The Experts below are selected from a list of 162 Experts worldwide ranked by ideXlab platform
Young-sik Jeong - One of the best experts on this subject based on the ideXlab platform.
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ISPA - Reconfiguration of information management framework based on adaptive grid computing
Parallel and Distributed Processing and Applications, 2006Co-Authors: Eun-ha Song, Sung-kook Han, Laurence T. Yang, Young-sik JeongAbstract:In this paper, GridIMF provides the users with consistency while adapting to variability grid information. GridIMF designs hierarchical 3-tier information management model in accordance with participating intention, roles and operating strategies of grid information. In order to manage grid information in effective ways, GridIMF provides grid service while dividing to GVMS and GRMS. GVMS suggests optimal virtual organization selection mechanism for improving performance of specific Applications and LRM auto-recovery strategy that treat faults of virtual organization. GRMS supports adaptive performance-based task allocation method for load balancing and fault tolerance. State monitoring and visualization view provides adaptability of managing grid information. Application Proxy removes inter-dependency between service objects of GridIMF and Application objects. For analyzing GridIMF executability, it adapts two fractal image processing those characteristics are different.
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EUC - Hierarchical and dynamic information management framework on grid computing
Embedded and Ubiquitous Computing, 2006Co-Authors: Eun-ha Song, Yang-seung Jeon, Sung-kook Han, Young-sik JeongAbstract:This paper presents a GridIMF framework that provides support for adaptive grid services in response to the change of resource supplies and demands in a dynamic computing environment. The framework features a 3-tier hierarchical resource management structure. At the top is a global information manager that serves as a service broker between resource requesters and providers. Resource providers form virtual organizations, each of which is controlled by a local resource manager. The resource managers schedule the execution of tasks adaptively for efficiency and fault tolerance according to the dynamic resource availability information. The framework provides a common API through an Application Proxy. The Proxy decouples grid Applications from the implementation details of the framework
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Reconfiguration of information management framework based on adaptive grid computing
Lecture Notes in Computer Science, 2006Co-Authors: Eun-ha Song, Sung-kook Han, Laurence T. Yang, Young-sik JeongAbstract:In this paper, GridIMF provides the users with consistency while adapting to variability grid information. GridIMF designs hierarchical 3-tier information management model in accordance with participating intention, roles and operating strategies of grid information. In order to manage grid information in effective ways, GridIMF provides grid service while dividing to GVMS and GRMS. GVMS suggests optimal virtual organization selection mechanism for improving performance of specific Applications and LRM auto-recovery strategy that treat faults of virtual organization. GRMS supports adaptive performance-based task allocation method for load balancing and fault tolerance. State monitoring and visualization view provides adaptability of managing grid information. Application Proxy removes inter-dependency between service objects of GridIMF and Application objects. For analyzing GridIMF executability, it adapts two fractal image processing those characteristics are different.
Wang Hai-hang - One of the best experts on this subject based on the ideXlab platform.
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Application Research on I/O Multiplexing Proxy of Network Isolation System
Computer Science, 2008Co-Authors: Wang Hai-hangAbstract:Application Proxy has provided a running platform for other Applications in the network isolation system.Firstly,it proposed a suitable Proxy model for the network isolation system through comparing traditional Proxy solutions.Secondly,it analyzed I/O multiplexing in practical use and proposed a method to realize Application Proxy in the network isolation system based on the epoll technology.Then,it described the realization process in detail.Finally,it researched the system performance,and proposed data caching method and re-sending mechanism based on the TTL of IP protocol.
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Study on the realization of differentiated services in network isolation system
Journal of Computer Applications, 2008Co-Authors: Wang Hai-hangAbstract:Implementing Differentiated Services(DS)in network isolation system can further improve its QoS.Firstly,Application Proxy model in network isolation system was researched,and fundamental requirements for the DS implementation were described.Under these requirements,it proposed a feasible architecture for DS realization in inner unit.And then,with the constructed architecture,it described the realization methods of Application data classification,data queuing and other related technologies.Finally,it researched the organization of configuration information and the configuring process.
Eun-ha Song - One of the best experts on this subject based on the ideXlab platform.
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ISPA - Reconfiguration of information management framework based on adaptive grid computing
Parallel and Distributed Processing and Applications, 2006Co-Authors: Eun-ha Song, Sung-kook Han, Laurence T. Yang, Young-sik JeongAbstract:In this paper, GridIMF provides the users with consistency while adapting to variability grid information. GridIMF designs hierarchical 3-tier information management model in accordance with participating intention, roles and operating strategies of grid information. In order to manage grid information in effective ways, GridIMF provides grid service while dividing to GVMS and GRMS. GVMS suggests optimal virtual organization selection mechanism for improving performance of specific Applications and LRM auto-recovery strategy that treat faults of virtual organization. GRMS supports adaptive performance-based task allocation method for load balancing and fault tolerance. State monitoring and visualization view provides adaptability of managing grid information. Application Proxy removes inter-dependency between service objects of GridIMF and Application objects. For analyzing GridIMF executability, it adapts two fractal image processing those characteristics are different.
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EUC - Hierarchical and dynamic information management framework on grid computing
Embedded and Ubiquitous Computing, 2006Co-Authors: Eun-ha Song, Yang-seung Jeon, Sung-kook Han, Young-sik JeongAbstract:This paper presents a GridIMF framework that provides support for adaptive grid services in response to the change of resource supplies and demands in a dynamic computing environment. The framework features a 3-tier hierarchical resource management structure. At the top is a global information manager that serves as a service broker between resource requesters and providers. Resource providers form virtual organizations, each of which is controlled by a local resource manager. The resource managers schedule the execution of tasks adaptively for efficiency and fault tolerance according to the dynamic resource availability information. The framework provides a common API through an Application Proxy. The Proxy decouples grid Applications from the implementation details of the framework
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Reconfiguration of information management framework based on adaptive grid computing
Lecture Notes in Computer Science, 2006Co-Authors: Eun-ha Song, Sung-kook Han, Laurence T. Yang, Young-sik JeongAbstract:In this paper, GridIMF provides the users with consistency while adapting to variability grid information. GridIMF designs hierarchical 3-tier information management model in accordance with participating intention, roles and operating strategies of grid information. In order to manage grid information in effective ways, GridIMF provides grid service while dividing to GVMS and GRMS. GVMS suggests optimal virtual organization selection mechanism for improving performance of specific Applications and LRM auto-recovery strategy that treat faults of virtual organization. GRMS supports adaptive performance-based task allocation method for load balancing and fault tolerance. State monitoring and visualization view provides adaptability of managing grid information. Application Proxy removes inter-dependency between service objects of GridIMF and Application objects. For analyzing GridIMF executability, it adapts two fractal image processing those characteristics are different.
Khong Neng Choong - One of the best experts on this subject based on the ideXlab platform.
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The case for a dynamic Proxy framework with voluntary/incentive-based client hosting scheme
Journal of Network and Computer Applications, 2005Co-Authors: Khong Neng Choong, Borhanuddin Mohd Ali, V. Prakash, Yoke Chek YeeAbstract:In this paper, we present and evaluate a dynamic Proxy framework called the chek Proxy framework (CPF). CPF is an Application-level approach that provokes the use of client machines to host at runtime a server-initiated intermediate object called dynamic Application Proxy server (DAPS) based on the designed clustering policy. Unlike conventional and current dynamic Proxy systems, CPF adopts an incentive scheme where the selected client machines will be rewarded for sharing the central server workloads by servicing local/regional client requests. The results showed that the CPF approach reduces both the processor utilization and memory consumption of the central server by 15.1% and 16.5 MB, respectively, than the conventional client/server approach in our prototype implementation. With our simulation, it is further quantified that allocating DAPS to work cooperatively in a hierarchical fashion further increases the average client-receiving rate and the network throughput by at least 100% and 35%, respectively, with a server workload reduction of 11.38%, than DAPS serving end-clients directly.
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Policy-Based Dynamic Proxy Framework: An Application Level Infrastructure For Active Service Creation And Contents Delivery
2003Co-Authors: Khong Neng ChoongAbstract:This thesis focuses on the dynamic Proxy framework named the Chek Proxy Framework (CPF). The main objectives are to scale the existing Internet architecture by conserving the backbone bandwidth, reducing server loads, and improving the overall networking system performance, particularly the client receiving rate. These were achieved by deploying Application-level Proxy services within the network, to accelerate and customise the delivery of contents. The CPF is based on the 3-tier distributed computing architecture with the client and server residing at the ends of the respective networks. A dynamically appointed middle-tier system, the Dynamic Application Proxy Server (DAPS) is created ondemand and resides at the client-side network based on the designed clustering policy. The uniqueness of CPF lies on the use of voluntary client machines, instead of static and dedicated machines to host DAPS services created at runtime.
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Distributed Client/Server Architecture With Dynamic Middle Tier
1999Co-Authors: Khong Neng ChoongAbstract:Widespread use of computer networks and the demanding needs of current network Applications and technology impose a challenge to use the bandwidths in an efficient manner so as to solve the network congestion and server overloading problems. Some past and on-going solutions such as server replications and caching have been proposed to overcome these deficiencies. However, these solutions have not been implemented in an economical and configuration-transparent manner. Moreover, the problems of caching and disseminating real-time multimedia data in a bandwidth-conservative manner have not been addressed. In this thesis, a CHEK Proxy Framework (CPF) has been developed using a Proxy solution to address these problems. By caching, Proxy has become a traditional solution in reducing user-perceived latency and network resource requirements in the network. CPF helps to create a middle-tier Application platform Proxy transparently and dynamically in the client sub-network to execute the sharable section of any server Application codes. This is as the Application Proxy. Besides caching static web contents, this local Application Proxy helps to deliver real-time multimedia data on behalf of the remote server with lower bandwidth and better performance. CPF helps to minimize WAN connections while maximizing LAN interactions by multiplexing and de-multiplexing client requests through to the server via the Proxy. As a result, the central server is made more reliable and scalable. The monitoring and management of the CHEK distributed objects is also made easier through the use of the CHEK Management Console (CMC). CMC displays the inter-relationships between the distributed objects and their status information on a GUI-based control panel for ease of management. With its dynamic and transparent features, software verslOrung and maintenance problems are readily overcome. CPF has been shown to be useful in most client/server Applications, particularly those of broadcasting and collaborative nature such as video broadcastings and chat systems. CPF solves the network congestion and server overloading problems with the presence of a middle-tier Proxy Application platform which is allocated in the client sub-network with no manual configurations.
Wu Chou - One of the best experts on this subject based on the ideXlab platform.
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IEEE SCC (2) - WIPdroid A Two-way Web Services and Real-time Communication Enabled Mobile Computing Platform for Distributed Services Computing
2008 IEEE International Conference on Services Computing, 2008Co-Authors: Wu ChouAbstract:We present a mobile distributed computing platform, WIPdroid, for distributed services computing in mobile environment with real-time communication capabilities. It is based on WIP, Web services session initiation protocol, for real-time service-oriented communication over IP. It integrates the emerging mobile endpoint platform, Android, from Google's initiative of open handset alliance (OHA). The WIP component of WIPdroid supports Web services based communication over IP. But most importantly, it transforms WIPdroid into a mobile SOA Web services endpoint. Applications developed on WIPdroid can be exposed and enabled by two-way Web services. This makes WIPdroid well suited for distributed computing and SOA based Applications, such as communication enabled business process (CEBP) and software-as-a-service (SaaS). It also leads to a new type of dual-mode phone, with one communication mode from the binding with the physical mobile environment, e.g. GSM, CDMA, 3G, etc., and one fully web services enabled, service-oriented communication over IP mode from WIP. A prototype WIPdroid mobile computing platform is developed and tested. In order to support advance Web services capabilities on mobile endpoints, we developed an endpoint-edition of two-way Web services Application Proxy (2SAP) which has a small memory footprint (2-3 MB) and can be hosted on a mobile endpoint/handset, e.g. smart phone and PDA.
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ICWS - Two-way Web service: from interface design to interface verification
IEEE International Conference on Web Services (ICWS'05), 2005Co-Authors: Wu ChouAbstract:In this paper, we introduce a theoretical framework for two-way Web service (WS) interaction and interface design based on the concepts of operation reversal and XML type generalization. Under this theoretical framework, two generic types of interface solutions in two-way WS interaction, i.e. tightly coupled (TC) interface and loosely coupled (LC) interface, are formally defined and studied. The proposed theoretical framework is used to design, derive and verify WS interface for full duplex two-way WS interaction. An algorithm of interface verification is described that allows effective WS interface design and verification to support asynchronous two-way WS operation and event notification. The interface verification algorithm in our approach utilizes verification by derivation and verification by content to validate the client interface in two-way WS interaction. Use case studies are performed for both TC and LC interface solutions. A generic infrastructure based on two-way Web service Application Proxy (2SAP) is described and implemented. The proposed approach is applied to Applications of realizing ECMA-348 for WS enablement of telecommunication.