Ontology mapping involves the task of finding similarities among overlapping sources by using ontologies. In a Federated System in which distributed, autonomous and heterogeneous information sources must be integrated, ontologies have emerged as tools to solve semantic heterogeneity problems. In…

This article describes strategies devised to improve the efficiency of two classical index data structures for parallel textual databases. The design and cost evaluation is effected on top of the bulk-synchronous model of parallel computing. This allows us to compare…

Software based systems incrementally provide critical services to users. Mobile telephone systems, for example, are used in circumstances in which the malfunctioning may have disastrous consequences.
During the last years, software has been incorporated in devices used in daily life,…

Defining software requirements is a complex and difficult process, which often leads to costly project failures.
Requirements emerge from a collaborative and interactive negotiation process that involves heterogeneous stakeholders (people involved in an elicitation process such as users, analysts, developers,…

La noción de formularios como una manera de organizar y presentar datos ha sido usada desde el comienzo de la World Wide Web. Los formularios web han evolucionado junto con el desarrollo de nuevos lenguajes de marcado, en los cuales…

One of the main concerns is the nature of the missing values. Let’s consider extremes for simplicity. If missing at random we have not to care about. But if missing shows structures that covariate with substantive variables we have to…

Este estudio analiza las diferencias en la integración de extranjeros viviendo
en intra e interétnicas parejas en Alemania. La teoría de la distancia social
asume que los migrantes que forman parte de una pareja mixta estarán mejor
integrados o, al…

Purpose: To determine the scientific evidence about the prevalence of accommodative and nonstrabismic binocular anomalies. Methods: We carried out a systematic review of studies published between 1986 and 2009, analysing the MEDLINE, CINAHL, FRANCIS and PsycINFO databases. We considered admitting…

El presente trabajo de grado, fruto de la investigación con el tema “Educación en
Valores a partir del Evangelio de Mateo. Propuesta de formación para los niños y niñas
de sexto y séptimo de Educación General Básica”, realizada en la…

La Terapia Cognitivo Conductual reduce los síntomas tanto de depresión como ansiedad a un nivel más rápido que cualquier otra terapia (Malkinson, 2010). El sujeto a participar en este estudio de caso es una mujer que cumple con los criterios…