bluuebunny/crossref_metadata_2025_split huggingface dataset:
Risk factors and protective adolescent depression in the city of Medellín
Authors: Hoyos Zuluaga Elizabeth , Lemos Hoyos Mariantonia , Torres de Galvis Yolanda 
Published: August 2016

Mental disorders have become a key concern in the scientific and epidemiological in recent years. This is because the social consequences that some behaviors of these disorders may involve, reason it is important to inquire about the factors associated with one of the most prevalent mental disorders in the population, depression. The objective is to evaluate the association of risk factors and protective of depression in adolescents in the city of Medellin. Design is a study of Case-Control Analytical which was identified by multivariate analysis the weight of the factors related to depression as the dependent variable. The study population consisted of school pupils from 9 to 19 years living in the city of Medellin, belonging to the public and private schools of the city, was characterized by a mean age of 13.77 with a standard deviation of 2.195 years , 56.7% were female. Statistical analysis was performed with significance level p <0.05, where significant association with family cohesion, OR = 2.35 (CI = 1.63 to 3.41); social scale, OR = 0.657 (CI = 0.453 to 0.953) and Academic Area, OR = 0.534 (CI = 0.408 to 0.699). Environmental factors such as stressful life events, relationship problems with parents, spirituality, affiliation with prosocial peers and antisocial behavior, academic achievement and commitment, have an association against the internalizing disorders, where the depression.
La investigación narrativa como moción epistémico-política
Authors: Yedaide María Marta , Álvarez Zelmira , Porta Luis 
Published: August 2016

La investigación narrativa se encuentra necesariamente atravesada por la disputa por el sentido de lo que es investigar, y lo que puede y debe esperarse de esta empresa. Si bien su legitimidad epistémica y su uso asiduo en el estudio de la educación han ido en proporcional incremento, su validez metodológica sigue despertando inquietudes que remiten ya no sólo a cuestionamientos técnicos, sino que arrastran posturas políticas respecto de la naturaleza de la realidad, el lugar de los sujetos en el devenir de la experiencia humana y el poder de la práctica científica en el juego de las construcciones de sentido. Este trabajo se aboca al análisis del estado de la cuestión en el contexto geográfico inmediato y su marco geo-político más general, y sostiene las preguntas respecto de las consecuencias políticas de la investigación narrativa. Comparte asimismo retazos narrativos de profesores entrevistados enla Universidad Nacionalde Mar del Plata (UNMdP) al intentar dar cuenta de la buena enseñanza, como modo de ilustrar la potencia política de este tipo de indagaciones.
Diagnostico agrosocial de la comunidad indígena de Kashaama: Un estudio empírico en el estado de Anzoátegui, Venezuela
Authors: Olivares Barlin Orlando , Franco Ervin 
Published: August 2016

El objetivo de esta investigación fue diagnosticar la situación agrícola y social de la comunidad indígena Kashaama, ubicada en el estado Anzoátegui, Venezuela. Para esto, se aplicó una encuesta a cuarenta productores agrícolas. Posteriormente, la interpretación de los resultados se hizo a través del método de Análisis de Componentes Principales (ACP). Mediante el ACP se seleccionaron los primeros cinco componentes que explican el 70.0 % de la variación total. Se detectó que los factores de mayor incidencia fueron: dimensión de la finca, el tipo de cultivo y el rendimiento. Este tipo de estudios representa una base práctica con relación a la gestión agrícola y social que representa un punto de partida en la formulación de alternativas de soluciones viables.
Características de los grupos colombianos de investigación Categoría A1 en Ciencias Sociales (2014-2015)
Authors: Ossa Julio César , Palacio Jorge Enrique 
Published: August 2016

Un total de 3970 Grupos de Investigación, Desarrollo Tecnológico o de Innovación fueron reconocidos por Colciencias en la pasada Convocatoria de Medición (Número 693 del año 2014). Esta editorial presenta los indicadores que caracterizan los 36 Grupos de Investigación en Ciencias Sociales que fueron clasificados en categoría A1 de acuerdo a los resultados de esta convocatoria, con el fin de contribuir, al debate que se viene generando en torno a la crisis que viven las ciencias sociales con las actuales políticas de educación STEM que se están implementando en Colombia y en diferentes países. De allí que en este momento sea pertinente formular la pregunta: ¿Cómo convertir las Ciencias sociales en una prioridad nacional?
Importancia de los microcréditos como instrumento de financiación en el desarrollo social
Authors: Inglada Galiana María Elena , Sastre Centeno José Manuel , Bilbao María Cristina de Miguel 
Published: August 2016

El éxito del desarrollo de las microfinanzas en general y los microcréditos en particular entre las clases más pobres de los países menos desarrollados, ha cambiado los parámetros sobre los tipos de ayudas a dichos colectivos. Por otra parte, la evolución de las microfinanzas durante las últimas tres décadas ha supuesto un cambio en aquellas estructuras que se han profesionalizado, alejándose así de los subsidios estatales y acercándose a la autofinanciación y, consecuentemente, al mercado financiero tradicional, aunque sin abandonar las características básica del sector. En este trabajo pretendemos explicar el porqué de las microfinanzas y los microcréditos, sus objetivos fundamentales, la operativa y el mercado, humano y social en el que se desarrollan sus actividades. Pretendemos asimismo, establecer una pauta de comportamiento y acción de la coyuntura actual del sector y vislumbrar una proyección futura, que permita conocer si las microfinanzas tienden a una mayor expansión o, por el contrario, los problemas con que se enfrenta pueden ralentizar su desarrollo actual. El hecho de que los microcréditos hayan traspasado las fronteras de los países pobres y se estén implantando también en los más desarrollados, solo enfatiza el éxito de los mismos y que las bolsas de pobreza están presentes en cualquier lugar del mundo. El futuro de los microcréditos está tanto en los países en vías de desarrollo como en los del primer mundo.
Prácticas educativas de una maestra de transición. Un estudio sociocultural constructivista
Authors: Roncancio Moreno Mónica , Branco Angela 
Published: August 2016

<p>El presente trabajo tiene como objetivo analizar desde una perspectiva sociocultural constructivista, las prácticas educativas de una profesora de transición de una escuela rural del Departamento del Valle del Cauca y su interacción con sus alumnos. Se observó la práctica educativa en las dos primeras semanas de clases del año lectivo y se llevó a cabo una entrevista semi-estructurada con la maestra con la finalidad de identificar las concepciones y creencias de la profesora acerca de los objetivos del grado transición. Se analizaron los datos usando el método microgenético mediante la selección de los episodios más significativos de la interacción profesor-alumno. Los resultados patentizan un marcado énfasis en prácticas de escolarización y en la interacción profesor-alumno. Se destaca la ausencia de prácticas de expresión dialógica y la participación activa de los niños. Se sugiere diseñar programas educativos que enfaticen en el acogimiento de los niños en la escuela de manera que se les proporcione una voz en su proceso de ajuste a la educación básica.</p><p> </p>
Parrhesia: Entre ley y filosofía
Authors: Vásquez Gómez Víctor Hugo 
Published: August 2016

<p>Uno de los conceptos clave de la democracia griega es <em>parrhesia </em>(parrhsÛa): <em>decirlo todo</em>; <em>hablar franco</em>; <em>libertad de palabra;</em> <em>decir verdad</em>. Normalmente, su óptimo ejercicio se ha asumido como un principio capaz de conservar dicha forma de gobierno en la medida en que, ante una decisión difícil y crucial (económica, bélica o social), señala siempre una verdad, un consejo positivo a la ciudad que es respetado por todos. En esa dirección, el <em>parrhesiastés</em>, al ocupar el papel del que dice todo, debe ser alguien lo suficientemente recto y ejemplar como para hacerse considerar: es el ciudadano íntegro comprometido con el bienestar de la <em>polis</em>. Sin embargo, la <em>parrhesia</em> no se limita a ese ámbito de acción ni es exclusiva del ciudadano. En este estudio se analizan esos otros lugares: el preconstitucional (como condición de posibilidad para los <em>nomoi</em> de Solón ya en el siglo VI a. C.) y el filosófico (en su identidad con el <em>êthos</em> virtuoso y libre); ello con el propósito de sostener la idea según la cual la <em>parrhesia</em> llega a convertirse en la manifestación excelsa y paroxística de la autonomía y la libertad del filósofo en la época helenística, especialmente con los filósofos cínicos.</p>
THE DISTURBANCE OF A MILLISECOND PULSAR MAGNETOSPHERE
Authors: Shannon R. M. , Lentati L. T. , Kerr M. , Bailes M. , Bhat N. D. R. , Coles W. A. , Dai S. , Dempsey J. , Hobbs G. , Keith M. J. , Lasky P. D. , Levin Y. , Manchester R. N. , Osłowski S. , Ravi V. , Reardon D. J. , Rosado P. A. , Spiewak R. , van Straten W. , Toomey L. , Wang J.-B. , Wen L. , You X.-P. , Zhu X.-J. 
Published: August 2016

ABSTRACT
Pulsar timing has enabled some of the strongest tests of fundamental physics. Central to the technique is the assumption that the detected radio pulses can be used to accurately measure the rotation of the pulsar. Here, we report on a broadband variation in the pulse profile of the millisecond pulsar J1643−1224. A new component of emission suddenly appears in the pulse profile, decays over four months, and results in a permanently modified pulse shape. Profile variations such as these may be the origin of timing noise observed in other millisecond pulsars. The sensitivity of pulsar-timing observations to gravitational radiation can be increased by accounting for this variability.
Baseline Predictors of Vitreomacular Adhesion/Traction Resolution Following an Intravitreal Injection of Ocriplasmin
Authors: Jackson Timothy L. , Regillo Carl D. , Girach Aniz , Dugel Pravin U. ,   on behalf of the MIVI-TRUST Study Group
Published: August 2016

BACKGROUND AND OBJECTIVE:
To determine factors predicting response to ocriplasmin (Jetrea; ThromboGenics, Iselin, NJ) response in patients with symptomatic vitreomacular adhesion (VMA).

PATIENTS AND METHODS:
Combined analysis of two multicenter, prospective, randomized, double-masked trials of intravitreal ocriplasmin 125 µg injection versus placebo. Patients had vitreomacular traction with or without a full-thickness macular hole (FTMH). Multivariate logistic regression was used to determine factors influencing treatment response (complete VMA release [day 28] and non-surgical FTMH closure [month 6]).

RESULTS:

Younger age, presence of FTMH (odds ratio [OR] = 2.1; 95% confidence interval [CI], 1.1–3.7), VMA diameter of 1,500 µm or less (OR = 4.9; 95% CI, 2.0–12.4), phakic lens status (OR = 2.8; 95% CI, 1.5–5.2), and absence of epiretinal membrane (OR = 4.1; 95% CI, 2.2–7.9) predicted VMA resolution. FTMHs with apical diameter of 250 µm or less were more likely to close than larger holes (58.3% vs. 24.6%;
P
= .013). Both FTMH size groups had significantly greater chance of VMA resolution and FTMH closure versus controls.

CONCLUSION:
Ocriplasmin is most effective in younger patients with focal VMA and without an epiretinal membrane.

[
Ophthalmic Surg Lasers Imaging Retina
. 2016;47:716–723.]
YAC 1.2.0: new aspects for coupling software in Earth system modelling
Authors: Hanke Moritz , Redler René , Holfeld Teresa , Yastremsky Maxim 
Published: August 2016

Abstract. A lightweight software library has been developed to realise the coupling of Earth system model components. The software provides parallelised two-dimensional neighbourhood search, interpolation, and communication for the coupling between any two model components. The software offers flexible coupling of physical fields defined on regular and irregular grids on the sphere without a priori assumptions about grid structure or grid element types. All supported grids can be combined with any of the supported interpolations. We describe the new aspects of our approach and provide an overview of the implemented functionality and of some algorithms we use. Preliminary performance measurements for a set of realistic use cases are presented to demonstrate the potential performance and scalability of our approach. YAC 1.2.0 is now used for the coupling of the model components in the Icosahedral Nonhydrostatic (ICON) general circulation model.
Projected impacts of climate change on hydropower potential in China
Authors: Liu Xingcai , Tang Qiuhong , Voisin Nathalie , Cui Huijuan 
Published: August 2016

Abstract. Hydropower is an important renewable energy source in China, but it is sensitive to climate change, because the changing climate may alter hydrological conditions (e.g., river flow and reservoir storage). Future changes and associated uncertainties in China's gross hydropower potential (GHP) and developed hydropower potential (DHP) are projected using simulations from eight global hydrological models (GHMs), including a large-scale reservoir regulation model, forced by five general circulation models (GCMs) with climate data under two representative concentration pathways (RCP2.6 and RCP8.5). Results show that the estimation of the present GHP of China is comparable to other studies; overall, the annual GHP is projected to change by −1.7 to 2 % in the near future (2020–2050) and increase by 3 to 6 % in the late 21st century (2070–2099). The annual DHP is projected to change by −2.2 to −5.4 % (0.7–1.7 % of the total installed hydropower capacity (IHC)) and −1.3 to −4 % (0.4–1.3 % of total IHC) for 2020–2050 and 2070–2099, respectively. Regional variations emerge: GHP will increase in northern China but decrease in southern China – mostly in south central China and eastern China – where numerous reservoirs and large IHCs currently are located. The area with the highest GHP in southwest China will have more GHP, while DHP will reduce in the regions with high IHC (e.g., Sichuan and Hubei) in the future. The largest decrease in DHP (in %) will occur in autumn or winter, when streamflow is relatively low and water use is competitive. Large ranges in hydropower estimates across GHMs and GCMs highlight the necessity of using multimodel assessments under climate change conditions. This study prompts the consideration of climate change in planning for hydropower development and operations in China, to be further combined with a socioeconomic analysis for strategic expansion.
Hyperspectral imaging for monitoring oxygen saturation levels during normothermic kidney perfusion
Authors: Tetschke Florian , Markgraf Wenke , Gransow Marian , Koch Susanne , Thiele Christine , Kulcke Axel , Malberg Hagen 
Published: August 2016

Abstract. The development of improved preservation techniques and the reliable assessment of donor grafts are main fields of research in transplantation medicine. Normothermic machine perfusion (NMP) is a promising alternative to static cold storage of organs, maintaining physiological conditions during preservation. In combination with NMP, we introduce hyperspectral imaging (HSI) as a novel approach for the monitoring of physiological kidney parameters. A line-scan HSI camera system was used to record images of porcine kidneys during NMP. Based on a dual-wavelength algorithm, the oxygen saturation levels were calculated from HSI recordings. Furthermore, we observed HSI images in the near-infrared (NIR) range in order to detect water characteristics of the kidney tissue. We found increasing levels of oxygenation during NMP and could discriminate between perfused and non-perfused areas. Cysts at the renal capsula were characterized by an absorption increase in the NIR band. Within this work, we showed that HSI is able to detect relevant chemical changes during NMP and allows the identification of pathologic variations.
Determination of Zn in Dry Feeds for Cats and Dogs by Energy-Dispersive X-Ray Fluorescence Spectrometry
Authors: Ávila Dayara Virgínia L , Souza Sidnei O , Costa Silvânio Silvério L , Araujo Rennan Geovanny O , Garcia Carlos Alexandre B , Alves José do Patrocínio H , Passos Elisangela A 
Published: August 2016

Abstract
This work describes an analytical method for Zn determination in dry feeds for cats and dogs by energy-dispersive X-ray fluorescence (EDXRF). Samples of dry feed were powdered and prepared in the form of pellets for direct analysis by EDXRF. The LOQ (10σ) was 0.4 mg/kg. The samples were also analyzed by inductively coupled plasma-optical emission spectrometry (ICP-OES) as an independent comparative method. Application of a paired t-test showed no significant differences between Zn concentrations obtained by EDXRF and ICP-OES (at a 95% confidence level). Analysis of variance was also applied to the results and revealed no significant differences between the two techniques (at a 95% confidence level). The precision, expressed as the RSD (n = 3), was RSD &lt; 4.55%. This analytical method provides a simple, rapid, accurate, and precise determination of Zn in dry feeds for cats and dogs by EDXRF as direct, solid-sample analysis.
Development of Certified Reference Materials for Diarrhetic Shellfish Poisoning Toxins, Part 2: Shellfish Matrix Materials
Authors: McCarron Pearse , Reeves Kelley L , Giddings Sabrina D , Beach Daniel G , Quilliam Michael A 
Published: August 2016

Abstract
Okadaic acid (OA) and its analogs, dinophysistoxins-1 (DTX1) and -2 (DTX2) are lipophilic biotoxins produced by marine algae that can accumulate in shellfish and cause the human illness known as diarrhetic shellfish poisoning (DSP). Regulatory testing of shellfish is required to protect consumers and the seafood industry. Certified reference materials (CRMs) are essential for the development, validation, and quality control of analytical methods, and thus play an important role in toxin monitoring. This paper summarizes work on research and development of shellfish tissue reference materials for OA and DTXs. Preliminary work established the appropriate conditions for production of shellfish tissue CRMs for OA and DTXs. Source materials, including naturally incurred shellfish tissue and cultured algae, were screened for their DSP toxins. This preliminary work informed planning and production of a wet mussel (Mytilus edulis) tissue homogenate matrix CRM. The homogeneity and stability of the CRM were evaluated and found to be fit-for-purpose. Extraction and LC-tandem MS methods were developed to accurately certify the concentrations of OA, DTX1, and DTX2 using a combination of standard addition and matrix-matched calibration to compensate for matrix effects in electrospray ionization. The concentration of domoic acid was also certified. Uncertainties were assigned following standards and guidelines from the International Organization for Standardization. The presence of other toxins in the CRM was also assessed and information values are reported for OA and DTX acyl esters.
Complex linear minimum mean-squared-error equalization of spatially quadrature-amplitude-modulated signals in holographic data storage
Authors: Sato Takanori , Kanno Kazutaka , Bunsen Masatoshi 
Published: August 2016

Abstract
We applied complex linear minimum mean-squared-error equalization to spatially quadrature-amplitude-modulated signals in holographic data storage (HDS). The equalization technique can improve dispersion in constellation outputs due to intersymbol interference. We confirm the effectiveness of the equalization technique in numerical simulations and basic optical experiments. Our numerical results have shown that intersymbol interference of a retrieved signal in a HDS system can be improved by using the equalization technique. In our experiments, a mean squared error (MSE), which indicates the deviation from an ideal signal, has been used for quantitatively evaluating the dispersion of equalized signals. Our equalization technique has been able to improve the MSE. However, symbols in the equalized signal have remained inseparable. To further improve the MSE and make the symbols separable, reducing errors in repeated measurements is our future task.
A process‐based model for aeolian sediment transport and spatiotemporal varying sediment availability
Authors: Hoonhout Bas M. , Vries Sierd de 
Published: August 2016

AbstractAeolian sediment transport is influenced by a variety of bed surface properties, like moisture, shells, vegetation, and nonerodible elements. The bed surface properties influence aeolian sediment transport by changing the sediment transport capacity and/or the sediment availability. The effect of bed surface properties on the transport capacity and sediment availability is typically incorporated through the velocity threshold. This approach appears to be a critical limitation in existing aeolian sediment transport models for simulation of real‐world cases with spatiotemporal variations in bed surface properties. This paper presents a new model approach for multifraction aeolian sediment transport in which sediment availability is simulated rather than parameterized through the velocity threshold. The model can cope with arbitrary spatiotemporal configurations of bed surface properties that either limit or enhance the sediment availability or sediment transport capacity. The performance of the model is illustrated using four prototype cases, the simulation of two wind tunnel experiments from literature and a sensitivity analysis of newly introduced parameters.
The “warm” Marine Isotope Stage 31 in the Labrador Sea: Low surface salinities and cold subsurface waters prevented winter convection
Authors: Aubry A. M. R. , de Vernal A. , Hillaire‐Marcel C. 
Published: August 2016

AbstractSurface and subsurface conditions in the Labrador Sea during Marine Isotope Stage (MIS) 31 at the Integrated Ocean Drilling Program Site U1305 off southwest Greenland are reconstructed based on dinocyst and foraminifer assemblages. Isotopic compositions of planktonic (Neogloboquadrina pachyderma, Np) and benthic (Cibicides wuellerstorfi, Cw, andOridorsalis umbonatus, Ou) foraminifera provide further information about water properties in the mesopelagic layer as well as at the seafloor. Dinocyst proxy reconstructions indicate low salinities (32–34.5), cool winters (3–6°C), and mild summers (10–15°C) in the surface water layer during the MIS 31 “optimum”. However, planktonic foraminifer assemblages largely dominated by Np suggest relatively cold subsurface conditions in winter and summer (<4°C). Lower δ13C values in Np versus Cw further suggest either a lesser‐ventilated mesopelagic layer than the bottom one or high organic matter oxidation rates at Np habitat depth. The dinocyst and planktonic foraminifer records together suggest a strong stratification between the surface and subsurface water layers. Isotopic and micropaleontological data thus converge toward paleoceanographical conditions unsuitable for convection and intermediate or deep water formation in the Labrador Sea during the warm MIS 31 interglacial, a situation comparable to the one that prevailed during the warm MIS 5e.