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Proceedings IEEE 9th International Workshops on Enabling Technologies: Infrastructure for Collaborative Enterprises (WET ICE 2000)最新文献

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Techniques for evaluating collaboration toolkits 评估协作工具包的技术
P. Dewan
The most reliable approach to evaluating a collaboration toolkit is to carry out field studies. This approach has the problem that it requires each project to be interdisciplinary and create a complete, working system, which seems too costly given the budget for a typical research project and the complexity of a collaboration toolkit; and more important, does not allow a project to converge incrementally towards a complete solution. Based on the lessons learned from our work and that of others on collaboration toolkits, we have identified several lower-cost techniques for evaluating collaboration toolkits including inspecting the design to see if requirements have been met, simulating other systems, implementing complete solutions to standard problems, and performing self and lab studies. This paper discusses these techniques, points out their pros and cons, identifies the influential projects in which they have been used, and shows how they fit together.
评估协作工具包最可靠的方法是进行实地研究。这种方法的问题是,它要求每个项目都是跨学科的,并创建一个完整的、可工作的系统,考虑到典型研究项目的预算和协作工具包的复杂性,这似乎过于昂贵;更重要的是,它不允许一个项目逐渐向一个完整的解决方案靠拢。基于从我们的工作和其他协作工具包的工作中学到的经验教训,我们已经确定了几种低成本的技术,用于评估协作工具包,包括检查设计以查看是否满足需求、模拟其他系统、实现标准问题的完整解决方案,以及执行自我和实验室研究。本文讨论了这些技术,指出了它们的优点和缺点,确定了使用它们的有影响力的项目,并展示了它们是如何结合在一起的。
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引用次数: 2
A Web infrastructure for people and agent interaction and collaboration 用于人员和代理交互和协作的Web基础设施
Giacomo Cabri, L. Leonardi, F. Zambonelli
Internet pervasive services call for flexible supports to enable a wide degree of collaboration. On the one hand, many people are connected to the Internet and surf the Web not only to retrieve information, but also to carry out several kinds of different tasks via online services. On the other hand, the Internet is likely soon to be populated by software agents that will act on behalf of users, and that are "intelligent" enough to achieve better results without boring their users. In this paper, we present a Web-based modular architecture that permits interaction and collaboration among people and agents, leading to a more fruitful exploitation of the capabilities offered by the Internet. A negotiation application based on auctions is used to show the advantages of the proposed architecture.
互联网普及服务需要灵活的支持,以实现广泛的协作。一方面,许多人连接到互联网,上网冲浪不仅是为了检索信息,而且还通过在线服务来执行几种不同的任务。另一方面,互联网很可能很快就会被代表用户行事的软件代理所填充,这些软件代理足够“智能”,可以在不让用户感到无聊的情况下获得更好的结果。在本文中,我们提出了一个基于web的模块化体系结构,它允许人员和代理之间的交互和协作,从而更有效地利用Internet提供的功能。基于拍卖的协商应用程序显示了所提出体系结构的优点。
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引用次数: 3
CollabLogger: a tool for visualizing groups at work CollabLogger:一个可视化工作小组的工具
E. Morse, M. Steves
The CollabLogger is a visual tool that has been developed to support usability analyses of human-computer interaction in a team environment. The participants in the computer-mediated activity were engaged in a small-scale manufacturing testbed project. Interactions of the group were mediated by Teamwave Workplace and the members performed both synchronous and asynchronous activities depending on their availability, project requirements, and due to chance meetings in the collaborative space. The software was instrumented to log users' interactions with the system and each other. The CollabLogger addresses the problem of helping investigators analyze the volumes of log data that groupware tools can generate. Visual tools are powerful when large amounts of diverse data present themselves. The place-based collaboration environment offered by Teamwave Workplace provided a level of organization that allowed us to create a visual interface with which to perform exploratory sequential data analysis.
CollabLogger是一个可视化工具,用于支持团队环境中人机交互的可用性分析。计算机中介活动的参与者参与了一个小规模的制造试验台项目。团队的相互作用由Teamwave Workplace调解,成员根据他们的可用性、项目需求和协作空间中的偶然会议执行同步和异步活动。该软件用于记录用户与系统以及彼此之间的交互。CollabLogger解决了帮助调查人员分析群件工具可以生成的日志数据量的问题。当大量不同的数据出现时,可视化工具非常强大。Teamwave Workplace提供的基于位置的协作环境提供了一个层次的组织,允许我们创建一个可视化的界面,用它来执行探索性的顺序数据分析。
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引用次数: 20
On the implementation of a stand-alone Java/sup TM/ bytecode verifier 关于实现一个独立的Java/sup TM/字节码验证器
F. Painchaud, M. Debbabi
A member of our research team has already produced a well-organized clear, technical and complete specification of the Java bytecode verifier. We are now using this specification to implement a stand-alone version of the verifier that totally complies with Sun's specification. We are also integrating static checks that are currently absent from their implementation. In this paper we share our experience on that development work. As an introduction, we depict the main goals of the Verifier, followed by an overview of its verification process. We then present the major steps that we followed to develop our Verifier, in order to explain the problems that we have encountered and to summarize their solutions. Finally, we show a screenshot of our Verifier's interface and enlighten its most interesting features.
我们研究小组的一名成员已经制作了一个组织良好的、清晰的、技术性的和完整的Java字节码验证器规范。我们现在使用这个规范来实现一个完全符合Sun规范的独立版本的验证器。我们还集成了目前在其实现中缺少的静态检查。在本文中,我们分享了我们在开发工作中的经验。作为介绍,我们描述了验证器的主要目标,然后概述了它的验证过程。然后,我们介绍了开发验证器所遵循的主要步骤,以便解释我们遇到的问题并总结它们的解决方案。最后,我们展示了验证器界面的截图,并说明了它最有趣的特性。
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引用次数: 0
A delayed commitment scheme to enhance public key certificate based protocols 一种延迟承诺方案,用于增强基于公钥证书的协议
Wu Wen
Public key certificate based protocols depend on the freshness of the certificates for their security. It has been pointed out by various authors that current Public Key Infrastructure (PKI) does not provide effective freshness proof for certificates. An "ex-employee" who has access to the private key of a compromised server certificate can mount an attack on the SSL/TLS hand-shake protocol and eavesdrop the subsequent secret communication even if the server uses a fresh certificate. In this paper we propose an improved handshake protocol which requires minimum change to the current SSL/TLS handshake protocol, yet practically prevent the above "ex-employee" attack.
基于公钥证书的协议依赖于证书的新鲜度来保证其安全性。许多作者都指出,目前的公钥基础设施(PKI)并没有为证书提供有效的新鲜度证明。即使服务器使用新的证书,拥有受损服务器证书私钥的“前雇员”也可以对SSL/TLS握手协议发起攻击并窃听后续的秘密通信。在本文中,我们提出了一种改进的握手协议,该协议需要对当前SSL/TLS握手协议进行最小的更改,但实际上可以防止上述“前雇员”攻击。
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引用次数: 0
Towards secure e-services 迈向稳妥的电子服务
Claudiu Duma, Almut Herzog, N. Shahmehri
The networked home with refrigerators and washing machines connected to the Internet and reachable through Web browsers will be reality soon. Following this development, the market for electronically deliverable services will evolve. Companies that want to provide electronic services cannot be expected to deal with cable, network and routing problems-they need to rely and build on a common, secure hard- and software infrastructure that allows services to reach the customers' homes. We call such an infrastructure an e-services system (e-SS). In this paper we present the infrastructure of an example e-SS, highlight a number of specific security issues and show how they can be addressed in the early stages of the design of an e-SS.
冰箱和洗衣机连接到互联网,并通过网络浏览器访问的联网家庭将很快成为现实。随着这一发展,电子交付服务的市场将不断发展。想要提供电子服务的公司不能指望处理电缆、网络和路由问题——他们需要依赖并建立一个通用的、安全的硬件和软件基础设施,使服务能够到达客户的家中。我们把这样的基础设施称为电子服务系统(e-SS)。在本文中,我们介绍了一个示例e-SS的基础结构,重点介绍了一些特定的安全问题,并展示了如何在e-SS设计的早期阶段解决这些问题。
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引用次数: 1
Server-assisted generation of a strong secret from a password 服务器辅助从密码生成强秘密
W. Ford, B. Kaliski
A roaming user, who accesses a network front different client terminals, can be supported by a credentials server that authenticates the user by password then assists in launching a secure environment for the user. However, traditional credentials server designs are vulnerable to exhaustive password guessing attack at the server. We describe a credentials server model and supporting protocol that overcomes that deficiency. The protocol provides for securely generating a strong secret from a weak secret (password), based on communications exchanges with two or more independent servers. The result can be leveraged in various ways, for example, the strong secret can be used to decrypt an encrypted private key or it can be used in strongly authenticating to an application server. The protocol has the properties that a would-be attacker cannot feasibly complete the strong secret and has only a limited opportunity to guess the password, even if he or she has access to all messages and has control over some, but not all, of the servers.
漫游用户通过不同的客户端终端访问网络,可以由凭据服务器支持,凭据服务器通过密码对用户进行身份验证,然后帮助为用户启动安全环境。然而,传统的凭据服务器设计容易受到服务器上的详尽密码猜测攻击。我们描述了一个凭据服务器模型和支持协议来克服这个缺陷。该协议基于与两个或多个独立服务器的通信交换,提供了从弱秘密(密码)安全地生成强秘密的方法。结果可以通过各种方式加以利用,例如,强秘密可以用于解密加密的私钥,也可以用于对应用程序服务器进行强身份验证。该协议具有这样的属性,即潜在的攻击者无法完成强秘密,并且只有有限的机会猜测密码,即使他或她可以访问所有消息并控制一些(但不是全部)服务器。
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引用次数: 207
Report on major themes and issues arising from the workshop 报告研讨会的主要主题和议题
K. Bellman, C. Landauer, R. Tolksdorf, A. Ferscha
The WETICE Workshop on Web-based Infrastructures and Coordination Architectures for Collaborative Enterprises continued two threads of workshops in the WET-ICE series that were held over the last four years. These workshops addressed the question of how Web techniques can be used 10 achieve or 10 improve collaboration within or between organizations, and which coordination mechanisms could be used in such an architecture. The papers presented at the workshop and included in the proceedings contributed 10 all areas mentioned. They triggered several discussions on the addressed topics. This report presents the views expressed and conclusions drawn.
关于基于web的基础设施和协作企业协调架构的WETICE研讨会延续了过去四年中举办的WET-ICE系列研讨会的两个主题。这些研讨会讨论了如何使用Web技术来实现或改进组织内部或组织之间的协作,以及在这样的体系结构中可以使用哪些协调机制。在讲习班上提出并列入会议记录的论文对上述所有领域都作出了贡献。他们就所讨论的主题引发了几次讨论。本报告提出了所表达的意见和得出的结论。
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引用次数: 0
Evaluation challenges for a Federation of heterogeneous information providers: the case of NASA's Earth Science Information Partnerships 异构信息提供者联盟的评估挑战:以NASA地球科学信息伙伴关系为例
C. Plaisant, A. Komlódi, F. Lindsay
NASA's Earth Science Information Partnership Federation is an experiment funded to assess the ability of a group of widely heterogeneous earth science data or service providers to self organize and provide improved and affordable access to an expanding earth science user community. As it is self-organizing, the Federation is mandated to set in place an evaluation methodology and collect metrics reflecting the outcomes and benefits of the Federation. This paper describes the challenges of organizing such a federated partnership self-evaluation and discusses the issues encountered during the metrics definition phase of the early data collection. Our experience indicates that a large number of metrics will be needed to fully represent the activities and strengths of all partners, but because of the heterogeneity of the ESIPs the qualitative data (comments accompanying the metric data and success stories) becomes the most useful information. Other lessons learned included the absolute need for online browsing tools to accompany data collection tools. Finally, our experience confirms the effect of evaluation as an agent of change, the best example being the high level of collaboration among the ESIPs which can be in part attributed to the initial identification of collaboration as one of the important evaluation factors of the Federation.
NASA的地球科学信息合作联盟是一项实验,旨在评估一组广泛异构的地球科学数据或服务提供商的自组织能力,并为不断扩大的地球科学用户社区提供改进的和负担得起的访问。由于联合会是自组织的,它的任务是制定一种评估方法,并收集反映联合会成果和效益的指标。本文描述了组织这样一个联邦伙伴关系自我评估的挑战,并讨论了在早期数据收集的度量定义阶段遇到的问题。我们的经验表明,将需要大量的指标来充分代表所有合作伙伴的活动和优势,但由于esip的异质性,定性数据(伴随指标数据和成功案例的评论)成为最有用的信息。其他经验教训包括绝对需要在线浏览工具来配合数据收集工具。最后,我们的经验证实了评价作为变革推动者的作用,最好的例子是esip之间的高水平合作,这在一定程度上可归因于最初确定合作是联合会的重要评价因素之一。
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引用次数: 7
Workshop report: knowledge media networking 工作坊报告:知识媒体网络
F. Daoud
Historically, systems for linking and supporting robust social connections between people, whether they are in close proximity or distributed over longer distances, have included point to point solutions (letters, the automobile, telephone), task-focused or work-modeling solutions (memos, forms, manuals), and one-to-many broadcast solutions (radio, TV, newspapers). More recently, computationally based systems have been designed to support various aspects of collaboration, coordination and community: email, newsgroups, bulletin boards, and shared task tools and other examples. New media technologies are emerging to design interactive virtual environments in which humans can interact with one another. People as well as virtual entities would ?inhabit? such local/networked spaces within a mixed reality. In order to make these environments really useful, rich, interesting and engaging places, users should not be imposed a heavy load of manipulating, interpreting, and integrating information. Knowledge media channels would allow coupling media with appropriate processing and integration of knowledge from different sources, domains, media and to support activities and arrangements for teams, organizations, communities, working together over distance and time.
从历史上看,连接和支持人们之间强大的社会联系的系统,无论他们是在很近的距离上还是分布在较长的距离上,都包括点对点解决方案(信件、汽车、电话),以任务为中心或工作建模解决方案(备忘录、表格、手册),以及一对多广播解决方案(广播、电视、报纸)。最近,基于计算的系统被设计为支持协作、协调和社区的各个方面:电子邮件、新闻组、公告板、共享任务工具和其他示例。新媒体技术的出现设计了交互式虚拟环境,人们可以在其中相互交流。人和虚拟实体都将居住在其中。这样一个混合现实中的本地/网络空间。为了使这些环境真正有用、丰富、有趣和吸引人,用户不应该被强加于操作、解释和集成信息的繁重负担。知识媒体渠道将使媒体与来自不同来源、领域、媒体的知识的适当处理和整合相结合,并支持团队、组织、社区的活动和安排,跨越距离和时间一起工作。
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引用次数: 0
期刊
Proceedings IEEE 9th International Workshops on Enabling Technologies: Infrastructure for Collaborative Enterprises (WET ICE 2000)
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