Juan A. Botía Blaya

Ontology Based Approach to the Detection of Domestics Problems for Independent Senior People

In the first decade of the 21st century, there is a tremendous increment in the number of elderly people which live independently in their own houses. In this work, we focus on elderly people which spend almost all the time by their own. The goal of this work is to build an artificial system capable of unobtrusively monitor this concrete subject. In this case, the system must be capable of detecting potential situations of danger (e.g. the person lays unmobilised in the floor or she is suffering some kind of health crysis). This is done without any wearable device but only using a sensor network and an intelligent processing unit within a single and small CPU. This kind of such unbostrusive system makes seniors to augment his or her perception of independence and safeness at home.

POPEYE: providing collaborative services for ad hoc and spontaneous communities

Next generation collaborative systems will offer mobile users seamless and natural collaboration amongst a diversity of agents, within distributed, knowledge-rich and virtualized working environments. This ambitious goal faces numerous challenges from the underlying communication infrastructure to the high level application services, with the aim to provide services with the appropriate quality (such as persistence, synchronization, and security). Most currently available tools supporting collaboration address either rather traditional and rigid intra-organizational collaboration scenarios or, at the opposite, completely free and unstructured open communities’s interactions. Emerging dynamic, flexible and ad hoc collaboration schemes are hardly or not supported at all. The POPEYE framework offers collaborative services for applications that aim to enable spontaneous collaboration over P2P wireless ad hoc groups, where fixed infrastructure is not a prerequisite, where virtual communities can emerge spontaneously and share data with the appropriate quality of service for business applications (persistence, synchronization, security, etc.).

On the application of the semantic web rule language in the definition of policies for system security management

The adoption of a policy-based approach for the dynamic regulation of a system or service (e.g. security, QoS or mobility service) requires an appropriate policy representation and processing. In the context of the Semantic Web, the representation power of languages enriched with semantics (i.e. semantic languages), together with the availability of suitable interpreters, make such kind of languages well suited for policies representation. In this paper, we describe our proposal for the combination of the CIM-OWL ontology (i.e., the mapping of the DMTF Common Information Model into OWL) with the Semantic Web Rule Language as the basis for a semantically-rich security policy language that can be used to formally describe the desired security behaviour of a system or service. An example of security policy in this language and its reasonig are also presented.

Solving Conflicts in Agent-Based Ubiquitous Computing Systems: A Proposal Based on Argumentation

Agent-based ubiquitous computing environments have many sources of complexity. One of the most important is derived from the high number of agents which must survive in such kind of system. In systems with a high population of agents, conflicts are very frequent. Thus, there is a need for highly efficient techniques to solve conflictive situations, when they are produced. In this chapter, we propose an approach based on argumentation to solve authorization conflicts. Authorization decisions are taken with authorization policies and conflicts are solved by the agent themselves by arguing.

Distributed provision and management of security services in globus toolkit 4

Globus Toolkit version 4 (GT4) provides a set of new services and tools, completing a first step towards the migration to web services of previous Globus Toolkit versions It provides components addressing basic issues related to security, resource discovery, data movement and management, etc However, it still lacks from advanced management frameworks that may be linked to GT4 services and thus providing a system-wide view of these services This is especially true in the case of security related services They need to be properly managed all across different organizations collaborating in the grid infrastructure This paper presents the major achievements when designing and developing a semantic-aware management framework for GT4 security services.

Towards semantic-aware management of security services in GT4

Globus Toolkit version 4 (GT4) leads to a set of new services and tools. This is the culmination of a first step towards the migration to web services from previous Globus Toolkit versions. GT4 directly addresses basic issues, in the form of services, inherent to any distributed system like, for example, security, resource discovery, data movement and management, etc. However, we believe that an advanced management is still needed in the framework, in order to provide a system-wide view of these services. This is especially true in the case of security related services. They must be properly managed all across different collaborating organizations within the grid infrastructure. This paper presents the major achievements when designing and developing a semantic-aware management framework for GT4 security services.