Venture Philanthropy: the evolution of high-engagement philanthropy in Europe (in Mandarin) (original) (raw)

Propuesta para la integración de los contenidos en Preparación para la Defensa II en Medicina

Edumecentro, 2012

El estudio tiene como finalidad diseñar acciones para perfeccionar la integración de los contenidos temáticos en Preparación para la Defensa-II de Medicina, acordes con las dificultades y potencialidades detectadas en un primer momento. La investigación es de enfoque cualitativo y emplea como universo al total de docentes y estudiantes que impartieron o recibieron la asignatura en la sede central y los del Proyecto Policlínico Universitario de Santa Clara, y se trabaja con una muestra seleccionada de manera intencional por criterios, se aplican métodos teóricos y otros del nivel empírico como la observación, encuesta, análisis de documentos y el grupo nominal como técnica. Se realiza triangulación metodológica de la información obtenida, la cual permite identificar los contenidos susceptibles de integración, se formulan orientaciones metodológicas con este propósito, y se diseña un curso para los docentes. Los especialistas consultados ofrecen una valoración satisfactoria del producto según los rubros solicitados. Palabras clave: Integración, sistematización, contenidos, tareas docentes integradoras. ________________________________________________________________ PDF created with pdfFactory Pro trial version www.pdffactory.com EDUMECENTRO 2012;4(3):86-95

Aprendizaje cooperativo para el desarrollo humano social del profesional de las ciencias médicas

Edumecentro, 2009

COMUNICACIÓN Aprendizaje cooperativo para el desarrollo humano social del profesional de las ciencias médicas Cooperative learning for the social human development of the professional of the medical sciences Luis Alberto Alzate Peralta Licenciado en Enfermería. Especialista en Pedagogía de las Ciencias. Candidato a MSc. en Educación Médica Superior. Docente Universidad Simón Bolívar Barranquilla Colombia. Palabras clave: Aprendizaje cooperativo, desarrollo humano social, ciencias médicas, educación médica. La educación de este siglo exige cambios en los paradigmas educacionales desde diferentes aspectos y dimensiones, la concepción del docente como epicentro del conocimiento ha sido una figura que se ha debilitado con el paso del tiempo, principalmente debido al amplio acceso a la información disponible y al incremento de las experiencias acumuladas por la humanidad, por lo tanto los profesores que forman el nuevo recurso humano en salud deberían ser, en todo momento, fundamentalmente educadores, en el más amplio sentido de la palabra, debido a las transformaciones suscitadas en las nuevas formas de interacción social. Su acción no tendría que limitarse a sancionar conductas inadecuadas, o a evaluar fríamente los conocimientos del alumno, por ello, el diálogo profesor-alumno y alumno-profesor es esencial en este empeño, puesto que entender al alumno como persona, tiene una implicación superior que significa que deban comprenderse sus problemas y ayudarlo en su solución. PDF created with pdfFactory Pro trial version www.pdffactory.com

Buoyancy Heat Transfer In Staggered Dividing Square Enclosure

In this research, the Buoyancy heat transfer and flow patterns in a partially divided square enclosure with staggered partitions have been studied numerically. The partitions were distributed on the lower and upper surfaces of the box in staggered manner. The height of the partitions was varied. The conduction heat transfer through the fins (partitions) was also included. It is assumed that the vertical walls of enclosure were adiabatic and its horizontal walls were maintained at uniform but in different temperature. The problem was formulated in terms of the stream function-vorticity procedure. The numerical solution based on the transformation of the governing equations by using finite difference method was obtained. The effect of increasing the partition height and Rayleigh number on contour maps of the stream lines and temperature were reported and discussed. In addition, the research presented and discussed the results of the average Nussult number of the enclosures heated wall at various Rayleigh number and dimensionless partition heights. The results showed that the mean Nussult number increases with the increasing of Rayleigh number and decreases with the increasing of partition heights. The distributed heat by conduction through the partition increases with the increasing of the partition height especially at (H/L ≥ 0.3). A comparison between the obtained results and the published computational studies has been made and it showed a good agreement with percentage error not exceed (0.54%).

Biological Activities and Phytochemicals of the Fruits of Vitex Plants

The Vitex genus (Lamiaceae) is composed of 270 species, trees or shrubs; that are distributed in tropics worldwide. Vitex has been the source of a large number of compounds with pharmacological activities, many of them associated with their fruits. In spite of the high number of Vitex spp., fruit studies have been mainly focused in a reduced group; Vitex agnuscastus is the best studied, and several fruit-derived drugs, used to treat premenstrual syndrome, are commercialized in the United States of America and Europe. Other species with a good number of studies are V. rotundifolia, V. trifolia, V. negundo and V. doniana. Interesting activities associated with Vitex fruits are antitumoral (e.g., against breast, gastric, colon, leukemia and cervix cells), antioxidant, antimicrobial and anti-diarrhea. Identified fruit compounds belong to different phytochemical families such as flavonoids (e.g., casticin, orientin, and isoorientin), terpenes (e.g., rotundifaran, ferruginol), iridoids (e.g., agnoside, aucubin) and essential oils (e.g., 1,8-cineolene, sabinene). Interestingly, these fruits showed dark colors that have been poorly studied; these pigments could be associated with important biological activities based on the actual knowledge about natural pigments. In this review, we are showing the main studies about the chemicals and biological activities of Vitex spp. fruits, and it will be a reference material for future studies.

Shock Wave Capturing Numerically in Two-Dimensional Supersonic Wind Tunnel for Different Configurations

Numerical solutions of two dimensional Euler equations are obtained for transonic and supersonic flows. The shock capturing method is employed to solve compressible Euler equations by using MacCormack's time marching method that an explicit finite-difference technique. The test case chosen is that of a transonic and supersonic flow through a channel with a circular arc bump on the lower wall, half wedge and extended compression corner. Computational results accurately reproduced the flow field. In three cases, contour plots showing the important features of the flow-field are presented. The algorithm is tested for steady-state inviscid flows at different Mach numbers ranging from the transonic to the supersonic regime and the results are compared with the existing numerical solutions. The method incorporates bounded high resolution of discontinuities and is therefore well suited to all flow regimes ranging from transonic to supersonic.