bluuebunny/crossref_metadata_2025_split huggingface dataset:
Effect of Doppler flow meter position on discharge measurement in surcharged manholes
Authors: Yang Haoming , Zhu David Z. , Liu Yanchen 
Published: November 2017

AbstractDetermining the proper installation location of flow meters is important for accurate measurement of discharge in sewer systems. In this study, flow field and flow regimes in two types of manholes under surcharged flow were investigated using a commercial computational fluid dynamics (CFD) code. The error in measuring the flow discharge using a Doppler flow meter (based on the velocity in a Doppler beam) was then estimated. The values of the corrective coefficient were obtained for the Doppler flow meter at different locations under various conditions. Suggestions for selecting installation positions are provided.
LA IDENTIDAD INDÍGENA INTERPRETADA COMO UNA CATEGORÍA DE ANÁLISIS EN LOS ESTUDIOS DE POBLACIÓN
Authors: Choque-Caseres Dante 
Published: November 2017

En Latinoamérica, a partir del reconocimiento de los Pueblos Indígenas, la identificación de brechas o disparidades entre la población Indígena y no Indígena ha emergido como un interés investigativo. Con este fin, capturar la identidad Indígena es clave para conducir algunos análisis. Sin embargo, los contextos sociales donde se (re)produce la identidad de las personas Indígenas han sido alterados significativamente. Dichos cambios son producidos por la asimilación o integración de las comunidades Indígenas a las culturas nacionales dominantes. En este contexto emergen limitaciones en el uso de esta categoría, puesto que la identidad Indígena tendría un componente político y legal relacionado con las necesidades de los gobiernos. Por lo tanto, una reflexión crítica sobre el uso de la identidad Indígena es necesaria en los enfoques epistemológicos y metodológicos de investigación. Este artículo argumenta que la investigación sobre pueblos Indígenas debería evaluar el cómo es incluida la identidad Indígena, porque ésta es socialmente co-producida en la interacción con el Estado y sus instituciones. De esta forma, ella no necesariamente podría constituir una variable explicativa. A través del análisis de discursos acerca de personas y comunidades Indígenas Aymaras que han emergido en la frontera norte de Chile busco exponer las lógicas empleadas para definir la identidad. Se concluye, entonces, que paulatinamente el proceso de auto-identificación emerge en supuestos Indígenas constituidos y/o reforzados por las instituciones, los cuales deberían ser revisados desde un enfoque descolonizado para ser incluidas en investigaciones comparativas.
THE POETRY AND ITS LITERARY RESOURCES AS QUALITATIVE METHODOLOGY
Authors: González-Gutiérrez Luis F 
Published: November 2017

This article describes the main contributions of poetic inquiry as a critical qualitative methodology for the social sciences and health sciences. Are first explored the present research trends associated with the use of poetry as a narrative construction form; in a second, the use of specific exercises is analyzed to identify the potential of narrative aesthetics in the construction of alternative subjectivities as a way of recognizing the voice of the research participants. Finally, there is an academic and reflective discussion about the need to use this methodology in the different universities and study centers in Latin America. It can be concluded that poetic research is a critical way of approaching community problems based on the voice of its participants. It is also a methodology that unites researchers and their participants in a generative dialogue, which enhances qualitative research.
Diálogo e colaboração em Reunião em Espaço Aberto:
Authors: Arguelho Miriam Brum , Paniago Maria Cristina Lima 
Published: November 2017

O presente artigo apresenta a utilização da Metodologia de Reunião em Espaço Aberto (OST) no contexto de uma formação continuada online com Scratch a qual se intitulou “Programando e Aprendendo com o Scratch”. Tal formação problematizou conhecimentos e saberes relacionados às tecnologias educacionais e utilizou-se da metodologia de Reunião em Espaço Aberto a qual se mostrou como uma interface que desafia os participantes a resolver problemas de forma colaborativa e dialógica. A metodologia de Reunião em Espaço Aberto, ou Open Space–OST, foi criada ou “iniciada” pelo estadunidense Harisson Owen em 1997 e apresenta a junção de elementos de várias culturas ancestrais, como o caso do “bastão de falar” presente nas reuniões de círculo nas aldeias africanas, indígenas e em aldeias no interior de Portugal, os “jornais de parede, ou mercados tradicionais” presentes em culturas medievais e contemporâneas, o “respeito pelo outro” das culturas orientais. A partir dos desafios propostos aos professores no espaço aberto, foram produzidos vídeos com músicas, mapas conceituais, paródias, poesias e histórias animadas com o Scratch. Ao fim de cada atividade os participantes eram convidados a produzir uma narrativa crítico-reflexiva sobre a experiência vivenciada. A experiência descrita é parte de uma pesquisa de doutorado em Educação, em andamento e conta com o financiamento integral por meio de bolsa PROSUP/CAPES.
Evaluation of Interfacial Gap Volume of Two Low-shrinkage Composites Using Micro–Computed Tomography
Authors: Nahedh HNA Al , Sibai NS 
Published: November 2017

ABSTRACT

Objectives:
To investigate the efficacy of X-ray micro–computed tomography (μCT) in the detection and quantification of interfacial gap formation in standardized Class I and Class II resin composite restorations, to compare the interfacial gaps for two low-shrinkage resin composites with a methacrylate composite material, and to determine any correlation between the cavity configuration factor (C-factor) and the volume of gaps formed.

Methods and Materials:
Sixty standardized Class I and Class II cavities were prepared and divided into six groups. Three types of composites, with their recommended self-etching adhesive systems, were used: Filtek Z250 XT; Estelite Sigma Quick; and Filtek P90. Each of the composite materials was placed in 10 Class I and 10 Class II cavities. The specimens were digitized using Skyscan 1172 μCT. They were examined for gap volume measurements, the thickness of the adhesive layer, and location of interfacial gaps.

Results:
There was a significant difference in the mean gap volume percentages of the three materials. The gap volume percent of Estelite Sigma quick was significantly lower than that of Filtek P90. No significant difference in the mean gap volume percentages of Class I and Class II restorations was found, except for Estelite Sigma Quick, in which the Class I gap volume percentage was higher than that of the Class II restorations.

Conclusions:
μCT is an efficacious tool for the measurement of volumetric gaps formed at the tooth/restoration interface and for the evaluation of the adhesive layer. The differences in the C-factor do not always have a pronounced effect on the gap volumes of low-shrinkage composites.
Effect of Preparation Designs on the Prognosis of Porcelain Laminate Veneers: A Systematic Review and Meta-Analysis
Authors: Hong N , Yang H , Li J , Wu S , Li Y 
Published: November 2017

SUMMARY

Objective:
To investigate the association between preparation designs and prognosis of porcelain laminate veneers (PLVs).

Methods:
Electronic and manual literature searches were performed in Medline, Embase, CENTRAL, and Scopus databases for randomized controlled trials and retrospective and prospective cohort studies comparing any two of three preparation designs. The quality of the included studies was assessed using the Newcastle-Ottawa scale. Pooled hazard ratios and risk ratios were used to evaluate the difference between two preparation designs. Subgroup analyses, sensitivity analysis, and evaluation of publication bias were performed if possible.

Results:
Of 415 screened articles, 10 studies with moderate to high quality were included in the meta-analysis. Comparison of preparations with incisal coverage to preparations without coverage revealed a significant result based on time-to-event data (hazard ratio=1.81, 95% confidence interval [CI]=1.18-2.78, I2=12.5%), but the result was insignificant based on dichotomous data (risk ratio=1.04, 95% CI=0.59-1.83, I2=42.3%). The other comparisons between any two of overlap, butt-joint, and window types revealed no statistically significant difference. Subgroup analyses regarding the porcelain materials, location of prosthesis, and tooth vitality could account for only part of the heterogeneity. No evidence of publication bias was observed.

Conclusions:
Within the limitation of the present study, it can be concluded that preparation design with incisal coverage for PLVs exhibits an increased failure risk compared to those without incisal coverage. The failure risk of the overlap type may be higher than the butt-joint type but must be validated in further studies.
FUNCIONES DE TRANSFORMACION PARA EVALUACIÓN DE IMPACTO POR ANTENAS DE ESTACIONES BASE TELEFONIA MOVIL
Authors: Armesto Arenas Alexander , Angarita Castilla Wilson , Suarez Castrillón Sir Alexci 
Published: November 2017

Resumen: El presente estudio tuvo como objetivo definir métodos matemáticos mediante funciones de transformación que permitan medir la magnitud de las alteraciones ambientales provocadas por la instalación de estaciones base de telefonía móvil. Su aplicación fue realizada en el Colegio Instituto Técnico Industrial Ocaña. Para esto implementaron entrevistas, software QGIS y un equipo de medición de radiación electromagnética de alta frecuencia 60105 marca Aronia. Como resultado se obtuvieron cinco funciones de transformaciones en donde se relaciona el valor de impacto con las cantidades afectadas. En conclusión este tipo funciones son una herramienta que permite valora el impacto ambiental de este tipo de tecnologías de acuerdo a su magnitud. De acuerdo en su aplicación en el respectivo colegio, se concluye que hay un impacto ambiental adverso alto. Palabras clave: Ambiente, antenas, funciones, impacto, telefonía
ANÁLISIS DEL COMPORTAMIENTO DE SUELOS DE ALTA PLASTICIDAD CON LA ADICIÓN DEL MATERIAL DE RESIDUO EN LA FABRICACIÓN DE LADRILLO CERÁMICO
Authors: Gallardo Amaya Romel Jesús , Cuanalo Campos Oscar Andrés , Quintero Lemus Leidy Johana , Muñoz Angie Alejandra , Martinez Ciro Andrey 
Published: November 2017

En este proyecto de investigación se usó el residuo del ladrillo proveniente de la Ladrillera Ocaña, como un material alternativo para la adecuación de la subrasante de vías terciarias, la cual en muchas ocasiones está constituida por materiales de alta plasticidad que en épocas de invierno generan problemas de transitabilidad; siendo estas vías de gran importancia ya que permiten la comunicación a zonas de producción agrícola. La metodología utilizada se desarrolló en un marco Descriptivo-Experimental, donde se evidencio que el uso del residuo de ladrillo como material alternativo arroja buen comportamiento para disminuir la plasticidad y aumentar el índice CBR del suelo. Palabras clave: Alta plasticidad, material alternativo y Mejoramiento de suelos
Por una comunicación pensada desde las necesidades de las comunidades
Authors: Rodríguez Clemencia , Quijano Melba 
Published: November 2017

Con base en cinco investigaciones sobre comunicación comunitaria, este artículo desarrolla una reflexión sobre el campo de la Comunicación para el Cambio Social. El artículo propone una tercera vía a medio camino entre la Comunicación para el Desarrollo y la Comunicación Alternativa, un viraje fundado en el pensar desde las necesidades de información y comunicación de las comunidades, en vez de pensar la comunicación desde las verdades últimas de la teoría. Vista así, la Comunicación para el Cambio Social surge como un campo que toma lo mejor de estas dos tradiciones, pero no se casa con las verdades absolutas de ninguna.
Apuntes para una discusión re-visitando el concepto de comunicación política
Authors: Bonilla Vélez Jorge Iván 
Published: November 2017

Este artículo se propone re-visitar un concepto fundacional de los estudios de la comunicación como es la denominada comunicación política. Nuestro interés es abordar este concepto como un objeto problemático a explicar, esto es, como una categoría de clasificación social que puede ser sometida a un proceso de análisis de sus usos, limitaciones y contornos. Se entiende la comunicación política como un concepto histórico y cultural que no está definido por una esencia natural (¿qué define la esencia de este concepto?), sino por su relación y ubicación al interior de estructuras culturales, políticas e históricamente construidas que ha dotado de sentido y condicionado el uso mismo de este concepto.
Avaliação do uso de Ferramentas Financeiras na Prática de Gestão das Empresas do Setor de Vendas de Material de Construção e Ferragens
Authors: Moreira Bruno César Melo , Ferreira Natália Aparecida Gondim , Costa Daniel Fonseca 
Published: November 2017

Nos últimos anos, o setor de vendas de material de construção e ferragens tem vivenciado uma forte queda em seu volume de vendas, muito guiado pelo próprio desaquecimento do setor de construção civil (GONÇALVES, 2014). Associado ao delicado momento vivenciado pelo país, a acirrada competição com produtos importados, limitação de capital, estrutura administrativa enxuta e, muitas vezes, sem conhecimentos técnicos suficientes, tem impossibilitado, na maioria dos casos, que as empresas do setor apresentem uma administração financeira eficaz e consigam se manter no mercado. Em Formiga, cidade situada no centro-oeste de Minas Gerais, a situação também não se encontra diferente. Com aproximadamente 30 empresas no setor de vendas de materiais para construção e ferragens, todas de micro ou pequeno porte, o segmento vem sofrendo uma queda em suas vendas e, consequentemente em seu faturamento (FUNDAÇÃO JOÃO PINHEIRO, 2016). Sob este contexto, o objetivo do presente trabalho é verificar se as empresas do setor de venda de material de construção e ferragens da cidade de Formiga utilizam ferramentas financeiras em sua prática de gestão. Entende-se que, um dos diferenciais para que as mesmas consigam se manter competitivas, é que apresentem boas práticas de administração financeira. Para tanto, a metodologia empregada caracteriza-se como um survey, utilizando-se de um questionário, baseado em Cunha (2002), como método de coleta de dados. Os resultados mostraram que os gestores/administradores encontram dificuldades como falta de informações coerentes e reais, além de despreparo para a interpretação dos relatórios e incapacidade de obter vantagem competitiva por meio do uso eficiente da administração financeira.
Electroplating Ni-doped Mn-Co films on AISI 430 stainless steel as interconnects in solid oxide fuel cells (SOFC)
Authors: Kanyarat Worapan , Limprapard Piyapon , Siripongsakul Thamrongsin , Chandra-ambhorn Somrerk , Visuttipitukul Patama , Taweesup Kattareeya 
Published: November 2017

Abstract
The addition of Ni to Mn-Co films was prepared by electroplating process. Film behavior under corrosive environment was investigated by oxidation techniques. The samples were kept under stagnant air at 800 °C in heat treatment furnace at operating temperature of SOFC for 100 hours. The surface morphology and films compositions were then examined. Mn-Co films with nickel amount of 18.8 wt.-% exhibited the best oxidation resistance. Ni-doped Mn-Co films show high antioxidation behavior because of high film density and crack-free film. The film is composed of many small particles with close packing, and the average particle size is about 1 μm. Film thickness is around 11 μm with surface roughness of 82.97 nm and it has good coherence with substrates. Optimization of nickel amount also plays an important role in antioxidation performance.
The Behavior Associated to Death from External Causes in Elderly People in Brazil
Authors: Fixina Eliana Barreto , Maia Eulalia Maria Chaves , Ribeiro Dario De Queiroz 
Published: November 2017

METHODS: This is an ecological study that aimed to understand the behaviour of deaths from external causes in the population older than 60 years old in all Brazilian states. The data was collected using the Brazilian Mortality Information System and the population data from the Brazilian Institute of Geography and Statistics and from the SUS Informatics Department organized in historic series from 1995 to 2010.
RESULTS AND CONCLUSIONS: It is not possible to deny that deaths from external causes in elder citizens is not in an increasing and statistically significant tendency in most Brazilian states. This brings preoccupation about the issue, since discussions on the subjects are limited in the country, which makes this study good for future references in the field.
ALMA CO(3-2) Observations of Star-forming Filaments in a Gas-poor Dwarf Spheroidal Galaxy
Authors: Consiglio S. Michelle , Turner Jean L. , Beck Sara , Meier David S. , Silich Sergiy , Zhao Jun-Hui 
Published: November 2017

Abstract
We report ALMA observations of 12CO(3-2) and 13CO(3-2) in the gas-poor dwarf galaxy NGC 5253. These 0.″3(5.5 pc) resolution images reveal small, dense molecular gas clouds that are located in kinematically distinct extended filaments. Some of the filaments appear to be falling into the galaxy and may be fueling its current star formation. The most intense CO(3–2) emission comes from the central ∼100 pc region centered on the luminous radio-infrared H ii region known as the supernebula. The CO(3–2) clumps within the starburst region are anti-correlated with Hα on ∼5 pc scales, but are well-correlated with radio free–free emission. Cloud D1, which enshrouds the supernebula, has a high 12CO/13CO ratio, as does another cloud within the central 100 pc starburst region, possibly because the clouds are hot. CO(3–2) emission alone does not allow determination of cloud masses as molecular gas temperature and column density are degenerate at the observed brightness, unless combined with other lines such as 13CO.
The Circumstellar Disk HD 169142: Gas, Dust, and Planets Acting in Concert?*
Authors: Pohl A. , Benisty M. , Pinilla P. , Ginski C. , Boer J. de , Avenhaus H. , Henning Th. , Zurlo A. , Boccaletti A. , Augereau J.-C. , Birnstiel T. , Dominik C. , Facchini S. , Fedele D. , Janson M. , Keppler M. , Kral Q. , Langlois M. , Ligi R. , Maire A.-L. , Ménard F. , Meyer M. , Pinte C. , Quanz S. P. , Sauvage J.-F. , Sezestre É. , Stolker T. , Szulágyi J. , Boekel R. van , Plas G. van der , Villenave M. , Baruffolo A. , Baudoz P. , Mignant D. Le , Maurel D. , Ramos J. , Weber L. 
Published: November 2017

Abstract
HD 169142 is an excellent target for investigating signs of planet–disk interaction due to previous evidence of gap structures. We perform J-band (∼1.2 μm) polarized intensity imaging of HD 169142 with VLT/SPHERE. We observe polarized scattered light down to 0.″16 (∼19 au) and find an inner gap with a significantly reduced scattered-light flux. We confirm the previously detected double-ring structure peaking at 0.″18 (∼21 au) and 0.″56 (∼66 au) and marginally detect a faint third gap at 0.″70–0.″73 (∼82–85 au). We explore dust evolution models in a disk perturbed by two giant planets, as well as models with a parameterized dust size distribution. The dust evolution model is able to reproduce the ring locations and gap widths in polarized intensity but fails to reproduce their depths. However, it gives a good match with the ALMA dust continuum image at 1.3 mm. Models with a parameterized dust size distribution better reproduce the gap depth in scattered light, suggesting that dust filtration at the outer edges of the gaps is less effective. The pileup of millimeter grains in a dust trap and the continuous distribution of small grains throughout the gap likely require more efficient dust fragmentation and dust diffusion in the dust trap. Alternatively, turbulence or charging effects might lead to a reservoir of small grains at the surface layer that is not affected by the dust growth and fragmentation cycle dominating the dense disk midplane. The exploration of models shows that extracting planet properties such as mass from observed gap profiles is highly degenerate.
Revealing Black Holes with Gaia
Authors: Breivik Katelyn , Chatterjee Sourav , Larson Shane L. 
Published: November 2017

Abstract
We estimate the population of black holes with luminous stellar companions (BH-LCs) in the Milky Way (MW) observable by Gaia. We evolve a realistic distribution of BH-LC progenitors from zero-age to the current epoch taking into account relevant physics, including binary stellar evolution, BH-formation physics, and star formation rate, in order to estimate the BH-LC population in the MW today. We predict that Gaia will discover between 3800 and 12,000 BH-LCs by the end of its

mission, depending on BH natal kick strength and observability constraints. We find that the overall yield, and distributions of eccentricities and masses of observed BH-LCs, can provide important constraints on the strength of BH natal kicks. Gaia-detected BH-LCs are expected to have very different orbital properties compared to those detectable via radio, X-ray, or gravitational-wave observations.
All-cause Healthcare Costs and Mortality in Patients with Systemic Sclerosis with Lung Involvement
Authors: Fischer Aryeh , Kong Amanda M. , Swigris Jeffrey J. , Cole Ashley L. , Raimundo Karina 
Published: November 2017

Objective.Patients with systemic sclerosis (SSc) often develop interstitial lung disease (ILD) and/or pulmonary arterial hypertension (PAH). The effect of ILD and PAH on healthcare costs among patients with SSc is not well described. The objective of this analysis was to describe healthcare costs in patients with newly diagnosed SSc and SSc patients newly diagnosed with ILD and/or PAH in the United States.Methods.This retrospective cohort analysis was conducted in the Truven Health MarketScan Commercial and Medicare Supplemental healthcare claims databases from 2003 to 2014. Based on International Classification of Diseases-9-Clinical Modification diagnosis codes on medical claims, patients were classified into 3 groups: incident SSc, SSc with incident ILD (SSc-ILD), and SSc with incident PAH (SSc-PAH). Patients were required to have continuous enrollment for 5 years to measure all-cause healthcare costs. Costs (adjusted to US$) were reported overall and by service type and year following diagnosis. Because of the overlap between groups, statistical comparisons were not conducted.Results.There were 1957 patients with incident SSc, 219 with incident SSc-ILD, and 108 patients with incident SSc-PAH. Average (mean ± SD) all-cause healthcare costs over followup were higher for patients with incident SSc-ILD ($191,107 ± $322,193) or patients with incident SSc-PAH ($254,425 ± $240,497), compared to patients with incident SSc ($101,839 ± $167,155). Average annual costs over the 5-year period ranged from $18,513 to $23,268 for patients with incident SSc, from $31,285 to $55,446 for patients with incident SSc-ILD, and from $44,454 to $63,320 for patients with incident SSc-PAH. Costs tended to be the highest in the fifth year of followup.Conclusion.Among patients with SSc, ILD and PAH can result in substantial increases in healthcare costs.