Global vision consensus on the next generation of wireless mobile communications, broadly termed 4G, sketches a heterogeneous infrastructure, comprising different wireless access systems in a complementary manner and vested with reconfiguration capabilities that will facilitate a more flexible and dynamic adaptation of the wireless network infrastructure to better meet the ever-changing service...

This paper outlines ORCAS, a framework for open Multi-Agent Systems (MAS) that maximizes the reuse of agent capabilities through multiple application domains, and supports the automatic, on-demand configuration of agent teams according to stated problem requirements. Considerable effort has been devoted to the applicability of the framework, which resulted in the implementation of an infrastruc...

Personal Digital Assistants (PDAs) are becoming commonplace, and feature continually increasing processing and storage capabilities. Distribution of media through wireless means to these devices is becoming less expensive, but is not yet wide spread. In this paper, we describe a novel communication infrastructure to provide distribution of information to PDAs utilizing inexpensive methods; our ...

The capability of dynamically monitoring the perfomance of the communication infrastructure is one of the emerging requirements for a Grid. We claim that such a capability is in fact orthogonal to the more popular collection of data for scheduling and diagnosis, which needs large storage and indexing capabilities, but may disregard real-time performance issues. We discuss such claim analyzing t...

Cloud Computing is a model of both service delivery and consumption for increasing the capabilities of enterprises dynamically without investing in new infrastructure, training new personnel, or licensing new software. It refers to everything delivered as services over the Internet. Although the benefits of Cloud Computing are evident, security is one of the major issues which hamper the growth...

Increases in the number and size of treebanks, and the complexity of their annotation, present challenges to their exploration by the research community. Adhering to different formalisms, lacking clear standards, and requiring specialized search and visualization and other services, treebanks have not been widely accessible to a broad audience and have remained underexploited. The INESS project...

The capability of dynamically monitoring the performance of the communication infrastructure is one of the emerging requirements for a Grid. We claim that such a capability is in fact orthogonal to the more popular collection of data for scheduling and diagnosis, which needs large storage and indexing capabilities, but may disregard real-time performance issues. We discuss such claim analyzing ...

Providing meaningful estimations for the quantitative annotations on the steps of complex multi-step attacks is hard, as they are jointly influenced by the infrastructure and attacker properties. The paper introduces attacker profiling as a concept of separation of the infrastructure properties from the properties of malicious agents undertaking strategic decisions in the considered environment...

The USC GridSec project develops distributed security infrastructure and self-defense capabilities to secure wide-area networked resource sites participating in a Grid application. We report new developments in trust modeling, security-binding methodology, and defense architecture against intrusions, worms, and flooding attacks. We propose a novel architectural design of Grid security infrastru...

Offshore Outsourcing is an increasing IS/IT strategy that relies on third party Service Providers typically located in developing, low wage countries. The scale and scope is extending from traditional application development activities to embrace infrastructure management. It poses additional risks on both Service Recipients and Providers, which need to be carefully evaluated and assessed. In t...