基于智能多代理的工作流资源分配

提出了一种基于智能多代理实现分布式工作流资源分配的方法。该方法采用KQML语言来设计资源分配代理和工作流引擎之间面向知识交换的通信协议,并且由Router提供消息存储和转发机制。工作流资源分配代理与工作流管理系统的其他代理程序通过KQML消息交流知识,从而达到在分布式、异构环境下的互操作。     

X窗口系统中应用程序构造技术探讨

介绍了X窗口系统环境下应用程序界面的自动生成技术,其中包括Motif编程模型及有关概念;应用程序构造器生成应用程序界面的过程;应用程序构造器的机理及构造器创建应用程序的完善。     

FireFly: a cross-layer platform for real-time embedded wireless networks

We propose a cross-layer approach with tightly-coupled time synchronization for real-time support and predictable lifetime in battery-operated sensor networks. Our design spans a sensor hardware platform with hardware-based global time synchronization, a TDMA link layer protocol with collision-free multi-hop support and node scheduling algorithms for maximum concurrency and streaming. Our dual-radio sensor platform, FireFly, features an IEEE 802.15.4 transceiver and supports global time synchronization indoors by using an AM radio carrier-current method and an atomic clock receiver for outdoors. A TDMA-based link protocol, RT-Link, leverages the hardware for fixed and mobile nodes with a near-optimal and predictable node lifetime of over 2 years. It outperforms comparable sensor network link protocols such as B-MAC and S-MAC in terms of end-to-end latency and throughput and node lifetime across all duty cycle ratios. Operating over RT-Link is MAX, a scheduling framework which offers optimal transmission concurrency and bandwidth management for networks with regular structure. Through analysis and experiments we show that global time sync is a robust, economical and scalable alternative to in-band software-based techniques. To illustrate the capabilities and flexibility of our platform, we describe our experiences with two-way voice streaming over multiple hops. We have deployed a 42-node network with sub-100 μs synchronization accuracy in the NIOSH experimental coal mine for people-tracking and voice communication.

A resource broker with an efficient network information model on grid environments

This paper describes a resource broker whose main function is to match available resources to user needs. The resource broker provides a uniform interface for accessing available and appropriate resources via user credentials. We also focus on providing approximate measurement models for network-related information using NWS for future scheduling and benchmarking. We first propose a network measurement model for gathering network-related information (including bandwidth, latency, forecasting, error rates, etc.) without generating excessive system overhead. Second, we constructed a grid platform using Globus Toolkit that integrates the resources of five schools in Taichung integrated grid environment resources (TIGER). The resource broker runs on top of TIGER. Therefore, it provides security and current information about available resources and serves as a link to the diverse systems available in the Grid.

支持产业集群的资源共享环境结构与技术研究*

在分析产业集群资源信息共享需求的基础上,论述了支持产业集群开放资源服务的资源共享环境的概念和内容;提出一种由客户端、代理存储、安全维护、应用服务和公共数据中心组成的支持产业集群资源共享服务的五层体系结构;分析论述了同一产业集群内各成员企业资源信息通过Internet实现共享与交换的方法和关键技术,为建成可实施的服务与产业集群网络化制造的资源服务共享环境打下基础。     

基于URL的Java语言网络通讯机制和程序设计

介绍了Java语言的URL网络通讯机制。基于URL类理论和方法,建立了一条和所选资源联接的通讯线路,并利用该网络线路进行读写资源信息流等操作。     

企业门户Web资源整合及其实现的研究*

讨论了企业门户Web资源整合中的关键问题,分析并给出了相关整合技术方案。提出了一种特殊的远程门户组件Web服务（WSRP）实现机制WA2WP（Web Application to WSRP Portlet）,可将普通Web网站映射封装为虚拟门户组件发布;给出了改进的跨域单点登录机制SSO4EPI（Single Sign On for Enterprise Portal Integration）,可提供开放的接口形式和对跨安全域异构性的良好支持。最后结合应用实例说明以上方法的可行性和推广价值。     

基于多源数据集成的松嫩平原

以数字地球科学和数据仓理论为指导,以3S技术、环境模拟技术和计算机编程技术为手段,根据空间信息与非空间信息在地理单元和空间上的存储特征,建立了基于域和对象的公共数据模型,继而构建了不同专属性的空间数据库。以此为基础,通过应用空间数据引擎和空间数据操作对象,首次对面向应用的松嫩平原土地资源空间数据仓进行了分析与设计。     

一种基于灵活市场的区分服务网络定价策略

基于区分服务的网络模型,提出了一种新的灵活市场的定价策略。为了使定价策略能够更好地应用在区分服务网络中,在边界路由器中使用了探测和反馈机制,并且对灵活市场定价策略中的竞标值进行了归一化处理。通过仿真实验验证了基于区分服务模型的灵活市场定价策略的自适应性。     

基于网格的视音频信息服务平台研究*

视音频信息处理技术是信息技术的重要组成部分,它的特点是需要处理的信息量大,信息管理、存储复杂,共享和交互的要求高。利用网格技术共享性和分布式的优势,在网格资源管理模块（GRAM）和存储模块（GASS）上构建视音频信息资源管理系统,在网格元计算目录服务模块（MDS）和安全认证中心（CA）上构建视音频信息服务和信息安全保障系统,从而构建了新一代具有共享性和交互性的视音频信息服务平台。它使得影视、娱乐和资讯等媒体信息更加融合在一起,在信息时代将有广泛的应用前景。