bluuebunny/crossref_metadata_2025 huggingface dataset:
Analysis of Drying Shrinkage of the Concrete Using Calcium Sulfa Aluminate(CSA) Based Expansive Additive
Authors: Park Chun Jin , Koh Kyung Taek , Han Min Cheol , Han Cheon Goo
Published: October 2011

This study purposed to analyze the mechanical properties of concrete using the expansive additive in order to control the drying shrinkage of concrete and to propose a time-depending drying shrinkage interpretation model considering the influence of expansive additive based on Japan Society of Civil Engineers (JSCE) Model, so the summarized results are as follows: According to the results to perform the drying shrinkage interpretation of concrete using the expansive additive through the proposed the intepretation model, it can be known that the interpretation value in every mixture usually assumes the measurement value well and that the model proposed in this study was statically relevant through exaimining its effectiveness. It can be thought to evaluate and anticipate well the drying shrinkage of concrete using the expansive additive on field through this model formula in future.
A New Coal Sampling System for Measurement of Gas Content in Soft Coal Seams
Authors: Xue S. , Li Xing S. , Xie J.
Published: October 2011

Core samples or drill cuttings from boreholes drilled in coal seams are used in direct measurements of gas content in coal. In soft coal seams, core samples are difficult or sometimes impossible to obtain due to poor borehole stability such as large borehole deformation and borehole collapse, drill cuttings have to be taken and used. Due to their faster initial gas desorption rates, drill cuttings need to be taken rapidly and accurately at given positions during borehole drilling to ensure the accuracy of gas content measurements. To meet these sampling requirements of drill cuttings, a new sampling-while-drilling (SWD) system has been developed. The SWD system is based on a special design of double-tubing drill rods and a reversed circulation of pressurized air. A field test of the SWD system was carried out with satisfactory results. This paper presents the principle and results of the field test of the SWD system.
Numerical Simulation of Cold Press Forging Forming for Stepped Hole of Thin Sheet Metal
Authors: Wang Ke Sheng , Liu Jian Lin , Chen Xiao Wei
Published: October 2011

An optimum process for a two-step press forging of stepped holes in a metal sheet was proposed .Numerical simulation on the two-step process was carried out by using DEFORM-3D. Distributions of effective strain and effective stress were obtained. The study showed that the process not only can form the stepped, but also can increase the surface quality and strength of stepped holes in sheet metal parts, According to the numerical simulation’s process parameter , an experimental die was designed, the simulation results were in good agreement with the experimental data
Fatigue Life Analysis of the Bolt
Authors: Chen Zhong Chao , Zhang Ji Min
Published: October 2011

For the bolts on the experiment table, there are two main kinds of forces, namely, shear force and tensile force. This paper will test these two different forces that the bolts received, verifying their compliance with the service life. Finding out which situation is better by comparing the safety coefficient under the static load and the fatigue life under the fatigue load. And then put forward some reasonable measures for improving to make the bolts meet the fatigue life of the experiment platform.
Current Situation and Developing Trends of Glass-Online Stacking System
Authors: Wang Xiao Qiang , Cui Qing Dong , Cui Feng Kui
Published: October 2011

Through the analysis of the glass online stacking system at home and abroad, expounded the three main forms of glass online stacking system, summarized their advantages and disadvantages respectively, mainly analyzed the compositions of glass online stacking system and their respective characteristics, Compared with each other, obtained the incomparable advantages of the glass online stacking system based on the industrial robots, and further analyzed the development trend of the glass online stacking system.
Designs of Intelligent Environ-Control System Based on Energy Saving and IEH- Study on S House
Authors: Chen Nien Tsu , Chiang Che Ming , Liu Kuang Sheng , Chen Shang Yuan , Chiang Yi Chang
Published: October 2011

Intelligent green buildings are the latest development trend of Taiwan’s building industry. This research focuses on how to control the components and equipments in a building in accordance with the variation of environment and needs of users. In the research, the equipments (heat recovery ventilation, HRV) and components (top windows of ventilation tower) were automatically driven by various environmental sensors installed outdoor and indoor for controlling environmental conditions in real time. Meanwhile, it was helpful to energy saving and indoor environmental health (IEH). S house located in Chiayi of Taiwan is the object of the research. The intelligent environ-control system of S house can be divided into three parts: small weather station monitoring system, intelligent window scenario control system, and indoor monitoring and control system. The points of this research mainly are to construct a overall structure of the intelligent environ-control system, the logic and mechanism of intelligent window scenario control system, essential fresh air calculation, and the judgment on activation and operation of indoor monitoring and control system.
Match and Optimization of Series Hybrid Bus Powertrain Parameters
Authors: Cai Ling , Zhang Xin
Published: October 2011

With the requirements for reducing emissions and improving fuel economy, it has been recognized that the electric, hybrid electric powered drive train technologies are the most promising solution to the problem of land transportation in the future. In this paper, the parameters of series hybrid electric vehicle (SHEV), including engine-motor, battery and transmission, are calculated and matched. Advisor software is chosen as the simulation platform, and the major four parameters are optimized in orthogonal method. The results show that the optimal method and the parameters can improve the fuel economy greatly.
Equipment Maintainability Lifecycle Modeling Oriented on Concurrent Engineering
Authors: Liang Wei Jie , Jia Jin Na , Liu An Qing , Hao Jian Ping
Published: October 2011

As an important engineering work, maintainability design, analysis, evaluation and other activities runs through the entire weapon equipment development process. To solve the current maintenance puzzle in the beginning, and let the maintenance in time, economic and effective, this paper build up the weapon equipment maintain-ability lifecycle models from function view, information view and process view oriented on the concurrent engineering (CE). Accordingly, put the maintainability design, analysis and evaluation works in to practice throughout the weapon equipment system analysis, design, manufacture, test, evaluation and other engineering activities in the earlier phase of weapon equipment system demonstration, thus can make the equipment have the best maintainability character by the roots.
Equivalent Brightness Fitting Calculation Method about White LEDs
Authors: Yang Yong , Wang Lei , Zhu Chuan Zheng
Published: October 2011

White LEDs can show different correlated color temperature (abbreviated as CCT) by adjusting the luminous spectrum peak distribution and relative strength. Recent research results indicate that spectral luminous efficiency function of mesopic vision Vmes(λ) and equivalent brightness are associated with luminous spectra of light sources. A series of white LEDs with different CCT are tested and calculated, it shows white LED with higher CCT has higher mesopic vision equivalent brightness, although the brightness are identical when the tester corrected by traditional photopic vision spectral luminous efficiency V(λ). From the equivalent brightness curve fitting, the curve can be described as a polynomial function, for it excellent correlation, the more value of equivalent brightness could be calculated without complex derivation.
Exploring the Application of Problem-Based Learning in Logistics Teaching Module
Authors: Zhan Yan , Peng Wei , Xiao Fan , Zhang Lu Fang
Published: October 2011

The development of modern logistics technology and equipment shows the trend of globalization. In order to bring up high-level logistics talents who possess international cooperation in awareness, communication skills, scientific innovation and academic competitiveness, traditional teaching approaches must be reconsidered. Based on the project of bilingual teaching reform of “Advanced Manufacturing Technology”, the paper discusses how to use the student-centered methods, such as case study, problem-based learning (PBL) and project-based teaching to improve teaching quality. In addition, it explores assessment and problems that can be anticipated with these teaching approaches.
Integrity Analysis of Gas Field Water Reinjection Well Wellbore
Authors: Xu Chun Bi , Liu Jing Cheng , Xu Li , Kuang Xue Mei , Wang Jian Hua
Published: October 2011

Finding the right abandoned well (or new drilling ) leakage layer reinjection into the ground is the most effective, the most mature, the most commonly used method in the gas filed water treatment. By simplifying assumptions and the establishment of mathematical model and FEM, simulation and calculation of stress status of the tubing and casing, Analysis of wellbore integrity, for the analysis of the wellbore risk of gas field water reinjection wells and reinjection wells safety operation provide important theoretical support.
Orthogonal Cutting of Biological Soft Tissue with Single Cutting Edge
Authors: Gao Li Ying , Zhang Qin He , Liu Ming
Published: October 2011

An orthogonal cutting model for investigating indentation type cutting of soft tissue was established, and the cutting force model was constructed theoretically based on fracture mechanics. A planar biological soft tissue cutting experimental setup was designed and developed to realize soft tissue cutting. Cutting experiments using orthogonal cutting blades were performed on fresh porcine liver at different cutting speeds. It was experimentally shown that the cutting speeds and the blade rake angles have significant effects on the penetration force and cutting force. Finally, a regression equation was obtained to explain the relationship among cutting force, cutting speed, and rake angle. These findings provide new insight into the biological soft tissue cutting.
Research on Environmental Durability Testing System for Automobile Engine ECU
Authors: Yu Miao , Shuai Lu , Guo Jiang Wei , Fu Jie
Published: October 2011

Based on the principle and specifications of Environmental Durability Test on automobile engine ECU, an open, intelligent and practical ECU durability testing system (EDTS) is designed. The system consisted of a simulation platform and a testing management software. The platform provided stimulating sensor signals and simulation loads, and an online automotive environment was built. The management software sent various instructions to set up the platform and read the ECU running status data. And this EDTS has been applied to test a kind of domestic automobile engine ECU．The experimental results shows that the mean time to failure (MTTF) of ECU samples was improved and the testing period was shortened greatly.
Study on the Micro-Structure of High Temperature Oxide Scales Applied Loads on 12CrMoV Alloy
Authors: Chen Shun Qing
Published: October 2011

The 12CrMoV alloy steel is the most commonly used high pressure vessel and heat pipe using the material. This article on external forcing 12CrMoV alloy steel of high-temperature oxide layer for microscopic analysis of oxide layers of micro-cracks and exfoliation, oxidation layer portion of the oxide layer break, the oxide layer fold, multilayer structure oxide, oxidation and give the structure of the matrix and the proliferation of microstructure of the oxide layer. To compare 12CrMoV alloy steel for high temperature oxidation layer in a load-time and there is no loading time variation of topography.
A Study on Energy Saving and Light Pollution of LED Advertising Signs
Authors: Ho Chen Ying , Lin Hsien Te , Huang Kuang Yu
Published: October 2011

Lighting advertising signs not only play an important role in outdoor lighting environment in Taiwan, but also become the main factor of energy consumption in urban areas at night. Light-emitting diode (LED) has been gradually used in advertising signs due to its advantages. However, in order to be conspicuous and legible in the daytime, signs that are excessively bright may result in considerable light pollution and energy waste at nighttime. Therefore, this research aims to measure the luminance of LED signs and traditional internally lighted signs, and analyze the light trespass from each signage. Based on the research results, the energy consumption from a LED full color screen is 12 times more than a traditional internally lighted sign per day. Statistically, all kinds of LED signs are much higher than traditional internally lighted signs in the percentage of excessive brightness and average luminance value. As for the light trespass, since the vertical illuminance on facade facing the signs increases with the increase of the sign area or the decrease of the distance between the sign and the facade, the vertical illuminance on facade facing the signs would exceed the limit of CIE even if the luminance of the signs achieves the standard of CIE in terms of the general conditions in Taiwan. This happens to LED full color screens in particular and thus results in considerable obtrusive light. To sum up, in order to reduce unnecessary energy consumption and improve the nighttime lighting quality for outdoor environment, this research recommends the luminance limitation for light dimming of LED advertising signs should refer to the zoning, time period, and sign area.
Urea Peroxide：New Degumming Agent Impact on the Effect of Oxidation Degumming of Ramie
Authors: Liu Guo Liang , Li Zheng Fan , Ding Ruo Yao , Zhong Xiao Min , Yu Chong Wen
Published: October 2011

The application of urea peroxide in ramie oxidation degumming was discussed in this paper. And urea peroxide impact on the effect of ramie degumming was analyzed. The experimental results show that four parameters such as time, temperature, the amount of urea peroxide and the dosage of sodium hydroxide have influence on the fiber strength. At the same time, fiber strength with the increase of the amount of urea peroxide is reduced. The fiber strength and the dosage of urea peroxide basically appear linear characteristics. With the increase of time and the amount of sodium hydroxide, the single fiber strength of ramie increases firstly and then decreases. When the temperature is 95°C and the time is 3 hours, the fiber strength is the highest.
Tensile Test of Heterogenic Welding Joint in Ambient Temperature or High Temperature
Authors: Xu Shu
Published: October 2011

In this paper, the high temperature tensile tests and ambient temperature tensile tests are performed. The high strength of the welding for 1Cr9Mo/45 and 0Cr18Ni9/45 is somewhat smaller than the ambient strength, but the elongation is improved. Both the high strength and ductility are decreased compared to the results of the room tests. The rupture is located in the side of 1Cr9Mo for the welding of 1Cr9Mo/0Cr18Ni9 at the room temperature, while the rupture is located in the side of 0Cr18Ni9 at high temperature. It is concluded that the strength in high temperature is decreased for 0Cr18Ni9. The rupture happens in the side of 45 for both heterogenic welding joints of 45/0Cr18Ni9 and 45/1Cr9Mo.
A New Crawl Exercise Machine Based on Ergonomics
Authors: Yu Zhong Hai , Wang Zhen Yu , Qian Bing Feng , Shao Bing , Fan Li Shun
Published: October 2011

According to medical and physiology study of human health, combined with the authoritative media chronicle , it can be sure that the crawl is a very comprehensive range of whole body movement.This design is based on ergo- new crawl exercise machine. it uses software such as Matlab and ansys ug into Structure design and load analysis , the check and Practical application,it is proved to satisfy a 150 kilograms user’s need. it provides the user with a variety of modes, such as the exercise forwardly or exercise passively. At the same time, it is equipped with the safety precautions and voice control and other perfect facilities.The crawl exercise machine can be used extensively in the family, the hospital, the fitness club, etc.
Quantitative Control of C2S Crystal Transformation
Authors: Zhao Ming
Published: October 2011

Crystal transformation of dicalcium silicate (2CaO•SiO2, C2S) has influences on the microstructure, hydraulicity, and grindability of cement clinker. The transformation of β-C2S to γ-C2S can destroy the clinker nodule integrity by volume expansion due to the low density of the γ-phase. It can be used to pulverize cement clinkers for saving grinding energy, but the hydraulicity of γ-C2S is lower than β-C2S. Quantitative control of C2S crystal transformation could balance the energy saving and hydraulicity. The influences of sintering temperatures, cooling methods and chemical impurities on the transformation were investigated. The results show that the appropriate sintering temperature of γ-C2S was 1250～1500 °C, and the rate of cooling should not be higher than 500 °C/min to guarantee β-C2S transform to γ-C2S. Chemical impurities (Na2O, P2O5, B2O3, Cr2O3 and K2O) were stabilizers of β-C2S, which could prevent β-C2S transforming to γ-C2S. The stability effect was related to their concentrations. The characteristic concentrations of Na2O, P2O5, B2O3, Cr2O3 and K2O were approximately 1.2%, 0.3%, 0.3%, 1.0% and 1.5%, respectively. Above these concentrations, most of β-C2S could be stabilized rather than transforming to γ-C2S. In “transition zone”, C2S crystal transformation could be controlled quantitatively by adjusting the stabilizer concentration.
A Study on the Equivalent Static Wind Loadings on the Arched Roof Frames of Low-Rise Buildings in Atmospheric Boundary Layers
Authors: Chen Jwo Hua
Published: October 2011

A series of wind tunnel aerodynamic experiments were conducted to investigate the wind loads on the low-rise buildings with arched roofs. The wind loadings were calculated from the simultaneous measured wind pressures data over all of the models surfaces in a simulated open terrain exposure atmospheric boundary layer. With these data the equivalent static wind loads (ESWL) of fluctuating wind pressures acting on buildings frames were evaluated and the results of equivalent static wind loads were compared with the 2006 version design codes of wind loadings on buildings in Taiwan. The design codes suggested the direction of wind acting on the low-rise buildings roofs were normal to the ridges of roofs. In this study results shown, the equivalent static wind loads caused by the approaching turbulent flow may exceed the suggested values by codes. So the peak response of structural frames should be considered carefully.
Configuration Pump Performance Test System Design Based on Kingview
Authors: Yang Li Feng , Yuan Jun , Liu Wei Na , Nie Xiu Ming , Pei Xue Liang
Published: October 2011

Use Kingview to acquire and display the centrifugal pump performance parameters for the real-time data, and will stored the collected experimental data in Access databases, using VB database read, and drawing function for the data processing and rendering performance parameters of relationship curves.
Foundry Technique Designing of the Large Scale Thin-Section Casting
Authors: He Bin Feng
Published: October 2011

The FDM numerical simulation software View Cast system was employed to the counter-pressure casting of aluminum alloy large-scale thin-section casting. By analyzing the mold filling and solidification, the distribution of liquid fraction, temperature field were studied. The potential shrinkage defects were predicted to be formed at the top of the casting. A solution towards reducing such defects has been presented. The feeding capacity of the riser was improved. Analysis on the shrinkage proved that the improved riser is an effective method for reduction of defects.
Dynamic Stress Concentration Analysis of Multiple Circular Cavities near Multiple Semi-Cylindrical Alluvial Valleys
Authors: Wang Hui Wen , Yang Zai Lin , Xu Hua Nan
Published: October 2011

The problem of dynamic response of multiple circular cavities near multiple semi-cylindrical alluvial valleys under incident plane SH-waves is investigated by the methods of complex function and multi-polar coordinates in this paper. Firstly, the solution domain is divided into two parts, Domain I is multiple semi-cylindrical alluvial valleys, and Domain Ⅱ is an elastic half space with several subsurface circular cavities near multiple semi-cylindrical alluvial valleys. A series of infinite algebraic equations is then obtained based on the displacement and stress continuity condition on “common boundary” of two parts after constructing the associated displacement and stresses expressions of each part. Finally some numerical expamples are prensented and dynamic response of subsurface circular cavities near semi-cylindrical alluvial valleys with respect to different parameters is discussed.
Gear Stepping Motor Driven Reconfigurable Manipulator
Authors: Liu Li Li , Zhong Kang Ming , Tang Xiu Ying
Published: October 2011

This document describes a simple industrial clamping device composed of hinges and a lever in series with, and driven by, a geared stepping motor. The principle of operation and technical characteristics are illustrated, and the clamping force is calculated. The advantages of this innovation are 1) reconfigurable, though adjustment of its levers’ position for clamping different sized work pieces ; 2) environmental conservation, Compared to the hydraulic clamping device and air cylinder clamping device, it has less noises, needs less energy and no pollution.
Motor Control and Simulation of Coal Mine Detection Robots Based on Fuzzy-PID
Authors: Niu Zhi Gang , Wang Xiao
Published: October 2011

To achieve an agile and accurate motor control performance on coal mine detection robots TUT-CMDR, Fuzzy-PID control and its model building method in the Simulink environment are explored. The transfer function model of the TUT-CMDR motor transmission system is established and M-files used to ascertain the gain of the PID control are compiled. The final value of the step block is configured to a variable and parameterized quantization factors and scaling factors are proposed to solve the problem of different basic universe for different final value. Some improvement is also made on the existing fuzzy control rules. Finally, the designed controller is proved to show a better control performance.
Dynamic Destruction of High Pressure Water to the Mining Floor Deformation
Authors: Sun Wen Bin , Guo Wei Jia , Liu Jin Xiao
Published: October 2011

At present, the mines in our country gradually shift from the shallow mining to the deep mining, but the deep well floor is particularly serious hazard by high pressure underground water.This article considers the high pressure underground water as three-dimensional transient flow, sets up mechanical model by combining mechanical knowledge and to analyze the destructive action on floor from two aspects. On the one hand, researching the impact destruction of high pressure water at different positions of floor ; the other hand, to analyze mechanical function on fracture development from high pressure water.
Research on Assembly Sequence Planning Based on Improved Slope One Algorithm
Authors: Jin Yu , Hou Wen Jun , Yang Fu Xing
Published: October 2011

According to the characteristics and needs of complicated products, a method for handing assembly sequence based on improved Slope One algorithm was proposed. On the basis of that the network graph of assembly relationship was constructed, and a method for simplifying it was proposed by expressing elliptically same parts, identifying and hiding fasteners. In this paper, Slope One algorithm was initially introduced into the assembly sequence planning, and it was improved according to the problems to be resolved. In the meantime, particle swarm optimization algorithm was introduced into the feedback of the recommendation result. The method has been proved that it was not only used to obtain a good recommendation of assembly sequence but also sensitive to the individuation of designers.
Study on Nonlinear Dynamics Collision of Drill String and Rock Based on ANSYS/LS-DYNA
Authors: Yang Shang Yu , Yang Xiu Juan , Yan Xiang Zhen
Published: October 2011

In the process of drilling well, the kinematics of drill string is quite complicated. The drill string not only vibrates in longitudinal, transverse and torsional direction, but also random impacts and contacts well wall. Considering the random load of drill bit and rock, contact impact of drill string and well wall, a model is proposed to simulate the contact-impact of drill string and formation. The results show that: in the condition of this article the first principal stress of the drill string can reach to 130 MPa, for the random impacts, the strength of drill collar will reduced under cyclic loading; contact-impact is the principal source of drill premature failure. In this paper, an explicit integration and nonlinear finite element was adopted to simulate the collision between the drill string and formation, the process of the collision between the drill string and formation can be revealed compressively and delicately. Through an example, we can obtain the foundation for nonlinear dynamic theory of drill string system collision in the actual work condition, and has important theory significance and academic value.
Study on Safe Distance between Cross-Cut and Lower Belt Tunnel
Authors: Wen Xing Lin , Li Chuan Lei , Yu Fei , Gao Lin Hai
Published: October 2011

In order to solve the question of safe distance between cross-cut and lower lane bolt tunnel and support, aim at geological and mining conditions of north mining area in sanjiaohe coal mine, and analysis mechanism of surrounding rock deformation, analysis the upper roadway surrounding rock stress, displacement and distruction of plastic by FLAC3D determine the minimum distance between the two tunnel and design support scheme on the basis of on-site roadway conditions. Result of this study can provide a reference not only in this mine but also for another similar situtions roadway.
The Design and Analysis of the System about Wind Sorting Fruit from Leaves Based on the Blueberry Picking Machine
Authors: Bao Yu Dong , Guo Yan Ling , He Pei Zhuang
Published: October 2011

As the plant areas of blueberries expand unceasingly, the realization of harvesting mechanization becomes more and more urgent. The fruit collection devices of the picking machine are designed with three-dimensional software Pro/E based on the blueberry picking machine. Meanwhile, wind sorting is used to realize the separation of fruit and leaves. In this paper, wind-sorting box is studied on the basis of the principle of wind sorting. The simulations of wind-sorting box inner are made with software FLUENT. A reliable basis is provided for the feasibility of wind sorting and a further analysis is made for the shape and the position of the inlet of wind-sorting box. And the structure of wind-sorting box is optimally designed. The improvement of the efficiency of wind sorting not only provides a theoretical basis for the separation of fruit-leaves of small berries, but also has an important meaning in agricultural machinery.
Wavelet Package for the In-Process Monitoring of Gas Metal Arc Welding Mild Steel
Authors: Ting Ying Yao , Hung King Chu , Tzeng Yih Fong
Published: October 2011

The acoustic signals were strongly related to the behavior of the arc column, the molten pool and droplet transfer in gas metal arc welding(GMAW).In this study, all the work pieces (JIS SS400) were welded at the same speed with different currents using a gas metal arc; the purpose was to observe the relationship between these factors. Using a sound capture card and microphone we collected the audio signals generated by the welding. In this paper, wavelet package transformation (WPT) decomposes the sounds signals into 128 channels within the frequency domain. The properties of the audio signals were analyzed by the wavelet-based channel energy. The ROC (Receiver Operating Characteristic) parameters, (Ac, Se, Sp, ppv, and npv), were used for classification performance evaluation. Experimental results also show that acoustic emissions are useful in the quality control of plasma arc welding.
AHP Method for Supplier Evaluation Index System Modeling and Evaluation Research
Authors: Hu Lei
Published: October 2011

The choice of supplier is vital for corporations. There are many kinds of index to measure suppliers. Firstly, this paper establish a structure-model of evaluation index system for supplier according to reachability matrix of index factor division, and then select the best supplier of auto-tire industries by AHP and normalization method. This method can avoid the current single-evaluation index system of supplier which depends too much on qualitative defects, and measure suppliers comprehensively and scientifically.
A Construction Method of Surface Modeling Based on CAID Software
Authors: Zhu Yun Feng
Published: October 2011

Any appearance in modeling entity can be decomposed into faces as components. This paper takes face as a key point to analyze shape and modeling of objects and discusses a general construction method of Curved-surface products in CAID software.
A Dual-Population GA Based Visual Identification with Model Matching
Authors: Li Yan , Gao Feng , Huang Yu Mei , Yang Xin Gang
Published: October 2011

Aiming at increasing speed of analysis and understanding of image and improving identification accuracy and efficiency, a novel model matching method with imaged object feature is presented, by which the grey value of image information collected from vision sensor is utilized directly and the finished image recognized result is achieved without pre-processing, so it saves the time for identification. In model matching process, a dual populations GA (DPGA) method is used for searching the best matched object, in which one is the global population served for detecting the possible area existing the optimal position, the other is the local population served for searching in the possible area for the optimal position carefully and quickly. The effectiveness of the method has been verified using real image of workpiece with rectangular feature.
Dynamic Analysis and Simulation of Virtual Engine
Authors: Wu Chiu Chin , Hwang Yii Wen , Lin Shu Hong
Published: October 2011

The purpose of this study was to establish a complete dynamic analysis method for motorcycle engines to serve as course material for study of machine dynamics. Virtual engine software was also developed for users to understand how engine performance is influenced by parameters such as engine accelerator, engine weight, and flywheel. First we applied the vector-loop approach to deduce the kinematic analysis of engine mechanism. We then applied Newton’s method to analyze the bearing force and friction of each link. Next, we used a power equation to deduce the equation of motion of the system, and used the Runge-Kutta method to perform normal dynamic analysis. Finally, by combining computer programs with the Open Graphics Library (OpenGL), we developed virtual engine software for users to observe motion and performance of engine. The results of this study provide engineers a computer-aided design program for automatic generation of all optimal pipes. It is beneficial to pipe design ability.
An Intrusion Detection Scheme for Home Wireless Sensor Networks
Authors: Wei Min , Rim Kee Wook , Kim Kee Cheon
Published: October 2011

In this paper, we propose an intrusion detection framework through multi-agents scheme for wireless home automation networks. Our mechanisms include the wireless sensor network intrusion detection architecture and an intrusion detection scheme for security enhancement. For the performance evaluation of our mechanism, we use the wireless data measured on the real wireless home networks. The simulation results show that the security manager detect the intrusion attack to improve the whole performance of the system, and can prolong the lifetime of the network.
Controller Design for Petri Net with Uncontrollable and Unobservable Transitions
Authors: Tao Ze , Liu Xiao Xia
Published: October 2011

A controller design method for Petri net with uncontrollable and unobservable transitions that enforces the conjunction of a set of linear inequalities on the Parikh vector is proposed. The method is based on the theory that each place can be described with a Parikh vector inequality. Constraints are classified into admissible and inadmissible constraints. An inadmissible constraint cannot be directly enforced on a plant because of the uncontrollability or unobservability of certain transitions. Construct the controller though transforming the inadmissible constraint into admissible one. The method eases the design of controller, because it is based on part net design, and it only considers the direct or indirect transitions related to the constraints. So the computation required to find the Petri net controller is quite simple. Finally, the method is proved to be simple and efficient through one example.
Design of Test Software for the CAN/LIN Hybrid Network Automobile Body Control System
Authors: Zheng Chuan , Sun Wei , Meng Bu Min
Published: October 2011

The structure of a CAN/LIN hybrid network automobile body control system is introduced and the test software for the CAN/LIN hybrid network Body Control Module (BCM) has been designed and developed with Visual C++. It can test and display executive devices’ working status in the body control system in real time, update the Electronic Control Unit (ECU) program through CAN bus, get the fault code of BCM and position fault source when BCM need to be diagnosed. This paper describes in details the general design scheme of the software, important function module design, the operating interface design and application method, and also point out how to turn these ideas into reality
Development of Software System of Crawler Crane Platform Fatigue Life Reliability Analysis
Authors: Li Jia , Lu Feng Wu , Zhao Fei , Zhang Xiu Qian
Published: October 2011

Platform is one of the most important load-carrying parts of crawler cranes, one software system of crawler crane platform fatigue life reliability analysis is developed in the paper. It is based on the finite element analysis model by applying parametric design language APDL Using ANSYS Transient analysis, the rain-flow counting method has been adopted to deal with stress spectrum by the mean of combining related spare parts material P-S-N curves and adopting Miner linearity fatigue accumulation damage theory. It is developed under Visual Basic6.0 and Access 2007 database, it include five function modules: parametric finite element modeling, finite element analysis, optimization and fatigue life reliability analysis, it has important value to improve the design of crawler cranes.
Study for Dynamic Property of the Inking System of Offset Press Based on Matlab
Authors: Wu Qiu Min , Wu Ji Mei , Wang Rui
Published: October 2011

The method of computer simulation was adopted in researching the dynamic property of the inking system of offset press. The Matlab simulate calculation of continuous inking system was carried out by discretization. Then, the math model of the vibration characteristics of the vibrators and the dynamic response was built. The relationship between steady time vs. plate coverage, vibrator oscillation was studied deeply .It is concluded that the steady time is increased while the image coverage decreased, and in the absence of vibrator oscillation the steady time is inversely proportional to the image coverage. This relationship is disturbed in the real world by the oscillation of vibrators. It provided the foundation and theoretical support for the design and calculation of the inking system
Study of Dynamic Impact Behaviors and Ballistic Properties of Ceramic/UHMWPE Composite Armor
Authors: Guo Ying Nan , Sun Qin , Wu Ling
Published: October 2011

The ballistic properties of different thickness combinations of ceramic/UHMWPE composite armors were studied in this paper, in order to find a better ballistic property structure subject to 12.7mm bullet. Powder-gun ballistic testing system was used to carry out the normal impact tests to determine the response and the ballistic limit of these combinations of ceramic/UHMWPE composite armors subject to impact loading. Compared with the test, an explicit finite element (FE) model was built with LS-DYNA Code to simulate the impact process. The influence of different parameters on the impact behavior was considered analytically. Results show very good agreement with the experimental data.
Research and Development of Solid Modeling Technology for Impeller Based on UG/Open
Authors: Li Gang , Wei Xiu Ting , Chen Qian Qian
Published: October 2011

To realize CAM of impeller cast moulds, this paper developed an automatic 3D modeling system of impellers, based on hydraulic models and UG/Open technology. The system has functions of hydraulic model database correction, vane surfaces modeling, vane surfaces check, impeller solid modeling, and so on. It achieves design quality inspection and automatic solid modeling of centrifugal impeller as well as CAD/CAM integration of cast mould, with the design precision effectively improved and the product development cycle greatly shortened.
Research on Design and Development for Intelligent Manufacturing Execution System of Tungsten Powder Processing
Authors: Yu Jian Guo , Feng Mei Lin , Huang Peng Peng , Zhang Qi Zhong
Published: October 2011

For the design and development problems about intelligent Manufacturing Execution System of tungsten powder processing, the difficulty in the manufacturing execution management is pointed out combining Tungsten powder process flow. Goal of the system is analyzed and its main function is designed. Collaboration as the core, integrated system architecture is established from three aspects of system function, time and space. The physical data model is designed by using PowerDesigner, the manufacturing execution system is developed based on JSP. Through practical enterprise application, it is proved that the system immensely enhance the manufacturing execution management level for the Tungsten powder processing enterprise.
Simple Parallel Genetic Algorithm Using Cloud Computing
Authors: Zhao Jian Feng , Zeng Wen Hua , Li Guang Ming , Liu Min
Published: October 2011

Cloud computing is a novel parallel platform, this paper proposed a kind of simple parallel genetic algorithm (PGA) using Cloud computing called SMRPGA. Comparing with the traditional PGAs using high performance computers (HPC), cluster or Grid, SMRPGA is simple and easy to be implemented. Another advantage is that PGA using Cloud computing is easy to be extend to larger-scale, which is very useful for solving the time-consuming problems. A prototype is implemented based on Hadoop, which is an open source Cloud computing. The result of running two benchmark functions showed that the speed-up of PGA using Cloud Computing is not obvious considering the long communication time and it is suitable to solve the time-consuming problems.
A Business Process Composition Model for Web Component
Authors: Choi Cheol Rim , Song Young Jae
Published: October 2011

An extensive work has been done, across a number of fields, in modeling organizational processes. A tension has existed between the attempts to provide a rich expression of organizational activities and the desire to support the work as it actually takes places. A static business process is characterized by stable network connections, use of powerful computing devices, and an easy access to various knowledge sources within the corporate Intranet. In modeling a business process into a component, a major challenge is whether the mechanism of component combination at the code-level is readily available. Currently there is little experience concerning the modeling of relationships between components and their communication for business processes. It is considered that the connector should take charge of interactions between the software components and the associated information about the component composition, role and specification. This paper proposes business process composition method for development of web applications. Specifically we focus on the interactions of the connectors that are the interfaces between the business processes in web component. We describe the method and demonstrate that this algorithm is able to process components and interfaces. We then show the viability of this method by implementing a simple stock trading system.
Wavelet-Based Neural Network Adaptive Filter for sEMG Denoising
Authors: Wang Jian Hui , Chen Na , Xiao Qian , Xu Jian You , Gu Shu Sheng
Published: October 2011

For the large computation workload of the adaptive filter algorithm and the low filtering speed of the adaptive filter model based on wavelet transform, a wavelet-based neural network adaptive filter model is constructed in this paper. As the neural network has the capacity of distributed storage and fast self-evolution, Hopfield neural network is used to implement adaptive filtering algorithm LMS, so as to increase the computing speed. The model applied to sEMG signal denoising can achieve a better filtering effect.
Web-Based Information System for Cladding Industry
Authors: Du Qiang , Ledbetter Stephen , Yang Rui
Published: October 2011

The cladding industry has been experiencing a rapid development since two decades ago. The client’s requirements and architect’s ambition make the building cladding become more complex than ever before. The technical complexity calls for more comprehensive managerial techniques, especially information management. This paper proposes a web-based information management system, in which software package was developed and hardware incorporated. After establishing the framework initially, a main challenge, information sources, of this mechanism was discussed.
A Survey on the Object-Oriented Petri Net Modeling
Authors: Liu Yan Pei , Fu Jun Hui , Feng Hong Yu
Published: October 2011

With the larger and more complex of the size and function of software products，choosing an efficient modeling technique for analyzing complicated and ever-changing system plays a vital role．Object-Oriented Petri nets for its unique characteristics which are simple and laconic modeling method and strong mathematical analysis capacity becomes a hot research．In this paper，it explain that the object-oriented technology how to combine with Petri nets．The typical Object-Oriented Petri net modeling steps and analysis methods are expounded. Up-to-date research about OOPN and its main improved models OOCPN, OOAPN and OOTPN are summarized, the pros and cons of each modeling are analyzed．The interrelated topics and the future development about OOPN are also mentioned．
A Study of the Influence of New Media on Graphic Design in Computer Age
Authors: Yan Ru Shan
Published: October 2011

New media technology changes our communication way and communication object, and also every aspect of our life, including communication, study, working, etc.. Visual language is a part of these aspects. Visual language, especially visual language of graphic design relies heavily on technology development. From petroglyph to the invention of printing, then to the application of computer, Internet, and satcom technologies, for human communication, each technology has revolutionary significance. This paper mainly discusses influence and meaning of new media on visual language of graphic design, as well as consideration of future development.
An Improved Random Decrement Algorithm and Applications
Authors: Ye Qing Wei , Feng Zhi Min , Hu Hai Gang
Published: October 2011

The free response function is the foundation of mode analysis and recognition of vibration signal, and random decrement algorithm is the commonly used classical algorithm of extracting the free response function. But under the restriction of engineering conditions, it may be impossible for long-time signal acquisition, which makes the number of sample points fail to meet the requirements of the random decrement algorithm, causing the extracted free response signals to contain strong noise and other influencing factors. Aiming at the shortcomings of the existing random decrement technique, this paper proposes an improved random decrement algorithm based on multi-secant method, which can get satisfactory free response signals with short vibration response signals to provide excellent basis of analysis for the vibration mode recognition algorithm of various time-frequency domains. Actual engineering tests confirm that the improved algorithm greatly improves the precision of extracting free response signals while basically keeping the computation speed unchanged, it has high application value.
Research on the Grid Security Evaluation of Combination Weigh Based on Cloud Centroid Model
Authors: Sun Wei , Hou Hai Yang , Liu Jin Peng
Published: October 2011

According to the analysis of security factors for regional power grid, this paper established a comprehensive evaluation index system for grid security. Combined with AHP and entropy model, calculated the combination weight of indicators to determine the model, then established a comprehensive evaluation theory system for grid security on the basis of loud centroid theory. The applicability of the model just created was demonstrated well by an example calculation, providing the theoretical basis for further strengthening the grid security management.
Empirical Analysis of Express Service Quality Based on Fuzzy Comprehensive Evaluation
Authors: Fan Xin , Zheng Meng Yao
Published: October 2011

Logistics service quality, as the core of logistics management, how to define and evaluate it accurately and rationally is important for logistics enterprises to establish and enhance the competitive advantage. This dissertation has an eye to large matters, but starts working on small ones. We choose express delivery as the breakthrough points, target university students as the object of study, and revolve around the satisfaction of customers and their perception of the reliability, responsiveness, assurance, empathy and tangibles of logistics service they receive. In the light of the international theoretical findings, we create a comprehensive evaluation system of logistics service quality of a definite segment market. In the empirical analysis, the questionnaire is designed using Likert scale theory, and then we made a comprehensive evaluation in terms of the collected data based on fuzzy comprehensive evaluation. Eventually, as against the result of the empirical analysis, we present several concrete proposals for improvement.
Establishment of Virtual Orthopaedic Surgery System
Authors: Wang Mo Nan , Xu Wen Wen
Published: October 2011

For meeting the requirements of formulating a reasonable surgical planning by using PC before the orthopedic surgery, and for solving the problem that MIMICS cannot solve and post process biological tissue models, we present a new virtual orthopedic surgery system which can accurately predict the healing effects after analyzing the mechanical characteristics of biological tissue by combining finite element method with FEA software. According to the different operation plans formulate by orthopedic doctors, the different surgical results will be revealed from the virtual orthopedic surgery system by which the problem of choosing the best surgical procedure is solved and the functions of MIMICS is optimized. This paper introduces the overall structure, application platform, operating principle and major function modules of the virtual orthopedic surgery system, and then proves the practical applicability and reliability by an experiment.