Se realizó un análisis de la concentración de algunos minerales como potasio, sodio, calcio, magnesio y hierro en el tejido muscular del morocoto Piaractus brachypomus del Orinoco medio en Venezuela, capturado en algunas lagunas de inundación con redes de enmalle.…

La evaluación de los aprendizajes, como actividad prominente de los procesos formativos por su decisiva acción pedagógica, obliga constantemente a reflexionar y debatir sobre su práctica. Esto conduce a inquietantes cuestionamientos: ¿cómo se debe evaluar?, ¿son apropiadas las técnicas e…

I would imagine that this year will be one of great change for many readers.  We have become used to the constant change of technology: hardware, software, networking, and new and different applications of graphics in almost every profession.  But…

"PUBLISH or PERISH"   We in academia have all been subject to the doctrine of "publish or perish".  It is a mist for promotion and tenure.  If you don't find a research area (preferably funded by grants) and write prolifically…

We instillate rational cognition and learning in seemingly riskless choices and judgments. Preferences and possibilities are given in a stochastic sense and based on revisable expectations. the theory predicts experimental preference reversals and passes a sharp econometric test of the…

The paper investigates the pricing of derivative securities with calendar-time maturities.

In the presence of moral hazard, received agency theory predicts the Marshallian inefficiency of agricultural tenancy contracts, meaning that inputs per hectare on sharecropped land will differ from that on owned land. in this paper, we test for the presence…

In this article we study the effect of uncertainty on an entrepreneur who must choose the capacity of his business before knowing the demand for his product. The unit profit of operation is known with certainty but there is no…

The article reveals economy competitiveness and knowledge-based economy questions and the basis of information and communication technologies influence on this.  Methods and competitiveness estimation are presented. The work contains the methods of competitiveness estimation; researching of competitiveness level, human development…

Business engineering process improvement is required because of the complexity of production and changing markets. Therefore, a multi-level-model is being developed by which it is possible to examine not only the enterprise level of the business processes, but also the…