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VTC
2008
IEEE
14 years 3 months ago
2008
IEEE
— In this paper, we study the joint design of uplink and downlink resources in OFDMA-based systems. We first analyze the interactions between uplink and downlink, due essentiall...
GLOBECOM
2007
IEEE
14 years 3 months ago
2007
IEEE
Abstract— Cooperative transmission can greatly improve communication system performance by taking advantage of the broadcast nature of wireless channels. Most previous work on re...
IPPS
2007
IEEE
14 years 3 months ago
2007
IEEE
Resource performance in the Computational Grid is not only heterogeneous, but also changing dynamically. However scheduling algorithms designed for traditional parallel and distri...
AIED
2007
Springer
14 years 3 months ago
2007
Springer
This paper describes an adaptive system called VL-PATSy, an extension to an existing system (PATSy) that adds a mechanism for serving vicarious learning (VL) resources. Vicarious l...
ECTEL
2007
Springer
14 years 3 months ago
2007
Springer
While the growing number of learning resources increases the choice for learners, it also makes it more and more difficult to find suitable courses. Thus, improved search capabili...