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Circuit breaker failure protection (CBFP) is a widely used back-up protection in electrical power system. To avoid maloperation, the CBFP needs a long delay to confirm the status of the circuit breaker, which means the cut off time will be long, sometimes too long to keep the stability of the power system. Therefore, it is very important to propose an optimized method to calculate the CBFP delay time...
This paper proposes an adaptive backstepping controller for the voice coil motor(VCM) in the present of parameter uncertainties. Based on the mathematical model of the VCM, the design procedure is divided into three parts, namely the position loop, angular velocity loop and the current loop, the dynamic surface control is utilized to remove the explosion feature in backstepping caused by the needed...
We devote ourselves to research effect of dispersion in beliefs on stock excess returns about active mutual funds in China. We propose a measurement of dispersion in that what fund managers think about expected stock performance based on their active holdings, i.e., deviations from benchmarks. We draw the conclusion that both the level of and the change in dispersion positively predict subsequent...
This paper introduced mobile communication technology in the field of industrial control, designed and implemented an equipment monitoring system based on the platform of mobile terminal. Which aims to convenient monitoring the running state of equipment in real-time, reduce the failure rate of running equipment and maintenance the running equipment operation timely. The system can monitor the running...
Today, as more and more businesses and individuals into the study of cloud computing, data storage in the cloud platform is also growing. So how cloud environment quickly and effectively store, manage and use these data has become a very important and challenging issues. This paper mainly discusses the storage model based on Map/Reduce text categorization, at the same time combining forecasting data...
A new reactive power optimization model involved the probability of voltage violation (PVV) and power losses to resolve the stochastic impact of wind power injection on voltage regulation. The derivation of PVV is given and applied to a variable-speed constant-frequency (VSCF) wind turbine firstly which is calculated by combining the probability of wind farm power output and the relationship between...
Due to the unpredictability of continuous data in distributed applications, it is hard for system to deal with data explosion in limited time. As a result, traditional static data storage technology fails to meet the demands for real-time data processing. To improve processing ability, many parallel processing structures are proposed, which brings up the problem that how the parallel machines can...
The modern maritime education needs to develop all kinds of simulator software. Marine VHF radio simulator is one of them. How to rapid development of such software engineering standardization projects? In this paper, using software engineering principle, Use all kinds software engineering diagrams, described the needs analysis, functional design, programming, system testing throughout the development...
Protocol analysis is very important for engineers for developing a complicate communication system, or for network administrators for supervision and fault diagnosis. Although several commercial protocol analyzers are available in the markets, they are too expensive or difficult to be altered to fit in with the needs of new protocols. In this paper, we present a protocol analysis platform based on...
This paper analyzes characteristics of the wide area protect communication system structure, and divides communication systems into the system protection center, backbone network, and regional communications systems. And regional communication system is divided into regional protection centers, regional networks and sub-station system. Then This paper analyzes the reliability of the fiber optic ring...
The primary goal of this research is dynamics modeling and analysis of spatial parallel manipulator with flexible links. A new model of spatial finite element beam model is proposed. The kinematic constraint conditions of the moving platform and the branches of the spatial flexible parallel manipulator are derived. The dynamic model of the moving platform is developed based on the Newton-Euler principle...
In this paper, we discuss security issues of the current SSL/TLS protocol and pay attention to the security vulnerabilities of the expansion of SSL/TLS protocol based on the TPM (Trusted Platform Module). We experiment on one attacking technique that can damage the security of SSL/TLS protocol successfully. Finally, considering the application environment of SSL/TLS protocol, we propose a specific...
Pipeline network is an important component of the telecommunications system, effective management of pipeline networks, pipeline networks and equipment to ensure safety and efficient utilization of a basic work. The network GPS inspection data collection system was designed based on unistrong expansion product in this paper. the advantages of the system was analyzed based on briefly described the...
Quality-of-service (QoS) in Web services encompasses various non-functional issues such as performance, dependability and security, etc. As more and more Web services become available, QoS capability is becoming a decisive factor to distinguishing services. The management of QoS metrics directly impacts the success of services participating in workflow-based applications. Therefore, when services...
Automatic design of cipher algorithm is an ideal destination of cryptographists, but how to guarantee automatic cipher safe enough to be used in real application and designing time less enough to fit practical requirement are key problems. We first combine evolution computation and programmable chip to study cipher automatic design and hardware resource reconfiguration. We have studied main attacks...
CO Diffusion in main power house is a major influencing factor on construction management. Under forced ventilation, the CO diffusion of construction is investigated using a 3D high Reynolds number k - epsiv model. The wall roughness is considered in the wall function. Ventilation on the third layer of main power house of Xiangjiaba hydropower station with complex geometry is used as a case. The geometric...
Continuous quality-of-service (QoS) provisioning is becoming increasingly important in the software development lifecycle of distributed systems. For component-based software, it also requires understanding of extra-functional properties of each individual component. However, black-box components, as most commonly provided by current component models, do not provide sufficient details to predict QoS...
TMT (Top Management Team, TMT) refers to the relatively small team of top executives with overall responsibility for the organization The group effectiveness of TMT is becoming more and more important while facing the complicated and fast changeable management environment. This paper gave analysis and summarization of the researches on TMT, and then presented a multi-agent model to study the relationship...
As a new service industry, the creative industry has special productive elements, unstable organization pattern, particular rules and specific environmental conditions on its innovation and development. Up to now, research in this field is in the exploring stage. With the theory of ecology, this paper first described the different patterns of innovation communities in creative industry based on multiple...
Digital creative industry has special productive elements, unstable organization pattern and peculiar developing environment. With the theory of ecology, this paper studied the mechanism of communitypsilas formation and evolution in digital creative industry. Linking to the current situation of Shanghai, one of the most developed city with creative industries in China, it give a concrete analysis...
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