2009 5th International Conference on Collaborative Computing: Networking, Applications and Worksharing最新文献_第6页

Comparing visualization techniques to structure collaborative concepts 比较可视化技术结构协作概念

2009 5th International Conference on Collaborative Computing: Networking, Applications and Worksharing Pub Date : 2009-12-28 DOI: 10.4108/ICST.COLLABORATECOM2009.8351

Sherry Koshman, Chi-Jung Lu

{"title":"Comparing visualization techniques to structure collaborative concepts","authors":"Sherry Koshman, Chi-Jung Lu","doi":"10.4108/ICST.COLLABORATECOM2009.8351","DOIUrl":"https://doi.org/10.4108/ICST.COLLABORATECOM2009.8351","url":null,"abstract":"Much research has been devoted to collaborative tools for writing, group communication, reviewing, managing projects, and developing network infrastructures to support sharing activities. However the creation and display of foundational collaborative concepts that manage group work has not been paid significant attention. Information visualization potentially addresses the progression of distributed concept building and presentation by visually representing group-generated concepts. This paper analyzes current visualization-based techniques including tag clouds, node-link diagrams, and mapping structures in a web-based environment. The analysis contributes to exploring the use of visualization tools for creating group concept structures that organize ideas for documents, projects, or specifications in academia and industry. A comparative features table is built and used as a basis for presenting an initial interface design to develop a collaborative visualization tool for concept management. Implications for future work include visualization system interface design, user evaluation, and adaptation to mobile collaborative visualization environments.","PeriodicalId":232795,"journal":{"name":"2009 5th International Conference on Collaborative Computing: Networking, Applications and Worksharing","volume":"31 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-12-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131030183","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

Flexible failure handling for cooperative processes in distributed systems 分布式系统中协作过程的灵活故障处理

2009 5th International Conference on Collaborative Computing: Networking, Applications and Worksharing Pub Date : 2009-12-28 DOI: 10.4108/ICST.COLLABORATECOM2009.8306

Artin Avanes, J. Freytag

{"title":"Flexible failure handling for cooperative processes in distributed systems","authors":"Artin Avanes, J. Freytag","doi":"10.4108/ICST.COLLABORATECOM2009.8306","DOIUrl":"https://doi.org/10.4108/ICST.COLLABORATECOM2009.8306","url":null,"abstract":"Distributed systems will be increasingly built on top of wireless networks, such as sensor networks or hand-held devices with advanced sensing and computational abilities. Supporting cooperative processes executed by such unreliable and dynamic system components poses a various number of new technical challenges. In terms of recovery, limited resource capabilities have be considered during re-scheduling of failed process activities. In terms of concurrency, a non-blocking protocol is required to allow a high degree of parallelism. In this paper, we introduce a flexible and resource-oriented failure handling mechanism for cooperative processes in hierarchical and distributed systems. The objective is to ensure both - transactional semantics as well as the selection of suitable nodes with respect to available resource capabilities. Based on a nested execution model, we develop a multi-stage algorithm that uses constraint solving techniques in a parallel fashion thus achieving a more efficient recovery. We evaluate our proposed techniques in a prototype implementation, and demonstrate significant performance gains by using a parallel re-scheduling.","PeriodicalId":232795,"journal":{"name":"2009 5th International Conference on Collaborative Computing: Networking, Applications and Worksharing","volume":"56 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-12-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128226331","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

VPAF: a flexible framework for establishing and monitoring prolonged authorization relationships VPAF:用于建立和监视长时间授权关系的灵活框架

2009 5th International Conference on Collaborative Computing: Networking, Applications and Worksharing Pub Date : 2009-12-28 DOI: 10.4108/ICST.COLLABORATECOM2009.8366

E. Freudenthal, Bivas Das

{"title":"VPAF: a flexible framework for establishing and monitoring prolonged authorization relationships","authors":"E. Freudenthal, Bivas Das","doi":"10.4108/ICST.COLLABORATECOM2009.8366","DOIUrl":"https://doi.org/10.4108/ICST.COLLABORATECOM2009.8366","url":null,"abstract":"We describe a generic framework for determining and monitoring access rights derived from credential documents. Distributed authorization systems intended to support collaborative coalitions (such as Trust Management systems) typically incorporate mechanisms to both validate credentials, and to determine authorization. This conjunction of distinct functions increases complexity of both components and limits overall flexibility. Furthermore, while authorization decisions frequently enable the commencement of a prolonged relationship, current authorization systems are designed to authorize instantaneous transactions and provide no mechanisms to detect and propagate revocation after an authorization decision is made. VPAF (a Validated and Prolonged Authorization Framework) will separate these duties in a manner that permits credential validation and authorization decisions to be managed separately. VPAF is intended to enable vigilant monitoring of prolonged authorization relationships that span mutually distrustful administrative domains such as is common when multiple organizations collaborate.","PeriodicalId":232795,"journal":{"name":"2009 5th International Conference on Collaborative Computing: Networking, Applications and Worksharing","volume":"50 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-12-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122080915","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

Collaborative process modeling and reuse evaluation 协作过程建模和重用评估

2009 5th International Conference on Collaborative Computing: Networking, Applications and Worksharing Pub Date : 2009-12-28 DOI: 10.4108/ICST.COLLABORATECOM2009.8365

Luiz F. C. Tomaz, J. A. R. Nt., G. Xexéo, J. Souza

引用次数: 6

Learning communities supported by autonomic recommendation mechanism 自主推荐机制支持的学习社区

2009 5th International Conference on Collaborative Computing: Networking, Applications and Worksharing Pub Date : 2009-12-28 DOI: 10.4108/ICST.COLLABORATECOM2009.8348

Stainam Nogueira Brandão, Ricardo Tadeu da Silva, J. M. Souza

引用次数: 0

Integrating external user profiles in collaboration applications 在协作应用程序中集成外部用户配置文件

2009 5th International Conference on Collaborative Computing: Networking, Applications and Worksharing Pub Date : 2009-12-28 DOI: 10.4108/ICST.COLLABORATECOM2009.8329

George Mathew

引用次数: 0

Automatic policy conflict analysis for cross-domain collaborations using semantic temporal logic 基于语义时态逻辑的跨域协作策略冲突自动分析

2009 5th International Conference on Collaborative Computing: Networking, Applications and Worksharing Pub Date : 2009-12-28 DOI: 10.4108/ICST.COLLABORATECOM2009.8392

Zhengping Wu, Yuanyao Liu

引用次数: 7

Economics of network sharing - A case study of mobile telecom sector in Pakistan 网络共享的经济学——巴基斯坦移动电信部门的案例研究

2009 5th International Conference on Collaborative Computing: Networking, Applications and Worksharing Pub Date : 2009-12-28 DOI: 10.4108/ICST.COLLABORATECOM2009.8390

M. A. Choudhary, Hasnat Babar, Hasan Shakeel, A. Abbas

{"title":"Economics of network sharing - A case study of mobile telecom sector in Pakistan","authors":"M. A. Choudhary, Hasnat Babar, Hasan Shakeel, A. Abbas","doi":"10.4108/ICST.COLLABORATECOM2009.8390","DOIUrl":"https://doi.org/10.4108/ICST.COLLABORATECOM2009.8390","url":null,"abstract":"The cellular mobile industry in Pakistan has shown an unprecedented growth since the promulgation of Pakistan Telecommunication (Reorganization) Act of 1996. Over 90 million cellular mobile users and penetration grew to 55.6% and 4.8 million landlines connections provide a teledensity of 58.8% to the nation. The mobile networks provide coverage to over 90 percent of the population. During 2007–08 mobiles traffic exceeded 42 billion minutes while ARPU decreased to US$ 3.11. Total telecom investment during the year 2007–08 was US $ 3.12 billion while the share of telecommunication sector in GDP was 2.0%. Telecom companies invested over US$ 10 billion during the last five years, mobile sector investment share accounted for 66% of the total investment. China Mobile alone invested about US$ 2 billion during 2007–08 for expansion of its CMPak networks. The mobile sector paid over a billion dollars in taxes to the National Exchequer during the year 2007–08. The telecom sector received above US$ 1.438 billion FDI, i.e., 28% of the total FDI and helped create over one million jobs since the deregulation of the telecom sector began. The competitive pressures and decline in ARPU has increased the need for improving technical as well as economic efficiencies. Our analyses indicate there are serious economic efficiencies embedded in infrastructure sharing paradigm for mobile operators. Only the passive sharing of additional sites can yield CAPEX savings of over 5000 million US dollars and OPEX savings of these sites can yield another billion US dollars every year. It is thus concluded that the growing business model of decoupling the revenues from that of mobile traffic warrant serious consideration.","PeriodicalId":232795,"journal":{"name":"2009 5th International Conference on Collaborative Computing: Networking, Applications and Worksharing","volume":"42 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-12-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122516381","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

Protocol overhead versus router processing and memory tradeoffs in evaluating BGP inbound soft reset mechanisms for tactical IP networks 在评估战术IP网络的BGP入站软复位机制时，协议开销与路由器处理和内存权衡

2009 5th International Conference on Collaborative Computing: Networking, Applications and Worksharing Pub Date : 2009-12-28 DOI: 10.4108/ICST.COLLABORATECOM2009.8373

Isil Sebüktekin, J. Haluska, Pete Moyer, K. Adams

{"title":"Protocol overhead versus router processing and memory tradeoffs in evaluating BGP inbound soft reset mechanisms for tactical IP networks","authors":"Isil Sebüktekin, J. Haluska, Pete Moyer, K. Adams","doi":"10.4108/ICST.COLLABORATECOM2009.8373","DOIUrl":"https://doi.org/10.4108/ICST.COLLABORATECOM2009.8373","url":null,"abstract":"Border Gateway Protocol (BGP) is the inter-domain routing protocol of choice across the Global Information Grid (GIG) as in the commercial Internet. There is a future need and motivation to extend BGP to connect the large-scale future military networks of the Army, Navy and Air Force to the GIG as independent Autonomous Systems (ASes) using satellite and wide area networking (WAN) technologies. These networks are expected to be highly mobile and multi-homed to the GIG. Higher BGP protocol activity and policy use, both in the inter-and intra-domain, is anticipated for such mobile ASes compared to the largely static commercial counterparts. Wireless bandwidth being a scarcer and more volatile network resource, emphasizes the need to manage protocol overheads among routers in dynamic mobile network environments. This is in contrast to the primary concern of optimizing router packet processing and memory utilization in significantly higher speed provider networks of the Internet. In consideration of the different dynamics expected, we analyze BGP “soft resets” as one small but high-impact operational property of BGP for the tactical Internet, specifically the “inbound soft resets” and the different methods for implementing them. We support our comparative analysis with empirical results, 1 also evaluating impacts on BGP Route Reflectors with multiple peers.","PeriodicalId":232795,"journal":{"name":"2009 5th International Conference on Collaborative Computing: Networking, Applications and Worksharing","volume":"10 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-12-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115649927","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

VaaS: Videoconference as a service VaaS:视频会议即服务

2009 5th International Conference on Collaborative Computing: Networking, Applications and Worksharing Pub Date : 2009-12-28 DOI: 10.4108/ICST.COLLABORATECOM2009.8285

P. Rodríguez, Daniel Gallego, Javier Cerviño, Fernando Escribano, J. Quemada, J. Salvachúa

引用次数: 29