bluuebunny/crossref_metadata_2025_split huggingface dataset:
Application of a hybrid large-particle method for calculating multicomponent gas mixture flows
Authors: Садин Д.В. 
Published: August 2021

Статья посвящена обобщению гибридного метода крупных частиц для численного моделирования течений многокомпонентных газовых смесей при наличии границ раздела газов с различными термодинамическими свойствами. Метод относится к алгоритмам сквозного расчета разрывов. Разностная схема является консервативной, однородной и имеет второй порядок аппроксимации по пространству и времени на гладких решениях. Результаты проверки на тестовых задачах в широком диапазоне чисел Маха и отношений газодинамических параметров подтвердили работоспособность метода. Выполнен анализ численных ошибок в окрестности контактных разрывов на сетках различного разрешения, свидетельствующий о сходимости результатов расчета к автомодельным решениям.
This paper is devoted to a generalization of a hybrid large-particle method for the numerical simulation of multicomponent gas mixture flows in the presence of gas interfaces with various thermodynamic properties. The method belongs to the class of shock-capturing and interface-capturing algorithms. The employed difference scheme is conservative and uniform and possesses the second order approximation in space and time on smooth solutions. The obtained numerical results show the efficiency of the method in a wide range of Mach numbers and ratios of gas dynamic parameters. The error analysis performed near the contact discontinuities on grids of various resolutions confirms the convergence of numerical results to the self-similar solutions.
Use of the computational topology to analyze the pore space changes during chemical dissolution
Authors: Хачкова Т.С. , Базайкин Я.В. , Лисица В.В. 
Published: August 2021

Представлен алгоритм построения персистентных диаграмм для оценки изменения топологии матрицы породы при взаимодействии с химически активным флюидом. В пространстве персистентных диаграмм вводится метрика, которая позволяет выполнять их кластеризацию для количественной оценки схожести изменений топологии порового пространства в процессе растворения матрицы породы. На основе такой кластеризации показано, что одним из доминирующих параметров в процессе химического взаимодействия флюида с породой в пластовых условиях являются скорость реакции и коэффициент диффузии, в то время как скорость потока оказывает существенно меньшее влияние.
A new algorithm for constructing the persistence diagrams to estimate the changes in the rock matrix topology during the chemical fluid-solid interaction. In the space of the persistence diagrams, a metric is introduced, which allows one to clusterize the diagrams in order to estimate their dissimilarities in the topology changes. This clusterization shows that the main parameters affecting the topology of the rock matrix are the reaction rate and the diffusion coefficient, whereas the fluid flow rate makes a smaller effect on the topology.
A software package for the mathematical simulation of fracture in a thermo-poroelastic medium
Authors: Меретин А.С. 
Published: August 2021

Приведено описание программного комплекса для математического моделирования эволюции термопороупругой среды с учетом ее разрушения. Используемая математическая модель является модификацией модели Био для случая термопороупругих сред и позволяет моделировать изменение напряженно-деформированного состояния среды, фильтрацию флюида, неизотермические эффекты, а также разрушение среды. Разрушение среды описывается с использованием подхода континуальной механики разрушения путем введения дополнительной переменной, называемой параметром повреждаемости. Этот параметр характеризует степень разрушения среды, а его эволюция определяется заданным кинетическим уравнением. Вычислительный алгоритм основан на методе конечных элементов. Дискретизация уравнений по времени производится по неявной схеме для перемещений, давления и температуры и по явной для параметра повреждаемости. В качестве конечных элементов выбраны элементы Тейлора-Худа, имеющие второй порядок аппроксимации по перемещениям и первый по давлению и температуре. Система уравнений решается в рамках монолитной постановки без итерационного связывания между группами уравнений. Рассмотрены результаты расчетов с использованием программного модуля на примере задачи термического воздействия на нефтяной пласт.
A software package for the mathematical simulation of thermo-poroelastic medium evolution with damage is considered. The employed model is a modification of the Biot model for thermo-poroelastic media and allows one to simulate the changes in the stress-strain state of the medium, the fluid flows, the nonisothermic effects, and the medium fracture. The medium damage is simulated using the continuum damage mechanics approaches by introducing a special variable called the damage parameter. This parameter characterizes the degree of medium fracture and its evolution is described by a given kinetic equation. The numerical algorithm is based on a finite element method. The time discretization is performed using an implicit scheme for displacements, pressure, and temperature and an explicit scheme for the damage parameter. The Taylor-Hood finite elements of second-order approximation in displacements and first-order approximation in pressure and temperature are chosen. The system of equations is solved in the framework of the monolithic formulation without the iterative coupling between groups of equations. The numerical results of solving the problem on the rock damage evolution due to thermal action are discussed.
Sustainability of the state system in the context of digital transformation
Authors: Kornilovich V. A. , Aramyan K. A. , Milekhin A. V. , Mironov A. V. 
Published: August 2021

The digital transformation of the structural components of the state system forms new socio-organizational forms and practices of political interaction. The transformation process is based on the dialectical overcoming of existing elements of the old order, the development of new goals and the formation of new specific ways to achieve them. As a result of the digital transformation of the structural components of the state system, new socio-organizational forms and practices of political interaction are being formed. Before our eyes, the transition of initially networked social formations into political offline processes is unfolding, new power resources and mechanisms of influence on the political organization as a whole are emerging in society. These processes relate to social self-organization and are characteristic of the adaptive algorithm of social changes. At the same time, changes in system parameters do not violate the contours of the existing state system. However, in the conditions of deliberate stimulation by the authorities of the digital transformation of all spheres of society’s life, the limited ability of the political system and the state to ensure the manageability of social and political processes is more clearly manifested.The article considers the process of deformation of the state system caused by the digitalization of public relations, analyses changes in theoretical models of explaining social reality and related changes in the organization of the political system and political practices.The multi-component nature of the impact of the global ICT paradigm on the sphere of public administration of a particular state is noted. In the era of the diversity of broadcast information, the dominance of the mass media and social networks, the public becomes a mass / crowd and an object of manipulation. The impact of information and communication technologies on the functioning of society is manifested in maintaining the gap between formal and informal institutions, intensive introduction of innovations, launching new mechanisms of social inequality, and the like, as a result, the integrity of the social system is violated. The risk of loss of manageability of social processes increases due to the fact that the recommendations for authorities on digital transformation, as well as most scientific publications on the topic of digitalization of public administration do not contain a critical assessment of the ICT paradigm itself and the concepts, concepts and practices formed on its basis.
The role of the Internet in formation of the protest mood of the region’s population
Authors: Dementieva I. N. 
Published: August 2021

This article analyses the degree of Internet penetration and the level of involvement of the Vologda region residents in the information and communication space. The author made an attempt to establish the existence of a connection between the protest moods of the residents of the region and the use of Internet resources, including for participation in public life. The information and empirical base of the study was the data of the monitoring of public opinion conducted by the Vologda Research Center of the Russian Academy of Sciences on the territory of the region.The results of the study showed that in recent years there has been a significant increase in the use of Internet technologies and social networks. According to calculations, the demand for information provided by the electronic mass media is increasing among the residents of the region who show protest moods, and the level of trust in this communication channel is growing. However, there is no direct correlation between the dynamics of the growth of Internet engagement and protest moods. The Internet and social media are not a factor of protest potential. They act as an information and communication platform that creates a technical opportunity for public discussion and facilitates the organization of protest moods. At the same time, the Internet can strengthen the effect of other factors, such as: dissatisfaction of the population with their own material well-being and the general economic situation in the country and the region, disapproval of the activities of the authorities, uncertainty of prospects and uncertainty in the future.
Digital society: theoretical outlines of the emerging paradigm
Authors: Chernavin Yu. A. 
Published: August 2021

The large-scale changes in the life of modern society caused by digitalization, as well as numerous studies of various manifestations and aspects of this process, give rise to the need to develop a concept of a digital society. The attempt to solve this research problem, implemented in the article, represents one of its possible models.In the proposed model, the digital society is considered as the next stage of post-industrial development and an element of modern global technogenic civilization. The implementation of the plan is based on the institutionalization of digital public relations. The basis of the process is the construct “human – knowledge – communication networks – computer technology”. Its elements in the course of interaction give rise to digital formal and informal institutions in the economy, politics, culture, and social life; form a new structural element of society – the digital information sphere; develop into a whole as a digital society. Digital institutions and the digital sphere, acting as mechanisms for the emergence of society, rely on their own type of activity, have a new type of personality as a subject – “information person”.The analysis, undertaken within the framework of the neo-institutional approach, the features of the socialization of e-Homo Sapiens are revealed, based on the need for presence and activity in the information space, taking into account the impact of modern information technologies, which ultimately contribute to the inconsistency of the emerging typological properties. The decisive role of the human factor in the emergence of the digital society as a knowledge society made it necessary to rely on the principle of social determinism for the entire research structure. This technique allowed us to substantiate the conclusion about the human creator, the subject of social existence as the main characteristic and source of development of the digital society. Any changes in the indicators of subjectivity will serve as factors for the appearance of components of a future civilization based on this society, the contours of which are not transparent today.
Theoretical and methodological aspects of personal brand formation in the digital environment
Authors: Dovzhik G. V. , Dovzhik V. N. , Musatova S. A. 
Published: August 2021

The article considers the theoretical and methodological aspects of the formation of a personal brand, describes modern approaches to the interpretation of the concepts of brand and personality brand. The main structural elements of a personal brand are analysed, its socio-psychological essence is determined. The emphasis is made on the practical significance of the formation of a personal brand, the components, properties and areas of application of a personal brand are considered.The models of personality brand formation in both offline and online environment are described in accordance with the structural and substantive transformations currently taking place in the information sphere and the factors that influence the effectiveness of communication through a personal brand. These are, first of all, such factors as the widespread of artificial intelligence technologies into everyday life, tools for logical data integration, a significant increase in the number of Internet users. All of the above factors largely determine the nature and degree of social influence of influencers on the behavior of individuals in society.In addition, much attention is paid to the analysis of existing models of personal brand formation, which form the theoretical and methodological basis of a personal brand. If we consider a brand as a tool that stimulates the consumer to a certain action, then in the case of a product brand, such an action will be the fact of buying a product or service directly. If we are talking about a personal brand, then the frequency of consumption of content created by a particular media personality will act as an action. In turn, it is possible to increase the frequency of content consumption by choosing the optimal model of brand communication with consumers. That is why it is especially relevant to study the theoretical and methodological aspects of the formation of a personal brand through online tools in the process of creating a personal brand.
experts e a produção de saberes para a docência: Primeiros estudos do acervo Lydia Lamparelli
Authors: Almeida André Francisco de , Valente Wagner Rodrigues 
Published: August 2021

Este artigo apresenta resultados parciais de projeto de pesquisa intitulado Os experts e a aritmética para ensinar nos primeiros anos escolares, São Paulo (1961-1996). Abordar o saber profissional do professor que ensina matemática é o tema desse projeto, que busca tornar inteligível o papel de experts na sistematização de uma aritmética para ensinar. Este texto traz as primeiras análises da produção de Lydia Lamparelli, constituída como expert, a partir de referências bibliográficas tomadas para este estudo. Os primeiros resultados revelam possibilidades que acervos pessoais podem dar à caracterização do saber profissional do professor que ensina matemática.
New diplomatic history: formation, research directions and perspectives
Authors: Mazarchuk D. V. 
Published: August 2021

The paper analyses the main methodological principles of the direction in studying the history of diplomacy – New diplomatic history. The precondition for the formation of this historiographical trend was the transition from a teleological and state-centered perception of history to actor-centrism (as applied to the history of diplomacy).The main stages of development of the New diplomatic history are revealed. The substantive aspects of criticism of the classical approach to the history of European diplomacy and the process of the emergence of a permanent embassies mission are considered. In general, modern scholars are inclined to the problematic nature of identifying precise criteria for the permanent nature of diplomatic representation in the Early Modern period.Examples of studies of various aspects of diplomatic history within the framework of the New diplomatic history are given. The socio-cultural aspects of the activities of a diplomat of the Modern period come to the fore in the research topics of representatives of this direction. In this regard, the attention of scientists is extended to such topics as the symbolic language of diplomacy, the role of art, everyday life in the work of a diplomat, informal channels of diplomacy, reﬂection of diplomats.The characteristics of new basic sources for the study of the history of diplomacy in the Modern period are given. Modern historians pay great attention to personalized groups of sources, such as personal correspondence and memoirs of diplomats.
“From the depths of the native land...” (Unknown poems by the West Belarusian poet Janka Malanka)
Authors: Mikulich M. U. 
Published: August 2021

The article analyzes the unknown poems of the West Belarusian poet, prose writer, publicist and artist Yanka Malanka (1895 – 1938). Considering the characteristic features of the creative personality of Ya. Malanka, the author notes the richness of the problem-thematic content, as well as the variety of genre-structural forms of the poet’s works, who wrote not only poetry, but also sketches, stories, fairy tales, jokes, feuilletons, political ditties, etc. others. Sincerity and warmth presupposed in them a characteristic internal mobilization and tension were supplemented by an oﬀensive logic of thinking, lyrical ridicule was intensiﬁed by the pathos of civic spirit and patriotism, as well as humorous-satirical revealing and exposure.The leading motives and images of Ya. Malanka’s poetic creativity are revealed. At the same time, it is emphasized that a cheerful mood, categorical invectives, heightened emotionality were intensiﬁed in him by hyperbolized images and grotesque drawings. Ya. Malanka combined the accuracy of realistic reﬂection of phenomena and events with the peculiarities of the romantic elevation of the hero’s aspirations and impulses, lyrical spontaneity and penetration were complemented by journalistic and satirical sharpness. Attention is drawn to a certain sketchiness of the word-image of the poet, “primitive accuracy” of his ideas and thoughts, roughness of style and linguistic constructions.
Features of providing addiction medical care during the pandemic COVID-19
Authors: Rybakova K. V. , Grigorev A. V. , Semenova N. V. , Skurat E. P. , Zubova E. Yu. , Neznanov N. G. , Krupitsky E. M. 
Published: August 2021

Patients with substance use disorders represent a vulnerable population who are at risk of getting coronavirus due to several factors related to their clinical, psychological, and psycho-social characteristics. The goalof this study was to examine the features of a medical condition in patients with alcohol use disorder who are admitted to the addiction hospital and to describe the specific issues of the addiction care RF region during a pandemic.Material and methods.The online survey has been distributed to 55 addiction psychiatrists from the third-level medical organizations of 4th federal districts (including Northwestern, South, Volga, and North Caucasian) from June 09 to June 20, 2020. The survey consists of 17 items (13 questions were focused on the features of progress and clinical signs of alcohol dependence in hospitalized, in-patient individuals during April-May, 2020; 4 questions were focused on the organizational issues of addiction care in the RF regions during the COVID-19 pandemic).Results.Based on the expert`s assessment, the number of admissions at inpatient and outpatient clinical settings was reduced during the pandemic. In addition, the intensity of alcohol withdrawal among patients who were hospitalized during April-May, 2020 were significantly more severe compared to patients who were hospitalized during February-March, 2020 (Pearson’s chi-squared test). Moreover, alcohol withdrawal was more severe and was associated with alcohol withdrawal delirium (4,7%) or seizures (4,7%) in 9,4% of cases among patients with COVID positive status, which exceeds the data of epidemiological studies. The intensity of alcohol withdrawal delirium among patients with COVID positive status was more severe compared to those who had COVID negative status. During April-June, 2020, the few addiction clinics were temporally closed due to quarantine but a majority of clinics were not (n = 14 (25,5%) vs. n = 41 (74,5%)).Conclusion.During the COVID-19 pandemic, the state of patients hospitalized for treatment of alcohol dependence may be considered more severe, compared to the period February-April 2020.
Correlation of anatomical involvement patterns of insular gliomas with subnetworks of the limbic system
Authors: Ülgen Ege , Aras Fuat Kaan , Coşgun Erdal , Erşen-Danyeli Ayça , Dinçer Alp , Usseli M. İmre , Özduman Koray , Pamir M. Necmettin 
Published: August 2021

OBJECTIVE
Gliomas frequently involve the insula both primarily and secondarily by invasion. Despite the high connectivity of the human insula, gliomas do not spread randomly to or from the insula but follow stereotypical anatomical involvement patterns. In the majority of cases, these patterns correspond to the intrinsic connectivity of the limbic system, except for tumors with aggressive biology. On the basis of these observations, the authors hypothesized that these different involvement patterns may be correlated with distinct outcomes and analyzed these correlations in an institutional cohort.

METHODS
Fifty-nine patients who had undergone surgery for insular diffuse gliomas and had complete demographic, pre- and postoperative imaging, pathology, molecular genetics, and clinical follow-up data were included in the analysis (median age 37 years, range 21–71 years, M/F ratio 1.68). Patients with gliomatosis and those with only minor involvement of the insula were excluded. The presence of T2-hyperintense tumor infiltration was evaluated in 12 anatomical structures. Hierarchical biclustering was used to identify co-involved structures, and the findings were correlated with established functional anatomy knowledge. Overall survival was evaluated using Kaplan-Meier and Cox proportional hazards regression analysis (17 parameters).

RESULTS
The tumors involved the anterior insula (98.3%), posterior insula (67.8%), temporal operculum (47.5%), amygdala (42.4%), frontal operculum (40.7%), temporal pole (39%), parolfactory area (35.6%), hypothalamus (23.7%), hippocampus (16.9%), thalamus (6.8%), striatum (5.1%), and cingulate gyrus (3.4%). A mean 4.2 ± 2.6 structures were involved. On the basis of hierarchical biclustering, 7 involvement patterns were identified and correlated with cortical functional anatomy (pure insular [11.9%], olfactocentric [15.3%], olfactoopercular [33.9%], operculoinsular [15.3%], striatoinsular [3.4%], translimbic [11.9%], and multifocal [8.5%] patterns). Cox regression identified hippocampal involvement (p = 0.006) and postoperative tumor volume (p = 0.027) as significant negative independent prognosticators of overall survival and extent of resection (p = 0.015) as a significant positive independent prognosticator.

CONCLUSIONS
The study findings indicate that insular gliomas primarily involve the olfactocentric limbic girdle and that involvement in the hippocampocentric limbic girdle is associated with a worse prognosis.