A Study of Building Internet Marketplaces on the Basis of Mobile Agents for Parallel Processing

In this paper, we propose a framework of Internet marketplaces on the basis of mobile agents. It not only simulates real commercial activities by consumers, agents and merchants, but also provides an environment for parallel processing. The latter is particularly important as more shops (sites) can be searched in real time to provide consumers with better choices. Meanwhile, if the number of mobile agents is very large and the dispatch is processed in a serial way, it can become a bottleneck that impacts the efficiency as a whole. In this paper, we also present and discuss several hierarchical dispatch models where the dispatch of multiple mobile agents can be processed in parallel over different hosts. We study these models analytically and empirically. The conducted experiments show that, in comparison with several serial mobile agent models, parallel mobile agent models can improve the performance significantly. In addition, in the best case for the parallel dispatch model, the time complexity for dispatching n mobile agents is O(log₂ n).     

基于多智能体的虚拟企业环境下自治agent的协商

讨论了基于多智能体(Multi-agent)的虚拟企业环境下自治agent的协商,针对虚拟企业环境下协商的特点,提出了虚拟企业环境下自治agent的协商通用形式化模型,并在模型的基础上给出了一系列协商策略与协商战略.使用这些策略与战略不仅可以帮助agent生成建议与反建议,而且可以帮助agent对收到的建议做出评价,以作为生成反建议或终止协商的依据.     

多智能体系统中的协商模型

目前,对多智能体系统的应用多是以开放的、复杂的、变化的网络为平台,为了更好地与环境相匹配,同对提高智能体之间协商的效率,从全局与单个智能体两方面着手,提出了一种新的MAS全局模型,并相应地提出了全局协调Agent的三维模型以及智能体之间的协商模型。通过这一系列模型的模拟实现,证明了此协商模型是正确的与接近自然的。从理论上基本上解决了与当前流行的基于网络的各种先进的智能系统,分布式问题求解等领域的衔接,因而有一定的指导意义并具有广阔的发展前景。     

CSCW协同建组自动协商模型研究

文章提出了支持协同工作组建立的自动协商模型,定义了agent协商协议、协商算法和协商agent用于产生及评估offer、counter-offer的效益决策函数,分析了算法时间耗用,与现有协商模型和协商建组FITS/CL框架进行对比,验证了该模型在支持用户参加多个协同组、进行多协商方面的优势,解决了组建立中的群体决策问题,对探索自动建组方式进行有益尝试。     

Modeling Agent Negotiation Via Fuzzy Constraints in E-Business

In e-business, disputes between two or more parties arise for various reasons and involve different issues. Thus, resolution of these disputes frequently relies on some form of negotiation. This article presents a general problem-solving framework for modeling multi-issue multilateral agent negotiation using fuzzy constraints in e-business. Fuzzy constraints are thus used not only to define each agent's demands involving human concepts, but also to represent the relationships among agents. A concession strategy, based on fuzzy constraint-based problem-solving, is proposed to relax demands, and a trade-off strategy is presented to evaluate existing alternatives. This approach provides a systematic method for reaching an agreement that benefits all agents with a high satisfaction degree of constraints. Meanwhile, by applying the method, agents can move toward an agreement more quickly, because their search focuses only on the feasible solution space. An example application to negotiate an insurance policy among agents is provided to demonstrate the usefulness and effectiveness of the proposed framework.     

Negotiation Agents that Make Prudent Compromises and are Slightly Flexible in Reaching Consensus

The contribution of this work is designing and developing enhanced market-driven agents with the flexibility to (1) respond to changing market conditions, and (2) raise and relax trade aspirations. Previous theoretical analyses have shown that market-driven agents ( MDA s) make prudent compromises by reacting to changing market situations by taking into account factors such as competition, deadlines, and trading options. This work augments the design of an MDA with three fuzzy decision controllers that guide the agent in (i) relaxing trade aspiration in face of intense negotiation pressure, and (ii) raising trade aspiration in extremely favorable markets. Results from extensive simulations conducted using an implemented testbed suggest that when compared to MDA s, agents in this work achieved (1) higher success rates in reaching deals, (2) higher average utilities, and (3) higher expected utility.     

A Secure Agent-based Framework for Internet Trading in Mobile Computing Environments

Most of the current Internet trading frameworks, in particular their negotiation and payment phases, are intended for customers frequently connected to the Internet during an entire transaction. This requirement cannot be easily met in the high communication cost and/or low bandwidth settings, typically found in mobile computing environments. Based on the software agent paradigm, a new secure agent-based framework for Internet trading in mobile computing environments is proposed in this paper. The framework is composed of two new protocols. One is the agent-based auction-like negotiation protocol, another is the agent-based payment protocol. Both of them are dedicated to solve the trade problems of Internet trading in mobile computing environments and ensured to be safe by cryptographic technologies. The combination of the two secure protocols constitutes an integrative solution for Internet trading in mobile computing environments.     

煤矿物联网应用水平评估

依据物联网标准体系,构建了煤矿物联网应用水平的评价指标体系,利用模糊综合评价方法给出了煤矿物联网应用水准指标体系评价模型;以某煤矿物联网建设情况为例,对评价模型进行了验证分析。分析结果表明,该评价模型能客观地反映出煤矿物联网建设的现实情况和不足之处,可为煤炭企业制定物联网发展战略提供参考。     

移动Agent技术在远程考试系统中的应用

对网络远程考试系统进行分析研究,首先讨论了客户／服务器模式的设计解决方案,然后在此基础上研究讨论了基于移动Agent模型的系统设计方案,最后详细讨论了用移动Agent技术设计该系统的优点和工作流程。     

Towards evolvable Internet architecture-design constraints and models analysis

There is a general consensus about the success of Internet architecture in academia and industry. However, with the development of diversified application, the existing Internet architecture is facing more and more challenges in scalability, security, mobility and performance. A novel evolvable Internet architecture framework is proposed in this paper to meet the continuous changing application requirements. The basic idea of evolvability is relaxing the constraints that limit the development of the architecture while adhering to the core design principles of the Internet. Three important design constraints used to ensure the construction of the evolvable architecture, including the evolvability constraint, the economic adaptability constraint and the manageability constraint, are comprehensively described. We consider that the evolvable architecture can be developed from the network layer under these design constraints. What＇s more, we believe that the address system is the foundation of the Internet. Therefore, we propose a general address platform which provides a more open and efficient network environment for the research and development of the evolvable architecture.     

移动互联网在电力系统的立用及基于等级保护的安全防护研究

移动互联网正成为信息通信技术的发展趋势,随着电力信息化建设的深入,移动互联技术将得到更广泛应用。文章首先介绍了移动互联网在电力系统中的应用模式,然后讨论了其主要信息安全风险,最后阐述了电力系统移动互联网基于等级保护的移动终端、网络通道和业务应用等方面的安全防护措施。     

移动互联网视频业务盗链分析及对策研究

移动互联网市场上频繁出现视频业务的盗链现象,业务的使用安全极为严峻。本文详细阐述了移动互联网视频业务的盗链情况,深入研究了盗链的规律和技术原理。通过技术分析研究,针对门户访问盗链提出了建立渠道访问白名单的技术方案;针对视频业务使用盗链提出了防篡改、防传播和防破解的技术解决方法。实践证明,相应的技术解决方案有效控制了视频盗链的情况。     

基于Agent的自主构件模型设计与评估

为适应复杂环境和业务需求的变化,自适应软件开发要求为系统及其构成成分提供新的抽象和建模手段。自主构件能够感知并依据环境的变化自动地做出决策。采用自主构件开发复杂软件系统的主要目的是有效降低软件开发和维护的复杂性。在分析自适应软件实体功能和特征的基础上,提出一种基于智能体(Agent)的自主构件模型,该自主构件模型能动态感知环境的变化,合理封装自适应逻辑,依据策略规则进行决策,并根据目标导向,自动规划执行行为的序列。评估结果表明,该模型为建模与开发复杂自适应化软件提供了有效的底层支持。     

关于我国手机动漫现状的分析与发展之路的探究

当今随着移动网络和手机软件技术的不断革新,手机已逐渐成为继电视和互联网之后又一动漫作品的重要播放媒介。文章对我国手机动漫的发展现状、研发情况、市场前景及适用群体等方面进行系统研究,着重分析了国内外产业现状及未来发展的趋势。并对如何完善我国手机动漫产业。打造本土品牌提供了有益的参考与借鉴。     

测控系统软件质量模型及评价

改善和提高软件质量是开发者研究的重要课题,对质量进行定量评价是工程领域的热点问题。在分析常见质量模型的基础上,结合测控软件的特点,从实用的角度出发,建立了相应的质量评价模型。针对评价环节具有很强模糊性的特点,提出了模糊综合评价的一般方法,并结合实例验证了该方法在技术上可行,且具有较强的可操作性。     

武器系统虚拟试验验证技术发展研究

虚拟试验验证是贯穿军工产品全生命周期的核心技术之一;它通过将系统工程方法、虚拟现实技术和计算机仿真技术有机地结合起来,构建数字化的试验和测试环境,评价军工产品关键系统的功能和性能等是否满足设计要求,验证系统之间互操作的协调性和匹配性;该报告以复杂军工产品试验验证过程为背景,对虚拟试验验证技术的概念和内涵进行了阐述,对虚拟试验验证应用系统的构成和关键技术进行了分析,在此基础上介绍了虚拟试验验证的典型应用和发展前景。     

多目标多级模糊综合评判在教学评估上的应用

教师教学评估是高等院校教学质量管理的重要环节,对提高课堂教学质量具有积极意义和重要作用。教师教学评估是一个多目标、多层次的模糊综合评判问题,在模糊综合评判中将有关的模糊概念用模糊集合表示,通过模糊运算获得用模糊集合表示的评价结果。针对教学评估体系输入和输出之间的复杂关系,在介绍了模糊变换的基础上,提出了适用于教师教学评估的多目标多级模糊综合评判模型,且用实例进行了说明。     

软件第三方测评

软件测评是许多软件交付用户前的最后一个环节,对提高软件的质量起着重要作用.所谓的软件第三方测评,是由具有相关资质的独立第三方测评机构根据委托方的要求,依据相关标准,对被测软件的质量进行全面的测试和评价.结合自身工作经验介绍了软件第三方测评的目的,详细论述了软件第三方测评的过程及其工作产品,最后对如何更好地开展软件第三方测评提出了一些建议.     

集群式供应链中基于约束层次和模糊偏好的供应商评价选择模型

针对集群式供应链中采购商选择供应商过程中出现的过约束问题,提出一种基于约束层次和模糊偏好的供应商评价选择模型.该模型基于约束层次理论,依据采购商对供应商约束的必需性程度,将约束分为强制性约束层和非强制性约束层;同时采用模糊偏好的量化方法来确定采购商对供应商的模糊偏好,简化了供应商的选择过程;另外,该模型改进了约束层次理论中的全局评价算子,基于线性加权法构造了基于强制性约束层评价模型和非强制性约束层评价模型的供应商综合评价模型,提高了供应商选择的成功率.最后通过算例验证该模型是有效的.     

武器装备维修服务质量的灰色模糊综合评判

文章介绍了服务质量评价的理论并综述了维修服务质量评价研究,结合武器装备维修行业的具体情况,构建了多指标、多层次的武器装备维修服务质量指标体系,以企业A和企业B为案例,运用灰色模糊综合评判法对其服务质量指标体系进行了评估,评估结果表明该指标体系适用广,增强了评价结果的准确性和客观性.