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Drivers who exceed the speed limit and cut in aggressively are the majority in China. Their behaviors inevitably send other drivers into an execution cycle of irrational braking frequently in the complex traffic flow. So the main cause of severe traffic accidents and great casualties is Chinese drivers' raking behaviors. In this paper, Neural Network model of driver's braking behavior characteristics...
The direct-driven permanent magnet synchronous wind power system has high mechanical oscillation, when the generator is controlled to maximize the efficiency of captured wind energy. To solve these problems, the wind speed is distributed to low frequency and high frequency parts, and it is based on multi-time scale of wind speed and frequency separation principle. The low frequency part of the system...
In this paper a fault tolerant state estimation (FTSE) framework is developed for reliable navigation. The framework features kinematic state estimation using Bayesian filtering of sensor measurements, and sensor fault detection and isolation. Another development is an uncoupled fusion architecture that allows the system state to be updated by asynchronous sensors, makes the system easily scalable...
In this paper, a closed-form expression for Bit Error rate (BER) of a Multiple-Input Multiple-Output (MIMO) system employing the Minimum Mean Square Error MMSE channel estimation method is derived. The numerical results show that when the Channel State Information (CSI) is free of estimation errors BER decreases when the number of receive antennas increases. However under imperfect CSI, BER is getting...
This paper investigates a Slotted ALOHA protocol for a multi-user wireless system operating under partial Line of Sight (LOS) conditions in which both the base station and mobile users are equipped with multiple element antennas. The investigations focus on how physical layer parameters such as spatial correlation, mutual coupling and Rician factor K affect the system capacity. Probability model for...
Degradation of electrical characteristics of NdAlO3/SiO2 stack gate under the constant voltage stress (CVS) is presented. It is found that the electron trapping, positive charges and oxide trap generation acts together, which causes the degradation of NdAlO3/SiO2 stack gate. The transport mechanisms of the gate leakage current in NdAlO3/SiO2 stack gate are also investigated. Frenkel-Poole emission...
Experimental study on composition design of asphalt mixtures was conducted based on the study of asphalt material test. Gradation composition design of high-performance asphalt mixtures was posed in this paper. Further more, fatigue properties of high-performance asphalt mixtures were researched using simulates heavy traffic with high stress ratio. It is shown that fatigue regulation under heavy traffic...
In this paper, an expert experience based Electrocardiogram (ECG) classification method using domain knowledge and morphology information is presented. Firstly, the process of ECG interpretation by physicians is analyzed. Then, the construction method of classification model based on Support Vector Machine (SVM) is discussed and morphology information extraction approach through Principal Component...
The visual analysis of human motion have become a direction of the leading edge of concern in computer vision. The problem of recognizing human actions in video have proven to be a difficult challenge for computer vision. A common trend is to combine shape and motion feature in Bag-of-word (BoW) framework. The BoW framework needs read the whole video for once recognition. It could not be applicable...
Health care delivery teams are increasingly adopting healthcare information systems (HCIS) to improve the efficiency and quality of care. Methods for assessing candidate HCIS exist, but are inadequate. Enhanced approaches to HCIS assessment are needed which focus on quality of care goals and compliance with accreditation standards. Performance indicators are often used to measure how well goals are...
Unmanned Underwater Vehicle (UUV) self-generated noise is the primary factor that affects the performance of passive flank array in the detection of weak signal, which is a complex mechanism and physics process, demonstrated broadband, colored spectral property in frequency and spatial domain. In practice, adaptive noise cancellation (ANC) is usually used. Since the colored distribution of self-generated...
This paper reports the performance of Block Diagonalization (BD) scheme for different array antenna structures used in a multiuser Multiple Input Multiple Output (MIMO) system. The assessment is performed in terms of sum rate capacity. Theoretical analysis as well as computer simulations shows that the spatial correlation downgrades downlink performance of BD. The simulations also reveal that the...
Urban thermal environment is a complicated nonlinear system, which is affected by the integration of various influencing factors inside the city. To explore the mechanism of urban heat island (UHI) effect formation in the city of Shanghai, China, decision tree is applied to establishing the quantitative relationships between urban thermal environment and its influencing factors, which reflect ecological...
Pulsed eddy current (PEC) detection technology has gained attention in the research and development of the non-destructive testing (NDT). In contrast to the conventional eddy current testing method, the PEC detection technology uses pulsed excitation that is characterized by the richness of frequency. So when the inner corrosion of the low-carbon steel pipeline is detected by the PEC technology, the...
The biometric template, which is stored in the form of raw data, has become the greatest potential threat to the security of biometric authentication system. As the compromise of the biometric data is permanent, the protection of biometric data is particularly important. Consequently, biometric template protection technologies have aroused research highlights recently. One of the most popular template...
This paper mainly studies computer automatic measurement of cashmere diameter, and the method of cashmere fiber. Simulation experiment is carried out under the simulation environment of Matlab7.0 and the processing scheme which is suitable for the fiber images is confirmed, and finally, on the basis of the images after pre-processed, automatic measurement of cashmere diameter is achieved by the arithmetic...
According to the different features between chaotic signals and noise, a new noise reduction method is proposed based on wavelet modulus maximum. First, the discrete wavelet transform of chaotic signals is given in this method, then the approximate parts are handled by the singular spectrum analysis in order to lower the containing noise; For the detail parts after the wavelet modulus maximum treatment,...
Rice is a whole grain finding applications in gourmet foods due to its nutritional value and unique taste. For food nurtrition and health concerns, the genotype of health benefits of whole grain consumption after storage should be comfirmed. However, little is known about its antioxidant properties and phytochemical components following storage. The objectives of this study were to evaluate totle...
This paper presents a fast background estimation method for vehicle surveillance based on multi-resolution analysis (MRA) and block updating strategy. Firstly, an approximate expression of original image is achieved by (MRA) and the feature difference is calculated along adjacent frames to divide the foreground and background; Secondly, the isolated pixels are removed by morphologic operation; and...
A bacterial strain (AD4) capable of utiliaing atrazine as a sole nitrogen source for growth was isolated from industrial wastewater by enrichment culture. By Rep-PCR analysis revealed that strain AD4 was different with ADP and TC1, which are the model atrazine-degrading strain. The capable of removing atrazine of AD4 was greater than ADP and TC1. AD4 strain offered a great potential in the bioremediation...
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