bluuebunny/crossref_metadata_2025 huggingface dataset:
Two-stage approach to real-time assignment of Web Studio customer support tasks
Authors:   Novosibirsk State Technical University, Prospekt K. Marksa 20, Novosibirsk, 630073, Russia, Begenova Samal , Avdeenko Tatiana ,   Novosibirsk State Technical University, Prospekt K. Marksa 20, Novosibirsk, 630073, Russia
Published: September 2017

Many Web-site owners turn to Web Studios for help in solving the problems of their web projects’ support, mostly on a subscriber basis. If the Web Studio is professionally engaged in technical support of web projects, then it can have dozens and hundreds of clients, who create hundreds of job requests per month. However, Web Studio’s human resources are usually limited. Therefore, the resource allocation problem is of great current interest (by resources we mean the programmers involved in the implementation of this type of work). In this article, we propose two - stage approach for determining an optimal schedule of Web Studio’s customer support tasks. The algorithm of dynamic assignment of tasks in real time is implemented taking into account the dynamic character of this process. The performance of the proposed approach is investigated.
Model for constructing an option’s portfolio with a certain payoff function
Authors:   Tomsk Polytechnic University, 30, Lenin ave., 634050, Russia, Tomsk, Fatyanova Margarita E. , Semenov Mikhail E. ,   Tomsk Polytechnic University, 30, Lenin ave., 634050, Russia, Tomsk
Published: September 2017

The portfolio optimization problem is a basic problem of financial analysis. In the study, an optimization model for constructing an option’s portfolio with a certain payoff function has been proposed. The model is formulated as an integer linear programming problem and includes an objective payoff function and a system of constraints. In order to demonstrate the performance of the proposed model, we have constructed the portfolio on the European call and put options of Taiwan Futures Exchange. The optimum solution was obtained using the MATLAB software. Our approach is quite general and has the potential to design option’s portfolios on financial markets.
Mathematical modeling of incentive mechanisms in projects for the development of new production
Authors:   Samara National Research University, 34 Moskovskoe Shosse, 443086, Samara, Russia, Pavlov Oleg V.
Published: September 2017

The incentive problem of executors of the new products development project at the industrial enterprise is considered in this article. Mastering of a new product leads to the learning effect, which implies reduction of time spent on performing repetitive tasks by workers, resulting in a dynamic change in the economic performance of production. The project of the new products development is considered as a managed hierarchical dynamic system, consisting of a project management board (principal) and teams of agents. The interaction of project participants is formalized as a hierarchical dynamic game. To solve the problem, a numerical algorithm is developed based on a sequential solution of two optimal control problems that are solved using the Bellman dynamic programming method.
Use of graph-based and algebraic models in lifecycle of real-time flight control software
Authors:   Samara State Transport University, 18 1st Bezymyanny Per., 443067, Samara, Russia, Tyugashev Andrey
Published: September 2017

Software faults are the causes for repeating catastrophes in modern space missions. There are various problems in lifecycle of flight control software including lack of adequate models of real-time control algorithms. Real-time control algorithms have the totally distinct nature in contrast to computational algorithms. The paper presents mathematical models suitable for analysis, design and formal verification phases of lifecycle of spacecraft’s flight control software. Two kinds of models - graph-based and algebraic, are being described. These models were successfully introduced in computer aided software engineering toolset for design and verification of spacecraft’s real-time onboard control software.
On stabilizability of the manifold of steady states in a model of the spread of a mutating viruses
Authors:   Samara National Research University, 34 Moskovskoe Shosse, 443086, Samara, Russia, Ermoshkina Julia
Published: September 2017

A system of semilinear parabolic equations with a manifold of steady states is considered and the conditions of stabilizability of this manifold are obtained in the paper.
Mathematical model of power characteristics of the diagnostic fluorimeter
Authors:   Samara National Research University, 34 Moskovskoe Shosse, 443086, Samara, Russia, Grishanov Vladimir N. , Kulikov Victor S. ,   Samara National Research University, 34 Moskovskoe Shosse, 443086, Samara, Russia, Cherepanov Konstantin V. ,   Samara National Research University, 34 Moskovskoe Shosse, 443086, Samara, Russia
Published: September 2017

A mathematical model for evaluation of power characteristics of the optical link of the fluorimeter is developed. The main objective of fluorimeter is measurement of intensity of fluorescent radiation of human skin in vivo. The model is realized in a packet of computer mathematics Mathcad and consists of the units modeling energetic characteristics of passive optical elements, radiators and photodetectors by analytic functions – laws of photometry. For creation of models elements reference, literary and experimental data on them are used. Basic purpose of model – operational quantitative comparing of constructive solutions for instrument by energetic criterion – photodiode`s output signal. The given obviously mathematical functions provide openness of model and accessibility for modification by the user.
Modeling and investigating the stability of a solution to the inverse problem of signal separation
Authors:   Samara State Transport University, 2B Svobody Street, 443066, Samara, Russia, Zasov Valeriy А. , Nikonorov Yeugeniy N. ,   Samara State Transport University, 2B Svobody Street, 443066, Samara, Russia
Published: September 2017

This paper proposes a method for modeling and analyzing the stability of a solution to the inverse problem of extracting individual signals from an additive mixture of several signals that come to measurement points from various signal sources inaccessible for direct measurement. Stability analysis is accomplished by determining those intervals (singular intervals) for parameters of a signal formation model in which steady signal separation is achievable. We have developed algorithms to calculate singular intervals for different parameter variations of a signal formation model—absolute, relative, critical, and their combinations—that simulate various practically significant types of model parameter perturbations that affect the stability of the solution to this inverse problem. The paper also presents the results of computer modeling for the proposed algorithms.
Calculation of the electrostatic field distribution formed by the generator of the off-electrode plasma
Authors:   Samara National Research University, 34 Moskovskoe Shosse, 443086, Samara, Russia, Markushin Maxim A. , Kolpakov Vsevolod A. ,   Samara National Research University, 34 Moskovskoe Shosse, 443086, Samara, Russia, Krichevskiy Sergey V. ,   Samara National Research University, 34 Moskovskoe Shosse, 443086, Samara, Russia
Published: September 2017

A calculation of the electrostatic field distribution in the electrode system of a high-voltage gas-discharge device is made. The application of the conformal mapping method in order to obtain an analytical description of the of equipotentials and field lines distribution is described. The figures of the electrostatic field distribution are calculated, which made it possible to determine their relationship with the cathode-anode distance, the voltage at the electrodes and the hole diameter in the anode of the gas discharge device. The electrostatic field distribution of the device forming the off-electrode plasma is analyzed.
La mujer indígena y su derecho a la participación política en México
Authors: On´Etambalako Wetshoko Jean Cadet Odimba
Published: September 2017

Las diferentes culturas y subculturas pueden y deben coexistir y la tarea del Estado es conservarlas. En ese sentido, en México, uno de los temas que más se abordan es la participación política de la mujer indígena, el cual hace necesario su tratamiento, con fundamento en la prevalencia de dos ejemplos clásicos de desigualdad que analizaremos de forma conjunta en el presente artículo: la desigualdad de género y la desigualdad de los pueblos.
ORIENTACIÓN DE META Y CLIMA MOTIVACIONAL PERCIBIDO EN LAS CLASES DE EDUCCIÓN FÍSICA
Authors: Quintana Moreno Diana Carolina , Quintana Moreno Iliana Paola , Corrêa Thiago Henrique Barnabé
Published: September 2017

El presente estudio es de tipo descriptivo-correlacional dentro del paradigma cuantitativo y de corte trasversal; de acuerdo con Hernández, Fernández, and Baptista (2014) se entiende como la medición del grado de relación existente entre estas dos variables, buscando analizar la relación entre las orientaciones de meta y el clima motivacional percibido de los estudiantes en las clases de Educación Física en colegios públicos y privados de Chiquinquirá, Boyacá (Colombia). Siendo esta una muestra de tipo no probabilística la cual estuvo conformada por 378 sujetos (178 hombres y 200 mujeres) de grado noveno, para la obtención de los datos se utilizaron las adaptaciones al castellano del Cuestionario de Orientación al Ego y a la Tarea, (TEOSQ) y el Cuestionario de Orientación al Aprendizaje y al Rendimiento en las Clases de Educación Física, (LAPOPECQ). El procesamiento de los datos se realizó mediante el software estadístico SPSS 13 en su versión estudiantil.  Los resultados mostraron una relación significativa entre la orientación a la tarea y al clima motivacional orientado al aprendizaje, lo que quiere decir que los estudiantes evalúan su proceso de formación basándose en ellos mismos y perciben que el clima motivacional orientado por el profesor está dirigido más hacia la tarea que hacia el ego.
Motivação para a aprendizagem escolar e estilos criativos
Authors: Siqueira Luciana Gurgel Guida , Wechsler Solange Muglia
Published: September 2017

Considerando a relevância da motivação e da criatividade sobre a aprendizagem e a escassez de estudos brasileiros sobre estes importantes fenômenos, este estudo teve por objetivo investigar a relação entre a motivação para aprender e os estilos de pensar e criar. A amostra foi composta por 190 estudantes do Ensino Médio, 125 mulheres e 65 homens, idade média de 15 anos, residindo em diferentes cidades paulistas. Os instrumentos utilizados foram as escalas “Motivação para a Aprendizagem Escolar” e “Estilos de Pensar e Criar”. A correlação de Pearson utilizada para comparar os fatores das duas escalas apontou relações significativas entre os fatores de motivação relacionados com o envolvimento e persistência nas atividades, o sentimento de competência e valorização das atividades com várias dimensões dos estilos de pensar e criar. Os resultados indicaram a proximidade dos conceitos de motivação e criatividade, demonstrando a necessidade de maior aprofundamento de estudos sobre estes complexos fenômenos de modo a oferecer informações relevantes para a educação e a aprendizagem escolar.
Motivação e criatividade em matemática: um estudo comparativo entre alunas e alunos de ensino médio
Authors: Gontijo Cleyton Hércules , Fleith Denise de Souza
Published: September 2017

O objetivo deste estudo foi investigar a percepção de 100 alunos, dos gêneros masculino e feminino, da 3ª série do Ensino Médio de uma escola particular do Distrito Federal, sobre motivação em Matemática, bem como seu desempenho em um teste de criatividade e em um teste de criatividade em Matemática. A Escala de Motivação em Matemática, o Teste Torrance de Pensamento Criativo e o Teste de Criatividade em Matemática foram utilizados na pesquisa. Para a análise dos dados foi empregado o teste t de Student. Os resultados indicaram que, quanto à motivação em relação à Matemática, os alunos do gênero masculino demonstraram percepção mais favorável em relação a dois dos seis fatores da escala aplicada: “Jogos e Desafios” e “Resolução de Problemas”, enquanto os alunos do gênero feminino demonstraram percepção mais favorável apenas em relação ao fator “Hábitos de Estudo”. Não foram observadas diferenças significativas entre alunos dos gêneros masculino e feminino quanto às medidas de criatividade. Porém, os alunos do gênero masculino apresentaram desempenho superior em comparação aos do gênero feminino em relação à criatividade em Matemática.
Avaliação da aprendizagem e motivação para aprender: tramas e entrelaços na formação de professores
Authors: Souza Nadia Aparecida de , Boruchovitch Evely
Published: September 2017

A avaliação pode processar-se sob a égide de duas distintas lógicas: a da classificação ou a da formação. A prevalência da primeira parece condenar os estudantes a desempenhos sofridos e sofríveis, conforme se constata nos resultados revelados por provas nacionais e internacionais. Afinal, apesar do discurso a propalar um exercício formativo, o que se nota, ainda, em termos de avaliação é a preocupação em separar o joio do trigo. A inquietação quanto às decorrências da avaliação classificatória, principalmente no que tange á motivação para a aprendizagem, orientou a delimitação do objetivo do presente estudo: mapear e analisar as implicações das concepções de avaliação vivenciadas ao longo de um curso de Licenciatura em Pedagogia relativamente à motivação da aprendizagem. A pesquisa quanti-qualitativa valeu-se de metodologia também hibrida, o estudo de caso. Os procedimentos de coleta utilizados foram: questionário e entrevista. Os dados foram analisados à luz da análise de conteúdo clássica. Os resultados parecem apontar relação entre avaliação classificatória, motivação extrínseca e abordagem superficial à aprendizagem, bem como entre avaliação formativa, motivação intrínseca e abordagem profunda à aprendizagem.
Padrão de motivação e desfechos de progresso acadêmico: estudo longitudinal com estudantes de medicina
Authors: Sobral Dejano Tavares
Published: September 2017

O propósito do estudo foi analisar a motivação educacional de estudantes de medicina em relação com indicadores de progresso acadêmico durante a graduação na Universidade de Brasília. A Escala de Motivação Acadêmica foi aplicada em turmas consecutivas ao total de 285 participantes no início do segundo ano. Foram analisados estatisticamente indicadores da Escala e suas correlações prospectivas com índices de rendimento acadêmico e realização de monitoria, e também diferenças nesses índices entre quatro grupos de configuração motivacional identificados em análise classificatória. Os resultados mostraram correlações positivas e significantes entre motivação intrínseca e rendimento acadêmico, bem como entre realização de monitoria e combinação de motivação intrínseca e regulação externa. Grupos com orientação motivacional expressamente autônoma ou mista (autônoma e controlada) realizaram número significantemente maior de monitorias do que grupos com menor autodeterminação motivacional. Os achados são discutidos - a luz da teoria da autodeterminação - quanto aos aspectos de adaptação motivacional e de influências de transição da ambiência educacional. Concluindo, os resultados sugerem que indicadores de motivação caracterizados no início da graduação têm efeito preditivo pequeno, mas significante no desempenho acadêmico continuado e no exercício eletivo de monitoria. Esse desfecho eletivo diferiu significantemente entre estudantes com distintos perfis motivacionais.
Motivação para aprendizagem e prática musical: dois estudos no contexto do ensino superior
Authors: Araújo Rosane Cardoso de , Cavalcanti Célia Regina Pires , Figueiredo Edson
Published: September 2017

Neste texto, são apresentados dois estudos sobre motivação e prática musical desenvolvidos no âmbito do ensino superior. Os estudos foram conduzidos por dois referenciais distintos: Crenças de Auto-Eficácia (Albert Bandura) e Teoria da Autodeterminação (Deci & Ryan). O delineamento metodológico para cada investigação foi o estudo de levantamento conduzido por meio de instrumentos de coleta de dados elaborados de acordo com cada referencial. A população investigada foram alunos de cursos superiores de música de uma instituição de ensino da cidade de Curitiba. Os resultados apontaram possibilidades de verificar o processo motivacional de alunos de cursos de música, a partir da observação de alguns aspectos como a) a confiança do discente nas próprias capacidades e suas crenças em produzir resultados; b) as ações intencionais que possam produzir mudanças; e c) os fatores que podem promovê-las. Buscou-se ao final do texto, enfatizar a observação desses aspectos por parte dos educadores, como meio de promover um processo de aprendizagem musical mais significativo e orientado.
A motivação do aluno
Authors: Vinha Telma Pileggi
Published: September 2017

Resenha do livro: BORUCHOVITCH, E.; BZUNECK, J. A. (Org.). A motivação do aluno: contribuições da psicologia contemporânea. 4. ed. Petrópolis: Vozes, 2009.
Novas figuras da razão em consonância com a sensibilidade
Authors: Santaella Lúcia
Published: September 2017

Para discutir o tema proposto, parto de pressupostos pós-estruturalista na linha de Derrida e de pressupostos, semióticos na linha de C. C. Peirce, segundo os quais a linguagem está no cerne da consciência. Não há consciência nem quaisquer de seus atributos - subjetividade, memória, expectativa, sentimento, tempo, diálogo - sem a linguagem, assim como, sem a linguagem, não haverua ciência e tecnologia, pois estas são, pelo menos em principio, prolongamentos da capacidade humana de falar. Parece estar certa a Biblia ao afirmar que, no principio, era o verbo.
O Projeto Memória Globo reconta o período de redemocratização no Brasil: que história é essa ?
Authors: Fantinatti Márcia
Published: September 2017

Procuramos revelar os principais pontos de vista que tentam justificar práticas jornalísticas pelas quais a Rede Globo foi criticada. Focalizamos de modo específicos as versões contemporâneas apresentadas para episódios ocorridos no período de redemocratização no Brasil. Assim, nosso estudo se refere particulamente à cobertura jornalistica do movimento pelas "Diretas Já" (1983-1984); à polêmica edição de debate presidencial entre os candidatos Collor e Lula (1989), levada ao ar pelo Jornal Nacional, às vésperas do segundo turno; à cobertura jornalística do movimento "Fora Collor", que reinvidicava o impeachmentdo então Presidente da República, Fernando Collor de Mello (1992).
Música, experiência e memória: o desenvolvimento da partitura e as margens do processo
Authors: Rezende Gabriel Lima
Published: September 2017

Este texto se divide em três partes. Em um primeiro momento, apresenta uma leitura do processo de desenvolvimento da notação musical ocidental a partir das obras de Max Weber e Walter Benjamin. Em seguida, discute a relação do início desse processo com o desaparecimento da tradição litúrgica hispânica e, num salto ao presente, tece uma crítica a determinados tipos de política de conservação das tradições.
La reforma de los bancos centrales latinoamericanos. Avances y desafíos
Authors: Carstens Agustín , Jácome H. Luis I.
Published: September 2017

Este artículo analiza la reforma institucional de la política monetaria en la América Latina desde principios del decenio de los noventa. Afirma que el fortalecimiento de la independencia legal de los bancos centrales, junto con las políticas macroeconómicas, ayudó a disminuir la inflación desde tasas anuales de tres dígitos durante los años noventa hasta de un solo dígito en 2004. El ensayo presenta también los principales desafíos de la política monetaria en la actualidad, a saber: el logro de la estabilidad de precios, el restablecimiento de la confianza del mercado en las monedas nacionales y la congruencia de la política a pesar de los efectos de la volatilidad de los flujos de capital. Por último, se identifican las recurrentes crisis bancarias y la ausencia de disciplina fiscal como los riesgos principales para el éxito de la política monetaria de la América Latina.
Regularidades no lineales en índices accionarios. Una aproximación con redes neuronales
Authors: Johnson Christian A. , Padilla Miguel A.
Published: September 2017

Las redes neuronales artificiales (RNA) se han convertido en un importante instrumento para modelar y predecir los rendimientos accionarios. Debido a que son modelos que incorporan variables no lineales (característica de la mayoría de las series económicas y financieras) funcionan mejor que los modelos estadísticos tradicionales, como las regresiones lineales o modelos Box-Jenkins. Este estudio intenta encontrar regularidades en los índices accionarios de 27 países mediante un acercamiento de redes neuronales artificiales y su contraste con modelos lineales rezagados, y aporta evidencia a la discusión actual respecto a la teoría de los mercados eficientes. Asimismo se realizan predicciones extramuestrales dinámicas sustentadas también con una prueba no paramétrica, que confirma excelentes resultados de las redes neuronales en contraste con los modelos autorregresivos tradicionales.
Inflación y crecimiento. Un modelo de covarianza condicional para la Argentina
Authors: Lanteri Luis N.
Published: September 2017

Este trabajo analiza los efectos de la incertidumbre de las tasas de crecimiento del producto real (PIB real) y de las tasas de inflación en las tasas promedio de crecimiento del producto y de la inflación, empleando datos trimestrales de la Argentina, correspondientes a los tres decenios pasados. Para ello se utiliza un modelo GARCH-M, denominado VARMA, que permite probar las hipótesis de ausencia de asimetría y de diagonalidad del proceso de (varianzas) covarianza. Algunos de los resultados del trabajo sugieren que una mayor incertidumbre del crecimiento del producto estaría asociada con mayor crecimiento (teoría del motivo precautorio del ahorro), mientras que la mayor incertidumbre de la inflación reduciría el crecimiento económico, tal como afirman Okun (1971) y Friedman (1977). A su vez, tanto la inflación como el crecimiento del producto mostrarían una respuesta asimétrica significativa a los choques positivos y negativos de igual magnitud.
Costos de cumplimiento de un sistema de permisos de emisión. Aplicación a fuentes fijas en Talcahuano, Chile
Authors: Ponce Roberto , Chávez Carlos
Published: September 2017

En este trabajo analizamos la propiedad de costo-efectividad de un sistema de permisos de emisión transferibles (SPET) frente a una política de comando y control. En contraste con la bibliografía del tema nuestro análisis considera, además de los costos del abatimiento, los costos de la fiscalización para inducir el cumplimiento asociados a cada sistema de control. Las políticas evaluadas permitirían reducir las emisiones de material particulado en fuentes fijas en la ciudad de Talcahuano, Chile. Nuestros resultados indican que reducir el nivel agregado de emisiones de material particulado por medio de SPET es 55% más barato que el que utiliza una política de comando y control. La propiedad de costo-efectividad de la política de mercado es robusta a cambios en los parámetros utilizados. No obstante, cambios en la meta ambiental generan variaciones importantes en la magnitud del ahorro de costos entre las políticas consideradas.
Pobreza y desigualdad en México entre 1950 y 2004
Authors: Székely Miguel
Published: September 2017

Este artículo presenta la primera serie histórica de pobreza y desigualdad en México para el periodo 1950-2004. Observamos que la pobreza se reduce de manera continua e importante entre 1950 y 1984, permanece a niveles casi constantes entre 1984 y 1994 y tiene un abrupto incremento en 1996. Entre 1996 y 2004 se retoma la tendencia decreciente, hasta revertir el aumento de 1996. Por su parte, la desigualdad sigue una pauta de U invertida similar a la curva de Kuznets durante el periodo 1950-1984, pero aumenta de manera casi continua entre 1984 y 2000, para luego reducirse en 2002. Mostramos también que durante 1950-2004 ha existido una fuerte correlación inversa entre la pobreza y el crecimiento económico, y una fuerte correlación positiva entre la pobreza y la inflación, y entre la pobreza y la desigualdad.
Investors’ Preference towards Life Insurance Corporation of India
Authors: Sumathisri B.
Published: September 2017

Investments are both important and useful in the context of present day conditions of the economy. It is a common saying “One paisa saved is one paisa earned”. Life is a roller coaster ride and is full of twists and turns. Insurance policies are to safeguard against the uncertainties of life. The insurance principle comes to be more and more used and useful in modern affairs. Not only does it serve the ends of individuals, or groups, it tends to pervade and to transform modern social order, too. At this juncture, the extent to which Life Insurance goes to attract the investors has been undertaken in this study. The analysis of the data evidenced that investment were not determined by either income or education of the respondents, instead they understood the necessity of investment in life insurance for their future requirements which is said to be forced Investment. So, it has been concluded that making sound investment decision requires both knowledge and skill apart from other factors.
Exploring the Practice of Visual Communication Design in the New Era Based on the View of "Art + Technology"
Authors: Luo Mingying
Published: September 2017

With the development of society, for application of the disciplines of art and design, the ability of "art + technology" is to develop the inevitable demand for the development of the times. Then, how to learn within four years of university studies, so that students can master good artistic and technical skills? This article combines with teaching practices from the perspective of setting up of the curriculum system and teaching by engineers outside the school. The aim is to meet the social needs of the subject training so as to explore the visual communication of professional education reform, with its professional education research to provide reference.
Ranking the effect of services marketing mix elements on the loyalty of customers by using Topsis method (case study: city bank branches in Tehran)
Authors: Azimi Hossein
Published: September 2017

Successful companies do not only pursue sale, but they are looking for satisfactions of customers and their loyalty. This study aims to rank effect of services marketing mix elements on the customers’ loyalty in the City Bank. Method of this research is survey and causal-comparative and domesticated questionnaire was used for gathering data which its validity was confirmed by experts and its reliability with Cronbach alpha 0.908. Statistical sample size was 384 loyal customers of City Bank in Tehran based on Cochrane formula and simple random sampling was used as sampling method. Findings showed that there is significant relationship in average level between physical factors and environmental factors including distribution of physical facilities and customer loyalty and the relationship between competence related factors including promotion of employees or customers’ loyalty is strongly significant. Besides, there is significant relationship between services related factors including product, price, operation management and quality of services or customers’ loyalty in moderate level. It is suggested that for attracting loyal customers, more attention should be paid to promotion which has very strong relationship with customers’ loyalty. It is suggested that City Bank increases the motivation of employers in providing careful and rapid services for improving productivity and services quality by suitable incentives.
Caracterización física y química de la nuez y el aceite de nueve variedades de Macadamia integrifolia, M. tetraphylla e híbridos
Authors: Aquino-Bolaños Elia Nora , Mapel-Velazco Laura , Chávez-Servia José L. , Corona-Velázquez Rubén , Herrera-Meza Socorro , Verdalet-Guzmán Iñigo
Published: September 2017

La especie Macadamia pertenece a la familia Proteacea, y las únicas especies de interés comercial son M. integrifolia y M. tetraphylla. Existe una creciente demanda de las nueces debido a su alto valor nutrimental y funcional ya que numerosos estudios han demostrado los efectos protectores de su consumo disminuyendo el riesgo de padecer enfermedades cardiovasculares. Sin embargo, hay una alta variabilidad en la calidad de la nuez y sus productos derivados.Método. En la nuez se registraron los parámetros de color L*, a* y b* y se analizó humedad, azúcares, polifenoles y actividad antioxidante. En el aceite se evaluó humedad, índice de saponificación, índice de ácidos grasos libres (AGL) e índice de peróxido (IP).Resultados. La humedad de la nuez contrastó entre variedades (22.9 a 40.6 g 100 g-1), contrario a los parámetros de color que fueron similares (L*= 60.2 a 68.8). La variedad Victoria por su mayor contenido de azúcares (57.5 mg glucosa g-1) podría destinarse para consumo en fresco. UCLA y Huatusco presentaron el mayor contenido de polifenoles (>1.2 mg EAG g-1) y actividad antioxidante (>7.0 µmol Eq. trolox g-1). El aceite presentó baja humedad (≤0.22%) y de AGL; además, el IP fue inferior al límite permitido para aceites vegetales vírgenes (15 m Eq. O2 kg-1).Conclusión. De acuerdo con las características físico-químicas de la nuez y aceite de las distintas variedades se recomienda usos diferenciados preferentemente en la industria alimentaria.
Sistemas de innovación y patrones de interacción local en el sector rural en México
Authors: Espejel García Anastacio , Barrera Rodríguez Ariadna Isabel , Cuevas-Reyes Venancio , Ybarra Moncada Ma. Carmen , Venegas Venegas José Apolonio
Published: September 2017

El objetivo fue identificar las fuentes de innovación y patrones de interacción en dos sistemas de innovación pecuarios en México con la finalidad de proponer estrategias que permitan mejorar los procesos de aprendizaje e innovación de este tipo de sistemas. A través del estudio de dos sistemas de innovación pecuarios se obtuvieron indicadores de redes sociales que permitieran la identificación de actores y los mecanismos de interacción que siguen en la adopción de innovaciones. Los resultados encontrados muestran que los patrones de interacción responden a la necesidad de innovar y determinan dos tipos de relaciones: una dirigida y la otra liderada por la oportunidad del mercado. Existen agentes que fungen como intermediarios de la innovación con la capacidad de articular al sistema de innovación, vincular a los actores y llevar la innovación hasta el usuario final. Se concluye que los intermediarios con mayores vínculos definen las fuentes, tipos de innovación y activan los patrones y mecanismos de interacción entre los actores de los sistemas de innovación.
Treatment of high strength aqueous wastes in a thermophilic aerobic membrane reactor (TAMR): performance and resilience
Authors: Collivignarelli Maria Cristina , Abbà Alessandro , Bertanza Giorgio , Barbieri Giacomo
Published: September 2017

In the present work, the thermophilic aerobic membrane reactor technology was studied for the treatment of high strength aqueous wastes mainly containing dyes, surfactants and solvents. The thermophilic biomass resilience and the process stability under critical conditions (such as rapid rise of the mixed liquor pH, oxygen supply interruption, etc.) were also evaluated. The experimental work was carried out with the use of a pilot plant at semi-industrial scale, which was managed throughout for 14 months; the operation temperature was 49 °C and the organic loading rate was increased from 3 to 12 kgCOD m−3 d−1. Critical conditions, especially the interruption of oxygen supply, affected the pilot plant performance but did not cause a complete system break down. After the temporary reduction of process performance, also proven by the decrease in the oxygen consumption, the normal working conditions were restored. Moreover, the longer non-aerated phase involved a significant reduction (40%) of volatile suspended solids concentration in the biological reactor and the increase of 30% in foaming power; nevertheless, once the oxygen supply was reactivated, optimal conditions were rapidly restored. Therefore, the study showed the high resilience of the thermophilic biomass, which was able to recover full functionality after critical events.
DISPUTAS IDENTITÁRIAS: PÓS-MODERNIDADE E TEORIA QUEER
Authors: Meneses Cleber Souza
Published: September 2017

Neste artigo discorreremos sobre identidades de gênero, partindo da premissa que toda identidade é uma construção social e relacional e todo indivíduo é fragmentado e múltiplo.  Tomando como referência @s transgêneros como sujeit@s da pós-modernidade, iniciaremos com uma revisão bibliográfica para compreender como a mulher lidou historicamente com o patriarcalismo. Fazendo uma relação entre a construção do Ser mulher em uma relação de alteridade com o seu Outro, o homem, perceberemos como os discursos das instituições sociais as categorizavam com um grau de inferioridade, uma vez que por muito tempo foi nomeada e construída pelos discursos masculinos. Esse percurso de primeiro pensar a construção da mulher foi necessário para compreendermos como a população trans feminina lidou com a construção de suas identidades perante as relações de poder, em um debate a partir da teoria queer, refletindo como el@s tornaram-se sujeit@s “fora da norma” (abjetos) em uma sociedade constituída pelo viés da heteronormatividade.
CONTEXTOS INTERÉTNICOS E AFIRMAÇÃO IDENTITÁRIA NO BRASIL CONTEMPORÂNEO: UMA ANÁLISE SOBRE OS PROCESSOS DE FORMULAÇÃO E DE PRECARIZAÇÃO DA POLÍTICA NACIONAL DE ATENÇÃO À SAÚDE DOS POVOS INDÍGENAS
Authors: Martins Fábio do Espírito Santo
Published: September 2017

Algumas considerações etno-históricas são apropriadas para ampliar a compreensão acerca da participação indígena na reformulação dos processos normalizadores da sociedade brasileira, mais precisamente, no contexto de transitoriedade em direção à redemocratização do país após o regime ditatorial civil-militar de governo. Sendo necessário, portanto, evidenciar neste processo, o protagonismo indígena e uma construção identitária dinâmica, efetuadas sempre a partir da lógica cultural destes povos. Desta forma, este trabalho propõe analisar a historicidade que circunscreve o contexto das relações interétnicas entre os povos indígenas e a sociedade envolvente, sobretudo, no que se referem a formulação e a aplicação da Política Nacional de Atenção à Saúde dos Povos Indígenas. Para tanto, estabelece a interlocução entre dois contextos específicos; respectivamente, o processo da sua formulação, onde é enfatizado o protagonismo indígena, e, portanto, uma agência política, já que expressa um sofisticado sistema de afirmação identitária. E, em seguida, a situação contemporânea da sua precarização, processo que está circunscrito à ameaça do retrocesso das garantias constitucionais, tanto quanto, de maneira específica, está associado à progressiva redução dos direitos dos povos indígenas na atualidade brasileira. Assim, a etnografia e as pesquisas documentais resultaram na percepção de que o contato estabelecido entre o Estado e os povos indígenas, priorizou e ainda prioriza a formulação das políticas e dos serviços de saúde para estes povos, concebendo-os como sinônimos de ampliação ao acesso aos direitos de atendimento à saúde de modo universalizante e homogeneizador, desconsiderando as especificidades etnoculturais e não assegurando a acessibilidade a direitos constitucionais que afirmam a diferença.
FROM TATTOOS, VEILS AND NOTEBOOKS: REPRESENTATIONS OF OTHERNESS AND IDENTITY CONSTRUCTION PROCESSES IN YOUNG STUDENTS WITH MIGRANT BACKGROUNDS IN SPAIN
Authors: Olmos Alcaraz Antonia , Rubio Gómez María , Bouachra Outmani Ouafaa
Published: September 2017

This study relationally analyses the processes of the construction of difference and the processes of identity construction in which young adolescents and pre-adolescents with migrant backgrounds within formal educational contexts are involved. The text aims to show and describe how otherness and identity work in an intersectional way. Our analysis considers intersectionality as the most appropriate way of approximation to the reality observed. To do so, we work from biographical interviews and life stories of young people produced through our own respective fieldwork. This material had been analyzed looking for the relations between identity categories (gender, religion, nationality...) and how these categories are interpreted for the young adolescents involved in the research. We research in twelve andalusian high schools with students, teachers and families. Along three scholar years, we made 132 interviews and 13 discussion groups. This allows us to address the theoretical objects of the study (otherness/identity) in a contextual and process-based way.
Imaging of the Unstable Shoulder
Authors: Baudi Paolo , Rebuzzi Manuela , Matino Giovanni , Catani Fabio
Published: September 2017

Background:

Unstable shoulder can occur in different clinical scenarios with a broad spectrum of symptoms and presentations: first-time (or recurrent) traumatic acute shoulder anterior dislocation or chronic anterior instability after repeated dislocations.

Imaging in unstable shoulder is fundamental for choosing the right treatment preventing recurrence.

The goal of imaging depends on clinical scenario and patient characteristics.

Method:

Careful selection and evaluation of the imaging procedures is therefore essential to identify, characterize and quantify the lesions. Proper imaging in unstable shoulder cases is critical to the choice of treatment to prevent recurrence, and to plan surgical intervention.

Results:

In acute setting, radiographs have to roughly detect and characterize the bone defects present. At about 7 days, it is recommended to perform a MR to demonstrate lesions to labrum and/or ligaments and bone defects: in acute setting, the MRA is not necessary, because of effusion and hemarthrosis that behave as the contrast medium.

In recurrence, it is fundamental not only to detect lesions but characterize them for planning the treatment. The first study to do is the MRI (with a magnetic field of at least 1.5 Tesla), and if possible MRA, above all in younger patients. Then, on the basis of the pathologic findings as bipolar lesion or severity of bone defects, CT can be performed. PICO method on 2D or 3D CT is helpful if you need to study a glenoid bone loss, with the “en face view” of glenoid, while a 3D CT reconstruction with the humeral head “en face view” is the gold standard to assess an Hill-Sachs lesion.

Conclusion:

The clinical diagnoses of anterior shoulder instability can be different and acknowledgement of imaging findings is essential to guide the treatment choice.

Imaging features are quite different in chronic than in acute scenario. This requires appropriate indications of many different imaging techniques.
The Posterior Unstable Shoulder: Natural History, Clinical Evaluation and Imaging
Authors: Díaz Heredia Jorge , Ruiz Iban Miguel Angel , Ruiz Diaz Raquel , Moros Marco Santos , Gutierrez Hernandez Juan Carlos , Valencia Maria
Published: September 2017

Background:

There is a low incidence of posterior instability which is present in only 2% to 10% of all unstable shoulders. The posterior instable shoulder includes different manifestations like fixed dislocation, recurrent subluxation or dislocation.

Methods:

Research and online content related to posterior instability is reviewed. Natural history, clinical evaluation and imaging are described.

Results:

An awareness of the disorder, together with a thoughtful evaluation, beginning with the clinical history, usually leads to proper diagnosis. An appropriate physical exam, taking in account hyperlaxity and specific tests for posterior instability should be done.

Conclusion:

Posterior shoulder instability is an uncommon condition and is challenging to diagnose. There is not a single injury that is responsible for all cases of recurrent shoulder dislocation or subluxation, and the presence of soft tissue lesions or bone alterations should be evaluated, with the use of adequate simple radiology and multiplanar imaging.
Application of Tranexamic Acid in Total Knee Arthroplasty – Prospective Randomized Trial
Authors: Guerreiro Joao Paulo Fernandes , Badaro Bruno Scatolon , Balbino Jose Rodolfo Martines , Danieli Marcus Vinicius , Queiroz Alexandre Oliveira , Cataneo Daniele Cristina
Published: September 2017

Background:

The use of tranexamic acid (TXA) in total knee arthroplasty (TKA) has shown good results. Bleeding may cause local complications consequently greater pain and reduced function postoperatively. No study has related the use of TXA to these facts.

Objective:

The aim was to evaluate the effects of TXA haemoglobin, Western Ontario and McMaster Universities Index (WOMAC), pain intensity and flexion gain after TKA.

Methods:

43 patients were randomized and then underwent TKA. TXA was applied to 22 of these patients before closure of the joint capsule. Haemoglobin measurements (mg/dL) were taken preoperatively and 24 and 48 hours after surgery. The WOMAC questionnaire and pain visual analogue scale (VAS) were applied, and flexion gain was measured up to the second postoperative month. Statistical analysis compared the results to determine whether there were differences between the groups for each of the evaluated times.

Results:

There were differences in favour of the drug 48 hours postoperatively for the haemoglobin variable (p = 0.01), in pain evaluation, 24 and 48 hours, postoperatively (p < 0.01) and in flexion gain, 24 hours after surgery (p = 0.03). There were no significant differences between the groups in the haemoglobin evaluation 24 hours postoperatively, in pain assessment 7 days, 21 days and 2 months, postoperatively, in flexion gain 48 hours, 7 days, 21 days and 2 months, postoperatively and in WOMAC after 2 months.

Conclusion:

In addition to reducing bleeding, topical TXA improved pain and increased flexion gain in the first hours after TKA.

Trial Registration:

RBR-9b4qgq
Relation of Plasma Obestatin Levels with BMI and HOMA-IR in Syrian Obese Patients with Type 2 Diabetes
Authors: Alhalbouni Hiba , Kabalan Youns , Alquobaili Faizeh
Published: September 2017

Background:

Obestatin is a novel hormone derived from preproghrelin, which was reported to inhibit appetite and gastric motility.

Study Aim:

This study aimed to investigate plasma obestatin levels in obese patients with T2D patients, which had not been studied clearly in last researches.

Methods:

23 normal weight subjects, 35 obese subjects and 31 obese patients with T2D participated in the study, the body mass index was calculated. Fasting glucose and insulin levels were measured and the homeostasis model assessment of insulin resistance (HOMA-IR) was determined. Plasma obestatin levels were measured with enzyme-linked immune sorbent assay (ELISA). The relationship between plasma obestatin levels and biochemical parameters was also analyzed.

Results:

Fasting obestatin was significantly lower in obese patients with T2D, comparing to control subjects (mean=6.35 vs12.38ng/ml) and to the non-patients obese group (mean=6.35 vs 7.76 ng/ml). Obestatin levels correlated significantly and negatively with BMI (R=-0. 451; P=0. 01), basal insulin levels (R=-0.737, P<0.0001) and HOMA-IR (R=-0. 764, P<0.0001) in diabetic patients.

Conclusion:

Our results suggest that obestatin may contribute to body weight regulation, and insulin sensitivity could be affected by obestatin levels.
An Analysis of Students’ Motivation Toward English Learning As Second Language Among Students In Pritchard English Academy (PEACE)
Authors: Suryasa I Wayan , Prayoga I Gede Putu Adhitya , Werdistira I Wayan Astu
Published: September 2017

This research aimed at investigating the students’ motivation in English learning as a second language. The method used was a survey by randomly asking the students in Pritchard English Academy (PEACE) to fill out a questionnaire which adapted from Attitude Motivation Test Battery (AMTB) designed by R.C. Gardner. The questionnaire was administered to a group of 30 students who come from intermediate until advanced level. The data were analyzed by using SPPS program. It was used to find out mean score and standard deviation. The main findings show that the students are relative “highly” motivated and found to be slightly more “instrumentally” motivated to learn English. This reveals that instrumental motivation is a significant factor among this group of students learning English. Based on this study’s findings, some relevant and useful motivational learning implications are recommended for enhancement and improvement of the students’ motivation.
Comparative effectiveness of the biosimilar CT-P13
Authors: Yoo Dae Hyun
Published: September 2017

The first biosimilar infliximab, CT-P13 (infliximab-dyyb) has been used for the treatment of inflammatory diseases for 4 years. CT-P13 has highly similar efficacy and safety profiles with a lower price than the originator infliximab and has been approved in 81 countries. Despite approval for clinical use, some knowledge gaps still limit the widespread and pertinent use of biosimilar CT-P13. One of the most important factors for proper utilization of CT-P13 for the treatment of immune-mediated inflammatory diseases is confidence in CT-P13, which could be enhanced by scientific evidence supporting the biosimilarity of CT-P13. Overall, five randomized controlled studies have been performed. For the other extrapolated indications, many observational induction and switching studies also support the utility of CT-P13 in the treatment of inflammatory diseases. Here, we review profiles of CT-P13 including physicochemical properties, clinical efficacy and safety data in all indications and current status.
Eating habits and intake of macro-and micronutrients among adolescents in the city of Ribeirão Preto (SP)
Authors: Del Ciampo Luiz Antonio , Del Ciampo Ieda Regina Lopes , Vieira Mariana Vilela
Published: September 2017

Objective: to know the intake of macro and micronutrients among a group of adolescents in the city of
Ribeirão Preto (SP). Methods: observational study in which it is observed the intake and eating habits
of adolescents, through the food frequency questionnaire validated for adolescents and the food record
of 3 days. Results: the participants were 130 adolescents, of whom 81 (62.3%) were female and 49
(37.6%) male, with a mean age 196.8 ± 11 months. Food items with the highest intake were rice, beans,
candies, bread, sugar and milk. The percentage of energy from macronutrients were 56.4% for the
group of carbohydrate, 15.3% protein and 28.3% lipid. Regarding minerals, it was observed a low intake
than the recommended for calcium, adequate intake of iron and zinc and, notably, excessive sodium
intake. Conclusions: The results showed that adolescents consume a large amount of simple sugars,
saturated fats, trans fats, cholesterol and sodium, which, in excess, can cause harm to the health of
individuals in full stage of development. Therefore, the evident need to implement food education
programs targeted to adolescents and their families, in order to change consumer’s habits, specially the
reduction of sodium present in processed foods as well as those prepared in restaurants, decrease of
sugar consumption and increase of eating vegetables and foods with calcium.