开放系统中的互操作性

互操作性是开放系统和分布式计算领域中的关键技术之一。本文从几个不同的侧面对互操作性进行了详细的论述，包括：互操作性内涵的澄清，互操作性的分类和中间件技术。最后本文给出了一个已经实现了的互操作中间件ＯＳＥｗａｒｅ的设计思想，另餐，本文还指出了对互操作性作进一步研究的两个方向，面向对象的互操作，ＯＤＰ和ＣＯＲＢＡ之间的互操作。     

基于CORBA的分布式对象应用的实现

在异质分布式计算环境中必须要解决互操作性问题：本文介绍了支持分布系统互操作的标准：ＯＳＦ的ＤＣＥ和ＯＭＧ的ＣＯＲＢＡ。并就一个实例给出了基于ＣＯＲＢＡ的分布式对象应用的解决方案。     

CORBA:全面的分布式对象计算(下)

文章是［１］的续篇,讨论ＯＲＢ和对象适配器（Ｏｂｊｅｃｔ　Ａｄａｐｔｅｒ）对服务对象的管理,及ＯＲＢｓ间的互操作性问题。并指出ＣＯＲＢＡ和ＪａｖａＢｅａｎｓ结合的趋势,最后比较ＣＯＲＢＡ与ＲＭＩ、ＤＣＯＭ的性能。     

GIS互操作性初探

互操作性是ＧＩＳ发展的趋势,它实现窨数据和系统操作的共享。实现互操作性是ＧＩＳ用户的要求,万维网的发展为ＧＩＳ互操作性提供了技术基础。分布式空间数据模型和ＧＩＳ部件化是互操作笥ＧＩＳ的特征,Ｏｐｅｎ ＧＩＳ政致力于互操作性ＧＩＳ的空间标准。     

开放的异种对象标识及绑定机制研究

随着各种分布对象计算系统的广泛使用,异构对象系统之间的互操作已成为必要。其中,ＣＯＭ／ＣＯＲＢＡ互操作是最为迫切的,很多ＣＯＲＢＡ产品遵照ＯＭＧ组织的ＣＯＭ／ＣＯＢＡ互操作规范提供了互操作功能。然而规范中异种对象的标识及绑定机制存在问题,影响了应用程序的可移植性和互操作系统之间的互操作性。文中将互操作中异种对象的标识和绑定机制形式化地描述为异种对象标识空间的映射,在此基础上归纳出３种对象标识方法和     

一种实现互操作的分布式集成框架的设计与实现

互操作性问题是分布计算中需要解决的关键问题。这一问题可以通过多种途径加以解决,其中面向对象的集成框架是一种比较好的解决方法。文中首先研究了互操作性的概念,实现主面向对象方法对互操作性的支持机制;在对ＤＣＥ机制和ＣＯＲＢＡ的ＯＲＢ机制比较的基础上,采用面向对象方法和技术,开展了基于Ａｇｅｎｔ的分布客户／服务器集成框架的研究,提出了一种基于Ａｇｅｎｔ的分布式通用框架,以支持客户／服务器应用的开发和实现     

VCON主持H.323互操作性测试会议——H.323标准产品发布前的最后测试

ＶＣＯＮ主持Ｈ．３２３互操作性测试会议——Ｈ．３２３标准产品发布前的最后测试ＶＣＯＮ公司作为视频会议技术的领导者，在以色列，耶路撒冷主持了ＩＭＴＣ（ＩｎｔｅｒｎａｔｉｏｎａｌＭｕｌｔｉ－ｍｅｄｉａＴｅｌｅｃｏｎｆｅｒｅｎｃｉｎｇＣｏｎｓｏｒｔｉｕｍ，...     

基于OLE／COM的多媒体作品管理系统

组合软件技术代表了新一代软件技术的发展方向，Ｍｉｃｒｏｓｏｆｔ的ＯＬＥ／ＣＯＭ正发展成为软件部件的一种标准。本文描述了ＯＬＥ／ＣＯＭ的原理及特性，并实现了一种基于ＯＬＥ／ＣＯＭ的多媒体作品管理系统。     

CORBA在TINA网络和业务管理中的应用

ＣＯＲＢＡ规范定义了能支持互操作性的接口和业务,ＴＩＮＡ为基于ＣＯＲＢＡ的业务开发和网络管理应用定义了框架结构,文中给出了具体的应用方法及其与当前使用较多的ＴＭＮ框架的互操作     

基于构件复用的软件方法与COM支持

作为研究的热点,近年来提出的构件模型层出不穷。出于相互之间互操作性的考虑,必须具备一个公共的构件底层框架。分析各种实际的因素,ＣＯＭ是一个可行的选择。文中讨论了ＣＯＭ规范对组件复用的支持及其发展前景,提出了基于ＣＯＭ的复用思想：以接口的标准化推动服务的标准化,为复用软件的开发和使用建立规范。     

A semantic interoperability framework for software as a service systems in cloud computing environments

In cloud computing environments in software as a service (SaaS) level, interoperability refers to the ability of SaaS systems on one cloud provider to communicate with SaaS systems on another cloud provider. One of the most important barriers to the adoption of SaaS systems in cloud computing environments is interoperability. A common tactic for enabling interoperability is the use of an interoperability framework or model. During the past few years, in cloud SaaS level, various interoperability frameworks and models have been developed to provide interoperability between systems. The syntactic interoperability of SaaS systems have already been intensively researched. However, not enough consideration has been given to semantic interoperability issues. Achieving semantic interoperability is a challenge within the world of SaaS in cloud computing environments. Therefore, a semantic interoperability framework for SaaS systems in cloud computing environments is needed. We develop a semantic interoperability framework for cloud SaaS systems. The capabilities and value of service oriented architecture for semantic interoperability within cloud SaaS systems have been studied and demonstrated. This paper is accomplished through a number of steps (research methodology). It begins with a study on related works in the literature. Then, problem statement and research objectives are explained. In the next step, semantic interoperability requirements for SaaS systems in cloud computing environments that are needed to support are analyzed. The details of the proposed semantic interoperability framework for SaaS systems in cloud computing environments are presented. It includes the design of the proposed semantic interoperability framework. Finally, the evaluation methods of the semantic interoperability framework are elaborated. In order to evaluate the effectiveness of the proposed semantic interoperability framework for SaaS systems in cloud computing environments, extensive experimentation and statistical analysis have been performed. The experiments and statistical analysis specify that the proposed semantic interoperability framework for cloud SaaS systems is able to establish semantic interoperability between cloud SaaS systems in a more efficient way. It is concluded that using the proposed framework, there is a significant improvement in the effectiveness of semantic interoperability of SaaS systems in cloud computing environments.     

Interoperability test suite derivation for communication protocols

This paper addresses the problem of interoperability testing for communication protocols. We develop a coherent framework of interoperability testing in which the notions of interoperability, interoperability testing, interoperability test case and interoperability test architecture are interrelated and a systematic interoperability test suite derivation method based on the framework. The approach to interoperability testing is illustrated with the example of the ATM Signaling Protocol. To demonstrate practicality of the approach, we implemented executable test suites derived by the method on a commercial ATM test platform, applied them for interoperability testing of various ATM equipment and analyzed the testing results.     

Toward a business model reference for interoperability services

The importance of interoperability for businesses is undoubted. After an evolution from electronic data interchange to interoperability in electronic business and enterprise interoperability both the scientific and the practitioners’ community are today discussing the notion of interoperability service utilities. Furthermore, researchers are studying decentralized and distributed interoperability approaches such as peer-to-peer networks, for example. However, a comprehensive investigation of business models for such decentralized approaches to interoperability is still missing. Drawing from recent literature on business modeling on the one hand and interoperability research on the other hand this paper designs a business model reference for interoperability services. The business model reference assumes interoperability information as an economic good and is applied in two case studies and evaluated from multiple perspectives. The paper contributes to the scientific body of knowledge as it proposes a novel design artifact which lays the foundation for a number of future research opportunities.     

软件互操作研究与进展

软件互操作是开放分布式处理中的一个重要目标。文中首先讨论了软件互操作的基本原理，并重点介绍了当前具有代表性的互操作方法，评述了它们的优缺点。在此基础上，提出并简单介绍了面向应用框架的互操作方法。     

开放系统中互操作技术的发展和前景

经历九十年代的持续实践,采用“开放系统”的思想来集成大型计算机系统,已成为技术界不争的事实。然而,完善的开放系统的实际形成有赖于“互操作性”的实现。本文将以互操作性为对象,探讨近十年来人们对其认识的深化,为有关挑战性难题所作的突破,以及未来发展的前景。     

A generic interoperability testing framework and a systematic development process for automated interoperability testing

Interoperability is a prerequisite to allow users to access systems implemented by different vendors seamlessly. A good baseline to achieve interoperability is the implementation of a common set of standards. However, this is often not sufficient as different implementations of a standard are not necessarily interoperable. Therefore, different implementations of systems need to be assessed for interoperability by applying interoperability testing. In this article, we present a generic framework that enables automated interoperability testing with message checks, which assess the compliance of messages exchanged between systems. The goal of this framework is the provision of a basic functionality of interoperability test entities, the definition of a generic interoperability test environment, and guidelines for the specification of automated interoperability tests. The framework also considers aspects related to interoperability testing including verdicts, automation, and limitations of the system under test. Through the application of the framework, interoperability of systems can be assessed, systems can be validated, and standards can be improved. In addition, we present a systematic development process for automated interoperability tests to formalize the development and specification of an interoperability test system. We also consider aspects and critical issues, which are important for the development of a complete interoperability test system. The framework and the process are language and system technology independent. We present their application in a case study that includes interoperability tests for the Internet Protocol Multimedia Subsystem (IMS) using the Testing and Test Control Notation Version 3 (TTCN-3).     

A survey on the service interoperability in cloud computing: Client-centric and provider-centric perspectives

The vendor lock-in is a prominent issue in cloud computing. It is caused by cloud providers who offer proprietary services, which hinders the cloud interoperability. Client-centric interoperability enables the migration of the data and applications across clouds; it gives the clients control over their workloads and a wider range of service choices. Whereas, provider-centric interoperability allows the providers to collaborate. Thus, providers, who have spare resources, can lend them to other providers who lack computational or storage capabilities to overcome the limitations of their local resources. In this article, we conduct a survey to differentiate between client- and provider-centric interoperability solutions. We aim to provide an up-to-date analysis of the current tendencies and the neglected areas of the cloud interoperability field. Thus, we study the cloud service interoperability evolution through the years. Furthermore, we propose definitions for the intra-cloud and inter-cloud interoperability. Moreover, we propose a taxonomy to classify the cloud interoperability approaches into client-centric and provider-centric categories. Then, for each category, we classify the approaches based on their interoperability environment into single cloud or interconnected clouds. Finally, we analyze and compare the approaches based on multiple criteria. The study reveals the focus on the client-centric solutions and the interoperability in interconnected clouds. We notice more interest in the data and application levels interoperability, mainly, in infrastructure as a service model. We also find that client-centric solutions are, mostly, semantic technologies and brokers. However, provider-centric solutions are middleware, protocols, and standards. We conclude that a generic cloud service interoperability model is needed.     

异构组件互操作研究

目前工业级的分布式组件模型有:DCOM,CORBA以及EJB.不同组件模型间缺乏统一的互操作标准,形成了企业内部应用集成和跨企业应用互操作的瓶颈,总结了目前实现异构组件互操作的主要方法并分析了其不足.Web Services的出现为实现异构组件互操作提供了新的契机,提出了基于Web Services的异构组件互操作方案,并以CORBA为例,说明了分布式组件与Web Services的集成.     

数字图书馆网格互操作框架

随着全球数字图书馆(DLs)的迅猛发展,互操作成为亟待解决的重要问题。目前DLs互操作的主要解决方案包括:分布式搜索、元数据收集、中间件技术等,在实现大规模的数字图书馆互操作方面都存在一定的局限性。文章通过对已有方案的分析和对比,指出各自的优势和不足,并在OAI-PMH框架的基础上,结合先进的网格技术,提出全新的数字图书馆互操作框架—数字图书馆网格DLGrid,为解决大规模数字图书馆的互操作提供一种新途径。