bluuebunny/crossref_metadata_2025 huggingface dataset:
Duplicates of conflict clauses in CDCL derivation and their usage to invert some cryptographic functions
Authors: Кондратьев В.С. , Семенов А.А. , Заикин О.С.
Published: August 2021

Изучен феномен повторного порождения конфликтных ограничений SAT-решателями в процессе работы с трудными экземплярами задачи о булевой выполнимости. Данный феномен является следствием применения эвристических
механизмов чистки конфликтных баз, которые реализованы во всех современных SAT-решателях, основанных на алгоритме CDCL (Conflict Driven Clause Learning). Описана новая техника, которая позволяет отслеживать повторно порождаемые дизъюнкты и запрещать их последующее удаление. На базе предложенных технических решений построен новый многопоточный SAT-решатель (SAT, SATisfiability), который на ряде SAT-задач, кодирующих
обращение криптографических хеш-функций, существенно превзошел по эффективности многопоточные решатели, занимавшие в последние годы высокие места на специализированных соревнованиях.

A phenomenon of conflict clauses generated repeatedly by SAT solvers is studied. Such clauses may appear during solving hard Boolean satisfiability problems (SAT). This phenomenon is caused by the fact that the modern SAT solvers are based on the CDCL algorithm that generates conflict clauses. A database of such clauses is periodically and partially cleaned. A new
approach for practical SAT solving is proposed. According to this approach, the repeatedly generated conflict clauses are tracked, whereas their further generation is prohibited. Based on this approach, a multithreaded SAT solver was developed. This solver was compared with the best multithreaded SAT solvers awarded during the last SAT competitions. According to the experimental results, the developed solver greatly outperforms its competitors on several SAT instances encoding the inversion of some cryptographic hash functions.
Statistical moments and multipoint magnetic field correlators in a galactic dynamo model with random turbulent diffusion
Authors: Грачев Д.А. , Елистратов С.А. , Михайлов Е.А.
Published: August 2021

Рассматривается стохастическая модель галактического динамо, в рамках которой коэффициент турбулентной диффузии считается случайным процессом с обновлением. Проведено численное моделирование статистических моментов, а также двухточечных и трехточечных корреляторов магнитного поля, показывающих взаимосвязь между его значениями в различные моменты времени. Продемонстрировано наличие перемежаемости, выражающейся в прогрессивном росте моментов и корреляторов в случае "спокойных" областей галактик с небольшой долей ионизованной компоненты водорода. Проведено сопоставление результатов численного эксперимента с результатами, полученными ранее аналитически.

In this paper we consider a stochastic model of the galactic dynamo in which the coefficient of turbulent diffusion is considered as a random process with renewal. The numerical simulation of statistical moments as well as two-point and three-point correlators of the magnetic field showing the relation between its values at various time instants is performed. The presence of intermittency expressed in the progressive growth of moments and correlators in the case of "quiet" regions of galaxies with a small fraction of the ionized hydrogen component is shown. The numerical results are compared with the results obtained analytically earlier.
A two-dimensional hybrid model of an open plasma trap
Authors: Генрих Е.А. , Боронина М.А.
Published: August 2021

Представлена гибридная математическая модель осесимметричной плазменной ловушки, основанная на кинетическом описании для ионной компоненты плазмы и приближении МГД для электронной компоненты. На основе гибридной модели разработан двумерный алгоритм для изучения динамики разлета инжектируемых частиц в поле ловушки. Движение ионной компоненты рассчитывается по методу частиц в ячейках, для расчета
магнитного поля и электронной компоненты плазмы используются конечно-разностные схемы. На основе разработанного алгоритма создан комплекс программ для исследования механизмов формирования
самосогласованной структуры магнитного поля ловушки.

A hybrid mathematical model of an axisymmetric plasma trap based on the kinetic description for the ion component of the plasma and the MHD approximation for the electronic component is presented. On the basis of the hybrid model, a two-dimensional algorithm is developed to study the dynamics of injected particles in the trap field. The motion of the ion
component is calculated by the particle-in-cell method. Finite-difference schemes are used to calculate the magnetic field and the electron component of the plasma. On the basis of the developed algorithm, a program code is created to study the mechanisms of the self-consistent magnetic field structure formation.
Visualization of gas dynamics discontinuities in supersonic flows using digital image processing methods
Authors: Булат П.В. , Волков К.Н.
Published: August 2021

Рассматриваются подходы к выделению особенностей газодинамических полей, полученных при помощи методов сквозного счета. Для определения положения и типа разрыва из численного решения привлекаются идеи и методы цифровой обработки изображений, в частности методы выделения контуров объектов, основанные на разрывах яркости изображения. Для классификации газодинамических разрывов (нормальные ударные волны, косые ударные волны, тангенциальные разрывы, контактные разрывы) используются условия динамической совместности. Разработанный подход применим к результатам расчетов, полученных любым методом сквозного счета, облегчая и ускоряя обработку результатов численного моделирования, а также повышая объективность интерпретации полученных результатов. Приводятся примеры визуализации газодинамических разрывов, возникающих при дифракции и рефракции ударных волн.

A number of approaches to the detection of features of gas dynamics fields obtained with shockcapturing methods are considered. In order to determine the location and type of gas dynamic discontinuities from the numerical solution, the ideas and methods of digital image processing are applied, in particular, the methods of detection of image contours based on the brightness of the image. Conditions of dynamic compatibility are used to classify gas the dynamic discontinuities, such as the normal shock waves, the oblique shock waves, the tangential discontinuities, the contact discontinuities, and the compression waves. The developed approach is not dependent on a specific type of the problem to be solved and is applicable to the calculations obtained with any shockcapturing method, facilitating and speeding up the processing of simulation results and increasing the objectivity of the interpretation of the results. Some examples of visualization of gas dynamic discontinuities arising in the diffraction and refraction of shock waves are given.
A modification of the CABARET scheme for resolving the sound points in gas flows
Authors: Данилин А.В. , Соловьев А.В.
Published: August 2021

Представлен явный численный алгоритм для разрешения звуковых точек в рамках схемы Кабаре. Звуковые точки характеризуются сменой знака хотя бы одной из характеристических скоростей. Потоки в узлах расчетной сетки, которым соответствуют звуковые точки, вычисляются путем решения задачи Римана о распаде разрыва. Подход успешно испытан на задачах со сверхзвуковым переходом на волне разрежения с разбеганием двух сверхзвуковых потоков и со сверхзвуковым обтеканием прямой ступеньки.

An explicit numerical algorithm for resolving the sound points in the framework of the CABARET scheme is proposed. The sound points are characterized by a sign change in at least one of characteristic velocities. The flows in mesh nodes corresponding to sound points are calculated by solving the Riemann problem. This approach is successfully tested on a problem with sound transitions on rarefaction waves, on a problem with two diverging supersonic flows, and on a problem with supersonic flow over a forward facing step.
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.
Integrated human/SARS-CoV-2 metabolic models present novel treatment strategies against COVID-19
Authors: Bannerman Bridget P , Júlvez Jorge , Oarga Alexandru , Blundell Tom L , Moreno Pablo , Floto R Andres
Published: August 2021

The coronavirus disease 2019 (COVID-19) pandemic caused by the new coronavirus (SARS-CoV-2) is currently responsible for more than 3 million deaths in 219 countries across the world and with more than 140 million cases. The absence of FDA-approved drugs against SARS-CoV-2 has highlighted an urgent need to design new drugs. We developed an integrated model of the human cell and SARS-CoV-2 to provide insight into the virus’ pathogenic mechanism and support current therapeutic strategies. We show the biochemical reactions required for the growth and general maintenance of the human cell, first, in its healthy state. We then demonstrate how the entry of SARS-CoV-2 into the human cell causes biochemical and structural changes, leading to a change of cell functions or cell death. A new computational method that predicts 20 unique reactions as drug targets from our models and provides a platform for future studies on viral entry inhibition, immune regulation, and drug optimisation strategies. The model is available in BioModels (https://www.ebi.ac.uk/biomodels/MODEL2007210001) and the software tool, findCPcli, that implements the computational method is available at https://github.com/findCP/findCPcli.
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.
As dimensões do ensino e da aprendizagem nos processos avaliativos do Ensino Superior
Authors: Tramontina Carla Cristine
Published: August 2021

Pensar a avaliação no Ensino Superior é fundamental para o desenvolvimento de uma prática pedagógica crítica e reflexiva. Nessa perspectiva, fica o desafio aos educadores e gestores que atuam no Ensino Superior de pensarem e implantarem processos avaliativos que contribuam para a autoformação dos sujeitos, possibilitando que esses sejam capazes de analisar, interpretar, relacionar, compreender e refletir sobre o seu próprio processo formativo. Além disso, cabe ao educador diversificar os instrumentos avaliativos de suas práticas, construindo processos de forma contínua durante o percurso formativo dos acadêmicos e com o intuito de perceber os conhecimentos por eles internalizados e, também, como uma forma de autoavaliar o seu próprio trabalho.
Currículo e Avaliação da Aprendizagem: Políticas e Práticas na sua relação com a Melhoria (apresentação)
Authors: Leite Carlinda , Fernandes Preciosa , Marinho Paulo
Published: August 2021

Políticas de educação e de avaliação das aprendizagens têm seguido distintos sentidos embora, de um modo geral, todas justificadas para promoverem melhorias, face ao reconhecimento da complexidade que atravessa a sociedade em geral e os sistemas educativos, em particular.
Avaliações externas e aprendizagens dos alunos: uma reflexão crítica
Authors: Fernandes Domingos
Published: August 2021

O propósito deste texto era produzir uma reflexão crítica acerca das avaliações externas e das suas relações com as avaliações internas e com as aprendizagens dos alunos. Discutiram-se efeitos positivos e negativos das avaliações externas sobre as aprendizagens e o ensino e a necessidade de aprofundar e melhorar as avaliações internas. A reflexão produzida mostrou a possibilidade de se evoluir para outra geração de avaliações externas, baseada em princípios socialmente construídos e centrados nas aprendizagens dos alunos, devidamente articulada com outras avaliações (internas e externas) e enquadrada por políticas públicas materializadas em programas que apoiem a formação dos professores.
Formação de professores e reformas curriculares: entre projeções e normatividade
Authors: Santos Geniana dos , Borges Veronica , Lopes Alice Casimiro
Published: August 2021

Neste texto, objetivamos desestabilizar a significação essencializada para a identidade do/da professor/a, bem como questionar a responsabilização/culpabilização docente pelos resultados da escolarização nas políticas para a formação de professores. Recorremos à teoria do discurso (TD), de Laclau & Mouffe, e à perspectiva discursiva das políticas curriculares, desenvolvida por Lopes & Macedo no Brasil. Defendemos que os projetos de futuro para a formação de professores, em um cenário delineado pela crise educacional e pelo risco à democracia, vêm produzindo sentidos horríficos e beatíficos no âmbito das políticas educacionais. As matrizes de substituição da ordem e do reconhecimento, ou seja, na ordem da economia, quer seja da família, da escola, da justiça, precipitam, na radical contingência, que a decisão seja assumida pelos sujeitos menos pelo rationale que possa comportar e mais pela radical indecidibilidade constitutiva da responsabilidade marcada pela ausência de certezas e pela urgência da decisão/autoria.
A retomada da Educação Profissional - O caso da Formulação do Pronatec
Authors: Bispo Fabiana Carvalho da Silva
Published: August 2021

A retomada da Política de Educação Profissional ocorreu em um contexto de recuperação do crescimento econômico do país onde se demandavam crescentes volumes de mão-de-obra especializada em contraste com um baixo nível de qualificação de parcela majoritária dos trabalhadores brasileiros. Assim, foi instituído, a partir da Lei n. 12.513 de 26 de outubro de 2011, o Programa de Acesso ao Ensino Técnico e Emprego, o Pronatec, com o objetivo democratizar a oferta de cursos de educação profissional e tecnológica a partir de um conjunto de ações aumentando a produtividade e a competitividade do país, com inclusão social. O artigo se propõe assim a fazer uma reflexão sobre o processo de formulação do programa e sobre as mudanças que vêm ocorrendo na política educacional do país quanto à educação profissional.
Paradigm lost
Authors: Eley Elizabeth , Berryman Mere
Published: August 2021

The term paradigm lost (with apologies to Milton) references the lost opportunities arising from a discrepancy in both what the New Zealand education context promises and what is implemented in many schools. Honouring the Treaty of Waitangi inherently promises an education system that draws on the worldviews of both Māori and Pākehā. We argue that the schooling model, adopted in 1877 and substantively unchallenged since, does not reflect the views of the uniqueness of every child as contained in the heritages of both Treaty signatory partners. More concerning is that the accompanying assimilatory practices within schooling have perpetuated their disastrous impact on Māori. This article explores the impacts of the ‘lost paradigm’ on students’ sense of self and therefore on their sense of belonging at school. The potential and hope for paradigm regained is also presented, drawing from the responses of educators who have participated in a professional learning and development course, where participants engage in a process of conscientisation, resistance and transformative praxis, that changes both their personal educational practice and that of their school. Through this course, participants experience what Freire (1996) refers to as ‘radical hope’ – the belief that we can make life better for others and change the paradigms that lead to oppression and despair.
The Clinical Effects of Hyperbaric Oxygen in the Treatment of Sudden Deafness
Authors: Feng Xinli , Chang Ying
Published: August 2021

Objective: To observe the clinical effect of hyperbaric oxygen in the treatment of sudden deafness. Methods: Ninety-six patients with sudden deafness diagnosed by the otolaryngology department were divided into 2 groups which comprised of 48 patients in the conventional treatment group and the other 48 patients in the hyperbaric oxygen treatment group. Both groups were treated with methylcobalamin, vitamin B1, and ginkgo biloba extract. The patients in the hyperbaric oxygen treatment group were given hyperbaric oxygen therapy of 2.0 ATA once a day. Each course of treatment lasted 10 days and after two courses of treatment, the clinical efficacies of the two groups were compared. Results: After two courses of treatment, the effect of treatment in the hyperbaric oxygen treatment group was significantly better than that of the conventional treatment group. Conclusion: Hyperbaric oxygen therapy can effectively improve the hearing level of patients with sudden deafness and the overall effective rate of treatment.
Application of Arthroscopic Technology in the Treatment of Traumatic Sports Ankle Arthritis
Authors: Dang Junfa , Sun Xiaohu , Feng Wei , Yang Jun
Published: August 2021

Objective: To analyze and explore the clinical value of arthroscopy in traumatic sports ankle arthritis. Methods: The study period was from June 2016 to June 2020. A selected sample of 25 patients with traumatic sports ankle arthritis in Qingyang People’s Hospital were treated. All patients underwent arthroscopy and the specific treatment effects were analyzed. Results: Comparing the preoperative and postoperative ankle-hindfoot scores, the distance of talus advancement, modified Mcguire’s ankle scoring system, and visual analog scale (VAS) pain scores, the postoperative results were significantly better than those of the preoperative (P < 0.05). Conclusion: Arthroscopy in traumatic sports ankle arthritis has a significant effect, with minor trauma and rapid postoperative recovery which improves various discomfort symptoms. It is worthy of promotion and application.
Application Research of Perioperative Clinical Pathway Based on Accelerated Rehabilitation Surgery Strategy in Patients with ERCP
Authors: Yang Xing
Published: August 2021

Objective: To explore the effects of perioperative clinical pathway of accelerated rehabilitation surgery strategy in patients undergoing cholangiopancreatography (ERCP). Methods: Randomly selected 40 patients undergoing ERCP from our hospital which is People’s Hospital, Jingjiang City, for research, and divided the patients into two groups. The 20 patients who were given conventional education methods were set as the reference group, and the 20 patients who were given perioperative clinical pathway care with accelerated rehabilitation surgery strategies were the research group, where the clinical nursing effect of the two groups was statistically compared. Results: According to clinical observation and statistics, the study group’s postoperative time to eat for the first time, time to get out of bed, hospitalization time, and surgical blood loss were better than those of the reference group, P<0.05; the anxiety and depression scores of the study group were lower than those after nursing in the reference group, P<0.05; the incidence of complications in the study group was lower than that in the reference group, and patient satisfaction was higher than that in the reference group, where both P<0.05. Conclusion: The application of perioperative clinical pathway care based on the strategy of accelerated rehabilitation surgery can achieve significant results in ERCP patients, which can effectively improve the surgical indicators of patients and reduce the risk of complications.
Clinical Observation of 48 Cases of Black Eye Circle Treated with Modified Yu Rong San Gel Eye Mask
Authors: He Jinmei , Li Chenglong , Liu Yunhua , Huang Ping , He Meng , Li Li , Ye Jun , Jin Juanjuan , Gao Lin
Published: August 2021

Objective: To observe the clinical effect of modified Yu Rong San gel eye mask in the treatment of dark circles. Methods: 96 cases of patients with dark circles were randomly divided into treatment group and control group. In the control group and the treatment group, the common eye mask and the modified Yu Rong San gel eye mask were applied to the black circle area respectively. After 15min, water was used to wash the face, the application of the mask for one time a day, four weeks, one course, and three courses were observed. Results: After three courses of treatment, the total effective rate of the treatment group was higher than that of the control group (P<0.05); the area of black eye circles in the treatment group was smaller than that before treatment (P<0.05); compared with the control group, the score of black eye circles was lower than that before treatment, the difference was statistically significant (P<0.05). Conclusion: Addition and reduction of Yu Rong San gel eye mask is effective in the treatment of dark circles.
Research Progress of Osteoporosis Based on the Theory of “Homology of Liver and Kidney”
Authors: Li Sen , Qu Zhenxing , Zhang Hua , Li Zhibin
Published: August 2021

Osteoporosis is a systemic chronic metabolic bone disease, mainly in the elderly and postmenopausal women. At present, most of the clinical treatment is western medicine, but the curative effect is not very significant. In the treatment of osteoporosis, traditional Chinese medicine (TCM) is mainly based on the overall concept of TCM. This article briefly analyzes osteoporosis from the theory of “liver and kidney homology,” discusses the research on osteoporosis in TCM, and hopes to provide reference for the clinical treatment and research of osteoporosis.
Research Progress of Treating Diabetic Nephropathy with Traditional Chinese Medicine
Authors: Wu Ningjing , Li Rong , Song Zongliang
Published: August 2021

By collecting and sorting out the literature and journals on the clinical use of Chinese medicine in the treatment of diabetic nephropathy in recent years, it is concluded that Chinese medicine is effective in the treatment of DKD. Chinese medicine therapy has a unique role in the treatment of diabetic nephropathy. How to correct syndrome differentiation and treatment? Improving clinical effects is the research direction that all medical staff will work together in the future.
Fundamentación epistemológica de la línea en didácticas, saberes y disciplinas: una mirada desde la educación y las prácticas pedagógicas
Authors: Gómez Hernán Darío , Santacruz Luis Fernando
Published: August 2021

La línea de Didácticas, Saberes y Disciplinas tiene como objetivo coadyuvar a la formación de docentes, otros profesionales e investigadores a diferente nivel, con capacidades para abordar problemáticas educativas y sociales relevantes en los contextos y realidades en que desarrollen su acción, promoviendo la construcción del conocimiento, a partir de propuestas de investigación novedosas, con el fin de contribuir a la consolidación de una postura teórica unificada, pero flexible en el ámbito de la enseñanza de las ciencias de la educación, las artes, los idiomas y otros saberes objeto de la acción educativa, aplicable a diversos niveles del sistema educativo.
Photosynthetic pigments content and parameters of oxidative stress in the amaranth species with increasing water deficiency
Authors: Kabashnikova L. F. , Domanskaya I. N. , Pilipovich T. S. , Pashkevich L. V. , Martysiuk H. V. , Motyleva S. M. , Gins M. S. , Tetyannikov N. V.
Published: August 2021

The dynamics of the photosynthetic pigments content and parameters of oxidative stress with an increasing water deficit in the leaves of 40-days-old plants of two amaranth species - Amaranthus paniculatus L. (cv. Rubin) and Amaranthus caudatus L. (cv. Chyrvony aksamit), grown in a pot culture, was studied. Specific features of the development of water deficiency in amaranth leaves were revealed: amaranth plants Amaranthus paniculatus L. showed a stronger development of water deficit in leaves than Amaranthus caudatus L. after 4-days soil drought, which after 8 days increased in two species to 73.7 and 55.7 %, respectively. Under moderate drought, the amount of photosynthetic pigments (chlorophyll (Chl) and carotenoids) based on dry leaf weight increased in two amaranth species, but after 8 days of soil drought, the content of Chl (a + b) was reduced by 2.0-2.1 times, and carotenoids - 1.8-1.9 times relative to the physiological level. As a result of a 4-days soil drought in the leaves of Amaranthus paniculatus L., there was a significant decrease in the content of reactive oxygen species (ROS) and the activity of lipid peroxidation (LPO), while in Amaranthus caudatus L. an increase in the levels of ROS and LPO was observed. With an increase in the pressure of the stress factor in the leaves of amaranth of the two studied species, a decrease in the ROS content and LPO activity relative to physiological values was revealed. A conclusion was made about the different mechanisms of ROS generation and the flow of LPO processes at different stages of soil drought in the leaves of different amaranth species.
Scientific approaches of a multi-level competitiveness assessment of quality assurance system for AIC products
Authors: Rastorgouev P. V.
Published: August 2021

High dependence of agri-food products competitiveness level on its qualitative parameters determines the need to orientate both the management of individual enterprises and the entire APC regulation system for formation of competitive advantages of domestic products in order to efficiently implement it in external and domestic markets. A prerequisite for reliably determine the direction of efficient solution to solve such a task is availability of a mechanism for objective assessment of the current product quality management system from the point of view of providing sustainable production of competitive product according to quality parameters. In connection with these objectives of the study were substantiation and development of practical oriented scientific approaches to assessment of competitiveness of the system for ensuring quality of agri-food products in modern conditions, taking into account the multi-levelness of the APC regulation system in the Republic of Belarus. As a result, system of principles of assessing competitiveness of system for ensuring quality of agri-food products has been developed. Targeted estimated criteria specifying the level of competitiveness of the system for ensuring quality differentially according to AIC regulation levels have been specified (republican, sectoral, individual business entities). Priority estimates of competitiveness of the quality assurance system for agri-food products have been developed, classified depending on the criteria of quality and safety assurance system, as well as the level of regulation of AIC and their area of application (national, regional and international markets). Implementation of proposals for assessing the competitiveness of the product quality assurance system at all levels of AIC management in practical activities will allow substantiating the most relevant areas for improving the existing quality management mechanisms, increase competitiveness of products in terms of quality parameters and strengthen the position of domestic manufacturers by increasing the confidence of potential and actual consumers in the supply system quality and safety of agri-food products.
Circular economics in agriculture: conceptual bases and implementation possibilities in Belarus
Authors: Batova N. N. , Tochitskaya I. E. , Sachek P. V.
Published: August 2021

Achieving sustainable economic growth has become an important point on the global agenda today. Harmonious coordination of sustainable development components, ensuring economic growth, social stability and ecological balance, can be achieved in the long term using the concept of circular economy, which, in turn, serves as a practical tool for transition to green economy. Despite the fact that implementation of circular economy is becoming global and competitive advantages of implementing this concept are becoming more obvious, in general, it has not been widely developed in Belarus yet. The paper reviews conceptual basis of circular agriculture, reveals peculiarities and principal differences from the traditional production model. Based on study of world experience, the importance of state support and scientific support for circular transformation of the industry has been substantiated. Sectoral specifics of plant production and livestock waste use is revealed. The results of agricultural producers survey regarding use of waste in various areas are presented: transfer for processing, sale, use of third-party secondary raw materials. Information, economic and technological barriers retaining circular transformation of Belarusian agriculture are revealed. Prospects of implementing principles of circular economy for large agricultural producers and small farm households have been substantiated. The issues covered in the paper are of interest when preparing projects of state social and economic development programs, sectoral programs for development of agro-industrial complex, strategies for ensuring environmentally safe production and efficient use of natural resources for the period until 2025. Practical use of the proposed results and proposals for implementation of circular economy principles in agriculture will ensure more efficient use of raw materials within production cycles and achieve sustainable development of agriculture in general.
Efficiency of liquid-phase biological preparations when cultivating carrots on peat soils
Authors: Rabinovich G. Yu. , Fomicheva N. V. , Smirnova Yu. D.
Published: August 2021

One of priority directions in cultivation of carrots is development of new techniques in technologies allowing to increase not only the yield, but also the quality of root crops. Treatment of vegetative plants with various biological products, growth regulators and hemin preparations is the most promising technological method for increasing carrots yield and quality. The purpose of the research is to study the effect of liquid-phase biological means of various natures on yield and quality of Karini variety carrots grown on peat soil. The experiment had been carried out in 2015-2016 on peat soil of the Dmitrovsky department of VNIIMZ branch FRC V.V. Dokuchaev Soil Science Institute (Moscow region). Two microbiological preparations (LPB and Azotovit) and two humic (BoHum and FlorHumat) were tested. Azotovit and FlorHumat are known registered preparations, and LPB and BoHum are the latest developments of VNIIMZ. The biological means were applied three times during growing season against the background of the main fertilizer P40K60. The largest increase in carrot yield was obtained when using LPB and BoHum - 19.4 and 18.3 %. Humic preparations contributed to a higher level of mineralization processes in soil, providing plants with available nutrients. Improvement in quality indicators of carrots for all tested biological means was noted: a higher content of carotene in root crops in the variant with BoHum - 101 mg/kg, dry matter - when using Azotovit - 9.35 %, the minimum content of nitrates when using FlorHumat preparation - 101 mg/kg. In general, the impact mechanism of the biological means used was their complex effect on plants and soil, which is of certain value for fundamental research. The method of cluster analysis showed a high degree of similarity in efficiency of bio-means LPB and BoHum in terms of set of indicators (yield, quality of carrots, agro-chemical and microbiological indicators of soil). The most promising is the humic biological mean BoHum. The considered biological means used for cultivation of carrots on peat soils will improve provision of processing industry with a raw material base, and population with high-quality vegetable products.
Model genetic profiles of pigs of mother breeds on genes - productivity markers
Authors: Vasilyuk O. Ya. , Sheiko I. P. , Gridyushko I. F.
Published: August 2021

Currently, development of molecular genetics and biology allows for genomic analysis and selection directly at the DNA level (marker-dependent selection). The aim of the research was to develop model genetic profiles for marker genes of quantitative traits of productivity of pigs of planned maternal breeds used in pig breeding. Such breeds in the Republic of Belarus are as follows: Belarusian large white, Belarusian black and white and Yorkshire. The studies were carried out at the agricultural branch of Zadneprovsky SGC, Orshansky Plant of Bread Products, JSC, Zarechye SGC, Zapadny SGC with populations of purebred animals of Belarusian Large White, Belarusian Black and White and Belarusian plant type of Yorkshire pigs during 2002-2018. Genetic testing was carried out with sows, boars and finishing pigs of maternal breeds. As a starting material, tissue samples from the auricle of pigs were used with DNA isolated and optimized for the analysis of gene polymorphism using PCR - RFLP method in the laboratories of molecular biotechnology and DNA testing (Research and Practical Center of the National Academy of Sciences of Belarus for Animal Breeding) and animal genetics (Institute of Genetics and Cytology of the National Academy of Sciences of Belarus). As a result of studies based on the established polymorphism, model genetic profiles of maternal breeds of pigs were developed for marker genes of quantitative traits of productivity. The maximum achieved level of the preferred genotype for each marker gene among the three maternal breeds served as a model profile for the evaluated breeds (breeding young animals). For breeds with an established high level of marker gene polymorphism and productivity, a model profile has been developed that exceeds the achieved indicator by 8-10 p.p.