Using Automated Negotiation for Grid Services

The popularity of grid services has widened their application to numerous domains and increased the utilization of computational resources. In order to create more incentives for the resources owners to lease their resources and prevent users from wasting the resources, the introduction of a market-oriented grid is inevitable. However, the issues for the negotiation between service provider and consumer over the supply and demand of resources can be complex, with highly interdependent issues. In this research, a simulated automated negotiation mechanism including a co-evolutionary mechanism and a modified game theory approach is proposed, to assist them in reaching an agreement over the conflicting issues. In the proposed architecture, the co-evolution process is able to reduce the multiple dimensional search space into a two-dimension search space and identify the appropriate negotiation strategies for the negotiating agents to form a payoff matrix which can be used for the game theory related stage of their interaction. The multiple stage negotiation process is introduced to improve the negotiation result. In this paper, an application which requires a large amount of computational resources to process the data generated from mobile devises is used to demonstrate that the proposed system is able to resolve the conflicts and obtain a valid solution.     

日本关西宽带实验网印象

本文根据实地考察内容，结合宽带网络技术和业务重点及实施策略，全面介绍了日本关西宽带实验网发展背景，通信与广播电视综合应用实验和Ｂ－ＩＳＤＮ实用化实验的进展以及ＮＴＴ所起作用。文章最后就关西宽带实验网的借鉴意义提出了几方面意见。     

TiO_2-聚乙烯复合膜的制备及红外光谱对其膜层结构的表征

开发了以Ｔｉ４＋为桥联剂制备无机－有机复合膜的新方法以自制的硅藻土多孔陶瓷为基膜（支撑体），使用浸涂法－热致相转化法相结合制备了ＴｉＯ２－聚乙烯复合膜，并用红外光谱表征了复合膜层与层之间的结合方式和强度，支撑体中的ＳｉＯ２通过Ｔｉ４＋与聚乙烯的分子之间形成了新的化合物型膜层     

卷边槽钢压杆考虑板组约束作用的屈曲系数

卷边槽钢压杆的局部屈曲具有相关性。《冷弯薄壁型钢结构技术规范》(GB50018-2002)提出适用于各种不同截面的板组约束系数的统一计算公式来考虑这种相关性。但由于板组组成的多样性,其是否合理,有待于进一步研究。借助ANSYS有限元分析软件,对卷边槽钢压杆局部屈曲进行分析,得到考虑板组约束作用的屈曲系数,并和国内外规范进行比较。结果表明,计算结果和英国规范吻合较好,我国规范偏于安全较多。借鉴英国规范的形式,给出考虑板组约束作用的屈曲系数的计算公式,这些公式可供进一步修订规范时参考。     

IPTV助推数字家庭时代的到来

不同行业都在关注数字家庭的发展，但数字家庭发展缓慢的现状不容忽视。现阶段来看通信和媒体娱乐业务是数字家庭市场需求的重点，基于电信网络的数字家庭通过借助IPTV的音视频和增值应用业务可以顺应此要求。IPTV业务包括基本的音视频广播、点播、时移业务，以及信息服务、音视频通信、互动游戏、即时通讯、卡拉OK、远程教育等增值应用服务，非常适合数字家庭的发展需要，将使数字家庭的应用变得更为现实。未来，进一步推动数字家庭发展需要在易用性和业务创新两个方面取得突破，需要通过设备间的协同工作，为用户提供基于数据、语音、视频的三重业务新体验。     

Putting Web Services in Context

When considering the full range of Web service-related activities, it becomes clear that dealing with context is a major challenge, requiring greater expressiveness, reasoning capabilities, and architectural components than are provided by the current widely accepted building blocks of the Web services stack. This paper presents an informal overview of concepts, requirements and challenges for handling contextual knowledge in connection with Web services, and briefly discusses several interesting projects in this area of research.     

"The dismantling of our health system: Strategies for the survival of psychological practice": A reply to Cummings.

Comments on the original article, The dismantling of our health system: Strategies for the survival of psychological practice by Nicholas A. Cummings (see record 1986-22651-001). In response to this article, the current author says "no, no, no!" He believes that "survival with this degree of compromise amounts to doing anything for a buck." (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

The Tenet experience and the design of protocols for integrated-services internetworks

The research done by the Tenet Group in multimedia networking has reached a point where it may be useful to reflect on the significance of its results for the current debate on how integrated-services internetworks should be designed. Such reflections constitute the main subject of this paper. The principles of the work and the conclusions reached so far by the Tenet researchers are discussed in the light of the conflict between the two major technologies being proposed to build future information infrastructures: namely, the Internet and the ATM technologies. The Tenet approach suggests one feasible way for resolving the conflict to the advantage of all the users of those infrastructures. This paper discusses various fundamental aspects of integrated-services network design: the choice of the service model, the type of charging policy to be adopted, and the selection of a suitable architecture.     

对日IT软件产业结构优化的研究

软件服务外包作为一个新型的软件产业方兴未艾,这种贸易方式加强了国际间的合作与区域性产业的互补。作为中国的近邻日本,这种互补方式的优势显得尤为突出。但是,由于中国外包企业的竞争力较弱、技术力量不够雄厚、企业规模尚未形成等弱点存在,大大制约着中国软件服务外包业的进一步发展。特别是随着诸多新兴接包国家和地区的崛起,使得中国所面临的竞争进一步加大,从前的低成本优势将得到削弱。这些都严重地制约着中国软件服务外包行业的健康发展。有序地调整以低端为主的产业结构,提高自主创新能力,加大服务外包在国家IT（Information Technology）产业中的比重,从而增强核心竞争力。