The Experts below are selected from a list of 324 Experts worldwide ranked by ideXlab platform
Ian Horrocks - One of the best experts on this subject based on the ideXlab platform.
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a software framework for matchmaking based on semantic web technology
International Journal of Electronic Commerce, 2004Co-Authors: Ian HorrocksAbstract:The semantic Web can make e-commerce interactions more flexible and automated by standardizing ontologies, message content, and message protocols. This paper investigates how semantic and Web Services technologies can be used to support Service Advertisement and discovery in e-commerce. In particular, it describes the design and implementation of a Service matchmaking prototype that uses a DAML -S based ontology and a description logic reasoner to compare ontology-based Service descriptions. By representing the semantics of Service descriptions, the matchmaker enables the behavior of an intelligent agent to approach more closely that of a human user trying to locate suitable Web Services. The performance of this prototype implementation was tested in a realistic agent-based e-commerce scenario.
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a software framework for matchmaking based on semantic web technology
International World Wide Web Conferences, 2003Co-Authors: Lei Li, Ian HorrocksAbstract:An important objective of the Semantic Web is to make Electronic Commerce interactions more flexible and automated. To achieve this, standardization of ontologies, message content and message protocols will be necessary.In this paper we investigate how Semantic and Web Services technologies can be used to support Service Advertisement and discovery in e-commerce. In particular, we describe the design and implementation of a Service matchmaking prototype which uses a DAML-S based ontology and a Description Logic reasoner to compare ontology based Service descriptions. We also present the results of initial experiments testing the performance of this prototype implementation in a realistic agent based e-commerce scenario.
Liang Cheng - One of the best experts on this subject based on the ideXlab platform.
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F8-Technical Session III: Wireless AdHocNetworks Lightweight Service Advertisement andDiscovery inMobile AdHocNetworks
2005Co-Authors: Liang ChengAbstract:Service Advertisement anddiscovery areimportant components forcollaborative applications inmobile ad hocnetworking (MANET)environment since they enable mobile communication andcomputing entities to provide Services andassociated data topeers andtobeawareofandusetheavailable Services anddata frompeers. Inthis research, wedesign andimplement alightweight protocol forService Advertisement and discovery based onaMANET multicast protocol ODMRP (On-Demand Multicast Routing Protocol). Service Advertisement anddiscovery information ispiggybacked inODMRProuting control packets. NS-2 simulation results showthat ourprotocol achieves thegoalofService Advertisement anddiscovery in mobile adhocnetworks withhigh successful data delivery ratio andlowoverheads. BIOGRAPHY Professor LiangChengistheDirector ofLONGLAB (Laboratory Of Networking Group, http://long.cse.lehigh.edu) andanAssistant Professor ofComputer Science andEngineering Department at Lehigh University. Hiscurrent research interests include: sensor andadhocnetworks, middleware, and network management. Currently headvises sixPh.D. students, hasmorethanforty publications ofbook chapters, journal andconference/workshop
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implementation of a lightweight Service Advertisement and discovery protocol for mobile ad hoc networks
Global Communications Conference, 2003Co-Authors: Baoning Wu, Wei Zhang, Liang ChengAbstract:Service Advertisement and discovery are important components for computing in mobile ad hoc network (MANET). In this paper, a lightweight protocol of Service Advertisement and discovery has been implemented, which is based on a MANET multicast protocol ODMRP (On-Demand Multicast Routing Protocol). In this protocol, Service Advertisement and discovery information is piggybacked in ODMRP routing control packets. Simulation results of the implementation prove that the implementation workload and resource consumption of the protocol are lightweight.
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GLOBECOM - Implementation of a lightweight Service Advertisement and discovery protocol for mobile ad hoc networks
GLOBECOM '03. IEEE Global Telecommunications Conference (IEEE Cat. No.03CH37489), 2003Co-Authors: Wei Zhang, Liang ChengAbstract:Service Advertisement and discovery are important components for computing in mobile ad hoc network (MANET). In this paper, a lightweight protocol of Service Advertisement and discovery has been implemented, which is based on a MANET multicast protocol ODMRP (On-Demand Multicast Routing Protocol). In this protocol, Service Advertisement and discovery information is piggybacked in ODMRP routing control packets. Simulation results of the implementation prove that the implementation workload and resource consumption of the protocol are lightweight.
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Piecewise Network Awareness Service for Wireless/Mobile Pervasive Computing
Mobile Networks and Applications, 2002Co-Authors: Liang Cheng, Ivan MarsicAbstract:This paper presents a piecewise framework for network awareness Service (NAS) for wireless/mobile pervasive computing. We investigate how piecewise consideration of wired and wireless elements of the framework architecture benefits Service Advertisement and discovery and network-awareness techniques. We also discuss scalability of the NAS framework with respect to platform computing capabilities. The framework is suitable for a wide range of computing devices, from powerful ones with multi-tasking operating systems (OS) to small ones with lightweight OS. Case studies applying the NAS framework to sensor monitoring in home networks and data streaming in pervasive multimedia computing are presented. The analytical results on the performance of the NAS framework in these case studies show that it has significant advantages over traditional network-awareness frameworks in terms of reducing wireless bandwidth consumption and saving battery energy of mobile devices.
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Service Advertisement and Discovery in Mobile Ad hoc Networks
2002Co-Authors: Liang ChengAbstract:Service Advertisement and discovery is an important component for ad hoc communications and collaboration in ubiquitous computing environments. In this paper, a lightweight Service Advertisement and discovery protocol for MANET (Mobile Ad hoc NETworks) based on ODMRP (On-Demand Multicast Routing Protocol) is presented. Its Service Advertisement and discovery information is piggybacked in ODMRP routing control packets. Thus the implementation workload and resource consumption are lightweight as long as mobile devices in MANET support multicast routing functionality. The protocol avoids excessive traffic overhead of periodic Advertisements since only updated Service Advertisements are distributed and the Service query/reply mechanism in the pull model is used. Moreover, the pull model deals with mobility in MANET because the advertised and registered Service can be obsolete after a certain period of time due to the mobility of either the server or client devices.
Lei Li - One of the best experts on this subject based on the ideXlab platform.
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a software framework for matchmaking based on semantic web technology
International World Wide Web Conferences, 2003Co-Authors: Lei Li, Ian HorrocksAbstract:An important objective of the Semantic Web is to make Electronic Commerce interactions more flexible and automated. To achieve this, standardization of ontologies, message content and message protocols will be necessary.In this paper we investigate how Semantic and Web Services technologies can be used to support Service Advertisement and discovery in e-commerce. In particular, we describe the design and implementation of a Service matchmaking prototype which uses a DAML-S based ontology and a Description Logic reasoner to compare ontology based Service descriptions. We also present the results of initial experiments testing the performance of this prototype implementation in a realistic agent based e-commerce scenario.
Elias C. Efstathiou - One of the best experts on this subject based on the ideXlab platform.
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WAC - Service discovery and provision for autonomic mobile computing
Lecture Notes in Computer Science, 2006Co-Authors: George C. Polyzos, Christopher N. Ververidis, Elias C. EfstathiouAbstract:Service discovery and related Service Advertisements, redirection and provision decisions are essential processes in networks supporting mobile communications in order for these systems to be self-configurable with zero or minimal administration overhead. More so in mobile networks, i.e. networks where the network infrastructure is moving and the topology is constantly changing. Finally, the servers themselves offering the Services might be mobile, wirelessly connected and battery powered and thus power limited and energy constrained, with a finite horizon of operation and Service availability. For this reason they will probably have rather selective policies for Service Advertisement and provision. In this paper we review our previous work on topics in this area and put it under this new perspective, providing our vision for a general autonomic framework for Service Advertisement, discovery, provision decision, redirection etc.
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Service discovery and provision for autonomic mobile computing
Lecture Notes in Computer Science, 2006Co-Authors: George C. Polyzos, Christopher N. Ververidis, Elias C. EfstathiouAbstract:Service discovery and related Service Advertisements, redirection and provision decisions are essential processes in networks supporting mobile communications in order for these systems to be self-configurable with zero or minimal administration overhead. More so in mobile networks, i.e. networks where the network infrastructure is moving and the topology is constantly changing. Finally, the servers themselves offering the Services might be mobile, wirelessly connected and battery powered and thus power limited and energy constrained, with a finite horizon of operation and Service availability. For this reason they will probably have rather selective policies for Service Advertisement and provision. In this paper we review our previous work on topics in this area and put it under this new perspective, providing our vision for a general autonomic framework for Service Advertisement, discovery, provision decision, redirection etc.
Jong Ik Park - One of the best experts on this subject based on the ideXlab platform.
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Does a TV Public Service Advertisement Campaign for Suicide Prevention Really Work
Crisis, 2016Co-Authors: In Han Song, Jung Won You, Ji Eun Kim, Jung Soo Kim, Won Kwon, Jong Ik ParkAbstract:Abstract. Background: One of the critical measures in suicide prevention is promoting public awareness of crisis hotline numbers so that individuals can more readily seek help in a time of crisis. Although public Service Advertisements (PSA) may be effective in raising the rates of both awareness and use of a suicide hotline, few investigations have been performed regarding their effectiveness in South Korea, where the suicide rate is the highest among OECD countries. Aims: The goal of this study was to evaluate the effectiveness of a television PSA campaign. Method: We analyzed a database of crisis phone calls compiled by the Korean Ministry of Health and Welfare to track changes in call volume to a crisis hotline that was promoted in a TV campaign. We compared daily call counts for three periods of equal length: before, during, and after the campaign. Results: The number of crisis calls during the campaign was about 1.6 times greater than the number before or after the campaign. Relative to the number o...
