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With the increase of the popularity of Web service, more and more Web applications are developed with this new kind of components. Web service quality validation and control is becoming very critical to vendors, brokers and application builders. Both brokers and users usually have to use black-box testing because design and implementation details of Web(More)
Researching on chaos-based image encryption scheme is becoming increasingly popular; unfortunately, most of the algorithms proposed provide poor security because of their failure to resist attack. A new digital image encryption scheme based on variable parameters double logistic systems is presented. The subkey sequences are generated after optimizing and(More)
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(More)
Hydrologic regime plays a major role in structuring biotic diversity within river ecosystems by controlling key habitat conditions within the river channel and floodplain. Daily flow records from seven hydrological stations and the range of variability approach were utilized to investigate the variability and spatial pattern of the hydrologic alterations(More)
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(More)
Collaborative virtual environment (CVE) systems support many users to share a virtual world and to do collaborative work and multiple-server architectures are widely used in which multiple servers are deployed and each server handles a partition of the virtual world. One of the key issues in the design of scalable CVE systems based on the multiple-server(More)