bluuebunny/crossref_metadata_2025 huggingface dataset:
Amelioration on oxidative stress, testosterone, and cortisol levels after administration of Vitamins C and E in albino rats with chronic variable stress
Authors: Hidayatik Nanik , Purnomo Agus , Fikri Faisal , Purnama Muhammad Thohawi Elziyad
Published: January 2021

Background and Aim: Stress can cause physiological and biological disorders in the body. On the other hand, antioxidants from vitamins and minerals are effective for stress treatment. Therefore, this study aimed to evaluate the effect of the administration of Vitamins C and E on serum superoxide dismutase (SOD), malondialdehyde (MDA), catalase (CAT), glutathione peroxidase (GPx), testosterone, and cortisol activity in albino rats with chronic variable stress (CVS). Materials and Methods: Twenty albino rats were randomly assigned into four treatment groups: C was administered normal saline; T1 was administered Vitamins C and E; T2 was only induced CVS; and T3 was induced CVS followed by Vitamins C and E administration. All treatments were applied for 4 weeks, respectively. Furthermore, 5 mL of blood samples were collected intracardially. Body weight data were collected for the initial and final weights. From serum samples, SOD, GPx, and CAT were measured using the enzymol method; MDA was measured using the high-performance liquid chromatography method; and testosterone and cortisol were measured using the enzyme-linked immunosorbent assay method. All variables were analyzed statistically using analysis of variance followed by the Duncan test (p<0.05). Results: Our findings showed that the T1 and T3 groups significantly decreased (p<0.001) compared to T2 in the following parameters: SOD, MDA, GPx, and cortisol. Meanwhile, CAT and testosterone levels in the T1 and T3 groups were significantly increased (p<0.001) compared to the T2 group. In addition, the weight gain in T1 and T3 groups was significantly increased (p<0.001) compared to T2 group. Conclusion: It can be concluded that the administration of Vitamins C and E had a significant effect to alleviate SOD, MDA, GPx, and cortisol and to improve the testosterone level in albino rats with CVS.
FINANCIAL REGULATION INSTRUMENTS FOR THE SOCIO-ECONOMIC DEVELOPMENT OF THE PROBLEM REGION
Authors: Balakina G. F. , Koloskova N. V.
Published: January 2021

The article discusses ways to improve the management of socio-economic development of problem regions of various types: depressed, mountainous, border.The system of specific financial instruments and institutions of targeted state support in problematic regions has been substantiated: a special preferential regime for intergovernmental relations, the formation of interregional programs in specific areas of development, the creation of priority development areas, the implementation of a special type of state programs for the regions that are most behind in socio-economic development from the average Russian parameters, such as individual regional programs. The classificationof the instruments of financial regulation of regional development is substantiated: budgetary, tax-credit and organizational-political. A set of instruments for financial regulation of the development of problem regions is defined. The most effective, according to the authors, are: the development of special programs providing for budgetary, tax-credit and organizational-political means and methods of regulation. It is concluded that it is advisable to expand the list of instruments for financial regulation of regional development, taking into account the specifics of socio-economic processes in problem regions.
GRADUATE EMPLOYMENT OF HIGHER EDUCATIONAL INSTITUTION: ANALYTICAL REVIEW OF STATISTICAL DATA AND RESEARCH MATERIALS
Authors: Bulatova G.A.
Published: January 2021

The article is devoted to the study of the state and problems of employment of graduates. The author conducted a review and comparative analysis of statistical data and materials of selective studies on this issue. Unfavorable trends in the employment of young specialists have been identified, the main of which are rising unemployment, job performance that does not match the level and profile of professional training. The main reasons for this phenomenon are identified: labor market variability, inefficient career guidance system, lack of effective interaction and coordination of needs for specialists between educational institutions and employers, deformations in wage levels. As recommendations, it was proposed to develop a system for monitoring and forecasting the employment of graduates, to improve mechanisms for matching the needs of the economy in personnel with the scope and areas of professional training at universities, and to expand student participation in continuing education programs.
GOVERNMENT INCENTIVES OF AGRO-INDUSTRIAL REGIONS IN TIMES OF ECONOMIC RECESION
Authors: Kolyada N. I. , Trotzkovsky A. Ya.
Published: January 2021

This article deals with theoretical and practical aspects of formulation and implementation of fiscal policy, income and expenses in particular. It also provides a brief analysis uncompensated receipts, regional budget expenditures on national economy, profit tax rise in revenue to regional budgets during the period of undeclared crisis in 2015 and the following period of economic recovery in 2016-2017. The position of the Altai Territory in the research group has been determined. The impact of federal and regional budgets on the dynamics of territories’ revenue trends from profit tax has been studied. Efficiency gains of budget management have been noted. Such indicators as the amount of profit tax revenue counting on per ruble of costs on national economy from a regional budget, the amount of the following year profit tax counting on per ruble of national economy costs from the previous year regional budget (in 2016-2017 in kopecks) were defined as criteria for evaluating the effectiveness. It has been shown, that taking into account the time lag of one year, budget investments into national economy, excluding direct federal transfers are insufficient in 9 out of 10 cases and their efficiency will grow only with the increase of these expenditures. The assertion about the importance of budget investments for economic development of the country and its regions has been confirmed, that underlines the necessity of greater use of public-private partnership system.
FORECASTING THE RISK OF LOSS OF FINANCIAL STABILITY BY MUNICIPALITIES USING QUANTITATIVE ANALYSIS METHODS
Authors: Polygalov G. V. , Mishchenko O. A.
Published: January 2021

The article is devoted to the study of the possibility of forecasting and assessing the risk of loss of financial stability of municipalities. The article describes the importance and necessity of using modern and high-quality forecasting models to determine the risk of loss of financial stability of a municipality in the conditions of dynamic development of the economy of municipalities. The risks of reducing the degree of financial stability are highlighted and the mechanism of money circulation is considered in the same context. The influence of the factor of attracting labor resources to the territory of the municipality as the only way out of positioning financial instability is revealed. A methodological approach to the formation of mathematical models, both in the form of discriminate and regression equations, is structured. Calculations for determining the risk of loss of financial stability of municipalities based on discriminant, regression and neural network analysis are presented. The structure of the generated neural network is demonstrated. The priority of such studies and their importance for the future as a basis for modeling strategies for the development of the territory is justified.
WAYS TO MINIMIZE THE ORGANIZATION'S FINANCIAL RISKS
Authors: Semina L. A.
Published: January 2021

The specificity of the article is an attempt to establish the General principles of building a financial risk management system in an organization aimed at minimizing them. Market instability, inaccuracy and incompleteness of information about the conditions associated with the conduct of business and the implementation of planned decisions, leads to certain losses for the organization, and in some cases, to additional benefits. The impact of financial risks on the economic activities of modern organizations is multifaceted and can not only reduce revenue and profit indicators, but also lead to bankruptcy of the organization, weaken economic security. Based on the foregoing, we can confidently say that management and employees of the modern organizations face the task of timely identification of financial risks and minimization of their impact on the level of economic security organization, which, in turn, is expressed in this condition organization, which can be achieved fairly stable and high growth of its economic indicators, but also guarantee complete protection from external and internal threats that undermine the welfare and further development of the organization. In other words, economic security is aimed at ensuring the most efficient allocation of resources and creating stable conditions for the operation of production and profit.
DIVERSIFICATION OF PRODUCTION AT THE ENTERPRISE OF THE MILITARY-INDUSTRIAL COMPLEX
Authors: Tsomaeva I. V. , Bazhanov V. A. , Kiseleva A. A.
Published: January 2021

As you know, the diversification of production in the military-industrial complex is called one of the key strategic national tasks, the solution of which directly affects both the development of the complex and the entire economy of Russia and, most importantly, ensuring the country’s defense and security in the long term. The article examines the current problems of diversification of production using the example of a specific defense enterprise in the Altai Territory. In order to implement it and increase efficiency, it is proposed to use an approach based on the well-known concept of strategic economic zones and strategic business units. It is shown how their allocation at the enterprise allows to reduce strategic vulnerability, increase the level of profitability, competitiveness of civilian high-tech products, and reduce the impact of risks. The possibilities of using this concept to solve the problems of diversification of production of a defense enterprise are shown. It is argued that the application of the proposed method of diversification will allow the defense enterprise to control the types of activities and the product range, motivates the maximum possible expansion of this and that through innovation both in the types of activities and in the product range, and the cessation of production of those which do not fit into the development prospects of the enterprise.
Estratégias, modelos e plataformas on-line de armazenamento para arquivos audiovisuais
Authors: Cajazeira Paulo Eduardo Silva Lins , Souza José Jullian Gomes
Published: January 2021

Pretende-se apresentar as estratégias de armazenamento e salvaguarda os arquivos audiovisuais, a partir de modelos e plataformas online utilizados por instituições brasileiras. Como forma de propiciar a visualização dos formatos que podem ser apropriados por outras instituições, que possuem arquivos audiovisuais em seu acervo. Dessa forma, tem como objetivos secundários: a) explicitar os ambientes digitais de informação enquanto novos lugares de memória, sobretudo para o audiovisual e b) identificar as características próprias de cada modelo e plataforma digitais. O quadro metodológico perpassa uma abordagem qualitativa com estratégia de estudo exploratório, visualizando as plataformas utilizadas por diferentes instituições. Conclui-se que os ambientes digitais possuem diferentes recursos e plataformas, que podem ser utilizados para a preservação e potencialização do acesso e uso online do arquivo audiovisual.
Recuperação de informação em dispositivos móveis
Authors: Souza Rodrigo Ananias da Silva , Rodas Cecílio Merlotti
Published: January 2021

A Recuperação de Informação realizada por intermédio de dispositivos como o desktop e o notebook trouxe um grande avanço tecnológico para diversas áreas, assim como para a Ciência da Informação. Adaptar as estratégias da recuperação em telas de dispositivos móveis se torna necessário de acordo com as mudanças das necessidades informacionais dos usuários. Assim, esse trabalho procura mostrar a necessidade de pesquisas referentes à Recuperação da Informação em dispositivos móveis e ainda abordar a utilização de ferramentas tecnológicas, como o Eye Tracking, que possibilitam medir a usabilidade de ambientes informacionais digitais, assim como o comportamento do usuário buscando o aprimoramento de sua experiência diante das interfaces. Para o desenvolvimento deste trabalho foi realizada uma revisão bibliográfica, tendo como critérios de busca trabalhos publicados sobre o tema da Recuperação da Informação em dispositivos móveis e técnicas para realizar a mensura de usabilidade e recuperação da informação nos últimos cinco anos. O considerável aumento das necessidades informacionais e das buscas realizadas por intermédio de dispositivos móveis justifica a importância deste tema de pesquisa na Ciência da Informação. Além disso, considerando-se a pequena quantidade de trabalhos recuperados na base de dados da Brapci sobre objeto de estudo deste trabalho, acredita-se que novos estudos possam contribuir na perspectiva do acesso à informação por meio de dispositivos móveis.
Implementação de aspectos de acessibilidade em biblioteca digital desenvolvida com o Dspace
Authors: Schiessl Ingrid Torres , Ângelo Silveira Lucas , Fernandez Gomes Rafael , Shintaku Milton
Published: January 2021

O DSpace tem se tornado a principal tecnologia para a criação de bibliotecas digitais de governo. Entretanto, o DSpace não implementa, de forma padrão, aspectos de acessibilidade requeridas por lei em sítios governamentais. Assim, o presente trabalho tem como objetivo descrever sobre a implementação de aspectos de acessibilidade em biblioteca digital de governo segundo orientações do Modelo de Acessibilidade em Governo Eletrônico (eMAG), por meio de estudo que alia aspectos qualitativos com metodologia relacionada a informática. Os resultados revelaram que parte das tarefas de implementar aspectos de acessibilidade são alheias ao DSpace, visto que precisam dar acessibilidade a imagens utilizadas na configuração da biblioteca digital, por exemplo. Assim, é preciso acrescentar aspectos de acessibilidade também às políticas da biblioteca digital.
Homophobie und antiwestliche Diskurse
Authors: Navratil Nicole
Published: January 2021

Nicole Navratil wirft in ihrem Beitrag einen zeitgeschichtlichen Blick auf die Situation der LGBTIQ-Community in Serbien vor dem Hintergrund der Identitätskonstruktion des noch jungen Staates in Richtung EU-Annäherung oder Orientierung an autoritären Systemen wie Russland. Die EU wirkt durch den Annäherungsprozess als externe Demokratieförderin, hat jedoch aufgrund ihres Ansatzes und Maßnahmenkatalogs große Schwierigkeiten, echte Reformen im Land einzuleiten. Instrumentalisierung und spezifische Rhetorik der serbisch-orthodoxen Kirche und nationalistischer Teile der Politik verstärken antiwestliche Einstellungen in der Bevölkerung und verhindern den demokratischen Wandel. Die Diskurse, in welche Richtung sich Serbien entwickeln solle, entzünden sich auch und besonders an der Frage der Rechte für LGBTIQ-Personen, da Geschlechtsentwürfe für eine Gesellschaft konstitutiv und identitätsbildend sind.
Bilder des Fremden
Authors: Czycholl Claudia Valeska
Published: January 2021

Erstmals werden mit diesem Buch visuelle Darstellungen von Migrant*innen im Kontext der Arbeitsmigration in der Bundesrepublik Deutschland anhand von Presse- und Privatfotografien untersucht. Für den Zeitraum von 1960 bis 1982 analysiert Claudia Valeska Czycholl in Spiegel und Stern kursierende Fremdbilder von Migrant*innen. Sie zeichnet diskursive Verläufe nach, fokussiert zentrale Stadien und Themen und identifiziert dominante Repräsentationsmuster. Zudem hinterfragt sie mittels fotografischer Selbstkonstruktionen von Migrant*innen diese hegemonialen Darstellungsweisen und hierarchisierenden Erzählungen von ›Uns‹ und ›Ihnen‹, von ›Wir‹ und den ›Anderen‹. Die Studie gibt so Einblick in tradierte Differenzkonstruktionen und stereotype Vorstellungen und liefert Materialien sowie theoretisch-methodische Ansätze, um sie zu hinterfragen.
Motywy działalności charytatywnej w Kościele starożytnym
Authors: Müller Andreas , Kalbarczyk Adam
Published: January 2021

Niniejszy artykuł przedstawia w sposób systematyczny uzasadnienie dobroczynności, jakie dawało wielu ojców Kościoła – począwszy od Cypriana z Kartaginy – w swoich mowach i pismach na temat jałmużny i uczynków miłosierdzia. Kościół starożytny posługiwał się licznymi tekstami biblijnymi dla uzasadnienia dobroczynności. W wielu z nich znajdziemy bezpośrednie wezwania do indywidualnego zaangażowania charytatywnego. Taka motywacja czyni jednak z diakonii formę sprawiedliwości z uczynków, która jest nie do przyjęcia dla protestantów. Niemniej w nauczaniu ojców Kościoła znaleźć można również takie linie argumentacji, które zwrócone są przede wszystkim w stronę adresata dobroczynności, oparte na chrześcijańskiej antropologii. Obok takiej argumentacji spotkać można także uzasadnienia związane z diakonią instytucjonalną, w ramach której do działalności charytatywnej mogła pobudzać presja międzyreligijnej konkurencji, a także chęć zdobycia prestiżu u dostojników kościelnych i wywierania osobistego wpływu na życie Kościoła i społeczeństwa.
Funkcja spowiednika i realizacja sakramentalnej posługi wobec duchowych potrzeb ludzi młodych
Authors: Dolata Bartłomiej
Published: January 2021

Sakrament pokuty i pojednania to wielki dar dla Kościoła. W nim człowiek otrzymuje pojednanie z Bogiem i z Kościołem, w nim doznaje oczyszczenia i formuje swoją osobowość chrześcijanina, doskonaląc rozwój swoich nadprzyrodzonych cnót i życia duchowego. Pomocą dla niego na tej drodze jest spowiednik. W duchu swojego powołania pełni on posługę Dobrego Pasterza na wzór Chrystusa, o czym uczy nas Katechizm Kościoła katolickiego (KKK 1465). Zadaniem, jakie spoczywa na spowiedniku, jest troska o lud mu powierzony i postawa sługi, który pochyla się nad nędzą drugiego człowieka. Posługa miłosierdzia, jaką podejmuje spowiednik, zawsze powinna mieć na celu dobro bliźniego. Dlatego wszystkie wskazówki udzielane penitentowi powinny być tak dostosowane, aby w jak największym stopniu odpowiadały jego wiekowi i stanowi. W niniejszym artykule omówiono obowiązki i kompetencje kapłana, a także wymagania co do sakramentu pokuty. Następnie ukazano znaczenie tychże kompetencji w realizacji posługi sakramentalnej pośród ludzi młodych z uwzględnieniem ich oczekiwań i problemów.
Ana Isabel Boullon (ed.): Antroponimia e lexicografía. Santiago de Compostela: Consello da Cultura Galega, 333 pp.
Authors: Rodríguez Toro José Javier
Published: January 2021

Reseña del citado libro
O crepúsculo da função pública: distopia ou realidade?
Authors: Venco Selma , Sousa Flávio
Published: January 2021

O artigo visa debater as alterações nas formas de contratação no setor público, tomando como objeto de análise os professores da educação básica (exceto Educação de Jovens e Adultos e Educação profissional) nas escolas sob a responsabilidade dos estados da Federação e Distrito Federal. A pesquisa, de caráter documental, analisa a função pública composta por trabalhadoras voltados ao interesse geral da população, os quais são responsáveis por concretizar os direitos à população. A despeito de tal importância, observa-se: forte adesão ao gerencialismo por parte dos governos estaduais, aqui constatada pela crescente admissão de docentes sem concurso público e, portanto, fonte de precariedade nas relações de trabalho e gerador de um processo de precarização das condições de vida.
A historicidade do Ensino Superior desde a génese até à actualidade: Suas transformações e impacto no sistema educativo angolano
Authors: Correia Filho João Manuel , Roa Aleaga Taimara
Published: January 2021

O aperfeiçoamento do Ensino Superior é um processo contínuo que desde sua génese até os dias atuais, mostrou mudanças substanciais em torno das suas transformações. Deste modo o estudo tem por finalidade comparar as diferentes etapas de desenvolvimento do Ensino Superior em Angola, tendo em conta sua historicidade desde génese até à atualidade, incidindo sobre as suas transformações e impacto no sistema educativo. O artigo é de natureza comparativa, compreensiva e descritiva a partir do estudo bibliográfico e documental. Contudo, considera-se que, é impossível alcançar o desenvolvimento social, sem levar em consideração as Instituições do Ensino Superior, que são fundamentais na preparação, formação e no desenvolvimento do homem.
Estructura, diversidad e ideología en el currículum oficial de la educación musical primaria: una revisión sistemática
Authors: Marín-Liébana Pablo , Blasco Magraner José Salvador , Botella Nicolás Ana María
Published: January 2021

Durante los últimos años, ha cobrado relevancia el análisis crítico de los contenidos musicales que se imparten en los centros de educación formal, señalando la necesidad de que estos sean representativos de la diversidad cultural y ofrezcan herramientas a los estudiantes para comprender su propia contemporaneidad. Con el objetivo de profundizar en su estudio, se ha realizado una revisión sistemática del currículum escrito en la educación musical primaria mediante el análisis de 49 artículos científicos de ámbito internacional. Los temas más recurrentes giran en torno a la estructura del currículum, la diversidad que refleja y la ideología que pretende transmitir. Los resultados señalan una progresiva estandarización, una función de legitimación del orden político, y el retroceso de la hegemonía de la música académica occidental.
Can we repeat what we do not say in L2?
Authors: Ramonaitė Jogilė Teresa
Published: January 2021

The paper analyzes the results of a sentence repetition task performed by Lithuanian L2 speakers of different language proficiency levels. This paper focuses on a set of targeted verb forms included in the task because they are less likely to occur in free production. The different forms the speakers produced are analyzed by considering their correspondence (or not) to the targeted form, by comparing the speakers among each other with respect to their learner variety and by comparing the task results to the repertoire of the same speaker in the free production data. In multiple cases of failed re-production, the analysis examines what the targeted forms were substituted with and tries to identify possible reasons for such substitution. This analysis confirms the general inability of the basic variety speakers to distinguish between morphologically different forms and the dominant trend showing that L2 learners are more meaning-focused than form-focused. The analysis also shows growing implicit knowledge, or at least gradual passive acquisition, of the less frequent forms as the speaker advances in the post-basic continuum.
Politikos autonomija kaip moralinis projektas. H. Arendt, M. Oakeshotto ir C. Schmitto koncepcijų analizė
Authors:   , Čelutka Simas
Published: January 2021

Disertacijoje nagrinėjama politikos ir moralės santykio problema. Teigiama, kad Hannah Arendt, Michaelas Oakeshottas ir Carlas Schmittas suformulavo tokias politikos autonomijos sampratas, kurios pasiūlo naują – ontologinį – politikos ir moralės santykio interpretavimo būdą. Jis yra filosofiškai pranašesnis už Vakaruose dominuojantį teorinį arba racionalistinį politikos ir moralės santykio supratimo modelį, kuris pradeda nuo abstrakčių moralinių normų nustatymo ir politiką padaro priklausomą nuo jų (ne)įgyvendinimo. Taip skiepijamas instrumentinis, reduktyvus požiūris į politiką, nepripažįstantis jai jokios savaiminės vertės. Ontologinė prieiga už teorinę yra pranašesnė dėl dviejų priežasčių. Pirma, pradėdama ne nuo abstrakčių normų, o nuo fundamentalių politinio patyrimo struktūrų ir politinio veiksmo sąlygų analizės, ji išlaiko pagarbą politikos kaip savarankiškos žmogaus veiklos srities autonomijai ir savitumui. Antra, ji atveria vidinį, o ne išorinį politikos ir moralės sąryšį. Ontologinis tyrimas padeda suprasti, kad veikdami politiškai, piliečiai negali nekultivuoti tam tikrų politiniam veikimui būtinų moralinių nuostatų ir dorybių. Arendt, Oakeshotto ir Schmitto tekstų analizė leidžia įsitikinti, kad politikos autonomijos pripažinimas nepažeidžia tampraus politikos ir moralės ryšio.
Risk-oriented concept in philosophy of technique
Authors:   Institute of Geotechnical Mechanics named by N. Poljakov of National Academy of Sciences of Ukraine, Bulat A.F. , Bunko T.V. ,   Institute of Geotechnical Mechanics named by N. Poljakov of National Academy of Sciences of Ukraine, Kokoulin I.Ye. ,   Institute of Geotechnical Mechanics named by N. Poljakov of National Academy of Sciences of Ukraine, Myroshnychenko V.V. ,   DTEK LTD ENERGO
Published: January 2021

In the article, the issues of terminology of technique philosophy related to the notions of a concept, a risk and an uncertainty are considered. It is noted that a concept in terms of philosophy is considered as a category of human thinking, of how a man being a subject perceives the environment: objects, processes, actions of other people. From philosophical point of view, a concept is characterized by four levels; "consciousness - authorial concept - concept of interpreter - collective consciousness". Definition of the levels can differ, but their sense remains unchanging. A concept is considerably wider than a notion and is syncretic by its content. Basic criterion, by which it is possible to distinguish between "a concept" and "a notion", is simple enough: if we can give a clear (of course, subjective) definition, then it is a notion, if we cannot – it is a concept. A concept becomes a notion when a subject has set it forth (authorial concept), listeners (readers) have interpreted it (interpreter concept), discussed and created a collective concept – after this the concept is formalized as notions. Good example of such chain of a concept transforming into totality of publicly-meaningful, clear and suitable for the practical use results is defending of a scientific dissertation. A risk is considered in philosophical understanding: it is impossible to formulate any universal definition for it as a risk is always subjective and inherent to a concrete participant of some technological or public process in concrete field. A risk should not be mixed up with an uncertainty, as a risk is a method for overcoming an uncertainty. A risk is a function of an uncertainty which does not have clear definition and can be estimated only partially. A risk relates to a subjective uncertainty only: an objective uncertainty should be only taken into account and cannot be an object of control as it cannot be diminished by way of experiments or analysis of statistics. A risk in philosophical understanding can be only a basis for further concretization by engineering sciences: there and only there it is possible to try (and it has been already partially realized) to work out methods for assessing a risk and use the obtained results for improving reliability of production and minimizing the accident rate.
Simulation of dynamic phenomena in the ventilation network due to sudden gas outburst
Authors:   Institute of Geotechnical Mechanics named by N. Poljakov of National Academy of Sciences of Ukraine, Bulat A.F. , Bunko T.V. ,   Institute of Geotechnical Mechanics named by N. Poljakov of National Academy of Sciences of Ukraine, Kokoulin I.Ye. ,   Institute of Geotechnical Mechanics named by N. Poljakov of National Academy of Sciences of Ukraine, Yashchenko I.О. ,   Ministry of Power Engineering of Ukraine, Ponomarenko V.V. ,   Ministry of Power Engineering of Ukraine
Published: January 2021

An increase in the pace of cleaning and preparatory work, a transition to deeper horizons, a high concentration of machines and mechanisms in places where minerals are excavated and transported increase the likelihood of one of the most difficult and dangerous types of underground accidents - sudden outbursts of coal, rock and gas. In the event of a sudden outburst, the air distribution existing in the ventilation network experiences a sharp dynamic effect, leading to a violation of the stability of the ventilation of the workings close to the center of the outburst and the overturning of the air flow in them. The methane released in this case forms an atmosphere dangerous for humans in the adjacent workings. The size of the gas contamination zone depends on many factors: the intensity of the outburst, the ventilation scheme of the mine, the presence of ventilation facilities, their number, and others, and can become the object of special studies, including the study of the outburst process itself and its interaction with the ventilation network. The specificity of the occurrence of an oytburst as a type of accidents does not allow obtaining statistical and experimental results directly during its course, which greatly complicates the study of this process. In this regard, the most acceptable research method that allows assessing the results of the interaction of the outburst with the ventilation network and, guided by them, to develop effective measures to eliminate its consequences and restore the normal functioning of the mine, is the simulation method using a PC. The article analyzes the stages of changes in the mining-geological and mining-technical conditions preceding the occurrence of the outburst, the stage of the outburst, the calculation formulas are given, by which it is possible to evaluate the configuration and dynamics of the development of the zone polluted with methane as a result of the outburst. The results of modeling the gas-dynamic manifestations of the outburst and its effect on the state of mine ventilation are of great importance in ventilation calculations in emergency modes in order to use the possibilities of ventilation effects on an emergency, limit emergency zones and increase the effectiveness of eliminating the consequences of an accident.
Research and development of schemes of the discrete step of reinforcement in the shaft with rope profile conductors
Authors:   Institute of Geotechnical Mechanics named by N. Poljakov of National Academy of Sciences of Ukraine, Voloshin A.I. , Rubel A.A. ,   SE «Ukruglerekstrukturizatsiya» OK, Boyko B.I. ,   SE "Novovolynsky Repair and Mechanical Plant", Rubel V.A. ,   LLC "Record-A", Kuraeva O.V. ,   LLC "Pfizer Ukraine"
Published: January 2021

In order to ensure the cage directed motion, vertical shafts are reinforced with the shaft equipment of various designs: rigid, flexible, with no buntons, rope-profile. In this research, different existing design schemes of the shaft equipment, their advantages and disadvantages, design solutions with the rope-profile guides and discrete step of the shaft equipment installation between the tiers in the point of the cages meeting are considered and studied. Designing, research and installation of discrete reinforcing equipment with the rope-profile guides in the shafts in the point of the cages meeting can significantly diminish disadvantages of the existing (rigid and flexible) reinforcing equipment and can facilitate: to reduce the number of tiers arranged along the full depth of the shaft; to prolong trouble-free life; to cut capital construction costs due to less diameter of the shaft (for flexible shaft equipment); to make maintenance and repair essentially simpler; to reduce significantly metal content of the shaft equipment as compared to rigid shaft equipment; to reduce dynamic vibrations of the “cage-shaft equipment” system; to improve damping properties of the shaft equipment; to reduce the shaft aerodynamic resistance to the level of flexible shaft equipment; to improve reliability and safety of the shaft equipment operation; to eliminate the need to use balance ropes; to prolong life of the rope-profile guides to the level of rigid guides. The research and development of these structures and schemes are resulted in: improved reliability and durability of vertical shaft equipment and increased profitability of minerals extraction from deeper horizons. Introduction of the schemes with discrete step of reinforcing equipment installation in the point of cages meeting (in the middle of the shaft) for different locations of the tiers will significantly improve safety of vertical shaft equipment operation and the hoisting complex as a whole.
Labor safety and control of the working area state in the penals while mining steep coal seams by shield aggregates
Authors:   Institute of Geotechnical Mechanics named by N. Poljakov of National Academy of Sciences of Ukraine, Zberovskyi V.V. , Ahaiev R.А. ,   Institute of Geotechnical Mechanics named by N. Poljakov of National Academy of Sciences of Ukraine, Sofiiskyi K.K. ,   Institute of Geotechnical Mechanics named by N. Poljakov of National Academy of Sciences of Ukraine, Dehlin B.М. ,   State Enterprise "Scientific and Technical Center"Coal Innovation", Yukhymenko V.А. ,   State Enterprise «Toretskvyhillia»
Published: January 2021

In this article, circumstances and factors which can lead to a degraded labour protection and occurrence of emergency in a district are reviewed and analyzed on the example of an accident occurred at sudden coal-and-gas outburst in the panel face № 42-1146 m of the Tovstyi-Zakhid seam m3 in the Central Mine of the Toretsvukhillia Mining Company. In this article, state of equipment and its location in the district in accordance with the requirements of the safety rules, records of devices which monitor gas-dynamic state of the coal seam and operation of the shield aggregate are considered. Mining and geological conditions of the seam bedding and technological conditions of the district location within the working horizon; methane content in the air of the roadways in the district; change of coal physical and mechanical properties in the area of possible geological disturbance; results of control of the coal seam gas-dynamic state analyzed by acoustic emission parameters; and other risk factors that led to emergencies were studied. The decisions made for controlling possible area with geological disturbance impact which was detected in the horizons of 916 m and 1026 m on the basis of mining-graphic materials and data of geological study in the mining roadways adjacent to the panel No. 14 in the district 42-1146 m were analyzed. The order and sequence of the works established for eliminating consequences of the coal and gas sudden outburst and detecting zone with disturbed coal and outburst cavity were considered. On the basis of the results obtained, conclusions were made and actions were elaborated on preventing accidents at mining steep prone-to-outburst coal seams by the shield aggregates. It is recommended to continue the scientific research for the purpose of detecting zone with possible impact of discontinuous geological disturbance and plicate disturbed zones in the coal seams by the changed hardness of coal in the adjacent panel, and developing certain local measures on preventing gas-dynamic phenomena at mining steep prone-to-outburst seams by the shield aggregates. The objective of this work was to analyze state of the working area and labor protection and to study the conditions and factors which had led to the accident with serious consequences and emergency condition of the panel.
On the issue of evaluating efficiency of the occupational safety and health management system in mines
Authors:   Institute of Geotechnical Mechanics named by N. Poljakov of National Academy of Sciences of Ukraine, Shevchenko V.G. , Nosal D.A. ,   «DTEK ENERGO» LLC
Published: January 2021

In terms of occupational safety and health (OSH) management system functioning at the enterprises of the Coal Business Unit of DTEK ENERGO LLC, a number of procedures and techniques have been developed and implemented for improving the OSH management system. However, rate of injuries and accidents is still fairly high at these enterprises. It is proposed to describe effectiveness of the OSH management system as a catastrophe of the “assembly” type. It is further proposed to describe effectiveness of the OSH functioning in mine by a potential function. To this end, probability of an accident (injury) is considered as a coordinate of the disaster, level of development of the coal mining technology means an external parameter, and the internal parameter is presented by the level of readiness of miners to perform processes and operations. With increase of internal control parameter characterizing level of the miners’ readiness to perform basic and auxiliary processes and operations, probability of accident and injury generally decreases; however, this curve is bifurcated by its nature. With increase of external control parameter – i.e. level of technology development - the curve narrows, while width of the catastrophe band decreases. At sufficiently high level of technology development, the system exists only in one state of equilibrium; but when passing a certain critical value, splitting and two alternative stable states appear. The area of the curve, which is limited by critical values of the level of miners’ readiness to perform technological processes and operations, determines an undesirable effect or a value reciprocal to the OSH effectiveness in the mine. At insufficiently high level of technology, a catastrophe (high probability of an accident) can happen both at insignificant and sufficiently high level of the miners’ readiness. In practice, in each mine, these parameters should be normalized and set according to the results of expert evaluation; and quantitative indicators of the level of miner’s readiness to perform processes and operations can be obtained during the psychophysical testing.
A Reflection on Initiatives for Teachers’ Professional Development Through Language Assessment Literacy
Authors: Giraldo Frank
Published: January 2021

In this reflection article I examine language assessment literacy initiatives and their possible impact on teachers, and I discuss the connections that exist between language assessment literacy and teachers’ professional development. I explain that training for language assessment literacy may primarily foster teachers’ knowledge and skills and, secondarily, principles for language assessment (e.g., fairness). In conclusion, existing language assessment literacy initiatives, while limited in number, have the potential to advance teachers’ language assessment literacy overall and contribute to their professional development. Thus, this article may be useful to language teacher educators, particularly in the Colombian context.
Level of English in Colombian Higher Education: A Decade of Stagnation
Authors: Benavides Jorge Eliecer
Published: January 2021

This article analyzes the results of the Saber Pro, the state exam for students completing higher education, during 2007–2017 concerning the English language section. This analysis uses the reports and databases from the Instituto Colombiano para la Evaluación de la Educación (ICFES) repository and explains the policy in its historical context. The results warn of a quite worrying picture between the goals established by the Ministry of Education and the final achievements. The level of English of future Colombian professionals is not only very low but also without improvement from its beginnings in 2007 to 2017. As a conclusion, it would be necessary to review, from the universities’ perspective, the language educational policy and propose bottom-up structural alternatives that allow a sustained impulse in teacher training, methodology, and curricular and pedagogical organization.
Fostering EFL Preservice Teachers’ Academic Writing Skills Through Reflective Learning
Authors: Meza Angélica , Rodríguez Ingrid , Caviedes Lorena
Published: January 2021

This article focuses on the impact reflective learning has on a group of EFL preservice teachers’ academic writing skills through formative feedback and self-assessment at a university in Bogotá (Colombia). The goal was to determine how the participants’ academic writing skills were developed when writing essays for international examinations, and how their reflections upon feedback and their self-assessment process impacted their learning. This study followed a qualitative approach and an action-research design to foster students’ academic writing skills as part of their professional development. The data-collection instruments were essays and teacher’s feedback, students’ journals, and rubrics. The results evidenced learners’ writing skills improvement while implementing reflecting learning, which led to self-regulation and metacognition.
Teachers’ Assessment Approaches Regarding EFL Students’ Speaking Skill
Authors: Duque-Aguilar Jaime Fernando
Published: January 2021

This paper reports an exploratory and descriptive qualitative study on speaking assessment approaches in a teacher education program at a Colombian university. The study aimed to explore how four in-service English language teachers approach the assessment of students’ speaking skill. The data were gathered through classroom observations, interviews, and documentary analysis. Results revealed teachers’ preference for summative assessment practices to determine students’ progress regarding speaking. As a conclusion, teacher professional development in terms of language assessment may be seen as an alternative to develop significant assessment processes where students, teachers, and the institution can be benefited.
Comportamiento epidemiológico de la leptospirosis en México durante el periodo 2013-2019
Authors: Yescas-Benítez José E , Perez Nallely Rivero , Montiel-Díaz Hugo , Valladares-Carranza Benjamín , Peláez-Acero Armando , Morales-Ubaldo Ana Lizet , Zaragoza Bastida Adrian
Published: January 2021

Objetivo Determinar el comportamiento temporal y espacial de la leptospirosis en México durante el periodo 2013-2019.Materiales y Métodos Se utilizó la información depositada en los boletines epidemiológicos del Sistema Nacional de Vigilancia Epidemiológica de México. Para determinar el comportamiento espacial se construyeron canales endémicos y análisis de series de tiempo. Para determinar el comportamiento espacial, se utilizó el modelo estadístico espacial Scan.Resultados Se determinó que los casos de leptospirosis en México se presentan todo el año; sin embargo, los picos endémicos se observaron en los meses de agosto, septiembre y octubre. Con respecto al comportamiento espacial, no se determinó ninguna agrupación estadísticamente; no obstante, los estados con la mayor prevalencia fueron: Sinaloa, con 146.7 casos por cada millón de habitantes, y Tabasco, con 142 casos por cada millón de habitantes.Discusión La leptospirosis es una enfermedad influenciada por los hábitos y las costumbres de la población, al igual que por variables climatológicas que favorecen el contacto con el agente etiológico. Esto coincide con lo reportado por otros estudios que han determinado que la incidencia de leptospirosis aumenta durante la época de lluvia y que esta enfermedad se relaciona con actividades de recreación en zonas tropicales.Conclusiones La leptospirosis es una enfermedad zoonótica emergente de gran importancia en México, que se presenta con mayor frecuencia en época de lluvias. Los estados de Sinaloa y Tabasco son los más afectados.
Culto ao corpo e suas formas de disseminação através das mídias: uma revisão integrativa no olhar da Educação Física
Authors: Pereira Mara Dantas , Cerigatto Mariana Pícaro
Published: January 2021

Este trabalho teve como objetivo realizar uma análise da produção científica sobre a influência da mídia no âmbito da Educação Física Escolar e Universitária, a fim de discutir sobre conceitos, métodos e ações pedagógicas utilizadas por professores de Educação Física. Trata-se de revisão integrativa da literatura, realizada por meio da busca por artigos científicos capturados nas principais bases de dados. Por meio dos estudos analisados, foi possível compreender a necessidade de romper as barreiras criadas pelo sistema hegemônico de culto ao corpo, que afeta especialmente os jovens. No contexto formativo e educacional é necessário atribuir ao currículo acadêmico dos professores e nas aulas de Educação Física as implicações dos conteúdos midiáticos nos padrões corporais, o que leva o professor a trabalhar além do aspecto biológico. Os docentes devem promover a criação de ferramentas e conteúdos que despertem nos alunos uma visão crítica diante do que é imposto pela mídia e a indústria da beleza no ideal de corpo. Conclui-se que o trabalho possibilitou trazer reflexões e um confronto de ideias em torno do influxo das mídias sobre os saberes de corpo de estudantes e professores.
Electric-field-assisted processing of ceramics: Nonthermal effects and related mechanisms
Authors: Guillon Olivier , De Souza Roger A. , Mishra Tarini Prasad , Rheinheimer Wolfgang
Published: January 2021

Field-assisted processing methods, such as spark plasma sintering and flash sintering, have considerably expanded the toolbox of ceramic engineering. Depending on the conditions, substantial electric currents may flow through the material resulting in fast heating rates due to Joule heating. Here, we focus on nonthermal effects induced by electric fields during processing of fluorite- and perovskite-based ceramics. The fundamentals of how a field can directly modify defect formation and migration in crystals are discussed. In addition, the interplay of ion transport and electrical conductivity is considered, this interplay being crucial to understanding nonthermal effects caused by electric fields (as in memristive switching). Electrochemical reactions leading to new phases or reduction are also described, as are densification rates and sintering parameters that are significantly affected even though the sample temperature is held constant. Finally, as grain-boundary properties and segregation are changed by ion transport, we describe how both retardation and acceleration of grain growth can be achieved including graded microstructures.