periodicals

value: philosophical and historical methodology

value: the Church as the Kingdom of God

value: the earthly and heavenly Church

value: the life of the Church


dc.contributor.author

value: Pismeniuk, Ilia N. (priest)

dc.identifier.citation

value: Pismeniuk I. N. Rapprochement of the Roman Catholic Church and the World Council of Churches in the 1960s: Orthodox attitude to this problem. Issues of Theology, 2022, vol. 4, no. 2, pp. 260–274.

dc.description.abstract

value: In the article, the author talks about the stage of rapprochement between the Roman Catholic Church and the largest ecumenical organization, the World Council of Churches (WCC), at the turn of the 1950s–1960s, as well as about the continuation of interaction between the Vatican and the WCC within the framework of the Joint Working Group. At the initial stage of the World Council of Churches’ history the Roman Catholic Church refused any ecumenical contacts and n reacted negatively to the ecumenical movement. The article explains the reasons that served to change the position of the Roman Catholic Church in relation to the WCC as major ecumenical organization and to the whole ecumenical movement. The author paid special attention to the attitude to this process of the Orthodox Churches that were WCC members. The latter was an important factor, since The WCC was limited in its actions in case of disagreement on any matter between it member churches and the relationship between Catholicism and Orthodoxy was highly complicated during the second millennium. The article provides Orthodoxy representatives’ statements at meetings of the WCC governing bodies permitting the understanding of the origins of the Orthodox position on the issue of interaction between the Vatican and the WCC, as well as general historical assessments on the matter.

dc.description.sponsorship

value:
The reported study was funded by the Russian Foundation for Basic Research, project
no. 21-011-44111.

value: ru

dc.subject

value: ecumenism

value: ecumenical movement

value: catholic

value: Roman Catholic Church

value: Orthodox Church

value: history of Christianity

value: church

value: Protestantism

value: World Council of Churches

value: inter-church relations

dc.type

value: Article


dc.contributor.author

value: Nikulin, Maksim S. (priest)

dc.identifier.citation

value: Nikulin M. S. Noology of Plotinus as an essay of rational theology. Issues of Theology, 2022, vol. 4, no. 2, pp. 209–221.

dc.description.abstract

value: Plotinus’ theology is often viewed from a mystical aspect. He is considered an experienced contemplator rather than a discursive theologian. But recently, works have appeared that reveal moments of the philosopher’s positive theology. Plotinus’ henology is a theology, but the One, being transcendental, excludes any cataphatics. Noology is also a theology, as the philosopher calls the Intellect God. The term “rational theology” may have two meanings, reason and understanding, corresponding to two stages of knowledge of God, empirical and descriptive. In the treatise “On the Knowing Hypostases and That Which is Beyond” Plotinus discusses two ways of cognizing the Intellect, intuitive and discursive. The soul can empirically feel the Intellect, partake in, assimilate to and even become It, but it can also comprehend its experience through understanding (διάνοια, λογιστικόν), since it is connected with the Intellect through the inherent letters (γράμμασιν), laws (νόμοις), rules (κάνοσιν). Psychology may also be viewed as “rational theology”, but not in the sense formed in the context of Christian theology, which is attributed to the term at the present time. In the structure of the Intellect, Plotinus distinguishes the Intelligible — Intellect — Intelligence triad. This triad is close to E. Husserl’s “pure ego” structure, but the phenomenological epistemology is not substantiated, in contrast to the neoplatonic model. Noology could become the ontological ground of modern epistemology, and its theological nature — the foundation of any humanitarian knowledge.

dc.description.sponsorship

value:
The reported study was funded by the Russian Foundation for Basic Research according
to the research project no. 21-011-44178.

dc.publisher

value: St Petersburg State University

dc.relation.ispartofseries

value: Issues of Theology;Volume 4; Issue 2

dc.subject

value: Plotinus

value: Plato

value: noology

value: rational theology

value: philosophical theology

value: neoplatonism

value: triadology

value: henology

value: psychology


dc.contributor.author

value: Silvestrova, Elena V.

dc.identifier.citation

value: Silvestrova E. V. Dissolution of marriage during the spousal lifetime in ecclesiastical law. Issues of Theology, 2022, vol. 4, no. 2, pp. 284–298.

dc.description.abstract

value: The article examines the concept of dissolution of ecclesiastical marriage according to modern legislation of the Russian Orthodox Church. The author studies the origins of this concept, while special attention is paid to secular law. The grounds of dissolution of ecclesiastical marriage are specifically analyzed. The article studies the historical prerequisites for the formation of the Russian Orthodox Church concept of divorce, which determines the grounds for the termination of ecclesiastical marriage during the life of the spouses. The author comes to the conclusion that the idea of ecclesiastical marriage dissolution is consistent in general with eastern orthodox canonical tradition. The influence of the Russian Orthodox Church’s own tradition is of particular importance for the modern concept. At the same time, there are gaps in the modern provisions of ecclesiastical legislation on marriage; e. g., the legislator does not pay sufficient attention to certain new public life phenomena. In addition, the author notes that current legislation of the Russian Orthodox Church does not introduce an obligation of the laity to dissolve an ecclesiastical marriage in connection with certain circumstances considered in Eastern Orthodox canon law as grounds for divorce. The principle of family law of the Russian Orthodox Church is the protection of marriage.

dc.language.iso

value: ru

dc.subject

value: canon law

value: family law

value: divorce

value: ecclesiastical divorce

value: grounds for dissolution of marriage

value: ecclesiastical marriage


dc.contributor.author

value: Iakovov, Daniil V. (priest)

dc.identifier.citation

value: Iakovov D. V. Christianity and the national identity of the Nenets. Issues of Theology, 2022, vol. 4, no. 2, pp. 299–308.

dc.description.abstract

value: The article examines the main features and conditions of the formation of the national identity of the Nenets (the most numerous ethnic group among the indigenous peoples living in the territory of the Yamalo-Nenets Autonomous District) in the context of missionary activity as cross-cultural communication. The mission affects not only beliefs, but also culture, which includes life, nutrition, the form of social relations, symbols and so on. The more deeply the mission actor understands the culture of the addressee, the more effective the missionary service will be. For many Nenets, the adoption of baptism means the rejection of the culture of their people, which will inevitably entail a change of identity, since historically missionaries of different faiths insisted on the destruction of pagan artifacts and a complete break with the previous way of life. Attempts are being made among Orthodox and Protestant missionaries of Yamal to combine traditional culture and the Gospel in order to preserve national identity and increase the effectiveness of preaching. The Protestant campaign differs from the traditional Orthodox mission by desacralization of traditional beliefs through their rational interpretation. Thus, the mission does not lead to the legalization of traditional forms, but to a rethinking of the existing systems of relations. This method is promising, as it allows to rededicate culture in the spirit of the Christian tradition.

dc.publisher

value: St Petersburg State University

dc.relation.ispartofseries

value: Issues of Theology;Volume 4; Issue 2

dc.subject

value: mission

value: national identity

value: identity crisis

value: missionary service

value: indigenous small peoples

value: Nenets

value: Samoyeds

dc.title

value: Article


dc.contributor.author

value: Magomedov, Timur (Muhammad) K.

dc.identifier.citation

value: Magomedov T. K. Tauvil and tafviz as the basic methods of understanding and interpreting unclear texts of the Quran and hadis. Issues of Theology, 2022, vol. 4, no. 2, pp. 222–232.

dc.description.abstract

value: This article discusses the question of what the Muslim understanding of the hadiths (sayings) of the Prophet and the verses of the Koran, referred to in the scientific and theological environment as الآيات و الأحاديث المتشابهات (ambiguous verses and hadiths) should be. These are ambiguous sacred lines that can prompt a person to think about the articulation of Allah, about the possibility of limiting the Creator by space or moving Him, i. e. about the admissibility of some similarity between the Almighty and His creations. A misunderstanding of these hadiths and verses forms a distorted idea of Allah in a person and, under certain conditions, can lead him out of the bosom of Islam, since Monotheism — as the most important basis of Islamic dogma — presupposes the uniqueness of Allah by essence, actions and His attributes (sifats) and His absolute incomparability. The article presents a reasonable true interpretation of these verses of the noble Quran and hadiths. The work affirms the legitimacy and admissibility of tawil (interpretation of an obscure word, that is, the selection of a suitable meaning from the paradigm of the meanings of an obscure word, which corresponds to the rules of the Arabic language and does not indicate a shortcoming in relation to Almighty Allah) as a method in understanding obscure texts of the Quran and hadith.

dc.description.sponsorship

value:
The reported study was funded by the Russian Foundation for Basic Research according
to the research project no. 21-011-44245.

dc.language.iso

value: ru

dc.subject

value: verses of the Quran

value: the hadiths of the Prophet

value: the attributes (sifats) of Allah

value: Islam


dc.contributor.author

value: Prikhodko, Maksim A. (archpriest)

dc.identifier.citation

value: Prikhodko M. A. The structure of an individual soul and the problem of “two minds” in the theology of Philo of Alexandria. Issues of Theology, 2022, vol. 4, no. 2, pp. 195–208.

dc.description.abstract

value:
The teaching of Philo the Alexandrian is a system of the regular intersection of theological
and psychological lines of reasoning. The crucial point for the Judaic thinker
was the rational explanation of religious doctrine. Philo manages to do this using
the Stoics’ concept of soul and its action in the light of allegoric interpretations of
the central points of Genesis, such as the creation of man and the first-fall of the
Progenitors. Philo’s elaboration on the Stoics’ doctrine of the soul reveals the conceptual
model of relationship between God and man based on the communication
between the mind and the senses within a human soul. Philo finds the universal
aspect of the action of an individual mind, whose disposition towards the senses
either links it to the universe and God or closes it within itself and becomes a cause
of vice. Philo uses the Stoics’ distinguishing of an individual mind (hegemonikon)
and the universal logos to state the transitional function of the human mind regarding
God and the universe. In terms of the Stoics’ concept of the rational nature of
impulse, Philo explains man’s responsibility for the appearance of evil as well as the
reason for seeking the cause of the universe and its place there. Thus, Philo shows
the action of an individual soul both in the context of the living processes of the
whole universe and in relation to God.

dc.description.sponsorship

value: The research was supported by the Russian Foundation for Basic Research project no. 21-011-44178 “Formation of rational theology in Antiquity and the early Middle Ages”.

dc.language.iso

value: en

dc.publisher

value: St Petersburg State University

dc.relation.ispartofseries

value: Issues of Theology;Volume 4; Issue 2

value: mind

value: reason

value: soul

value: sense

value: individuality

value: logos

value: Stoicism

value: governing principle

value: hegemonikon

value: universe

value: rational soul

value: irrational soul


dc.contributor.author

value: Nesturov, Said P.

dc.identifier.citation

value: Nesturov S. P. Zakat as a way to overcome poverty in Muslim society. Issues of Theology, 2022, vol. 4, no. 2, pp. 233–240.

dc.description.abstract

value: This article discusses the importance of zakat — a mandatory payment in favor of the poor and the needy — for Muslim society. The author reveals the essence of zakat, designates the categories of Muslims who are obliged to pay it, indicates to whom exactly it is paid, determines from what kind of property and in what order it should be paid. The article briefly and conveniently provides the norms for paying zakat. The pillars of religion, which are obligatory for execution, cannot lose their significance, which determines the relevance of this work, the purpose of which is to bring to the majority of Muslims the legal norms for establishing and paying zakat. The provisions and arguments given in the article are considered on the basis of a comparative analysis of the significance and role of zakat during the time of the Arab Caliphate with the present time. The study is based on the famous book “Fatawa al-Chohiy” by Muhammad Ali al-Chohiy. This book accumulates fatwas collected from more than a hundred books. Most of the legal decisions were taken from the authoritative books of the Shafi school of law (fiqh). Of even greater interest to this book is the diversity of the problems it addresses. The author in his legal opinions answers questions related to the ritual practice of Muslims, issues of trade, as well as issues of property law, while some fatwas answer questions of Muslim dogma.

dc.description.sponsorship

value:
The reported study was funded by the Russian Foundation for Basic Research according
to the research project no. 21-011-44245.

dc.language.iso

value: ru

value: zakat

value: property

value: Quran

value: Sunnah

value: Sharia issues

value: madhhab

value: imams

dc.type

value: Article


dc.contributor.author

value: Biryukova, Yuliya A.

value: Olenich, Tamara S.

value: Shakhbanova, Nataliya A.

dc.identifier.citation

value: Biryukova Yu. A., Olenich T. S., Shakhbanova N. A. The Orthodox clergy of Crimea in the First World War and the Civil War in a new historical study. Issues of Theology, 2022, vol. 4, no. 2, pp. 327–336.

dc.description.abstract

value: This review explores a new study on the history of the Crimean clergy during the First World War and the Civil War, up to the exodus of the white forces from the Crimea in November 1920. The authors of the monograph work at St Petersburg State University: Professor A. S. Puchenkov and Associate Professor V. V. Kalinovsky. The study examines such little-studied issues as the attitude of the clergy as a class and its individual representatives to the war, to politics, to reforms within the Church itself. During the war, the Crimean clergy took a peacemaking position, preventing German pogroms in the Tauride diocese. It should be noted that the revolutionary forces at various levels exercised increased control over the content of the sermons of the clergy, and the new government tried to influence the church authorities and the congresses of the clergy. The Church was perceived by society as a force closely connected with the monarchy. Criticism and hostility towards the Church began to worsen, resulting in open persecution after the October revolution. The authors of the review concluded that the authors managed to create a fundamental work, the absolute merit of which is the reconstruction of church life against the background of socio-political and military upheavals. The authors took a balanced position, without deviating into apologetics or criticism of the clergy. The work disposes to the comprehension of many controversial and complex topics.

dc.description.sponsorship

value:
The reported study was funded by the Russian Foundation for Basic Research, project
no. 21-011-44120 “Orthodox clergy in the South of Russia during the wars and revolutions of the
early twentieth century”.

dc.publisher

value: St Petersburg State University

dc.relation.ispartofseries

value: Issues of Theology;Volume 4; Issue 2

dc.subject

value: historiography

value: clergy

value: military clergy

value: World War I

value: Civil War

value: white movement


dc.contributor.author

value: Cymanow-Sosin, Klaudia

value: Cymanow, Piotr

value: Ciechanowski, Marcin

dc.identifier.citation

value: Cymanow-Sosin K., Cymanow P., Ciechanowski M. (2022). Advertising as an example of media persuasiveness with the use of modern types of narration. Media Linguistics, 9 (2), 126–139.

dc.description.abstract

value:
The purpose of this article is to present the main persuasive function of various types of
narratives based on the analysis of messages designed to influence and impel to make a decision. An additional purpose is to show that different narrative forms were used thoughtfully
based on the research into intended recipient groups. The used methodology of narrative
analysis in relation to media messages, the function of which is persuasion, was created on
the basis of the methodology of content analysis in mediametric studies of the discipline of
social communication and media, as well as related sciences, for example, visual, linguistic
or semiological analysis. The relevance of the study is confirmed by the use of fresh material
taken from current ratings conducted by network analysts regarding the most popular
advertising messages in the Internet space and modern tools in the field of neuroscience.
This made it possible to single out such types of narratives as cathectic, storytelling, celebrity,
gaming and amplified narratives. Among the analyzed messages, including commercials
and social campaigns, the authors highlight their distinctive features and ways of
using them in the field of language and images, which makes it possible to categorize any
multimodal persuasive messages, and facilitates the interpretation of this type of messages.
Demonstrating the persuasiveness of the narrative as an integral feature of all messages in
advertising communication leads to the conclusion that the purpose of using the narrative
is to create tension and dynamics that strongly affect the viewer. Ultimately, the reason for
its use is not only a reference, but also a description of the world. The narrative also has
significant axiological and philosophical goals.

dc.language.iso

value: ru

dc.relation.ispartofseries

value: Media Linguistics;Volume 9; Issue 2

dc.subject

value: analysis

value: narrative

value: impact

value: advertising

value: values


dc.contributor.author

value: Campos, Fred L. S.

value: Baturina, Ludmila I.

value: Azevedo, Beatriz M.

dc.identifier.citation

value: Campos F. L. S., Baturina L. I., Azevedo B. M. (2022). Brazilian media narrative about Russia: Construction of reality and correlation with American media. Media Linguistics, 9 (2), 140– 166.

dc.description.abstract

value:
The authors discuss the cultural and psychological aspects of media reality within the framework
of constructivism, and trace the nature of the information flow about Russia in Brazil over time.
The article examines the form and content of the Brazilian press narration about the Russian
Federation for the period of 53 years, from 1968 to 2021, on the example of one of the main and
widely distributed periodicals: “Veja” magazine. The authors analyze its cover content as a polycode
text, and subsequent articles. The study used the methods of narrative analysis, and methods
of linguacultural interpretation of linguistic features. The study carried out a comparative
analysis of the covers of “Veja” magazine with the covers and articles of the leading American
magazine “Time”, corresponding in terms of time and subject matter of the articles. This comparison
demonstrated a direct correlation between the way Russia was described in the Brazilian
press and the Western media in terms of style and form of presenting information. It allowed the
authors to speak about the influence of American hegemonic press on the Brazilian media narration.
The correlation of the polycode texts has proved the use of the cognitive functions of the
visual media language in politically dependent media spaces. The 53-year period taken for the
analysis showed that over such a long timeline with multiple events both in Russia and Brazil, as
well as in the whole world, including the emergence of the BRICS, the Brazilian media narration
has not changed and continued to follow the American mainstream.

dc.subject

value: image of Russia

value: Brazil

value: media reality

value: narration

dc.title

value: Article


dc.contributor.author

value: Bykova, Elena V.

dc.identifier.citation

value: Bykova E. V. (2022). Medialinguistic studies of PR-speech: Domestic experience. Media Linguistics, 9 (2), 79–95.

dc.description.abstract

value:
The article provides an overview of Russian articles on media linguistics. In the articles, PRspeech
is described in terms of media linguistics. The purpose of the article is to present a
spheral approach to the study of PR activities. PR-speech is described as an applied communication
technology that serves the administrative, economic, socio-cultural, commercial
and political activities of subjects in a highly competitive media environment. In the article,
the types of PR-discourses are identified by induction, their typological and genre forms are
defined. The review showed that the PR media style is determined by extralinguistic factors
of political, commercial or cultural and educational activities, the content and subject of publications,
the goals of communication, and the forms of communication with the addressee.
PR-discourse can be divided into four types: administrative-economic, political, commercial
and cultural-educational. Each discourse has a specific genre-typological system, which helps
to optimize communication between the customer and the performer in the implementation
of the contract and is an indicator of the effectiveness of communication in a professional
environment. The author comes to the conclusion that the metalanguage of PR-speech in the
categories of media linguistics demonstrates stability and proves that the institutionalization
of this direction in the field of education and professional activity has taken place and is included
in the register of scientific specialties “Media Communications and Journalism”.

dc.language.iso

value: ru

dc.publisher

value: St Petersburg State University

dc.subject

value: PR-discourse

value: PR-speech

value: sphere approach

value: speech practice

value: media linguistics


dc.contributor.author

value: Kaminskaia, Tat’iana L.

value: Erokhina, Oksana V.

dc.identifier.citation

value: Kaminskaia T. L., Erokhina O. V. (2022). Media crowdsourcing and media crowdfunding in the digital environment as factors of a new community for the media. Media Linguistics, 9 (2), 96–112.

dc.description.abstract

value:
The article studies the financial and content participation of the addressee in the implementation
of media projects through special digital platforms. Successful experience of media
crowdfunding is associated with such digital platforms as Planeta.ru, BoomStarter, “The Power
of the Word”, and active crowdsourcing is carried out on the digital Service of journalistic
queries (https://pressfeed.ru/). Crowdfunding and crowdsourcing in Russia as a collective cooperation
of people and civic activity are most effective today in the sphere of media. Through
such civil complicity, a media community is formed. As a result, the following factors of the
success of media crowdfunding and crowdsourcing were identified: 1. Addressing the focus
audience of media projects; 2. Rewards for participation, including virtual participation, that
meet the needs of the audience; 3. Types of motivations of the audience to cooperate with
media: the desire to express a civic position, to be involved in something socially significant,
to increase their expertise and make their personal story public. The article describes all these
factors with their illustration by examples of media projects and the individual expert practice
of one of the authors of the article. A decline in the role of the state in a digital society
inevitably leads to a change in the functioning of media, as well as to a growing importance of
communities that arise around media projects. Digital involvement of the audience in financing and content participation gives the effect of a media community which is necessary for
independent and highly specialized media. It is noted that sometimes exotic projects with a
narrow target audience demonstrate success in fundraising due to the skillful use of specific
vocabulary and personal authority of the creators. Digital platforms, boosted during the pandemic,
are transforming media-audience relationships.

dc.relation.ispartofseries

value: Media Linguistics;Volume 9; Issue 2

value: media content

value: crowdfunding

value: crowdsourcing

value: media audience

value: digital community


dc.contributor.author

value: Vlasova, Elena G.

dc.identifier.citation

value: Vlasova E. G. (2022). The adaptive role of contemporary journalism and methods for its implementation: Based on the material of urban-oriented network media. Media Linguistics, 9 (2), 113–125.

dc.description.abstract

value:
Methods of realizing the adaptive role of contemporary journalism are considered on the
example of urban-oriented network media that emerged as an independent segment of the
Russian media in the 2010s. An accommodative role is one of the main institutional functions
of journalism and is to provide “useful news”. The implementation of this role is closely
related to the formation of service, or consumer, journalism (M. Eide, G. Knight), and such
spheres as lifestyle journalism, entertainment journalism, and brand journalism. The relevance
of the subject is confirmed by the findings of the international study “Worlds of Journalism:
Journalism Cultures Around the Globe” (T. Hanitzsch, F. Hanusch, J. Ramaprasad,
A. S. de Beer, 2019), which recorded the increased activity of this role in Russia. The information
agenda of urban-oriented network media, which focuses on urban everyday life
and creative urban practices, organically includes extensive service content. The study has
shown that the strengthening of the accommodation function in contemporary journalism
is closely related to the phenomenon of participation. Convenience, including compactness
and reading speed, interactivity and narrativization, which manifests itself both in the orientation
towards personal stories and in a special personalized manner of communication
between the author of the material and the reader, become the guiding principles in the
design of “useful news”. The genres of informational instructions or advice characteristic of
traditional consumer journalism in the spirit of lifestyle publications are transformed under
the influence of the new communicative attitude into interactive (cards, games, tests, a
cartographic application) and narrative (self-narrative, annotated announcement) formats.
Combining the principles of service and participatory journalism, urban-oriented network
media represent a completely successful experience in implementing an adaptive role aimed
not only at shaping a culture of consumption, but also creating actual urban identity and a
socially active community.

dc.language.iso

value: ru

value: adaptive role

value: urban-oriented network media

value: service journalism

value: participatory media

value: urban identity

dc.type

value: Article


dc.contributor.author

value: Ananjevskii, Sergey M.

value: Nevzorov, Valery B.

dc.identifier.citation

value: Ananjevskii S.M., Nevzorov V. B. On some probability distributions, related to the classical Bernoulli scheme. Vestnik of Saint Petersburg University. Mathematics. Mechanics. Astronomy, 2022, vol. 9 (67), issue 2, pp. 201–208.

dc.description.abstract

value:
For more than three centuries, the classical scheme of independent Bernoulli trials, starting
with the work of Jacob Bernoulli, has been one of the most popular topics in probability
theory. It is ideal for setting and solving various practical problems. Many results have been
obtained related to modifications of this scheme, but new situations and new problems appear
that require further progress in the study of various random variables associated to
one degree or another with independent Bernoulli trials. Solutions to some of these problems
are presented in this paper.

dc.publisher

value: St Petersburg State University

dc.relation.ispartofseries

value: Vestnik of St Petersburg University. Mathematics. Mechanics. Astronomy;Volume 9 (67); Issue 2

dc.subject

value: Bernoulli scheme

value: binomial distribution

value: geometric distribution

value: generating functions


dc.contributor.author

value: Amosov, Grigori G.

value: Baitenov, Egor L.

dc.identifier.citation

value: Amosov G.G., Baitenov E. L. On the space of Schwartz operators in the symmetric Fock space and its dual. Vestnik of Saint Petersburg University. Mathematics. Mechanics. Astronomy, 2022, vol. 9 (67), issue 2, pp. 193–200.

dc.description.abstract

value:
A long-standing problem that arises when constructing the mathematical apparatus of
quantum mechanics is the need to work with unbounded operators. Since the space of nuclear
operators is preconjugate for the algebra of all bounded operators, we can consider
the states of a quantum system as nuclear operators, and consider bounded operators as
observables. In this case, taking the trace for the product of a nuclear operator (a quantum
state) and a bounded operator (a quantum observable) gives the average value of a quantum
observable in a fixed state. The existence of such an average for unbounded operators
is not guaranteed. If we want to define a space of observables that includes such naturally
occurring unbounded operators as the position and momentum operators, for which average
values are always determined, we should consider a space of states smaller than all
nuclear operators. Recently, this approach has been mathematically correct implemented in
the Hilbert space H = L2(RN). The so-called space of Schwarz operators, equipped with a
system of semi-norms and being a Frechet space, was chosen as the space of states. Schwarz
operators appeared to be integral operators whose kernels are functions belonging to the
usual Schwarz space. The dual space to the space of Schwarz operators should be considered
as the space of quantum observables and it really includes such standard observables
as polynomials from the products of the position and momentum operators. In the present
work we transfer this approach to the symmetric Fock space H = F(H) over an infinite
dimensional separable Hilbert space H. We introduce the space of Schwartz operators in
F(H) over an infinite dimensional separable space H and investigate which of the standard
operators of quantum white noise belong to the space dual to the space of Schwartz operators.

dc.language.iso

value: ru

dc.subject

value: the space of Schwartz operators

value: the symmetric Fock space

value: quantum white noice


dc.contributor.author

value: Vostokov, Sergei V.

value: Pital’, Petr N.

value: Polyakov, Vladimir M.

dc.identifier.citation

value: Vostokov S.V., Pital’ P.N., Polyakov V. M. Higher criteria for the regularity of a one-dimensional local field. Vestnik of Saint Petersburg University. Mathematics. Mechanics. Astronomy, 2022, vol. 9 (67), issue 2, pp. 229–244.

dc.description.abstract

value:
The concept of irregularity of formal modules in one-dimensional local fields is considered.
A connection is obtained between the irregularity of all unramified extensions M/L and
the ramification index eL/K for a sufficiently wide class of formal groups. The notion of
s-irregularity for natural s is introduced (generalization of the notion of irregularity to the
case of roots [πs]), and similar criteria for irregularity are proved for it for the case of
generalized and relative formal Lubin—Tate modules.

dc.subject

value: regular formal modules

value: formal modules

value: formal groups

value: local fields

dc.title

value: Article


dc.contributor.author

value: Rusakov, Oleg V.

value: Ragozin, Roman A.

dc.identifier.citation

value: Rusakov O.V., Ragozin R.A. On extremes of PSI-processes and gaussian limits of their normalized independent identical distributed sums. Vestnik of Saint Petersburg University. Mathematics. Mechanics. Astronomy, 2022, vol. 9 (67), issue 2, pp. 269–277.

dc.description.abstract

value:
We define PSI-process — Poisson Stochastic Index process, as a continuous time random
process which is obtained by a manner of a randomization for the discrete time of a random
sequence. We consider the case when a double stochastic Poisson process generates this randomization,
i. e. such Poisson process has a random intensity. Under condition of existence
of the second moment the stationary PSI-processes possess a covariance which coincides
with the Laplace transform of the random intensity. In our paper we derive distributions
of extremes for a one PSI-process, and these extremes are expressed in terms of Laplace
transform of the random intensity. The second task that we solve is a convergence of the
maximum of Gaussian limit for normalized sums of i. i. d. stationary PSI-processes. We obtain
necessary and sufficient conditions for the intensity under which, after proper centering
and normalization, this Gaussian limit converges in distribution to the double Exponential
Law. For solution this task we essentially base on the monograph: M.R.Leadbetter, Georg Lindgren, Holder Rootzen (1986) “Extremes and Relative Properties of Random Sequences
and Processes”, end essentially use the Tauberian theorem in W. Feller form.

dc.description.sponsorship

value: This work is supported by Russian Foundation for Basic Research (grant no. 20-01-00646 А).

dc.publisher

value: St Petersburg State University

dc.relation.ispartofseries

value: Vestnik of St Petersburg University. Mathematics. Mechanics. Astronomy;Volume 9 (67); Issue 2

dc.subject

value: pseudo-poissonian type processes

value: random intensity

value: Laplace transform for distributions

value: Tauberian theorems


title: Reaction forces of singular pendulum

dc.contributor.author

value: Burian, Sergei N.

dc.identifier.citation

value: Burian S. N. Reaction forces of singular pendulum. Vestnik of Saint Petersburg University. Mathematics. Mechanics. Astronomy, 2022, vol. 9 (67), issue 2, pp. 278–293.

dc.description.abstract

value:
Various behavior types of reaction forces and Lagrange multipliers for the case of mechanical
systems with configuration space singularities are studied in this paper. The motion of
a one-dimensional double pendulum (or a singular pendulum) with a transversal singular
point or a first order tangency singular point is considered. Properties of the configuration
space of singular pendulum depends on the constraint line which the free vertex of
the double pendulum moves along. Configuration space of singular pendulum could be
represented by two smooth curves on a torus without common points, two transversely
intersecting smooth curves or two curves with first-order tangency. In order to study the
pendulum motion, the reaction forces on a two-dimensional torus are found. The expressions
for the reaction forces are obtained analytically in angular coordinates. In the case
of a transverse intersection it is proved that the reaction forces must be zero at the singular
point. In the case of a first-order tangency singularity, the reaction forces are nonzero
at the singular point. The Lagrange multiplier which depends on the motion along the
ellipse becomes unlimited near to the singular point. Two mechanisms with a different
type of singular points in the configuration space are described: a nonsmooth singular
pendulum and a broken singular pendulum. There are no smooth regular curves passing
through a singular point in the configuration spaces of these mechanical systems. In the
case of nonsmooth singular pendulum, the Lagrange multiplier which depends on the motion
along the ellipse becomes undefined when the singular point is passed. In the case of
broken singular pendulum, the Lagrange multiplier makes a jump from a finite value to an
infinite one.

dc.language.iso

value: ru

value: singular point

value: holonomic constraint

value: Lagrange multipliers

dc.title

value: Reaction forces of singular pendulum


title: Complement to the Hlder inequality for multiple integrals. I

dc.contributor.author

value: Ivanov, Boris F.

dc.identifier.citation

value: Ivanov B. F. Complement to the Hölder inequality for multiple integrals. I. Vestnik of Saint Petersburg University. Mathematics. Mechanics. Astronomy, 2022, vol. 9 (67), issue 2, pp. 255–268.

dc.description.abstract

value:
This article is the first part of the work, the main result of which is the statement
that if for functions γ1 ∈ Lp1 (Rn), . . . , γm ∈ Lpm(Rn), where m   2 and the numbers
p1, . . . , pm ∈ (1,+∞] are such that 1
p1
+ . . . + 1
pm
< 1, a non-resonant condition is met (the concept introduced by the author for functions from Lp(Rn), p ∈ (1,+∞]),
then supa,b∈Rn

[a,b]
 m
k=1 [γk(τ) +Δγk(τ )] dτ

  C  m
k=1
 γk +Δγk
L
pk
hk
(Rn), where [a, b]
is an n-dimensional parallelepiped, the constant C > 0 does not depend on functions
Δγk ∈ Lpk
hk
(Rn), and Lpk
hk
(Rn) ⊂ Lpk (Rn), 1   k   m, are specially constructed normalized
spaces. In the article, for any spaces Lp0 (Rn), Lp(Rn), p0, p ∈ (1,+∞] and any function
γ ∈ Lp0 (Rn) the concept of a set of resonant points of a function γ with respect to the
Lp(Rn) is introduced. This set is a subset of {R1 ∪{∞}}n for any trigonometric polynomial
of n variables with respect to any Lp(Rn) represents the spectrum of the polynomial in
question. Theorems are written on the representation of each function γ ∈ Lp0 (Rn) with a
nonempty resonant set as the sum of two functions such that the first of them belongs to
the Lp0 (Rn) ∩ Lq(Rn), 1
p + 1
q = 1, and the carrier of the Fourier transform of the second is
centered in the neighborhood of the resonant set.

dc.subject

value: the Hölder inequality

dc.type

value: Article


dc.contributor.author

value: Zenkova, Natalia V.

value: Nekrutkin, Vladimir V.

dc.identifier.citation

value: Zenkova N.V., Nekrutkin V.V. On the asymptotical separation of linear signals from harmonics by singular spectrum analysis. Vestnik of Saint Petersburg University. Mathematics. Mechanics. Astronomy, 2022, vol. 9 (67), issue 2, pp. 245–254.

dc.description.abstract

value:
The general theoretical approach to the asymptotic extraction of the signal series from the
additively perturbed signal with the help of singular spectrum analysis (briefly, SSA) was
already outlined in Nekrutkin (2010), SII, vol. 3, 297–319. In this paper we consider the
example of such an analysis applied to the linear signal and the additive sinusoidal noise.
It is proved that in this case the so-called reconstruction errors ri(N) of SSA uniformly
tend to zero as the series length N tends to infinity. More precisely, we demonstrate that
maxi |ri(N)| = O(N−1) if N → ∞ and the “window length” L equals (N + 1)/2. It is
important to mention, that the completely different result is valid for the increasing exponential
signal and the same noise. As it is proved in Ivanova, Nekrutkin (2019), SII, vol. 12,
1, 49–59, in this case any finite number of last terms of the error series does not tend to
any finite or infinite values.

dc.description.sponsorship

value: The study was supported by the Russian Foundation for Basic Research (project no. 20-01-00067).

dc.publisher

value: St Petersburg State University

dc.relation.ispartofseries

value: Vestnik of St Petersburg University. Mathematics. Mechanics. Astronomy;Volume 9 (67); Issue 2

dc.subject

value: signal processing

value: singular spectral analysis

value: separability

value: linear signal

value: asymptotical analysis


dc.contributor.author

value: Ahsanullah, Mohammad

value: Nevzorov, Valery B.

value: Stepanov, Alexei V.

dc.identifier.citation

value: Ahsanullah M., Nevzorov V.B., Stepanov A.V. On some relationships between records in the transition from continuous to discrete distributions. Vestnik of Saint Petersburg University. Mathematics. Mechanics. Astronomy, 2022, vol. 9 (67), issue 2, pp. 209–218.

dc.description.abstract

value:
In the present work, we consider discretization of continuous distributions and study relations
between continuous record values, weak record values and discrete record values
obtained from continuous record values by discretization. We first compare the numbers
of continuous record values registered in real intervals and the numbers of discrete record
values and weak record values located on the sets of non-negative integers. Further in the
paper, we introduce the so-called strong continuous record values that hold out after discretization
and we discuss their distributional properties. We also analyze what happens with record values after discretization of the standard exponential distribution. Finally, we
present a simulation experiment, which supports the theoretical results of the paper.

dc.description.sponsorship

value:
The V. B. Nevzorov’s work was partially supported by Russian Foundation for Basic Research
(grant no. 18-01-00393). The work of A. V. Stepanov was supported by the Ministry of Science and
Higher Education of the Russian Federation (agreement no. 075-02-2021-1748).

dc.language.iso

value: ru

dc.subject

value: records

value: strong records

value: weak records

value: discretization

value: exponential distribution

value: geometric distribution


dc.contributor.author

value: Volkov, Dmitrii Yu.

value: Galunova, Kseniia V.

dc.identifier.citation

value: Volkov D.Yu., Galunova K.V. Metric invariants of a second-order hypersurface in an n-dimensional Euclidean space. Vestnik of Saint Petersburg University. Mathematics. Mechanics. Astronomy, 2022, vol. 9 (67), issue 2, pp. 219–228.

dc.description.abstract

value:
The article is devoted to the classical problem of analytic geometry in n-dimensional Euclidean
space: finding the canonical equation of a quadric. The canonical equation is determined
by the invariants of the second-order surface equation. Invariants are quantities that
do not change under an affine change of space coordinates. S. L. Pevsner found a convenient
system of the following invariants: q is the rank of the extended matrix of the system for determining
the center of symmetry of the surface; the roots of the characteristic polynomial
of the matrix of quadratic terms of the surface equation, i. e. the eigenvalues of this matrix;
Kq is the coefficient of the variable λ to the power of n − q in a polynomial equal to the
determinant of the n + 1 order matrix obtained by a certain rule from the original surface
equation. All the coefficients of the canonical equations of quadrics are expressed through
eigenvalues of the matrix of quadratic terms and the coefficient Kq. Pevsner’s result is
proved in a new way. Elementary properties of determinants are used in the proof. This
algorithm for finding the canonical equation of a quadric is a very convenient algorithm for
computer graphics.

dc.publisher

value: St Petersburg State University

dc.relation.ispartofseries

value: Vestnik of St Petersburg University. Mathematics. Mechanics. Astronomy;Volume 9 (67); Issue 2

dc.subject

value: invariant

value: second-order hypersurfaces

dc.title

value: Article


dc.contributor.author

value: Smirnov, Alexey S.

value: Smolnikov, Boris A.

dc.identifier.citation

value: Smirnov A. S., Smolnikov B.A. Optimization of oscillation damping modes of spatial double pendulum. I. Formulation of the problem. Vestnik of Saint Petersburg University. Mathematics. Mechanics. Astronomy, 2022, vol. 9 (67), issue 2, pp. 357–365.

dc.description.abstract

value:
The paper discusses the issues of optimal damping of oscillations of a spatial double pendulum,
whose joint axes are not collinear to each other. As options for damping, both
simply passive damping associated with the influence of viscous friction, and combined
passive and active damping are considered, and active influences are formed according to
the principle of collinear control. The analytical solution of the system motion equations is
given for both cases in the framework of the linear model, and it clearly demonstrates the
damping of motions on the natural oscillation modes of the original conservative model.
The optimization criteria characterizing the efficiency of the damping processes of system
movements are considered. It is noted that in order to obtain the most strongly marked
damping modes, the degree of stability should be maximized or the integral energy-time
indicator should be minimized. In addition, the main advantages and disadvantages of these
optimization criteria are discussed. This article is the basis for further research, which will
be presented as a separate article “Optimization of oscillation damping modes of spatial
double pendulum. II. Solving the problem and analyzing the results”.

dc.subject

value: spatial double pendulum

value: viscous friction

value: collinear control

value: optimization criterion

value: degree of stability

value: energy-time criterion


dc.contributor.author

value: Kuleshov, Alexander S.

value: Pikunova, Elizaveta N.

dc.identifier.citation

value: Kuleshov A. S., Pikunova E.N. Analytical research of the Hopf bifurcation in the problem of motion of the rattleback. Vestnik of Saint Petersburg University. Mathematics. Mechanics. Astronomy, 2022, vol. 9 (67), issue 2, pp. 305–316.

dc.description.abstract

value:
We consider the classical problem of the nonholonomic system dynamics — the problem
of motion of a heavy rigid body on an perfectly rough horizontal plane. The effect of
loss of stability of permanent rotation of a body at a certain critical value of its angular
velocity is discussed. It is proved that this effect is accompanied by the occurrence of
periodic motions of the body with a frequency close to the critical value, that is, the Hopf
bifurcation takes place. It is proved by direct calculation of the first Lyapunov coefficient
that the corresponding periodic motions are unstable.

dc.description.sponsorship

value: This work was supported by the Russian Foundation for Basic Research (project no. 20-01-00637).

dc.language.iso

value: ru

value: rattleback

value: rolling without sliding

value: permanent rotations

value: Hopf bifurcation


dc.contributor.author

value: Kats, Victor M.

value: Morozov, Viktor A.

value: Sevastyanov, Yaroslav A.

dc.identifier.citation

value: Kats V. M., Morozov V.A., Sevastyanov Ya.A. Calculation of stresses initiated by an electric explosion of conductors in a composite thick-walled cylinder. Vestnik of Saint Petersburg University. Mathematics. Mechanics. Astronomy, 2022, vol. 9 (67), issue 2, pp. 294– 304.

dc.description.abstract

value:
The paper presents a dynamic loading analysis of a material carried out by the exploding
wire method (EWM). A composite cylinder is chosen as an experimental sample. It is a
thick-walled cylinder made of polymethyl methacrylate with an axial bore formed therein,
pressed into an aluminium shell. The sample was loaded by applying an electric voltage
to a conductor in the form of a copper wire placed inside the axial bore of the sample.
An equation of state for an electric explosion of a conductor obtained. Dependence between
the pressure in the air channel and the expansion coefficient of the EWM products
demonstrated with comparison charts of the experimental and theoretical values. A theoretical
model that describes the amplitude characteristic of the radial stresses arising during
the loading is constructed, taking into account the boundary and initial conditions. The
substantiation of the model accuracy is given by comparing the obtained results with experimental
data. The estimation of the circumferential stress at which the aluminium shell
breaks directly performed.

dc.publisher

value: St Petersburg State University

dc.relation.ispartofseries

value: Vestnik of St Petersburg University. Mathematics. Mechanics. Astronomy;Volume 9 (67); Issue 2

value: dynamic loading

value: radial stress

value: thick-walled cylinder

value: electric explosion of conductors

dc.type

value: Article


dc.contributor.author

value: Pavlovsky, Valerii А.

dc.identifier.citation

value: Pavlovsky V.A. Power-law generalization of Newton’s formula for shear stress in a liquid in the form of a tensor rheological relation. Vestnik of Saint Petersburg University. Mathematics. Mechanics. Astronomy, 2022, vol. 9 (67), issue 2, pp. 338–345.

dc.description.abstract

value:
A generalization of Newton’s formula for the shear stress in a fluid is carried out by giving
it a power-law form and the corresponding rheological relation is written in tensor form.
Depending on the exponent in this rheological ratio, one can come to a description of either
a laminar or turbulent flow regime. In the latter case, there is a system of differential equations
with the no-slip boundary condition. The proposed system of equations for turbulent
fluid motion can be useful, at least, for obtaining preliminary, estimated characteristics
of turbulent flow before starting numerical modeling using modern differential turbulence
models. For some values of the exponent, this system can be used to describe the behavior
of power-law fluids, as well as fluids with small additives of polymers in the manifestation
of the Toms effect.

dc.description.sponsorship

value:
This study was carried out within the framework of the state task for the implementation of research
works no. 075-03-2020-094/1 of 10.06.2020.

dc.language.iso

value: ru

dc.subject

value: power formulas

value: generalization of Newton’s formula

value: Blasius formula

value: stress tensor

value: differential equations of turbulent flow

value: analytical solutions


dc.identifier.citation

value: Session of Section of the House of scientists of the Russian Academy of Sciences on the theoretical mechanics of prof. N. N. Poljakhov. November 17, 2021. Vestnik of Saint Petersburg University. Mathematics. Mechanics. Astronomy, 2022, vol. 9 (67), issue 2, p. 316.

dc.publisher

value: St Petersburg State University

dc.relation.ispartofseries

value: Vestnik of St Petersburg University. Mathematics. Mechanics. Astronomy;Volume 9 (67); Issue 2


dc.identifier.citation

value: Session of Section of the House of scientists of the Russian Academy of Sciences on the theoretical mechanics of prof. N. N. Poljakhov. October 27, 2021. Vestnik of Saint Petersburg University. Mathematics. Mechanics. Astronomy, 2022, vol. 9 (67), issue 2, p. 304.


dc.identifier.citation

value: Session of Section of the House of scientists of the Russian Academy of Sciences on the theoretical mechanics of prof. N. N. Poljakhov. October 6, 2021. Vestnik of Saint Petersburg University. Mathematics. Mechanics. Astronomy, 2022, vol. 9 (67), issue 2, p. 293.


dc.contributor.author

value: Morozov, Nikita F.

value: Indeitsev, Dmitriy A.

value: Lukin, Alexei V.

value: Popov, Ivan A.

value: Shtukin, Lev V.

dc.identifier.citation

value: Morozov N. F., Indeitsev D.A., Lukin A.V., Popov I.A., Shtukin L.V. Nonlinear modal interaction between longitudinal and bending vibrations of a beam resonator under periodic thermal loading. Vestnik of Saint Petersburg University. Mathematics. Mechanics. Astronomy, 2022, vol. 9 (67), issue 2, pp. 317–337.

dc.description.abstract

value:
The paper investigates the nonlinear modal interaction of longitudinal and bending vibrations
of a beam resonator under periodic thermal loading. The mode of parametric
oscillations is investigated under conditions of internal multiple resonance between some ﬂexural and longitudinal forms of free oscillations of the resonator. The possibility of gener-
ation in the system of the longitudinal-bending mode was found, the frequency of the slow envelope
of which essentially depends on the parameter of the internal frequency detuning, which is direct y
related to the magnitude of external disturbances subject to high-precision
measurement.

dc.description.sponsorship

value: This work was supported by the Russian Foundation for Basic Research (project no. 20-01-00537).

dc.subject

value: nonlinear dynamics

value: parametric oscillations

value: Bernoulli—Euler beam

value: modal interaction

value: beats

dc.type

value: Article


dc.contributor.author

value: Shakurova, Liia A.

value: Kustova, Elena V.

dc.identifier.citation

value: Shakurova L. A., Kustova E. V. Boundary conditions for fluid-dynamic parameters of a single-component gas flow with vibrational deactivation on a solid wall. Vestnik of Saint Petersburg University. Mathematics. Mechanics. Astronomy, 2022, vol. 9 (67), issue 2, pp. 366–377.

dc.description.abstract

value:
Boundary conditions for fluid-dynamic parameters of a strongly non-equilibrium singlecomponent
rarefied gas flow in the slip regime are obtained using kinetic-theory methods.
The gas flow is described in the frame of the state-to-state approach assuming vibrational
energy exchange as the slow relaxation process. The set of governing equations including
conservation equations coupled with additional relaxation equations for vibrational state
populations is presented. The gas-solid surface interaction is considered on the basis of
the specular-diffusive model, and possible vibrational deactivation/excitation processes on
the wall are taken into account. The obtained boundary conditions depend on the accommodation
and deactivation coefficients along with the transport coefficients such as the
multi-component vibrational energy diffusion and thermal diffusion coefficients; the thermal
conductivity; the bulk and shear viscosity coefficients and the relaxation pressure. The dependence of boundary conditions on the normal mean stress has been obtained for the
first time. In the particular case of the gas without internal degrees of freedom, the slip
velocity and the temperature jump can be reduced to the well-known in the literature
expressions. Implementation of the state-specific boundary conditions should not cause additional
computational costs in numerical simulations of viscous flows in the state-to-state
approach, since the slip/jump equations depend on the transport coefficients which have
to be evaluated regardless of the boundary conditions used in the code.

dc.description.sponsorship

value: This work was supported by the St Petersburg State University (project ID 84912260).

dc.language.iso

value: ru

dc.publisher

value: St Petersburg State University

dc.relation.ispartofseries

value: Vestnik of St Petersburg University. Mathematics. Mechanics. Astronomy;Volume 9 (67); Issue 2

dc.subject

value: non-equilibrium flow

value: state-to-state approach

value: boundary conditions

value: concentration jump

value: slip velocity

value: temperature jump


dc.contributor.author

value: Romanenkov, Аlexander M.

dc.identifier.citation

value: Romanenkov A.M. On solutions of the equation of small transverse vibrations of a moving canvas. Vestnik of Saint Petersburg University. Mathematics. Mechanics. Astronomy, 2022, vol. 9 (67), issue 2, pp. 346–356.

dc.description.abstract

value:
The paper considers a model problem of one-dimensional small transverse vibrations of a
canvas moving at a constant speed, which is fixed in a hinged manner. The oscillatory process
is described by a linear differential equation of the 4th order with constant coefficients.
In the model under consideration, the Coriolis force is taken into account, which leads to
the appearance of a term with a mixed derivative in the differential equation. This effect
makes it impossible to use the classical method of separating variables. However, families
of exact solutions of the oscillation equation in the form of a traveling wave have been
constructed. For the initial-boundary value problem, it was established that the solution
can be constructed in the form of a Fourier series according to the system of eigenfunctions
of the auxiliary problem on beam vibrations. For the considered oscillatory process, the law
of conservation of energy is established and the uniqueness of the solution to the initialboundary
value problem is proved.

dc.subject

value: the equation of vibrations of a moving canvas

value: the law of conservation of energy

value: exact solutions


title: In memoriam of Arkady Khaimovich Gelig

dc.identifier.citation

value: In memoriam of Arkady Khaimovich Gelig. Vestnik of Saint Petersburg University. Mathematics. Mechanics. Astronomy, 2022, vol. 9 (67), issue 2, pp. 379–381.

dc.description.abstract

value: In memoriam of Arkady Khaimovich Gelig

value: Article


dc.identifier.citation

value: By the 100th anniversary of the birth of Ivan Petrovich Mysovskikh (1921–2007). Vestnik of Saint Petersburg University. Mathematics. Mechanics. Astronomy, 2022, vol. 9 (67), issue 2, p. 378.

dc.language.iso

value: ru

dc.publisher

value: St Petersburg State University


dc.contributor.author

value: Kovalev, Vitaly V.

value: Moldobaev, Temirlan S.

value: Molitvin, Mikhail N.

value: Suyazov, Vyacheslav V.

dc.identifier.citation

value: Kovalev, V. V., Moldobaev, T. Sh., Molitvin, M. N., and Suyazov, V. V. (2022) ‘Analysis of the efficiency of support programs for Russian universities (2010–2020)’, St Petersburg University Journal of Economic Studies, 38 (2), pp. 208–234.

dc.description.abstract

value:
The article provides a comparative analysis of the scientometric achievements of universities
of the “5–100” group and the two leading universities of the country, Moscow State University
and St Petersburg State University. Issues of linking the financing of higher education and
scientometric achievements of educational institutions are considered. Particular attention is
paid to qualitative indicators, in particular, publications in high-ranking journals. The fastest
effect of promotion in ratings is achieved, among other things, using unscrupulous methods and techniques, which in the long run have serious reputational costs. The content of individual
coefficients is disclosed, which it is advisable to use to compare the scientometric achievements
of universities. A qualitative description of the comparative parameters in the field of
scientometrics, the features of their calculation and interpretation, as well as a logical interpretation
of the comparison results are given. The purpose of the study is to identify the most
objective indicators for comparing the scientific value of the publication activity of university
staff, which can later be used to comparatively characterize the effectiveness of universities in
terms of promotion in international rankings. The most qualitative comparison is possible for
a number of scientometric indicators, which are based on the division of publication sources
into quartiles. The problem of “garbage” (“predatory”) journals is considered in the context
of university ratings. The trends in higher education in terms of achieving the planned scientometric
parameters are characterized, and new indicators are identified that can be used to
obtain a reliable and verifiable qualimetric assessment of the “value” of the university or the
scientific community. The indicator “fair citation” is introduced, which is supposed to be used
to assess the quality of the published material.

dc.relation.ispartofseries

value: St Petersburg University Journal of Economic Studies;Volume 38; Issue 2

dc.subject

value: scientometrics

value: university

value: theory

value: information

value: development

value: knowledge

value: publication activity


dc.contributor.author

value: Taranukha, Yury V.

dc.identifier.citation

value: Taranukha, Yu. V. (2022) ‘Will mesoeconomics become a new direction in economic theory?’, St Petersburg University Journal of Economic Studies, 38 (2), pp. 259–284.

dc.description.abstract

value:
The article provides an overview of the mesoeconomic method of analysis of modern economy
and assesses its scientific potential. Given the specifics of the mesoeconomic approach
development, the author examines foreign and domestic ideas around it. Foreign literature
uses three approaches to the problem, from the point of view of regional economy, institutional
theory, and methodological approach. The article shows that Russian scientists, building
on foreign authors’ ideas, have expanded the field of scientific mesoeconomics research,
developing several directions separating from each other. Examining the reasons for interest
in mesoeconomics and paying tribute to the achievements of Russian science in addressing
the problem under consideration, the author explores whether mesoeconomics become a new
direction of economic analysis in its current state. The article demonstrates that inclusion
of different economic entities in mesoeconomics results in meso-space boundaries blurring
and makes the object and subject of mesoeconomic research amorphous. While recognizing
evolutionary approach as possible solution to the mesoeconomics’ problems, the author
highlights its limitations. Given the need to expand the new phenomena analysis tools, the article
concludes that mesoeconomics has significant scientific potential. It needs to determine
the nature of entities forming the meso-space, as well as establish the reasons behind their
emergence. The author sees the reason in the contradiction generated by modern hyper-competition:
the need for continuous innovative leadership contradicts the inability to provide it
alone; this is resolved through the emergence of a fundamentally new form of production —
inter-production cooperation of specialized legally and economically independent firms.

dc.subject

value: mesoeconomics

value: actors of mesoeconomics

value: mesolevel of economic analysis

value: institutional mesoeconomics

value: heterodox mesoeconomics

value: mesoeconomics of social reproduction

dc.type

value: Article


dc.contributor.author

value: Borisov, Gleb V.

value: Popova, Liudmila V.

dc.identifier.citation

value: Borisov, G. V., and Popova, L. V. (2022) ‘Russian intra-industry trade: Trends in recent decades’, St Petersburg University Journal of Economic Studies, 38 (2), pp. 153–185.

dc.description.abstract

value:
The article reveals the trends of Russian intra-industry trade in the period 2001–2018 with
the twenty largest partners, united in three groups, namely developed economies, developing
countries and CIS states. Intra-industry trade was estimated using data for export and import
for each of the 6-digit Harmonized Commodity Description and Coding System product
groups. The authors use the Fontanier — Freudenberg and Grubel — Lloyd indices to determine
the share of horizontal, vertical and high-quality vertical IIT in agricultural products,
raw materials and manufactures. It was revealed that Russia’s intra-industry trade including
high-quality vertical IIT, both in terms of value and intensity is highly concentrated on the CIS
countries, especially Belarus. A vertical type of intra-industry specialization dominates Russia’s
intra-industry trade with all groups of countries, which generally corresponds to global
trends. However, the horizontal type of specialization is most pronounced in trade with the
CIS countries. It was found that most of the intra-industry exchange takes place in trade in
manufactures, mainly with Belarus. The intensity of intra-industry trade in all commodity
groups with both developed and developing countries remains very low and has not changed over the period under review. It is noted that during the 2010s, the intensity of all types of
intra-industry trade with Belarus and Kazakhstan increased, primarily trade in industrial and
agricultural goods, which is largely due to integration. The authors conclude that further integration
with this group of countries contributes to the development of intra-industry specialization,
export sophistication and the realization of technological advantages.

dc.description.sponsorship

value:
The reported study was funded by the Russian Foundation for Basic Research and the Chinese
Academy of Social Sciences according to the research project no. 19-51-93009.

dc.language.iso

value: ru

dc.publisher

value: St Petersburg State University

dc.relation.ispartofseries

value: St Petersburg University Journal of Economic Studies;Volume 38; Issue 2

dc.subject

value: horizontal intra-industry trade

value: vertical intra-industry trade

value: Fontagnier — Freudenberg index

value: Grubel — Lloyd index

value: international specialization


dc.contributor.author

value: Kapelyuk, Sergey D.

value: Lishchuk, Elena N.

dc.identifier.citation

value: Kapelyuk, S. D., and Lishchuk, E. N. (2022) ‘Assessing the factors of the overeducation in the rural labor market’, St Petersburg University Journal of Economic Studies, 38 (2), pp. 285–314.

dc.description.abstract

value:
The article analyzes the determinants of the overeducation in the Russian rural labor market
compared to the urban labor market. As a database the article uses the 2018 Federal State Statistics
Service Labor Force Survey microdata. The hypothesis of the research is that the main
determinants in the rural labor market are employment in personal subsidiary plots, marital
status, housekeeping and childcare. The authors perform analysis by each level of vocational
education: higher and secondary vocational (separately for medium-level specialists and
skilled workers). The determinants of overeducation are investigated using a binary regression
model. The authors reveal that a higher level of overeducation is associated with employment
in personal subsidiary plots for the purpose of selling products. Other significant determinants
of overeducation in the rural labor market include gender; marital status; age; the number
of household members; education field. Higher risks of overeducation are observed for
persons with foreign citizenship; single men; as well as those living in larger households. The
authors reveal significant differences in the determinants of overeducation among specialists
and skilled workers. At the same time, no significant differences are found in the determinants
of overeducation among high- and middle-level specialists. The results contribute to the investigation
of the problems of imbalance in the labor market in Russia.

dc.description.sponsorship

value:
The research was carried out with the plan of research work of Institute of Economics and Industrial
Engineering, Siberian Branch of the Russian Academy of Sciences, project “Actors, drivers, consequences of
social changes in the present-day society: theory and empirics”, no. 121040100280-1.

dc.subject

value: rural labor market

value: human capital

value: occupation

value: education-occupation mismatch

value: overeducation


dc.contributor.author

value: Davydov, Ruslan V.

dc.identifier.citation

value: Davydov, R. V. (2022) ‘Improving customs administration in accordance with the EAEU Development Strategy until 2025’, St Petersburg University Journal of Economic Studies, 38 (2), pp. 186– 207.

dc.description.abstract

value:
The article presents the results of the analysis of the process of economic cooperation of the
EAEU member countries until 2025 in terms of improving the customs policy. Despite the
constantly reaffirmed political will of the heads of state, the implementation of strategic cooperation
is not proceeding fast enough, and the deadlines for a number of activities have
already been violated. In this regard, the subject of the article is the study of the causes of such
difficulties, which in the long term have a serious negative impact on the processes of integration
of the economies of the EAEU member countries. The purpose of the study is to identify
and level the most objective reasons for such difficulties in terms of the customs policy of the
EAEU member countries. Demonstrates and reveals the range of methodological tasks set for
the expansion of interstate economic cooperation in terms of customs processes. The analysis
of the implementation of measures in the direction of customs administration is carried out,
and the impact of such measures on the development of the EAEU as a whole is assessed.
It is obvious that the efforts of the EAEU member states, especially in modern conditions,
are aimed primarily at protecting their national economic interests. However, strategically,
all members of the EAEU should benefit from the development of multilateral cooperation.
Based on the comparative analysis, the author proposes tools for accelerating and improving
the efficiency of the implementation of integration in the field of customs administration. A
number of proposals have been formulated regarding the format, timing of submission and
content of these events. The issues of linking the legislative requirements of the EAEU member
countries in terms of customs administration are considered. The results of the study showed
that effective integration economic processes are impossible without their proper regulatory
support, including in terms of customs administration.

dc.language.iso

value: ru

dc.publisher

value: St Petersburg State University

dc.subject

value: customs regulation

value: customs administration

value: member states of the EAEU

value: Strategy for the Development of Eurasian Integration

value: customs procedure

value: customs operation

value: single standard for customs administration

dc.title

value: Article


dc.contributor.author

value: Okrepilov, Vladimir V.

dc.identifier.citation

value: Okrepilov, V. V. (2022) ‘Notes on the history of the creation of the Russian Academy of Sciences and St Petersburg University in 1724’, St Petersburg University Journal of Economic Studies, 38 (2), pp. 315–327.

dc.description.abstract

value:
The achievements of Russian science and education form a reliable basis for the innovative development
of the modern economy. It is quite natural, therefore, that there is an interest in the origins
of the origin of science and education in Russia. In preparing this article, the author relied on the materials of books written by him about such outstanding scientists as Leonard Euler, Mikhail
Lomonosov, Dmitry Mendeleev, who forever inscribed their names in the history of St Petersburg
University and made the glory of Russian and world science. The article examines on a factual
basis the history of the creation of the St Petersburg Academy of Sciences and Arts, established
on the initiative of Peter I. At the request of Peter I, the University and the Gymnasium were
included in the Academy. Thus, the simultaneous beginning of the activities of the current Russian
Academy of Sciences and St Petersburg State University was laid, having one common date
of foundation — January 28 (February 8), 1724. The article examines the first years of the Academy
and the University through the special contribution to their development of a number of
outstanding scientists, first of all, M. V. Lomonosov. M. V. Lomonosov has the merit of separating
the University into an independent unit within the Academy of Sciences, its reorganization in
order to ensure high-quality training of domestic scientists and their replenishment of the Academy’s
ranks. The main economic ideas of M. V. Lomonosov, who anticipated the modern policy
of state protectionism in his proposals. The data on the beginning of the systematic teaching of
economic disciplines after the restoration of the activities of St Petersburg University in 1819 are
given. Shown are examples of close cooperation between the Russian Academy of Sciences and
St Petersburg State University in the modern period, when preparations began for the 300th anniversary
of the Russian Academy of Sciences and St Petersburg State University.

dc.description.sponsorship

value:
The article was prepared based on the results of the fundamental scientific research under the
Program of Fundamental Scientific Research of the State Academies of Sciences for 2013–2020.

dc.relation.ispartofseries

value: St Petersburg University Journal of Economic Studies;Volume 38; Issue 2

dc.subject

value: science

value: education

value: development

value: economics

value: university

value: metrology


dc.contributor.author

value: Fetter, Barbara

value: Zilahy, Gyula

dc.identifier.citation

value: Fetter, B., and Zilahy, G. (2022) ‘Challenges of the green supply chain management in the pharmaceutical industry’, St Petersburg University Journal of Economic Studies, 38 (2), pp. 235– 258.

dc.description.abstract

value:
Green supply chain management has gained significant interest in recent years; however, we
still have limited understanding of specific characteristics of different industries. The aim of
this paper is to characterize the pharmaceutical supply chains from an environmental perspective.
Our methodology provides a novel contribution to the literature describing green
supply chain management, since no detailed analysis of the environmental aspects of the pharmaceutical
industry has been carried out this way. Our results can inform pharmaceutical
businesses and policymakers about the limiting factors of green supply chain management
in the pharmaceutical sector and provide insights to overcome hindrances and to design new
tools. By looking at the supply chains of the pharmaceutical sector, we demonstrate that the
potentials of green supply chain management may be limited by several factors. First, the relationship
between pharmaceutical substance suppliers and medicinal product manufacturers
is characterized by long-term partnerships and strong interdependence. Second, interviews
suggest that consumers neither have environmental expectations towards medicinal products,
nor act in an environmentally conscious manner regarding the disposal of medicinal
products. Third, our findings on actual environmental measures implemented by companies
suggests that the specific characteristics of pharmaceutical supply chains, such as strict quality
and health requirements, impose severe limitations on the greening of supply chains. This
study builds on the analysis of the international literature, through which it presents the issues
of green supply chains in the pharmaceutical industry. Our research can be useful to national
and international readers as well.

dc.language.iso

value: en

dc.publisher

value: St Petersburg State University

value: corporate sustainability

value: green supply chain management

value: pharmaceutical industry

value: green chemistry


dc.contributor.author

value: KURBATOVA, GALINA I.

value: VINOGRADOVA, EKATERINA M.

value: KLEMESHEV, VLADIMIR A.

dc.identifier.citation

value: KURBATOVA G. I., VINOGRADOVA E. M., KLEMESHEV V. A. ANALYSIS OF SIMPLIFIED GAS TRANSPORTATION MODELS. CALCULATION OF THE GAS LEAK LOCATION IN A PIPELINE. Vestnik of Saint Petersburg University. Applied Mathematics. Computer Science. Control Processes, 2022, vol. 18, iss. 2, pp. 239–252.

dc.description.abstract

value: An approach to a simplified calculation of the characteristics of a steady gas flow through a pipeline is proposed. In this approach, the pressure is calculated using an isothermal model; the temperature analysis is reduced to a cubic equation solving. A simple analytical gas leak point coordinate dependence on the pressure and gas flow values is obtained at outlet from the pipeline. The result of comparison of calculations for the general and simplified models of gas flow in pipelines is presented. A criterion has been determined for the fulfillment of which it is permissible to use a simplified approach to calculating the gas characteristics and the leak point coordinates. Using an example of practical interest, the high accuracy of the calculation according to the proposed approach of both pressure and temperature in the flow and the gas leak coordinate in the pipeline is demonstrated.

dc.language.iso

value: ru

dc.relation.ispartofseries

value: Vestnik of St Petersburg University. Applied Mathematics. Computer Science. Control Processes;Volume 18; Issue 2

value: NATURAL GAS FLOW

value: MATHEMATICAL MODEL

value: SIMPLIFICATIONS

value: ANALYTICAL CALCULATION OF PRESSURE

value: TEMPERATURE

value: COORDINATES OF THE LEAK

dc.type

value: Article


dc.contributor.author

value: NDIAYE, SERINE MODOU

value: PARILINA, ELENA M.

dc.identifier.citation

value: NDIAYE S. M., PARILINA E. M. AN EPIDEMIC MODEL OF MALARIA WITHOUT AND WITH VACCINATION. PT 1. A MODEL OF MALARIA WITHOUT VACCINATION. Vestnik of Saint Petersburg University. Applied Mathematics. Computer Science. Control Processes, 2022, vol. 18, iss. 2, pp. 263–277.

dc.description.abstract

value: We propose a mathematical model of the malaria epidemic in the human population (host), where the transmission of the disease is produced by a vector population (mosquito) known as the malaria mosquito. The malaria epidemic model is defined by a system of ordinary differential equations. The host population at any time is divided into four sub-populations: susceptible, exposed, infectious, recovered. Sufficient conditions for stability of equilibrium without disease and endemic equilibrium are obtained using the Lyapunov’s function theory. We define the reproductive number characterizing the level of disease spreading in the human population. Numerical modeling is made to study the influence of parameters on the spread of vector-borne disease and to illustrate theoretical results, as well as to analyze possible behavioral scenarios.

dc.publisher

value: St Petersburg State University

dc.subject

value: EPIDEMIC MODEL

value: HUMAN POPULATION

value: MALARIA

value: SUB-POPULATIONS

value: MODIFICATION EPIDEMIC SEIR

value: MODEL

value: REPRODUCTIVE NUMBER

value: ENDEMIC EQUILIBRIUM


dc.contributor.author

value: MITROFANOVA, OLGA A.

value: MITROFANOV, EUGENII P.

value: BURE, NATALIYA A.

dc.identifier.citation

value: MITROFANOVA O. A., MITROFANOV E. P., BURE N. A. ONTOLOGICAL APPROACH APPLICATION TO THE DESIGN OF A GEOSPATIAL EXPERIMENTAL DATABASE FOR INFORMATION SUPPORT OF RESEARCH IN PRECISION AGRICULTURE. Vestnik of Saint Petersburg University. Applied Mathematics. Computer Science. Control Processes, 2022, vol. 18, iss. 2, pp. 253–262.

dc.description.abstract

value: Thanks to the development of information technologies and computing resources, it became possible to obtain and process big data, including geospatial data. Most research in the field of precision farming is interdisciplinary in nature, with experimental field data used by disparate scientific groups. In this connection, it became necessary to develop a unified web-based system for storing, organizing, and exchanging experimental information between researchers. The first step in achieving this goal was to create a geospatial database. Since the system being developed in the future may require extensions, modifications, adjustments, integration into other projects, it seems appropriate to use the ontology to form the database structure. The most popular tools were used as the main tools: the ontology language OWL (Ontology Web Language), the Protege 5.5 development environment. The main initial information obtained in the course of experimental studies carried out at the biopolygon: weather data, agrochemical indicators (sampling of soil and plants with georeferencing), agrophysical parameters (humidity, electrical conductivity), remote sensing data. Based on the results of the analysis of the current state of research in the field of storage and systematization of experimental information in crop production, as well as a survey of ARI employees, a prototype of the database structure was formed based on the ontological approach. Nine parent classes were defined as the foundation: Field, Crop rotation - experience, Agrotechnology, Yield, Meteo, Ground samples, Orthophoto, Calendar, and Dictionary - units of measurement.

dc.language.iso

value: ru

dc.relation.ispartofseries

value: Vestnik of St Petersburg University. Applied Mathematics. Computer Science. Control Processes;Volume 18; Issue 2

dc.subject

value: ONTOLOGY

value: PRECISION AGRICULTURE

value: FIELD EXPERIMENTS

value: BIOPOLYGON


dc.contributor.author

value: OLEMSKOY, IGOR V.

value: FIRYULINA, OXANA S.

value: TUMKA, OLEG A.

dc.identifier.citation

value: OLEMSKOY I. V., FIRYULINA O. S., TUMKA O. A. FAMILIES OF EMBEDDED METHODS OF ORDER SIX. Vestnik of Saint Petersburg University. Applied Mathematics. Computer Science. Control Processes, 2022, vol. 18, iss. 2, pp. 285–296.

dc.description.abstract

value: In the paper embedded methods of order six, with seven stages for solving systems of ordinary differential equations, are derived. A family of Runge- Kutta methods, of order six with seven stages and having three free parameters, is presented. This family is extended in two different ways with embedded methods to form families of embedded method pairs. Numerical comparison is given for certain examples of the embedded pairs from the constructed families.

dc.publisher

value: St Petersburg State University

dc.subject

value: CAUCHY PROBLEM

value: EMBEDDED METHODS

value: ERROR CONTROL

value: ORDER

value: STAGE

value: ORDER CONDITIONS

value: SIMPLIFYING CONDITIONS

dc.title

value: Article