Three-feature model to reproduce the topology of citation networks and the effects from authors' visibility on their h-index

Various factors are believed to govern the selection of references in citation networks, but a precise, quantitative determination of their importance has remained elusive. In this paper, we show that three factors can account for the referencing pattern of citation networks for two topics, namely "graphenes" and "complex networks", thus allowing one to reproduce the topological features of the networks built with papers being the nodes and the edges established by citations. The most relevant factor was content similarity, while the other two - in-degree (i.e. citation counts) and {age of publication} had varying importance depending on the topic studied. This dependence indicates that additional factors could play a role. Indeed, by intuition one should expect the reputation (or visibility) of authors and/or institutions to affect the referencing pattern, and this is only indirectly considered via the in-degree that should correlate with such reputation. Because information on reputation is not readily available, we simulated its effect on artificial citation networks considering two communities with distinct fitness (visibility) parameters. One community was assumed to have twice the fitness value of the other, which amounts to a double probability for a paper being cited. While the h-index for authors in the community with larger fitness evolved with time with slightly higher values than for the control network (no fitness considered), a drastic effect was noted for the community with smaller fitness

Structure-semantics interplay in complex networks and its effects on the predictability of similarity in texts

There are different ways to define similarity for grouping similar texts into clusters, as the concept of similarity may depend on the purpose of the task. For instance, in topic extraction similar texts mean those within the same semantic field, whereas in author recognition stylistic features should be considered. In this study, we introduce ways to classify texts employing concepts of complex networks, which may be able to capture syntactic, semantic and even pragmatic features. The interplay between the various metrics of the complex networks is analyzed with three applications, namely identification of machine translation (MT) systems, evaluation of quality of machine translated texts and authorship recognition. We shall show that topological features of the networks representing texts can enhance the ability to identify MT systems in particular cases. For evaluating the quality of MT texts, on the other hand, high correlation was obtained with methods capable of capturing the semantics. This was expected because the golden standards used are themselves based on word co-occurrence. Notwithstanding, the Katz similarity, which involves semantic and structure in the comparison of texts, achieved the highest correlation with the NIST measurement, indicating that in some cases the combination of both approaches can improve the ability to quantify quality in MT. In authorship recognition, again the topological features were relevant in some contexts, though for the books and authors analyzed good results were obtained with semantic features as well. Because hybrid approaches encompassing semantic and topological features have not been extensively used, we believe that the methodology proposed here may be useful to enhance text classification considerably, as it combines well-established strategies

O EXAME DE SUFICIÊNCIA CONTÁBIL E A PERCEPÇÃO DOS PROFESSORES DO CURSO DE CIÊNCIAS CONTÁBEIS

A pesquisa tem por objetivo descrever a percepção dos docentes do Curso de Ciências Contábeis de uma Instituição de Ensino Superior privada do Estado de Santa Catarina quanto ao Exame de Suficiência Contábil aplicado pelo Conselho Federal de Contabilidade - CFC, como requisito para que os egressos do referido curso possam desempenhar suas funções. Quanto à abordagem metodológica esse estudo caracteriza-se como descritivo, utilizando a pesquisa bibliográfica, sendo que a abordagem do problema abrange principalmente o método qualitativo. Além da leitura realizada na bibliografia pesquisada, a técnica de coleta de dados para a pesquisa foi a aplicação de um questionário dirigido aos professores responsáveis pelos conteúdos de formação básica e de formação profissional do Curso de Ciências Contábeis, atingindo o total de vinte e dois docentes. O questionário na sua maioria foi de questões fechadas e duas questões abertas. O resultado da pesquisa demonstrou que com a percepção e colaboração dos professores, o Curso de Ciências Contábeis pode oferecer novas metodologias e práticas de ensino aos futuros profissionais, destacando-se entre elas a elaboração das provas com o mesmo grau de dificuldade exigido pelo CFC, inclusão de questões de Exames anteriores em suas atividades e realização de simulados periodicamente

Estudio de la mitofagia en respuesta a un programa de entrenamiento de fuerza en personas mayores = Study of mitophagy in response to a strength training program for older people

365 p.Introducción: El envejecimiento provoca cambios fisiológicos, morfológicos y funcionales en el organismo que resulta en disminución de la capacidad física y pérdidas en las funciones fisiológicas. El entrenamiento de fuerza (EF), a su vez, es una estrategia ampliamente empleada para intentar frenar los efectos degenerativos del envejecimiento, especialmente, sobre la morfología y la capacidad funcional. Sin embargo, la literatura científica no deja claro si un programa de EF es capaz de promover cambios en la capacidad mitofágica de las personas mayores, lo que se convirtió en la principal pregunta de investigación del presente trabajo. Objetivo: Analizar los efectos de un programa de EF sobre las diferentes manifestaciones de la fuerza muscular, los indicadores de aptitud funcional, la composición corporal y las proteínas de señalización de la mitofagia en personas mayores. Metodología: 48voluntarios con edad entre 70 y 77 años fueron divididos en dos grupos, control (GC: sin EF) y fuerza (GF: con EF). Fueron evaluados por medio de pruebas de fuerza máxima (dinámica, isométrica y potencia), capacidad funcional, composición corporal y extracción de sangre para análisis de las proteínas de mitofagia, antes y después de la realización de un programa de EF. El entrenamiento fue compuesto por 8 ejercicios, para los principales grupos musculares, ejecutados con intensidad de 5-8 en la escala OMNI-RES, en 3 series de 8-12 repeticiones. Para la comparación intragrupo fue utilizada la prueba de Wilcoxon y para la comparación intergrupos fue utilizada la prueba de Mann-Whitney. La prueba D de Cohen fue utilizada para verificar el tamaño del efecto. Resultados: Los principales resultados encontrados fueron que los participantes del GF mejoraron la fuerza de los miembros superiores e inferiores, la potencia de los miembros inferiores y la capacidad funcional tras las 8 semanas de entrenamiento. Además, fueron observadas mejoras significativas en las proteínas PGC-1α, BNIP3 y NIX en el GF, en comparación con el GC. Conclusiones: El programa de EF realizado por las personas mayores de 70 años produjo incrementos de la fuerza/potencia muscular y de la capacidad funcional, además de producir cambios positivos en las proteínas de macroautofagia, biogénesis mitocondrial y mitofagia, especialmente, en aquellas relacionadas con la vía NIX/Bnip3 de la mitofagia

Intersections of immigration and sexual and reproductive health : an umbrella literature review with a focus on health equity

Copyright: © 2021 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).Identifying the opportunities and barriers of promoting and fulfilling the sexual health rights of migrants remains a challenge that requires systematic assessment. Such an assessment would include estimating the influence of acculturation processes on sexual and reproductive health, and mapping intersectional inequities that influence migrants’ sexual and reproductive health in comparison with the native population. The aim of this research was to locate, select, and critically assess/summarize scientific evidence regarding the social, cultural, and structural factors influencing migrants’ sexual and reproductive health outcomes in comparison with native population. An umbrella review of systematic reviews and/or meta-analyses, following preferred reporting items for systematic reviews and meta-analysis (PRISMA) standards was undertaken. Medline, Scopus, Web of Science, and the Cochrane Database of Systematic Reviews were searched from their start date until June 2019. The quality of the included articles was determined using the assessment of multiple systematic reviews tool (AMSTAR 2). From the 36 selected studies, only 12 compared migrant with native populations. Overall, the findings indicated that migrants tend to underuse maternal health services and have an increased risk of poor sexual and reproductive health outcomes. Specific intersectional inequities were identified and discussed.info:eu-repo/semantics/publishedVersio

E-business strategies for destination management organisations

Destinations Management Organizations (DMO) are the organizations responsible for management and/or marketing of destinations. With the advent of Internet and the easy way in which anyone can communicate with the consumer, the role of DMO as intermediaries is based on the need to add value. If DMO actively join e-business they can add value to the consumer but also to suppliers. Destination Management Systems (DMS) are a collection of computerized information about a destination, accessible in an interactive way. The concept is defined as a synonym of the technological infrastructure of a DMO. The present study aims to present the conceptual framework of an investigation intended to define the main factors behind the success of DMS. The research model is based on the assumption that success factors fit in three spheres of action: the dynamics of the system implementation within a DMO, the very specific features of DMS and the organizational environment in the destination