Resource Management Middleware for Dynamic,Dependable Real-Time Systems

Thispaper presents resource management techniques that achieve thequality of service (QoS) requirements of dynamic real-time systemsusing open architectures and commercial off-the-shelf technologies(COTS). Dynamic real-time systems are subject to constant changessuch as a varying external environment, overload of internalsystems, component failure, and evolving operational requirements.Examples of such systems include the emerging generation of computer-based,command and control systems of the U.S. Navy. To enable the engineeringof such systems, we present adaptive resource management middlewaretechniques that achieve the QoS requirements of the system. Themiddleware performs QoS monitoring and failure detection, QoSdiagnosis, and reallocation of resources to adapt the systemto achieve acceptable levels of QoS. Experimental characterizationsof the middleware using a real-time benchmark illustrate itseffectiveness for adapting the system for achieving the desiredreal-time and survivability QoS during overload situations.     

基于SOA的数字电视中间件系统的研究与实现

针对数字电视制播系统应用集成时存在的异构问题．对数字电视中间件系统进行研究。提出数字电视发送端制播系统中间件的基本思想。该系统技术架构为SOA服务架构，体系结构模型采用琰沿服务总线，其基于Web服务等特性解决了异构网络的配置和协议的可重用性等问题，基本实现了数字电视演播室的互操作性和平台无关性．完成应用系统的集成。     

基于SOA的数字电视中间件系统的研究与实现

针对数字电视制播系统应用集成时存在的异构问题,对数字电视中间件系统进行研究。提出数字电视发送端制播系统中间件的基本思想。该系统技术架构为SOA服务架构,体系结构模型采用ESB服务总线,其基于Web服务等特性解决了异构网络的配置和协议的可重用性等问题,基本实现了数字电视演播室的互操作性和平台无关性,完成应用系统的集成。     

支持Saas模式的消息中间件实时性的研究

伴随企业的飞速发展,针对数据传输系统提出了多方交互传输、传输量大、实时性及安全性要求高等新的需求.文中指出了基于点对点(PTP)和发布何阅(Pub/Sub)通信模式的消息中间件不能很好地支持这些新的需求,在实际系统应用中根据消息规模和实时性要求采用Pub/Sub,PTP和混合通信模型多种通信方式相结合的方式,提出一种基于Pub/Sub和PTP的改进的混合通信模型,并对实现的关键技术给出策略.实验结果表明,在安全的同时,消息的传输率得到了一定的提高.     

构建可靠的网络入侵检测系统测试

网络入侵检测系统同其他安全系统一样也需要进行测试,但它具有其独特的测试要求,以确保他们达到预期的性能,并指明在何种情况下,他们可能会失败。然而,不同于其他系统的的地方是,测试数据很难得到或购买到。文章将对网络入侵检测系统的测试提出一些基于适当的网络追踪的建议,以期望能形成一套用于网络检测和网络安全领域的公共的基于网络追踪的方法。     

使用发布订阅中间件支持移动计算

提出了一个扩展发布订阅中间件以支持移动计算的新协议．该协议针对移动计算的需求，由老的事件代理暂存客户移动期间到达的消息，客户在连接到新的事件代理后，消息被自动有序发送给客户，保证了移动透明性．此外协议采用同步算法和消息合并操作防止了消息丢失和重复．移动客户可以在不同的地域与不同的事件代理节点连接和可靠接收消息．实验表明谈协议完全满足移动应用的要求，保证了应用的透明性、消息完整性和有序性．     

基于SOA架构的首都机场中间件平台的设计与实现

以首都机场信息系统集成项目为背景,本文主要介绍了基于SOA架构的首都机场中间件平台的设计与实现,以及通过该平台实现的业务标准、数据标准的统一以及硬件平台的整合。     

Middleware Support for Transparent Client-Side Caching

This paper reflects on existing caching concepts in proxies and stubs of component technologies and lines out their advantages and deficiencies. A new concept is introduced that averts proliferation of component stubs on client side while transparently providing efficient caching of attributes that doesn't require any changes to existing code at all. Common object-oriented design facilities and code generation tools are leveraged to support seamless integration of these caching concepts into the development cycle.     

Dynamic SOA Framework to Support Ad Hoc Enterprise Alliance Formation

Collaboration among businesses is needed to successfully fulfill a given task and goal. Service-Oriented Architecture (SOA) has been regarded as an efficient platform to support flexible interoperability among various enterprises by discovering, selecting and composing services. However, since a large number of enterprises have been participating in this SOA platform, relationships among these enterprises are getting too complicated to obtain flexibility and scalability for efficient collaboration. Thereby, in this paper, we propose a dynamic SOA platform to discover service chains for building ad hoc enterprise alliances where the only relevant enterprises are sorted out and merged. As a result, given an event, decision makers can find out which enterprises (and services from the enterprises) might be selected for their collaboration. The proposed SOA platform has been applied to mobile advertisement application as a case study. With respect to two indicators (i.e., precision and agility), we have shown that the proposed SOA outperforms traditional enterprise collaboration schemes.     

基于中间件技术的远程多媒体教学支撑平台

针对传统模式开发的缺点,尝试在多媒体教学支撑平台系统开发过程中引入中间件技术.首先讲述了基于中间件的系统设计,然后介绍平台设计中使用的技术,最后列出了教学平台实现后所具备的功能.     

使用中间件构筑三层结构

讲述了三层结构的体系,并着重描述了三层结构中中间层的组成部分——中间件,对中间件的概念、功能、种类以及未来中间件的发展作了阐述。     

基于SOA与资源即插即用的RFID中间件

融合各种通信网络异构性的无线泛在网将成为网络发展的必然趋势。为实现无线业务的泛在化,提出一种基于SOA与资源即插即用功能的泛在网RFID中间件架构,使其能在未来的基于Web的无线泛在业务环境体系架构中完成智能感知设备资源的即插即用特性。介绍了该架构逻辑框架中各部分的功能与实现方法,并通过具体应用系统验证了该架构不仅可以解决RFID设备与应用系统之间的紧耦合问题,而且能够实现单一物理设备服务多种业务应用的需求。     

A Service-Oriented Middleware for Building Collaborative UAVs

For a while, Unmanned Arial Vehicles (UAVs) use was limited to military applications, however recently UAVs are also used for a wide range of civilian applications. Some of these UAV applications may involve multiple UAVs that must cooperate to achieve a common goal. This kind of applications is termed collaborative UAV applications. This paper investigates the collaborative aspects and challenges of multiple UAV systems. One of the main issues for multiple UAV systems is developing an effective framework to enable the development of software systems for collaborative UAV operations. One possible approach is to rely on service-oriented computing and service-oriented middleware technologies to simplify the development and operations of such applications. This paper discusses how the service-oriented middleware approach can help resolve some of the challenges of developing collaborative UAVs. The paper also proposes a service-oriented middleware architecture that can satisfy the development and operations of such applications.     

基于RFID和SOA的工业企业业务集成系统中间件研究

为使工业企业各类信息资源之间能有效整合、关联、协同、互动和按需服务,基于RFID的现代企业物联网系统技术和面向服务的架构技术,提出了一种将系统服务、业务人员、业务流程、业务应用、业务规则、业务数据等各类资源贯穿起来的工业企业业务集成系统中间件实现方案。该实现方案具有高度的可定制性,高可重用性,能针对不同的企业特征或需要迅速进行二次开发,及时的地进行业务调整和流程重组。     

Building a Distributed E-Healthcare System Using SOA

This article describes a distributed e-healthcare system that uses the service-oriented architecture as a means of designing, implementing, and managing healthcare services. Medical monitoring devices worn by the patient, and frequent electronic communication between the patient and a nurse, can ensure that the prescribed treatment is being followed and that the patient is making good progress. The e-healthcare system described here can be readily extended to other healthcare professionals, including medical technicians who perform and report tests and analyses requested by physicians. In addition, the system can be interfaced to other applications that provide information on medications and dosages and warn of interactions between medications. Finally, it can be interfaced to drug-delivery devices that prompt and monitor the regular and timely consumption of medications.     

基于SOA和中间件的综合安防平台的设计

为了解决目前企业级各类异构安防平台间信息缺乏交流和共享而导致的"信息孤岛"问题,以及安防平台建设中应用体系架构不足问题,本文提出了一种基于SOA架构和中间件技术的企业级综合安防平台。阐述了SOA架构和中间件技术下实现各类异构安防平台互通、软件复用、异构数据交换与数据共享,从而实现企业原有单个独立解决特定功能的安防子系统之间的协同运作,并有效地将已存在的相关应用业务和新的应用业务整合为一体。     

支持国产密码算法的Windows下密码安全应用中间件

本文提出一个在Windows操作系统下开发密码安全应用中间件的解决方案,包括四种中间件:“基本密码服务中间件”、“PKI应用中间件”、“MS-Office安全加密中间件”和“Windows系统登录认证中间件”。     

一种可信的服务组合QoS保障机制

针对目前服务计算模型中对应用的可信性支持不足,提出并设计了一种基于虚拟服务的服务可信性保障机制.组合服务中的各个任务环节由虚拟原子服务完成,通过对应用的QoS规划、服务组合以及资源调度方法以满足虚拟原子服务可信需求,进而保障组合服务的可信特性.经过实验验证,该机制可有效保障组合服务的可信QoS要求.     

基于分布式中间件技术的智能建筑集成管理系统

在所设计的智能建筑集成管理系统中,提出了基于分布式中间件技术的集成模型.由于在实现中采用了CORBA标准的对象请求代理中间件技术,该系统解决了不同设备子系统之间的异构和互联,实现了各子系统之间的互控、联动和协同工作;同时又具有较高的可靠性和灵活性,且易维护等优点.