Deploying the NaradaBrokering Substrate in Aiding Efficient Web and Grid Service Interactions

NaradaBrokering has been developed as the messaging infrastructure for collaboration, peer-to-peer, and Grid applications. The value of NaradaBrokering in the context of Grid and Web Services has been clear for some time. NaradaBrokering-combined with further extensions to, and testing of, its existing capabilities - can also take advantage of the maturing of Web Service standards and specifications to build very powerful general mechanisms to deploy and integrate it with general Web Services. This paper describes a framework to integrate the NaradaBrokering substrate with Web Services.     

The Future of Web Services

Much of the Web's success can be attributed to its simplicity. It offers a straightforward means by which static information could be published and interconnected on a global basis. The Web Services initiative effectively adds computational objects to the static information of yesterday's Web and as such offers a distributed services capability over a network. Web Services have the potential to create new paradigms for both the delivery of software capabilities and the models by which networked enterprises will trade. Today's Web Services technology, useful though it is, will be enhanced over the next 2-5 years by the harnessing of Semantic Web technology to deliver a step change in capability. Web Services provide an easy way to make existing (or indeed new) components available to applications via the Internet. However, currently, Web Services are essentially described using semi-structured natural language mechanisms, which means that considerable human intervention is needed to find and combine Web Services into an end application. The Semantic Web will enable the accessing of Web resources by semantic content rather than just by keywords. Resources (in this case Web Services) are defined in such a way that they can be automatically ‘understood’ and processed by machine. This will enable the realisation of Semantic Web Services, involving the automation of service discovery, acquisition, composition and monitoring. Software agents will be able automatically to create new services from already published services, with potentially huge implications for models of eBusiness. Having identified limitations in current Web Services technology, this paper will survey existing research in Semantic Web Services, most notably USA's DAML-S initiative and the European WSMF work, and describe BT's research into creating a set of tools to support next-generation Semantic Web Services. This revised version was published online in July 2006 with corrections to the Cover Date.     

Web Services应用于电力GIS的探讨

近几年GIS在电力系统得到了广泛的应用。Web Services的出现,将改变在Web上进行软件设计的方法,也将引起电力GIS体系的变革。通过对电力GIS单个事例的剖析,给出一个基于Web Services的WebGIS三层系统构架模型并进行论述。基于Web Services开发的电力GIS具有系统扩展性强、代码重用度高的特点。其同时也是解决目前WebGIS系统所面临的问题的有效途径。     

Mobile Web Services

Web Services provide a technology for expressing the interactions between customer and business partners, as part of their business processes. Mobile Web Services apply Web Services technology to the mobile environment, enabling exciting new services to be offered to consumers on their mobile telephones, wireless-LAN-enabled PDAs and laptop computers. This paper provides an overview of mobile Web Services. It proposes an architecture for the deployment of mobile Web Services, highlighting the components required for Web Services to provide a personalised mobile service. Current real world Web Services and the future for mobile Web Services are also discussed.     

Giving Legs to the Legacy — Web Services Integration Within the Enterprise

Behind the hype of Web Services (WS) is the reality of a sound and functional set of technologies for integration. This paper describes how the pragmatic use of WS technology has resulted in better, cheaper and faster integration for BT in its core operational support systems (OSS) system interfaces. BT has embarked upon a programme of enabling key components and middleware layers in its customer handling stack to leverage the benefits of Web Services in addressing the challenge of real-time heterogeneous interworking. It is believed that the WS-enabling of these legacy systems has helped add years to their productive use and protected the huge investment already made in these systems. As well as giving ‘legs’ to such legacy systems, Web Services support the drive to implement a service-oriented architecture inside BT and this paper investigates the ways in which this is being achieved. In order to exploit Web Services on BT's mission-critical platforms we have had to understand and work with WS issues on a wide range of platforms, proving the interoperability, performance and security of the new technologies in large-scale enterprise integration projects. Integration has been the first ‘killer application’ for Web Services and this paper will describe some of the business areas that have benefited from the cleaner integration that Web Services offer. This revised version was published online in July 2006 with corrections to the Cover Date.     

WS/PIDS: standard interoperable PIDS in web services environments

An electronic health record depends on the consistent handling of people's identities within and outside healthcare organizations. Currently, the Person Identification Service (PIDS), a CORBA specification, is the only well-researched standard that meets these needs. In this paper, we introduce WS/PIDS, a PIDS specification for Web Services (WS) that closely matches the original PIDS and improves on it by providing explicit support for medical multimedia attributes. WS/PIDS is currently supported by a test implementation, layered on top of a PIDS back-end, with Java- and NET-based, and Web clients. WS/PIDS is interoperable among platforms; it preserves PIDS semantics to a large extent, and it is intended to be fully compliant with established and emerging WS standards. The specification is open source and immediately usable in dynamic clinical systems participating in grid environments. WS/PIDS has been tested successfully with a comprehensive set of use cases, and it is being used in a clinical research setting.     

基于XML和Web Services的数据交换平台的研究与设计

XML自描述性和平台无关性使得它已经成为通过互联网在各种异构系统间交换和共享数据的强大工具。Web Services技术提供了不同平台上以不同语言开发的应用程序相互通信和互操作的标准手段。文中提出了一种基于XML和Web Services技术的数据共享交换平台模型，阐述了这种模型的结构和实现技术。     

Parlay X Web Services

The Parlay X specification describes a number of Web Services that will provide a simple interface to telephony and other systems. Other telephony interface initiatives have addressed the needs of complex and niche applications. The Parlay X initiative has set out to address the needs of the wider population of application developers. These application developers should be able to create telephony applications with little or no knowledge of the underlying network. Version 1 of the specification is complete and should be released to the public in the near future. This version covers third-party call control, SMS, multimedia messaging, payment, account management, user status and user location. This paper discusses the motivation for these new initiatives and presents an overview of the specifications and also gives an insight into the implementations available. This revised version was published online in July 2006 with corrections to the Cover Date.     

基于角色的Web Services访问控制系统

首先对Web Services的安全技术和访问控制的研究情况进行简单回顾,介绍XACML(eXtensibleAcces s Control Markup language)中的常用术语,然后介绍了一个Web Services的面向服务的基于角色的访问控制系统和安全结构模型,从服务方面和属性方面加强对服务的访问控制.在该体系结构模型中,使用SOAPProxy加强对Web Services的访问控制.通过设计安全cookies和安全SOAP消息,在Web Services上实现基于角色的访问控制.最后给出此系统有待解决的问题.     

An introduction to Web Services

This paper provides an introduction to Web Services. A brief history of Web Services is given, leading into an overview of the key Web Services technologies. The paper describes the way in which the IT industry has embraced Web Services and the uses to which the technologies are currently being applied. It concludes with a view of the role of both the key developers and standards bodies in the creation of Web Services and discusses the ways in which this process needs to be supported in order for Web Services to evolve. This revised version was published online in July 2006 with corrections to the Cover Date.     

Web Services in Communications Services

The tremendous potential of Web Services to revolutionise distributed computing has been the subject of intense excitement across the spectrum of IT professionals. The communications industry has also realised the potential for using Web Services for constructing communication solutions. However, as yet there are relatively few real implementations of the technology, especially when applied to the real-time communications space. This paper describes a case study of a BT product that uses web services to offer real-time communications capability. The experiences gained during the development and deployment of this service are described. Based on these experiences, a future service with a richer set of capabilities is then proposed. This revised version was published online in July 2006 with corrections to the Cover Date.     

Web服务及其在Parlay接口中的应用

电信网与Internet走向融合，而Parlay接口与Web服务作为各自领域开放技术的代表，也开始了互相结合。Web服务是一种基于可扩展标记语言（XML）、面向消息的分布式计算技术，与公共对象请求代理体系结构（CORBA）等分布式对象技术相比，在Internet范围内的互操作性更好。Web服务是实现面向服务体系结构（SOA）的最佳候选技术之一。基于Web服务的Parlay接口包括Parlay Web服务和Parlay X。其中，Parlay Web服务模拟面向对象的Parlay应用编程接口（API）定义，Parlay X的设计遵循Web服务面向消息的技术发展思路。基于Web服务的Parlay接口技术为构建电信网和Internet融合环境下的统一业务体系提供了基础。     

An Overview of Web Services Security

Security and Web Services are consistently reported among the top technologies of interest to businesses. Concerns about security are a major deterrent to companies considering use of the technology. This paper attempts to give an overview of the current state of Web Services security. The main body of the paper is a tour through key concepts used in Web Services security. Examples based on software demonstrators built by the authors are used to explain how the ideas are used in combination to achieve particular aims. The state of play as regards standards is also reviewed. The concluding section gives some pointers as to active research topics. This revised version was published online in July 2006 with corrections to the Cover Date.     

Mobile network evolution: a revolution on the move

This article gives an overview of the evolution in the mobile communications world. The uptake of 2G technologies has been tremendous, even though several systems exist that are not interoperable. 3G will bring some convergence, but will not achieve the goal of a single global technology. At the network level, IP is becoming more important. In hot spot environments, WLAN is bringing a complementary technology toward cellular     

基于Proxy模式的Ajax和Web Services框架研究

Ajax是一种创建交互式网页应用的网页开发技术,Web Services是一种构建应用程序的普通模型,介绍了Ajax和Web Services技术及其原理,总结并分析了目前二者集成的Web框架,指出了框架所存在的缺陷,提出了一种基于Proxy模式的集成框架.     

基于Web Service的组件管理系统

为有效管理已有组件,设计了一个组件管理系统。并通过Web Services技术将该组件库中的组件所提供的功能以服务的形式在Internet上发布,以解决异构分布式组件的互操作问题。     

基于Web Services网络黄页系统研究

主要介绍利用Web Services技术构建设计了一种新的网络黄页平台之间的数据交换系统,以此网络黄页平台间的异构平台数据交换问题,实现异构平台数据的按需交换。描述了总体系统的设计原理、关键技术、总体结构,并对主要的功能模块做了详细分析,同时就关键问题进行了论述,给出了解决方案。     

基于J2EE面向服务的工作流管理系统

Web服务技术的蓬勃发展,进一步促进了面向服务架构(SOA)的繁荣,越来越多的组织机构已经或正在准备接纳这一新技术来构建基于Web服务的应用.传统的工作流管理系统已经不能满足业务集成的需要,新一代的工作流管理系统必须提供对Web服务的支持.文中提出了一个称为"SOFlow"的面向服务的工作流管理系统,并对该系统的体系架构进行了分析,给出了该系统的一个具体实现.     

（ASP）.NET中基于等待的Web服务异步调用技术

Web服务是一种新兴的Internet环境中的分布式组件开发技术。介绍．NET中基于等待的Web服务的异步调用技术,并通过具体示例说明其应用模式。     

Towards a Ubiquitous Robotic Companion: Design and Implementation of Ubiquitous Robotic Service Framework

In recent years, motivated by the emergence of ubiquitous computing technologies, a new class of networked robots, ubiquitous robots, has been introduced. The Ubiquitous Robotic Companion (URC) is our conceptual vision of ubiquitous service robots that provide users with the services they need, anytime and anywhere in ubiquitous computing environments. To realize the vision of URC, one of the essential requirements for robotic systems is to support ubiquity of services: that is, a robot service must be always available even though there are changes in the service environments. Specifically robotic systems need to be automatically interoperable with sensors and devices in current service environments, rather than statically preprogrammed for them. In this paper, the design and implementation of a semantic‐based ubiquitous robotic space (SemanticURS) is presented. SemanticURS enables automated integration of networked robots into ubiquitous computing environments exploiting Semantic Web Services and AI‐based planning technologies.