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Web services are designed to be discovered and composed dynamically, which implies that testing must also be done dynamically. This involves both the generation of test cases and the checking of test results. This paper presents algorithms for both of these using the technique of algebraic specification. It focuses in particular on the problem that web services, when they are third-party, have poor...
The testing of web services must be done in a completely automated manner when it takes place on-the-fly due to third-party services are dynamically composed to. We present an approach that uses algebraic specification to make this possible. Test data is generated from a formal specification and then used to construct and submit service requests. Test results are then extracted and checked against...
The geospatial data such as ocean in situ observing data, remotely sensed data, and model output are produced in a distributed geographical environment. These data have significant scientific value to construct Digital Ocean. However, given the relatively high temporal frequency and the intrinsic spatial nature of the data, the data set is relatively difficult to use directly by Digital Ocean system...
The rapid development of ocean observing instruments makes the rapid increase in the amount and types of marine data, but with the deepening of the marine development, comprehensive utilization and research, traditional data management and use methods have been unable to meet all kinds of users. This paper proposed to implement distributed data management and application through service technology...
The Web-services stack of standards is designed to support the reuse and interoperation of software components on the Web. Semantic Web services envision the automated discovery and selection of Web services. The discovery and selection process finds matches between requirements and advertisements according to their semantic description. There are already some approaches available for matching of...
Based on the study of output data characteristics of storm surge forecast model and existing scientific data visualization methods of these data, this paper carries on a preliminary study on the WebGis-based storage and visualization of these data, and designs and implements a storm surge disaster visualization web application system based on sphere. This system provides a more intuitionistic method...
Nowadays, there are increasing amount of data fields of tide and tidal current gained from ocean dynamical environment real-time stereo monitoring platform, model calculation and numerical simulation. Collaborative visualization of these data fields on the internet is becoming increasingly important for the utility of data. In this paper, we summarize the characters of tide and tidal current data...
Software as a Service (SaaS) is essentially about delivering a software application as a service over the Web with a usage-based charging plan. Existing Web service subscription models do not consider the complexity of the application and the business environment; for example, multiple service elements with mutual dependencies derived from one application, or various business partnership models for...
With the number of registered Web services growing, Identifying desired Web service is crucial for Web users. Current keyword based service search are inefficient in two main aspects: poor scalability and lack of semantics. Firstly ,the users are overwhelmed by the huge number of irrelevant services returned. Secondly, the intentions of users and the semantics in Web services are ignored. We propose...
With the developing of spatial information and Internet technology, marine management departments begin to design and develop information systems on the basis of GIS technology. It helps government to improve their work efficiency. However different departments use different technologies, different data formats and different work flows, and one department can not access other departments' data or...
Software as a service (SaaS) provides software application vendors a Web based delivery model to serve big amount of clients with multi-tenancy based infrastructure and application sharing architecture so as to get great benefit from the economy of scale. Though SaaS application is usually developed with highly standardized software functionalities to serve as many clients as possible, many clients...
In seeking more profits, many business service providers have turned their attention to the technologies that can enable the delivery and operations of the network-delivered business services more efficiently and highly automated. To that end, many service providers have adopted the shared service model where the service offerings are shared across multiple customers to reduce the costs associated...
As a macro complex systematic engineering, the Digital Ocean project is an ongoing task in china. The mission of the Digital Ocean is to build an interactive network information system based on a three-dimensional globe. The Digital Ocean can help provide integrated information on historical, current and future states of ocean and coastal zone. This paper addresses the architecture of Digital Ocean,...
In the ocean dynamical environment real-time observing system of Taiwan Strait and adjacent maritime region, multiple observing data such as remote sensing data, structured data and so on are produced by the observing net from airspace, ocean surface, underwater space and ocean bottom. The data sharing and Web service is a key part to influence the application efficiency of the whole system. According...
Software as services (SaS) is emerging as a new application software delivery approach, and has extensively leveraged Web services and other SOA concepts and technologies. Compared to the traditional ones, SaS has the following distinctive features: application delivery over Internet, usage based pricing mechanism, etc. Potentially, this approach can significantly reduce the total cost of ownership...
In the ocean dynamical environment real-time observing system of Taiwan Strait and adjacent maritime region, multiple observing data such as remote sensing data, structured data and so on are produced by the observing net from airspace, ocean surface, underwater space and ocean bottom. The data sharing and web service is a key part to influence the application efficiency of the whole system. According...
A Web service usually serves many consumers, with each consumer having its specific functional or nonfunctional requirements. The Web service should be customizable to meet those requirements, as is especially apparent for complex Web services with large granularity such as software-as-service (SaS). This paper proposes an approach to facilitating Web service customization in the programatical way...
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