bluuebunny/crossref_metadata_2025 huggingface dataset:
A Dynamic Pricing Game Investigating The Interaction Of Price And Quality On Sales Response
Authors: Jackson Eric C. , Narasimhan Ram
Published: February 2016

There is some question as to whether or not consumers use price as an indicator of product quality. In the case of non-durable goods there is some evidence that consumers do equate higher price products with higher quality products. These products are those that the consumer must experience personally before making a judgment on the product quality. In the case of durable goods there is less empirical evidence to support the price-quality connection. This paper develops a dynamic game model to investigate the price-quality connection in the presence of competition.  Specifically, the paper investigates whether or not the optimal pricing strategy in the case of a durable good, where consumers may collect quality information about the product as units diffuse into the market, should be a high quality-high price strategy or a high quality-low price strategy. This question is examined by means of a dynamic game model, which is an extension of the Narasimhan-Ghosh-Mendez (NGM) quality diffusion model. The paper explicitly incorporates competition into the NGM model. Price trajectories for two competing firms are derived so that profits are maximized for the two competitors. It is shown that the price trajectory for the firm using quality as a strategic lever is shown to be lower than that of the firm that was not using a quality strategy. This result strongly suggests that a firm pursuing a quality strategy should couple this strategy with a lower price than its competition and should not couple high prices with high quality in an effort to signal the product’s superior quality to consumers. 
Bundling Strategy For A Follower
Authors: Chang Ming-Chung
Published: February 2016

A follower in a market always uses a bundling strategy as a marketing strategy to increase profit and to change its market status.  In this paper, the relationship between the main goods and bundling goods is substitutive, independent, or complementary.  A Stackelberg game is applied to capture the competitive relationship between a leader and a follower.  A follower uses a bundling strategy as a marketing strategy, but a leader does not.  This study reveals that a follower will become a leader when he (or she) sells two products that are low substitution goods.  However, it induces a social welfare to decrease when a follower bundles goods.  This paper illustrates that a bundling action can invert a follower’s market status.  However, the inversion on a follower’s status does not promote the social welfare.
The Second Round Of G3 Reports: Is Triple Bottom Line Reporting Becoming More Comparable?
Authors: Sherman W. Richard , DiGuilio Lauren
Published: February 2016

This paper explores the extent to which adoption of the Global Reporting Initiative’s G3 reporting framework makes the external reporting of a company’s financial, environmental and social performance more comparable. This inquiry takes the form of analyzing the content of the published sustainability reports of well-known companies to compare and contrast the information communicated in these reports.  Particular attention will be paid differences in the published content of the second round of G3 reports between companies in the pharmaceutical industry.
An Internal Control Evaluation Tool For Advertising Revenue In The Newspaper And Magazine Publishing Industry
Authors: Orchard Lou X.
Published: February 2016

Even before the recent economic downturn, the newspaper and magazine publishing industry had been experiencing unprecedented change, with some companies facing an immediate need to either invent a new business model or else cease operations.  The current economic slowdown has, in many cases, exacerbated those challenges.  These trends have had the effect of increasing the risk of fraudulent financial reporting.  The revenue cycle continues to be one of the most important areas for auditors to examine for possible fraud and one for which strong, comprehensive internal controls are especially important (AICPA 2002).  This paper presents an internal control review checklist for advertising revenue in the newspaper and magazine publishing industry.  This checklist may be used by independent auditors as a general benchmark in performing a preliminary evaluation of a company’s internal controls over advertising revenue.  In instances where important internal controls on the checklist have been omitted from the client’s system, the auditor should consider whether the omission increases audit risk.  The checklist may also be used by CFOs or controllers in the industry to help determine whether their company’s internal control system is adequate.
The Composition Of Corporate Boards Of Directors: Pre- And Post-Sarbanes-Oxley
Authors: Marlin Dan , Geiger Scott W.
Published: February 2016

The purpose of this study is to examine corporate board characteristics pre- and post-Sarbanes-Oxley.   More specifically, using a sample 1141 US publicly traded firms, board characteristics were identified and then changes in these characteristics were examined across the years 2001, 2004, and 2007.  Our analyses reveal significant changes in 8 of 10 board characteristics examined.  Implications and areas for future research are discussed.
Average Conditional Volatility: A Measure Of Systemic Risk For Commercial Banks
Authors: Sankaran Harikumar , Saxena Manish , Erickson Christopher A.
Published: February 2016

We propose using the cross-sectional (daily) average conditional volatility of commercial bank stock returns as a measure of systemic risk for the U.S. banking industry. The performance of this measure is tested using data from the 2008 pre-crisis period. The measure is shown to incorporate individual bank risk as well as the cumulative riskiness of a cross-section of banks. Cross-sectional regressions indicate that individual bank’s probability of default is unrelated to the bank’s conditional volatility during times of low, industry wide risk (as measured by average conditional volatility). However, the bank’s conditional volatility significantly affects its probability of default when the industry is experiencing a high level risk. Regardless of the industry level risk, a bank’s probability of default has a significant negative relation with its capital adequacy (as measured by the proportion of equity capital). Additionally, at an aggregate level, Granger causality tests indicate that the conditional volatility of ‘big’ banks causes the riskiness of medium and small banks to increase.
The Relationship Between Learning Orientation And Business Performance And The Moderating Effect Of Competitive Advantage: A Service Organization Perspective
Authors: Martinette Louis A. , Obenchain-Leeson Alice
Published: February 2016

This study examines the influence of learning orientation on business performance (the achievement of sales and profit objectives) in the context of pure service. The conceptual framework used in this research has been drawn from marketing, finance, and organizational behavior theory. Specifically, relationships related to learning orientation, sources of competitive advantage, and business performance have been identified. This research develops and tests a framework about learning orientation and its consequences in an organization. Specifically, this study focused on several research questions, including: 1)Is there a relationship between learning orientation and business performance in terms of the achievement of sales and profit objectives in pure service and service-reliantorganizations?, 2) Is there a relationship between learning orientation and competitive advantage in pure service and service-reliant organizations?, and 3) Does competitive advantage moderate the relationship between learning orientation and business performance in pure service and service-reliant organizations?A survey-based research methodology is used to explore these research questions and pertinent findings reported in the light of previous studies (Martinette, 2006, Martinette and Obenchain-Leeson, 2010).The findings of this study suggested that competitive advantage moderates the relationship between learning orientation and business performance in pure service and service-reliant organizations.
Cybersecurity Service Model
Authors: Katzan, Jr. Harry
Published: February 2016

The efficacy of modern computer systems is normally regarded as a function of five basic attributes of computer and information security: availability, accuracy, authenticity, confidentiality, and integrity. The concepts generally apply to government, business, education, and the ordinary lives of private individuals. The considerations normally involve extended applications of the Internet hence the name Cybersecurity. Achieving and maintaining a secure cyberspace is a complicated process, and some of the concerns involve personal identity, privacy and intellectual property, secure maintenance of the critical infrastructure, and the sustainability of organizations. The threats to a secure operating infrastructure are serious and profound: cyber terrorism, cyber war, cyber espionage, and cyber crime, to which the technical community has responded with a plethora of ad hoc safeguards and procedures, usually supplied by the competitive private sector. This paper proposes a fresh view of the cyber domain based on service science with the ultimate objective of developing a cybersecurity service model.
Impact Of Leadership Styles On Employee Organizational Commitment
Authors: Clinebell Sharon , Skudiene Vida , Trijonyte Renata , Reardon James
Published: February 2016

This research study examines the relationship between transformational, transactional and passive/avoidant leadership styles and three dimensions of organizational commitment – affective, continuance, and normative in two subsidiaries of one multinational organization. The research findings revealed that transformational leadership has the strongest impact on affective commitment, although transactional leadership also affects affective commitment. Transformational leadership also has a significant positive affect on normative commitment. Transactional leadership has a significant positive affect on continuance commitment and positive/avoidant leadership has a significant negative affect on affective commitment.
Dynamic Access Control For Information Technology Service Management
Authors: Katzan, Jr. Harry
Published: February 2016

Prominent services in the operational portfolio of enterprise information systems are facilities designed to promote information sharing while maintaining control over the integrity and privacy of information. Many organizations employ identity management and authentication for access, and then partition the application domain so that a separate access facility is required for each system. Simple access control lists are used for access control, so flexibility and information sharing is cumbersome and inefficient, often leading to a state where design objectives are easily compromised. A new and groundbreaking service is on the horizon. With dynamic access control employing the new Attribute Based Access Control (ABAC) system, a highly effective means of information sharing, based on the use of attributes, can be achieved, while enhancing efficiency and efficacy among enterprise agencies. This paper provides an introduction to this important service as it applies to federal and non-federal organizational structures.
The Market-Oriented And Integrative Management Model For Successful Internationalisation Of Vocational Education And Training Services
Authors: Mewaldt Andrea
Published: February 2016

Export of VET services has become the rapidly growing business field within the service sector. Austria and Germany traditionally run the vocational education and training (VET) by the so-called Dual Apprenticeship System, the public-private co-management of employers and public vocational schools. Both countries promote VET internationalisation, and VET service providers seek for respective management strategies. This paper contributes to the question How do VET providers successfully internationalise?As finding the paper presents the market-oriented and integrative management model for VET internationalisation into emerging markets. The explorative study applied the market-oriented innovation management research method that was chosen to highlight the paradigm shift in VET internationalisation towards market-orientation. Moreover, the method strongly involves the users view what is is in compliance with latest value creation and value co-creation theories in service management.
Compuestos Volátiles Producidos in Vitro por Callos de Solanum quitoense Lam. (Solanaceae)
Authors: Duarte-Hernández A. M. , Núñez K. M. , Pacheco J. C. , Martínez J. J.
Published: February 2016

En la búsqueda de fuentes no convencionales para la obtención de compuestos volátiles se ha recurrido a la
biotecnología vegetal. Este estudio describe el efecto de diferentes concentraciones de ácido naftalén-acético (ANA), usado en la inducción de callos de Solanum quitoense Lam., sobre la producción de compuestos volátiles. A partir de callos cultivados durante 30, 40 y 50 días se evaluó, por cromatografía de gases acoplada a espectrometría de masas (CGAR-EM), la composición volátil de los compuestos extraídos
mediante microextracción en fase sólida (MEFS) o extracción líquida-líquida; los resultados muestran la
presencia de 30 compuestos volátiles, en los que se destacan notas sensoriales a verde y dulce.

Palabras clave: Callos, Solanum quitoense Lam., Compuestos volátiles, Lulo, Naranjilla.
Riqueza y Distribución Altitudinal de Gramíneas C3 y C4 en la Guayana Venezolana
Authors: Giraldo-Cañas D.
Published: February 2016

Se estudiaron la riqueza de especies y el patrón de distribución altitudinal de las gramíneas C3 y C4 en la
Guayana venezolana. Las gramíneas están representadas en el gradiente altitudinal por 411 especies, de las cuales, 170 presentan la vía fotosintética C3, y 241, la C4. Las gramíneas C3 y C4 están más diversificadas en las tierras bajas, no obstante, las C3 exhiben un patrón particular; así, en las tierras bajas se distribuyen ecológicamente en hábitats sombreados (sotobosques). En las tierras altas, las especies C3 desplazan a las C4, que están mínimamente representadas. El patrón de distribución altitudinal de las gramíneas C3 y C4 sigue la regla de Rapoport.

Palabras clave: Diversidad en gradientes altitudinales, Gramíneas C3 y C4, Flora de la Guayana, Gramíneas neotropicales, Regla de Rapoport.
Método no invasivo de diagnóstico de gestación en venadas Odocoileus virginianus. (Non-Invasive Method for Pregnancy Diagnosis in Odocoileus Virginianus.)
Authors: Cervera Hernández P. , Montes Pérez R. C. , Victoria Arceo F. , Camacho Reyes J. , Castillo López I. F.
Published: February 2016

ResumenObjetivo: Valorar la eficiencia del diagnóstico de gestación mediante la estimación de niveles de progestinas fecales en venadas cola blanca O. virginianus en la época no reproductiva. Materiales y métodos: Se analizaron muestras sanguíneas y heces de nueve venadas cola blanca (VCB), semanalmente, durante dos meses en la época reproductiva. Adicionalmente, las VCB fueron expuestas a macho durante un mes durante la época reproductiva, y se colectaron heces dos veces fuera de esta, para medir los niveles de metabolitos de progestinas. Se determinó el valor de corte para diagnosticar gestación a partir de los niveles de metabolitos de progestinas fecales en fase luteal y folicular. La progesterona sanguínea fue medida por radioinmunoanálisis, y se correlacionó con los niveles de progestinas fecales. Los diagnósticos de gestación fueron relacionados con los partos. Resultados: La correlación total entre niveles de progestinas sanguíneas y metabolitos de progestinas fecales fue 0,37 (p<,0,01). La variación de la correlación individual fue 0,104 hasta 0,99. El valor de corte para diagnosticar gestación fue 4000 ng/g en heces. La eficiencia del diagnóstico de gestación fue 77,78%, el valor predictivo del diagnóstico positivo fue 75%, y el negativo fue 80%, respectivamente. Conclusiones: Es posible diagnosticar gestación fuera de la época de reproducción mediante la estimación de los niveles de metabolitos de progestinas fecales, en VCB en cautiverio, tomando como valor de corte 4000 ng/g de heces. AbstractObjective: To value the eciency of pregnancy diagnosis by estimating levels of fecal progestins inwhite-tailed deer O. virginianus outside the reproductive season. Materials and methods: Blood and feces samples of nine White tailed-deer (WTD) were analyzed weekly for two months in reproductive season. Additionally WTD were exposed to a male during a month in reproductive season and feces were collected twice in non-reproductive season, in order to estimate progestins metabolites levels. The cut value for pregnancy diagnosis from levels of fecal progestins metabolites in luteal and follicular phases of WTD, was determined. Blood progesterone levels were measured by radioimmuno analysis and were correlated with the fecal progestins levels. Pregnancy diagnosis was related with the deliveries. Results: Total correlation coecient between blood progestins levels and fecal metabolites progestins was 0.37 (p<,0.01). Individual correlation coecient variation was 0.104 to 0.99. Cut o value for pregnancy diagnosis was 4000 ng/g in feces. Eciency for pregnancy diagnosis was 77.78%, predictive positive value was 75% and the negative was 80% respectively. Conclusions: It is possible to carry out pregnancy diagnosis in non-reproductive season, through quantification of fecal progestin metabolites levels, in WTD in captivity, taking as cut value 4000 ng/g feces.
Análisis de termografías infrarrojas dinámicas mediante técnicas de procesamiento de imágenes. (Analysis of Dynamic Infrared Thermographies through the Application of Image Processing Techniques.)
Authors: Pencue Fierro E. L. , Bravo Montenegro D. A. , Patiño Velasco M. M.
Published: February 2016

ResumenEl acceso a imágenes fuera del espectro visible ha abierto grandes posibilidades para la caracterizaciónde procesos y materiales en muchas áreas de la actividad humana, particularmente, las termografías sonnotablemente útiles en el estudio del comportamiento de los fenómenos de propagación del calor, en estecaso, los análisis se han limitado a verificar distribuciones de calor en un momento dado y solo estáticamente. El enlace temporal de las isotermas y de los centros de generación del calor permite obtener información de carácter dinámico y realizar análisis más completos sobre el comportamiento de los equipos o materiales bajo estudio. En este trabajo se presentan los resultados de aplicar técnicas de análisis de secuencias de imágenes a termografías de diferentes procesos, se demuestra que con ellas se logra un entendimiento más preciso del comportamiento del calor al circular por los objetos, de cómo sus fuentes y sumideros asimilan diferentes condiciones y de la evolución general de flujos constantes o variables de perfiles de temperatura.  AbstractAccess to images out of visible spectrum range has opened a wide field of possibilities for processes and material characterization in many areas of human activity. Thermography is particularly useful in analyzing the behavior of heat propagation phenomena. In this case, the analysis has been limited to verify the heat distribution at a given time, it means, the static aspect of the phenomena. The temporary connection of isotherms and heat generation areas can yield dynamic information that enables a more comprehensive analysis of equipment or materials behavior of interest. This paper presents the results obtained from the application of analytical techniques in dierent processes of some image sequences. The results show that it achieves a more precise understanding of the heat behavior circulation through the objects, it also reveals how sources and sinks assimilate the dierent conditions and the temperature profiles trends of constant or variable flow’s general evolution.
Determinación de acrilamida en el procesamiento de la panela por cromatografía líquida
Authors: Vargas Lasso, J. J. , Talero Pérez Y. V. , Trujillo Suárez F. A. , Camelo Caballero L. R.
Published: February 2016

Se evaluó una nueva metodología para detectar y cuantificar la formación de acrilamida en las etapas de
producción de la panela. Los datos de esta investigación contribuyen al control de calidad de la panela,
particularmente en la evaluación del riesgo químico asociado a este producto de uso popular, en beneficio
primordial del sector agroalimentario y de la calidad. La técnica de análisis empleada fue la cromatografía
líquida de alta eficiencia en fase reversa, y el método de cuantificación empleado fue el estándar externo,
para lo cual se construyó una curva de calibración. Se halló que en el jugo de caña no se forma acrilamida,
pero a medida que aumenta el tiempo y la temperatura (reacción de Maillard) se evidencia su presencia,
encontrándose en el producto final 2.0 mg/kg; se pudo, en consecuencia, establecer la efectividad de la
cuantificación por este método analítico; para la verificación y confirmación del contenido de acrilamida,
información útil para evaluar la autenticidad del producto final.
Estudio teórico de las reacciones Diels-Alder utilizando plantillas de antraceno a través del uso de orbitales de frontera
Authors: Vivas Reyes R. , Cardozo K. M. , Oviedo J. F.
Published: February 2016

Se realizaron una serie de cálculos teóricos aplicados a una reacción de Diels-Alder, en los que se usaron una serie de plantillas de antraceno quiral y unos dienófilos derivados del anhidro maleico y maleimidas. Los cálculos fueron hechos con la ayuda del programa Gaussian 98, usando la funcional B3LYP junto con la base de cálculo 3-21G*. Con estos resultados fue posible analizar esta serie de compuestos, calculando su estabilidad energética y geometría, además de analizar el impacto que tienen sobre su reactividad los orbitales frontera HOMO y LUMO cuando los sustituyentes varían para una serie de plantillas y dienófilos. La energía de los orbitales frontera fue analizada y se pudo concluir que la reacción estudiada era del tipo de Diels-Alder de demanda normal de electrones y que los sustituyentes son importantes en el aumento de la reactividad de la reacción, encontrándose que el dieno, en este caso la plantilla de antraceno, hace aumentar la energía de los orbitales frontera cuando se encuentra unida a un sustituyente donante de electrones, y en cuanto a los dienófilos, se encontró que cuando se encuentran unidos a un sustituyente atractor de electrones, esto trae como consecuencia que se disminuya la energía de los orbitales frontera HOMO y LUMO. Respecto a la geometría de los orbitales frontera, se encontró que brinda información acerca de la estereoselectividad de la reacción, en donde el principio de conservación de la simetría orbital es el que rige la orientación de los sustituyentes en la reacción, en la cual se concluyó que para dienófilos sustituidos se observó que estos quedan orientados en la cara opuesta del centro estereogénico de la plantilla para este tipo de moléculas.
Aplicación de métodos compuestos en la estimación de las entalpías de formación de compuestos peróxidos ROOR’ (R, R’= H, F, Cl y NO)
Authors: Buendía Atencio C. , Vivas Reyes R. , Gómez Castaño J. A. , Lorett Velásquez V. P.
Published: February 2016

Diversos métodos compuestos de alto nivel en química cuántica, tales como las teorías Gaussian-n y
Weizmann-n, han sido empleados para estimar las entalpías de formación de contaminantes atmosféricos
peroxídicos a partir de energías de atomización totales y de esquemas de reacciones isodésmicas. Los
valores estimados para la Ho f ,298K de HOOH, HOOF, HOOCl, HOONO, FOOF, FOOCl, FOONO, ClOOCl
y ClOONO son −32,2±0,8; −10,9±1,1; −8,4x10−2±1,2; −2,9±0, 7; 8,4±1,6; 21,5±1,3; 19,7±1, 3;
32,3±1,4 y −31,3±0,8 kcal mol−1, respectivamente. Una comparación entre los valores experimentales
existentes y los valores teóricos obtenidos es presentada en este trabajo, destacando la alta precisión química con un bajo costo computacional.
Evaluación del crecimiento y compatibilidad de hongos de la podredumbre blanca
Authors: Rojas Barreto J. A. , Hormaza Anaguano A.
Published: February 2016

El uso de hongos de la podredumbre blanca (HPB) ha generado un gran interés debido a su potencial
enzimático, permitiendo a estos organismos degradar una amplia gama de compuestos xenobióticos. Los
consorcios fúngicos pueden mejorar dichos procesos de degradación con respecto a los monocultivos y para
su asociación debe establecerse previamente su compatibilidad. En este trabajo se evaluó la influencia de dos condiciones nutricionales sobre el crecimiento y la compatibilidad entre tres especies de los HPB, Trametes versicolor, Pleurotus ostreatus y Pleurotus pulmonarius, para su futura utilización como consorcios en el tratamiento de contaminantes orgánicos. Discos de dos especies de los hongos evaluados crecieron por siete días sobre los medios de cultivo agar papa dextrosa (PDA) y agar salvado de trigo (AST). Se evaluaron tres tratamientos, T1: T. versicolor vs P. ostreatus, T2: T. versicolor vs P. pulmonarius y T3: P. ostreatus vs P. pulmonarius con sus respectivos controles (crecimiento libre). El porcentaje de inhibición micelial obtenido (< 70%) mostró compatibilidad entre los hongos evaluados en los distintos tratamientos bajo las condiciones nutricionales utilizadas. Con respecto a la tasa de crecimiento, se observó que el medio AST favoreció un rápido desarrollo para los tres hongos en comparación con PDA.
Análisis de metales pesados en suelos irrigados con agua del río Guatiquía
Authors: Ramírez Niño M. Á. , Navarro Ramírez M. Á.
Published: February 2016

En este trabajo se analizaron muestras de suelos usados principalmente para el cultivo de arroz, en la vereda La Esperanza, del municipio de Villavicencio; estos suelos son irrigados con aguas del río Guatiquía, que atraviesa la ciudad de Villavicencio. Se tomó como base para la extracción y cuantificación de metales en suelos la metodología descrita en la Norma Técnica Colombiana 3388 y 3934, respectivamente. Dado que actualmente en Colombia no se tiene determinado el nivel de referencia para la concentración de metales en el suelo, se utilizó una norma internacional para poder determinar el grado de contaminación de los suelos. Los resultados obtenidos mostraron que las concentraciones de los metales analizados (cadmio, cobre, plomo, níquel y zinc) se encuentran por debajo de los parámetros internacionales permitidos. Este estudio es uno de los primeros avances en la determinación del nivel de referencia de estos metales en suelos de uso agrícola en la región de la Orinoquía.
Efecto del ruido del tráfico vehicular en cantos de Hylophilus flavipes y Cyclarhis gujanensis
Authors: Pacheco-Vargas G. , Losada-Prad S.
Published: February 2016

La hipótesis de adaptación acústica ha justificado que la estructura del hábitat y la intervención antrópica
son factores que influyen en la variación de las vocalizaciones de las aves. Este estudio estimó el efecto
del ruido del tráfico vehicular sobre las vocalizaciones de Hylophilus flavipes y Cyclarhis gujanensis. Se
efectuaron transectos paralelos a carreteras en dos localidades del bosque seco tropical del departamento
del Tolima; se realizó la grabación de sus cantos y la medición de la intensidad de ruido emitido por los
vehículos. Se encontró que H. flavipes y C. gujanensis emiten cantos con una frecuencia mínima mayor
cuando se encuentran en lugares donde la intensidad del ruido está por encima de los 40 dB. Así mismo, H. flavipes genera cantos con una menor duración de notas y una mayor duración entre notas, y tiende a cantar con menor número de notas cuando se ubican cerca de la carretera. Además, la última nota de los cantos de C. gujanensis tiende a ser más duradera bajo estas condiciones. Este estudio permitió determinar una variación en las vocalizaciones de las dos especies ante este factor, evidenciándose una respuesta mayor en H. flavipes que en C. gujanensis.
Continuidad en estructuras débiles generalizadas
Authors: Ávila J. , Molina F.
Published: February 2016

En este trabajo se hace un estudio de la continuidad en Estructuras Débiles Generalizadas (EDG), introduciendo la versión local y global de la misma. Además de mostrar varias caracterizaciones, extendemos varios resultados clásicos de topología, topologías generalizadas y estructruas minimales relacionados con axiomas de separación.
Estudio del comportamiento e impacto de la climatología sobre el cultivo de la papa y del pasto en la región central de Boyacá empleando los sistemas dinámicos
Authors: Sepúlveda Delgado O. , Suárez Aguilar Z. E. , Patarroyo Mesa M. , Bautista Díaz S. , Canaria Camargo L. C.
Published: February 2016

En este artículo se presenta el análisis del comportamiento de las condiciones climatológicas que inciden en
el fenómeno de la evaporación y transpiración de los cultivos de papa y pasto en la región circundante a
la estación climatológica ubicada en la Universidad Pedagógica y Tecnológica de Colombia, UPTC, para
determinar el balance hídrico entre las necesidades de agua y la precipitación registrada en todas las posibles cosechas del primero, segundo semestre y de la cosecha única en el año, periodo: 2003−2013. A partir de los balances hídricos se hacen inferencias de las fechas que registraron las condiciones climatológicas más favorables para el cultivo. Se analiza el caos en la serie de la evapotranspiración del cultivo bajo condiciones estándar, ETC, aplicando la teoría de los exponentes de Lyapunov para dar conclusiones sobre el comportamiento del clima y su incidencia en la agricultura y la ganadería. 
Discretización en diferencias finitas de la ecuación de Laplace y Poisson. Aplicación a un anillo circular (dona)
Authors: Méndez Moreno L. M. , Orozco Hernández G. , Fonseca F.
Published: February 2016

Entre los métodos de solución numérica más comunes para ecuaciones diferenciales parciales (EDP) se
encuentran el método de las diferencias finitas y el método de los elementos finitos, que se acercan a la
solución real a través de un algoritmo de convergencia de manera eficiente y acertada. Muchos de los
fenómenos físicos que se pueden estudiar mediante estas técnicas obedecen su comportamiento a las EDP’s de Laplace y de Poisson, sobre las que se pueden restringir diferentes condiciones iniciales y de frontera, para limitar las soluciones de la ecuación. Este trabajo muestra la aplicación del método de diferencias finitas con un manejo sencillo de la discretización del dominio y, así mismo, un manejo sencillo de las condiciones de frontera sobre varios dominios, principalmente sobre dominios del tipo anillo o “dona”, mostrando resultados interesantes al seleccionar condiciones de frontera del tipo Dirichlet.
Experiencias en un modelo con material instruccional en línea centrado en el aprendizaje
Authors: Martinez García Mario
Published: February 2016

Por su misma naturaleza, el éxito en la formación universitaria depende de varios actores y factores, cuyo desempeño facilita o inhibe el aprendizaje. La relación pedagógica en los cursos presenciales optimizados que se apoyan en las tecnologías- modelo desarrollado en el Centro Universitario de los Valles (en adelante CU Valles) es afectada por el medio y el contexto de la institución. La calidad de la interacción no solo de los actores centrales del proceso de aprendizaje, estudiantes y profesores, sino también de la misma tecnología, el dispositivo pedagógico utilizado, el apoyo recibido (técnico, académico y social) así como el tiempo dedicado, el lugar y el equipo de trabajo, es decisiva para el buen desarrollo de un curso en línea en este trabajo. La propuesta contempla la implementación de espacios de gestión de la información y del aprendizaje en línea (Material Instruccional en Línea, en adelante MIEL) y la instalación de espacios equipados con equipo de cómputo y con acceso a Internet en las localidades de la región denominados Comunidades de Aprendizaje y Servicios Académicos (en adelante CASAS Universitarias).
Presentación
Authors: Sánchez-Rivas Enrique
Published: February 2016

Presentación del primer número de la revista Innoeduca
La Inteligencia Emocional como predictora del Rendimiento Académico: el contexto pluricultural de Ceuta
Authors: Pulido Acosta Federico , Herrera Clavero Francisco
Published: February 2016

Este trabajo tiene como objetivo fundamental conocer los predictores dela Inteligencia Emocional (IE) y el Rendimiento Académico (RA) del alumnado de la ciudad de Ceuta, para lo que se contó con 1186 participantes, de 9 centros educativos distintos, que reflejan la pluriculturalidad de la ciudad; de los cuales, el 57.8% son mujeres y el 42.2% varones, y el 58.9% de cultura/religión musulmana y el 41.1% cristianos. Como instrumentos de evaluación se emplearon una adaptación propia del MSCEIT (Test de Inteligencia Emocional de Mayer, Salovey y Caruso, 2009) y las calificaciones de los alumnos. Los resultados obtenidos reflejan niveles medios de Rendimiento Académico, y medio-altos en IE, actuando como predictores del primero las variables sociodemográficas de edad, género, cultura/religión y estatus socio-económico-cultural. Los predictores de la Inteligencia Emocional son la etapa y el estatus. Por otra parte, muestran que existe relación entre Inteligencia Emocional y Rendimiento Académico, actuando cada una como principal predictor de la otra.
Diagnostic and Management Strategies for Multiligament Knee Injuries
Authors: Burrus M. Tyrrell , Werner Brian C. , Griffin Justin W. , Gwathmey F. Winston , Miller Mark D.
Published: February 2016

➢ Multiligament knee injuries have a strong association with periarticular soft-tissue and neurovascular injuries, which must not be overlooked in the initial evaluation of the patient.

➢ Even though magnetic resonance imaging (MRI) is imperative for a complete evaluation of the damaged ligamentous knee restraints, stress radiography aids in establishing the functional consequence of the MRI findings and may assist in directing reconstruction.

➢ Although cruciate ligament tears are generally reconstructed, a combined repair-reconstruction approach is most useful for collateral ligaments and extra-articular structures, with incorporation of local tissue into the reconstruction whenever possible.

➢ Regardless of the timing and operative technique chosen, patients with multiligament knee injuries are at high risk for complications and long-term disability.
Investigation of the Conditions Required for Improved Oil Recovery by an Earthquake
Authors: Uetani Takaaki , Matsuoka Toshifumi , Honda Hiromi
Published: February 2016

This study aims to clarify a phenomenological relationship between earthquakes and temporarily improved oil recovery for a small oil field located in a seismically active region of Japan. Our study concludes that the conditions required for an earthquake to temporarily improve oil recovery in this field are as follows:

An earthquake with a seismic intensity of at least 3 hits the well. The well experiences a decline in productivity, with a flowing wellhead pressure of less than 690 kPaa (100 psia). The corresponding skin factor lies within the range of 18 to 40. The well is producing oil from a reservoir.
Electrodialysis heterogeneous ion exchange membranes modified by SiO2 nanoparticles: fabrication and electrochemical characterization
Authors: Hosseini S. M. , Ahmadi Z. , Nemati M. , Parvizian F. , Madaeni S. S.
Published: February 2016

In the current study mixed matrix heterogeneous cation exchange membranes were prepared by solution casting technique. The effect of SiO2 nanoparticles in the polymeric solution on the physicochemical properties of prepared membranes was studied. Scanning optical microscope images showed uniform particle distribution and relatively uniform surfaces for the prepared membranes. The membrane water content was reduced by silica nanoparticles in the membranes' matrix. The membrane ion exchange capacity, membrane potential, transport number and selectivity were improved initially by an increase of SiO2 nanoparticles concentration up to 1%wt in prepared membranes and then showed a decreasing trend with a further increase in additive ratio from 1 to 4%wt. The ionic permeability and flux were also decreased initially by an increase of silica nanoparticles concentration up to 0.5%wt in the membrane matrix and then increased again with a further increase in nanoparticles concentration from 0.5 to 4%wt. Moreover, the results exhibited that using silica nanoparticles in the membrane matrix caused an obvious decrease in areal electrical resistance. The opposite trend was found for membrane mechanical strength using SiO2 nanoparticles.
Application performance of a new coagulant in wastewater reuse
Authors: Fu Ying , Wang Jingzhi , Wang Yanzheng , Lu Ningning
Published: February 2016

Ultraviolet (UV) absorption characteristics of poly-Al-Zn-Fe (PAZF), a polymerized coagulant containing three kinds of metallic elements prepared from a galvanized-aluminum slag, was analyzed by UV-visible spectrophotometry during its polymerization process. Pollutant removal by PAZF in treating various wastewaters was investigated, in comparison with that of polyaluminum chloride (PAC). The results showed that PAZF can be applied to different wastewaters and had excellent coagulation behavior due to its special internal composition. Various complicated substances having different absorption wavelengths and polymeric properties were produced during the PAZF polymerization process, and the structures of these complicated substances were adjusted continuously with the increasing of the polymerization time. PAZF posed better turbidity and organic matter (chemical oxygen demand, CODCr) removal than PAC for different wastewaters, and the required dosage of PAZF was far lower than that of PAC when achieving the same coagulation performance. For pharmaceutical, sugar, dyeing, simulated pesticide and landscape wastewaters, PAZF gave higher removal of turbidity or CODCr than PAC, by up to 79.5% (coagulant dose: 74 mg/L) or 16% (148 mg/L), 13.4% (111 mg/L) or 10% (185 mg/L), 26.5% (148 mg/L) or 8.1% (18.5 mg/L), 40% (18.5 mg/L) or 13.4% (111 mg/L), and 5% (70 mg/L) or 5% (70 mg/L), respectively.
Nitrification and denitrifying phosphorus removal in an upright continuous flow reactor
Authors: Reza Maryam , Alvarez Cuenca Manuel
Published: February 2016

Simultaneous nitrification and denitrifying phosphorus removal was achieved in a single-sludge continuous flow bioreactor. The upright bioreactor was aligned with a biomass fermenter (BF) and operated continuously for over 350 days. This study revealed that unknown bacteria of the Saprospiraceae class may have been responsible for the successful nutrient removal in this bioreactor. The successive anoxic–aerobic stages of the bioreactor with upright alignment along with a 60 L BF created a unique ecosystem for the growth of nitrifier, denitrifiers, phosphorus accumulating organisms and denitrifying phosphorus accumulating organisms. Furthermore, total nitrogen to chemical oxygen demand (COD) ratio and total phosphorus to COD ratio of 0.6 and 0.034, respectively, confirmed the comparative advantages of this advanced nutrient removal process relative to both sequencing batch reactors and activated sludge processes. The process yielded 95% nitrogen removal and over 90% phosphorus removal efficiencies.
Pre-Transplant Screening for Latent Adenovirus in Donors and Recipients
Authors: Piatti Gabriella
Published: February 2016

Human adenoviruses are frequent cause of slight self-limiting infections in immune competent subjects, while causing life-threatening and disseminated diseases in immunocompromised patients, particularly in the subjects affected by acquired immunodeficiency syndrome and in bone marrow and organ transplant recipients. Here, infections interest lungs, liver, encephalon, heart, kidney and gastro enteric tract. To date, human adenoviruses comprise 51 serotypes grouped into seven species, among which species C especially possesses the capability to persist in infected tissues. From numerous works, it emerges that in the recipient, because of loss of immune-competence, both primary infection, via the graft or from the environment, and reactivated endogenous viruses can be responsible for transplantation related adenovirus disease. The transplants management should include the evaluation of anti-adenovirus pre-transplant screening similar to that concerning cytomegalovirus. The serological screening on cytomegalovirus immunity is currently performed to prevent viral reactivation from grafts and recipient, the viral spread and dissemination to different organs and apparatus, and potentially lethal outcome.
The assessment of physiology parameters of willow plants as a criterion for selection of prospective clones
Authors: Rodzkin Aleh , Orlovic Sasa , Krstic Borivoj , Pilipovic Andrej
Published: February 2016

Bioenergy production based on short rotation coppice willow plantations (SRC)
is an effective direction both for economic and environment profit. The yield
of willow wood can amount to 10-15 tons per hectare of dry biomass per year
and the cost of thus obtained energy is lower in comparison with other energy
crops. In order to achieve high yield and profitability, the use of special
willow clones is necessary. Species most often used in selection for biomass
production are shrub type willows: Salix viminalis, Salix dasyclados and
Salix schwerini, while the clones tested in this paper were also of tree
species Salix alba. The productivity and some physiology characteristics of
Serbian selection clones of Salix alba (Backa, Volmianka and Drina) and
Swedish selection clone Jorr (Salix viminalis) were investigated in
greenhouses and in field conditions. As the result of testing three clones of
Salix alba - Backa, Volmianka and Drina, having special preferences and
adaptability to different environmental conditions, these were included in
State register of Republic of Belarus in 2013. In our experiment it was also
satisfactory that specific properties of willows (intensity of transpiration
and photosynthesis, water use efficiency and others), were conserved both in
greenhouses and in field conditions. This factor gives opportunity to select
prospective clones of willows at an early stage of ontogenesis for further
testing.
A new outbreak of brucellosis in Bulgaria detected in July 2015 – preliminary report
Authors: Nenova Rumiana , Tomova Iskra , Saparevska Raina , Kantardjiev Todor
Published: February 2016

During July 2015 a brucellosis outbreak was detected in Kyustendil district, west Bulgaria. As of 15 August, 31 patients have been diagnosed all with an epidemiological connection to Rila town. Patients have not travelled/worked abroad. Breeding family-owned goats and/or improper use of their milk appear to be the main risk factors for transmission of the infection. This second autochthonous brucellosis outbreak in Bulgaria since 2006, affects the western part of the country.
Roundabouts in Northern New England, 1990 to 2010
Authors: Belz Nathan P. , Aultman-Hall Lisa , Troy Austin
Published: February 2016

Roundabouts are still emerging but are becoming more common as an intersection type in the United States. There is considerable pushback from the public, however, making it difficult to implement roundabouts in certain places. This study aims to develop a better understanding of the factors related to roundabout opposition in three states: Maine, New Hampshire, and Vermont. The rejected and built roundabout locations were examined within the context of geography; spatial, temporal, physical, and societal factors were included. Results of the binary logistic regression model suggest that business density and percentage of residents 65 years old and older have the strongest positive association with the likelihood of a technically feasible roundabout being built. The strongest negative association with roundabout implementation is exposure as measured by time elapsed since the first successful roundabout in the state. Proximity to traffic circles and roundabouts does not have as strong a relationship with roundabout implementation as hypothesized. The methods used, especially the inclusion of nonbuilt roundabout locations, are recommended for future research. The findings reinforce the unique challenges facing roundabout proposals in different regions of the United States; three small and mostly rural states are specifically addressed.
Lazy Proust and Literary ‘Work’
Authors: Bray Patrick M.
Published: February 2016

One of the enduring clichés about Proust and his narrator in À la recherche du temps perdu is the image of an effete snob who wastes half his life in high society and spends the other half writing a self-indulgent autobiography. In popular culture, those who read Proust are thought to waste an almost inconceivable amount of time on a frivolous object of elitist culture, all the more so since only the rich can afford the leisure time to read 3500 pages of dense prose. Yet Proust's novel reveals the true nature of creative work. This search for lost time is in fact a manual for time regained – time stolen back from habit, from abstract intelligence, from the material conditions of labour (as Rancière might say). In the last volume of his novel, Proust discovers that the material for his book comes from his past life, acquired ‘dans les plaisirs frivoles, dans la paresse’. Only through a certain laziness, which would allow the narrator to absorb experience, can he then be receptive to the flow of time as duration. Literary work, for Proust, consists in undoing the ‘busy work’ of the everyday (the foundation of the Protestant work ethic) in order to make connections between the past and present sensations – to see the work of Time.
Work Avoidance: Idleness and Ideology in Turn-of-the-Century Utopian Fiction
Authors: White Claire
Published: February 2016

This article explores the political stakes of idleness in a range of turn-of-the-century utopian novels, all of which engage explicitly with socialist and anarchist discourses: Paul Adam's Les Cœurs nouveaux (1896), Émile Zola's Travail (1901), and Jean Grave's Terre libre (1908). These works attend, it is argued, to the fate of idleness, and of the idler, in ways which not only bear out very different ideological agendas, but also provide a reflection on the limits of utopian idealism. By the turn of the century, an increase in leisure time had become critical to almost every effort to imagine the future trajectory of working-class emancipation. But the question of just how this abundant free time was to be employed gave rise to much anxious speculation. If calls for the individual's right to leisure were clearly bound up with ideals of edification and aesthetic and moral cultivation, which were both sanitary and salutary, these depended on the worker choosing to spend his or her time ‘well’. Whether at work or at leisure, the problem of harnessing the worker's energy to the ends of communitarian ideals is a central preoccupation of each utopian text. More than a form of individual deviance or a de Certeauian ‘tactic’, idleness proves to be a symptom of disaffection that threatens the very foundations of the utopian community, and in turn, the master-narrative of working-class redemption.