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In this paper, the application of independent component analysis (ICA) to statistical process monitoring is studied. This paper mainly focuses on studying on the fault detection and isolation principle based on the data model of ICA. Contributions of this paper are: (1) for the purpose of fault detection, two monitoring statistics are designated by detailed analysis on the data model of ICA; (2) a...
This paper analyses the common functions of current 1553B bus monitor and control system after the brief instruction of 1553B bus communication. In order to making up the lack of simulation function, we proposed a new 1553B bus monitor and control system which can simulate most communication behaviors. The new system manages data by using XML and the class named CTreeCtrl provided by MFC. This system...
Selecting satisfactory web service instances from massive providers is significant and also challenging, since multiple factors, snch as end users' qnality requirements and preferences, need to be considered in the selecting process. To partially address this issue, this paper introduces a sophisticated neb portal, which is designed for visualizing and exploring the service qnality of global OGC Web...
The ideal multifunctional smart grid electricity use monitor must be able to receive data from substations via a communication network and then process the information. To achieve this goal efficiently, a LabVIEW program has been written to analyse the received data and present it graphically for users. The research outcomes of this paper include an optimised technical design of a smart grid electricity...
Reactive power is an essential part of the power compared with active power. It is used to establish and sustain the magnetic field present in electrical equipment possessive of coils, such as transformers and electric machines. The reactive power consumption in large distribution networks can result in a huge reactive power flow, rising line current and a sub-nominal voltage. To avoid these negative...
Nowadays, the electrical power networks around the world are being faced with new challenges and problems and most of them were designed and built about fifty years ago. They thus cannot meet the requirements of the rapid development of modern society, e.g. the increase of electrical power consumption, strict specifications of power quality and stability. Meanwhile, an increasing number of countries...
IGBT power module field reliability prediction methods are continuously being developed to increase availability and reduce system downtime. This paper presents a precursor parameter in-situ monitoring methodology for health diagnosis and lifetime estimation with a focus on wire bond interconnections. The bond wire degradation is typically an end-of-life phenomenon and indicates an impending final...
With the more uncertainty of the internal and external environment, the enterprises are aware of the importance of the risk early-warning management. However, currently, the development of the risk early-warning management system of enterprises in China is relative laggard. Based on this background, this article builds integrated risk early-warning system the enterprise risk management system. The...
Considering numerous of credible problems takes place in the distributed, loosely coupled, flexible and dynamic Web service environment because many factors, such as service provider, service user and service quality and so on, is uncertain, which all these problems exited lead the normal running of system to face serious threats. Therefore, this article, through processing the user feedback information...
Much attentions is paid to the toxic side-effect of herbicides on non-target organisms and environmental safety. Nematodes have been considered as an important indicator and widely used in toxicity testing, due to requiring little space, having short life cycles, simple reproduction and being relatively easy manipulated and maintained in laboratory cultures. In our study, the herbicide acetochlor...
Circular random variables arise from a variety of sources in our daily lives, for example the wind directions. The ordinary linear circular regression is the simple profile, but it occurs frequently, particularly in calibration problems. An F control chart is proposed for monitoring the parameters of the linear circular-circular profile simultaneously in Phase II, and a control scheme is developed...
Internet's continual and rapid evolvement in scope and complexity impedes our understanding on it. Considering the data variety caused by user behaviors, and locations of geography or the Internet, studying own trace is an effective method of learning the Internet. To this end, we have conducted traffic measurements at our campus, and study the captured traces. Several analysis results are presented...
This article proposes a CUSUM chart, called the R-CUSUM chart, for the monitoring of a negative event. This chart is developed using a Markov model. It is able to check both the time interval (T) between occurrences of the event and the size (C) of each occurrence. Our studies show that the R-CUSUM chart is more effective than the existing R (=C/T) chart for event monitoring. The improvement in performance...
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