bluuebunny/crossref_metadata_2025_split huggingface dataset:
State of the art of metal oxide memristor devices
Authors: Mohammad Baker , Jaoude Maguy Abi , Kumar Vikas , Al Homouz Dirar Mohammad , Nahla Heba Abu , Al-Qutayri Mahmoud , Christoforou Nicolas 
Published: December 2015

AbstractMemristors are one of the emerging technologies that can potentially replace state-of-the-art integrated electronic devices for advanced computing and digital and analog circuit applications including neuromorphic networks. Over the past few years, research and development mostly focused on revolutionizing the metal oxide materials, which are used as core components of the popular metal-insulator-metal memristors owing to their highly recognized resistive switching behavior. This paper outlines the recent advancements and characteristics of such memristive devices, with a special focus on (i) their established resistive switching mechanisms and (ii) the key challenges associated with their fabrication processes including the impeding criteria of material adaptation for the electrode, capping, and insulator component layers. Potential applications and an outlook into future development of metal oxide memristive devices are also outlined.
Is Bigger Better for Egyptian Banks? An Efficiency Analysis of the Egyptian Banks during a Period of Reform 2000–2006
Authors: Farrag Noha , Lang Günter 
Published: December 2015

AbstractThis study contributes to the banking efficiency literature by using a three input–five output stochastic frontier translog cost function specification to investigate cost efficiency, scale economies, and technological progress in the Egyptian banking sector. The study analyzes the efficiency of Egyptian banks in the period 2000–2006 which witnessed major regulatory and structural changes. The analysis is based on a panel data of 34 commercial banks representing about 75% of the banking sector in Egypt. The results show that the banks suffer significantly from internal X-inefficiency with an average cost reduction potential of 12%. Increasing economies of scale are found to exist up to a bank size of about EGP30 bn, implying that all but the four largest banks in Egypt could reduce their average costs by growth. Surprisingly, Egyptian commercial banks did not benefit from technological change; instead they faced a negative dynamics of the cost frontier. Further regression analysis conducted to explain the different efficiency levels of the banks revealed a positive impact of size, growth, and merger activities on efficiency, which implies bigger is better for Egyptian Banks.
SNPTracker: A Swift Tool for Comprehensive Tracking and Unifying dbSNP rs IDs and Genomic Coordinates of Massive Sequence Variants
Authors: Deng Jia-En , Sham Pak C , Li Miao-Xin 
Published: December 2015

AbstractThe reference single nucleotide polymorphism (rs) ID in dbSNP (http://www.ncbi.nlm.nih.gov/SNP/) is a key resource identifier, which is widely used in human genetics and genomics studies. However, its application is often complicated by the varied IDs of different versions. Here, we developed a user-friendly tool, SNPTracker, for comprehensively tracking and unifying the rs IDs and genomic coordinates of massive sequence variants at a time. It worked perfectly, and had much higher accuracy and capacity than two alternative utilities in our proof-of-principle examples. SNPTracker will greatly facilitate genetic data exchange and integration in the postgenome-wide association study era.
Gene Expression and Chromatin Modifications Associated with Maize Centromeres
Authors: Zhao Hainan , Zhu Xiaobiao , Wang Kai , Gent Jonathan I , Zhang Wenli , Dawe R Kelly , Jiang Jiming 
Published: December 2015

Abstract
Centromeres are defined by the presence of CENH3, a variant of histone H3. Centromeres in most plant species contain exclusively highly repetitive DNA sequences, which has hindered research on structure and function of centromeric chromatin. Several maize centromeres have been nearly completely sequenced, providing a sequence-based platform for genomic and epigenomic research of plant centromeres. Here we report a high resolution map of CENH3 nucleosomes in the maize genome. Although CENH3 nucleosomes are spaced ∼190 bp on average, CENH3 nucleosomes that occupied CentC, a 156-bp centromeric satellite repeat, showed clear positioning aligning with CentC monomers. Maize centromeres contain alternating CENH3-enriched and CENH3-depleted subdomains, which account for 87% and 13% of the centromeres, respectively. A number of annotated genes were identified in the centromeres, including 11 active genes that were located exclusively in CENH3-depleted subdomains. The euchromatic histone modification marks, including H3K4me3, H3K36me3 and H3K9ac, detected in maize centromeres were associated mainly with the active genes. Interestingly, maize centromeres also have lower levels of the heterochromatin histone modification mark H3K27me2 relative to pericentromeric regions. We conclude that neither H3K27me2 nor the three euchromatic histone modifications are likely to serve as functionally important epigenetic marks of centromere identity in maize.
Comparative Phylogenomics of Pathogenic and Nonpathogenic Species
Authors: Whiston Emily , Taylor John W 
Published: December 2015

AbstractThe Ascomycete Onygenales order embraces a diverse group of mammalian pathogens, including the yeast-forming dimorphic fungal pathogens Histoplasma capsulatum, Paracoccidioides spp. and Blastomyces dermatitidis, the dermatophytes Microsporum spp. and Trichopyton spp., the spherule-forming dimorphic fungal pathogens in the genus Coccidioides, and many nonpathogens. Although genomes for all of the aforementioned pathogenic species are available, only one nonpathogen had been sequenced. Here, we enhance comparative phylogenomics in Onygenales by adding genomes for Amauroascus mutatus, Amauroascus niger, Byssoonygena ceratinophila, and Chrysosporium queenslandicum—four nonpathogenic Onygenales species, all of which are more closely related to Coccidioides spp. than any other known Onygenales species. Phylogenomic detection of gene family expansion and contraction can provide clues to fungal function but is sensitive to taxon sampling. By adding additional nonpathogens, we show that LysM domain-containing proteins, previously thought to be expanding in some Onygenales, are contracting in the Coccidioides-Uncinocarpus clade, as are the self-nonself recognition Het loci. The denser genome sampling presented here highlights nearly 800 genes unique to Coccidiodes, which have significantly fewer known protein domains and show increased expression in the endosporulating spherule, the parasitic phase unique to Coccidioides spp. These genomes provide insight to gene family expansion/contraction and patterns of individual gene gain/loss in this diverse order—both major drivers of evolutionary change. Our results suggest that gene family expansion/contraction can lead to adaptive radiations that create taxonomic orders, while individual gene gain/loss likely plays a more significant role in branch-specific phenotypic changes that lead to adaptation for species or genera.
MASLAHAT MEMELIHARA HARTA DALAM SISTEM EKONOMI ISLAM
Authors: Iswandi Andi 
Published: December 2015

Abstract: The Benefits of Maintaining Property in Islamic Economic System. property in the Islamic economic system has an important position. Related in business activities of economic and ritual worship, in Sharia maqoshid, preserve or maintain the property is one of important point. It is the intent and purpose of God in order to give the benefit of the people to pray to serve as guidelines in the business and dealing with. The benefit in preserving and maintaining the property is an economic system that has been set by Allah swt. Economic system does not belong by any religion other than Islam. This system provides guidance on how humans earn their living, consuming materials, conduct transactions, distribute assets, and conduct religious activities like charity, donation and alms. Keywords: Benefits, Maintaining Property, Sharia Maqoshid, Islamic Economic System Abstrak: Maslahat Memelihara Harta Dalam Sistem Ekonomi Islam. Harta di dalam sistem ekonomi Islam memiliki kedudukan yang penting. Dalam kaitannya dengan kegiatan bisnis ekonomi dan ritual ibadah, harta diperhatikan betul, sehingga di dalam maqoshid syariah menjadikannya salah satu point penting yaitu, memelihara atau menjaga harta. Hal ini adalah maksud dan tujuan Tuhan dalam rangka memberikan kemaslahatan kepada manusia untuk kiranya dijadikan sebagai pedoman di dalam berbisnis dan bermuamalah. Kemaslahatan di dalam memelihara ataupun menjaga harta merupakan sistem ekonomi yang diberikan Allah Swt., yaitu sistem ekonomi yang tidak dimiliki oleh agama lain selain agama Islam. Sistem inilah yang memberikan pedoman bagaimana manusia mencari nafkah, mengkonsumsi materi, melakukan transaksi jual-beli, mendistribusikan harta, dan melakukan kegiatan ibadah seperti zakat, infak dan sedekah. Kata Kunci: maslahat, memelihara harta, maqoshid syariah, sistem ekonomi IslamDOI:10.15408/sjsbs.v1i1.1522
The Dynamic Hypermedia Helps (DHH) in the classroom/Las Ayudas Hipermediales Dinámicas (AHD) en los Proyectos de Aula
Authors: Sánchez Bedoya Héctor Gerardo , Rojas García Jorge Luis , Amador Montaño José Francisco , Duque Cuesta Eduardo Augusto 
Published: December 2015

Las Ayudas Hipermediales Dinámicas (AHD) en los Proyectos de Aula, es una investigación que tuvo como objetivo caracterizar las prácticas de enseñanza y aprendizaje de los maestros y maestras de las instituciones educativas beneficiadas por Computadores para Educar 2012-2014 al implementar proyectos de aula en TIC; una vez que se ha podido identificar que a pesar de que las instituciones educativas reciben dotación de equipos computacionales, las prácticas de los maestros no reflejan mejoras en los procesos de aula. Es una investigación cualitativa, de corte interpretativo; donde se trabaja con un diseño de estudio de caso múltiple, en sedes seleccionadas de los departamentos de Caldas, Quindío, Norte del Valle y Risaralda. El artículo se encuentra estructurado en los siguientes apartes: Fundamento pedagógico de una AHD, en la interactividad está el cambio en los procesos de aula, el Aprendizaje basado en proyectos, metodología de la investigación, discusión enmarcada en: objetivos, pregunta, secuencia didáctica y la evaluación con AHD. Para finalizar, aparecen las conclusiones, de las cuales se resaltan: Las AHD se sustentan en acciones de aula con TIC las cuales posibilitan el desarrollo y fortalecimiento de los mecanismos de influencia educativa. Las relaciones entre los tres elementos del triángulo didáctico: maestro, estudiante y saber, se ven favorecidas por el uso pedagógico de las AHD. La organización de la actividad conjunta mediada con AHD, está prevista en el diseño tecnopedagógico, la cual se enfatiza en la construcción de nuevos conocimientos a partir de los intercambios colaborativos entre estudiantes y maestro.
Estrutura factorial da versão portuguesa do Job Diagnostic Survey (JDS) : Um estudo confirmatório de validação do instrumento
Authors: Almeida Helena , Faísca Luís , Jesus Saúl Neves 
Published: December 2015

O objectivo deste trabalho é analisar a estrutura factorial do Job Diagnostic Survey, construído a partir do Modelo das Características do Trabalho (Hackman & Oldham, 1975, 1980), para avaliar cinco dimensões características do trabalho: variedade, identidade, significado, autonomia e feedback. Utilizou-se uma amostra heterogénea de 552 trabalhadores pertencentes a diversos grupos profissionais. Avaliaram-se nove modelos alternativos sobre a estrutura do instrumento, recorrendo à análise factorial confirmatória efectuada pelo programa Amos, versão 6.0. Os resultados obtidos mostram que o modelo de Hackman e Oldham, ao qual se adicionou um factor de Método que integra os itens negativos, é o modelo que apresenta um melhor ajustamento aos dados. Os itens associados a estas dimensões definem sub-escalas com níveis de fiabilidade razoáveis, o que permite considerá-las operacionalizações psicometricamente aptas para avaliar as dimensões características do trabalho definidas por Hackman e Oldham.DOI: http://dx.doi.org/10.17575/rpsicol.v23i1.318
O envolvimento do pai no processo desenvolvimental dos filhos: Uma abordagem intergeracional
Authors: Lima Albino , Serôdio Rui , Cruz Orlanda 
Published: December 2015

Neste estudo exploramos a relação entre as formas de envolvimento do pai contemporâneo no processo desenvolvimental dos filhos em idade escolar e a representação que o pai faz acerca do envolvimento do seu próprio pai, ao longo da infância e adolescência. Considerámos duas formas de envolvimento paterno: tempo despendido em Interacção e em Acessibilidade, avaliadas a partir do Guião de Entrevista Interacção e Acessibilidade. Foi ainda utilizada a escala ENVOLVE que se reporta à representação do pai acerca do envolvimento do seu próprio pai. Participaram 189 pais e 407 crianças (8-10 anos). Os resultados, entre outros aspectos, mostram que, quanto mais positiva é a representação do envolvimento acerca do seu próprio pai, mais o pai interage com a criança. Isto verifica-se, particularmente, na representação que o adulto tem do envolvimento do seu pai nas dimensões Apoio Emocional e Estimulação e Partilha de Tarefas com a mãe. Discutimos estes resultados em termos das continuidades e descontinuidades intergeracionais, enquanto determinantes do envolvimento paterno. DOI: http://dx.doi.org/10.17575/rpsicol.v23i2.330
Respostas emocionais (verbais e psicofisiológicas) perante imagens de estímulos alimentares
Authors: Esteves Francisco , Arriaga Patrícia , Carneiro Paula , Flykt Anders 
Published: December 2015

O processamento emocional de imagens com estímulos alimentares foi estudado em quatro experiências, comparando participantes que revelaram ter atitudes pouco saudáveis face à alimentação, dieta e forma do corpo, com grupos de controlo. Todos os participantes eram do sexo feminino e as respostas a imagens de alimentos de baixo e elevado teor calórico foram comparadas às respostas a outros estímulos emocionais. Nas primeiras três experiências foram medidas as respostas verbais e autonómicas; a Experiência 4 foi um estudo de condicionamento clássico. Nas experiências 2-4 foi usado um procedimento backward masking de apresentação de imagens com o intuito de observar respostas automáticas, não-conscientes. Os resultados mostraram, no geral, que as imagens de alimentos foram processadas de modo semelhante a outro material emocional, a nível verbal e fisiológico. Embora alguns resultados indicassem diferenças entre grupos, o padrão geral foi o de que as participantes com maiores preocupações com a alimentação e dieta mostraram maior reactividade a estímulos alimentares.DOI: http://dx.doi.org/10.17575/rpsicol.v24i2.308
O excesso de trabalho mata ou dá prazer? Uma exploração dos antecedentes e consequentes do workaholismo
Authors: Gomes Jorge F. S. , Soares Patrícia 
Published: December 2015

O objectivo deste trabalho é examinar o workaholismo em termos dos seus antecedentes e consequentes. A problemática tem sido pouco tratada na literatura especializada, pelo que a investigação aproveitou esta lacuna para realizar uma análise exploratória de alguns temas associados ao workaholismo. Utilizou­?se o Work Addiction Risk Test (Robinson, 1998) para identificar os indivíduos que, numa empresa de cosméticos, maiores valores registaram no teste. Posteriormente, esses indivíduos foram entrevistados, a fim de explorar e conhecer as suas perspectivas relativamente aos conteúdos sob observação. Os resultados encontrados permitem tecer comparações entre o que é proposto na literatura e a realidade prática. O artigo discute a noção de workaholismo, as suas causas, os seus efeitos sobre as pessoas, e a perspectiva dos sujeitos sobre o tópico. Contrastam­?se ainda os resultados da fase quantitativa com a fase qualitativa da investigação.
DOI: http://dx.doi.org/10.17575/rpsicol.v25i1.279
Avaliação da escala de auto-estima de Rosenberg mediante o modelo de Rasch
Authors: Quintão Sónia , Prieto Gerardo , Delgado Ana R. 
Published: December 2015

O objectivo deste estudo consistiu em avaliar as características psicométricas da versão portuguesa da escala de Rosenberg mediante o modelo de Escalas de Classificação, uma extensão para itens politómicos do modelo de Rasch. Foi recolhida uma amostra de 510 estudantes universitários, 223 do sexo masculino e 287 do sexo feminino, com uma média etária de 21.7 anos (DP = 3.80). As análises indicam que o ajuste dos dados ao modelo é aceitável. Conclui­?se que tanto o formato de resposta da versão portuguesa (tipo Likert com quatro categorias) como a fiabilidade dos dados resultam adequados. No entanto, de um ponto de vista substantivo e, em concordância com estudos prévios, constata­?se que a escala não permite distinguir as pessoas com níveis médio e alto de auto­?estima.
DOI: http://dx.doi.org/10.17575/rpsicol.v25i2.289
¿Es diferente la implicación en los deberes escolares según el rendimiento académico de los estudiantes? || Is the homework involvement different at different levels of academic achievement of students?
Authors: Valle Antonio , Regueiro Bibiana , Rodríguez Susana , Piñeiro Isabel , Ferradás Mar , Freire Carlos 
Published: December 2015

El presente trabajo pretende estudiar las posibles diferencias existentes en la cantidad de deberes escolares realizados, en el tiempo dedicado a los mismos y en el aprovechamiento de ese tiempo en función del rendimiento académico de los estudiantes. Los resultados hallados indican que a medida que los niveles de rendimiento de los estudiantes son más altos hay un aumento progresivo de la cantidad de deberes realizados de los prescritos y en el aprovechamiento del tiempo dedicado a los mismos. Sin embargo, aunque no se han hallado diferencias estadísticamente significativas en el tiempo dedicado a los deberes en función de los distintos niveles de rendimiento, la tendencia de los resultados indica que cuando el rendimiento es bajo, el tiempo dedicado a los deberes se incrementa, mientras que cuando el rendimiento es alto, el tiempo disminuye. Por tanto, todo parece indicar que cuanto mayor es el rendimiento mayor es también la cantidad de deberes escolares realizados por los estudiantes y mejor aprovechan ese tiempo que les dedican. Asimismo, esta relación positiva y lineal del rendimiento con la cantidad de deberes y con el aprovechamiento del tiempo no se mantiene con respecto al tiempo dedicado a los deberes.
Mercury (Hg) and Copper (Cu) Analysis of Sea Cucumber Paracaudina australis Crackers from Kenjeran Surabaya using Atomic Absorption Spectroscopy
Authors: Wulandari Alissa Wahidah , Yuliani Dewi , Adi Tri Kustono 
Published: December 2015

<p>Sea cucumber <em>Paracaudina australis</em> crackers is one of the sea foods processed which highly produced and consumed at Kenjeran Surabaya. The research aims to measure concentration of mercury and copper in fried and un-fried sea cucumber <em>Paracaudina australis</em>, Crackers collected from three supplier at Kenjeran Surabaya Using Atomic Absorption S Spectroscopy (AAS). The six sample were oxidized using oxidator agents of HNO<sub>3</sub> Pa, H<sub>2</sub>SO<sub>4</sub> Pa, H<sub>2</sub>O<sub>2</sub> Pa (6:2:1) under wet-closed digestion for Hg analysis and wet-opened digestion for Cu analysis. Vapor generation Accessory (VGA-AAS) was applied for measuring Hg concentration while flame AAS for Cu. The research indicated that Hg concentration in sea cucumber crackers were 0,058; 0,0149; 0,108 ppb (un-fried crackers) and 0,078; 0,074; 0,061 ppb (fried crackers) Cu concentration in sea cucumber crackers was measured as 2,037; 3,05; 3,16 ppm (un-fried crackers) and 1,164; 1,589; 1,924 ppm (fried crackers).</p>
Synthesis and Characterization Titanium Dioxide (TiO2) Doped Vanadium(V) Using Solid State Method
Authors: Mustofa Khusnan , Aini Nur , Khalifah Susi Nurul 
Published: December 2015

<p>TiO<sub>2</sub> Anatase activities should be increased from the UV to the visible light photocatalytic activity of TiO<sub>2</sub> to increase anatas. One efforts to optimize TiO<sub>2</sub> anatase activity is doping by using dopant vanadium(V). Synthesis method which is used in this research is a solid reaction method. The steps being taken in this methods include grinding and heating at high temperatures. Dopant concentrations of vanadium(V) which are used in the research was 0.3%, 0.5% and 0.7%. and the characterization used is X-ray diffraction and UV-Vis Diffuse Reflectance Spectroscopy. The result shows that there are a changing of particle size, band gap energy, and absorption of TiO<sub>2</sub> anatas wavelength because of dopan vanadium(V) addition. While TiO<sub>2</sub>’s structure does not change. The crystal sizes of each TiO<sub>2</sub> without doping, V-TiO<sub>2</sub> 0,3%, 0,5% and 0,7% are 53.21 nm, 47.67 nm, 79.65 nm dan 68.99 nm. Band gap energy of each TiO<sub>2</sub> without doping, V-TiO<sub>2</sub> 0,3%, 0,5% dan 0,7% are 3.309 eV, 3.279 eV, 3.270 eV and 3.259 eV. While wavelength absorption of each TiO<sub>2</sub> without doping, V-TiO<sub>2</sub> 0,3%, 0,5% and 0,7% are 374.9 nm, 378.4 nm, 379.5 nm and 380.8 nm.<em> </em></p><p class="BodyAbstract"> </p><strong><em>Keywords</em>:</strong> <em>Synthesis, titanium dioxide, vanadium(V), solid state method</em>
Effectiveness of Bypass-Pigging Solutions in Multiphase-Flow Pipelines With Waxy Crude Oil: Evaluation and Innovative Solution
Authors: Adiyodi Kenoth Sasidharan , Al Matar Ali , Gupta Dharmendra Kumar 
Published: December 2015

Summary
Bypass pigging, compared with conventional pigging, reduces the damaging effects of the pig-generated liquid slug by redistributing gas and liquid in the pipeline. Oil- and gas-production rate, high liquid-slug flow to the slug catcher, high pipeline backpressure, and the capacity of the slug-handling facility at the receiving end are major considerations when designing a bypass-pigging solution. Various operational and engineering challenges are encountered while implementing the commonly known bypass-pigging solutions, and empirical correlations are developed on the basis of experimental results and compared with simulation results. This paper suggests an innovative bypass-pig geometry as a solution. The Thornhill-Craver equation is introduced to calculate the bypass-flow quantity and the pig velocity. A comparison between transient-flow simulation and field results showed some deviations. Empirical correlations are developed for prediction on the basis of experimental results. A new convergent/divergent bypass-pig geometry/profile is developed, followed by simplified model development. Through this innovative design, critical and constant gas-flow rate is achieved at lower pressure ratio through the bypass hole, where the gas enters through a nozzle, stabilizes at the throat, and recovers pressure through a diffuser section. At a predefined inlet pressure and area of cross section of the hole, a properly designed convergent nozzle with throat section will give maximum critical flow rate at the exit by reducing the gas pressure to the critical pressure ratio. However, with help from the diffuser section, the high-velocity energy is converted back into pressure energy, and the line pressure regains up to 90% of the upstream pressure. Adopting such a bypass-hole profile with suitable geometry can ensure required bypass-gas quantity through the pig and can avoid pig stalling and minimize process upset, thus ensuring better pipeline cleaning.