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2007 International Conference on Parallel Processing Workshops (ICPPW 2007)最新文献

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CIVIC: a Hypervisor based Virtual Computing Environment CIVIC:基于Hypervisor的虚拟计算环境
2007 International Conference on Parallel Processing Workshops (ICPPW 2007) Pub Date : 2007-09-10 DOI: 10.1109/ICPPW.2007.28
J. Huai, Qin Li, Chunming Hu
{"title":"CIVIC: a Hypervisor based Virtual Computing Environment","authors":"J. Huai, Qin Li, Chunming Hu","doi":"10.1109/ICPPW.2007.28","DOIUrl":"https://doi.org/10.1109/ICPPW.2007.28","url":null,"abstract":"The purpose of virtual computing environment is to improve resource utilization by providing a unified integrated operating platform for users and applications based on aggregation of heterogeneous and autonomous resources. With the rapid development in recent years, hypervisor technologies have become mature and comprehensive with four features, including transparency, isolation, encapsulation and manageability. In this paper, a hypervisor based computing infrastructure, named CIVIC, is proposed. Compared with existing approaches, CIVIC may benefit in several ways. It offers separated and isolated computing environment for end users, and realizes hardware and software consolidation and centralized management. Beside this, CIVIC provides a transparent view to upper layer applications, by hiding the dynamicity, distribution and heterogeneousness of underlying resources. Performance of the infrastructure is evaluated by an initial deployment and experiment. The result shows that CIVIC can facilitate installation, configuration and deployment of network-oriented applications.","PeriodicalId":367703,"journal":{"name":"2007 International Conference on Parallel Processing Workshops (ICPPW 2007)","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-09-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122683629","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 34
A Case Study: Online Operation Guidance for Real-time Distance Education Environment 以实时远程教育环境下的在线操作指导为例
2007 International Conference on Parallel Processing Workshops (ICPPW 2007) Pub Date : 2007-09-10 DOI: 10.1109/ICPPW.2007.7
A. He
{"title":"A Case Study: Online Operation Guidance for Real-time Distance Education Environment","authors":"A. He","doi":"10.1109/ICPPW.2007.7","DOIUrl":"https://doi.org/10.1109/ICPPW.2007.7","url":null,"abstract":"Computer support system is useful for improving the effect of real time and interactive distance education activities especially in the case that every participant uses his own computer connected to the system. A problem in such a distance education environment is that the participants need information about the usage of the support system. So it is important that the system can support the participants to learn the system itself. Online documents about the system is not so good for easily guiding the participants to operate the system. This paper reports the result of a case study on the online operation guidance of a real time and interactive distance lecture support system. The effectiveness of this e proposal has been confirmed by experiment.","PeriodicalId":367703,"journal":{"name":"2007 International Conference on Parallel Processing Workshops (ICPPW 2007)","volume":"56 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-09-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122447761","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
On Energy Efficient Communications over Rayleigh Fading Channel with Delivery Rate and Delay Constraints in Wireless Sensor Networks 无线传感器网络中具有传输速率和延迟约束的瑞利衰落信道节能通信研究
2007 International Conference on Parallel Processing Workshops (ICPPW 2007) Pub Date : 2007-09-10 DOI: 10.1109/ICPPW.2007.62
Xiaohui Lin, Yu-Kwong Kwok
{"title":"On Energy Efficient Communications over Rayleigh Fading Channel with Delivery Rate and Delay Constraints in Wireless Sensor Networks","authors":"Xiaohui Lin, Yu-Kwong Kwok","doi":"10.1109/ICPPW.2007.62","DOIUrl":"https://doi.org/10.1109/ICPPW.2007.62","url":null,"abstract":"There is a plethora of recent research on high performance wireless communications using a cross-layer approach in that adaptive modulation and coding (AMC) schemes at wireless physical layer are used for combating time varying channel fading and enhance link throughput. However, in a wireless sensor network, transmitting packets over deep fading channel can incur excessive energy consumption due to the usage of stronger forwarding error code (FEC) or more robust modulation mode. To avoid such energy inefficient transmission, a straightforward approach is to temporarily buffer packets when the channel is in deep fading, until the channel quality recovers. Unfortunately, packet buffering may lead to communication latency and buffer overflow, which, in turn, can result in severe degradation in communication performance. Specifically, to improve the buffering approach, we need to address two challenging issues: (1) how long should we buffer the packets?, and (2) how to choose the optimum channel transmission threshold above which to transmit the buffered packets? In this paper, by using discrete-time queuing model, we analyze the effects of Rayleigh fading over AMC- based communications in a wireless sensor network. We then analytically derive the packet delivery rate and average delay. Guided by these numerical results, we can determine the most energy-efficient operation modes under different transmission environments. Extensive simulation results on NS-2 have validated the analytical results, and indicates that under these modes, we can achieve as much as 40% reduction in energy dissipation.","PeriodicalId":367703,"journal":{"name":"2007 International Conference on Parallel Processing Workshops (ICPPW 2007)","volume":"208 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-09-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122848812","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Memory Optimization for Embedded Systems Running H.264/AVC Video Encoder 运行H.264/AVC视频编码器的嵌入式系统内存优化
2007 International Conference on Parallel Processing Workshops (ICPPW 2007) Pub Date : 2007-09-10 DOI: 10.1109/ICPPW.2007.53
Tao Sheng, M. Sarem, Jing-li Zhou, Shuai Hu
{"title":"Memory Optimization for Embedded Systems Running H.264/AVC Video Encoder","authors":"Tao Sheng, M. Sarem, Jing-li Zhou, Shuai Hu","doi":"10.1109/ICPPW.2007.53","DOIUrl":"https://doi.org/10.1109/ICPPW.2007.53","url":null,"abstract":"The computing power of microprocessors has exponentially increased in the past few decades, so the support to computation intensive multimedia applications has increased too. With such improved computing power, memory subsystem deficiency becomes the major barrier to support video encoder on digital signal processor (DSP). H.264/AVC becomes the next generation video codec for embedded systems. In this paper, our focus is to enhance the encoding performance of H.264/AVC through memory optimization for DSP. The experimental results show that the proposed solutions can improve the H.264/AVC encoding speed by almost 30%. Also, the memory optimization method presented in this paper has been integrated into the developed embedded H.264/AVC video encoder. The encoder can perform real time encoding under four channels common intermediate format (CIF) frame size, which is the typical requirement of networked video surveillance applications nowadays.","PeriodicalId":367703,"journal":{"name":"2007 International Conference on Parallel Processing Workshops (ICPPW 2007)","volume":"47 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-09-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116254304","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 5
An Experimental Study on Peer Selection in a P2P Network over PlanetLab 基于PlanetLab的P2P网络中节点选择的实验研究
2007 International Conference on Parallel Processing Workshops (ICPPW 2007) Pub Date : 2007-09-10 DOI: 10.1109/ICPPW.2007.24
F. Xhafa, L. Barolli, Raul Fernandez, T. Daradoumis
{"title":"An Experimental Study on Peer Selection in a P2P Network over PlanetLab","authors":"F. Xhafa, L. Barolli, Raul Fernandez, T. Daradoumis","doi":"10.1109/ICPPW.2007.24","DOIUrl":"https://doi.org/10.1109/ICPPW.2007.24","url":null,"abstract":"Peer selection is an important aspect in many P2P applications requiring efficient assignment and execution of jobs to peer nodes and search and file transfer, among others. Due to increasing interest of using P2P systems for distributed computing, peer selection is taking relevance and several models have been proposed in the P2P literature. Yet, there are very few experimental studies for peer selection in P2P networks deployed in real large scale networks. In this work we present an experimental study that aims at revealing empirical information about the efficiency of selecting peer nodes in a P2P network when deployed in a real geographically distributed network. To this end, we have used a JXTA-based P2P platform deployed in Planet- Lab, a planetary scale infrastructure, and have empirically evaluated several peer selection models. Our experimental study showed that in order to achieve efficient P2P applications, appropriate selection model should be used according to the characteristics of the application.","PeriodicalId":367703,"journal":{"name":"2007 International Conference on Parallel Processing Workshops (ICPPW 2007)","volume":"47 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-09-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124308900","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
KQStream: Kindred-Based QoS-Aware Live Media Streaming in Heterogeneous Peer-to-Peer Environments KQStream:异构点对点环境中基于亲属的qos感知实时媒体流
2007 International Conference on Parallel Processing Workshops (ICPPW 2007) Pub Date : 2007-09-10 DOI: 10.1109/ICPPW.2007.48
Yuan He, T. Gu, Jiang Guo, Jingyao Dai
{"title":"KQStream: Kindred-Based QoS-Aware Live Media Streaming in Heterogeneous Peer-to-Peer Environments","authors":"Yuan He, T. Gu, Jiang Guo, Jingyao Dai","doi":"10.1109/ICPPW.2007.48","DOIUrl":"https://doi.org/10.1109/ICPPW.2007.48","url":null,"abstract":"This paper presents the design of a Kindred-based QoS-aware Live Media Streaming (KQStream) system in heterogeneous peer-to-peer environments. Motivated by the Multiple Description Coding technique, we propose a novel kindred-based approach to construct a peer-to-peer overlay topology. To achieve QoS-awareness during the streaming process, we propose a dynamic QoS-aware regulating technique which takes into account of user's preference, network bandwidth and buffer size. With the integration of the two proposed techniques, KQStream provides more flexibility in heterogeneous peer-to-peer environments and configurable playback with dynamic QoS-aware regulating.","PeriodicalId":367703,"journal":{"name":"2007 International Conference on Parallel Processing Workshops (ICPPW 2007)","volume":"61 43","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-09-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134226664","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 3
Cultivating Operating System Process Concept with Card Game 用纸牌游戏培养操作系统过程概念
2007 International Conference on Parallel Processing Workshops (ICPPW 2007) Pub Date : 2007-09-10 DOI: 10.1109/ICPPW.2007.33
Wen-Chih Chang, Yi-Lung Chen
{"title":"Cultivating Operating System Process Concept with Card Game","authors":"Wen-Chih Chang, Yi-Lung Chen","doi":"10.1109/ICPPW.2007.33","DOIUrl":"https://doi.org/10.1109/ICPPW.2007.33","url":null,"abstract":"Game can be one of the educational tools. With the interactivity and competition, learners will have high motivation to play games. In order to express some abstract concept like operation system process, we designed a card game which subject is operation system process diagram. It is too hard to realize the real process lifecycle. For some students, it is uneasy to find solid examples about operating system. We hope game launch high learning motivation and interaction in operating system. Learners can experience some experience in operation system process lifecycle.","PeriodicalId":367703,"journal":{"name":"2007 International Conference on Parallel Processing Workshops (ICPPW 2007)","volume":"288 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-09-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125004342","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Sensibility retrieval method that uses amount of physical feature of traditional craft object 利用传统工艺对象的大量物理特征的敏感性检索方法
2007 International Conference on Parallel Processing Workshops (ICPPW 2007) Pub Date : 2007-09-10 DOI: 10.1109/ICPPW.2007.75
A. Miyakawa, Kaoru Sugita, Y. Shibata
{"title":"Sensibility retrieval method that uses amount of physical feature of traditional craft object","authors":"A. Miyakawa, Kaoru Sugita, Y. Shibata","doi":"10.1109/ICPPW.2007.75","DOIUrl":"https://doi.org/10.1109/ICPPW.2007.75","url":null,"abstract":"In this paper, we propose a Kansei* retrieval method based on the design pattern of traditional Japanese crafting object to provide a user with the desired presentation space in digital traditional Japanese crafting system. The visual quantitative feature values are extracted by using visual pattern image coding (VPIC). These values include the total number, the frequency, the dispersion rate and the deviation rate for different edges. The quantitative feature values for traditional Japanese crafting objects are registered in the multimedia database and the relation between Kansei words and the visual feature of traditional Japanese crafting objects are analyzed by using the questionnaire. Then, the visual features are compared with the quantitative feature values. Through the above process, we can find the relation between the design pattern components and edge types using VPIC. By finding this relation, the Kansei retrieval method can be realized.","PeriodicalId":367703,"journal":{"name":"2007 International Conference on Parallel Processing Workshops (ICPPW 2007)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-09-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131069677","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Fast Route Optimization for Dynamic Nested NEMO 动态嵌套NEMO的快速路径优化
2007 International Conference on Parallel Processing Workshops (ICPPW 2007) Pub Date : 2007-09-10 DOI: 10.1109/ICPPW.2007.45
Jae-Kwon Seo, Sung-Hyun Nam, Kyung-Geun Lee
{"title":"Fast Route Optimization for Dynamic Nested NEMO","authors":"Jae-Kwon Seo, Sung-Hyun Nam, Kyung-Geun Lee","doi":"10.1109/ICPPW.2007.45","DOIUrl":"https://doi.org/10.1109/ICPPW.2007.45","url":null,"abstract":"As wireless communication and terminal technologies develop, the mobility of users rapidly increases. The users in this dynamic state also want to connect their devices and to receive seamlessly services anywhere, anytime. Standard groups therefore progress the research and standardization for 'mobility support'. Network Mobility (NEMO) proposed by IETF focuses on the condition where the entire network moves. However, in the NEMO basic support protocol', the tunneling overheads increase and the pinball-routing problem occurs as the levels of nesting of a mobile network increase. Thus, various schemes have been proposed under the route optimization of the nested NEMO. However, the existing schemes have a long convergence time in route optimization after handoff. In addition, if the levels of nesting are changed, the communication is disrupted. Therefore, we propose a fast route optimization to support real-time applications even if the levels of nesting of a mobile network are dynamically changed.","PeriodicalId":367703,"journal":{"name":"2007 International Conference on Parallel Processing Workshops (ICPPW 2007)","volume":"37 1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-09-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122512724","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 5
A Novel Peer-to-Peer Overlay for Live Media Broadcasting 一种新的点对点媒体直播覆盖
2007 International Conference on Parallel Processing Workshops (ICPPW 2007) Pub Date : 2007-09-10 DOI: 10.1109/ICPPW.2007.12
Hung-Chang Hsiao, Hao Liao
{"title":"A Novel Peer-to-Peer Overlay for Live Media Broadcasting","authors":"Hung-Chang Hsiao, Hao Liao","doi":"10.1109/ICPPW.2007.12","DOIUrl":"https://doi.org/10.1109/ICPPW.2007.12","url":null,"abstract":"Most peer-to-peer live multimedia streaming systems either rely on an overlay infrastructure to deliver media data or request participating peers to search and fetch their demanded data without relying on a dedicated overlay structure. While the former approach, namely the infrastructure-centric approach, may require sophisticated construction and maintenance for an overlay network with good quality, the latter, called the infrastructure-less approach, may take significant overheads in searching and caching the demanded contents. In this paper, we propose a hybrid design that takes both advantages of the infrastructure-centric and infrastructure-less approaches. The performance of our design is efficient and mathematically provable. The simulation results also confirm the efficiency of our design.","PeriodicalId":367703,"journal":{"name":"2007 International Conference on Parallel Processing Workshops (ICPPW 2007)","volume":"166 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-09-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115757770","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
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