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Strict Priority Queuing (SPQ) is a widely used queuing method for applying preferential service on edge networks. SPQ, in presence of persistent high priority traffic, is known to behave in a very hostile manner toward low priority flows, causing them to experience poor TCP performance. This often leads to substantial packet losses, which consequently results in aggressive reduction in the congestion...
The following topics are dealt with: mobility; quality of service; measure based and classification mechanism; clusters, grids, and distributed systems; processors and input/output systems; data security; multimedia communications; protocols; wireless networks; computer applications; real time systems; and voice over IP.
This is an introduction to the proceedings of the MWS 2007 workshop held at EDOC 2007. It first explains the motivation for and background of the workshop. Then, it contains a short description of the keynote, each long and short peer-reviewed paper, and the discussion session "impact of various execution environments on middleware for web services". After the closing statements, MWS 2007...
Current fashion systems to interconnect large software architectures are moving toward SOA based solutions. This new paradigm for designing system can be improved, in our opinion, by using semantics. Semantics can a play a main role in boosting interoperability thanks to current technologies to express knowledge and to describe semantic Web services (SWS). This paper tackles the provision of a Software...
A principal factor in sensor network design is energy efficiency. In this work, we propose to extend the lifetime of sensor networks using appropriate choice of sensor node distribution. The key idea of our scheme is to deploy more nodes in areas of extensive energy usage. Using this scheme of sensor node distribution, we use probabilistic angular routing to route data packets from the sensor nodes...
This paper explores the attributes, layering models and objective functions in cross layer designs for mobile ad hoc wireless networks by taking all the statistical characteristics and constraints from the physical (PHY) layer, media access control (MAC) layer and network (NET) layer into consideration. This paper reviews the entire network optimization across all the PHY/MAC/NET layers. At the PHY...
Future computer environments will include mobile computers which will eiUler be disconnected, weakly interconnected by low speed wireless networks such as GSM, or fully inter-connected by high speed networks ranging from Ethernet to ATM. While the transition between networks is currently a heavyweight operation we believe that developments in network interface technology will soon enable mobile computers...
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