bluuebunny/crossref_metadata_2025 huggingface dataset:
Study on the Integration of Regional Logistics Resources Based on SOA
Authors: Yao Xin Sheng , Ying Ji Lai , Cao Li Xin
Published: February 2012

China logistics industry is in a very high degree of marketization, which enterprises are uneven in scale and level, presenting with the scattered, weak, disordered and other typical features. Additionally, for lack of information platform and prefect industry management, the whole industry service quality is low; the logistics collaboration between the supply and demand becomes more difficult. Based on the SOA mode, this paper studies the regional logistics integration structure, regional logistics resource optimization. Combined with case study, the logistics business process based on SOA integration will promote a new way for the development of regional logistics industry.
Experimental Research on Thermoplastic Forming of Spherical Vessel
Authors: Li Rui Hu , Nuo Shi , Yuan Yue Ding , Yuan Yue Jin
Published: February 2012

It is a dieless forming technology to shape spherical vessels with thermoplastic forming. It involves heating a closed shell to the thermoplastic state, and then forming the spherical shape of a container by using gas to exert pressure. This paper researched thermoplastic forming of spherical vessels by attempting to form a soccer-ball shaped closed shell with a roundness error less than 0.15% using a heating temperature of 850°C and a pressure of 0.6MPa . The experiment showed that thermoplastic forming of spherical vessel is feasible.
The Research on the Method of Constructing BOM for Small and Medium Assemble-to-Order Manufacturing Enterprises
Authors: Ding Xiang Hai , Shi Jing Jing
Published: February 2012

In order to improve the efficiency of production and organization for small and medium assembly-to-order manufacturing enterprises, a new method of constructing BOM for these enterprises is introduced in this paper.Firstly,we analyze the process of assemble-to-order production.And then, a few important problems that should be paid attention to during the process of building the BOM is analyzed. Finally,we propose a new method of building a modular BOM.By dividing product function into modules and constructing modular manufacturing BOM,enterprises will respond to customer ord
The Research of Error Compensation for the 3D Surface Measurement
Authors: Tian Yuan , Ma Zi , Li Peng
Published: February 2012

For improving precision of 3D surface measurement equipments, which are playing important role in reverse engineering, the Adaptive Network based Fuzzy Inference System (ANFIS) is developed to reconstruct 3D surface error, and the measurement error of point cloud is compensated by the presented 3D error ANFIS model. The precision of 3D surface measurement equipments has been improved noticeably
The Structural Characteristics and Function Analysis of the Mobile Genomic Islands Flanked by Isocitrate Dehydrogenase Genes in Escherichia coli and Salmonella enterica
Authors: Song Lei , Zhang Xue Hong
Published: February 2012

Eleven genomic islands (GIs) flanked by isocitrate dehydrogenase genes are determined in Escherichia coli and Salmonella enterica. These GIs have at least one mobile gene, such as integrase gene, transposase gene or recombinase gene. Through annotation of internal genes, these GIs are related to lambda prophage. The excisionase gene is associated with the mobile gene in some GIs. An ABC transporter, namely, sitABCD operon, is existed in some GIs and may uptake Fe2+ and Mn2+. Mn2+ is a second cofactor and an essential activator of the isocitrate dehydrogenase. The cleavage site of functional lambda integrase is 5’-TGCTGCGCCA-3’ in direct repeats at 3’-end of icd gene.The truncated lambda integrases (ECP_1132 and ECP_1135) are inactive because the transposon inserted the integrase gene by 5’-CCTGG-3’. This Fe2+/Mn2+ transport operon is predicted that is a recent product of horizontal gene transfer in E. coli because this operon is also existed in S. enterica and is not in a mobile GIs.
Application of High Precision ADC in Seawater Total Organic Carbon Quick Measurement
Authors: Ren Guo Xing , Tang Yong Zuo , Ma Ran , Liu Yan
Published: February 2012

Aiming at the requirement of fast-response high-precision in seawater Total Organic Carbon ( TOC) quickly measurement, this paper presented a design scheme based on AD7799.The system took 24-bit △-∑ ADC AD7799 as the core and HAMAMATSU H5784 Photo Multiplier Tube (PMT) as photo-electric sensor. The design realized the measurement of chemiluminescence that correlates to seawater TOC. The experiments in the laboratory and Qingdao sea area show that the system possesses stable operation and high reliability. The experiment results show that the measurement resolution exceeds 0.001 mg/L and the measurement accuracy is 0.01 mg/L.
Modeling and Validation of MBS Using Joint Force Actuator in ADAMS Car
Authors: Tang Ai Hua
Published: February 2012

With the advent of multibody dynamics software (ADAMS) , it has become one of the main simulation techniques to build a multibody system (MBS) in order to evaluate the dynamics performance. The modeling of some component parts such as anti-roll bars and torsion beam rear suspensions is always difficult for the unique structural and non-linear characteristics.A joint force actuator based on multibody dynamics was introduced to represent the component within suspension systems. The kinematics analysis of the torsion beam rear suspension was carried out to validate accuracy and rationality by means of joint force actuators in ADAMS/Car. The result shows that the joint force actuator can be used in the MBS modeling and simulation analysis of non-linear characteristics conveniently.
Quality Knowledge Management Facing Collaborative Products Manufacturing
Authors: Tao Li Yan , Shou Lin Ling
Published: February 2012

In the knowledge-economic century, technologies and ideas of knowledge management to are becoming the important means to improve quality management for enterprises to win the core competition. This paper focuses on identifying the quality knowledge and activities of quality management in the collaborative manufacturing process, distinguishing quality knowledge in the quality management which exist large numbers of data and building a quality knowledge management system model based on knowledge maps.
Research on Dichotomy Model Evaluation Method of Weighted Comprehensive Indexes
Authors: Zhao Ni , Zhang Juan Mei
Published: February 2012

It is an important link for supporting business operations and decision-making to select optimal model from multiple models. Based on the analysis on traditional dichotomy model evaluation methods, the paper presented a kind of method to evaluate model performance that consider multiple individual evaluation indexes to compute comprehensive index ranking score. The method solves the problem of difficulty for modeling personnel when using multiple traditional evaluation indexes to evaluate a group model that different conclusion caused by different methods. The evaluation example based on the method shows that the weighted comprehensive index based evaluation method is of reference value for the optimal selection of dichotomy model.
Synthesis of Coal Dust Depressor and its Application in Preventing Coal Dust
Authors: Cheng Fang Qin , Cheng Shu Yan , Guo Yan Xia , Cao Li Qiong
Published: February 2012

A novel coal dust depressor was prepared by alkalization and etherficayion reactions using wastepaper as raw material. The sample was characterized by means of FTIR spectroscopy (FTIR)、scanning electron microscopy (SEM)、X-ray diffraction (XRF) and viscometer measurements. The coal dust inhibitor was developed to suppress flying dust over coal dump and conveyor. The result shows that flying coal dust was prevented by intrinsic viscosity of coal dust depressor which was sprayed on the surface stock pile can make the surface material bond with each other to form layer of crust, having a role of dust prevention. Application of the coal dust depressor can reduce the losses of coal and protect the environment from being polluted.
Model and Algorithm for Vehicle Routing Problem with Time Windows and a Limited Number of Vehicles
Authors: Jia Yong Ji , Wang Chang Jun
Published: February 2012

In this paper, a useful variant of the vehicle routing problem, Vehicle Routing Problem with Time Windows and a limited number of vehicles (m-VRPTW) is given. The problem is to serve a number of customers at minimum cost by using a limited number of vehicles, without violating the time window constraint and the vehicle capacity constraint. The feasible solution of m-VRPTW may contain some unserved customers and third-party vehicles, such as taxies, are hired to serve these unserved customers. The mixed integer programming model of m-VRPTW is proposed and a two-phase algorithm based on insertion algorithm and tabu search algorithm is proposed to solve it. Experimental results show that our algorithm can yield effective and efficient solution and be capable of dealing with the m-VRPTW problems in real life conditions.
Transformer Fault Diagnosis Method Based on Gross Error Examination
Authors: Su Jie , Wang Xu Guang
Published: February 2012

This paper proposes a gross error judgment criterion and diagnoses the transformer fault by integrating the gross error judgment criterion and the characteristic gas ratio method. In this way it is possible to judge whether the transformer is in face of an incipient fault by examining the gross errors of the measured values of the fault characteristic gases, at the same time the fault probability could be calculated according to the remarkable level. And then in combination with the characteristic gas ratio method, the fault category and fault cause of the transformer could be figured out. The method has been validated by an actual example of fault diagnosis.
Analysis of Product Family Design Chain Using Strategy-Engineering Perspective
Authors: Zhi Hua Wei , Du Gang
Published: February 2012

Product family is widely used in the modern manufacture enterprise to alleviate the cost pressure taken from differential customer needs. The quality of product family design determines the ability of a company to gain competitive advantage. The presented work for product family design focus on engineering design field, and the influence from the enterprise strategy is ignored. Using value chain analysis as a tool, the concept of product family design chain could be formed by taking the strategic elements into product family development process. Design chain can be examined from three domains, namely strategy analysis, preliminary design and scheme optimization. The competition advantage of enterprise comes from the excellence in the each link of design chain. Through a series of concurrent engineering, product platform design bring the cost advantage, and the customization design realized the ascension of customer satisfaction.
Study on Hot Forming Process and Spring-Back of Ultra -High Strength Steel Based on ABAQUS
Authors: Yang De Sen , Liu Wen , Hu Guang Jun , Zhou Jie , Su Zhu
Published: February 2012

To research the key factor that affect on material characteristic of hot stamping, this paper studied the spring-back problem of hot forming of the ultra-high strength steel, "U" shaped part by using the combination method of numerical simulation and experimental verification. By obtaining the data of BR1500 HS isothermal tensile test, it established a "U" shaped part of thermal-mechanical coupled model which is based on ABAQUS to analyze the influences of forming speed and holding time on the forming properties. Simulation analysis showed that: When the forming speed of sheet metal is faster than 35mm/s, the rebound value is small, and further increase has no significant effect on the rebound; after holding 6s, the temperature quenching would become stable. The results verify the reliability of the finite element model. Also the study has provided a theoretical basis for determining the process parameters of the type of steel hot forming.
Application of Quantum Particle Swarm Optimization in Adaptive Notch Filter Design
Authors: Zhang Jie
Published: February 2012

Abstract: adaptive notch filter is a kind of apparatus which can eliminate single frequency or narrow-band interference, normal adaptive algorithm of notch filter is LMS algorithm, but the faster convergence velocity and the smaller steady error are difficult to gain simultaneously. Aimed at the weakness of LMS, the Particle Swarm Optimization (PSO) is studied deeply in the paper, based on the PSO; the quantum mechanic theory is added to improve it. Quantum Particle Swarm Optimization (QPSO) is researched and applied for adaptive notch filter which is proved more efficient in the noise control by MATLAB simulation. The new QPSO algorithm can balance the maladjustment and the searching ability of adaptive filter with a little calculation, the speed of convergence is faster than LMS and normal PSO algorithm.
Building Model on Product Innovation Design Based on TRIZ Theory
Authors: Zong Li Cheng , Yu Sui Huai
Published: February 2012

With the rapid development of the global economy, the multinational company products are rapidly into every corner of the world, the successful of leader in some industry such as APPLE,DELL,HP and so on are impress on Chinese enterprise. The successful of them made Chinese enterprise to profound realize that the root of enterprise’s survival and development is the innovation design .The innovation divide into five department by TRIZ ,which three of them in the middle guide by it ,that is Less Improvement, Radical Improvement and New Concepts .This process made innovation more targeted and purpose, greatly shorten the time and improve the efficiency of innovation. This paper aim at the process of product innovation design and researching and analysing the theory and tool of TRIZ to raise the model of Product Innovation based on TRIZ.
Optimization of the Stamping Direction for Complex Parts Based on 3D Mesh Model
Authors: Zhang Deng Xia , Gao An Tong , Sha Lin , Wei Ze Feng , Han Jun
Published: February 2012

A new algorithm directly based on 3D mesh model is presented to determine the reasonable stamping direction in CAE software. Compared with former similar optimization algorithms of the stamping direction, it can simplify the procedure and avoid the missing of some necessary details of complex parts, and it is automatic and intellective to determine the reasonable stamping direction. The feasibility of the algorithm has been proved by the creation of stamping directions of the automobile fender.
A Method of Measuring a 3-Dimensional Curve on a Surface with a CMM
Authors: Li Hai Tao , Wei Wen Jun , Dong Xue Zhu
Published: February 2012

In order to examine and evaluate the characteristics of a mechanical component, a 3-dimensional curve on the surface of the component needs to be measured on a coordinate measuring machine (CMM). A method of measuring a 3-dimensional curve on a surface with a CMM was put forward in this paper. The measuring method of each point of the curve on the surface is divided into three steps. The first step is to select some grid points of the surface near the measured point of the curve. Actually the measuring results are the coordinates of the center of the spherical probe and all of the grid points locate in the offset surface of the measured surface. So the probe radius should be compensated. In order to make the compensation reliable, easy and simply, some regular grid points where the probe center should be set are selected and a corresponding method of calculating the normal vector of the surface is used. A small surface patch of the actual surface is measured in the second step. In the last step, some new grid points are obtained after probe radius compensation. The real coordinates of the measured point is determined by using the interpolation method and the theoretical equation of the curve. The measuring method was used to examine the modification curve of a worm generated by linear cutter edge with two degrees of freedom and the results showed the coherence of the actual modification curve to the theoretical one.
Research of the Relationship between Hemp Fiber Disintegration Degree and its Chemical Composition
Authors: Ji Ying Chao , Wang Fei , Liang Yu Jia , Li Dan Yue
Published: February 2012

In order to solve the problem of degumming and short yarn of the hemp fiber, this paper mainly research the relationship between hemp fiber disintegration degree and its chemical composition. Then discuss how the contents of pectin, hemicellulose, cellulose and lignin in hemp fiber could affect the hemp fiber disintegration degree. Calculate and analysis the four factors’ affection degree by Grey Relational Analysis, and build four mathematical models between hemp fiber disintegration degree and each of its content at last. This paper makes a contribution to provide the theoretical basis to the degumming process of hemp fiber and the selection of spinning material.
Photocatalytic Degradation of Formaldehyde by TiO2 Nanoparticles Immobilized in Activated Carbon Fibers
Authors: Li Si Fang , Ye Guo Liang
Published: February 2012

Activated carbon fibers supported TiO2 nanoparticle photocatalyst was prepared by immersing activated carbon fibers in water suspended with TiO2 nanoparticles under sonication. X-ray diffraction and scanning electron microscopy were applied to characterize the crystallinity and morphology of the photocatalyst. The photocatalytic activity of the prepared photocatalyst was evaluated by the photodegradation of formaldehyde for indoor air purification. The result showed that the low-concentration formaldehyde in the polluted indoor air could be photocatalytically degraded over the prepared photocatalyst, with the formaldehyde concentration in the product air falling into the standard range that is specified by the Chinese Indoor Quality Standard.
Facile Synthesis of Hierarchical ZnS Microspheres and their Photocatalytic Properties
Authors: Wang Hong Mei , Lian Yuan
Published: February 2012

Hexagonal ZnS nanostructured spheres self-assembled from ZnS nanocrystals were successfully synthesized through a facile hydrothermal method using 1-butyl-3-methlyimidazole thiocyanate ([BMIM][SCN]) as both sulfur source and capping ligand. By combining the results of X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), field-emission scanning electron microscopy (FE-SEM), ultraviolet–visible (UV–vis) absorption spectra, a structural and morphological characterization of the products was performed. The photocatalytic activity of ZnS microspheres had been tested by degradation of Rhodamine B (RB) under UV light compared to commercial ZnS powders, which indicated that the as-syntherized ZnS spheres exhibited enhanced photocatalytic activity for degradation of RB.
Investigation on the Rheological Behavior of PA1010/POE/OMMT Nanocomposites
Authors: Zhang Yan Fei , Li Ying Chun , Hu Guo Sheng
Published: February 2012

The rheological behavior of PA1010/POE/OMMT nanocomposites was studied by using XLY-Ⅱ rheometer. The curves of lgτω～lgγ’ω, lgηa～lgγ’ω, lgηa～1/T were obtained. The experimental results showed that PA1010/POE/OMMT nanocomposites were pseudoplastic fluid. The apparent viscosity of the blends reduced with the increase of the shearing stress．Compared with PA1010/POE blends, the addition of OMMT increased the apparent viscosity. The viscous activation energy of PA1010/POE/OMMT blends declined as the increase of shearing stress, which indicated that the PA1010/POE/OMMT blends could be processed over a wide temperature at a high shearing stress.
Design of the Temperature Control System of the Giant Magnetostrictive Actuator
Authors: Zeng Fan , Lou Jing Jun , Zhu Shi Jian
Published: February 2012

Semiconductor refrigeration plate, temperature sensor, microcontroller STC12C5410AD and other circuits are used to design a new kind of temperature control system of the giant magnetostrictive actuator. Semiconductor refrigeration plate is controlled by the PID control algorithm for temperature controlling automatically.
Different pH-Values of Release Medium Influence the Drug Release from PTX-PCL Microspheres
Authors: Ruan Li Li , Wang Da Xin , Zhang You Wei , Zhao Jiong Xin , Zhang Xiu Fang , Chen Nan Liang
Published: February 2012

In this paper we study in vitro release of paclitaxel-loade polycaprolactone sustained-release microspheres. Different pH values release medium is used to simulate pH conditions in different parts of body, and determination the paclitaxel in Microspheres by High Performance Liquid Chromatography according Chinese Pharmacopoeia 2010. The experimental results indicate that the microspheres release rates of same drug loading content in buffer solution of pH 7.35 is the fastest, and in the pH 1.2 is the slowest. The drug release behavior according to the first-order model and it is not affected by drug loading rate of microspheres. The prepared paclitaxel-loade polycaprolactone sustained-release microspheres has good sustained release effect in different release media, and the results can provide references for further study of in vivo release.
The Output Researching of a Cascaded Multilevel Class-D Power Amplifier
Authors: Xu Guo Hua , Zhang Ying , Dong Ming , Meng Qing De
Published: February 2012

A high efficiency switch-mode power amplifier based on a cascaded multicell multilevel circuit topology is introduced in the paper. A multicell topology being operated in a unipolar phase-shifted PWM control to switch-mode amplifier system is introduced. After analysising a single-phase H-bridge unipolar PWM inverter’s output, the paper emphasis on the researching of the output of a Cascaded Multilevel Class-D Power Amplifier. The paper analyzes the advanced characteristic of the cascaded multilevel technique. Then a cascaded multilevel class-D power amplifier is built in the laboratory. The result of measurement shows a good following performance and stability.
A Fractal Model for Gravity Sedimentation of Ultra-Fine Particles Suspension
Authors: Zhou Shao Ping , Yuan Quan , Ge Xiao Ling , Li Pei Ning
Published: February 2012

The sedimentation in the field of gravity provides a practicable and scientific principle for solid-liquid separation of ultra-fine particles. According to the fractal theory, a model of ultra-fine particles for gravity sedimentation was developed, considering the aggregation effects and particles interference, and the aggregation promoting coefficient was put forward. The fractal structure and FSD of aggregates were also analyzed. Furthermore, the comparison between theoretical and experimental values of ultra-fine particles sedimentation showed that the two results were more consistent with each other for the suspension concentration ranging from 1 wt% to 5 wt%.
Correlation Analysis Method and its Application to Interpretation of Local Gravity and Magnetic Anomalies in Eastern Tianshan, China
Authors: Zhang Chun Guan , Yuan Bing Qiang , Li Yu Hong
Published: February 2012

Based on detailed analysis of Bouguer gravity anomaly and magnetic anomaly by reduced to the pole, this paper uses correlation analysis method to analyze local gravity and magnetic anomalies of different filter scales, including filter scales of 50km, 90km, and 130km, and then discusses the contributing factors of local gravity and magnetic anomalies in eastern Tianshan. The results show that local gravity and magnetic anomalies are cogenetic anomalies in some areas, such as northeastern Santanghu, Shaqiuhe, southern Huangtuya, northern Dikan, and western Qijiaojing, and gravity and magnetic anomalies are allogenic anomalies in other areas. The study reveals that local gravity and magnetic anomalies are chiefly caused by Cenozoic – Mesozoic strata with lower density and weaker magnetism in northern Santanghu, and igneous rock with higher density and stronger magnetism in Shaqiuhe, and uplifting of older strata in northern Dikan, and Carboniferous strata with higher density and lower magnetism than its south and north areas in Qijiaojing. The study also reveals that local negative gravity and magnetic anomalies are chiefly caused by Cenozoic – Mesozoic strata with lower density and weaker magnetism, while local positive gravity and magnetic anomalies are mainly caused by Pre-Jurassic strata higher density and stronger magnetism in southern Huangtuya.
Research on Stitching Algorithm of Large Aperture Optical Elements Piecewise Measurement Data
Authors: Zhang Dong Xu , Wang Zhen Zhong , Guo Yin Biao , Yang Feng , Zhang Ning Ning , Zhang Yan Ting , Ye Hui
Published: February 2012

Due to the range of the measuring system is limited in the measurement of large aspheric optical elements, test is hard to be once fulfilled, so coordinate measurement based on multi-section stitching is proposed, and the least square mathematical model of large aperture optical elements multi-section stitching is built. Moreover, the profiler Talysurf PGI 1240 made by Taylor Hobson company is used for study. The result shows that, the method is suitable for multi-section data stitching for large aspheric optical elements, and possesses many advantages, such as fast speed, high accuracy and strong operability, etc.
A General Space Vector PWM Scheme for Multilevel Inverter
Authors: Lu Wen , Wei Li , Ren Hui
Published: February 2012

This paper introduces a simple space vector PWM algorithm for a cascaded multilevel inverter. The scheme determines the location of the reference vector easily. It uses space state equation to get the value of vector. A cascaded thirteen-level inverter is used to explain the scheme. The scheme can be easily extended to n-level inverter. It is applicable to cascaded multilevel high voltage inverter and cascaded active compensation device. The result of simulation verifies that the scheme is useful in improving utilization of the direct current (dc) link voltage and reducing THD.
Analysis of a Mountain Side Slope Stability Based on Seepage
Authors: Yuan Wei Bin , Dai Chuan Xin , Yao Ji , Wang Lie De
Published: February 2012

The soil physical mechanics parameters of a mountain side slope were gained upon field investigation and indoor rock mechanics tests. After that, Slide software and Geostudio software were adopted to make the mountain side slope seepage field analysis and side slope stability analysis based on seepage. At the end, the preliminary treatment scheme of the mountain side slope anchorage was proposed.
The Design of Portable Motorcycle Exhaust Analyzer Software System Based on the Operating Mode Method
Authors: Yan Jin , Chen Hong Yan , Cheng Min
Published: February 2012

The motorcycle exhaust analyzer based on the operating mode method in existence occupies a large area and is very expensive. In this article, the small industrial computer motherboard is used, and the software system of the portable motorcycle exhaust gas analyzer based on the operating mode method is designed, it realizes convenient detection about the motorcycle exhaust.
FEM Analysis on the Phenomenon of Bilayer Nanofilm Bending into Nanotube with Effects of Adsorption and Temperature
Authors: Gao Feng Ling , Feng Lu , Liu Mei Hua , Yang Wei
Published: February 2012

Nanotubes, fabricated by mechanical bending of thin films, have been widely used in numerous fields. For a bilayer nanofilm, it could bend itself driven by effects of adsorption and ambient temperature. Therefore, in this work, we simulate the phenomenon of bilayer AuSi nanofilm bending into nanotube with the effects of surface stress induced by vdW interaction between adsorbed O or Hg atoms and atoms on Au surface and ambient temperature change by finite element emulation. The curves of nanotube calculated by finite element software accord with theoretical prediction results very well, that demonstrate our theoretical prediction formula has a great feasibility and efficiency in practical application.
Modeling and Simulation of Hydraulic Power-Assistant Steering System Based on Power Bond Graph Method
Authors: Fang Gui Hua , Chen Chao , Liu Jin Feng
Published: February 2012

The structure and the operating principle of automobile hydraulic power-assistant steering system (HPS) are studied. The state-pace equation of the system is established by applying power bond graph method. The simulation of HPS is carried on in Simulink which is a software package of Matlab, and the dynamical properties of HPS are analyzed under different conditions. The simulation consequences provide theoretical basis for performance analysis and optimization design of HPS.
Study on the Application of Network Structure of Subway Integrated Supervisory and Control System
Authors: Xing Hong Xia
Published: February 2012

The present study explores the access of subway integrated supervisory and control system and all levels of mechanical and electronic subsystems, and discusses the network structure scheme of subway integrated supervisory and control system. After analyzing the merits and disadvantages of all kinds of network structures, the networking problem in subway integrated supervisory and control system that needs urgent solution has been raised.
The Benchmarking of ESP Hardware-in-the-Loop Test Bench with Data from Real Vehicle
Authors: Li Jian Hua , Song Chuan Xue , Jin Li Qiang
Published: February 2012

The development of ESP Hardware-In-the-Loop(HIL) test bench has brought great benefit to the development of ESP system and could shorten the development period. Therefore the accuracy of ESP HIL bench is crucial to the development of ESP system. The adjustment of vehicle parameters is an important section in the simulation model and it decides the accuracy of the bench to a great extent. The vehicle parameters from actual measurements are limited, so it is very difficult to obtain a high-accuracy simulation model. The article offers a way to solve this problem. With CANoe from Vector Corp., the experiment data were gathered from actual vehicle and returned to simulation model through CAN telecommunication. This will enable the simulation model to operate in the same mode of actual vehicle. By contrasting the output of response, the vehicle parameters will be adjusted step by step, until the response of simulation model is same as the one of actual vehicle.
Farmers Behavioural Attitudes towards WUA: An Empirical Investigation from Heihe River Basin of Northwest China
Authors: Liu Qi Jun , Li Feng Rui , Li Zhao Nan
Published: February 2012

Water user association(WUA) was considered as an effective means of solving water shortage problem. Famers’ enthusiasms of participation in WUA were not high in inland arid regions of northwest China. The research sought factors influencing farmers’ behavioural attitudes to WUA. We took the middle basin of Heihe River as study area, by an empirical investigating method with questionnaire, used the analysis of logistic regression model, to explore factors affecting farmers’ behaviours toward WUA. The emperical results showed that following factors were most important for farmers to join a WUA: (1) The farmers personal characteristics such as education, being a village cadre, and health status; (2) The family factor was the decision making of planting structure; (3) The natural endowment factors were area of water right and land patch. Finally, recommendations were put forward to provide possible references for water authorities.
A Novel Thiocyanate-Selective Membrane Sensors Based on Salicylaldehyde-O-Aminophenol Binuclear Copper (II) Complex as a Neutral Carrier
Authors: Sun Ai Li , Chen Yue Hua , Zhu Qian Hua
Published: February 2012

A new potentiometric thiocyanate-selective membrane sensor based on salicyladehyde-o-aminophenol binuclear copper (II) [Cu2(II)-SOA] complex as a neutral carrier is reported, which displays a preferential potentiometric response to thiocyanate ion and an anti-Hofmeister selectivity sequence in the following order: SCN- > Sal- > ClO4- > I- > NO2- > Br- > Cl- > NO3- > SO32- > H2PO4- > SO42- . The sensor exhibits a near-Nernstian potential over a wide linear range of 6.0×10-7 - 1.0×10-1 M with a detection limit of 2.0×10-7 M and a slope of –56.2 mV/decade in pH 4.0 of a phosphate buffer solution at 20 °C.
Effectiveness Observed by Passengers Taking the Taiwan High Speed Railway Service: Especially their Observation of Overall Quality and Satisfaction
Authors: Chiu Chin Hsin , Chen Hsuan Yi , Liang Chii Hwa , Ho Li Hsing
Published: February 2012

Abstract. This paper is regarding research concerning Taiwan’s High Speed Railway (THSR) service; its quality and performance. Most of the passengers preferred this transportation when compared with other trains because it is clean, convenient, comfortable, and saves time, while offering high quality service. The paper has 5 service quality dimensions. It includes 28 items in the form of a questionnaire for passengers which focused on the Hsichu station. The first dimension concerns boarding the train; the second is inside the train station; the third is on the platform; the fourth is riding the train, and the last one is leaving the THSR station. The analysis shows the Strengths, Weaknesses, Opportunities, Threats (SWOT) and the Importance Performance Analysis (IPA). The research is in regard to passenger’s satisfaction with the quality of service and customer satisfaction.
A High-Efficiency Cascade Multilevel Class-D Amplifier
Authors: Xu Guo Hua , Zhang Ying , Dong Ming , Xu Lu Wei
Published: February 2012

A switch-mode power amplifier based on a cascaded multicell multilevel circuit topology is introduced in the paper. Due to the Carrier-Based phase-shifted modulation of the individual switching cells, the output voltage ripple of the total system is considerably small. Compared with traditional class- AB amplifiers that are very poor at efficiency, the proposed amplifier has the efficiency of 90% at the smaller distortion level. A multilevel class-D amplifier’s mathematic model is analyzed. The paper lays emphasis on the design of the sliding mode control and deducts the parameters, and then develops a 2kW cascade multilevel class-D power amplifier adopting sliding mode control. The research results show that this kind of amplifier increases the system bandwidth, which provides the system with fast following performance and stability, high efficiency, and low THD value of output signals.
Optimize Track Design and its Simulation Based on Simulated Annealing Algorithm
Authors: Yang Xiao Hui , Liu He Sheng , Hu Long Long
Published: February 2012

In this paper, in order to optimize the shape of a snowboard course, we address the problem with the consideration of four key parameters.Based on a detailed physical analysis, we establish a model to simulate the trajectory of a skilled snowboarder by using Simulated Annealing. Finally, we adopt (SA) algorithm to find out the optimal snowboard course.
The Fire Identification of Electric Heating Cable to Solar Energy Water Heater
Authors: Wang Lian Tie , Xia Da Wei , Meng Qing Shan , Wang Xin Ming
Published: February 2012

Nowadays, technology rapid development, the living standard of people also is rising, household devices gradually to the trend of electrification development, in the meantime, the fire also increase annually in caused by electrical equipment. The solar energy water heater used more widely, because the product quality, installation and improper use fire in the number of rising sharply. Among them, caused by electric heating cable fault accounts for a bigger chunk of fire, so the identification of electric heating cable fire are particularly important. We can made comprehensive Analysis on electric heating cable trace utilize the technical means of macroscopical method and metallographic method etc., judge its melting nature, can provide strong technical support for fire investigation.
Fast Prediction of Temperature by FEM in Hot Strip Rolling
Authors: Mei Rui Bin , Cai Ban , Li Chang Sheng , Liu Xiang Hua
Published: February 2012

Finite element method (FEM) has been one of the most important numerical simulation tools with the development of computer technology. However, it is only used to simulate and analyze different process offline in many fields because of the longer computational time. The influencing factors of prediction of temperature in the strip rolling by FEM including equations, mesh and storage of matrix was investigated in the paper. The lumped heat capacity matrix was introduced to resolve the oscillation problem and improve precision. Furthermore, the refined elements layer upon layer was discussed to improve solution efficiency and precision. In addition, in order to improve the solution efficiency one dimensional compressed storage method was employed to carry out in the solution of equations. The FEM program code for the solution of temperature was embed in the online rolling control system program successfully. The predictive results are in good agreement with the measured value. The computational time and precision are satisfied in the strip rolling process.
Minimum Fluidization Velocity of Binary Particles with Different Geldart Classification
Authors: Tang Jun , Chen Xiao Na , Lu Chun Xi , Zhang Yong Min
Published: February 2012

The minimum fluidization behavior of four different binary particle systems with different Geldart classification is experimentally investigated by carrying out slow defluidization of an experimental cold device of I.D. 300 mm and height 3 m. The solid particles are four kinds of quartz sand particles with equal density, corresponding to Group A, B, C and D particles of Geldart classification, respectively. The fluidization processes can be divided into packing state, partial fluidization state and complete fluidization state. The difference in physical properties and mass fraction of the two constituent solid phases is found to strongly influence the fluidization behavior and the minimum fluidization velocity during the slow defluidization process. For binary particle systems, the minimum fluidization velocity decreases with increasing mass fraction of the component whose fluidization quality is better. Finally, the models of Noda et al. (1986), Cheung et al. (1974) and Chiba et al. (1979) are used to predict the minimum fluidization velocity of above binary particle systems.
Quantitative Analysis of the Strategic Decision on Graduate Employment
Authors: Liu Yue Qian , Xu Yu Ting
Published: February 2012

With the reform of employment system for graduates，college graduates have more decision-making power when choose jobs．Besides，the labour relations with the men of contract provide premise and condition for graduates pursuing maximum benefits．The process of graduates employment-decision is a kind of rational behavior which should weigh gain and loss carefully．Facing with a variety of opportunities, graduates are generally at a loss how to make a strategic decision．Aiming at such situation，we should first analyse the factors that influence job-decision objectively，then apply the Analytic hierarchy process method to decide the weight of each factors，finally，we can use the comprehensive evaluation method to choose a satisfied job．
Defects Rapid Identification of Marking Region Based on Binarization and BP Neural Network
Authors: Chen Jian , Wang Jin , Lu Guo Dong , Jiang Xiao Ming
Published: February 2012

The status that domestic technology forming the high-pressure gas bottles surface leading to the poor marking quality is analyzed. The rapid image processing method based on Binarization is presented to identify the defects position and profile from the marking region quickly, and it is designed with four steps: CCD capture, pixel enhancement, edge identification and feature extractions. By the statistical analysis of the project practice, the defects is defined as four typical types in shape, and then through the BP neural network training to identify the defects type effectively and driving the machine pre-set coping strategies to make appropriate responses automatically without manual interaction. The final test shows that the automatic high-efficiency marking defects identification is achieved
Investigation on the Non-Newtonian Fluid Flow in a Single Screw Extruder Using Incompressible SPH (ISPH)
Authors: Dong Tian Wen , Jiang Shun Liang , Huang Xing Yuan , Liu He Sheng , Huang Qiang Qiang
Published: February 2012

Based on the incompressible smoothed particle hydrodynamics (ISPH) method, a program was developed to simulate the non-Newtonian fluid flow in the mixing section of a single screw extruder. The transverse flow in the extruder is mimicked by one 2-D lid-driven cavity flow. The mirror particles are used to treat boundary. The power-law model is used to calculate the viscosity of the fluid. The shear-thinning, the shear-thickening and Newtonian fluid in the single screw extruder are simulated and deeply analyzed. Through comparing the velocity profile along the centre of screw extruder with the theoretical solution, this method has been proven to be accurate and effective. It laid the foundation for the simulating of the more complex 3-D model.
A Tolerance Analysis Method for Assembly Yield
Authors: Mao Jian , Cao Yan Long , Yang Jiang Xin
Published: February 2012

The major objective of tolerance analysis is to check whether the resultant or assembly tolerances conform to the design specifications in individual components. Although the first four moments were used to describe assembly reject rate, there are no further applications in reliability index and assembly yield. Therefore, a novel tolerance analysis method to estimate the assembly yield based on first four moment reliability index is proposed. Firstly, some basic definitions are given. Secondly, the tolerance analysis model based on the first fourth moment reliability index (FMRI) is developed. Furthermore the assembly yield models based on FMRI, for both individual design function and multi-design functions are presented.
Topological Optimization on the Board which above Flexible Clamping Stent Fixture
Authors: Wu Da Wei , Li Jing , Su Chang Qing
Published: February 2012

Topology optimization is a design method to seek an optimum distribution of material according to loading, restraint and objective. Topology optimization was carried out for board – finite element analysis is compared with the original design. The study shows that the stress which on the board was reduced to a great extent. The distribution of the stress was better than before .substantial reduction of quality achieves lightweight. It provides an important technical message for improvement design of the flexible clamping stent fixture.
The Research Status and Existing Problems of Microscopic Visual Servoing Based on Image
Authors: Liu Li Qun , Chen Kang Cheng , Chen Ya Zhe , Zhao Zhou Li , Hao Li Na
Published: February 2012

This paper introduces the basic principle of the microscopic visual servoing system based on image and summarizes systematically about the researching situation of microscopic visual servo based on image at home and abroad. From three aspects, which are Jacobin matrix calculating, automatic focusing technology of microscopic lens, and microscopic image fusing technology, it proposes some key problems to be urgently solved about the microscopic visual servoing based on image.
An Optimization Design in the HV nLDMOS by Taguchi Method
Authors: Chen Shen Li , Wu Tzung Shian , Chen Yun Ru , Chen Hung Wei , Shih Chun Hsing , Chen H.H.
Published: February 2012

This paper applied the Taguchi method to simulate the latch-up effect of nLDMOS to achieve an optimization design. The applied model is for an nLDMOS structure with high voltage well plus the adaptive (adjustment) layers of source & drain, and an N-type buried layer. Although the methods we could choose is abundant, we hope to effectively obtain the data which is useful for statistics in order to judge the correct characteristic of parameters. We applied the Taguchi method to perform an optimization in the paper. There are six parameters with two levels in this work, so we choose the Taguchi table to be L8(27). By this way, it can decrease the times of experiment much effectively.
A Pyridinium Dye as Chromogenic Probe for DNA Molecule
Authors: Zhang Guo Hui , Chen Jian Jun , Deng Yun Long , Sun Yun Hui , Cao Du Xia
Published: February 2012

A pyridinium dye with N-butyl-carbazole as an electron donor group and pyridinium cation as electron acceptor group has been synthesized. The crystal structure and photophysical properties of the dye in different solvents are researched. The interaction between the dye and DNA is also researched. The results reveal that the dye can be used as a DNA probe.
A New Method to Determine Internal Reduction Efficiency during Continuous Cast Bloom under Soft Reduction
Authors: Liu Ke , Zhang Jia Quan
Published: February 2012

To clarify the efficiency of internal reduction during continuous casting bloom when the technology of soft reduction is applied, a thermal-mechanical coupled FEM model was developed to investigate the internal reduction efficiency. Basing on the model developed in this article, the area variation of the mushy zone under soft reduction could be calculated. A new calculation method of internal reduction efficiency through the area variation of mushy zone was proposed. The variation trend of internal reduction efficiency as a function of soft reduction amount, calculated by two different methods, was introduced.
Preparation and Characterization of Magnesium Hydroxide Nanoparticles from Dolomite-Talc Ore
Authors: Jiang Xiao Qian , Ma Hong Wen , Li Ge , Yao Wen Gui
Published: February 2012

Pure magnesium hydroxide (Mg(OH)2) nanoparticles were synthesized successfully from dolomite-talc ore via chemical precipitation. Carbonate minerals in dolomite-talc ore were dissolved with hydrochloric acid, and Fe2+ was oxidized to Fe3+, then Fe3+ and Al3+ were removed by adding ammonia to adjust pH to reach 6. Magnesium hydroxide (Mg(OH)2) nanoparticles with about 20nm thickness and lamella shape were obtained successfully when pH>10 in the presence of a nonionic surfactant polyethyleneglycol (PEG) with 3wt %, which reached by adding more ammonia. The XRD results show that the amorphous precipitate with 87% Fe2O3 generates at pH=6. However, CaMg2Cl6 (H2O)12 generates when pH = 7, then disappears with the increasing of pH. Mg(OH)2 appears at pH= 9 and pure Mg(OH)2 particle is obtained at pH > 10. Meanwhile, PEG plays an important role in the growth of Mg(OH)2 nanoparticles.
Using Nonlinear Recursive Formulation for the Kinematic Analysis of Human Biomechanical Systems
Authors: Hwang Yunn Lin , Gau Wei Hsin , Lin Wen Huang , Hwang Shen Jenn , Chen Chien Hsin
Published: February 2012

Generally speaking, the human biomechanical systems can be classified into two main groups: open-loop and closed-loop systems. In this investigation, the nonlinear recursive formulation is developed for the kinematic analysis of human biomechanical systems. The nonlinear generalized Newton-Euler equations are developed for flexible bodies that undergo large translational and rotational displacements. These equations are formulated in terms of a set of time invariant scalars, vectors and matrices that depend on the spatial coordinates as well as the assumed displacement fields, and these time invariant quantities represent the dynamic coupling between the rigid body motion and elastic deformation. The formulation to solve equations of motion for human biomechanical systems consisting of interconnected rigid and flexible bodies is presented in this paper.
Influence of Continuous Extrusion Deformation on Microstructure of AZ31 Magnesium Alloy
Authors: Fu Rong , Gao Fei
Published: February 2012

Make continuous extrusion test on cast AZ31 magnesium alloy by TLJ250 continuous extruding machine, and observe and compare the magnesium alloy changes in mould of cavity before and after extrusion and in process. Result shows that: after AZ31 magnesium alloy is extruded continuously, big shear deformation occurs to the material, and the grains become fine, forming fine and even equiaxial grains. When metal flows in the cavity, the metal on top and bottom has bigger deformation, because the grain sizes at product surface and heart are different due the feature of continuous extrusion