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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)
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)
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)
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)
Software cybernetics makes better use of the interplay between control theory and software engineering. A cybernetics method called self-evolving control is proposed to guarantee the behaviors’ reliability of software systems at runtime. This method adopts software sensors to monitor the behaviors of runtime system, and achieves self-evolving based on(More)
A two-dimensional (2D) water quality model was established to determine the response of water quality variables and submerged aquatic vegetation biomass to load reduction from watershed inflows and enclosure aquaculture in Honghu Lake in China. Results showed that the total nitrogen (TN) and total phosphorus (TP) loads from upstream discharge were the major(More)
High tibial osteotomy (HTO) has been widely used for clinical treatment of osteoarthritis of the medial compartment of the knee, and both opening-wedge and closing-wedge HTO are the most commonly used methods. However, it remains unclear which technique has better clinical and radiological outcomes in practice. To systematically evaluate this issue, we(More)