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The high electromagnetic pulse (EMP) sensor using optical-fiber to transmit signal can restrain electromagnetic interference. The Compton electrons scattered by γ-ray irradiated from nuclear explosion or nuclear explosion simulator can generate EMP and γ-ray ,and γ-ray can penetrate the shielding box and irradiate the integrated circuit directly. The γ-ray irradiation effect includes interference,...
This paper proposes a recurrence qualification analysis (RQA) based method which is a useful tool to detect the subtle nonlinear changes in time series data to monitor the decreasing clamping forces of transformer iron cores. Firstly, suitable parameters including the distance threshold ?? for RQA are chosen according to the dynamical structures of the core vibration signals, and then the signals...
The estimation result of the initial rotor position for permanent magnet synchronous motor (SPMSM) maybe reverse with traditional pulsing high-frequency voltage signal injection method, since this method cannot recognize N/S rotor polarity. A new method was proposed to identify rotor initial position based on motor saliency image. N/S polarity was distinguished by analyzing the second high-frequency...
Data processing is important to the structure health monitoring system which produces large volumes of raw data containing the useful information and the noise. Wavelet analysis is a newly emerging theory in data processing field, which has good localization characteristics in both frequency and time domains compared to most traditional methods used for structural health monitoring. Wavelet can be...
Traditional Demand Side Management method failed to adjust to social development since the smart gird conception has been widely popularized. It's a right choice to realize the intelligent of demand side on the basis of Smart Grid strategy, which has agreat significance for the development of Smart Gird in the user side. This paper introduces the conception and difference between traditional Demand...
Design consultation, with the development of economic integration, globalization of industrial design, technology revolution in the world and social economy, has come into being and grown gradually, which has injected new energy for the innovation of products and the expansion of new markets. Meanwhile, designers' function and their means to create value have started to diversify, instead of the single...
Currently Long QT Syndrome (LQTS) is diagnosed by using the Long QT Syndrome “diagnostic score”. Calculation of the score is done by assigning different points to various criteria. The answers to the criteria are often hard to obtain as they require lengthy periods of cardiac observations. And even after the scores are obtain, only a percentage of certainty is obtained. Diagnosis of LQTS is often...
Presently, China coal mine enterprises are under merger and reorganization great environment. These enterprises merger and acquisition (M&A) process efficiency predictions lack theoretical support. The paper constructed coal enterprises M&A efficiency evaluation system, built the M&A efficiency prediction model based on support vector machine (SVM). The paper investigated the data in 2004-2008...
The paper constructed the data envelope analysis input and output index system of coal mine safety investment. Adopting the method to make the empirical analysis of a mining group safety investment efficiency, the results show: the group safety investment efficiency conforms to China coal industry regularity; 2005, it should reduce the number of workers, strengthen the safety management, at the same...
The nanosized Zn 0.6 Cu 0.4 Cr 0.5 Fe 1.46 Sm 0.04 O 4 (ZCCFS 0.04 O) ferrite doped with Sm was prepared by a rheological phase reaction method. These nanoparticles were further used as templates for the fabrication of polyaniline-linked ZCCFS 0.04 O and polypyrrole-linked ZCCFS 0.04 O nanocomposites via in situ polymerization...
Presently, China coal mine safety situation is grim. One of important reasons is inadequacy of the safety investment. Safety investment prediction can provide the decision basis for the effective control and guidance of safety investment. The paper analyzed the impact factors of the coal mine safety investment, built the prediction model of coal mine safety investment based on wavelet neural network...
Mine work face gas emission quantity is an important mine design basis, which also has important practical significance for guide mine design, ventilation and safety production. Mine gas emission quantity and work face multi factors have complex non-linear relationship. The paper built the work face gas emission prediction support vector machine (SVM) model. Based on data statistic of a mine work...
The observation of turbulence exchange in atmospheric boundary layer and aerodynamic parameters in near surface layer has been one of the important fields in environment meteorological investigation, and the same time, it always has been an key parameter in the investigation of the particle diffusion concentration. In this paper, the field campaign was carried out in a port district and main metrological...
Presently, China’s coal enterprises are in a merger and acquisition (M&A) phase environment. The coal enterprises M&A risk prediction research is less, and lacks corresponding theory support. The paper built the coal enterprises M&A risk evaluation system, constructed the risk prediction model based on support vector machine (SVM), and collected related 13 coal enterprises data during...
This paper presents a driving fatigue monitoring method with machine vision algorithm, which is based on computing complexity. And a DSP system based on this method is also introduced. In this method, we firstly binarizated image which contains driver's facial information, to distinguish face area from background.. Then the binarizated luminance components is horizontally and vertically accumulated...
It is widely regarded that evaluation is a complex systematic project, which involving many aspects of the process in technological innovation, epically for the pharmaceutical sector. Based on 18 original-designing indicators and the Factor analysis, the paper evaluates the stage differences of continuous innovation abilities in Chinese hinterland provinces' biotechnology industry. And then it originally...
The LDPC can provide multiple rates without employing more parity check matrices through the using of Rate Compatible strategy, in which the idea of puncturing is used to get codes at higher rates. This paper mainly focused on Blocktype LDPC, for which three different puncturing algorithms are shown. One is the original scheme of puncturing based on the recovery step. Another one is proposed by directly...
Compensation arithmetic based on system identification was brought out. Via getting the standard import signal and distortion export signal through the standard calibration device of electrostatic high-voltage potential, the time domain mathematic model and waveform compensation have been studied by system identification arithmetic. Transfer function model was identified by the least square method...
This study explored the feasibility of building robust surface electromyography (EMG)-based gesture interfaces starting from the definition of input command gestures. As a first step, an offline experimental scheme was carried out for extracting user-independent input command sets with high class separability, reliability and low individual variations from 23 classes of hand gestures. Then three types...
This paper investigates the roles of a three-axis accelerometer, surface electromyography sensors and a webcam for dynamic gesture recognition. A decision-level multiple sensor fusion method based on action elements is proposed to distinguish a set of 20 kinds of dynamic hand gestures. Experiments are designed and conducted to collect three kinds of sensor data stream simultaneously during gesture...
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