bluuebunny/crossref_metadata_2025 huggingface dataset:
Diseño, construcción, caracterización y ensayo de prueba de un túnel de viento vertical, para ensayos de caída libre de cuerpos
Authors: Garro Santiago , Pezzotti Santiago , Nadal Mora Vicente
Published: April 2021

En el presente trabajo se detalla el proceso de diseño, construcción y caracterización de un túnel de viento vertical para el ensayo de objetos en caída libre. El túnel de viento constituye un equipo especial para pruebas experimentales, en el que se busca conocer la interacción entre un cuerpo en estudio y el flujo uniforme de aire a diversas condiciones de velocidad, con la finalidad de evaluar el comportamiento fluidodinámico, energético, aerodinámico y estabilidad del cuerpo en estudio, con la particularidad de que el flujo de aire circula de abajo hacia arriba, simulando una condición de vuelo casi libre del cuerpo. El túnel de viento está compuesto por una cámara o sección de pruebas, un ventilador encargado de generar la corriente de aire, conductos y adaptadores, y la instrumentación necesaria para la realización de mediciones. El presente túnel fue desarrollado principalmente con el objeto de ensayar pararrotores. Estas sondas poseen como objeto principal frenar la caída libre de un cuerpo en la atmósfera. Existen múltiples aplicaciones de estos deceleradores, como la recuperación de elementos provenientes del espacio, la estabilización del giro de proyectiles, el transporte de cargas con precisión y el uso de sondas meteorológicas. Así mismo, tienen una potencial aplicación en el envío de sensores donde el riesgo de ingreso es muy elevado, como ser incendios o zonas afectadas por derrames tóxicos o bacteriológicos.
Parallel decomposition of control algorithms for computational processes based on the use of nondeterministic automaton logic
Authors: Pashchenko Dmitry V. , Martyshkin Alexey I. , Trokoz Dmitry A. , Pashchenko Tatyana Yu. , Babich Mikhail Yu. , Butaev Mikhail M.
Published: April 2021

The paper deals with the issues of decomposition of control algorithms for the processes in parallel computing systems and the use of automaton models. When designing parallel processing systems, an important task is the formal presentation of process control algorithms since they allow achieving a packaged solution to the problems of specification, development, implementation, verification, and analysis of complex control systems, including the control of interacting processes and resources in parallel computing systems. It is especially necessary to use formal methods to verify complex information processing systems by model testing. One of the methods for the formal description of control algorithms is based on the use for these purposes of the nondeterministic automaton (NDA) logic, which is a method that allows one to present control algorithms for information processing in the form of systems of canonical equations describing all particular events implemented in the algorithm. The advantage of such a language is that all transitions in the control system are described not in terms of system states, but in terms of particular events, the simultaneous existence of which determines all states and transitions in the system; this allows avoiding a "combinatorial explosion" in the state space to the possibilities of means verification. Purpose of the paper: research of control algorithms for parallel computing systems using the NDA apparatus. The development and research object is parallel decomposition of control algorithms for parallel computing systems using automatic models.
Digital transformation of russian economy: challenging the highest rank in the global innovation development
Authors: Lazarev Gennadiy I. , Varkulevich Tat’ayna V. , Andreev Viacheslav A.
Published: April 2021

A simple prognostic method was applied to estimate the percentage ratio of the digital economy in Russia’s GDP relying on technology solutions expenditure and sectoral investment. The research indicates a significant impact of Russia’s digital sector on innovation development in B2B, B2G, and B2C segments. The prognostic analysis shows the extension of on-line education, social networking, e-commerce, private and corporate banking, and end-to-end technology solutions in manufacturing. The findings point at the opportunity for the sectoral investment extension and steady annual growth 7-8 % in the next few years. Due to requirements on updating the technological solutions in the related public services, the digital sphere can support the annual growth in the national economy by 1,0-1,2 % until 2024. Respectively the digital economy in Russia will be growing faster the world's average to provide the sector’s contribution of 8,0-8,1 % in GDP by 2024. The findings show the digital platforms are becoming a driver for innovation development integrating the production process, cloud resources, data analysis, and e-learning services. The research contains hints on improving the research efficiency and winning the talent battle that promises to improve the country’s global innovation and economic ranks.
Public administration in the context of reflection of the modern innovative dig-ital level of economic development
Authors: Ovcharenko Georgy V. , Petruk Galina V. , Larkina Natalia G. , Yalanskiy Alexander P.
Published: April 2021

The article analyzes the state and society's interaction to achieve an innovative idea based on strategic thinking and culture, which determine justice in society, realize their behavior, and substantiate the importance of innovative digital technologies in a neo-information society determines a person as innovative. The research shows the necessity of innovative thinking among different-level managers able to create and manage innovative knowledge of personnel, creating innovative values. A practical vector of the transition of the economy to an innovation level is proposed.
Calculation of active earth pressure on retaining walls with line surcharge effect and presentation of design diagrams in cohesive – frictional soils
Authors: Ahmadabadi Mojtaba , Faghirizadeh Mohammad Karim
Published: April 2021

In this study, a formulation and models have been proposed to calculate the active earth pressure on the wall and to determine the angle of failure wedge with line surcharge effect and taking into account the soil cohesion. The proposed method has the advantage of taking into account soil parameters such as cohesion, the angle of friction between the soil and the wall, the surcharge effect in the elasto-plastic environment, and the range that determines the critical surcharge. This paper presents dimensionless diagrams for different soil specifications and surcharges. According to these diagrams, it is easy to determine the distribution of excess pressure caused by surcharge, the distribution of the total active earth pressure on the wall, the angle of the failure wedge as well as the minimum and maximum active coefficient of the pressure with respect to surcharge distance. Furthermore, all soil parameters, surcharge and the results have been addressed. In general, the results indicated that increasing the angle of internal friction of the soil and cohesion would result to a nonlinear reduction in the active earth pressure coefficient, contrary to the line surcharge, which increases the active earth pressure of the soil and ultimately increases the active earth pressure coefficient. In this research, a diagram has been presented that expresses the surface that the active earth pressure coefficient changes with respect to the surcharge distance. The lower limit of each graph expresses the minimum active earth pressure coefficient (kas (min)) at the minimum surcharge distance, whereas the upper limit indicates the maximum active earth pressure coefficient (kas (max)) at the maximum surcharge distance from the wall. Comparison of the results of the proposed method with previous methods, codes and numerical software shows that in general, the proposed method is able to simplify the analysis of walls with surcharge effect in cohesive-frictional soils. In addition to the formulation and diagrams, a computer program in MATLAB software has been written. Using the results of these codes, the pressure on the wall with the linear surcharge effect, angle of failure wedge and pressure distribution on the wall in the cohesive-frictional soils can be calculated for all scenarios.
Emergence of the open innovation model and factors of transition to it
Authors: Udaltsova Natalya
Published: April 2021

Modern transnational companies are increasingly resorting to the open innovation model. The role of innovation is growing all over the world. The development and implementation of innovations in the current activities of companies characterize the effective competitive development of an organization in the market. This model has a number of advantages: faster development of innovations, the ability to save on R&D via outsourcing innovations, access to the most modern innovations of other companies, etc. The purpose of this study is to identify the factors that determine the transition of an increasing number of companies in the world to the open innovation model. In this paper, using the analysis of academic literature, various views on this process have been considered. The work identifies the factors of the development of the open innovation model in the modern world. As a result of the study, the authors have identified the factors that determine the transition of companies to the open innovation model from the traditional closed innovation model.
Economic mechanisms to regulate environmental protection practices in industrial and household waste management in the Russian Federation
Authors: Bezdudnaya Anna Geroldovna , Treyman Marina Gennadievna , Ksenofontova Tatyana Yuryevna , Smirnov Roman Valentinovich , Prokopenkov Sergey Vyacheslavovich , Kosheleva Tatiana Nikolaevna
Published: April 2021

The study focuses on the aspects of environmental protection practices in the Russian Federation primarily with regard to industrial and household waste management. Waste now occupies significant areas and causes pollution of the adjacent territories and specifically underground waters that further mix with, and significantly spoil, ground waters. The study addresses the technologies of interaction and methods of economic stimulation to improve waste management going further both at the regional and national level. Almost no progress has been achieved in this direction in the Russian Federation over the past ten years – the main technological mechanism adopted in major cities and other major infrastructure facilities consisted in waste removal to a landfill without any specific treatment. More recently, urban and technological development has intensified environmental problems. The paper outlines waste management practices employed in Russia and other countries and provides an efficiency assessment. The basic economic mechanisms, such as tariff regulation, environmental levy and environmental impact fees, are described and assessed in terms of their stimulating effects on waste management improvement in the Russian Federation. Aspects of waste removal under a single regional operator are discussed and a model of public-private partnership in waste management is proposed and detailed.
Describing law of motion of flexible inextensional shell in gravity force field
Authors: Byrdina Marina V. , Bekmurzaev Lema A. , Mitsik Mikhail F. , Kurenova Svetlana V.
Published: April 2021

This work makes use of Navier-Stokes equations to describe an analytical method of finding the motion speed of a flexible inextensional shell falling down to the ground from a preset height and determines the duration of this fall. The soft shell in question is a fabric body of aerodynamic shape or an item of clothes, an airborne vehicle element, etc. Analytical relations are presented for the speed at which the shell moves in the air, taking account of the air resistance and the shell fall duration. The boundary problem of the soft shell vertically falling in the air is solved.
Housing market: the concept, features, and role in the socio-economic development of the state
Authors: Litvinova Elena Vladimirovna , Danilova Veronika Andreevna
Published: April 2021

The research is based on the dialectical method which predetermines the study of phenomena in their constant development and interrelation. Besides, the article uses a systematic approach, methods of comparative, statistical, and graphical analysis. The novelty of the present article lies in the proposal for adjustments to the calculation of the housing affordability index in the Russian Federation (RF), as well as the proposed typology of housing in the RF taking into account lifestyles of various categories of the population. The authors have developed the version of the content of the infrastructure of the commercial rental of housing, which defines it as a system of material and information conditions ensuring stable and efficient production of housing services (housing rental services) through the operation of both commercial apartment buildings and other objects of the rental housing market. A system of measures is proposed to remove the rental housing market from the shadow and its further development including that of the commercial apartment building business.
Escola, catequese e formação de professores: os missionários orionitas e a catolicização do antigo extremo norte de goiás por intermédio da educação, 1950-1960 / School, catechesis and teacher formation: the orionite missionaries and the catholicization of the old far Northern Goiás through education, 1950-1960
Authors: Silva Raylinn Barros da
Published: April 2021

O objetivo deste estudo é refletir o processo de catolicização do antigo extremo norte de Goiás, por intermédio da educação, processo desencadeado pelos missionários católicos orionitas nas décadas de 1950 e 1960. Este estudo é resultado de uma pesquisa bibliográfica e as fontes analisadas são as obras de memória dos próprios missionários. A justificativa para este estudo é a necessidade de historicizar essas fontes, o que contribui para a compreensão de parte da história religiosa da região, atual norte do Tocantins.***The aim of this study is to reflect the process of catholicization of the ancient far northern of Goiás, through education, a process triggered by the Orionite Catholic missionaries in the 1950s and 1960s. This study is the result of a literature search and the sources analyzed were pieces of memory of the own missionaries. The justification for this study is the need to historicize these sources, which contributes to the understanding of part of the religious history of the region, current northern Tocantins.
Atributo de alma e coração praticado: a voz de Riva Bauzer na formação do adminitrador público (EBAP, 1965-1970) / Attribute of soul and practiced heart: the voice of Riva Bauzer in the formation of the public adminitrator (EBAP, 1965-1970)
Authors: Corrêa Laura Henrique , Oliveira Aline Lourenço de
Published: April 2021

Este texto incide sobre a atuação feminina no período de implantação dos cursos de administração pública no Brasil. Para tanto, foram analisadas as publicações da Escola Brasileira de Administração Pública (EBAP) durante o período de produção do periódico – 1954 a 1977. Neles, a autora que mais publicou foi Riva Bauzer, com os títulos: formação para administração pública I (1965), II (1966), e III (1970); nos quais expõe abordagens educativas que integraram o processo de surgimento da experiência brasileira de formação do administrador público. Em seus registros se identifica a frequente preocupação com a elaboração de saberes locais, produzindo lacunas no discurso mais ratificado da época. Ao final é possível perceber um posicionamento efetivado na percepção do educando brasileiro, seu território e particularidades, entoado por uma ação educativa que esbanja clareza e arte: atributo de alma e coração praticado.***This text focuses on women's activities during the implementation of public administration courses in Brazil. To this end, the publications of the Brazilian School of Public Administration (EBAP) were analyzed during the period of production of the journal - 1954 to 1977. In them, the author who most published was Riva Bauzer, with the titles: training for public administration I (1965), II (1966), and III (1970); in which it exposes educational approaches that integrated the process of elaborating the Brazilian experience of training public administrators. Its records identify the frequent concern with the elaboration of local knowledge, producing gaps in the most ratified discourse of the time. At the end, it is possible to perceive an effective positioning in the perception of Brazilian students, their territory and particularities, intoned by an educational action that oozes clarity and art: attribute of soul and practiced heart.
O Colégio Estadual Mário de Andrade: da criação à consolidação como intituição pública de ensino secundário em Francisco Beltrão-PR (1964–1982) / The State College Mário de Andrade: from creation to consolidation as a public institution os secondary education in Francisco Beltrão-PR (1964–1982)
Authors: Severgnini Alisson Fernando , Castanha André Paulo
Published: April 2021

O presente texto apresenta resultados de uma pesquisa em nível de Mestrado. A pesquisa efetivou-se por meio de fontes bibliográficas, documentais e de entrevistas com ex-professores e ex-diretores da instituição. As entrevistas foram realizadas com base na metodologia da História Oral. A pesquisa se insere dentro da História das Instituições Escolares e adotou uma perspectiva dialética para compreender a história e o papel do Colégio Estadual Mário de Andrade – CEMA, dentro do cenário de desenvolvimento do município de Francisco Beltrão e região no período de 1964 e 1982. A partir da instalação da Colônia Agrícola Nacional General Osório – CANGO, em 1948, e da regularização da posse da terra, efetivada pelo Grupo Executivo para as Terras do Sudoeste do Paraná – GETSOP, entre 1962 e 1974, Francisco Beltrão teve um desenvolvimento acelerado. O crescimento populacional possibilitou o desenvolvimento econômico, social e urbano levando a necessidade da implantação de níveis de ensino mais avançados. O CEMA se tornou referência por ser a primeira instituição pública a oferecer o ensino de nível secundário de formação geral e, posteriormente, ao atender a demanda de ensino técnico profissionalizante. Durante muito tempo, foi a única instituição pública a oferecer o ensino de nível médio, tendo contribuído, portanto, para a formação propedêutica e profissional de muitos cidadãos de Francisco Beltrão.***This text presents the results of research at the Master's level. A research was carried out through bibliographic sources, documents and interviews with former professors and former directors of the institution. The interviews were conducted based on the Oral History methodology. A research carried out within the History of School Institutions and adopted a dialectical perspective to understand the history and role of the Mário de Andrade High State College- CEMA, within the development scenario of the municipality of Francisco Beltrão and region in the period of 1964 and 1982. Since the installation of the National Agricultural Colony Osório General - CANGO, in 1948, and the regularization of land tenure, carried out by the Executive Group for Lands of the Southwest of Paraná - GETSOP, between 1962 and 1974, Francisco Beltrão had an accelerated development. Population growth has enabled economic, social and urban development, leading to the need to implement more advanced levels of education. CEMA became a reference for the first public institution to offer secondary education for general training and, later, to meet the demand for professional technical education. For a long time, it was the only public institution to offer secondary education, thus contributing to the propaedeutic and professional training of many citizens of Francisco Beltrão.
Building a Self-Confidence Scale According to the Item Response Theory for High School Students in Jordan
Authors: Alkhaldi Hani , Alkhutaba Malek , Al-Dlalah Mohammad
Published: April 2021

This study aimed to build self-confidence for high school students in Al-Mafraq Governorate in Jordan following the Item Response Theory (IRT). The scale included its initial version (50) items. To ensure the external validity of the scale, it was reviewed by several experts. According to the experts’ feedback, some items should be deleted or modified. The final version of the scale included (44) items. The scale was further applied to an experimental sample of (310) male and female students to verify psychometricians’ characteristics. Finally, the scale was administered to a sample of (1060) male and female high school students in Al-Mafraq Governorate. Data were collected, coded, and analyzed using statistical programs (SPSS and WINSTEPS). The most important results were the following: the self-confidence measure was one-dimensional, which means it measures only a single dimension. The results further revealed identical to the partial estimation model, and the index of average matching of individuals and the external and internal items approached zero, and the standard deviation approached the correct one. The estimated values of the distinct thresholds for the scale items showed a clear discriminatory ability and the emergence of particular threshold scores on the scale. After deleting the paragraphs that did not fit the study's model, the scale's final version included 39 items. The results also showed that the transfer values of logistical capacity units were within (-2.88 -2.77), within the IRT's accepted range.
EU-burgerschap en toegang tot sociale voordelen over de grens
Authors: Pennings F.J.L.
Published: April 2021

EU-burgerschap en toegang tot sociale voordelen over de grens

In recente arresten heeft het Hof van Justitie uitgemaakt dat als een land door middel van een nationaliteits- of woonplaatseis de toegang tot zijn stelsel beperkt, ook niet-economisch actieven deze eisen kunnen aanvechten op grond van de bepaling van het Europees burgerschap. Wel mogen lidstaten bepaalde goed beargumenteerde beperkingen stellen voor personen met een vreemde nationaliteit, zoals dat men vijf jaar in Nederland heeft gewoond voordat men recht heeft op studiefinanciering. Nu rijst een aantal vragen. Hoe kan het dat de bepaling van het Europees burgerschap een dergelijk effect heeft? Zijn er nog verschillen tussen economisch actieve en niet-actieve burgers? Is de jurisprudentie over het burgerschap geen bedreiging voor nationale welvaartsstaten? Deze vragen worden in deze bijdrage behandeld. Daarbij komt ook het recente arrest Europese Commissie tegen Nederland (C-542/09) aan de orde.
De ontbindingsprocedure: rechtsmiddelenverbod en bewijsrecht
Authors: Bij de Vaate D.M.A.
Published: April 2021

De ontbindingsprocedure: rechtsmiddelenverbod en bewijsrecht

De ontbindingsprocedure kent twee procesrechtelijke bijzonderheden: het rechtsmiddelenverbod en het bewijsrecht. Deze bijzonderheden brengen niet mee dat de ontbindingsprocedure in strijd is met artikel 6 EVRM. Artikel 6 EVRM vereist immers niet een berechting van een zaak in twee feitelijke instanties. Bovendien is de ontbindingsrechter altijd gehouden, ook in een spoedeisende ontbindingsprocedure, het beginsel van ‘equality of arms’ in acht te nemen op straffe van doorbreking van het appèlverbod.Dit voorkomt echter niet dat de ontbindingsrechter, net als iedere andere rechter (in laatste en hoogste instantie), soms in strijd zal handelen met artikel 6 EVRM of anderszins een ‘fout’ zal maken in de beoordeling van het geschil. Voor dergelijke incidentele schendingen van artikel 6 EVRM door de kantonrechter is veelal een doorbreking van het appèlverbod mogelijk. Voor de inhoudelijk onjuiste ontbindingsbeschikking kan het leerstuk van onrechtmatige rechtspraak uitkomst bieden.
De Wet normering bezoldiging topfunctionarissen publieke en semipublieke sector (WNT): (in) werking
Authors: Verburg L.G.
Published: April 2021

De Wet normering bezoldiging topfunctionarissen publieke en semipublieke sector (WNT): (in) werking

Op 1 januari 2013 trad de Wet normering bezoldigingen topfunctionarissen publieke en semipublieke sector (WNT) in werking. Deze bijdrage bevat een beschouwing over deze ‘unieke’ wet: het doel, de keuzes, de middelen, het overgangsrecht en natuurlijk de vraag of de WNT bestand is tegen lieden die het beloningsspel niet (ruiterlijk) willen meespelen. Een uitvoerige beschouwing over het belangrijke thema van de uitkering wegens de beëindiging van het dienstverband (de ontslagvergoeding) − inclusief het terrein van de op non-actiefstelling − laat zien dat de WNT allerminst waterdicht is. De WNT laat daarbij een belangrijk gebied onbelicht: de praktijk van het maken van afspraken over een afkoop van wachtgeld/bovenwettelijke WW-rechten. De auteur doet de suggestie dat het kabinet het (zoals eerder toegezegd) in de loop van 2013 te verwachten wetsontwerp tot aanpassing van de WNT aangrijpt om enige verduidelijking te bieden omtrent de wijze waarop de praktijk volgens de wetgever met een en ander moet omgaan.
Derogerende werking van de redelijkheid en billijkheid in het arbeidsrecht
Authors: Jansen C.J.H. , Jansen J.E.
Published: April 2021

Derogerende werking van de redelijkheid en billijkheid in het arbeidsrecht

De auteurs gaan in op de betekenis van de beperkende werking van de redelijkheid en billijkheid voor het arbeidsrecht. Zij doen dit aan de hand van de uitspraak van de Hoge Raad in ABN AMRO/werknemer, waarin het college voor het eerst overweegt dat een beroep van de werkgever op de vervaltermijn van zes maanden in artikel 9 lid 3 BBA op grond van de specifieke omstandigheden van het geval naar redelijkheid en billijkheid onaanvaardbaar is. Tevens besteden zij aandacht aan het oordeel van de Hoge Raad dat de gezichtspunten uit de rechtspraak over verjaringstermijnen ex artikel 3:310 lid 1 en 2 BW niet van overeenkomstige toepassing zijn op een geval als het onderhavige. In navolging van de A-G zijn de auteurs kritisch ten aanzien van de afwegingen die de Hoge Raad hierover maakt. Ook anderszins hebben zij moeite met de onderbouwing van de uitspraak door de Hoge Raad.
Promoveren in het arbeidsrecht – een overzicht
Authors: Beltzer R.M.
Published: April 2021

Promoveren in het arbeidsrecht – een overzicht

Wie wil weten welke dissertaties in Nederland op het terrein van het arbeidsrecht en het socialezekerheidsrecht zijn verschenen, wacht een lange zoektocht. De verscheidene digitale bibliotheken bieden (nog) geen makkelijk doorzoekbaar, relevant overzicht. In deze bijdrage is gepoogd een dergelijk overzicht te geven. De bijdrage bevat niet alleen een lijst van de door de auteur gevonden dissertaties, maar ook informatie omtrent, onder andere, (trends in) gekozen proefschriftthema’s, aantallen dissertaties per faculteit en per decennium.
Toegang tot het recht in de rechtsstaat
Authors: Schnabl Nathalie Franziska Hendrika
Published: April 2021

Toegang tot het recht in de rechtsstaat

This paper considers access to the rule of law as a requirement for the well-functioning of the rule of law in society. In most rule of law debates, access to the rule of law is not a topic of discussion because these scholars focus themselves solely on the legalistic dimension of the rule of law. Barber was the first to mention the social dimension explicitly but without a theoretical framework. Based on the three capitals of Bourdieu, this paper offers a framework to determine the elements of the social dimension. With these capitals, barriers to the access to the rule of law for individuals can be identified, and solutions can be offered.
Análisis de redes egocéntricas con R (IV). Análisis multinivel
Authors: Vacca Raffaele
Published: April 2021

Este texto es el cuarto y último de la serie que constituye un taller sobre análisis de ego-redes (y/o redes personales) con R. El texto está acompañado por ejemplos de datos y los scripts de lenguaje R necesarios para realizar las actividades propuestas.
A SCIENTIFIC EVENING WITH N.A. BERNSTEIN, R.M. YERKES, J.D. DODSON AND D.O. HEBB
Authors: Petryński Wacław
Published: April 2021

Author compares various models of relation between stress and efficiency of a motor operation, described with the Inverted-U Principle (IUP), Multidimensional Theory of Anxiety (MTA) and Catastrophe Model of Anxiety (CMA). He presents the “classical” theory, invented by R.M. Yerkes and J.D. Dodson in 1908, and modified significantly by D.O. Hebb in 1955. The latter is commonly known as the Inverted-U Principle (IUP). Author focuses his analyses on two factors determining the efficiency of a motor operation: cognitive factor (depth of information processing) and temporal factor (speed of information processing). Stress, of multimodal nature, may either stimulate, or deteriorate the efficiency of a motor operation just being performed. One of the possible descriptions of the structure of a motor operation bases on the theory invented by N.A. Bernstein (Brain Skyscraper – BS). Its continuation enabled creation of two other scientific models, the Modalities’ Ladder (ML) and the Movements’ Management Matrix (MMM). They make a specific perspective enabling joining the theories concerning stress-efficiency relation. This perspective unveils two mechanisms of efficiency deterioration: hypervigilance and hypovigilance, and, consequently, their different products: mistake, proper execution, choking and collapse. Finally, author remarks that the already long known theories may still include great resources of scientific explainability, and that the main task of science is not absolutely true mirroring of reality, but creation of its simplified models. They should be comprehensible enough to be useful in practice. This concerns also the issues of rather complex relation between stress and efficiency in a motor operation.
Effect of vibration therapy on fasting glucose, insulin level and HOMA2 score in women with pre-diabetes history
Authors: Piotrowska Anna , Tota Łukasz , Czerwińska-Ledwig Olga , Bigosińska Monika , Potok Halina , Cisoń-Apanasewicz Urszula , Zuziak Roxana , Wrześniewski Krzysztof , Tyka Anna , Żmuda-Pałka Mgdalena , Pałka Tomasz , Pilch Wanda
Published: April 2021

Introduction: Low frequency vibrations affect the whole body. It’s proposed that they can be an effective tool to improve glycemia by the activation of a large number of muscle fibers. The therapy effectiveness depends on the use of a stimulus characterized by appropriate parameters (frequency, amplitude, time) and proper propagation.
Aim of the study: The aim of the study was to evaluate the effect of a series of 21 treatments using oscillating-cycloid vibrations on carbohydrate metabolism in women over 55 years with history of fasting hyperglycaemia in their medical history.
Material and methods: The study involved 50 women (age: 67.0 ± 5.9) randomly assigned to groups. The study group was subjected to 21 vibration therapy interventions, the control group participated in the procedures using specially modified placebo devices. Before the start of the treatment and on days 10 and 21, glucose and insulin levels were measured and then HOMA2IR, HOMA% B and HOMA% S. were calculated.
Results: After 21 days of vibrations, a significant decrease in insulin concentration was noted in the experimental group (from 21.9 ± 11.2 μIU / ml to 12.8 ± 2.7 μIU / ml). This effect was confirmed by the change in the HOMA2IR index.
Conclusions: The stimulus applied in the form of 21 vibration treatments seems to be a promising form of therapy in the studied group. These results indicate the need for further testing with addition of nutrition control.
Legal and institutional conditions and the work practice of social workers in relation to social care clients
Authors: Mucha Wojciech
Published: April 2021

This paper discusses selected aspects of the work of social workers, including the difficulties
arising between them and social care clients. Concentrating on the legal
and institutional conditions, the author analyses the types of barriers existing in the performance
of social care duties and the difficulty of overcoming them. One of them is
the struggle with the pandemic, which takes the form, among others, of supervising
the elderly who are the most vulnerable to health loss. There is no doubt that this aspect
points to a safety issue for field workers performing their duties.The article also discusses
such issues as the public administration's incorrectly functioning co-determination
system or the lack of analytical and advisory support for social workers.
A CIDADE DO ANÔNIMO: EXPERIMENTAÇÕES ÉTICAS
Authors: Baptista Luis Antonio dos Santos , Candido Mario Cesar Carvalho de Moura , Ávila Raphael Ferreira de
Published: April 2021

Deseja-se, nesta escrita, pensar o poder da máscara e do anonimato comoformas de experimentação ética e política. Para tanto, é preciso se permitircontagiar pela intensidade dos paradoxos das lutas sociais que hoje habitamas ruas da cidade contemporânea. Ensaia-se, neste artigo, a tentativa de fazerdo anônimo uma ferramenta conceitual que forneça o oxigênio necessáriopara continuarmos atentos às barbáries da atualidade, distanciando-nosda dinâmica de uma subjetividade privatizada, assim como das amarrasde um coletivo identitário. Os autores consultados no texto formulam ahipótese na qual o anônimo seria uma modalidade de resistência. Qualresistência? Qual seria a aposta ética presente no anonimato? Esses exercíciose experimentações apontam para conclusões abertas que visam a ampliar etornar mais complexa a capilaridade da violência de Estado, assim como asinesgotáveis formas de combatê-la.
RESISTIR PARA PESQUISAR, PESQUISAR PARA RESISTIR: CONSTRUINDO UMA SUSTENTABILIDADE AFETIVA NA UNIVERSIDADE
Authors: Mansano Sonia Regina Vargas , Liberato Mariana Tavares Cavalcanti
Published: April 2021

A exigência crescente por pesquisas científicas já se tornou cotidiana nas universidades de nosso país, especialmente naquelas que mantêm um conjunto expressivo de cursos com formação em stricto sensu. O objetivo deste artigo consiste em problematizar essa demanda, explorando dois ângulosdo conceito de resistência: a resistência necessária para acolher e lidar com as exigências burocráticas presentes no exercício do pesquisar, e resistência desenhada nas possibilidades de fazer das pesquisas um exercício vivo de pensamento. Esses dois ângulos, que coexistem em nosso tempo histórico, colocam aos pesquisadores o desafio de criar uma prática de pesquisa aliada da transformação social, mas também conectada a experimentação dos afetos e seus desdobramentos. Ao fim do estudo, será possível demonstrar que a prática das pesquisas implica dimensões burocráticas, mas vai muito além delas, testemunhando também a relevância de formar pesquisadores sensíveis, capazes de acolher e analisar realidades sociais de modo afetivo e contextualizado.
PESQUISAR/INTERVIR NA EDUCAÇÃO BÁSICA: O GRUPO COMO RESISTÊNCIA
Authors: Romagnoli Roberta Carvalho
Published: April 2021

Este artigo coloca em discussão a potência do dispositivo grupal na produção de dados da pesquisa “Educação básica e família: reproduções e invenções no programa Escola Integrada de Belo Horizonte (PEI)”, que busca conhecer as relações estabelecidas pelos coordenadores e alunos em formação docente nas oficinas. Trata-se de um programa de formação docente implantado e mantido pela Prefeitura Municipal de Belo Horizonte, com base na ampliação da jornada escolar, com estudantes universitários de diferentes áreas do conhecimento. Este estudo tem a pesquisa-intervenção como metodologia e as ideias de Deleuze e Guattari como marco teórico, em diálogo com as ideias de Bourdieu. Com base nas discussões do território escolar, no que se refere à relação com a família e à violência, o grupo aparece aqui como resistência, como um dispositivo que favorece a emergência do coletivo na criação de processos de subjetivação inventivos.
REPRESENTAÇÕES EM CONSTRUÇÃO ENTRE IDOSAS E JOVENS EXPOSTOS A NOVAS PRÁTICAS SOCIAIS NA VELHICE
Authors: Rabelo Vannessa de Resende Cardoso , Arruda Angela
Published: April 2021

Este artigo analisa representações sociais sobre o velho e o envelhecimento em dois grupos focais, um de idosas e outro de jovens, realizados em entidades que propõem atividades para essas faixas etárias em Juiz de Fora (Estado de Minas Gerais). Apoia-se na teoria de Moscovici e de Jodelet, e a análise, pelo software Alceste, identifica cinco classes. As classes características dos jovens trazem a figura do idoso de antigamente e de hoje, bem como a sabedoria da velhice. A classe típica das idosas aponta o medo da solidão e da dependência, bem como o desejo de autonomia. Já as demais apontam a falta de paciência e o desrespeito como um problema na relação da sociedade com os idosos. Em conclusão, os dados revelam, apesar da presença de representações hegemônicas, indícios de uma “nova velhice”: a vinculação dos idosos à tecnologia, segundo os jovens; e a busca da autonomia, para as idosas.
Desenvolvimento de Habilidades Tecnológicas como Ferramenta de Qualificação para a Comunidade Migrante da Cidade de Rio Grande/RS
Authors: Mota Fernanda , da Silva Janaina , Adamatti Diana
Published: April 2021

O pensamento computacional contribui para o desenvolvimento das competências adjacentes do indivíduo. Em nossa pesquisa, o pensamento computacional pode ser visto como um meio para auxiliar no processo de resolver problemas e aprender sobre o uso da tecnologia. Este trabalho tem como objetivo principal propor o uso de ferramentas computacionais para a capacitação da população migrante de origem haitiana e senegalesa na cidade do Rio Grande/RS. Os resultados deste estudo nos possibilitou observar o avanço dos estudantes com informática, desde o simples toque ao mouse até a criação de uma apostila própria. Esta formação auxiliou os indivíduos a reduzir sua vulnerabilidade social a partir da qualificação com informática básica.
Investigation of Factors Affecting Friction Stir Welding of Polyethylene by ANOVA Analysis
Authors: BİLİCİ Mustafa Kemal , YUKLER Ahmet İrfan , KURTULMUS Memduh , KARTAL İlyas
Published: April 2021

The variables that are effective in joining high density polyethylene sheets by friction stir welding (FSW) have been investigated. In order to understand the effects of welding parameters, using Taguchi optimization, tool rotation speed, feed rate, shoulder diameter and pin diameter values were selected in a wide range. The results obtained with Taguchi optimization method were evaluated according to the highest / the best signal-noise ratio. Macro photographs taken cross-sectional view taken the weld seam, SEM images and hardness measurements were used to evaluate. As a result of the evaluation, the accuracy of the optimization was found to be approximately 96 %. As a result, feed rate and shoulder diameter were determined as the most effective parameter affecting the welding quality and welding performance. These two parameters (shoulder diameter and feed rate) have found to effect of approximately 65 % on tensile strength, weld quality and hardness. Finally, it has obtained that the most effective welding parameter was the shoulder diameter with 40.81 %.
Dental Stem Cell Banking and Applications of Dental Stem Cells for Regenerative Medicine
Authors: Bates Karley , S. Gallicchio Vincent
Published: April 2021

Since the identification of mesenchymal stem cells, stem cell biology is a greatly researched field of regenerative medicine and tissue engineering therapies and has become an essential part of dentistry. Mesenchymal stem cells are multipotent stem cells that can differentiate into many cell types. Dental mesenchymal stem cell populations have been identified in dental pulp, human exfoliated deciduous teeth, periodontal ligament, dental follicle of third molars, tooth germ of third molars, gingiva of periodontium, alveolar bone, and apical papilla. Dental stem cells are the most natural, noninvasive source of stem cells that have been identified, and they have gained recent attention due to their accessibility and the associated relatively low cost of integration into regenerative therapy. Long-term preservation of dental stem cells is becoming a popular consideration and mirrors the ideology of banking umbilical cord blood. This review outlines the recent progress in the mesenchymal stem cells used in dentistry as well as some advancements that are being made in preserving dental stem cells for future personalized medicine. The aim of this study was to completely and concisely review the current use of adult dental stem cells specifically oral sources of stem cells, banking of dental stem cells, and applications or uses of dental stem cells specifically in oral regions and in a clinical setting.
VIGOR: A Versatile, Individualized and Generative ORchestrator to Motivate the Movement of the People with Limited Mobility
Authors: Liang Yu , Wu Dalei , Ledesma Dakila , Guo Zibin , Kaplanoglu Erkan , Skjellum Anthony
Published: April 2021

Physical inactivity is a major national concern, particularly among individuals with chronic conditions and/or disabilities. There is an urgent need to devise practical and innovative fitness methods, designed and grounded in physical, psychological and social considerations that will effectively promote physical fitness participation among individuals of all age groups with chronic health condition(s) and/or disabilities. This research is dedicated to achieving Versatile, Individualized, and Generative ORchestrator (VIGOR) to motivate the movement of the people with limited mobility. Tai-Chi is a traditional mind–body wellness and healing art, and its clinical benefits have been well documented. This work presents a Tai-Chi based VIGOR under development. Through the use of Helping, Pushing and Coaching (HPC) functions by following Tai-Chi kinematics, the VIGOR system is designed to make engagement in physical activity an affordable, individually engaging, and enjoyable experience for individuals who live with mobility due to disease or injury. VIGOR consists of the following major modules: (1) seamless human-machine interaction based on the acquisition, transmission, and reconstruction of 4D data (XYZ plus somatosensory) using affordable I/O instruments such as Kinect, Sensor and Tactile actuator, and active-orthosis/exoskeleton; (2) processing and normalization of kinetic data; (3) Identification and grading of kinetics in real time; (4) adaptive virtual limb generation and its reconstruction on virtual reality (VR) or active-orthosis/exoskeleton; and (5) individualized physical activity choreography (i.e., creative movement design). Aiming at developing a deep-learning-enabled rehab and fitness modality through infusing the domain knowledge (physical therapy, medical anthropology, psychology, electrical engineering, bio-mechanics, and athletic aesthetics) into deep neural network, this work is transformative in that the technology can be applied to the broad research areas of intelligent systems, human-computer interaction, and cyber-physical human systems. The resulting VIGOR has significant potentials as both rehabilitative and fitness modalities and can be adapted to other movement modalities and chronic medical conditions (e.g., yoga and balance exercise; fibromyalgia, multiple sclerosis, Parkinson disease).
Neurosurgical Spasticity Treatment: From Lesion to Neuromodulation Procedures
Authors: Damián Carrillo-Ruíz José , Quetzalcoatl Beltran Jesús , Rodrigo Carrillo-Márquez José , Luis Navarro-Olvera José , García Luis , Villegas-López Francisco , Velasco Francisco
Published: April 2021

Spasticity is one of the most important and residual signs after pyramidal and para-pyramidal catastrophic lesions after diverse neurological insults, including stroke, brain and spine trauma and post-radiation; infection and immunological diseases affecting nervous system, between others. Spasticity is normally a compensatory motor mechanism that could ameliorate the patients´ disability. Nevertheless, disastrous spasticity is described when the extremities force is diminished in the affected limbs, or when is impossible to wake o to take objects, maximum when hand or foot deformity is exposed. The objective of this chapter is centered in the neurosurgical treatment of spasticity, including brain lesions with specific targets and the spine with its different modalities. This review shows not only the basic aspects in these techniques, but also the option of infusion pumps and deep brain stimulation. To close, a proposal is stablished to determinate the possible path to treat the spasticity in the future.
Advanced Modeling of Single Degree of Freedom System for Earthquake Ground Motion Using LabVIEW Software
Authors: Malathy R.B. , Bhat Govardhan , Dewangan U.K.
Published: April 2021

In this paper, the structural responses at discrete time steps are evaluated to understand the linear dynamics characteristics of a structural system using LabVIEW (Laboratory Virtual Instrument Engineering Workbench) tool. Time History Analysis (THA) which is an essential procedure to design a reliable structure when the structure is subjected to dynamic loading is taken into consideration for the study. Direct integration method was used to find out the dynamic response of the structure as it is applicable for both linear as well as nonlinear range. Block diagram that perform step-by-step integration to analyze the linear single degree of freedom (SDOF) system has been prepared in LabVIEW. The processing of data is carried out till the equilibrium is satisfied at all discrete time points within the interval of solution instead of any time t. Different ground motion time histories were considered for THA and responses of the SDOF system are evaluated. The results from LabVIEW were validated and the accuracy of the algorithms generated are discussed. It is observed that the accuracy and stability of the final solution depends on the variation of displacement, velocity and acceleration that is assumed in each step. Thus, LabVIEW workbench can therefore be recognized as an effective instrument in structural engineering owing to its fast sampling features.
Martian Moons and Space Transportation Using Chemical and Electric Propulsion Options
Authors: Palaszewski Bryan
Published: April 2021

Using chemical and nuclear electric propulsion for the exploration of the Martian moons will be investigated. Both oxygen/hydrogen chemical propulsion and nuclear electric propulsion with 500 kilowatt electric (kWe) to 10 megawatt electric (MWe) reactors will be assessed. The initial masses, propellant masses, and trip times for a variety of space vehicle payload masses will be compared. For high energy orbital transfer, the nuclear electric propulsion vehicles required a small fraction of the propellant mass over oxygen/hydrogen orbital transfer vehicles (OTVs). The moons, Phobos and Deimos, may hold resources for refueling future space vehicles. In-situ resource utilization (ISRU) can be a powerful method of reducing Earth dependence on space vehicle propellants, liquid water, and breathing gases. Historical studies have identified the potential of water in carbonaceous chondrites on the moons. The moon-derived propellants OTVs that move payloads between the moons and to other important operational Mars orbits. Also, the propellants have been suggested to support reusable Mars landers. To extract the water, the mined mass, its volume and the mining time were estimated. The water mass fraction may be as low as 2x10−4. Very large masses were needed to be extracted for up to 100 MT of water.