bluuebunny/crossref_metadata_2025 huggingface dataset:
Using Network and Complexity Theories to Understand the Functionality of Referral Systems for Surgical Patients in Resource-Limited Settings, the Case of Malawi
Authors: Pittalis Chiara , Brugha Ruairí , Bijlmakers Leon , Cunningham Frances , Mwapasa Gerald , Clarke Morgane , Broekhuizen Henk , Ifeanyichi Martilord , Borgstein Eric , Gajewski Jakub
Published: January 2022

Background: A functionally effective referral system that links district level hospitals (DLHs) with referral hospitals (RHs) facilitates surgical patients getting timely access to specialist surgical expertise not available locally. Most published studies from low- and middle-income countries (LMICs) have examined only selected aspects of such referral systems, which are often fragmented. Inadequate understanding of their functionality leads to missed opportunities for improvements. This research aimed to investigate the functionality of the referral system for surgical patients in Malawi, a low-income country. Methods: This study, conducted in 2017-2019, integrated principles from two theories. We used network theory to explore interprofessional relationships between DLHs and RHs at referral network, member (hospital) and community levels; and used principles from complex adaptive systems (CAS) theory to unpack the mechanisms of network dynamics. The study employed mixed-methods, specifically surveys (n=22 DLHs), interviews with clinicians (n=20), and a database of incoming referrals at two sentinel RHs over a six-month period. Results: Obstacles to referral system functionality in Malawi included weaknesses in formal coordination structures, notably: unclear scope of practice of district surgical teams; lack of referral protocols; lack of referral communication standards; and misaligned organisational practices. Deficiencies in informal relationships included mistrust and uncollaborative operating environments, undermining coordination between DLHs and RHs. Poor system functionality adversely impacted the quality, efficiency and safety of patient referral-related care. Respondents identified aspects of the district-RH relationships, which could be leveraged to build more collaborative and productive inter-professional relationships in the future. Conclusion: Multi-level interventions are needed to address failures at both ends of the referral pathway. This study captured new insights into longstanding problems in referral systems in resource-limited settings, contributing to a better understanding of how to build more functional systems to optimise the continuum and quality of surgical care for rural populations in similar settings.
Donors’ Participation in Iran’s Health System: Challenges and Solutions
Authors: Mosadeghrad Ali Mohammad , Tajvar Maryam , Ehteshami Fatemeh
Published: January 2022

Background: Philanthropic activities play an important role in health systems. Donors contribute to financing, generating resources, and providing healthcare services in Iranian health system. However, they face many challenges. This study aimed to identify barriers to donors’ participation in the Iranian health system and to provide solutions. Methods: This qualitative study was performed using semi-structured interviews with 38 donors and 26 policy-makers and managers in the social affairs department of health ministry and medical universities in 2018. In addition, document analysis was performed and the relevant data were extracted. Thematic analysis was used for data analysis. All ethical considerations were followed in this research. Results: Insufficient structures, poor communications, low trust, ineffective working processes, bureaucracy, insufficient senior managers’ support, weak legal support and poor monitoring were the most important challenges for donors’ participation in the Iranian health system. Effective donor participation in the health system requires the creation of an appropriate system including the right structures, processes, culture, and management. The necessary changes must be planned, led and monitored to promote donors’ participation in healthcare. A conceptual model was developed to strengthen donors’ participation in the health system. Conclusion: Iranian donors face structural, procedural, cultural, and managerial challenges when financing the health system, generating resources, and providing health services. Policy-makers and managers should tackle these challenges and adopt strategies to reinforce donors’ participation in the health system. Planning, organizing, leading, monitoring, evaluation, transparency, accountability, and a commitment to meet donors’ needs are necessary for successful philanthropy initiatives in the health sector.
Cultivo agroecologico del banano y plátano / Agroecological culture of the banana crop
Authors: Ricardo Francisco Ángel Simón
Published: January 2022

Las musáceas, (Musa spp.), son cultivos tropicales de importancia económica de toda la región tropical y subtropical se comercializa en fresco, como fruta, conocido como banano y como producto procesado, conocido como plátano vianda, representando importantes rubros en términos económicos para la mayoría de países productores, al generar cuantiosos ingresos financieros y  fuentes permanentes y transitorias de trabajo para una gran parte de la población mundial, contribuyendo con la seguridad y soberanía alimentaria de países en vía de desarrollo como alimentos básicos en la dieta diaria de millones de personas. No obstante, estos cultivos no escapan a la voracidad de plagas y enfermedades que detrimentan seriamente sus producciones; entre ellas los ácaros, picudos, y nematodos; así como fitopatógenos productores de las peores enfermedades como Moko bacteriano, Sigatoka negra y Mal de Panamá; por ello el interés en particular del presente resultado científico de contribuir al conocimiento sobre el manejo agroecológico de su problemática fitosanitaria cardinal expuestas durante la celebración del I Seminario internacional REDUPLATANO Ecuador 2018.
Compostos secundàrios de anona na proteçâo de plantas contra pests / Secondary compounds of anona in plant protection against pests
Authors: Astudillo Eduardo Aguilar , Morales Carlos Joaquín Morales , Bran Reynerio A. Alonso , Hernández Cesáreo Rodríguez , Castillo Fabiola Aguilar
Published: January 2022

En tiempos remotos las culturas antiguas utilizaron los compuestos secundarios de las plantas para el manejo de las plagas de los cultivos. Actualmente surge la necesidad de rescatar estos conocimientos como una alternativa al uso de plaguicidas sintéticos. Las anonáceas presentan principios activos que causan repelencia, disuasión de la alimentación, disuasión de la oviposición y reguladores de crecimiento en los insectos, esta actividad se debe principalmente a la presencia de las acetogeninas. En este sentido, se aplicaron concentraciones de 0.000001, 0.00001, 0.0001, 0.001, 0.01, 0.1 y 1.0% con cuatro repeticiones de extractos crudos de anona amarilla Annona lutescens extraídos con metanol, etanol, diclorometano y hexano, para determinar su efecto repelente en adultos de mosca Trialeurodes vaporariorum comparados con los testigo químico y absoluto. La unidad de muestreo consistió en introducir 20 adultos en un vaso transparente de 1 L, conteniendo una hoja de tomate tratada con el extracto y dosis respectiva colocado en un frasco gotero de 10 mL con agua de la llave, los datos de moscas posadas se tomaron a las 3, 6, 12, 24, 48 y 72 h y por diferencia se calculó los no posados, obteniendo como resultado que las siete concentraciones de los cuatro extractos crudos de anona causaron de 75.7 a 93.0% de repelencia de los adultos de mosca blanca de las 3 a las 72 h después de la aplicación. Por otro lado, desde el inicio hasta el final de las observaciones los extractos crudos de anona causaron mayor repelencia que el producto químico. Esto hace sugerir el uso del extracto de anona en el manejo de adultos de mosca blanca.
Metales pesados en el ostión Crassostrea virginica en la laguna Machona en Tabasco, México / Heavy metals in the oyster Crassostrea virginica in the Machona lagoon in Tabasco, Mexico
Authors: Alcudia Jessica Mayo , Manzano Nancy Patricia Brito , Falcón Perla Montserrat Vargas , Vázquez Armando Gómez , Rodríguez José Bernat
Published: January 2022

El objetivo de la presente investigación fue determinar el contenido de metales pesados en el ostión Crassostrea virginica proveniente de la Laguna Machona, Tabasco, analizadas por cuadriplicado por Espectrofotometría de Absorción Atómica. Debido a que la laguna Machona se localiza en un área donde se encuentran factores que provocan contaminación: actividad petrolera, azucarera, ganadera, agrícola, descargas domésticas, resulta necesario conocer las concentraciones de metales pesados que son causantes de diversos problemas no solo para la salud sino también en el funcionamiento de los ecosistemas. Para ello, se evaluaron las concentraciones de Cobre (Cu), Cromo (Cr), Zinc (Zn) y Plomo (Pb) durante un período de un año. Para los tres bancos analizados, los metales que presentaron las mayores concentraciones promedio fueron el Cobre y el Zinc: para Don Hermelindo el Cu (214.61 µg g-1) y Zn (423.96 µg g-1), para Los Jiménez, Cu (150.57 µg g-1) y el Zn (471.64 µg g-1), mientras que para Shishal se registraron valores de Cu de 97.06 µg g-1 y los de Zinc de 260.98 µg g-1. Con respecto al contenido de Plomo en los tres bancos muestreados, el mayor valor promedio se registró en el banco Los Jiménez con 7.24 µg g-1; por su parte el Cromo, presentó la mayor concentración (11.14 µg g-1) en el banco Don Hermelindo. El contenido de Cromo en los tres bancos ostrícolas, fue Don Hermelindo Los Jiménez Shishal. El contenido de Plomo fue superior a los límites permisibles (NOM-001-ECOL-1996 y NOM-027-SSA1-1993).
Correlação entre a porcentagem de glóbulos vermelhos, teor de hemoglobina e saturação de oxigênio tecidual em cães anêmicos / Correlation between the percentage of red bood cells, hemoglobina contente and tissue oxygen saturation in anemic dogs
Authors: Paião Guilherme Costa , Sauniti Thainá Pires dos Santos , Santos Bianca Fonseca dos , Vieira Laís Orsi , Lot Rômulo Francis Estangari
Published: January 2022

As células vermelhas também chamadas (hemácias, eritrócitos, glóbulos vermelhos), são as células mais numerosas nos mamíferos, possuem um formato bicôncavo, e tem como função o transportam oxigênio (O₂), dióxido de carbono (CO₂), assim como, transporte e tamponamento de íons hidrogênio (Hᶧ). A hemoglobina é uma proteína globular responsável por carrear o oxigênio pelo organismo, isto só é possível devido a sua estrutura ser capaz de fazer a ligação com a molécula de oxigênio e carrear ela até aos tecidos, sabendo se que a quantidade diminuída de glóbulos vermelhos no sangue, consequentemente diminui  quantidade de hemoglobina e por um efeito coordenado se diminui a oferta de oxigênio para os tecidos (hipóxia), a diminuição de oferta de oxigênio para os tecidos pode causar danos celulares que podem se tornar irreversíveis. O presente estudo tem como objetivo avaliar os caninos com eritrócitos baixo, analisando a concentração de hemoglobina e através de uma correlação indicar o nível para indicar uma transfusão sanguínea, afim de minimizar os danos causados pela hipóxia no organismo.
AN EDUCATIONAL GAME APPLICATION TO ASSIST THE COMMUNITY IN REMEMBERING ROAD DIRECTIONS AND PLACES IN PALEMBANG
Authors: Angelia Nadya , Jannah Miftahul , Valentino Albert Amadeus , Liu Michelle , Ibrahim Ali
Published: January 2022

Visuospatial processing is one of the important aspects of everyday life, whether it is to travel or to recognize the location of objects around. Visuospatial processing can be improved in various way, one of which is by using repetition. WorldVenture app was created to help its users improve their visuospatial capability by remembering landmarks in the city where they live. WorldVenture was created using flutter framework with five steps, namely literature study, data and information collection, application designing, testing, and evaluation. This app will have three main features: Flashcard, Quiz, and Notes. WorldVenture testing result, using questionnaires, showed 64,5% people out of 30 respondents rated WorldVenture excellent for improving visuospatial capabilities and as many as 35.5% of respondents rated it good.
DEVELOPMENT OF MANUFACTURING INVENTORY MANAGEMENT SYSTEM USING MATERIAL REQUIREMENT PLANNING METHOD
Authors: Rahmawati Ami , Saputra Rizal Amegia , Yulianti Ita
Published: January 2022

Inventory has an important role in business activities. This is because inventory has an effect on changes in the production market and anticipates price changes in the demand for many goods. PT. Barkah Jaya Mandiri is a company engaged in manufacturing where the management of inventory at the company is still done conventionally. This causes various problems such as the occurrence of discrepancies in the stock of goods, discrepancies in data and final reports as well as obstacles in the production process in the event of a shortage or excess of raw materials. (Material Requirement Planning) in order to overcome the problems that occur in the company. The combination of the SDLC model and data collection techniques including observation, interviews and literature study were also carried out in this study in order to achieve the system that will be built to suit the targeted needs. With this system, the management of inventory data at this company can be done easily and accurately and save time compared to the previous system, so that the procurement of manufacturing raw materials is optimal and employee performance is better.
PENGARUH MOTIVASI KERJA DAN KEDISIPLINAN TERHADAP KINERJA GURU SEKOLAH DASAR NEGERI DI KELURUHAN BINTARA KECAMATAN BEKASI BARAT
Authors: Pratama Yudha , Herbayu Tatag
Published: January 2022

To determine the effect of work motivation and discipline on teacher performance SDN Kelasional Bintara, West Bekasi District. Descriptive research methods, verification analysis.. Primary data types by giving questionnaires to teachers, simple linear regression analysis method and multiple. Result simultaneous work motivation and discipline have a significant effect on the performance of teachers in SDN Kelasional Bintara, West Bekasi District, while partially both work motivation and discipline have a positive and significant effect on the performance of teacher employees.
O rosto da multidão e a sobrevivência das imagens da classe trabalhadora
Authors: Zanetti Negrini Márcio , Gutfreind Cristiane Freitas
Published: January 2022

As imagens históricas das grandes mobilizações de trabalhadores durante os governos de Getúlio Vargas estão presentes na contemporaneidade por meio do cinema, que atua como um grande arquivo imagético e sonoro para a produção de saberes sobre vivências políticas e sociais. Nesse sentido, analisamos imagens do filme Getúlio Vargas – glória e drama de um povo, dirigido por Alfredo Palácios e lançado em 1956. O longa-metragem caracteriza-se pela utilização de imagens de arquivo provenientes de cinejornais produzidos ao longo dos diferentes governos de Getúlio Vargas. Elencamos o rosto da multidão como procedimento de análise do filme, que mostra a emoção como prática política da classe trabalhadora reunida em grandes atos públicos. As imagens observadas em Getúlio Vargas – glória e drama de um povo sobrevivem ao agenciar inspirações de resistência política no presente.
Da tela da TV para as redes sociais digitais: o transbordamento do Jornal da Record no TikTok
Authors: Kneipp Valquiria Aparecida Passos
Published: January 2022

Diante do cenário de convergência e midiatização, telejornais reconfiguram o conteúdo exibido pela TV para as redes sociais digitais e plataformas. Com o objetivo de investigar este cenário contemporâneo dos telejornais e identificar novas práticas sociais no telejornalismo, esta pesquisa, tendo como objeto de estudo o Jornal da Record, busca responder como e por que o telejornal adotou o TikTok como parte da estratégia editorial. De acordo com o objeto empírico e o contexto do fenômeno analisado, este estudo exploratório se caracteriza como um estudo de caso. Com a análise foi possível identificar que a utilização do TikTok é uma estratégia de transmidiação para evitar a queda da audiência da TV aberta e para atrair o público jovem, que prefere as redes sociais digitais para obter informações.
Le spectateur mobile: une entrevue avec Roger Odin
Authors: Queiroz Lambach Claudia Maria
Published: January 2022

Roger Odin est l'un des plus importants représentants de la pensée sémiologique française. Tout au long de sa carrière, il a construit un modèle de communication tentant d'articuler une approche pragmatique et immanentiste, dans un modèle qu'il qualifie de sémio-pragmatique. Odin est professeur émérite à l'Université Sorbonne Nouvelle – Paris 3 et il a été directeur de l'Institut de recherche sur le cinéma et l’audiovisuel (IRCAV). Parmi les divers thèmes de recherche sur lesquels il travaille, tels que : le cinéma, la télévision, le cinéma amateur, les films de famille, notamment, Odin explore aussi la production audiovisuelle réalisée avec un téléphone mobile.

Depuis 2012, l'université organise une série de séminaires académiques annuels tels que le colloque international organisé par le groupe de recherche « Mobile et création ». L'objectif de ces rencontres est d'échanger sur la création audiovisuelle tournée avec les nouveaux supports de communication. De nombreux sujets à cet égard ont déjà été abordés. En décembre 2020, le colloque intitulé « Pandemix.mob » s’est concentré vis-à-vis de la pandémie.  À cette occasion, Odin a commencé son séminaire en utilisant un livre-masque (Fig. 1) qui était un objet créé afin d’affronter la réalité. Il a également présenté un court-métrage, « Méfiez-vous de la crypte », concernant ses propositions, réalisé avec un téléphone mobile pendant le confinement dans une ferme en France. C'est à propos de ce travail et de cette expérience avec le téléphone mobile que nous aimerions l’interviewer.
Na contramão de uma conexão constante: uma revisão bibliográfica sobre o fenômeno de desconexão digital
Authors: Da Trindade Thiago Álvares , Da Silva Sandra Rúbia
Published: January 2022

Ainda que não seja uma realidade universal, o acesso à internet cresceu no Brasil nos últimos anos permitindo a dissolução de barreiras geográficas e o acesso à informação. Todavia, o desejo de diminuir o consumo de internet e das telas ainda compõe os anseios de alguns indivíduos. Encara-se esse estilo de vida como sendo marcado pelo fenômeno do detox digital, como é observado por alguns pesquisadores (SYVERTSEN et al., 2019). As motivações para uma vida menos conectada são distintas. Por isso, este artigo objetiva realizar um sobrevoo sobre o fenômeno e suas derivações, a fim de analisar como este vem sendo observado e/ou ignorado pelo cenário científico em diferentes campos do conhecimento. Ao longo desse panorama, percebe-se que algumas perspectivas se sobressaem nas produções científicas, tais como trabalho, produtividade, saúde, desigualdade e autenticidade.
A perspectiva da moralidade nos games de conteúdo violento
Authors: Caniello Angelica , De Souza Luciana Coutinho Pagliarini
Published: January 2022

O presente artigo objetiva refletir sobre como a ética e a moral contemporâneas transparecem nos discursos sobre a violência atrelada aos games, sendo parte de uma pesquisa, em processo, que tem por tema a violência nos games sob a perspectiva dos efeitos de sentido no discurso dos jogadores. Foram resgatados alguns exemplos de games banidos por serem considerados ultrajantes, e de outros cuja violência é aceita e até desejável. Toma-se por base teórica Han Byung-Chul (2017) para a compreensão das transformações das manifestações da violência na atualidade. Também são referenciados Gilles Lipovetsky e Yves La Taille, que respaldam ponderações sobre o panorama da sociedade contemporânea. Para tratar do jogo enquanto motivador de um sentimento de tensão e alegria, baseia-se nas ideias de Johan Huizinga (1999).
A agonia da comunicação na era mediática: sobre vínculos, logros e o pornográfico
Authors: Silva Tiago Da Mota e , Ciquini Fabio
Published: January 2022

O presente artigo propõe uma reflexão acerca da noção de vínculo para a ciência da Comunicação. Argumenta-se que a construção desta noção é fundamental para uma mudança de paradigma nos estudos da comunicação, no sentido de abandonar uma abordagem tecnicista e abraçar outra, que leve em consideração os fluxos emocionais, afetivos e imaginários dos fenômenos comunicacionais. Por meio de revisão bibliográfica, busca-se articular os conceitos de vínculo, imaginário e, por fim, procura-se entender uma noção de logro, um hiperestímulo vinculativo, sobre os quais operam as mídias em seus usos pornográficos do imaginário.
Optimization of the effect of copper electrodes on the removal efficiency of 4-clorophenol from aqueous solution by electrocoagulation
Authors: Kurtoglu Akkaya Gulizar , Öden Muhammed Kamil
Published: January 2022

In this study, the investigation of 4-clorophenol (CP) removal from aqueous solutions using copper electrodes by electrocoagulation (EC) process was done. The effects of various experimental parameters such as pH, current density and exposure time, which affect the EC process, on 4-CP removal were investigated. To optimize the process, response surface methodology (RSM) Box Behnken Design was used by MINITAB program, a series of experimental sets were obtained and carried out. Afterward, 4-CP removal was analyzed and calculated. Results were entered into the MINITAB program as a response. At the end of the optimization, optimum operating conditions were determined as 74 mA/cm2, 45 min, 4.24 for current density, exposure times and pH, respectively. When the results were evaluated, approximately 92% phenol removal efficiencies were obtained. Additionally, according to the model results, it was understood that the factors with the greatest effect on 4-CP removal were the exposure time and current density and these had a linear effect, but the pH value did not have a significant effect.
Lime stabilization of clayey landfill base liners: Consolidation behavior and hydraulic properties
Authors: Karademir Tanay
Published: January 2022

Lime soil treatment is a chemical process in which lime (quicklime, hydrated lime or lime slurry) is mixed with the in place subgrade soil and a chemical reaction takes place. The lime reacts with the clay particles in the soil to create a cementitious matrix. The design of landfill base liners including a clay layer as a fluid barrier (i.e. water-resistant impervious layer) requires a neat engineering approach considering, in particular, consolidation behavior as well as hydraulic properties of the clay contained. For sake of safe and stable design of such baseliners under the landfills, the reduction of consolidation settlement in clay when subjected to the accumulated waste load (i.e. superposed action) during operation as well as the accomplishment for ensuring the waterproof of those composite base liners (comprised of multiple different layers) not to allow the penetration of the contaminated water - produced as a result of exothermic reactions occurring in the waste body in landfills – by enabling enhanced isolation from the natural ground is of importance. In light of this, in order to address those two most important design concerns (i.e. Consolidation and Hydraulic Properties of Clay) as well as to in an at- tempt to develop an enhanced clay layer system for landfill baseliners that has a greater bearing capacity (i.e. load resistance), and hence, more robust against settlements, and additionally, possessing improved hydraulic properties by being relatively more water-resistant and greatly impermeable, a series of consolidation tests were performed in the laboratory at different lime contents (lime/lime-clay mixture proportions by weight: 0%, 10%, and 20%) on clay specimens to investigate the stabilization and improvement of clayey landfill baseliners. Lime treatment on clay specimens has shown as a result of the experimental program that the strength of clay against loading improves, and further, exhibits less vertical deformation (settlement) under the load owing to an increase in lime content. Moreover, the clay becomes highly impermeable and displays substantially larger water-resistant properties because of increased lime mass proportion in clayey soil. The findings of the experimental program demonstrate that lime stabilization of the clayey soils in landfill baseliners will benefit the bearing capacity and the imperviousness (water tightness) engineering design properties as compared to standard composite multi-layered landfill baseliner systems.
Conciliar el boom con el interés general. La intervención estatal ante la expansión de la soja en Chaco
Authors: Heredia Mariana , Pérez Marianela
Published: January 2022

La soja constituye en Argentina el producto emblemático del boom de los commodities. Analizando su expansión en la provincia de Chaco, este trabajo estudia cómo grupos sociales y autoridades intervinieron para conciliar este boom con el interés general. Basado en material documental, estadístico y testimonial, describe la construcción de problemas públicos y las intervenciones estatales orientadas a evitar la concentración de la tierra, proteger a los productores algodoneros, preservar el medio ambiente y el bosque nativo, regularizar a los trabajadores rurales y retener con impuestos parte de la riqueza generada. El balance indica que no puede achacarse pasividad a las autoridades sí, en cambio, falta de consistencia y efectividad en la implementación de las distintas políticas.
Ministros y ministerios en los comienzos del Estado argentino. Composición y rotación de los gabinetes presidenciales (1862-1898)
Authors: Abal Medina Juan , Eberhardt María Laura , Ariza Laura
Published: January 2022

Este artículo forma parte de una investigación más amplia que se propone relevar y analizar la composición y rotación de los gabinetes de ministros de los titulares del Ejecutivo Nacional argentino en el período 1862-1952. En este trabajo abordaremos específicamente el primer tramo de dicho período, que va de 1862 a 1898, en el cual tanto la cantidad (cinco) como las áreas de los ministerios (Interior; Relaciones exteriores; Justicia, culto e instrucción pública; Guerra y marina; y Hacienda) estaban prefijadas por la Constitución nacional. El objetivo perseguido es descriptivo y consiste en dar cuenta acerca de qué ministros fueron designados a nivel nacional en la Argentina, por qué presidentes, al frente de qué carteras, y por cuánto tiempo. Simultáneamente se formula una primera propuesta de índice para analizar en forma comparada el grado de estabilidad / inestabilidad de dichos gabinetes. La fuente principal de información son los Libros de Actas de Juramentos de los Miembros del Gobierno de la Nación Argentina, pertenecientes a la Escribanía General del Gobierno de la Nación.
Dependencia del Índice de Bonos de Mercados Emergentes en Sudeste Asiático
Authors: Gurrola-Ríos César , Bucio-Pacheco Christian , Santillán-Salgado Roberto Joaquín
Published: January 2022

El objetivo es analizar relaciones de dependencia dinámica en el riesgo-país del sudeste asiático, reconociendo un comportamiento
no-lineal, con dependencia asintótica y valores extremos. El método de investigación emplea el enfoque de cópulas para estudiar
los índices de bonos de mercados emergentes (EMBI, por sus siglas en inglés emerging market bond index) de China, Filipinas,
Indonesia, Malasia, Sri-Lanka y Vietnam entre febrero-2013 y marzo-2020. Los resultados empíricos confirman cambios variantes
en las estructuras de dependencia cuya dinámica se estima mediante ventanas rodantes de 252 días. Los hallazgos permiten
identificar los momentos de cambio de tales relaciones, así como reafirmar la supremacía regional del mercado chino. La
originalidad del estudio, al contemplar elementos característicos de series financieras en mercados emergentes, reside en que puede
servir en la elaboración de portafolios diversificados. El carácter subregional de la muestra utilizada limita la validez externa de las
conclusiones
Suplemento do v. 10 n. 4 (2021) - Caderno de Trabalhos completos da V Jornada de Línguas e Linguagens & I Jornada Internacional de Línguas e Linguagens
Authors: Trabalhos completos Anais:
Published: January 2022

Enfatizamos que os textos publicados em forma de suplementos não se configuram como "artigos publicados em periódico" e sim "anais de congresso publicados em periódicos".
Modelo institucional con perspectiva de ciclo de vida para el tratamiento de residuos orgánicos
Authors: Alanís Ramírez Claudia Ivett , Álvarez Arteaga Gustavo , Ávila Córdoba Liliana Ivette
Published: January 2022

El compostaje de residuos orgánicos es una práctica emergente en hogares e instituciones educativas que favorece la transferencia de conocimientos a conductas tendientes a minimizar los impactos ambientales y riesgos a la salud humana. La propuesta de investigación consistió en implementar un modelo de transición circular con perspectiva de ciclo de vida para promover el conocimiento adquirido a estudiantes de la Licenciatura en Ciencias Ambientales y la conducta ecológica en un entorno doméstico durante el confinamiento por la pandemia COVID-19. Las etapas del modelo son: generación, colecta, separación, tratamiento de compostaje y caracterización fisicoquímica. Como resultados se obtuvo que el proceso tuvo una eficiencia del 48 % con respecto al peso fresco y una calidad adecuada acorde a la normatividad oficial. La conducta ecológica adquirida en el grupo de estudiantes confinados en sus hogares, se evaluó mediante encuestas de percepción sobre acciones y actitudes realizadas con respecto al manejo doméstico de los residuos, arrojando un 59% como una experiencia exitosa. La perspectiva de ciclo de vida para el tratamiento de los residuos orgánicos orienta a contrarrestar el impacto ambiental, así como un enfoque de economía circular en la gestión integral dentro y fuera de la institución.
Educación ambiental para la sustentabilidad, una apuesta desde la pedagogía crítica y sentipensante
Authors: Alejandro García Saúl
Published: January 2022

El debate de la educación ambiental ha sido enmarcado en el marco teórico del desarrollo sostenible. Sin embargo, al ser cuestionado el modelo de desarrollo sostenible por el de sustentabilidad, de forma automática tiene una repercusión en otras disciplinas transdisciplinares como la educación ambiental. Ahora se habla de la educación ambiental para la sustentabilidad.

En este sentido, la sustentabilidad marcha bajo el principio epistémico de que se busca “sustentar la vida”, más que de “sostener la vida”, entonces podemos decir que hay un cambio paradigmático que indaga en otros pensares y otras con-ciencias “nuevas miradas” que buscan desde lo propio, desde la complejidad a entender- reaprender la naturaleza, y su relación con los seres humanos.

Bajo esta premisa un grupo de profesores del CEDeS (Centro de Estudios e Investigación en Desarrollo Sustentable) y de la Universidad Pedagógica Nacional 151 de Toluca, han venido trabajando desde perspectiva del buen vivir, la pedagogía critica un marco sustentado en el sentipensar de los pueblos originarios del Estado de México. El propósito de este trabajo es poner en consideración las bases epistémicas
Distribución potencial de aves amenazadas en Patagonia Argentina como herramienta para las políticas públicas
Authors: Buzzi Mariana Andrea , Quezada Mariana Lia , Roque Vilchis Luis Fernando
Published: January 2022

La pérdida de biodiversidad pone en evidencia el uso de tecnologías para la contribución en la toma de decisiones. Se elaboraron modelos de distribución potencial de aves seleccionadas en función de categorías de amenaza. Las especies amenazadas fueron: Chloephaga picta (cauquén común), Chloephaga policephala (cauquén real), Cyanoliseus patagonus (loro barranquero), Speculanas specularis (pato de anteojos) y Vultur gryphus (cóndor andino); en peligro: Pluvianellus socialis (chorlito ceniciento); y en peligro crítico: Podiceps gallardoi (macá tobiano). Se utilizó el MaxEnt para modelar nichos de especies. Los resultados mostraron que el promedio de los valores del AUC de los datos de prueba fue superior a 0.8, lo que indica modelos con buenas performances. Sería importante incorporar otros grupos funcionales y fortalecer las políticas públicas que colaboren en la protección de la biodiversidad. Estas acciones complementarían las líneas existentes.
Componentes psicoemocionales y humanísticos dentro de la educación universitaria ecuatoriana: un análisis desde la docencia
Authors: Tarqui Leonardo
Published: January 2022

The present hermeneutic phenomenological study is based on several experiential elements acquired over time in public and private universities in Ecuador. A series of behavioral and psycho-affective situations and phenomena present in the students were identified, which directly influence their motivational, mature, deontological, inclusive, and general aspects; sociocultural. The issues must be addressed and resolved, so that future professionals can contribute to the different areas of their expertise, with total delivery, morals, and ethics within their action, joining the continuous evolutionary gear of society. Some processes and changes experienced in higher education in the middle of the world have been mentioned in recent years. Books that affect the entire educational structure, including the teacher. It is noteworthy that current education must contain solid ethical and humanistic structural foundations and a high commitment to community service. On this path, the teacher will have to raise awareness about the psycho-emotional elements of the student, as long as this allows, considering him first as a human being, and later as a student.
ASSESSING THE SELF-PERCEIVED USE OF READING STRATEGIES IN ESL READING COMPREHENSION: A NEEDS ANALYSIS
Authors: Ting Pick Dew , Swanto Suyansah , Din Wardatul Akmam , Kamlum Kamsilawati
Published: January 2022

Despite great appreciation on the important roles played by metacognitive reading strategies in the attainment of comprehension, heightened prevalence of reading difficulties is depicted among Malaysian learners. Therefore, this study aimed at investigating the current status of self-perceived use of metacognitive reading strategies among the ESL learners in six secondary schools in one of the districts in Sabah. Utilizing an adapted version of Revised Metacognitive Awareness of Reading Strategy Inventory (MARSI-R), data was obtained from 274 ESL learners in the same district. Descriptive analysis was used to determine the mean scores of three sub reading strategies, namely global reading strategies, problem-solving strategies and support strategies. The findings revealed that despite being aware of the use of metacognitive reading strategies, little emphasis was given on optimizing the use of global reading and support strategies, resulting in only medium usage of these two strategies. Therefore, it may be concluded that the findings implied the need to develop a reading comprehension module that incorporates the use of metacognitive reading strategies within reading comprehension instruction to facilitate Malaysian ESL learners to improve their reading comprehension.
TEACHERS AND LEARNERS PERCEPTION: CASE STUDIES WITH CLIL FOR MILITARY UNDERGRADUATES
Authors: Amalanathan Enock
Published: January 2022

This paper is a preliminary report on the teachers’ and learners’ perception on case studies with CLIL program carried out during an EAP course in the National Defense University of Malaysia (NUDM). Content and Language Integrated Learning (CLIL) is relatively very little known in the military context. However recently researches have revealed that CLIL is becoming popular and widespread in many universities. Based on CLIL benefits and dual-focus approach, teachers and curriculum developers have adapted accordingly to their course objectives and requirements. On the other hand, the case study method is an active teaching and learning method which provides rich contextual information and opportunities for language learners to develop more possible ways to learn and use the language creatively and practically in various language situations. This paper discusses preliminary findings of an EAP course for undergraduates in NDUM where the case study method and Content and Language integrated Learning is collaborated. A total of 84 military cadets and 3 teachers from an EAP program participated in the study. The questionnaire items were structured for the students and semi-structured interviews were designed for the teachers. The overall results projected the students’ and teachers’ positive views about case study and CLIL pedagogy that contributed towards language achievement. The paper concludes with discussion highlighting key issues that remain to be addressed and outline direction for future research.
RESEARCH ON SHREDDED BIOMASS DRYING IN A VIBRATING FLUIDIZED BED DRYER
Authors: Pavel Ioan , Chirita Alexandru Polifron , Matache Gabriela , Popescu Alina Iolanda , Pavel Kati , Stefan Vasilica
Published: January 2022

The article presents aspects related to energy potential of the shredded biomass from agricultural secondary production, coming from maintenance operations to cutting trees and vines and an original solution of dryer with vibrating fluidized bed with continuous operation equipped with adjustments of the transit time of biomass in the dryer. Also, it was analysed the dynamic behaviour of the biomass tray as well as of a biomass particle for the variant of vibrating fluidized bed.
WORK MOTION STUDY OF PIVOT TYPE TRAILER OPERATION ON TWO WHEEL TRACTORS
Authors: Dhafir Muhammad , Idkham Muhammad , Safrizal Safrizal , Munawar Agus Arip
Published: January 2022

This study aims to analyze the pivot type trailer operation with an ergonomic approach and the necessary interventions required to minimize work risks. Data collection was carried out using questionnaires and video recordings of the operators when the tractors as well as trailers were being operated at various conditions such as track, load, speed, straight motion or turn. Based on the Range of Motion (ROM) analysis, it was discovered that while operating this pivot type trailer, the upper body segments, such as neck, shoulders, elbows and back of the operator, comfortably controlled the tractor. Meanwhile, in the lower body segments, such as the thighs and knees, the operator generally felt discomfort. Furthermore, the analysis of the operator's subjectivity perception showed that discomfort was felt at several segments of the upper and lower body, such as the hands and knees. Therefore, several ergonomic interventions are required to increase the comfort of operating this pivot type trailer.
THEORETICAL CONSIDERATIONS ON THE OPTIMIZATION OF THE WORKING PROCESS OF VARIABLE WIDTH PLOUGHS
Authors: Nuƫescu Cristian , Gageanu Iuliana , Cujbescu Dan
Published: January 2022

The paper presents theoretical research conducted for the optimization of the working process of variable width ploughs. Thus, were determined multivariable regression functions for the traction force of the plough with variable working function of the control parameters: working depth, working width and working speed. The use of these theoretical considerations of the optimal points sought lead to the opportunity of making assessments on the possibilities to conduct their experimental validation. Conditions for an experimental plan were formulated to highlight such optimal points and the theoretical results were validated through experiments.
THREE DIMENSIONAL SIMULATION OF OIL FLOW CHARACTERISTICS IN LUBRICATION SYSTEM OF ROTARY TILLAGE ENGINE
Authors: Gao Junxiang , Gao Xiaoliang , Zou Wei
Published: January 2022

Taking the lubrication system of rotary tillage engine as the research object, this paper makes a three-dimensional simulation study on the oil flow characteristics in the lubricating oil passage. The oil supply of the oil pump shall be greater than the circulating oil required by the lubrication system to ensure the lubrication of the rotary cultivator. Lubrication system is an important part to ensure the reliability and durability of rotary cultivator. The key component to achieve its performance is the oil pump. The geometric model of lubricating oil flow field in rotary tiller lubrication system is established by using FLUENT software. The results show that the pressure drop in the lubricating oil passage of the main bearing is the largest under the same working conditions. In the oil passage of the cylinder head, the pressure drop of the front main oil passage is the largest and the oil discharge is the largest. Add 1.6mm oil pump rotor on the basis of the thickness of the original oil pump rotor, the oil flow at the connecting rod nozzle reaches the flow index of the original rotary cultivator, and there is no cylinder pulling phenomenon of the rotary cultivator.
STUDY ON PRECISE FEEDING CONTROL OF DAIRY COWS BASED ON WIRELESS COMMUNICATION TECHNOLOGY AND DAIRY COW INFORMATION MANAGEMENT TECHNOLOGY
Authors: Li Bin , Ma Mingjun , Yang Chaoju
Published: January 2022

In order to improve the quality of modern dairy industry, it is an inevitable trend to implement intensive control feeding of dairy cows, which is also the development direction in the future. Different feeding methods have different important effects on the health of dairy cows. For example, calves grow and develop rapidly during lactation, change their physiological structure quickly, have strong plasticity, poor inversion and imperfect digestive function. In the production of dairy farms, the scientific feeding mode of calves indirectly affects the overall benefits of dairy farms. Therefore, aiming at the above problems, this paper studies how to accurately control the quality of dairy cows. A cow precise feeding control system based on wireless communication technology and cow information management technology is studied, which solves the problems of wireless information transmission, automatic and accurate cow identification and dual-mode operation of feeder, and ensures the accurate supply of cow concentrate.
DESIGN AND EXPERIMENT OF CENTRIFUGAL COLLISION TEST DEVICE FOR MILLET AND SWEET BUCKWHEAT GRAIN
Authors: Sun Jingxin , Yang Liqin , Xu Baohui , Guo Yuming , Cui Qingliang , Zhang Yanqing
Published: January 2022

This critical collision damage force of millet and sweet buckwheat grain and the shelling force of shelled granular materials are important basic data for research of threshing and shelling technology and equipment. In order to master the linear velocity and collision force of grain with different moisture content when collision damage occurs, a centrifugal collision test device is designed. Based on the dynamic and kinematic analysis of grain in the centrifugal rotary table, the collision force between grain and steel plate was measured by PVDF piezoelectric pressure sensor and data acquisition system. The results showed that: under the same moisture content, the higher the rotational speed, the higher the grain crushing rate; at the same rotational speed, with the increase of moisture content, the crushing rate first decreased and then increased. When the moisture content of Jingu-21 and Yuqiao-4 is 19.7% and 17.8%, respectively, the grain crushing rate was the lowest. In terms of the anti-collision ability of grain, the optimum moisture content of threshing is between 19.7% and 21% for millet. For sweet buckwheat, the optimum moisture content of threshing is 17.8% ~19%, while the optimum moisture content of shelling by centrifugal sheller is about 11%. The faster the rotational speed of centrifugal rotary table is, the greater the linear speed of grain is, and the greater the collision force is. When the linear velocity of grain was 8.32 m/s and 11.30 m/s respectively, the millet grain moisture content was 11.1% and 20.9% respectively, damage began to appear, and the corresponding collision force was about 5.51 N and 10.6 N, respectively. When the linear velocity of grain was 8.32 m/s and 11.30m/s respectively, and the moisture content was 11.1% and 22.8% of the sweet buckwheat grain respectively, damage began to appear, the corresponding collision force was about 8.92 N and 12.79 N, respectively. When the rotating speed of rotary table was 910 r/min, the linear speed of grain was 27.05 m/s, the crushing rate of millet and sweet buckwheat grain in harvest period were 56.30% and 63.76%, respectively, and the crushing rate of millet and buckwheat grain with 11.1% moisture content were 86.27% and 89.4%, respectively. The research results can provide theoretical basis for design and optimization of millet and sweet buckwheat combine harvester, threshing device and shelling device.
OPTIMUM WORKING CONDITIONS FOR VARIABLE WIDTH PLOUGHS
Authors: Cardei Petru , Nuţescu Cristian , Matache Mihai , Cristea Oana
Published: January 2022

In this paper, a few assessments of the optimal parametric combinations in the operating regime of agricultural aggregates with ploughs of variable width are made. The starting point was from a classic expression of the tillage draft force required for traction. In order to find optimal points, some problems of constrained extreme have been formulated. Extremes provided by the optimal working width and speed have been found. Such optimal points have existed in the literature, for about half a century. Using these theoretical estimates of the optimal points sought, assessments of the possibilities for their experimental validation were made. Basic conditions for an experimental plan are formulated to highlight such optimal points.
DEVELOPMENT AND TEST OF FREQUENCY SUBSECTION REGULATION SYSTEM FOR COMBINE HARVESTER HEADER CUTTER
Authors: Li Ying , Guan Zhuohuai , Chen Yisong
Published: January 2022

Aiming at the problems that the cutter frequency of combine harvester is difficult to be adjusted adaptively with the forward speed, and that the missed cut or repeated cut may cause the harvesting loss to increase and the operation effect to fluctuate greatly, the system is designed to regulate the cutter frequency of combine harvester by sections. By constructing the cutter trajectory equation, the influence of the relationship between the forward speed of the harvester and the cutting frequency on the cutting area is analyzed, and the optimum cutting frequency range at different operating speeds is determined. The results show that the error between the actual cutting frequency and the desired frequency of the cutter is less than 0.8Hz, and the maximum relative error is less than 8.6%; the average steady-state adjustment time of the system is 1.3s when the input cutting frequency of the device changes abruptly. The research class provides technical support for the improvement of the combine harvester handling system and the increase of the machine automation level.
Apresentação
Authors: Andreis Greice da Silva Lorenzzetti , Padilha Glauciane Klein Burgiert
Published: January 2022

Apresentação da REMAT, v. 7, n. 2, 2021.

Publicação contínua: 01/07/2021 a 31/12/2021.