bluuebunny/crossref_metadata_2025 huggingface dataset:
Effects of oxy jet in cross-flow on the combustion instability and NOx emissions in lean premixed flame
Authors: Tao Chengfei , Zhou Hao
Published: May 2021

Combustion instability and NOx emission are crucial factors for modern gas turbine combustors, which seriously hampers the research and development of advanced combustors. To eliminate combustion instability and NOx emissions simultaneously, effects of the oxy (CO2/O2, N2/O2, Ar/O2, and He/O2) jet in cross-flow on combustion instability and NOx emissions are experimentally studied. In this research, the flow rate and oxygen ratio of the combustor are varied to evaluate the control effectiveness. Results denotes that all the four oxyfuel gas: CO2/O2, N2/O2, Ar/O2, and He/O2, could suppress combustion instability and NOx emissions. The CO2/O2 dilution can achieve a better damping results than the other three cases. There are peak values or lowest points of sound pressure amplitude as the parameter of oxy jet in cross-flow changes. Mode transition appears in both acoustic signal and CH* chemiluminescence of the flame. But the turning point of mode transition is different. Under the CO2/O2 cases, the NOx emission decreases from 22.3 ppm to 15.2 ppm, the damping ratio of NOx is 40.39%. The flame shape and length were changed under different jet in cross-flow dilutions. This research could promote the application of jet in cross-flow methods on combustion instability or pollutant emissions in gas turbines.
Estimation of the energy of detonation initiation in a hydrogen-oxygen mixture by a high-velocity projectile
Authors: Bedarev Igor , Temerbekov Valentin
Published: May 2021

The paper presents the results of a numerical study of the initiation of oblique detonation modes by a high velocity projectile moving in an argon-diluted hydrogen-oxygen mixture. The simulation of oblique detonation wave modes showed that calculated and experimental flow patterns agree. The calculated detonation cell size agreed with experimental data. For the initial pressure Pst = 121 kPa and Pst = 141 a series of calculations were carried out for a different projectile diameters. The detonation initiation energy was estimated, and the results were compared with theoretical models
Multi-objective calibration of the double-ellipsoid heat source model for GMAW process simulation
Authors: Bjelic Miso , Radicevic Branko , Kovanda Karel , Kolařík Ladislav , Petrovic Aleksandra
Published: May 2021

The scope of application of simulation models in welding is limited by the accuracy of their output results. This paper presents a calibration procedure for a 3-D quasi-stationary model of heat transfer for gas metal arc welding. The double-ellipsoid heat source used in this model has five input parameters whose value cannot be specified accurately. To estimate these values, we employed a multi-objective calibration procedure with two objective functions using the paretosearch optimization algorithm. Objective functions represented the error between simulated and experimentally observed values of penetration depth and weld bead width during gas metal arc welding of P355GH steel plates. All input parameters were assumed to be a power function of line energy. To reduce computational time, we replaced the numerical model with a response surface methodology metamodel based on an optimal set of simulation results from the numerical model. The results of the simulations based on calculated values of input parameters for the heat source model showed excellent matching with the experimental results.
DRUG FACTS, VALUES, AND THE MORNING-AFTER PILL
Authors: ChoGlueck Christopher
Published: May 2021

While the Value-Free Ideal of science has suffered compelling criticism, some advocates like Gregor Betz continue to argue that science policy advisors should avoid value judgments by hedging their hypotheses. This approach depends on a mistaken understanding of the relations between facts and values in regulatory science. My case study involves the morning-after pill Plan B and the “Drug Fact” that it “may” prevent implantation. I analyze the operative values, which I call zygote-centrism, responsible for this hedged drug label. Then, I explain my twofold account of value-ladenness, involving the constitutive role of value judgments in science and the social function of facts as political tools. Because this drug fact is ineliminably value-laden in both senses, I conclude that hedged hypotheses are not necessarily value-free.
Showcasing Audit Quality through Voluntary Public Disclosure of Audit Quality Indicators
Authors: Brown J. Owen , Popova Velina K.
Published: May 2021

Public accounting firms continuously invest significant resources into enhancing audit quality. In this paper, we summarize Brown and Popova's (2019) key findings related to public disclosure of audit quality indicators (AQIs) and discuss important implications for audit practitioners. Specifically, we discuss the current landscape of AQI disclosure from a regulatory and practitioner standpoint, and we provide recommendations for audit practitioners to consider when developing their own framework for AQI disclosure. Finally, we discuss how important stakeholder groups such as individual investors are influenced by AQI disclosures when making significant decisions concerning the audit firm (e.g., making auditor ratification decisions) and the audit client (e.g., making investment changes). The insights provided in our summary inform audit practitioners on how to showcase their audit quality enhancement efforts through voluntary AQI disclosure.
Tribbles Homolog 3 Mediates the Development and Progression of Diabetic Retinopathy
Authors: Pitale Priyamvada M. , Saltykova Irina V. , Adu-Agyeiwaah Yvonne , Calzi Sergio Li , Satoh Takashi , Akira Shizuo , Gorbatyuk Oleg , Boulton Michael E. , Pardue Machelle T. , Garvey W. Timothy , Athar Mohammad , Grant Maria B. , Gorbatyuk Marina S.
Published: May 2021

The current understanding of the molecular pathogenesis of diabetic retinopathy does not provide a mechanistic link between early molecular changes and the subsequent progression of the disease. In this study, we found that human diabetic retinas overexpressed TRIB3 and investigated the role of TRIB3 in diabetic retinal pathobiology in mice. We discovered that TRIB3 controlled major molecular events in early diabetic retinas via HIF1α-mediated regulation of retinal glucose flux, reprogramming cellular metabolism, and governing of inflammatory gene expression. These early molecular events further defined the development of neurovascular deficit observed in mice with diabetic retinopathy. TRIB3 ablation in the streptozotocin-induced mouse model led to significant retinal ganglion cell survival and functional restoration accompanied by a dramatic reduction in pericyte loss and acellular capillary formation. Under hypoxic conditions, TRIB3 contributed to advanced proliferative stages by significant upregulation of GFAP and VEGF expression, thus controlling gliosis and aberrant vascularization in oxygen-induced retinopathy mouse retinas. Overall, our data reveal that TRIB3 is a master regulator of diabetic retinal pathophysiology that may accelerate the onset and progression of diabetic retinopathy to proliferative stages in humans and present TRIB3 as a potentially novel therapeutic target for diabetic retinopathy.
Forhold ved skolen som påvirker skolelederens tilfredshet med jobben
Authors: Tiplic Dijana , Elstad Eyvind
Published: May 2021

School aspects that influence the principals’ job-satisfaction

This article aims to analyze how different school relations can influence principals’ job satisfaction. Our analysis is based on TALIS survey data from 162 Norwegian principals. We have used Structural Equation Modelling (SEM) to analyze statistical relations between several potential explaining variables and principals’ professional and individual job satisfaction. The main findings show that innovation support and stress are statistically related to principals’ job satisfaction with school. On the other hand, principals’ teaching support is not related to their job satisfaction with school. In addition, principals’ perception of stress is negatively related to several positively charged characteristics of school as an organization (innovation support, teaching support, and job satisfaction with school). Possible interpretations of the findings are that innovation support contributes to job satisfaction with school but that stress can be perceived as an inhibitory factor in principals’ work. This article focuses on stress that involves a work overload from following up on teachers’ professional development, having too much administrative work, as well as having extra work due to staff absence. This stress is primarily related to a connection between principals’ working capacity and their ambitions to execute their leadership goals. Implications for practice and further research are discussed.
Hva fremmer et innovativt miljø i skolen, og hvilken betydning har det for læreres undervisning?
Authors: Nilsen Trude , Scherer Ronny , Blömeke Sigrid
Published: May 2021

What encourages an innovative environment in schools and what does that imply for teaching?

An innovative environment is important for a school’s ability to adapt to societal changes and for students’ ability to cope with future society. It is therefore crucial to find out what promotes an innovative environment in a school and what consequences an innovative environment has for teaching and learning. Certain aspects of teaching are especially important for students to learn how to cope with a society where, for instance, critical thinking and problem solving are required and where diversity is increasing. Such teaching practices include cognitive activation and inclusive practices.

Using TALIS 2018, we employ two-level (teachers and schools) structural equation modelling to examine both direct and indirect effects of distributed leadership on teaching practices via an innovative environment. Results show that distributed leadership has a medium strong relationship to an innovative environment and that an innovative environment has a medium strong relationship to teaching practices. An innovative environment mediates the effect of distributed leadership on teaching practices.

Overall, our study has implications for policy and practice as it finds that school leaders who employ distributed leadership can help promote an innovative environment and that an innovative environment in turn may encourage the type of teaching students need to acquire skills that are important in the 21st century.
Hvor godt er lærere forberedt på den digitale hverdagen?
Authors: Gudmundsdottir Greta Björk , Björnsson Julius K.
Published: May 2021

How well are teachers prepared for digital technology in their work?

In this chapter, we report on questions in the TALIS 2018 survey concerning information and communication technology (ICT). Teachers were asked how they use digital technology for student activities, how prepared they are for digital practice, and how they assess their own need for continuous professional development (CDP) related to using digital technology in a classroom setting. This chapter is divided into two main parts. In the first part, we introduce previous research in the field of digital competence. We look at how the use of digital technology has evolved in Norwegian schools and how it has been supported by various educational reforms. We also refer to frameworks and various analytical tools to better understand students’ digital competence and teachers’ professional digital competence (PDC). Furthermore, we consider the role of teacher education in developing teachers’ and student teachers’ PDC. In the second part of the chapter, we present findings from TALIS 2018. Here we highlight teachers’ needs and participation in CPD, the preparations they have received in teacher education, and how they use digital technology to promote students’ learning and engagement in various teaching activities. Findings on classroom management in technology-savvy environments are presented, and the general use of ICT within a Nordic comparative perspective is discussed. In conclusion, we summarize the most important findings and raise issues in need of further research.
Adsorption Removal of Eriochrome Black T (EBT) and Rose Bengal (RB) from Aqueous Solutions Using Bio-Sorbents Combination
Authors:   Environmental Process Engineering Laboratory (LIPE), Department of Environmental Engineering, University Salah Boubnider, Constantine, Algeria, Benkartoussa Miada , Lehocine Mossaab Bencheikh ,   Environmental Process Engineering Laboratory (LIPE), Department of Environmental Engineering, University Salah Boubnider, Constantine, Algeria, Arris Sihem ,   Environmental Process Engineering Laboratory (LIPE), Department of Environmental Engineering, University Salah Boubnider, Constantine, Algeria, Meniai Hassen Abdeslam ,   Environmental Process Engineering Laboratory (LIPE), Department of Environmental Engineering, University Salah Boubnider, Constantine, Algeria
Published: May 2021

Adsorption of eriochrome black T (EBT) and rose bengal (RB) mixture from aqueous solutions was investigated using a mixture of low-cost biosorbents – 50 % of raw state potato peels and 50 % of raw state eggshell (M 50%). The surface charge distribution was determined by acid-base titration and the point of zero charge of the M 50% was found to be 8.5. The adsorbent materials were characterized by Fourier transform infrared spectroscopy and X-ray diffraction. It was confirmed that M 50% was mainly composed of calcite and cellulose. The effect of various operating parameters such as contact time, pH, temperature, etc., was studied. The amount of the adsorption decreased when solution pH increased. The pseudo-second order kinetic model provided the best fit to the experimental data for the adsorption of EBT and RB. The obtained thermodynamic parameters indicate that the adsorption process is endothermic one. According to the obtained results, the new biosorbent may be recommended as an industrial adsorbent for the treatment of effluents containing EBT and RB.
COVID-19 pandemic: The deadly respiratory disease of 21st century
Authors:   Sir Madan Lal Institute of Pharmacy, Etawah (U.P.) India, Jain Shweta , Jain Pankaj Kumar ,   Community Medicine, Uttar Pradesh University of Medical Sciences, Saifai, Etawah (U.P.) India, Yadav Ramakant ,   Department of Neurology, Uttar Pradesh University of Medical Sciences, Saifai, Etawah (U.P.) India, Jain Surendra Kumar ,   Sagar Institute of Research and Technology–Pharmacy,Bhopal (M.P.) India, Vaidya Ankur ,   Pharmacy College Saifai, Uttar Pradesh University of Medical Sciences, Saifai, Etawah (U.P.) India
Published: May 2021

The sudden outbreak of 2019 novel coronavirus (2019-nCoV) caused by the novel severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) originated from Wuhan, China. SARS-CoV-2 causes severe respiratory illness and becomes a major threat for humanity. Recently the entire scientist, researchers and physicians all over the countries focused to find the treatment of this pandemic disease. Numerous drugs and or vaccines have been trialed for prevention and treatment against 2019-nCoV but no therapy has been shown effective to date. Currently, numerous vaccines are under clinical investigation and mRNA-1273 vaccine (LNP- encapsulated mRNA vaccine encoding S protein) from Moderna is ahead. Although chloroquine, hydroxychloroquine, remdesivir and many other drugs had recommended against SARS-CoV-2, but still they are not the guarantee treatment of COVID-19. Recently, India, America, Russia and China introduced vaccines against COVID-19 in the market, however assurance of their 100% effectiveness are doubtful. The speed of daily new cases threatens the world and urges the scientist to crack this pandemic condition. KEYWORDS: 2019-nCoV; Chloroquine; COVID-19; Moderna; Respiratory disease; Remdesivir.
A brief Overview of a Fatal Disease Namely Cancer
Authors:   Department of Pharmacy, NGI College of Pharmacy NGI Campus, NH-58, Near Sardar Vallabh Bhai Patel Agriculture University, Modipuram, Meerut, Uttar Pradesh 250110 India, Maddheshiya Pradumn Kumar ,   Department of Pharmacy, NGI College of Pharmacy NGI Campus, NH-58, Near Sardar Vallabh Bhai Patel Agriculture University, Modipuram, Meerut, Uttar Pradesh 250110 India, Kumar Mukesh ,   Department of Pharmacy, Kharvel Subharti College of Pharmacy, Subhartipuram NH-58, Delhi-Haridwar Bypass Road, Meerut, Uttar Pradesh 250005 India
Published: May 2021

In today era cancer is a dangerous and terrible disease which cause due to rapid increment of unusual cells within the body. Cancer is the second influential cause of death in the world. It has become very difficult overcome cancerous disease. 10 million people died per year from cancer. The major cause of cancer is sudden change in DNA within the cells. As a result normal cells convert into cancerous cells which enhance the process of metastasis. There are some treatments of this dangerous disease but cancer treatments are so expensive not everyone and the common man can get. So, it’s our responsibility to spread awareness and convince people about such a disease. Its simple purpose is that after reading people should know more about it. And whatever, things are follow in our daily life to avoid cancer disease. Keywords: Neoplasm, Carcinoma, Leukemia, Chemotherapy, Radiation therapy.
Formulation and Evaluation of Curcumin Loaded Nanoliposome on Brain Targeted
Authors:   IIMT College of Pharmacy, IIMT University, Meerut, Kumari Jyoti , Chaurasia Lovely ,   IIMT College of Medical Sciences, IIMT University, Meerut
Published: May 2021

The present work aimed to produce Curcumin based nanoliposomes that nanoliposome can target the site via the brain in a controlled manner. Nanoliposomes are important in controlling the carriage; Curcumin which is an active constituent of curcuminoids thus also provides an effective treatment for the central nervous system and plays a crucial role. The interaction of the drug was ruled out by FT-IR studies and no incompatibility and lipids and surfactant. To optimize the formulation, factors affecting the physical appearance of Nanoliposomes were investigated. Curcumin-loaded Nanoliposomes were formulated using cholesterol by physical dispersion method and characterized for particle size, drug content, stability, production yield. Prepared nanoliposomes gave the better physical, morphological concerning the concentration of the lipids, surfactant, and ratio of lipid and surfactant. Six different formulations of Nanoliposomes F1-F6 were formulated to obtain the optimized formulation. The TEM (Transmission Electron Microscopy) of Nanoliposomes showed that they were rounded in shape and porous in texture. In-vitro drug release of formulation indicates that formulation F6 was selected as an optimized formulation for incorporation into the nanoliposomes among all the six formulations and liposome showed drug release in a controlled manner at the end of 10 hours. Keywords: Curcumin, Nanoliposomes, Physical Dispersion Method, Brain Targeting, Blood-Brain Barrier, Cholesterol, Bioavailability, In vitro Release.
Editorial
Authors: Editoriales de revista Coordinadores
Published: May 2021

Con mucha satisfacción nos encontramos hoy presentando un nuevo ejemplar de la revista Aletheia, otro número atravesado por los avatares de la vida cotidiana en pandemia que saben aletargar los tiempos editoriales. En vísperas a cumplirse un año de la propagación del virus, como revista hemos aprendido a sortear el desánimo de la distancia en el encuentro virtual y el trabajo colectivo y plural, una huella que caracteriza a Aletheia. En esta ocasión, el número 21 nos pone a prueba como Equipo Editorial y nos potencia como equipo de trabajo colaborativo, haciendo frente a la pasajera ausencia de la prosa de nuestra directora, Ana M. Barletta, y abriendo el juego a la construcción de una presentación editorial polifónica.
A poética da resistência nos poemas sobre a Guerrilha do Araguaia: o corpus do jornal Resistência
Authors: Melo Ivania , Sarmento-Pantoja Tânia
Published: May 2021

Este artículo analiza dos poemas que tienen como tema la Guerrilla del Araguaia, que integran un conjunto de textos poéticos publicados en el periódico Resistencia, en febrero de 1979, en Brasil. El análisis consideró los aspectos históricos relacionados al tema y la constatación de la cuestión central: qué elementos presentes en los poemas permiten ubicarlos dentro de una poética de la resistencia.
Basile, Teresa y Chiani, Miriam (comps.). (2020). Voces de la violencia: avatares del testimonio en el Cono Sur. La Plata: EDULP, 390 pp.
Authors: Codaro Laura
Published: May 2021

Reseña Basile, Teresa y Chiani, Miriam (comps.). (2020). Voces de la violencia: avatares del testimonio en el Cono Sur. La Plata: EDULP, 390 pp.
Políticas Públicas de Gênero para a Educação e a Educação Física no Brasil, na Argentina e no Uruguai
Authors: Da Silva Erineusa Maria , Wenetz Ileana , Alvarez Seara José Manuel , Scharagrodsky Pablo Ariel
Published: May 2021

O objetivo é analisar as políticas públicas de gênero na educação no Brasil, na Argentina e no Uruguai e, apresentar o percurso de criação dessas políticas nos três países, delinear trajetórias comuns e não comuns, conforme suas conjunturas específicas, bem como sua adoção/aplicação/interferência no campo da Educação Física. Este estudo comparativo, qualitativo, utilizou-se da revisão documental, de documentos oficiais e de matérias publicadas em jornais e sites para a coleta de dados referentes ao último quartel do século XX e primeiro do século XXI. Nas análises, apoiamo-nos em estudos feministas, de gênero e em políticas públicas. Concluímos que, embora a Argentina e o Uruguai se tenham antecipado ao Brasil na formulação de legislações para o enfrentamento da discriminação de gênero e sexo, os três países continuam a enfrentar dificuldades na implementação e efetivação dessas políticas nas duas áreas, especialmente na atualidade, tendo em vista a resistência de setores conservadores.
Espacio escolar y género. El caso del Departamento de Cultura Física de la Universidad Nacional de La Plata (1929-1946)
Authors: Kopelovich Pablo
Published: May 2021

El objetivo de este artículo es analizar el uso de espacios diferenciados para la práctica de ejercicios físicos entre 1929 y 1946, a cargo del Departamento de Cultura Física (DCF), por parte de los estudiantes varones del Colegio Nacional (CN) y estudiantes mujeres del Colegio Secundario de Señoritas (CSS), instituciones de enseñanza media de la Universidad Nacional de La Plata (UNLP). A partir de una metodología cualitativa se lleva a cabo un estudio de caso, utilizando variadas fuentes. Se encuentra que los varones ocuparon lugares abiertos, grandes, en el ámbito natural, con buenas condiciones edilicias, mientras que las mujeres lo hicieron en espacios cerrados, pequeños, dentro del colegio, con problemas edilicios. Concluimos que los espacios diferenciados contribuyeron a vincular a las mujeres al ámbito privado, y a actividades pasivas, estableciendo fines macropolíticos ligados a ser madre, y a relacionar a los hombres con el espacio público, emparentándolos con actividades que implicaban mayor actividad, responsabilidad y autonomía. El espacio fue parte de un currículum que sexualizó y generizó, estableciendo universos morales y kinéticos desiguales.
Sobre lágrimas, corpos e silêncios pedagógicos: transitando entre educação física escolar, sexualidades e gênero
Authors: Alves e Silva Marco Aurélio , Nicolino Aline
Published: May 2021

Este texto trata da objetificação do ‘corpo gay’ como diferente no contexto escolar a partir de experiências corporais vivenciadas nas séries iniciais do Ensino Fundamental, em aulas de Educação Física (EF), de uma escola particular de Goiás. Para isso, o texto divide-se em três momentos: a narrativa autobiográfica do vivido que, por sua vez, objetiva mostrar o quanto a corporeidade é uma aprendizagem coletiva e que a violência praticada pela direção, professora de EF e estudantes para significar o diferente constitui a própria condição de existência do normal; em segundo, um diálogo bibliográfico com teóricos, textos e pensamentos sobre os corpos, gêneros, sexualidades e suas diversidades; e, por último, evocando os dois anteriores, analisamos as impossibilidades nesse meio escolar. Compreendemos, com isso, que a produção do diferente na escola é uma forma de conhecimento e que o fato de não ter as temáticas gênero e sexualidade no currículo, sob a justificativa de pertencer ao âmbito privado-familiar, não impede que sejam ensinadas. Assim, ao ensinar o que não se reconhece como conhecimento, a escola negligencia humanidades e, ao mesmo tempo, não deixa de assumir a responsabilidade pedagógica que refuta e ignora. Identificamos, ao final, que as visibilidades de corporeidades emergentes não as tornam necessariamente mais compreensíveis e que uma prática pedagógica ampliada e comprometida com os direitos humanos pode possibilitar novas experimentações de existência, de vidas vivíveis.
Educación física y deporte: saberes corporales, género y colonialidad
Authors: Martins Fabián Horacio
Published: May 2021

El artículo toma como punto de partida un estudio previo vinculado a la selección de saberes deportivos a enseñar, en el área de la educación física; en escuelas secundarias de San Carlos de Bariloche. Describe los principales componentes que configuran la elaboración de un nuevo proyecto de investigación, orientado al análisis de las prácticas deportivas de alcance comunitario con participación juvenil y la problematización de las trayectorias estudiantiles junto a los equipos docentes. Dicho proyecto se enmarca dentro del enfoque interseccional y los estudios de las relaciones de poder bajo la tríada de opresión “raza-clase-género”. Tiene por objetivo analizar los mecanismos de división sexual y las características que presentan en la región; además de observar los componentes lúdicos. La propuesta de investigación de corte educativa colaborativa, pretende contribuir a la reflexividad desde un abordaje reflexivo y crítico acerca de los procesos de selección de saberes a enseñar. Dentro de un enfoque cualitativo de tipo descriptivo, se fijaron criterios para abarcar la heterogeneidad de la población en estudio, según la ubicación geográfica y el tipo de gestión. El mismo podrá complementarse con técnicas estandarizadas que responden al modelo cuantitativo según las necesidades del trabajo.
Los techos de cristal en los partidos políticos latinoamericanos
Authors:   Catedrática de Ciencia Política y de la Administración, Universidad Nacional de Educación a Distancia (UNED), Delgado Irene
Published: May 2021

Las cuotas de género han alterado sustancialmente la distribución de mujeres en los parlamentos de América Latina, así como las pautas de reclutamiento de los partidos. No obstante, aún existe un vacío en los análisis del impacto de este fenómeno en el interior de los partidos. La presente investigación analiza datos de la élite parlamentaria latinoamericana con el objetivo de prestar una especial atención a la valoración de las mujeres electas respecto de las dinámicas de equilibrio de género en el interior de sus partidos políticos. Se constata que existe un techo de cristal que impide que estas ocupen puestos de relevancia en la toma de decisiones dentro del partido, reduciéndose el marco de oportunidades para ascender dentro de la organización.
Veinte años de la agenda internacional sobre Mujeres, Paz y Seguridad (MPS)
Authors:   Profesora e investigadora, Departamento de Ciencia Política y de la Administración, y Hegoa, Instituto de Estudios sobre Desarrollo y Cooperación Internacional, Universidad del País Vasco (UPV/EHU)., Mujika Chao Itziar
Published: May 2021

Este artículo realiza un análisis crítico de la trayectoria de la agenda internacional sobre Mujeres, Paz y Seguridad (MPS), coincidiendo con el vigésimo aniversario de la adopción de la resolución 1325 del Consejo de Seguridad de Naciones Unidas. El texto recorre la trayectoria de la agenda MPS a través del examen de sus principales características, fortalezas, vacíos y debilidades. ¿Cuáles son las principales críticas que esta serie de medidas en la agenda MPS, así como su implementación, han recibido? La respuesta a esta pregunta habilita la posibilidad de vislumbrar las principales debilidades de la agenda, así como sus retos más importantes para el futuro.
El lugar de las mujeres en los partidos políticos de América Latina: el caso de Ecuador
Authors:   Investigadora, Consejo Nacional de Investigaciones Científicas y Técnicas, Instituto de Ciencias Humanas, Sociales y Ambientales (INCIHUSA CONICET) (Argentina), Accossatto Romina ,   investigadora predoctoral, Universidad de Buenos Aires.
Published: May 2021

En América Latina una de las barreras fundamentales para seguir avanzando en la efectiva representación paritaria son los partidos políticos. A partir de esta evidencia, este artículo se focaliza en el caso de Ecuador, un país que se ha constituido en vanguardia regional en materia jurídica vinculada a la paridad política, pero cuyos partidos, sin embargo, muestran importantes resistencias a implementar dichas normativas. El objetivo central que se plantea es identificar en qué medida los partidos y movimientos políticos de Ecuador promueven u obstaculizan la participación y representación política de las mujeres. Para ello, el trabajo se encuadra en un enfoque empírico-descriptivo centrado en la construcción de un índice que permite comparar las modalidades y estrategias que los partidos políticos despliegan para fomentar la igualdad entre hombres y mujeres.
La política chilena es y será cosa de mujeres
Authors:   Miembro del Instituto de Iberoamérica, Universidad de Salamanca, Pinget Batista Yasmin ,   investigadora predoctoral en Estudios Interdisciplinares de Género y políticas de igualdad, Universidad de Salamanca
Published: May 2021

Reseña de libro: Miranda Leibe, Lucía y Suárez-Cao, Julieta (eds.). La política siempre ha sido cosa de mujeres: elecciones y protagonistas en Chile y la región. FLACSO-Chile, 2018. 144 pp.
Superando las distancias: la política exterior de Argentina vista desde España
Authors:   Vicepresidente, Equipo Europa, Salgado Garrido Brayan , Lastres Velasco Aránzazu ,   Redactora, Opinión 20
Published: May 2021

Reseña de libro: Biderbost, Pablo. Política exterior de Argentina. Madrid. Universidad Pontificia de Comillas, 2020. 106 págs.
Un análisis crítico de las Relaciones Internacionales
Authors:   Profesora de Relaciones Internacionales, Universidad Complutense de Madrid, González del Miño Paloma
Published: May 2021

Reseña de libro: Barbé, Esther. Relaciones Internacionales. Tecnos, 2020, 404 págs.
¿Identidad de grupo, ideología o reconocimiento? El apoyo de los y las legisladoras a las cuotas de género en América Latina
Authors:   Investigador posdoctoral, Universidade Federal de Minas Gerais (Brasil)., Bohigues Asbel , Piscopo Jennifer M.
Published: May 2021

La adopción y mejora de las leyes de cuotas de género depende de las élites políticas, pero ¿qué legisladores y legisladoras creen que las cuotas son necesarias? Para responder a esta pregunta, se utilizan datos de encuestas a élites de 13 parlamentos latinoamericanos. Los resultados son inesperados, tanto a nivel nacional como de partido: la fuerza de las cuotas ya existentes no correlaciona exactamente con el apoyo a las cuotas, y los partidos políticos no mantienen actitudes coherentes al respecto. En el nivel individual, se identifican tres grupos favorables a las cuotas: las mujeres, la izquierda y quienes reconocen el problema de la desigualdad de género. Al comparar la importancia de estos tres grupos, se observa que las legisladoras siempre estarán más a favor que los legisladores, independientemente de la ideología y del grado de reconocimiento del problema.
Síndrome de Prune Belly em paciente escolar
Authors: Medeiros Júnior Fabiano César de , Oliveira Letícia Sousa , Silva Paula Barros de Lins e , Germano Bianca Caroline da Cunha , Silva Dany Geraldo Kramer Cavalcanti e
Published: May 2021

A síndrome de Prune Belly (SPB) é uma doença congênita rara (1:40.000 nascidos vivos) caracterizada por uma tríade de anomalias: ausência, deficiência ou hipoplasia da parede abdominal, criptorquidia bilateral e anormalidades do trato urinário. O diagnóstico pode ser realizado ainda no pré-natal, todavia, apresenta alta taxa de mortalidade perinatal. Assim, o presente estudo objetivou descrever um relato de caso sobre SPB em paciente escolar. VSSB, sexo masculino, diagnosticado com SPB. USG de 2º trimestre evidenciou feto polidrâmnio com alterações morfológicas. Com 38 semanas de gestação foi realizado parto cesáreo por evidência de oligoâmnio severo e má formação fetal. Ao nascimento, foi observado abdome em ameixa e criptorquidia bilateral, sugerindo SPB; a suspeita diagnóstica foi confirmada no 13º dia de vida. O paciente seguiu acompanhamento por equipe multiprofissional. Pelo quadro clínico, necessitou de várias internações ao longo da vida, falecendo na última, com 7 anos e 11 meses. Por conseguinte, é indubitável relatar a importância do pré-natal de qualidade no diagnóstico precoce das doenças congênitas e do acompanhamento multiprofissional. Ademais, a longitudinalidade e integralidade do cuidado se mostram como cruciais no aumento da sobrevida do paciente com qualidade.
Palavras-chave: Síndrome. Prune Belly. Relatos de casos.
Goal Orientations Predict Exercisers’ Effort and Enjoyment While Engaged in Exercise and Reasons for Using a Fitness Tracker
Authors: Easton Lauren , Fry Mary D. , Hogue Candace M. , Iwasaki Susumu
Published: May 2021

Fitness trackers (FTs) can help increase activity levels and decrease sedentary behavior. However, researchers have yet to examine whether individuals’ goal orientations influence physical activity behavior in response to FT use. This study examined whether goal orientations predicted participants’ effort and enjoyment while exercising and their reasons for using a FT. Participants (203 females, 57 males; Mage = 42.35 years) reported goal orientations, enjoyment and effort while exercising, and reasons for using an FT. Four stepwise linear regression analyses were calculated to assess the extent that goal orientations predicted effort and enjoyment while exercising and task- and ego-related reasons for using FTs. Both task and ego orientation scores positively predicted effort and enjoyment. Task orientation had a much greater influence than ego orientation over these motivational outcomes. Moreover, task orientation positively predicted task-related reasons for using a FT (e.g., “helps me strive to be my physical best”), while ego orientation positively predicted ego-related reasons for using a FT (e.g., “notifies me that I outperformed others”). Results suggest practitioners and FT manufacturers should consider promoting a task orientation (e.g., define success based on personal effort & improvement) to foster clients’ sustained motivation to engage in PA.
Perceived Etiology of Anti-Social Behavior Among Players and Spectators of Selected Football Clubs in Nigeria (PEABFC)
Authors: Babatunde Samson Olusola
Published: May 2021

Anti-social behavior at football contest is a well-recognized issue. Due to this fact, associations and government have devised variety of interventions and strategy characterized by high tension and tempo among players and spectators which usually generate disorderliness of varying intensify. This study focuses on investigation of etiological factors of anti-social behaviors among players and spectators of football clubs in Nigeria during matches, with a view to coming up with coherent strategies for its enervation. Self-development questionnaire tagged perceived etiology of antisocial behavior among football players and spectators of selected football clubs (SPEABFC) was used for data collection, with reliability value of 0.85. Two thousand seven hundred (2700) out of three thousand (3000) copies of questionnaire administered were retrieved and coded for analysis with adoption of percentages and chi-square x2 tool at 0.05 level at significant. The study copiously found that poor officiating, winning at all costs, conduct of coach and alcohol consumption are significant in causing anti-social behavior among players and spectators. Consequently, it is re-concluded among others that known troublemakers should be disallowed from entering the game venue, sale of alcohol be restricted to a place far from game site. The outcome is highly significant in view of the fact it might be helpful to scientifically develop appropriate strategies to control sale of drugs and alcohol at game site. The study is greatly insightful to sensitizes the management of football competitions to look inward more effective methods capable of making soccer context anti-behavior free. A adage says prevention is better than cure, the research is highly informative to authorities concerned with organization of football competitions map out preventive measures to unethical attitude by players, spectators as well fans for better attendance at game site which is likely to translate into making more profit for the organizers. An adequate provision for police and other security agents will go a long way to reduce anti-social behavior. We are now in the world of business geared towards profitability, any competition occasioned by riot and chaos is likely to negate this objective as attendance may reduce thereby drastically cutting the expected profit. The promoters of competition will be abreast this fact and develop remedies to counter it ahead at planning stage. The erring players should be sanctioned accordingly. The use of credible and competent officials with records of integrity and credibility will in part promote sanity during the matches.
Physical and Movement Skill Level of Pupils from the First Grade of Primary School in Svit in Comparison with National Research of Primary Schools
Authors: Doležajová Ladislava , Poništová Lenka , Mókusová Olympia
Published: May 2021

The aim of the work was to compare the level of somatic and selected motor abilities of pupils of the 1st year in Svit with a national research of primary schools. The goal was to choose boys for athletic training based on individual and overall physical performance. The parameters showing the bodily development of the probands were body height, body weight and BMI index. To determine the all-round readiness of students, we used a test set consisting of the following tests: maximum forward bend, endurance in pull-ups, long jump from standing position, shuttle run 4 x 10 m and endurance Beep test. We processed empirical data using statistical-mathematical characteristics. We used the Shapiro-Wilk test to calculate the normality of the data and then calculated the statistical significance of the mean values using the Parametric Unpaired T-test. We recorded significant differences at the 1% and 5% level of statistical significance when comparing the results of our groups with the national ones in individual motor tests: maximum forward bend, long jump from a place, shuttle run 4 x 10 m and endurance Beep test. Differences in somatic indicators and performance between Svit students were confirmed without statistical significance. In the end, we evaluated the level of performance of pupils according to the standards of the population on the basis of their achieved results. We recommended children who achieved the highest points of overall readiness for athletic preparations, as well as those who showed an above-average level of performance in individual tests.
Explanatory Learning Research: Problem-Based Learning or Project-Based Learning?
Authors: Naviri Sinta , Sumaryanti Sumaryanti , Paryadi Paryadi
Published: May 2021

Problems in learning are one of the obstacles to student’s success in understanding and achieving success. Learning problems also occur in physical education learning, the problems that have occurred in the last decade are caused by the individual students. To minimize and even overcome these learning problems an appropriate learning approach model is needed. In the last 5-10 years, the learning approach models that are often used are problem-based learning and project-based learning. This study aims to review and examine problem-based learning approaches and project-based learning approaches in designing and improving physical education learning. The literature review that will be discussed is about the characteristics, advantages, and disadvantages of each learning approach model. The results of the literature review are expected to be able to be used as a study or information that can be used as a theoretical basis for further research in the use of a learning approach model to complete or improve physical education learning including problem-based learning and project-based learning.
Assessment of Train Noise at Platforms in Underground Metro Stations
Authors: Younes Mohamed N. , Heikal Ali Z. , Kotb Akram S. , Zohny Haytham N.
Published: May 2021

Metro has become one of the most used means among public transit due to its advantages such as mass transit capacity, safety, fast speed, and comfort. Despite its benefits, workers and passengers ride the metro daily, and they are continuously being exposed to a high level of noise. Noise exposure has been related to various health-related issues. This paper presents an evaluation of the acoustic environment at the station’s platform and studies factors affecting the platform’s noise levels. Greater Cairo Metro Line 1, 2, and 3 have been selected as a case study. The result indicates that noise levels are unacceptable compared with the international standards of noise exposure as the highest measured noise level at station platforms was 93.93 dB(A). Regarding the rolling stocks type, the L

Aeq
was different from one type to another, with a range of 2.28 to 6.5 dB(A). The L

Aeq
on the underground platforms station was 11 dB(A) higher than on the surface stations regarding the station type. For underground stations, the L

Aeq
on curved platforms higher than the straight platforms when a train arrived, stop and go from the station with a range of 2.7 to 4.9 dB(A). Regarding the station platform dimension, the L

Aeq
on the underground platforms with a 5 m width is higher than the one with a 3 m width by 3 dB(A).
Characteristics of Hollow Compressed Earth Block Stabilized Using Cement, Lime, and Sodium Silicate
Authors: Edris Walid , Matalkah Faris , Rbabah Bara’ah , Sbaih Ahmad Abu , Hailat Reham
Published: May 2021

This research aims to produce a Compressed Earth Block (CEB) product using locally available soil collected from northern Jordan. The CEB mixture was further stabilized using Portland cement, lime, and sodium silicate. The research significance is based upon the urgent need of most developing countries (e.g. Jordan, Egypt…etc) to build more durable and low-cost houses by using locally available materials. As a result, CEB was identified as a cheap and environmentally friendly construction material. CEB specimens were thoroughly characterized by studying the mechanical properties and durability characteristics. Blocks of 30 x 15 x 8 cm with two holes of 7.5 cm in diameter have a potential for higher enduring, higher compressive strength, better thermal insulation, and lower production cost. Blocks were manufactured with an addition of 8 % for either Portland cement or lime, as well as 2 % of sodium silicate to the soil. The results showed that the addition of 8 % of cement to the CEB achieves satisfactory results in both mechanical and durability properties. Also, the addition of sodium silicate was found to enhance the early-age compressive strength however it affected negatively the durable properties of blocks by increasing the erosion rate and deterioration when exposed to water.
Determination of Road Bridge Load -Carrying Capacity
Authors: Vičan Josef , Odrobiňák Jaroslav , Gocál Jozef
Published: May 2021

In frame of global European standardization and as consequence of new knowledge concerning the existing bridge reliability, the need for revision of the Technological Standard No. 104 “Load-carrying capacity of road bridges and footbridges” [1] (hereinafter referred to as TS 104) had started up. In the first stage of the revision, the preparation and analysis in the form of Analysis Task (hereinafter referred to as AT) has been worked up by the collective of the Department of Structures and Bridges from the University of Zilina in cooperation with Slovak Road Administration (SRA), National Motorway Company (NMC) and other co-operators among academicians and designers. In the presented paper, the attention is paid to the general concept and basic assumptions of the AT and revised TS 104 for determining the road bridge load-carrying capacity.
Intangible assets and the efficiency of manufacturing firms in the age of digitalisation: the Russian case
Authors: Turovets Yulia
Published: May 2021

A wide consensus exists on the role of intangible assets in both developed and developing economies, especially now, with the new generation of information and communication technologies. Emerging economies generally demonstrate lower endowment with intangibles (Dutz et al., 2012), but follow the same positive patterns for long-run development. In Russia, the contribution of intangibles to growth is still modest, and its capacity to foster productivity has not been achieved. As previous studies showed, efficiency represents one of the main channels of total factor productivity growth. This paper studies the effects of intangibles on the efficiency of Russian manufacturing firms in 2009–2018. Considering the heterogeneity of sectors and firms, the stochastic frontier model is applied. In general, the impact of intangibles is positive but small and influenced by external shocks and structural features. The paper provides evidence on different contributions of intangibles to efficiency for high-tech and low-tech firms and its change over time. It contributes to the strand of literature regarding the technical efficiency measurement on the microlevel. On the practical side, the paper suggests an analytical framework for differentiated policy mechanisms to drive investments in intangibles, which are essential for current digital transformation.
Ensuring economic efficiency of flexible fixtures in multiproduct manufacturing
Authors: Ivanov Vitalii , Liaposhchenko Oleksandr , Denysenko Yuliia , Pavlenko Ivan
Published: May 2021

The first-priority directions for modern engineering, especially for multiproduct manufacturing, include the intensification of manufacturing processes, increasing the efficiency of technological equipment, and reducing the time required to implement technological solutions. Fixture design is a complicated and time-consuming process that requires considering many parameters of the closed-loop technological system “machine tool — fixture — cutting tool — workpiece”. One machined part can have several fixture layouts corresponding to all specified parameters; however, their effectiveness differs depending on production conditions. Search for an optimal fixture for specified production conditions is an essential stage of production planning. It has been proved that the efficiency of a manufacturing process should be assessed using single economic indicator — the cost of machining, which considers the costs of time, the total costs for process realisation, and a batch of parts. The paper aims to substantiate the efficiency of manufacturing processes in machining complex parts using flexible fixtures by developing a mathematical model that considers the cost of time, the cost of implementing the manufacturing process, and the batch value of parts production. This approach estimates the efficiency of manufacturing processes for machining complex parts and choosing the flexible fixture layout that corresponds to specific production conditions. It was proved that flexible fixtures could be effectively used for machining small batches of parts with frequent readjustments to new workpieces and short-term machining. A tendency has been established that the higher number of nomenclature of parts contributes to expanding the scope of the effective use of flexible fixtures.