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Base on the Landsat TM/ETM+ data on August of 2001 and 2010, the surface urban heat island (SUHI) intensity on prevailing wind direction belt using three sampling belts with 1 km width within the third circle freeway of Shenyang were calculated, and its relationships with land use types, source-sink distribution, normal differential vegetation index (NDVI), normal differential built-up index (NDBI),...
Monitoring traffics between applictions deployed in a distributed computing system (DCS) can help analyzers perceive the dynamic load of each application, and detect the anomalies in all the running processes. However, due to the factors of high dimension and strong periodicity, the traffic data is difficult to visualize and interpret. In this paper, we propose a traffic monitoring approach based...
The paper presents an on-line brain-computer interface (BCI) based on visual evoked potential (VEP) P300. The BCI is applied to control a multi-DOF manipulator. This BCI system includes five modules which are visual stimulator, signal acquisition, data processing, communication and motion control of manipulator. Stimulation program and experimental scheme are designed based on LabVIEW platform and...
Supply chain integration nowadays is considered as an important approach to building and sustaining advantages. Many previous empirical researches focus on the effect of supply chain integration on the firms' performance, yet, the antecedence of supply chain integration is still largely unknown. This paper investigates the relationship between environmental uncertainty (including demand uncertainty,...
This study aims to confirm the relationship between the cognitive processes and frequency of alpha rhythm. Alpha frequencies were calculated based on two events: eyes close and eyes close calculating. These results were then analyzed to find their change. The frequency of alpha rhythm becomes high from eyes close only condition to eyes close calculating. The cognitive processes lead to the increase...
When rotor rubbing acoustic emission(AE) signal propagates in the complex structure, multi-mode waves have different propagate speeds and signals are distorted seriously because of the complexity of the revolving mechanical structure. The accurate AE source location could not be gotten using traditional time-delay estimation. On the basis of inversely attenuation between propagation energy and source...
Digital watermarking is an efficient and promising approach to protect intellectual property rights of digital media. In this paper, a new scheme of robust audio watermarking based on Fractional Fourier transform (FRFT) domain for copyright protection is proposed, which utilizes the idea that FRFT can be considered as a rotation in time-frequency joint domain. Test results for imperceptibility of...
A method of using two-class classifiers in emotion recognition was discussed. Emotion classes were divided into pairs for improved feature selection and optimization. Each pair of emotions was classified by a two-class classifier and the final recognition result was reached by a correlation decoder. Compared with n-class classifier, using two-class classifiers for each pair of emotions is more suitable...
When locating the rub-impact source of rotating machines by acoustic emission technology, precise time-difference of arrival is always not available to calculate the faults location due to the deteriorated signal correlation relationship among different sensors. This is caused by both the dispersion phenomenon since the acoustic emission signal includes various waveform modes while each type of waveform...
Stereo video technology is an active research area in current video signal processing filed. More and more researchers are engaged in this field. Based on the Joint Multiview Video Model proposed by JVT (Joint Video Team), three existing stereo video coding schemes are studied in this paper. An improved scheme is proposed after the stereo video MacroBlock types are analyzed. The experimental results...
It is difficult to recognise acoustic emission (AE) signal because of serious pollution by noise. Fractal dimension is a new method to describe the characteristics of AE signal. According to the complex computation and low precision of box counting dimension, correlation dimension and Katz dimension, an algorithm of logarithmic fractal dimension based on waveform length was proposed in this paper...
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