dc.contributor.author

value: Petrova, Nataliia G.

dc.identifier.citation

value: Petrova N. G. About unsolved problems of quality management in health care. Vestnik of Saint Petersburg University. Medicine, 2018, vol. 13, issue 1, pp. 83–90.

dc.description.abstract

value: Ensuring a high level of quality of care is the main task of any medical organization. The first stage of its solution is proper quality control. In the article, problems that make it difficult to solve these problems are considered. They are: the imperfection of the legislative base, the lack of a clear understanding of the quality criteria by the leaders of medical organizations and subjects of control, different approaches to its evaluation and interpretation of indicators, the lack of differentiation of tasks for achieving certain indicators by management levels, the recommendatory nature of orders and standards for the need for their compliance, the lack of systematic approach to the organization of control and quality assurance, the lack of special training for managers in the field of quality management. Only a systematic approach to solving these problems will lead to a significant improvement in the quality of medical care.

dc.relation.ispartofseries

value: Vestnik of St Petersburg University. Medicine;Volume 13; Issue 1

value: quality of medical care

value: quality management

dc.type

value: Article


dc.contributor.author

value: Bogomiagkova, Elena S.

dc.identifier.citation

value: Bogomiagkova E. S. A turn to biology: The future development of sociological knowledge. Vestnik of Saint Petersburg University. Sociology, 2018, vol. 11, issue 1, pp. 35–50.

dc.description.abstract

value:
The article is devoted to consideration of the issues of a “turn to biology” in modern social
sciences. It is discussed how reasonable is the use of this term, and which new issues and
phenomena have appeared in the field of social sciences because of this shift. Progress in biomedical
knowledge and in medical technology and biotechnology has a significant impact on
the sociological agenda, transforming not only beliefs about the bases of health, disease and
functioning of the institute of medicine, but interpretation of social actions, practices, social
structures and group cohesion. The article briefly describes both the process of penetration of
biomedical terms and concepts in the discourse of the social sciences and the transformation
of traditional ideas about the dichotomy of nature/culture. It is proposed to use the concept
of biosociality by P. Rabinow as a promising concept for understanding of these phenomena.
Two main research areas where the issues of the “turn to biology” are in the focus of attention
were highlighted. First, we are interested in medicalization and in the associated processes of
biomedicalization and genetization of society. Second, sociological interest in the body and its
scientific interpretation are considered. Progress in biology, changing understanding of health
and disease, has an impact not only on the individual and collective social practices of caring
for the body (for example, “patients-in-waiting”), but also contributes to the formation of
new kinds of social cohesion and structures of social inequality. The process of medicalization
continues in biomedicalization and genetization of society, which are based on the view on the
human body as a project or material, ready for modification. Resulting from the interaction
between medical knowledge and political and economic institutions, biological and genetic
realities permeate everyday life and become an object of interest for the social sciences. Special
attention should be paid to the analysis of the shift in values of the modern society, according
to which “biological/genetic” becomes a significant explanatory category in mundane and
scientific discourses.

dc.language.iso

value: ru

dc.publisher

value: St Petersburg State University

dc.relation.ispartofseries

value: Vestnik of St Petersburg University. Sociology;Volume 11; Issue 1

dc.subject

value: the turn to biology

value: sociology of medicine and health

value: medical anthropology

value: sociology of body

value: medicalization

value: biomedicalization

value: genetization

dc.title

format: Adobe PDF


dc.contributor.author

value: Gorbunova, Nadejda I.

value: Tibekina, Lyudmila M.

dc.identifier.citation

value: Gorbunova N. I., Tibekina L. M. Cryotherapy in treatment of patients with degenerative-dystrophic diseases of the spine. Vestnik of Saint Petersburg University. Medicine, 2018, vol. 13, issue 1, pp. 58–71.

dc.description.abstract

value: The review have a brief historical information of the use of cryotherapy in the treatment of various diseases, in particular, degenerative-dystrophic diseases of the spine with pain and muscular spastic syndrome. The variants of general and local cryotherapy, temperature regimes and modern equipment used for these purposes in the review also are considered. At intensifying of the medical effect of cryotherapy use ultrasound, microwave therapy, impulse currents of low frequency et al. The analgetic effect of cryotherapy have the connection to “blocking” of pain receptors of a skin, normalization of antidromic excitability of neurones of a spinal brain and a functional state of the autonomic nervous system, change of a humoral and hormonal team with participation of neuropeptides system and endogenic opioids, a rupture of a vicious circle “pain — a muscular spastic stricture — pain”. The development of neuropathic pain is followed by the strengthened production of autoantibodies to neurotransmitters of excitations and of brakes, and the increased induction of autoantibodies to neurotransmitters of the antinociceptive system promotes chronization of pain. The studying of specificity of cold influences at different methods of a hypothermia and of pathophysiological mechanisms of adaptation possibilitys of the patients under influence of ultralow temperatures is represent the perspective direction of medical science and of practice.

dc.relation.ispartofseries

value: Vestnik of St Petersburg University. Medicine;Volume 13; Issue 1

dc.subject

value: cryotherapy

value: degenerative-dystrophic disease of the spine

value: pain syndrome

value: cytokines


dc.contributor.author

value: Borkina, Anastasia Yu.

dc.identifier.citation

value: Borkina A. Yu. Mechanisms of the plot’s construction in the first book of Japanese literary work “Tōkaidōchū hizakurige” (1802–1809). Vestnik SPbSU. Asian and African Studies, 2018, vol. 10, issue 1, pp. 49–56.

dc.description.abstract

value:
The article presents the main characteristics of plot construction in the first part of “Tōkaidōchū
hizakurige” by Jippensha Ikku, one of the most prominent works of the kokkeibon (“funny
books”) genre. The following tendencies, continued to be used in the sequels, are highlighted
in the article: the exploitation of techniques and plots of the travel literature of earlier epochs;
the usage of three essential methods (ugachi, wordplay, situational comedy) in order to create
comic scenes; the independence of episodes and the open final as the basis of the composition.
The points listed above are illustrated with the fragments from “Tōkaidōchū hizakurige”,
translated by the article’s author.

dc.language.iso

value: ru

dc.publisher

value: St Petersburg State University

dc.relation.ispartofseries

value: Vestnik of St Petersburg University. Asian and African Studies;Volume 10; Issue 1

value: Jippensha Ikku

value: kokkeibon

value: gesaku

value: humorous fiction

dc.type

value: Article


title: V. Elmeev in the memory of followers

dc.description.abstract

value: V. Elmeev in the memory of followers

dc.relation.ispartofseries

value: Vestnik of St Petersburg University. Sociology;Volume 11; Issue 1

filename: 01-Elmeev(In memory).pdf


dc.contributor.author

value: Ovsyannikov, Vasiliy G.

dc.identifier.citation

value: Ovsyannikov V. G. V. Elmeev — founder of the concept of applied sociology at St. Petersburg State University. Vestnik of Saint Petersburg University. Sociology, 2018, vol. 11, issue 1, pp. 12–19.

dc.description.abstract

value:
This article relates V. Ya. Yelmeev’s original and innovative argumentation and development of
applied sociology as a specific function of Sociology. It is connected with application of sociological
laws and principles to particular social problems in order to solve them. Such understanding
of applied sociology is not generally accepted by Russian Sociology which identifies
it with empirical studies that don’t necessarily change social objects. Yelmeev’s idea based on
materialistic analysis justifies transition from “knowledge-description” to “knowledge-prescription”,
from practice to theory and from theory to practice. It defines methodological borders
of methods and models of solving the complicated crisis associated with social situations
in contemporary Russian society. The staff of the department of applied and sectoral sociology
which was created by Yelmeev continues its work, concentrating on development of conceptions
and methods of sociology of practice, on training specialists in social innovations, social
engineering and social technologies.

dc.subject

value: applied sociology

value: methodology

value: materialistic analysis

value: method

value: complex approach

value: social engineering

value: practice


dc.contributor.author

value: Lyakhovich, Anastasia V.

dc.identifier.citation

value: Lyakhovich A. V. “The Water of Cure” by Alhaji Abubakar Imam as an example of Hausa early fiction. Vestnik SPbSU. Asian and African Studies, 2018, vol. 10, issue 1, pp. 104–117.

dc.description.abstract

value:
The 1930-s are known as a turning point in the history of Hausa literature of Northern Nigeria.
It was a time during which a new form of creative writing, prose fiction, emerged. The present
article analyzes one of the first creative works of Hausa literature — “The Water of Cure” by Alhaji
Abubakar Imam. Particular focus is given to the genre and compositional characteristics
of the work under discussion; main features of key characters are also examined. In conclusion,
the genre specificity of the work is established.

dc.language.iso

value: en

dc.publisher

value: St Petersburg State University

value: Vestnik of St Petersburg University. Asian and African Studies;Volume 10; Issue 1

dc.subject

value: fiction

value: Northern Nigeria

value: Water of cure

value: Alhaji Abubakar Imam


dc.contributor.author

value: Mylnikova, Yulia S.

dc.identifier.citation

value: Mylnikova Yu. S. Russian classical literature on Chinese stage: Problems of adaptation and perception. Vestnik SPbSU. Asian and African Studies, 2018, vol. 10, issue 1, pp. 4–13.

dc.description.abstract

value:
Most of the state-owned theatres in the PRC implement the Stanislavsky’s system. The Stanislavsky’s
system has flourished in China since the 1950s. It comes as no surprise because at this
time in the USSR Stanislavsky was praised to be “the top of socialist realism”. At the beginning of
the 1960s, five among eight volumes of the complete works of Stanislavsky were translated into
Chinese, and in all theoretical publications in China he was called “the creator of realistic theatre”.
A closer view to the contemporary huaju (“spoken drama”) reveals that the Stanislavsky’s
method was perceived in China only partly. This paper will try to give a brief overview of several
fundamental problems of perception and interpretations that contemporary Chinese theatre
confronts, focusing on the production of Russian plays. The first problem is the lack of tradition
or habit to examine, to investigate the “material” (epoch described in the particular play, way of
life, attitude to religion, cultural characteristics etc.). As a result, the second problem is the challenge
of translation. The third problem is the dominance of “international stereotypes”: the Chinese
know how to play the Russians, know how to play the Americans; other nationalities more
or less fit these two performing models. The forth problem is the absence of full-blooded theatrical
critique. And the fifth problem is the necessity to workout common professional criteria.

dc.description.sponsorship

value:
The paper was prepared with financial support of the Russian Foundation for Basic Research. Project
№ 17-21-49001а(м) («Chinese perceptions of Russia and the West during the 20th century: changes,
continuities and contingencies»).

dc.subject

value: Chinese contemporary theatre

value: Russian plays in China

value: the Stanislavsky’s system

value: perception and interpretation

dc.type

value: Article


dc.contributor.author

value: Vorobyov, Konstantin P.

value: Mitrohin, Kirill V.

dc.identifier.citation

value: Vorobyov K. P., Mitrohin K. V. Changes in vegetative regulation at stages of pre-operative preparation and after tracheal intubation in patients with a general surgery profile. Vestnik of Saint Petersburg University. Medicine, 2018, vol. 13, issue 1, pp. 5–15.

dc.description.abstract

value: A pilot study that traced the parameters of heart rate variability was performed in the initial preoperative examination of an anaesthesiologist, on the eve of surgery, after premedication, induction and intubation of the trachea in general surgical patients. The most stable early characteristic of preoperative stress is tachycardia (p = 0.0008). A typical response of the body to preoperative stress is also a decrease in the standard deviation of the sample of cardio interval durations (p = 0.003), and suppression of the total spectral power, mostly high-frequency components (p = 0.028). New scientific facts about the diagnostic significance of the rate of autocorrelation of the heart rhythm (p = 0.003) in assessing the autonomic response of the body to intubation of the trachea are obtained. The results of this preliminary study revealed regular reactions of the autonomic nervous system to preoperative stress in the form of activation of sympathetic tone, increased synchronization of regulatory processes, regular changes in the dynamics of peak powers of the heart rate spectrum.

dc.language.iso

value: ru

dc.relation.ispartofseries

value: Vestnik of St Petersburg University. Medicine;Volume 13; Issue 1

dc.subject

value: preoperative stress

value: vegetative regulation

value: heart rate variability

value: intubation of the trachea


dc.contributor.author

value: Volkov, Eduard V.

value: Sokolova, Ol’ga I.

value: Komarova, Aleksandra Ya.

value: Karavaeva, Aleksandra A.

value: Yakovlev, Aleksei A.

dc.identifier.citation

value: Volkov E. V., Sokolova O. I., Komarova A. Ya., Karavaeva A. A., Yakovlev A. A. Prospects for the treatment of patients with chronic viral hepatitis with cirrhosis. Vestnik of Saint Petersburg University. Medicine, 2018, vol. 13, issue 1, pp. 16–23.

dc.description.abstract

value: We performed a retrospective cohort study at S. P. Botkin Clinical Infectious Diseases Hospital, St. Petersburg, Russia from January to December 2014. The purpose of this study was to evaluate indications and contraindications for liver transplant in cirrhotic patients with chronic hepatitis. We analyzed 310 medical record of patients with established diagnosis “Chronic viral hepatitis, cirrhosis”. According to the EASL 2015, 59.4 % (184) of patients with liver cirrhosis had one or multiple indications for liver transplantation. 64.1 % (118) patients were of working age. Chronic hepatitis C virus infection was detected in 56.3 % (71). The most significant contraindication was active alcohol or drug addiction: 76 % (44). Extrahepatic malignant neoplasms detected in 19 % (11) and active extrahepatic infection in 5 % (3). Risk factors of mortality during the current hospitalization were significantly associated with the MELD score, the presence of hepatocellular carcinoma, active alcoholism, active extrahepatic infection and extrahepatic malignant neoplasms. Among patients hospitalized with the diagnosis “Chronic viral hepatitis, cirrhosis”, 40 % (126) had indications and had no contraindications for liver transplantation. Under the conditions of an insufficient number of liver transplantations, high mortality, especially in working-age patients with no contraindications for this operation, it is necessary to find early treatment with effective influence on the pathological mechanisms to prevent the need for liver transplantation.

dc.publisher

value: St Petersburg State University

dc.subject

value: liver cirrhosis

value: decompensated cirrhosis

value: liver transplantation

value: chronic hepatitis C virus infection

value: MELD score


dc.contributor.author

value: van Zwieten, Koos Jaap

value: Thywissen, Carlo

value: Hotterbeekx, An

value: Kosten, Lauren

value: de Munter, Stephanie

value: de Bakker, Bernadette

value: Adriaensens, Peter

value: Varzin, Sergey A.

value: Piskun, Oleg E.

value: Schmidt, Klaus P.

dc.identifier.citation

value: van Zwieten K. J., Thywissen C., Hotterbeekx A., Kosten L., de Munter S., de Bakker B. S., Adriaensens P., Varzin S. A., Piskun O. E., Schmidt K. P. The lateral extensor slips (lateral bundles) of the human finger in interphalangeal flexion. Vestnik of Saint Petersburg University. Medicine, 2018, vol. 13, issue 1, pp. 46–57.

dc.description.abstract

value:
In the present paper on functional anatomy of the human finger, we discuss the normal palmar
gliding of the lateral slips (or lateral bundles) of the extensor tendon along the flexing
proximal interphalangeal (PIP) joint. Finely tuned by the tendinous spiral fibers, this palmar
gliding enables simultaneous flexion of the distal interphalangeal (DIP) joint. This is essential
for undisturbed kinematic coupling of finger motion. In-vitro observations during manipulation
of anatomical specimens of the finger reveal this phenomenon. In-vivo observations,
however, have hitherto been absent. By means of high-resolution ultrasonography, we thus
obtained in-vivo transversal sections of the PIP joint in extension as well as in flexion showing
the palmar gliding of the lateral bundles. The images were used to compare with equivalent
in-vitro transversal sections, and with current models from literature. We observed a satisfying
congruence between our transverse images acquired by high-resolution MRI and by highresolution
ultrasonography. Proximal interphalangeal flexion alone shows that the lateral
bundles assume only slightly more palmar positions than in extension. In subsequent distal
interphalangeal flexion however, the lateral bundles assume almost sagittal positions, and as a
consequence, also more palmar positions along the proximal interphalangeal joint. The resulting
data may contribute to finger extensor tendon repair by reconstructive surgery techniques.

dc.language.iso

value: en

dc.relation.ispartofseries

value: Vestnik of St Petersburg University. Medicine;Volume 13; Issue 1

dc.subject

value: lateral extensors (lateral bundles) of a human finger

value: movements

value: an extension in an interfalangeal joint

value: PIP

value: DIP

value: the functional anatomy of a finger

value: a finger

value: a hand

value: an interfalangeal joint

value: the top extremity

value: sliding of side bunches

value: high-res MRT

value: a high-res ultrasonografy

dc.title

value: Article

filename: 05-van Zwieten.pdf


title: Looking for new voices abroad. Review of Lu Xun forum in Germany

dc.contributor.author

value: Ge, Tao

dc.language.iso

value: ru

dc.publisher

value: St Petersburg State University

dc.relation.ispartofseries

value: Vestnik of St Petersburg University. Asian and African Studies;Volume 10; Issue 1

filename: 11-Ge Tao.pdf


title: Editorial

dc.description.abstract

value: Editorial

value: Vestnik of St Petersburg University. Sociology;Volume 11; Issue 1


dc.contributor.author

value: Zakrevskii, Viktor V.

value: Liflyandsky, Vladislav G.

dc.identifier.citation

value: Zakrevskii V. V., Liflyandsky V. G. Vegetables and fruits in the prevention and treatment of cancer in the light of evidence-based medicine (part 2). Vestnik of Saint Petersburg University. Medicine, 2018, vol. 13, issue 1, pp. 91–105.

value: A survey of existing literature has analyzed the effect of vegetables and fruits on the risk of developing cancer of the prostate, lungs, pancreas, oral cavity, pharynx and larynx, esophagus and stomach, liver and gallbladder, kidneys and urinary bladder and justifies the possibility of their use for the prevention of these diseases and to improve the quality of life of patients with cancer. It has been established that in order to reduce the risk of cancer, it is not so much the use of certain groups of fruits and vegetables that have the most pronounced preventive effect on certain types of cancer, but rather the overall anti-cancer focus of the entire diet, as well as their sufficient intake. Recommended levels of consumption of vegetables vary according to different authors from 240 to 402 grams per day, fruits — from 160 to 460 grams per day, dietary fiber — from 25 grams per day. The drawback of existing norms of consumption is the lack of norms for certain groups of fruits, berries and vegetables. Given the various causes and different mechanisms of the development of individual forms and localizations of malignant tumors, a maximally differentiated approach is needed in the evaluation of both individual products, individual cancer localizations and their varieties within each localization, including the histological type of tumors and also genetic differences. In addition, it is important to conduct research with qualitative design on large contingents, with the exception of systematic and accidental errors, and also taking into account, in the first place, clinically relevant outcomes (mortality and life expectancy of healthy persons, quality of life, metastasis rate, angiogenesis and tumor proliferation in patients etc.), and not only favorable dynamics of laboratory indicators.

dc.relation.ispartofseries

value: Vestnik of St Petersburg University. Medicine;Volume 13; Issue 1

dc.subject

value: vegetables

value: fruits

value: berries

value: prevention and treatment of cancer

value: evidence-based medicine


dc.contributor.author

value: Nabat, Maria M.

dc.identifier.citation

value: Nabat M. M. The USSR’s economic assistance strategy to Afghanistan on the threshold of the Soviet Troops’ withdrawal. Vestnik SPbSU. Asian and African Studies, 2018, vol. 10, issue 1, pp. 118–132.

value:
The article examines the USSR’s economic assistance strategy to Afghanistan on the threshold
of the Soviet Troops’ withdrawal on the basis of recently declassified data from the Russian
State Archive of Social and Political History. The main aspects of the Soviet economic assistance
strategy are analyzed in detail, including cooperation with the Afghan private sector,
a program of “direct links” between the Soviet Republics and the provinces of Afghanistan,
as well as a multiple increase in the volume of gratis aid. The author concludes that with the
emergence of a new military and political situation in Afghanistan on the eve of the Soviet
Troops’ withdrawal, the USSR developed a special strategy of economic assistance to Afghanistan
aimed at increasing support for the People’s Democratic Party of Afghanistan (PDPA)
and President Najibullah among the population of this country.

dc.subject

value: Afghanistan

value: economic assistance

value: Soviet economic and technical assistance

value: gratis aid

dc.type

value: Article


dc.contributor.author

value: Mikhel, Dmitry V.

dc.identifier.citation

value: Mikhel D. V. Bipolar disorder: An epidemic or a consequence of the medicalization of society? Vestnik of Saint Petersburg University. Sociology, 2018, vol. 11, issue 1, pp. 51–65.

dc.description.abstract

value:
Social sciences today are very sensitive to public health problems, a fact which leads to the
emergence of new research areas and discussions about new varieties of social problems. In
this article, the author engages with the phenomenon of bipolar disorder, which the modern
medical community estimates as another epidemic that requires special attention and resources.
The rapid spread of this epidemic allows social scientists to question the nature and social
factors that contribute to the rapid growth in the number of bipolar patients. Ideas about the
reality of the epidemic are combined with the notion that it may be socially constructed by
changes in the language of medical knowledge, as well as new strategies in medical practice and total pharmacologization of medical aid. The emergence of this epidemic also reflects the
continuing medicalization of society. Agents of medicalization are not only doctors, but pharmaceutical
corporations, the PR companies they cooperate with, and the patients themselves,
seeking solutions to their personal problems with the help of psychotropic drugs. We can also
consider patient experience and patient policy by which people adopt the illness and try to
give a public meaning to the experience. Bipolar disorder can also be considered as a product
of the culture of developed industrial society, which gives rise to the demand for an invariably
energetic creative worker, because in connection with the computerization and robotization
of monotonous manual labor, the mass need for a disciplined worker and office employee has
almost disappeared.

dc.description.sponsorship

value: Публикация подготовлена в рамках поддержанного РГНФ научного проекта «Индивидуальный опыт болезни и страдания в контексте социокультурных трансформаций: философские проблемы медико-антропологических исследований» (№ 15-03-00348).

dc.language.iso

value: ru

dc.publisher

value: St Petersburg State University

dc.relation.ispartofseries

value: Vestnik of St Petersburg University. Sociology;Volume 11; Issue 1

dc.subject

value: mental health of society

value: psycho-emotional life

value: bipolar disorder

value: epidemic

value: medical theory

value: pharmacology

value: medicalization

value: patient experience

value: culture of developed industrial society


dc.contributor.author

value: Risukhina, Olga N.

dc.identifier.citation

value: Risukhina O. N. Reforming and development of cultural organizations of North-Eastern China (1978–2008). Vestnik SPbSU. Asian and African Studies, 2018, vol. 10, issue 1, pp. 32–48.

dc.description.abstract

value:
The reform policy that is being implemented in the PRC affects all spheres of activity, including
culture and its institutions. In the article the author analyzes the process of reforming
cultural institutions and notes the positive results of the reforms, as well as their negative sides.
To address these problems, the activities of cultural institutions (theaters, cinemas, museums,
libraries, artistic performing groups, etc.) under the conditions of reforms are considered. As
a result of reforming cultural institutions, both qualitative and quantitative changes occurred.
The transition from the state monopoly to the diversity of forms of ownership gave new opportunities
for development. In the planning of long-term goals for the development of the
sphere of culture and in the sphere of investment in culture, the leading role of the state has
remained. There was a significant increase in the number of libraries and museums.

dc.relation.ispartofseries

value: Vestnik of St Petersburg University. Asian and African Studies;Volume 10; Issue 1

dc.subject

value: Northeast China

value: cultural institutions

value: reform

value: Heilongjiang

value: Jilin

value: Liaoning

value: Changchun

value: Shenyang

dc.title

value: Article


dc.contributor.author

value: Finkelshtein, Irine E.

dc.identifier.citation

value: Finkelshtein I. E. Model of decision-making in medical anthropology L. Garro. Vestnik of Saint Petersburg University. Sociology, 2018, vol. 11, issue 1, pp. 79–93.

dc.description.abstract

value:
In recent years, within Russian medical anthropology and sociology there has been an increasing
interest in the research direction “Medical Choice”. In this regard, the methodology of
studying the treatment decision-making process suggested by the American anthropologist
L. Garro is of particular value. This approach is based on theoretical provisions of cognitive
anthropology. Using a broad empirical base, L. Garro develops a model for making patient
decisions in the acute disease case by residents of a small Mexican village. It defines standards
of treatment choice, which are typical for the studied community. The article describes the
elements of the model, including selection criteria, their combinations, which establish the
direction of choice, and alternative solutions. The value of L. Garro’s approach is determined
by the unique combination of the theoretical harmony of the model and its proximity to real
everyday life, as well as the ability to adapt it to the study of the patient’s medical choice in
another socio-cultural context.

dc.description.sponsorship

value: Статья подготовлена при поддержке гранта РФФИ № 17-06-00127 А.

dc.language.iso

value: ru

dc.publisher

value: St Petersburg State University

dc.relation.ispartofseries

value: Vestnik of St Petersburg University. Sociology;Volume 11; Issue 1

dc.subject

value: cognitive anthropology

value: decision-making model

value: medical choice

value: the structure of illness beliefs


dc.contributor.author

value: Makeeva, Nadezhda V.

dc.identifier.citation

value: Makeeva N. V. Adjectives and qualitative verbs in Akebu. Vestnik SPbSU. Asian and African Studies, 2018, vol. 10, issue 1, pp. 14–31.

dc.description.abstract

value:
Akebu (< Kebu-Animere < Left Bank < Kwa < Niger-Congo) has a closed class of adjectives
which consists of about 30 lexemes, most of which are lexically reduplicated. Adjectives can
be used both as modifiers and as copula’s complements. Adjectives in Akebu have cross-linguistically
rare morphosyntactic features. Firstly, when an adjective modifies the head noun
in an NP it is incorporated between the noun stem and the suffixal noun class marker. Secondly, the copula used with adjectives differs from the one occurring with nouns and locative
prepositional phrases in predicative position. Most adjectives are nominalized by conversion,
but some adjectives derive nouns by full reduplication. In Akebu, a large number of lexemes
with prototypically adjectival meanings are qualitative verbs. There is no evident semantic distribution
between adjectives and verbs. At the same time, verbs share some morphosyntactic
properties with true adjectives: like adjectives, they are incorporated between the noun stem
and the suffixal noun class markers when used as nominal modifiers; like adjectives, they can
be nominalized by means of reduplication. The resulting noun designates the subject of the action/
state if the verb is intransitive and the object if the verb is transitive. These nouns can occur
in periphrastic superlative constructions similarly to nouns derived from true adjectives.

dc.description.sponsorship

value: Работа выполнена в рамках проекта РНФ 17-78-20071.

dc.relation.ispartofseries

value: Vestnik of St Petersburg University. Asian and African Studies;Volume 10; Issue 1

value: Kwa

value: Akebu

value: adjectives

value: qualitative verbs

value: factative

value: reduplication


dc.contributor.author

value: Bushuev, Evgeny S.

dc.identifier.citation

value: Bushuev E. S. The Abhiṣekanirukti in the context of Buddhist tantric literature: Conceptual features and functional usage of the treatise. Vestnik SPbSU. Asian and African Studies, 2018, vol. 10, issue 1, pp. 57–67.

dc.description.abstract

value:
The publication is focused on the Abhiṣekanirukti, a Buddhist tantric treatise of the eleventh
century composed by Sujayaśrīgupta. The treatise is viewed in the context of Indian Buddhist
Tantric literature and ritual practice. In the scope of this study the main conceptual features
of the treatise are exposed. Sujayaśrīgupta is identified as a proponent of the view that the
classical Mahāyāna (‘the path of perfections’, pāramitānaya) and Vajrayāna, the tantric form
of Mahāyāna (‘the path of mantras’, mantranaya), are different in their methods (naya), but
not in the goal. The affiliation of Sujayaśrīguta to the classical Yogācāra school of Mahāyāna
philosophy and to the Jñānapāda school of Guhyasamājatantra exegesis is identified. Additionally,
the author proposes a hypothesis about the title and makes an assumption concerning
a plausible functional usage of this Buddhist work.

dc.language.iso

value: ru

dc.publisher

value: St Petersburg State University

value: Abhiṣekanirukti

value: Sujayaśrīgupta

value: tantra

value: Tantric Buddhism

value: treatise

value: initiation

dc.type

value: Article


dc.contributor.author

value: Tarando, Elena E.

dc.identifier.citation

value: Tarando E. E. Sociology of property: From the ideas of K. Marx to the St. Petersburg school of economic sociology. Vestnik of Saint Petersburg University. Sociology, 2018, vol. 11, issue 1, pp. 20–31.

dc.description.abstract

value:
The article outlines the conceptual foundations of the sociology of property when it is institutionalized
within the framework of domestic economic sociology. It is noted that Marxist sociology and political economy became the theoretical and methodological basis of this new
direction of sociological science. The need for the emergence of a sociology of property was
declared by the founder of the St. Petersburg school of economic sociology V. Ya. Elmeev,
who developed Marx’s ideas on the social nature of property in relation to the modern level
of development of social sciences, in particular, sociology. Yelmeyev’s students developed his
ideas about the existence of public property relations in the social and economic system and
postulated the incorrectness of posing the question either only about private property or only
about public property, since both types of property at least coexist in the social system. Such
coexistence and interaction determines the need for studying not only the processes that are
realizing them, but also the niches that are occupied with this or that form of ownership.

dc.relation.ispartofseries

value: Vestnik of St Petersburg University. Sociology;Volume 11; Issue 1

dc.subject

value: sociology of property

value: public property

value: the socialization of property

value: the interaction of private and public property


dc.contributor.author

value: Ugarova, Anastasiia S.

dc.identifier.citation

value: Ugarova A. S. Paradoxes of genetic testing for cancer susceptibility: Empowerment and risk. Vestnik of Saint Petersburg University. Sociology, 2018, vol. 11, issue 1, pp. 94–104.

dc.description.abstract

value:
The 21st century is recognized as the age of genetics due to significant discoveries that have
revolutionized the understanding of the human genome. This turn largely determined the
possibilities of modern preventive medicine, including the ability to diagnose the likelihood of
disease on the basis of analysis of human genes. For cancer treatment, a serious disease recognized
as socially significant, these discoveries provided new resources in the fight against the
disease, which, ultimately, should lead to a reduction in morbidity and mortality. However, the
emergence of this treatment technology has offered new questions related to ethical, social,
economic, cultural and other aspects of genetic testing for cancer susceptibility. The article is
devoted to the social aspects of genetic testing for susceptibility to breast cancer (mutations in
the BRCA1/2 genes). Readers are offered a brief overview of the existing research areas, and
also proposed an analysis of the paradoxes arising due to the development of genetic testing
technology.

dc.language.iso

value: ru

dc.subject

value: empowerment

value: risk

value: oncology

value: genetic testing

value: cancer susceptibility

value: breast cancer


dc.contributor.author

value: Artyushin, Boris S.

value: Movchan, Konstantin N.

value: Lebedeva, Elena A.

value: Bondarenko, Maxim A.

value: Rusakevich, Kseniya I.

value: Iskhakov, Renat B.

dc.identifier.citation

value: Artyushin B. S., Movchan K. N., Lebedeva E. A., Bondarenko M. A., Rusakevich K. I., Ishakov R. B. About computer modeling of blood flow in the arteries of the legs. Vestnik of Saint Petersburg University. Medicine, 2018, vol. 13, issue 1, pp. 24–37.

dc.description.abstract

value: Used in medical practice, schemes of assessment of the arterial bed and prediction of treatment outcomes is ambiguous in its objectivity. Development of new methods for assessment of the arterial bed, of predicting the course of atherosclerosis of the arteries of the lower extremities, to select the optimal method of revascularisation of the arterial bed of the legs is a topical task of science and practice. On the basis of parameters obtained from the analysis of data, an instrumental examination of 10 employees (computer tomography, ultrasonic research of vessels of lower extremities) created a mathematical model of blood flow in the arteries of the legs at different localizations of their occlusive-stenotic lesions. The degree of stenotic changes are standardized: 20 %, 50 % and 75 %, occlusion of the artery. Changes in blood flow that occur with isolated and combined lesions of the arteries were estimated. It was demonstrated that the speed of blood flow in the stenosis of arteries of legs is increased; narrowing of the arteries lower leg > 65 % significantly reduces blood flow, and stenosis of vessels >75 % blood flow practically ceases; when combined occlusive-stenotic lesions of several arteries significant disruption of blood flow is observed with stenosis > 50 %. Occlusive-stenotic lesions not only affects the blood flow in the arteries, but also affects the hemodynamics in other vessels of the lower extremities. Modeling disorders of blood vessels in the feet can be an effective technology for the examination and treatment of patients with failure of blood supply of the lower extremities.

dc.publisher

value: St Petersburg State University

dc.relation.ispartofseries

value: Vestnik of St Petersburg University. Medicine;Volume 13; Issue 1

dc.subject

value: occlusive-stenotic lesions of blood vessels

value: computer simulation

value: atherosclerosis

value: violation of blood flow

value: arteries of lower extremities

dc.title

value: Article


dc.contributor.author

value: Proshchai, Galina A.

value: Vorokhobina, Natalia V.

value: Zagarskikh, Elena Y.

value: Partsernyak, Sergey A.

value: Partsernyak, Alexander S.

dc.identifier.citation

value: Proshchai G. A., Vorokhobina N. V., Zagarskikh E. Y., Partsernyak S. A., Partsernyak A. S. Fibroblast growth factor 21 and its influence on metabolic processes in the human body. Vestnik of Saint Petersburg University. Medicine, 2018, vol. 13, issue 1, pp. 38–45.

dc.description.abstract

value: Fibroblast Growth Factor 21 (FGF21) regulates mainly glucose and lipid metabolism. It improves insulin sensitivity, increases high-density lipoprotein, decreases serum triglyceride, low-density lipoprotein, blood glucose level and body weight. However, high circulating FGF21 levels have been found in the case of the type 2 diabetes, chronic heart disease, non-alcoholic fatty liver disease, obesity and other. These findings may indicate the FGF21 resistance or compensatory response to the metabolic stress. Thus, serum FGF21 can be seen as a potential marker of these metabolic disorders. The purpose of this review has been to summarize the scientific date of influence FGF21 on the development of the diseases which associated with metabolic disorders.

dc.language.iso

value: ru

dc.subject

value: Fibroblast growth factor 21

value: 2nd Type Diabetes Mellitus

value: Cardiovascular disease

value: Insulin resistance

value: Obesity


dc.contributor.author

value: Zakharova, Nataliia V.

value: Nizamutdinov, Igor I.

value: Musatova, Veronika V.

value: Ilinsky, Valery V.

value: Morozova, Anna Yu.

value: Bocharova, Mariia O.

value: Reznik, Aleksandr M.

value: Kostyuk, Georgiy P.

dc.identifier.citation

value: Zakharova N. V., Nizamutdinov I. I., Musatova V. V., Ilinsky V. V., Morozova A. Yu., Bocharova M. O., Reznik A. M., Kostyuk G. P. Future directions in genome-wide association studies of schizophrenia spectrum disorders. Vestnik of Saint Petersburg University. Medicine, 2018, vol. 13, issue 1, pp. 72–82.

dc.description.abstract

value:
The rapid expansion of diagnostic technologies in general and of the genome-wide association
studies method in particular brings us closer to the understanding of the etiopathogenetic
fundamentals of endogenous mental disorders. The amount of accumulated experience in
genome-wide association studies allows one to assess the importance of specific genetic
markers in the development of the diseases of interest. The introduction of screening systems
and the assessment of disease prognosis is yet to be implemented, due to conceptual and
methodological contradictions. The present review aims at analyzing the current progress
in the field of genetic studies of schizophrenia spectrum disorders. The prospects and
limitations of existing methods and the obstacles to the efficient translational application of
the achievements of GWAS and candidate gene studies are discussed. Along with the still poor
understanding of the etiology and pathogenesis of schizophrenia spectrum disorders, such
issues as the ongoing debate regarding the correct classification, as well as the large degree of
symptom heterogeneity within this group of conditions, remain a cornerstone in biological
research. A more accurate approach to phenotyping, including the application of deep phenotyping techniques, is required to form more homogenous samples for future genome-wide association and candidate gene studies of schizophrenia spectrum disorders.

dc.language.iso

value: en

dc.publisher

value: St Petersburg State University

dc.relation.ispartofseries

value: Vestnik of St Petersburg University. Medicine;Volume 13; Issue 1

value: schizophrenia

value: genetic marker

value: single nucleotide polymorphism

value: genome-wide association study

value: phenotyping


dc.contributor.author

value: Gaivoronsky, Ivan V.

value: Goryacheva, Inga A.

value: Gaivoronskaya, Maria G.

dc.identifier.citation

value: Gaivoronsky I. V., Goryacheva I. A., Gaivoronskaya M. G. Frederic Ryusch — the great Dutch anatom of the 17th century. Vestnik of Saint Petersburg University. Medicine, 2018, vol. 13, issue 1, pp. 106–112.

dc.description.abstract

value: This article examines the difficult course of life of formation of the great anatomist of the 17th century Frederik Ruysch. It the beginning, Frederik was fond of botany and studied as a druggist in the Hague. During this period he had had a keen interest in anatomy prompted by a number of discoveries in this area. Having become a druggist, he devoted much time to anatomic research and came to a conclusion about the need of receiving a medical education. He studied medicine in Leiden. Ruysch received a doctor’s degree when he was 26. He became the master of public human anatomical dissections. He acquired brilliantly the techniques of embalming anatomical preparations. As a talented anatomist he was invited as a teacher in the University of Amsterdam where he continued to improve manufacturing techniques of anatomic preparations. Ruysch collected a private unique collection which became very popular not only in Holland, but also in all Europe. Thus, having passed a long way, Ruysch became one of great anatomists of that time.

dc.language.iso

value: ru

value: Frederic Ruysch

value: Holland

value: anatomy

value: anatomic preparations

value: embalming

value: collection

dc.type

value: Article


dc.contributor.author

value: Mokrushina, Amalia A.

dc.identifier.citation

value: Mokrushina A. A. Reality and fiction in Mohammad Rabie’s novel, Otared. Vestnik SPbSU. Asian and African Studies, 2018, vol. 10, issue 1, pp. 68–74.

dc.description.abstract

value:
The article provides an overview of the modern Egyptian novel of Mohammad Rabie. It is a
dystopian piece that presents an alternative story of events that could have taken place after
the Egyptian Revolution that took place in the country in January 2011. Rabie draws a picture
of Egypt in 2025. The main protagonist of the novel, a policeman called Ahmad Otared, or as
he is also called Mercury, witnesses terrible changes happening in the country that lead up to
lawlessness, murders and robberies.

dc.language.iso

value: en

dc.publisher

value: St Petersburg State University

dc.relation.ispartofseries

value: Vestnik of St Petersburg University. Asian and African Studies;Volume 10; Issue 1

dc.subject

value: Arabic literature

value: Egyptian literature

value: modern literature

value: novel

value: dystopia


dc.contributor.author

value: Dudina, Victoria I.

value: Artamonova, Kristina N.

dc.identifier.citation

value: Dudina V. I., Artamonova K. N. Stigmatization of people living with HIV/AIDS and the problem of disclosure: Analysis of the online forum discussions. Vestnik of Saint Petersburg University. Sociology, 2018, vol. 11, issue 1, pp. 66–78.

dc.description.abstract

value:
Stigmatization of people living with HIV is the main obstacle to status disclosure. The main
difficulties in the study of stigmatization are the difficult access to stigmatized individuals and
the effect of the interviewer. Online forums are an important source of data for the research
of stigmatization of people living with HIV. The aim of the research was to find out what kind
of information regarding the stigmatization of people living with HIV/AIDS can be learned
by examining the posts of online forum users. The main focus of the study was to examine
how users perceive stigmatization in the context of status disclosure. Data collection was
conducted on the “Forum for people living with HIV/AIDS”. Fourteen sections containing
relevant discussions were selected for analysis. Data processing and analysis was carried
out with NVivo 9. It is concluded that data collection through Internet resources permits
obtaining information about vulnerable groups when the purpose of the study is not to build
explanatory models but to identify a spectrum of opinions, perceptions and behaviors.

dc.description.sponsorship

value:
Исследование выполнено при финансовой поддержке РФФИ в рамках научного проекта
№ 18-013-00726 А.

dc.language.iso

value: ru

dc.relation.ispartofseries

value: Vestnik of St Petersburg University. Sociology;Volume 11; Issue 1

dc.subject

value: stigma

value: stigmatization

value: HIV/AIDS

value: people living with HIV

value: status disclosure

value: online forum

value: data collection methods


dc.contributor.author

value: Stepanov, Alexander M.

dc.identifier.citation

value: Stepanov A. M. Transnational approach in contemporary migration studies. Vestnik of Saint Petersburg University. Sociology, 2018, vol. 11, issue 1, pp. 116–127.

dc.description.abstract

value:
The necessity of analysis of migration processes is caused by the diversity and widespread
displacement of people in the modern world. When this occurred in the late twentieth century,
changes in both the level and nature of migration associated with globalization and
geopolitical processes, changes in nature of economic relations, and critiques of theories of
assimilation and failure of the project of multiculturalism all demanded the emergence of
a new approach to migration studies; i. e., theoretical designs that were capable of analyzing
the impact of migration on both host countries and countries of origin. The paper presents
an outline of transnational approach in current migration studies. We begin with the
historical context of transnational approach’s emergence that was developed as a response
conceptual challenge of crises of assimilation and multiculturalist approaches. Then we discuss
basic assumptions and core ideas of transnationalism presented by Nina Glick Shiller,
Thomas Faist and Larissa Remennick. In conclusion, several criticisms towards transnational
approach are laid out.

dc.description.sponsorship

value:
Статья подготовлена при поддержке Российского научного фонда в рамках проекта
№ 17-78-20107.

dc.publisher

value: St Petersburg State University

dc.subject

value: migration studies

value: migration

value: transnationalism

value: transnational approach

value: modes of incorporation

value: assimilation

value: multiculturalism

dc.title

value: Article


dc.contributor.author

value: Krivulin, Nikolai K.

value: Sorokin, Vladimir N.

dc.identifier.citation

value: Krivulin N.K., Sorokin V.N. On solution of a multidimensional tropical optimization problem using matrix sparsification. Vestnik SPbSU. Mathematics. Mechanics. Astronomy, 2018, vol. 5 (63), issue 1, pp. 91–104.

dc.description.abstract

value:
In this work a complete solution for a problem of minimizing a function defined on vectors
with elements from a tropical (idempotent) semifield is proposed. The tropical optimization
problem under consideration arises, for instance, when one needs to find the best, in the
sense of Chebyshev metric, approximate solution for tropical vector equations, and occurs in
various applications, including scheduling, location and decision-making problems. To solve
the problem, first, the minimum value of the objective function is obtained, a characterization
of the solution set in the form of a system of inequalities is proposed, and one of the solutions
is presented. Next, by using a sparsification of the matrix in the problem, an extended set
of solutions, and then a complete solution in the form of a family of subsets are derived.
Procedures are described that allow reducing the number of subsets, which one needs to
examine when constructing the complete solution. It is shown how the complete solution can
be represented in parametric way in a compact vector form. The solution obtained extends
known results, which are usually confined to the derivation of one solution and do not allow
to find the entire solution set. To illustrate the main results of the work numerical examples
are given for the solution of a problem in the set of three-dimensional vectors.

dc.description.sponsorship

value: Работа выполнена при финансовой поддержке РГНФ в рамках научного проекта №16-02-00059.

dc.language.iso

value: ru

dc.relation.ispartofseries

value: Vestnik of St Petersburg University. Mathematics. Mechanics. Astronomy;Volume 5(63); Issue 1

dc.subject

value: idempotent semifield

value: tropical optimization

value: Chebyshyov approximation

value: complete solution

value: matrix sparsification


dc.contributor.author

value: Zolotin, Andrey A.

value: Tulupyev, Aleksandr L.

dc.identifier.citation

value: Zolotin A.A., Tulupyev A. L. Sensitivity statistical estimates of local aposterior inference matrix-vector equations in algebraic Bayesian networks on quanta propositions. Vestnik SPbSU. Mathematics. Mechanics. Astronomy, 2018, vol. 5 (63), issue 1, pp. 60–69.

dc.description.abstract

value:
An approach to the sensitivity analysis of local aposterior inference equations in algebraic
Bayesian networks is proposed in the paper. Basic definitions and formulations are briefly
given and the development of the matrix-vector approach of a posterior inference is
considered. The propagation of deterministic and stochastic evidences in a knowledge pattern
with scalar estimates of probabilities of truth over quantum propositions is described. For
each of the provided cases necessary metrics are introduced and transformations which
result into construction of 4 linear programming problems which solution gives the required
estimates are performed. In addition, 2 theorems that postulate the covering estimates for
both cases are formulated. The results obtained in the paper prove the correctness of models
and create a basis for investigation of local and global logic-probabilistic inference equations
sensitivity.

dc.description.sponsorship

value:
Часть публикуемых материалов получена в рамках проектов, выполненных по госзаданию СПИИРАН №0073-2014-0002 и при финансовой поддержке РФФИ (гранты №15-01-09001-а,
№18-01-00626-а).

dc.publisher

value: St Petersburg State University

value: uncertain knowledge

value: evidence propagation

value: probabilistic logic

value: algebraic Bayesian networks

value: probabilistic-logic inference

value: sensitivity statistical estimate

value: probabilistic graphical model

value: matrix-vector equations


dc.contributor.author

value: Soltakhanov, Shervani Kh.

value: Shugaylo, Timofei S.

value: Yushkov, Mikhail P.

dc.identifier.citation

value: Soltakhanov Sh.Kh., Shugaylo T. S., Yushkov M.P. On vector form of differential variational principles of mechanics. Vestnik SPbSU. Mathematics. Mechanics. Astronomy, 2018, vol. 5 (63), issue 1, pp. 147–153.

dc.description.abstract

value:
The paper introduces the variation of a vector  x, which can be interpreteed either as
a virtual displacement of a system, the variation of the velocity of a system or the variation of the acceleration of a system. This vector is used to put forward, from scalar representative
motion equations, a uniform notation of all differential variational principles of mechanics.
Conversely, this notation involves all original motion equations, which enables one to consider
the previously obtained scalar products as principles of mechanics. The same approach leads
us to a differential principle on the basis of the vector equation of constrained motion of
a mechanical system. In this form, it is proposed to retain the nonzero scalar product of
ideal constraints by the vector  x. This enables one from this notation to derive equations
involving generalized constrained forces.

dc.language.iso

value: ru

dc.relation.ispartofseries

value: Vestnik of St Petersburg University. Mathematics. Mechanics. Astronomy;Volume 5(63); Issue 1

value: nonholonomic mechanics

value: linear nonholonomic second-order constraints

value: the Lagrange second-order equations with multipliers

value: the Maggi equations

value: the generalized Lagrange second-order equations with multipliers

value: the generalized Maggi equations

dc.type

value: Article


dc.contributor.author

value: Leonov, Gennady A.

value: Aleksandrov, Konstantin D.

dc.identifier.citation

value: Leonov G.A., Aleksandrov K.D. Frequency-domain criterion of global stability for dynamical systems with Prandtl hysteresis operator. Vestnik SPbSU. Mathematics. Mechanics. Astronomy, 2018, vol. 5 (63), issue 1, pp. 105–110.

dc.description.abstract

value:
In the present work dynamical systems with Prandtl hysteresis operator are considered. For
the class of dynamical systems the frequency-domain criterion is formulated and proved. For two-dimensional dynamical system the advantage of obtained criterion compared to wellknown
Logemann Ryan criterion is demonstrated.

dc.description.sponsorship

value: Работа выполнена при поддержке РНФ (грант №14-21-00041).

dc.publisher

value: St Petersburg State University

dc.subject

value: dynamical systems

value: hysteresis

value: Prandtl hysteresis operator

value: stop operator

value: frequency-domain criteria of stability


title: In memoriam of Andrey Evgen’evich Barabanov

dc.language.iso

value: ru

dc.relation.ispartofseries

value: Vestnik of St Petersburg University. Mathematics. Mechanics. Astronomy;Volume 5(63); Issue 1

filename: 19-Barabanov(In memoriam).pdf


dc.contributor.author

value: Lebedev, Nikita M.

value: Kompaniets, Mikhail V.

dc.identifier.citation

value: Lebedev N.M., Kompaniets M. V. Critical behaviour of a O(n)-symmetric model with antisymmetric tensor order parameter: Four-loop approximation. Vestnik SPbSU. Physics and Chemistry. 2018. Vol. 5 (63), iss. 1. P. 20–31.

dc.description.abstract

value:
The critical behavior of the O(n)-symmetric φ4 model with an antisymmetric tensor order parameter
is studied by means of the renormalization group approach. Previously, this model was
studied in the framework of the three-loop approximation by means of ε-expansion with conformal
Borel resummation technique and pseudo-ε-expansion. It was shown that the results of
these approaches are in qualitative agreement with each other, however, the numerical values
of the critical indices can differ quite significantly. Moreover, the question of the sensitivity of
even qualitative results to the accounting of the higher orders of perturbation theory remained
open. In the present paper, the RG functions and critical indices of the model are calculated up
to four-loop accuracy within both approaches. Their analysis shows that the results of applying
different approaches are qualitatively consistent both with each other and with the results of the
three-loop analysis.

dc.description.sponsorship

value:
Н. М. Лебедев выражает благодарность РФФИ за финансовую поддержку в рамках гранта
16-32-00086 мол-а.

value: Vestnik of St Petersburg University. Physics and Chemistry;Volume 5(63); Issue 1

dc.subject

value: renormalization group

value: critical behavior


dc.contributor.author

value: Volkova, Marina V.

value: Granichin, Oleg N.

value: Volkov, Grigorii A.

value: Petrov, Yurii V.

dc.identifier.citation

value: Volkova M.V., Granichin O.N., Volkov G.A., Petrov Yu.V. On the possibility of sign-perturbed sums method application for the processing of dynamic tests data. Vestnik SPbSU. Mathematics. Mechanics. Astronomy, 2018, vol. 5 (63), issue 1, pp. 32–43.

dc.description.abstract

value:
Methods of measurement and prediction of materials dynamic strength are complicated
and non-standardized. The way of experimental data treatment based on incubation time
criterion is considered. In practice, we only have a finite number of noisy measurements
and limited statistical knowledge about the noise since dynamic tests are labor consuming
and each assay demands a lot of time. This strongly restricts the number of available data
treatment methods unless we are satisfied with approximate, heuristic solutions. Under the assumption of noise symmetries, we use Sign-Perturbed Sums (SPS) approach for
constructing finite-sample confidence regions which have exact confidence probabilities, i.e.
they contain the true parameter with a user-chosen exact probability for any finite data set.
It is shown that a few experimental points are enough to determine strength parameter with
accuracy proper for engineering. The proposed method is demonstrated through a number
of practical experiments.

dc.description.sponsorship

value: Работа выполнена при финансовой поддержке РНФ (грант 17-11-01053).

dc.subject

value: sign-perturbed sums

value: dynamic fracture

value: incubation time

dc.type

value: Article


dc.contributor.author

value: Zimin, Boris A.

value: Sventitskaya, Vera E.

value: Sudenkov, Yuri V.

dc.identifier.citation

value: Zimin B.A., Sventitskaya V.E., Sudenkov Yu.V. The analysis of the thermal stresses in metals due to a heat flue initiated by pulsed laser impact. Vestnik SPbSU. Mathematics. Mechanics. Astronomy, 2018, vol. 5 (63), issue 1, pp. 131–138.

dc.description.abstract

value:
The paper presents an analysis of the thermal stresses in metals due to a heat flux initiated
by pulsed laser impact. The dynamic problem of thermoelasticity is regarded as a two-stage
process. The first stage of the process is determined by the time of action of the radiation
pulse. The second stage depends on the dynamics of the heat flux after the end of action of
the radiation pulse. It is shown that, the analysis of stresses of the heat flux stage based on
the traditional system of thermoelasticity equations, as well as on the concepts of physical
mechanisms of heat flux in metals, give a similar dependence of tensile stresses on the process
of the heat flux. The tension stresses increasing in the second stage of the process due to
the electronic mechanism determine the fundamental difference between the thermal stress
pulse in metals and dielectrics observed in experiments.

dc.description.sponsorship

value: Работа выполнена при финансовой поддержке РНФ (проект №15-19-00182).

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 5(63); Issue 1

dc.subject

value: thermoelasticity

value: heat flux

value: pulsed laser radiation


dc.contributor.author

value: Kolonitskii, Petr D.

value: Dolin, Denis M.

value: Sukhodolov, Nikolai G.

dc.identifier.citation

value: KolonitskiiP.D., Dolin D.M., Sukhodolov N.G. Electrosurface and adsorption properties of nanodimensional chromium oxide. Vestnik SPbSU. Physics and Chemistry. 2018. Vol. 5 (63), iss. 1. P. 68–73.

dc.description.abstract

value:
Electrosurface and adsorption properties of chromium oxide(III) prepared by nitrate and reducing
agent combustion under microwave irradiation is considered in this work. This method of synthesis
provides the opportunity to obtain nanoparticles quickly. Electrosurface properties of the obtained chromium oxide(III) were studied. Point of zero charge for Cr2O3 in solutions of KCl with different
concentration (10−1–10−3 mole/l) has been determined by the potentiometric titration method
(pHzcp = 7.1). Following obtained data adsorption of H+ and OH− ions on the surface of oxide
was calculated. No effect of electrolyte concentration on pHzcp was found. Dependence of specific
electrical conductivity and pH on time has been studied. It was determined that the equilibrium
in the system is established within first 2 hours after contact of the oxide and solution. Based
on electrophoretic mobility data electrokinetic potential for chromium oxide(III) was calculated
(pHIEP = 7.1).

dc.relation.ispartofseries

value: Vestnik of St Petersburg University. Physics and Chemistry;Volume 5(63); Issue 1

dc.subject

value: microwave synthesis

value: nanoparticles

value: chromium oxide(III)

value: electrosurface properties


dc.contributor.author

value: Vasil’eva, Ekaterina V.

dc.identifier.citation

value: Vasil’eva E.V. Stable periodic solutions of periodic systems of differential equations. Vestnik SPbSU. Mathematics. Mechanics. Astronomy, 2018, vol. 5 (63), issue 1, pp. 14– 21.

dc.description.abstract

value:
An infinitely differentiable periodic two-dimensional system of differential equations is
considered. It is assumed that there is a hyperbolic periodic solution, as well as the presence
of a homoclinic solution to the periodic solution. It follows from the works of Sh. Newhouse,
L. P. Shil’nikov, B. F. Ivanov and others that under certain conditions a neighborhood of the
non-transversal homoclinic solution contains a countable set of stable periodic solutions,
but at least one of the characteristic exponents in these solutions tends to zero with
increasing period. Earlier, in the author’s work a two-dimensional diffeomorphism was
considered and it was shown that for a certain type of tangency of the stable and unstable
manifolds, a neighborhood homoclinic point contains a countable set of stable periodic points
with characteristic exponents bounded away from zero. The aim of the present paper is
to distinguish a class of two-dimensional periodic systems of differential equations which
Poincare transformation is a diffeomorphism that has an infinite set of stable periodic points
in the neighborhood of a nontransversal homoclinic point. It is shown that for a certain
method of tangency of a stable and unstable manifolds an arbitrary neighborhood of a
nontransversal homoclinic solution contains a countable set of stable periodic solutions.
Characteristic exponents of these solutions are separated from zero.

dc.description.sponsorship

value: Работа выполнена при частичной финансовой поддержке РФФИ (грант №16-01-00452).

dc.subject

value: nontransversal homoclinic solution

value: stability

value: characteristic exponent

dc.title

value: Article


dc.contributor.author

value: Konosevich, Boris I.

value: Konosevich, Yuliya B.

dc.identifier.citation

value: Konosevich B. I., Konosevich Yu.B. Sufficient global stability condition for a model of the synchronous electric motor under nonlinear load moment. Vestnik SPbSU. Mathematics. Mechanics. Astronomy, 2018, vol. 5 (63), issue 1, pp. 79–90.

dc.description.abstract

value:
Systems of differential equations describing the dynamics of synchronous electric machines
are periodic in the angular variable, and so they have a denumerable set of steady solutions
corresponding to the operating mode of steady rotation of the rotor. Such system is called
to be of gradient type if any solution of this system tends with time to one of these steady
rotations (equilibrium states). The gradient type system is said to be globally stable when
it has only one locally asymptotically stable equilibrium state on the period of the angular
variable. In the article the subject of investigation is the Leonov Zaretskiy model of the
synchronous electric motor (Vestnik St.Petersburg University. Mathematics, 45(4), 2012),
which includes differential equations for electric currents in the damper and excitation
windings of the rotor. The authors of this model proved that it is globally stable in the case
of zero load moment. In the present paper the load moment is assumed to be a nonlinear function of the angular velocity of the rotor, having a linear estimate. Easily verifiable
sufficient condition of global stability is obtained for this case.

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 5(63); Issue 1

dc.subject

value: synchronous electric motor

value: global stability

value: reduction method

value: LaSalle invariance principle


dc.contributor.author

value: Lavrishcheva, Liubov S.

dc.identifier.citation

value: Lavrishcheva L. S. Solution of the optimization problem of the model of variable pitch propeller in a uniform stream. Vestnik SPbSU. Mathematics. Mechanics. Astronomy, 2018, vol. 5 (63), issue 1, pp. 139–146.

dc.description.abstract

value:
The paper considers the development of numerical modeling of the flow around the variable
pitch propeller (VPP) and its subsequent optimization without the influence of ship hull. In
the first step of the work, a three-dimensional computational grid has been obtained, and
a routine work in Star-CCM+ has been automated. In the second step the technology of
the optimization VPP with strictly defined constraints has been developed. As a result, the
satisfactory increase in the efficiency of the propeller has been obtained. The analysis of the
results has been carried out and the comparison graphs of experimental data with numerical
calculation for the main hydrodynamic characteristics have been constructed. In addition,
the influence of the globalization degree of the surrogate optimization algorithm on the
quality and the speed of finding a solution within the task definition has been investigated.
The results of the work have been obtained in Krilov state research institute (KSRI) and are
being used in the applied tasks in shipbuilding.

value: propeller

value: numerical modeling

value: optimization


dc.contributor.author

value: Vorobyeva, Svetlana Ye.

value: Ivanova, Ella V.

value: Serov, Vitalii D.

dc.identifier.citation

value: Vorobyeva S. Y., Ivanova E. V., Serov V. D. Borel summation of the dynamic index z in the model A of critical dynamics with an account of the strong coupling asymptotics. Vestnik SPbSU. Physics and Chemistry. 2018. Vol. 5 (63), iss. 1. P. 13–19.

dc.description.abstract

value:
In this paper we consider the model A of critical dynamics which describes the dynamic characteristics
of the critical behavior of ferromagnets as well as other systems with a nonconserved
order parameter. For such a model the renormalization group method and the ε-expansion are
the common tool for constructing consistent perturbative expansion for critical exponents and
other universal quantities. One of the problems in this formalism is the asymptotic nature of the
series obtained within the ε-expansion, so to get reliable theoretical predictions it is necessary to
apply the Borel resummation technique. In this work we apply such a resummation technique to
the four-loop ε-expansion of the dynamical exponent z which describes the critical slowing down in the ferromagnet-type systems. The motivation of the paper is twofold: 1) improved values for
the coefficients of the ε-expansion have recently been obtained, 2) sit has been shown that incorporation
of strong coupling asymptotics into the Borel resummation technique leads to better
convergence of the resummation procedure for static models. In this investigation it was shown
that taking into account the asymptotics of the strong coupling for critical static problems also
improves the predictions of the higher terms of the series. Since the strong-coupling asymptotic
for this model is unknown, this parameter is held free and adjusted in accordance with the condition
of the most accurate prediction of the last known term from the previous ones and the rate
of convergence of the procedure.

dc.relation.ispartofseries

value: Vestnik of St Petersburg University. Physics and Chemistry;Volume 5(63); Issue 1

value: renormalization group

value: ε-expansion

value: multi-loop diagrams

value: critical exponents

value: Borel resummation

dc.type

value: Article


dc.contributor.author

value: Sorokin, Nikita S.

dc.identifier.citation

value: Sorokin N. S. Resource approach in studying the role of employees in social partnership: To methodology of research. Vestnik of Saint Petersburg University. Sociology, 2018, vol. 11, issue 1, pp. 105–115.

dc.description.abstract

value:
The article provides a survey of the theoretical ideas of resource approach and the ensuing
empirical studies of the role of employees in negotiation with employers and government.
The major theorists of resource approach are P. Bourdieu, J. Coleman, N. E. Tihonova, V. I. Il’in,
V. V. Radaev, A. N. Krasilova, and V. A. Jadov. R. Putnam and F. Fukuyama’s conception of social
capital is an alternative version of resource approach that is used for the analysis of society
as a whole. The resource approach is the strategy of scientific research of social inequality in
society, based on the analysis of structure and capacity of resources. The resource of the employee
is not always required in society or at the labour market. The required resource that
determines the status of employee is called “active”. Active converts into capital if it brings the
profit due to exceeding the expenses for its reproduction. If the employee has enough capacity
of the required social resources, he can realize his interests and influence another subjects
of the social partnership. Based on addition of Jadov’s methodology and results of synthesis
of empirical studies, we single out three interdependent levels in the structure of social resource:
socio-cultural resources, resources of social links and individual-personal resources.
Individual-personal resources determine conversion of other social resources into actives and
capitals.

dc.language.iso

value: ru

dc.publisher

value: St Petersburg State University

dc.relation.ispartofseries

value: Vestnik of St Petersburg University. Sociology;Volume 11; Issue 1

dc.subject

value: resource approach

value: resource

value: active

value: capital

value: labour relations

value: social partnership


dc.contributor.author

value: Sandzhieva, Maria A.

value: Muzalevskiy, Vasiliy M.

value: Nenajdenko, Valentine G.

value: Vasilyev, Aleksander V.

dc.identifier.citation

value: SandzhievaM. A., Muzalevskiy V.M., Nenajdenko V. G., Vasilyev A. V. Exchange of aryl groups in Friedel — Crafts alkylation of arenes in superacid by 2-halogeno- 2-trifluoromethylstyrenes. Mechanism and ways of suppression. Vestnik SPbSU. Physics and Chemistry. 2018. Vol. 5 (63), iss. 1. P. 50–58.

dc.description.abstract

value:
The protonation of 2-halogeno-2-trifluoromethylstyrenes in superacids leads to formation of benzyl
carbocations that are capable to take part in Friedel — Crafts reaction with arenes to afford 1,1-
diaryl-2-halo-3,3,3-trifluoropropanes. The reaction with strong π-nucleophiles (xylenes, anisole or
veratrole) can be complicated by exchange of aryl groups. The mechanism and ways of suppression
of this additional process were proposed.

dc.description.sponsorship

value:
Данное исследование выполнено при финансовой поддержке Фонда содействия инновациям
(№11304 ГУ/2016 от 14,04,2017).

dc.relation.ispartofseries

value: Vestnik of St Petersburg University. Physics and Chemistry;Volume 5(63); Issue 1

dc.subject

value: superelectrophilic activation

value: trifluoromethylstyrenes

value: carbocations

value: superacid

value: Friedel — Crafts reaction

value: hydroarylation of double bond

value: exhange of aryl groups


dc.contributor.author

value: Alekseev, Georgy V.

value: Kasyanenko, Nina A.

dc.identifier.citation

value: Alekseev G. V., Kasyanenko N. A. Comparison of carboplatin and cisplatin effects on DNA structure in solution. Vestnik SPbSU. Physics and Chemistry. 2018. Vol. 5 (63), iss. 1. P. 4–12.

dc.description.abstract

value:
The formation of complexes of high molecular thymus DNA with coordination compounds of platinum(
II) cisplatin and carboplatin has been examined. The absorption spectra, circular dichroism
spectra, DNA melting and change in reduced viscosity of DNA solutions containing different concentrations
of platinum compounds have been analyzed. It was shown that DNA interacts with cisplatin and carboplatin in a solution containing 0.005M NaCl. The nitrogenous bases of macromolecules
participate in binding. Spectral changes of DNA and the dependence of the reduced
viscosity of DNA solutions on the concentration of platinum compounds show similar features in
complex formation when using cisplatin and carboplatin, but at the same time they also indicate
differences in the influence of cisplatin and carboplatin on DNA structure. Apparently, unlike the
interchain cross-linking formed by cisplatin, carboplatin binds to a single DNA strand.

dc.language.iso

value: ru

dc.publisher

value: St Petersburg State University

dc.subject

value: DNA

value: platinum coordination compounds

value: cisplatin

value: carboplatin

value: complex formation in a solution

value: absorption and circular dichroism spectra

value: DNA melting

value: viscometry

dc.title

value: Article


dc.contributor.author

value: Abbasov, Majid E.

dc.identifier.citation

value: Abbasov M. E. Reduction and minimality of coexhausters. Vestnik SPbSU. Mathematics. Mechanics. Astronomy, 2018, vol. 5 (63), issue 1, pp. 3–13.

dc.description.abstract

value:
V. F. Demyanov introduced exhausters for the study of nonsmooth functions. These are
families of convex compact sets that allow to represent the main part of the increment of a
considered function in a neighborhood of a studied point in a form of MaxMin or MinMax of
linear functions. Optimality conditions were described in terms of these objects. This paved
a way for construction of new algorithms for solving nondifferentiable optimization problems.
Exhausters are not uniquely defined. It is obvious that the smaller the exhauster is the lesser
computational expenses are when working with it. Thus, problem of reduction of an available
family arises. This problem was first considered by V. A. Roshchina. She proposed conditions
for minimality and described some methods for the reduction in case when these conditions
were not satisfied. However, it turned out that the exhauster mapping is not continuous in
the Hausdorff metrics, what leads to the problems with convergence of numerical methods.
To overcome this difficulty V. F. Demyanov proposed coexhausters notion. These objects
allow to represent the main part of the increment of considered functions in a neighborhood
of a studied point in the form of MaxMin or MinMax of affine functions. One can determine
a class of functions with continuous coexhauster mapping. Optimality conditions can be
described in terms of these objects, too. But coexhausters are also not uniquely defined. The
problem of coexhausters reduction is considered in this paper for the first time. Definitions
of minimality proposed by V. A. Roshchina are used. In contrast to ideas proposed in the
works of V. A. Roshchina, conditions of minimality and the technique of reduction developed
in this paper have a clear and transparent geometric interpretation.

dc.description.sponsorship

value: Работа выполнена при финансовой поддержке РФФИ (грант №16-31-00056 мол_а).

dc.relation.ispartofseries

value: Vestnik of St Petersburg University. Mathematics. Mechanics. Astronomy;Volume 5(63); Issue 1

dc.subject

value: coexhausters

value: nonsmooth analysis

value: nondifferentiable optimization


dc.contributor.author

value: Ivanov, Boris F.

dc.identifier.citation

value: Ivanov B. F. On some addition to the H¨older inequality. Resonance case. I. Vestnik SPbSU. Mathematics. Mechanics. Astronomy, 2018, vol. 5 (63), issue 1, pp. 70–78.

dc.description.abstract

value:
Let m > 2, numbers p1, . . . , pm ∈ (1,+∞] satisfy inequality
1
p1
+ . . . +
1
pm
< 1,
and functions
1 ∈ Lp1 (R1), . . . ,
m ∈ Lpm(R1).We prove that if the set of “resonance points”
of each of these functions is not empty and so-called “resonance condition” holds as well then
there are such arbitrary small (low norm) perturbations
k ∈ Lpk (R1) that the resonance
set of function
k +
k coincides with the resonance set of function
k, 1 6 k 6 m but

t
Z0
m
Yk=1
[
k(  ) +
k(  )] d

L∞(R1)
= ∞.
Concepts of “resonance point” and “resonance condition” for functions from the spaces
Lp(R1), p ∈ (1,+∞] were introduced by the author in his earlier papers.

dc.language.iso

value: ru

dc.publisher

value: St Petersburg State University

value: the H¨older inequality


dc.contributor.author

value: Dorodenkov, Аlexander А.

dc.identifier.citation

value: Dorodenkov А.А. On the stability of the zero solution of a differential equation of the second order under periodic perturbation of a center. Vestnik SPbSU. Mathematics. Mechanics. Astronomy, 2018, vol. 5 (63), issue 1, pp. 44–50.

dc.description.abstract

value:
Small periodic perturbations of the oscillator ¨x+x2n−1 = 0 are considered, where 1 < n is a
natural number, and the right-hand side is an analytic function in the origin neighborhood
with variables x˙ , x. The equilibrium position of the given equation on stability is investigated.
As a result, sufficient conditions for asymptotic stability and instability are formulated. In
this work new periodic functions of the Lyapunov type are introduced. With their help, a
transition to the system of equations is performed, similar to the transition to a system in
polar coordinates. A system of two differential equations is obtained, the unknown functions
of which are the amplitude and the “angular” variable. Then, polynomial change of variables
in powers of the amplitude is made. The coefficients are periodic in time and “angular”
variable functions. This replacement leads to a system of differential equations with a
Lyapunov constant which in general is non-zero. Its sign determines the stability of the zero
solution of the original equation. It is important that cases of even and odd n differ from
each other. For an even n a non-zero Lyapunov constant can be found from one equation,
and for an odd one it can be found from a system of three equations. The system is solved
recurrently.

value: asymptotic stability

value: small periodic perturbation

value: oscillator


title: In memoriam of Boris Alexandrovich Ershov

dc.type

value: Article

filename: 20-Ershov(In memoriam).pdf


title: In memoriam of Svetlana Mikhailovna Seledzhi

dc.relation.ispartofseries

value: Vestnik of St Petersburg University. Mathematics. Mechanics. Astronomy;Volume 5(63); Issue 1

filename: 22-Seledzhi(In memoriam).pdf


dc.contributor.author

value: Glukhova, Maria E.

dc.identifier.citation

value: Glukhova M. E. Stereotypes of appearance in modern children’s Russian animation. Vestnik of Saint Petersburg University. Sociology, 2018, vol. 11, issue 1, pp. 128–141.

dc.description.abstract

value:
This paper represents works of Russian animation as a source of social discrimination, namely
as a mean of reproducing stereotypes about appearance. In the study, two hypotheses are tested,
the first of which is that repetitive stereotyped links “appearance-character traits” can be
identified in animated films. We assume that there is a set of visual markers that characterize
the appearance of the animated characters, while heroes that are externally labeled in a certain
way are assigned specific character traits according to the script. The second hypothesis contains
the assumption that the “patterned” external images of characters can be associated with
a certain set of situations in which this character acts. Three modern Russian animated series
(“Smeshariki”, “Barboskiny”, “Belka i Strelka. Ozornaya semeyka”) are analysed. In the first
part of the empirical study, the appearance of the characters is compared with their character,
and as a result, the main types for these cartoons are determined. In the second part, the relationship
between the type of the hero and the list of topics in the context of which he arises is
explored. Analyzing and comparing features of the external appearance of characters and their
specific traits, it was possible to find stable types: the hero, the character-girl, the clever, the
beauty, the villain. The actions of such heroes are limited to plots reproducing social stereotypes,
above all, about leadership, beauty, intellect, gender. Such a repetition of topics in which
characters are interviewed makes it possible to say that replicating stereotypes about appearance
is not a simple deliberate choice of multipliers, but a hidden reproduction of stereotypes
circulating in modern Russian society.

value: Vestnik of St Petersburg University. Sociology;Volume 11; Issue 1

dc.subject

value: discrimination on appearance

value: lookism

value: children’s animation

value: stereotypes


title: On anniversary of V. G. Osmolovskii

dc.description.abstract

value: On anniversary of V. G. Osmolovskii

dc.language.iso

value: ru

dc.publisher

value: St Petersburg State University

filename: 18-Osmolovsky(On anniversary).pdf


dc.contributor.author

value: Baidin, Aleksey E.

value: Perov, Nikolay I.

value: Romanenko, Lyudmila G.

dc.identifier.citation

value: Baidin A.E., Perov N. I., Romanenko L.G. Orbits of visual double stars discovered by Otto Struve at Pulkovo. Vestnik SPbSU. Mathematics. Mechanics. Astronomy, 2018, vol. 5 (63), issue 1, pp. 154–164.

dc.description.abstract

value:
Orbits of 17 visual double stars discovered by Otto Struve at Pulkovo STT 28, 75, 119,132,
182, 201, 228, 241, 250, 296, 369, 383, 424, 430, 435, 462, 520 are calculated for the first
time. Both visual observations XIX–XX centuries by means of the micrometric technique
and modern observations in according with the fourth interferometric catalog are used. All
the presented stars had been observing for more than hundred years. But these observations
cover arcs only from 10 to 50 degrees for this long-term interval. There are some problems
of orbit determinations if a method based on the of short arc observations. The new method
improving a method of Hartkopf et al is suggested in this work. The new method is globally
converging and uses genetic algorithms for saving of time of calculations. It is possible to use
additional data (sum of masses of the components and relative radial velocities) to increase
the accuracy of the results. The relative radial velocities are unknown for presented 17 stars;
therefore we use only masses of components which are obtained from photometric data of
the Tycho catalog. All these stars are located far from the Sun, therefore their orbits can be
considered as preliminary ones. With using the radial velocity value only the orbit of STT
547 is calculated. This is the control star, because there are a lot of variants of this orbit
which has been obtained by different authors, and the radial velocities of components are
well known. We obtained three variants of the orbit for this star. All the orbits fit with each
other and the recent observations, and the calculated dynamic masses are in agreement with
photometric data. Orientation of the received orbits in a galactic frame is also calculated
and for 11 of 18 cases the planes of the orbits are steeply inclined to the Galaxy plane.

dc.subject

value: visual double stars

value: orbital elements

value: new methods of orbit determination

value: genetic algorithms

value: orientation of orbits in a galactic reference frame


dc.contributor.author

value: Rozhkova, Yuliia A.

value: Malkin, Vladimir M.

value: Korotkov, Valentin I.

value: Tsyganenko, Alexey A.

dc.identifier.citation

value: Rozhkova Yu. A., Malkin V. M., Korotkov V. I.†, Tsyganenko A. A. A study of acridine adsorption on silica by the methods of luminescence and IR spectroscopy. Vestnik SPbSU. Physics and Chemistry. 2018. Vol. 5 (63), iss. 1. P. 40–49.

dc.description.abstract

value:
Spectra of luminescence and its excitation as well as IR spectra of acridine adsorbed from the gas
phase or from the solution in dichloromethane on silicon dioxide (mesoporous MCM-41 and aerosil)
have been studied. The luminescence band of adsorbed acridine is shifted towards longer waves
as compared with the spectrum of acridine in dichloromethane and towards short wavelengths
with respect to the spectrum of protonated acridine in solution. In the IR spectrum, acridine
adsorption leads to a frequency shift of the band of surface silanol groups from 3750 to 2860 cm−1
and to the appearance of absorption bands of the adsorbed acridine. Addition of SO2 results in
acridine protonation with the shift of the 1624 band to 1653 cm−1. The obtained data indicate
that acridine forms hydrogen bond with silanol groups of silica surface. In the case of acridine
adsorption from dichloromethane, or after extended storage of the sample in acridine vapor, the
luminescence band is observed at 520 nm, that is explained by self-association of acridine.

dc.description.sponsorship

value: Работа поддержана Российским фондом фундаментальных исследований, грант 17-03-01372.

dc.relation.ispartofseries

value: Vestnik of St Petersburg University. Physics and Chemistry;Volume 5(63); Issue 1

dc.subject

value: IR spectroscopy

value: luminescence

value: adsorption

value: acridine

value: proton transfer

value: silicon dioxide

value: excimers

value: hydrogen bond

value: surface

dc.type

value: Article


dc.contributor.author

value: Nasriddinov, Subhiddin K.

value: Badalov, Abdulhayr B.

dc.identifier.citation

value: Nasriddinov S.K., BadalovA.B. Laws of change of thermodynamic properties of 3d compounds — elements(II) — fluorides and chlorides. Vestnik SPbSU. Physics and Chemistry. 2018. Vol. 5 (63), iss. 1. P. 59–67.

dc.description.abstract

value:
The possibility of using a semi-empirical method for the evaluation of the thermodynamic properties
of fluorides and chlorides 3d metals in the oxidation state (+2) and the establishment of
regularities of their changes depending on the nature of the metal cations and anions is presented.
The method developed by Poluektov N. S. and his colleagues takes into account the peculiarities
of the electronic structure of 3d metals and their influence on the determined properties of the
compounds. The calculated values of the thermodynamic characteristics — enthalpy of formation,
entropy and heat capacity – for the more studied of the chlorides 3d metal compounds are
in good agreement with the reference. This demonstrates the competence of the method for the
calculation and evaluation of unknown characteristics of 3d metals. The most complete information
about the thermodynamic characteristics of fluorides and chlorides 3d metals defined and/or
refined by this method are obtained. It is found that the patterns of variation of these properties
depending on the nature of the cations and anions are complex. The curves of these patterns which are dependent on the nature of metal are separated by subgroups based on the partial (for
manganese ions) or full (for zinc ions) filling of 3d-orbitals by electrons. According to characteristics,
copper and chromium compounds fall outside the general pattern. The equations expressing
these curve patterns for subgroups 3d metals are here compiled.

dc.language.iso

value: ru

dc.publisher

value: St Petersburg State University

dc.subject

value: fluorides

value: chlorides

value: semi-empirical method

value: thermodynamic characteristics

value: patterns


dc.contributor.author

value: Plotnikov, Sergei A.

value: Fradkov, Alexander L.

value: Shepeljavyi, Alexander I.

dc.identifier.citation

value: Plotnikov S.A., Fradkov A. L., Shepeljavyi A. I. Thе speed-gradient algoritm in the inverse Stoker problem for a synchronous electric machine. Vestnik SPbSU. Mathematics. Mechanics. Astronomy, 2018, vol. 5 (63), issue 1, pp. 111–118.

dc.description.abstract

value:
The problem of oscillation energy control of an electric machine rotor by means of an external
moment is considered on the example of a simple mathematical model. The speed-gradient
method is applied to solve this problem. The using of small or bounded control is a feature
of this approach, which helps to save energy. The control algorithm of the rotor oscillations
of an electric machine is developed, with the use of which a predetermined number of cycle
slippings performs. The simulation results illustrate the efficiency of the suggested algorithm.

dc.description.sponsorship

value:
Работа выполнена при финансовой поддержке РФФИ (проекты 17-08-01728, 17-08-00715),
СПбГУ (тема 6.38.230.2015) и Правительства Российской Федерации (грант №074-U01).

dc.relation.ispartofseries

value: Vestnik of St Petersburg University. Mathematics. Mechanics. Astronomy;Volume 5(63); Issue 1

dc.subject

value: Stoker problem

value: speed-gradient algorithm

value: energy control

value: electric machines


dc.contributor.author

value: Vinogradov, Oleg L.

value: Ulitskaya, Anastasiya Yu.

dc.identifier.citation

value: Vinogradov O.L., Ulitskaya A.Yu. Sharp estimates for mean square approximations of classes of differentiable periodic functions by shift spaces. Vestnik SPbSU. Mathematics. Mechanics. Astronomy, 2018, vol. 5 (63), issue 1, pp. 22–31.

dc.description.abstract

value:
Let L2 be the space of 2 -periodic square integrable functions; E(f,X)2 is the best
approximation of the function f by the space X in L2. For n ∈ N, B ∈ L2 we denote
by SB,n the space of functions s of the form
s(x) =
2n−1
Xj=0
 jB  x −
j
n  .
In this paper, we give a description of all spaces SB,n for which the sharp inequality
E(f, SB,n)2 6
1
nr kf(r)k2
holds. In doing so, we indicate the subspaces of dimension 2n − 1 that provide the same
estimate. The well-known inequalities for approximation by trigonometric polynomials and
splines are obtained as particular cases.

dc.language.iso

value: ru

dc.publisher

value: St Petersburg State University

dc.subject

value: best approximation

value: shift spaces

value: sharp constants

dc.title

value: Article


dc.contributor.author

value: Rakhmelevich, Igor V.

dc.identifier.citation

value: Rakhmelevich I.V. Multi-dimensional non-autonomous equation contaning the production of powers of partial derivatives. Vestnik SPbSU. Mathematics. Mechanics. Astronomy, 2018, vol. 5 (63), issue 1, pp. 119–130.

dc.description.abstract

value:
We consider a class of multidimensional partial differential equations, containing the
production of powers of partial derivatives of arbitrary order. As a result, solutions with
additive, multiplicative and combined separation of variables are received. The family of
pseudo-polynomial solutions which are expressed through the polynomials on independent
variables with arbitrary coefficients is received, as well as functions which are the solutions
of some ordinary differential equations. The solutions of travelling wave type and selfsimilar
solutions are founded. Also the families of solutions which have a form of the
sum or the production of the solutions of travelling wave type and self-similar solutions
are received. Furthermore, the solutions representing as the functions of more complicated
arguments which are expressed through the linear combinations and the productions of
initial independent variables are received. The conditions of existence have been formulated
for all received solutions, and the right side of equation and its parameters must satisfy these
conditions.

dc.subject

value: partial differential equation

value: method of separation of variables

value: power-law nonlinearity

value: solution of travelling wave type

value: self-similar solution

value: pseudo-polynomial solution


dc.contributor.author

value: Zakharenkov, Maksim S.

dc.identifier.citation

value: Zakharenkov M. S. Stabilization of some class of uncertain systems. Vestnik SPbSU. Mathematics. Mechanics. Astronomy, 2018, vol. 5 (63), issue 1, pp. 51–59.

dc.description.abstract

value:
Consider the problem of stabilizing control u synthesis for systems
dx
dt
= Ax + Bu,
where A ∈ Rn×n,B ∈ Rn×m. Elements  i,j(·) of matrix A are uniformly bounded functionals
of arbitrary nature. In case of continuous system matrix B elements are also continuous
and uniformly bounded functionals. In case of pulse-modulated system matrix B elements
are differentiable uniformly bounded functions of time. Assumed that k isolated uniformly
bounded elements  il,jl (·) exist over the main diagonal of matrix A(·) such as
inf
(·)
| il ,jl (·)| ≥  − > 0, l ∈ 1, k.
Gk is a set of isolated elements existing in the system. J1 is a set of indexes of rows of matrix
A(·), where isolated elements are located and J2 is a set of indexes of rows of matrix A(·),
where isolated elements do not exist. Assumed that other elements located over the main
diagonal with indexes from J1 are sufficiently small.
sup
(·)
| i,j (·)| <  ,  i,j /∈ Gk, i ∈ J1, j > i.
Other elements located over the main diagonal are uniformly bounded.
In continuous case u = S(·)x, in pulse-modulated case u =  (t), where vector
components are outputs of synchronized pulse elements.
Using construction of special quadratic Lyapunov function one can determine S(·),
such that for continuosed case closed loop system is globally exponentially stable. In pulsemodulated
case such output pulses are synthesised so that system is globally asymptotically
stable.

dc.description.sponsorship

value:
Работа выполнена при финансовой поддержке СПбГУ (тема 6.38.230.2015) и РФФИ (грант
17-01-00102а).

dc.relation.ispartofseries

value: Vestnik of St Petersburg University. Mathematics. Mechanics. Astronomy;Volume 5(63); Issue 1

value: uncertain pulse-modulated systems

value: uncertain systems stabilization


title: In memoriam of Valentin Fedorovich Kuropatenko

dc.language.iso

value: ru

dc.publisher

value: St Petersburg State University

dc.type

value: Article

filename: 21-Kuropatenko(In memoriam).pdf


title: Contextualizing Talent Management in Russian IT Companies

dc.contributor.author

value: Kabalina, Veronika I.

value: Mondrus, Olga V.

dc.identifier.citation

value: Kabalina V. I., Mondrus O. V. 2018. Contextualizing talent management in Russian IT companies. Russian Management Journal 16 (1): 5–36.

dc.description.abstract

value:
This article presents the results of a comparative qualitative study of talent management systems
in six large companies from the information technology industry conducted by the authors in
2015–2017. Applying a contextual approach to the study of management practices, the authors
have identified of external and internal factors affecting the definition of talented employees and
the choice of tools for working with them, as well as a feedback of talent management systems on
the context. The article contributes to the theory by describing the interaction between context
and management system and explaining the industry model of talent management in the IT sector.
The authors also proposed a new concept of “flexible talent pool” and showed a practical solution
to the theoretical dilemma of “inclusivity — exclusivity” when identifying talented employees by
IT companies and the dilemma of internal vs. external sources for hiring talents.

dc.relation.ispartofseries

value: Russian Management Journal;Volume 16; Issue 1

dc.subject

value: talent management

value: contextualisation

value: IT companies

value: Russia


title: Key Features of Social Responsibility and Business Ethics for Small and Medium Enterprises in Russia

dc.contributor.author

value: Cheglakova, Liudmila M.

value: Bataeva, Bela S.

value: Melitonyan, Olga A.

dc.identifier.citation

value: Cheglakova L. M., Bataeva B. S., Melitonyan O. A. 2018. Key features of social responsibility and business ethics for small and medium enterprises in Russia. Russian Management Journal 16 (1): 63–94.

dc.description.abstract

value:
This paper investigates how owners and managers of Russian SMEs understand the terms “social
responsibility” and “business ethics”. Also key features of SMEs’ responsible behavior are
examined. An investigation, which laid the background of the paper, included gathering primary
data through 57 in-depth interviews with representatives of SMEs from various industries.
Research results indicate a gap that respondents have while identifying a subject of responsibility
in their own definitions of social responsibility and business ethics, and in practical
activities of their companies. Practically every second respondent identified ethical conflicts in
their business practice and was involved in resolving them. This allows to conclude that ethical
responsiveness is quite high among owners and managers of Russian SMEs. Socially responsible
and ethical behavior of these companies is aimed at achieving long-term strategic advantages
for businesses through constant care about customers and employees and fulfilling requirements
of legal authorities. Social responsibility of small and medium enterprises in Russia is mostly
desultory and related to core businesses of these firms.

dc.subject

value: small and medium enterprises

value: socially responsible business

value: business ethics