bluuebunny/crossref_metadata_2025_split huggingface dataset:
PERCEPCIÓN DEL CLIMA INSTITUCIONAL Y EL RENDIMIENTO ACADÉMICO DE LOS ESTUDIANTES DE LA FACULTAD DE CIENCIAS DE LA EDUCACIÓN DE LA UNA PUNO.
Authors: MANCHA PINEDA ESTANISLAO EDGAR , TUMI QUISPE JULIO ADALBERTO 
Published: July 2015

<p style="text-align: justify;">La investigación tiene como objetivo general, determinar la relación que existe entre la percepción del clima Institucional y el rendimiento académico de los estudiantes de la Facultad de Ciencias de la Educación, Universidad Nacional del Altiplano – Puno, durante el año académico 2011. Corresponde al tipo de investigación no experimental con diseño correlacional, con instrumentos para cada variable de estudio en la recolección de datos, y para el procesamiento de datos, se utilizó el software SPSS versión 19. La conclusión principal del estudio, es que existe una relación directa y positiva entre la percepción del clima Institucional y el rendimiento académico de los estudiantes de la Facultad de Ciencias de la Educación, Universidad Nacional del Altiplano – Puno, tal como se evidencian los resultados obtenidos de correlaciones significativas al nivel 0,01 (bilateral) por especialidades, donde se aprecia: 0,745 en la especialidad de Lengua, Literatura, Psicología y Filosofía; 0,610 en la especialidad de Ciencias Sociales; 0,541 en la especialidad de Matemática e Informática y 0,759 en la especialidad de Biología, Física, Química y Laboratorios. Así mismo el nivel de rendimiento académico de los estudiantes de la Facultad de Educación de la Universidad Nacional del Altiplano – Puno se encuentra entre los niveles de deficiente regular y bueno, es decir, en un puntaje de 00 a 15, ubicándose los mayores porcentajes de alumnos en los niveles de regular a bueno. Por consiguiente, se puede afirmar que del total de 120 estudiantes que equivalen al 100% de la población de estudio, el 51% de estudiantes se encuentra en el nivel bueno (13-15), el 30% en el nivel regular (11-12), el 13% en el nivel deficiente (00-10 y solamente un 5% en el nivel muy bueno (16-17); respectivamente.</p><p style="text-align: justify;"><strong>PALABRAS CLAVE: </strong>Clima Institucional, percepción, rendimiento académico<strong>.</strong></p>
OBTENCIÓN DE BIOGÁS COMO FUENTE DE ENERGÍA RENOVABLE A PARTIR DE LOS SUBPRODUCTOS DEL CAFÉ
Authors: ROMERO LOAIZA RICARDO , MAMANI PARI RENZO HENRY 
Published: July 2015

<p>El trabajo de investigación se realizó en la cuenca del valle de yanatile, distrito de Yanatile, provincia de Calca, región de Cusco, 2012. En la zona realizan el proceso beneficiado vía húmedo de café, los residuos orgánicos de esta actividad son arrojados a los cursos de agua y/o terrenos agrícolas, sin tratamiento alguno, causando graves problemas de contaminación ambiental, como generación de gas metano y bióxido de carbono debido a la descomposición aeróbica de los subproductos del café, estos gases son una fuente de contaminación atmosférica y asimismo generan el aumento de la temperatura de la Tierra, lo que podría originar importantes cambios climáticos con graves implicaciones para la productividad agrícola. El objetivo de la investigación se logró de manera satisfactoria con la obtención de biogás como fuente de energía renovable a partir de los subproductos del café, utilizando biodigestores de modelo tipo Taiwán de forma tubular. Como parte de la metodología se logró estimar la cantidad de generación de gas metano y bióxido de carbono a partir de la muestra de la pulpa y mucílago, con el resultado de la estimación se diseña y se construye un sistema de biodigestores, para su alimentación se usan la pulpa humectada y mucílago de café. Como Instrumentos de medición se utilizaron los sensores de temperatura, sensor pH-metro, manómetro columna de agua, sensor de gas dióxido de carbono, horno de secado, cromatografía. Los resultados encontrados responde al objetivo general planteado ya que se encontró 6, 430,912.65 m3 de biogás como estimado, compuesto por: 65.224 % de metano, 29.776 % de bióxido de carbono y 5 % de otros gases, oportunidad para generar energía en el sector cafetalero utilizando los subproductos del proceso beneficiado de café. El lodo residual orgánico contiene: Nitrógeno 1.508 a 1.942 %, Fosforo 0.765 a 1.373 %, Potasio 0.46 a 1.83 %, el resultado garantiza que el lodo residual debe ser usado como abono base Nitrógeno, Fosforo y Potasio, en la misma propiedad del cafetalero.</p><p><strong>Palabras clave: </strong>Biogás, residuos orgánicos, subproductos del café, biodigestores.</p>
PRODUCCION DE SEMILLA DE AVENA FORRAJERA (Avena sativa L.) CON INCORPORACION DE HUMUS DE LOMBRIZ EN EL CENTRO DE INVESTIGACION Y PRODUCCION CAMACANI. PUNO. PERU.
Authors: ZAPAZA PARI JUAN GREGORIO , MIRANDA CHOQUE FRANCIS , VILLALTA ROJAS PEDRO 
Published: July 2015

<p>El trabajo se condujo durante la campaña agrícola 2012-2013 en el Centro de Investigación y Producción Camacani de la Universidad Nacional del Altiplano, Puno, a 3850 m de altitud, con el objeto de evaluar el rendimiento y calidad de semilla de avena forrajera, variedad Tayco, por efecto de abonamiento con humus de lombriz. La densidad de siembra fue 120 kg/ha y los tratamientos: 0 t/ha; 2 t/ha; 3 t/ha y 4 t/ hade humus de lombriz, habiéndose aplicado fertilización complementaria con Urea al 46% N en la fase de macollamiento(60 kg/ha). El resultado indica que a mayor dosis de humus de lombriz (4 t/ha) se obtiene mayor altura de planta (1,62 m) en comparación con el tratamiento control (1,14 m). Asimismo, a mayor dosis de humus de lombriz (4 t/ha) el rendimiento de semilla fue 1,92 t/ha, con 85,33 % de poder germinativo siendo superior al tratamiento testigo (0,87t/ha) con 61,33 % de poder germinativo. En conclusión, aplicar humus de lombriz en el cultivo de avena, variedad Tayco, significa producir más semilla de mejor calidad.</p><p><strong>PALABRAS CLAVE: </strong>* Avena forrajera * humus de lombriz * poder germinativo * semilla</p>
REPRESENTACIONES SOCIALES DE LA POBLACIÓN DE LA CIUDAD DE PUNO SOBRE GESTIÓN DE RESIDUOS SÓLIDOS
Authors: TUMI QUISPE JESUS EVARISTO 
Published: July 2015

<p>La investigación tiene como objetivo determinar el nivel de conocimientos, actitudes y prácticas que posee la población de la ciudad de Puno sobre gestión de residuos sólidos urbanos y saneamiento ambiental básico. El estudio realizado en el 2011, es de carácter no experimental, transversal, explicativo, correlacional y de nivel micro. Los resultados obtenidos son: El nivel de conocimientos que posee la mayoría de la población de la ciudad de Puno es deficiente sobre el ciclo de residuos sólidos (55%), la tipificación de los residuos sólidos (59.1%), clasificación de residuos sólidos (64.6%), el compostaje (76.3%) y el reciclaje (69.5%) como mecanismos de conservación y manejo de residuos sólidos. Las actitudes que posee la mayoría de la población de Puno sobre saneamiento ambiental, son inadecuadas en cuanto a el lugar donde se realiza la disposición final de los residuos sólidos (66%), la forma de almacenamiento de agua en la vivienda (60%). Esta situación está condicionada por el estatus socioeconómico, el acceso a información, educación ambiental, servicios básicos y la localización de la vivienda. La investigación pone en evidencia la necesidad impostergable de que la gestión sostenida de residuos sólidos demanda de un enfoque integral que articule los factores tecnológicos, institucionales y sociales; así como pretende sentar las bases fundamentales para el programa de educación ambiental que las entidades tutelares (ALT, PELT, gobiernos locales y regional) deben poner en marcha y generar una conciencia ambiental y ecológica.</p><p><strong>PALABRAS CLAVE: </strong>* Actitudes * conocimientos * educación ambiental * gestión * residuos sólidos * saneamiento * representaciones sociales.</p>
PROPIEDADES PSICOMÉTRICAS DEL CUESTIONARIO EDUCATIVO CLÍNICO: ANSIEDAD Y DEPRESIÓN EN ESTUDIANTES DE SECUNDARIA DE TRUJILLO
Authors: RUIZ CABALLERO KATHERINE MARINA 
Published: July 2015

<h4 class="text-primary">Resumen</h4><p style="text-align: justify;">El presente estudio de tipo Tecnológica tuvo como objetivo describir las propiedades psicométricas del Cuestionario Educativo Clínico: Ansiedad y Depresión en una muestra de estudiantes del primero al quinto de secundaria en Instituciones Educativas de la ciudad de Trujillo. La muestra estuvo constituida por 600 sujetos. Los resultados obtenidos del CECAD fueron sometidos a un análisis estadístico encontrando que el testes válido y confiable. Para determinar la validez de constructo se hizo por medio del análisis ítem - test, en el cual se obtuvieron puntajes mayores a 0.30 y en el análisis factorial realizado se obtuvo la agrupación de ítems en once factores según su carga factorial; luego se procedió a realizar el análisis factorial confirmatorio lo cual generó la composición de las cuatro dimensiones planteadas por los autores de la prueba. La confiabilidad se determinó por medio del análisis deAlfha de Cronbach, alcanzando un nivel de Confiabilidad elevada con un Alpha =0.936.</p><p style="text-align: justify;"><strong>PALABRAS CLAVE: </strong><em>*Ansiedad * Depresión * Validez de constructo *Análisis factorial * Confiabilidad</em></p><h4 class="text-primary">ABSTRACT</h4><p><strong>PSYCHOMETRIC PROPERTIES OF THE QUESTIONNAIRE CLINICAL EDUCATION: ANXIETY AND DEPRESSION IN HIGH SCHOOL STUDENTS TRUJILLO</strong></p><p style="text-align: justify;">Type This Technological study aimed to describe the psychometric properties of Clinical Education Questionnaire: Anxiety and depression in a sample of students from first to fifth secondary of two educational institutions «A» and «B» in the city of Trujillo. The sample consisted of 441 students from the school «A» and 159 of the educational institution «B.» The results of CECAD were subjected to statistical analysis found that the test is valid and reliable. To determine the construct validity was made by analyzing item - test, in which scores were greater than 0.30 and the factor analysis was obtained in eleven grouping of items by factor loading factors, we proceeded to perform the confirmatory factor analysis which led to the composition of the four dimensions raised by the authors of the test. Reliability was determined through Cronbach Alfha analysis, reaching a high level of reliability with Alpha = 0.936. In addition we developed a general T score scale for the dimensions of Futility and irritability, as there were no differences between ages for these dimensions.</p><p><strong>KEY WORDS: </strong>* Anxiety * Depression * construct validity * factor analysis * reliability</p>
Visualization of Carbon Dioxide Enhanced Oil Recovery by Diffusion in Fractured Chalk
Authors: Eide Øyvind , Fernø Martin A. , Alcorn Zachary , Graue Arne 
Published: July 2015

Summary
This work demonstrates that diffusion may be a viable oil-recovery mechanism in fractured reservoirs during injection of carbon dioxide (CO2) for enhanced oil recovery, depending on the CO2 distribution within the fracture network and distance between fractures. High oil recovery was observed during miscible, supercritical CO2 injection (RF = 86% original oil in place) in the laboratory with a fractured chalk core plug with a large permeability contrast. Dynamic 3D fluid saturations from computed-tomography (CT) imaging made it possible to study the local oil displacement in the vicinity of the fracture, and to calculate an effective diffusion coefficient with analytical methods. The obtained diffusion coefficient varies between 0.83 and 1.2 ×10−9m2/s, depending on the method used for calculation. A numerical sensitivity analysis, with a validated numerical model that reproduced the experiments, showed that the rate of oil production during CO2 injection declined exponentially with increasing diffusion lengths from the CO2-filled fracture and oil-filled matrix. In a numerical upscaling effort, with the experimentally achieved diffusion coefficient, oil-recovery rates and local flow were studied in an inverted five-spot pattern in a heavily fractured carbonate reservoir.
Closed-Loop Field Development Under Uncertainty by Use of Optimization With Sample Validation
Authors: Shirangi Mehrdad G. , Durlofsky Louis J. 
Published: July 2015

Summary
In this work, we develop and apply a general methodology for optimal closed-loop field development (CLFD) under geological uncertainty. CLFD involves three major steps: optimizing the field-development plan on the basis of current geological knowledge; drilling new wells, and collecting hard data and production data; and updating multiple geological models on the basis of all the available data. In the optimization step, the number, type, locations, and controls for new wells (and future controls for existing wells) are optimized with a hybrid particle swarm optimization-mesh adaptive direct search algorithm. The objective here is to maximize expected (over multiple realizations) net present value (NPV) of the overall project. History matching is accomplished with an adjoint-gradient-based “randomized maximum likelihood” procedure. Because the CLFD history-matching component is fast relative to the optimization component, we generate a relatively large number of history-matched models. Optimization is then performed with a set of “representative” realizations selected from the full set of history-matched models. We introduce a systematic optimization with sample validation (OSV) procedure, in which the number of realizations used for optimization is increased if an appropriate validation criterion is not satisfied. The CLFD methodology is applied to 2D and 3D example cases. Results show that the use of CLFD increases the NPV for the “true” (synthetic) model by 10 to 70% relative to that achieved by optimizing over a large number of prior realizations. We also compare the results for CLFD with OSV to results that use a fixed number of geological realizations. These comparisons show that the use of too few realizations in the CLFD optimization step can result in lower true-model NPVs, whereas OSV provides a systematic approach for determining the proper number of realizations.
A Tale of Two Islamophobias The Paradoxes of Civic Nationalism in Contemporary Europe and the United States
Authors: Springs Jason A. 
Published: July 2015

AbstractI argue that trends of diagnosing anti-Muslim attitudes and activism as “Islamophobia” in European and the U.S. contexts may actually aid and abet more subtle varieties of the very stigmatization and exclusion that the “phobia” moniker aims to isolate and oppose. My comparative purpose is to draw into relief—to make explicit and subject to critical analysis—features of normative public discourse in these two sociopolitical contexts broadly perceived to be peaceful, prosperous, liberal-democratic. The features I focus on function under the auspices of tolerant and nonexclusionary forms of “civic nationalism” that, in effect, fuel the conflict in question.
Nationalism and the Comparative Study of Religious Ethics Future Trajectories
Authors: Omer Atalia 
Published: July 2015

AbstractDavid Little's work on ethnoreligious nationalism and religion, human rights, and the practice of religious peace-building offers both an important corrective and a conceptual foundation for further research in comparative religious ethics and an effective contribution to the sociological and cultural study of religion, conflict, and peace. Examining the two cases of Jewish Israeli settlers and Jewish American Palestine solidarity activists, the article establishes the centrality of nationalism and the institutions and practices it authorizes as well as the relevance of religious formations, reasoning, meanings, and practices within this context.
Quantifying the impacts of climate change and ecological restoration on streamflow changes based on a Budyko hydrological model in China's Loess Plateau
Authors: Liang Wei , Bai Dan , Wang Feiyu , Fu Bojie , Yan Junping , Wang Shuai , Yang Yuting , Long Di , Feng Minquan 
Published: July 2015

AbstractUnderstanding hydrological effects of ecological restoration (ER) is fundamental to develop effective measures guiding future ER and to adapt climate change in China's Loess Plateau (LP). Streamflow (Q) is an important indicator of hydrological processes that represents the combined effects of climatic and land surface conditions. Here 14 catchments located in the LP were chosen to explore the Q response to different driving factors during the period 1961–2009 by using elasticity and decomposition methods based on the Budyko framework. Our results show that (1) annual Q exhibited a decreasing trend in all catchments (−0.30 ∼ −1.71 mm yr−2), with an average reduction of −0.87 mm yr−2. The runoff coefficients in flood season and nonflood season were both decreasing between two periods divided by the changing point in annual Q series; (2) the precipitation (P) and potential evapotranspiration (E0) elasticity of Q are 2.75 and −1.75, respectively, indicating that Q is more sensitive to changes in P than that in E0; (3) the two methods consistently demonstrated that, on average, ER (62%) contributing to Q reduction was much larger than that of climate change (38%). In addition, parameter n that entails catchment characteristics in the Budyko framework showed positive correlation with the relative area of ER measures in all catchments (eight of them are statistically significant with p < 0.05). These findings highlight the importance of ER measures on modifying the hydrological partitioning in the region. However, ER actions over the sloping parts of the landscape weakened the impact of those in channels (i.e., check‐dams) on Q, especially after the implementation of the Grain‐for‐Green project in 1999.
A Bayesian, multivariate calibration for Globigerinoides ruberMg/Ca
Authors: Khider D. , Huerta G. , Jackson C. , Stott L. D. , Emile‐Geay J. 
Published: July 2015

AbstractThe use of Mg/Ca in marine carbonates as a paleothermometer has been challenged by observations that implicate salinity as a contributing influence on Mg incorporation into biotic calcite and that dissolution at the sea‐floor alters the original Mg/Ca. Yet, these factors have not yet been incorporated into a single calibration model. We introduce a new Bayesian calibration for Globigerinoides ruber Mg/Ca based on 186 globally distributed core top samples, which explicitly takes into account the effect of temperature, salinity, and dissolution on this proxy. Our reported temperature, salinity, and dissolution (here expressed as deep‐water
) sensitivities are (±2σ) 8.7±0.9%/°C, 3.9±1.2%/psu, and 3.3±1.3%/μmol.kg−1 below a critical threshold of 21 μmol/kg in good agreement with previous culturing and core‐top studies. We then perform a sensitivity experiment on a published record from the western tropical Pacific to investigate the bias introduced by these secondary influences on the interpretation of past temperature variability. This experiment highlights the potential for misinterpretations of past oceanographic changes when the secondary influences of salinity and dissolution are not accounted for. Multiproxy approaches could potentially help deconvolve the contributing influences but this awaits better characterization of the spatio‐temporal relationship between salinity and δ18Osw over millennial and orbital timescales.
Source and seed populations for relativistic electrons: Their roles in radiation belt changes
Authors: Jaynes A. N. , Baker D. N. , Singer H. J. , Rodriguez J. V. , Loto'aniu T. M. , Ali A. F. , Elkington S. R. , Li X. , Kanekal S. G. , Claudepierre S. G. , Fennell J. F. , Li W. , Thorne R. M. , Kletzing C. A. , Spence H. E. , Reeves G. D. 
Published: July 2015

AbstractStrong enhancements of outer Van Allen belt electrons have been shown to have a clear dependence on solar wind speed and on the duration of southward interplanetary magnetic field. However, individual case study analyses also have demonstrated that many geomagnetic storms produce little in the way of outer belt enhancements and, in fact, may produce substantial losses of relativistic electrons. In this study, focused upon a key period in August–September 2014, we use GOES geostationary orbit electron flux data and Van Allen Probes particle and fields data to study the process of radiation belt electron acceleration. One particular interval, 13–22 September, initiated by a short‐lived geomagnetic storm and characterized by a long period of primarily northward interplanetary magnetic field (IMF), showed strong depletion of relativistic electrons (including an unprecedented observation of long‐lasting depletion at geostationary orbit) while an immediately preceding, and another immediately subsequent, storm showed strong radiation belt enhancement. We demonstrate with these data that two distinct electron populations resulting from magnetospheric substorm activity are crucial elements in the ultimate acceleration of highly relativistic electrons in the outer belt: the source population (tens of keV) that give rise to VLF wave growth and the seed population (hundreds of keV) that are, in turn, accelerated through VLF wave interactions to much higher energies. ULF waves may also play a role by either inhibiting or enhancing this process through radial diffusion effects. If any components of the inner magnetospheric accelerator happen to be absent, the relativistic radiation belt enhancement fails to materialize.
Contribution of the phase transition of Pacific Decadal Oscillation to the late 1990s' shift in East China summer rainfall
Authors: Zhu Yali , Wang Huijun , Ma Jiehua , Wang Tao , Sun Jianqi 
Published: July 2015

AbstractBased on our previous study, the interdecadal changes in summer rainfall over East China in the late 1990s are further explored here. The increased local rising motion is implicated as the dominant factor of increased rainfall in the lower Huang‐Huai River valley (LHR). Both the observation and numerical experiments using Community Atmosphere Model, version 4 suggest that the negative Pacific Decadal Oscillation (PDO) mode can result in rising anomalies and thus more rainfall in the LHR. The East Asian westerly jet stream (EAWJS) is suggested as a bridge to link the Pacific sea surface temperature anomalies and East Asian summer rainfall. Model results reveal that the negative PDO mode can lead to significant easterly anomalies over East Asia. As a result, the EAWJS is weakened and shifts poleward, which coincides with observed changes in EAWJS after the late 1990s. In addition, weakened and poleward shifted EAWJS can result in an anomalous ascending motion to its south (in the LHR) by modulating the jet‐related secondary meridional‐vertical circulation. Consequently, rainfall increased in the LHR after the late 1990s. Besides, the positive Atlantic Meridional Oscillation can only induce insignificant changes over East Asia and partly counteract the negative PDO effect there.