bluuebunny/crossref_metadata_2025 huggingface dataset:
Genetic Algorithm for Assembly Sequences Planning Based on Heuristic Assembly Knowledge
Authors: Pan Hao , Hou Wen Jun , Li Tie Meng
Published: December 2010

To improve the efficiency of Assembly Sequences Planning (ASP), a new approach based on heuristic assembly knowledge and genetic algorithm was proposed. First, Connection Graph of Assembly (CGA) was introduced, and then, assembly knowledge was described in the form of Assembly Rings, on that basis, the assembly connection graph model containing Assembly Rings was defined, and the formation of initial population algorithm was given. In addition, a function was designed to measure the feasible assembly and then the genetic algorithm fitness function was given. Finally, an example was shown to illustrate the effectiveness of the algorithm.
Network Security Situation Prediction Using Artificial Immune System and Phase Space Reconstruction
Authors: Shi Yuan Quan , Li Tao , Chen Wen , Fu Yan Ming
Published: December 2010

To solve network security situation prediction problem, a novel Prediction approach for network security situation based on artificial Immune system and Phase Space Reconstruction (PIPSR) is proposed. In PIPSR, we use phase space reconstruction to analyze the time series of network security situation and to reconstruct proper time series phase space; then, we use immune evolution mechanism to construct corresponding prediction model for network security situation; and lastly we use this prediction model to forecast network security situation. The simulation results show that PIPSR can more exactly forecast the future network security situation than GAP and BPNNP.
The Energy Absorption of Structural Target with Stiffeners Impacted by Projectile
Authors: Zhang Zhong Guo , Gao Bin , Liu Zhao Hui
Published: December 2010

Under penetrating condition, the plastic deformation of structural target is divided into local deformation region and global deformation region in this paper, calculate the energy absorbed by two deformations respectively and present a calculation method of energy absorption of structural target with stiffeners. Good agreement between the results of predicting the residual velocity of projectile by calculating the energy absorbed of structural target and results of numerical calculation illustrates that this method is reasonable.
The Comprehensive Evaluation of Regional Agricultural Brand Competitiveness Based on Fuzzy Gray Analysis
Authors: Tong Guang Ji , Wang Wei
Published: December 2010

In the development process of the regional agricultural brand, there are a large number of influential factors with uncertain connotations and extensions, which causes the evaluation information incomplete and inadequate, so it needs to consider fuzziness and gray in the comprehensive evaluation at one time. To make the evaluation of regional agricultural brand competitiveness more objective and accurate, this paper introduces gray theory into the traditional fuzzy comprehensive evaluation method, and establishes a comprehensive evaluation method with these two through finding gray statistics, and constructing the fuzzy subjection matrix of the regional agricultural brand competitiveness. At last, an example is taken to verify this method.
A RSA-Based Data Integrity Check without Original Data in the Cloud Computing
Authors: Zhang Jian Hong , Liu Xue , Liu Cheng Lian
Published: December 2010

At present, Cloud computing is becoming a hot topic in the field of research and applications. It moves the application software and databases to the centralized large data centers, where the management of the data and services may not be fully trustworthy. However,this unique paradigm brings about many new security challenges, which have not been well understood. As such, it has become crucial for an archive service to be capable of providing evidence to demonstrate the integrity of data stored in it. This work studies the problem of ensuring the integrity of data storage in Cloud Computing.
An Efficient Hierarchical Clustering Algorithm and its Application for Image Retrieval
Authors: Xu Wang Ming , Fang Kang Ling , Zhang Hai Ru
Published: December 2010

Clustering is an efficient and fundamental unsupervised learning algorithm for many vision-based applications. This paper aim at the problems of fast indexing high-dimensional local invariant features of images (e.g. SIFT features) and quick similarity searching of images in a scalable image database by using a hierarchical clustering algorithm. We adopt the hierarchical K-means (HKM) clustering method to build a visual vocabulary tree efficiently on given training data and represent image as a “bag of visual words” which are the leaf nodes of the visual vocabulary tree. For the application of image retrieval, we adopt an usually-used indexing structure called “inverted file” to record the mapping of each visual word to the database images containing that visual word along with the number of times it appears in each image. We propose a weighted voting strategy for the application of content-based image retrieval and achieve desirable performance through experiments.
Study on Data Management of High-Speed Railway Transport Equipment Based on Metadata
Authors: Jia Chao Long , Xu Wei Xiang , Wang Han Ning
Published: December 2010

Data platform of data sharing and service provide technical support for high-speed railway transportation organization, it provide data parameter and data support for high-speed railway operation management, and it plays an important role in promoting national economic development. In this paper, the metadata theory is used for data storage, data cataloging, data retrieval and data discovery in the management of the Beijing-Shanghai high-speed railway transportation equipment, analyze and propose key technologies of the establishment of data sharing platform based on metadata management of high-speed railway transportation equipment, correlation analysis is made and the result of analysis indicates that data platform can greatly improve the utilization and ability to obtain high-speed railway transportation equipment data. It can also improve the ability to support organizational decision-making of high-speed railway transportation.
Detection Method of Gradual Fault Signal Based on Wavelet Transform in the Dynamic System
Authors: Du Hai Lian , Wang Zhan Feng , Lv Feng , Du Wen Xia
Published: December 2010

The non-stationary signal is classified into the abrupt singular signal and the gradual singular signal. Because the fault of closed-loop control system is difficult to detect the initial moment when the fault happened, and often there is a more serious consequences once the fault was detected. A new method is proposed which can predict whether the fault happened through the trend signal of a dynamic system. The trend signal was got by the wavelet transform of the detected signal. In order to verify the effectiveness of the method, the leak fault was installed in the process control water tank experiment system, and the signal of liquid level and flow was collected. The gradual leak fault was found through the trend signal in low frequency which was got by the wavelet multi-scale resolution, so the practicability of the proposed method was proved.
Analysis of Bridge-Type Nano-Positioning Stage
Authors: Ma Li , He Zheng Feng , Ouyang Hang Kong
Published: December 2010

A piezoelectric nanostage using bridge-type flexure hinge mechanisms is developed. Elastic beam theory was used to analyze the ideal and theoretic displacement amplification ratio and find that their value is mainly influenced by the length of the tilt rod and tilt angle of bridge-type. A multilayer S-type hinge is designed as the prismatic of moving platform. Stiffness and natural frequency model of the whole stage is built and find out that their value is mainly relevant to hinge thickness, tilt angle of bridge-type hinge and length of S-type hinge. Finally, finite element method (FEM) is used to verify the drived model. The errors of the total stiffness and the natural frequency of the stage between FEM and theory analysis are 3.8% and 6.6% respectively, which confirm the predictions of theory analysis.
Analysis the Interface of Amplifier in GPON System by PSpice
Authors: Li Li , Zhang Ji Jun
Published: December 2010

Model help to understand the system there may be a signal reflection and impedance matching problem. Most fiber integrated circuits from Maxim use Current Mode Logic (CML), Positive Emitter Coupled Logic (PECL), and Low Voltage Differential Signal (LVDS) I/O formats. Language can be set up through the PSpice circuit model of the IC, with an ideal voltage controlled current source of alternative sources and active circuit elements. And the use of spice macro-model simulation to test the circuit performance of the chip interface design. In this paper, it takes the model of amplifier IC in GPON receiver front-end for example to shows the steps and importance of interface simulation in GPON system by PSpice macro-model.
WSN Image Watermarking Algorithm Based on Multi-Wavelet
Authors: Li Xin , Jiang Yu , Song Jian Jun , Cui Wei Li
Published: December 2010

A WSN image watermarking algorithm based on multi-wavelet was proposed. When the instability of image transmission in wireless sensor networks was considered, the proposed algorithm can increase the capacity of the image watermark. In this paper, the wavelet transform coefficients were analyzed by the noise visibility function. And the bits were embedded into the coefficients which have more ability to the tolerance of the noise according to the designated threshold. We achieved the adaptive adjustment in the watermarking strength combined with the JND in the wavelet domain. The experimental results show that the improved watermarking algorithm was adapted to a grayscale image. It can improve the information capacity and the identification capability of the grayscale images greatly. In addition, the renovated algorithm was feasible in the high-capacity watermarking and the watermarking capacity was increased obviously. It provided methods and means for the high-capacity watermarking, and also provided a new way for the further research in the new watermarking technology.
A New Algorithm of Discretization of Consecutive Attributes Based on Decisions in Rough Sets
Authors: Pan Wei , An Rong , Yang Hong Ji
Published: December 2010

Proposes a new domain-knowledge independent algorithm of discretization of consecutive attributes based on decisions to amend the limitation that Rough Sets can only deal with the discrete attributes in data sets. Unlike traditional methods, the candidate breakpoint set is obtained after the calculation and sorting of the attribute significance of each consecutive attribute thus leads to a smaller set size and less computational complexity. At the same time, proposes some rules of reducing candidate breakpoints in order to increase the velocity of system convergence. Using the algorithm, the decision table after discretization will be always consistent and can reserve useful information as much as possible. Finally, the algorithm is knowledge-independent and can be used in different fields without any additional information.
A Novel Segmentation Algorithm for Complex Images Based on Valid Gradient
Authors: Pan Wei , Yang Na Fei
Published: December 2010

Traditional image segmentation algorithms usually can’t obtain expected effects when facing with complex images such as container code images with complex backgrounds and bad illuminations. This paper introduces the definition of valid gradient and proposes a novel image segmentation algorithm based on it to solve above problem. Through statistical analyzing of the valid gradient information of the edges between the target and the background, some thresholds can be obtained directly and used to segment the images. The experiment results show that the algorithm can get better performance evaluation. Finally, the algorithm has good practicability and can be used directly in different image segmentation fields.
A Continuous Control for Stabilizing the Extended Nonholonomic Double Integrator: Theory and Simulation Results
Authors: Peng Yan , Liu Mei , Xie Shao Rong , Luo Jun
Published: December 2010

The extended nonholonomic double integrator (ENDI) cannot be asymptotically stabilized by a continuous and time-invariant feedback controller since it violates the Brockett’s condition. In this paper, a new continuous control scheme is proposed to stabilize the ENDI system without drift. The dynamics of an ENDI system is enlarged to a higher dimensional space where a continuous but time-varying control law is designed for its stabilization. Besides the theoretical proofs, simulations conducted on the dynamics of a mobile robot are also presented to demonstrate the validity and performance of the proposed method.
Barriers of SCM in SMEs
Authors: Rahman Mohd Nizam A. , Wasilan Harlina , Md Deros Baba , Ghani Jaharah Abd.
Published: December 2010

Supply chain management concept (SCM) was begun to be accepted by the industry, but there were several barriers identified during the application of this concept. The purpose of this research was to identify the barriers faced by manufacturing industry especially among SMEs in implementing SCM. This study was carried out using questionnaire distribution method to research sample consisting of SME manufacturing company. The results shows the list of obstacles existed in SCM implementation in industry with involvement of; lack of skill; lack of knowledge; lack of power; lack of infrastructure; and lack of trust. Extensive discussion based on previous studies/research related to SCM was done in this research. Improvement in SCM which can be made as reference by researcher in the future was proposed. It hopes the research can support the body of knowledge.
MCU-Based Detection and Control System Design of a Kernel Hardness Tester
Authors: Cao Yi , Li Xiu Juan , Yue Long Wang
Published: December 2010

A novel kernel hardness tester was introduced in the paper, and the detection and control system was studied in detail. The stylus of the tester is forced into grain which placed in a container. The force which was acquired by a load cell and the displacement of the stylus which was measured by an optical encoder were used as a new hardness index. The core microcontroller unit (MCU) applied in the paper is STC89C52 to accomplish the data acquisition and the position control of a DC servo motor.
Particle Swarm Optimization for Scattering Coefficients in One-Dimensional Non-Uniform Media
Authors: Wang Yan Ming , Wang De Ming , Zhong Xiao Xing , Shi Guo Qing
Published: December 2010

Inverse problem of scattering coefficients in one-dimensional non-uniform medium has been investigated. A stochastic particle swarm optimization algorithm (SPSO) with a stochastic selection is adopted to estimate the absorption coefficients in a one-dimensional absorbing, emitting and scattering medium. The directional radiative intensities simulated by discrete ordinate method are served as input for the inverse problems. The performances of this algorithm on the accuracy of estimation are examined. Numerical results show that the proposed algorithm can guarantee the convergence of the global optimization solution, and is proved to be fast. The distribution of scattering coefficients could be estimated accurately.
Process Quality Control Method for Individualized Customization Based-Customer Satisfaction
Authors: Jiang Xing Yu , Sun Xue Yan , Wang Shi Jie , Zhang Xin Min
Published: December 2010

To cope with the problems of monitoring dynamic and variable quality variation for individualized customization, diagnosing the abnormal variation and adjusting the process at the right moment, is a difficult problem that individualized customization faces in process quality control. This mode dealt mainly with constructing and running dynamic quality control system, integrated several enabling technologies such as process quality analysis on-line based on similarity process, process quality diagnosis based on Elman and expert system of process quality adjustment. It is basis of realizing network, intelligent and automatic process quality control.
Adjustable Respiratory Mechanical Parameters Lung System for Medical Patient Simulator
Authors: He Zhong Hai , Zhu Guang Shuai
Published: December 2010

A lung simulator utilizing flow track to simulate spontaneous breathing is presented as an alternative to the existed lung system in the medical patient simulator. The hardware of simulator is similar and updated from Meka’s paper. The existing lung system can be divided into two main types. One is traditional bellows driven mechanical lung system, the other is bellow-less lung simulator driven by carinal pressure that to be controlled. Our lung simulator is upgraded from bellow-less simulator. The research focus on the flow pattern the lung simulator generated which can image the lung mechanical factors directly. The flow pattern of the lung simulator is modeled by transfer function combined with respiratory muscle pressure, which is the target that the bellow-less lung simulator to track. The target flow pattern is tracked by PID algorithm widely used in automation filed and realized by Control Design and Simulation module in LabVIEW. We simulate the normal respiratory motion by flow track in this study. The pathology breath flow can be simulated by change of resistance, compliance or muscle pressure, which is easy to adjust in the LabVIEW program.
Composing Multi-Resource Systems by Category Theory
Authors: Lai Hong Feng
Published: December 2010

This paper proposes a categorical foundation for composing multi-resource in manufacturing systems. The composing procedures of overall system can be explained by pushout of category theory. The purpose of this paper is to resolve the issue involves in resource sharing, coordination and conflict for modeling the distributed manufacturing systems. We will propose a method for modeling discrete event system. The mathematical foundation lies in assuring that the constructed models have mathematical properties, e.g. consistency and completeness, and overcome the drawbacks of traditional function models, since it can show not only the static structure of resources but also the behavioral semantics of resources. The categorical notations and properties are to be expressed by a workcell example.
The Research on Path Planning of Wall Climbing Robot Based on Ant Colony Algorithm and Minimum Gravity Consumption Algorithm
Authors: Liu Jun , Xiao Jun , Sha Xian Zheng
Published: December 2010

Wall climbing robot is widely studied and used in a lot of industries such as cleaning, nuclear industry, construction industry and fire department due to the character of working on vertical wall. It is adopted because it can work in the dangerous space instead of people. The paper mainly studies path planning of wall climbing robot. Firstly, the paper demonstrates path planning of wall climbing robot on the plane conditions using basic ant colony algorithm and improved ant colony algorithm. Secondly, the paper proposes the minimum gravity consumption algorithm to execute path planning on the vertical wall. At last, the paper makes path planning with the fusion of ant colony algorithm and the minimum gravity consumption algorithm. The simulation shows that the algorithms are effective.
Multi-Scale Edge Extraction Based Stereo Matching Algorithm
Authors: Lian Jing , Li Lin Hui , Shen Xiao Yong , Hao Xian Peng
Published: December 2010

In the field of robot vision, edge feature based stereo matching algorithm can reconstruct the targets with clear contours, which needs accurate and continuous target edges been extracted. In the paper, the smoothing filter operator was designed based on the discrete criteria of edge extraction and its correspondence optimal linear filter. Edge extraction was carried out incorporated the nonmaximum suppression and two thresholds techniques. The discrete criteria based multi-scale edge extraction method was studied with full use of the multi-scale character of the edge information. The detected multi-scale edges were synthesized to obtain the accurate and continuous single pixel wide edge. Then an edge feature based stereo matching algorithm was proposed to obtain 3D information of target. The experimental results demonstrate that the method can effectively suppress disturbance in outdoor environment and reconstruct target contour clearly.
Research on the Global Forming Process of Straight-Drawing Pole in Automobile
Authors: Sun Yin Da , Xu Wen Qin , Zhou Bai Qing , Zhu Feng
Published: December 2010

The conventional technology about how to segmental machining and welding form the straight-drawing pole in automobile has been changed by a new technology reamed by a tube blank, which improves its mechanical performance and appearance quality. Material is saved and working efficiency is raised as well.
Research on Speed Monitoring and early Warning Method for Vehicles Based on RFID Sensor Tag
Authors: Yuan Jiang , Yan Kui , Qiu Zi Xue , Shao Jian Xin
Published: December 2010

A new method was proposed for vehicle speed monitoring and early warning based on RFID sensor tag technology to realize real-time speed monitoring in high way. The principle of speed monitoring, the hardware and software of RFID sensor tag and reader network using GPRS technology were introduced in detail. Experimental results show that the actual velocity of vehicles can be acquired by on board RFID sensor tag, when the vehicle drives over the limited speed, the system can voice alarm to the driver. The identity information, actual speed and time of vehicle are read wirelessly by readers installed along the roadside, these messages can be upload to control center through GPRS network to monitor vehicle states, such as the position, average speed, the flow of transportation and so on.
Research on Manufacturing Process Traceability in Tire Enterprise
Authors: Gao Yan Chen , Yang Dian Cai , Ning Wei Wei
Published: December 2010

Traceability is an important function for the management of tire enterprise, and building a manufacturing process tracing system will make the contribution for the monitoring of the product quality and the confirmation of accident reason. So a tire manufacturing process tracing framework based on RFID technology was proposed combined with the characteristics of tire manufacturing. A tracing mapping model was designed for the entire manufacturing process.
Diagnosing National Culture Elements for Successful TQM Implementation: Case Study in Libya
Authors: Shokshok Mostafa Ahmed , Rahman Mohd Nizam A. , Dzuraidah Abd Wahab , Ismail Ahmad Rasdan
Published: December 2010

This paper is to investigate the current status of national culture variables in Libyan manufacturing companies to furnish a base for TQM framework design. In order to achieve the objectives, an extensive literature review had been carried out, this was followed by a survey questionnaire conducted in major manufacturing industries in Libya (Oil & Gas Sector and Industrial Sector). SPSS software was used for performing the analysis, we found that Libyan manufacturing culture comprises of high power distance, slightly high uncertainty avoidance, long-term orientation and masculine society. We also found that the society is on average of individualistic collectivistic dimension. The findings compared with other studies and suggested for future improvement of the Libyan companies.
Virtual Maintenance Process Modeling and Simulation
Authors: Zhou Dong , Wang Mei Hui , Huo Lin , Lv Chuan
Published: December 2010

Virtual maintenance technique brings new mode for system maintainability design and analysis, however, the theory of virtual maintenance is not fully studied and researches are deficiency in the key field of virtual maintenance modeling and simulation. So virtual maintenance model and simulation control method are studied in the paper. Virtual maintenance model is based on Petri Net and can describe the relations of maintenance resources, and the model structure, formal definition, maintenance object, resource state and model operation are given. In addition, virtual maintenance simulation rules and simulation scheduling method are built in the paper. Simulation scheduling objective, flow and conflict features of maintenance process simulation are analyzed, and conflict strategies are addressed subsequently. Finally, a case study of the LRU repair of an aircraft is conducted, and the result confirms the validation and feasibility of all the studies, which can become a new technique means for maintainability engineering.
Automotive Modeling Design of Semiotics Decipher
Authors: Zhu Ying , Liu Xue , Jing Jia , Xie Yong Dang
Published: December 2010

In the modern society, as one of the most important products in the world, automobile is not only bearing its main function, but also many other functions just like the semiotics. This article talks about the relationship between semiotics and basic elements of automotive design. The authors discuss the culture, technology, aesthetic, emotion, speed, security and many other considerations of automotive design to find out the effective ways to design vehicles. Exploring and establishing the theories in modeling of automotive to reveal how to express the semiotics in the products of automotive.
Suppression of Maglev Track-Induced Self-Excited Vibration Using an Adaptive Cancellation Algorithm
Authors: Zhou Dan Feng , Li Jie , Hansen Colin H.
Published: December 2010

The track-induced self-excited vibration is a special problem that exists in EMS (Electromagnetic Suspension) maglev systems. In this paper, the stability of the electromagnet-track coupled model is examined, and it is found that the second order vibration mode of the track may cause instability problem. To suppress the self-excited vibration, an LMS (Least Mean Square) adaptive cancellation scheme is presented, and a phase locked loop is employed to generate a reference signal for the LMS algorithm. Analysis and simulation show that the proposed adaptive cancellation algorithm is effective in suppressing the vibration with unknown frequency.
Production of Bacterial Cellulose by Gluconacetobacter xylinus Using Taguchi Methods
Authors: Lin Ju Hong , Kuo Jui Chih , Lin Yi Jen , Chen Ting Yu , Sung Wen Pei
Published: December 2010

The production of bacterial cellulose (BC) from Gluconacetobacter xylinus could be improved by the Taguchi method. Both the initial pH and glucose concentration are the important factors to affect the production of the BC. The optimum combination of these factors and levels is the G. xylinus ATCC 23768, YPD as the basic growth medium, initial pH=4.5, glucose concentration = 5% (w/v), acetic acid concentration= 1.5% (v/v) and liquid height=7.2 cm. After the modified of factors and the levels, the maximum BC concentration and wet film thickness could be increased 37.5% to 0.557 g-dry cellulose/L and 39.0% to 3.92 mm, respectively.
Research on the Integration of CAD and MIS Systems Based on Flexible Manufacturing Model
Authors: Tian Jun , Zhong Shou Yan , Han Li Fa
Published: December 2010

The enterprise clusters are many enterprises in the same region, which are centralized to produce the same mass products. In the context of globalization, the enterprise clusters are becoming an important force of the leading world economy. Based on investigating and analyzing for the enterprise clusters in south China, the local area networks of the enterprise clusters can be built by using multi-level distributed computer system. The CAD and MIS systems are integrated into the local area networks of the enterprise clusters so that the flexible manufacturing systems can gain manufacturing data from the integrated systems. So, the integrated systems greatly improve the productivity of the enterprise clusters. The CAD and MIS system integration model of intelligentization has been dwelt on in this paper.
Product Integrated Innovation Based on Functional Hybridization
Authors: Zhang Tao , Liu Fang , Jiang Ping
Published: December 2010

Functional hybridization is an effective approach to integrated innovation. Two types of functional hybridization are discussed, which are close hybridization and remote hybridization. Analyze the contradictions existed in the functional hybridization and the approach that solves them. A process model of product integrated innovation based on functional hybridization is proposed and a case study illustrates the innovation process.
CIM-Based System Integration and Multi-Agent Modeling for Life-Cycle Smart Grids Assets Management System
Authors: Sun Rui
Published: December 2010

Life-cycle assets management (LCAM) is promising for improving power system efficiency and reliabilities, lowering life-cycle costs of smart grid. This paper, after investigating and redesigning traditional assets management processes with integration-centered optimization, puts forward a life-cycle assets management system model with multi-agent style, in which life cycle analysis (LCA) can be executed with collected and retrieved data from heterogeneous agents in complex multi-level environment. Related critical issues are also discussed about system modeling and implementation. Finally, technical solutions are proposed about agent communication mechanisms and information security. Research results can be extended to enhance information capacities in related fields.
Optimal Design and Simulation on the Major Linkage Parameters of a Harvesting Manipulator
Authors: Cui Yu Jie , Hua Jian Ning , Shi Pu
Published: December 2010

A general optimization methodology for the optimal design of robotic manipulators is presented and illustrated by its application to a harvesting manipulator. The optimization design of the manipulator framework and structure is made according to the tomato' s growth circumstance and distribution space.The workspace of the manipulator is carried out and simulated through the Monte Carlo method. Simulation results show that the manipulator with 4 degree- of- freedoms meets the expectations for picking tomato in greenhouse. The rationality of the structure and frame is validated.
Kinematics Analysis and Simulation of a 4-DOF Manipulator
Authors: Cui Yu Jie , Hua Jian Ning
Published: December 2010

Detailed analysis is given to kinematics of a 4-DOF manipulator. Forward and inverse kinematics of the manipulator is performed through Denevit and Hartenberg method. Kinematics equations are obtained, whereupon mathematic formulas are provided for the manipulator control. The effectiveness of kinematics equations is verified by the Robotics Toolbox simulation of the Matlab.
Evaluation of Urban Public Transportation System Based on Support Vector Machine
Authors: Sun Hui , Zhang Zhao Jun , Zhou Ying , Fan Zhi Qing
Published: December 2010

Evaluation of urban public transportation system plays an important role in developing urban public transportation system. When evaluating urban public transportation system, Support vector machine method can overcome the subjective problem of setting target weight, which is difficult to be solved by fuzzy comprehensive evaluation. Evaluation index system can be established according to the procurability and the effectiveness of the index. By studying several bus systems, the effectiveness of support vector machine evaluation could be proved, which shows that support vector machine model is applicable for the evaluation of urban public transportation system.
Fault Simulation Research of Hydraulic SOV Based on AMESim
Authors: Yang Jian Bo , Yang Qi Hua , Liu Gang Hai
Published: December 2010

Aim at on-line monitoring of hydraulic SOV's faults, the simulation model of SOV's test oil circuit was established base on hydraulic simulation software AMESim. By injecting fault information into the model, calculating the various response of the test system, through analyzing the simulation result, the relationship between system response and the fault was acquired. The blockage could be judged by analyzing the valve's current curve, while leakage could be assured through analyzing pressure fluctuation. The result demonstrated that this kind of simulation can simulate all kinds of fault response of the SOV.
Calibration of Line Structured Light Sensor for Robotic Inspection System
Authors: Wu Xiang , Li Ai Guo , Wu De Feng , Ma Zi
Published: December 2010

With the development of the green manufacture, a robotic inspection system is presented to meet the requirement of remanufacturing engineering. It solves the problem of acquiring the information of the three dimensions (3D) shape feature in a timely and effective manner. As to set up this system efficiently, a calibration approach of the main part of the system, the line structured light sensor, based on a six degree of freedom (6-DOF) robot is proposed. This approach takes the advantage of the flexibility of the robot for simplifying the traditional sensor calibration approach and generates the calibration control points with concentric circle to refine the precision of locating its center. The actual experiment demonstrates that this approach is suitable for field calibration with conveniences and good accuracy.
Reconfigurable Intelligent Instrument Based on FPGA
Authors: Gao Cheng Jin , Sheng Sheng , Zhao Liang Liang
Published: December 2010

In this paper, we design the FPGA-based reconfigurable intelligent instrument which has eight different functions through hardware reconfiguration and software reconfiguration. Hardware reconfiguration is realized through loading different configuration data for FPGA. Software reconfiguration is realized through using reconfigurable application frame technology. We also develop the software demo system of FPGA-based reconfigurable intelligent instrument using Labwindows/CVI which has three functions. The orientation of this paper is the design in module level reconfiguration, to lay the foundation for building the reconfigurable automatic test system.
Stability Analysis of Supply Chain Cooperation Contract under Asymmetric Information
Authors: Ma Xin
Published: December 2010

The stability of cooperation contract is the result of abandon opportunistic behavior in the process of repeated games among the enterprise and the other subjects in the supply chain from long-term interests, and is also the foundation of healthy development for the whole supply chain. But in real life cooperation contract instability everywhere for a variety of reasons, such as ethical considerations, institutional factors, cultural factors and special reasons during the transition period and so on. From the perspective of information economics and game theory, the main game process of cooperation between enterprise and the other subjects in supply chain is not only the game of information, but also the game of interests. Information structure and the interesting structure are the important factors for the subjects of the game of the implementation of decisions and the basic contractual constraints for cooperative game equilibrium. Cooperation behaviors among the enterprise and the other subjects in the supply chain were studied on the basis of game theory, and the stability of cooperation contract is also being discussed in this paper.
Evaluation and Decision Making on Advanced Manufacturing Modes Based on Object-Based Knowledge Mesh and User Satisfaction
Authors: Xue Chao Gai , Cao Hai Wang
Published: December 2010

This paper deals with the evaluation and decision making on advanced manufacturing modes based on the object-based knowledge mesh (OKM) and user satisfaction. Firstly, the fuzzy function-satisfaction degree relationships of the users’ requirements for the OKM functions are defined, and so are the multiple fuzzy function-satisfaction degrees of the relationships. Secondly, operations on both fuzzy and multiple fuzzy function-satisfaction degrees are proposed and clarified. Then, the evaluation on advanced manufactruing modes based on OKM is given. And finally, the evaluation and decision making methods are illustrated by an example to show the validity of the proposed method.
Design and Implementation of WSN Visualized Management System
Authors: Jiang Yu , Liang Yan Chun , He Li Li , Cao Ying Hui , Hu Cheng Quan
Published: December 2010

The wireless sensor is a kind of self-organizing network. It has a lot of nodes which were distributed widely. So the location of these nodes is difficult to be observation directly. In order to solve the above problems, in this paper, the visualization management system of the wireless sensor network (WSN) was designed. Therefore, the overall structure of the self-organizing networks was described easily. It provided a lot of functions for the large amounts of data which was gained from the node detection, such as storage, management and statistics. The design feature is that not only the network topology was showed, but also the collected data was analyzed visually. Therefore, we can use the WSN more conveniently. The proposed system enables the WSN more accessible and friendly. Furthermore, it has played a very important role in promoting the use of the WSN widely.
Yield Management with SD Model Based on Customer Lifetime Value in Semiconductor Industry
Authors: Han Guang Hua , Dong Ming
Published: December 2010

A challengeable environment of semiconductor industry can be characterized by uncertain demands, the long manufacturing lead-time, the expensive capacity cost and relatively short life cycle, all of which means significant capital and big risk. It is critical to design a simple and useful approach for yield planning. Since system dynamics (SD) is an approach to understanding the behaviors of complex systems, this paper presents a system dynamic model to determine the optimal yield of the semiconductor manufacturing system. In the paper, we introduce customer lifetime value (CLV) as a measure of revenues to achieve the long-term profits, rather than decisions on maximum short-term profits. The results show that SD is an effective simulation approach, and several interesting and useful insights are found.
Machine Tool Selection Based on AHP and ACO
Authors: Li Tie Gang , Fu Chu Lin , Guan Peng , Yu Tian Biao , Wang Wan Shan
Published: December 2010

Aiming at uncertainty of process plans in the process decision making, the paper introduced a method based on ant colony optimization (ACO) to find out the set of optimal solutions for multi-objective machine tool selection. The Analytic Hierarchy Process (AHP) was applied to simplify process decision making plans, and the structural diagram of AHP was made up according to the different demands of manufacturing engineer. By means of the examples the different elements to different manufacturing processes are comprehensive evaluated, and the most splendid process scheme is evaluated, meanwhile the feasibility of the proposed method applying process decision making is verified.
An Agent-Based Framework for STEP-NC Controllers of CNC Machine Tools
Authors: Liu Ri Liang , Zhang Cheng Rui
Published: December 2010

STEP-NC is a promising data interface for CNC, by which a comprehensive set of information regarding the product to be manufactured can be conveyed for the first time to the shop floor. In this paper, the new data model is briefly overviewed and analyzed. Then functionalities and considerations as for implementation of STEP-NC controllers are identified, followed by a conceptual framework proposed for such STEP-NC controllers for a new breed of CNC machine tools featuring autonomy and cooperation. The proposed system is constituted with a planning agent and a machining agent. The former is designed to take responsibility to cooperate with the external systems, to prepare all the data needed in machining and schedule them into unit tasks, while the latter, as one of the planning agent’s local control modules in light of an excellent combination of functionality and reliability, controls the machine tools adaptively. The working mechanism of the whole system is also introduced with an illustration of the operational flow.
Numerical Simulation of MEMS Stirling Cooler
Authors: Song Wen , Wang Xian Zhou , Yue Lei , Zhang Zhi Guo
Published: December 2010

The heat transfer and the fluid dynamics characteristics of subsonic gas flows through micro-channels are examined using numerical method. Detailed analysis on the Stirling MEMS device has been examined for the feasibility of the performance. The 1-D Stirling engine design code was utilized to provide basic information to meet the design parameters and criteria. Furthermore a 2-D CFD code has been used to perform a detailed analysis. The simulation results show that the numerical method used here could be used for the prediction of MEMS performance before experimental test and manufacture process start.
Synchronization Motion of Four Supports Hydraulic Platform with Unbalanced Loading and Uncertainties
Authors: Ling Xuan , Wang Xu Dong
Published: December 2010

Radar leveling system is the key equipment for improving radar high mobility and survival capability. In this paper, an integrated hybrid controller, comprising of a sets of fuzzy cylinder controllers and one synchronous neural controller, is proposed for a antenna trailer of radar with four points supporting, which is driven by one hydraulic oil supply, to achieve synchronization motion under he various conditions of system uncertainties and disturbances. A new control strategy for better synchronization performance is proposed and a self-adaptive learning algorithm to adjust the weights of the neural network, is also derived. To verify the effectiveness and potential of the proposed controller, a series of experiments were made. Experimental results have demonstrated its high accuracy synchronization performance and fast dynamic response as well as stability of the leveling servo system. The hybrid controller can drive the radar truck leveling platform accurately, quickly and stably.
An Open CNC System Based on Motion Controller
Authors: Yang Wei Dong , Chang Jiang
Published: December 2010

Making a study of the design of a NC inserting PC open CNC system from the aspect of hardware and software, this paper adopted a programmable multi-axis controller (PMAC) to construct a hardware platform for the open CNC system on the mode of “PC + motion controller”. Introduction was made to a kind of way of implementation of the open CNC system. The developed system can satisfy the experimental requirements of the university’s numerical control laboratory and also be used to rebuild CNC systems.
Study on Supplier Selecting System Oriented Networked Manufacturing
Authors: Lui Zi Xu , Yu Tian Biao , Zhang Jing Qiang , Wang Wan Shan
Published: December 2010

This paper analyzes the characteristics of supplier selection base on network manufacturing environment. The requirements of supplier evaluation and selection function of the system were analyzed too. Supplier evaluation and selection of system architecture and workflow was studied oriented networked manufacturing environment. Base on the theoretical study a prototype system was developed and the main function modules were introduced. This paper provides a theoretical and technical reference to develop efficient and practical supplier evaluation and selection system to meet the requirements of networked manufacturing.
An Investigation Hydrodynamic Fluid Pressure at Wedge-Shaped Gap between Grinding Wheel and Workpiece
Authors: Li Chang He , Li Jing Yao , Hou Ya Li
Published: December 2010

In the grinding process, conventional method of flood delivering coolant fluid by a nozzle in order to achieve good surface integrity. However, hydrodynamic fluid pressure can be generated ahead of the contact zone due to the wedge effect between wheel peripheral surface and work surface. In the paper, a theoretical hydrodynamic pressure modeling is presented for flow of coolant fluid through the grinding zone in flood delivery grinding. Moreover, coolant induced force can be calculated by integrate the hydrodynamic pressure distribution over the whole contact length. The theoretical results show that the hydrodynamic pressure was proportion to grinding wheel velocity, and inverse proportion to the minimum gap between wheel and work surface and the maximum pressure value was generated just in the minimum gap region in which higher fluid pressure gradient occuring. It can also be concluded the pressure distribution was uniform in the direction of width of wheel except at the edge of wheel because of the side-leakage.
The Intelligent Question Band Management System of Engineering Graphics for Multiobject
Authors: Du Shu Xing , Xue Min , Luo Bin , Lin Chun Ai
Published: December 2010

By utilizing object-oriented technology and unified data structure, the intelligent question band management system of engineering graphics for multiobject (IQBMS-EG) has been implemented. In order to ensure system security and realize resource sharing, the authorities of different objects are given properly. In the IQBMS-EG, besides the conventional modules of users management and the test question management, the test paper management module has been designed to group, analyze and typeset test papers. Of all, grouping test papers can be automatic or non-automatic, and automatic grouping test papers is achieved by using genetic algorithm, which makes procedure more objective, efficient and intelligent. For students, a users record management module is designed specially, which can realize special evaluation and comprehensive evaluation. In the paper, the design idea and mainly realize technology have been presented.
Parallel Iterative Methods for Nonlinear Programming Problems
Authors: Chen Zhong
Published: December 2010

In this paper, we present two parallel multiplicative algorithms for convex programming. If the objective function is differentiable and convex on the positive orthant of , and it has compact level sets and has a locally Lipschitz continuous gradient, we prove these algorithms converge to a solution of minimization problem. For the proofs there are essentially used the results of sequential methods shown by Eggermont[1].
P-Type Adiabatic Sequential Circuits for Leakage Reduction of Nanometer Circuits
Authors: Jiang Jin Tao , Zhang Yu , Hu Jian Ping
Published: December 2010

With rapid technology scaling, the proportion of the leakage power catches up with dynamic power gradually. The leakage dissipation through the gate oxide is becoming an important component of power consumption in currently used nanometer CMOS processes without metal gate structure. This paper presents adiabatic sequential circuits using P-type complementary pass-transistor adiabatic logic circuit (P-CPAL) to reduce the gate-leakage power dissipations. A practical sequential system with a mode-10 counter is demonstrated using the P-CPAL scheme. All circuits are simulated using HSPICE under 65nm and 90nm CMOS processes. Simulations show that the mode-10 counter using P-CPAL circuits obtains significant improvement in terms of power consumption over the traditional N-type CPAL counterparts.
The Design and Realization for the Information Manage System of Hospital
Authors: Wang Huan
Published: December 2010

By the design and realization for information manage system of hospital, the author put forward the technology which can realize information management in regional hospital through computer network, this technology can build a multiple module management system which make the outpatient service magnetic card system as center. This information management system can rapport the register, see a doctor, payment, dispensing, examine and other bottleneck problem which can affect the overall of outpatient service’s work, so, to reduce the labor intensity and simplify the procedure of seeing a doctor, increase the economic benefits at the end.