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With the requirement of measurement and the development of electronic technology, the index of distortion measurement technique has a larger increase. How to improve the measurement accuracy and extend the frequency domain is becoming more and more important. The current method of sine waveform distortion measurement is reviewed and the total distortion measurement technique for the sine waveform,...
For the defects testing of civil aviation aircraft maintenance, an extraction algorithm of corrosion feature based on fractional dimension of fractal is proposed. Firstly, the ration denotation method of corrosion phenomena in fractal dimension is studied, and then distance vectors between the boundary and the centroid are ascertained by fractal feature of corrosion region's contour and the vectors...
Data publishing has generated much concern on individual privacy. Recent work has focused on different background knowledge and their various threats to the privacy of published data. However, there still exist a few types of adversary knowledge waiting to be investigated. In this paper, I explain my research on privacy-preserving data publishing (PPDP) by using full functional dependencies (FFDs)...
As the increasing amount of data is collected in mobile wireless networks for emerging pervasive applications, data-centric storage provides energy-efficient data dissemination and organization. One of the approaches in data-centric storage is that the nodes that collected data will transfer their data to other neighboring nodes that store the similar type of data. However, when the nodes are mobile,...
Orthogonal experimental design, an effective method of multi-factors researches, is capable of reducing the times of experiments, determining the sequence of priority of influencing factors rapidly and figuring out the best parameters and confidence degree. The novel characteristic of this paper is to apply the orthogonal experimental design into the evaluation research of image processing algorithms...
FH communication technology has the excellent anti-jamming performance and the ability of multi-access network, which is widely used in military and civilian mobile communications. The design of FH sequences is a key technology in FH communication systems. This paper designs a method to produce FH sequences based on RS(L,2) code, and does the wide interval treatment to the sequences by dual sub-bands...
This paper aims to investigate correlation mechanism among functional process variables (FPVs) for condition monitoring in chemical-mechanical planarization (CMP). During wafer polishing, critical process variables such as coefficient of friction and pad temperature vary with time and present in the shape of functional curves. Our previous work has demonstrated that correlation patterns among these...
Aimed at the application of PLC (power line communication), this paper proposed a improved OFDM synchronization scheme on the base of the compare with three ordinary OFDM synchronization algorithms, which are ML algorithm, 802.11a synchronization scheme and the method presented by Schmidl and Cox. Assuring the efficient timing synchronization and the wide frequency estimation, this modified method...
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