基于Kerberos的Internet密钥协商协议的研究

KINK是一个的基于Kerberos的密钥协商协议，它使用Kerberos机制实现密钥协商过程中的身份认证和密钥交换。本文主要描述了KINK中的密钥协商的实现过程，并对它的特点和安全性作了相应的分析。     

A heuristic algorithm for distributed control in manufacturing systems

Distributed Problem Solving Networks (DPSN) provide a means for interconnecting intelligent problem solver nodes that can solve only a part of a problem depending on their ability in the problem domain. The decomposition of a problem into subproblems, and the selection of nodes to solve them can be regarded as the generation of an AND/OR tree, and the solution of the problem as a search for a solution tree. Introducing measurements for the cost of a solution tree, we present an algorithm to find one having minimal cost under certain conditions. A Flexible Manufacturing System consisting of a network of flexible workcells is used as an example.     

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.     

Negotiation support systems: roots, progress and needs

Abstract. This paper identifies game theories and social behavior science as important roots for negotiation support systems (NSS) research. As these are not typically cited in the NSS literature, summary reviews of them are provided with indications of their relevance to NSS study. On the other hand, neither offers a sufficiently general-purpose formal model of negotiation that could serve as a backbone for NSS research. A survey of that research is provided, indicating that prugress to date has been somewhat eclectic and devoid of such a model. Our central contention is that a theoretical foundation for NSS study is much needed. Desirable characteristics of a suitable negotiation model are identified as guidance for future research that will aim to devise (and subsequently apply and test) such a model.     

巴基斯坦高摩赞水利枢纽工程项目危机处理及合同谈判

高摩赞工程项目是水电集团公司在巴基斯坦承建的第一个综合性的水利水电枢纽工程,也是第一个EPC合同形式的项目。本文主要介绍了项目危机处理及合同谈判的过程和措施,通过长达一年的艰苦谈判,化解了项目危机,增进了中巴传统友谊,实现了良好的经济效益和社会效益,为中国水电集团公司国际化战略发展提供了可借鉴的成功案例。     

无线局域网认证中密钥协商方案

针对无线局域网认证和密钥协商的安全性,文章介绍了椭圆曲线密码体制,对基于椭圆曲线密码体制的密钥协商协议进行研究,在EAP-TLS认证机制的基础上,提出一种无线局域网认证中基于ECC的密钥协商方案。     

自动信任协商中一种最小信任披露策略

自动信任协商是通过逐渐请求和披露数字证书在两个陌生实体间建立相互信任的方法。当前对自动信任协商协商策略的研究,往往存在很多问题。文章提出了一种基于期望因子的自动信任协商模型,该模型采用MCD策略,通过分析各信任证书的期望因子,当可能的协商存在时,它能披露和请求最小的信任证找到一条成功的协商路径,当协商不可能成功时,尽快的发现并终止它。它能保证在协商的过程中没有不相关的信任证被披露并且不需要暴露双方的访问控制策略,同时通过实验证了明MCD策略是完备的。     

Measuring and analyzing agents’ uncertainty in argumentation-based negotiation dialogue games

Nowadays, multiagent systems have become a widely used technology in everyday life, and many authors have adopted the view of communication or interaction between agents as a joint activity regulated by means of dialogue games. Dialogue games are a set of communication rules that agents can combine in their complex interactions. In these games, uncertainty is an important problem that each agent faces when making decisions, especially in the absence of enough information. This paper focuses on the uncertainty in a particular type of dialogue games, namely argumentation-based negotiation. There exist several proposals on this type of dialogue games in the literature, and most of them are concerned with proposing protocols to show how agents can communicate with each other, and how arguments and offers can be generated, evaluated and exchanged. Nevertheless, none of them is directly targeting the agents’ uncertainty about the exchanged arguments and how this uncertainty could be measured at each dialogue step to assist those agents make better decisions. The aim of this paper is to tackle this problem by defining a new set of uncertainty measures in negotiation dialogue games from an external agent’s point of view. In particular, we introduce two types of uncertainty: Type I and Type II. Type I is about the uncertainty index of playing the right move. For this, we use Shannon entropy to measure: (i) the uncertainty index of the agent that he is selecting the right move at each dialogue step; and (ii) the uncertainty index of participating agents in the negotiation about the whole dialogue. This is done in two different ways; the first is by taking the average of the uncertainty index of all moves, and the second is by determining all possible dialogues and applying the general formula of Shannon entropy. Type II is about the uncertainty degree of the agent that the move will be accepted by the addressee. In this context, we introduce a new classification for the arguments based on their certainty to be accepted by the addressee.     

中美文化差异对国际商务谈判的影响

经济全球化浪潮下的中关经贸合作达到前所未有的高度,但文化差异却时常成为中关商务谈判的障碍。本文通过文化差异对中关商务谈判的影响做出分析,指出文化在中美商务谈判活动中具有的重要作用并提出相应对策。     

基于协作度的分布式自动协商联盟形成机制

现有联盟形成的研究中大都没有考虑到不同Agent的协作资源和协作态度不同的异质性,而是假定所有Agent具有相同的协作资源和协作态度.为此提出一种基于协作度的分布式自动协商联盟形成机制(collaborative degree-based distributed automatic negotiation coalition formation mechanism,CDBDN),通过对处在网络拓扑结构中Agent的协作资源和协作态度的描述建立Agent协作度的概念.以分布式的应用环境为背景,建立分布式协商协议(distributed negotiation protocal,DNP)来实现分布式自动协商方式构建联盟.该机制建立了分布式协商协议和引入了Agent协作度,提出基于Agent 协作度的协商策略.实验结果表明,该机制在联盟形成的效率、Agent协商效率和个体效用方面都表现出有较好的性能.