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Exploiting and exploring the data issued from heterogeneous sources present a challenge for scientists and decision makers alike. Despite the huge explosion and the availability of geospatial data, the entities that produce them have faced increasing difficulties at the level of harmonization of this information, and especially when it is dealing with structural heterogeneity (schematic). Indeed,...
The electric power system is a very large-scale system wherein a variety of apparatus and devices from power generation to consumer are systematically combined and operated by various applications in real time. In the past, each application was developed by itself with little or no thought given to interconnecting it with other applications. In line with the standardization requirements for information...
Web services allow organizations to capture their human and software-based capabilities as modular software components that are called remotely over a network. In such service-oriented settings, it is important to establish an agreement that sets the obligations of the service provider and the expectations of the service consumer. Since traditional approaches such as Service Level Agreements (SLAs)...
A simple yet powerful programming tool enabling in silico experimentation, end-to-end data management through web services as well as use of grid and cloud processing power is scientific workflows. This technology is receiving considerable interest in recent years primarily due to its ability to promote and support scientific collaboration among large distributed research teams. The paper reviews...
Ocean environmental information service applications are widely adopted to assist collection, storage and distribution of ocean environmental data. Unfortunately, a reference framework rarely rules the development of those systems, leading to poor software quality and bringing many troubles in the process of maintenance and integration. This paper presents a common development framework which supports...
Workflows provide a popular means for preserving scientific methods by explicitly encoding their process. However, some of them are subject to a decay in their ability to be re-executed or reproduce the same results over time, largely due to the volatility of the resources required for workflow executions. This paper provides an analysis of the root causes of workflow decay based on an empirical study...
Consider the implementation of heterogeneous data integration, this paper employs virtual view to design and implement data integration model based on middleware integration. The model that supported by XML technology, refer to the SQL language, its access interface is the Web Service, it effectively resolve the heterogeneous data exchange and sharing.
Reliability is an essential quality requirement for web services. Existing techniques for measuring reliability of web services mainly focus on failures caused by code-based defects. For data-centric web services, the reliability of services can be significantly affected by the quality of data used to provide services. However, the impact of data quality on the reliability of web services has rarely...
Large-scale data processing systems frequently require users to make timely and high-value business decisions based upon information that is received from a variety of heterogeneous sources. Such heterogeneity is especially true of service-oriented systems, which are often dynamic in nature and composed of multiple interacting services. However, in order to establish user trust in such systems, there...
Program development concepts are highly dependent on software architecture, complexity of algorithm, re-usability purposes, efficiency, efficacy, etc. The evolution of SAP development concepts reflects the changes through important milestones, such as mainframe, client-server and service-oriented architecture. Those issues can easily be resolved by making new programs which were impossible to handle...
Lifelog research often needs collaboration from many disciplines. Also most related works need very advanced expertise while chances to find all skilled members at one place are very rare. It also involves privacy and/or copyrighted materials where the mutual consent of the use of data is very important. Thus a secure Web-based service is a great way for researchers for technical collaboration to...
Sensor networks are often deployed with the purpose of providing data to large-scale information management and GIS systems, or to collect measurements for specific scientific experiments. The benefits of such use are clear and widely accepted. The reuse of observations in low-cost, lightweight, web applications and mashups is a further compelling use case for sensor networks, but requires provision...
Research in transactions planning has recognized the evolvement of Web Services as an industry standard to implement transactional business processes. We proposed a data modeling and contracting framework for Web services and in this paper we are exploring how our framework can help formally verify data integrity properties in an ad-hoc transaction.
Along with the proliferation of Web-delivered services and the wide adoption of popular Web technologies, it has been an emerging development style that composes services into Rich Internet Applications in the client-side runtimes, i.e. web browser. These service-oriented rich clients (SoRC) have to access and process client-side data for rich user experiences. Though server-side data access has become...
This paper proposes a two-level programming model based on spreadsheet and data flow chart for end-user programming, which adopts spreadsheet-based top-down construction pattern and dataflow-based bottom-up modification pattern to compose mashup applications. The model can not only provide users with spreadsheet-like programming style, but also provide flexible modification operators for mashups to...
This article describes and analyses the current situation about data integration of isomerous data platform, and puts forward isomerous data integration plan based on the adapter. In the article, I adopted the adapter technology to realize isomerous data exchange model, and enveloped the adapter function in Web service in order to dispose the adapter by the distributed computing way. The goal of isomerous...
Data-centric Web services are services whose behavior is determined by their interactions with a repository of stored data. The lack of data specification in current Web service standards potentially leads to erroneous use of these services by their consumers. In this work, we propose using formal data contracts to decrease ambiguity about a service behavior, to fully verify a composition of services,...
To deliver 3-tier applications as a Service in the Cloud state-related constraints crossing Infrastructure- and Software as a Service boundaries need to be managed. By automating the lifecycle of applications like databases, load balancers, and web application servers rich SaaS business services can be provided in the Cloud. We propose an object oriented planning approach based on state constraints...
Software as a Service (SaaS) attracts small and medium enterprises by its low investment, flexibility and easy to manage. Migrating isolated tenancy hosted web application toward SaaS application can reuse the legacy software assets and cut down the re-development cost and risk. Since multi-tenant is a prime characteristic of SaaS, migrating to multi-tenancy is the prerequisite step of migrating to...
Real estate early warning system must be established rightly in the condition of rapid expanding for real estate market. This paper introduces how to construct real estate real estate information release platform, which is based on system architecture of ArcGIS server, a distributed WebGIS application development kit. Mechanism of geospatial data sharing is focused on web services, which is based...
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