bluuebunny/crossref_metadata_2025 huggingface dataset:
Level of Family Knowledge and Elderly Activity in The Elderly Integrated Health Center
Authors: Masruro Umi , Muhammad Zulfikar , Sasono Tri Nurhudi
Published: January 2023

The elderly Integrated Health Center is one of the government's efforts to foster the elderly health of the elderly. However, problems are often encountered in its implementation, such as the lack of active elderly in the Integrated Integrated Health Center due to the lack of family knowledge about the Elderly Integrated Health Center. We aimed to determine the relationship between the level of family knowledge about the Integrated Health Center of the elderly with the activeness of the elderly in the Integrated Health Center. The design of this study used the Correlation Analytic Description method with the Cross-Sectional approach. The sample had 44 respondents using the Purposive Sampling technique. The questionnaire was used for collecting data, and for processing data, we used the Spearman Rho analysis test. The results showed that there was a relationship between family knowledge level about the Elderly Integrated Health Center and the activeness with the results of the p-value <0.001. Based on this, the level of family knowledge about the Integrated Health Center for the elderly is related to the activeness of the elderly in the Integrated Health Center for the elderly. Thus it is necessary to increase family knowledge about the Integrated Health Center for the elderly so that the elderly can actively participate in the Integrated Health Center for the elderly.
Utilization of Adaptive Communication in End-Of-Life Care in Intensive Care Unit During the Covid-19 Pandemic: Literature Review
Authors: Ulfah Nurrahmani
Published: January 2023

Covid-19 is becoming a global pandemic that presents new challenges in critical care. Visitation restrictions and isolation are major challenges in end-of-life care communication. The use of communication as an indicator of the quality of end-of-life care in the critical care management chain is required to adapt creatively and effectively. The aim of this research is to know the description of communication in end-of-life care in intensive care units during the covid-19 pandemic based on literature sources related to scientific research journals. The research was conducted by searching for research results published in 2019-2021 from databases such as PubMed, google scholar, and science direct using the keywords "communication", "end-of-life", "intensive care unit", and "pandemic". The search results selected twelve articles that met the PICO analysis for review. Twelve articles explain that adaptive communication can be carried out between patients, families, and the medical team through continuous video and telephone calls. Long-distance communication is carried out by following special rules, namely on time, coordinated by the entire team, and environmental and patient readiness, both in outward appearance and hemodynamic status. Communication adaptations in other forms are described in more detail in the communication guide checklist and written information sheets, as well as efforts to increase the role and number of nursing staff in large-scale communications. The use of adaptive communication positively can be beneficial in improving the quality of end-of-life care in intensive care units during a pandemic.
Overview of Self-Compassion on Nurses at Santa Elisabeth Hospital Medan 2022
Authors: Derang Imelda , Pujiastuti Maria , Sinaga Betty Rosefa
Published: January 2023

Self-compassion is a mindset of accepting, understanding, and loving oneself in order to be capable of manipulating feelings positively, overcoming problems faced, decreasing anxiety, stress, and depression; and also being superb in knowing oneself when experiencing difficulties so as no longer to criticize oneself excessively and can enhance the exceptional of life, accordingly self-compassion is needed in nursing services in enhancing the excellent of nursing services. This study aims to identify self-compassion in nurses at Santa Elisabeth Hospital Medan in 2022. We used a descriptive method. The sampling technique is total sampling, and we have 196 respondents. This study uses a compassion scale questionnaire with 26 statements, consisting of 6 components, namely self-kindness, self-judgment, common humanity, isolation, mindfulness, and overidentification. The results obtained from the description of self-compassion of nurses at Santa Elisabeth Hospital Medan 2022. We found that in high category as many as 62.8%, and in low category as many as 37.2%. It can be said that the self-compassion of nurses at Santa Elisabeth Hospital Medan is high in treating themselves and others well and being able to understand one's shortcomings. We hope that nurses can maintain their self-compassion in service tasks.
FAMILIA CHLORANTHACEAE
Authors:   Instituto de Ecología, A. C., Centro Regional del Bajío, Calderón de Rzedowski Graciela
Published: January 2023

Familia de distribución pantropical, en la cual se reconocen en la actualidad cuatro géneros con unas 75 especies habitantes de Asia y de América, donde se encuentra representada por un género.
FAMILIA TAXODIACEAE
Authors:   Instituto de Ecología, A. C., Centro Regional del Bajío, Carranza González Eleazar
Published: January 2023

Familia que reúne alrededor de 10 géneros y 16 especies, que se distribuyen principalmente en regiones templadas del Hemisferio Norte. Varias especies se cultivan con fines ornamentales en diferentes partes del mundo. Pertenecen aquí árboles de enormes dimensiones y de gran longevidad, como Sequoia y Taxodium. Taxodiaceae guarda estrecha relación con Cupressaceae, a grado tal que algunos autores han considerado que en esta última se deben incluir a todos los taxa tratados conservadoramente dentro de Taxodiaceae. De México se conoce sólo un género.
FAMILIA LINACEAE
Authors:   Instituto de Ecología, A. C., Centro Regional del Bajío, Rzedowski Jerzy , Calderón de Rzedowski Graciela ,   Instituto de Ecología, A.C., Centro Regional del Bajío
Published: January 2023

La circunscripción de la familia varía según el criterio de diversos autores, pero lo más común es que se consideren alrededor de 10 géneros con poco más de 200 especies de amplia distribución mundial, preferentemente en zonas templadas. En nuestra zona de estudio se presenta solamente el género Linum. A éste pertenecen unas 180 especies distribuidas en ambos hemisferios, la mayoría de regiones templadas y subtropicales. Pertenece aquí el “lino” (Linum usitatissimum L.), originario de Eurasia, que durante siglos ha sido ampliamente cultivado por sus tallos que contienen fibras apreciadas para la fabricación de telas y papeles finos, así como para la extracción del “aceite de linaza” a partir de las semillas, mismas que también poseen propiedades medicinales (a la vez que tóxicas). Tanto Linum usitatissimum como algunas otras especies, se cultivan igualmente como ornamentales. Para México se reconocen cerca de 30 especies que habitan en regiones de clima más bien fresco, tanto árido como moderadamente húmedo. Varias son francamente calcífilas, mientras que otras, por el contrario, sólo se registran de suelos derivados de rocas volcánicas.
FAMILIA SMILACACEAE
Authors:   Instituto de Ecología, A. C., Centro Regional del Bajío, Calderón de Rzedowski Graciela , Rzedowski Jerzy ,   Instituto de Ecología, A.C., Centro Regional del Bajío
Published: January 2023

Smilax y algunos géneros afines no han recibido un acomodo uniformemente aceptado en la clasificación de las monocotiledóneas. Varios autores los ubican como parte de Liliaceae sensu lato. Otros prefieren reconocer la familia Smilacaceae, pero tampoco hay acuerdo en cuanto a su circunscripción. Aquí se le acepta en el sentido de Hutchinson*, quien reconoce cuatro géneros, de los que tres son de pocos componentes y de área restringida a Australasia, mientras que Smilax tiene amplia distribución mundial y reune, de acuerdo con los criterios de diferentes autores, unas 200 a 350 especies. La importancia económica de la familia reside mayormente en las propiedades medicinales de algunos representantes de Smilax. Para México Morton (op. cit.) reconoce 21 especies, mayormente distribuidas en la vertiente atlántica y casi todas con franca afinidad hacia los bosques húmedos. En la región de esta Flora se registran nueve.
FAMILIA VIOLACEAE
Authors:   Department of Botany University of Wisconsin-Madison, Ballard, Jr. Harvey E.
Published: January 2023

Aproximadamente 20 géneros y unas 900 especies de amplia distribución, más de la mitad de las cuales pertenece a Viola, cuyos miembros son predominantemente herbáceos y afines a climas templados o tropicales de montaña. Los restantes componentes de la familia son preferentemente leñosos, se concentran en climas cálidos o semicálidos, siendo Hybanthus y Rinorea los géneros de mayor tamaño. La familia es notable por sus dificultades taxonómicas, debido en especial al complejo patrón de variación y a la frecuente hibridación en Rinorea y en Viola. En el género Viola y en al menos una especie de Hybanthus se ha comprobado la existencia de cápsulas formadas a partir de flores cleistógamas, fenómeno de frecuencia desconocida en otros miembros de la familia. Grupo de relativamente escaso interés económico, aunque varios de sus representantes se emplean en la medicina y otros como ornamentales. Al género Viola pertenecen las numerosas “violetas” y “pensamientos” cultivados derivan de varios antecesores silvestres europeos. La “violeta” es un cultivar de V. odorata L. Tanto V. tricolor L. (“pensamiento”) como V. odorata se encuentran en forma esporádica a través del Nuevo Mundo, persistiendo a veces por corto tiempo en parcelas abandonadas o en sitios abiertos con disturbio cerca de jardines desatendidos en Mesoamérica (incluyendo la región del Bajío) y en Sudamérica. Además de su importancia como plantas ornamentales y medicinales, las hojas se consumían crudas o cocidas a manera de hortaliza; las flores se han usado en ensaladas o (especialmente V. odorata en Europa) en confitería fina.
FAMILIA FLACOURTIACEAE
Authors:   Instituto de Ecología, A. C., Centro Regional del Bajío, Calderón de Rzedowski Graciela
Published: January 2023

Se calculan alrededor de 85 géneros con poco más de 800 especies, de distribución pantropical. Varios representantes de esta familia se reconocen como de valor medicinal, alimenticio u ornamental, escasamente se menciona su importancia en la ebanistería o en la construcción de habitaciones humanas. En nuestra área se registran cuatro géneros, aunque otro más (Casearia) está representado por varias especies en la vecina Huasteca Potosina, y no es imposible que exista también en el noreste de Querétaro.
FAMILIA GUTTIFERAE
Authors:   Escuela Nacional de Ciencias Biológicas, Instituto Politécnico Nacional, Rodríguez Jiménez Concepción
Published: January 2023

Se reconocen 40 géneros con aproximadamente 1000 especies distribuidas en regiones templadas, subtropicales y tropicales del mundo, encontrándose mejor representadas en estas dos últimas. Algunas son de importancia económica, como el "mangostan" (Garcinia mangostana L.) y el "zapote mamey" (Mammea americana L.).
FAMILIA CONNARACEAE
Authors:   Instituto de Ecología, A. C., Centro Regional del Bajío, Calderón de Rzedowski Graciela
Published: January 2023

Familia de distribución pantropical, particularmente diversificada en el Viejo Mundo, donde en especial se reconoce que ciertas especies tienen propiedades astringentes y/o aplicaciones en la medicina vernácula contra diversas afecciones. Otras se usan con fines mágicos u ornamentales, de unas cuantas se dice que el arilo de la semilla es comestible o que las fuertes raíces se utilizan como cuerdas. En el sentido opuesto algunas presentan pelos urticantes o son venenosas. Se calculan unos 16 a 24 géneros con 300 a 400 especies, según los criterios de diferentes autores. En la región de estudio se presenta Rourea.
FAMILIA EBENACEAE
Authors:   Instituto de Ecología, A. C., Centro Regional del Bajío, Carranza González Eleazar
Published: January 2023

Familia con dos géneros: Diospyros de distribución pantropical con unas 475 especies y Euclea, de África, con 12 aproximadamente. En México el género Diospyros tiene importancia por el fruto de algunas especies que es comestible. De algunos representantes africanos se obtiene la preciada madera de "ébano".
FAMILIA CAPRIFOLIACEAE
Authors:   Universidad Autónoma Agraria Antonio Narro, Villarreal Q. José Ángel
Published: January 2023

La familia comprende 13 a 16 géneros y unas 400 especies de plantas de regiones templadas y zonas intertropicales montañosas, principalmente del Hemisferio Norte, algunas extendiéndose hasta Sudamérica, Australia y Nueva Zelanda. Muchas caprifoliáceas se cultivan como ornamentales en jardines de regiones de clima fresco por sus flores y frutos vistosos. Actualmente se considera que la familia en el sentido tradicional no forma un grupo monofilético; para esta contribución se considera a Caprifoliaceae sensu stricto. Para la región de estudio se reconocen tres géneros con cinco especies.
Flipgrid: Video-based applications to improve English ability for junior high school students
Authors: Putri Nia Ria , Padmadewi Ni Nyoman , Budiarta Luh Gd Rahayu
Published: January 2023

globalisasi. Selain itu, bahasa inggris merupakan bahasa yang dibutuhkan dalam level international. Sehingga, penelitian ini bertujuan untuk menguji pengaruh Flipgrid dengan fitur utama berbasis video terhadap kemampuan bahasa inggris siswa Sekolah Menengah Pertama. Metode eksperimen dengan pendekatan kuantitaif yang digunakan dalam penelitian ini. Desain yang digunakan yaitu pre-experiment dengan satu grup pre-test dan post-test. Instrumen yang digunakan untuk pengumpulan data adalah tes bahasa inggris, yang diberikan pada pre-test dan post-test dengan soal yang sama. Tiga puluh empat siswa di kelas delapan SMP 17 Agustus 1945-1 Muncar berpartisipasi dalam penelitian ini. Data yang di kumpulkan di analisis menggunakan analisis statistik deskriptif dan analisis statistik inferensial. Hasil yang ditemukan yaitu terdapat pengaruh yang signifikan dengan tingkat efektivitas sedang dalam penggunaan Flipgrid terhadap kemampuan bahasa inggris siswa di Sekolah Menengah Pertama. Sehingga, kesimpulan yang didaptkan yaitu Flipgrid dengan basis video dapat meningkatkan kemampuan bahasa Inggris siswa. English is a solid language to support globalization. In addition, English is a language required at the international level. Thus, this study aims to examine the effect of video-based Flipgrid on the English language skills of junior high school students. The experimental method with a quantitative approach is used in this study. The design used is a pre-experiment with one group pre-test and post-test. The instrument used for data collection was an English test given to the pre-test and post-test with the same questions. Thirty-four students in the eighth grade of SMP 17 Agustus 1945-1 Muncar participated in this study. The data collected were analyzed using descriptive statistical analysis and inferential statistical analysis. The results found a significant effect with moderate effectiveness in using Flipgrid on students' English skills in junior high schools. Thus, the conclusion is that Flipgrid, with a video base, can improve students' English skills
Effect of Powtoon Media and Problem Based Learning Model on Accounting Student Learning Outcomes
Authors: Yhonara Merlyana Agnes , Astuti Elly , Styaningrum Farida
Published: January 2023

This study aims to determine whether there is a difference in the effect of the Problem Based Learning learning model and Powtoon learning media and the interaction of the influence between the learning model and learning media on student learning outcomes. This research was conducted on students of SMK Accounting with a total of 131 students. The research was conducted using a quantitative method of quasi-experimental research with data collection techniques using multiple-choice learning outcomes tests that have been tested through a two-way ANOVA test and followed by the Pos hoc Tukey test. Data processing in this study used SPSS 16. The results showed that: (1) There was a significant difference in the effect of the Problem Based Learning learning model on student learning outcomes. (2) There is a significant difference in the effect of Powtoon learning media on student learning outcomes. (3) There is a significant interaction effect between the Problem Based Learning learning model and Powtoon learning media on student learning outcomes.
On Some Problems of the Priority of Satisfaction the Claims of Creditors in Cases of Insolvency of Legal Entities
Authors:   M.V. Lomonosov Moscow State University, Abramova Natalia E. , Pylnev Yuri A. ,   Moscow EMPP Law Firm
Published: January 2023

Relevance. The authors of the article describe the ratio of creditors' claims in cases of insolvency, analyze the current judicial practice and new law enforcement approaches of the Supreme Court of the Russian Federation in this area, draw a conclusion about the need to strengthen the scientific justification of these restrictions (ratios), draw at-tention to the gaps in the legislative regulation of restrictions creditor claims in bankruptcy cases. The purpose of the study is to identify and solve problems related to the ratio of claims imposed during the consideration of bankruptcy cases by arbitration courts, to make proposals on the issue under discussion. Objectives: consider the current legal regulation of the institution of subordination of creditors' claims in insolvency cases; analyze judicial acts; identify and solve problems related to the limits of subordination of claims, including the circle of creditors. Methodology. The methodological basis of the study is made up of general scientific and particular scientific methods of research: systemic, analysis and synthesis, the method of ascent from the concrete to the abstract, formal legal, as well as the method of comparative law. Results. As a result of the study, the main causes of the problem of the correlation (limitation) of creditor claims in the bankruptcy of legal entities and individual entrepreneurs were identified, the intended purpose of the subordination of these claims was determined, it was found that domestic legislation does not contain norms on reducing the order of satisfaction of creditors' claims when considering a case on bankruptcy. Conclusions. The existence of the institution of subordination of creditors' claims seems to be justified. At the same time, the current legal regulation regarding the limits of application of the mechanism under consideration is imperfect. The lack of legislative regulation gives rise to many problems when considering specific cases by the courts, related to bankruptcy The authors consider it necessary to supplement Russian legislation with norms on the issue under discussion.
Problems of Staffing Physical Education Work in Schools of the Kursk Region (1918–1940)
Authors:   Southwest State University, Tsukanova Olga M. , Karpova Galina G.
Published: January 2023

The relevance of the scientific article is due to the current state of affairs in the Russian school, which actively prepares students to pass the standards for the "GTO" program. At the same time, undoubtedly an important component today is the staffing of a modern school with appropriate specialists. In this connection, the appeal to historical experience in the field of physical education work with schoolchildren in the pre-war years is certainly relevant and useful. The purpose of the research is to reveal the problems of staffing physical education work in schools of the Kursk Region in the period from 1918 to 1940 of the twentieth century. Objectives: to identify the main problems of staffing physical education work in schools of the Kursk Region in the designated period of time and to trace the main directions in solving this issue. Methodology. The methodological basis of the research was the main methods of historical science: the prin-ciples of historicism and objectivity; analytical, comparative – historical, historical-chronological, historical-genetic methods. Results. The problems faced by the Soviet school during its formation are associated with an acute shortage of qualified personnel, in particular in physical education work. In order to fill the "niche" assigned to the physical education teacher in the school team and physical education lessons, people with little knowledge in pedagogy and physical education were allowed to conduct classes. So in some schools, physical education classes were conducted by former officers, warrant officers, teachers of other subjects. The personnel problem was also associated with a large turnover of personnel from the composition of physical education instructors. In addition, classes were conducted according to the old methodology, which did not meet the requirements of the new time. Conclusions. The specifics of staffing problems are related to the shortage of physical education teachers, staff turnover, outdated methods of teaching physical education at school. The main direction in solving the staffing of physical education work in the schools of the Kursk Region in 1918 – 1940 of the twentieth century was the organization of advanced training courses for physical education teachers.
Soviet Mass Song of the 1920s-1940s in the Mirror of the Epoch
Authors:   Southwest State University, Starodubtseva Irina F. , Khait Gennadii A. , Bashkeeva Kseniya S.
Published: January 2023

Relevance. The relevance of studying the phenomenon of Soviet mass song is currently increasing due to special attention to educational work, to the formation of an active civic position among modern youth. This genre is not only a sign of the era, but also clearly reflects the spiritual, moral, patriotic values of Russian society. The purpose of this article is consideration of the stages of formation of the Soviet mass song genre in the 1920-1940s. Research objectives to consider the formation and development of the Soviet mass song genre in the 1920-1940s; to identify the influence of the main events of national history that influenced the evolution of this genre. Methodology. The work uses general scientific methods of analysis and synthesis of information, as well as a set of methods of historical-cultural, problem-chronological nature; the analysis of the means of musical expressiveness and genre and stylistic features of the subject of research was applied. Results. The social structure of society, which changed after the October Revolution of 1917, required changes in the country's cultural policy. The desire to "throw Pushkin off the ship of modernity" and build a new world led to the emergence and flourishing of the Soviet mass song genre. The concept of “mass song” was filled with new content at different stages of development: in the 1920s, arrangements of revolutionary songs for the choir were among the leading directions in composer creativity. The practice of composing a new text to an already existing melody was widespread. After the end of the civil war, modern dance rhythms penetrate the mass song, against which a large-scale campaign is unfolding in society. In the prewar years, this genre reflected the themes of socialist construction, memories of historical events and bright hopes. With the beginning of the Great Patriotic War, the task facing the artists was determined by the need to help the people survive, raise their fighting spirit, and strengthen patriotic feelings. Conclusion. The Soviet mass song has become an expression of the values and needs of the era and a real documentary evidence of its time.
The Legal Status of Employment in the Context of the Development of the Gig Economy
Authors:   Volgograd Institute of Management - branch of the Russian Academy of National Economy and Public Administration under the President of the Russian Federation, Ponomarchenko Anastasia E.
Published: January 2023

Relevance. This article explores current employment status issues, in particular how the gig economy has in-fluenced the labor market, as the gig economy and digital platform work have become hot topics, changing the format and experience of work for more and more people. Over the years, there has been an increase in the use of gig workers in Russia as well as abroad for several reasons, such as the changing nature of work, the availability of technology, and work preferences. We will start the article with the concepts of the gig economy, gig employment, and studying the reasons for the growth of gig work, after which we will consider possible areas of legal regulation of platform employment and the judicial practice of foreign countries in the field of gig employment. The purpose of the article is to form a scientific approach to determining the legal status of employment in the context of the development of the gig economy. Objectives: to identify the main areas of legal regulation of platform employment, to study foreign experience in determining the status of the self-employed. Methodology. In the process of working on the study, such methods of scientific knowledge as general scientific (analysis, synthesis, comparison, etc.) and particular scientific (formal dogmatic) methods were used. Results. In the course of the study, the legal consolidation of the status of a gig worker and providing it with minimal guarantees of social protection are substantiated. Conclusion. The author substantiates the need to fix the concept of "independent performer" at the legislative level, determine the degree of control by digital platforms over the activities of independent performers. On the example of foreign experience, conclusions are drawn about the need to guarantee the gig worker social protection of his rights and freedoms in the process of carrying out his activities.
EDITORIAL
Authors: Nonato Emanuel do Rosário Santos
Published: January 2023

O ano de 2023 que se inicia traz consigo enormes desafios para a sociedade brasileira que, tendo eleito novos governos em esfera nacional e estadual, inaugura um novo ciclo quadrienal com renovada esperança na construção do país que todos sonhamos, notadamente, no que nos concerne como pesquisadores em Educação, um país no qual todos tenham acesso a Educação pública de qualidade na Educação Básica e na Educação Superior, da Educação Infantil à Pós-graduação stricto sensu. As graves desigualdades sociais, acentuadas pelas não menos graves desigualdades regionais, persistem em desafiar a capacidade do Brasil de produzir uma sociedade justa e fraterna, apta a gerar oportunidades de pleno desenvolvimento humano para todos os brasileiros. Como pesquisadores em Educação, somos chamados a renovar nossos esforços para a construção de um arcabouço científico capaz de apoiar os profissionais da Educação em sua tarefa de produzir a Educação a que aspira e tem direito o povo brasileiro
Práticas Inovadoras de Formação Continuada Docente e o Lugar das Tecnologias
Authors: Arline Thomé da Silva  , Tomio Daniela
Published: January 2023

Com o objetivo de elucidar práticas de formação continuada de professores da Educação Básica, consideradas inovadoras, bem como suas interfaces com as tecnologias digitais, divulgadas no portal Porvir, desenvolveu-se uma pesquisa qualitativa e bibliográfica online. O site Porvir mapeia, produz e divulga conteúdos sobre inovações educacionais. Deste, foram analisadas dez notícias por meio do método de análise textual discursiva. Concluiu-se que todas as práticas formativas têm caráter de inovação, porém o foco é para as inovações marginais e adicionais, ou seja, mudanças que incidem em uso pelos professores de novas metodologias de ensino com tecnologias digitais para aprendizagem dos estudantes. Apenas dois percursos formativos contribuem para inovações fundamentais e institucionais, com a promoção de mudança do contexto profissional a partir do fortalecimento de uma comunidade de aprendizagem docente que reflete suas concepções educativas e investiga suas práticas pedagógicas, no fomento de uma cultura digital, na escola.
Tecnologias Digitais da Informação e Comunicação
Authors: Junior Luiz Martins , Elisabeth W. Martins Rosa , Dias Julice
Published: January 2023

Neste artigo temos como objetivo apresentar uma experiência pedagógica com o uso de tecnologias digitais da informação e comunicação desenvolvida em uma turma do segundo ano do Ensino Médio de uma escola estadual pública catarinense, no ano de 2019, realizada no percurso de Doutorado. Utilizamos uma metodologia de natureza colaborativa de cunho qualitativo, envolvendo vinte e nove estudantes. No estudo encontramos elementos que permitem destacar que as tecnologias digitais da informação e comunicação possibilitam estabelecer redes de aprendizagem e, também configuram como dispositivos de apropriação e mobilização dos conteúdos e conceitos envolvidos no ensino de Geografia. Identificamos que as tecnologias digitais interferem na atuação dos estudantes, além de desafiarem os docentes a recolocarem no fazer pedagógico outras e novas práticas metodológicas, concepções de aprendizagens e relações conceituais.
Algunas Discusiones y Reflexiones Conceptuales Sobre la Educación y el Preconcepto
Authors: Ferber Horacio Martin
Published: January 2023

El objetivo de nuestro trabajo se orienta a realizar una descripción contextual del sistema educativo en Argentina, donde se muestran algunos datos suministrados por el Ministerio de Educación. Dicha información es interpretada desde la Teoría Critica, donde se observa que la violencia pasa de un nivel de horizontal a uno vertical, lo cual implica una internalización de la autoridad diferente, pudiendo generar conflictos institucionales respecto de su organización. A partir de estos conceptos se analiza el rol de la institución como jerarquía parrela que legitima; del observador como padeciente o placiente y por último, la diferencia entre preconcepto y prejuicio.
Língua de Sinais e Ambientes Virtuais de Aprendizagem:
Authors: Dubal Machado Aline , Ludovico Francieli Motter , Barcellos Patrícia da Silva Campelo Costa
Published: January 2023

A Língua de Sinais (LS) constitui os sujeitos surdos (SS) com identidade e cultura específica. As LS fazem parte da sociedade, e, além da comunidade surda, os ouvintes têm se interessado em aprendê-la. Acredita-se que as Tecnologias Digitais da Informação e Comunicação são instrumentos mediadores que podem otimizar o ensino e o aprendizado de uma LS e promover a interação do surdo na sociedade. Assim, a presente investigação objetivou mapear ambientes virtuais de aprendizagem existentes voltados para o ensino e aprendizado de uma Língua de Sinais, a fim de verificar se esses apresentam as seguintes características: ser acessível e bilíngue; sobre Libras; ser destinado a SS, aprendizes ouvintes (AO) e tradutores e intérpretes de LS (TILS), tratar de variações linguísticas e buscar constituir comunidades de prática. Cinco ambientes foram encontrados, todos acessíveis e bilíngues, e os resultados colaboram com futuras pesquisas e implementações que venham fortalecer e promover o aprendizado e valorização dessa língua.
Perspectivas, contradições e crítica do Letramento Científico como dispositivo educacional
Authors: Ferreira Marcello , Costa Marcos Rogério Martins , Demo Pedro
Published: January 2023

Pedro Demo é um dos mais importantes especialistas brasileiros nos campos da sociologia e da metodologia científica aplicada às Ciências Sociais. Fundamentamos e transcrevemos, aqui, a entrevista com ele realizada em julho de 2021, com o objetivo de desdobrar o fenômeno do letramento científico no Brasil, a partir de suas experiências e vivências. Sua carreira universitária ocorreu, principalmente, na Universidade de Brasília, na qual se aposentou como professor titular no Departamento Sociologia e no programa de pós-graduação em Direitos Humanos. Realizou pós-doutoramento na Universidade da Califórnia e foi secretário-geral adjunto do Ministério da Educação. Na entrevista, o prestigioso intelectual trata de diversos aspectos relacionados à carreira e às respectivas linhas de pesquisa, à educação e ao ensino e à promoção da ciência em contexto nacional e internacional, abordando padrões, controvérsias e inflexões críticas em diferentes dimensões do fazer científico como prática social e, portanto, meio de sua transformação. Ficaram repisadas as noções de qualidade política e qualidade formal da avaliação como indicador da práxis educacional.
Diferencias Entre Estudiantes Y Docentes de Una Escuela Secundaria Respecto al Bullying y la Discriminación
Authors: Antonio Cañongo Anayanzin , Ordaz Villegas Gabriela , Acle Tomasini Guadalupe
Published: January 2023

En México se reportan altos índices de prevalencia de bullying, las conductas de hostigamiento físico o psicológico entre el alumnado podrá impactar negativamente a toda la comunidad escolar. De aquí, el interés por analizar las similitudes y diferencias de profesores y alumnos respecto a distintos elementos que caracterizan el bullying. Para ello, se realizó un estudio mixto. Participaron 100 alumnos de secundaria (Medad= 13 años); que contestaron diversos cuestionarios y se entrevistó a 6 docentes (Medad= 51 años). Los principales hallazgos muestran que alumnos y docentes coincidieron en señalar las características de acosadores y acosados, la forma de la violencia ejercida y la intencionalidad. Pero, difirieron respecto al desequilibrio de poder y a la frecuencia de observación, experimentación y perpetración en la presencia de las acciones violentas. Identificar estas similitudes y diferencias entre profesores y alumnos respecto a las características del bullying, permitirá el diseño e instrumentación de programas de intervención para generar entornos escolares seguros y libres de violencia para toda la comunidad escolar en el nivel de secundaria.
Synchrotron radiation photoemission study of the electronic structure of the ultrathin K/AlN interface
Authors: Benemanskaya  G. V.  , Timoshnev  S. N.  , Iluridze  G. N.  , Minashvili  T. A.
Published: January 2023

The electronic structure of the clean AlN surface and the ultrathin K/AlN interface has been studied in situ by synchrotron-based photoelectron spectroscopy using the photon energies in the range of 100-650 eV. The effect of K adsorption was studied. Changes in the valence band and in the Al 2p, N 1s, and K 3p core levels spectra have been investigated using K submonolayer deposition. Modification of the surface electronic structure of the AlN caused by K adsorption is found to originate from the local interaction of N surface atoms and K adatoms. As a results the suppression of intrinsic surface state and appearance of a new induced state are observed. It was found the K-induced electron redistribution effect that causes the positive energy shift of N 1s surface peak and increasing N-ionicity. Keywords: III-nitrides, electronic structure, surface states, metal-III-nitride interfaces, photoelectron spectroscopy.
Irradiation of Cu(In, Ga)Se-=SUB=-2-=/SUB=- Thin Films by 10 MeV Electrons at 77 K: Effect on Photoluminescence Spectra
Authors: Sulimov  M. A.  , Sarychev  M. N.  , Mogilnikov  I. A.  , Ivanov  V. Yu.  , Volkov  V. A.  , Zhivulko  V. D.  , Mudryi  A. V.  , Yakushev  M. V.
Published: January 2023

Thin films of Cu(In, Ga)Se2 on Mo/glass were irradiated by 10 MeV electrons at 77 K and examined by photoluminescence at 77 K before and after irradiation without warming the samples as well as after warming to 300 K. The photoluminescence spectra revealed a broad band constituting 3 merged peaks (P1, P2, P3) assigned to: band-to-band recombination (P1) and recombination of free electrons with holes localised at acceptors influenced by the valence band tail (P2, P3). Irradiation reduced the intensity of the peaks due to deep traps generated by electrons and anomalously reduced the degree of compensation of the material. Keywords: thin films, irradiation, photoluminescence, recombination, band-to-band.
Effect of morphology on the phonon thermal conductivity of Si, Ge, and Si/Ge core/shell nanowires
Authors: Khaliava I. I  , Khamets A. L.  , Safronov I.V.  , Filonov A.B.  , Migas D.B.
Published: January 2023

An additional factor in reducing thermal conductivity for thermoelectric applications of semiconductor nanowires is a change in morphology. In this paper, for Si, Ge and core/shell Si/Ge nanowires the effect of the volume fraction and the type of core material on thermal conductivity at 300 K is investigated by means of nonequilibrium molecular dynamics. Nanowires with experimentally observed <100>, <110>, <111> and <112> orientations and different cross sections were taken into account. It was found that for <112>-oriented Si-core/Ge-shell nanowires with a core volume fraction of ~30% the thermal conductivity is the lowest (5.76 W/(m · K)), while the thermal conductivity values for pure Si and Ge nanowires are 13.8 and 8.21 W/(m · K), respectively. Keywords: nanowire, core/shell structure, morphology, silicon, germanium, thermal conductivity, molecular dynamics.
New perspective materials for solar cells: Cu-=SUB=-2-=/SUB=-CrSnS-=SUB=-4-=/SUB=- solid solutions with orthorhombic structure
Authors: Gapanovich M. V.  , Odin I. N.  , Levin I. M.  , Rakitin V. V.  , Sedlovets D. M.  , Shilov G. V.  , Korchagin D. V.
Published: January 2023

The Cu2CrSnS4 microcrystalline powders and films with orthorhombic structure were obtained by solid-phase synthesis, and their Raman spectra were recorded for the first time. By optical spectroscopy, it was found that their Eg=1.70 eV, while in energy band gap of the powders there is a donor level with E=1.23 eV. It is shown for the first time that films of this material are photosensitive and have p-type of dark conductivity. Keywords: solid-phase synthesis, microcrystalline powder, film, dark conductivity.
Study of the spatial characteristics of emission of surface-emitting ring quantum-cascade lasers
Authors: Babichev A.V.  , Mikhailov D. A.  , Chistyakov D. V.  , Kolodeznyi E.S.  , Gladyshev A. G.  , Voznyuk G. V.  , Mitrofanov M. И.  , Denisov D. V.  , Slipchenko S.O.  , Lyutetskii A. V.  , Dudelev   V. V.  , Evtikhiev V. P.  , Karachinsky L.Ya.  , Novikov I.I.  , Pikhtin N. A.  , Egorov A.Yu.  , Sokolovskii G.S.
Published: January 2023

The results of studies of ring quantum-cascade lasers with surface emission due to a second-order grating formed in the top cladding layers are presented. Surface emission near 7.85 μm with a low threshold current density (3.8 kA/cm2), in comparison with ridge quantum-cascade lasers of the same cavity length is demonstrated. The results of measurements of the intensity distribution of the near and far fields at different pumping levels are presented. The estimated value of the angle of beam extraction relative to the surface normal is in the range (5.7-6.7)o. Keywords: ring cavity, grating, focused ion beam (FIB) etching, superlattices, quantum-cascade laser, epitaxy, indium phosphide.
On the Formation of Low-Resistivity Contacts for 4H-SiC Bipolar Devices
Authors: Afanasev A. V.  , Ilyin V. A.  , Luchinin V. V.  , Serkov A. V.  , Chigirev D. A.
Published: January 2023

The results of studies on the development of technological methods for the formation of low-resistivity contact systems to n- and p-SiC based on single and multilayer Ni-, Al- and Ti-compositions for 4H-SiC based bipolar devices are presented. It is shown that the formation of low-resistivity contacts based on Ni to n-4H-SiC (rhoc=3.6·10-4 Ohm·cm2) and Ni/Al to p-4H-SiC (rhoc=5.9·10-5 Ohm·cm2) is possible within a single cycle of vacuum annealing at 1000oC for 120 s. This technological solution makes it possible to reduce the number of high-temperature processes. Keywords: 4H-SiC, n-type, p-type, ohmic contacts, RTA, TLM, specific contact resistivity.
Two-dimensional plasma excitations in a random array of quantum antidots
Authors: Vasilyev Yu.B.
Published: January 2023

Plasmon excitations in two-dimensional electron systems in an AlGaAs/GaAs heterojunction containing a layer of self-organizing antidots at the heterointerface are experimentally studied. In a magnetic field, in the terahertz absorption spectra obtained by Fourier spectroscopy, along with the cyclotron resonance, a magnetoplasmon mode is observed. With an increase in the magnetic field, an extreme decrease in the width of the magnetoplasmon line occurs, which can be explained by the localization of plasmons by the magnetic field in a random array of antidots. Keywords: plasmon, two-dimensional electron system, array of antidots, heterojunction, cyclotron resonance.
A hybrid metal polymer based on polymethyl methacrylate with embedded metal nanoparticles
Authors: Girhova E.I.  , Mikitchuk A.P.  , Belonovskii A.V.  , Morozov K.M.
Published: January 2023

A study was made of a hybrid metal-polymer material consisting of polymethyl methacrylate (PMMA) and nanoparticles distributed throughout its volume, silver, gold, copper or aluminum. The effective permittivity and absorption cross section are calculated, and the processes of temperature relaxation are modeled. It has been shown that mixtures of PMMA with silver, copper, aluminum, or gold nanoparticles can be used as an active medium in optoacoustic ultrasound generators. Keywords: hybrid material, ultrasound generator, nanoparticle, polymethyl methacrylat.
Influence of chloropentafluoroethane inductively coupled plasma parameters on the rate and characteristics of gallium arsenide etching
Authors: Okhapkin A. I.  , Kraev S. A.  , Arkhipova E. A.  , Daniltsev V. M.  , Khrykin O. I.  , Yunin P. A.  , Drozdov M. N.
Published: January 2023

In paper the influence of parameters of inductively coupled chloropentafluoroethane plasma on the rate and characteristics of gallium arsenide etching was studied. Etched GaAs profiles by white light interferometry and scanning electron microscopy were investigated. It turned out that the process rate does not depend on freon flow, but forward and inductive power, as well as pressure determined. In this case, when the power of the plasma generator increase, the surface morphology changes significantly, that manifests itself in roughness increase and the detection of defects on GaAs and mask. Carrying out a process at low pressure leads to the deposition of single large inhomogeneities on the substrate. The transition from pulsed to continuous etching is accompanied by deterioration in the anisotropy of a process due to the polymer layer deposition on side walls. Keywords: chloropentafluoroethane, plasma-chemical etching, inductively coupled plasma, gallium arsenide.
PA MBE growth of intermediate-composition InGaN layers for red and near-IR laser sources
Authors: Andreev B. A.  , Lobanov D. N.  , Krasil'nikova L. V.  , Kudryavtsev K. E.  , Novikov A. V.  , Yunin P. A.  , Kalinnikov M. A.  , Skorohodov E. V.  , Krasil’nik Z. F.
Published: January 2023

This paper presents the results of studying the growth of InGaN layers with a high (50-80%) indium content by molecular beam epitaxy with nitrogen plasma activation on sapphire substrates with GaN/AlN buffer layers. It is shown that the processes of dissociation and phase separation of the growing InGaN layer, which occur in structures with an indium fraction of about 50%, cannot be suppressed due to the transition to a lower temperature growth (470oC->390oC) without significant degradation of the crystalline quality of the formed structures and a sharp decrease in their emissivity. As an alternative approach to suppressing diffusion processes on the growth surface and, as a result, obtaining homogeneous InGaN layers with an [In] content ~50%, high-temperature (470oC) growth under highly nitrogen-enriched conditions (flux ratio III/V ~0.6) was tested. The InGaN layers grown in this way show intense photoluminescence, while at the same time showing no signs of phase separation according to X-ray diffraction data. This is critically important for the possibility of implementing optical amplification and laser generation in such structures in the red region of the spectrum and in the immediately adjacent part of the near infrared region. Keywords: indium and gallium nitride, molecular beam epitaxy, spinodal decomposition, photoluminescence.
1550 nm range high-speed single-mode vertical-cavity surface-emitting lasers
Authors: Blokhin S.A.  , Babichev A. V.  , Karachinsky L. Ya.  , Novikov I. I.  , Blokhin A. A.  , Bobrov M. A.  , Kuzmenkov A. G.  , Maleev N. A.  , Andryushkin V.V.  , Bougrov V.E.  , Gladyshev A. G.  , Denisov D. V.  , Voropaev K. O.  , Zhumaeva I.O.  , Ustinov V. M.  , Li H.  , Tian S.С.  , Han S.Y.  , Sapunov G.A.  , Egorov А. Yu.  , Bimberg D.
Published: January 2023

The results of complex studies of static and dynamic performance of 1550 nm-range VCSELs, which were created by direct bonding (wafer fusion technique) InAlGaAs/InP optical cavity wafers with AlGaAs/GaAs distributed Bragg reflector wafers grown by molecular beam epitaxy, are presented. The VCSELs with a buried tunnel junction diameter less than 7 μm demonstrated a single-mode lasing with a side-mode suppression ratio more than 40 dB; however, at diameters less than 5 μm, a sharp increase in the threshold current is observed. It is associated to the appearance of a saturable absorber due to penetration of optical mode into the non-pumped regions of the active region. The maximum single-mode output optical power and the -3 dB modulation bandwidth reached 4.5 mW and 8 GHz, respectively, at 20oC. The maximum data rate at 20oC under non-return-to-zero on-off keying modulation was 23 Gb/s for a short-reach link based on single-mode fiber SMF-28. As the length of the optical link increased up to 2000 m, the maximum data rate dropped to 18 Gbit/s. The main factors affecting the high-speed operation and data transmission range are defined and discussed, and the further ways to overcome themit are proposed. Keywords: VCSEL, wafer fusion, molecular beam epitaxy, single-mode operation, high-speed performance.
Surface Plasmon Photodetectors Based on Noble Metals
Authors: Benghorieb  S.  , Bouhadiche  A.  , Benzeghda  S.  , Touam T.
Published: January 2023

In this work, high sensitivity noble metals used in the Kretschmann configuration based photodetectors applied to detect the presence of biological and chemical species in solutions are investigated. The angle of incidence and film thickness dependencies of the surface plasmon polariton resonance (SPPR) of gold, silver and copper by the attenuated total reflection (ATR) method are studied to monitor and evaluate the SPR reflectance angle and reflectivity change. The analysis of the electric field of the surface plasmon wave which appears at the interface between the metallic layer and the air is carried out by the finite element method (FEM). The simulation is performed using COMSOL Multiphysics software which supports FEM. The aim of the present study is to find the most suitable noble metal and its optimum thickness to improve the performance of the SPR photodetector. Keywords: Attenuated total reflection method, FEM based COMSOL multiphysics software, Kretschmann configuration, noble metals, reflectivity.
Determination of the AlN nucleation layer thickness formed on the Al-=SUB=-2-=/SUB=-O-=SUB=-3-=/SUB=-(0001) surface during nitridation process by XPS and IR spectroscopy
Authors: Milakhin D. S.  , Malin T. V.  , Mansurov V. G.  , Kozhukhov A. S.  , Novikova N. N.  , Yakovlev V. A.  , Zhuravlev K. S.
Published: January 2023

The effect of different degrees of the sapphire surface nitridation process completion on the AlN buffer layer morphology has been studied. It was found that ~85% completion of the AlN crystalline phase formation promotes the growth of a two dimensional AlN buffer layer with a smooth surface morphology, regardless of the substrate temperature and ammonia flux. In contrast, during the AlN nucleation layer formation as a result of weak or excessive sapphire nitridation, a polycrystalline or three-dimensional AlN structures with a high density of inversion domains, respectively, were formed. Using independent methods of X-ray photoelectron spectroscopy and infrared spectroscopy of surface polaritons, the thickness of the AlN nucleation layer was determined at ~85% degree of the nitridation process completion, which amounted to ~1 monolayer. Keywords: ammonia molecular beam epitaxy, AlN, sapphire, reflection high-energy electron diffraction, nitridation, inversion domains, X-ray photoelectron spectroscopy, surface polaritons.