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Aiming at the fault diagnosis of rolling bearing in the case of complicated background, lifting morphological wavelet is used to denoise, and a method for extracting fault features is represented by combining lifting morphological wavelet with ensemble empirical mode decomposition (EEMD). The original signal is denoised firstly by max-lifting morphological wavelet and min-lifting morphological wavelet...
How to support the group argument is quite an important study of HWME research. An approach of expert opinion acquisition based on cloud model and evidence theory is proposed, with respect to the characteristic of group argument. According to the semantic relations between comments, this method uses cloud model to find out the opinion implicated in the comment, and synthesizes the implicated opinions...
Service can enhance the competitive edge of enterprises, but it also consumes resources. Overly concerned with the service, companies are likely to fall into the "prisoner's dilemma of service", thereby it will finally reduce social welfare. Based on the unlimited service problem companies encountered in service management, this paper builds a model called prisoner's dilemma of service,...
Rapid advances in the enabling technologies for mobile and ubiquitous computing help portable devices to join collaborative graphics design conveniently. The limitation of display size and computational power of these embedded devices makes it hard for mobile users to browse large pattern that renewed in real time efficiently. We present a novel user interest region prediction algorithm and related...
In a multi-user cellular network, the sum-rate capacity of a single-input single-output (SISO) downlink over flat Rayleigh fading channels asymptotically decreases to zero while the feedback threshold is large enough when Outage-Accepted Scheduling (OAS) is employed. In this paper, we consider a selective feedback scheduling and present an improved OAS where the sum-rate capacity will be promoted...
Masquerader is someone who impersonates another user and operates computer system with privileged access. It's difficult to detect out by conventional techniques as firewall or misuse-based intrusion detection. Anomaly detection has been considered as a promising approach for masquerade detection, which is based on the idea that significant departures from normal behavior could be considered due to...
In this paper, we study a signal processing problem which concentrates on outlier detection and data mining in order to rediscover some useful information. Moreover, the great difficulty of the subject is caused by both the external environment and the internal mechanism. In the external, owing to limit of impersonal condition, such as, realistic disturbance from noise signal can not avoid. In the...
People often try to smooth or eliminate load outliers all together in traditional power load forecasting. This, however, could result in the loss of important hidden information. In other words, the power load outliers themselves may be particular important. Hence there is a beforehand estimate to change and characteristic of power load, especially in power load outliers or peak load, is a precondition...
A Large-cale, interconnected, discree-time system is considered. The system consists of an uncontrolled main subsystem which communicates directly with N local subsystems all of which have inputs. There is no direct communication from one local subsystem to another. Futhermore, it is assumed that there are uncertain parameters involved in all the subsystems. The treated problem is to design state...
The problem of reducing sensitivity or linear time-invariant systems to parameter variations and small time-delay. based on both pole placement and optimal control [3], is considered. An efficient computational procedure based on direct cost optimization using a gradient type algorithm is also reported.
A large scale interconnected discrete-time system possessing a multi-time-scale property is considered. It is assumed the lower level subsystems are faster than the one above. A near-optimal solution is found using the results of singular perturbation theory.
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