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Despite the great benefits of cloud computing on businesses, some organizations have had to withdraw from its service due to incomplete compliance to conditions from standards, bodies, or Service Level Agreements which have led to their being penalized. A structured and efficient model is helpful to aid small and medium scale enterprises (SMSEs) utilize cloud services safely and ascertain their fitting...
For modelling hybrid systems, we have extended Event B based on its framework with the differential event. The differential event describes continuous behaviors of hybrid systems by differential equations and evolution constraint, whose proof obligations provide dynamical properties of a model. In order to ensure the safety and reliability of a model, proof obligations should be proved. It is difficult...
Modeling and Analysis of Real-Time and Embedded systems (MARTE) is a profile of United Modeling Language (UML), which provides support for specification, design and verification for Real-Time Embedded Systems (RTES). MARTE sequence diagram can deal with both discrete and dense time in which a clock can be either chronometric or logical. However it lacks the ability to describe the continuous behavior...
Maneuvering target tracking is very important in visual surveillance systems. However, as a popular algorithm, the standard interactive multiple model (IMM) filter has imprecise estimation and computerized intractability. To solve the problems, an improved IMM filter is proposed in this work. First, the Kalman filter (KF) and the unscented Kalman filter (UKF) are employed to estimate the non-maneuvering...
In component-based architecture, a component is a unit of computation or a data store. Connectors are architectural building blocks used to model interactions among components. However, in some particular complex real-time systems, it is non-determinate and confused to distinguish some modules functioning as components as well as connectors. Therefore, a unified model method is demanded to describe...
In the Internet, there are a mass of malicious, fraudulent services in addition to the dynamics change and differences in service of quality. As a result, it is difficult for a client to fastly get high- quality services. In this paper, a service-composition framework based on the trust evolution and alliance has been proposed. It is different from traditional service workflow model. The trust relationship...
In this paper, presented the cause of blocking artifacts and the importance of deblocking artifacts, while explained deblocking artifacts principle. Based on H.264 /AVC standard, the judgement of boundary strength (BS) is specially studied, and proposed an efficient arithmetic for deblocking filter. This efficient arithmetic can improve decoder speed and quality, and shorten about 10% of total time.
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