Las actividades humanas, el crecimiento demográfico y los procesos económicos y sociales pueden ejercer presiones sobre el recurso agua en cantidad y calidad adecuadas, haciendo necesario su manejo. La gestión sostenible del agua trasciende los aspectos de orden técnico y…

In this paper, the two-dimensional strip packing problem with 3-stage level patterns is tackled using genetic algorithms (GAs). We evaluate the usefulness of a greedy seeding procedure for creating the initial population, incorporating problem knowledge. This is motivated by the…

La antropología económica nace presuponiéndose como una interdisciplina, un intercambio de conceptos, información y conocimientos entre las ciencias económicas y las antropológicas. En este trabajo analizamos primeramente algunos de sus problemas fundantes y las proyecciones de tales tópicos en las…

El presente artículo trata la aplicación de un sistema experto capaz de determinar la factibilidad de funcionamiento de una máquina térmica desde el punto de vista termodinámico, mediante el análisis del diseño de un ciclo de potencia, el ciclo Joule…

The Millennium Development Goals (MDG) progress targets have not been met. Nevertheless, the United Nations (UN) has not yet undertaken in-depth review in order to discover the reasons behind this lack of progress in achieving the MDG. From a political…

Artificial neural networks (ANN) are very efficient in solving various kinds of problems But Lack of explanation capability (Black box nature of Neural Networks) is one of the most important reasons why artificial neural networks do not get necessary interest…

Objective – To investigate whether African American students’ computer attitudes predict levels of library anxiety.

Design – A user study in which two instruments were administered to a group of graduate students to measure computer attitudes and library anxiety.

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Objective – To describe critical care nurses’ on-duty information-seeking behavior.

Design – Participatory action research using ethnographic methods.

Setting – A twenty-bed critical care unit in a 275-bed community (non-teaching) hospital.

Subjects – A purposive sample of…

This review discusses the present trends in studies on the impacts of climate change on plant diseases. Firstly, the approaches used for studying the potential effects of altered temperature, water availability, CO2 and O3 air concentrations, and UV-B radiation on…