bluuebunny/crossref_metadata_2025 huggingface dataset:
Electrostatic Interactions to Attach Latex to Pigment Surface to Reduce Binder Migration
Authors: Rao Pradnya D. , Bousfield Douglas W. , Tripp Carl P.
Published: May 2022

For many paints, paper coatings, and other pigmented coatings, latex and soluble binders are used to impart mechanical properties. However, non-uniform latex binder distributions are often observed in the thickness direction during application and drying, leading to quality issues. While several publications have documented this issue, few solutions are offered in the literature. Here we report a simple process to use electrostatic interactions to attach latex binder to pigments. Coating suspensions are generated using cationic precipitated calcium carbonate (PCC) pigments that are mixed with anionic styrene-butadiene (SB) latex binders resulting in latex-covered pigments. The migration of latex binder in coatings generated on various substrates under various drying conditions was measured using Raman spectroscopy and compared with reference coatings. The new system shows reduced latex binder migration for most situations than those obtained with the reference coating. The coated papers were also measured for strength, opacity, gloss, water drainage rate, and porosity. Little difference is seen in the picking strength of the coating and gloss compared to coatings prepared with standard formulations. Water drainage rate, opacity, and porosity were higher for latex-covered pigment (LCP) coatings than the reference standard coating; this increased porosity is likely due to the strong electrostatic attraction that exists between the cationic pigment and anionic latex binder that reduces the densification of the coating during drying.
Optimize Local Therapy for Oligometastatic and Oligoprogressive Non–Small Cell Lung Cancer to Enhance Survival
Authors: Chang Joe Y. , Verma Vivek
Published: May 2022

Metastatic non–small cell lung cancer (NSCLC) is highly heterogeneous, and there are patients with limited areas of metastases (oligometastases) or progression (oligoprogression) whose natural history and prognosis can be considerably more favorable. As a result, local therapy may offer these patients a chance at clinically meaningful disease control and/or cure. This review begins by describing the current status of the existing prospective data, including evidence of overall survival improvements from multiple randomized trials. Given the nascence of this realm, the review then examines ongoing controversies and unresolved issues regarding local therapy for oligometastatic and oligoprogression. First, the role of local therapy in the setting of targeted therapies and immunotherapy is discussed, because most published randomized trials of local therapy have been performed in the context of chemotherapy, which is no longer the standard of care for most patients with metastatic NSCLC. Refining patient selection for local therapy is then reviewed, including clinical factors (such as control of the primary and regional lymph node sites, the heterogeneous definitions of oligometastases/oligoprogression, and the underrepresentation of brain metastases in existing randomized data) and novel pathologic/molecular biomarkers. Next, because there also remains no consensus regarding the optimal modality of local therapy, the advantages and disadvantages of stereotactic radiotherapy, surgery, and other ablative techniques are discussed. Subsequently, methods to optimize radiotherapy are examined, including controversies regarding the optimal dose/fractionation and timing/sequencing scheme. A discussion regarding potentially extending the existing data to polymetastatic NSCLC follows. The review concludes with remarks regarding prudently designing randomized trials of local therapy going forward, including the benefits and drawbacks of specific endpoints meriting further testing in this unique population.
NCCN Guidelines® Insights: Hematopoietic Growth Factors, Version 1.2022
Authors: Griffiths Elizabeth A. , Roy Vivek , Alwan Laura , Bachiashvili Kimo , Baird John , Cool Rita , Dinner Shira , Geyer Mark , Glaspy John , Gojo Ivana , Hicks Ashley , Kallam Avyakta , Kidwai Wajih Zaheer , Kloth Dwight D. , Kraut Eric H. , Landsburg Daniel , Lyman Gary H. , Mahajan Anjlee , Miller Ryan , Nachar Victoria , Patel Seema , Patel Shiven , Perez Lia E. , Poust Adam , Riaz Fauzia , Rosovsky Rachel , Rugo Hope S. , Simon Shayna , Vasu Sumithira , Wadleigh Martha , Westbrook Kelly , Westervelt Peter , Berardi Ryan A. , Pluchino Lenora
Published: May 2022

The NCCN Guidelines for Hematopoietic Growth Factors provide recommendations for the appropriate use of growth factors in the clinical management of febrile neutropenia (FN), chemotherapy-induced thrombocytopenia (CIT), and chemotherapy-induced anemia (CIA). Management and prevention of these sequelae are an integral part of supportive care for many patients undergoing cancer treatment. The purpose of these guidelines is to operationalize the evaluation, prevention, and treatment of FN, CIT, and CIA in adult patients with nonmyeloid malignancies and to enable the patient and clinician to assess management options for FN, CIT, and CIA in the context of an individual patient’s condition. These NCCN Guidelines Insights provide a summary of the important recent updates to the NCCN Guidelines for Hematopoietic Growth Factors, with particular emphasis on the incorporation of a newly developed section on CIT.
Is intangibility a rewarding strategy?A study on European shareholders returns from 1999 to 2019
Authors: Vasconcelos Tiago de , Forte Denis , Barboza Flávio Luiz de Moraes
Published: May 2022

Resource Based View (RBV) and Dynamic Capability approach states that the use of resources within a company is strategical in creating value. As an innovative methodological contribution, a machine learning technique on behalf a predictive proxy was used for generating the Total Shareholder Return (TSR) trends in the European non-financial companies quarterly base data, from 1999-2019. The panel data analysis results bring new insights. The question is not Tangible or Intangible anymore but the nature of Intangibility that is deterministic for the TSR. Therefore, not only Intangible Assets, but Capital Expenses, Administrative Costs, Advertisement, Research and Development and EBITDA were fundamental to create value to TSR. These results are important for management conclusions, both practical and academic, in order to review the current notion of ‘expenses’ elevating them to a strategical role in value creation in the architectural company’s structure.
Relação entre atividades extracurriculares e mercado de trabalho: uma revisão integrativa da literatura brasileira
Authors: Pires Victor Valadão , Mendes Diego Costa
Published: May 2022

Este trabalho visa analisar como as publicações científicas brasileiras estão discutindo a relação entre as atividades extracurriculares (AE) e a formação profissional do campo de negócios para o mercado de trabalho. Com este objetivo, o estudo realizou uma revisão integrativa da literatura (RI). Para desenvolver esta RI, consideramos como cursos do campo de negócios os cursos de Administração, Ciências Contábeis e Ciências Econômicas. Elaboramos e selecionamos critérios de inclusão e exclusão, dos quais, depois de aplicados nos artigos encontrados após busca primaria, contemplaram onze (11) artigos para compor a amostra que fora analisada. Após a leitura criteriosa dos artigos selecionados, foram selecionados eixos argumentativos que norteiam as discussões desta R.I. esperando que os resultados fomentem a participação em AE, além de facilitar o planejamento profissional do estudante durante seu período de formação. Os achados indicam a importância das atividades AE não somente no desenvolvimento de competências profissionais dos discentes, mas na criação de uma rede de contatos e perfil empreendedor. Por fim, sugerem-se estudos comparativos entre estudantes que participaram e que não participaram de AE. Tais estudos podem fomentar maiores investimentos nestas atividades, como alternativa viável e factível para minimizar o gap entre o que é ofertado pelo ambiente educacional e o que é demandado pelo mercado empresarial.
Análise da satisfação da qualidade do serviço de refrigeração: aplicação da metodologia SERVQUAL
Authors: Gonçalves Junior Geraldo Afonso , Fehr Lara Cristina Francisco de Almeida
Published: May 2022

A presente pesquisa buscou analisar a satisfação dos serviços fornecidos aos clientes de uma empresa de refrigeração situada no município de Juiz de Fora, por meio da Escala SERVQUAL. Esta análise é valiosa, pois a qualidade é um fator importante para as empresas na função de atrair e reter clientes. Ela foi elaborada por meio de survey single entity, com abordagem qualitativa, utilizando de um questionário proposto por Parasuraman et al. (1985) como fonte de coleta de dados. O questionário teve sua fidelidade atestada por meio do Alfa de Cronbach, o qual apresentou valor de 0,819. Após a aplicação do questionário, comparou-se o desempenho apresentado, na percepção dos clientes, com a expectativa dos mesmos, extraindo os gaps na execução do serviço, o qual foi identificado em todas as dimensões da Escala SERVQUAL, sendo a maior discrepância na dimensão Tangibilidade, motivado principalmente pela aparência das instalações físicas e modernidades dos equipamentos. Nota-se, então, que as expectativas dos clientes não estão sendo alcançadas pelo desempenho do serviço prestado, revelando a necessidade de as empresas identificarem os pontos de insuficiência e implementar soluções para reverter está situação. Ainda, realça a importância de verificar se os clientes estão satisfeitos ou não para se tornarem mais competitivas.
A percepção e gestão de riscos durante a pandemia da covid-19 em empresas automotivas
Authors: Nóbrega João Victor Sales da , Santos Cassia Pereira dos , Carmona Charles Ulises de Montreuil , Cabral Neto João Pinto , Santos Filho Josia de Sousa
Published: May 2022

A presente pesquisa buscou analisar as práticas de gestão de riscos adotadas por empresas brasileiras pertencentes ao setor automotivo, que correspondem a um importante setor da economia nacional, e foi um dos mais afetados pela crise provocada pela pandemia da COVID-19, iniciada em 2020. Para isto, fez-se uso da metodologia de estudo de multicascos, por meio de entrevistas semiestruturadas abertas com membros diretamente ligados à gestão de riscos das organizações cases, tendo em vista a visualização da estratégia tomada com foco no equilíbrio da segurança dos colaboradores e sustentabilidade do negócio. O período considerado no estudo foi de janeiro a dezembro de 2020. Como resultado, foi observado que as empresas pertencentes a um mesmo grupo econômico seguiram com uma estratégia de estabelecimento da governança, por meio da criação de um comitê de crise; seguido de definição das ações mitigadoras, a partir da identificação e classificação dos riscos potenciais; e por fim, alinhamento para o pós-pandemia, através da realização de ajustes organizacionais com base nesta nova realidade. Assim, as empresas estudadas mostraram rapidez e coerência em suas iniciativas, minimizando os danos impostos pelo cenário da crise, garantindo a saúde dos seus colaboradores e instaurando uma cultura de conscientização quanto à prevenção ao novo Corona vírus. Ações estas que se mostraram fundamentais para preservar a sustentabilidade do negócio.
Gestão de processos no serviço público: uma análise bibliométrica
Authors: Orviedo Schirley Kammers , Juliatto Dante Luiz
Published: May 2022

Embora a gestão de processos tenha sido aceita por grande parte das organizações privadas, no serviço público é um assunto recente e interessante a ser explorado. O objetivo deste estudo buscou evidenciar sobre o desenvolvimento das iniciativas de gestão de processos no serviço público. A metodologia utilizada é de pesquisa bibliométrica, de abordagem quantitativa, método exploratório e dedutivo, com análise de dados secundários, cuja técnica e instrumento de coleta de dados envolveu a pesquisa bibliográfica dos artigos publicados nas bases de dados Scopus, Web of Science e Scielo, através do Portal CAPES. A pesquisa partiu dos seguintes eixos temáticos ‘Gestão de Processos’ e ‘Serviço Público’ com suas variações nas línguas inglês, português e espanhol. Os resultados da pesquisa puderam identificar 48 artigos, os quais foram organizados por meio de planilhas do software Microsoft Excel, para posterior análise detalhada de 4 mensurações: ano de publicação, reconhecimento dos periódicos, autores com maior produtividade ligado ao país de maior destaque, e palavras-chave. Verificou-se que o tema vem se popularizando no serviço público e com maior ocorrência de publicações a partir de 2015, sendo à Alemanha o país de destaque nas publicações por pesquisadores. Como limitações, não foram selecionados os artigos em outras línguas, exceto inglês, português e espanhol, também não fazem parte deste levantamento: teses, dissertações, livros, capítulos de livros e 16 artigos que não estavam disponíveis integralmente online (8 de cada base de dados - Scopus e Web of Science). Para pesquisas futuras, foi sugerida uma análise mais aprofundada somente das instituições públicas brasileiras.
Contextos e processos da gestão social com suporte em revisão sistemática da literatura
Authors: Afonso Damarys de Souza , Caland Tairo da Costa Sobral , Barbosa Flávia Lorenne Sampaio , Bizarria Fabiana Pinto de Almeida
Published: May 2022

O presente artigo apresenta uma revisão sistemática de artigos nacionais de 2016 a setembro de 2020, escritos em português, indexados nas bases de dados Scientific Periodicals Electronic Library (SPELL), que trazem pesquisas empíricas na área da Gestão Social. São apresentados alguns estudos teóricos que destacam abordagens conceituais importantes em Gestão Social a fim de situar esse campo de estudo. A partir das discussões teóricas em Gestão Social emergem as seguintes questões: quais contextos e processos vêm sendo a ela associados em seu percurso histórico de construção a partir das pesquisas empíricas na área? Esta pesquisa objetiva apresentar as várias possibilidades de se pensar a Gestão Social e como ela vem sendo construída a partir dos estudos na área.
Previsão do ICMS nos estados da região Sudeste: utilização do modelo sazonal simples e Holt-Winter
Authors: Gonçalves Júnior Geraldo Afonso , Fehr Lara Cristina Francisco de Almeida , Rodrigues Raquel da Silva
Published: May 2022

Como forma de aperfeiçoar as mazelas oriundas do Modelo de Gestão Burocrático, o Modelo Gerencial de Administração Pública incorporou à máquina estatal o Princípio da Eficiência e, com isso, práticas da iniciativa privada começaram a ser utilizadas pela administração pública. Uma dessas práticas foi o planejamento, que é apontado como ponto de partida para se obter eficiência (SILVA et al., 2013) e no qual, consiste em antecipar o futuro para se tomar as melhores decisões no presente. Na administração Pública, o planejamento e a previsão de receitas ganham importância, pois é a partir desta que são fixadas as despesas no setor público. Sendo assim, esse artigo teve como objetivo identificar, com base nos modelos de Séries Temporais, qual é o melhor para a previsão da a receita tributária do ICMS para os Estados da Região Sudeste (MG, SP, RJ e ES). Utilizou-se o lapso temporal correspondente ao período de 2010 a 2017 para as projeções, e o software IBM SPSS, versão para estudantes para sua análise. Foram apontados os modelos   Aditivo de Holt-Winters para os Estados de MG, SP e RJ e o Modelo Sazonal Simples para o Estado do Espírito Santo. Desta maneira, identificou-se que as Séries Temporais podem apresentar um recurso para auxiliar a Administração Publica na previsão das receitas de ICMS para os Estados da Região Sudeste.
El estudio de la práctica reflexiva y la labor tutorial en el proceso de formación docente
Authors: Lizana-Verdugo Alexis , Burgos-García Antonio
Published: May 2022

The accompaniment and tutoring of future teachers, together with the promotion and development of reflective skills, constitute essential elements to professionalize and improve the processes experienced in the academic training of a teacher in training. The aim of this article is to construct and validate a questionnaire aimed at discovering the perceptions of initial teacher training students regarding tutorial work and their orientation towards reflective practice. The procedure used allows knowing the psychometric properties of the instrument, through content validity tests (expert judgment and content validity index), construct validity (KMO, Bartlett's Sphericity Test, AFE and AFC) and reliability tests (Cronbach's Alpha, Two halves, Item-test correlation and Mann-Whitney U test). The sample is constituted by 60 students of Basic Education of the Catholic University of Maule, Chile. The results show that the theoretical dimensions established a priori (Personal Reflexivity, Reflective Practice and Reflection on Training), are statistically confirmed, but with a redistribution of some items. Finally, a valid and reliable instrument called "Questionnaire on the Tutorial Action oriented to Reflection in the Practicum" is obtained, which stands as a useful tool for the improvement of the processes experienced in the practicum propitiated by the role of the university tutor.

El acompañamiento y tutorización de los futuros docentes, junto a la promoción y el desarrollo de habilidades reflexivas, constituyen elementos esenciales para profesionalizar y mejorar los procesos vividos en la formación académica de un docente en formación. Este artículo tiene como objetivo construir y validar un cuestionario destinado a conocer las percepciones de los estudiantes de formación inicial docente respecto a la labor tutorial y su orientación a una práctica reflexiva. El procedimiento empleado permite conocer las propiedades psicométricas del instrumento, mediante pruebas de validez de contenido (Juicio de expertos e índice de validez de contenido), validez de constructo (KMO, Prueba de esfericidad de Bartlett, AFE y AFC) y pruebas de fiabilidad (Alpha de Cronbach, Dos mitades, Correlación ítem-test y prueba U de Mann-Whitney). La muestra está constituida por 60 estudiantes de Educación Básica de la Universidad Católica del Maule, Chile. Los resultados muestran que las dimensiones teóricas establecidas a priori (Reflexividad Personal, Práctica Reflexiva y Reflexión sobre su Formación), son confirmadas estadísticamente, y de forma significativa con la obtención de una redistribución de los ítems. Finalmente, se obtiene un instrumento válido y fiable denominado “Cuestionario sobre la Acción Tutorial orientada a la Reflexión en el Prácticum” que se alza como una herramienta útil para la mejora de los procesos vividos en el prácticum propiciados por el rol del tutor académico universitario.
From the book to television and to the whole world. Maya the Bee in Basque
Authors: Zubillaga Gomez Naroa
Published: May 2022

The aim of this article is to show how the Maya the Bee franchise entered the Basque cultural system and, more specifically, how the audiovisual translation (AVT) into Basque was conducted. Maya the Bee is a character from a book written by the German author Waldemar Bonsels in 1912. Yet, her origins are not that well known, as she made her entrance into the public consciousness more recently through audiovisual media. The first two sections of the article delve both into the origins and the multimedia character of Maya the Bee. The third section of the article focuses on the introduction of the Maya franchise into the Basque cultural system, the fourth section explains the methodology used and the fifth section presents the results of an analysis of the AVT. The analysis focuses on the dubbing of the 3D series (English into Basque) and looks at whether both nature-related terms are simplified and offensive language and wordplay have been retained.
A note on the Aiello–Subbarao conjecture on addition chains
Authors:   Ain Shams University, Bahig Hatem M.
Published: May 2022

Given a positive integer $x$, an addition chain for $x$ is an increasing sequence of positive integers $1=c_0,c_1, \ldots , c_n=x$ such that for each $1\leq k\leq n,$ $c_k=c_i+c_j$ for some $0\leq i\leq j\leq k-1$. In 1937, Scholz conjectured that for each positive integer $x$, $\ell(2^x-1) \leq \ell(x)+ x-1,$ where $\ell(x)$ denotes the minimal length of an addition chain for $x.$ In 1993, Aiello and Subbarao stated the apparently stronger conjecture that there is an addition chain for $2^x-1$ with length equals to $\ell(x)+x-1 .$ We note that the Aiello–Subbarao conjecture is not stronger than the Scholz (also called the Scholz–Brauer) conjecture.
The Art of Abduction
Authors: Douven Igor
Published: May 2022

A novel defense of abduction, one of the main forms of nondeductive reasoning.

With this book, Igor Douven offers the first comprehensive defense of abduction, a form of nondeductive reasoning. Abductive reasoning, which is guided by explanatory considerations, has been under normative pressure since the advent of Bayesian approaches to rationality. Douven argues that, although it deviates from Bayesian tenets, abduction is nonetheless rational. Drawing on scientific results, in particular those from reasoning research, and using computer simulations, Douven addresses the main critiques of abduction. He shows that versions of abduction can perform better than the currently popular Bayesian approaches—and can even do the sort of heavy lifting that philosophers have hoped it would do.

Douven examines abduction in detail, comparing it to other modes of inference, explaining its historical roots, discussing various definitions of abduction given in the philosophical literature, and addressing the problem of underdetermination. He looks at reasoning research that investigates how judgments of explanation quality affect people's beliefs and especially their changes of belief. He considers the two main objections to abduction, the dynamic Dutch book argument, and the inaccuracy-minimization argument, and then gives abduction a positive grounding, using agent-based models to show the superiority of abduction in some contexts. Finally, he puts abduction to work in a well-known underdetermination argument, the argument for skepticism regarding the external world.
Radiocarbon and genomic evidence for the survival of Equus Sussemionus until the late Holocene
Authors: Cai Dawei , Zhu Siqi , Gong Mian , Zhang Naifan , Wen Jia , Liang Qiyao , Sun Weilu , Shao Xinyue , Guo Yaqi , Cai Yudong , Zheng Zhuqing , Zhang Wei , Hu Songmei , Wang Xiaoyang , Tian He , Li Youqian , Liu Wei , Yang Miaomiao , Yang Jian , Wu Duo , Orlando Ludovic , Jiang Yu
Published: May 2022

The exceptionally rich fossil record available for the equid family has provided textbook examples of macroevolutionary changes. Horses, asses, and zebras represent three extant subgenera of Equus lineage, while the Sussemionus subgenus is another remarkable Equus lineage ranging from North America to Ethiopia in the Pleistocene. We sequenced 26 archaeological specimens from Northern China in the Holocene that could be assigned morphologically and genetically to Equus ovodovi, a species representative of Sussemionus. We present the first high-quality complete genome of the Sussemionus lineage, which was sequenced to 13.4× depth of coverage. Radiocarbon dating demonstrates that this lineage survived until ~3500 years ago, despite continued demographic collapse during the Last Glacial Maximum and the great human expansion in East Asia. We also confirmed the Equus phylogenetic tree and found that Sussemionus diverged from the ancestor of non-caballine equids ~2.3–2.7 million years ago and possibly remained affected by secondary gene flow post-divergence. We found that the small genetic diversity, rather than enhanced inbreeding, limited the species’ chances of survival. Our work adds to the growing literature illustrating how ancient DNA can inform on extinction dynamics and the long-term resilience of species surviving in cryptic population pockets.
Educación familiar mapuche: epistemes para el diálogo con la educación escolar
Authors:   Universidad Católica de Temuco, Quilaqueo Rapimán Daniel , Torres Cuevas Héctor ,   Universidad del Bío-Bío, Álvarez Santullano Pilar ,   Universidad de Los Lagos
Published: May 2022

Este artículo analiza epistemes de la educación familiar mapuche que fueron obtenidas con padres de familia en comunidades de la región de La Araucanía, en Chile, desde una perspectiva de diálogo de saberes con la educación escolar. Se considera la producción de conocimiento mapuche como crítica epistemológica a la monoculturalidad occidental del currículum escolar. La metodología utilizada es la investigación cualitativa y se apoya en la Teoría Fundamentada. Los resultados dan cuenta de una formación a nivel intrafamiliar e intracomunidad y de procesos que implican una doble inmersión en la sociedad chilena. Se concluye que la formación se organiza considerando métodos construidos con la lógica del conocimiento educativo mapuche como aporte para un diálogo con el saber hegemónico occidental.
Brechas y desafíos organizacionales en la implementación temprana de la Nueva Educación Pública en Chile
Authors:   Universidad Adolfo Ibáñez (Chile), Garretón Matías , Sanfuentes Matias ,   Universidad de Chile, Valenzuela Juan Pablo ,   Universidad de Chile, Nuñez Isabel Margarita ,   Universidad de Chile
Published: May 2022

La ley de Nueva Educación Pública (NEP) ha determinado una reforma profunda del sistema escolar público en Chile, transfiriendo las escuelas administradas por municipios a servicios estatales dependientes del Ministerio de Educación. Esto implica un proceso de recentralización e incremento de la escala administrativa inédito en el mundo. En este artículo analizamos cualitativamente su implementación en un servicio local de educación pública que integra tres municipios del Gran Santiago. Identificamos severas falencias de diseño institucional que generan sufrimiento laboral, compensado por un sentido heroico con el que los funcionarios aspiran a mejorar el futuro de los niños y de la educación pública. Esta situación no es sostenible en el tiempo y es necesario mejorar las condiciones de trabajo para garantizar la calidad de la educación en este servicio. En este sentido, destacamos la necesidad de mejoras urgentes para el funcionamiento administrativo de la NEP en términos de gestión financiera, capacidades humanas y aprendizaje institucional.
Violencia escolar, infancia y pobreza: perspectivas de estudiantes de educación primaria
Authors: Morales Macarena , Ortiz-Mallegas Sebastián , López Verónica ,   Pontificia Universidad Católica de Valparaíso
Published: May 2022

La violencia escolar debe comprenderse en su relación con las personas, organizaciones y culturas que la enmarcan. Resulta interesante conocer la perspectiva de los niños y niñas de enseñanza primaria al respecto, especialmente en los segmentos sociales marginados y vulnerados por condiciones de injusticia y pobreza, cuyas voces suelen estar menos representadas en la cultura escolar. Considerando estos antecedentes, realizamos una indagación cualitativa en una escuela básica, en la que el 100% de los estudiantes acreditaban condiciones de vulnerabilidad social y educativa. Asimismo, en el centro escolar solían ocurrir hechos de violencia. El objetivo fue conocer los significados construidos respecto de la violencia y su gestión en la escuela. Los resultados refieren a una experiencia cotidiana de aburrimiento en el aula, ante la cual algunos estudiantes se conformaban, en tanto que otros buscaban fugarse de clases o interrumpirlas a través de peleas o destrucción de mobiliario. Quienes protagonizaban estas acciones eran atendidos por profesores y profesionales de apoyo, a diferencia de aquellos que observaban o recibían agresiones. Los participantes manifiestan propuestas para mejorar la convivencia en la escuela y el aula. Estos resultados son discutidos en relación con las necesidades de reconocimiento identitario y cultural de los estudiantes.
El reconocimiento como profesor de inglés: una exploración de las experiencias de estudiantes en práctica intermedia
Authors:   Universidad Bernardo O’Higgins, Moraru Mirona
Published: May 2022

El artículo examina la experiencia de los estudiantes de Pedagogía en inglés de una universidad chilena durante su práctica intermedia (preprofesional). El objetivo principal es explorar, desde la perspectiva de los estudiantes, los factores que inciden en su reconocimiento como profesores durante dicha práctica, a pesar de su posición estructural marginal como practicantes en los establecimientos educativos. El estudio está basado en cinco entrevistas semiestructuradas, analizadas siguiendo el aparato conceptual desarrollado por el sociólogo francés Pierre Bourdieu. Se propone que el factor principal que determina cómo los practicantes adquieren capital, autoridad y reconocimiento como profesores en el aula es la negociación de la relación de poder asimétrica que se establece entre los practicantes y el profesor guía (es decir, el profesor del aula).
Articulación entre educación ambiental y educación científica: una mirada desde las competencias en sostenibilidad desarrolladas en la formación inicial docente
Authors:   Universidad de Chile, Karelovic Vargas Felipe , Kong Lopez Felipe ,   Universidad Diego Portales (Chile)
Published: May 2022

Este artículo aborda la asociación entre las controversias socio-científicas, así como las competencias clave para la sostenibilidad desde la educación en ciencias (EC) y la educación ambiental (EA), específicamente en la formación inicial docente (FID). Se propone que desde la articulación entre la EC y la EA también se obtienen nuevas oportunidades de investigación, siendo relevantes aquellas sobre los factores que afectan al desarrollo de las competencias claves de Wiek y sus colegas (2011). Para verificar lo propuesto se utilizaron metodologías cuantitativas que indagan en las concepciones de las controversias socio-científicas y en el grado relativo de despliegue de las competencias clave para la sostenibilidad. Para ello, se aplicó el cuestionario BIOHEAD-citizen y un test de caso de estudios evaluado con rúbricas a profesores y profesoras en formación respectivamente, con el fin de recopilar evidencia de las concepciones de controversias de temas variados y el grado relativo de desarrollo de las competencias en pensamiento sistémico, de estrategia y normativa. La asociación de ambos datos se realizó con modelos lineales, a partir del puntaje por competencia como variable dependiente. El mejor modelo obtenido presenta una explicación estadísticamente significativa del pensamiento sistémico por parte de dos sistemas de concepciones: socio-ambientalmente negativo y sociopolítico religioso; en cambio, para las otras dos competencias (estrategia y normativa) ninguna variable independiente resultaba en un modelo relevante. Estos resultados sugieren que las concepciones sí son importantes para el desarrollo de competencias clave, respaldando la importancia de una articulación entre la EC y la EA, cuyos alcances para la formación inicial docente son discutidos en el artículo.
Concepciones subyacentes a las racionalidades evaluativas de docentes escolares
Authors:   Universidad de Santiago de Chile, Ríos Muñoz Daniel , Herrera Araya David ,   Departamento de Educación. Universidad de Santiago de Chile
Published: May 2022

En este artículo se analizan las concepciones subyacentes a las racionalidades evaluativas de docentes que desarrollan su ejercicio profesional en instituciones escolares. La investigación es de carácter cualitativo-interpretativo. Participaron 15 docentes con diferentes años de experiencia laboral y que realizan docencia en diversos niveles y disciplinas del currículum escolar. Para la recopilación de información, se realizó una entrevista grupal y un grupo focal. Los datos fueron sistematizados mediante un análisis de contenido con el programa NVivo, versión 12. Los principales resultados relevan la preeminencia de las racionalidades evaluativas tecnológica y de práctica cultural en los docentes participantes. A partir de estos hallazgos, se discute la necesidad de reflexionar sobre los componentes implícitos que subyacen a las racionalidades evaluativas y cómo estas deben ser develadas y asumidas para enfrentar las nuevas demandas de la práctica evaluativa en los diferentes contextos escolares.
Approach for Safe Transfusion Practices during COVID-19 Pandemic: Observation of an Indian Rural Blood Bank
Authors: Nikhil . , Das Subhashish , Hemalatha A , Kalyani R
Published: May 2022

Introduction: Focus of Blood transfusion services is continuous, judicious and well-timed supply of safe Blood. The Severe Acute Respiratory Syndrome-Coronavirus 2 (SARS-CoV-2) pandemic has caused the major disruption throughout the world and declaration of nationwide lockdown by Government of India from 25th March 2020 to 31st May 2020 to halt the spread of virus has afflicted the blood bank services enormously. Aim: To keep the focal point on approaches implemented for safe blood transfusion services during Coronavirus Disease2019 (COVID-19) pandemic in rural blood bank and to observe how COVID-19 pandemic has affected blood transfusion services in year 2020 with regards to blood collection, supply and organization of camps as compared to year 2019. Materials and Methods: A retrospective study was done in the Blood Bank in a rural tertiary care hospital in Southern India, from January 2019 to December 2020. Various measures were implemented to increase the donor safety and prevention of spread to community and to increase the number of voluntary donors. Statistical analysis performed using Statistical Package for Social Sciences (SPSS) software version 21.0. All data was entered and tabulated in excel sheet. A two sided t-test was utilized for comparing dual variables and one sided Analysis of Variance (ANOVA) for multiple variables. The p-value <0.05 was considered significant. Results: Mean number of units received during pre-COVID19 year were significantly higher (4468±4127.2) as compared to COVID-19 year 2020 (2282±1856.4) with significant p-value <0.001. Overall utilisation of Packed Red Blood Cell (PRBC) (0.001), Human Platelets (Single Donor Platelets (SDP)/Random Donor platelets (RDP)) p-value 0.003,Fresh Frozen Plasma) FFP (p-value 0.001) was significantly higher in pre-COVID-19 year as compared to COVID-19 year 2020. Total number of camps conducted in pre-COVID-19 year was 41 as compared to 23 in COVID-19 year 2020. Patients deferred for blood donation were much higher in COVID-19 year 2020 (n=400) with maximum (32.5%) under category of self-deferral due to clinical illness as compared to year 2019 (n=200). Conclusion: As a result of our strict and effective implementation of COVID-19 safety protocols , no donor had complained of post donation COVID related symptoms and none of our blood bank staff had developed any COVID-19 related illness. Hence during the COVID-19 pandemic, our blood bank maintained 100% attendance (with staggered duty hours).
Magnetic Resonance Imaging findings in Primary Extracutaneous Melanoma from a Tertiary Cancer Care Centre: A Retrospective Cohort Study
Authors: Gopalakrishnan Renuka , Raj Jubie , Anandarajan Rakesh , Venugopal M , Appanraj Priya , Radhakrishnan Neelima , Beena Deepthi
Published: May 2022

Introduction: Extracutaneous melanomas are rare, aggressive type of tumour, clinically and biologically distinct from their cutaneous counterpart. The two large broad categories of the extracutaneous melanomas are ocular and mucosal subtypes. Melanomas are classically hyperintense on T1 weighted images and hypointense on T2 weighted images due to the paramagnetic effects of melanin and presence of paramagnetic elements. Aim: To describe the Magnetic Resonance Imaging (MRI) findings in primary extracutaneous melanomas at various anatomic sites. Materials and Methods: This was a retrospective study in which 13 cases of primary extracutaneous melanomas were identified from Picture Archiving and Communication System (PACS) archive over a period of eight years (January 2013 - December 2020). Location and morphology of the tumour, signal intensity characteristics in T1 weighted, T2 weighted (hyperintense/ isointense/hypointense to adjacent muscle) and Diffusion Weighted Imaging (DWI) (presence or absence of diffusion restriction) were analysed. Results: The ocular melanomas (n=2) were seen as well-defined small intraocular mass attached to the choroid. The mucosal melanomas of the nasal cavity (n=2), rectum (n=4), vagina (n=3) and cervix (n=2) presented as large intraluminal polypoidal masses. Three categories of MRI appearances emerged in this study. Majority of the cases (n=8) showed hyperintense signals in T1- weighted images and hypointense signals in T2 weighted images (category 1). Diffusion restriction was seen in all cases (n=13) with low Apparent Diffusion Coefficient (ADC) values which ranged from 439-966 mm/sec with an average value of 755 mm/ sec. Conclusion: T1 and T2 shortening are typical of melanoma, the absence of these does not exclude the diagnosis. Although diffusion restriction and low ADC values help in the diagnosis of these tumours, they do not tend to play a specific role in the diagnosis.
In vitro Inhibition of Dipeptidyl Peptidase-4 (DPP-4) and Arginase by a Dietary Supplement and Its Potential for Improving Quality of Life Factors in Adults
Authors: West Brett J. , Swartz Fernando
Published: May 2022

Aim: Somatopause is the progressive and age-related decline of growth hormone (GH) production due to changes in hypothalamic-pituitary axis signaling and results in typical physiological changes associated with the aging process. The purpose of our study was to investigate the anti-aging potential of several botanical ingredients, including noni fruit juice, as well as a dietary supplement formulation.

Methodology: Dipeptidyl peptidase-4 (DPP-4) influences hypothalamic-pituitary axis signaling and reduces GH production and secretion. Since DPP-4 concentrations increase with age, we evaluated the ability of several botanical ingredients to inhibit DPP-4 activity in vitro. We subsequently formulated an anti-aging dietary supplement with this blend of botanical ingredients by adding amino acids (L-arginine, L-Lysine, citrulline and beta-alanine), gamma-aminobutyric acid (GABA), flax seed oil and several nutrients. The supplement was evaluated for anti-arginase activity in vitro, as the expression of this enzyme also increases with age. The dietary supplement was also consumed by three men and one woman, ages 56 to 62, with relevant but disparate medical histories. Following short-term ingestion of the supplement, these volunteers were interviewed to ascertain any changes in health status.

Results: We discovered that a blend of the botanical ingredients synergistically inhibited DPP-4 in vitro by up to approximately 99%. A concentration-dependent reduction in arginase activity was also observed for the anti-aging dietary supplement. Further, all volunteers reported positive improvements in at least one quality of life factor, which included more restful sleep, reduced musculoskeletal discomfort, increased energy, improved physical stamina and better skin quality.

Conclusion: These initial findings suggest that the anti-aging dietary supplement can mitigate declines in quality of life associated with aging by reducing DPP-4 and arginase activities, thereby supporting healthy GH production and endothelial nitric oxide production.
The Using of GIS to Delineate the Liquefaction Susceptibility Zones at Yogyakarta International Airport
Authors: Hartono Nicholas , Fathani Teuku Faisal
Published: May 2022

Spatial analysis is performed to delineate liquefaction susceptibility zones at Yogyakarta International Airport(YIA). The low to medium cohesionless soil consistency is predominantly observed on the upper subsoil. A shallow groundwater level and low fines content have also enlarged the likelihood of earthquake-induced liquefaction. An SPT based liquefaction triggering procedure is adopted in this study to indicate the Factor of Safety (FoS) whereas the Liquefaction Severity Index (LSI) is used to measure the severity of liquefaction by presuming its manifestation. Inverse Distance Weighted (IDW) interpolation in QGIS is chosen to produce a map with 50 m × 50 m grid size. The analysis results show the YIA’s area is prone to undergo liquefaction at various depths. However, thin liquefied layers may not generate sufficient artesian flow pressure to eject water or sand. The LSI analysis concludes that YIA area is categorized as a non-liquefied to moderate severity where the West side is the governing area
Development of Order Quantity Optimization Model for Growing Item Considering the Imperfect Quality and Incremental Discount in Three Echelon Supply Chain
Authors: Sitanggang Indah Valentinova , Rosyidi Cucuk Nur , Aisyati Azizah
Published: May 2022

This research develops an optimization model for determining the order quantity for growing items by considering the imperfect quality and incremental discount by involving three supply chain members: farmers, processors, and retailers. The farmers are responsible for caring for the newborn items until they reach their ready-to-eat weight. The processors perform two roles, namely processing and screening. In the processing role, the processors process the grown items by a slaughtering and packaging process. Afterward, they inspected the processed items and categorized the items into good and poor quality. Finally, they shipped the end products to retailers. The retailers are responsible for selling good-quality items to the final consumers.  This research considers two kinds of poor quality. First is the poor quality of growing items in terms of mortality rate. The second is the poor quality of final products on the processor side. The processed items with poor quality are then sold to the secondary market at lower prices in one batch at the end of the period. This model also considers the incremental discounts offered by vendors to farmers and retailers to consumers for specific amounts of purchases. The model's objective function is to maximize the total supply chain profit, with the number of orders quantity, cycle time, and the number of batches delivery set as the decision variables. The sensitivity analysis results show that the most sensitive parameter in the model is the probability that the live items survive throughout the growth period.
Effect of Natural Buffer on Biohydrogen Production
Authors: Choiron Miftahul , Tojo Seishu , Chosa Tadashi
Published: May 2022

Hydrogen is the promising ideal energy carrier with no emission but water on its combustible in the next generation. Hydrogen production using biological methods is greener than other methods using fossil fuel. One of the major factors affecting the operation of biohydrogen production is pH level in bioreactors. Restrain of declining pH is expected to increase hydrogen production. Pretreatment is one key factor in successful biohydrogen fermentation using mixed microbes. This study aims to investigate the natural buffer effect on biohydrogen using hot compressed water pretreatment. This batch fermentation experiment was operated in a 110 mL glass reactor with 3.75 g/L glucose as substrate. Mixed culture was obtained from cow dung compost treated with hot compressed water pretreatment at 150 ºC, 0.5 MPa for 40 minutes. Fine dried eggshell powder and calcinated eggshell were added with 1 g/L, 3 g/L, and 5 g/L concentrations as buffer agents. The result showed that the addition of 1 g/L eggshell obtained the highest hydrogen production rate of 0.92 mol H2/mol glucose. Butyric acid and acetic acid are recognized as an indicator of hydrogen production and the Butyric/Acetic molar ratio over 2.6 as efficient biohydrogen fermentation. The highest B/A ratio in this experiment was 4.62 on 3g/L addition of eggshell powder.
Analytical Network Process for Selecting Raw Material Suppliers of UNP100: A Case Study
Authors: Ririh Kirana Rukmayuninda , Ningtyas Desinta Rahayu , Taufiq Rahman Fikri
Published: May 2022

A UNP-100 is a canal iron that connects the storage area (bin) to the frame of a truck. Therefore, the selection of UNP-100 suppliers is an essential process. Suppliers are chosen to provide high-quality materials, in-time deliveries, affordable prices, and excellent services, the applied analytical network process (ANP) in this study. The quantitative method is conducted through questionnaires, and the qualitative method is by interviews. After distributing the questionnaires, calculations are carried out to assess suppliers by constructing an ANP supermatrix. The respondents are the purchasing managers, the quality managers, and the PPIC managers. The criteria to choose suitable suppliers are packaging (0.060), price (0.212), customer care (0.712), delivery (0.103), and quality (0.351). The prioritized UNP-100 suppliers are PT. KPPE (0.346), PT. KPS (0.344), and PT. SME (0.31).
Optimization Model for Agricultural Processed Products Supply Chain Problem in Bandung During Covid-19 Period
Authors: Zahrani Irmansyah Athaya , Chaerani Diah , Rusyaman Endang
Published: May 2022

Coronavirus disease, commonly called Covid-19, is a virus that causes a pandemic in almost every country globally. One of those countries is Indonesia, which has many big cities with dense populations. This study was conducted in Bandung, the capital of West Java, Indonesia. As a result of the Covid-19 pandemic, Bandung was seriously affected in various ways. One was the disruption in the distribution of the agricultural processed products supply chain, which changes producers and consumers' behaviour. Furthermore, as an effort by the government to break the spread of the virus, health protocols limit the distribution. The purpose of this study is to design an optimization model for the supply chain problem of agricultural processed products in Bandung during the Covid-19 period with the objective function is maximizing product suppliers so that all demands on consumers are fulfilled. The use of Local Food Hub (LFH) is a help in this research as a distribution centre point between the producer zone and the consumer zone. Finally, numerical experiments were carried out in two scenarios, namely Large-scale Social Distancing (LSD) and Partial Social Distancing (PSD). It was found that the optimal distribution solution was obtained if the PSD scenario was applied.
Reducing Shrinkage and Stockouts in a Food Retail Store
Authors: Marques Pedro Alexandre , De Carvalho André Mendes
Published: May 2022

Lean thinking is transforming the traditional way of a retail business operates to new and more effective practices. In particular, the food retail business is facing previously unseen challenges which require daily operational excellence to meet them with success. Low productivity, high variability in task completion, lack of work planning should be faced with daily relentless improvement actions. Kaizen, the continuous improvement pillar of Lean, needs to be seen not only as a methodology but also as a philosophy, a vision that needs to be written on everyday actions and personified by each individual. This paper describes an improvement event in the fresh food markets, specifically in the cold meat section, meant to decrease the shrinkage rate as well as the number of out-of-stock (OOS) situations. The methodology adopted followed the seven-step problem-solving procedure provided by the A3 thinking tool.