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In this paper, we propose a Core Grid Ontology (CGO) that defines fundamental Grid-specific concepts, and the relationships between them. One of the key goals is to make this Core Grid Ontology general enough and easily extensi-ble to be used by different Grid architectures or Grid mid-dleware, so that the CGO can provide a common basis for representing(More)
This paper presents CSPR, a compressive sensing based approach for path reconstruction in wireless sensor networks. By viewing the whole network as a path representation space, an arbitrary routing path can be represented by a path vector in the space. As path length is usually much smaller than the network size, such path vectors are sparse, i.e., the(More)
The problem of mobility in IP networks has traditionally been solved at the network layer. We present an alternative solution that solves it at the transport layer in an end-to-end fashion, leveraging the ability of a modern transport layer protocol (SCTP) to use multiple IP addresses per association. This is achieved by dynamically modifying this set of IP(More)
The CrossGrid international distributed testbed will share resources across fifteen European sites, to run interactive applications, and is one of the challenging points of the CrossGrid project. The sites list ranges from relatively small computing facilities in universities, to large computing centers, so offering an ideal mixture to test the(More)
AIM Somatostatin receptor subtype 2 (SSTR2) is the principal mediator of somatostatin's (SST) antiproliferative effects on normal and cancer cells. Therefore, we investigated whether the enhanced expression of SSTR2 could inhibit the proliferation of tumor cells, and, if so, the mechanisms that might be involved. METHODS SSTR2 expression levels were(More)
In this paper, we introduce a core Grid ontology that defines fundamental Grid domain concepts, vocabularies and relationships. This ontology is based on a general model of Grid infrastructures, and described in Web Ontology Language OWL. Such an ontology can play an important role in building Grid-related Knowledge base and in supporting the realization of(More)
In this paper we describe an ontology-based information integration approach that is suitable for highly dynamic distributed information sources, such as those available in Grid systems. The main challenges addressed are: 1) information changes frequently and information requests have to be answered quickly in order to provide up-to-date information; and 2)(More)
Recent years mesh-based Peer-to-Peer live streaming has become a promising way for service providers to offer high-quality live video streaming service to Internet users. In this paper, we make a detailed study on modeling and performance analysis of the pull-based P2P streaming systems. We establish the analytical framework for the pull-based streaming(More)