bluuebunny/crossref_metadata_2025 huggingface dataset:
Senûsî’nin Ümmü’l-Berâhin Adlı Risalesinde Peygamberlerin Sıfatlarının İspatında Kullanılan İstidlâller
Authors: KARAGÖZ Nail
Published: June 2018

Muhammed b. Yusuf es-Senûsî, IX. (XV.) yüzyıl Kuzey Afrika’sının önemli Eşʻarî kelâmcılarındandır. Onun başta kelâm ve tasavvuf olmak üzere ilâhiyât ilimlerinin pek çoğunda eserler kaleme aldığı bilinmektedir. Bu ilimlerin arasında mantık ilminin de yer almış olması onun, “istidlâl” konusunda söz sahibi olduğunu göstermektedir. Senûsî’nin Ümmü’l-berâhin adlı risâlesi “Lâilâhe illallah Muhammedün Resulullah” sözünün bütün akîdenin kaynağı olduğu inancını delillendirmek maksadıyla yazılmıştır.Allah’ın varlığı ve sıfatlarının ispatı için kullandığı istidlâller yanında o, risâlesinde “Muhammedün Resulullah” sözüne dayanarak peygamberlerde bulunması gereken özellikleri de ortaya koymuş ve sıdk, emânet ve tebliğ olarak saydığı bu özellikleri çeşitli delillerle ispatlamaya çalışmıştır. Senûsî, bu sözün kapsamına diğer peygamberlere, meleklere, semavî kitaplara, âhiret gününe inanmanın da girdiğini savunur. Ona göre bunun sebebi, Hz. Peygamber’in bütün bunları tasdik etmeyi din olarak getirmiş olmasıdır. O, “Ümmü’l-berâhin”de peygamberlerin sahip oldukları sıfatlarla ilgili istidlâllerini daha çok hulfî kıyâsa dayandırmıştır. Bunun yanında muʻcize ile istidlâl, iki aslı bir sonuca göre düzenleme, zincirleme kıyâs, matvî kıyâs formlarını da kullanmıştır.
Kelâm’in Kozmolojik Argümani ve Modern Bilim
Authors: DOKO Enis
Published: June 2018

Hudus delili (Günümüz batı felsefesinde Kelam’ın kozmolojik kanıtı olarak da bilinir) Tanrı’nın varlığı lehinde geliştirilmiş, evrenin zamanda bir başlangıcı olduğu fikrine dayanan bir delildir. Bazı teistler modern bilimin, özellikle modern kozmoloji ve termodinamiğinin ikinci yasasının argümanın kilit öncülü olan evrenin zamanda bir başlangıcı olduğu iddiasını desteklediğini iddia etmişlerdir. Diğer taraftan bazı ateistler Kuantum Mekaniğinin parçacıkların nedensiz olarak yaratılabileceğini gösterdiğini, bunun da başlangıcı olan her şeyin bir nedeni olduğunu ifade eden Hudus delilinin nedensellik öncülünü yanlışladığını iddia etmişlerdir. Bu makaledeki amacımız bu iddiaları değerlendirip, modern bilimin Müslüman kelamcılar tarafından geliştirilen bu delil hakkında ne söylediğini belirlemektir.
Kerrâmiyye ve İman Kavramı
Authors: ŞAHİN Mehmet Kenan
Published: June 2018

Bu makalenin amacı Horasan’da Muhammed b. Kerrâm (190/805-255/868)’ın öncülüğünde ortaya çıkan Kerrâmiyye mezhebinin iman tanımını dînî temelleri bakımından tahlil etmektir. Kerrâmiyye, imanı amele indirgeyen ve imanda kalp ile tasdiki imanın gerçekleşmesi için asli unsur sayan anlayışlara karşılık iman tanımında salt sözlü beyana yer vermiştir. Böylelikle de münafığın imanını geçerli saydıkları ve ameli imandan dışladıkları varsayılmış ve bu gerekçeyle de birçok kelâm âlimi tarafından eleştirilmiştir. Kerrâmîlerin iman teolojisine ilişkin bilgilerimizin kaynağının bizzat onlara ait eserler olmaması ve onlara ilişkin bilgilerin ancak muhaliflerinin eserlerinden öğrenilme imkânı olması Kerrâmiyye’nin imanın dil ile ikrar olduğu tezinin tam olarak anlaşılmasını güçleştirmiştir. Kur’ân’ı Kerim bağlamında iman kavramı ele alındığında imanın Kerrâmîlere isnad edilen iman doktrinlerinde anlaşıldığı şekliyle salt ikrârdan ibaret tek bir yönünden söz edilemeyeceği imanın sözle beyanının dışında ilgi, irade, bilgi, tasdik, gayb ve amel gibi yönlerinin de olduğu, Kerrâmiyye’nin de esasında iman tanımında bu unsurlara yer vermemekle birlikte imanın bu yönlerini inkâr ettiklerine dair güvenilir bir bilgiye ulaşılamamaktadır.
Sp1 mediates phorbol ester (PMA)-induced expression of membrane-bound guanylyl cyclase GC-A in human monocytic cells*
Authors: Mitkiewicz Małgorzata , Bac Bernadeta , Kuropatwa Marianna , Kurowska Ewa , Matuszyk Janusz , Siednienko Jakub
Published: June 2018

Cyclic guanosine monophosphate (cGMP) is synthesized by two types of enzymes: particulate (membrane-bound) guanylyl cyclases (pGCs) and soluble (cytosolic) guanylyl cyclases (sGCs). sGCs are activated primarily by binding of nitric oxide to their prosthetic heme group while pGCs are activated by binding of peptide ligands to their extracellular domains. One of them, pGC type A (GC-A) is activated by atrial and brain natriuretic peptides (ANP and BNP, respectively). Human monocytes isolated from peripheral blood mononuclear cells have been shown to have sGC expression without concomitant expression of GC-A. However, GC-A activity appears in monocytes under certain conditions but a molecular mechanism of GC‑A expression is still poorly understood. In this report we show that phorbol ester (PMA) induced transcription of the gene encoding GC-A in human monocytic THP-1 cells. Moreover, PMA-treated THP-1 cells have been found to raise cGMP content following treatment with ANP. Studies using pharmacological inhibitors of protein kinases have suggested involvement of protein kinase C (PKC), mitogen extracellular kinases (MEK1/2), and extracellular signal-regulated kinases (ERK1/2) in PMA-induced expression of the GC-A encoding gene in THP-1 cells. Finally, we show that PMA stimulated binding of Sp1 transcription factor to GC-rich DNA sequences and mithramycin A (a selective Sp1 inhibitor) inhibited expression of the GC-A mRNA in PMA-treated THP-1 cells. Taken together, our findings suggest that the PMA/PKC/MEK/ERK signaling pathway induces Sp1-mediated transcription of the GC-A encoding gene in human monocytic THP-1 cells.
Determinant Factors Influencing Impulse Buying Behavior of Turkish Customers in Supermarket Setting
Authors: Akyuz Aysen
Published: June 2018

Impulse buying is a common phenomenon of consumption today and its getting great attention from consumer researchers as well as marketers. It is important for companies to have a good understanding of factors triggering impulse buying. The main aim of this study is to identify the determinants influencing Turkish consumers’ impulse buying behavior in supermarkets. 593 surveys were taken into analysis which were collected between the dates 5-10 December, 2017. Regression analysis, t-test and ANOVA test were conducted to test the hypotheses. While some independent variables such as sales promotion and credit card usage found to be the affecting factors of impulse buying; variables such as income level is found to have no relation with impulse purchasing.
Client Selection Criteria and Performance of Incubator Centers in Kenya
Authors: Kinya Miriti Jane , Wanjau Kenneth L , Omondi Humphrey R
Published: June 2018

Business incubators are regarded as entrepreneurial hubs, unleashing entrepreneur’s ideas and businesses into the market, in turn, jobs are created and the economy of the area is improved. Due to the stiff competition for placement into an incubator program it is imperative for incubator management come-up with strategies of being more efficient and effective in utilizing resources to achieve superior performance. Hence the need to critically select clients, whose ideas fit the incubator’s mission and upon graduation create high growth businesses, with a higher survival rate of 90%. The study is anchored on Resource Based Theory. The study used a correlation design that focused on causal relationship of client selection criteria and incubator centre performance (ICP). The study population was 41 incubator managers in Kenya. After missing data analysis two respondents were expunged leaving 39 respondents. Secondary data was obtained from published sources such as company reports, manuals and research done by other scholars. Structural Equation Modelling (SEM) approach was used to analyze the measurement model and test the hypothesized relationship in this study. Simple linear regression model was used to measure the strength of the relationship between client selection criteria and performance incubator centre in Kenya. The results of the combined effect model indicated that client selection criteria had a significant relationship with performance of incubator centres.
SOBRE "UMA GEOGRAFIA DOS TEMPOS E DOS CLIMAS"
Authors: Ganho Nuno
Published: June 2018

Recensão sobre um recém publicado Tratado de Climatología em língua espanhola
A RELAÇÃO ENTRE A URBANIZAÇÃO E A EPIDEMIA DA OBESIDADE A NÍVEL MUNDIAL E EM PORTUGAL / The relation between urbanization and obesity epidemic worldwide and in Portugal
Authors: Pereira Margarida , Nogueira Helena , Nossa Paulo
Published: June 2018

Enquadramento: A obesidade é um grave problema de saúde pública em todo o mundo devido ao seu impacto negativo na saúde dos indivíduos e aos altos custos para os sistemas de saúde. O objetivo deste estudo foi avaliar a relação entre a proporção de população urbana e a prevalência de obesidade em todo o mundo e em Portugal. Métodos: Trata-se de um estudo transversal que utilizou dados disponíveis gratuitamente quanto à percentagem de população urbana e prevalência de obesidade, em nível global e nacional. Os dados recolhidos foram organizados por país, a nível mundial e, por regiões em Portugal. Posteriormente, os dados foram mapeados e os resultados foram representados através de gráficos de dispersão, com linha de regressão e o respetivo coeficiente de determinação. Resultados: Os resultados deste estudo mostram que existe uma correlação entre obesidade e urbanização (r = 0,502, p <0,01) em todo o mundo e em Portugal. Conclusões: As evidências sugerem que a obesidade poderá ser determinada por características ambientais, como o nível de urbanização do local onde as pessoas vivem e trabalham. A população urbana tende a ser menos ativa e ingerir mais alimentos altamente calóricos, o que leva ao sobrepeso e à obesidade.
EVAPOTRANSPIRAÇÃO DE REFERÊNCIA PARA CAMPOS SALES – CE MÉTODOS COMBINADOS E EMPÍRICOS./ Evapotranspiration of reference for Campos Sales (Ceará): combined and empirical methods.
Authors: Anchieta de Carvalho Thayslan Renato , Brasil José Bandeira , Lima Junior Juarez Cassiano , Macêdo Kleber Gomes
Published: June 2018

A evapotranspiração está relacionada ao efeito da demanda hídrica atmosférica sobre as exigências das plantas. Em regiões semiáridas que são caracterizadas pela irregularidade pluviométrica, altas temperaturas e menor disponibilidade hídrica, assumem particular importância no gerenciamento da agricultura irrigada. O objetivo deste trabalho foi avaliar o desempenho dos modelos, Hargreaves e Samani, Camargo, Radiação FAO e Makkink em relação ao método padrão Penman-Monteith FAO 56 para a cidade de Campos Sales-CE. Foram utilizados dados climáticos diários de umidade relativa do ar (UR), velocidade do vento (U2), temperatura máxima (Tmax), média (Tmed) e mínima (Tmin) do ar e insolação (Ins) referente ao período entre 1962 e 2016 (47 anos). Os dados utilizados foram provenientes de uma estação meteorológica convencional do Instituto Nacional de Meteorologia (INMET), localizada em Campos Sales-CE. Os modelos foram analisados utilizando os índices estatísticos Índice de Wilmontt (Id), coeficiente de eficiência de Nash-Sutcliffe (E) e Raiz Quadrada do Erro Médio (RMSE). O método que apresentou melhores estimativas foi o FAO 24-Radiação, com os índices estatísticos mais elevados. O método de Makkink apresentou os piores resultados para a cidade de Campos Sales, subestimando a evapotranspiração de referência durante todos os períodos do ano.
USO DE VEÍCULO AÉREO NÃO TRIPULADO NA AVALIAÇÃO DE ÁREAS DE PROTEÇÃO PERMANENTE NO MUNICÍPIO DE HUMAITÁ-AM / Use of an aircraft not populated in the evaluation of Areas of Permanent Protection in the municipality of Humaitá / AM
Authors: Lima Luan Barros , Castro Amazonino Lemos , Duarte Miqueias Lima , Valente Keith Soares
Published: June 2018

No Brasil, as Áreas de Preservação Permanente-APP definidas pela Lei Federal de n° 12.651/12, têm como objetivo a manutenção da área coberta ou não por vegetação nativa, como forma de preservar os recursos hídricos, a estabilidade geológica, a biodiversidade, o fluxo gênico de fauna e flora, atenuação de processos erosivos e assegurar o bem-estar das populações humanas. Este estudo teve por objetivo mapear as áreas de APP com o uso de um VANT e verificar sua conformidade perante a legislação vigente. O estudo foi desenvolvido na área urbana do município de Humaitá, sul do estado do Amazonas, no bairro Nossa Senhora do Carmo, que faz limite com o rio Beem. Foi utilizado um drone para a aquisição das imagens aeroespaciais. A partir das imagens obtidas foi possível observar que o rio Beem deve possuir uma área de APP com largura de 50 metros, conforme estabelecido o Novo Código Florestal. Verificou-se que a área de APP no entorno do rio Beem apresenta um total de 289.031 m² (28.90 ha), sendo que cerca de 12,7% encontra-se irregular. De modo geral, esses locais estão ocupados por áreas residenciais e pequenas indústrias, além de servir como ponto de embarcações e de pequenas balsas, o que provocam vários impactos. Os resultados demostram que o uso do VANT constitui uma excelente ferramenta na obtenção de dados a fim de auxiliar no diagnóstico de problemas sociais e ambientais em contextos urbanos, possibilitando formas de análise em grande escala, e que forneça resposta rápida e de baixo custo.
RESPOSTA HIDROLÓGICA AS MUDANÇAS CLIMÁTICAS EM UM MUNICÍPIO DA AMAZÔNIA/ Hydrological response to climate change in an Amazon City
Authors: Vieira Artur Sales de Abreu , Crispim Diêgo Lima , Rodrigues Rodrigo Silvano Silva , Silva Irlane Quaresma da , Pessoa Francisco Carlos Lira
Published: June 2018

A precipitação está fortemente relacionada com os fatores climáticos que contribuem para sua formação, sendo muito variável no tempo e espaço. O objetivo deste trabalho foi realizar uma análise temporal da variabilidade pluviométrica no município de Capanema-PA na escala mensal e interanual. A cidade de Capanema está localizada no estado do Pará, e dentro dos limites da bacia amazônica. Foram utilizados dados de precipitação obtidos do Sistema de Informação Hidrológica da Agência Nacional de Águas (ANA) no período de 1975 a 2005. Para identificar a existência de uma tendência nas séries temporais, foram utilizados os testes de Mann Kendall e Spearman, estatística descritiva. Posteriormente, foi medido o "ano padrão" utilizando uma metodologia proposta por Monteiro (1976). Os resultados mostraram que os anos de chuvosos foram 1975 e 1985, e os anos menos chuvosos foram 1983, 1992 e 2004. Os testes não paramétricos indicaram uma tendência de precipitação, mesmo tempo em que os níveis de chuvas estão diminuindo timidamente ao longo dos Anos Verificou-se que o maior número de eventos extremos ocorre na estação seca. Pode-se concluir que o município apresenta grande vulnerabilidade a eventos atípicos, nos meses mais secos, especialmente no mês de outubro.
Generalized hydrodynamics of classical integrable field theory: the sinh-Gordon model
Authors: Bastianello Alvise , Doyon Benjamin , Watts Gerard , Yoshimura Takato
Published: June 2018

Using generalized hydrodynamics (GHD), we develop the Euler
hydrodynamics of classical integrable field theory. Classical field GHD
is based on a known formalism for Gibbs ensembles of classical fields,
that resembles the thermodynamic Bethe ansatz of quantum models, which
we extend to generalized Gibbs ensembles (GGEs). In general, GHD must
take into account both solitonic and radiative modes of classical
fields. We observe that the quasi-particle formulation of GHD remains
valid for radiative modes, even though these do not display
particle-like properties in their precise dynamics. We point out that
because of a UV catastrophe similar to that of black body radiation,
radiative modes suffer from divergences that restrict the set of
finite-average observables; this set is larger for GGEs with higher
conserved charges. We concentrate on the sinh-Gordon model, which only
has radiative modes, and study transport in the domain-wall initial
problem as well as Euler-scale correlations in GGEs. We confirm a
variety of exact GHD predictions, including those coming from
hydrodynamic projection theory, by comparing with Metropolis numerical
evaluations.
Simulador Virtual para Acoso Escolar en Niños y Adolescentes: Un Estudio Piloto en México (Virtual Simulator for School Harassment in Children and Adolescents: A Pilot Study in Mexico)
Authors: Berra Ruiz Enrique
Published: June 2018

El acoso escolar es un problema que tiene consecuencias críticas en las víctimas, que van desde una baja autoestima, depresión y en casos extremos hasta el suicidio. En México el 14% de los estudiantes reporta haber sido víctimas de acoso escolar, recibiendo golpes, apodos, malos tratos de forma intencional y continua por parte de sus compañeros. Ante este panorama, se han creado diversos programas para prevenir y disminuir los efectos del acoso escolar, muchos de estos programas se enfocan en el desarrollo de conductas prosociales, entre ellas la asertividad. El presente estudio tuvo por objetivo evaluar en una muestra de niños y adolescentes una aplicación de realidad virtual de bullying y verificar cambios en las respuestas asertivas de los participantes frente a situaciones simuladas de acoso. Se llevó a cabo un estudio preprueba-posprueba, con un muestreo intencional no probabilístico, en el que se utilizó una aplicación de realidad virtual que recrea tridimensionalmente 12 situaciones de acoso escolar, en donde se puede dar una respuesta agresiva, pasiva o asertiva. Para evaluar el índice de asertividad se empleó la Escala de Asertividad de Rathus. Los datos obtenidos muestran un incremento en el índice de asertividad al finalizar la aplicación, además de un alto porcentaje de respuestas asertivas en comparación con las agresivas y pasivas en las situaciones interactivas de acoso.
El derecho de los pueblos indígenas a la consulta previa, libre e informada, y los principios de progresividad y no regresividad. Estudio de la aplicación práctica de los estándares fijados por el Sistema Interamericano de Derechos Humanos en Colombia
Authors: Sol Bucetto María
Published: June 2018

El derecho a la consulta previa, libre e informada implica que cada vez que se pretenda adoptar medidas que puedan afectar directamente a los pueblos indígenas, el Estado debe consultarlos mediante procedimientos culturalmente adecuados que respeten sus instituciones representativas. En el caso Saramaka vs. Surinam se han delineado los estándares mínimos de protección, y la Corte Constitucional colombiana los ha hecho propios. En líneas generales, Colombia respeta la progresividad de los derechos reconocidos a los pueblos indígenas, pero aún existen manifestaciones regresivas que atentan contra la implementación y exigibilidad del derecho fundamental a la consulta.
El debate sobre la última palabra. Reflexiones sobre los controles de constitucionalidad y convencionalidad
Authors: Amaya Jorge Alejandro
Published: June 2018

El autor desarrolla en el trabajo los debates históricos en el constitucionalismo sobre cuál es el órgano más legítimo y adecuado para tener la última palabra en términos constitucionales. Revisa las doctrinas de creación del modelo judicial difuso, de los tribunales constitucionales y del modelo parlamentario y político, aborda la llegada del Sistema Interamericano de Derechos Humanos, a partir de los profundos cambios posteriores a la Segunda Guerra Mundial y el nacimiento y futuro del llamado control de convencionalidad de creación pretoriana por la Corte Interamericana de Derechos Humanos.
Cuba, Constitución y cooperativas. Apuntes sobre un tema polémico
Authors: Fernández Iñíguez Jorge Luis , Gonzales Medina Alexey , Mendoza Pérez Juan Carlos
Published: June 2018

El presente artículo inicia con una breve reseña histórica del movimiento cooperativo cubano, así como el desarrollo legal de las diferentes modalidades de cooperativas existentes en el país, seguida de una propuesta de reforma constitucional encaminada a revertir la regulación deficiente de las cooperativas como formas de propiedad colectiva en el ordenamiento estatal socialista.
Autorización de viaje de menor: análisis al Proyecto de Ley 1872-2017-CR
Authors: Shinno Pereyra Vanessa Elizabeth
Published: June 2018

El presente trabajo centra sus objetivos en realizar un análisis al proyecto de ley 1872-2017-CR que versa en que la madre obtenga automáticamente la autorización judicial para viajar fuera del país acompañada del niño y/o adolescente, cuando el padre del menor alimentista figure en el Registro de Deudores Alimentarios Morosos.
Modelo de autoevaluación de los fundamentos del diseño curricular y el perfil profesional de acuerdo a los estándares para determinar el nivel de calidad de la formación profesional de los estudiantes de la Facultad de Derecho y Ciencia Política de la Universidad Alas Peruanas con fines de acreditación universitaria y su plan de mejoras en el año 2014
Authors: Huamán Sialer Marco Antonio
Published: June 2018

El presente trabajo investiga la calidad de la formación profesional de los estudiantes con un perfil que demanda la sociedad, con un diseño curricular y con fines de acreditación universitaria y su plan de mejoras. La investigación se aplicó a los estudiantes de la Facultad de Derecho y Ciencia Política de la Universidad Alas Peruanas de Lima. La calidad educativa se sustenta en los principios del aprendizaje activo y colaborativo, caracterizándose por fomentar, al mismo tiempo, la adquisición de conocimientos y actitudes. Asimismo, promueve la investigación para solucionar problemas, el pensamiento crítico, el trabajo en equipo, la comunicación y la tolerancia. En esta investigación, se aplicó una encuesta a estudiantes, docentes y funcionarios a una muestra de 160 alumnos de doceavo ciclo de la Facultad de Derecho y Ciencia Política. Al medir la calidad educativa, se vio que no hay una diferencia significativa entre los estudiantes, docentes y personal administrativo. Los resultados confirmaron la hipótesis del trabajo: el modelo de autoevaluación de los fundamentos del diseño curricular y el perfil profesional evidenció que permite conocer el nivel de calidad del servicio educativo que se da en la Facultad de Derecho y Ciencia Política de la UAP con fines de acreditación.
Explorando el potencial de los dispositivos electrónicos y de las redes sociales en el proceso enseñanza- aprendizaje de los universitarios
Authors: Altuzarra Artola Amaia , Galvez Catalina , Gonzalez Ana
Published: June 2018

Este trabajo examina, desde la perspectiva del alumnado, la contribución del uso de dispositivos electrónicos y redes sociales (en combinación con métodos tradicionales de enseñanza) en su proceso y resultados de aprendizaje. La metodología utilizada incluye técnicas estadísticas multivariantes y análisis clúster. Los resultados muestran que la penetración de la tecnología móvil y de las redes sociales en el entorno universitario se caracteriza por una amplia diversidad, tanto en el uso de redes sociales como en la percepción que el alumnado tiene sobre la contribución de las herramientas de la web 2.0 en su proceso de aprendizaje.
Detección de patrones en competencias digitales manifestadas por estudiantes universitarios
Authors: Islas Torres Claudia , Franco Casillas Sergio
Published: June 2018

El uso de tecnologías de la información y comunicación por estudiantes universitarios les genera competencias que implican en acciones para su aprendizaje. Bajo esta premisa, el objetivo del artículo es dar a conocer, con técnicas de análisis de minería de datos, los patrones identificados respecto a las competencias digitales procedimentales que manifiestan los estudiantes universitarios. La investigación fue cuantitativa. El conjunto de datos minable se obtuvo de un cuestionario validado con alpha de cronbach de 0.82 (bueno). Los resultados indican que tres clúster describen de forma óptima la relación entre competencias digitales y el desempeño académico que puede ser bueno o excelente. Para algunos estudiantes las tecnologías son incidentes en su desempeño académico, mientras que para otros no lo son.
La integración de las TIC en los centros universitarios: la visión de los directivos
Authors: Rodríguez Correa Marisol
Published: June 2018

El papel de los líderes universitarios para la incorporación de las TIC en sus Centros no resultará sencillo de ejercer, ya que los mismos se deben enfrentar a cambios significativos a nivel científico, económico y tecnológico que determinarán en gran medida el éxito de esta integración. El objetivo de esta investigación fue describir los procesos de incorporación de las TIC en el contexto de la Universidade da Coruña. Los participantes del estudio fueron los directivos de todos los Centros de la UDC. Se presenta una investigación cualitativa, siendo las técnicas de recogida de datos empleadas la entrevista y el análisis de documentos. Los directivos consultados han impulsado la incorporación de las TIC en todos los centros de la UDC, sin embargo coinciden en que han existido algunos problemas para la integración de estas herramientas en sus Centros, entre los cuales se encuentran la insuficiencia de equipos, la ausencia de un personal especializado que pueda solucionar los problemas técnicos, y falta de formación en el profesorado en el uso de TIC. Los directivos de la UDC se comprometen en continuar asumiendo las responsabilidades que les compete para lograr una docencia de calidad a través del uso intensivo de las TIC.
Explorando el potencial de los dispositivos electrónicos y de las redes sociales en el proceso enseñanza- aprendizaje de los universitarios
Authors: Altuzarra Artola Amaia , Gálvez Catalina , Gonzalez Ana
Published: June 2018

Este trabajo examina el uso de los dispositivos electrónicos y las redes sociales en los estudiantes universitarios y analiza, desde la perspectiva del alumnado, la contribución de dichas herramientas (en combinación con los métodos tradicionales de enseñanza) en el proceso y resultado de su aprendizaje. La metodología incluye técnicas estadísticas multivariantes y análisis clúster. Los resultados permiten elaborar una tipología del alumnado en relación con los usos y los beneficios de los aparatos electrónicos y de las redes sociales en el proceso de aprendizaje. Los resultados muestran que la penetración de la tecnología móvil y de las redes sociales en el entorno universitario que hemos estudiado se caracteriza por una amplia diversidad, tanto por el diferente uso que el alumnado hace de las redes sociales como por la distinta a percepción que tiene sobre la contribución de las herramientas de la web 2.0 en su proceso de aprendizaje.
SANTIAGO, R.; DÍEZ, A. & ANDÍA, L.A. (2017) Flipped Classroom: 33 experiencias que ponen patas arriba el aprendizaje. Barcelona: UOC, 226 pp.
Authors: Montaner Villalba Salvador
Published: June 2018

Se trata de una reseña del libro:SANTIAGO, R.; DÍEZ, A. & ANDÍA, L.A. (2017) Flipped Classroom: 33 experiencias que ponen patas arriba el aprendizaje. Barcelona: UOC, 226 pp.
Passive fault-tolerant control for vehicle active suspension system based on H2/H∞ approach
Authors: Zhang Li Ping , Gong Dong Liang
Published: June 2018

In this paper, a robust passive fault-tolerant control (RPFTC) strategy based on H2/H∞ approach and an integral sliding mode passive fault tolerant control (ISMPFTC) strategy based on H2/H∞ approach for vehicle active suspension are presented with considering model uncertainties, loss of actuator effectiveness and time-domain hard constraints of the suspension system. H∞ performance index less than γ and H2 performance index is minimized as the design objective, avoid choosing weighting coefficient. The half-car model is taken as an example, the robust passive fault-tolerant controller and the integral sliding mode passive fault tolerant control law is designed respectively. Three different fault modes are selected. And then compare and analyze the control effect of vertical acceleration of the vehicle body and pitch angular acceleration of passive suspension control, robust passive fault tolerant control and integral sliding mode passive fault tolerant control to verify the feasibility and effectiveness of passive fault tolerant control algorithm of active suspension. The studies we have performed indicated that the passive fault tolerant control strategy of the active suspension can improve the ride comfort of the suspension system.
The correlation analysis of gear tooth broken-pitting compound fault and single fault based on Laplacian Eigenmaps
Authors: Wang Guangbin , He Yinghang , Du Xiaoyang , Li Long , Deng Wenhui
Published: June 2018

Gear break and pitting are two common faults in transmission system, when these two faults coexist and form a compound fault, the damage speed and frequency of gear transmission system will be greatly increased. Taking the gear fault-pitting compound fault as the object, the dynamic model of gear single fault and compound fault is established, and the vibration characteristics of gear single fault, pitting single fault and broken tooth-pitting compound fault signal are analyzed. The characteristic manifolds of the intrinsic dimension space in the case of gear single failure and compound fault are extracted by using the Laplacian Eigenmaps algorithm, the evolution trend of single fault and compound fault in the overlapping region of the feature space, the degree of correlation and the curvature of the fault circle core are analyzed and obtained. The study found that with the deepening of the fault severity, the overlapping area of fault circle between compound fault and single fault become smaller gradually, that is, the degree of correlation become weakened, tooth broken single fault and compound fault can be identified in mid-late stage of fault, while the pitting single fault and compound fault are in the late stage. The experimental results of gearbox compound fault correlation show that the conclusion of the simulation analysis is correct and effective, which provides a new idea for the diagnosis of mechanical complex faults.
Bifurcation and chaos analysis of a gear pair system with multi-clearance
Authors: Xia Yan , Wan Yi , Liang Xichang
Published: June 2018

In order to investigate the characteristics of bifurcation and chaos for a spur gear pair system, a three-degree-of-freedom nonlinear dynamic model with multi-clearance is established, in which time-varying meshing stiffness, static transmission error, gear backlash and bearing clearance are comprehensively taken into account. Through introducing a relative generalized coordinate, the dimensionless dynamic equations of motion of system are derived and then solved by using Runge-Kutta numerical integration method. And the bifurcation and chaos features of gear pair are systematically analyzed and discussed from bifurcation diagrams with meshing frequency, gear backlash, bearing clearance and damping ratio as control parameters under different loaded conditions. Meantime, with the help of Poincaré map and phase diagram, the motion forms of system are accurately identified. The analysis results reveal that as meshing frequency increases, the system shows various types of motion states which contain periodic motion, quasi-periodic motion and chaotic motion. Similarly, with the increasing of gear backlash, the system undergoes complex motion forms under lightly loaded condition, whereas it is only in period-one motion state under heavily loaded condition. Furthermore, the system motion state is gradually switched from chaos to periodic or quasi-periodic motion under lightly loaded condition when bearing clearance changes. However, under heavily loaded condition, the bearing clearance has a weak effect on dynamic behavior of the gear system. Apparently, the system tends to be more stable under heavily loaded condition than that under lightly loaded condition. In addition, the growing damping ratio can effectively suppress the chaotic behavior and control nonlinear vibration of gear system. The research results provide useful guidance for dynamic design and vibration control for gear set.
Numerical analysis on longitudinal seismic responses of high-speed railway bridges isolated by friction pendulum bearings
Authors: Yu Zhiwu , Li Haiyan , Wei Biao , Jiang Lizhong , Mao Jianfeng
Published: June 2018

As to analyze the effects of friction pendulum bearings (FPB) on the responses of simply supported bridges on a high-speed railway under longitudinal earthquakes, a spatially integrated track-bridge model with a CRTS II slab ballastless track and FPB was established by using the OpenSEES software. The seismic responses under different ground motions were calculated and compared with those using common spherical steel bearings. The comparison results show that the combination of FPB and the CRTS II slab ballastless track is more reasonable. Namely, using FPB can effectively protect the bridge and track structures. Moreover, the rails, fasteners, CA layer and piers are perfectly protected by multi-layer isolation mechanics, induced by FPB and sliding layer, even under strong earthquakes. Finally, 0.05 is identified to be the best value for the friction coefficient of FPB under longitudinal earthquakes.
Feature extraction of the weak periodic signal of rolling element bearing’ early fault based on shift invariant sparse coding
Authors: Shang Baoping , Guo Zhiqiang , Wang Hongchao
Published: June 2018

When fault such as pit failure arises in the rolling element bearing the vibration signal of which will take on periodic characteristics, and the abrupt failure of rotating machinery can be avoided effectively if the weak periodic characteristics of the early fault stage is extracted timely. However, the periodic characteristics of bearing’ early weak fault is hard to be extracted usually and the reasons can be boiled to as following: Firstly, the weak periodic signal of rolling element bearing’ early fault stage is buried by the strong background noise. Secondly, the weak fault cannot show the complete shock attenuation impulsive characteristic due to its weak energy, so the traditional wavelet transform would not work effectively if a proper wavelet basis function fitting for analyzing the impulsive characteristics is not selected. To solve the above two problems, a feature extraction method of the weak periodic signal of rolling element bearing’ early fault based on Shift Invariant Sparse Coding (SISC) originating from sparse representation is proposed in the paper. To capture the underlying structure of machinery fault signal, SICS provides an effective basis functions learning scheme by solving the flowing two convex optimization problems iteratively: 1) L1-regularized least squares problem. 2) L2-constrained least squares problem. The fault feature can be probably contained and extracted if optimal latent component is filtered among these basis functions. The feasibility and effectiveness of the proposed method are verified through the corresponding simulation and experiment.
Performance improvement of a sigma-delta modulator using fractional-order disturbance observer
Authors: Xu Chi , Jin Yu , Na Jingtong
Published: June 2018

This paper proposes a novel design of a high order closed-loop Sigma-Delta modulator using a fractional-order disturbance observer, which can reduce the influence of possible dispersions of the sensing element and offset the effect of the external disturbance. The proof mass can maintain near its position of equilibrium by using the proposed fractional-order disturbance observer, which ensures a better control of the proof mass displacement, and the small proof mass displacement can enhance the sensor resolution and the overall system performance. Fractional-order disturbance observer possesses stronger robust stability of interference elimination, because the introduction of fractional calculus makes Q-filter expanding from an integer domain to a real-number domain. Experimental results from the proposed architecture shows an increase of more than 2X improved in signal quantization noise ratio compared to the pure high-order closed-loop Sigma-Delta modulator, and also the proposed Sigma-Delta modulator with a fractional-order disturbance observer improves the performance of disturbance attenuation and system robustness.
Research on unbalance response characteristics of gas turbine blade-disk rotor system
Authors: Yang Wenjun , Liang Mingxuan , Wang Lei , Yuan Huiqun
Published: June 2018

Taken a gas turbine rotor system as the research object, this paper has established dynamical model based on transfer matrix method. Natural vibration characteristics are solved with different transfer matrix models, and are compared with that gotten by finite element method. Then unbalanced response is researched. The effects of eccentric factors are discussed on unbalanced vibration. Furthermore, the application is explored in rotor dynamic balancing. The results show there is much minor deviation between natural frequencies of transfer matrix method and finite element method, and vibration modes of two methods coincide quite well. It illustrates the model established in the research is reliable. For input side of blade-disk rotor, unbalanced vibration occurs more easily in lower frequency. While unbalanced vibration of output side is more sensitive at higher frequency. With the increase of eccentric mass, unbalanced vibration of blade-disk rotor is more heavily, and the displacement rotates around a fixed node. The application of opposite unbalanced mass can decrease the amplitude of vibration in lower frequency. Hence, it can be used to achieve the balance of rotor dynamics. This research provides the theoretical basis and technological fundament for gas turbine rotor dynamics design.
Sensitivity of beam-column element stiffness matrix to the crack parameters
Authors: Dolatabadi Peiman Davari , Khanlari Karen , Ashtiany Mohsen Ghafory , Hosseini Mahmood
Published: June 2018

In this article, a new cracked beam-column element stiffness matrix is proposed through static condensation method. Seven dimensionless coefficients are introduced and applied for a sensitivity analysis in different damage scenarios. The accuracy of this proposed stiffness matrix is verified, and compared to the other available methods. The variation of each stiffness component due to the conversion of crack parameters is assessed and shown in different graphs. This study reveals that cracking has a maximum stiffness reduction of 30 % in the beam-column elements with rectangular cross sections and the damaged elements remain stable until the crack depth is below 80 % of the section depth.
Multi-mode soft switching control for variable pitch of wind turbines based on T-S fuzzy weighted
Authors: Hou Tao , Zhang Qiang , Niu Hongxia
Published: June 2018

Variable pitch control is an effective way to ensure the constant power operation of the wind turbines over rated wind speed. The pitch actuator acts frequently with larger amplitude and the increasing mechanical fatigue load of parts of wind turbines affects the output quality of generator and damages the service life of wind turbines. The existing switching control methods only switch at a certain threshold, which can result in switch oscillation. In order to deal with these problems, a multi-mode soft switching variable pitch control strategy was put forward based on Takagi-Sugeno (T-S) fuzzy weighted to accomplish soft switch, which combined intelligent control with classical control. The T-S fuzzy inference was carried out according to the error and its change rate, which was used to smooth the modal outputs of fuzzy control, radial basis function neuron network proportion integration differentiation (RBFNN PID) control and proportion integration (PI) control. This method takes the advantages of the three controllers into consideration. A multi-mode soft switch control model for variable pitch of permanent magnet direct drive wind turbines was built in the paper. The simulation results show that this method has the advantages of three control modes, switch oscillation is overcome. The integrated control performance is superior to the others, which can not only stabilize the output power of wind turbines but also reduce the fatigue load.
Dynamics analysis on barrel considering the temporal and spatial distribution of propellant gas by numerical simulation
Authors: Yu Qingbo , Yang Guolai , Sun Quanzhao
Published: June 2018

In terms of the excitation of barrel vibration on the motion modality of projectile during interior ballistic period, a finite element model considering the mutual coupling between projectile and barrel was established to study the dynamics. In consideration of the effects of propellant gas on dynamics response based on vibration theory, the real loading condition of propellant gas acting on barrel was defined by user-defined VDLOAD subroutine, which solved the problem of inaccurate loading and even the failure of loading of gases pressure in previous simulations. Simultaneously, the loading boundary condition was directed by the coupling process of powder combustion and projectile motion, modeled by the user-defined VUAMP subroutine. The dynamics responses of barrel with and without the radial effect of gas pressure were obtained. Moreover, with the aid of realization of radial loading of barrel, the influence of the deviation of mass center of barrel on its dynamics response was also investigated. The obtained results showed that the radial effect of gas pressure causes more violent dynamics responses and plays a non-negligible role in simulating artillery firing process. The dynamics response of barrel is sensitive to the deviation of mass center and the response increases with the increasing value of deviation.
Application of air disc brake in mining electric locomotive
Authors: Li Zhaosong , Liang Bin , Xu Jilei
Published: June 2018

In order to shorten the braking distance of mining electric locomotive and improve the safety of underground transportation effectively. The existing handwheel-brake shoe brake device is analyzed. In view of its shortcomings, an air disc brake device and a tread sweeper are put forward. Through calculation verification and simulation analysis, it is found that the device can shorten the braking distance of mining electric locomotive effectively and it can meet the requirements of The Specification of Narrow Tramroad Gauge Electric Locomotive for Mine. It has a certain degree of application value and practical significance.
Гендерные исследования в социальной психологии: границы поля
Authors: Воронцов Дмитрий Владимирович
Published: June 2018

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Дидактические технологии инициации рефлексивных способностей учащихся
Authors: Белова Елена Владимировна
Published: June 2018

The particular block of problems of reorientation of our system of the education Is re­lated to the motivational and dynamic components of this system, to rethinking of the existing and the creation of the new methods and technologies of the education. Reflex­ive technologies, as the special group of pedagogical technologies fulfill the function of revealing, “context crystallinity" in connection to the contents, which are grasped by the pupil.
Психологические характеристики компетентностей специа-листов научно-исследовательских подразделений организа-ций оборонно-промышленного комплекса с разным стажем работы
Authors: Скрипкина Татьяна Петровна , Туливетров Сергей Николаевич
Published: June 2018

The article deals the psychological characteristics of the competences of specialists at research departments of the military-industrial complex with a different work experience. The main idea of the study was to compare the level of development of competences of specialists with different work experience.

Analysis of the data allows to predict the success of the process of professional devel­opment of specialists in the research departments of military-industrial complex.
Уровень сформированности школьных навыков и эмоционально-волевые качества у детей с малой мозговой дисфункцией
Authors: Серов Петр Николаевич
Published: June 2018

In this article the author considers the question about the age changes in school skills and emotional and will sphere of the boys of 7-16 years old. It is assumed, that the difficul­ties in the education of the examined children remain with the age due to the disturbance of regulative mental mechanisms, leading to the development of hyperactivity.
Влияние межличностных отношений студентов вуза на развитие их карьерных устремлений
Authors: Канаматова Аина Каплановна
Published: June 2018

The article analyses the problem of development of students' career plans. There are results of the empirical research which studies the influence of the interpersonal relations between students upon development of their career plans, they describe in brief the pro­gram proposed for the development of the interpersonal relations, which has the aim to extend the students' representations about psychological aspects of building and sup­porting interpersonal communications.
Психолого-педагогические характеристики ценностно-смысловых барьеров старшеклассников
Authors: Бакулин Андрей Валентинович
Published: June 2018

The article considers the main types of the difficulties in the process of the context forming of the senior schoolchildren, there is a definition of the difficulties in the sense forming as value and context barrier in the educational process, such problems as sense actualization and verbalization are described as the barrier of the self-relation, the barrier of the value and context extrapolation, barrier of the depth of the personal attitude.
Динамика удовлетворенности жизнью в результате фотовизуализации жизненных событий
Authors: Лакосина Нелли Владимировна
Published: June 2018

Principal theoretical and methodological aspects of traced research are presented In this article. The research has been dedicated to investigation of dynamic changes in person's attitude towards life as a result of photovisualization of life events. The research program and methodological tools are presented. The first results are cited, the data of changes in life satisfaction in the course of photovisualization's program are presented.
Мотивационные характеристики карьеризма
Authors: Вилкова Лилия Михайловна
Published: June 2018

Статья посвящена рассмотрению мотивационных характеристик карьериз­ма, входящих в одну из групп личностных детерминант (направленность) данно­го феномена. Предлагаются оригинальные эмпирические показатели карьериз­ма для определения его выраженности у конкретного субъекта деятельности. Анализируются результаты проведенного эмпирического исследования, уста­навливаются специфические мотивационные характеристики респондентов с высокой выраженностью карьеризма.
Характер взаимосвязи особенностей Я-концепций и притязаний студентов-психологов
Authors: Шумихина Анна Владимировна
Published: June 2018

In the article there is given the concept definition “aspiration" developed by the author; the complex of the steady characteristics of aspiration of personality is described. The results of empirical study of direction, force and sign of the interrelations between the complex of the special features of self-concept and aspiration of student-psychologists are given.
Анализ эмоционального реагирования несовершеннолетних потерпевших в ситуациях пролонгированной инцестуальной связи
Authors: Васкэ Екатерина Викторовна
Published: June 2018

In clause are considered questions, connected with completion sexual violences In family in respect of minor. It is conducted analysis to transformations of the emotional reaction minor aggrieved at situations durable sexual violence in family under different level of the understanding by victim occurring event.
О стилях взаимодействия авторитетного руководителя
Authors: Антонян Элина Юрьевна
Published: June 2018

In article representations of workers of various organizational cultures about styles of interaction of the authoritative head are considered. Objective and subjective character of «authority» is shown.

Article can be of interest for experts in the field of social psychology, psychology of management and organizational management. Research can become a basis for work­ing out trenings directed on increase of efficiency of manager's competence.