bluuebunny/crossref_metadata_2025 huggingface dataset:
Research of Tracking and Prediction of Moving Object with Kalman
Authors: Wang Zhong Yong , Yang Song Chao
Published: August 2014

This paper puts forward a complete track forecasting models, using Kalman filter to track and predict the movement of objects without prior knowledge. Use the extracted Harris corner to calculate optical flow between two frames by L-K pyramid method, getting the convex hull of moving objects by optical flow clustering to separate the moving objects from background. Tracking and predicting the gravity of moving objects convex hull can solve the occlusion and separation problem between moving objects. Computer simulation and field test results show that the proposed method has higher tracking accuracy, and small amount of calculation.
Design and Research of Biological Information Based on the Signal Extraction Algorithm
Authors: Yu Yuan , Yuan Quan Bo , Li Xu
Published: August 2014

This article will extracte biological EEG information, extracted by EEG brain-computer interaction module. It has taken advantage of brain-computer interaction techniques, accurately extracted EEG data, modeling the data, analyzed EEG law, and the signal is used in Bluetooth smart car.The human brain with computers and external communications equipment that can detect and record brain activity by brain-computer interaction technology and brain signals. Brain waves are turned into a language that the computer can understand, so as to effectively control the vehicle, or other external devices.
A New Numerical Scheme for the Space Fractional Diffusion Equation
Authors: Cao Jun Ying , Wang Zi Qiang
Published: August 2014

We construct the numerical method of the space fractional diffusion equation in this paper. We propose an efficient method for its numerical solution. This method is based on a finite difference in time and finite element method in space. Convergence of the method is rigorously established. A series of numerical examples are provided to support the theoretical claims.
A New Auto-Extraction Algorithm of Lunar Craters for Chang’E Data Based on the Solar Incidence Angle
Authors: Ren Zi Hao , Jiang Hong Kun , Du Wen Liang , Tian Xiao Lin , Xu Ao Ao
Published: August 2014

A new algorithm for detecting lunar craters based on the solar incidence angle has been proposed, which converts the Chang’E CCD images to binary images first by detecting edges in the Chang’E CCD images, then the new algorithm calculates the average angle of the solar incidence angles of each edge, Comparing the average angle of each edge with the solar incidence angle of the whole image to delete those noise/false edges of craters. Finally, the common circle fitting has been implemented to detect craters from those edge images. The new algorithm proposed has been tested on different Mare areas and all testing results had shown that the new algorithm could get a satisfying effect.
A Novel Blind Source Separation Algorithm for Linear Mixture Signals
Authors: Liu Wei Hua , Zhang Yun , Chen Ying Fu , Wang Lei , Liu Jian Cheng
Published: August 2014

A novel blind source separation (BSS) algorithm for linear mixture signals is proposed. It is shown that the property can be used to separate source signals by finding an un-mixing matrix that maximizes the cost function value of separated signals. Simulation results illustrate the efficiency and the good performance of the algorithm.
An Improved Decision Strategy of Network Routing Based on Ant Colony Algorithm
Authors: Jia Yu Bo , Ding Qian Qian , Liu Dan Li , Zhang Yun Long , Zhang Jian Feng
Published: August 2014

-Aiming at getting a high efficient network routing decision strategy, to settle problems of slow convergence speed and easily to fall into local optimal, this paper proposes a new decision strategy based on ant colony algorithm. Memory device to record each time pheromone value and pheromone differences value of the adjacent times to decide follow the former route or find a new one are the focus of this paper. The new decision technology accelerates the convergence rate, improves network utilization rate and accuracy of network routing.
Application Demand Analysis of Message-Oriented Middleware with Pub/Sub Model on TT&C Computer
Authors: Wang Chong Nan , Wang Zong Tao , Yuan Gang
Published: August 2014

Message-Oriented Middleware(MOM) with Pub/Sub model is suitable for the information transmission of TT&C computer system for the advantage of fully information sharing, loosing coupling interconnects, many-to-many communication and flexible resources reorganization. This thesis introduces the basic concept of Pub/Sub model, analysis the characteristics of TT&C application.Priority it put forward the key technologies: Message model, Matching algorithm, Routing protocol and Redundancy virtualization strategy for establishing MOM with Pub/Sub model on TT&C compter system.
Chinese Short Text Semanteme Analysis and Emotion Value Quantization Algorithm
Authors: He Yi Xuan , Cui Ye
Published: August 2014

With the development of social platform, the number of status people use to express their feelings is so large that the requirement for analyzing emotion value and emotion trend quantitatively is so hot. To meet this need, we propose a FSM based model aiming at the feature of short text in Chinese. And with it, we can then evaluate the emotion value in a scientific and quantitative way. Through experiments, we prove the accuracy and the efficiency of this model.
Design and Implementation of FPGA-Based High-Performance Floating Point Arithmetic Unit
Authors: Tang Xia Qing , Liu Xiang , Gao Jun Qiang , Lin Bo
Published: August 2014

Since FPGA processing data, the presence of fixed-point processing accuracy is not high, and IP Core floating point unit and there are some problems in the use of design risk. Based on the improved floating point unit and program optimization algorithm is designed to achieve single-precision floating-point add / subtract, multiply, and divide operations operator. IP Core for floating-point unit design and FPGA development software provides comparative results: both the maximum clock frequency and latency basically unchanged, while the former occupies less hardware resources, to complete a plus / minus, multiply, divide computation time required for the former than the latter were reduced by 46%, 37% and 57%. The program is downloaded to the FPGA chip to get the same results with the simulation results verify the correctness and feasibility of the design.
Detection and Tracking for Anomalous Motion Targets Using Wireless Sensor Networks
Authors: Xiong Jing , Liu Zhi Jing , Tang Guo Liang
Published: August 2014

In this paper, we focus on the detection and relay tracking for anomalous motion targets, and present an automatic solution which combined the advantage of improved wireless sensor networks with single intelligent monitor. Particle Swarm Optimization (PSO) is used to deploy legitimately wireless sensor networks that consist of many static intelligent monitors and dynamic intelligent monitors, moving targets are extracted using Gaussian Mixture Model and the time difference method by each intelligent monitor, then each monitor judges the behavior of the motion target is legal or not by the new method couple with behavior template matching and feature points tracking. Monitors relay track the anomalous target considering the associated information and time difference between in and out to the surveillance area. The experiment results show that the solution has a better performance and less energy lost than other analogous methods.
Distance Features of Different Fatigue State
Authors: Xiao Hua Bo , Mu Zhen Dong
Published: August 2014

People in a different state of fatigue, mental status will be significantly different, brain waves are a direct reflection of mental state, and then the brain waves in different states collected will not have a significant difference as well? In this paper, Fisher distance to calculate the difference between fatigue characteristics, by the characteristics of the different states to analyze, to use brain waves to reflect the purpose of human fatigue.
The Friction and Wear Properties of Cu-Te-Li Alloys with High-Strength and High-Conductivity
Authors: Zeng Tao , Jiao Lin , Zhu Da Chuan , Yang Chen
Published: August 2014

The friction and wear properties of Cu-Te-Li alloys under dry sliding condition were studied by M-200 wear testing machine. The morphology and chemical composition of worn surfaces were analyzed by SEM and EDS, thus the effect of aging treatment on friction coefficient, wear rate and wear mechanism was discussed. The results showed that Te element could improve the wear resistance of copper alloys. With Te content increasing, the friction coefficient of Cu-Te-Li alloys declined slightly and tended to be stable as a whole, while the wear rate decreased obviously. During the process of dry sliding friction, adhesive wear was the dominant mechanism, with oxidative wear coexisting. But for the Cu-Te-Li alloys after aging treatment, abrasive wear appeared and adhesive wear was intensified, especially at higher friction velocity.
Hardware Design of Track Circuit in Rail Transit Test System Based on ICL8038
Authors: Hu Chun Hong , Chen Yu , Sun Bai Xiang , Zhai Guo Rui
Published: August 2014

Rail transportation experimental system is the urgent need of modern railway signal professional teaching equipment in the university. This equipment can deepen students' understanding of theoretical knowledge and improve their ability of practical operation. In this paper, the hardware design of rail power supply circuit in the testing system was completed. Using ICL8038 as a signal generator of the power output board, the design met the functional requirements in practical test.
Holography Reconstruction of the AUV Radiated Acoustic Field and the Influencing Factors Analysis
Authors: Wan Hai Bo , Zhu Shi Jian , He Qi Wei , Ding Shao Chun
Published: August 2014

To localize and identify the noise sources of the AUV, the cylindrical NAH method was proposed. The feasibility was verified by the acoustic field simulation, the influence of the array test distance, holographic planar array position errors and the reconstruction phase errors on the accuracy of the sound field reconstruction was analyzed, which would provide some references for the engineering applications.
Image Processing and Sparse Resolution for Underwater Imaging
Authors: Sun Xiao Dan , Zhang Zhuo , Zhang Xue Wu
Published: August 2014

Super-resolution is useful for weak-target image reconstruction. The technique, however, is not yet suitable for underwater imaging implementation due to the complexity of underwater environment. In this paper, an image processing and sparse super-resolution is proposed to make it more suitable for underwater images. In this paper, image processing and image super-resolution are combined. It firstly used histogram equalization to increase local gray value and extent the gray value range to mate the details of the image texture range more distinct. By this we can raise the attention of the human eyes; then use Canny edge enhancement operator to make the edge of the image more clear; finally, by combining classical underwater point spread function (PSF) and the semi image blind restoration method, the image quality are further improved. The experimental results showed that the image recovered by this method had shaper edge and clearer textures.
Optimal Path Planning of Beidou Navigation System Based on Dijkstra Algorithm
Authors: Wu Shao Kai , Zhang Jing Lei
Published: August 2014

The optimal path planning plays an important role in the satellite navigation system. This paper uses the Dijkstra algorithm, which gives a shortest path first, to find a more effective travel decision. The decision combines the Dijkstra algorithm with the real-time traffic information and gives an effective travel plan. This system is developed under C# environment, achieves the goals of travel path planning and traffic guidance, and can supply a variety of travel plan to the traveler according to the difference influence factors.
Software Design for Micromouse Straight Path Navigation
Authors: Zhang Hao Ming , Peh Lian Soon , Wang Ying Hai
Published: August 2014

Micromouse is a small autonomous robot, which must navigate itself through an unknown maze from the start to the destination. The main challenge for micromouse is to solve the maze information after searching to find the optimum path. Normally, the micromouse has to remain in the centre of the cells when traveling in the maze, In order to ensure the correctness of position, detailed design of software for micromouse navigation in straight path was designed.
Solid Rocket Motor Finite Element Analysis Based on the Reverse Modeling of ICT Images
Authors: Li Peng , Zhou Hong Mei , Lu Hong Yi , Zhu Min , Chen Qing Gui
Published: August 2014

To Evaluate SRM effectively, according to the structure characteristics of solid rocket motor, the series of solid rocket motor ICT images were processed with edge detection ,edge thinning, contour tracing, contour segmentation, and contour fitting. The raster images were converted to vector images which can be recognized by the CAD modeling software. Then, according to the vector images, SRM was modeled by the software, and the model was studied with finite-element analysis. The experimental result indicates that the quality of the model is good, and the result of the finite-element analysis can reflect the state of the experimental SRM.
Solitary Wave Solutions, Periodic Wave Solutions and Folded Localized Excitations for the Dissipative Zabolotskaya-Khokhlov System
Authors: Ren Qing Bao , Ma Song Hua , Fang Jian Ping
Published: August 2014

The mapping approach is a powerful tool to looking for the exact solutions for nonlinear partial differential equations. In this paper, using an improved mapping approach, a series of exact solutions (including solitary wave solutions and periodic wave solutions) of the (2+1)-dimensional dissipative Zabolotskaya Khokhlov (DZK) system is derived. Based on the derived solitary wave solution, we obtain some folded localized excitations of the DZK system.
Speaker Recognition Techniques
Authors: Zong Feng
Published: August 2014

The speaker recognition technology and development of the basic concepts of history, lists and compares several commonly used feature extraction and pattern matching methods, summarize the current problems and its development were discussed.
Study on Synthetic Aperture Radar Image Denoising Algorithm
Authors: Chen Wu Fen , Liu Ai Lian , Xia Jia Jia , Duan Chao Lei , Yang Song Song , Hu Wan Ceng
Published: August 2014

In synthetic aperture radar (SAR) inherent speckle will affect the legibility of image details; give the image target detection adverse effects. In order to reduce the SAR image speckles noise, this article provided an improved algorithm based on median filter and wavelet semi-soft threshold shrinkage. First, reduced the SAR image speckle with median filtering method, then, with the filtered image, filtering the image with wavelet half soft threshold value contraction algorithm to noise, Simulation results show that the algorithm based on median filtering and improved algorithm of wavelet half soft threshold shrinkage of SAR image can better remove the speckle noise of the SAR image, while keep better edge, in Equivalent Number of Looks (ENL) and edge keep ability (FOM) aspects, it would be better than median filtering.
The Exploration and Implementation of the Interactive Multimedia Network Autonomous Learning Platform
Authors: Xiao Shou Bai
Published: August 2014

In the paper the interactive multimedia network autonomous learning platform is analyzed, through which its use case diagram is presented. The autonomous learning platform consists of user register module, user login module, teacher profile module, discussion and Q/A module, online test module, learning video module, system introduction module, material download module and backstage administration module. Primarily, the design and development of the platform is meant to solve the problem of data exchange between database and pages. Data are updated or deleted when the data of pages are transmitted to backstage database. The implementation of the autonomous learning platform fulfills people’s urgent demands of the online education, settles the drawback that education and being educated in traditional approach cannot be conducted at different time and in different places, and enhances the efficiency of teacher’s teaching and students’ learning enormously as well.
The Optimization and Application of Kriging Model Based on Quantum-Behaved Particle Swarm Optimization
Authors: Zhao Yong , Li Ben Wei , Zhang Yun , Chen Ying Fu
Published: August 2014

Inspired by the facts that the original Kriging model is sensitive to the initial value of its correlation model parameters and extremely easy to fall into local optimal solution, a method on Kriging correlation model optimization based on quantum-behaved particle swarm optimization (QPSO) algorithm is proposed.The QPSO algorithm is introduced to search the global optimal solution to the parameters of the Kriging correlation model, and overcome the dependence on initial values of the pattern search method. After that, the optimized Kriging model based on QPSO is applied to the establishment of surrogate model and reconstruction of flow characteristics of a low pressure compressor. It is proved that even with small sample data, surrogate model of the flow characteristics based on QPSO still has a high accuracy, and its application prospect is considerable.
Wavelet-Based Adaptive Detection of Magnetic Anomaly Signal Contaminated by 1/f Noise
Authors: Nie Xin Hua , Pan Zhong Ming , Zhang Da Sha , Zhang Wen Na
Published: August 2014

Magnetic anomaly detection is a passive method for detection of a ferromagnetic target, and its performance is often limited by external noise with a power spectral density of 1/fa, (0<a<2). In consideration of this kind of noise is non-stationary, self-similarity and long-range correlation, an effective adaptive detection based on the wavelet transform is proposed in this paper. The discrete wavelet transform of the noisy signal is chosen as the inputs of the adaptive whitening filter, and then decomposed by the orthonormal basis functions (OBFs) and the energy signal was taken out for threshold detection. The simulation results show that the algorithm improves the effect for detecting weak magnetic anomaly signal contaminated by 1/fanoise.
Wideband SPDT Switch With TTL Control
Authors: Wang Guo Qiang , Liu Cheng Peng
Published: August 2014

this paper mainly introduces a wideband SPDT switch with TTL control. Firstly, everypossible configuration is contrasted, the theories of basic GaAs switch configurations arementioned. Secondly, the theories of basic GaAs switch configurations are mentioned.Subsequently, appropriate topology is selected for this SPDT switch. This switch has been realizedby 0.5µm GaAs pHEMT process. this switch exhibits high performance: over DC~4GHz, insertionloss is lower than 1dB; The isolation is lower than 50dB; the ripple variation of insertion loss is lessthan ±0.15dB; input return loss is lower than 14dB; on state, output return loss is lower than 16dB;off state, over 0.2GHz-4GHz, output return loss is lower than 12dB; on and off time are less than55ns. The layout of the switch with a chip size is 0.81 mm×1.22mm.
Comparison and Improvements of Feature Extraction Methods for Text Categorization
Authors: Wang Juan , Zhang Zhi Xun , Wang Yong Dong
Published: August 2014

Feature extraction is a key point of text categorization[1]. The accuracy of extraction will directly affect the accuracy of text classification. This paper introduces and compares 4 commonly used methods of text feature extraction: IG (Information gain), MI (Mutual information), CHI (statistics), DF (Document frequency), and proposes an improved method based on the method of CHI. Experiment result shows that the proposed method can improve the accuracy of text categorization.
A Solution of Designing Remote Video Conferences Based on ARM11
Authors: Yu Yuan , Li Xu , Wang Hui Juan
Published: August 2014

In this paper, ARM11 is a development platform to design remote video conferences systems, the traditional video conferences is successfully resolved, which has shortcomings of high cost of system and hardware demanding.The system is completed with real-time video conferences and high definition, system load is low, the installation is flexible.
Keywords: ARM11 video conferences real-time
The Application of Multimedia Video Technology in 3D Table Tennis Games
Authors: Xiao Shou Bai
Published: August 2014

With the continuous development of computer technology, the technology in designing and developing 3D games has been more and more mature. Compared to the traditional ones, 3D games present more real screen effects and stronger visual impact due to its adopting the concept of stereo space coordinates, increasing the arbitrariness of space operation and its own attraction. By applying media video technology to 3D table tennis games, players can hit the ball with the racket to implement the move of the ball in the game scene. To achieve the ball’s real-time depiction, every frame in the game must be updated. An outstanding 3D game cannot be developed without an excellent 3D game engine. The complex graphic algorithm of the game is encapsulated in modules efficiently while simple and effective SDK interface, powerful editor and matching third-party plug-ins are provided externally. Meanwhile, it possesses the function in network, database and script, etc, making the development of 3D games easier and of high quality. Numerous UI (graphical interfaces) are offered in the whole game to help players understand and learn the game. The game is operated so easily that it can be well played only through click, which simplifies the fussy operation of regular ones and provides players with more enjoyment.
Short-Term Wind Speed Prediction on Base of Improved Least Squares Support Vector Machine
Authors: Zhao Zheng , Zhang Long Xin , Liu Hai Tao , Liu Zi Rui
Published: August 2014

Accurate wind speed prediction is of significance to improve the ability to coordinate operation of a wind farm with a power system and ensure the safety of power grid operation. According to the randomness and volatility of wind speed, it is put forward that a WD_GA_LS_SVM short-term wind speed combination prediction model on basis of Wavelet decomposition (WD), Genetic alogorithms (GA) optimization and Least squares support vector machine (LS_SVM). Short-term wind speed prediction is carried out and compared with the neural network prediction model with use of the measured data of a wind farm. The results of error analysis indicate the combination prediction model selected is of higher prediction accuracy.
Status and Prospect of Disassembly Process of Electronic Components on Waste PCBs
Authors: Li Pei Lun , Shi Yi Feng , Liu Dian Wen
Published: August 2014

With the development and exhaustion of resources, the reclamation of secondary resources, especially urban mine, must be on the agenda. The major part of urban mine is waste printed circuit board (WPCB), and the effective processing of WPCB is depend on the disassembly. This article analyze the form of fastening, the method of fusion welding ,the recovery of welding and the disassembly of electronic component in process of disassembly, and point out the direction and tendency of development.
Research on Practice Teaching of Civil Engineering on the Basis of the Student Competition
Authors: Gao Chao Hong
Published: August 2014

The Student Competition is the mass activities for College Students, is the effective way to cultivate innovative talents and promote the development of the practice innovation system in universities.Take practical teaching for students majoring in civil engineering as an example, combine the meaning system of the Student Competition ,and explore the practice teaching mode based on the Student Competition.
Cross-Cultural Awareness in College English Teaching
Authors: Liang Bin
Published: August 2014

the language has the rich cultural connotation, the relationship between language and culture closely. In the process of college English teaching, we should not only focus on language knowledge teaching and language skills training, and to conduct culture teaching, cultivate students' cross-cultural awareness, improve the students' intercultural communicative competence. The article first introduces the definition of culture and cultural awareness and the relationship between language and culture, and then focus on the content and goal of culture teaching, and the ways to cultivate cross-cultural consciousness and methods, etc.
The Application of Information Technology in the Fine Arts Teaching and Implementation
Authors: Huang Ya Qi
Published: August 2014

multimedia, networking has greatly opened up new forms of classroom teaching in the art disciplines leverage the Internet and a variety of multimedia resources, integration of information technology to improve the quality of teaching curricular interactive, online education opens up the art of teaching art The new field, computer-aided instruction to solve the difficult art teaching dynamic presentation, process long, cumbersome operation and other issues.
Research on the Reform of Metallurgical Engineering Practice Teaching
Authors: Yang Wen Qiang , An Juan , Yuan Xiao Li , Xia Wen Tang
Published: August 2014

The cultivation of the practical ability for Metallurgical Engineering students is very important to help them succeed in a fast paced society and new complex world. In this paper, the current structure of practice teaching system was explained. Meanwhile, based on the detailed analysis of the issues exist in current practice teaching of Metallurgical Engineering, the purpose of the practice teaching was expounded and the reform of the practice teaching was explored.
The Design and Realization of Online Submitted System of Graduation Design Documents
Authors: Zeng Xu , Sima Yu
Published: August 2014

First of all, this paper expounds the necessity of designing the system of submit online of graduation design documents, analyzes the problems existing in document management in Zunyi medical university; Secondly, the system of paper submission of the documents was carried on the concrete analysis and design; Finally, by comparing the time cost of the traditional way of documents management of 2012 with the online mode to documents management of 2013, it is concluded that the submission system online can improve the work efficiency and has more advantages.
An Investigation of Electronic Logistics Management in the Taiwanese Textile Industry: Using Everest Textile as an Example
Authors: Huang Yin Tsuo , Chan Stephen H. , Liu Fang Yi
Published: August 2014

With the advance of information technology and the advent of the Internet era in the 21st century, enterprises worldwide have been developed in the direction of e-business and the Internet economy. After Taiwan joined the World Trade Organization and information technology contributed to the development of the Internet, Taiwan became a highly competitive environment for enterprises. To increase competitiveness, enterprises should promote global management strategies rather than limiting the enterprise to one area. The textile industry in Taiwan can be rejuvenated by using information technology and adopting an enterprise resource planning (ERP) system. When such a system is adopted, the business-to-business procedures in the industry are not independent from each other, but form a supply chain management system by integrating upstream and downstream operation procedures to reduce production costs and preparation time, increase profits, and create substantial added value. Everest Textile Co., Ltd, which is a textile manufacturer that receives assistance from the Industrial Development Bureau, Ministry of Economic Affairs, Taiwan, was used in this study as an example. The strategies, mode, and benefits of Everest Textile’s electronization were analyzed. Furthermore, relevant literature was reviewed to propose a textile industry electronization model, which is provided as a reference for other textile manufacturers in Taiwan to facilitate the overall improvement of the industry.
Application of Lean Quality Management in Heat Treatment Industry - An Example of Enterprise N
Authors: Du Xue Mei , Lei Wei , Ding Jing Yu , Wang Nai Jia
Published: August 2014

Based on the fact that there is little advanced quality management methods applied in heat treatment industry, this paper first analyzes the connotation of lean quality management and then proposes lean quality management model comprising four parts of standards execution with zero defect, process control by quantification, quality assurance by Kanban method and orientation of customer satisfaction. Furthermore, the paper takes the heat treatment branch of N company as an example to study specific application of lean quality management model in heat treatment industry, and the effect shows that the proposed model can improve key quality elements of heat treatment and meanwhile reduce the cost a lot.
An Empirical Study on Exponential Smoothing and Seasonal Model
Authors: Lin Hai , Mu Bao Liang
Published: August 2014

People put a lot of efforts studying systems with large amounts of data in the last a few decades. In some situations, people have some history data and want to use them to predict new coming data. People have proposed a lot of different models that can do data prediction. In this paper, we do some empirical comparison on two models, the seasonal model and the exponential smoothing. Both models have strengths and weaknesses. Our experimental results show that, in general, the seasonal model produces better results than the exponential model.
Team Organization Model and its Algorithm for a Project under Complex Constraints
Authors: Zhu Xu Ying , Hou Kai Hu , Chen Cheng
Published: August 2014

Abstract. This paper focuses on how to establishment of project team highest efficiency in the single project which the relative complexity and human resource with relatively stable attributes exist. An attempt to model team organization in complex constraints was had. In designing this model, there are three steps:(1) the initialization of definition via four models, (2) the definitions of five variables of people, project, project factors, factors’ weights, and people evaluation indexes, and (3) the implementation of the model. Then the algorithm of problem was designed. The first thing is that all variables are evaluated quantitatively and the weights are obtained. That is performed by a table. The solution was acquired in a way of several iterations.It is paid much attention that not only the related factors involved in this algorithm are able to be either extended or cut according to the actual requirement but the method computing the weights is able to be replaced by others for instance the fuzzy evaluation
Design Research on Computer Logistics Information Management System
Authors: Song Jin Sheng
Published: August 2014

The database, functional module and intelligent decision-making technique of the computer logistics information management system of some logistics company are analyzed in details by taking the logistics information system of some logistics company as the example; the basic principle structure and relevant technique of the computer logistics information management system are stated; finally, the analysis design scheme for the system is put forwards; the key function design of the system is additional provided with the compilation of the function code in order to offer reader reference; and it provides reference to develop the computer logistics information system further.
Key words: Computer, logistics information, management system
Experimental Study of Low-Pressure Water Jet Assisted Laser Drilling on Al2O3 Ceramic
Authors: Lu Ping Wei , Yuan Gen Fu
Published: August 2014

The direct laser drilling could bring the recast layer and micro cracks, here introduced a new method named low-pressure water jet assisted laser drilling.It mainly studied some factors influence on the surface and inwall morphologies of Al2O3 ceramic when using low-pressure water jet, such as auxiliary gas pressure、pulse energy、repeated frequency.By optimizing the parameters, it can get the better surface and inwall morphologies. The results show that, taking advantage of the erosion of water jet, the composite drilling can obviously lessen molten slags, in order to reduce the recast layer and micro cracks, the processing quality can be improved much.
Design of Testbed for Feel Simulator of Battleplan
Authors: Zhang Jun , Yang An Yuan , Chen Han Hua
Published: August 2014

According operating principles and testing demands of feel simulators of battleplan, this article designs a new model testbed for them, which can be operated by auto and hand. The testbed adopts step motor to increase force and displacement on an even keel, applys ICC to gather and dispose test data. The test soft is programmed by C++ Builder 6. 0, it has testing, recording and saving data, report forming and printing functions, etc. It can test automatically. It is proved that the test-bed has high precision of testing and it is convenient to operate. The test-bed is suitable for all sorts of feel simulators testing of most battleplans made in our country.
Fault Diagnosis Approach for Incipient Bearing Fault in Wind Turbine under Variable Conditions
Authors: Song Lei , Zhang Xin Rui , Su Lu Wei , Gu Yu Jiong
Published: August 2014

For the extreme operating environment and variable working conditions of wind turbine and difficulty in finding fault feature accurately and promptly, a new incipient bearing fault method based on selecting optimal IMF (Intrinsic Mode Function) and Hilbert spectrum was proposed. Firstly, non-stationary time-domain signals are converted to stationary or quasi-stationary angle-domain signals; secondly, the EMD (Empirical Mode decomposition) method is used to decompose modal for angular waveform signal and obtain the IMF, and optimal IMF components are selected by cross-correlation criteria and kurtosis criteria to reconstructing signal. Finally, the reconstruction signal is processed by using Hilbert transformation to obtain the marginal spectrum. The paper finally verifies the effectiveness of the proposed method through experiment.
Pre-Deformed Design of Optical Lenses with Reverse Engineering and Virtual Manufacturing
Authors: Li Wei Zhen , Wang Song Hao
Published: August 2014

For higher geometrical accuracy requirement of optical lens, much research has been conducted either by changing the injection process parameters or changing the material of the mold or the mold manufacturing process. Although some degree of improvements was achieved, those were occasional but not-repeatable. One conventional procedure has been: the injection mold core must be polished several times to obtain qualified lens product in preproduction trial, very uneconomical and inefficient. In this paper, modern engineering tools were applied to simplify the correction process in optical lens fabrication. Combining virtual manufacturing with reverse engineering technology, the method was demonstrated very powerful. For the optical lens of 70x29.1mm in this research, the maximum deviation from the flatness after regular plastic injection molding was 0.208mm. While with combined technology of VM and RE the error was reduced to 0.008mm only by once iteration with an improvement of 96.15%. Not only the technology could be extended to larger or more challenging lens fabrication, it could also be applied to curved surfaces. This is really great tool to achieve higher quality optical lens production with much lower expending in labor and funding.
Research and Development of a Knowledge-Based System for Blanking Die
Authors: Sun Bao Fu , Song Yang
Published: August 2014

This paper presents the research work involved in the development of knowledge based system (KBS) for blanking die. Automotive covering parts stamping production as one of the important chain of automobile manufacturing, especially the design of blanking die played a vital role. And the success of blanking die design often rely on the experience and knowledge of experts. And because of the knowledge of "privacy", new mold production designer is difficult to be familiar with the design processes and structure parameters in a short period. Such a phenomenon extended the production cycle, and increased manufacturing costs. This topic from the perspective based on knowledge, by means of integration, in view of the blanking die design of similar offers ways and means to solve the problem.
Research on the Forming Path for Fabricating the Sheet-Metal Part with Non-Horizontal End Face Using CNC Incremental Forming
Authors: Zhu Hu , Ju Jin , Liu Yi Bo
Published: August 2014

For the purpose of the fabrication of the sheet-metal parts with non-horizontal end face using the sheet metal CNC incremental forming technology, two kinds of path generating methods, namely the level path perpendicular to Z axis method and the equidistant path parallel to sheet metal are proposed in this paper. Both of the paths are generated by Visual C++ and OpenGL graphics library, the effect of the two kinds of forming paths to the forming quality of the sheet part with non-horizontal end face is researched using the finite element analysis method in this paper.
Rolling Bearing Feature Extraction Based on Wavelet Filtering with Optimal Combination Bands
Authors: Zhang Shuai , Zhang Yong Xiang , Zhu Jie Ping
Published: August 2014

In order to select the band-pass filter parameters reasonably, a new method of rolling bearing feature extraction based on wavelet filtering with optimal combination bands is proposed. Filter banks with different number of filter/octave are constructed by Morlet wavelet, which are used to filter the signal. The filters with the optimal frequency-band are selected according to the kurtosis of the filtered signal. Then, the optimal band filters in each filter bank are combined to filter the signals and the feature extraction is available. Through simulation and experimental verification, results show that the proposed method is more effective than the common one.
Simulation and Design of Portable Underwater Acoustic Transducer Test Device
Authors: Huang Tao Wei , Chen Di Xiang , Fan Cheng Guang
Published: August 2014

In this paper, a portable underwater acoustic transducer sensitivity test device is designed to overcome the disadvantages of traditional test methods, such as the bigger size of anechoic pool, and single function of the vibrating column of liquid method. This new design has the advantage of small size, easy to carry and implement. A model of this device is constructed based on the finite element analyse software COMSOL Multiphysics. By calculating the sound field distribution of the test device model, the optimization size of the piezoelectric ceramic can be determined. Also the effect of some other key parameters, such as the material of vessel and thickness, are considered. All these results can provide the theoretical basement of the design of portable underwater acoustic transducer in practice.
Study on Influence of End Concavity of Rolled Piece by Billet Circular Arc Angle with CWR
Authors: Hu Bin , Shu Xue Dao , Hong Zhe
Published: August 2014

In order to solve the stub bar defects and improve the material utilization, this paper proposes the method of using billet with circular arc shape on the end face to control the end concavity. It establishes the cross wedge rolling finite element model by DEFORM-3D software, and through the displacement method to analyze the flow law of metal of rolled piece on the end face, and obtains the influence law of end concavity with different circular arc angles by numerical simulation. Finally, it gets the result that the end concavity length decreases with the increase of the circular arc angle. In comparison with the original billet, when the angle is 90°, the end concavity of rolled piece reduces by 69.04%. The results provide a theoretical basis for saving material and achieving the cross wedge rolling production without the stub bar.
The Forced Response Analysis of Heavy Duty Vehicle’s Cab
Authors: Liu Jun Liang , Long Yu Hong , Li Wen Shang , Cai Jie
Published: August 2014

An automobile will sustain various incentives from the outside and inside in the process of being driven, in which the impact of the wheel and the vibration of engine mainly dominates. This paper gets the inherent frequency through modal analysis on finite element model in a heavy vehicle’s driving cab. And then it conducts the forced response analysis on finite element model by modeling a condition where the vibration of driving cab is caused by outside incentive. Through analyzing, it finds the main response region generated in driving cab when affected by outside incentive. At the same time, it can provide certain theoretical basis for controlling the noise of driving cab in the future.
The Optimal Design for Ring Blank Dimensions in Inner L-Shaped Ring Rolling Process
Authors: Meng Wen , Zhao Guo Qun , Guan Yan Jin
Published: August 2014

As the needs of profiled rings continuously increase, studies about profiled ring rolling processes is becoming a hot problem. This paper established a FE model of hot ring rolling process of inner L-shaped ring based on ABAQUS/Explicit software. The reasonable value range of mandrel feed rate is determined at first. Then the deformation characteristics of rings are analyzed and compared in L-shaped ring rolling process under four different ring blank dimensions. Finally, for realizing a steady rolling process and obtaining good dimensions properties of rolled ring, an appropriate ring blank dimension is given.
Modal Analysis Based on Finite Element Jaw Crusher Rotor
Authors: Hao Mei Ling , Cheng Guang Juan
Published: August 2014

The vertical shaft impact crusher the material is accelerated , while the rotor bear complex dynamic loads , finite element method for three-dimensional modeling of the rotor body and modal analysis , discussion and analysis of results. Won the first 20 natural frequencies and mode shapes , as well as the weak link parts may exist , making the crusher prone resonance attention away from the source at work , as well as designers kinetic design provides some guidance basis.
Surface Waviness in Abrasive Waterjet Offset-Mode Turning
Authors: Zohourkari Iman , Zohoor Mehdi , Annoni Massimiliano
Published: August 2014

In this paper, surface waviness quality in abrasive waterjet offset-mode turning has been studied regarding variations of some process parameters. Influence of five main operational parameters such as water pressure, cutting head traverse speed, abrasive mass flow rate, workpiece rotational speed and depth of cut on surface waviness of turned parts have been investigated using statistical approach. Second order regression model presented for surface waviness. The model accuracy was verified by comparing with experimental data. It found that abrasive mass flow rate, cutting head traverse speed and DOC are the most influential parameters while water pressure and workpiece rotational speed show lesser effectiveness.
Research on One Kind of Intellectualization High Accuracy Digital Adjustment Direct Source
Authors: Xu Yan Hui , Zhang Dan Tong
Published: August 2014

The power source uses the digital adjustment, the closed loop real-time monitoring.The output precision is vary high. It also has both the dual over-load protection and alarm, which is suitable especially in each kind situation of the high accuracy request.This design intellectualization direct-current power supply uses the self-restraint keyboard entry. The system of intellectualization high accuracy digital adjustmen direct source contains D/A module and A/D module . D/A module adopts low-priced 8 bits DA chip. DAC0832 is a electric current exports type 8 bits D/A converter , adopting to reversing T type resistor network. The ADC0809 chip,with 8 bits AD changes ,accomplishes the data collect function and makes up into the closed cycle circuit. The inside of ADC0809 has output lock-memory implement , it can link up with AT89C51 monolithic machine directly. The stabilivolt outputed and over-stream protection module adopts the in-line stabilivolt circuit which has used three end integrated stabilivolt chip , adopting LM317 and LM337 series three hold adjustable stabilivolt tube., LM317 is a three end adjustable voltage stabilizer integrated circuit of USA country semiconductor company.The single-chip microcomputer receives voltage value information of keyboard input, and carries on processing.
Mechanical Properties Analysis and Application of Metal Matrix Composites
Authors: Shang Miao , Lin Guo Min
Published: August 2014

Through discussing the characteristics of metal matrix composites, the mechanical properties of metal matrix composites is analyzed, the mechanical parameters of metal matrix composites is tested by experiment, the specific application is instructed in the field of aviation, the development direction of metal matrix composites is pointed out combining with the characteristics of material itself.
Design, Fabrication and Evaluation of a Multifunctional Jacket with Optoelectronic Effects
Authors: Shih Ju Yi , Lai Shu Ling , Cheng Huai Tzu
Published: August 2014

The modified innovative product design and development method has been developed and used for a design work of innovative and multifunctional jackets with optoelectronic technologies in a previous study. There were six items of key design themes were found out, including practicality, aesthetics, portability, washability, multifunction and composability. In this study, a design strategy and solution was proposed and a multifunctional jacket with optoelectronic function was completed. Finally, a survey with questionnaire was executed and analyzed for evaluation and verification of the design achievement. According to the consequence of data analysis, the performances of a new innovative and multifunctional jacket of this study are better than those of a traditional jacket.
A Kind of Online Insulation and Error Online Monitoring Technique
Authors: Wang Huan , Wang Ru Zhang
Published: August 2014

A kind of online insulation and error monitoring technique had been introduced in this paper and this kind of technique had been applied on a dry-CT. This kind of technique takes the low-voltage capacitor which series with the end-screen integration into the insulating core of CTs. The technology ensure the connection point of high-voltage capacitors and low-voltage capacitor will never disconnected and the end-screen lead will grounded forever. In terms of error measurement, self-calibration and self-examination functions are achieved with adding standard and air coil next to the measuring coil. Independent power supply technique makes the device mounting more convenient.
The Optimized Design of Coordinated Control System Based on Load Feedforward and Unidirectional Decoupling
Authors: Zhai Yong Jie , Zhang Jun Ying , Zhang Yan Xia , Zhao Jin Song
Published: August 2014

In actual operation, the rising load will lead to the reduction of pressure because of the long delay of the boiler. It can lead to the main steam pressure lockout in severe cases. The proposed model is derived by the principle analysis of control object and the introduction of load feedforward. The unidirectional decoupling method is verified by the simulation in Matlab. Not only the decoupling has achieved good results, but also the performance of the control system has been greatly improved. All the above study are based on a 1000MW power unit.