bluuebunny/crossref_metadata_2025 huggingface dataset:
PENGEMBANGAN MEDIA VIDEO ANIMASI MENGGUNAKAN APLIKASI PLOTAGON PADA MATERI WAWANCARA SISWA SEKOLAH DASAR
Authors: Rahayu Tutik Puji , William Nanda , Wardhani Intan Susetyo Kusuma
Published: November 2022

Tujuan dari penelitian ini yaitu untuk mengembangkan media jagongan (video animasi wawancara) serta untuk melihat keefektifan media tersebut pada kelas III di sekolah dasar terhadap memahami mataeri wawancara. Metode penelitian yang digunakan dalam penelitian ini yaitu Research and Development model ADDIE. Media yang dikembangkan telah divalidasi oleh ahli media, ahli materi, ahli bahasa, dan validasi kepada praktisi. Setelah melakukan validasi kepada para ahli dan praktisi, maka dilakukan uji lapangan terhadap media, kemudian dilakukan uji keefektifan media. Media diuji cobakan pada siswa kelas III SDN 3 Ngantru, Kecamatan Trenggalek, Kabupaten Trenggalek. Analisis data dalam penelitian ini menggunakan analisis data kuantitatif dan kualitatif. Berdasarkan hasil penelitian menunjukkan media jagongan (video animasi wawancara) efektif untuk meningkatkan pemahaman materi wawancara kelas III di sekolah dasar. Hal ini ditunjukkan berdasarkan hasil uji beda bahwa terdapat perbedaan yang signifikan pemahaman materi wawancara sebelum dan sesudah penggunaan media jagongan menggunakan aplikasi plotagon pada siswa kelas III sekolah dasar.
METODE COOPERATIVE SCRIPT DAPAT MENINGKATKAN KEMAMPUAN BERPIDATO PERSUASIF SISWA
Authors: Ena Komari
Published: November 2022

Salah satu upaya untuk meningkatkan hasil belajar siswa terhadap kemampuan berpidato persuasif siswa kelas IX yaitu menggunakan model pembelajaran Cooperative Script. Penelitian ini bertujuan untuk meningkatkan kemampuan berpidato persuasif siswa kelas IX melalui model pembelajaran Cooperative Script. Subjek penelitian ini yaitu siswa kelas IX E SMPN 5 Sungailiat sebagai subjek penerima tindakan, sedangkan untuk subjek pelaku tindakan yaitu Guru Bahasa Indonesia kelas IX, teman sejawat selaku subjek yang melakukan observasi proses pembelajaran. Metode pengumpulan data dilakukan melalui teknik tes, observasi, dan dokumentasi. Penelitian tindakan ini dilakukan dalam dua siklus, yakni tiap-tiap siklus terdiri dari perencanaan, tindakan, pengamatan, dan refleksi. Hasil penelitian ini menunjukkan bahwa penggunaan model Cooperative Script memiliki pengaruh positif yang signifikan terhadap aktivitas dan hasil belajar Bahasa Indonesia siswa kelas IX, yakni dapat meningkatkan kemampuan berpidato persuasif siswa kelas IX tahun ajaran 2020/2021. Hal ini dapat dilihat dari nilai rata-rata kemampuan berpidato siswa yang mengalami peningkatan, yakni pada siklus I sebesar 33,33% dan siklus II 83,33%.
ANALISIS PEMANFAATAN SEARCH ENGINE SEBAGAI SUMBER BELAJAR PESERTA DIDIK DALAM MEMAHAMI MATERI IPS
Authors: Anggraini Rista , Neni Wahyuningtyas  , I Nyoman Ruja
Published: November 2022

Penelitian ini bertujuan untuk mengetahui pemanfaatan search engine sebagai sumber belajar dalam memahami materi Ilmu Pengetahuan Sosial (IPS) di tengah peralihan perkembangan zaman. Dimana pada awalnya buku sebagai sumber belajar, tetapi sekarang internet digunakan oleh peserta didik sebagai sumber belajar dalam menyelesaikan tugas-tugas yang diberikan oleh guru. Metode yang digunakan dalam penelitian ini yaitu metode penelitian kualitatif dengan pendekatan studi kasus. Hasil dari penelitian ini menunjukkan bahwa sebagian besar peserta didik yang memanfaatkan search engine sebagai sumber belajar IPS mampu menyelesaikan tugas-tugas yang diberikan oleh guru. Situs-situs yang sering dikunjungi oleh peserta didik dalam mencari jawaban yaitu Brainly dan Wikipedia. Rentang waktu yang digunakan oleh peserta didik belajar menggunakan search engine sebagai sumber belajar, yakni intensitas rendah dengan durasi 0,5-1 jam sehari dan intensitas tinggi dengan durasi 3-4 jam sehari. Sebagian besar peserta didik menyatakan bahwa belajar menggunakan search engine sebagai sumber belajar mampu dilakukan secara mandiri, karena memiliki banyak informasi yang bisa mendukung kegiatan belajar peserta didik.
La política comercial de Uruguay con China: la visión de los empresarios
Authors:   , Pereira Martínez María Eugenia
Published: November 2022

Para un país como Uruguay, la gestión de las relaciones bilaterales con un país como China son claves, dada la importancia que el país asiático representa para la economía mundial. Los cambios que ha experimentado dicho país en las últimas décadas lo ha posicionado como uno de los principales mercados de importación y exportación, y ha reconfigurado las dinámicas del comercio internacional. Uruguay no quedó ajena a este fenómeno. China es hoy el principal socio comercial este país, y dicho acercamiento, que en primer lugar se ha dado mediante el comercio, ha abierto las puertas para el estrechamiento de los lazos en otras áreas. Dada la importancia que representa, es posible encontrar estudios que analizan las relaciones bilaterales entre las partes desde diferentes enfoques: algunos más enfocados en temas como los políticos, o en temas económicos, de cooperación, asuntos culturales, de migraciones, entre otros. Son numerosos los estudios en donde se puede ver reflejada la evolución de las relaciones políticas y comerciales entre ambos países. Sin embargo, es más difícil encontrar estudios que aborden el tema desde la óptica empresarial. A pesar de que el comercio ha sido el motor impulsó las relaciones bilaterales, y se dé por entendido que las empresas jugaron un rol fundamental en el mismo, los análisis que se realizan no suelen incorporar las visiones del sector empresarial frente al mercado chino. Este trabajo pretende ser un aporte al campo de estudio desde una mirada que se enfoca en el sector privado, por lo que si bien se buscará entender a nivel más estatal cuales han sido los principales motores que han dinamizado las relaciones, se intentará determinar qué opinión tiene el sector empresarial frente a la política comercial desplegada por parte de Uruguay hacia China.
Champions of Transparency in Education: What Journal Reviewers Can Do to Encourage Open Science Practices
Authors: Renbarger Rachel , Adelson Jill L. , Rosenberg Joshua , Stegenga Sondra M , Lowrey Olivia , Buckley Pamela Rose , Zhang Qiyang
Published: November 2022

As the field of education and especially gifted education gradually moves towards open science, our research community increasingly values transparency and openness brought by open science practices. Yet, individual researchers may be reluctant to adopt open science practices due to low incentives, barriers of extra workload, or lack of support to apply these in certain areas, such as qualitative research. We encourage and give guidelines to reviewers to champion open science practices by warmly influencing authors to consider applying open science practices to quantitative, qualitative, and mixed methods research and providing ample support to produce higher-quality publications. Instead of imposing open science practices on authors, we advocate reviewers suggest small, non-threatening, specific steps to support authors without making them feel overwhelmed, judged, or punished. We believe that these small steps taken by reviewers will make a difference to create a more supportive environment for researchers to adopt better practices.
Validez de contenido de instrumento: Evaluación de la gestión administrativa municipal basado en organizaciones inteligentes
Authors: Tarrillo José , Morán Rogger , Saldaña José
Published: November 2022

En el marco de las transformaciones sociales que se vienen realizando, es necesario contar con instrumentos que permitan adoptar nuevos modelos de gestión administrativa en las instituciones públicas locales. El objetivo del presente trabajo fue construir un instrumento de evaluación de la gestión administrativa municipal basado en el modelo de organizaciones inteligentes, y demostrar su validez de contenido. Se realizó investigación con enfoque mixto, cualitativo por juicios de expertos, y enfoque cuantitativo aplicando el Coeficiente de la V de Aiken. Los resultados mostraron un instrumento construido de 50 ítems, y se obtuvo un coeficiente V de Aiken de 0.8 a uno, y de 0.98 para cada variable. Se concluyó que el nuevo instrumento de evaluación de la gestión administrativa municipal basado en el modelo organizaciones inteligentes, presenta validez de contenido y que estaría apto para pasar a la evaluación de constructo como siguiente fase del proceso de validez.
PANORAMA DO TRABALHO (IN)FORMAL: BREVE INCURSÃO DA CLASSE SOCIAL PRECARIZADA DOS CATADORES DE MATERIAIS RECICLÁVEIS
Authors: Cruz Uilmer Rodrigues Xavier da , Alexandrino Garcia Ricardo
Published: November 2022

Devido à grande quantidade de resíduos sólidos que nossa sociedade produz diariamente, é imprescindível que sejam estabelecidas estratégias de gestão de resíduos, de modo a oferecer a esses uma destinação adequada, evitando prejuízos ambientais. É nessa conjuntura que se avista a importância dos catadores de materiais recicláveis, que cumprem não só uma função ambiental, de manutenção dos centros urbanos e reaproveitamento dos resíduos no processo de reciclagem, mas também uma função socioeconômica, coletando e triando matéria-prima para a indústria, ao mesmo tempo em que geram renda para a própria subsistência. Contudo, apesar da relevância desses trabalhadores, eles continuam sem receber o devido reconhecimento da sociedade, além de serem submetidos a condições precárias de trabalho e serem alvo de discriminação de indivíduos e grupos em posição mais elevada na hierarquia social. Diante desse antagonismo entre valor e desvalorização do trabalho dos catadores de materiais recicláveis, este artigo se propõe a examinar a fonte dessa contradição, percorrendo, para tanto, noções como as de modo de produção, formação social, capitalismo, estratificação social, precarização da classe trabalhadora, relações de consumo e produção social, com vistas a produzir uma leitura acerca desse fenômeno. Parte-se da hipótese de que, apesar da importância de seu trabalho, os catadores de materiais recicláveis, por lidarem com os restos do consumo das classes posicionadas em nível socioeconômico superior, acabam sendo assimilados também como restos, haja vista a forma como ocorre a produção social de sua existência.
BREVES APONTAMENTOS ACERCA DA EVOLUÇÃO HISTÓRICA DA INDÚSTRIA: O CONTEXTO BRASILEIRO E A REGIÃO NORDESTE DIANTE DA DESINDUSTRIALIZAÇÃO
Authors: Leite dos Santos Anderson Felipe
Published: November 2022

A industrialização é um fenômeno mundial com temporalidades e espacialidades diferentes. No Brasil, a industrialização é um processo relativamente recente, datado de meados da década 1930 e com traços espaciais marcados pela centralização de investimentos, notadamente na região Sudeste. A disparidade geográfica da distribuição da indústria nacional levou o Estado a estabelecer estratégias de desconcentração responsáveis por expandir a industrialização para o Nordeste, sobretudo a partir de 1960. Entretanto, o modelo industrial implementado no Brasil, fortemente apoiado nas políticas estatais e no capital estrangeiro, logo deu sinais de esgotamento e culminou em uma desindustrialização precoce, com efeitos sistemáticos e socioterritoriais. Diante do exposto, este trabalho tem como objetivo realizar uma síntese da evolução histórica da indústria, em especial no contexto brasileiro e nordestino, bem como apresentar alguns apontamentos acerca do processo de desindustrialização no país. Para tanto, efetuamos um estudo bibliográfico de autores que vêm trabalhando com a temática, a exemplo de Andrade (1970); Araújo (1997); Cano (1985, 2014); Carlos (1988); Pintaudi e Carlos (1995); Sampaio (2015), entre outros.
THE BENEFITS AND DRAWBACKS STUDENTS AT THE APPLIED SCIENCE PRIVATE UNIVERSITY FIND IN PHYSICS LABORATORIES
Authors: Alayed Tasneem , Sasa Tala , Alayed Sura I. , Alamayreh Rami , Abuhazeem Tahani , Miri Omniya
Published: November 2022

The aim of the current study is to shed light on a newly developed tool that assesses students’ fears about their fear of physics laboratories, and the descriptive analytical approach was adopted to analyze the results. This research conducted on 83 students from the Faculties of Engineering and Information Technology at the Applied Science Private University (ASU), where a comparison was made between the advantages and disadvantages of laboratory experiments. As a result, we found statistically significant differences attributable to gender between physics lab defects, as male students noticed more defects in laboratory experiments than female students, and students of the College of Information Technology also found defects in laboratory experiments in physics more than students in the College of Engineering. Then, we discussed the ways that physics lab lecturers can prepare students professionally for labs, including enhancing their ability to conduct experiments, equipping them with skills to deal effectively with problems they may encounter in labs, and guiding them to effective techniques for studying. Recommendations were made to the lecturers and laboratory supervisors to reduce the students' fears and encourage them to face the challenges and difficulties they face while conducting the experiments.
Implementasi Algoritma A* (A Star) Pada Game 3D Kebudayaan Suku Minahasa
Authors: Lamia Kesia Cerent , Lumenta Arie S.M. , Sugiarso Brave A.
Published: November 2022

Indonesia memiliki banyak budaya yang kita kenal disekitar kita, mulai dari makanan tradisional, rumah tradisional, senjata tradisional, tarian tradisional, lagu tradisional, dan masih banyak lagi. Seiring dengan perkembangan zaman, kebudayaan yang ada di Indonesia pada saat ini secara perlahan mulai terlupakan. Dengan berkembangnya zaman kita dapat membuat sesuatu yang menarik yang dapat mengenalkan budaya kita yang beragam salah satunya budaya Minahasa yang ada di Sulawesi Utara, dalam hal ini lewat pengembangan game. Tujuan penelitian ini adalah untuk membuat game 3D kebudayaan Minahasa dengan mengimplementasikan Algoritma A* (A Star) yang diterapkan pada enemy sebagai NPC (Non-Player Character). Game ini ditujukan untuk semua yang memiliki keinginan untuk menambah wawasannya atau mengenal kebudayaan suku Minahasa. Diharapkan pada saat bermain game, bukan hanya mendapat kesenangannya saja, tetapi juga mendapat ilmu. Game ini dikembangkan dengan metode GDLC (Game Development Life Cycle) yang terdiri dari tahap inisiasi, pra-produksi, produksi, pengujian, beta, dan rilis. Game ini diberi nama Toar Adventure dengan genre aksi dan petualangan. Pengujian penggunaan game ini melibatkan 14 orang yang terdiri dari sebagian mahasiswa program studi Teknik Informatika Universitas Sam Ratulangi dan sebagian masyarakat daerah suku Minahasa. Teknik Pengumpulan data yang dilakukan yaitu metode studi literatur, observasi, dan kuesioner. Hasil penelitian ini adalah berhasil dalam membuat dan menghasilkan game 3D kebudayaan Minahasa dengan mengimplementasikan Algoritma A* (A Star) yang diterapkan pada enemy sebagai NPC (NonPlayer Character), dengan hasil pengujian penggunaan game yaitu 77,69% dan termasuk dalam kategori Baik. Hasil pengujian implementasi Algoritma A* (A Star) pada game dengan 7 orang responden yang terdiri dari orang-orang yang terbiasa memainkan atau mengoperasikan game adalah 83,99% termasuk dalam kategori Sangat Baik.
Narrativas del alumnado de Educación Primaria sobre su bienestar escolar: un diagnóstico inicial
Authors: Requejo Enrique , Losada-Puente Luisa , Rebollo-Quintela Nuria , Mendiri Paula
Published: November 2022

El interés por conocer el bienestar dentro de los centros educativos, sobre todo, desde la perspectiva de sus protagonistas, los niños y las niñas, ocupa un lugar central en la investigación actual. El objetivo de la investigación fue indagar acerca de los indicadores que configuran el bienestar escolar del alumnado de Educación Primaria. Se realizó un estudio cualitativo, en el que participaron 95 estudiantes de dos centros educativos públicos, a los que se les aplicó el Cuestionario Abierto de Bienestar Escolar (CABES). El discurso del alumnado giró en torno a cuatro elementos relativos a su experiencia en la escuela: clima escolar (relacional, de seguridad y de aprendizaje), compromiso escolar (dimensiones comportamental, afectiva y cognitiva), emociones (relacionadas con las actividades escolares, epistémicas, temáticas y sociales) y discontinuidad educativa (diferenciación de roles y contextos, y relación familia-escuela). En definitiva, el mundo escolar representa un espacio de experiencias que resultan significativas y que son percibidas y vivenciadas de forma diferente por cada estudiante, no resultando posible referir una única ni común forma de expresar lo que se entiende como bienestar escolar, aunque sí definir algunos de sus ejes clave. Solo así será posible plantear actuaciones coherentes con las necesidades expresadas por el alumnado.
Análisis de la satisfacción laboral del profesorado no universitario de la Comunidad Autónoma de Galicia
Authors: González Álvarez María
Published: November 2022

El presente trabajo pretende realizar un estudio exploratorio de corte transversal, no experimental, sobre la satisfacción laboral que el profesorado de enseñanzas no universitarias de la Comunidad de Galicia (España) manifiesta tener respecto a diversos aspectos de su trabajo. Se realizó una consulta on line mediante un protocolo elaborado ad hoc cumplimentado por 363 docentes. El coeficiente de fiabilidad de Cronbach es de ,96. Se realizaron análisis descriptivos, diferencia de medias y análisis multivariados. El profesorado valora como medio-alta la satisfacción en sus relaciones interpersonales, reconocimiento que recibe de su trabajo por parte de la comunidad educativa, ambiente de trabajo e instalaciones y recursos del centro. Concede un valor medio a la satisfacción con las instituciones y al reconocimiento que recibe de ellas. La satisfacción con la formación se valora como medio-baja. Es elevado el porcentaje de profesores y profesoras que manifiestan sufrir o haber sufrido situaciones de acoso, maltrato o agresión por parte de las instituciones y miembros de la comunidad educativa. Se considera que las administraciones deben mejorar su relación y reconocimiento respecto al profesorado, prestar una mayor atención a la formación e intervenir con urgencia en las situaciones de acoso, maltrato o agresión sufridas por el profesorado.
El alumnado con trastorno de apego en el limbo escolar. Voces de las familias y profesionales que los y las acompañan
Authors: Garai Ibáñez de Elejalde Beatriz , Lasarte Leonet Gema , Tresserras Angulo Alaitz , Corres-Medrano Irune
Published: November 2022

El alumnado que ha vivido abandono en su infancia y presenta trastorno de apego es en muchas ocasiones invisible en la escuela. La falta de comprensión y formación sobre lo que esto significa y sobre sus consecuencias escolares es denunciada en foros de las familias y profesionales. El fin de este estudio es visibilizar la voz de estos colectivos que señalan la necesidad de un cambio en la escuela. Se utiliza el método netnográfico para comprender e interpretar las claves presentes en sus comunidades virtuales. Se analizan 50 blogs y se identifican 559 post o entradas pertinentes a nuestro objeto de estudio. Utilizamos el programa Nvivo-12 para categorizar y codificar la información obtenida. Los resultados del estudio indican que las familias, a través de los blogs, comparten información sobre recursos (26,59%), estudios científicos (19,14%), experiencias escolares (32,12%) y propuestas de mejora educativa (22,12%). Las familias y profesionales inciden en el desconocimiento e incomprensión de la comunidad escolar sobre la gravedad de las consecuencias del abandono. Solicitan incrementar la información, formación y sensibilización de todos los miembros de la escuela para que estas personas no sufran la desatención escolar y la discriminación que puede abocar en fracaso escolar y social.
Gamificando “El Alquimista”, una intervención para educar en valores a jóvenes adolescentes
Authors: Lamoneda Javier , González-Víllora Sixto , Evangelio Carlos , Fernández-Río Francisco Javier
Published: November 2022

El objetivo del presente estudio es describir una intervención educativa basada en el juego y gamificada en la obra literaria “El Alquimista” para la enseñanza del deporte de orientación, así como explorar las percepciones y el desarrollo de valores en los participantes durante y tras su participación en dicha intervención. Participaron un total de 94 estudiantes (16,06 años, ±0,73). Este estudio sigue una metodología cualitativa a través de la investigación de la narrativa evaluativa. Los participantes, al finalizar el programa, expresaron que le había ayudado a la mejora de las relaciones sociales, les había resultado una experiencia divertida y les había permitido desconectar, tener sensación de libertad en la Naturaleza. Los resultados alientan a seguir investigando en la línea en pro de la educación en valores en jóvenes.
Evaluación del uso del aprendizaje móvil en la educación STEM: Una experiencia de estudiantes universitarios en tiempos de pandemia
Authors: Laurens-Arredondo Luis Alberto
Published: November 2022

La pandemia ocasionada por el COVID-19 ha generado diversos problemas en el proceso de enseñanza-aprendizaje a nivel mundial, en muchos de los casos debido a la implementación apresurada de la llamada Educación Remota de Emergencia, lo que ha complejizado el proceso pedagógico actual. Es por ello que el presente artículo evalúa el uso del m-learning en estudiantes universitarios para el aprendizaje STEM, en tiempos de pandemia, mediante el uso de una aplicación móvil, la cual fue utilizada por los estudiantes para determinar variables cinemáticas. Se implementó un modelo de instrucción con foco en la motivación llamado ARCS, y se evaluó la percepción de los estudiantes mediante un instrumento diseñado para cuantificar la motivación llamado IMMS. Se aplicó un enfoque de investigación cuantitativa para recopilar, procesar y analizar los datos de investigación. El IMMS se aplicó a 47 estudiantes de Ingeniería. Los resultados muestran que la metodología fue valorada positivamente por los encuestados, y se pudo relacionar el aumento en la motivación estimulada con un mayor nivel de aprendizaje. Se proporciona un modelo de medición validado y referencias científicas sólidas, que tienen como objetivo estimular el uso de aplicaciones móviles tanto dentro como fuera de las aulas de clase.
El patrimonio inmaterial y el paisaje como recursos didácticos: una investigación acción a través del Camino de Santiago
Authors: Pérez-Guilarte Yamilé
Published: November 2022

El presente trabajo se enmarca en la línea de investigación de la educación patrimonial desde una perspectiva crítica, centrándose en las potencialidades didácticas del patrimonio cultural inmaterial y el paisaje. Se realiza una investigación acción en profesorado de primaria en formación inicial de la Universidade da Coruña. Los objetivos propuestos son indagar sus representaciones sociales sobre el patrimonio cultural inmaterial y analizar los cambios y continuidades que se producen después de realizar un proyecto didáctico a través de problemas sociales relevantes vinculados al Camino de Santiago. La investigación acción ha permitido que el alumnado otorgue más importancia al patrimonio cultural inmaterial y reconozca su vínculo con el paisaje y con las comunidades. Asimismo, contribuyó a una mejor comprensión de la educación patrimonial desde una perspectiva crítica. Sin embargo, se aprecian continuidades en lo relativo a la escasa presencia de la transmisión intergeneracional, la construcción del futuro, el papel de la Historia, el respeto por la diversidad cultural, los derechos humanos y el reconocimiento de los elementos tangibles inherentes al patrimonio inmaterial. Estos resultados permitieron introducir mejoras en la práctica docente con el fin de lograr una ciudadanía crítica y democrática que luche por la justicia social.
Alfabetización ambiental y crisis ecosocial: diseño y validación de un cuestionario para 4º de ESO
Authors: Martínez-Aznar Javier , Calvo Sevillano Guiomar , Sánchez-León Nuria
Published: November 2022

Los actuales desafíos ecosociales y ambientales demandan un cambio comportamental de la ciudadanía. Para ello, la alfabetización ambiental (ALFAM), como instrumento de la educación ambiental en las instituciones formales, es uno de los principales recursos. Para trabajarla es preciso conocer el nivel de partida de ALFAM del alumnado. Numerosos investigadores han tratado de evaluar y relacionar conocimientos, actitudes y comportamientos, componentes de la ALFAM, con respecto al ambiente, aunque, mayoritariamente, centrados en la educación universitaria. El presente cuestionario pretende evaluar estos tres componentes centrándose en la Educación Secundaria. La validación del mismo se realizó en dos fases: una primera mediante juicio de expertos y una segunda con una prueba piloto y su posterior análisis cualitativo y cuantitativo. Este proceso dio lugar al Cuestionario de Alfabetización Ambiental y Crisis Ecosocial (CAFTÁN) con 35 preguntas y 3 subpreguntas abiertas, que dota al profesorado de una herramienta actualizada para conocer, en el alumnado de Secundaria, el grado de ALFAM.
New energy approaches to the use of waste biosorbents of microalgae Chlorella kessleri (Chlorellaceae, Chlorellales)
Authors: Politaeva N. A. , Illin I. V. , Oparina A. M. , Donetskova A. S.
Published: November 2022

The use of microalgae Chlorella kessleri VKPM A1-11 ARM (RF, NPO Algobiotechnology) for environmental and energy purposes is considered. The results of our study of the use of C. kessleri microalgae biomass as a biosorbent to purify model wastewater from Cu2+ ions under static conditions are presented. Biosorption is a promising technology for the treatment of industrial effluents containing various heavy metal compounds, but the issues of economic benefits of using biosorbents, their environmental safety and the cost of disposal of used sorbents are subject to much discussion. The paper proposes to dispose the used biosorbent formed after wastewater treatment from copper as an additional fuel. The copper concentration in the filtrate was determined by colorimetric analysis with sodium diethyldithiocarbamate. The cleaning efficiency and sorption capacity of the dry mass of C. kessleri were obtained by calculation. The maximum sorption capacity for Cu2+ ions was 4.2 mg/g. The purification efficiency reached 87% at the initial concentration of Cu2+ ions being 97 mg/l. Tests to estimate the specific heat of combustion of C. kessleri biomass and used biosorbents based thereon were carried out by the calorimetric method using a bomb calorimeter. The specific heats of combustion were 22,125 kJ/kg and 21,674 kJ/kg, respectively. A comparison of these values with traditional energy carriers is given. A technological scheme has been developed for a waste-free cycle of using C. kessleri to treat wastewater from industrial enterprises with the production of several valuable resources as end products, such as purified water, energy resources, fertilizers, and recycled metals. The obtained results of our study can be applied in technologies for post-treatment of wastewater from various industrial enterprises using biological non-waste resources.
Effect of glauconite-containing wastes obtained during phosphorite enrichment on lead mobility in soils
Authors: Syrchina N. V. , Pilip L. V. , Ashikhmina T. Ya. , Kantor G. Ya.
Published: November 2022

Lead (plumbum, Pb) is a toxic element of the first hazard class. Global soil pollution with Pb leads to severe consequences for the environment and human health. Mobile Pb forms represent a special environmental danger. To immobilize Pb in soils, various materials (meliorants) are used which can convert it into some form poorly soluble in water and weak acids. The search for safe natural materials for the rehabilitation of contaminated soils is of great practical importance. Glauconite-containing phosphorite tailings (PT) are promising reclamation materials. The main component of PT, glauconite, is a natural sorbent capable of binding heavy metals. The composition of PT also includes small-fraction phosphorites, clay and calcareous components, and quartz. The effect of PT on lead mobility in soil was studied in laboratory conditions. Four variants of loamy soil with various chemical structures were used. The lead content in different soil samples did not differ statistically significantly from each other. The effect of PT on lead mobility was evaluated in comparison with limestone. The meliorants were introduced in a dosage of 1 g / kg. The use of PT led to active Pb immobilization in acidic organic–depleted soils, while lime did so in neutral highly humus soils. Mathematical processing of our experimental results suggests that the formation of sedentary complexes with organic matter and adsorption of lead on glauconite serves the predominant mechanism of binding Pb in soil when using lime and PT, respectively. The introduction of PT causes a decrease in the Pb mobility, as well as the enrichment of the soil with phosphorus, potassium, sulfur, calcium and trace elements contained in this meliorant. This is important for restoring the fertility of degraded lands.
MASS TRANSFER DURING GALVANIC DEPOSITION OF COATINGS WITH A LEVELING ADDITIVE
Authors:   Voronezh State Technical University, Zhachkin Sergey , Penkov Nikita ,   MERC AF «AFA», Nevstruev Yury ,   Aquapascal, Biryukov Alexander ,   Voronezh State Technical University, Vlasov Dmitry ,   MERC AF «AFA»
Published: November 2022

The ability to control the roughness of the formed deposits with the provision of the leveling ability of the workpieces is important for obtaining dimensional sealed galvanic coatings when restoring power hydraulic equipment. A model that describes the process of convective diffusion of composite particles into the galvanic matrix of the formed coating is considered. It is established that the presented problem can be described by the classical Laplace equation. However, the analytical solution in the existing formulation isn’t integrated in quadratures. The numerical method described by Watson and Edwards was used. It allows to get a connection between the electrical characteristics of the field due to the decomposition of the secondary electric field into the primary field and the polarization field. It is assumed that the diffusion of the leveling additive occurs in a field similar to the primary electric field, and the concentration of the additive directly at the electrode surface is constant and equal to zero. A qualitative agreement between the calculated leveling ability and the experimentally found values for the chromium electrolyte was established when determining the amount of the leveling additive from the potential-concentration curves at a constant current strength. The dependences obtained in the course of the study indicate the exponential nature of the change in the microprofile of the formed galvanic coating with the time of electrolysis, both in the case of positive and negative equalization. This is confirmed by a lot of experimental data concerning the development of roughness in the case of diffusion restrictions. The proposed algorithm is stated quite clearly, which makes it possible to automate it for the production of practical calculations on the numerical integration of a system of differential equations in partial derivatives using a computer.
ESTIMATION OF THE PARAMETERS OF THE CLOTOID TRAJECTORY OF THE ENTRANCE TO THE TURN OF A WHEELED VEHICLE
Authors:   FSBEI HE «Voronezh State Agrarian University named after Emperor Peter the Great», Belyaev Alexander , Afonichev Dmitry ,   FSBEI HE «Voronezh State Agrarian University named after Emperor Peter the Great», Trishina Tatiana ,   FSBEI HE «Voronezh State Agrarian University named after Emperor Peter the Great»
Published: November 2022

A theoretical assessment of the influence of the translational speed of a wheeled vehicle and the angular rotation speed of its steered wheels on the main characteristics of the clotoid curve is carried out. The calculations were carried out with the following initial parameters characterizing the structural and geometric features of the wheeled vehicle: the longitudinal base of the machine is 2.6 m; the distance between the axes of the front axle pins is 1.8 m; the maximum angle of rotation of the driven wheels is 33 °30'. The speed of the translational movement of the machine and the angular rotation speed of the controlled wheels was varied. The results of the evaluation are as follows. With a constant angular rotation speed of the front wheels of 0.195 s-1 and with a change in the speed of translational motion in the range from 0.57 m/s to 1.78 m / s, the maximum abscissa of the clotoid curve increased from 0.113 m to 1.074 m – almost tenfold, and the maximum ordinate from 1.703 m to 5.141 m - approximately three times. At a constant translational speed of 1.41 m/s and with a change in angular velocity in the range from 0.0974 s-1 to 0.292 s-1, which corresponds to the time interval of turning the wheels at a maximum angle from 2 s to 6 s, it was obtained: the maximum abscissa decreases with an increase in angular velocity from 2.585 m to 0.305 m - by 8.5 times, and the maximum ordinate - from 7,689 m to 2.79 m - 2.8 times. The calculation established that the minimum radius of curvature of the trajectory at the end of the section of the entrance to the turn is equal to 5,061 m, which corresponds, as it should be, to the value of the minimum theoretical radius given in the technical characteristics of some wheeled vehicles with the accepted initial parameters.
ADDITIVE TECHNOLOGIES FOR MANUFACTURING PARTS O
Authors:   LLC ", Zorin Alexander ,   Techline", Rodionov Yuri ,   LLC "Techline",   FSBEI HE "Michurinsk State Agrarian University",   FSBEI HE "Tambov State Technical University", Nikitin Dmitry ,   LLC "Techline",   FSBEI HE "Michurinsk State Agrarian University",   FSBEI HE "Tambov State Technical University", Skomorokhova Anastasia ,   FSBEI HE "Tambov State Technical University"
Published: November 2022

. The tasks of prototyping using 3D printing are relevant for the needs of the agro-industrial complex, where constant modernization of existing equipment and the development of new designs that increase productivity are required. The printing of structural elements of a liquid ring vacuum pump, which is used in the processing of agricultural raw materials, is considered. Prototypes of structural elements of a single-stage liquid ring vacuum pump were manufactured on a Flying bear ghost 5 3D printer (Fig. 1) using FDM technology.The most optimal set of printing parameters was determined by the method of layer-by-layer deposition modeling. The selected modes provide the required quality indicators of the liquid ring vacuum pump prototype. The following parameters are considered: layer height, extruder nozzle and desktop temperatures, airflow during printing, speed, infill percentage and the need for supports. The analysis of the influence of each of the parameters on the characteristics of the finished product was carried out. It has been established that in order to obtain these structural elements without serious defects with a minimum consumption of material and the shortest printing time, it is necessary: the height of each layer is 0.2 mm; extruder nozzle temperature 230 ºС; desktop temperature 100ºС; print speed 60 mm/s; the percentage of filling the model is 25%. Also, for the best quality of the prototypes, constant airflow was used and supports were used in places where the model has significant protrusions. The manufactured prototypes allow evaluating the design features of the developed liquid ring vacuum pump and conducting simple tests for its performance in order to further eliminate the identified shortcomings of the prefabricated structure.
Pengaruh Manajemen Laba Akrual, Manajemen Laba Riil dan Intensitas Persediaan terhadap Agresivitas Pajak
Authors:   Politeknik Negeri Lampung, Lampung, Choirunnisa Riris
Published: November 2022

Abstract: Purpose : This study aims to determine the effect of accrual earnings management, real earnings management, and inventory intensity on tax aggressiveness in manufacturing companies in the consumer goods industry sector in Indonesia. Research methodology : The sampling method used is a purposive sampling technique with a sample of manufacturing companies in the consumer goods industry sector listed on the Indonesia Stock Exchange (IDX) in 2018-2019. The analytical tools used in This research is multiple linear regression analysis. Data were analyzed using SPSS version 22. Results : The results of this study indicate that accrual earnings management has no effect on aggressiveness, real earnings management has a negative effect on tax aggressiveness, inventory intensity has no effect on tax aggressiveness, and accrual earnings management, real earnings management and inventory intensity are tested together have a positive effect on tax aggressiveness. Limitations : This study only uses three independent variables while there are many other variables that can be used affect tax aggressiveness. Contribution : This research is expected to provide information for companies to be considered in making tax savings so that they do not tend to enter into tax aggressiveness action. Keywords: 1. Accrual Earnings Management 2. Real Earnings Management and Inventory Intensity on Tax Aggressiveness
Tendinţe în Economia Moldovei, nr. 46 (trim. II, 2022)
Authors: Stratan Alexandru , Ianioglo Alina , Ceban Alexandru , Timofei Olga , Popa Viorica , Iatisin Tatiana , Novac Alexandra , Colesnicova Tatiana , Ciobanu Mihail , Toaca Zinovia , Fala Victoria
Published: November 2022

Publicația este elaborată cu suportul financiar al proiectelor de cercetare din cadrul Programului de Stat (2020-2023): 1. Proiectul 20.80009.0807.16 Elaborarea instrumentelor economice noi de evaluare şi stimulare a competitivităţii agriculturii Republicii Moldova pentru anii 2020-2023. 2. Proiectul 20.80009.0807.21 Migrația, schimbări demografice și politici de stabilizare a situației. 3. Proiectul 20.80009.0807.22 Dezvoltarea mecanismului de formare a economiei circulare în Republica Moldova. 4. Proiectul 20.80009.0807.29 Perfecționarea mecanismelor de aplicare a instrumentelor inovaționale orientate spre creșterea durabilă a bunăstării populației Republicii Moldova. 5. Proiectul 20.80009.1606.38 Evaluarea multidimensională și dezvoltarea ecosistemului antreprenorial la nivel național și regional în vederea impulsionării sectorului IMM în Republica Moldova.
Organization of diagnosis, surgical treatment and anesthetic support of secondary and tertiary hyperparathyroidism
Authors: Diachuk Dmytro , Tkachenko Rymma , Denysenko Anatolii , Chernii Volodymyr , Kuryk Olena
Published: November 2022

The monograph systematizes and describes modern approaches to the organization of medical care for patients with hyperparathyroidism against the background of chronic renal failure by a multidisciplinary team. The monograph is intended for scientists, nephrologists, surgeons, anesthesiologists, endocrinologists, therapists, pathologists, and interns.
Small Farmers’ Agricultural Loan Repayment Performance in Southern Ethiopia
Authors: Nadew Merihun , Senapathy Marisennayya
Published: November 2022

Rural farmers often look for credit facilities during the agricultural seasons and other constructive activities. However, most developing countries face the severe challenges of getting enough financial support through proper means. Providing low-cost, efficient credit services and recovering a high percentage of loans granted are the ideal aims in rural finance. On the other hand, low repayment performance discourages the lender from promoting and extending credit. Therefore, thoroughly investigating the various aspects of loan defaults is vital for policymakers and lending institutions. Therefore, this thesis was concerned with analyzing factors affecting the agriculture loan repayment performance of borrowers of agricultural lending institutions of the study area and the effect of credit risk on lending institutions’ financial performance. The study was based on secondary data from the District and Zonal Microfinance Institutions and Marketing and Cooperative development departments. Primary data were collected from 140 smallholder agriculture credit borrower farmers. The data were used to describe the respondents' socio-economic, demographic and attitudinal characteristics and institutional factors. T-test and chi-square were used to measure the potential power of continuous and discrete variables in differentiating non-defaulters and defaulters. The logit model was also used to identify variables that determine loan repayment performance. Of 16 explanatory variables, only five: household income, business development services made by the lending institutions, loan disbursement time (suitability of loan disbursement time), loan diversion status of borrowers and celebration of social ceremonies were statistically significant factors affecting repayment performance of agriculture loan of lending institutions. The partial marginal effect analysis shows that borrowers' loan diversion status is the most critical factor among the other five variables. Based on the findings, policy implications were drawn for improving loan repayment performance and sustainability of credit services and institutions in the study areas.
Zeitmanagement und Selbstorganisation in der Wissenschaft
Authors: Riedenauer Markus , Tschirf Andrea
Published: November 2022

Wie kann meine wissenschaftliche Arbeit erfolgreich sein und mein Leben insgesamt gelingen? Wie sind gängige Methoden der Selbstorganisation anzupassen, um bei den diversen Aufgaben in Forschung, Lehre, Betreuung Studierender, in der Administration und Führung konkret zu helfen?
In diesem Buch werden Methoden des Projekt-, Zeit- und Selbstmanagements, der Stressprävention und Motivationssteigerung für die Herausforderungen in der Wissenschaft adaptiert. Hinweise zu Lebensplanung und Selbstentwicklung dienen einem gelingenden Leben, das alle persönlichen Werte integriert.
Für die Autoren ist ein Lebens- und Arbeitsstil in der Wissenschaft, der allein den beruflichen Erfolg kennt, nicht die einzige Möglichkeit. Gerade bei unsicheren Karrierebedingungen erscheint ein ganzheitlicher Ansatz als die beste Option.
Robust Quantum Feature Selection Algorithm
Authors: Zhang Shichao , Li Jiaye , Xu Hang , Yu Hao , Shi Jinjing
Published: November 2022

High dimensional data has been a notoriously challenging issue. Existing quantum dimension reduction technology mainly focuses on quantum principal component analysis. There are only a few works on the direction of quantum feature selection algorithm which they are not robust. Also, there are few quantum circuits designed for feature selection, in which some steps are not quantized yet. For example, existing quantum circuits cannot solve the objective function based on sparse learning. To deal with these issues, this paper proposes a robust quantum feature selection by designing a new quantum circuit. Specifically, the sparse regularization term and least squares loss are first applied to construct the proposed objective function. And then, six kinds of quantum registers and their initial states are prepared. In addition, quantum techniques, such as quantum phase estimation and controlled rotation, are employed to construct an alternating iterative quantum circuit to obtain the final quantum state of the feature selection variable. Finally, a series of experiments are conducted to verify that the proposed algorithm can accurately select important features and has good robustness.

 
DraG4Rec A Symmetrical View of User Preference and Item Popularity
Authors: Gao Jingyu , Hou Chaohuan , Ying Sancong
Published: November 2022

Utilizing user-item interaction dynamics is crucial for providing efficient and precise sequential recommendations (SR). Besides earlier works based on Matrix factorization, Markov Chains, and RNNs, GCNs taking advantage of attention mechanism and Knowledge-enhanced NNs digging heterogenous auxiliary information recently made improvements. However, there still exist some problems: 1) existing works mainly focus on capturing user preference without considering the importance of item popularity; 2) introducing too much auxiliary information denies the independence of interaction behavior; 3) favoring high-order chronological history with heavy memory while ranking score referring different bias is unappreciated. To tackle these problems, we proposed DraG4Rec (Dual rating enhanced attention-based GCN for Recommendation), which makes symmetry of user preference and item popularity manifest great value. Specifically, we first merge ranking score, time, and position encoding for user/item representation in a bipartite graph. Then, an edge-view message-passing mechanism is imported into the attention-based GCN to use implicit 2-order historical information with less memory. Finally, user preference and item popularity are learned jointly. Extensive experiments on dense and sparse real-world datasets demonstrate the superior performance of our framework over state-of-the-art baselines regarding two commonly-used metrics: i.e., Recall and NDCG. The ablation study illustrates the boosting effect of different components. 
Circulating eosinophil levels and lung function decline in stable chronic obstructive pulmonary disease: a retrospective longitudinal study
Authors: Ferrari1 Marcello , Pizzini1 Michela , Cazzoletti2 Lucia , Ermon1 Valentina , De Marchi1 Sergio , Giuseppe Dalle Carbonare1 Luca , Crisafulli1 Ernesto , Spelta1 Francesco
Published: November 2022

Objective: Whether blood eosinophils (bEOS) in chronic obstructive pulmonary disease (COPD) are associated with disease progression is a topic of debate. We aimed to evaluate whether the differential white blood cell (WBC) count, symptoms and treatment may predict lung function decline and exacerbations in COPD patients. Methods: We retrospectively examined stable COPD patients with a minimum follow-up of 3 years at our outpatients' clinic. We collected information about lung volumes (FEV1, FVC), the total and differential WBC count, acute exacerbations of COPD (number in the 12 months before the beginning of the study=AE-COPD-B, and during the follow-up=AE-COPD-F), smoking status and treatment. FEV1 decline and AE-COPD-F were described by using a generalized linear model and a 2-level random intercept negative binomial regression, respectively. The models included eosinophil and neutrophil counts as potential predictors and were adjusted by sex, age, smoking status, AE-COPD-B, treatment with bronchodilators and inhaled corticosteroids (ICS). Results: Sixty-eight patients were considered, 36 bEOS- (<170 cells/µL, the median value) and 32 bEOS+ (=170 cells/µL). ?FEV1 was higher in bEOS+ than bEOS- (34.86 mL/yr vs 4.49 mL/yr, p=0.029). After adjusting for potential confounders, the eosinophil count was positively (ß=19.4; CI 95% 2.8, 36.1; p=0.022) and ICS negatively (ß=-57.7; CI 95% -91.5,-23.9; p=0.001) associated with lung function decline. bEOS were not found to be associated with the number of AE-COPD-F. Conclusion: In stable COPD patients, a higher level of blood eosinophils (albeit in the normal range) predicts a greater FEV1 decline, while ICS are associated with a slower progression of airflow obstruction.