dc.contributor.author

value: Shevchenko, Kirill Vladimirovich

value: Kazak, Oleg Gennadyevich

dc.identifier.citation

value: Shevchenko, Kirill Vladimirovich; Kazak, Oleg Gennadyevich. An innovative study of the history of the formation of the Belarusian and Ukrainian languages, in Studia Slavica et Balcanica Petropolitana. 2022. № 2. Pp. 228-235. DOI https://doi.org/10.21638/spbu19.2022.215

dc.description.abstract

value: The article is a review the book «“Native Word”. Belarusian and Ukrainian languages at school (Essays on the history of mass education in the middle of the 19th – the middle of the 20th century)». The collection of essays is devoted to the organization of education in the Belarusian and Ukrainian lands, which during the mid-19th – mid-20th centuries were part of various state formations (Russian Empire, Austria-Hungary, USSR, Poland). The authors of the essays (historians and philologists from Russia, Belarus, Ukraine) consider the national and cultural policy of the authorities towards Belarusians and Ukrainians from new theoretical and methodological positions. Scientists note that specific manifestations of educational policy depended on a complex set of interrelated factors (the representation of power and intellectual elites about the ethnic population; the need to combat unwanted cultural influences (for example, with Polish influence in the Belarusian provinces of the Russian Empire); the activity of representatives of the Belarusian and Ukrainian national movements; the reaction of Belarusian and Ukrainian inhabitance to educational practices). Most of the articles are distinguished by a high scientific level and have a solid source base. Many materials and archival documents are introduced into scientific circulation for the first time. At the same time, the reviewers identified points that could be improved in the future editions of the book. For example, they note a simplified understanding by scientists of the influence of the ideology of Western Russianness (Zapadnorusizm) and the ethno-confessional character of the inhabitants of the Belarusian provinces of the Russian Empire. They pay attention to the lack of analysis of the activities of representatives of the Russophile trend in the national and cultural life of Galicia, insufficient attention to the study of the attitude towards activities in the educational sphere of the population of the Russian-Belarusian and Russian-Ukrainian borderlands during the period of Soviet indigenization (Korenizatsiya). The articles in the book under review can give impetus to further research into various aspects of the national and cultural life of the peoples of Eastern Europe.

dc.relation.ispartofseries

value: Studia Slavica et Balcanica Petropolitana;Volume 32; Issue 2

value: Education

value: Belarusian language

value: Ukrainian language

value: educational policy


dc.contributor.author

value: Noskov, Sergei N.

value: Markova, Olga L.

value: Zaritskaya, Ekaterina V.

value: Yeremin, Gennady B.

value: Isaev, Daniel S.

value: Mironenko, Olga V.

dc.identifier.citation

value: Noskov S.N., Markova O.L., Zaritskaya E.V., Yeremin G.B., Isaev D. S., Mironenko O.V.  Determination of priority air pollutants at the sites of sludge disposal of sewage treatment plants when  establishing a sanitary protection zone. Vestnik of Saint Petersburg University. Medicine, 2022, vol. 17,  issue 4, pp. 305–314. https://doi.org/10.21638/spbu11.2022.406 (In Russian)

dc.description.abstract

value:
Currently, various handling processes are used for sewage sludge treatment in order to reduce
the sediment volume and amount, and aerobic stabilization of sediment. Nevertheless, sludge
sites continue to pose a threat to the population sanitary-epidemiological well-being as an un pleasant odors source. Objective: determination of the composition of the specific pollutants
in the emissions generated at the Zelenogorsk’s sludge sites to carry out further work on health
risk assessment according to the olfactory exposure. The study materials were selected sludge
samples before entering the sludge fields. Methods used: gas chromatography with a mass
spectrometric detector, high-performance liquid chromatography with an ultraviolet detec tor based on a diode matrix, fluorimetry, and capillary electrophoresis. A total of 60 gas-air
samples were analyzed. As an experiment result, 9 classes of compounds were found. On the
second day, the aromatic compounds’s predominance in emissions is noted 83% of the total
emission (181.4 mg/kg of sediment dry weight). On the 10th day — the nitrogen-containing
compounds predominance (65%) and organic acids (32.5%), the aromatic compounds con tent is 1.2% (total emission — 75.5 mg/kg). The priority chemical compounds in emission and
specific substances that may additionally be included in the atmospheric air quality studies
program when establishing a sanitary protection zone have been identified.

dc.language.iso

value: ru

dc.publisher

value: St Petersburg State University

dc.relation.ispartofseries

value: Vestnik of St Petersburg University. Medicine;Volume 17; Issue 4

dc.subject

value: sewage sludge

value: sewage treatment plants

value: sludge sites

value: pollutants

value: foul-smelling substances

dc.type

value: Article

format: Adobe PDF


dc.contributor.author

value: Yashin, Sergei M.

value: Shubik, Yuri V.

dc.identifier.citation

value: Yashin S.M., Shubik Yu.V. Atriopathy and atrial fibrillation. Part I. Vestnik of Saint Petersburg University. Medicine, 2022, vol. 17, issue 4, pp. 254–271. https://doi.org/10.21638/spbu11.2022.402  (In Russian)

dc.description.abstract

value: Atrial fibrillation is the most common supraventricular tachycardia, the incidence of which increases with age. This arrhythmia is the consequenсe of multiple cardiac and noncardiac pathology. The most significant side effects of atrial fibrillation are thromboembolic complications. It is generally accepted that the source of these embolisms is a thrombus in the left atrial appendage. However, the risk of thromboembolism also occurs after the onset of atrial rhythm, which can lead to a more complex hemostasis mechanism in this disease. There is no unambiguous definition of the relationship between structural and functional changes in the atria and atrial fibrillation, which manifests itself in the appearance of treatment. Essential methods of catheter operations in patients with atrial fibrillation do not take into account the peculiarities of the rhythm mechanism, which has an influence on the treatment’s results. The first part of the review reflects the anatomy, histology, and physiology of atria, their main cellular elements, and electrophysiological features. The main experimental and clinical models of arrhythmia are described; as factors provoking atrial fibrillation and mechanisms of its stabilization. The analysis of electrophysiological and structural remodeling. The concepts of atriopathy and atrial cardiomyopathy are discussed, and classification is given. The mechanisms of hemostasis disorders and possible directions of correction are presented.

dc.subject

value: atriopathy

value: inflammation

value: stroke

value: cardiomyopathy

value: cardiomyocyte

value: left atrium

value: pathogenesis

value: remodeling

value: thromboembolism

value: atrial fibrillation

value: fibrosis


dc.contributor.author

value: Nazarova, Varvara V.

value: Churakova, Iya Yu.

value: Kurilov, Bogdan N.

value: Titova, Daria D.

dc.identifier.citation

value: Nazarova V. V., Churakova I. Yu., Kurilov B. N., Titova D. D. 2022. Consumer  behaviour towards Russian brands of foreign FMCG companies. Russian Management Journal 20 (4): 546–565. https://doi.org/10.21638/spbu18.2022.405

dc.description.abstract

value:
Goal: this study aims to explore the existent theoretical concepts that may explain the behavioural response of consumers in relation to various cross-categorical fast-moving consumer goods brands that constitute brand portfolios of international FMCG corporations. Namely, these concepts include the halo error, foreign-local bias, country-of-origin effects. The research grasps if changes in the consumer attitude exist when it comes to misidentification of brands by country of origin (the outcome from foreign-local bias), which is resulted by the occurrence of halo effect.

Methodology: the research suggests quantitative methodology to explore the customer viewpoints. The data was collected through online structured interviews with ordinary visitors of grocery shopping malls, analysed and interpreted under the structural equation modelling statistical technique.

Findings: from the customer standpoint, the research suggests that Russian consumer experience halo effect from the pseudo-local FMCG brands. Besides, this cognitive bias is shown to be positively related with the age of consumers, meaning that the older consumers are exposed to experience halo effect. The misidentification of FMCG brands by country of origin is directly influenced by the occurrence of halo effect among domestic consumers, but is not shown to drive their subconscious orientation towards pseudo-local FMCG brands.

Originality and contribution the authors: the research helps to identify the system of relationships that could explain the consumers’ subjective orientation towards pseudo-local FMCG brands. As not all the hypothesised paths being supported by the data, the significant relationships on consumers’ attitudes are identified.

dc.language.iso

value: en

dc.publisher

value: St Petersburg State University

dc.relation.ispartofseries

value: Russian Management Journal;Volume 20; Issue 4

dc.subject

value: FMCG brands

value: the halo effect

value: the pseudo-local brands

value: the foreign-local bias

value: the country-of-origin effects


dc.contributor.author

value: Magomedov, Khamzat K.

value: Fedorova, Ekaterina A.

value: Tovanova, Anna A.

value: Obukhov, Denis A.

dc.identifier.citation

value: Magomedov Kh. K., Fedorova E.A., Tovanova A.A., Obukhov D.A. Approximate standards for the generation of class B medical waste at the present stage. Vestnik of Saint Petersburg University. Medicine, 2022, vol. 17, issue 4, pp. 295–304. https://doi.org/10.21638/spbu11.2022.405 (In Russian)

dc.description.abstract

value:
Closely related to the development of the healthcare system is the trend toward an increase in
medical waste. Updating the indicative standards for the generation of class B medical waste is necessary for the correct operation of all sequential processes for handling medical waste.
Predicting the amount of class B waste generation makes it possible to optimize work in medi cal organizations and reduce risks to the health of staff and patients. In this work, we noted a
significant increase in the generation of medical waste of class B in multidisciplinary hospitals
and Outpatient clinics in St. Petersburg and the Leningrad Region, as well as an increase in the
fraction of plastic in the composition of medical waste, a statistical evaluation of the results
was carried out and indicative standards for the formation of medical waste of class B were
proposed. data on indicative standards for waste generation in departments are extremely
relevant due to the different fractional and morphological composition of waste, an extremely
high potential infectious risk (including the spread of multidrug-resistant strains) in a number
of them, for example, in intensive care units, hemodialysis, and surgery.

dc.description.sponsorship

value: The study was supported by a grant from professor E.E.Eichwald.

dc.language.iso

value: ru

dc.relation.ispartofseries

value: Vestnik of St Petersburg University. Medicine;Volume 17; Issue 4

dc.subject

value: class B medical waste

value: disposal technologies

value: medical waste management

value: plastic

value: multidisciplinary hospital

dc.title

value: Article


dc.contributor.author

value: Ulitovskiy, Sergej B.

value: Kalinina, Olga V.

value: Pankrateva, Lidiya I.

value: Soloveva, Elena S.

value: Fok, Natalia K.

dc.identifier.citation

value: Ulitovskiy S.B., Kalinina O.V., Pankrateva L.I., Soloveva E. S., Fok N.K. The relationship  between the preservation of dental preventive knowledge in the adult population and their hygienic  status. Vestnik of Saint Petersburg University. Medicine, 2022, vol. 17, issue 4, pp. 272–280.  https://doi.org/10.21638/spbu11.2022.403 (In Russian)

dc.description.abstract

value:
To improve and maintain dental health among the population today, the leading task of pri mary prevention is to increase motivation in individual oral hygiene. The low level of oral
hygiene comes to the fore, which forms the hygienic and dental status, leading to an increase
in the prevalence of caries and inflammatory periodontal diseases in the population. The
survival of dental prophylactic knowledge, taking into account the hygienic and periodontal
status in the adult population, was studied to determine the need for dental hygiene educa tion and upbringing. Preservation of dental hygiene knowledge determines the level of dental
health in the adult population. The leading feature of the prevention of major dental diseases
among various groups is the constant repeated “hygiene lessons” in the adult population, tak ing into account their dental status, which maintains a higher level of preservation of preven tive knowledge and motivation to take the necessary actions. The ongoing monitoring made it
possible to correct the preventive focus of sanitary and educational work, which increased the
level of dental health among the population.

dc.publisher

value: St Petersburg State University

dc.subject

value: preservation of preventive knowledge

value: hygiene lessons

value: dental health

value: prevention of dental diseases


dc.contributor.author

value: Grusha, Aleksandr Ivanovich

dc.identifier.citation

value: Grusha, Aleksandr Ivanovich. About indications and characters of changes in Cyrillic writing in the Polish Kingdom and the Grand Duchy of Lithuania at the turn of the 14th and 15th centuries, in Studia Slavica et Balcanica Petropolitana. 2022. № 2. Pp. 53-59. DOI https://doi.org/10.21638/spbu19.2022.204

dc.description.abstract

value: The article proves that such properties of writing as its ability to develop, the formation of an attitude to consistent compliance with the requirements of rational optimization in the further search of acceptable forms, dialogicity, allow us to determine the facts that paleographers have been trying to find for a long time: about the connection of writing with “socio-economic and political processes”. The metamorphoses of writing that took place in the Grand Duchy of Lithuania at the turn of the XIV and XV centuries should be put on a par with the changes in social and political order in this state. The society of this time was retreating from traditions and opening up to innovations. In such an action as the transition to cursive writing, you can see the “trigger” mechanism of all further changes associated with the constitution of this graphic type of writing. This mechanism is the “emancipation” of writing, which opened up a wide space for him to maneuver, search and develop. The following assumption is made. The system-forming processes in writing are not self-sufficient; they are closely related to changes in the configurations of society, authority and culture, under the influence of the same factors and causes.

dc.language.iso

value: ru

dc.relation.ispartofseries

value: Studia Slavica et Balcanica Petropolitana;Volume 32; Issue 2

value: Grand Duchy of Lithuania

value: paleography

value: dialogic writing

value: sources studies

value: optimization of writing

value: skoropis’

value: medieval studies

value: studies of historical writing


dc.contributor.author

value: Smirnova, Svetlana Sergeevna

dc.identifier.citation

value: The second international St. Petersburg historical forum, in Studia Slavica et Balcanica Petropolitana. 2022. № 2. Pp. 248-250.

dc.description.abstract

value: The article highlights issues related to the problems of studying the history, which were discussed by domestic and foreign researchers in the framework of the Second international Petersburg historical forum (St. Petersburg, Russia, October 10–16, 2022).

dc.publisher

value: St Petersburg State University

value: historiography

value: conference

value: Petersburg historical forum

dc.type

value: Article


dc.contributor.author

value: Makeeva, Elena Yu.

value: Popov, Konstantin A.

value: Dikhtyar, Anna A.

value: Sudakova, Anastasia V.

dc.identifier.citation

value: Makeeva E. Yu., Popov K. A., Dikhtyar А. A., Sudakova А. V. 2022. Board of directors characteristics: How they are related to ESG rankings and value of Russian companies. Russian Management Journal 20 (4): 498–523. https://doi.org/10.21638/spbu18.2022.403 (In  Russian)

dc.description.abstract

value:
Goal: the goal of this paper is to determine effects of board of directors characteristics on corporate value creation, taking into account ESG (Environmental, Social, Governance) principles.

Methodology: the methodological tool applied in this study is an econometric analysis of panel data for 48 Russian non-financial public companies with ESG score provided by Thomson Reuters Eikon in the period from 2015 to 2020.

Findings: we have found a non-linear impact of board size on ESG performance, and significant positive impact of board independence on both ESG performance and firm market value. We also find that higher board gender diversity leads to higher corporate ESG score and market value, while higher share of foreign directors does not affect significantly these indicators of performance of Russian companies. Board sustainability committee enhances both corporate ESG performance and market value, board strategy committee contributes to ESG score’s increase as well.

Originality and contribution of the authors: our study contributes to the development of academic literature devoted to corporate governance effects on firm’s performance on understudied market, in the context of growing demand for corporate sustainability. Application of our findings will allow to formulate the best practices of corporate governance for market value creation of Russian companies basing on ESG principles.

dc.language.iso

value: ru

dc.relation.ispartofseries

value: Russian Management Journal;Volume 20; Issue 4

dc.subject

value: Board of Directors

value: Corporate Governance

value: Russian companies

value: Value Creation

value: Sustainable Development

value: ESG


dc.contributor.author

value: Komissarov, Alexei G.

value: Bryzgalin, Victor A.

dc.identifier.citation

value: Komissarov A. G., Bryzgalin V. A. 2022. The specifics of the top managers competencies in Russia: Case of the contest “Leaders of Russia”. Russian Management Journal 20 (4):  524–545. https://doi.org/10.21638/spbu18.2022.404 (In Russian)

dc.description.abstract

value:
Goal: to identify differences in the level of competency development among senior management personnel in Russia compared to other job groups.

Methodology: the empirical research was based on competency assessments from the Leaders of Russia competition and consisted in identifying factors determining the level of competency development (including the role of the position held) using regression analysis.

Findings: we show that when controlling for other factors senior management cadres (“top executives”) have higher values of intellectual abilities and managerial potential than other job groups, higher scores on social and communication competencies, leadership motivation and perseverance, but lower scores on decision-making speed. The size of an organization is one of the key factors related to the level of competence development in different job groups: on average, managers of large organizations have a higher level of competence development than managers of small organizations.

Originality and contribution of the authors: such an assessment of the level of competence development of senior management staff in Russia on a sample of more than several thousand people has been carried out for the first time. The results obtained contribute to the literature on leadership theory and the upper echelons theory and can be used to improve training and professional development programs for top management personnel.

dc.publisher

value: St Petersburg State University

dc.subject

value: competencies

value: management

value: upper echelons theory

value: CEO

value: leadership competencies

value: leadership


dc.contributor.author

value: Kleiner, George B.

dc.identifier.citation

value: Kleiner G. B. 2022. Information theory of economic organizations management  factors. Russian Management Journal 20 (4): 461–481. https://doi.org/10.21638/spbu18.2022.401  (In Russian)

dc.description.abstract

value:
A new direction in the modeling of economic systems based on the analogy between the production and management activities of economic systems has been developed in the article. The division of managerial information into historical and geographical ones, reflecting, respectively, the movement of the system in time and space, has been substantiated. The role of these types of information in the management of economic organizations, including enterprises, has been revealed.

Goal: determination of interaction mechanisms of basic subsystems of the economic system (object, process, project and environment subsystems) during the functioning of the system.

Methodology: application of methods of spatio-temporal system analysis and the theory of tetrads for determining the routes of movement of historical and geographical information in order to manage the functioning of an economic organization.

Findings: the mechanisms of generation, storage, use and dissemination of historical and geographical information between the components of the tetrad as a structural and functional model of the economic system have been identified. The results of the analysis have been formulated in the form of requirements for the system management of industrial enterprises.

Originality and contribution of the author: the novelty of the approach is due to the originality of the system typology of types of management information. This typology makes it possible to harmonize the functional structure of subsystems with the aggregated information structure of system management.

dc.description.sponsorship

value:
The research was accomplished with the support of the Russian Foundation for Basic Research (project
No. 20-010-00835).

dc.language.iso

value: ru

dc.relation.ispartofseries

value: Russian Management Journal;Volume 20; Issue 4

dc.subject

value: organization

value: system

value: information

value: system management

value: spatio-temporal analysis

value: systems economic theory

dc.title

value: Article


dc.contributor.author

value: Kozhukhar, Vladimir G.

dc.identifier.citation

value: Kozhukhar V.G. In the wake of one publication, or about the attitude to the history of  science as a science. Vestnik of Saint Petersburg University. Medicine, 2022, vol. 17, issue 4, pp. 315–326.  https://doi.org/10.21638/spbu11.2022.407 (In Russian)

dc.description.abstract

value:
The article is a historical investigation devoted to reliability of Professor T.A.Ginetsinskaya’s
publication about the circumstances of Professor E. S.Danini’s speech (December 1954) criti cizing O.B.Lepeshinskaya’s “new cellular theory”. After analyzing scientific sources, mem oirs of contemporaries of the described events and comparing the dates, the author proves
that E. S.Danini’s speech in the context given in T.A.Ginetsinskaya’s article could not have
taken place in reality. It took place in other circumstances and was not so dramatic. This is
indicated by the documented memories of eyewitnesses and participants of the meetings, as
well as materials of speeches by members of the Society of Anatomists, histologists and em bryologistsat the Institute of Experimental Medicine (including E. S.Danini). In addition, it
is shown that criticism of Lepeshinskaya’s “new cellular theory” had begun much earlier than
December 1954. The article provides data of numerous critical speeches about Lepeshinskaya’s
theory at various meetings in 1953 and 1954. Criticism of Lepeshinskaya’s views by the end of
1954 ceased to pose a danger to critics, and therefore the drama of the situation described in
Ginetsinskaya’s article does not seem to correspond to the realities of that time.

dc.publisher

value: St Petersburg State University

dc.relation.ispartofseries

value: Vestnik of St Petersburg University. Medicine;Volume 17; Issue 4

dc.subject

value: T. A. Ginetsinskaya

value: E. S. Danini

value: O. B. Lepeshinskaya

value: new cell theory

value: history of science


dc.contributor.author

value: Khlynin, Eduard V.

value: Korovkina, Natalia I.

dc.identifier.citation

value: Khlynin E. V., Korovkinа N. I. 2022. Information and communication technologies  in the management of fixed assets of the enterprise. Russian Management Journal 20 (4):  566–584. https://doi.org/10.21638/spbu18.2022.406 (In Russian)

dc.description.abstract

value:
Goal: substantiation of the demand for external and internal information and communication technologies and the formation of an organizational and economic mechanism for managing the company's fixed assets, which provide more effective interaction in the “man — means of labor” system.

Methodology: the use of theoretical and methodological apparatus for building an organizational and economic mechanism for managing fixed assets of an enterprise based on the application of integrated and systematic approaches in information and communication technologies.

Findings: methods of assessing the level of development of information and communication technologies based on the construction of chains of the same and different-quality elements of the structure have been developed; a method of comparing time indicators designed to establish the level of need, security, use and development of information and communication technologies has been proposed.

Originality and contribution of the authors: the concept of complexity of the created chain of elements of the structure of information and communication technologies is introduced into consideration, the value of which depends on the complexity of each element involved in its formation; methods for assessing the level of development of information and communication technologies are developed; the most preferred values for the need, security and use of information and communication technologies are established.

dc.language.iso

value: ru

dc.relation.ispartofseries

value: Russian Management Journal;Volume 20; Issue 4

value: level of development

value: chain of interrelated elements

value: complexity

value: need

value: security

value: use

value: fixed assets


dc.contributor.author

value: Naidenova, Iuliia N.

value: Shalaeva, Ekaterina V.

dc.identifier.citation

value: Naidenova I. N., Shalaeva E. V. 2022. Economic policy uncertainty under the conditions  of sanctions: Impact on the Russian companies’ cash holdings. Russian Management Journal 20 (4): 482–497. https://doi.org/10.21638/spbu18.2022.402 (In Russian)

dc.description.abstract

value:
Goal: to analyze the impact of economic policy uncertainty on cash holdings of Russian manufacturing companies and the factors that moderate this impact, taking into account sanctions restrictions.

Methodology: during the study, regression models were evaluated based on data from more than 1 400 Russian manufacturing companies for the period 2014–2020, using the least square method on the transformed data (within estimators).

Findings: it was found that the uncertainty of economic policy leads to an increase in cash holdings, which means a decrease in the level of investment in the development of the company and payments to owners, while this effect is stronger for companies subject to sanctions and companies without state participation, while large companies are less sensitive to policy uncertainty than medium-sized enterprises.

Originality and contribution of the authors: the study for the first time examined the impact of economic policy uncertainty on cash holdings of Russian companies, taking into account the imposed sanctions.

dc.description.sponsorship

value:
This paper is an output of a research project implemented as part of the Basic Research Program at the
National Research University Higher School of Economics (HSE University).

dc.publisher

value: St Petersburg State University

dc.relation.ispartofseries

value: Russian Management Journal;Volume 20; Issue 3

value: economic uncertainty

value: policy uncertainty

value: cash holdings

value: sanctions

value: Russian companies

dc.type

value: Article


title: ЭКСПЕРТНОЕ ЗАКЛЮЧЕНИЕ по информационным материалам запроса прокуратуры Василеостровского района Санкт-Петербурга (Отдельные фрагменты исключены из текста опубликованного заключения в целях обеспечения соблюдения требований законодательства)

dc.description.abstract

value: abstrsct

dc.language.iso

value: ru

dc.subject

value: госорганы

value: прокуратура

value: информационный материал

value: оскорбление, унижающее честь и достоинство

value: высказывание в неприличной форме

dc.title

value: Other


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: МВД России

value: оправдание публичных действий, выражающих явное неуважение к обществу

value: оскорбление религиозных чувств

value: признаки унижения группы по признакам религиозной, расовой или национальной принадлежности

value: высказывания, побуждающие к действиям, имеющим массовый характер


title: Humic acids isolated from postpyrogenic soils of forest-steppe region: elemental and molecular composition by 13C-NMR spectroscopy

dc.contributor.author

value: Chebykina, Ekaterina

value: Abakumov, Evgeny

dc.description.abstract

value:
Organic matter plays an important role in global carbon cycle of planet. Forest fires are one
of the most significant types of disturbances on a global scale, affecting biogeochemical cycles
and global warming. Pyrogenic components of soil organic matter are practically not taken into
account when assessing the implications of global climate changes on SOM sequestration rate
and its stability. Therefore, there are global changes in humosphere under unpredictable fires
effect, and fingerprints of this key factor on the molecular structure of SOM is underestimated.

dc.language.iso

value: en

dc.type

value: Presentation


title: Essential role of forest fires in humic acids structure and composition alteration

dc.identifier.citation

value: Chebykina, E.; Abakumov, E. Essential Role of Forest Fires in Humic Acids Structure and Composition Alteration. Agronomy 2022, 12, 2910. https://doi.org/ 10.3390/agronomy12122910

dc.description.abstract

value: Pyrogenic components of soil organic matter are practically not taken into account when assessing the implications of global climate changes on the SOM sequestration rate and its stability. In this regard, both the amount and structural stability of SOM were investigated for postpyrogenic forest–steppe environments. Mature unaffected by fire Psamment Entisols were investigated in comparison with same soil strongly affected by surface and crown fires in 2010 in Tolyatti city. This article discusses postpyrogenic succession when comparing the results of field works in 2010 with 2020. The elemental composition of humic acids as well as 13C NMR spectra were investigated for the studied humic acids. Moreover, for the first time ever, integrated indicators of HAs’ molecular composition were presented for postpyrogenic soils. The data obtained showed that there are significant changes in the structural organization of organic matter as a result of forest fires. A simultaneous decrease in the H/C and O/C atomic ratios was identified as a result of fire, which indicates a slight loss of oxygen-containing functional groups, while the aromaticity degree of molecules increases. An increase in the content of oxygen-containing groups in the HA molecules was shown for 10 years after the fires, which was accompanied by the oxidation of the HA molecule with the same increase in the aromaticity degree of the HA molecule. The HA molecules of 2020 turned out to be more resistant to environmental factors compared to analogues in 2010. As a result of fires, the aromaticity degree of HAs molecules significantly increases.

dc.description.sponsorship

value:
А grant from the President of the Russian Federation for young
PhDs No. MK-4596.2022.1.4.

dc.publisher

value: MDPI

dc.relation.ispartofseries

value: Frontier Studies in Composition of Humic Substances and Soil Organic Matter;2910

dc.subject

value: wildfire

value: postpyrogenic succession

value: soil organic matter

value: 13C-NMR spectroscopy

value: crown fire

value: surface fire

dc.title

value: Article


dc.contributor.author

value: Marchenko, J

value: Khaitov, V

value: Katolikova, M

value: Sabirov, M

value: Malavenda, S

value: Gantsevich, M

value: Basova, L

value: Genelt-Yanovsky, E

value: Strelkov, P

dc.description.abstract

value: Information on quantitative samples of Tyuva mussels used in the study "Taxonomically mixed blue mussel Mytilus populations are spatially heterogeneous and temporally unstable in the subarctic Barents Sea" is given in the file Tyuva mussels_raw data_summary table.xls. Individual data on genotype, age, and morphotype of genotyped mussels from Tyuva used in the study "Taxonomically mixed blue mussel Mytilus populations are spatially heterogeneous and temporally unstable in the subarctic Barents Sea" is given in the file Tyuva mussels_raw data_Ptros by PT.xls

dc.description.sponsorship

value:
This study was supported by Russian Science Foundation, Grant Number
19-74-20024

dc.title.alternative

value: R scripts & input file “data_Tyuva mussels”

dc.type

value: Data

filename: Tyuva mussels_raw data_Ptros by PT.xlsx

format: Microsoft Excel XML

filename: Tyuva mussels_raw data_summary table.xlsx

filename: data_Tyuva mussels.xlsx

filename: TYUVA MUSSELS.R

format: Unknown


title: Estimation of carbon stocks and stabilization rates of organic matter in soils of the "Ladoga" carbon polygon

dc.contributor.author

value: Поляков, Вячеслав Игоревич

value: Абакумов, Евгений Васльевич

value: Низамутдинов, Тимур Ильгизович

dc.description

value:
Seventh International Conference of
the CIS IHSS on humic innovative technologies
"Humic substances
and technologies for resilience"
(HIT-2022)

dc.description.abstract

value:
Soil organic matter (SOM) is a major component of the pedosphere. Due to the climate
change, SOM may be subject to active biodegradation processes, land transformation and
become a major source of greenhouse gases in the atmosphere. However, the overall effect of
climate change on SOM content varies by region and soil type. Climate change can have
catastrophic consequences for SOM, soils, and landscapes in general. Nowadays, different
natural zones of our planet are subject to landscape degradation. Sustainable soil management
aimed at increasing the content of SOM can increase the process of carbon sequestration,
thereby contributing to the mitigation of climate change. Establishment of a network of carbon
polygons for monitoring climatic processes as well as emission and deposition of carbon
compounds in various ecosystems is one of the priority tasks in the field of climate and
biosphere conservation as a whole. The most important area of work on the carbon polygon is
the problem of assessing the reservoir and trends of stabilization of organic matter in different
natural zones and ecosystems. By stabilization we mean the process by which SOM is formed
resistant to biotic and abiotic influences and leads to an increase in the time of its turnover in the
environment. The opposite of this process is destabilization, during which SOM components
become available for use by microorganisms. This work presents the results of the study of the
soil sections of the "Ladoga" carbon polygon. The Ladoga carbon polygon will be located in
Voeykovo village, the south of Vsevolozhsk district of Leningrad region of Russia. The area is
represented by fluvioglacial eskers relief form, in front of eskers uplands the Holocene lowland of
Ladoga lake is located which is merged with current Ladoga waters edge. In the location the
Folic Podzol (Arenic) and Fibric Histosol were considered. These soils are widely represented in
the southern taiga subzone and can be used as benchmark monitoring soil sections. As a result
of the analysis of chemical parameters it was revealed that Fibric Histosol and Folic Podzol
(Arenic) are characterized by an acidic reaction of pH, pronounced podsolization and peat
accumulation. In Fibric Histosol stores a significant amount of SOM up to 42.95 kgC/m2
. In the
analyzing of the molecular composition of humic acids (HAs) extracted from the studied soils, it
was found that HAs from Fibric Histosol were characterized by a relatively high content of
aromatic structural fragments (51.28-56.83 %), while in Folic Podzol (Arenic) aliphatic structural
fragments prevailed (56.23-63.08 %). The increase of aromatic structural fragments in the HAs
composition indicates the stabilization of the SOM and an increase its turnover time in the
environment. The creation of a monitoring network will make it possible to identify the main
trends of SOM accumulation, to determine the conditions under which accumulation occurs, and
to calcu-late its contribution to climate change on the planet.
This work was supported by the Ministry of Science and Higher Education of the Russian
Federation in accordance with agreement № 075-15-2022-322 date 22.04.2022 on providing a
grant in the form of subsidies from the Federal budget of Russian Federation. The grant was
provided for state support for the creation and development of a World-class Scientific Center
"Agrotechnologies for the Future".

dc.language.iso

value: en

dc.publisher

value: Non-Commercial Partnership "Center for Biogenic Resources "Humus Sapiens"" (NP CBR "Humus Sapiens")

dc.subject

value: humic substances

value: 13C NMR

dc.title

value: Thesis


dc.description.abstract

value: Abstract

dc.language.iso

value: ru

dc.subject

value: госорганы

value: МВД России

value: информационный материал

value: признаки организации массовых беспорядков

value: склонение

value: вербовка

value: вовлечение лица в совершение массовых беспорядков

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


dc.description

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

dc.subject

value: информационный материал

value: признаки возбуждения розни (вражды, ненависти)

value: признаки угрозы применения насилия

value: признаки побуждения к действиям

value: социальная группа


value: информационный материал

value: признаки призыва к враждебным действиям

value: пизнаки направленности на унижение достоинства человека по признаку национальности


value: информационный материал

value: оскорбление в адрес государственных лиц, Правительства

value: заведомо ложные сведения

value: сведения, подрывающие репутацию

value: сведения, порочащие честь и достоинство


title: Кто был никем, тот станет всем

dc.contributor.author

value: Зотова, Анастасия Валерьевна

dc.description.abstract

value: Интервью газете Комсомольская правда

dc.publisher

value: Комсомольская правда

dc.title

value: Кто был никем, тот станет всем

dc.type

value: Article


title: Переводы. Шекспир

dc.contributor.author

value: Татьяна Петровна, Знамеровская

value: Редактор Анна Валентиновна, Морозова

dc.description

value:
The book is a publication of manuscripts of the major Russian art critic T. Znamerovskaya (1912-1977). Znamerovskaya wrote poetry all her life, and also translated many other poets of the past and present. She was especially proud of her translations of Shakespeare. Professor N. Ya. Berkovsky, poet S. P. Antonov spoke of them with great praise.
The author of textual training volume, introduction, and redactor of volume is A. V. Morozova.
The book may be of interest to art critics as a material for the biography of T. Znamerovskaya, literary critics as a professional translation of Shakespeare’s poetry, which can compete with Marshak’s translations.
The book is a serial publication, following the book "T.P. Znamerovskaya. Memories. Lyrics (Love and life. Poems). Under redaction by Morozova A.V." published in 2020 with support of RFBR (project №20-19-40009 d_npi), and behind the book “T. P. Znamerovskaya. Only about personal things”, published in 2022 with the support of the RFBR (project №21-112-40006). St.-Petersburg, St.-Petersburg University ed., 2022. Ed. By A.V. Morozova.

dc.description.abstract

value:
Книга представляет собой публикацию рукописи переводов Шекспира крупного отечественного искусствоведа Т. П. Знамеровской (1912–1977). Знамеровская всю жизнь писала стихи, а также много переводила других поэтов прошлого и современности. Своими переводами Шекспира она особенно гордилась. О них с большой похвалой отзывались профессор Н. Я. Берковский, поэт С. П. Антонов.
Автор текстологической подготовки тома, предисловия, составитель и редактор А. В. Морозова.
Книга может быть интересна искусствоведам как материал к биографии Т. П. Знамеровской, литературоведам как профессиональный перевод поэзии Шекспира, соперничающий с переводами Маршака.
Книга является серийным изданием, следующим за изданной в 2020 г. при поддержке РФФИ (проект № 20-19-40009 д_нпи) книгой "Знамеровская Т. П. Воспоминания. Лирика (Любовь и жизнь. Стихи). Под ред. А. В. Морозовой", и за изданной в 2022 г. при поддержке РФФИ (проект № 21-112-40006) книгой «Знамеровская Т. П. Только о личном. Изд-во Санкт-Петербургского университета, 2022. Под ред. А. В. Морозовой».

dc.publisher

value: издательство "Радуга"

dc.subject

value: Знамеровская Т. П., переводы, Шекспир, сонеты, английская поэзия XVI века

dc.title

value: Переводы. Шекспир

value: Book

filename: Знамеровская_Переводы_Шекспир_с ISBN.pdf


dc.description.abstract

value: Abstract

dc.language.iso

value: ru

dc.subject

value: госорганы

value: информационный материал

value: признаки оправдания деяний

value: публичный призыв к осуществлению террористической деятельности

value: публичное оскорбление представителя власти

value: призывы к осуществлению экстремистской деятельности


title: ЭКСПЕРТНОЕ ЗАКЛЮЧЕНИЕ по информационным материалам запроса прокуратуры Приморского района Санкт-Петербурга (Отдельные фрагменты исключены из текста опубликованного заключения в целях обеспечения соблюдения требований законодательства)

value: прокуратура

value: высказывания

value: оскорбление, унижающее честь и достоинство

value: оскорбление, выраженное в неприличной форме


title: Базы данных и операционные системы для бакалавриата

dc.contributor.author

value: Помыткина, Татьяна Борисовна

dc.description.abstract

value:
Методическое пособие предназначено для студентов СПбГУ, специализирующихся по направлению 01.03.03 Механика и математическое моделирование.
Задачи практикума: Изучение студентами основ построения реляционных СУБД, освоение практических приемов проектирования, разработки и использования баз данных.

dc.type

value: Learning Object

filename: БД и ОС для бакалавриата.pdf


title: Dynamical Models of Plasticity with Nonmonotonic Deformation Curves for Nanomaterials

dc.contributor.author

value: Selyutina, Nina

value: Borodin, Elijah

value: Petrov, Yuri

dc.description.abstract

value:
Nanomaterials are widely used in different fields, such as microelectronics, industry, and
nanocomposites, and they can exhibit unstable deformation behaviour depending on the strain
rates. Under strain rates of 10^-4–10^-1 s^-1, the deformation of nanomaterials, unlike the quasi-static
deformation of micromaterials, is characterized by the presence of the rate sensitivity as a possible
scale phenomenon in dynamic plasticity. In this paper, the relaxation model of plasticity for the
prediction of deformation curves at different strain rates is used. It allows us to comprehensively
study the effects of strain hardening in a wide range of deformation conditions for coarse-grained
materials and nanomaterials. Considering the plastic deformation of the nanosized samples in
the early stages, dynamical softening, associated with a generation of new defects, and dynamic
hardening, are crucial. The proposed model, using one parameter or the classical hardening law as
an example of nanosized gold whisker crystals, tungsten single-crystal pillars, and single-crystalline
Au-Ag alloy nanowires, is verified. Calculated sets of parameters of characteristic time, as a parameter
of rate sensitivity of a material, and hardening parameters for different nanomaterials are compared.
It is shown that the characteristic relaxation times for the single-crystal nanomaterials (10^0–10^3 s) are
greater than for the nanostructured materials (10^-6–10^-4 s). Despite the manifestation of dynamics
at different strain rates of nanomaterials, single crystal and nanostructured materials, the proposed
model can be successfully applied to materials with different degrees of hardening or softening.

dc.language.iso

value: en


dc.contributor.author

value: Starchak, Mikhail R.

dc.identifier.citation

value: Mikhail R. Starchak. Quasi-Quantifier Elimination Algorithms and Definability Problems in Arithmetics with Divisibility. PhD thesis, Saint Petersburg State University, 2022.

dc.description.abstract

value:
This thesis is primarily going to focus on the relationship between two important tools
applied in theoretical computer science: quantifier elimination algorithms and the theorem on
decidability of the existential theory of the natural numbers with unit, addition and divisibility.
The questions of definability using the relations, which can be defined in terms of addition and
divisibility of the integers, are directly related to these problems.
In the first chapter, we will introduce the notion of quasi-quantifier elimination (quasi-QE)
algorithm, which is in some sense a generalization of quantifier elimination algorithm. Next, we
construct two quasi-QE algorithms, which form a new decidability proof for the existential theory
of the natural numbers with unit, addition and divisibility. The language of addition and divisibility
is rather rich and difficult to study; in the second part of the thesis, a quasi-QE algorithm is also
used to obtain results about definability in weaker structures. In the third chapter, from such
questions of quasi-elimination we move towards some closely related definability problems.

dc.publisher

value: St. Petersburg University

dc.subject

value: Presburger arithmetic

value: divisibility

value: decidability

value: quantifier elimination

value: definability

dc.title

value: Thesis


title: Экспертное заключение по 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.language.iso

value: ru

dc.subject

value: госорганы

value: МВД России

value: графический материал

value: пропаганда взглядов

value: негативная оценка по признакам гражданства

value: призыв к смене конституционного строя

dc.type

value: Other


title: ЭКСПЕРТНОЕ ЗАКЛЮЧЕНИЕ по информационным материалам запроса прокуратуры Санкт-Петербурга (Отдельные фрагменты исключены из текста опубликованного заключения в целях обеспечения соблюдения требований законодательства)

dc.subject

value: прокуратура

value: информационный материал

value: нарушение территориальной целостности


dc.subject

value: информационный материал

value: признаки возбуждения розни (вражды, ненависти)

value: негативная оценка человека или группы лиц

value: признаки побуждения к действиям

dc.title

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)


title: Экспертное заключение по 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: информационный материал

value: оскорбление религиозных чувств


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

dc.description

value: соответствие имени


dc.description

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

value: информационный материал

value: оскорбление в адрес Президента

value: сведения, подрывающие репутацию


dc.subject

value: информационный материал

value: оскорбление в неприличной форме

value: унижение чести и достоинства

dc.title

value: ЭКСПЕРТНОЕ ЗАКЛЮЧЕНИЕ по информационным материалам запроса прокуратуры Приморского района Санкт-Петербурга (Отдельные фрагменты исключены из текста опубликованного заключения в целях обеспечения соблюдения требований законодательства)


dc.description.abstract

value: abstract

dc.subject

value: высказывания

value: оскорбление в неприличной форме

value: унижение чести и достоинства


value: информационный материал

value: оскорбление в неприличной форме


value: информационный материал

value: ложная информация

value: побуждение к совершению действий

value: негативная оценка


value: информационный материал

value: отрицание фактов

value: Международный военный трибунал

value: Вторая мировая война


value: информационный материал

value: унизительные, оскорбительные характеристики

value: признак принадлежности к расе, национальности, религии

value: пропаганда превосходства


value: информационный материал

value: призыв

value: территориальная целостность

value: стремление к суверенитету


title: ЭКСПЕРТНОЕ ЗАКЛЮЧЕНИЕ по информационным материалам запроса Прокуратуры  Санкт-Петербурга (Отдельные фрагменты исключены из текста опубликованного заключения в целях обеспечения соблюдения требований законодательства)

value: информационный материал

value: неуважение к обществу

value: оскорбление религиозных чувств верующих


title: Экспертное заключение по информационным материалам запроса Комитета имущественных отношений Санкт-Петербурга

value: комитет имущественных отношений Санкт-Петербурга

value: несоответствие работника занимаемой должности


title: ЭКСПЕРТНОЕ ЗАКЛЮЧЕНИЕ по информационным материалам запроса Прокуратуры Санкт-Петербурга  (Отдельные фрагменты исключены из текста опубликованного заключения в целях обеспечения соблюдения требований законодательства)

dc.description.abstract

value: Abstract

dc.language.iso

value: ru

value: информационный материал

value: информация, порочащая честь и достоинство

value: обвинение в совершении преступления


value: госорганы

value: МВД России

value: воинская слава

value: графический материал

value: оскорбление памяти

value: ветеран ВОВ

value: отрицание фактов

dc.title

value: Экспертное заключение по 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 информационным материалам запроса Прокуратуры Российской Федерации по Приморскому району Санкт-Петербурга (Отдельные фрагменты исключены из текста опубликованного заключения в целях обеспечения соблюдения требований законодательства)

dc.subject

value: прокуратура

value: информационный материал

value: оскорбление в неприличной форме

dc.type

value: Other


title: Замечания и предложения по проекту приказа «О продолжительности рабочего времени педагогических работников, отнесенных к профессорско-преподавательскому составу, и о порядке определения учебной нагрузки указанных работников, оговариваемой в трудовом договоре, основаниях ее изменения и случаях установления верхнего предела учебной нагрузки»

dc.contributor.author

value: Васильев, И.А.

value: Дмитрикова, Е.А.

value: Филиппова, М.В.

value: Шевелева, Н.А.

value: Дивеева, Н.И.

dc.subject

value: Минобрнауки России

value: продолжительность рабочего времени

value: профессорско-преподавательский состав

value: педагогические работники

value: учебная нагрузка

value: предел учебной нагрузки

dc.title

format: Microsoft Word XML


dc.contributor.author

value: Ivanov, Vitaly L.

dc.identifier.citation

value: Ivanov V. L. What does God know? Treatise on the “divine knowledge” in the structure of natural theology by Francisco Suárez. Issues of Theology, 2022, vol. 4, no. 3, pp. 408–441.

dc.description.abstract

value:
The article is a study of the late scholastic concept of natural theology based on
the works of Fr. Suárez, Metaphysical Disputations (1597) and De Deo Uno et Trino
(1607), as well as the analysis of the treatise on “divine knowledge” and the demonstration
of its significance in the structure of Suárez’s natural theology. First, the
article explicates the concept of natural theology as the highest and most noble
part of metaphysical science, since the natural theology of Suárez differs both from
supernatural or revelation theology, and from the whole metaphysical knowledge
about being. Second, the thematic content of natural theology is described
in comparison with revelation theology, and the general method of natural theology,
which is determined by the specific limitations of the natural knowledge
of God in this life, is analyzed. At the same time, the most important role of the
traditional scholastic concept of “perfectio simpliciter” as revealing the essence of
Suárez’s method in natural theology is emphasized. Third, we point out the reasons
for the special significance of the treatise on the “divine knowledge/scientia Dei”
contained in section 15 of Suárez’s 30th Metaphysical disputation, and analyze the
structure of this treatise, showing how Suárez’s exposition in it corresponds to the
general “rule of method”. Fourth, the article thematizes the question of the objects
of knowledge of the divine intellect, explains the general division of objects into
three classes and explicates the complex type of connection between the cognition
of the primary and secondary objects of the divine intellect, since it determines the
way God knows finite possible things “in themselves”. Finally, we show a certain
ambivalence in Suárez’s understanding of the reality and objectivity of the objective
being (esse obiectivum) of possible finite essences as a secondary object that
terminates divine knowledge.

dc.description.sponsorship

value:
The article was written with the support of the Russian Foundation for Basic Research
(RFBR), project No. 21-011-44040 “The Philosophical Theology of Francisco Suárez”.

dc.publisher

value: St Petersburg State University

dc.relation.ispartofseries

value: Issues of Theology;Volume 4; Issue 3

dc.subject

value: natural theology of Francisco Suárez

value: revelation theology

value: the method of theology

value: treatise on the divine knowledge

value: the objects of divine knowledge

value: esse obiectivum and esse reale

dc.type

value: Article


dc.contributor.author

value: Katasonov, Vladimir N.

dc.identifier.citation

value: Katasonov V. N. Christian theology and the principle of inertia in physics. Issues of Theology, 2022, vol. 4, no. 3, pp. 352–375.

dc.description.abstract

value:
The article discusses the dependence of the formulation of law of inertia in classical
mechanics on theological concepts of its time. It is shown that in medieval science,
all attempts to solve the problem of motion of a thrown body were made within
the framework of the Aristotelian understanding of motion as the actualization of the possible. Nevertheless, within the framework of the theory of impetus (John
Philopon), medieval natural philosophers came close to the principle of preserving
the amount of movement (Jean Buridan). Galileo, who himself began his work on
the theory of motion with an attempt to mathematize the concept of impetus, in his
mature works proceeded to a principled criticism of the Aristotelian understanding
of motion. However, despite all the Socratic power of the Maevtic method, he failed
to prove the law of inertia. Galileo’s virtuoso dialectic only allowed him to destroy
all objections to the movement by inertia. Descartes gives a positive proof of the
law of inertia, and the basis of his deduction is the theological thesis about the immutability
of God. The law of inertia in the classical mechanics of Descartes and
Newton was closely related to the thesis of the passivity of matter. The article shows
that this thesis echoes the Protestant understanding (Luther’s) of the Christian way
as the cultivation of passive righteousness, where all the activity of salvation is conditioned
only by the action of God.

dc.description.sponsorship

value:
The reported study was funded by the Russian Foundation for Basic Research according
to the research project No. 21-011-44038 “Theology”.

dc.language.iso

value: ru

dc.subject

value: science and theology

value: Protestantism and classical mechanics

value: the law of inertia

value: Jean Buridan

value: Pierre Duhem

value: Anneliese Mayer

value: Galilee

value: Descartes

value: Newton

value: Luther


dc.contributor.author

value: Khramov, Alexander V.

dc.identifier.citation

value: Khramov A. V. “The creature was made subject to vanity not willingly”: The controversy over the influence of the Fall on living nature and the rise of paleontology. Issues of Theology, 2022, vol. 4, no. 3, pp. 376–397.

dc.description.abstract

value:
This paper deals with discussions sparked by the scientific advances of paleontology
in the first half of the 19th century on whether predation and animal death should be
linked to the Fall of man. The history of the belief in paradisiacal vegetarianism and
animal peace, which could be traced back to the writings of Early Church fathers, is
briefly discussed. The paper discusses the argumentation of W. Buckland, E. Hitchcock,
H. Miller, and other men of science and theologians, who accepted the fact,
which became evident from the fossil record, that death and predation prevailed
in the living nature from the beginning, and struggled to conceive it in the Christian
terms. Light is shed on the early pictorial representations of prehistoric life,
which accentuated ferocity of the primeval world in stark contrast to the traditional
view on the prelapsarian harmony between animals. The attitudes of those who
persisted in defending the belief in peaceful animal relationships in paradise despite
of findings of paleontology are explored. The main exponents of the latter view
could be found among the “scriptural geologists”, the early predecessors of presentday
Young Earth creationists. The attempt by the Scottish theologian W. Gillespie
to explain the existence of predation in prehistoric animals by the Fall of Satan is
reviewed. It can be concluded that the revision of Christian doctrine of the earthly
paradise had been well underway in the pre-Darwinian age and was accomplished
with the triumph of evolutionism.

dc.description.sponsorship

value:
The reported study was funded by the Russian Foundation for Basic Research according
to the research project No. 21-011-44042.

dc.publisher

value: St Petersburg State University

dc.relation.ispartofseries

value: Issues of Theology;Volume 4; Issue 3

dc.subject

value: the Fall

value: evolution

value: paradise

value: six days of creation

value: Genesis

value: science and religion


dc.contributor.author

value: Reshchikova, Elizaveta Yu.

dc.identifier.citation

value: Reshchikova E. Yu. Notion of “charisma” in German Catholic thought in the second half of the 20th century. Issues of Theology, 2022, vol. 4, no. 3, pp. 442–459.

dc.description.abstract

value:
The paper examines the main lines of debate on the role of “charisma” in the Church
structure, basing on German Catholic thought in the second half of the 20th century.
Looking into the history of the concept gives grounds to assert that its meaning
originates as the result of juxtaposition of “charisma” and “office”. Moreover, the
Catholic discussion on the role of “charisma” appears to be predetermined by the
Protestant debate around the said opposition, which intensified in the late 19th and
early 20th centuries and revolved around using “charisma” as a means to criticize
the Church. Catholic thought suggests several ways to solve the problem of correlation
between “charisma” and “office”, some of which seem rather radical. Analyzing
German Catholic discourse brings out three basic attitudes towards the role of
charisma in the life of the Church: the simultaneous existence and equivalence of
the charismatic and the institutional structures (based on the works of K. Rahner
and H. U. von Balthasar); the precedence of the charismatic structure over the institutional
(based on the works of H. Küng and G. Hasenhüttl); perceiving the institutional
structure as the final form of incarnation of the Holy Spirit in the world
(represented by H. Schürmann and J. Ratzinger).

dc.language.iso

value: ru

dc.subject

value: charisma

value: office

value: historiography

value: Catholic theology

value: church structure

dc.title

value: Article


dc.contributor.author

value: Svetlov, Roman V.

dc.identifier.citation

value: Svetlov R. V. The concept of eudaimonia in the context of Aristotelian rational theology. Issues of Theology, 2022, vol. 4, no. 3, pp. 342–351.

dc.description.abstract

value:
The Aristotelian doctrine of the knowledge of God offers two models of this process:
by nature and by learning. A careful reading of Nicomachean Ethics allows
us to consider this text as an important source for the Stagirite’s teaching on the
knowledge of God “by nature”. Eudaimonia in Aristotle’s interpretation means life
according to nature. But in human nature the mind is dominant. Therefore, mental
activity is the highest and happiest and filled with the highest pleasure. This is precisely
the basis for the superiority of theoretical life over the practical. Of course,
immortality is unattainable for a person. Man is not only a rational being, but also
a social and bodily one. In its highest manifestation, in the act of thinking, he is
incorporeal. Intellectual contemplation, which allows one to grasp an object in its
being, to see its form, is a way of being outside the body. The kind of being that God undoubtedly possesses. Eudaimonia, contemplation and the most correct, highest
pleasure coincide in it. That is, the highest form of a happy life that is available to
a person is not just divine happiness, but the very happiness of a deity. The person
who has comprehended it will no longer know God through reflection and reason,
but directly, through his own experience.

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 “Formation of rational theology in Antiquity and the
early Middle Ages”.

dc.publisher

value: St Petersburg State University

dc.relation.ispartofseries

value: Issues of Theology;Volume 4; Issue 3

dc.subject

value: Aristotelian ethics

value: teleology

value: theology of Lycaeus

value: eudaimonia

value: Aristotle’s doctrine of pleasure


dc.contributor.author

value: Abdollahi, Mousa

dc.identifier.citation

value: Abdollahi M. An analysis on arithmomancy of multiple numbers in the Qur’an case study: The number thousand (1000). Issues of Theology, 2022, vol. 4, no. 3, pp. 473–491.

dc.description.abstract

value:
Using the history of numbers and their non-numerical connotations among the
ancients, we can interpret numbers as familiar symbols used in daily life of people.
There are some reports that people in various religions and cultures have paid attention
to the symbols of numbers. Commentators have also referred to symbolic
(non-numerical) connotations of numbers, for example the number seven in some
verses of the holy Qur’an. Moreover, some numbers have been used in the Qur’an
that are a multiplication of other numbers. In arithmomancy of these multiple numbers,
their constitutive numbers and the context are also studied. This is done in
addition to finding their independent symbolic meaning. In this study, based on
the method of religio-cultural arithmomancy, the number thousand (1000) and its
multiples in the Qur’an are analyzed. The findings of this study confirm that the
multiple numbers show a comprehensive picture of the symbols of their constitutive
numbers in the Qur’anic verses. For example, the connotations of big and
centralized power, longevity, long survival, multiplicity, integrity, and so on can be
regarded as comprehensive symbols for the multiple number of thousand (1000)
and its higher orders in the Qur’an.

dc.language.iso

value: en

value: Qur’an

value: multiple numbers

value: thousand

value: symbol

value: religio-cultural arithmomancy


dc.contributor.author

value: Antonyan, Artur R.

dc.identifier.citation

value: Antonyan A. R. Anthropological positions of Pelagius and John Cassian. Issues of Theology, 2022, vol. 4, no. 3, pp. 398–407.

dc.description.abstract

value:
The article presents a comparative analysis of the anthropological constructions
Marseille abbot John Cassian and the British monk Pelagius. The study focuses on
the need for a thorough revision doctrinal assessments established in Western theological
science, according to which John Cassian is a representative of the so-called
“semi-Pelagian” theology. The author believes that the wrong view of the Cassian’s
theology formed as a result of considering his doctrines in the context of the Pelagian
dispute. Cassian’s theology is not related to the Pelagian discussion of free
will and predestination. His anthropology was formed in the context of the Eastern
Christian ascetic tradition. Eastern Christian theology paid great attention to questions
about the role of divine grace and human action in the matter of salvation.
Cassian, being the heir to the Eastern Christian monastic tradition, emphasized
personal asceticism. This led many theologians to draw the wrong conclusion that
the Marseille abbot was a follower of Pelagius. The article shows that the views of
Cassian are far from the theology of Pelagius and are closer to Augustine in many
respects.

dc.language.iso

value: ru

value: salvation

value: predestination

value: original sin

value: will

value: grace

value: pelagianism

value: synergism

dc.type

value: Article


dc.contributor.author

value: Magomedov, Khabib G.

dc.identifier.citation

value: Magomedov Kh. G. Features of Islamic inheritance law in the theological context. Issues of Theology, 2022, vol. 4, no. 3, pp. 460–468.

dc.description.abstract

value:
This article analyzes the features of the institute of Muslim inheritance law,
determining the importance of this branch in the Muslim legal system. The purpose
of this article, which introduces little-researched material, is to give a general
analysis of the uniqueness of Muslim inheritance law, taking into account all life
situations and nuances of inheritance in Islam. As a result of the study, the following
main characteristics of the inheritance law under study were identified: compliance
with human nature; impartiality in the distribution of the shares of heirs; guarantee
of the rights of the testator and heirs; granting the right to private property in
full; taking into account the financial burden when determining the shares of
inheritance; maintaining a balance in determining the shares of heirs between the
degree of kinship of the heir, his significance in relation to the deceased and the need for financial support. All these aspects expressed in the Institute of Islamic
inheritance law give it uniqueness, confirm its adaptability to all socio-economic
conditions of society in comparison with other systems, and prove that this is not a
fruit of human thought, but a divine law guaranteeing the rights of everyone in full,
without omissions and extremes, taking into account all aspects and life situations
that do not have mistakes and shortcomings, which is beyond the power of human
thought.

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.publisher

value: St Petersburg State University

dc.relation.ispartofseries

value: Issues of Theology;Volume 4; Issue 3

dc.subject

value: Islam

value: inheritance

value: Muslim law

value: heirs

value: Sharia


dc.contributor.author

value: Adzhimollaev, Abdulla R.

dc.identifier.citation

value: Adzhimollaev A. R. The school of Dagestan fatwa-making: History and modernity. Issues of Theology, 2022, vol. 4, no. 3, pp. 469–472.

dc.description.abstract

value:
In this article, the history of the appearance of the fatwa process is briefly explored,
as well as what conditions the fatwa giver must meet today. The search for answers
from ordinary citizens regarding any sphere of their life is what the Koran calls
for, and what companions of the Prophet, peace be upon him, were doing. When
studying this issue, one can find many scholars’ statements and opinions, and they
differ and change depending on the time in which the speaker lived. Therefore, at an
earlier stage, scholars said that the one who gives fatwas must meet the conditions of
the mujtahid, but after this period, those who knew and understood the basics set
out by the Mujtahid imams took up the fatwas. Today, when we live in a time when
there are no scientists of this level among us, the conditions that must be observed
and met by those who answer legal questions are also different from those that were
at an earlier stage of the development of Islamic science.

dc.language.iso

value: ru

dc.subject

value: fatwa

value: prophet

value: science

value: mujtahid

value: scientists


title: Editorial

dc.identifier.citation

value: Editorial. Issues of Theology, 2022, vol. 4, no. 3, pp. 340–341.

dc.description.abstract

value: Editorial

value: Article


dc.contributor.author

value: Lushnikov, Dimitri Yu. (priest)

dc.identifier.citation

value: Lushnikov D. Yu. Protopresbyter Evgeny Akvilonov: Proofs for the existence of God in the context of the synodal period rational theology. Issues of Theology, 2022, vol. 4, no. 3, pp. 514–538.

value:
This article considers protopresbyter Evgeny Akvilonov’s features of teaching fundamental
theology and his doctrine on the proofs for the existence of God in the
context of rational theology of the synodal period. It is demonstrated that: the main
methodological feature of his fundamental theological heritage is his desire to preempt
the solution of apologetic tasks by solving fundamental-founding ones, aimed
at bringing the Christian faith content to scientific understanding, or at the awareness
of the necessary internal connection and objective foundations of the Christian
faith doctrine; when substantiating the truth of Christianity, he relied on the
method of historical and comparative analysis of religions and considered bishop
Mikhail Gribanovsky’s “subjective method” unsatisfactory, returning to the traditional
neo-scholastic method. Prof. Akvilonov’s detailed presentation of ontological,
cosmological, and teleological proofs is analyzed, and the main methodological
feature of his teaching is revealed: the proofs are studied in close logical relationship
with the doctrine of divine attributes. Prof. Akvilonov’s use of an original methodology
for studying the proofs did not give much effect to the development of the
doctrine about them in contemporary fundamental theology. The concept of a unified
proof put forward by him did not receive a necessary detailed completion. Also,
no original formulation of ontological and cosmological proofs was proposed, and
a new form of the teleological proof is a probabilistic judgment; prof. Akvilonov’s
attempt to search for new ways of developing the doctrine of the proofs for the existence
of God is assessed positively.

dc.publisher

value: St Petersburg State University

dc.relation.ispartofseries

value: Issues of Theology;Volume 4; Issue 3

dc.subject

value: fundamental theology

value: apologetics

value: rational theology

value: protopresbyter Evgeny Akvilonov

value: proofs for the existence of God

value: ontological argument

value: cosmological argument

value: teleological argument


dc.contributor.author

value: Pikovskiy, Iriney (hieromonk)

dc.identifier.citation

value: Pikovskiy I. A. The concept of “Sheol” in the Hebrew Bible and in the old Greek translations. Issues of Theology, 2022, vol. 4, no. 3, pp. 492–513.

value:
The article outlines the key features of the translation of the word שְׁאוֹל , “Sheol”, from
the Hebrew Bible (Masoretic text) into the oldest Greek manuscripts. We take into
account revisions of Aquila, Symmachus, and Theodotion from the Origen’s Hexapla.
Scholars (e. g. K. Burnett, V. Olivero) often pay attention on the use of Greek
terminology in the literature of the Second Temple. Their studies are usually based
on methods of religious studies and philosophy. In contrast, we apply textual criticism.
Using the philological analysis of the Septuagint, we come to similar conclusion.
The concept of Sheol in the Hebrew and Greek Bibles is generally similar.
However, it contains an imprint of mythological images of two different cultures. In
the Jewish sacred text, Sheol is, first of all, a pit where a person finds his death, an
insatiable beast with a huge mouth. Hell of the Septuagint is not a terrible monster,
it is the “house of Hades”. In the depths of this Hades appears Tartarus, which is not
known in the Hebrew Bible. The idea of Tartarus probably was borrowed from Hellenistic
literature. The examples presented in the article demonstrate the translation
technique in the use of the Greek word ᾅδης “hell”, equivalent to the Hebrew שְׁאוֹל
“Sheol”. These examples show how the theological ideas from the Septuagint influenced
on the early Christian literature.

dc.language.iso

value: ru

dc.subject

value: Old Testament

value: Septuagint

value: Sheol

value: Hades

value: biblical translation

value: Textology of the Bible

value: theology of the Septuagint


dc.contributor.author

value: Sklyarov, Lev (hieromonk)

dc.identifier.citation

value: Sklyarov S. S. Countering extremist activities of religious associations: International experience of legal regulation. Issues of Theology, 2022, vol. 4, no. 3, pp. 549–560.

value:
Everyone can freely profess any religion, i. e. to be a member of a religious association
or to be an atheist. This is what practically all existing legal norms concerning
freedom of conscience and faith say. However, restrictions on the spread of new
religious movements, destructive cults and sects, individual religious rites and ceremonies,
and extremist worldviews are regularly introduced by legislatures in different
countries. Such legislative acts can be divided into two main categories in
accordance with the logic of law enforcement practice: prohibitive and restrictive.
Prohibitive laws provide for a direct ban on any actions, restrictive ones provide for
a number of conditions under which the norm is used as a means of partial prohibition.
Prohibitive and restrictive measures against religious extremists are considered
as the activity of the State to ensure the right to freedom of conscience and freedom
of religion. This article analyzes the international experience of legal regulation of
the activities of destructive religious associations — new religious movements, cults
and sects, in particular, countering their extremist activities, and also examines the
possibility of implementing the norms of international law in this area.

dc.publisher

value: St Petersburg State University

dc.relation.ispartofseries

value: Issues of Theology;Volume 4; Issue 3

dc.subject

value: implementation

value: international law

value: national law

value: countering extremism

value: religious associations

dc.type

value: Article


dc.contributor.author

value: Vashchenko, Andrey V. (priest)

dc.identifier.citation

value: Vashchenko A. V. Features of the ecclesiological discourse of St Porphyry Kavsokalivit. Issues of Theology, 2022, vol. 4, no. 3, pp. 539–548.

dc.description.abstract

value:
The paper analyzes the approach of St Porphyry Kavsokalivit to ecclesiological issues,
in particular his central statement, “The Church is eternal and uncreated”. An
attempt to determine the origins and logical justification of this concept is made.
The emergence of St Porphyry’s unusual theological formula relates to the literal
interpretation of the New Testament metaphor of the Church as the Body of Christ
(Eph 1:23, 1 Cor 12). A specific feature of St Porphyry’s ecclesiological discourse
is the affirmation of sameness of the Church and Christ, the Church and God, the
Church and the Holy Trinity. The relationship of his theological ideas with the ecclesiological
constructions of some Christian writers (St Epiphanius of Cyprus) is also
shown. Along with the original approach from a theological point of view, St Porphyry
Kavsokalivit is quite traditional when he talks about the Church in practical
terms, about its significance for salvation and the canonical structure of Christianity.
The St Porphyry’s idea of Church is more mystical than theological. His thought
is based not on rationalization, but on a subjective experience of the “churchness”.
Given the dogmatic uncertainty in ecclesiology in the Orthodox Church, the contradictory
and unusual concept of the eternal and uncreated Church of St Porphyry
can be qualified as a private theological opinion.

dc.language.iso

value: ru

dc.subject

value: Porphyry Kavsokalivit

value: Orthodox ecclesiology

value: uncreated Church

value: eternal Church

value: foundation of the Church

value: modern theology


dc.contributor.author

value: Kravchenko, Denis S.

value: Kustova, Elena V.

value: Melnik, Maksim Yu.

dc.identifier.citation

value: Kravchenko D. S., Kustova E. V., Melnik M.Yu. Modeling of state-to-state oxygen kinetics behind reflected shock waves. Vestnik of Saint Petersburg University. Mathematics. Mechanics. Astronomy, 2022, vol. 9 (67), issue 3, pp. 426–439. https://doi.org/10.21638/spbu01.2022.304 (In Russian)

dc.description.abstract

value:
A coupled problem of gasdynamics, vibrational relaxation, and dissociation in the flow
of oxygen behind reflected shock waves is studied. The detailed state-to-state kinetic approach
is used, which is based on a coupled solution of the momentum and energy conservation
equations with the balance equations for molecular vibrational state populations and
concentrations of oxygen atoms. Initial conditions corresponding to recent experiments in
shock tubes are considered. For different models of physicochemical processes, a comparison
is made with experimental data; varying the model parameters yields satisfactory agreement
of all gas-dynamic parameters with the measured ones. The key feature of the proposed
approach is the allowance for partial vibrational-chemical relaxation in the time interval
between the incident and reflected shock waves. When relaxation between the shocks is
not frozen, the reflected shock wave propagates through a vibrationally nonequilibrium
gas, which significantly affects kinetics and gas dynamics. Accounting for partial relaxation
ensures good agreement between the pressure calculated behind the front of the reflected
shock wave and the pressure measured in the experiment. On the other hand, comparison
with the vibrational temperature calculated indirectly from spectroscopic experimental data
under the assumption of frozen relaxation shows noticeable differences near the shock
wave front. We conclude that the technique for extracting gas-dynamic parameters from
spectroscopic data has to be improved by taking into account vibrational excitation before
the reflected shock wave.

dc.description.sponsorship

value: The work is supported by Saint Petersburg State University (project ID 84912260).

dc.publisher

value: St Petersburg State University

dc.relation.ispartofseries

value: Vestnik of St Petersburg University. Mathematics. Mechanics. Astronomy;Volume 67; Issue 3

dc.subject

value: vibrational relaxation

value: dissociation

value: state-to-state kinetics

value: oxygen

value: reflected shock wave


dc.contributor.author

value: Annin, Boris D.

value: Kolpakov, Aleksandr G.

value: Rakin, Sergey I.

dc.identifier.citation

value: Annin B.D., Kolpakov А.G., Rakin S. I. Boundary layers on the upper/lower surfaces of reinforced plates. Vestnik of Saint Petersburg University. Mathematics. Mechanics. Astronomy, 2022, vol. 9 (67), issue 3, pp. 391–404. https://doi.org/10.21638/spbu01.2022.301 (In Russian)

dc.description.abstract

value:
The periodicity cell problems of the homogenization theory, both elastic and thermoelastic,
are discussed for a fiber-reinforced plate. A feature of the periodicity cells of the plates is
the presence of free surfaces in them. As follows from our calculations, boundary layers
appear on free surfaces. The characteristics of these boundary layers for unidirectional and
transverse reinforced plates are investigated.

dc.description.sponsorship

value:
This work is supported in part by Ministry of Science and Higher Education of the Russian Federation
(project no. 075-15-2020-781).

dc.language.iso

value: ru

dc.relation.ispartofseries

value: Vestnik of St Petersburg University. Mathematics. Mechanics. Astronomy;Volume 9(67); Issue 3

dc.subject

value: plate

value: reinforcing fibers

value: matrix

value: homogenization method

dc.title

value: Article


dc.contributor.author

value: Babeshko, Vladimir A.

value: Evdokimova, Olga V.

value: Babeshko, Olga M.

dc.identifier.citation

value: Babeshko V.A., Evdokimova O.V., Babeshko O. M. On integral equations of cracks of a new type. Vestnik of Saint Petersburg University. Mathematics. Mechanics. Astronomy, 2022, vol. 9 (67), issue 3, pp. 405–416. https://doi.org/10.21638/spbu01.2022.302 (In Russian)

dc.description.abstract

value:
For the first time, the paper develops a new type of crack modeling method that allows
describing them in environments of complex rheologies. It is based on a new universal
modeling method previously published by the authors, used in boundary value problems
for systems of partial differential equations. The advantage of the method is the possibility
of avoiding the need to solve complex boundary value problems for systems of partial
differential equations by replacing them with separate differential equations, among which
the Helmholtz equations are the simplest. Namely, with the help of combinations of solutions
of boundary value problems for this equation, it is possible to describe the behavior of
complex solutions of multicomponent boundary value problems. In this paper, for the first
time, the method is applied to a mixed boundary value problem for cracks of a new type.
Cracks of a new type, complementing the Griffiths cracks, were discovered during the study
of fractures of lithospheric plates that converge at the ends during oncoming traffic along
the Conrad boundary. In the course of the study, Kirchhoff plates were adopted as models of
lithospheric plates. The method developed in the published article is aimed at the possibility
of describing models of approaching objects similar to lithospheric plates in the form of
deformable plates of more complex rheologies. In particular, it can be thermoelectroelastic
plates or other rheology. In the process of solving problems using Kirchhoff models for
lithospheric plates, there was a problem of calculating some functionals that needed to be
determined. This method demonstrates an approach that eliminates this drawback. The
derivation of integral equations of cracks of a new type, the method of their solution and
the approach to application in more complex rheologies is given.

dc.description.sponsorship

value:
Some fragments of the work were completed as part of the implementation of the Russian Ministry
of Education and Science state task for 2022 (project FZEN-2020-0020), Southern Scientific Center of the
Russian Academy of Sciences (project 00-20-13, state registration no. 122020100341-0), and supported
by the Russian Foundation for Basic Research (projects 19-41-230003, 19-41-230004, 19-48-230014).

dc.publisher

value: St Petersburg State University

dc.subject

value: block element

value: factorization

value: integral equations

value: external forms

value: cracks of a new type


dc.identifier.citation

value: On the anniversary of the Academician of the Russian Academy of Sciences Nikita Fedorovich Morozov. Vestnik of Saint Petersburg University. Mathematics. Mechanics. Astronomy, 2022, vol. 9 (67), issue 3, pp. 385–390. (In Russian)

dc.language.iso

value: ru

dc.relation.ispartofseries

value: Vestnik of St Petersburg University. Mathematics. Mechanics. Astronomy;Volume 9(67); Issue 3


dc.contributor.author

value: Bauer, Svetlana M.

value: Voronkova, Eva B.

value: Semenov, Boris N.

dc.identifier.citation

value: Bauer S.M., Voronkova E.B., Semenov B.N. On non-axisymmetrical buckling modes of circular plates under normal pressure. Vestnik of Saint Petersburg University. Mathematics. Mechanics. Astronomy, 2022, vol. 9 (67), issue 3, pp. 417–425. https://doi.org/10.21638/spbu01.2022.303 (In Russian)

dc.description.abstract

value:
The paper presents the results of a study of the bifurcation of axisymmetric equilibrium
forms of round plates under various conditions for fixing the outer edge. It is shown that
for the case of sliding edge, the analytical, asymptotic and finite element approaches give
close results. When the edge of the plate is hinged, the buckling to a non-axisymmetric
state occurs at a much higher load and with the formation of a smaller number of waves
than for a sliding boundary conditions. Difficulties in obtaining a numerical solution based
on the analytical approach are apparently associated with the need for a more accurate
description of the stress-strain subcritical state of the plate.

dc.description.sponsorship

value:
This work was carried out using the equipment of the Resource Center of the Saint Petersburg
State University Research Park “Environmental Safety Observatory”.

dc.subject

value: circular plate

value: buckling

value: finite element modelling


title: Sessions of Section of the House of scientists of the Russian Academy of Sciences on the theoretical mechanics of prof. N. N. Poljakhov February 16, 2022

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. February 16, 2022. Vestnik of Saint Petersburg University. Mathematics. Mechanics. Astronomy, 2022, vol. 9 (67), issue 3, p. 439.

dc.publisher

value: St Petersburg State University

value: Vestnik of St Petersburg University. Mathematics. Mechanics. Astronomy;Volume 9 (67); Issue 3

dc.type

value: Article


dc.contributor.author

value: Gishlarkaev, Vakha I.

dc.identifier.citation

value: Gishlarkaev V. I. Fourier transform method for partial differential equations: Formulas for representing solutions to the Cauchy problem. Vestnik of Saint Petersburg University. Mathematics. Mechanics. Astronomy, 2022, vol. 9 (67), issue 3, pp. 480–494. https://doi.org/10.21638/spbu01.2022.309 (In Russian)

dc.description.abstract

value:
The paper proposes a method for solving the Cauchy problem for linear partial differential
equations with variable coefficients of a special form, allowing, after applying the (inverse)
Fourier transform, to rewrite the original problem as a Cauchy problem for first-order partial
differential equations. The resulting problem is solved by the method of characteristics
and the (direct) Fourier transform is applied to its solution. And for this it is necessary to
know the solution of the Cauchy problem for a first-order equation in the entire domain of
definition. This leads to the requirement that the support of the (inverse) Fourier transform
of the initial function of the original problem be compact, and to describe the class of
initial functions, it is necessary to use Paley—Wiener—Schwarz-type theorems on Fourierimages,
including distributions. The presentation of solutions in the form of the Fourier
transform of some function (distribution), determined by the initial function, is presented.
A general form of the evolutionary equation is written down, which, when the described
method is applied, leads to the consideration of a homogeneous first-order equation, and a
formula for the solution of the Cauchy problem in this general case is derived. The general
form of the equation is written down, which leads to the consideration of a first-order inhomogeneous
equation, and a formula for solutions it is derived. Particular cases of these
equations are the well-known equations that are encountered in the description of various
processes in physics, chemistry, and biology.

dc.subject

value: Fourier transform

value: distributions with compact support

value: method of characteristics


dc.contributor.author

value: Gdoutos, Emmanuel

value: Konsta-Gdoutos, Maria

dc.identifier.citation

value: Gdoutos E., Konsta-Gdoutos M. Fracture mechanics characterization of mortar nanocomposites reinforced with carbon nanotubes. Vestnik of Saint Petersburg University. Mathematics. Mechanics. Astronomy, 2022, vol. 9 (67), issue 3, pp. 452–463. https://doi.org/10.21638/spbu01.2022.306

dc.description.abstract

value:
The objective of this paper is to provide a fracture mechanics characterization of mortar
nanocomposites reinforced with multiwall carbon nanotubes (MWCNTs). The critical
stress intensity factor, KIc, the strain energy release rate, GIc, the effective crack length,
ac, and the crack tip opening displacement, CTODc are determined using three-point bend
specimens. It was established that reinforcement of mortar with MWCNTs provides excellent
improvement in the above fracture mechanics quantities.

dc.language.iso

value: en

dc.subject

value: fracture mechanics

value: multi-wall carbon nanotubes

value: stress intensity factor

value: energy release rate

value: crack tip opening displacement

value: mortar nanocomposites

value: cementitious materials


dc.contributor.author

value: Kuleshov, Alexander S.

value: Gadzhiev, Maxim M.

dc.identifier.citation

value: Kuleshov A. S., Gadzhiev M.M. The problem of motion of a rigid body with a fixed point in a flow of particles. Vestnik of Saint Petersburg University. Mathematics. Mechanics. Astronomy, 2022, vol. 9 (67), issue 3, pp. 550–560. https://doi.org/10.21638/spbu01.2022.315 (In Russian)

dc.description.abstract

value:
The problem of motion of a rigid body with a fixed point in a free molecular flow of particles
is considered. It is shown that the equations of motion of the body generalize the classical
Euler—Poisson equations of motion of a heavy rigid body with a fixed point and they are
represented in the form of the classical Euler—Poisson equations in the case, when the
surface of the body in a flow of particles is a sphere. Problems of the existence of first
integrals in the considered system are discussed.

dc.description.sponsorship

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

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 3

dc.subject

value: body with a fixed point

value: free molecular flow

value: first integrals

dc.title

value: Article


dc.contributor.author

value: Aßmus, Marcus

value: Altenbach, Holm

dc.identifier.citation

value: Aßmus M., Altenbach H. On analytical estimates of the effective elastic properties of polycrystalline silicon. Vestnik of Saint Petersburg University. Mathematics. Mechanics. Astronomy, 2022, vol. 9 (67), issue 3, pp. 440–451. https://doi.org/10.21638/spbu01.2022.305

dc.description.abstract

value:
Several analytical approaches can be utilized to estimate the elastic properties of polycrystalline
silicon. In experimental studies, the notion of an macroscopically isotropic aggregate
is introduced while the single crystals obey cubic symmetry. We here give a synopsis on
analytical approaches to predict elastic properties and apply them to estimate effective
parameters of polycrystalline silicon. Here, the predictions are based on the parameters
associated with shear solely. The results are juxtaposed in terms of the approaches applied,
while different measures are introduced for evaluation. In comparison with experimental
findings, the geometric mean implies a reasonable estimation for the elastic properties of
polycrystalline silicon.

dc.description.sponsorship

value:
This work was partially funded by the German Research Foundation (DFG) within the Research
Training Group RTG 1554/II Micro-Macro-Interactions of Structured Media and Particle Systems (grant
no. 83477795).

dc.language.iso

value: en

dc.relation.ispartofseries

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

dc.subject

value: silicon

value: cubic single crystals

value: polycrystalline aggregate

value: averaging methods

value: elasticity


title: Ultrapowers of Banach algebras

dc.contributor.author

value: Ebadian, Ali

value: Jabbari, Ali

dc.identifier.citation

value: Ebadian A., Jabbari A. Ultrapowers of Banach algebras. Vestnik of Saint Petersburg University. Mathematics. Mechanics. Astronomy, 2022, vol. 9 (67), issue 3, pp. 527–541. https://doi.org/10.21638/spbu01.2022.313 (In Russian)

dc.description.abstract

value:
In this paper, we consider ultrapowers of Banach algebras as Banach algebras and the
product  (J,U) on the second dual of Banach algebras. For a Banach algebra A, we show
that if there is a continuous derivation from A into itself, then there is a continuous derivation
from (A
∗∗
, (J,U)) into it. Moreover, we show that if there is a continuous derivation
from A into X∗∗, where X is a Banach A-bimodule, then there is a continuous derivation
from A into ultrapower of X i. e., (X)U. Ultra (character) amenability of Banach algebras
is investigated and it will be shown that if every continuous derivation from A into (X)U
is inner, then A is ultra amenable. Some results related to left (resp. right) multipliers on
(A
∗∗
, (J,U)) are also given.

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 3

value: amenability

value: arens products

value: derivation

value: multiplier

value: ultrapower

value: ultra amenable

value: ultra character amenability

dc.title

value: Ultrapowers of Banach algebras


dc.contributor.author

value: Harlamov, Boris P.

value: Rasova, Sofia S.

dc.identifier.citation

value: Harlamov B. P., Rasova S. S. Time distribution from zero up to beginning of the final stop of semi-Markov diffusion process on interval with unattainable boundaries. Vestnik of Saint Petersburg University. Mathematics. Mechanics. Astronomy, 2022, vol. 9 (67), issue 3, pp. 517–526. https://doi.org/10.21638/spbu01.2022.312 (In Russian)

dc.description.abstract

value:
A one-dimensional process with continuous trajectories on non-negative semi-axis is considered.
The process has the Markov property with respect to the first exit time from any
open interval (semi-Markov process). This process is called to be diffusion if probability for its first exit point from any symmetric neighborhood of its initial point across any boundary
tends to 1/2 as length of this neighborhood tends to zero. Time distribution from zero up
to beginning of the final interval of constancy is investigated. This distribution depends
on semi-Markov transition generating functions of the process. Representation for Laplace
transform of this distribution is obtained in an integral form. The integrand of this representation
explains sense of quadratic members of Tailor decomposition of a semi-Markov
transition generating function by powers of diameter of symmetric neighborhood of the process
initial point. Namely trajectory of the process has no any final interval of constancy if
and only if coefficient of such a quadratic member is equal to zero.

dc.subject

value: continuous semi-Markov process

value: semi-Markov chain

value: final interval of constancy

value: differential equation

value: Laplace transformation

value: unattainable boundary

value: integral representation

dc.type

value: Article