The Experts below are selected from a list of 297 Experts worldwide ranked by ideXlab platform
Chingter Chang - One of the best experts on this subject based on the ideXlab platform.
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an Acquisition Policy for a single item multi supplier system with real world constraints
Applied Mathematical Modelling, 2006Co-Authors: Chingter ChangAbstract:Abstract This paper proposes an exact Acquisition Policy for solving the single-item multi-supplier problem with real-world constraints. Compared with the model of Rosenblatt et al. [Note. An Acquisition Policy for a single item multi-supplier system, Manage. Sci. 44 (1998) S96–S100], the proposed method has contributions in that the global optimal solutions can be obtained to indicate the best Acquisition Policy, and real-world constraints can easily be added as appropriate for real-world situations. In addition, the benefits of price-quantity discount (PQD) under conditions of the single item muti-supplier system are also considered in the paper.
Depei Qian - One of the best experts on this subject based on the ideXlab platform.
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GCC - ORSP: An Efficient Resource Acquisition Policy for Peer-to-Peer Mesh Streaming Systems
2010 Ninth International Conference on Grid and Cloud Computing, 2010Co-Authors: Feng Xiao, Zhongzhi Luan, Rui Wang, Depei QianAbstract:As a superior approach for peer-to-peer (P2P) streaming live media, mesh-based overlay has made much success due to its potential scalability and ease of deployment. Peers in mesh streaming systems employ a swarming content delivery mechanism to exchange resources. However, the limited availability of new content heavily affects the quality of delivered stream. Aiming at leveraging and optimizing the resources of participating peers to distribute contents, we propose ORSP, an efficient resource Acquisition Policy for mesh content distribution services. Instead of choosing coming stream randomly with limited bandwidth, ORSP (i) instructs each peer to derive a combination of stream from a gathered subset of peers that maximizes the delivered stream, and (ii) guarantees that peers with more available stream are firstly selected to provide stream in order to balance the whole network resources. Simulation results show that ORSP optimizes stream selection manner that enables peers to obtain more available resources, distribution of system resources is prone to be relatively average that helps to decrease the node failure rate for node join in and drop out, accompanied with a little increased source-to-end delay to some degree.
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ORSP: An Efficient Resource Acquisition Policy for Peer-to-Peer Mesh Streaming Systems
2010 Ninth International Conference on Grid and Cloud Computing, 2010Co-Authors: Feng Xiao, Zhongzhi Luan, Rui Wang, Depei QianAbstract:As a superior approach for peer-to-peer (P2P) streaming live media, mesh-based overlay has made much success due to its potential scalability and ease of deployment. Peers in mesh streaming systems employ a swarming content delivery mechanism to exchange resources. However, the limited availability of new content heavily affects the quality of delivered stream. Aiming at leveraging and optimizing the resources of participating peers to distribute contents, we propose ORSP, an efficient resource Acquisition Policy for mesh content distribution services. Instead of choosing coming stream randomly with limited bandwidth, ORSP (i) instructs each peer to derive a combination of stream from a gathered subset of peers that maximizes the delivered stream, and (ii) guarantees that peers with more available stream are firstly selected to provide stream in order to balance the whole network resources. Simulation results show that ORSP optimizes stream selection manner that enables peers to obtain more available resources, distribution of system resources is prone to be relatively average that helps to decrease the node failure rate for node join in and drop out, accompanied with a little increased source-to-end delay to some degree.
Seong Wook Hwang - One of the best experts on this subject based on the ideXlab platform.
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an integrated Acquisition Policy for supplier selection and lot sizing considering total quantity discounts and a quality constraint
Transportation Research Part E-logistics and Transportation Review, 2018Co-Authors: Xin Li, Jose A Ventura, Barbara B Venegas, Sang Jin Kweon, Seong Wook HwangAbstract:We consider a two-stage supply chain where a buyer purchases a product from multiple capacitated suppliers to satisfy a constant demand rate over a finite planning horizon. Suppliers have different perfect rates and offer total quantity discounts. The buyer selects suppliers and allocates orders to them that satisfy a minimum average quality level. A mathematical model is proposed with the objective on minimizing the total cost per time unit. The model is solved by dualizing the quality constraint. The relaxed model is solved by an efficient dynamic programming algorithm. The subgradient method is used to solve the dual problem.
Feng Xiao - One of the best experts on this subject based on the ideXlab platform.
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GCC - ORSP: An Efficient Resource Acquisition Policy for Peer-to-Peer Mesh Streaming Systems
2010 Ninth International Conference on Grid and Cloud Computing, 2010Co-Authors: Feng Xiao, Zhongzhi Luan, Rui Wang, Depei QianAbstract:As a superior approach for peer-to-peer (P2P) streaming live media, mesh-based overlay has made much success due to its potential scalability and ease of deployment. Peers in mesh streaming systems employ a swarming content delivery mechanism to exchange resources. However, the limited availability of new content heavily affects the quality of delivered stream. Aiming at leveraging and optimizing the resources of participating peers to distribute contents, we propose ORSP, an efficient resource Acquisition Policy for mesh content distribution services. Instead of choosing coming stream randomly with limited bandwidth, ORSP (i) instructs each peer to derive a combination of stream from a gathered subset of peers that maximizes the delivered stream, and (ii) guarantees that peers with more available stream are firstly selected to provide stream in order to balance the whole network resources. Simulation results show that ORSP optimizes stream selection manner that enables peers to obtain more available resources, distribution of system resources is prone to be relatively average that helps to decrease the node failure rate for node join in and drop out, accompanied with a little increased source-to-end delay to some degree.
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ORSP: An Efficient Resource Acquisition Policy for Peer-to-Peer Mesh Streaming Systems
2010 Ninth International Conference on Grid and Cloud Computing, 2010Co-Authors: Feng Xiao, Zhongzhi Luan, Rui Wang, Depei QianAbstract:As a superior approach for peer-to-peer (P2P) streaming live media, mesh-based overlay has made much success due to its potential scalability and ease of deployment. Peers in mesh streaming systems employ a swarming content delivery mechanism to exchange resources. However, the limited availability of new content heavily affects the quality of delivered stream. Aiming at leveraging and optimizing the resources of participating peers to distribute contents, we propose ORSP, an efficient resource Acquisition Policy for mesh content distribution services. Instead of choosing coming stream randomly with limited bandwidth, ORSP (i) instructs each peer to derive a combination of stream from a gathered subset of peers that maximizes the delivered stream, and (ii) guarantees that peers with more available stream are firstly selected to provide stream in order to balance the whole network resources. Simulation results show that ORSP optimizes stream selection manner that enables peers to obtain more available resources, distribution of system resources is prone to be relatively average that helps to decrease the node failure rate for node join in and drop out, accompanied with a little increased source-to-end delay to some degree.
David R. Carey - One of the best experts on this subject based on the ideXlab platform.
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Army repair depot automated test system modernization
IEEE Instrumentation & Measurement Magazine, 2011Co-Authors: David R. CareyAbstract:This paper analyzes the problem and presents a plan for modernization of ATS at the Army depots that satisfies Army Regulation, AR750-43, and the U.S. Department of Defense (DoD) ATS Acquisition Policy.
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Tobyhanna army depot Automated Test System modernization
IEEE Aerospace and Electronic Systems Magazine, 2011Co-Authors: David R. CareyAbstract:During the last four decades the number of Automated Test Systems (ATS) has experienced tremendous growth at Tobyhanna Army Depot (TYAD). This is characterized in the proliferation through Base Realignment and Closure Acquisition and in-house development of a wide variety of general and special-purpose ATS - to date, there are 94 unique ATS and a total of 230 ATS. With advancing technology and increasingly complex electronic systems, unique ATS has become a problem of maintenance test strategies at the depot; given the high costs of modernizing or replacing ATS and its potential effect on meeting mission success requirements. The aging testers at TYAD are becoming increasingly out-of-date and more difficult to support. When the testers do not work properly, maintenance can suffer and mission readiness can be adversely affected. This will analyze the problem and present a plan for modernization of ATS at TYAD that satisfies Army Regulation, AR750-43, and DoD ATS Acquisition Policy.
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Tobyhanna army depot automated test system modernization
2010 IEEE AUTOTESTCON, 2010Co-Authors: David R. CareyAbstract:During the last four decades the number of Automated Test Systems (ATS) has experienced tremendous growth at Tobyhanna Army Depot (TYAD). This is characterized in the proliferation through Base Realignment and Closure Acquisition and in-house development of a wide variety of general and special purpose ATS - to date there are 94 unique ATS and a total of 230 ATS. With advancing technology and increasingly complex electronic systems, unique ATS has become a problem of maintenance test strategies at the depot; given the high costs of modernizing or replacing ATS and its potential effect on meeting mission success requirements. The aging testers at TYAD are becoming increasingly out of date and more difficult to support. When the testers do not work properly, maintenance can suffer and mission readiness can be adversely affected. This paper will analyze the problem and present a plan for modernization of ATS at TYAD that satisfies Army Regulation, AR750-43, and DOD ATS Acquisition Policy.