23,412 research outputs found
Improving Knowledge Retrieval in Digital Libraries Applying Intelligent Techniques
Nowadays an enormous quantity of heterogeneous and distributed information is stored in the digital University. Exploring online collections to find knowledge relevant to a user’s interests is a challenging work. The artificial intelligence and Semantic Web provide a common framework that allows knowledge to
be shared and reused in an efficient way. In this work we propose a comprehensive approach for discovering E-learning objects in large digital collections based on analysis of recorded semantic metadata in those objects and the application of expert system technologies. We have used Case Based-Reasoning
methodology to develop a prototype for supporting efficient retrieval knowledge from online repositories.
We suggest a conceptual architecture for a semantic search engine. OntoUS is a collaborative effort that
proposes a new form of interaction between users and digital libraries, where the latter are adapted to users
and their surroundings
Poster Abstract: Practical issues in image acquisition and transmission over wireless sensor network
Multimedia data have become an important objective in
wireless sensor networks. Due to the node resource constraints
(energy consumption, memory capacity, network
latency and throughput) the incorporation of image sensor
at the nodes is currently a challenge.
In this paper, we study different node architectures,
evaluating processing time, energy consumption, image
quality and data delivery issues. The study shows that
a specialized image co-processor is an optimal solutionJUnta de Andalucía P07-TIC-0247
Alternative approach to the regularization of odd dimensional AdS gravity
In this paper I present an action principle for odd dimensional AdS gravity
which consists of introducing another manifold with the same boundary and a
very specific boundary term. This new action allows and alternative approach to
the regularization of the theory, yielding a finite euclidean action and finite
conserved charges. The choice of the boundary term is justified on the grounds
that an enhanced 'almost off-shell' local AdS/Conformal symmetry arises for
that very special choice. One may say that the boundary term is dictated by a
guiding symmetry principle. Two sets of boundary conditions are considered,
which yield regularization procedures analogous to (but different from) the
standard 'background substraction' and 'counterterms' regularization methods.
The Noether charges are constructed in general. As an application it is shown
that for Schwarszchild-AdS black holes the charge associated to the time-like
Killing vector is finite and is indeed the mass. The Euclidean action for
Schwarzschild-AdS black holes is computed, and it turns out to be finite, and
to yield the right thermodynamics. The previous paragraph may be interpreted in
the sense that the boundary term dictated by the symmetry principle is the one
that correctly regularizes the action.Comment: References added, typos corrected.Content changes: Title (Alternative
by Unified), Abstract, Introduction and Sections changed emphasizing and
discussing differences with standard Counterterms and Background Subtraction
regularization frameworks. Deeper and more detailed discussion of the
enhanced symmetry of the proposed action and the required fall-off condition
Instalación de refinerías en la región de Tula en Hidalgo: análisis desde la modernidad
El propósito del trabajo es analizar las transformaciones sociales, económicas, políticas y territoriales más importantes que experimentó la región de Tula, en el estado de Hidalgo, como consecuencia de la construcción de la refinería Miguel Hidalgo y las paradojas que esa experiencia plantea ante la instalación de la refinería Bicentenario. Nuestro interés se centra en identificar las expectativas y temores que surgen ante la instalación de la nueva refinería, empleando para ello el planteamiento teórico de Marshall Berman sobre la modernidad. A partir de ello se analiza el contexto en el que se desarrolla la industria de la refinación en México y las transformaciones ocurridas en la región como consecuencia de la instalación de las refinerías
Intelligent Integrated Management for Telecommunication Networks
As the size of communication networks keeps on growing, faster connections, cooperating technologies and the divergence of equipment and data communications, the management of the resulting networks gets additional important and time-critical. More advanced tools are needed to support this activity. In this article we describe the design and implementation of a management platform using Artificial Intelligent reasoning technique. For this goal we make use of an expert system. This study focuses on an intelligent framework and a language for formalizing knowledge management descriptions and combining them with existing OSI management model. We propose a new paradigm where the intelligent network management is integrated into the conceptual repository of management information called Managed Information Base (MIB). This paper outlines the development of an expert system prototype based in our propose GDMO+ standard and describes the most important facets, advantages and drawbacks that were found after prototyping our proposal
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