bluuebunny/crossref_metadata_2025 huggingface dataset:
INTERNATIONAL LEGAL GUARANTEES OF THE STATE’S OBLIGATIONS TO ENSURE FREEDOM OF ENTERPRISE
Authors: Zadorozhnyi Bohdan
Published: January 2023

In the article it is determined that the system of international legal guarantees of the state’s obligations to ensure the freedom of entrepreneurial activity consists of such elements as the conclusion of international treaties by the state, the state’s membership in international organizations and the right of persons to apply to international courts. It has been established that in Ukraine, in fact, half of these international treaties have not an definite legal status, so government officials do not know how they should react to these acts: implement or ignore. It was established that the system of international treaties in Ukraine is undergoing active changes: some of them have been denounced; others – lost their validity due to the withdrawal of Ukraine from them; the third ones are «on pause» because they have no practical significance, so they are not used; the fourth - approved by the state and society, therefore concluded and ratified in accordance with the constitutionally defined procedure. The principle of freedom of entrepreneurship is regulated by EU legislation. This principle applies not only to persons who have the citizenship of one of the EU states, but also to citizens of other states, in particular, those who «have a permit to work in the territory of the member states». This principle actually ensures the equivalence of freedom of entrepreneurship for residents and non-residents of EU states. The principle of freedom of entrepreneurship is standardized by the legislation of Ukraine and the EU, however, neither international nor national legislation regulates a special mechanism for ensuring that the state fulfills its constitutional obligations in the field of ensuring freedom of entrepreneurial activity, which partially crush these obligations.

Key words: international law, international agreements, freedom of entrepreneurial activity, guarantees of freedom of entrepreneurial activity.
Perkembangan, Dinamika, dan Tren Penelitian Jurnalisme di Indonesia Periode 2001-2020
Authors: Adiprasetio Justito
Published: January 2023

After the authoritarian New Order regime collapsed, the study of journalism as a part of communication studies is projected will develop and helps rehabilitating the ecosystem of Indonesian media. However, there is no meta-analysis study that can prove how the development and dynamics of journalism research in Indonesia, especially after more than two decades of the collapse of the New Order. This study, by analyzing 641 journalism studies articles scattered in authoritative scientific publications on communication in Indonesia, in the span of two decades from January 2001 to December 2020, found that Indonesian journalism scholars were enriching literature reference, and were increasingly connected with other scholars. The findings obtained by this study directly refute many accusations that communication studies, especially in the scope of journalism studies in Indonesia, is dominated by positivistic paradigm. During the 2001- 2020 period, although there was an increase in publications that relied on a quantitative approach, it can be seen the dominance of the qualitative approach has not been deterred. The Ministry of Communication and Information Technology of Indonesia in the second position, as the institution with the highest number of scientific article writers after the Universitas Islam Bandung in first place, even surpassing Universitas Padjadjaran and Universitas Diponegoro shows that researchers from government institutions are one of the agents of production and reproduction of journalism knowledge and discourse in Indonesia. Based on keyword trends, the deliberative vision of journalistic research in Indonesia tends not to develop progressively.

Keywords: Indonesia, journalism studies, meta-analysis, journalism researc
Наступление беременности и роды у пациенток после коррекции расположения пронуклеусов в ооцитах с использованием ионофора кальция
Authors: Заставский И.А. , Яхьярова М.П. , Ким А.В.
Published: January 2023

Актуальность: Непрерывное совершенствование методов вспомогательных репродуктивных технологий (ВРТ) помогает преодолеть практически все виды бесплодия. В настоящее время в репродуктивной медицине широко используется интрацитоплазматическая инъекция сперматозоидов (ИКСИ), которая позволяет получить оплодотворенные ооциты в случаях тяжелого мужского или идиопатического бесплодия. Но даже зиготы с двумя пронуклеусами не всегда могут правильно развиваться и дойти до стадии бластоцисты. Важным критерием для образования нормальной бластоцисты является центральное расположение пронуклеусов в зиготе. Поиск методов, повышающих эффективность программ ВРТ, является одним из наиболее актуальных вопросов репродуктивной медицины.Цель исследования – изучить влияние ионофора кальция на расположение пронуклеусов в зиготах, развившихся из недостаточно активированных ооцитов, и частоту наступления беременности после переноса эмбрионов на стадии бластоцисты.Методы: В статье описаны 5 клинических случаев применения ионофора кальция после неудачных программ ИКСИ. Во всех случаях отмечалось нецентральное расположение пронуклеусов в предыдущих программах. Для коррекции расположения пронуклеусов в оплодотворенных ооцитах использовался ионофор кальция после метода ИКСИ. Результаты: Наступление клинической беременности отмечалось в 80% случаев. После использования ионофора кальция 83% ооцитов были нормально оплодотворены и имели центральное расположение пронуклеусов. Также было получено 40% бластоцист хорошего и отличного качества. У 4-х пациенток наблюдалась одноплодная беременность и на данный момент все беременности окончились родами. Исход программы у 5-й пациентки остался неизвестен.Заключение: Активация ооцитов ионофором кальция после ИКСИ может быть использована для коррекции локализации пронуклеусов, что может влиять на эффективность имплантации бластоцисты и, соответственно, на благополучный исход программы ВРТ.
Gestión administrativa y calidad educativa en una institución educativa de Ecuador
Authors: Vélez Ramírez Próspero Alberto , Rodríguez Yagual Cristhian Antonio , Belduma Suquilanda Rosa Marlene , Del Pezo González Grace Carolina , Calle Zuñiga Roberto Luis
Published: January 2023

El propósito de este artículo es ilustrar la relación de la gestión administrativa y la calidad educativa en una institución educativa ecuatoriana. se desarrolló desde el enfoque cuantitativo mediante su metodología de tipo no experimental de nivel correlacional. Tuvo como objetivo principal determinar el nivel de relación entre la gestión administrativa y la calidad educativa. Para recoger la información se utilizó los instrumentos de recolección de datos que fueron: el cuestionario, donde se permitió conocer el criterio del personal docente con respecto a la calidad educativa con sus dimensiones: planificación de acciones, organización de funciones. De la misma manera, se aplicó un segundo cuestionario para conocer la calidad educativa.
Herramientas digitales y aprendizaje de matemáticas en estudiantes de una institución educativa de Ecuador
Authors: Rodríguez Yagual Cristhian Antonio , De la Cruz Rodríguez Julián Dionicio , Vélez Ramírez Próspero Alberto , Belduma Suquilanda Rosa Marlene , Jumbo Balcazar Germania Lorena
Published: January 2023

El propósito de este artículo es definir la incidencia las herramientas digitales en el aprendizaje de las matemáticas en estudiantes de una institución educativa ecuatoriana. El estudio se llevó a cabo utilizando un método cuantitativo. El tipo de estudio dado fue correlacional, descriptivo. Se seleccionó una muestra censal de 20 estudiantes utilizando un modelo correlacional. El instrumento para la recolección de datos fue un cuestionario, de los cuales el primero enfrasca las herramientas digitales y el segundo el aprendizaje de las matemáticas. Para el análisis de los datos se utilizó la prueba estadística r de Pearson, que ayuda a determinar el efecto entre ambas variables y confirmar la hipótesis. Los resultados mostraron la incidencia de las herramientas digitales en un 40 por ciento de igual forma que el aprendizaje de las matemáticas. También establecieron que existe una clara correlación entre ambas variables.
Estrategias virtuales en el aprendizaje a distancia
Authors: Gonzales Gutierrez Edgard Wilfredo , Quiroga María A. , Vite Ayala Miguel , Paredes Judith
Published: January 2023

El presente trabajo de investigación titulado “Fortalecimiento de capacidades docentes en estrategias virtuales para el aprendizaje remoto en una institución educativa de Sullana 2022” El presente estudio es cualitativo y se enmarca en una investigación educacional de tipo aplicada y de diseño no experimental de corte transversal. Considerando la situación problemática se formuló la interrogante ¿Cómo fortalecer las capacidades docentes en estrategias virtuales para mejorar el aprendizaje remoto en una institución educativa de Sullana, 2022?  Resaltando que una de las tendencias de la nueva educación, es el uso de las Tecnologías de la Información y comunicación para gerenciar los aprendizajes en los estudiantes, ya que es una estrategia de enseñanza - aprendizaje remoto no presencial, que constituyen un paso muy avanzado en la evolución de técnicas tales como la enseñanza virtual y utilización de métodos audiovisuales (software, televisión interactiva, tableros digitales, radio, etc.) y herramientas virtuales multicanal. Sin embargo, se puede evidenciar que muchos de los docentes que participan en esta estrategia de aprendizaje remoto, aún presentan dificultad para poner en práctica esta propuesta de estudio y por ende brindar un servicio de calidad a nuestros estudiantes proponiendo el desarrollo de estrategias virtuales para lograr mejores aprendizajes de manera eficiente y autónoma. Se planteo como objetivo principal elaborar una propuesta que permita el fortalecimiento de capacidades docentes en estrategias virtuales que contribuyan en el aprendizaje remoto en una institución educativa de Sullana 2022, la misma que se desarrollara a través de talleres interactivos con docentes de aula de manera teórico – practico y semipresencial.
Factores socioculturales y su incidencia en la gestión educativa en la provincia de Sánchez Carrión, 2022
Authors: Reyes Avalos Laura Lizet
Published: January 2023

Fundamento: los factores socioculturales tienen implicaciones en la gestión educativa, ante esta situación urge tomar medidas respecto a la adquisición de disposiciones para que se concreticen los objetivos del desarrollo sostenible.

Objetivo: determinar la incidencia de los factores socioculturales en la gestión educativa en la provincia de Sánchez Carrión en el año 2022.

Métodos: investigación correlacional causal, de muestra probabilística y consta de 308 docentes de la provincia Sánchez Carrión, región La Libertad, Perú en el año 2022, aplicando un cuestionario de factores socioculturales, y un cuestionario de gestión educativa, ambos aprobados por constructo y confiabilidad.

Resultados: se evidenció que el nivel de significancia calculada es de 0.000, dicho valor es menor a 0.05, lo cual admite que existe una relación causal, es decir los factores socioculturales inciden en la gestión educativa de la provincia de Sánchez Carrión, 2022.

Conclusión: Se logró demostrar que existe incidencia media entre los factores socioculturales en la gestión educativa de la provincia de Sánchez Carrión, 2022 (Rho = 0,687, p= 0.000, alfa = 0.05).
Industria 5.0, revisión del pasado y futuro de la producción y la industria
Authors: Travez Tipan Andrea Valeria , Villafuerte Garzon Cristian Moises
Published: January 2023

En el presente trabajo se realiza un abordaje documental sobre la emergente aparición de la industria 5.0, desde una perspectiva del desarrollo social y tecnológico que ha tenido la industria gracias a la incorporación del internet de las cosas (IoT), la inteligencia artificial y otros elementos tecnológicos, a fin de determinar la conceptualización de la nueva tendencia llamada Industria 5.0. Para lo cual se ha realizado una revisión sistemática de 48 fuentes de información documental a través de criterios búsqueda y descriptores que permitieron establecer datos inéditos sobre la industria 5.0.
Hacia la enseñanza y aprendizaje de las ciencias sociales desde una perspectiva interdisciplinar e intercultural en niños con necesidades educativas especiales
Authors: Calapucha Tanguila Ruth Germania
Published: January 2023

La presente investigación tiene como finalidad dar a conocer la importancia de la enseñanza contextualizada de la Ciencias Sociales en los estudiantes con Necesidades Educativas Especiales. Se trabaja desde el entorno del estudiante, potenciando y fortaleciendo los factores culturales en cada uno de los hogares y familias. Se aplica el diseño etnográfico con el enfoque cualitativo, mismo que permite describir, analizar e interpretar los resultados del objeto estudiado. Asimismo, para la recolección de información se lleva a cabo el uso de entrevistas y diarios de campo, para concretar la investigación sobre las manifestaciones culturales y maneras de enseñar de forma integral e interdisciplinar. Del mismo modo, mediante la aplicación de la propuesta, plan de clase, a más del fortalecimiento del área asignada, se promueve el reconocimiento de las distintas cosmovisiones y formas de convivencia comunitaria, en la que la reciprocidad de los diferentes actores inmiscuidos toma relevancia como parte indispensable de la autodefinición cultural del estudiante. De esta manera, se genera una clase anímica y enriquecedora de conocimiento y saber ancestral. Finalmente, esta propuesta coadyuva a definir la auto identificación de los estudiantes, la comunicación artística, expresión de emociones, sentimientos, pensamientos y la apreciación del carácter sociocultural e interdisciplinar dentro y fuera de las aulas de clase. A su vez, predomina una población de aprendizaje práctico y dinámico sin limitar las capacidades, permitiendo la interrelación armoniosa con las diferentes epistemologías, la inclusión social y su autodeterminación personal.
La Influencia de la teleducación de emergencia en la autoestima profesional de los estudiantes egresados de la carrera de pedagogía en una universidad de Quito en el año 2022
Authors: Baquero Adriano Jessica Lizbeth , López Pérez Doren Miguel , Morales Fonseca Cristhian Fabricio , Arias Iturralde Maria Cristina
Published: January 2023

La adopción de una modalidad virtual imprevista afectó de varias formas a los estudiantes universitarios que finalizaron su proceso de formación durante el período de confinamiento por pandemia de COVID-19, dicho escenario tuvo un impacto significativo en la autoestima profesional de los nuevos egresados pues una gran parte de ellos poseen la idea de no contar con las habilidades necesarias para hacer frente a la presencialidad, es debido a esto que la indagación en dicha temática fue pertinente. La metodología utilizada fue de carácter mixto, teniendo como instrumento cualitativo a la entrevista semiestructurada y al “Inventario de Autoestima de Stanley Coopersmith” cómo instrumento cuantitativo. Los resultados de las entrevistas demostraron que un porcentaje significativo de los participantes consideró que su autoestima profesional fue afectada por el confinamiento, esto se apoya en los resultados obtenidos por la escala de autoestima pues el nivel predominante del área social fue el medio bajo; gracias a ambos resultados se puede afirmar que la autoestima profesional de más de la mitad de la población se vio afectada, teniendo como elemento principal la percepción de poseer una limitada capacidad para manejar un salón de clases dentro de la presencialidad.
Estrategias de afrontamiento ante la incertidumbre laboral en docentes de una institución privada
Authors: Zamorano-Espero Jesús Antonio , Herrera-Paredes José Manuel , Contreras de la Fuente Hilda Saray
Published: January 2023

Objetivo: Evaluar el efecto de las estrategias de afrontamiento para disminuir la incertidumbre laboral en docentes de una institución privada. Metodología: Estudio cuantitativo, descriptivo comparativo y diseño pre-experimental. Se utilizó una cédula exprofesa de Datos Personales, la Escala de Incertidumbre laboral Job Insecurity (JIS-8), y la Escala de Five Faces of Mindfulness (FFMQ). Resultados: n= 6 participantes del sexo femenino (100%) con 35.16 + 16.31 años. Respecto a la incertidumbre laboral se mostraron mejores resultados en la segunda medición en comparación con la primera, en los ítems: posibilidad de perder el empleo y mantener el empleo (33.3% vs 50%); futuro incierto y continuar con su empleo (33.0% vs 66.7%). En la primera medición el 66.7% manifestaron conocer que es la incertidumbre, aumentando al 100% en segunda medición, lo mismo sucedió en las consecuencias de la incertidumbre (50% vs 100%) y haber escuchado hablar de estrategias de afrontamiento (0% vs 83.3%). Conclusiones: Las estrategias de afrontamiento a través de las técnicas de respiración, relajación y mindfulness favorecieron la disminución de la incertidumbre laboral en los docentes, comprobando la aplicabilidade de la teoría de la incertidumbre frente a la enfermedad de Merle Mishel a través de conceptos centrales adaptados en este estudio.
Pessoas inteligentes e os esportes radicais
Authors: De Abreu Agrela Rodrigues Dr. Fabiano
Published: January 2023

A inteligência é caraterizada como a “capacidade de extrair informações, aprender com a experiência, adaptar-se ao ambiente, compreender e utilizar corretamente o pensamento e a razão”. Compreende-se “esportes radicais” como práticas de esporte com alto grau de risco físico ou de perigo que eleva a adrenalina do corpo por motivo de condições intensas de velocidade, altura e/ou outros fatores. Sendo assim, esse artigo objetiva compreender a relação de indivíduos inteligentes e aqueles que gostam de praticar esportes radicais por meio de uma revisão de literatura, realizada nas seguintes bases de dados: SciELO, PubMed PsycINFO e Science Direct. Em geral, os esportes classificados como radicais ou de aventura são considerados de grande risco, isso porque há chances maiores, do que nos demais esportes, de ocorrer algum acidente, podendo ser até fatal.
La huerta escolar: estrategia para fortalecer la seguridad alimentaria, Municipio de Popayán, Cauca
Authors: Llanos Rodríguez Audelia , González Avellaneda Efraín
Published: January 2023

EL huerto escolar se onsidera un especio natural para organizar actividades de sembrado y cuidado de los cultivos, en las zonas rurales la pertinencia de las actividades agrícolas es una necesidad para obtener alimentos y producirlos para obtener beneficios económicos, sin embargo estas prácticas se han perdido y se observan una problemática alimentaria que ocasiona desnutrición en muchas comunidades colombianas.  En torno a esta temática la presente investigación centró el objetivo general en implementar la huerta escolar como estrategia para fortalecer la seguridad alimentaria de estudiantes del Grado 9 de la Institución Educativa La Laguna Dinde, Corregimiento de Cajibio Municipio de Popayán Cauca. Se enmarcó dentro del enfoque cuantitativo con alcance descriptivo y proyectivo, dado a que se derivó una propuesta educativa, bajo un diseño no experimental, de campo y transeccional. A una muestra de 17 estudiantes de la institución Se utilizaron entre las técnicas e instrumento de recolección de información; la observación y la encuesta, para la cual se diseñaron dos cuestionarios con escalamiento de Likert, estos instrumentos se sometieron a la validación de tres expertos y se les determinó confiabilidad alfa Cronbach cuyos valores fueron 0,72 y 0,66 respectivamente. Los resultados de la investigación revelaron que la dimensión práctica de la huerta escolar, el indicador interés ecológico (4,2), mientras en lo relativo a las formas de cultivar (1,8) y organización de la huerta escolar (13), poca y muy poca presencia, por otro lado, la seguridad alimentaria se evidenció que en la localidad una alta disponibilidad de alimentos (3,7), y mediana presencia en la accesibilidad (3,2) y demanda de alimentos (3,3). En las actividades de interacción y participación (4,7), seguidas de las experimentales (4,7) y las conceptuales (4,3). Se concluyó las actividades de aprendizaje inherentes al desarrollo de la huerta escolar son convenientes para la construcción de conocimiento sobre de la huerta, la comprensión de la causa y los efectos de los fenómenos en el arte cultivar, las posibilidades de aplicar el método científico a toda vez que se ponen en práctica valores de solidaridad, trabajo en equipo, el intercambio de información en el que se transmite conocimiento y forma valores ambientales en pro de la seguridad alimentaria en al zona.
STUDY OF STATUS OF SCIENCE KIT IN UPPER PRIMARY SCHOOLS OF VADODARA CITY
Authors: Dhimmar Shefali Jashvantbhai , Patel R.C.
Published: January 2023

In the present study the investigators made an attempt to study the status of science kit which is developed and provided by the NCERT for upper primary schools in Vadodara city. The major objectives were to study the availability, relevance and usability of the science kit. Total 35 schools, 35 teachers and 175 students were taken as representative sample of the whole population. Cluster sampling technique was adopted for selection of science teachers. For selecting the schools simple random sampling was adopted. Questionnaire, Focused group discussion and observation schedule used for collecting the data. The study revealed that mostly all schools have science kit. All the science teachers believed that science kit is relevant with respect to and age level of the students. The study also revealed that there was something lacking which did not allow the proper use of science kit by science teachers.
Membaca Kebijakan Hukum dalam Pemenuhan Hak atas Lingkungan yang Bersih, Sehat, dan Berkelanjutan Sebagai Hak Asasi Manusia Universal
Authors: Raseukiy Sayyidatiihayaa Afra Geubrina
Published: January 2023

Artikel ini akan membahas mengenai konsekuensi Indonesia sebagai negara yang mengikatkan komitmen pengakuan lingkungan yang sehat, bersih, dan berkelanjutan sebagai hak asasi manusia universal sebagaimana tertuang dalam Resolusi PBB A/76/L75. Penulis melihat bahwa komitmen ini tidak dapat berhenti hanya pada “political will” negara untuk melaksanakannya, sebagaimana dokumen hukum lingkungan internasional lain. Di tambah, kondisi politik Indonesia yang diduduki oleh sebagian besar oligarki membuat sangat berbahaya meletakkan penjaminan hak asasi manusia universal kepada “political will” pejabat publik. Dengan memperbandingan langkah aktual dan strategis yang dilakukan Chile untuk menyelenggarakan pemenuhan hak atas lingkungan hidup, penulis merasa Indonesia benar-benar harus membentuk hukum yang membatasi kehendak politik penguasa sebagai instrumen tunggal penjagaan hak asasi manusia di Indonesia.
NT - 61 - Dinte - Brasil : perdendo fôlego no grupo dos emergentes ?
Authors: Baumann Renato
Published: January 2023

Este estudo é composto por cinco seções, contando com a introdução. A seção 2 mostra o grau de arbitrariedade na seleção de países a serem considerados como economias emergentes e específica o critério usado aqui na seleção de outras nove economias, além da brasileira. A seção 3 traz um conjunto de indicadores do desempenho recente da economia brasileira, em comparação seja às demais economias emergentes consideradas, seja às economias de alta renda. A seção 4 discute o potencial de desempenho da economia brasileira em comparação a outros países emergentes, no que diz respeito à importância relativa do capital humano no estoque de riqueza nacional.
NT - 59 - Diest - Imputação da informação de raça / cor na Rais para o setor público brasileiro
Authors: Silveira Leonardo
Published: January 2023

Esta nota propõe uma estratégia para contornar essa a de dados raciais na Rais, mediante registros prévios dos trabalhadores e imputação por meio de probabilidade. Além disso, esse processo é descrito e são realizadas comparações entre a Rais, o Sistema Integrado de Administração de Pessoal (Siape) e a Pesquisa Nacional por Amostra de Domicílios (PNAD) Contínua.
NT - 36 - Dirur - Principais conquistas do Plano ABC e desafios do Plano ABC+
Authors: Conceição Júnia Cristina Péres Rodrigues da
Published: January 2023

Esta nota técnica tem como finalidade mostrar, a partir da análise de estudos técnicos sobre o Plano ABC, quais foram as principais conquistas e quais são os principais desafios que ainda existem para que os objetivos iniciais do plano sejam alcançados. Nesse sentido, o trabalho está organizado da seguinte forma, além da introdução: na seção 2, é feita uma descrição do Plano ABC e de seus principais componentes, com destaque especial ao Programa ABC. Em seguida, na seção 3, são analisados alguns estudos sobre o Plano ABC na tentativa de identificar as principais lacunas ainda existentes. Por sua vez, a seção 4 apresenta o Plano ABC+, que tem como foco uma abordagem integrada da paisagem das áreas produtivas. Finalmente, na seção 5, são apresentadas as principais conclusões e propostas para estudos futuros.
NT - 100 - Diset - Desempenho produtivo da indústria brasileira durante o primeiro semestre de 2021
Authors: Bahia Luiz Dias
Published: January 2023

Descreve e analisa setorialmente o comportamento produtivo da indústria de transformação brasileira durante o primeiro semestre de 2021.
NT - 101 - Desempenho produtivo da indústria brasileira durante o terceiro trimestre de 2021
Authors: Bahia Luiz Dias
Published: January 2023

Descreve e analisa setorialmente o comportamento produtivo da indústria de transformação brasileira durante o terceiro trimestre de 2021.
NT - 102 - Diset - Preço do carbono para projetos de investimentos de infraestrutura no Brasil
Authors: Campoli Jessica Suarez , Feijó Janaína Rodrigues
Published: January 2023

Este trabalho tem como objetivo obter uma estimativa para o preço do carbono emitido na atmosfera. Para avaliação dos impactos de um projeto de investimento sobre o bem-estar da população é necessário que as diferentes consequências desse projeto sejam expressas em uma métrica comum, usualmente uma métrica monetária. No caso dos impactos socioambientais, a ausência de mercados formais que os valorem demanda que alguma forma de apreçamento seja adotada para valorar esses recursos e assim inseri-los em análise custo-benefício (ACB).
TN - 1 - Dinte - Assessing the effects of a free trade agreement between Brazil and India : a general equilibrium approach
Authors: Ribeiro Fernando J.
Published: January 2023

O objetivo deste artigo é avaliar os possíveis impactos econômicos de um acordo de livre comércio entre Índia e Brasil (e também seus parceiros do Mercosul), usando um modelo de equilíbrio geral computável baseado em Base de dados GTAP, versão 10.
COMPARATIVE ANALYSIS ON INTERNATIONAL CONSTRUCTION AND DEMOLITION WASTE MANAGEMENT POLICIES AND LAWS FOR POLICY MAKERS IN CHINA
Authors: Ma Mingxue , Tam Vivian Wy , Le Khoa N , Butera Anthony , Li Wengui , Wang Xiangyu
Published: January 2023

In the current age of enhanced environmental awareness, transformation to sustainable management in the construction sector is needed. China currently produces the largest amount of construction and demolition (C&D) waste around the world, but the average recovery rate of the waste was only about 5% in 2017. In order to investigate problems in current C&D waste management in China, a cross-national comparative analysis is conducted among China and seven selected countries (Japan, South Korea, Germany, Italy, Austria, the Netherlands and the United Kingdom), to compare legal texts of national policies and laws which relate to C&D waste management and are currently being used. Through the comparison, problems in management of C&D waste in China are investigated. The problems could be concluded to: (a) inadequate guidance on recycling, (b) lack of market incentives in utilising recycled materials, (c) incomplete knowledge of stakeholders’ responsibilities, (d) lack of penalty for other stakeholders, and (e) inefficient supervision system. By understanding these problems, this paper further provides recommendations to enhance the performance of C&D waste management in China.
RESOURCE LEVELLING IN REPETITIVE CONSTRUCTION PROJECTS WITH INTERRUPTIONS: AN INTEGRATED APPROACH
Authors: Dai Guyu , Liao Mingjuan , Zhang Renqian
Published: January 2023

Despite the significance of resource levelling, project managers lack various ways to smooth resource usage fluctuation of a repetitive construction project besides changing resource usage. Tolerating interruptions is an effective way to provide flexibility for a schedule but is ignored when solving resource levelling problems. Therefore, this paper investigates the impacts of interruptions on resource usage fluctuation and develops an integrated approach that simultaneously integrates two scheduling adjusting processes: changing resource usage and tolerating interruptions. In this paper, two interruption conditions are proposed to identify which activities are suitable to be interrupted for smoothing resource usage fluctuation. The traditional resource levelling model is modified to a new scheduling model by incorporating interruptions. A two-stage GA-based scheduling algorithm is developed by integrating changing resource usage and tolerating interruptions. A commonly used pipeline project is adopted to illustrate the steps of the proposed approach and demonstrate its effectiveness and superiority through comparison with previous studies. A large-scale project further verifies the usability of the proposed approach. The results confirmed the feasibility to smooth resource usage fluctuation by interruptions, and the integrated approach can achieve a more competitive resource levelling result.
ANALYSIS OF LABOR RESOURCES WASTAGE IN CHINA’S REAL ESTATE BROKERAGE: FROM THE PERSPECTIVE OF OPPORTUNITY COSTS
Authors: Zhao Qiuhong , Ding Mingrui , Wu Chengfeng , Li Yashuai
Published: January 2023

Real estate brokerage has experienced the rapid growth over the past two decades in China, with a significant increase of employees. In particular, in the megacities like Beijing, the growth of employees exceeds the growth of real estate transaction volume. This may lead to the wastage of labor resources. In this regard, the optimal employee size (OES) in China’s real estate brokerage is proposed from the perspective of opportunity costs, which include both under-size and over-size costs. In the proposed OES models, a real estate brokerage firm makes the optimal decisions of number of employees by minimizing expected opportunity costs. In addition, an iterative algorithm is employed to obtain the optimal employee size in different scenarios. The result reveals that high profit gained from the business does attract more employees than what is needed. By addressing various scenarios based on the game model, it is found that asymmetric competition, the increase of market participants, and demand fluctuations also contribute to the labor resources wastage in real estate brokerage industry. The theoretical analysis results are verified by taking Beijing as the case study. Finally, suggestions for reducing labor resources wastage in real estate brokerage of China are provided.
Radio and γ-ray Evidence for the Supernova Origin of High-velocity Cloud Complex M
Authors: Schmelz J. T. , Verschuur G. L.
Published: January 2023

Using λ21 cm galactic neutral hydrogen data from the HI4PI survey and 0.75–30 MeV γ-ray emission from the Imaging Compton Telescope, we have searched for the origin event that accelerated high-velocity cloud Complex M. Radio plots of l − b, l − v, and b − v show a cavity centered at (l, b) ∼ (150°, 50.°) and extending about ±33°. The best view of the cavity is at a velocity of −25 km s−1, which shows a circular cross section on the back (receding) face. Complex M, at −85 km s−1, is on the front (approaching) face. The γ-ray emission reveals several minima, the largest centered at (l, b) ∼(150°, 50.°) and coincident with the position and extent of the cavity seen in the radio data. Using the known distance to Complex M and assuming that the cavity is spherical, we can bootstrap the distance to the original, explosive source of the cavity D = 307 pc, calculate the radius of the cavity R = 166 pc, and approximate the expansion velocity V

E
≈ 40 km s−1 of the cavity. The total energy of the expanding cavity is 3.0 ± 1.0 × 1050 erg, well within the range of a single supernova. These results indicate that this explosion took place about four million years ago. As the blast wave from this supernova propagated outwards, it began to sweep up interstellar gas and carved out the Local Chimney, a low-density extension of the Local Bubble that reaches into the galactic halo.
Simulating Hydrodynamics in Cosmology with CRK-HACC
Authors: Frontiere Nicholas , Emberson J. D. , Buehlmann Michael , Adamo Joseph , Habib Salman , Heitmann Katrin , Faucher-Giguère Claude-André
Published: January 2023

We introduce CRK-HACC, an extension of the Hardware/Hybrid Accelerated Cosmology Code (HACC), to resolve gas hydrodynamics in large-scale structure formation simulations of the universe. The new framework couples the HACC gravitational N-body solver with a modern smoothed-particle hydrodynamics (SPH) approach called conservative reproducing kernel SPH (CRKSPH). CRKSPH utilizes smoothing functions that exactly interpolate linear fields while manifestly preserving conservation laws (momentum, mass, and energy). The CRKSPH method has been incorporated to accurately model baryonic effects in cosmology simulations—an important addition targeting the generation of precise synthetic sky predictions for upcoming observational surveys. CRK-HACC inherits the codesign strategies of the HACC solver and is built to run on modern GPU-accelerated supercomputers. In this work, we summarize the primary solver components and present a number of standard validation tests to demonstrate code accuracy, including idealized hydrodynamic and cosmological setups, as well as self-similarity measurements.
Electrostatic Repulsion of Dust from Planetary Surfaces
Authors: Onyeagusi F. Chioma , Jungmann Felix , Teiser Jens , Wurm Gerhard
Published: January 2023

Surfaces of planetary bodies can have strong electric fields, subjecting conductive grains to repulsive electrostatic forces. This has been proposed as a mechanism to eject grains from the ground. To quantify this process, we study millimeter-sized basalt aggregates consisting of micrometer constituents exposed to an electric field in drop-tower experiments. The dust aggregates acquire high charges on subsecond timescales while sticking to the electrodes according to the field polarity. Charging at the electrodes results in a repulsive (lifting) force and continues until repulsion overcomes adhesion and particles are lifted, moving toward the opposite electrode. Some aggregates remain attached, which is consistent with a maximum charge limit being reached, providing an electrostatic force too small to counteract adhesion. All observations are in agreement with a model of moderately conductive grains with a small but varying number of adhesive contacts to the electrodes. This supports the idea that on planetary surfaces with atmospheres, electrostatic repulsion can significantly contribute to airborne dust and sand, i.e., decrease the threshold wind speed that is required for saltation and increase the particle flux as suggested before.
Probing Ganymede’s Atmosphere with HST Lyα Images in Transit of Jupiter
Authors: Roth Lorenz , Marchesini Gregorio , Becker Tracy M. , Hoeijmakers H. Jens , Molyneux Philippa M. , Retherford Kurt D. , Saur Joachim , Carberry Mogan Shane R. , Szalay Jamey R.
Published: January 2023

We report results from far-ultraviolet observations by the Hubble Space Telescope of Jupiter’s largest moon, Ganymede, transiting across the planet’s dayside hemisphere. Within a targeted campaign on 2021 September 9 two exposures were taken during one transit passage to probe for attenuation of Jupiter's hydrogen Lyα dayglow above the moon limb. The background dayglow is slightly attenuated over an extended region around Ganymede, with stronger attenuation in the second exposure, when Ganymede was near the planet’s center. In the first exposure, when the moon was closer to Jupiter’s limb, the effects from the Ganymede corona are hardly detectable, likely because the Jovian Lyα dayglow is spectrally broader and less intense at this viewing geometry. The obtained vertical H column densities of around (1–2) × 1012 cm−2 are consistent with previous results. Constraining angular variability around Ganymede’s disk, we derive an upper limit on a local H2O column density of (2–3) × 1016 cm−2, such as could arise from outgassing plumes in regions near the observed moon limb.
Astragalus bashanensis (Leguminosae), a new species from Central China
Authors: Xu Song-Zhi , Gan Qi-Liang , Li Xin-Wei
Published: January 2023

A new species Astragalus bashanensis, from western Hubei Province, Central China is described and illustrated. The new species is morphologically similar to Astragalus sinicus and A. wulingensis, but differs from both by its spreading pubescent indumentum on stems and petioles, longer petioles, white bracts, whitish or yellow corolla, longer claw of the keel-petal, hairy pods and smaller seeds.
A contribution on the morphometrics of the thick-clawed crayfish Pontastacus pachypus (Rathke, 1837) (Decapoda, Astacoidea, Astacidae)
Authors: Imentai Aiman , Bláha Martin , Veselý Lukáš , Křišťan Jiří , Policar Tomas
Published: January 2023

The thick–clawed crayfish Pontastacus pachypus (Rathke, 1837) is an endangered, and the least known, crayfish species in Europe. Currently, detailed information regarding the morphology, ecology and reproduction of thick–clawed crayfish is outdated. This study presents, for the first time, detailed photographs of the thick-clawed crayfish, and updated information on distinctive morphological characters and morphometric analysis. New specifications of the carapace and appendage morphological characteristics were established as: 1) the rostrum is long, sharply pointed and has three pairs of distinctive sub-apical lateral spines, 2) two well–developed pairs of post–orbital ridge on the carapace are ended by prominent spine; 3) each finger of chelae ends with a black sharp tip. Among the 18 morphometric indices, carapace width to the total length (CPW/TL), abdomen width to the total length (ABW/TL) and claw height to the claw width (CLH/CLW) clearly differentiate P. pachypus from the other representatives of Astacus genus (A. colchicus and A. astacus) and P. leptodactylus (P<0.05). Comparison of individual indices between P. pachypus and P. leptodactylus revealed that almost all indices differed significantly except head length to the total length (HEL/TL) and rostrum length to the total length (ROL/TL). This study contributes to the identification of the thick–clawed crayfish for the purpose of conservation and protection of its localities.
Inference for Large‐Scale Linear Systems With Known Coefficients
Authors: Fang Zheng , Santos Andres , Shaikh Azeem M. , Torgovitsky Alexander
Published: January 2023

This paper considers the problem of testing whether there exists a non‐negative solution to a possibly under‐determined system of linear equations with known coefficients. This hypothesis testing problem arises naturally in a number of settings, including random coefficient, treatment effect, and discrete choice models, as well as a class of linear programming problems. As a first contribution, we obtain a novel geometric characterization of the null hypothesis in terms of identified parameters satisfying an infinite set of inequality restrictions. Using this characterization, we devise a test that requires solving only linear programs for its implementation, and thus remains computationally feasible in the high‐dimensional applications that motivate our analysis. The asymptotic size of the proposed test is shown to equal at most the nominal level uniformly over a large class of distributions that permits the number of linear equations to grow with the sample size.
Is Learning Analytics the Future of Online Education?
Authors: Sahni Jolly
Published: January 2023

Educational structures have been evolving, that even so rapidly with the revolution of information technology and internet. Recent pandemic and its after effects are still looming over the globe, posing as challenge and an opportunity for educators. Online education was one such innovation, which has changed the dynamics of education around the world. The purpose of the paper is three-fold, first, to assess the levels of student engagement in the online learning environment, second, to examine how student engagement is related to their academic performance using learning analytic tools and third, to propose an integrated learning analytics framework. The study used, an exploratory research method and the data was collected from multiple sources; LMS Logs, self-administered questionnaires from students, and interviews with the instructor. The study was conducted at a course level in a private university. The finding suggests a positive relationship between student engagement and their academic performance and advocate the application of an analytics plug-in on LMS which supported instructors in identifying students at risk and providing them with real-time feedback aiming to improve their performance. The study provides insights into the field of online learning and offers evidence-based recommendations to educators. The utilization of Learning Analytics to examine student engagement and understanding of how students learn would contribute to the development of learning theories and in designing an appropriate digital learning environment that supports and improves their learning.
Experience with Online Learning of Mathematics in Primary Education
Authors: Pokorný Milan
Published: January 2023

A spread of COVID-19 has significantly influenced teaching methods at universities all over the world. In 2020, face-to-face lectures at our university were banned, or were allowed only with limited number of students. Thus, in an effort to keep high academic standards, teachers had to rely on synchronous and asynchronous forms of online learning. The paper analyze our experience with online learning of the subject Mathematics in Primary Education. We focus on several problems: an influence of a ban of face-to-face lessons to students’ ability to pass the final test, difference in level of knowledge of full-time and part-time students, correlation between an average study mean and results in a final test, impact of online learning on the satisfaction of students with their results, students’ preference of face-to-face lessons to online learning. The paper expands the results presented on the international conference XXXV DIDMATTECH 2022, published in the collection of abstracts.
Software Development for Comprehensive Assessment of English Online Teaching Quality in Universities Based on Data Mining
Authors: Zhang Zhe
Published: January 2023

In the context of big data in education, the education industry is combined with information technology to form an online teaching model. In order to analyze the actual effectiveness of online teaching methods, a comprehensive evaluation model of online teaching quality is developed based on data mining. The model is divided into two parts: an improved K-modes algorithm to evaluate English teachers’ “teaching” and a feed-forward neural network to evaluate students’ “learning”. The improved K-modes algorithm cleansed, analyzed, and mined the teaching data, and improved the calculation of cosine similarity to establish a model for evaluating teachers’ teaching status, the neural network model has more excellent index results, where the average error is 0.98, within 1, so the neural network model has a smaller error result. The combined model has a strong feasibility for the comprehensive evaluation of English online teaching quality.
A MOOC-Based Hybrid Teaching Model of College English
Authors: Feng Tan , Abualigah Laith
Published: January 2023

In the era of intelligence, Internet + technology is widely used in various fields, and English Teaching in the education industry of colleges and universities gradually tends to be an online and offline mixed teaching mode. However, under the MOOC model, the feedback of College Students’ English learning and the recognition of their knowledge level has become new difficulties. Aiming at the feedback of students’ learning situation under the mixed mode of College English teaching, this paper uses the optimized Bayesian knowledge tracking model (BKTM) to predict students’ English learning situation and introduces students’ learning behavior and forgetting behavior to optimize parameters. Finally, a performance verification experiment is carried out by analyzing the students’ answer performance in College English mixed teaching. The results show that the prediction errors of the four knowledge points of 60 students in the two classes are all about 7%, and the maximum error is 11%. Experiments show that the model has high accuracy and stable performance in predicting the probability of mastering knowledge points.
An Application Study of the UTAUT Methodology for the Flipped Classroom Model Adoption by Applied Sciences and Technology Teachers
Authors: Plageras Antonios , Xenakis Apostolos , Kalovrektis Konstantinos , Vavougios Denis
Published: January 2023

The teaching method of flipped classroom (FC), gives students the opportunity to participate actively during class, while the teacher’s role is supportive than intrusive. The application of FC improves teaching and learning process, especially in applied sciences and technology, as literature study reveals. The current study aims to investigate the application of Unified Theory of Acceptance and Use of Technology (UTAUT) methodology, by applied sciences and technology teachers, who combine FC to improve learning results and better meet their teaching goals. To this end, we apply quantitative research, exploit, and discuss our data findings. A total number of 65 high school teachers, around the area of Central Greece, in the region of Thessaly, took part in our research. Our data is analyzed via Structural Equation Models (SEMs)which belong to a family of multivariable statistical analysis that refer to linear correlations among quantitative mainly variables, with confirmatory role. The results of our study reveal that social influence is significant for the prediction of teachers’ intention (current of future) to apply flipped classroom model approach. Additionally, our study claims to support that flipped classroom model plays a crucial role in updating educational demands of the 21st century, especially in guaranteeing the use of technology tools in equally during teaching and learning process. Finally, this study may assist teachers to adjust and reinforce flipped classroom’s approach, by distinguishing the technology acceptance factors inside a contemporary classroom.