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Proceedings Twenty-First Annual International Computer Software and Applications Conference (COMPSAC'97)最新文献

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Design and implementation of a real-time multimedia presentation system using RTP 基于RTP的实时多媒体演示系统的设计与实现
Proceedings Twenty-First Annual International Computer Software and Applications Conference (COMPSAC'97) Pub Date : 1997-08-11 DOI: 10.1109/CMPSAC.1997.625003
Sridevi Palacharla, A. Karmouch, S. Mahmoud
{"title":"Design and implementation of a real-time multimedia presentation system using RTP","authors":"Sridevi Palacharla, A. Karmouch, S. Mahmoud","doi":"10.1109/CMPSAC.1997.625003","DOIUrl":"https://doi.org/10.1109/CMPSAC.1997.625003","url":null,"abstract":"A new class of protocols like RTP, RTSP and RSVP are tailoring today's packet networks for streaming real time multimedia data that once carried only non real time traffic. Multimedia networking is now possible with the existing network infrastructure. We describe a real time multimedia presentation system for media on demand over the Internet. It uses RTP and is capable of real time video/audio transmission. Our system consists of servers that maintain video/audio clips and clients that retrieve and present them to the users. It provides VCR like control features for user interactivity during playback. The paper describes the system architecture, and the communication protocols, along with media synchronization and dynamic QoS control mechanisms.","PeriodicalId":199960,"journal":{"name":"Proceedings Twenty-First Annual International Computer Software and Applications Conference (COMPSAC'97)","volume":" 8","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1997-08-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"120933940","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: 15
Regression containment through source change isolation 通过源更改隔离进行回归遏制
Proceedings Twenty-First Annual International Computer Software and Applications Conference (COMPSAC'97) Pub Date : 1997-08-11 DOI: 10.1109/CMPSAC.1997.625082
B. Ness, V. Ngo
{"title":"Regression containment through source change isolation","authors":"B. Ness, V. Ngo","doi":"10.1109/CMPSAC.1997.625082","DOIUrl":"https://doi.org/10.1109/CMPSAC.1997.625082","url":null,"abstract":"Effective regression containment is an important factor in the design of development and testing processes for large software projects, especially when many developers are doing concurrent work on a common set of sources. Source change isolation provides an inexpensive, alternative to mechanical analytical methods for identifying the cause of software regressions. It also provides the advantage of enabling regressions to be eliminated by reversing the effect of source changes that introduced errant behavior, without the need to write new code, and without halting other development work on the same software. Deliverability is also improved.","PeriodicalId":199960,"journal":{"name":"Proceedings Twenty-First Annual International Computer Software and Applications Conference (COMPSAC'97)","volume":"204 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1997-08-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127145691","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: 18
Compiling process algebraic specifications into timed automata 编译过程代数规范成时间自动机
Proceedings Twenty-First Annual International Computer Software and Applications Conference (COMPSAC'97) Pub Date : 1997-08-11 DOI: 10.1109/CMPSAC.1997.624976
Carl K. Chang, Yi-Te Tseng, U. Buy
{"title":"Compiling process algebraic specifications into timed automata","authors":"Carl K. Chang, Yi-Te Tseng, U. Buy","doi":"10.1109/CMPSAC.1997.624976","DOIUrl":"https://doi.org/10.1109/CMPSAC.1997.624976","url":null,"abstract":"The authors present LTP (Language of Timed Processes), a process-algebra-based specification language, for the specification of real-time applications. In addition to timing requirements involving the execution time of individual computations, LTP can specify timing constraints that are associated with process descriptions: periodic constraints and sporadic constraints. Periodic processes (e.g. sensors) are usually time-driven; sporadic processes are usually event-driven. In LTP common real-time constraints such as delays, deadlines, and timeouts can be modeled conveniently. They specifically introduce a new construct for modeling periodic behavior, which is quite common in real-time applications. They validate LTP specifications by translating from LTP to a kind of timed automata that is amenable to well-known model checking techniques. Although the models of LTP specifications, commonly known as timed transition systems, are usually infinite because of the presence of time, the translation results in a finite representation by which automatic verification is possible.","PeriodicalId":199960,"journal":{"name":"Proceedings Twenty-First Annual International Computer Software and Applications Conference (COMPSAC'97)","volume":"75 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1997-08-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124875204","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
On the effect of recovery block scheme on system performance 讨论恢复块方案对系统性能的影响
Proceedings Twenty-First Annual International Computer Software and Applications Conference (COMPSAC'97) Pub Date : 1997-08-11 DOI: 10.1109/CMPSAC.1997.624758
O. Abulnaja, S. Hosseini, K. Vairavan
{"title":"On the effect of recovery block scheme on system performance","authors":"O. Abulnaja, S. Hosseini, K. Vairavan","doi":"10.1109/CMPSAC.1997.624758","DOIUrl":"https://doi.org/10.1109/CMPSAC.1997.624758","url":null,"abstract":"The authors study the effect of the traditional sequential recovery block (SRB) and the distributed recovery block (DRB) schemes on system performance (system average throughput, system mean response time, and percentage of tasks of a certain type completed) for two new software fault tolerant scheduling algorithms-sequential recovery block round-robin (SRBRR) scheduling algorithm and distributed recovery block round-robin (DRBRR) scheduling algorithm.","PeriodicalId":199960,"journal":{"name":"Proceedings Twenty-First Annual International Computer Software and Applications Conference (COMPSAC'97)","volume":"43 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1997-08-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126139252","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
Farming methodology for TMN platform independent class repository design 面向TMN平台独立类存储库设计的耕种方法
Proceedings Twenty-First Annual International Computer Software and Applications Conference (COMPSAC'97) Pub Date : 1997-08-11 DOI: 10.1109/CMPSAC.1997.624990
Soo-Hyun Park, Sang-Hoon Park, D. Baik
{"title":"Farming methodology for TMN platform independent class repository design","authors":"Soo-Hyun Park, Sang-Hoon Park, D. Baik","doi":"10.1109/CMPSAC.1997.624990","DOIUrl":"https://doi.org/10.1109/CMPSAC.1997.624990","url":null,"abstract":"As the agents in a TMN system are constructed based on different platforms, there are some problems in the development, maintenance and administration of classes in distributed objects (DO). To solve these problems, the paper suggests the Farming methodology which originated from the network computing concept. With the methodology, redundant software and data components in the distributed objects are moved to a platform independent class repository (PICR) in the form of componentware. When the PICR is constructed, several aspects of TMN are considered. After setting up the framework of DO, some small componentwares are loaded dynamically to DO, while others are loaded statically. DOs can self-adapt componentware for the evolution of a network environment while the TMN system is running.","PeriodicalId":199960,"journal":{"name":"Proceedings Twenty-First Annual International Computer Software and Applications Conference (COMPSAC'97)","volume":"34 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1997-08-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123578003","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: 4
Software architecture evaluation panel 软件架构评估小组
Proceedings Twenty-First Annual International Computer Software and Applications Conference (COMPSAC'97) Pub Date : 1997-08-11 DOI: 10.1109/CMPSAC.1997.624780
M. Barbacci, R. Kazman
{"title":"Software architecture evaluation panel","authors":"M. Barbacci, R. Kazman","doi":"10.1109/CMPSAC.1997.624780","DOIUrl":"https://doi.org/10.1109/CMPSAC.1997.624780","url":null,"abstract":"Software architectural evaluation, while still in its infancy as a discipline, promises large dividends. It is important to be able to determine the quality characteristics of a system-properties like modifiability, reliability and performance-before the system is built. This kind of analysis can help to evaluate a design or to choose among competing designs. The objective is to discuss what can be evaluated, and to identify the current state of the art in architectural evaluation. For example, the authors would like to identify quality attributes that can be quantitatively characterized, measured, or only intuitively reviewed and evaluated. They also attempt to identify a number of pressing research goals motivated by the needs of industry.","PeriodicalId":199960,"journal":{"name":"Proceedings Twenty-First Annual International Computer Software and Applications Conference (COMPSAC'97)","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1997-08-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116152833","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
Trends in software technology 软件技术的发展趋势
Proceedings Twenty-First Annual International Computer Software and Applications Conference (COMPSAC'97) Pub Date : 1997-08-11 DOI: 10.1109/CMPSAC.1997.624785
W. Tsai
{"title":"Trends in software technology","authors":"W. Tsai","doi":"10.1109/CMPSAC.1997.624785","DOIUrl":"https://doi.org/10.1109/CMPSAC.1997.624785","url":null,"abstract":"Software has made more progress during the last few years than any years before that. New technology is coming every day and it is impossible for every one to catch up with it. Two technologies and their impacts on software development are presented: software reusability, which can significantly improve software productivity; and Internet computing, which provides a new testbed for software applications as well as their development. Software reusability and Internet computing change the way software will be developed. We discuss some of their impacts.","PeriodicalId":199960,"journal":{"name":"Proceedings Twenty-First Annual International Computer Software and Applications Conference (COMPSAC'97)","volume":"34 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1997-08-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129587584","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: 2
Program understanding needs during corrective maintenance of large scale software 在大型软件的纠正性维护过程中，程序理解需求
Proceedings Twenty-First Annual International Computer Software and Applications Conference (COMPSAC'97) Pub Date : 1997-08-11 DOI: 10.1109/CMPSAC.1997.625084
A. Andrews, A. M. Vans
{"title":"Program understanding needs during corrective maintenance of large scale software","authors":"A. Andrews, A. M. Vans","doi":"10.1109/CMPSAC.1997.625084","DOIUrl":"https://doi.org/10.1109/CMPSAC.1997.625084","url":null,"abstract":"We report on a software understanding field study during corrective maintenance of large-scale software by professional software maintenance engineers. We explain the general understanding process, the information needs of these software engineers during their tasks, and the tool capabilities that would help them to be more productive.","PeriodicalId":199960,"journal":{"name":"Proceedings Twenty-First Annual International Computer Software and Applications Conference (COMPSAC'97)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1997-08-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129869324","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: 20
Strategies for implementing distributed query algorithms over high-speed, bandwidth-on-demand, wide area networks 在高速、按需带宽、广域网上实现分布式查询算法的策略
Proceedings Twenty-First Annual International Computer Software and Applications Conference (COMPSAC'97) Pub Date : 1997-08-11 DOI: 10.1109/CMPSAC.1997.625072
W. Perrizo, Zhili Zhang, S. Krebsbach
{"title":"Strategies for implementing distributed query algorithms over high-speed, bandwidth-on-demand, wide area networks","authors":"W. Perrizo, Zhili Zhang, S. Krebsbach","doi":"10.1109/CMPSAC.1997.625072","DOIUrl":"https://doi.org/10.1109/CMPSAC.1997.625072","url":null,"abstract":"Because of the trend toward high bandwidth networks, current distributed query processing algorithms need to be modified or redesigned. Existing distributed query processing techniques must be refocused to reduce latency delay, exploit bandwidth-on-demand, handle multicast issues, and reduce the usual transmission and local processing delays. The authors propose a set of strategies designed to help the implementers of distributed query algorithms on high speed, bandwidth-on-demand, wide area networks. A distributed join algorithm using these design strategies is developed. Using an analytical model they show that the time cost for the proposed new distributed join algorithm is only slightly above that of a theoretical lower bound. Thus, they conclude that the algorithm exhibits near optimal performance and should be considered by implementers of distributed database systems on high-speed bandwidth-on-demand networks.","PeriodicalId":199960,"journal":{"name":"Proceedings Twenty-First Annual International Computer Software and Applications Conference (COMPSAC'97)","volume":"19 20","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1997-08-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"113963242","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
Performance characterization of forwarding strategies in personal communication networks 个人通信网络中转发策略的性能表征
Proceedings Twenty-First Annual International Computer Software and Applications Conference (COMPSAC'97) Pub Date : 1997-08-11 DOI: 10.1109/CMPSAC.1997.624776
I. Chen, T. Chen, Chiang Lee
{"title":"Performance characterization of forwarding strategies in personal communication networks","authors":"I. Chen, T. Chen, Chiang Lee","doi":"10.1109/CMPSAC.1997.624776","DOIUrl":"https://doi.org/10.1109/CMPSAC.1997.624776","url":null,"abstract":"The paper presents a framework for modeling and evaluating the performance of forwarding strategies in a personal communication services (PCS) mobile network. A forwarding strategy in the PCS network can be implemented by two mechanisms: a forwarding operation which follows a chain of databases to locate a mobile user, and a resetting operation which updates the databases in the chain so that the current location of a mobile user can be known directly without having to follow a chain of databases. We consider the PCS network as a server whose function is to provide services to the mobile user for \"updating the location of the user as the user moves across a database boundary\" and \"locating the mobile user\". We use a Markov chain to describe the behavior of the mobile user and analyze the best time when forwarding and resetting should be performed in order to optimize the service rate of the PCS network. We demonstrate the applicability of our approach with hexagonal coverage models for the PCS network and provide a physical interpretation of the result.","PeriodicalId":199960,"journal":{"name":"Proceedings Twenty-First Annual International Computer Software and Applications Conference (COMPSAC'97)","volume":"49 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1997-08-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114020287","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: 6
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