bluuebunny/crossref_metadata_2025 huggingface dataset:
The Intelligent Scheduling Method of Elevator Group Control Based on Fuzzy Neural Network
Authors: Dong Yu Lin , Wang Xiao Ming
Published: February 2012

Elevator group control system (EGCS) is a complex optimization system, which has the characteristics of multi-objective, uncertain, stochastic random decision-making and nonlinear. It is hard to describe the elevator group control system in exact mathematic model and to increase the capability of the system with traditional control method. In this paper, we aim at the characters of elevator group control system and intelligent control, introduce the system's control fashion and performance evaluate guidelines and propose an elevator group control scheduling algorithm based on fuzzy neural network.
An Online-Monitoring System of Machine Tool Cutting Force
Authors: Wu Chang Zhong
Published: February 2012

Use the piezoelectronic sensor to test the signal then use the charge amplifier to amplify it,after several amplification ,the weak charge signal is amplified into voltage signal,after that convert the analog signal into dagital signal by the data acquisition board,then input the data into a computer,signal real-time collection and dynamic display can be achieved on the computer.Signal processing process disposes and analyzes the collected signal further,at last obtains the right cutting force signal dynamically,thus it can be used to test the monitoring system's stability and reliability
Application of ARMA Model in Forecasting Aluminum Price
Authors: Ru Yuan , Ren Hui Jun
Published: February 2012

Aluminum price is very complicated for containing many uncertainty factors. In recent years, ARMA model has been widely used to make models for financial temporal series which have high fluctuation frequency, because it can grasp the dynamic characteristics of temporal series. The article proposes a price prediction method based upon ARMA model through the analysis of Aluminum price. The result has proved that the model can fit Aluminum price fluctuation quite well and prediction results prove efficiency and dependability.
Study on Data Acquisition for Heavy Off-Road Vehicle AT Testing
Authors: Wang Er Lie , Chen Hui Yan , Tao Gang , Hu Yu Hui
Published: February 2012

Based on the analysis of the testing automatic transmission (AT), the AT’s solenoid valve control signals conditioning circuits and revolving speed F/V converter conditioning circuits are designed, and the data acquisition system is designed based on virtual instrument. The system is composed of the PCI-6024E data acquisition card, signal conditioning circuits and computer, and the acquisition procedure is programmed in graphical language LabVIEW. Finally, the data acquisition system has been verified on vehicle test bench which loads ZF-Ecomat 6HP500 AT. Controlling signals of switching solenoid valves, duty cycle signal of proportional solenoid valve, accelerator aperture signal, oil pressure signals and speed signals are collected, it turns out that the data acquisition system has good feasibility.
Application of Multi-Beam Technique in Microwave Tubes
Authors: Li Ze Lun , Huang Zhi Cheng , Huang You Jun
Published: February 2012

The applications of multi-beam technique in microwave tubes including klystrons and traveling wave tubes have been analyzed. A type of 5-beam traveling wave tube slow-wave structure was designed, and dispersion characteristics and coupling impedance characteristics were simulated. According to the simulated results, it can be concluded that dispersion of multi-beam traveling wave tube is satisfactory and the coupling impedance is high, and multi-beam technique can be widely used in microwave tubes because it can improve the plus and output power of microwave tubes.
Reconstruction of the Stone Tablet Based on Vectorization of Images
Authors: Zhang Jie
Published: February 2012

Traditionally, it costs a lot of time and efforts to reconstruct the stone tablet manually. The system which can transformat the image got by photography into the dxf file is proposed and make it possible to program automatically and to machine in numerical control machining. To get the dxf file, using the image preprocessing、 the surrounding eight pixels and the least square method to complete the Vectorization in this paper. Finally, the specific interface program to generate a DXF file is given. The result proved feasible and the comparison of the source image and the objective dxf file opened by AutoCAD is given in this paper.
Application of Multi-Mode Combined Polishing to Optical Manufacturing
Authors: Wu Xiao Hong
Published: February 2012

The object of this study is the application of Multi-mode combined polishing, which is combination of polishing technology mode and current high-end CNC machining technology, to optical manufacturing. Detailed analysis and explanation of application of multi-mode combined polishing to optical manufacturing are made, from the perspectives of basic information and Preston equation of multi-mode combined polishing. And thus demonstrate the crucial role and significance of application of this technology in further promote and enhance the precision of optical processing operation efficiency.
Research and Application in Image Processing Technology Based on the Embedded Parallel Computing
Authors: He Gao Ming , Wang Mei
Published: February 2012

It is the latest trend of recent research to handle a multi-media picture by using parallel processing technology.Image processing based on the embedded parallel computation is a new field, while not using a parallel processing technique to process the image in the traditional sense. This paper investigates an embedded image processing application parallel to reduce the load imbalance in order to achieve parallel structure.
Image Refination in the Application of Fingerprint Identification
Authors: Feng Bo , Zhang Li Jiuan , Zhang Hui Tao
Published: February 2012

Aiming at the existing fingerprint algorithm refinement not refined exist completely swallowed, skeleton, lines from lines problems such as center, the paper puts forward the rapid thinning algorithm, through the analysis of target of the direction of the trend lines around, choose to remove or keep connected point around, effectively solve traditional iteration algorithm has refined the problems, and refining the template image square ridge tracking, overcome the gradually to the main lines tracking algorithm are too complicated and not easy to realize. Finally the improved algorithm in FPS200 fingerprint sensor as acquisition device automatic fingerprint identification system for verification. The results show that the algorithm has a good refined effect, get the details of the image further satisfy the requirements of feature extraction.
Improved Shuffled Frog-Leaping Algorithm and its Application
Authors: Zhang Jing Min , Wu Cong Cong
Published: February 2012

This paper proposes an improved shuffled frog-leaping algorithm, the algorithm improves the subpopulation frog individual optimization way which is not just the worst individual optimization. "Guide optimal" probability and "guide suboptimal" probability are put forward. The experiments results of multiple problems of the TSPLIB show that the algorithm is feasible and effective.
Mechanical Properties of Ti1-x-yAlxSiyN Nanocomposite Studied by Ab Initio
Authors: Tan Xin , Xin Zhen Yang , Liu Xue Jie , Li Yu Qing
Published: February 2012

Using ﬁrst principles calculations based on the density functional theory, we have studied the structural and mechanical properties of Ti1-xAlxN and Ti1-x-yAlxSiyN metastable phase. Focus on the calculation of the Ti1-x-yAlxSiyN the cohesive energy, mechanical constants, elastic modulus and shear modulus. These calculated values were analyzed, then we obtained that Ti1-xAlxN lattice parameter decreased after adding Si, while the cohesive energy was rising, the mechanical properties decreased, indicating that in the case of the Al content determined, the structure of Ti1-x-yAlxSiyN is more stable than Ti1-xAlxN, but the mechanical performance ,stiffness and brittleness are reduced.
Influence of Comprehensive Materials Multimedia on the Students' Sports Motivation
Authors: Zhou Xiao Hui
Published: February 2012

Objective: probe into the influence of comprehensive materials multimedia on the students' sports motivation. Methods: the present study proceeds from the mode of teaching in the traditional physical education by the literature method, experimental method, Delphi method and the mathematical statistical analysis method to the comparison of the means of comprehensive materials multimedia in the physical education classes with the traditional education and study by the tool of the Sport Motivation Scale. Results: Practice of comprehensive materials multimedia in physical education can improve the students' sports motivation, activate their intrinsic motivation and guide it into a more active tendency.
Error Analysis on the Determination of Moisture in Oil by Karl Fischer Method
Authors: Zhang Xian Ming , Zhang Yuan Bo , Chen Bin , Li Ping , Guo Yu Chuan , Li Jiang Hua
Published: February 2012

Many factors affect the determination of moisture content in oil by Karl Fischer Method; there are objective factors such as water, samples and temperature environment, respectively 46# turbine oil and 25# transformer oil for example, from a gross error, correlation coefficient, and other subjective perspective, the causes of error are analyzed; correlation coefficient very close to 1 and most of the relative error in ( -0.15,0.00) are discussed, which shows that high measuring accuracy and precision of this method.
Design and Realization of a Certain Missile Servo Mechanism Test System
Authors: Zhang Dong Yu , Cheng Xu De , Xu Bing , Xue Xue Dong , Jiang Cheng Peng
Published: February 2012

To improve the efficiency and precision of missile servo mechanism testing, as the research object, a certain missile servo mechanism was studied in this paper. Based on PC/104 bus and virtual instrument technique, a missile servo mechanism automatic test system was presented, and the design and development on hardware and software of the system was described in detail. The system, which is featured with its simple operation, high precision, high reliability, scalable and portable test software, has been proved to be feasible by the test result.
Numerical Simulation of Supercavity Shape Design of High-Speed Projectile
Authors: Ying Wen Jian , Hou Jian , Wei Ping
Published: February 2012

In order to investigate the drag characteristics of high speed projectile in the states of supercavitation shape, this article presents the shape design’s method and gist of the underwater high-speed projectile. The first, the shape model is presented that is based on the potential panel method to the slender axisymmetric body. The second, the effect is analyzed comparatively that is from the difference shape to the supercavitation. The simulation results show that smaller drag coefficient of the projectile can be obtained by increasing the slenderness ratio and the barycenter position.
The Development of Automobile Body Control Module Simulation Testing System
Authors: Liu Yuan , Wang Zhi Xue , Zhuang Ru Ke , Ma Jian Hui
Published: February 2012

In order to meet the development and test demands of the body control module, the simulation testing system of the automobile Body Control Module was designed with the Hardware-in-the-loop simulation technology. Based on the function of BCM, the key technology of modeling and simulation, interface design and automation testing were explained to implement real-time simulation and testing for BCM. It assure the development quality, shorten the design period and reduce the product cost.
The Applications of Improved Genetic Algorithm on Hypersonic Vehicle Trajectory Optimization
Authors: Xu Liu , Li Wei Min , Zhang Lin , Zhang An Tang
Published: February 2012

The Optimal trajectory design for hypersonic cruise missile is an optimal control problem with strict terminal constraints and variable final time. The classical algorithms always encounter the problems of high sensitivity to initial guess and local convergence in solving this problem. Aiming at these problems, genetic algorithm (GA) which is of good global convergence is applied to designing the optimal trajectory for hypersonic cruise missile. In order to improve the convergence rate of GA and overcome its premature problems, this text introduces a predatory search (PS) strategy to speed the convergence of genetic algorithms, robust and closer to the optimal solution. This text compares the original genetic algorithm (GA) and improved genetic algorithm by the emulate experiments, and the results show that the PSGA is a more effective method to design the Optimal trajectory for hypersonic cruise missile than the original genetic algorithm.
Passivity-Based Control of Voltage Source PWM Rectifier Based on Synthesis Space Vector
Authors: Xu Sheng Sheng , Wang Jiu He , Mu Xiao Bin , Gu Wen
Published: February 2012

This paper presents passivity-based control of voltage source PWM rectifier based on voltage space vector synthesis. According to the power circuit of voltage source PWM rectifier, port controlled Hamilton dissipation (PCHD) model of this rectifier is established. Based on the PCHD model, passivity based controller can be derived. The controller is realized by modulation of synthetic space vectors .The passivity based controller can improve the system response speed and stability more effectively. The simulation results verify the feasibility of the proposed controller.
Structural Optimization and Aeroelastic Analysis of a Composite T-Tail Configuration
Authors: Liang Li , Qin Sun
Published: February 2012

In this paper, a composite T-tail model is developed, including structural finite element model and aeroelastic model, and then structural optimization and aeroelastic analysis are made. Through two steps of structural optimization, and aeroelastic analysis, some valuable conclusions are achieved, which are useful for future composite T-tail design.
Refactoring of Mechanical Model Simulation Software Based on Component Technology
Authors: Chen Xin , Zhao Jian , Fu Kai , Chang Ying
Published: February 2012

In this paper, we refractor existing mechanical model simulation software based on component technology. The original software, which was programmed by procedure-oriented method, has high coupling, poor usability and maintainability. So we redesign and develop it with object-oriented method and component technology. After refactoring, the software, with friendly interaction interface, reasonable structure and better reusability, can provide better service for users.
Design 3D Thermo-Mechanical Structures with Multidisciplinary Topology Optimization
Authors: Hu San Bao , Chen Li Ping , Zhang Yu , Jiang Ming
Published: February 2012

This paper presents an approach for solving the multidisciplinary topology optimization (MTO). To simplifying the description, a three-dimensional (3D) “heat transfer-thermal stress” coupling topology design problem is used as an instance to interpret the solving scheme. Unlike the common multiphysics topology optimization problem which usually modeled in a 3D domain or a 2D domain alternatively, the topology optimization problem mentioned in this paper has a 3D design domain (the design variable is referred as ρ1) and two 2D design domains (the design variable is referred as ρ2and ρ3) together in one mathematical model. Although all the model and solving method are based on a certain design instance, the solving scheme presented in this paper can be used as an efficient method for solving the boundary coupling MTO.
Numerical Simulation of Transient Flow Inside Nozzle on Gasoline Direct Injection Engine
Authors: Wang Yan Hua , Yang Shi Chun , Li Yun Qing
Published: February 2012

To achieve transient flow characteristics at exit of nozzle orifice on gasoline direct injection engine, two phase Euler-Euler schemes was used to simulate the internal flow of the swirl nozzle. Different flow characteristics were calculated in the simulation. Different kinds of nozzle configuration were studied. Cavitaion and swirl flow occured in the nozzles. Injection hole configuration matters more than area variation of swirl tangential slot to discharge coefficient of the studied nozzle. Discharge coefficient changes a little along the injection hole length. The area of the swirl tangrntial slot plays an important throttling action in nozzle internal flow. Smaller area of swirl tangential slot generates larger degree cavitation but smaller mean injection velocity. Turbulence kinetic energy changes with the time of cavitation and swirl field occurring and the nozzle configuration. Before the appearance of cavitation, smaller inclination angle of orifice can generate more turbulence kinetic energy. After that moment, turbulence kinetic energy varies with different configuration. Along injection hole length, turbulence kinetic energy obviously varies. These flow characteristics affect primary atomization and will be as input for next spray simulation. They are also applied to design reference for injection nozzle.
Design of the Real-Time Monitoring and Intelligent Diagnosis System in Gas Blower
Authors: Wang Feng Suo , Wang Tao , He Xue Wen
Published: February 2012

Equipment monitoring and fault diagnosis is a focus in the researching the industry. With the improvement of the safety, stability and reliability about the equipment; and the application of computer network technology, signal analysis and processing technology, these make more and more attention that online monitoring and fault diagnosis mode are based on network. In the context, combined with “The Online Monitoring and Fault Diagnosis System of Gas Fan in Converter OG” system in some steelmaking plant, the gas fan is taken as research object, the monitoring vibration and fault diagnosis system about the gas fan will be made and developed in this paper. The practice shows that the scheme of the developed system is feasible and practical. Convenient operation, inspection rapidly, diagnosis accuracy highly, which have satisfied the production need and remarkable economic benefit for the corporation.
Stress Analysis of the Biopresthetic Heart Valve with Different Thickness
Authors: Yuan Quan , Ma Hai Bo , Liu Tian Qi , Zhu Hai Yan , Zhang Cheng Rui
Published: February 2012

The stress with different shapes under the same load is analysed and the thickness of the leaflets 0.2mm and 0.4mm is compared by us. We creat the spherical, paraboloidal and ellipsoidal curved surfaces in accordance with geometrical features. The experimental results of the finite element analysis show that stress distribution of the same bioprosthetic heart valve leaflets with different thickness is different. The maximal primary stress with the thickness of 0.4mm is lower than the others.With the same thickness,the stress of the ellipsoidal valve leaflets is lower. This work is very helpful to manufacture reasonable shaped valvular leaflets and to prolong the lifetime of the bioprosthetic heart valve.
Numerical Simulation Based on CFD for the Movement Field of the Hydraulic Poppet Valve
Authors: Shi Xiong , Chen Jun
Published: February 2012

Based on the physical numerical modeling of the hydraulic poppet valve, the inside flow field was simulated by numerical method of the dynamic mesh technology of Fluent. The analysis results indicate that the intake rate and flux are reduced by minishing the poppet. And the eddy section’ s length of the intake and the concave corner of the valve core is gradually minished and disappeared at last.
A Study on Integrated Control for Four-Wheel Steering System to Enhance Vehicle Lateral Stability
Authors: Yang Bin , Wan Mao Song , Sun Qing Hong
Published: February 2012

This paper presents the design of integrated control for four-wheel steering (4WS) vehicle. A vehicle nonlinear dynamics model is built based on a lateral dynamics simplified linear model. A more accurate sideslip and yaw rate controller is used for lateral dynamics model of 4WS vehicle. Then a vehicle model based on the individual channel and partial decoupling design paradigm is identified from the vehicle dynamics. The sideslip and yaw rate controller is based on a linear multivariable combined with lateral dynamics model and the front and rear steering angles. The results of a stability analysis and simulations are presented to show that the 4WS integrated control system can markedly enhance good vehicle lateral maneuverability.
Design of Detection System of Traction Motor Commutator Based on Computer Vision
Authors: Zhang Jian Hui , Xu Ying Ying
Published: February 2012

The paper presents a new automatic detection system of DC traction motor commutator, which captures the image of traction motor commutator through CCD (Charge Couple Device) camera in real time, and recognizes the eigenvalue of commutator image by utilizing image processing technology. Meantime, the system takes it as the localization signal of numerical control machine. Therefore, computer vision controls cutting tool working instead of eyes in this system. The system has high-performance of precision and real time proved by experiment, so which has a certain value of practicality.
Fast Gabor Filterbank and its Application in Fingerprint Texture Analysis
Authors: Zhang Yu Jun , Yu Miao , Zhao Wan Tong , Xu Yang
Published: February 2012

Minutiae-based matching is the main method of fingerprint recognition. Anil K. Jain brought forward a method (FingerCode) which use Gabor filter to extract the texture feature of fingerprint and match it. In order to get a faster algorithm of fingerprint identification, the properties of the real part of Gabor filter are analyzed and the Gabor filter algorithm is accelerated in special conditions and is validated by experiment, which decreases the computational complexity from O(n2) to O(n).
Iterated Cubature Kalman Filter for State Estimation of Maneuver Reentry Vehicle
Authors: Mu Jing , Wang Chang Yuan
Published: February 2012

We present the new filters named iterated cubature Kalman filter (ICKF). The ICKF is implemented easily and involves the iterate process for fully exploiting the latest measurement in the measurement update so as to achieve the high accuracy of state estimation We apply the ICKF to state estimation for maneuver reentry vehicle. Simulation results indicate ICKF outperforms over the unscented Kalman filter and square root cubature Kalman filter in state estimation accuracy.
Study of Precise Measurement Algorithm Based on Machine Vision
Authors: Yao Yu Qin , Wang Wen Bin , Ju Hui
Published: February 2012

An precise measurement algorithm based on machine is presented, first, salt and pepper noise has been pushed into original image, then the image with noise was under a median filtering，output image is well preprocessed, and distortion in image has been corrected by Camera Distortion Correction. The corrected image was detected by Canny operator on its edge then the image’s edge was extracted by the maximum variance method on certain threshold, and the output image is showed in gray level, then the gray level was under interpolation computation by bilinear interpolation function to make its edge be detected at sub-pixel level. In this paper, the combination of image procession and camera calibration is practically and effectively fulfilled the precision requirement of the system.
Structure Design of Piezoresistive High-g Acceleration Sensor and Finite Element Analysis
Authors: Liu Li Shuang , Zhou Han Chang , Ye Jing Han , Guo Hua Ling
Published: February 2012

On the basis of the acceleration measurement of high impact, a high-g acceleration sensors of the piezoresistive beam - island structure at four-terminal all fixed supported was designed. Its structure was analyzed. The reasonable structure parameters were chose. And the parameter simulation and modal analysis were completed with ANSYS software. The results show that the sensor can resist 200,000 g overload and meet high impact test requirements.
Modeling Study of Aircraft Based on Small Perturbation Equation
Authors: Yang Du Wei , Zhou Jian Zhong , Dong Jun Chao
Published: February 2012

In aircraft flight control law design, the first key is to establish actual aircraft mathematical model, then according to the model of dynamic output information, analysis control law design is appropriate. But in the movement the aircraft is a complex dynamics system, modeling is very complex. This paper firstly carry out comprehensive feasibility analysis, on a plane modeling consideration simplified, secondly, in actual applications verified using the perturbation method of nonlinear equation linearization, establish the plane mathematics model.
Thermal Stability of the Hemp Fibers and Fabrics
Authors: Liu Xiao Dong , Bai Xiao Gang , Zhang Zhuo
Published: February 2012

With the thermal gravity analysis and relative breaking strength test, both crystallization variability and the important temperature is determined in heating process of hemp fibers. Meanwhile, the critical time and temperature is got which have a effect on relative breaking strength of hemp fibres and the hemp fabric appearance. Those data about thermal stability is helpful for hemp manufacturing and processing.
Rapid Development of New Sanitary Ware Products of Ceramics and Application Study with Computer
Authors: Yang Yue Wu , Zhang Zhi Fei
Published: February 2012

The "Hole Radius of Ray Light" technology is used to produce 3D solid part of ceramic sanitary ware products, then the solid part is transfered into 3D point cloud graph by 3D scanning algorithm. For standard physical product , 3D point cloud graph of which can be obtained by quasi-direct firing scanner. Such contractive rate therein firing is determined by comparing two points cloud map above with our specific algorithm. According to the contractive rate grading reversely the designated solid product, then 3D lofting cloud graph is obtained.,then the solid part is produced. With rapid prototyping, corresponding mold is easily formed to product, which solves in one off the discrepancy between sanitary product and design. Independent of specific sanitary ware, our approach simplifies or eliminates parts of product process and reduces developing costs.
Microstructures and Toughening Mechanisms of Micro-Crack Zone for Ceramic Materials
Authors: Li Bin
Published: February 2012

A toughening model of micro-crack reinforced ceramic matrix composites is presented. It was shown that alternating iteration method can estimate the main micro-crack interaction efficiently and accurately, making the statistical assessment possible. The constitutive equation is obtained through micromechanical considerations based on micro-crack zone toughening.
Suzuki Reaction Catalyzed by Pd(II) Anchored on Polymer in Supercritical Carbon Dioxide
Authors: Fan Guo Zhi , Duan Zhen Xiao , Wang Min
Published: February 2012

Palladium chloride anchored on polystyrene modified by 5-amino-1,10-phenanthroline was prepared and used as catalysts for the Suzuki cross-coupling reactions of aryl halide with arylboronic acid in supercritical carbon dioxide without use of organic solvent. The heterogeneous catalyst revealed excellent and recoverable catalytic performance for a wide range of aryl halides substrates. It can be easily separated from the reaction mixture and reused for six recycles without significant loss of catalytic activity.
Experiment Research of Flexural Behavior of Reinforced RC Beams Strengthened with the External Prestressed CFRP Plates
Authors: Kang Kan , Zhang Peng , Liu Feng Tao
Published: February 2012

Based on the the self-developed prestressed CFRP plate anchorage,the test specimens comprised 5 RC beams strengthened with the way the external prestressed CFRP plates,the research on the different prestressed tension and different span beam about the influence of the bending capacity , ultimate bearing capacity,cross section strain, CFRP strain and deflection of the test reinforced beams on the research. The test results showed that: the externally prestressed CFRP plate can obviously increase of the flexural performance of RC beams, and improve the utilization rate of the strength of the CFRP plate, through the external prestressed anchor of CFRP plate for a tension, reducing the RC beams crack, and improving the ductility of the RC beams.
Biodegradation Mechanism of Aniline Aerofloat by Bacillus vallismortis Isolated from SBR System
Authors: Song Wei Feng , Deng Qi
Published: February 2012

Aniline aerofloat [dianilino dithiophosphoric acid (C6H5NH)2PSSH], is an organic flotation reagent used frequently in lead sulfide mineral (PbS) flotation. It’s a refractory organics in floatation wastewater for it’s hard to be degraded and remains for long. Chemical and physical methods are widely used for treating aniline aerofloat, but that will bring high cost and secondary pollution. In this paper, an aniline aerofloat–degrading bacterium which used aniline aerofloat as sole carbon and energy source was isolated from SBR (sequencing batch reactor) system and the biodegradation pathway of aniline aerofloat was inferred based on the biodegradation mechanism of aniline with physicochemical phenomena of medium.
A Phylogenetic Analysis for Gene ITPK1
Authors: Luo Kun , Luo Dong Hui
Published: February 2012

Inositol 1,3,4-trisphosphate 5/6 kinase (ITPK1) is a pivotal enzyme in producing IP6 , a moleculae that play an essential role in many biochemistry process in mammal cells. In this paper, two phylogenetic trees are constructed based on the mRNA sequences and the protein sequences, respectively. The results indicate that the protein sequences are more conserved than mRNA sequences in primates. Although both plant and animal have an abundant distribution of ITPK1 domain, there exists a great variation in protein sequence between plant and animal. The protein-based tree reflects an evolution orders that is consistent with that of organisms evolution. Z-test of selection indicates that evolution of protein ITPK1 is caused by selection pressure.
Event-Based Modeling of Essential Medicines Selection with Numerical Material
Authors: Xu Qiang
Published: February 2012

The purpose of this study is to explore new methods on essential medicines selection when experimental materials disable. This paper deals with a novel system design and optimization by the tools of computer programming for the first time, successfully solving a serial problems of medicines selection in facing 18 cases after 20 runs of simulation for each case. The significant outcome of computer printout provides a sound basis for optimally choosing essential medicines in the promising reality of social medicine revolution. This original research has led to the discovery of a fast and costless selection principle for not only medicines selection.
Research on Characteristics and Three-Dimension Geologic Model Building of the Chang2 Reservoir, Yanchang Formation in Zhifang Area, Zhidan Oilfield
Authors: Qiang Kun Sheng , Wang Jian Min , Tian Xin Wen , Lü Xiu Xiang , Wang Li
Published: February 2012

Through the reservoir of Chang 2 member in Zhifang area, Zhidan oilfield is typical of low porosity and low permeability reservoir rocks, using casting thin sections, scanning electron microscopy and physical analysis, etc., starting with the reservoir characteristics of Chang2 member, we have understood its causes and characteristics of low permeability. Using sequential indicator simulation and based on the target body method, we established the head of the construction of the reservoir model in Chang 2 member, using the sequential Gaussian simulation method combined with phase control principle, a model of reservoir properties in this area was established, Getting a high quality reservoir and field development and deployment of later development and further adjustments to tap the potential pratical guidance.
Synthesis, Characterization, and DFT of a Novel Reactive Phosphorus Flame Retardant
Authors: Sun Fu Yu , Zhao Gui Zhe , Zhao Pei Hua , Tian Qian Qian , Zhang Mei , Liu Ya Qing
Published: February 2012

An efficient synthesis of the reactive phosphorus flame retardant had been developed based on triazine. The stepwise synthesis of the functionalized compound 7 was presented. The chemical structure of the product was investigated with 1H NMR and elemental analysis while the thermal stability was studied by TG analysis. The reaction mechanism of 7, which was synthesized from the compound 4 and 6, was investigated using the density functional theory (DFT) of quantum chemistry. At the GGA-PW91/DND level, the geometry optimizations of the reactant and the product were performed, which showed that the calculated results was agreed with that of the experiment.
Research on Three-Dimension Sedimentary Facies Model Building of the Reservoir Chang2 Member, Yanchang Formation in Zhifang Area, Erdos Basin
Authors: Qiang Kun Sheng , Wang Jian Min , Tian Xin Wen , Lü Xiu Xiang , Tian Lei
Published: February 2012

Through the Ordos basin sample with Triassic Yanchang formation Chang 2 member sedimentary facies research and analysis, the use of deterministic modeling and the theory of stochastic modeling, using PETREL software, the establishment of a three-dimensional visualization of the study area Chang 2 member geological reservoir facies model, the model and geological interpretation in the whole match, a true reflection of the sedimentary characteristics of the study area, the numerical simulation for the latter part of remaining oil and provide a geological basis. Sand distribution model based on a clear understanding of sand microfacies characteristics distribution in the plane and space, the combination of relations, proved in the study area is mainly sand flat on the NE - SW band distribution, the distributary channel facies under control the trend of the sand body, in the same succession of small rivers within the good level, migration is not swinging, with micro-facies stability.Chang2 member channel development , is the favorable oil and gas accumulation zones.
Determination of Elastic Modulus and Poisson Ratio for Nanoporous Materials
Authors: Han Fue , Chen Chang Qing , Shen Ya Peng
Published: February 2012

Through the finite element method, the elastic modulus and Poisson ratio out of plane of the honeycomb nanoporous materials are obtained. In the end, the values are contrasted with the scale values. Results show that the values are same to the scale values.
Computer Simulation of Transmission Line Model for Landfill Leakage Location
Authors: Chen Ya Yu , Wang Zhen Chong , Nai Chang Xin , Dong Lu
Published: February 2012

Landfill is the main means of solid waste treatment in China at present, and the layers will leak different extent in the laying time. It is essential to locate leakage. The paper raises the conception that the application of transmission line model in the landfill leakage detection, the commonly method of TDR (Time Domain Reflectometry) is introduced, the transmission line model of landfill leakage detection is established, and the formula of a single loophole model is deduced, the result of computer simulation for the transmission line in landfill leakage detection is given. For with the leakage or not, potential distribution is contrasted. From transmit frequency and transmission line spacing for the influence of potential distribution, we use comsol to simulate. The results show that, the transmission line can be an effective method to locate the leakage region in a landfill.
Preparation of Nanoparticles by Crosslinking Folate Conjugated Chitosan with Vanillin and its Characterization
Authors: Zhou Min , Li Pu Wang , Wang Guang , Yang Zi Ming , Peng Zheng , Kong Ling Xue
Published: February 2012

Functionalized chitosan (CS) were widely used as drug delivery system in the chemotherapy of various disease. In this work, folate (FA) was conjugated into chitosan molecular as targeting ligand based on Schiff reaction between –NH2 group of CS and –COOH group of FA. And nanoparticles were made by emulsion method with vanillin novel cross-linking agent. The FA modified CS and its nanoparticles were characterized by Fourier transform spectroscopy (FT-IR), scanning electron microscope (SEM) and Zeta potential. SEM results confirmed the nanoparticles made from FA-CS conjugate were spherical in shape and were about 100 nm in size. Zeta potential analysis revealed that the nanoparticles were negatively charged with charge density of -7.73mV.
GUI Design for Electro-Hydraulic Proportional Controller Based on Qt
Authors: Cheng Da Wei , Jin Xia Jie , Xing Ke Li
Published: February 2012

In order to meet the requirements of electro-hydraulic proportional controller interface in embedded system, a GUI design method based on Qt Embedded is developed in this paper. Furthermore, the vital techniques, including installation, design, are analyzed in detail. This GUI system is employed in the embedded electro-hydraulic proportional controller. It shows the graphical user interface is friendly with stable performance.
Research for Dynamic Characteristics of Electro-Hydraulic Proportional Relief Valve Based on AMESim
Authors: Wang Xian Feng , Xiao Xing Ming , Zhang Xiao Yan
Published: February 2012

The electro-hydraulic proportional relief valve which will be used widely, has better stability and pollution resistance compared with the traditional nozzle flapper and the electro-hydraulic proportional reversing valve in the hoist constant deceleration braking system. The model of the G-π bridge electro-hydraulic proportional relief valve is built in this paper based on the simulation software-AMESim and the characteristic curves of the port pressure are plotted according to different step signals. The influence that the oil elastic modulus exerts to the dynamic characteristics of the valve is also studied in this paper, which provides data supports for the rational design of the valve structure and the hydraulic oil with certain elastic modulus. As the core component of the hoist constant deceleration, the electro-hydraulic proportional relief valve provides the theory basis for the next research of the constant deceleration.
Control System of Automotive Transmission Test Line Based on PLC and HMI
Authors: Peng Gao , Chen Shu Hong , Wu Jun
Published: February 2012

Utomotive Transmission Test Line Is One of Sub-lines of Automotive Transmission Assembly Line Used for Testing the Quality of Assembly. some Automotive Transmission Enterprise Is Taken as Research Content and Application Background. this Paper Puts Forward a Control System of Automotive Transmission Test Line Based on Wincc Flexible and S7-300PLC.Here Contents Including Program Planning, Supervisory System Developing, Control System Programming and Communication Network Configuring Are Shown. by Using RFID Information Collection of the Online Products Is Achieved. Besides, Remote Data Acquisition and Processing Is Carried Out by Using Profibus-DP. the Control System Represents Advantages such as Good Interface, Well-staged Control Program, Satisfactory Stability and High Quality of Automation.
Parametric Modeling and Finite Element Analysis of the Extruder Key Components Based on Pro/E and ANSYS
Authors: Wang Hong Li , Shao Yue
Published: February 2012

The extruder key components consist of extrusion-screw, sleeve and nozzle. Its structure and size decides extrusion effects of the extruder, even to the capability of the whole machine. In this paper, the 3D entity modeling of the extruder key components were established by using the parametric design software of Pro/Engineer, then it was transferred into data that will be used in finite element analysis. The stress analysis was carried out by ANSYS which software of finite element analysis. The results showed that strength of the extrusion-screw, sleeve and nozzle meet the design requirements. Parametric modeling and finite element analysis was the effective way for optimal design of the extruder.
Study on 3D CAD System of Extruder
Authors: Zhang Li Zhen , Lv Chao , Li Jun Tao
Published: February 2012

The extruder is the key device to produce extrusion feed and food. Since different raw materialsi require different structural and technological parameters, the parametric design method must be used when an extruder is designed. The 3D (3-dimensional) software now available is just universal design platform, so the further development must be done based on universal software to realize the automatic design of machines for special purpose. In this paper the further development is carried out and the CAD (Computer Aided Design) system for the 3D parametric design of extruder is developed based on Solidworks. The system is developed with Visual C++, and it can be compatibly added in Solidworks as dynamic linkage library, which makes the modification of extruder more rapid and more correct. The paper introduces every function part in detail, including parameter input , design and calculation, 3D modeling of part, 3D modeling of assembly, engineering drawing. The realization of the automatic 3D modeling adopts the new idea of driven by dimension primarily and driven by program secondarily. The whole system is encapsulated in a menu of Solidworks. After some parameters, such as power and rotational speed, are imported through UI (User Interface), the system will automatically complete the design of extruder. Then 3D models and engineering drawings of parts or assembly can be exported according to the choice of user.
Computer Aided Detection Method of Lung Fissure Based on CT Images
Authors: Liu Yang , Fan Li Nan , Sun Shen Shen
Published: February 2012

CT images of Lung Fissure detection is an important means of centrifuged lung disease. In recent years has emerged many new theories, new methods, but none of those methods can satisfy all symptoms of image accurate testing goal. In summary of domestic and international scholars in recent years related researches on and the detecting lung fissure method classification and discussion, and points out their respective advantages and problems. In this paper, the relevant methods also expounds each detection lung fissure method based on the features of other researchers in lung fissure methods selection on some guidance.
Modelling and Analysis of Capacitive Effects in a High Frequency Coaxial Transformer
Authors: Yang Xiao Guang
Published: February 2012

A new model is proposed for analyzing the capacitive effects in a newly developed high frequency coaxial transformer (HFCT). The proposed model can describe both the electric energy storage and common-mode (CM) electromagnetic interference (EMI) noise behaviors of a transformer, considering the voltage distribution in the HFCT windings. To determine the parameters of the model, a parasitic capacitance network is developed to describe the HFCT’s real winding’s structure, and the distributed parasitic capacitances of the network are evaluated using FEM based on the theory of capacitances in a multi-conductor system. The calculated inter-capacitance of the HFCT is in good agreement with the experimental results.
The Search of Modularized Digital Modeling and Structural Parameter Design Based on 3-D Product Model
Authors: Liang Ge
Published: February 2012

The full 3-D digital model is taken as the basis, and the complex missiles are chosen for the research object. The product structure is studied. The digital modeling of the product and structural parameters technology with the modular design techniques and the key technology will be discussed as well.
Analysis of Force Mechanism and Reinforcement Effect of Leading High Pressure Grouting Ductule Basing on Numerical Simulation
Authors: Lu Hong Jian
Published: February 2012

In order to study the force mechanism and reinforcement effect of high-pressure second grouting method in leading support of soft-fracture wall rock, with the example of Heishiling highway tunnel construction at the shallow depth and crushed zone of the tunnel’s exit, which belongs to Zhangshi highway in Hebei province, by Three-Dimensional Numerical Simulation of GTS (Ground and Tunnel Analysis System), monitoring and surveying method, force mechanism and wall rock convergence were simulated and measured experimentally. The results showed that ductule high-pressure second grouting combined with double side-wall heading excavation method achieved good results, the maximal vault subsidence is 18.5mm, the maximal uplift value of inverted arch is 17.8mm, and the maximum displacement value on both sides of the wall is 15.9mm.
Research on the Control System of Multi-Axis Welding Robot Based on Variable Gain PID
Authors: Wang Ke Kuan , Liu Ming Zhu , Zhao Bing Jie , Long Bin
Published: February 2012

According to the requirement of operational stability and reliability of welding robot, the direct and inverse kinematics models of three-axis linkage welding robot were analyzed. Based on the analysis result, variable gain PID control scheme was designed, and the control system model was built. The control scheme was checked and assessed using MATLAB analysis box. Analysis results show that control system satisfies the demands of welding robot running stability and reliability in ideal status, and the research has laid foundation for the further research.
Design on Electromagnetic Compatibility of Electrical Driving System Controller Based on Computer Control
Authors: Zhang Sheng Yuan , Yang Wen Jie , Zou Tao
Published: February 2012

This article analyses the electromagnetic interfering sources and its transmitting ways inside electric driving system controller and expounds the anti-disturbing methods in designing the electromagnetic compatibility of electric driving system controller. Among that the interfering sources are the rectifiers and inverse transformer in the AC frequency converter and the interference signals from electric network, the transmitting ways of the electromagnetic interfering signals include transmitting in electric wires, radiating and coupling through space, and the anti-disturbing methods have (a) separating interference sources with the system or devices, (b) connecting filters in the output ends of interfering sources and the input ends of the devices easily to be interfered, (c) shielding the interfering sources, (d) grounding correctly and reliably, (e) adding circuit power filters. The experimental results demonstrated that the anti-disturbing methods mentioned above are very effective for the electric driving system controller based on computer control.
A New Nonlinear Control Strategy for DC/AC Inverter
Authors: Mu Kun , Mu Xiao Bin , Bao Xue Yu
Published: February 2012

The mathematical model of Three-phase VoltagePulse Width Modulation (PWM) DC/AC inverter is non-linear, in view of the traditional linear control strategy can not meet the requirements of designing high-performance DC/AC inverter, this paper propose a new nonlinear control strategy for Three-phase Voltage PWM DC/AC inverter called Passivity-based Control. We can alter the inverter model in three-phase abc coordinate to two-phase synchronous rotating dq coordinate for establishing the Euler – Lagrange (EL) energy model for this system, then we also proof this system is strictly passive. We can control the output energy of the system, and we use the approaches of injecting damping and decoupling to improve system performance. Usually, we can use Single Chip Microcomputer or other kinds of computer with this algorithm for our design, this algorithm can be programmed with the computer language, such as C/C++ and assembly language, etc. Simulation results show that passivity-based control method can make this system possess the high-performance of robustness and dynamic.
Motion Simulation and Stress Analysis of a Vehicle Shock Absorber
Authors: Zhou Yu Cun , Cui Shi Hai , He Li Juan , Sun Miao Zhong , Tan Bing Fa
Published: February 2012

The shock absorber plays an important role in the properties of stability and riding comfort of the vehicle. A virtual model of a double cylinder hydraulic vehicle shock absorber is developed for motion simulation and stress analysis by SolidWorks software. The kinematic character of the shock absorber was simulated by using the virtual model. And the stress analysis result showed that the shock absorber had high liability. All the results can also be helpful to design the double cylinder hydraulic vehicle shock absorber.