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Service interface description is one of the most important problems in services-oriented software architecture, and formal description methods are considered to be a promising approach for service interface. Presently the typical Web service description language (WSDL) only provided the syntax level information that needed by the service interaction without containing the dynamic behavioral protocol...
To simplify distributed application development, based on the principles and norms of SOA (Service-Oriented Architecture), the workflow engine is designed to manage the system's business flow. Finite state automaton is used as the theoretical foundation of workflow's definition, defining a process as a task, giving the task determinate states, and deciding the state of the task according by the states...
In recently years, the Web service composition becomes a new approach of distributed application integration. The time cost of the composed Web service is one of the most concerned characters by users. Due to the long delay and uncertainty of the Internet, the performance prediction becomes a difficult problem for the Web service composition. A novel performance simulation model, called STPM, is presented...
It becomes a rapidly growing software developing pattern to create new Web services by composition of existing Web services. Since there are lots of Web services that perform similar or identical function but have different quality of service (QoS), it is essential to choose the proper services to compose the composite Web services that meet userspsila requirements. Because manual composition is inefficient,...
Recently, Web Service technology has found its application in workflow management for supporting loosely coupled E-business processes. However, current Web services languages do not permit to describe distributed E-business services by lack of expressive power and formal semantics. This paper presents a novel method for modeling distributed E-business service composition with pi-calculus technology...
Generally, every Website provides its own resource upload and download modules for users to share resources. However, the resources uploaded to Websites' servers are often lack of unified and professional management. Whatpsilas more, when the amount of user using the upload and download modules increases, it will put a big pressure on the Websitepsilas server in term of bandwidth. To solve these problems,...
Pervasive computing technology plays a key role for providing context information and offering context-aware services, which allows users to obtain digitized contents and services from wired and wireless networks virtually anywhere at any time via different handheld mobile devices. In this paper, we propose an agent-based context-aware middleware for pervasive computing environment, which is implemented...
How to find suitable geospatial information in an open and distributed environment of geospatial Web services (GWS) is a crucial task. However, semantic heterogeneity came to us as a growing hard problem which impedes the deep applications of GWS. For solving this problem, an ontology-based framework for GWS is provided in this paper. This framework can help us finish the following tasks: (1) supplying...
As Web services are the hotspot technology in heterogeneous application, Web services distributed management (WSDM) specification is being the focus one in the management domain. With its well-defined and extensible manageability capabilities applied for various network resources, we improved our originally proposed TcpSocket-based Topology Management System (TMS) in distributed WAN. Under the Ethernet...
This paper discusses the application of open community for the emergency information services during a disaster with the lessons learned from the 2008 Sichuan earthquake. An open community approach enables open participation for information collection and sharing. The suggested ldquodual modelrdquo allows a two-way-traffic from citizens to officials and from officials to citizens. The latest Web services...
Web applications are widely used. Generally, they are built by the integration of many loosely coupled and reusable services using open standards. It has become more and more difficult to testing Web applications automatically. This paper presents a system for Web functional test which can absolutely simulate manual operations. We propose a new test cases structure in XML description (called as X-Case)...
Business-end programming can enable end-users to develop software just-in-time. Existing business programming approaches lack guidance for end-users who have little experiences for development. Meanwhile the efficiency of development is low and the correctness of application systems are difficult to guarantee. So a novel business-end programming approach based on domain expert system (DES) was proposed...
With regard to the failure and cancellation of business logic of Web services composition, we present a composition compensation mechanism based on paired net to implement partial or full compensation of the committed activities. The introduction of this method can accurately construct SCPN and establish agile compensation-triggered mechanism which can satisfy prospective compensation requirements,...
Semantic heterogeneity of information is a major barrier in the business-to-consumer (B2C) e-commerce arena. Defining ontology of data and mapping ontologies among heterogeneous information repositories is one approach to achieve interoperability. By standardizing ontologies, message content and message protocols, the semantic Web can make matchmaking process more flexible and automated. This paper...
At present, Web applications and HTTP requests on the Internet are so explosively increasing that a large number of hot Web sites frequently confront with problems of server overloading. And how to provide various web services with high-level quality and satisfactory performance for Web clients has become one of the most urgent points we concern. In order to smoothly solve these problems, we proposed...
To generate test cases for the unit testing of business process written in BPEL, developers have to prepare input data for the BPEL process under test (PUT) and verification conditions for output data from the PUT. It could be a tedious task due to the complexity of the PUT which describes the Web flow of a distributed collaboration of individual service providers executing concurrently. This paper...
With the latest semantic annotation specification SAWSDL provided by W3C, web service components were annotated, and annotation process and method were discussed in detail. At the same time, a framework for web services matching and composition was present and its prototype was developed. Service matching algorithms, which were integrated in a service template, were stressed from aspects of function...
Supplier lies in first node of SC (supply chain). Rational supplier evaluation and selection are important to the whole SC's agility and competition. Based on analysis of supplier management, supplier evaluation guide line is discussed in paper. Then neural network-based supplier evaluation model is established. BP dynamic neural network is applied in constructing model and the amelioration weight...
Rough sets theory is applied to the service matchmaking algorithm for pervasive computing. The relevant service matchmaking algorithm model and method are presented in the paper. The decision system is built on the basis of the sample data from service resources. The evaluation indexes for service matchmaking are taken as the attributes to find out the important attributes that reflect the essential...
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