bluuebunny/crossref_metadata_2025 huggingface dataset:
Implementation and Optimization of Tracking System on Dual-DSP
Authors: Wu Qiang , Li Shi Dong , Sun Le Gong , Zhou Yu Fei
Published: June 2011

The paper provides a solution of tracking system on dual-DSP(ADSP-BF561, ADP-BF548), and gives the method of implementation and optimization. The system implements the complex tracking algorithm in real time on the high-performance dual-core ADSP -BF561. The multimedia processor ADSP-BF548，which has integrated a pixel composer and many interfaces internally, is used to control the entire operating of the system and complete the task of input and output flexibly. With the help of the code and decode chips ADV7181 and ADV7171, which have strong ability of adaption to varieties of video formats, the system has the features of easy- expansibility, strong adaption, stabilize, function, small size and low consumption.
Application of Embedded System to Intelligent Control Based on CMAC-SoPC
Authors: Juang Jih Gau , Yu Zong Ru
Published: June 2011

This paper presents a control problem of a twin rotor MIMO system (TRMS) based on the system on programmable chip (SoPC). The control system utilizes the cerebellar model articulation controller (CMAC) as a compensator for PID control. The CMAC has fast learning capability that can provide real time compensation for PID controller. In the hardware implementation, HCTL-2016 is used to encode AB phase voltage into digital signals. Verilog HDL is utilized to encode program that can receive and trigger signals from HCTL-2016 on Altera Nios II FPGA. By coding the programmable chip control signal can be passed to the controller. The processed signal is converted by a D/A converter and is transferred into voltage. The command signal is then sent back to the TRMS to control its movement. Experimental results show that the hybrid CMAC-PID can control the TRMS to reach desired position and track specified trajectory efficiently.
Design Alternatives of Intelligent Camera System for Check Parts at the Intelligent Manufacturing-Assembly Cell
Authors: Danišová Nina , Ruzarovsky Roman , Velíšek Karol
Published: June 2011

In this contribution are presented designs of intelligent camera systems at the intelligent manufacturing-assembly cell. Intelligent manufacturing-assembly cell is situated at the Institute of production systems and applied mechanics. For this intelligent cell was designed intelligent camera system with industrial camera. All design alternatives of check station with camera system go out knowledge of intelligent systems. Intelligent systems as systems of new generation are loading gradually at mechanical production, when they remove person from production process and they shorten production times. Intelligent systems are situated to day at all production processes of large industrial companies.
Adaptive Infrared Image Enhancement by Combining Differential Evolution with Stationary Wavelet Transformation
Authors: Zhang Chang Jiang , Zhou Yan
Published: June 2011

Considering noise and low contrast of infrared image，an efficient nonlinear adaptive enhancement algorithm，which is based on differential evolution (DE)algorithm and stationary wavelet transform (SWT)，is proposed. Evaluation function is constructed by combing information entropy，signal-noise-ratio with standard deviation of enhanced image. A nonlinear transformation function is designed to enhance the contrast of the infrared image. The optimal transformation parameters are determined by combing DE algorithm with the constructed evaluation function. The proposed algorithm can efficiently enhance the contrast of the infrared image while have a good robust to noise. Experimental results show that the proposed algorithm is better than multi-scale nonlinear enhancement algorithm，stationary wavelet nonlinear enhancement algorithm and histogram equalization algorithm in overall performance.
Image Matching Based on Chain Code of Image Edge Tangent Direction Angle
Authors: Gao Jian Shu , Qiao Wen , Han Ren Yi
Published: June 2011

In order to solve problem that the image which is under different wavelength channels can’t match in the ice detection whit the near infrared, this paper describes a solution of image matching which based on the chain code of angle related to a tangential direction of image edge. By extracting the edge with Canny, calculating the chain code of angle and differences, computing the relative chain code of direction angle and comparing the relative chain code, the possible rotation angle between the images will be gained. After rotating the image and differencing the corresponding coordinates, the shift amount can be obtained. Ultimately image match can be achieved. Experimental results show that this method is accuracy and have certain inhibition of noise.
A Rapid Auto-Caliberation Method in Projector-Camera System
Authors: Yang Tao , Liu Yue , Lu You
Published: June 2011

A precise, fast, and fully automatic calibration method is proposed to address the shortcomings in currently used large-scale interactive camera-projector systems. These shortcomings include a small number of calibration points used in manual calibration, large errors, huge time consumption, and lack of professional quality operations. The proposed method applies mechanical wavelength switching in the projected image to capture multi-regional vertices. The co-linearity of each point in the projected images is calculated to determine the actual location of the interactive points in the projected image. The point-by-point computation adopted in the method promotes the automatic elimination of uncorrectable systematic errors in large-scale optical devices. The automatic error elimination not only increases the accuracy of the interactive system and reduces the complexity of system installation, but also increases the flexibility of the interactive system.
Cascading Flowline Layout Design with Capacity Constraints
Authors: Zhou Jin
Published: June 2011

This paper describes a computer-assisted approach that integrates flowline layout design and functional layout capacity planning. In this layout problem of flow manufacturing, the parallel arrangement of the flowlines allows the placement of linear material handling aisles between pairs of adjacent flowlines. An algorithm based on longest common subsequence analysis is proposed and validated using a case study. At the same time of layout planning, the need for machine duplication is examined with capacity constraints.
XML Schema Normalization Design
Authors: Zheng Hua Li , Zhong Hao , Yan Shu Ang
Published: June 2011

Two kinds of problems in designing XML schema are analyzed and the valid structure and well structure in structural level of XML normalization are defined. A valid-structured XML schema guarantees that it can be instanced, and well-structural XML schema guarantees that all the elements in it are significant. Based on the analysis of element relationship graph, the judgment method of valid structure and well structure is put forward and some theorems are presented.
Research On UAV Path Planning
Authors: Zhu Hong Guo , Xin Hai , Zheng Chang Wen
Published: June 2011

Path planning is key to performance of UAV. Research results are summarized according to tactical planning and mission planning. The disadvantages of solutions existed are pointed out and possible research areas are suggested.
A Multipath Planner for UAV Based on Pareto Optimization
Authors: Zhu Hong Guo , Xin Hai , Zheng Chang Wen
Published: June 2011

A multipath planner for UAV based on Pareto optimization is proposed to overcome the disadvantage of planners existed. Multipath planning is modeled as a constrained multiobject optimization problem. A Pareto solution of multipath for UAV is generated by optimizing several object functions at the same time. The simulation results demonstrated the feasibility of the approach.
Life Prediction of Rolling Bearing Using Genetic Algorithm
Authors: Chen Peng , Koide Yuki , Li Ke , Satonaga Noriaki
Published: June 2011

Rolling bearing is the most part used in rotating machinery of industrial plant. The condition diagnosis technology of rolling bearing is very important and indispensable for the plant safety and operation stability. The purpose of this study is to improve the accuracy of the life prediction for a rolling bearing. The paper proposes a searching method for the optimum mathematic function for the high accurate prediction by using the genetic algorithms (GA).
Research on Inverse Kinematic Design of a Certain Hydraulic Stewart Platform
Authors: Qu Zhi Yong , Ye Zheng Mao
Published: June 2011

Stewart platforms have recently attracted attention as simulator and machine tools because of their conceptual potentials in high motion dynamics and accuracy combined with high structural rigidity due to their closed kinematic loop. This paper, composed of inverse kinematic design and optimization, attempts to ground the foundation on dynamics design and choice in the future.
Design of Noise Monitoring System Based on WebGIS
Authors: Huang Yan , Zhang Yan , Cai Qun
Published: June 2011

This paper firstly analyzed the urgency and technical support of the establishment of a noise monitoring system, then analyzed the three-tiered architecture of the noise monitoring system, and designed the function and database of the system. Based on this, this paper designed and developed the noise monitoring system using the technology of WebGIS, implemented the integration of GIS and noise monitoring system in the Web.
Adaptive Fuzzy PID Control Design and Simulate of Main Steam Temperature of Power Plant
Authors: Cheng Qi Hua , Xie Nai Jun
Published: June 2011

Large-scale thermal power units in the main steam temperature as the controlled object with a large delay, large inertia, nonlinear and time-varying characteristics, leads to its control difficult, and make traditional PID control method is difficult to achieved good. Fuzzy systems articulate knowledge, reasoning similar to the human mind the advantages of fuzzy PID control strategy is proposed and used as a powerful mathematical ability of fuzzy PID control system simulation, the result indicate the fuzzy PID algorithm has the ability of fast, immunity, and robust.
Controlling Power Switch System by P300 Visual Evoked Potential
Authors: Wang Ching Sung , Liu Chien Wei , Wang Teng Wei , Chang Chih Chung , Lin Jia He , Lin Wei Jie , Jheng Siang Jyun
Published: June 2011

Because of crowed population, urban people live in a relatively narrower living environment. They currently set the electric socket at the corner of building, which may causes some using trouble especially for elders and disabler. Hence, we combining RF wireless transporting system with electric encephalon wave suggest a remote household electrical appliance controller aiding handicapped and senior to control every household electricity. It not only achieves carbon reduction, but also promotes community well-being.
Sliding Mode Control of Electronic Throttle Valve
Authors: Yuan Rong Di , Du Quan Quan , Feng Hui Zong
Published: June 2011

Electronic throttle is a typical nonlinear device because of the nonlinear reset springs. Normal sliding mode control usually leads to chattering. To reduce chatters, a sliding mode control method based on compensation of nonlinearity is proposed, in which an observer is designed to observe and compensate the nonlinearity. A Lyapunov function was constructed to prove that control system is stable. Simulation and experiment results indicate that the proposed method can reduce chatters and achieve good control robustness.
A Real-Time Model of Crush Natural Gas Turbo Engine
Authors: Yuan Rong Di , Du Quan Quan
Published: June 2011

A new approach is presented in this paper in which a Crush Natural Gas (CNG) Turbo Engine model based on Mean Value Model and transient dynamics are included. The model could simulate engine speed, torque, dynamic load, electronic throttle, turbo, temperature and emission conditions. The model was downloaded and run in a HIL platform joint with Labview and a CNG engine ECU. Simulation results indicate that it acquires good balance between Real-time response and dynamic accuracy, besides good comprehensive running status parameters including dynamic, mechanic, thermo and combustion. The model made it possible for electronic engineers to begin their works earlier to find solutions for power loss, high working temperature of CNG engine with more flexibility and lower bench test expense.
Digital Image Processing Applied in Measuring Industrial Product With Cylinder Holes
Authors: Yu Hong Juan , Xu Xin Min , Su Wan Yong , Chen Xiao Long
Published: June 2011

The research way is discussed in this paper is to use digital image processing technology to measure the coordinates (x0, y0)，the radius distribution for industrial product with cylinder Holes， as well as the machining dimension error which forms as a result of all sorts of disturbances in machining course, as the small eccentricity、the ellipticity、three side prism 、four side prism and so on , by this we can also find a just way to improve the numerical control machining precision.
Video-Tag Detection and Recognition
Authors: Ye Li Hua , Yin Hai Ming
Published: June 2011

In this work, we present a video-tag detection and recognition method. According to the duration of the video, choose an appropriate strategy to sample the frames. After the candidate tag of every frame is computed, a median filter algorithm is employed to get the tag boundary. At last the binary video-tag is determined by a multi-frame-based analysis algorithm. After scaling the binary tag image to the standard size, a full image-matching algorithm is used to recognize the tag. The experimental results indicate the proposed video-tag detection method has high recall ratio and precision ratio, and the image-matching-based video-tag recognition method performs much better than the traditional OCR methods.
Shock Response Analysis for a Propulsion Shaft System in Time Domain
Authors: Wang Yan Qing , Yu Rong , Chen Rong Ling
Published: June 2011

By a transfer matrix-Newmark formulation iteration method, shock response analysis in time domain was performed for a propulsion shaft subjected to base-transferred shock excitations. In order to eliminate the numerical instability of TMT, the transfer vector is used, instead of the traditional one. Influences of gyroscopic effect and initial stress on response were investigated. Main conclusions are that gyroscopic effect has no obvious effect on shock response. Initial stress increases the total shock response, but the total response isn’t equal to the absolute sum of initial stress and shock excitations acting alone. Both ends of the shaft, that are propeller and thrust bearing locations, are weaker to bear shock excitations. Maximum amplitude of response occurs at the propeller location.
Risk Assessment Model with 2-Tuple Temporal Linguistic Variable
Authors: Zhou Sheng Han , Chang Wen Bing , Xiong Ze Jian
Published: June 2011

The paper aims to develop a risk assessment model with the fuzzy temporal information. The traditional model assess risk with the risk matrix method. And the method rank the risks without regard to the with the temporal information to assess the risk. The model integrates the method of 2-tuple linguistic and temporal linguistic variable. The improved concept defines the transition symbols operator as the projection of temporal term on the fuzzy linguistic variable. The new model may deal with the temporal information in the fuzzy linguistic judgements. The emprical research give a example by applying the new method. The result of example show that the new model can provide the worthwhile temporal information in the assessment result. temporal element temporal element temporal element temporal element
Supply Chain Management (SCM) and Small and Medium-Sized Enterprises (SMEs): Is it a Myth?
Authors: Tumaini Mujuni Katunzi , Zheng Qin
Published: June 2011

Adoption of SCM innovations by SMEs is a key critical issue addressed by this study. The study used an explorative study in measuring to which extent Tanzanian SMEs adopt SCM practices and whether there is a trend towards increased adoption of these practices over time. In doing so, test propositions on the differences between manufacturing firms, and between medium-sized and small enterprises were done. Furthermore, the motives of SMEs to engage in SCM innovations and perceived management challenges are explored. From analysis of our findings, we conclude that, SMEs still lag behind larger firms in utilizing the benefits of SCM practices. SMEs still face obstacles like knowledge, financial resources, technology and the like. Lack of trust between small firms has been identified as a major non-financial obstacle to information sharing and integration with other suppliers in the chain.
Data Processing of Laser Metal Deposition Shaping Technology: Part III. Filling Scanning Path Research
Authors: Zhang Kai , Shang Xiao Feng
Published: June 2011

This document investigates two kinds of generation algorithm of filling path, namely the subarea parallel reciprocating scan and the contour parallel scan, and proposes a kind of generation algorithm of subarea scanning vector. In the process of the generation of scanning vector, this algorithm has no need to perform area judgment to every scanning vector, and promotes the algorithm efficiency. Meanwhile, the connecting path between scanning areas was optimized, thus reducing the empty run, increasing the machining efficiency, and further improving the forming quality of the inside of metal parts.
One Circuit Design for Suppressing Surge Current of Switching Power Supply
Authors: Li Jin Ming , Xie Xu Yu , Zhao Min , Ma You Chun , Tan Qiu Lin , Zhang Qing Zhi , Wang Li
Published: June 2011

Based on the analysis of the causes for surge current of switching power supply and its harm, a circuit design suppressing surge current, which uses NMOSFET as the second switch , is represented in this paper. Test results show that: the method can suppress the surge current to a large extent and reduce the impacts on equipments. Due to improving the safety and the reliability of equipments, this circuit design is more popular in circuit design for suppressing surge current of switching power supply.
Estimation about Contribution from Information Technology in China’s Economy
Authors: Li Shi
Published: June 2011

To interpret the role of information technology (IT) in China’s economy, the paper focuses on examining the growth contribution from information technology with Production Probability Frontier and Dual Method during the period from 1980 to 2003. Our results indicate that the Chinese economic growth rate devoted to IT investment has risen steadily since 1990. The contribution share of total factor productivity (TFP) from IT in China has increased sharply after 1995, while the TFP growth rate from non-IT sector dropped at that period.
The Study on Building a Rational Evaluating Index System for the Industrial Structure
Authors: Liu Shu Ru , Wang Xing Kui
Published: June 2011

Rationality of the industrial structure is the essence of the economic development, as well as the key to promote the sustainable, steady, and harmonious development of the economy. Guided by the Scientific Development Concept and Sustainable Development Theory, this article has probed into the building of a rational evaluating index system of the industrial structure. It proposes a reasonable choice criterion of the industrial structure, which is based on the sustainable development with the coordination of “economy, society, resources, environment, and technology”. Accordingly, a set of rationale evaluating index system is designed, laying the foundation for the overall evaluation and measurement of the rationality level of the regional industrial structure.
China’s Human Capital and the Demographic Dividend
Authors: Song Shi Bin , Song Qi , Zhong Tao
Published: June 2011

Demographic dividend has contributed a lot to Chinese economic growth during the past 30 years. However, in recent years, the increase of population dependency ratio, with the constant “shortage of labors”, indicates that the traditional demographic begins to fade away. How to further search for the rest of the demographic dividend and defer the disappearance of the demographic dividend becomes a significant issue. It researches province regions on the degree of utilization of existing demographic dividend, which will be instructive for the relevant economic policies of making full use of the demographic dividend. In terms of contribution analysis, this present research is concerned with the postponement of demographic dividend and the influence on Chinese economic growth rate by human capital changes.
Mechanical Model and Analysis on Movement of Rock Strata between Coal Seams in Pillar Upward Mining of Left-Over Coal
Authors: Feng Guo Rui , Zheng Jing , Ren Ya Feng , Zhong Cong Ming , Kang Li Xun
Published: June 2011

Work out control measures for pillar upward mining of left-over coal, in view of coal floor movement, this paper analyzes theoretical foundation and mechanical properties of mechanical model on coal floor movement of rock strata between coal seams in pillar upward mining of left-over coal and presents a simplified corresponding mechanical condition. Taking into the relation between layer movement and time consideration, the PTh model is used to show its rheological properties. By using a two-dimension model, mechanical model of coal floor movement is set up and both ends of cantilever beam are fixed. Finally, subsiding partial differential equation is induced at different districts in pillar upward mining of left-over coal. After solving the equation, prediction model about law of coal floor movement at different districts is gotten in pillar upward mining of left-over coal, which provides a theory basis for further study on upward mining.
Control Research on Microgrid Systems Based on Distributed Generation
Authors: Che Yan Bo , Chen Jian
Published: June 2011

In this paper, the composition and structure of typical microgrid system are described briefly first. Different control methods of microgrid system and their advantages and shortcomings are analyzed in detail. The comparative analysis of different control methods is carried out. Finally, a practical control scheme of an example is proposed which provides a reference for related research and engineering practice.
Analysis of Experiments of Cutting Force and Improvement of Surface Properties for Al2O3 Ceramics Inserts by Ion Implantation
Authors: Wang Ming Hong , He Fa Jiang
Published: June 2011

The problem which people are following with interest all the time is how to improve the cutting properties and natural life of cutter. The feasible experimental analysis is done for Al2O3 ceramics inserts. The technique of N+ ion implantation is adopted in the experimentation, the practical formulae of cutting force are set up, and the cutting properties of inserts are compared and analyzed. An effective, simple and convenient method for changing the surface properties of inserts is obtained. All the tries are achieved with the aim of property melioration for ceramics inserts.
Hardware Design of Electronic Ignition System for Special Electromechanical Device
Authors: Luo Xiao , Luo Qing Sheng , Cao Yong Gang , Shi Lei
Published: June 2011

The electronic ignition system for special electromechanical device is composed of control module, analog switch circuit, ignition driver module and ignition module. The key point to make the system work quickly, real time, safety and accurately is the hardware design. Study on electronic ignition circuit design for special electromechanical device considering security design is employed to effectively increase the reliability and safety performance, which corresponding design idea and technical way can lay a theoretical and technical foundation for subsequent research.
Vehicle Engine Application of Bio-Diesel Manufactured from Waste Cooking Oil
Authors: Leu Jai Houng
Published: June 2011

This study is devoted to engine application of bio-diesel manufactured by transerification reaction with alkali process from waste cooking oil. The performance & pollutant emission of vehicle engine application are little different in the idle condition for the engine test of the garbage collecting trunk with PD (practical diesel), B20 (20% biodiesel mixture with diesel) and B100 (100% biodiesel). In the full loading condition, the pollutant degree is decreased obviously with the addition of biodiesel especially for full alternative B100 for PD. The CO emission is down 51%, the SOx emission is down 73%, the NOx is down 13%, and, the carbon participate emission is down 69% in this test. But, the decreasing motion horsepower (down 10%) and the increasing fuel consumption (up 11.3%) are the evidences that the above effect is focused on the healthy to the environment only.
Research and Implementation of Universal Mobile Middleware Base on Mobile Terminal
Authors: Liu Yong Shan , Li Jia Jin , Chen Yun Yun
Published: June 2011

Handle official business specifically for at present mature business system is moving the aspect deficiency, be applied or used universally having suggested that one kind of business system combines with displacement terminal appearance moves the middleware. And by the design studying the population having given the displacement being applied or used universally out the middleware, scheme composing module detailed design as well as important, have given out at the same time suitable match tier suitable match the algorithm, inquiry decomposition algorithm , inquire about the result XML form encapsulation algorithm, have realized middleware of that displacement system. The at last has verified the feasibility owing the centre being applied or used universally moving a middleware combining with some company's handling of goods and materials business system.
Properties Analysis of Process Composition with Shared Resources
Authors: Guo Yu Bin , Li Cheng You , Zhang Min
Published: June 2011

Process composition with shared resources is a kind of composition that all participants share common resources that cannot be consumed and must be returned after using. Properties of the composited process and conditions of property preserving of participants are studied in this paper. Moreover sharing graph of composited process is defined and constructed to judge whether the composition is structural sound or not. And devices to keep the structural soundness of participants are given also.
An Impact Resistant Design to a Special Vehicle
Authors: Chen Xin , Weng Ze Yu , Ding Hong Gang , Tang Xue Zhe
Published: June 2011

The objective of the study is to improve the impact resistant performance of a special vehicle’s front sliding plate. For this, a performance evaluation indicator called critical failure velocity is proposed in this paper. By regarding the impact velocity as the variable, this paper carried out a numerical simulation of the changeable stress and deformation due to the impact on the different front sliding plates which are made by aluminium alloy, high strength steel and special engineering plastics by ABAQUS／Expticit. In this way, the relationship between various impact velocities and maximum Mises stress on the front sliding plate can be got, and the critical failure velocities can be found through the relationship. Then, as a comparative analysis of various materials’ critical failure velocities has been made in this paper, the front sliding plate’s impact resistant design
Stability Analysis of the Series-In Series Hybrid Active Power Filter
Authors: Sun Yao Jie , Tong Li Qing , Lin Yan Dan
Published: June 2011

For the important characteristic of the system stability, a state-space averaging model of the series-in series hybrid active power filter (SHAPF) is constructed to analyze its system stability by traditional control strategy taking into account the effect of the time delay in the digital control system, inverter, low pass filter and second-order carrier-wave filter. Based on the analysis of the close-loop control model, the traditional control strategy of the series-in SHAPF is an unstable system. A new control strategy is proposed to reduce the impact of the high frequency current interference and improve its stability and filter performance of the series-in SHAPF. Validity and practicality of the proposed control strategy are proved by simulation analytical and experiment results from a 10-kW laboratory system.
Product Family Lifecycle Information Integration Model and its Application
Authors: Pan Xu Wei , Fu Li Jun , Wu Yi Ming
Published: June 2011

To solve the difficulties in managing lifecycle information on varieties of products in the customer demand diversity and personalization environment, a product lifecycle information management approach based on product family is put forward. A 3-Dimention Product Family Lifecycle Information Integration Model (PFLI2M) is proposed, which is composed of product main structure dimension, product dimension and lifecycle dimension, and the evolution process of the 3 dimensions is discussed. Based on the metadata method, unit information representation of PFLI2M is studied from the physical layer, logic layer, expression layer and the application layer. These methods are applied in lifecycle information management of sealing products.
Soft Sensing for Algae Blooms Based on Physical-Chemical Factors of Marine Environment
Authors: Zhang Ying , Zhao Xiao Hu , Li Cai Juan
Published: June 2011

Soft sensing can solve the problem of on-line measuring for some variables which are difficult to measure with common instruments commendably. Chlorophyll-a is an important index of water quality for seawater, which can indicate the state of algae reproduction, further more it can predict the disaster of red tide by prediction model. The content of chlorophyll-a of seawater is affected by many physical-chemical factors, this complex relationship among them is difficult to be described by ordinary mechanism expression. In this paper, we use Fuzzy BP model to describe this complex nonlinear system, and detect the content of chlorophyll-a by the method of soft sensing. The PCA(Principal Component Analysis) method had been used to reduce the dimension of the sample data, simplify the complexity of the model system, this method can make the model has a faster convergence rate and a relative low dimension. The experiment illustrates that the result of soft sensing for algae blooms can match the real changes of the content of chlorophyll-a in seawater basically.
Application of Data Maturity in Product Development Process Control
Authors: Zhou Qiu Zhong , Zha Hao Yu
Published: June 2011

In the concurrent and collaborative product development process, the realization of quantitative analysis and overall control of the development process management is the key and the difficulties in the current study. Through describes the concept and role of data maturity, a new methods to quantitative analysis and overall control of collaborative product development process based on the idea of data maturity was proposed in this paper. Base on the explanation of the theory of data maturity to control the process, the differences and relationship between data maturity and milestone was analyzed. The division method of data maturity level was discussed, and the corresponding relationship between each data maturity level and completion degree of the digital product model was illustrated also. In addition, the overall form of the product collaborative development process based on data maturity was provided. Finally, the detailed process between product structure design, process design and tooling design driven by each data maturity were explored, which realized the quantitative analysis and overall control of the product development process.
Research on the Pizeoelectric Driving Micro-Flux Valve Power Supply
Authors: Chen Hai Chu , Zhang Rui Hua , Xiong Gen Liang , Liang Fa Yun , Liu Ling Teng
Published: June 2011

In order to decrease output micro-flux ripple wave characteristics of the piezoelectric driven micro-flux valve, it carried out research on piezoelectric ceramics driving power supply. In the research, it especially designed the low-voltage and high-voltage stabilizing circuit, small signal amplifying circuit and power amplifying circuit. By applying the power supply, the function signal would be amplified to a high-voltage output to drive the piezoelectric ceramics stack (PZT) to control displacement of the micro-flux valve’s spool, and then realize precise control the micro-flux of the valve. At last, it carried out experimentations on the output characteristics of the power supply, and the experimental results proved the output signal of the power supply have excellent input-output linearity and small ripple wave characteristics, and the high-voltage output ripple wave error is less than 10mV. More over, it used the power supply to drive an 8×8×20mm PZT with capacitance 2.3, and measured the quickly discharging characteristics. The results prove the quickly discharging time is only 10.10ms when the driving voltage is 180V, which means the power supply has excellent quickly discharging characteristics.
An Optimization Method in Construction Schemes Comparison
Authors: Zhong Wei Qiu , Bao Xiao Lu , Dong Ai Ping , Zhong Wei Lei
Published: June 2011

By analysis on every construction phase, an optimization method is presented for choosing construction schemes with multi objects which can be used to compare the schemes. An example shows that the method is simple and feasible, and the results are reasonable.
Development of Innovative MIG Welding Technology
Authors: Zhu Jin Hong , Ding Gao Jian , Song Shu Zhong , Dai Le Yi
Published: June 2011

In recent years, remarkable progress has been made in the field of MIG welding technology. In this paper, three kinds of innovative MIG welding technology were introduced － pulsed MIG welding, double wire MIG welding and MIG hybrid welding. Recent development and achievements were summarized, including features of the various processes and applications. In the end, the future tendency was discussed.
Calibration of Probe of Cloud Droplet Based on Forward Scattering
Authors: Huang Xing You , Zhu Ya Zong , Bu Ling Bing , Lei Heng Chi
Published: June 2011

Probe of Cloud Droplet (CDP) based on forward scattering has the characteristics of high efficiency, simple structure, and it is the main instrument for small cloud particle (less than 50μm in diameter) detection. A CDP based on forward scattering was constructed in this paper. Calibration experiment and the measurement of the field of depth were conducted. To measure the depth of field, a pinhole adhered to a rotating disk which is fixed to multi-dimensional optical table is used. The pinhole can be seen as a particle appeared in the detection area periodically, as it moved across the laser beam, the depth of the field can be measured. Standard particles with known size were used to calibrate the system and Mie theory was used to calculate the intensity of forward scattering signal. In the end, combining the experiment results and the theoretical calculations, the response curve which can be used to inverse the size of cloud droplet was obtained.
Establishing Integration Process during Engineering Design
Authors: Lee Kuan Pei , Chang Andrew S.
Published: June 2011

This study proposed an integration process to incorporate sustainability issues into engineering design for construction projects. To facilitate use by engineers, the integration process was built on the traditional design process. Design work is the foundation for the integration process. Because engineers are familiar with design work and processes, the linkage between the eight design steps and six integration steps make the integration more concrete. The study results show that the integration process can help participants to incorporate sustainability issues, communicate with stakeholders, and achieve consensus, if followed rigorously. The integration steps, such as creation of the integration team and evaluation of alternatives, are similar to the elements dealt with in environmental impact assessment. Since sustainability integration is actually a decision-making and execution process, its management should have the attention of the government, construction owner, and integration team.
The Systems of Primary School Teachers Using PDA to Support Instruction
Authors: Fang Rong Jyue , Chang Yung Sheng , Tsai Hua Lin
Published: June 2011

That the advantage and restriction of using PDA to support teaching. Meanwhile, it probes into the cognitive will of teachers in Kaohsiung using PDA to support teaching. At first, developing the investigation meter of using cognitive will in PDA supporting teaching. The teachers in Kaohsiung information seed schools assist to investigate. There are 374 samples which are all effective samples. There is no invalid sample and returns-ratio 100%. Therefore, using One-way ANOVA analyses this effective questionnaire. The result of analysis will display teacher's experience period of service with PDA supporting teaching, and the difference of using will in network experience period of service. It shows: (1)「Perceived Usefulness」is the biggest influence factor of 「using will」in this research to the PDA supporting teaching. Next is「Perceived Easy of Use」. (2) 「Technical support」is also the direct influence factor of 「using will」. As regards this research sample, there are still 86.1% survey responsers who have not used PDA supporting teaching yet. Therefore, when users initially use the PDA supporting teaching system environment, they will have intensely the demand of “technical support” in the new technical installment, development and the use way. This is also a key point which the primary users are concerned. (3) The user, who has PDA support teaching experience, has stronger「using will」. (4) The user, whose network or computer period of service is longer, also has stronger「using will」. This research infers that PDA supporting teaching has brought more forward benefit.
The Ones that Use Film Teaching Cognition of Environmental Topic Systems of the High Pupil of Primary School of Grade and Attitude to Influence Are Studied
Authors: Fang Rong Jyue , Chiang Wen Jiuh , Tsai Hua Lin
Published: June 2011

With rapid change of science and technology, human life has brought a lot of progress and convenience. This progress has already brought serious and negative influence for our living environment. Because the mankind excessively utilizes science and technology in the environment, it derives a lot of environmental problems out. In addition, people have different faith and values so that it is unable to make the common understanding to its solution. Therefore, this research is to utilize film teaching cognition of environmental topic to attract people to pay attention about our living environment. The environmental topic of this research refers to relevant global warm topics.
Strategy of Repeats in DNA Sequence Assembly
Authors: Zhang Yan An , Xue Min Feng , Li Lin , Han Yue Qi
Published: June 2011

This study is a concentrated at the strategy of repeats in DNA sequence assembly. To deal with the sequences with repeats is a difficult problem in DNA sequence assembly. On basis of strategy learning about masking repeats，this study proposes a method based on mate-pair analysis, and a developing strategy on Amos platform.
A Hybrid Nonlinear Conjugate Gradient Method with Sufficient Descent Property
Authors: Cheng Wan You , Liu Xue Jie
Published: June 2011

In this paper, on the basis of the recently developed HZ (Hager-Zhang) method [SIAM J. Optim., 16 (2005), pp. 170-192], we propose a hybrid descent conjugate gradient method which reserves the sufficient descent property of the HZ method. Under suitable conditions, we prove the global convergence of the proposed method. Extensive numerical experiments show that the method is promising for the test problems from the CUTE library.
Scheme Design of Glass-Stacker Machinery Based on Module Design Method
Authors: Tian Ying Zhong , Liu Guang Chen , Li Ming , Li Wei
Published: June 2011

In this paper, the scheme design was studied primarily based on module design method. Moreover, with the black-box method, Analytical Hierarchy Process (AHP) and the calculation of interrelation, the scheme design process was discussed. The framework provided the fundament research of the glass-stacker machinery.
Fault Diagnosis of Rolling Bearing Based on Rough Set and Neural Network
Authors: Yan Jun Rong , Min Yong , Cui Xia , Huang Yan
Published: June 2011

Artificial neural network was one of the most important methods in intelligent fault diagnosis because it has the performance of nonlinear pattern classification and the capacity of self-learning and self-organization, but it can not judge redundancy and usefulness of information. Rough set can reduce the knowledge of information system and dislodge redundant information. In this paper, fault data of rolling bearing was reduced by the greedy algorithm of rough set. Training data and test data of BP neural network had been reduced by rough set. By comparison of two test result about simply data and original data, it was indicated that resolving power was unchanged and database was simply.
Vari-Gram Language Model Based on Category
Authors: Yuan Li Chi
Published: June 2011

Category-based statistic language model is an important method to solve the problem of sparse data. But there are two bottlenecks about this model: (1) the problem of word clustering, it is hard to find a suitable clustering method that has good performance and not large amount of computation. (2) class based method always lose some prediction ability to adapt the text of different domain. The authors try to solve above problems in this paper. This paper presents a novel definition of word similarity. Based on word similarity, this paper gives the definition of word set similarity. Experiments show that word clustering algorithm based on similarity is better than conventional greedy clustering method in speed and performance. At the same time, this paper presents a new method to create the vari-gram model.
Thermal Load Analysis of Piston in a Biogas Engine
Authors: Wu Yi , Peng Yi Qiang , Shi Chong Huai
Published: June 2011

As a kind of new renewable energy, biogas is receiving more and more attentions. However, its combustion duration is longer than diesel, which causes the bigger thermal load of engine. A geometry model of a biogas engine’s piston is set up in Proe 4.0. The temperature fields, thermal stress and thermal deformation of the piston are calculated using ANSYS 10.0. The result shows that the thermal load of biogas engine is still within the thermal strength of the material, thus provides supporting evidence for the popularity of biogas.
Robotize Kinematics Modeling on the Loading Mechanism of Back-Loaded Compressed Dust Cart
Authors: Ding Ji Bin
Published: June 2011

The three-dimensional geometric kinematics model of the loading mechanism of back-loaded compressed dust cart is established based on the robot kinematics principle and Denavit-Hartenberg（D-H） method. In this paper, the loading mechanism's principle is discussed and it’s institutions simplified robotize model is established, coordinate transformation process and gesture of the skateboard and scraper of the loading mechanism have been studied in the D-H coordinate, has certain significance for improving the product design methods and the manufacturing quality.
Quantum Particle Swarm Optimization Algorithm
Authors: Xu Yu Fa , Gao Jie , Chen Guo Chu , Yu Jin Shou
Published: June 2011

Based on the problem of traditional particle swarm optimization (PSO) easily trapping into local optima, quantum theory is introduced into PSO to strengthen particles’ diversities and avoid the premature convergence effectively. Experimental results show that this method proposed by this paper has stronger optimal ability and better global searching capability than PSO.
Efficient Processing of XML Path Queries Using BI Index
Authors: Hu Xiang Yu , Mo Yun Yin , Zhang Hai Wei , Yuan Xiao Jie
Published: June 2011

XML has been widely used for information exchange and storage as the de facto data representation format nowadays. Several XML query languages such XPath, XQuery and XML-QL have been proposed. Many structural join algorithms have been proposed for processing XPath queries, Although holistic twig join algorithms has been proved to be I/O optimal in terms of input and output sizes for queries with only ancestor-descendant edges, it cannot control the size of intermediate results for queries with parent-child edges. We address the problem of efficient path queries with mixed of ancestor-descendant and parent-child edges on a simple but novel index, called BI (i.e. Binary Index) based on Dewey labeling scheme. And we propose a new holistic path join algorithm, namely PSBI, which has the same performance as PathStack for query path with only ancestor-descendant edges, but it is significantly more efficient than PathStack for queries with the presence of parent-child edges. Experimental results demonstrate that the PSBI and BI index has a substantial performance improvement compared to original PathStack algorithm.
Remote Power Automatic Meter Reading System Based on GPRS
Authors: Zheng Chen Sheng
Published: June 2011

A remote power automatic meter reading system based on GPRS is introduced in this paper. The system using GPRS for communication and collecting the energy data in real-time, realize the optimization of the system resources. The components, structure, working process and the GPRS wireless transmission used in the remote power automatic meter reading meter are described and the practical application shows that the system obtained the desired results.
Social Community Classification Based on Laplacian Spectrum Feature
Authors: Wang Bo , Xu Yi Qiong , Zhou Yao Ming
Published: June 2011

Community structure is a common property that exists in social networks. Community structure analysis is important for understanding network structure and analyzing the network characteristics. Recently community detecting methods are reported continually, but within community the structure is still complex. This paper proposed a method applied to classify community by using Laplacian spectrum feature, and defined the distance measure between the features extracted from difference community. As experiments, this paper studied three complex network models: the random graph of Erdös-Rényi, the small world of Watts and Strogatz and the scale-free graph, and classified them based on Laplacian spectrum feature successfully. The result shows the Laplacian spectrum feature and similarity measure are effective for classification.
The Application of Integrated Risk Early-Warning System in Enterprise
Authors: Zhao Yan Na , Sun Yu Qiang
Published: June 2011

With the severe competition in the market, the risk that enterprises are faced with is more and more big. But so far, the development of the risk early-warning management system of enterprises in China is relative laggard. Based on this background, the theory of integrate risk early-warning system is studied and applied in Enterprise. The author hopes that it can offer some use to researching on enterprise integrated risk early-warning management.
Research on Matrix Hardness of Coated Mould and its Performance Effect
Authors: Zhang Er Geng , Wu Yan
Published: June 2011

After researching the mould coating and the effect of different matrix hardness on the service life, it can be concluded that under the condition, the matrix materials match with its obdurability well, the higher the matrix hardness, the longer the service life after the mould’s being coated. What’s more, it is put forward that when the heat treatment technology and the coating technology are worked out, the effect of the coating temperature on the matrix hardness should be turned over so as to avoid the matrix’s being annealing again and then have a further influence on the capability after being coated.