bluuebunny/crossref_metadata_2025 huggingface dataset:
Research and Design of Light Moisture Tester
Authors: Tang Ya Ping
Published: July 2014

This paper introduces the research and design of a light moisture tester. In the coal quality analysis field, moisture test most of the use of infrared heating pipe heating or drying box to measure, low heating rates, nitrogen through a single mode, before heating furnace uniform nitrogen filled with test conditions and have the test conditions, the same way caused by nitrogen, nitrogen waste. Based on this study, the heating pipe comprises an infrared tube into a light tube, the heating rate is improved; the general nitrogen control size flow switching mode using 2.5min before the experiment, large flow quick heating furnace filled with nitrogen, achieved through experimental conditions drying nitrogen, open a small flow, keep the atmosphere. The improved design of a light moisture meter analysis of water air drying method precision test, analysis of water air drying method accuracy experiments, 6 water - air drying method of precision experiment, 6 water - air drying method accuracy experiments, analysis of water through nitrogen drying method precision experiment, analysis of water. Nitrogen drying method accuracy experiments, ¢ 6 full water through nitrogen drying method precision experiment, ¢ 6 full water through nitrogen drying method accuracy experiments, results in line with national standard test, repeatability.
Dielectric Barrier Discharge Plasma Reduced Pt Catalysts Supported on Activated Carbon and their Electrocatalytic Activity
Authors: Di Lan Bo
Published: July 2014

Atmospheric-pressure dielectric barrier discharge (DBD) plasma was used to fabricate Pt/C electrocatalysts. The influences of the pretreatment of the activated carbon support and the preparing method on the properties of the Pt/C electrocatalysts were investigated. The composition of the Pt/C samples was characterized by X-ray diffraction (XRD). The electrocatalytic activity of the Pt/C samples was evaluating by measuring the cyclic voltammograms. The results showed that higher dispersion of Pt nanoparticles was obtained on the activated carbon support pretreated by HNO3, and higher reduction rate of Pt ions was obtained in Pt/C prepared by DBD plasma. As a consequence, the Pt/C samples with the activated carbon support pre-oxidized by HNO3and reduced by DBD plasma exhibited the highest electrocatalytic activity.
Study of Maximum Power Point Tracking Control Based on GRNN Neural Network
Authors: Liu Kun , Ji Tong Zhou , Li Xian Yun , He Xiong Feng , Zhang Mei
Published: July 2014

detailed analysis of mathematical model, expounded maximum power point tracking (MPPT) control principle, then a improved constant voltage tracking of maximum power point tracking control based on GRNN neural network is proposed, this control strategy uses predicted voltage of GRNN neural network to instead of constant voltage, has be simulated in Matlab /Simulink, and result is this MPPT method can be more accurate compared to traditional control strategy.
A Platform of Lightning Protection Business Based on Tablet-PC
Authors: Zhang Yan Hua , Zhou Jun Chi , Jiao Xue , Zhou Jing , Zeng Qing Feng
Published: July 2014

As a most grievous meteorological disaster in the world, lighting calamity is destructive and could be inducement of fire explosion accidents. Lightning protection business mainly consists of lightning protection devices (LPD) inspection, lightning disasters authentication and lightning risk evaluation, for which on-site data gathering is indispensible, and the status in quo has common defects. Based on tablet-PC and mobile information technology, we developed a platform including such seven modules as system configuration, LPD inspection of existing buildings, LPD inspection of under-construction buildings, identification of lightning disasters, lightning risk assessment, location of inspected clients and location of inspectors. Mobil GIS technology and fast-developing method of forms were taken into use as key technologies. With its help, an promotion of facilitation, standardization and intellectualization of lightning protection business is achieved.
Preparation of Au/P25 Catalysts for Removal of CO by Dielectric Barrier Discharge Plasma
Authors: Di Lan Bo
Published: July 2014

Atmospheric-pressure dielectric barrier discharge (DBD) cold plasma was used to prepare high performance Au/P25 catalysts (Au/P25-P). XRD and UV-Vis DRS spectra for Au/P25 catalysts were performed. The results indicated that the size of Au nanoparticles in Au/P25-P was smaller than that prepared by conventional thermal impregnation method (Au/P25-H). The temperature-dependent CO oxidation was performed to investigate the activity of Au/P25 catalysts. Au/P25-P gave excellent catalytic activity for CO oxidation than that of Au/P25-H. This may be attributed to the smaller size of Au nanoparticles in Au/P25-P.
A Production Planning and Scheduling Process Study Based on Dynamic Information Feedback
Authors: Yang Qing , Ni Yan Hua
Published: July 2014

Many factories usually can’t use the production scheduling plan generated by some software directly, such as ERP and MES. Two main reasons are founded, one is the fixed parameter and data used in the planning and scheduling process; the other one is lack of Ability to respond to the dynamic production environment. This paper tries to improve the plan by using the dynamic information feedback and experience from workers, and a test states it is helpful in the daily work.
Feedforward Improved PID Algorithm to Control the Smart Car
Authors: Xie Ying Hui , Liu Xiao Qiu
Published: July 2014

In the self-designed smart car, to control the speed and direction is the control core of the intelligent vehicle system . Due to hardware limitations, there is a delay in the smart car speed and direction control, which is adversely affected for the control of the smart car . For the above problems, the intelligent vehicle control will be applied by the feedforward and feedback control methods, the disturbance which is caused by the deviation will be treated in advance, Digital PID algorithm is improved , the incomplete differential and differential current algorithm is introduced to the PID algorithm to improve the dynamic performance of the system. Aftet this new algorithm is adopted, the dynamic performance of the intelligent vehicle system has been greatly improved.
Based on 3-D Modeling and Value Simulation of the Intake System in CNG
Authors: Li Jing Hua , Li Jiang Jiang
Published: July 2014

The structure of the air intake system directly affect the combustion and heat load in each cylinder. In this paper, using the CFD experience can look the intake pipe gas flow as a 3-D compressed steady flow. It is easy to built a 3-D model grids with the help of GAMBIT software .Using the FLUENT soft software ,it is reasonable to get the the fluid velocity distribution in flow field , and calculate the fluid flowing quality at the exit of manifold, as well as analyze the inhomogeneity of the inlet air.
Mobile Wireless Communications Device with Buffered Cock Distribution Network
Authors: Jia Jing Pu , Wu Chuan Sheng , Chen Jian Wei , Shi Yun Qiu
Published: July 2014

The microprocessor generates many digital noises that find their way back from the clock reference input of the microprocessor to the reference clock lines with which the RF circuits are sharing. These digital noises are conductively coupled to the RF circuits, including any RF transceiver, Bluetooth module and other RF circuits, such as a local oscillator and phase locked loop circuits, to cause spurious signals and jitters in the circuits, which in turn, degrade the RF performance or cause a radio to fail certain specifications.
The Application of the Movement Video Analysis Technology in the Sports Area
Authors: Xiao Xiao
Published: July 2014

In this paper, the author starts from the literature reviews and the development and application of the video analysis technology software in the sports area, discussing the movement video collection, the processed and transformed digits from the computer software. Through the application of the first-line coaches and teachers in the sports teaching course, the athletes or students can see the technical action and tactical implementation effects, get the timely and accurate analysis information of which it will be beneficial to put the language style into the intuitive image, make the exchange for the coach or the students at the spot. In this way, the sports training and the teaching results will be greatly improved.
Sensing Matrix Setting in Cognitive Radio Networks
Authors: Chen Xing Zhi , Chen Bai Di
Published: July 2014

In this paper, the problem of maximizing the average throughput of a CRN through setting proper sensing sequences is investigated. In order to find the optimal sensing matrix, we obtain the spectrum sensing sequence. The structure of the proposed scheme is discussed in detail.
Review and Prospect on Tear Damage Research for High-Performance Flexible Fiber-Reinforced Composite Material
Authors: Cao Shuai , Liu Long Bin , Xiao Hou Di , Lv Ming Yun
Published: July 2014

Near space airship increasingly becomes a research hotspot with its inclusive potential military and civilian values. It is necessary to consider single and multiple-coupling space environment effects on evaluating envelope tearing damage mechanisms. The basic characteristics of the space environment and the complexity of tear damage mechanism are introduced, and this presentation also summarizes the research status of the tear damage mechanical mechanism and damage properties under the influence of the multiple space environment factors of high-performance airship envelope. Besides, the main existing problems and prospect in tear damage characterization under real working condition are discussed. The study provides some technical support for high-performance and protecting tearing damage design on airship envelope.
Study of Synchronization Strategy Based on Timestamp
Authors: Xu Li
Published: July 2014

Aiming at the characteristics of the traditional multichannel rendering synchronization strategy and the existing problems, the paper proposes a new multichannel rendering synchronization strategy based on timestamp and makes a horizontal comparison between the experimental results and the traditional strategies, as well as verifies the advantages on systematic stability and fault tolerance of network transmission. The strategy will be suitable for using in a clustered, massive and high reliable multichannel system.
Speech Enhancement Based on EMD and Wavelet Threshold in Noisy Environments
Authors: Chen Zi Qin , Zhang De Xiang , Yuan Da Ling
Published: July 2014

Speech enhancement is crucial for speech recognition accuracy. How to eliminate the effect of the noise constitutes a challenging problem in speech processing. This paper presents a new technique for speech enhancement in a noisy environment based on the empirical mode decomposition (EMD) algorithm and wavelet threshold. With the EMD, the noise speech signals can be decomposed into a sum of the band-limited function called intrinsic mode functions (IMFs), which is a zero-mean AM-FM component. Then wavelet threshold of the IMF components can be used to eliminate the effect of the noise for speech enhancement. Experimental results show that the proposed speech enhancement by de-noising algorithm is possible to achieve an excellent balance between suppresses noise effectively and preserves as many target characteristics of original signal as possible.
Research of Frequency-Hopping Communication for Arbitrary Array Based on Adaptive Beam-Forming
Authors: Qiao Cheng Lin , Quan Hou De , Cui Pei Zhang
Published: July 2014

Aiming at the problem of poor performance of suppressing the wide band jamming and fast following jamming in Frequency-Hopping (FH) communication system, a communication scheme by combination of the complementally transformed minimum variance with FH technique for arbitrary array (CTMV-FH) is proposed, based on the purpose to maximize the output Signal to Interference and Noise Ratio (SINR). Basic theory of CTMV is introduced. The algorithm is used to suppress the wide band jamming and fast following jamming. Simulation results show that the scheme can suppress the wide band jamming and fast following jamming effectively in FH communication system.
Parameter Estimation Based on Fractional Correlation under Alpha-Stable Distribution Noise Environment in Bistatic MIMO Radar System
Authors: Li Li
Published: July 2014

This paper takes the-stable distribution as the noise model and works on the parameter estimation problem of bistatic Multiple-Input Multiple-Output (MIMO) radar system in the impulsive noise environment.This paper presents a signal model and a novel method for parameter estimation in bistatic MIMO radar system in the impulsive noise environment. Firstly, a signal array model is constructed based on the-stable distribution model. Secondly, Doppler parameters are jointly estimated by searching the optimal rotation angle to meet concentrated-energy of the FLOS-FC. Furthermore, two algorithms are presented for the estimation of DODs and DOAs, including based on FLOS-MUSIC algorithm and FLOS-ESPRIT algorithm. Simulation results are presented to verity the effectiveness of the proposed method.
A Beam Forming Method Based on Amplitude Weighting of Uniform Circular Array
Authors: Wang Jin Lin , Fu Yong Qing , Liu Xue
Published: July 2014

The uniform circular planar array (UCA) has lots of advantages what linear arrays and other surface arrays don't have. However, because of its limitations, such as the high side-lobe level and low zero depth, the application on controlling array space direction by beam forming has been limited. Considering the characteristics of UCA, the receiving UCA's signal model is established in this paper. The influence factors of UCA's beam will be found out on the basis of theoretical derivation. A new method, that can improve the performance of the UCA beam directivity by amplitude weighting, is proposed in this paper. The theoretical derivation results and simulation results improved that the method could have a better ability in side-lobe suppression, and the new method could make the UCA to have a good application prospect.
Simulation Research on Rolling Element Bearing Fault Signal Extraction Based on Blind Source Separation
Authors: Zhang Yong Xiang , Zhu Jie Ping , Zhang Shuai
Published: July 2014

In order to extract the fault information from rolling element bearing, combined with Kurtosis criteria and Hessian matrix. An improved rolling element bearing fault signal extraction method is proposed. Kurtosis is the cost function. The method is according to the construction principles of blind source separation (BSS), and it uses an analytically derived Hessian matrix in the maximization process of the cost function used. Then the impact signal is extracted successfully. The effectiveness of the method is demonstrated on simulated signal.
An Improved Otsu Image Segmentation Algorithm
Authors: Dong Yan Xue
Published: July 2014

Otsu segmentation algorithm is one of the most successful algorithms in the field of image processing,However, it has drawbacks such as it is poor in dividing small object in images. This paper propose a improved Otsu algorithm based on weighted smooth histogram which can ensure the location of threshold point is more near to the valley point of the image and at the same time ensure the ensure between-class variance maximum.The results show that the improved Otsu algorithm can effectively accomplish segmentation for multimodal image, and get better segmentation results for images added Gaussian noise.
Radar Compressed Sensing Imaging Method with Two-Dimensional Separable Sampling
Authors: Jiao Shu Hong , Tang Lin , Liu Xue , Qi Huan
Published: July 2014

A radar compressed sensing imaging method with 2-D separable sampling is proposed in this paper. Instead of converting the radar imaging problem into two 1-D compressed sensing problem, we use the 2-D Separable Projections to solve it directly. Unlike the 2-D separable sampling in visible imaging, the range and azimuth which are the two dimensions of the radar imaging couple with each other. This Coupling increases the storage and computation in radar compressed imaging, therefore some de-coupling processing using in Range Doppler algorithm are adopted in the proposed method to construct the 2-D separable sampling data. Accordingly the two dimensional scene has been reconstructed with the proposed 2-D compressed sensing algorithms. Compared with conventional compressed sensing imaging methods, the new method has reduced the memory usage and complexity with imaging performance improvement.
Novel Infrared and Visible Images Fusion Algorithm Based on NSCT
Authors: Tan Hai Feng , Luo Tian Wen , Zhu Jing Jun , Li Guan Zhong , Zhang Quan Xi
Published: July 2014

A novel fusion algorithm based on Nonsubsampled Contourlet Transform (NSCT) is proposed, according to the characteristics of infrared and visible images. Firstly, the registered infrared and visible images from the same scene were transformed by NSCT transforms; then the low frequency coefficient is fused by the combination of local energy and normalised correlation matrix, the high frequency coefficient fusion is fused by regional energy matching with regional variance; finally, the target image is obtained by performing inverse NSCT transforms. experimental results indicate that the proposed algorithm can effectively get more detail information and the fusion performance is dramatically better than traditional fusion methods.
Application and Analysis of the Full-Wave Band CCD System in Image Interpretation Technology
Authors: Han Wei , Xie Jun , Bao Jin He , Zhao Mei , Fan Xiu Ying , Guo Fei
Published: July 2014

The full-wave band CCD system is widely used for military,civil or photography of criminal image and extraction analysis,its wavelength is range between 200 nm and 1200 nm,including ultraviolet,visible light and infrared.Through translating blanck visibleimage into optical image,and realizing collecting of weak signal under low illumination case and collecting and processing of high quality image,it makes Full-wavelength CCD system the powerful features such as the topography and landform scaning,traces exploration,file inspection,holographic photography and image processing.The whole band CCD system structure,characteristic and the application of the image interpretation technology were briefly introduced in this paper,and experiment band CCD selected was validated.
Research Progress for High Strength Structural Steel and Key Issues of Application in Seismic Zone
Authors: Ji Li Xia , An Teng
Published: July 2014

A review of recent research on mechanical performance of high strength structural steel (HSSS) in the level of both materials and members is presented, including the static material performance, toughness and mechanical property under cyclic loadings of HSSS, buckling and hysteretic behavior of high strength steel columns (HSSC), the ductility and resistance of bolted connection with high strength steel slices etc. Previous research work shows that the application of high strength steel (HSS) is limited in seismic zone .Finally, two design methods of using HSS in seismic zone are proposed based on current seismic design philosophy.
Investigation of Efficient Wavelength Conversion Based by Difference Frequency Generation in Step-Segmented Quasi-Phase Matched Gratings
Authors: Guo Jin Song , Wu Hai Dong , Wu Yun Wen , Wang Zhao Xia
Published: July 2014

We report difference frequency generation-based wavelength conversion in step-segmented quasi-phase matched (QPM) gratings. It is shown that both the pump bandwidth and the signal bandwidth are efficiently widened by adding the segment number of QPM grating and optimizing the poling period of the first segment and the period shifts between adjacent sections. Especially, flattop conversion efficiency response with peak-to-peak ripples less than 0.2 dB, which is very helpful to multichannel conversion in WDM systems, can be achieved simultaneously. For 3-cm-long waveguide, the signal conversion bandwidth and the pump bandwidth reach 166 nm and 0.88nm, respectively, meanwhile the maximum efficiency is-0.55dB.
Accurate Detection of Fault Signal in Large-Scale Communication
Authors: Shu Na
Published: July 2014

Deep data-mining methods of fault signal in large-scale communication system are researched. Although with the characteristic of frequency uniformity as signals distribute in each reaction zone, common method of fault signal detection based on shortwave dispersing is invalid employing in large-scale communication system, which presents the absence or instability of fault signal. For this reason, a method based on particle swarm optimization is proposed for fault signal detection in large-scale communication system. As reaction speed and activity scope within the whole particle swarm are replaced, accurate results are achieved. Taking particle swarm optimization, it is detected that whether there is a fault in communication systems. The experimental results show that proposed method in signal fault detection process can greatly increase accuracy of signal fault detection, as plays a greater role in future.
Astronomical Image Matching Based on the Cross-Correlation Algorithm
Authors: Sun Ji Jun
Published: July 2014

Image registration is widely used in the areas of image fusion, target tracking, remote sensing data analysis, medical image analysis such as organization pathological changes, under the constantly exploring to the image registration technology. In this paper astronomical image matching based on the cross-correlation algorithm is proposed and we focuses on adopting the registration form using the cross-correlation method after segmenting the astronomical images. The method can effectively solve the difficulties of the overall matching, represent the salient regions of features and implement local matching.
Study on Enhancing Terminal Identification in Track and Field Using Digital X-Ray Photography Image
Authors: Lai Guang Jin
Published: July 2014

Digital X-ray photography technology is under the control of the computer, to use one-dimensional or 2D X-ray detector to convert the captured image into digital signals directly to using image processing technology. It can realize the function of image analysis. We introduce X-ray photography technology into the terminal identification in track and field, and use the clustering algorithm to improve computer image clustering algorithm. Through capturing the digital signal of human head, arms and legs, it enhances the terminal recognition method in track and field. Finally we use MATLAB to calculate the captured image value of X-ray photography. Through calculation, motion capture and recognition of X-ray image are enhanced obviously. It provides a theoretical basis for researching on motion capture technology in track and field.
The Simulation of DS-UWB RAKE Receiver over the Multipath Channel
Authors: Zhang Ke , Cao Yu , Li Chang Fu , Liu Wei Ye
Published: July 2014

Ultra-Wideband (UWB) wireless communication is a new potential communication technology currently in its field. It becomes very popular in the world since it’s high performance, low radicalization and low cost. Currently UWB wireless system, we can call it Impulse Radio technology too, be invented in 20 century 1960s. But it was only used in military affairs field, bailout searching, radar location and so on. After civil using, it usually is used in indoor wireless LAN .In this paper, the development and application of UWB are introduced, the characteristic and limitation of UWB are simply analyzed. According to the simulating depending on Multipath channel, it shows increasing SNR about 1.5dB to the base of primary power district or increasing SNR about 1dB to primary power district and minor power district, we can get whole performance of RAKE receiver in perfect channel.
New Enhancement Algorithm of Infrared Images Based on Dual Threshold of the Exponential Transform
Authors: Lv Jing , Lv Jian , Wu Chuan Fu , Zhou Yun , Sun Feng Pei , Che Kai
Published: July 2014

Since the thermal imaging system detection ability and spatial resolution is lower than visible light CCD array,the definition of the infrared image is lower than that of the visible light image, which needs enhancement to improve image quality and for human vision. This paper proposes an enhancement algorithm of infrared images based on dual threshold of the exponential transform, firstly the original image can be processed by median filter to reduce noise,next separate the detail information of the 14-bit infrared image after noise reduction; then deal the detail image with the double threshold method based on the exponential transform,retaining or enhancing the detail information;when it comes to the base image,deal it with the gray linear mapping method, compressing its dynamic range.Finally the detail image and the base image are composed together after processing,getting 8-bit infrared image which can display and be processed on an ordinary display.
Study of Reentry Telemetry Signal in the Environment of Soft Demodulation
Authors: Fu Gang , Tao Min , He Qian
Published: July 2014

PCM/FM system is one of the most widely used in the rocket telemetry system. Target spacecraft reentry telemetry telemetry signals in the process of low signal noise ratio (SNR), that the breakthrough tradition demodulation method of demodulation threshold problem, combined with the PCM/FM signal phase characteristic, the research based on a baseband complex rotating orthogonal symbol detection software (MSD) to solve method, and the corresponding synchronization algorithm is applied to ensure the smooth operation of the demodulation. The simulation and test results verified the soft demodulation algorithm can make the demodulation threshold effectively reduce.
Research on FM Telemetry Software Demodulation Algorithms
Authors: Fu Gang , Wu Yan Jun , Li Ren Long , Wang Li Ping
Published: July 2014

Aimed at the problem that the demodulation threshold of non-coherent demodulation technology of PCM/FM telemetry system using frequency modulation in the present situation of aerospace measurement and control is higher, research a kind of multiple symbol detection based on maximum likelihood thought (Multi-Symbol Detection, MSD) demodulation method. This paper introduces the principle of multiple symbol detection and aiming at the shortcomings of the previous synchronization method, studies a kind of symbol decision process and synchronization of the combination of synchronization method.
Demodulation Method of Telemetry Signal Based on Virtual Radio
Authors: Yao Xue Lu , Fu Gang , Li Ren Long
Published: July 2014

According to the characteristics of PCM / FM signal demodulation method is proposed based on virtual radio platform. This paper discusses in detail the basic principles of this demodulation method and implementation process, analyze the demodulation performance and complexity of the method. Simulation results show that the method for actually received PCM / FM demodulation signal has better performance.
Parameters Estimation and Waveform Reconstruction of Chirp Signal Based on FRFT
Authors: Wu Yan Jun , Fu Gang , Liu Fei
Published: July 2014

The fractional Fourier transform (FRFT) is a generalization of the Fourier transform. The article first introduces the definition of FRFT transformation; then analyzed FRFT Chirp signal based on this humble proposed restoration Chirp signal in a noisy background in two ways: one is based on parameter estimation, and the other is based on the scores Fourier domain filtering to achieve signal reconstruction; Finally, simulation verify the feasibility of the above analysis.
Research on Demodulation of Pulse Code Modulated Signal Based on Instantaneous Frequency Measurement
Authors: Fu Gang , Wu Yan Jun , Feng Yue
Published: July 2014

According instantaneous frequency measurement theory, we propose a new PCM / FM telemetry signal demodulation method. This paper introduces the basic principles of this demodulation method and implementation process, the influence of instantaneous frequency measurement accuracy and the impact of factors on the Doppler frequency demodulation performance is proposed to improve the accuracy and instantaneous frequency measurement method demodulation performance .
The Application and Simulation of OFDM Technology in Power Line Communication
Authors: Chen Yi Wen , Xu Bin , Hao Jian Hua
Published: July 2014

Utilizing power line to transmit information speedily and safely is very important and significant. Whereas, the communication environment and construction of power grid are complex and hostile. The paper introduces the application, common modulation technology—OFDM and noise characteristics of PLC. The paper builds an OFDM input and output system and adds the power line noise into the channel, then compares and analyzes the difference between the OFDM output signals in common channel and PLC channel.
Effects of SnCl4 Concentration on the Properties of Electroless Deposited Ni-Sn-P Coatings
Authors: Wang Xi Ran , Wang Wen Tao , Yang Bin
Published: July 2014

In this paper, the influence of SnCl4concentration on deposition rate, tin content, corrosion resistance and surface appearance of the coating are researched respectively. The results show that SnCl4concentration is increased, deposition rate is increased, then reduced. Tin content in the Ni–Sn–P coatings is increased with increasing SnCl4concentration in the solutions. However, Ni and P contents in the coating is decreased slightly. The microhardness of plating before and after heat treatment is above 500HV. The hardness will be improved a little after heat treatment. With increasing SnCl4concentration, the polarization curves slightly move to positive direction and decrease corrosion current, which shows that the introduction of tin tends to enhance resistance corrosion of the coating. When SnCl4concentration is up to 30g/L, resistant corrosion of the films presents a drop various degrees. The deposits is smooth and uniformity, smooth by SEM and the content of tin is 2.5 to 4.1 percent by EDS.
Tracking Optimization of FH Signal Based on Wiener Filtering
Authors: He Qian , Wu Guang Zhi , Wu Yan Jun
Published: July 2014

Comparing with the traditional fixed carrier frequency signal, using FH (Frequency-Hopped) signals improved the performance of anti-interference of the TT&C system when bring the low signal tracking accuracy. In order to solve this problem, this paper proposed a loop structure of using wiener filter, the filter coefficient was deduced. Simulation results show that the loop tracking precision was increased after the optimization, and the improvement has relations with the filter order n. When, the speed measuring precision reached 30cm/s which was increased about 3 times than did not use wiener filter.
Analysis on Ranging and Velocity Measurement Performance of DS/FH Hybrid Spread Spectrum Signal
Authors: Wu Yan Jun , Yao Xue Lu , Xia Jiang
Published: July 2014

The measurement performance with the interference is presented with the new DS/FH hybrid spread spectrum signal system. The DS/FH system model is established. The change of the SNR ratio is obtained by analyzing the characteristics of three kinds of interference signal such as partial-band noise jamming (PBNJ), wide-band noise jamming (WBNJ) and additive white Gaussian noise (AWGN). Then the ranging and velocity measurement performance is got through the simulation.
Research of Image Denoising Method about Wavelet Transform with Neighborhood Average
Authors: Huang Chen
Published: July 2014

Because wavelet transform has good time-frequency characteristics, and its application in image denoising has been promising. Firstly, use the threshold method of the wavelet transform is used in removing image noise, and then the denoised image is smoothed using neighborhood average filtering with Gauss template. And wavelet denoising process and domain threshold selection principle are discussed. Simulation results show that this method can effectively reduce the noise and can remain most of image details better.
Face Recognition Based on Gabor Filter and Improved Linear Local Tangent Space Alignment Algorithm
Authors: Xu Xue Yan , Liu Jiao Yu , Shi Yuan , Deng Tuo
Published: July 2014

In this paper, Gabor filtering and linear local tangent space alignment algorithm and its improved algorithm are used on face recognition. The Gabor wavelet transform can detect the image information in different directions and scales, according to its selective direction and frequency characteristics. The LLTSA reduces the dimension of the sample while the LLTSA and the other improved algorithms extract secondary feature. Experiment and analyze the average recognition rate of the LLTSA and its improved algorithms with the variation of dimension. The experiment results show the effectiveness of the method, increasing the face recognition accuracy.
Hot Water Extraction of Corncob Hemicelluloses to Prepare Composite Films
Authors: Yu Qing Xue , Yu Guang , Zhang Yue Dong , Liu Ye Fei , Wang Hai Song , Chu Fu Qiang
Published: July 2014

In this study, corncob hemicelluloses were extracted by hot water to investigate its potential for film production. Extracted hemicelluloses were mixed with PVA 30 wt%, the prepared films had a smooth、uniform and continuous surface and dense cross section without the phase separation, as characterized by SEM. Besides, the mechanical properties and thermal characteristics tests showed that the films had a tensile strength of 4.6 MPa, elongation at break of 6.4%, and a nice thermally stability.
Study on the Implementation of RAKE Receiver in 4G System
Authors: Fu Hai Yang , Zhu Chu Rong , Jia Xiang Dong
Published: July 2014

The RAKE receiver has must been used in CDMA or 3G systems for its function to form the diversity reception of signals resulting from multi-path propagations. The basic condition for the implementation of RAKE receiver is that the spectrum spreading (SS) must be used in those systems. But that SS would not be existed in 4G system continuously, and OFDM and QAM would be used in that system instead. So the new method should be found to replace that SS code to separating those multi-path signals, making the RAKE receiver in 4G could be realized. This new method for the implementation of RAKE receiver in 4G System would be introduced in the paper, as well as the performance difference between those two kinds of Rake receiver.
3D Human Body Data Acquisition and Fit Evaluation of Clothing
Authors: Wang Zhen , Zhong Yue Qi , Chen Kai Jie , Ruan Jia Yi , Zhu Jin Cheng
Published: July 2014

This paper presents the method of 3D human body data acquisition based on 3D scanning and the non-contact fit evaluation of clothing based on the distribution features of residual space between clothing and human body. A Kinect camera is employed to collect point cloud data. The points cloud is treated by Geomagic for noise reduction and surface reconstruction. By analyzing the residual space between clothing and human body, the fit distribution of scanned clothing can be achieved. The fit evaluation will make contributions to clothing design, online sales of clothing and virtual try-on.
Electric Power Communication Network Alarm Data Acquisition System Based on CORBA Northbound Interface
Authors: He Yu Jun , He Yu , Peng Peng , Chen Ran
Published: July 2014

With the development of communication technology, the increasing scale of power communication network is bigger and bigger. Based on the important significance of electric power communication network to establish an alarm information acquisition system is necessary. CORBA, as a distributed processing environment interconnect solutions in hardware and software, is widely used in the field of network management for its high versatility. In this paper we use real-time CORBA platform TAO as a network management platform to develop a kind of electric power communication network alarm acquisition system.
A Novel Public Key Image Cryptosystem Based on Elliptic Curve and Arnold Cat Map
Authors: Chen Ling Jiao , Shen Ao Dong
Published: July 2014

For decades, symmetric cryptosystems, such as chaos-based ones, are designed for image encryption. In this paper, a novel public key scheme for image encryption is presented. Based on the improved elliptic curve cryptosystem and Arnold cat map, the novel scheme can offer high security while avoid exchange and distribution of secret keys. The experiments illustrate that the presented scheme is computationally less complex than the traditional asymmetric cryptosystems and suitable for large image encryption.
Research on Adaptive Face Gender Recognition Based on Compressive Sensing
Authors: Zhang Lin
Published: July 2014

An adaptive gender recognition method is proposed in this paper. At first, do multiwavlet transform to face image and get its low frequency information, then do feature extraction to the low frequency information using compressive sensing (CS), use extreme learning machine (ELM) to achieve gender recognition finally. In the process of feature extraction, we use genetic algorithm (GA) to get the number of measurements of CS in order to gain the highest recognition rate, so the method can adaptive access optimal performance. Experimental results show that compared with PDA and LDA, the new method improved the recognition accuracy substantially.
Optimized Analysis of Cyber Topology Based on Reliable Restraint
Authors: Yan Han
Published: July 2014

As telecommunication network is rapidly developing, modern telecommunication network is inclined to be in possession of large scale, sparse topology as well as high capacity. At present, these concerns have increased in network design and enhanced the exploration in the field of cyber topology. With network technology on the rise, especially the expansion of high-speed network telecommunication, scale of network is becoming larger and larger with much more volume of chains.
Research on Computer Cluster Load Balancing Mechanism
Authors: Li Xing Yu , Jiang Ting Ting
Published: July 2014

Currently it is difficult to use a single network computer application server to meet the demand of concurrent access to a large number of users. It is an ideal way to introduce in the cluster technology in the network for a computer system to solve this problem. In this paper, network computer server cluster on the basis of the existing network computer system is designed and key issues are studied.
The Development of Interactive Marine Incinerator Operational Training System Based on Web3D
Authors: Yao Wen Long
Published: July 2014

In this paper, the design scheme, technical route and system structure of the interactive marine incinerator operation training system based on Web3D are proposed based on the study of the marine engine room simulator project. The virtual reality technique, visual C# and IE real-time interaction technology are introduced to the marine incinerator operation training system and the development thoughts of the interactive marine incinerator operation training system based on Web3D are elaborated based on the 3D modeling optimization and real-time interaction technology. This study is a new type of marine engineering training mode, it can better meet the STCW convention in Manila amendments on incinerator equipment management requirements.
A Review of Cluster Based Routing Protocols in Wireless Sensor Networks
Authors: Wu Jing , Hou Guo Zhao
Published: July 2014

At present, cluster based routing protocols have been the main solution of routing scalability problem in wireless sensor networks. Based on the deep research on cluster based routing protocols, cluster based routing protocols were divided into two parts. The main routing protocols of each part were reviewed and analyzed. This work will contribute to the further study of cluster based routing protocols.
Analysis of the Technologies for Host and Port Scanning
Authors: Zhu Na Fei , Zhou Yue , Wang Wei , Lou Li
Published: July 2014

Host scanning and port scanning are the basis for attacking information system. The technologies commonly used in these scans can be classified as ICMP scanning, TCP scanning and UDP scanning. We analyze these technologies and make comparisons among them. Totally, ICMP are mainly used to discover the host, while the TCP and UDP are mainly for port scanning, except for ACK. At the same time, using certain special TCP datagram such as SYN packets and ACK packets, and UDP datagram, we can make a host scanning in a secret manner.
Technical Framework and Functional Framework on Sports E-Government Platform
Authors: Wang Li Xia , Zhao Li Gong
Published: July 2014

Constructing sports e-government platform is an important content that all levels sports departments carry out sports optimal allocation of resources, expand the development and use of sports information resources and to improve the level of development of sports undertakings. For difficult problems in the construction of sports e-government platform, this paper studies the technical framework and functional framework. The technical framework is composed of seven sub-systems that Infrastructure layer, Database layer, Basic components layer, Core services layer, Application system layer, Portal layer, Access channel layer and so on. The functional framework is composed of five sub-systems that Sports information distribution system, Sports transverse application system, Sports office automation system, Sports management information system, System maintenance management system and so on. Contents of this paper focus on improving the level of application, government information resources development and utilization as the main line, for enhancing sports work management, promoting the development of sports undertakings plays an important role.
Design and Implementation of Web Extraction System of Ceramic Products’ Information in the Business Website
Authors: Zhan Mu Qing , Lu Rong Hua
Published: July 2014

In the means of getting information from the Internet, the Web information extraction technology which can get more precise and more granular information is different from Search Engine, this article presents the technical route of Web information exaction of ceramic products’ information on the basis of analyzing the developing status of Web information extraction technology at home and abroad, and makes the extraction rules, and develops a set of extraction system, and acquires the relevant ceramic products’ information.
Behavior of Geosynthetic Clay Liners due to the Migration of Heavy Metal
Authors: Fan Jing Jing
Published: July 2014

To protect the underlying soil and groundwater from landfills, the landfills are commonly lined with layered liner systems. Geosynthetic clay liners (GCL) have been increasingly used in the landfill liner systems to substitude the traditional compacted clay liners (CCL) because of their low cost, easily construction behavior and low leakage rate. To study the behavior of the GM+GCL liner system used in China due to the migration of Pb2+, we introduce in detail GM+GCL liner systems proposed by the Chinese specification. Then one dimensional finite layer model is used to investigate the anti-pollution behavior of the CM+GCL composite liner systems, with the focuses on the heavy metal Pb2+. It could be concluded that the main migration way through the GM+GCL composite liner system is that the transport of Pb2+through a GM+GCL composite liner system of a landfill cover takes place primarily through the holes in the GM. The findings provide useful reference for preventing, controlling and treating groundwater pollution in the GM+GCL liner system technically and scientifically.
Design and Implement an Application Development Platform Based on Open Source Technology
Authors: Liu Tie Bin
Published: July 2014

This paper design and implement a J2EE application development platform based on open source technology by studying on Paoding-Rose, Spring, Mybatis, Activiti and other open source technologies. The platform can improve enterprise capabilities of independent research and development IT system.
The Application Research of Lightweight J2EE Security Framework
Authors: Hu An Ming
Published: July 2014

Lightweight J2EE framework to actually use efficiency, has been widely used in all kinds of information system development,However ,Spring is open source framework, its security and access control has been problem of concern,How to construct safe and effective Web applications, is the development process of the important link must be thinking。Based on the Spring frame structure technology on the basis of summing up the access authorization control methods and strategies, highlights the Spring framework in the development process of the advantage technology.
Based on SVM Tibetan Web Public Opinion Sentiment Classification
Authors: Li Ying Xing , Zheng Zong Jun , E Ya Ni
Published: July 2014

Tibetan Web text has increased rapidly in recent years. According to mining and analyzing the data about user’s comments, we could identify the Sentimental tendency and evolution. Therefore we can better understand the user's behavior. Hot Tibetan public opinion analysis at the same time also can give enterprise, government and other institutions to provide important decision-making basis. The paper first describes SVM algorithm. Then the study of public opinion and target Tibetan Web Sentiment classification is defined and described, after that the paper gives the basic ideas and experimental research program. Finally, we summarize the achievements and shortcomings of Tibetan sentiment classification, as well as describe the challenges and the prospects of its development prospects.
Design of Campus E-Commerce Platform Based on MVC Model
Authors: Zhao Sheng , Sun Yong Dao , Shi Xue Kui
Published: July 2014

Electronic Commerce is now spreading into all sorts of economic activities.Therefore, The E-commerce System call be applied extensively on Campus,aiming at the practical needs of campus business activities.This dissertation ion is going to study the“E—commerce System on campus”based on the project.The system adopts N-layer framework model, realizes its elasticity and expansion and lays a solid foundation for system maintenance and secondary development.
Design and Implementation of an Intelligent Cross-Platform IaaS
Authors: Guo Fen , Du Qing , Yang Jie
Published: July 2014

Cloud computing is considered to be the next generation of IT service model, and the virtualization technology is the key technology of it.The paper focuses on the design and implementation of an intelligent cross-platform IaaS platform which is called ICIaaS. It is based on the existing open source platform technology, while its deploying and scheduling strategy for virtual machines (VMs) is self-owned. The ICIaaS is compatible with the current mainstream commercial VM, and has applied in the current research project. It is concluded that it has achieved heterogeneous virtualized computing platform integration and intelligent VM management strategy.
A Network Information Filtering Method Based on Node Energy Transfer
Authors: Liu Ji
Published: July 2014

Network information filtering can be projected into link prediction in bipartite network to alleviate information overload. The paper discovers that node transfers redundant recommendation energy in network and gives bad effect on information filtering efficiency. Gathering node’s overlapping degree by factorizing negative matrix, redundant energy is reduced with overlapping degree and initial recommendation energy. The method endows information filtering system with dynamic recommendation prediction, the empirical results indicates the method can enhance information filtering performance.