bluuebunny/crossref_metadata_2025 huggingface dataset:
Formulate Neighborhood for Multi-Relational Data by Cell Accumulating
Authors: Ling Ping , Yang Qiang , You Xiang Yang
Published: January 2011

This paper presents an algorithm to develop neighborhood, and the first time applies it into multi-relational (MR) data. The proposed algorithm is inspired by the idea of Locality Sensitiveness Hashing, whose idea is cell accumulating. The heuristics of parameterization are given, which are customized to MR data. Experiments demonstrate the proposed method behaves better than its peers on both MR data and common data.
Study on Material Stacking Image Based on Machine Vision
Authors: Li Chang Chun , Zhang Tian Hou , Liu Hua Guan , Yu Jing , Wang Shi Feng
Published: January 2011

Combining materials handling and stacking operations, this paper takes the fertilizer bags as the object and studies on the image processing method of the material stacking and segments the stacking image. Using binocular vision technology generates stacking depth image, and the depth data is extracted. It can provide a theoretical basis for the robot to realize the automatic recognition of material stacking.
Mutual Information Model of Adaptive Waveform Design
Authors: Wang Bin , Wang Jin Kuan , Song Xin
Published: January 2011

Traditional radar systems are lack of adaptivity to the environment. Modern radar systems should transmit different waveforms according to different environment. In this paper, mutual information model of adaptive waveform design is proposed. With this model, different waveforms can be designed adaptively under different radar working conditions. Simulation results demonstrate the validity of our model. Finally, the whole paper is summarized.
Using NMR to Forecast the Aptness for Freezing of Pork
Authors: Yu Xiao Ling , Li Xue Bin , Zhao Liang , Ma Han Jun , Zhou Guang Hong
Published: January 2011

NMR was used to investigate the chemical shift graphs of fresh pork at different time postmortem, and at the same time the ice crystals of meat freezing at different time postmortem were researched with SEM. The results showed there were significant (P＜0.05）correlation between distribution and size of ice crytals freezing at different time postmortem and the chemical shift graphs of fresh pork at different time postmortem different. Using chemical shift graphs of meat could forecast whether the meat was suitable for frozen processing, and also could forecast the water holding capacity of it.
Dynamic Load-Balance Strategy Based on Software Aging in Web Server Cluster System
Authors: Li Hao Ran , Guo Jun , Li Wei Yue , Zhang Bin , Wang Yun Sheng
Published: January 2011

Many studies reported that servers become aging after running a long time and the efficiency of server cluster system will degrade. This paper mainly focuses on modeling and analysis of dynamic load balance strategy adding software aging parameter into dynamic load balance strategy. Adding software aging into load balance strategy is proposed for the first time in this paper. A software aging algorithm based on robust locally weighted regression (Loess) is deployed to estimate aging trend and the threshold point used to compute software aging parameter. Experiments verify the effectiveness of the algorithm presented in this paper. The conclusions drawn from this paper will greatly benefit the application of software rejuvenation technique into load balance strategy, that is, it makes it easy to determine when to perform software rejuvenation in a server before it reaches the downtime. The results for the cluster system show that performance of the cluster can be effectively improved.
Problems in the Development of Chinese Modern Logistics Industry and Countermeasures for Settlement
Authors: Zhang Qing Hua
Published: January 2011

Taking some developed countries as comparative objects, the paper analyzed problems in the development of Chinese logistics industry, from development course, management level, techniques and equipments, service level, managerial system and mechanism, legal environment, and talents aspects. Referring the developed logistics mode of developed countries, the paper gives some advices to the future of Chinese logistics industry and logistics enterprise, including advices in terms of macrocosmic aspects and microcosmic aspects. The constant improvement of market mechanism, sustained growth of social economy, continuous perfection of laws, rules and regulations, and wide application of modern science and technology has created beneficial conditions for logistics development. As for logistics enterprises, it is extremely crucial for them to comprehensively consider various factors, and establish the logistics mode truly suitable for themselves. Therefore, the research on the countermeasures for the development of Chinese logistics enterprises has important theoretical and practical significances on promoting the scientific and healthy development of Chinese logistics industry.
The Countermeasures of E-Business Development for Chinese Travel Companies
Authors: Zhang Qing Hua
Published: January 2011

In recent years, Chinese travel companies have been following the tide of adopting e-business service. However, the development of e-business in the travel industry shall be in line with the times and occasions and travel companies shall take their actual situations into consideration. The paper carefully analyzes the strengths and weaknesses of developing e-business in Chinese tourism industry and thus put forward relevant countermeasures and trains of thought.
Experimental Investigation of Static Characteristics on Eddy Current Sensor for External Cylindrical Grinding Measurement System
Authors: Cao Yi , Sun Hong Ge , Zang Yi , Li Xiu Juan
Published: January 2011

In order to investigate the static characteristics of eddy current sensor (ECS) influenced by cylindrical diameter, material and displacement of the target workpiece, some experiments were carried out. Firstly, the theoretical principles of ECS were recalled for explaining the related parameters. The experiment setup was then introduced and some features including linearity, resolution and sensitivity were tested by the experimental instrument and calibrated. Finally, the experimental results were obtained and the influence elements were discussed in the paper.
Rapid Establishment of 3D Intricate Design Platform Based on Modular Technology by UG
Authors: Kuang Wei Hua , Li Fa Piao
Published: January 2011

In order to solve the problem of 3D intricate product design and mold development, an approach based on UG NX was proposed. The design platform and modular technology of UG MoldWizard were introduced. How to add and edit attributes of the standard part library was explained by using sankyo lifter as example. As an application, a lamp set and its injection mold were rapidly designed by UG MoldWizard. How to patch surfaces, define parting lines and how to extract mold core and mold cavity were illustrated step by step. It proved that UG MoldWizard efficiently promoted work and integrated complex elements of design technology into automated sequences.
Research on Stress and Strain in Isometric Polygonal Profile Connection Based on FEM
Authors: Lü Bao Zhan , Liu Kun
Published: January 2011

Because of the problem of key joint or spline joint, the isometric polygonal profile connection was put forward, and the mathematical model of isometric polygonal curve was analyzed in this paper. Based on the periodicity characteristics of equivalent effective stress and total displacement in the whole structure through preliminary analysis, 1/3 structure of isometric polygonal profile shaft and hub was adopted during geometry model being established. The shearing strength in isometric polygonal profile hub and shaft, the main stress in hub and the total strain in shaft were calculated and analyzed based FEM.
MMORPGs: The Perspective from Psychology
Authors: Ge Qian
Published: January 2011

Every day, millions of users interact, collaborate, and form relationships with each other through avatars in online environments known as Massively Multi-User Online Role-Playing Games (MMORPGs). These online environments offer tantalizing glimpses of how millions of avatars interact on a daily basis outside of a laboratory setting and what users derive from that experience. In this paper, the demographics, motivations, experiences among Chinese MMORPG Players will be presented, analyzed and discussed.
Study on Factors Affecting Urbanization in China with the Method of ANP
Authors: Sun Ping , Wang Chun Hui
Published: January 2011

Urbanization has been an increasing number of mentions. Urbanization is a double-edged sword that brings both opportunities and challenges to China, it is particularly significant to control the speed of urbanization. The study introduced ANP for analysis the factors affecting urbanization in China, an evaluation model was built when considering the feed back and the relations between those factors, index system was shown clearly.
Analysis of SINR for Unitary and Non-Unitary Precoded MIMO Systems
Authors: Lu Xin , Xu Xiong , Wang Jian Hu
Published: January 2011

Pre-coding type can be grouped into two approaches, unitary or non-unitary for 3GPP Long Term Evolution(LTE). Output SINR of unitary Pre-coding for MU-MIMO is investigated in this paper. A more simple method of calculation for SINR is presented, which Leads to the computational complexity down to 18% compared with original method, while calculating MIMO Pre-coding system with 4 matrices (i.e. 8 vectors). In addition, we also analyzed the loss of SINR when using unitary or non-unitary Pre-coding. Corresponding simulations show that output SINR of non-unitary pre-coding system is inferior to the unitary pre-coding case and such losses can been described using statistical linear approximation.
Study of the Input Variables for BP NN Based Supplier Evaluation Model
Authors: Chen Jian , Jiang Wen Rong , Wang An Bao
Published: January 2011

The development of the BP NN is part of the research project of internet based intelligent supplier selection and evaluation system. According to obtained information from Google Search Engine, the possible suppliers will be classified and put into the data file which is used for the further evaluation. In the paper the BP NN model used for supplied evaluation is introduced first, and then the six input variables have been discussed for the BP NN model. The raw data of each variable has to be converted into BP NN model accepted format for training and application. The conversion methods for each valuable have been discussed in the paper as well. Final, the test results show the successful system running.
Dynamic Distributed Information Security System Based on Multi-Agent
Authors: Wang Peng
Published: January 2011

With the growing population of using public network, network intrusion events happened more frequently. Aim to the drawbacks of traditional information security methods, the multi-agent system model was proved to be very promising. This paper proposes a dynamic distributed information security system based on multi-agent that dynamically integrates all distributed information security facilities to achieve efficiently collaborative information security. In order to validate this proposed approach, the authors give the material experiment test in the end of this paper. The final experiment result suggests that, this proposed approach is feasible, correct and valid.
Finite Element Analysis of Cold Expanding of Hollow Thin-Wall Tube
Authors: Kuang Wei Hua
Published: January 2011

The cold expanding diameter process was simulated by the software of DEFORM. The finite element model of tube and dies were built. The object position definition, the inter object setting, movement definition and simulation step were correctly set. The deformation, total velocity distribution and equivalent stress distribution were predicted. The numerical simulation results showed that the finite element analysis could exactly describe the plastic deformation and stress distribution during the forming process.
Analysis of Intrusion Detection System
Authors: Gu Yue Sheng , Feng Hong Yu , Wang Jian Ping
Published: January 2011

Intrusion detection system is an important device of information security. This article describes intrusion detection technology concepts, classifications and universal intrusion detection model, and analysis of the intrusion detection systems weaknesses and limitations. Finally, some directions for future research are addressed.
The Research of Exact Orthogonal Nonseparable Four-Variate Wavelet Pack Bases with Finite Support
Authors: Wang Xiao Feng
Published: January 2011

Wavelet analysis has become a popular subject in scientific research for twenty years. It has been a powerful tool for exploring and solving many complica -ted problems in natural science and engineering computation. The notion of exact orthogonal nonseparable four-variate wavelet packs is introduced. A novel method for constructing them is provided by iteration method. The orthogonality properties of four-variate wavelet packs are discussed. Three orthogonality formulas concerning these wavelet packs are provided. The pyramid decomposition scheme is derived
Development of On-Line Performance Monitoring and Fault Diagnosis System for Diesel Generator System
Authors: Cai Yan Ping , Li Ai Hua , He Yan Ping , Wang Tao
Published: January 2011

Aiming at the need of on-line performance monitoring and fault diagnosis for diesel generator system, an on-line data acquisition, analysis and diagnosis system based on portable industrial computer, different function sensors and PCL-818HD data acquisition card was constructed. Its design of hardware, software and its test and diagnosis method were given in this paper. Through the vibration signal analysis and on-line fault diagnosis example of generator system, it shows that the diagnosis system can realize on-line performance monitoring and fault diagnosis for diesel generator system.
Design and Manufacture of Energy-Recycling Pads for Low-Power Chips
Authors: Zhang Wei Qiang , Su Li , Wang Jun , Liu Bin Bin , Hu Jian Ping
Published: January 2011

Energy-recycling output pad cells for driving adiabatic chips are designed, which have been fabricated with Chartered 0.35um process and tested. The proposed energy-recycling output pad cells include mainly bonding pads, electrostatic discharge (ESD) protection circuits, and two stage energy-recycling buffers that are used to drive the large load capacitances on chip pads. The two stage energy-recycling buffers are realized using CPAL (Complementary Pass-transistor Adiabatic Logic) and PAL-2N (pass-transistor adiabatic logic with NMOS pull-down configuration), respectively. For comparison, a conventional output pad cell is also embedded in the test chip. The function verifications and energy loss tests for the three output pad cells are carried out. The energy consumption of the proposed two energy-recycling output pad cells has large savings over a wide range of frequencies, as compared with the conventional CMOS counterparts, since the energy on large load capacitances in the chip pads can be well recycled.
A Self-Adaptive Model of Two-Level for Dynamic Peer-to-Peer Networks
Authors: Huang Fei Xue , Li Zhi Jie
Published: January 2011

The present thesis puts forward a hierarchical P2P model: self-adaptive P2P model of two-level. Super peers compose a self-adaptive DHT network on the top layer, and lower ordinary peers take super peer in the same group as their center server to form a cluster. Data are stored in ordinary peers and super peers hold indices of data and answer for request from ordinary peers. When super peer join or leave, it does not maintain consistency of entire network’s logic topology but only update routing table of its predecessor and successor, besides, super peers update their routing table cache when they transmit messages. The ordinary peers keep backup of super peer for system restore when super peer fails. System can optimize network structure by select peers with high capacity to be super peer and restrict amount of peers in each group.
Bioremediation of Aquiculture Wastewater by Microalgae Isochrysis zhanjiangensis and Production of the Biomass Material
Authors: Zheng Jiang , Hao Ju Min , Wang Bo , Shui Chun
Published: January 2011

Aquiculture wastewater, which is rich in nitrogen and phosphorus, is a main reason for the eutrophication of the surrounding water and is always a problem for the sustainable development of aquaculture. Although many treatments have been used in the field, the expensive cost limited their wide application. Microalgea is one of the most potential biomass materials for the renewable energy. However, over expensive cost, especially the raw material cost limited its industrialization. Microalgae can utilize the N and P in the wastewater to grow, so it is feasible to remediate the wastewater by microalgae and produce the biomass energy of microalgae from the wastewater. The present paper studied the growth of Isochrysis zhanjiangensis in three aquiculture wastewaters and optimized the cultivating condition. The research showed that Isochrysis zhanjiangensis could grow in the wastewater from the culture of Cynoglossus semilaevis. Under the condition of pH7, illumination 5000 LX and original inoculation density 0.01 mg/mL, the microalgae had the best growth. Under the optimal condition, the microalgae could eliminate 78% active phosphorus, 100% ammonia nitrogen, 62.3% nitrite nitrogen and 84.7% nitrate nitrogen in the wastewater within 11 days, which suggested that it was a good method for microalgae to cultivate in aquiculture wastewater because it could not only bioremediate the wastewater but also produce the biomass material.
Knowledge Management Model Definition Language and its Application
Authors: Shi De Jia , Liao Kai Ji , Wang Li
Published: January 2011

Knowledge management modeling is foundation of knowledge management practice. Previous work of knowledge management modeling is mainly about concept architecture. Its tools and methods are not strong. This paper suggested a new knowledge management meta-model based on the analyzing and integration of knowledge management model. The core of the meta-model includes organizational structure, business process, resource and knowledge. A knowledge management definition language (KMDL) is proposed, which defines a least set of knowledge management modeling components and properties. It also offers a shareable exchange format in common sense. Based on the meta-model and KMDL, we developed a knowledge management modeling tool.
A Research and Application of Parametric Modeling Technology for Truck Frame Base on ANSYS
Authors: Chai Shan , Wang You Gang , Wang Peng Cheng , Li Li Jun , Gang Xian Yue
Published: January 2011

The parameters and controlled dimensions of design objects have an explicit correspondence relation when the parameters are given different values, the different models are created. This paper discusses the parametric modeling technology of truck frame. Building the spare parts by controlling the position of the cross-section, geometry and the numbers of the Key Point .It provides a feasible scheme of the parametric modeling of the truck frame.
Feature Model of Fabrics Irregular Defect
Authors: Liu Zhe
Published: January 2011

Aiming at current situation of absenting effective texture feature model for irregular defects of fabric image, this paper proposes a new feature model with “mean range” texture, which can express irregular defect of fabric better. In this paper, the definition of irregular defect is given, and rule model expressing fabric texture is established. At this basis, feature model of mean range texture is proposed, which can express irregular defects for all kinds of fabrics. After a large number of experiments, we conclude that feature with mean range is simple and effective, express fabric texture better, can show feature mutation of irregular defect, and offer reliable texture feature model for continue relating quality detection of fabric.
Application of Wavelet Transform in the Prediction of Chemical Composition of Sunflower Seeds by Near Infrared Reflectance Spectroscopy
Authors: Han Rui Zhen , Cheng Shu Xi , He Yong
Published: January 2011

In this paper, a method based on wavelet transform, which is used to analyze near infrared spectra, is discussed with the purpose of prediction of the content of oil, crude protein(CP) and moisture in sunflower seeds. By using different decomposing levels of Daubechies 2 wavelet transform, the near infrared spectra signals obtained from 105 intact sunflower seed samples were de-noised. Calibration equations were developed by partial least square regression (PLS) using the reconstructed spectra data with internal cross validation. It was indicated that the prediction effects varied when different wavelet decomposing level were employed. At the wavelet decomposing level 5, the best prediction effect was obtained, with the coefficient of correlation(R)and root mean square error prediction (RMSEP) being 0.953 and 0.466% for moisture;0.963 and 1.259% for crude protein; 0.801 and 1.874% for oil on a dry weight basis. It was concluded that the near infrared spectral model de-noised by means of wavelet transform can be used for the prediction of chemical composition in sunflower seeds for rapid pre-screening of quality characteristics on breeding programs.
Public Satisfaction of Highway Landscape Quality: A Case Study from China
Authors: Li Hong Jie , Zhang Xiao Ning
Published: January 2011

The research presented here constructed highway landscape quality evaluation indexes and a model based on public satisfaction. The goal was to determine if public satisfaction of highway landscape quality can be statistically measured. Several methods of highway landscape quality evaluation were first reviewed to determine what limitations were existed. From that review, a highway landscape quality evaluation indexes were selected and a model based on the selected indexes were constructed according to theory of public satisfaction. An on-site study was conducted to obtain public satisfaction of a scenic road using the selected indexes and model, statistical methods were employed to test the validity and reliability. Results indicate that the public satisfaction can reflect the quality of highway landscape, and the selected indexes can fully represent highway landscape quality.
Machine Vision Window Division on Self-Adaptation
Authors: Wang Xiu Chen
Published: January 2011

Aiming at time-consuming and ineffective problem of image window division in fabric defect detection, this paper proposes a new adaptive division method after a large number of experiments. This method can quickly and exactly recognize defect feature. Firstly, a division model on adaptive window is established, secondly, the formula to anticipate generally situation of fabric image is given according to the peaks and valleys change in the model, and methods to calculate the division size and position of adaptive window are given. Finally, we conclude that the algorithm in this paper can quickly and simply select the size and position of window division according to actual situation of different fabric images, and the time of image analysis is shortened and the recognition efficiency is improved.
Study on CBR-Based Automobile Engine Intelligent Fault Diagnosis Technique
Authors: Sun Pei Feng , Ni Yong
Published: January 2011

It is difficult to do the fault diagnosis on the modern car engines which have high technology and complex structures. In this study, a case-based-reasoning (CBR) based automobile engine intelligent fault diagnosis system was proposed against this problem. The system’s structure and its mechanism of fault diagnosis were introduced. The key techniques to implement the system were analyzed, including the case establishment, the case search, the case learning and the maintenance of case library. The proposed system gave a new way to establish an efficient automobile engine fault diagnosis system.
A RIA System for Education Plan Information Platform Based on CDIO
Authors: Liu Xing Li , Qin Ye
Published: January 2011

Currently, the shortage of engineering talent and quality of engineering education is a common problem all over the world. CDIO is a new engineering education concept and implementation of systems, with good prospects for the development and popularization. Therefore, this paper research and implement education programs Information Platform System (EPIPS). The system, based on CDIO engineering education, develop education plan and set up the architecture to the course of three projects, and it is based on Rich Internet Application (RIA) that can provide students rich learning experience. The result indicates that students can acquire graphical education plan based on CDIO friendly. In this paper, system architecture, the algorithm of traversing education plan and key techniques are introduced. Now, the system is running in Heilongjiang Institute of Science and Technology, and the ability of CDIO has been significantly improved, including of Students Engineering practical, the sense of teamwork.
Application of Chaos Particle Swarm Optimized Neural Networks for Evaluating the Credit Risk
Authors: Xiong Zhi Bin
Published: January 2011

This paper proposes a hybrid algorithm based on chaos optimization and particle swarm optimization (PSO) to improve the performance of the neural networks (NN) on evaluating credit risk. The hybrid algorthm not only maintains the advantage of simple structure, but also improves the convergence of the traditional PSO algorithm, and enhances the global optimization capability and accuracy of the algorithm. The test results indicate that the performance of the proposed model is better than the ones of NN model using the BP algorithm and traditional PSO algorithm.
A Two-Stage Hybrid Heuristic for Vehicle Routing Problem with Fuzzy Demands
Authors: Liu Chang Shi , Huang Fu Hua
Published: January 2011

A two-stage hybrid heuristic is presented for vehicle routing problem with fuzzy demands in this paper, the fuzzy credibility measure is employed to determine the credibility to send the vehicle to next node in the first stage, and a hybrid heuristics is proposed to determine a set of vehicle routes to minimize total costs in the second stage, especially for the additional distance and additional loading times. Finally the computational results are presented to show the high effectiveness and performance of the proposed approaches.
Quality Reliability Evaluation of the Miner Lamp Power Supply with Principal Component Analysis and Support Vector Machine
Authors: Ma Dan , Chen Zhan Qing , Huang Ji Da , Lv Hao Jin
Published: January 2011

The quality of the miner lamp power supply (MLPS) affects the performance of the miner lamp, while the safety performance and quality of the miner lamp are closely related to the safety production in coal mines. The factors, which affect the quality of power supply, are screened through the principal component analysis (PCA). After training the principal extracted component by PCA, the measurement model for the MLPS is set up based on support vector machine (SVM), meanwhile, the Gaussian function, which functions as the kernel function of SVM are selected to simulate, the test results indicate that the measurement model based on PCA-SVM could be used as the detection of the MLPS, which can better ensures the quality reliability of the MLPS.
Vibration Analysis for the Gate Rotor of the Single Screw Compressor Based on Wavelet Finite Element
Authors: Zhao Bin
Published: January 2011

The gate rotor was a main part of the single screw compressor. In order to study the vibration characteristics of the gate rotor, wavelet finite element was used to have vibration analysis for it. The Daubechies wavelet plate element was used for meshing depending on transverse deforming theory. The Daubechies wavelet plate element was established by using Daubechies wavelet as shape function, and the finite elment formulation was deduced finally. The top six natural frequencies and mode shapes of the gate rotor were acquired. The results were close to that calculated by ANSYS software. And the correctness of wavelet finite element method was verified. Through calculating the vibration properties of the gate rotor offered the theory instruction for designing and using it.
User Model of Personalized Search Engine for Product Design Based on Machine Learning
Authors: Kang Ying Shi , Wang Hai Ning
Published: January 2011

With the rapid development of internet technology, focusing on the product design of individual users, emphasizing the interaction design for Web and improving the user experience have become an inevitable trend of Web design, and also the hot spot of the design of personalized search engine. This paper proposed an optimized algorithm for building user models for product design websites. In order to show the design dimensions of Web pages presented by a browser, a concept of freshness is presented in this algorithm. By analyzing the user behavior of browsing Web pages, the model was updated using methods of machine learning. At last, the performance and effectiveness of this algorithm was analyzed and estimated through the simulation experiment.
Local Maximum Absorption Method for Structure Fitting in CryoEM
Authors: Shan Gui Hua , Liu Jun , Chi Xue Bin
Published: January 2011

Cryo-electron microscopy (CryoEM) is a very important method for studying the structures of macromolecules. Structure fitting is one of the key problems in CryoEM technique. We propose a novel structure fitting method for automatic alignment of the atomic model and CryoEM density map. Based on the domain knowledge, 3D density map is presented by local maximum points. And the atomic model is presented by atoms with high density value. According to characteristic of CryoEM density map, these atoms must correspond to one of the local maximum, then employ absolute orientation algorithm to calculate the rotation matrix and transfer vector. To show the efficiency of our method, we apply the algorithm on two pairs of test data.
Fast Mesh Segmentation for CAD Models
Authors: Shu Zhen Yu , Wang Guo Zhao , Fan Liang Zhong
Published: January 2011

In this paper, we present a fast method for segmentation of triangular meshes into simple patches. The method is suitable for commonly used CAD models. Given a mesh surface, all faces of it cluster to a user-specified number of patches according to similarity of curvatures. Experimental results show that our algorithm is very efficient and effective.
Numerical Simulation on the Laser Bending of Thin Wall Tubes
Authors: Hao Nan Hai , Gai Yu Ling
Published: January 2011

Laser tube bending is a spring-back-free noncontact forming method that has received considerable attention in recent years. Compared to mechanical bending, no hard tooling, dies, or external force is used in laser bending, thus the cost is greatly reduced for small-batch production and prototyping. Some quality issues, such as cross sectional distortion and intrados protrusion exist in laser bending and have growing tendency when the tube’s wall being thinner. This paper investigates the effects of process parameters on the deformation of thin wall tube through numerical simulations and experiments. The dimensions of the tube analyzed are 32 mm in outer diameter and 0.48mm in wall thickness. A three-dimensional transient thermo-mechanical analysis using the finite element method is carried out to simulate the laser bending process with some results validated by experiments. The effects of process parameters on the deformation of thin wall tubes are discussed in detail.
A Feasible Method for a Class of Mathematical Problems in Manufacturing System
Authors: Feng Qi Gao , Mao Han Ping , Jiao Hong Wei
Published: January 2011

In this paper a feasible method is proposed for solving a class of mathematical problems in manufacturing system and production system. By utilizing linearization technique the relaxation programming problem about the original problem is constructed. The proposed branch and bound algorithm is convergent to the global minimum of original problem through the successive refinement linear relaxation of the feasible region of objective function and solutions of a series of relaxation linear programming problem. And large number of experiments results show feasibility of presented method.
Study on Mid-Infrared Transmittance Spectroscopy for Fast Measurement of Crude Fat Content in Fish Feeds Based on BPNN and LS-SVM
Authors: Zhu Feng Le , He Yong
Published: January 2011

The crude fat content in fish feeds was determined using mid-infrared transmittance spectroscopy and chemometrics fast and non-destructively. A total of 225 samples were prepared for spectra collecting from a FT/IR-4000 Fourier Transform Infrared Spectrometer (400-4000cm-1). Principal component analysis (PCA) was carried out and spectral data were compressed into several new variables, which can explain the most variance of original spectra. The first six PCs were used as inputs of back-propagation neural network (BPNN) and least squares-support vector machine (LS-SVM) to create the calibration models. Compared with BPNN, a slightly better prediction precision was achieved based on LS-SVM with correlation coefficient (R) = 0.9757 and root mean square error for prediction (RMSEP) = 0.2579. The overall results indicated that mid-infrared spectroscopy incorporated to chemometrics was promising for the accurate assessment of crude fat content in fish feeds.
A Review of Synthetic Aperture Radar Seeker Related Technology Research
Authors: Wang Wei Guo , Zhao Yi Nan , Qiao Xiao Lin
Published: January 2011

Synthetic aperture radar seeker (SARS) is the extension in the field of the synthetic aperture technology, and now has become a hot spot in the research and development of radar seeker. In this paper we summarized the research of the SARS related system and imaging guidance related technology. We analyzed the way of long range ballistic missile using matched guidance at the front stage of ballistic trajectory and using target search guidance at the end of ballistic trajectory. Finally we prospect the direction of SARS development.
Research on Multimedia Communication Based on IPv6
Authors: Gu Yue Sheng , Zhang Bao Jian , Li Yan Cui
Published: January 2011

The multimedia communication based on IP network has been a popular direction. The problems of the multimedia communication in current IP network are analyzed. The transfer specialty of multimedia, key technologies and primary specialty of IPv6 are introduced. Finally, a multimedia communication system based on IPv6 is discussed.
Measurement of Composition Variation of Municipal Solid Waste Incineration (MSWI) Fly Ash during Thermal Treatment
Authors: Zhang Hai Ying , Zhao You Cai , Qi Jing Yu
Published: January 2011

This study aims to develop a methodology for analysis of composition variation of MSWI fly ash during heating process. This work performed analysis of elementary and chemical component variation as a function of temperature, by means of XRF and ICP. It is found that fly ash registers a SiO2–Al2O3–metal oxides system and its content of glass phases is around 57% which is conducive to reduction of energy consumption in its recycling process. Content of crystal phases first increases between room temperature and 800°C and then decreases between 800°C and 1300°C, while that of glass phases registers a reverse trend.
Effect of Material Composition on Mechanical Properties of Ceramics-Metal Composite Materials
Authors: Fujii Tomoyuki , Tohgo Keiichiro , Araki Hiroyasu , Wakazono Katsunori , Ishikura Masaki , Shimamura Yoshinobu
Published: January 2011

This paper deals with fabrication and strength evaluation of biocompatible composites consisting of partially stabilized zirconia (PSZ) and pure titanium (Ti). The biocompatible composites of PSZ-Ti were fabricated by a hot pressing method of powder metallurgy. A volume ratio of PSZ and Ti was changed. Four-point bending tests and Vickers hardness tests of the PSZ-Ti composite were performed to determine the Young's modulus, bending strength, Vickers hardness and fracture toughness. These properties were characterized as a function of Ti volume fraction. The Young's modulus and Vickers hardness were higher than the prediction of the rule of mixture. The bending strength and fracture toughness were decreased with increasing Ti content. To discuss these results from a viewpoint of reaction products, the components of raw powders and sintered composites were investigated by X-ray diffraction analysis. It is concluded that oxide of titanium and other reaction products were created after sintering and they affected the mechanical performances of the composites.
New Developments in Electrochemical Finishing
Authors: Adayi Xieeryazidan , Gheni Mamtimin , Aiyiti Wurikaixi
Published: January 2011

Electrochemical finishing (ECF), which is based on anodic electrochemical dissolution (ECD) process, appears to be very promising as a future finishing technique, since in many areas of applications it offers attractive advantages over traditional finishing processes such as its applicability regardless of material hardness, no cathode tool wear, smooth and bright surface, and a wide range of materials that can be finished. Therefore, in this contribution, a review is presented on current research, advancement and industrial practice in ECF. This paper highlights the influence of various predominant factors of ECF, including power supply, design and advancement of cathode tool, etc. The finishing mechanism of ECF and its hybrid processes are also concerned in this paper.
Analytical and Numerical Investigation of Fatigue Crack Growth in Aluminum Alloy
Authors: Golestaneh Amirreza Fahim , Ali Aidy , Bayat Mehdi
Published: January 2011

The work presents a summary of previous studies on fatigue crack propagation within various Aluminum alloys. The effective characteristics on crack growth are first highlighted and the influence of surface engineering such as polishing, shot peening and skimming to enhance the failure resistance are discussed. Several different existing developed models for predicting the rate of crack propagation are compared in terms of incorporated effective parameters. Finally numerical and computational analyses as the accurate, fast and cheap methods which have attracted the Engineers’ interest are reviewed and compared with other methods.
Three-Dimensional Stress Analysis by a Digital Image Correlation Method and the Three-Dimensional Local Hybrid Method
Authors: Kojima Hiroyuki , Machida Kenji , Zhang Zu Guang
Published: January 2011

Most measurement by experiment is about a structure surface and it is dramatically difficult to measure the stress state inside a structure. Although the stress analysis of a big structure is possible by the 3-D finite element method, great time, labor, and expense are needed for modeling and calculation. Then, we developed the 3-D local hybrid method which analyzes only the local model of a structure and can evaluate the stress field inside it from surface data obtained by easy measurement. In previous studies, the good result was obtained with the surface cracked specimen subjected to uniform tension and a cantilever subjected to bending. However, with an actual structure, it is not thought that simple bending deformation which is produced under an experiment environment arises. In this study we examined whether the 3-D local hybrid method would be able to apply to the structure subjected to bending and torsion by using the displacement on front surface and the displacement of upper and lower sides of a local model. It was clarified that the 3-D local hybrid method is very useful to the 3-D stress analysis of the structure subjected to the complicated loading (uniform, bending and torsion, etc.).
Human Body Tissues Model Reconstruction Based on the Reverse Engineering
Authors: Shi Yong Fang , Gheni Mamtimin , Huang Yan Hua , Jiang Hong
Published: January 2011

With the necessity and importance of reconstructing medical image model on the medical application and research, a variety of methods reconstructing human body tissues were introduced according to different original data and application purposes. The different reconstruction processes of human pelvic tissues, molar and incisor models are detailed. This proves the validity and feasibility of the different means.
Preventive Suggestion and Fault Analysis on Piston Fracture of the Methanol Fresh Air Compressor C102B
Authors: Zhang Ya Xin , Bie Chao , Cheng Fen , Su Zhi Zhong , Gheni Mamtimin
Published: January 2011

The piston is a key moving-part of the reciprocating piston compressor with a high failure rate. Because of the difficult exact calculation of machinery dynamic, the traditional and common way to find the reason of fracture is based on metal-lographic phase of piston material. The C102B reciprocating piston compressor is an important equipment in methanol plant. In this paper, in connection with the piston fracture of the C102B fresh air compressor on service , besides a lot of analysis on metal-lographic phase, the 3-D model of piston and cylinder were built-up, and the two dangerous places where the piston suffered max-force were found. Bases on ANSYS and FEM technology, the value of max-force on piston at the two places were carried out. Finally, the reasons of piston fracture of the C102B fresh air compressor were found and some preventive suggestion was proposed.
Synthesis and Structural Consideration of Metal-Organic Framework (MOF) Coordination Polymer with Various Metal Linker Ratios
Authors: Misran Halina , Adminuddin Atiah Mohd , Zini Faizul Akmal Mohd , Singh Ramesh
Published: January 2011

Metal-organic framework MOF-5 (i.e. IRMOF-1) with the chemical structure of Zn4O(BDC)3 were successfully synthesized using room temperature synthesis approach of direct-mixing method ans liquid-crystal templating method. The metal clusters organic linker used was benzenedicarboxylic acid (BDC). Direct-mixing approach resulted in MOF-5 with tetragonal cell while the liquid-crystal templating method resulted in cubic structure. The metal/linker ratios were varied from 0.1 to 1 to study the effect of metal linker on the formation of MOF-5 materials and their characteristics. The crystallinity of the evacuated framework MOF-5 materials were increased when the metal/organic linker ratios were increased from 0.3 to 0.5. However, the cubic structure of the evacuated framework was relatively disrupted at metal/linker ratio 0.7.
Critical Stress Intensity Factor Determination for AZ61 Magnesium Alloy
Authors: Daud M.A.M. , Sajuri Zainuddin , Omar Mohd Zaidi , Syarif Junaidi
Published: January 2011

A stress intensity factor K was used as a fracture parameter to determine the plane strain fracture toughness KIC of AZ61 magnesium alloy using a single edge notch bend (SENB) specimen in accordance to ASTM E399 testing method. Five different specimen thicknesses of 2 to 10 mm were used in the test. A sharp fatigue pre-crack was initiated and propagated to half of specimen width at a constant crack propagation rate of about 1 x 10-8 m/cycle before the specimen was loaded in tension until the fracture stress is reached and then rapid fracture occurred. The fracture toughness KC values obtained for different thicknesses showed that KC value decreased with increasing specimen thickness. The highest KC value obtained was 16.5 MPa√m for 2 mm thickness specimen. The value of KC became relatively constant at about 13 MPa√m when the specimen thickness exceeds 8 mm. This value was then considered as the plane strain fracture toughness KIC of AZ61 magnesium alloy. Calculation of the minimum thickness requirement for plane strain condition and the size of the shear lips of the fracture surface validate the obtained KIC value.
Strength Analysis for Shrink Fitting System Used for Ceramics Rolls in the Continuous Pickling Line
Authors: Noda Naoaki , Hendra  , Oosato Masakazu , Suzumoto Kenta , Takase Yasushi , Li Wen Bin
Published: January 2011

Cast iron and steel rolls used in the continuous pickling line must be changed frequently because the continuous acid wash equipment induces wear on the roll surface in a short period. The damage portions are usually repaired by using the flame spray coating. Recently, ceramics materials are planed to be introduced to prevent the damage because of their high abrasion and corrosion resistances. In this study new roll structure is considered where a ceramics sleeve is connected with steel shafts at both ends by shrink fitting. Here, the ceramics sleeve may provide a longer lifetime and reduces the cost for the maintenance. However, attention should be paid to the maximum tensile stresses appearing between the ceramics sleeve, spacer rings and steel shafts because the fracture toughness, plasticity and fatigue strengths of ceramics are extremely lower than the values of steel. In this study, finite element method analysis is applied to the new structure, and the maximum tensile stress and stress amplitude have been investigated with varying the dimensions of the structure. Fatigue strengths of ceramics are also considered under several geometrical conditions.
Analysis of Thermo-Mechanical Stresses in Laminated Hollow Circular Cylinder with Finite Length
Authors: Zhao Hong Jin , Shao Zhu Shan , Wu Min Zhe
Published: January 2011

Thermo-mechanical stresses analysis of laminated hollow circular cylinder with finite length are carried out in this study based on the theory of laminated composites. The hollow circular cylinders with finite length are simply supported at four edges and are subjected to nonuniform thermal and mechanical loadings on the inner and outer surfaces. Analytical solutions of temperature distribution and thermo-mechanical stress fields are derived by using variable separation approach and series solving method. A four -layer laminated hollow circular cylinder with finite length is numerically analyzed by using the present method. All results are graphically presented and briefly discussed.
Cyclic Behavior of Electrical Resistance Type Low Stiffness, Large Strain Sensor by Using Carbon Nanofiber/Flexible Epoxy Composite
Authors: Shimamura Yoshinobu , Kageyama Kyohei , Tohgo Keiichiro , Fujii Tomoyuki
Published: January 2011

Carbon nanofiber (CNF) has good electrical conductivity. Addition of a few percentages of carbon nanofiber to polymer yields electrical conductivity but hardly affects the mechanical properties of polymer. This conductive polymer may be useful for sensing applications such as strain sensors and chem-resist sensors. Many researchers have reported on the electrical conductivity, but the electrical resistance change under strain of the carbon nanofiller composites is not fully investigated. In this study, the electrical resistance change under strain of CNF/flexible-epoxy composites was investigated experimentally. More than 100% of quasi-static strain can be measured by using CNF/flexible-epoxy composite with Young’s modulus of less than 1MPa. Cyclic and unloading behaviors were also measured and discussed. It was found that the cyclic behavior was strongly affected by viscoelasticity and damage.
Numerical Investigation of Curing Process in Reaction Injection Molding of Rubber for Quality Improvements
Authors: Javadi Seyyed Mohammad , Moghiman Mohammad , Erfanian Mohammad Reza , Hosseini Naseh
Published: January 2011

A large number of rubber products are formed into their final shape by vulcanization. In particular, curing process of rubber is the final step in manufacturing many rubber products and determines both the quality of the resulting product as well as production costs. This paper is devoted to the simulation of rubber curing process in a three-dimensional model. The effects of final temperature of mold are investigated on curing process and quality of final product. The results were compared with the experimentally measured data, which confirmed the accuracy and applicability of the method.