A Federated System is a collection of independent, cooperative, possibly heterogeneous and autonomous computer systems (usually database systems) which allows sharing all or some of its data. A Service-oriented Architecture is an application architecture whose functionalities are defined as independent…

Effective document retrieval using domain knowledge and semantics is one of the major challenges in Information Retrieval. Over the last years, there has been a growing interest in ontologies as an artifact for human knowledge representation and a critical component…

The refinement technique allows us to capture the relationship between specification and implementation in software developments. The precise documentation of the refinement relations hip makes it possible the traceability of the requirements through the refinement steps.
Unfortunately, the standard modelling…

As a contribution to consider software projects to be risk investments, it is important the full standardization of either the planning methodology (as a subset of project management methodology) and the effort estimation method. We think there is important and…

The application of ANNs (Artifi cial Neural Networks) has been studied by many researchers in modelling rainfall runoff processes. However, the work so far has been focused on the rainfall data from traditional raingauges. Weather radar is a modern technology…

El crecimiento continuo de la Internet ha permitido a las personas, alrededor de todo mundo, realizar transacciones en línea, buscar información o navegar usando el explorador de la Web. A medida que más gente se siente cómoda usando los exploradores…

Se presenta un control automático simple para aplicaciones de caracterización óptica de materiales usando la técnica Z-scan. En particular, se enfatiza el proceso de automatización. Para este propósito, se usó un puerto de comunicación de I/O de una tarjeta de…

From several sources the advantages of a methodology based on work in groups at university have been pronounced. It is desirable to have a method to assess not only the product but also the group process. Nevertheless, the university professors,…

This paper investigates three dimensions of intellectual capital, i.e. human capital, structural capital and relational capital and their inter-relationships. For that, a model is developed, which evaluates the intellectual capital within organizations located in developing countries areas. It is applied…

Work constitutes a relevant sphere in life: levels of competence, aptness, responsibility and productivity press on the worker in a pursuit of self-improvement. This research attempts to investigate the prevalence of Type A behavior pattern and dysfunctional attitudes, and the…