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The growing deployment rate of wireless LANs indicates that wireless networking is rapidly becoming a prevalent form of communication. As users become more accustomed to the use of mobile devices, they increasingly want the additional benefit of roaming. The Mobile IP protocol has been developed as a solution for allowing users to roam outside of their home(More)
Performance evaluation and analysis of wireless networks is essential because testbed experiments facilitate a better understanding of network and application characteristics. This understanding of performance, in turn, results in robust protocol design. In this paper, we present an experimental study of multimedia traffic performance in mesh networks. We(More)
International co-authorship relations and university-industry-government (" Triple Helix ") relations have hitherto been studied separately. Using Japanese (ISI) publication data for the period 1981-2004, we were able to study both kinds of relations in a single design. In the Japanese file, 1,277,823 articles with at least one Japanese address were(More)
Firms spend millions of dollars on IT implementation initiatives , such as ERP, workflow, and knowledge management (KM) systems, expecting significant operational or performance gains from them. The worldwide market for ERP software licensing, implementation, and maintenance was $28.8 billion in 2006, and the number was projected to grow at a compound(More)
The paper describes the construction and functions of the Citation Database for Japanese Papers (CJP) developed at the National Institute of Informatics, Japan (NII), and the Impact Factors of CJP's source journals. Then statistical analyses of multidimensional scaling on citation counts for the academic society journals to measure relationship among the(More)
— Hybrid wireless networks are a viable networking solution to combat the limitations of infrastructured wireless networks and provide Internet connectivity to ad hoc networks. This paper first analyzes the requirements for deployment of hybrid networks under different application scenarios. Then two routing schemes designed for different traffic patterns(More)
—Dynamic address assignment enables nodes in mobile ad hoc networks to obtain a routable address without the need for any explicit configuration. It provides a means for nodes to communicate without any centralized infrastructure, and provides a mechanism for dynamic network membership. Recently, a considerable number of dynamic addressing protocols have(More)
Ad hoc networks have been proposed for a variety of applications where support for real time, multimedia services may be necessary. This requires that the network is able to offer quality of service (QoS) appropriate for the latency and throughput bounds needed to meet the real time constraint. An important component for QoS provisioning is resource(More)