Belief Revision in Structured Probabilistic Argumentation

In real-world applications, knowledge bases consisting of all the information at hand for a specific domain, along with the current state of affairs, are bound to contain contradictory data coming from different sources, as well as data with varying degrees of uncertainty attached. Likewise, an important aspect of the effort associated with maintaining knowledge bases is deciding what information is no longer useful; pieces of information (such as intelligence reports) may be outdated, may come from sources that have recently been discovered to be of low quality, or abundant evidence may be available that contradicts them. In this paper, we propose a probabilistic structured argumentation framework that arises from the extension of Presumptive Defeasible Logic Programming (PreDeLP) with probabilistic models, and argue that this formalism is capable of addressing the basic issues of handling contradictory and uncertain data. Then, to address the last issue, we focus on the study of non-prioritized belief revision operations over probabilistic PreDeLP programs. We propose a set of rationality postulates -- based on well-known ones developed for classical knowledge bases -- that characterize how such operations should behave, and study a class of operators along with theoretical relationships with the proposed postulates, including a representation theorem stating the equivalence between this class and the class of operators characterized by the postulates

Guías para aplicación de Normas de Calidad para los procesos de Ingeniería de Software en productos desarrollados con Lenguajes de Programación Open Source: relevamiento y aplicación en PYMES de la zona de influencia de la UNER Concordia

El Software Libre u Open Source es una forma de licenciamiento que da a los usuarios la libertad de compartir, estudiar y modificar el software. Este paradigma ha tenido impedimentos para su adopción en ambientes empresariales y comerciales debido a concepciones en muchos casos erróneas. En la actualidad, varias de estas ideas se han desmitificado, brindando una dosis de realidad a las oportunidades y obstáculos de esta filosofía. Esto se manifiesta en una evolución y aceptación paulatina de la adopción de software libre como temática central en la Ingeniería de Software. Este contexto plantea la necesidad de contar con estándares de medición y certificación de calidad específicos para productos de Software Libre y de las competencias y desempeño de empresas y profesionales que utilicen, generen y promocionen el Software Libre. Este proyecto de investigación propuso la formulación de marcos metodológicos y modelos de certificación relacionados con software libre y lenguajes de programación open source, tanto para empresas usuarias como desarrolladoras. De esta manera, se pretendió dar valor agregado y ventaja competitiva a las empresas y profesionales que utilicen, desarrollen y/o promuevan el Software Libre y las tecnologías abiertas

Primary aldosteronism: complete remission after adrenal venography

A remission of adrenal adenoma producing aldosterone is described as a consequence of adrenal venous catheterization. The patient did not undergo surgery but she was kept on frequent clinical controls. The complete remission of the syndrome is still persisting three years after the incident. Since adrenal insufficiency is described after adrenal venous catheterization, the authors suggest that this procedure is to be restricted to well selected patients. When this incident occurs in pathological glands, a remission of endocrine syndrome may be expected