bluuebunny/crossref_metadata_2025 huggingface dataset:
A New Method of Neurofuzzy Network Based on Variable Precision Rough
Authors: Hong Peng , Cong Wang
Published: November 2010

In view of the current application deficiency of neuro-fuzzy network, a new optimal method of neurofuzzy network based on variable precision rough set is presented and its application in complex systems modeling is discussed. This method takes the β classification accuracy of variable precision rough set theory as information function to select the condition attribute, and then modeling data are discredited through selecting a proper precision to forms a decision table. Finally, the significant attributes and the key attribute values are extract from the decision table by using reduction algorithm based on variable precision, and are map pad into the fuzzy rules.It simplifies the fuzzy rules and therefore optimize the structure of neuro- fuzzy network effectively, reducing the training time of neural network greatly and improving the precision of training. This method has been applied to the modeling of non-linear time-delay system with a large number of sam-pling data, the validity and feasibility of this method is demonstrated by an example of modeling.
Distributed Lifetime Optimized Routing Algorithm for Wireless Sensor Networks
Authors: Chen You Rong , Yu Li , Dong Qi Fen , Hong Zhen
Published: November 2010

The network hub nodes consumed excessive energy and failed prematurely, thus it reduced the network lifetime. In order to solve the problem, distributed lifetime optimized routing algorithm (DLOR) for wireless sensor networks was proposed. Energy for transmitting data and neighbor node residual energy were considered comprehensively. Then new weight function was introduced and distributed asynchronous Bellman-Ford algorithm was also used to construct the shortest routing tree. Finally, data were gathered along the shortest routing tree to sink node. Simulation results show that DLOR algorithm can extend network lifetime and enable cost-effective energy consumption. Under certain conditions, DLOR algorithm outperforms PEDAP, GreedyDijkstra, LET, Ratio-w and Sum-w algorithms.
A Communication Framework for WSN Based Data Collection Applications
Authors: Zhang Shu Qin , Cui Yan , Dong Zhi Yong , Dong Yue Jun
Published: November 2010

Wireless sensor networks (WSNs) have emerged as an effective solution for some data collection situations. However, owing to combining massively distributed data processing on embedded devices with ad-hoc communication over the wireless medium, WSNs are a challenging domain for application development. In this paper, a communication framework for data collection applications is presented. It provides an adaptive data transport protocol, multi-application running environment, nodes binding mechanisms, which facilitate the development of application systems, and reduces the cost of design and maintain.
An Analysis of Enterprise Investment Decision Based on Cournot-Nash Equilibrium
Authors: Chai Hua Qi , Song De Qiang , Luo Shu Juan
Published: November 2010

Cournot-Nash equilibrium is introduced into the traditional options game model, and the manifestation of this model under the condition is studied. Besides, a numerical method is used for solving investment values and thresholds of the leader enterprise and the follower enterprise. The results showed that both enterprises still have determined investment thresholds under Cournot-Nash equilibrium. In contrast, the follower enterprise investment threshold has a higher sensitivity to its own factors, but its present investment value is less subject to its own threshold and market demand; the leader enterprise performs contrary to the follower. Comparative advantages of marginal operating costs and investment sunk costs determine enterprise roles.
Design of Image Acquisition System Based on FPGA
Authors: Yan Gao , Yan He
Published: November 2010

A viable real-time image acquisition system was introduced in this paper. The EP2C35F6728C8 was usesd in this system as the core processor. By using the VHDL language and giving a simulation effect in the circumstances of QUARTUS, the collection and cache of original image was completed in the system, which could ensure the continuity and integrity of the image data. With a simple external interface circuit, it is very convenient for people to use and transplant this system. What’s more, it is also highlighted for its lower power consumption and higher speed. Thus it can be widely used in video surveillance and other fields.
The Image Encryption Scheme Based on the Generalized First-Order Directional Derivative Transformation
Authors: Li Zong Ying
Published: November 2010

In order to improve the capability of scrambling encryption and anti-aggressive, we extended the two-dimensional Arnold transformation to three-dimensional, and designed one kind of new diffusion equation of the digital image pixel gray value, then introduced a novel digital image encryption algorithm based on them. The large number of simulation results and analysis have both shown that the proposed scheme is a very effective encryption algorithm.
Intuitive Visualization for Online Image Retrieval
Authors: Wang Xue Li , Wang Da Qian
Published: November 2010

We proposed a efficient and intuitive method to show the Online image retrieval result for searching information. The method incorporates visualization techniques in content-based image retrieval to show the hidden information in the result. We incorporated image browsing into online image retrieval. We give users a initial display based on PageRank, then use the users’ feedback to compute similarity function, then we compute the dissimilarity between images, get the position of images in the display space. If users are not satisfied with the display, they may feed back some more interested images to the system to improve the display. With the interactions provided by the system, users can browse a large number of images efficiently and find the exact images fast.
Image Denoising Based on Reaction-Diffusion Equation and Curvelet Transform
Authors: Song Yi Mei , Shang Xiao Qing
Published: November 2010

To reduce the pseudo-Gibbs effects and the “curvelet like” aliased curves resulted from using curvelet transform for image denoising, we proposed a noise removal method which combines computational harmonic analysis and variation. Firstly, we presented a nonlinear reaction-diffusion digital filter based on Nordström energy functional. For effectively overcoming speckle noise due to the reaction-diffusion process of digital filtering and the ill-posed of diffusion coefficient, we gave an improved model by introducing curvelet smoothing operator and the new diffusion function. Numerical results show that the model is not only for images with Gaussian noise, Salt&pepper noise or Speckle noise, but also suitable for mixed noise, the denoised image has higher PSNR and good visual effect.
Image Optimization Algorithm Based on Salient Region and Layout Adjustment
Authors: Hua Zhen , Li Ye Wei , Li Jin Jiang
Published: November 2010

The purpose of image optimization is that the salient region of image is stand out, and is layout an image met the demand. The existed image optimization method is summarized, and their advantages and disadvantages respectively analyzed. The improved visual attention model is described, and is used to detect the salient region of image. The parameters of image optimization are calculated by the optimization function of image layout rules. At last, the weights of the images optimized parameters are adjusted by the image layout and adjustment function based on image optimized parameters, to achieve image layout and obtain the most optimal image, to realize image optimization. Experimental results validate that this methods not only achieve image optimization, but also accurately and automatically achieve to shorten distance and enlarge salient regions, improve the quality of the image optimization, and has good robustness.
Image Segmentation of Eggplants in Growing Environment Based on Improved BP Neural Network
Authors: Song Jian
Published: November 2010

Aim at the complex background of eggplant image in the growing environment, a image segmentation method based on BP neural network was put forward. The EXG gray values of 3×3 neighborhood pixels were obtained as image features through by analyzing the eggplant image. 30 eggplant images were taken as training samples and results of manual segmentation images by Photoshop were regarded as teacher signals. The improved BP algorithm was used to train the parameter of the neural network. The effective parameter was achieved after 120 times of training. The result of this experiment showed that the eggplant fruit could be preferably segmented from the background by using BP neural network algorithm and it could totally meet the demands of the picking robots after further processing by way of combining mathematics morphology with median filtering.
Gas Mixture Recognition Method with New Hybrid Architecture
Authors: Zhang Shuang Yan , Yu Jun , Wei Guang Fen , Tang Zhen An , Chen Yi , Cui Yuan Hui
Published: November 2010

The quantification accuracy of the gas mixture recognizing is greatly dependent on the gas sensor array signal processing method. The paper reports the new hybrid architecture with two main stages for gas mixture recognition. The first stage combine the principal component analysis (PCA) and back propagation neural network (BPNN) to qualitative identify the gas mixture, and the second stage composed of the independent component analysis (ICA) and BP sub networks to quantify the gas concentrations. The hybrid architecture and three other commonly used methods of PCA+BPNN, ICA+BPNN, and ICA+BP sub networks were respectively applied in binary gas mixture quantification based on the same gas sensor array, and results show that the hybrid architecture has the lowest quantitative recognition errors and fast converge speed comparing with the other methods.
Design and Analysis for the Lift Oil Cylinder Support of Float Support Structure Based on One-Dimensional Emulation and Explicit Dynamics
Authors: Yang Chun Hui , Luo Wei Dong , Zhang Wen Ming , Yang Jue
Published: November 2010

According to design ideas of the frame of the 170 tons dump truck, and allaying effects on the frame carling from the lift oil cylinder support (LOCS), the lift oil cylinder support of float support structure (LOCSFSS) is designed by optimization technology. Then, hydraulic pressure lifting system is emulated by one-dimensional emulation, and the load curve is gotten during lifting. Based on the load curve, LOCSFSS and the frame carling are all analyzed by explicit dynamics. Afterward, contrasts and analysis are done among float support structure and the other two traditional structures of jointing on bottom steel board structure (JBSBS) and carling structure (CS). Results of that indicate LOCSFSS is obviously better than the other two structures.
Finite Element Simulation and Design of Bridge Superstructure against Ship Collision
Authors: He Zhi Yong , Yang Xiu Long
Published: November 2010

Bridge in the upper structure of ship collision navigation is typical of ship collision accident. In order to protect the bridge of the upper structure, The design adopt high frame which is fabricated according to the protection devices of elastic-plastic deformation to absorb the hull kinetic energy. Using the general explicit dynamic analysis program LS-DYNA 9.7 for ship collision frame which is fabricated according to the numerical simulation, getting the section size, material properties and the ship speed of the protection devices and ship collision relations between influence. Analysis results could be the design and maintenance reference for the decision-making departments.
How to Improve Road Traffic Safety Management Greatly in China: Use a Systems Perspective of Safety
Authors: Ding Zhi Hua
Published: November 2010

Current management of road traffic safety is featured by lower efficiency and quality in China. The paper is intended to seek a possible solution for improving the management of road traffic safety by using the systems perspective of safety from Vision Zero for reference. The situation of the management of road traffic safety is described first. Compared with traditional ideas and epidemiology-based ideas on road traffic safety, the perspective is introduced. After that, it is used in analyzing the problems in current management of road traffic safety and looking for the countermeasures for them. Different from other studies in China, the paper highlights the introduction and application of the systems perspective of safety as the leading ideas in the field.
Practical Time-to-Go Estimation Based on Constant Relative Acceleration
Authors: Tian Hong Liang , Liang Xiao Geng , Jia Xiao Hong , Guo Xiao Nan
Published: November 2010

This paper addressed the problem of computing practical time-to-go estimation,when constant relative acceleration and measurement distribution were considered . firstly,a time-to-go arithmetic was obtained based on missile and target engagement geometry. The method is a combination of three time-to-go estimate formulations . Then time-to-go estimator was designed by applying the modified gain extended Kalman filter theory.Simulation results show that the proposed estimator can estimate the time-to-go very effectively . The proposed method is simple and straightforward to implement for missiles.
A Systematic Dynamics Risk Evaluation Model of Coalmine Production System
Authors: Ma Qian Jie , Wang Xiao Song , Zhang Yuan Yuan
Published: November 2010

The paper analyses hierarchical causality relationships of the coalmining systems; based on the causality loop of mining job quantity and quality, the sources of the risks of the systems, setup for the first time a dynamic risk evaluation model of the mining systems. It depicts that the principal causes for the mishaps in the coalmine is to chase an extra coal output while the quality of mining jobs remain insufficient. After successful running of the model in Vensim software under different scenarios, dataset of the occurrences of calamities due to variances of the quality of mining jobs are obtained and used to evaluate the degree of risks and safety of the coalmining system.
Effectiveness Evaluation of Security System Based on Entropy Theory
Authors: Dai Jing Jing , Hu Hui Min , Cai Qing
Published: November 2010

With the security industry developing rapidly and the number of security systems increasing continuously in recent years, security systems provide a positive effect on society security in China, but many of them became vulnerable or even useless because of the problem of irrational allocation of resources. In order to evaluate security system efficiency to avoid these problems, we present the concept of efficiency entropy based on the Shannon information theory, and build an Efficiency Entropy Evaluation Model which can be used to evaluate the efficiency of the security system quantitatively. It represents security system effectiveness in single node layer and the entire security network layers. So the effectiveness of the whole security system is calculated quantitatively.
Shotcrete Robot Simulation Tecnology Used to Solve the Problem Pitching Mechanism Underrun
Authors: Song Zhi An
Published: November 2010

As for the problem that pitching mechanism can not pitch up easily at the beginning since the shotcrete robot often work in the lower voltage situation, this paper theoretically analyzes the causes that voltage shortage brings on pitching mechanism pitching up underload and verifies the maximum load working position with ADAMS simulation analysis. In the design of shotcrete robot the pitch cylinder hydraulic drive system is improved and it proves good in its practice.
The Study on the Infrared Thermal Radiation Response of Y1Ba2Cu3O7-X Semiconducting Film
Authors: De Sun
Published: November 2010

Y1Ba2Cu3O7-x semiconducting thin films with different buffer have been manufactured by direct current magnetic sputtering and annealing method, and their infrared thermal radialization respond have been studied. The microstructure of Y1Ba2Cu3O7-x film is analyzed by XRD and Raman spectrum. The electronic resistance temperature coefficient value and hall effect of Y1Ba2Cu3O7-x film are measured. The results show that the uniformity of the semiconducting Y1Ba2Cu3O7-x thin film which have buffer layer is better and their Signal-to-Noise is higher. It is believed that the Y1Ba2Cu3O7-x not only have good speciality for its thermal radiation respond in infrared band but also have good performance in sub-millimeter band. It will act as new sensor elements of infrared bolometer working at room temperature.
General Expression Forms on the Fuzziness Degree of Fuzzy Operator
Authors: Liu Zhao Jun
Published: November 2010

In order to study fuzziness degree's quantity measure as to fuzzy operator, using fuzzy set theory, the problem of general expressions on fuzziness degree as to fuzzy operator has been studied, a series of theorems and formulas about which have been given. These formulas have a special foundation function in fuzzy information processing, such as the fuzzy pattern recognition, the fuzzy reasoning, and the fuzzy artificial intelligence. The great theory supports have been supplied to computer's fuzzy information processing.
The Problem of Non-Smooth Solutions for a Type of Parabolic Complex Equations
Authors: Xu Guang Shan , Ma Zhong Tai
Published: November 2010

In this paper, the problem of non-smooth properties for a type of general second order parabolic type equation is discussed and the result-------there are C∞-functions f for which we consider the equation that has no C2-solutions is proved by using a method of function construction, moreover, the dependent relations between the solution u and the diffusion term f is given.
Research about Relation of Working Ways and R&D Management Effected by Technology Innovation
Authors: Xia Gao
Published: November 2010

In the face of increasing impact of technological innovation on the R&D way is managed and organized, there is a notable lack of research on the mechanisms of such change. The paper links insights from IT and organizational literature on the study of information and communication technology innovations in organizations with R&D Management research deriving three main suggestions for new research approaches: Firstly, the epistemological positioning of the research should take into account the dynamic structure or co-evolution between technology, ways of working and organizational change; secondly, the object of analysis should be structured “vertically” with multi-level analysis of technology, working routines, project processes and organizational aspects. These levels of analysis should thirdly be organized around experiments for the study of innovation. The arguments are illustrated through a case study for a research design that can potentially contribute to understanding the relationship between technological innovation and changes in R&D management..
Realtime Visualization of Hurricane in Distributed Environment
Authors: Wang Shao Rong , You Rui , Li Sheng , Chen Yi Song , Wang Guo Ping
Published: November 2010

Hurricane visualization is very import to the study of hurricane. In this paper, a particle based hurricane visualization method is introduced under distributed environments. By controlling the generation of the particles, only a few particles are used to expose the hurricane feature. A multi-resolution progressive transmission on network is adapted as the visualization module in the context of our distributed system.
Research of Cross Platform Embedded Database Based on the SOC Technology
Authors: Xiong Jing , Wen Han Yun , Bai Kai
Published: November 2010

At present, the existing embedded database products have high degree of specialization and dependencies of platform, not fully reflect the characteristics of embedded system. This paper provides a requirement analysis and gives a completely different from the traditional design of the database, the paper has done a lot of research in some key technologies on the design and implementation of SOC technology, this design is always used in cross platform embedded database. The SOC technology embedded in a database system in the special chip to solve problems of platform portability.
Theoretical and Experimental Study on the Surface Roughness of Quenched Steel in Ultrasonic Turning with PCBN Tool
Authors: Jiao Feng , Jian Jin Hui , Liu Xiang
Published: November 2010

Surface roughness is an important evaluation index of the machined surface quality. The ultrasonic turning mechanism was described in detail and the mechanism reducing surface roughness in ultrasonic vibration turning was obtained in this paper. Meanwhile, ultrasonic turning experiments were carried out to verify the theoretical analysis. Theoretical and experimental research results show that machined surface roughness of quenched steel in ultrasonic turning is very close to geometric surface roughness, resulting in smaller surface roughness than that in ordinary turning.
Strain Intensity of the Roller Parts under Cyclical Deflection and Cyclical Plastic Deformation
Authors: Wang Zhen Cheng , Liu Ai Rong , Wang Xin
Published: November 2010

The paper discussed the elastic and plastic analysis method should be applied to the heavy load roller parts used in pellet presses instead of the calculation method of a first deformation in order to solve the problem of the strain intensity under cyclical deformation and analyzed the theory and calculation steps, gave relationship table of to of Generalized maximum strain and 、 to in different strain ranges so as to be easier to calculate for engineers.
Multidisciplinary Design Optimization of a Lunar Lander’s Soft-Landing Gear
Authors: Lu Yun Tong , Wang Chun Jie , Li Ang , Wang Han
Published: November 2010

The rapid development of Multidisciplinary Design Optimization (MDO) approach can simultaneously guarantee the cut of cost on design and optimal performance of spacecraft. Based on the theory of Collaborative Optimization approach (CO) of MDO, present paper proposes the method of CO by integrating Pro/E(3D modeling), Patran/Nastran(FEM analysis) and ADAMS(multi-body dynamic analysis) with the Isight software. In the analysis of the soft-landing gear of Lunar Lander, this method can optimize the mass of the landing gear and meanwhile ensures the reliability of structure statics, structure dynamics and multi-body dynamics. Thus the feasibility, applied value and guideline significance of this method in spacecraft structural design are proven.
The Influence of Rotor Bar Wear of Impact Crusher on Impact Effect
Authors: Cao Shu Juan , Zhang Hai , Li Sen
Published: November 2010

The influence of the wear of the rotor bar on its impact effect was investigated with FEM simulation. The effectiveness of FEM simulation on the research of impact force was verified through the comparison of experiment and simulation data. Simulation results showed that the wear of rotor bar has not so large influence on impact force. In its initial stage, the bar is worn easily, and the wear becomes slow with the wear increasing.
Reliability Analysis of Deployment Mechanism of Solar Arrays
Authors: Wu Hong Chun , Wang Chun Jie , Liu Peng
Published: November 2010

This paper contraposed the reliability analysis of deployment mechanism of solar arrays. First, the configuration and function of solar arrays were described briefly. According to the deploying principle of mechanism, the model of the reliability was established in order to make the calculation and analysis of structural reliability. There was some propose to improve the reliability of the system according to the weakness from the analysis. Secondly, from two aspects of static torque margin and torque, the motor function reliability analysis of deployment mechanism of solar arrays was developed
Research on Mechanism of Ultrasonic Assisted Creep Feed Grinding Ceramic Blade Surface
Authors: Zheng Jian Xin
Published: November 2010

Technology of NC-contour evolution ultrasonic assisted creep feed grinding (NC-CEUACFG) blade surface was put forward to solve the difficult problem of machining ceramic blade surface. The static load on the grinding wheel and the influence of the rigidity of the grinding wheel on the surface precision were studied combined with the movement analysis between the blade and grinding wheel in the process of NC-CEUACFG ceramic blade surface, and the physical model of static load may explain the decrease of grinding force and increase of the relative rigidity of the grinding wheel in NC-CEUACFG in theory. The primary experiment of NC-CEUACFG blade surface was carried out according to the experimental results of previous optimized process parameters, and the integral impeller was machined directly in the blank material of Al2O3 ceramic, which indicated the application prospect of such technology.
Experimental Research on Ultrasonic Assisted Pulse Electrochemical Compound Finishing for Hard and Brittle Metal
Authors: Zhang Cheng Guang , Yang Xue Ling , Zhao Bo
Published: November 2010

The experiment of ultrasonic assisted pulse electrochemical compound finishing is carried in this paper. The machining principle of the compound finishing is discussed in this paper. Processing experiments of compound finishing are carried out to study the effects of the main processing para- meters, including the particle size, the ultrasonic vibration amplitude, the minimum gap between the tool head and workpiece and the pulse voltage, on the material removal rate and the surface quality for hard and brittle metal materials. The curves of the corresponding relationships are also obtained. The study indicates that the processing velocity, machining accuracy and surface quality can be improved under the compound finishing, obtaining the processing technology conductions of the compound finishing. Introductions
Static Analysis on Slewing Bearing with Negative Clearance Based on ANSYS
Authors: Qiu Ming , Yan Jia Fei , Chen Long , Zhao Bin Hai
Published: November 2010

Based on the FEM and the relative software ANSYS, the analysis of slewing bearings with negative clearance was presented. In this paper, the stress distribution of slewing bearings under condition of different loads has been studied. The clearance has been changed by altering the ball diameter, thus the relationship between the contact stress of the inner/outer raceway and balls and the clearance has been received. Subsequently, compared to the calculation results based on some theoretical models from others, the reliability of the FEM can be verified
System Design of Cam Mechanism Based on Fellower Structure and General Kinematic Laws
Authors: Wang Liang Wen , Li An Sheng , Zhang Duan Qin , Tang Wei Gang
Published: November 2010

According to the different fellower structure and general simple trapezoid motion law of cam mechanism, this paper established a mathematic model for the motion of fellower structure of cam mechanism. The design method of motion law of the fellower structure was introduced, and the law of motion transition of fellower system and the related issues with program design were studied. A design system was developed using VB code based fellower structure and general motion laws. And the system could solve the curve of motion law for the fellower system and the eigenvalue of the curve, and finally realize parametric design of motion law for the fellower structure of cam mechanism. And the system could calculate and output the coordinate of cam configuration, and improve the digitized design process of cam parametric. The interface of the designed system is friendly and convenient, and the system could be used in both engineering and teaching.
Surface Modification of Polypropylene Melt Blown Non-Woven Using Atmospheric Pressure Dielectric Barrier Discharge Plasma
Authors: Zhang Yan , Lv Yin Ding
Published: November 2010

In this paper, polypropylene (PP) melt blown non-woven fabric is treated by atmospheric pressure N2 or N2/CO2 dielectric barrier discharge (DBD) plasma. The variation of the surface hydrophilicity of PP sample is experimentally investigated by surface water contact angle, Fourier transform infrared reflectance spectroscopy (FTIR-ATR). The results show that the hydrophilicity of PP sample is considerably improved as long as the very short plasma treatment time (several seconds). However, the treatment effect of atmospheric N2/CO2 plasma is worse than that of atmospheric N2 plasma.
Developing History of Water Hydraulic Technology and its Application in Coal Mine Production
Authors: Zhu Jian An , Guo Pei Hong
Published: November 2010

Water hydraulic technology, an ideal green technology, attracts great attention in the field of power transmission & control technology. In this technology, natural water or sea water is used to replace mineral oil as working fluid in hydraulic circuits, with the great advantages of fireproofing, environment protection, safety, and with lower price. The paper introduces the changing process of the working fluid between water and the mineral oil after a brief review of the development of hydraulic technology, summarizes the achievements in the research of water hydraulic technology in China and other countries, analyzes the current technological problems such as friction and wear in components and the vibration noise in hydraulic systems, and it also discusses the application and prospect of the water hydraulic technology in the coal mine production systems, such as hydraulic support, gas drainage, and so on.
Load Bearing Capacity of Oil Film Bearing Research
Authors: Fan Hong Chao , Tong Jing Lin , Yi Xin Hua , He Jin Bao , Yang Jian Xi
Published: November 2010

The oil film have many excellences such as bigger load bearing capacity, longer life, wider velocity range, lower friction etc. The traditional design method is experience test. Even the design parameters could meet the application requirements, but they can not exert the best performance of the oil film bearing. The relationship between load bearing capacity and materials, lubricants, design parameters and structural characteristics of oil film bearing was analysed. To improve the load capacity and run at the optimal state, the objective function was built to optimize the main parameters. Optimization results showed that the load bearing capacity has been greatly improved.
A CPD-Ontology Built in IDEF5 for Product Development
Authors: Lv Kun , Zeng Qing Liang
Published: November 2010

Product development is a concurrent process, which tends to be of such features as collaborative, distributed (web-based), interactive, and knowledge-intensive. Because the participants to work on a project come from different backgrounds, they will difficult to interact and understand one another. Ontology is a common language to model domain knowledge and makes the communication between people and the interoperability between systems easier. In this paper a CPD-ontology is built in IDEF5 to capture the knowledge about collaborative product development (CPD), then to serve as a foundation of knowledge management in the process of CPD.
Development of Pile-Extractor Machine of Water Jet
Authors: Wu Lin Feng , Yin Xiao Chun , Geng Ming Quan
Published: November 2010

A Pile-Extractor machine was developed based on the theory of water jet,which was applied in small gravel,sand and soft soil.It consists of four parts:Pile-Extractor component,water-supply system,suspender structure and crane.The experimental results show that it took fifteen minutes all so to extract one precast concrete pipe pile of 15 meters long and 0.5m in diameter.
Change of Plastic Hinge Position in Radial Ring Rolling without Guide-Roll
Authors: Hao Yong Xing , Shi Su Juan , Yang Lv Yun , Yang Song Wei
Published: November 2010

Radial ring rolling is an unsteady plastic deformation process. Internal stress of the ring is foundation of formation of the plastic hinge. The radial wall thickness of ring changes gradually along ring circumferential direction. Theoretical analysis and FE simulation show that: the plastic hinge is not always exactly opposite to the rolling deformation zone in ring rolling process without guide-roll. The plastic hinge position angle β0 is affected by ratio of rolling entrance wall thickness H0 and rate of wall thickness change η. Curve of β0-H0/η is shaped as double U staggered relative to each other. With the H0/η increasing, β0 reduces gradually and approaches to π in the range of H0/η>6.28. H0/η>14.6H0/R2. Only when the rolling process is steady, and H0≈R2, β0 is greater than π, and approximates to π. The β0 fluctuates dramatically when H0/η≈5.71. In some cases, H0/η may fluctuate in 0 to 6.28, leading to the instability of plastic hinge position.
Research on Grinding Temperature of Nano ZrO2 Ceramics Using Diamond Grinding Wheel Dressed by Elliptic Ultrasonic Vibration
Authors: Xue Jin Xue , Zhao Bo
Published: November 2010

In order to investigate the influence of dressing methods on grinding temperature, two kinds of diamond grinding wheels dressed by traditional dressing(TD) and elliptic ultrasonic vibration dressing(ED) respectively were used to grind the same nano-ceramic material. Through grinding experiments, the comparative analysis of the grinding temperature was conducted. The results show that diamond grinding wheel dressed by elliptical ultrasonic vibration method can decrease the grinding temperature.
Research on the Characteristics of Data Transmission of Wireless Network
Authors: Liu Jun Li , Wang Hua , Yan Yan Yan
Published: November 2010

The paper discusses the application of the wireless data transmission in the industrial control system and analyses the characteristics of the data transmission. It gives the different characteristics of data transmission in the four experiments with the Zigbee Protocol. By comparing the result of the wireless network-path loss model and experiments, it shows that the path loss, multiple-point jamming, communication barrier primarily affect the stability of data transmission.
The Process Study on Laser Heat Treatment for CNC Machine Tool Guide
Authors: Su Hua Li , Miao Xiao Peng , Zhang Yong
Published: November 2010

With the continuous development of CNC technology, CNC machine tools run at the higher speed. Cutting force will be greater, which is bound to exacerbate the wear and tear of the machine tool guides. Therefore, new requirements of numerical control machine tool guide surface hardness are proposed. Using Laser surface heat treatment process to scan the guide surface of CNC Machine Tool, the guide can get high hardness hardened layer. After being casted iron HT300 was heat treated by the laser, the microstructure is homogeneous, very fine martensite. Its Surface hardness can get to HV832. The treatment enhances the surface abrasion resistance, scratch-resistant capacity.
Research on Dynamic Measurement of the Residual Stress in Thick Pre-Stretched Aluminum Plate 7075T7351
Authors: Dong Zhao Wei , Wan Xiao Hang , Liu Sheng Yong
Published: November 2010

The distribution of residual stress in thick pre-stretched aluminum plate needs to be accurately measured in order to control the machining distortion. In the measuring process, the dynamic resistance strain instrument was used to accurately measure the releasing process of stress and collect the strain changes data with the time changing. Not only the status and the distribution of 3D residual stress, but also the releasing velocity trend of 3D residual stress are obtained, which is very significant in engineering.
Study on Surface Quality of Al/SiCp Composites with Ultrasonic Vibration High Speed Milling
Authors: Xiang Dao Hui , Zhi Xin Tao , Yue Guang Xi , Gao Guo Fu , Zhao Bo
Published: November 2010

Al/SiCp composites with excellent physical and mechanical properties are applied widely in the aerospace, automotive, national defense, electronics and other fields. High content and high hardness SiC particles lead to poor machinability and that further application is restricted. Surface microstructure and surface formation mechanism of Al/SiCp composites were studied under condition of ultrasonic vibration milling and conventional milling. The experimental results show that machined surface had the same defects, but SiC particles were mainly direct sheared in ultrasonic milling different from the conventional milling, the roughness (Ra) of the surface generated in the ultrasonic vibration milling was smaller. At last, the formation mechanism of surface topography in the ultrasonic milling was analyzed. The research indicated that ultrasonic milling could obtain better surface quality than conventional milling and with high efficient.
Model Analysis of Disk Spring Based on ANSYS
Authors: Li Wen Xing , Wang Xiao Bo , Sun Li Min
Published: November 2010

The modes of a piece of disk spring and two piece of congruent disk spring are calculated by the finite element software ANSYS. Natural frequencies and vibration mode of every step are obtained. The results are analyzed. As a result, some useful references for design of disk spring are provided.
Practical Optimization Algorithm for Discrete Variables
Authors: Wang De Sheng , Zhou Ai Ping
Published: November 2010

In order to solve the optimization problems of discrete variable in mechanism design, beginning vertexes to meet all of performance restriction conditions can be given by the technician from upper boundary of design variables by means of man-machine interactive method. Objective function of each beginning vertex is calculated and arranged from small to large, the vertex of maximum and minimum of objective function are found. The difference between the vertex of minimum and maximum of objective function are calculated and new point is made up from the minimum point and the difference. The new point is used in stead of the vertex of the maximum objective function if the objective function of the new point is less than the maximum of beginning vertexes. The new composite figure is made up again and the new point is calculated until all design variables reach to under boundary. Then the vertex of minimum objective function is regarded to as the optimization point. This method is very fit for the optimization of discrete variables of low dimension and is higher calculation efficiency because the hominine brightness is combined with the high speed calculation ability.
Logarithmic Spiral and its Application to the Design of the Relieving Shaped Milling Cutter
Authors: Xu Xing Xin , Zhang Xiao Hui , Zheng You Yi
Published: November 2010

From the definition of logarithmic spiral and its particular characteristics, logarithmic spiral is discussed and adopted as the tooth back curve of the relieving shaped milling cutter under the new manufacturing conditions. Thus, the relief angle of each point on the cutting edge keeps instant after regrinding the cutter and thereby makes for preserving the machinability stability. Besides, cutter structure parameters determine coefficient values in the equation of logarithmic spiral tooth back curve. Based on the objected-oriented thought, a CAD system for the relieving shaped milling cutter with logarithmic spiral tooth back is developed in virtue of the language of VBA embedded in AutoCAD, which achieves the automatic generation of logarithmic spiral, realizes the cutter parametric design, shortens the whole cycle and improves the design quality.
Automatic Monitoring System of Centrifugal Fan Performance
Authors: Gao Bing Guang , Li Hai Xia , Wen Xia Ping , Wang Fa Hui
Published: November 2010

The centrifugal fan performance experiment system was introduced. The structure, function, measuring principle of the system is analyzed. The experimental system consists of centrifugal fan, air hose, computer and test software. The experiment system can automatically measure and process centrifugal fan performance parameters. The distribution of gas velocity at fan outlet can be measured by five hole probe device.
Study on the Stress Field in Ultrasonic Grinding Engineering Ceramics
Authors: Wang Xiao Bo , Gao Hui Qin , Gao Guo Fu
Published: November 2010

The mechanical model of stress field was established in grinding with/without ultrasonic vibration assistance, based on indentation fracture mechanics. Compared with the stress field in conventional grinding, the research has shown that the grinding stress field changes periodically with the vibration process of the moving grains in ultrasonic grinding. In a vibration cycle, the grains interfere with the workpiece within the time of T+Δt and cut off the material from the workpiece surface. Meantime, the large impact force between the grinding wheel and the workpiece results in stress field on the ground surface. In other period of vibration cycle, the grains are detached from the workpiece surface, and there exists no interaction between them. The grinding force disappears, so does the grinding stress field.
Study on Real-Time Image Capture Method for Apple Sorting System
Authors: Li Jing , Wang Bo , Zhang Dong Xing , Liu Bao
Published: November 2010

An inspection & sorting system of apple external quality has been developed according to the procedure of orientation first and image information capture followed. The system includes an orientation and conveyer set, a computer, a camera, a positioning sensor and apple image capturing and processing software. The orientation and conveyer set were used to realize the function of apple orientation while moving, and make different diameter apples rolling at the same revolution on rollers, so that more information and more accurate sorting results could be gotten. The mechanism adopts two cameras for apple image capture and apple quality will be inspected according to its one direct picture and four side pictures. The positioning sensor is used to inspect apple position and trigger the image capture card in time. The processing of images were carried out under Visual C++6.0 circumstance
Study of Pressure Sensitive Coating Using Palladium Octaethylporphyrin as Luminescent Molecule
Authors: Cao Xian Long , Deng Hong Da , Lan Wei
Published: November 2010

Pressure sensitive paint (PSP) has become a useful tool to measure the surface pressure distribution of aerodynamic components replacing conventional pressure taps. For the PSP technique based on the luminescence quenching by oxygen, improvement of its sensitivity is important. In this study, we synthesized palladium octaethylporphyrin (PdOEP) as luminophor and embeded PdOEP in polydimethylsiloxane (PDMS) as polymeric binder to make up of pressure sensitive paints. We used UV/Vis spectrometer and spectrofluorimeter to study the absorption and phosphorescence spectra of PdOEP. In addition, by our self-made experimental setup, the sensitivity of PSPs were examined especially in the range of pressure below 150 Pa. As a result, it is clarified that the PSP using PdOEP as a luminophore and using PDMS as a binder has very high sensitivity to oxygen pressure in low pressure conditions below 150 Pa.
Comparison of Pullout Behaviour on Sand between Planer Grid Forms and Grid with Rib of Reinforcement
Authors: Lin Yong Liang , Zhang Meng Xi , Cai Chun
Published: November 2010

In conventional reinforced soil structures, the reinforcements are often laid horizontally in the soil. In this paper, a new concept of grid reinforcement with ribbed inclusions is proposed. In the proposed of soil reinforcement, besides conventional grid reinforcements, some vertical and 3D reinforcing rib are also placed in the soil. Pullout tests are necessary in order to study the interaction behavior between soil and geosynthetics in the anchorage zone. Then, a series of pullout tests are conducted and the various parameters studied in this testing program include rib height and grid size of reinforcement. The result shows that the ultimate pullout force of plexiglass with rib is significantly larger than ordinary ones in the same normal stress. Ultimate pullout resistance increased as the increase of the height of tooth, and also is significantly impacted by grid size.
Design and Optimize Spherical Particle Absorber for Broadband Electromagnetic Wave Absorption Wall
Authors: Tang Zhang Hong , Qun Wang
Published: November 2010

In this paper, a method to simulate the absorbing effectiveness of spherical particle absorber is presented and the effect of the diameter of spheres, the number of layer and the stack modes of sphere particle to the absorbing effectiveness were also researched. Basing on the simulation results, an optimal spherical particle absorber was designed. The absorber has 3 layers with 1 mm, 2 mm and 4 mm spheres stacked on each layer respectively. Simulation result shows that the optimal absorber achieves a maximum reflection loss of -15 dB and the bandwidth being lower than -5 dB is more than 16 GHz in 1~18 GHz.
Amphetamine Detection Based on Surface Plasmon Resonance Techniques
Authors: Bao Yu , Li Bo , Guan Yi Ran , Yang Gui Fu
Published: November 2010

This paper introduced a new method for detection of amphetamine based on the Surface Plasmon Resonance (SPR) techniques. Experimental results show that SPR is approved to be a suitable approach for detection of amphetamine due to its unique properties such as label-free, real-time, high sensitivity, etc. By introducing such a SPR detection, 10μg/ml amphetamine could be easily detected and compounds with similar molecular structure are also expected suitable for SPR detection.
The Effect of Temperature and Oxide Concentration of Galena Oxidation
Authors: Jia Qing Mei , Yan Shao Hong , Bing Cao
Published: November 2010

The article uses ferric sulfate as oxidant, and makes Galena oxidation test in the oxidation of different concentrations of medium, when pH is 2, and temperature is 50oC and 25oC. It analyzes the effects of the rate of Galena oxidation from temperature and oxidation of medium concentrations. In the conditions of 50oC, Fe2(SO4)3 as an oxidant, the solution concentration of 100mg / l, the reaction is quick. When the higher the concentration of solution, the higher the solution concentration of sulfate ions, the easier it is generated PbSO4 precipitation, impeding the reaction. In 25oC, the reaction is very slow or even not to.
Improved Iterative Methods for Solving High Order Polynomial Equations
Authors: Gong Dian Xuan , Wang Ling , Wei Chuan An , Peng Ya Mian
Published: November 2010

Many calculations in engineering and scientific computation can summarized to the problem of solving a polynomial equation. Based on Sturm theorem, an adaptive algorithm for real root isolation is shown. This algorithm will firstly find the isolate interval for all the real roots rapidly. And then approximate the real roots by subdividing the isolate intervals and extracting subintervals each of which contains one real root. This method overcomes all the shortcomings of dichotomy method and iterative method. It doesn’t need to compute derivative values, no need to worry about the initial points, and could find all the real roots out parallelly.
The Study of the Factors to Establishing an Online Environment for Negotiation
Authors: He Wen Xiao , Qu Jing Guo , Cui Yu Huan
Published: November 2010

Using technology, cooperation among peoples, lawyers are very special, it is rare. We believe that these two professionals working closely together in the field of ODR are essential. The co-operation we have in mind exists in drafting legal principles and technical requirements to develop and eventually implement an online negotiation environment. The online environment should different from other online negotiation environments in that the legal principles and technical requirements, on which the environment will be based, are developed in close cooperation and therefore fully adjusted to each other.