bluuebunny/crossref_metadata_2025 huggingface dataset:
Research on the Size Measurement of Shaft Parts Based on Image Processing
Authors: Shang Xiao Yan , Wu Ji An , Wang Xing , Nan Liu
Published: February 2012

non-contact measurement of shaft component realizes dynamic measuring ,which bases on image measurement technology.After the image of shaft is obtained,Sobel operator is used for preliminary locating to image edge,on basis of this ,discrete points of image edge are fitted by least square method for achieving edge subpixel location.By precision analysis, size solution method is acquired when the error is minimum;After calibration coefficient k is gained, the part size is correctly calculated. By experiment, it shows that measurement precision is improved effectively and measurement error is less than ±20μm when resolution of CCD camera is 1392×1040 and its pixel size is 4.65μm.
Modeling and Simulation of Tractor and Aircraft Multibody System
Authors: Zhao Ding Xuan , Zhao Ying , Li Ying Jie
Published: February 2012

The dynamics equation of tractor and aircraft multibody system is developed using Lagrange method. Tire model represent by spring and damper is used to analyze ride comfort for tractor and aircraft. In order to achieve effective numerical solution, the dynamics equation is solved by Runge-Kutta method. Typical towing operation is simulated, and the result provided analysis for towing force and ride comfort, also provided validation for the design of tractor.
Novel Customizable Architecture for 3D Visual Simulation Engine Platform
Authors: Zhang Sen , Wang Ting Zhong
Published: February 2012

In order to avoid the flaw including rigid regulations of architecture, strong coupling degree among modules, removal of fault and advanced technology embeding hardly in 3D visual simulation engine, the novel customizable architecture for 3D visual simulation engine platform was proposed. Following simulation theory of the complication system, introduced some simulation models that design standard, expansibility, assembly relation of simulation component resource, development of typical module and component design. Through the models, the rational design strategy of engine was shown clearly. Application developer could customized simulation assembly component flexibly and composed own 3D visual simulation engine generally.
Simulation and Performance Analysis of Symbol Interleaved Serially Concatenated Continuous Phase Modulation
Authors: Wu Xiao Jun , Sun Jin Hua
Published: February 2012

Serially concatenated continuous phase modulation (SCCPM) is a kind of constant envelope concatenated coding and modulation scheme with high power and bandwidth efficiency. SCCPM with symbol interleaver is studied in this paper. Compared with traditional bit-wise interleaving scheme, SCCPM with symbol interleaver can get better performance in convergence threshold but higher error floor. The influence of system parameters, such as outer code, interleaver size, and baseband shaping pulse on the performance of SCCPM is studied through simulation and theoretical analysis. The difference between SCCPM with symbol interleaver and bit interleaver is discussed. Finally we present some design principles for SCCPM with symbol-wise interleaving.
Design and Implement of Calibration Monitored Control System Based on CCP
Authors: Chen Pei Ran , Cen Ming , He Yong Guang , Li Yan Ti
Published: February 2012

CCP is a calibration protocol based on CAN bus. It has many general-purpose features, such as high communication speed and excellent compatibility. This article introduces its basic principle, communication mode, and work mode for ECU calibration, and discusses a design method of Automobile ECU Calibration based on this protocol. The practical application results show that this calibration system can be implemented effectively on ECU of automobile system for on-line calibration，and provide custom-made function aimed at different demand of users. Therefore, it will be applied well in the automotive electronic control system.
Equivalent Fatigue Stress Analysis of the Key Parts of Railway RD2 Axle
Authors: Liang Hong Qin , Zhao Yong Xiang , Wu Ping Bo
Published: February 2012

Nonlinear dynamics model of the C62freight car was established firstly and the random load spectrum acted on the wheelset was obtained by the simulation of the freight car running on a typical line. Taking the cyclic constructive relation of LZ50 axle steel into account in the finite element analysis of the wheelset, the stress time histories of the key parts of the axle in some typical conditions were got. Furthermore, based on the stress spectrum analysis of the hazard sections of the axle, the probabilistic fatigue stress spectrums with given probability and confidence were obtained. Finally, combining with the linear cumulative damage rules, the stress distribution of RD2axle was investigated, which is fundamental for the further prediction of the fatigue life of axle.
Design of Non-Linear Dynamic Inversion UAV with QFT
Authors: Li Jie , Zhang Jie , Xu Zhi Hui
Published: February 2012

Flight control system of UAV (Unmanned Aerial Vehicle) has limitations with non-linear dynamic inversion method. This paper introduces QFT based on non-linear dynamic inversion method, for avoiding model errors during existing non-linear function offset, QFT theory is presented firstly, then UAV model is established using non-linear dynamic inversion method, definituding the range of errors and system performance requirements, flight control system of UAV is designed with QFT, the simulating curves show that system has robustness stability.
Design of Control System for Automatic Glass Duster
Authors: Wei Cai Qiao , Wang Xiao Guang , Guo Hui
Published: February 2012

A control system was designed in order to endble the glass duster to cooperate harmoniously.The system consisted of PLC,touch screen,frequency converter,moter and other components.The rotary speed of motor was adjusted by the frequency converter to keep dusting powder amounts constance. The static electricity technology was used to increase adsorption of the powder . The PID control method was proposed to meet the special control request of the powder box temperature. The test indicated that the dusting amounts was between 0.4-1.6 grams per square metre. About 85% of powder could adsorb on glass,system function and accuracy could meet the needs of the safe storage and transportation completely.
Energy Absorption Configuration of Crashworthy Metro Train
Authors: Wang Wen Bin , Ren Li Hui , Zhou He Chao , Hecht Markus
Published: February 2012

In this paper, a simulation method based on joining non-linear finite element and multi-body dynamics is developed to solve the energy configuration of crashworthy metro train. The relationships of non-linear springs which describe characters of forces-deformation for energy absorption during crash event are obtained by using non-linear Finite Element Analysis (FEA) techniques. Then they are used in simulation for collision of two metro train sets with multi-body dynamics. Compare to the different energy absorption configuration, the results of impact force, deformation, velocity and acceleration are analyzed to assess the passive safety of whole train set. The results indicate that the joining simulation strategy is feasible and effective. It can be used to improve the metro train crashworthiness design by optimizing the energy absorption configuration.
Design of Power Quality Analyzer Based on Labwindows/CVI
Authors: Yang Fan , Zhao Hui
Published: February 2012

The traditional quality analysis system has many disadvantages such as the bulky, expensive, fixed functional modules, poor extension, monotonous display etc. Combined with the virtual instrument technology, the paper propose design ideas of instrument Virtual power quality analysis based on LabWindows/CVI, including design of hardware circuit and software, obtain harmonic amplitude and phase by making use of fast Fourier transform. The analyzer has high accuracy, stable, and good anti-jamming performance, meet the electric power system testing requirements.
Research on Carbon-Free Al-Al2O3 Composite Sliding Gate Performance
Authors: Li Jin Bao , Li Yong , Zhang Jun Jie , Liu Ya Qin , Hong Shan Shan
Published: February 2012

The Al-Al2O3 specimens of the carbon-free sliding gate are made from sintered corundum, white fused corundum, activated alumina powder and aluminum. The Al contents of the metal Al-Al2O3 composite sliding gate are 3%, 6%, 9%, 12% and 15% respectively. The specimens are treated with three different processes (200°C drying, Nitriding and CO atmosphere). The results show that, the specimen of Nitriding has the best performance. Especially, the specimen, whose Al content is 9% and is treated with Nitriding, has relative lower apparent porosity, higher cold crushing strength and hot modulus of rupture, which makes it posses the superior combination property.
The Research of Improved Scheme for Asynchronous Motor Direct Torque Control
Authors: Chen Di , Hou Rui Juan , Li Jie , Tao Jin Niu
Published: February 2012

This paper proposed a kind of new control method for resolving the problem of the Direct Torque Control (DTC)'s greater torque pulsation problem at low speed, this method is based on Space Vector Pulse Width Modulation (SVPWM). SVPWM is a kind of excellent Pulse Width Modulation (PWM) scheme. It can not only improve the inverter DC voltage utilization, reduce harmonic losses, restrain torque pulsation, also easily generate high-precision real-time waveform by the high-speed digital signal processor. The simulation results of this system by Matlab/Simulink indicate that the space vector PWM direct torque control can efficiently reduce the pulse of motor torque and flux linkage.
The Applications of Molecularly Imprinted Polymer in Immunoassay, Biosensor and Enzyme Mimic Catalyst-A Critical Review
Authors: Zhang Li Min , Zhang Xin , Xu Zhi Xiang
Published: February 2012

Molecularly imprinted polymer with high selectivity and stability has been reported in many applications. In this paper, the recent states, advantages and current problems of its applications in biological samples, such as immunoassay type protocols, biosensors and mimic enzyme catalyst were summarized. The challenges of biomimetic immunosorbent assays and enzyme mimics in catalytic reaction were emphasized specially. Some promising solutions to overcome the existed problems were put forward.
Compensation of Ship Hull Deformation in Transfer Alignment
Authors: Zheng Xin , Wang Bo , Deng Zhi Hong , Fu Meng Yin
Published: February 2012

By building the velocity plus attitude matching mode for ship transfer alignment, we analyze the impact of different hull deformation angles to the performance of transfer alignment and give simulation results. The theoretical accuracy of GPS attitude determination network applied for ship hull deformation monitoring is proposed. According to the simulation results, the performance of transfer alignment after hull deformation compensation by the monitoring network is effectively improved compared to the one without compensation.
Velocity-Current Double Closed-Loop Control Model and Simulation of BLDCM in Pure Electric Vehicle Applications
Authors: Zhang Chang Li , Zhang Jin Jin , Liu Hai Bo
Published: February 2012

Traditional control models of BLDCM, in which only the internal parameters of motors are considered, have some shortcoming in smoothing the vehicle velocity. To achieve a better controlling capability, a velocity-current double closed-loop control system model for BLDCM of PEV is constructed on Matlab, in which the inner current loop is for quickly adjusting BLDCM’s actions, the outer velocity loop is for an optimized control of PEV’s speed. The results of a simulating experiment show that the new model has a good performance and a strong anti-interfere ability. Therefore, this model is applicable for designing and debugging of BLDCM in PEV applications.
Research on Random Drift Modeling and Error Compensation Method for MEMS Gyroscope
Authors: Hao Yan Ling , Yang Jun Wei , Chen Liang , Hao Jin Hui
Published: February 2012

This paper presents modeling random drift by traditional time series method. In the modeling process, the real time average algorithm is proposed which can extract the constant drift of the MEMS gyroscope effectively to get random drift, and a modified recursive extended least squares (RELS) method for parameter estimation of the autoregressive moving average models (ARMA) is presented. The modified RELS algorithm consists of two-stage RLS algorithm which can on line be implemented, and has the fast convergence rate. After modeling, the corresponding Kalman filter is designed to make compensation for gyroscope random drift. The compensation results for the practical testing data of the MEMS gyroscope show that the model established can reflect the gyroscope random drift tendency with reasonable accuracy, and the gyroscope random drift can be effectively reduced by the filtering method presented.
Numerical Solution to Reynolds Equation for Micro Gas Journal Bearings
Authors: Yang Qin , Zhang Hai Jun
Published: February 2012

Reynolds equation for gas bearings is a nonlinear partial differential one and its analytical solution usually is difficult to obtain. Therefore numerical method is an effective means to investigate the performance of gas-lubricated journal bearings. In this paper, firstly the modified Reynolds equation for micro gas journal bearings based on Burgdorfer’s first order slip boundary condition is put forward. The finite difference method (FDM) is employed to solve the modified Reynolds equation to obtain the pressure distribution for micro gas journal bearings under different reference Knudsen numbers. Numerical analysis shows that the pressure profiles for micro gas journal bearings decrease obviously with the reference Knudsen number increasing.
Which Rust Deposition Model Should Be Used in Predicting Concrete Cover Cracking due to Reinforcement Corrosion?
Authors: Zou Roger , Collins Frank
Published: February 2012

The critical amount of corroded steel that causes concrete cover cracking can be readily calculated based on thick-walled cylinder theory. However, the results may vary significantly depending on how the rust deposition is considered. There are several rust deposition hypothesis proposed in the literature for modelling concrete cover cracking of RC structures due to reinforcement corrosion. Among them, three are considered representative ones and have been widely cited in the literature. They are: (i) assumes a certain amount of rust product carried away from the rust layer and deposited within the open cracks proposed by Pantazopoulou and Papoulia; (ii) assumes all of the rust products build up around the bar and all of them are responsible for the expansive pressure proposed by Bazant; (iii) assumes certain amount of rust products deposited into a porous zone around the bar/concrete interface proposed by Liu and Weyers. In this paper, all three rust deposition hypotheses were examined for the critical amount of corrosion to induce cover cracking. When compared to the test data available from the literature, it showed that the porous zone model proposed by Liu and Weyers gives the best predictions. Thus it may be concluded that assuming a porous zone around the steel/concrete interface would be reasonable and may be adopted in developing concrete cover cracking predictive model.
Ductile Fracture Criteria Calibration and their Application
Authors: Hulka Jiri , Kubik Petr , Petruška Jindrich
Published: February 2012

This paper deals with ductile fracture criteria calibration process. Choice of calibration tests and their relation to corresponding type of failure is discussed. Further, some of the calibrated criteria are used to simulation of selected technological processes and results are compared with experiments.
Coordinated Control of Speed during Driving Mode Switches for Parallel Hybrid Electric Vehicles
Authors: Zang Huai Gang , Niu Yan Xia , Han Yan Long
Published: February 2012

This paper studies the coordinated control of dynamic process of mode-switches for parallel hybrid electric vehicles (PHEV) during work. PID and fuzzy control algorithms are used to regulate the process of speed coordination in terms of look-up tables obtained from FC2000 testing system. Simulation results illustrate the PID controller has a better response for the dynamic coordinated control of speed in the small range variation of working conditions, so as to ensure the speed stability.
Stability and Bifurcation Analysis of a Stage-Structured SIR Model with Time Delays
Authors: Yan Shan Wen , Zhang Li
Published: February 2012

In this paper, we considered a SIR infectious disease model with two stages, immature and mature, with the time to maturity represented by a constant time delay. Positivity and boundness of solutions and sufficient conditions of the stability of equilibria are obtained.
The Preparation of Microcellular Foam PP Reflective Film
Authors: Shi Zhen Jiang , Yang Sheng Lin , Jin Jun Hong , Li Guang
Published: February 2012

This work was aimed at manufacturing the microcellular foam polypropylene for the applications of reflective film with chemical foaming agent or supercritical carbon dioxide. The effects of processing conditions such as the composition of foaming agent during chemical process, the foaming temperature and saturation pressure in physical process on the microcellular structures and the reflectivity as well as the volume expansion ratio were investigated.
Vibration Performance Optimization of the Semi-Active Suspension with Fuzzy Control Method
Authors: Zhi Jin Ning , Yang Jian Wei , Dong Jun Zhe
Published: February 2012

In order to improve the dynamic performance of five-axis heavy vehicle, a variable universe fuzzy control method is proposed to optimize suspension parameters. Five-axis multi-body dynamic model including electro-hydraulic proportional valve was firstly established in software ADAMS/Car. The variable universe fuzzy controller based on fuzzy neural network was also designed in MATLAB/Simulink, and then the co-simulation was conducted. The dynamic characteristics of five-axis heavy vehicle are studied to verify the effect of suspension parameters optimized by variable universe fuzzy control method in the A, B and C-level random pavement and different speed conditions. Simulation results show that compared with passive suspension, the real-time optimization of variable fuzzy control based on FNN can improve the ride comfort and the dynamic load of tire. Under different driving conditions, ride comfort can be increased by about 25%-30%, and the dynamic load of tire generally decreases by 25%-35%. Therefore this method has a certain practicability and effectiveness.
Simulation and Optimization of Power Train System of Light-Duty Passager Car Based on CRUISE
Authors: Zhang De Sheng , Lv Song Tao , Sun Yuan Tao , Wang Ying Pu
Published: February 2012

By the case of Modeling and simulating of a special 1.3L manual transmission FF light-duty passages car is used by means of CRUISE software.Modeling and simulating with professional CRUISE software can increase efficiency obviously. Using traditinonal theory formulation for calculation is very complicated in the research of power train system and optimization of parameter. and this process must consume a great deal of time. In this paper ,choosing the assembly of four kinds of gearboxes & four kinds of single ratio transmission according to the requirement of design , And power performance and fuel consumption is simulated by task of design. After all the simulation results are analyzed , we choose assembly that one is better than others at balance of the performance of complete vehicle,and than prove that result of simulation is correct by comparing with the chassis performance experiment data of vehicle , and optimize the transmission ratio of vehicle powertrain. At the end,define the value of important parameter that is important to gearbox and single ratio transmision .So then simulation results may be used as reference for automobile development.
Working Pressure Effect on the Microstructure and Electric Resistivity of SiC Films Produced by MF Magnetron Sputtering
Authors: Li Yang Yang , Hao Jun Jie , Wang Rui Xin , Yang Fang
Published: February 2012

SiC films were prepared by mid-frequency (MF) magnetron sputtering with sintering SiC target on monocrystalline Si(100) substrate. SEM and XRD were used to investigate the surface morphology and microstructure of SiC films changing with working pressure. Results show that the resistivity value of 4H-SiC is larger than that of 3C-SiC and when working pressure is 0.3Pa, the film is mainly based on 3C-SiC, when pressure is 0.6Pa, the film is mainly based on 4H-SiC.
Weft Weave Texture Feature Recognition Based on Power Spectrum
Authors: Ma Yun Fang
Published: February 2012

In this thesis, we apply Power Spectrum in fabric weave recognition, use power spectrum to analyze fabric image by image lightness features at definite illumination, and then extract fabric weave texture features. We can obtain fabric weave image power spectrum curve by Fourier Transform. From the curve, we can extract direction information of fabric weave, and get fabric weft density, then calculate weft Tex, weft number, weft repeats. Experiments prove the method practical and useful for fabric weave computer automatic analysis.
Application of Wireless Communication in Road Intensity Detecting System
Authors: Gao Xiang Ming
Published: February 2012

Road intensity is an important performance parameter and evaluation index of concrete road quality. During the construction of road infrastructure, the implementation of road intensity testing has become very necessary. So as to meet the needs of remote testing, wireless communication was adopted based on CC2430. LabVIEW was used as the system’s development platform of upper computer. Through the signal collected by the pressure sensor combined with signal conditioning circuits, functions of various parts were designed to analyze the relevant parameters of the road intensity. The related data of concrete road was measured and sent to upper computer through wireless communication module, at the same time, the statistics data was analyzed with regression analysis by virtual instrument software. The functional relations between compressive strength and tensile strength of the road was found and thus it provided an important basis for the quality of road management and road maintenance.
The Research on Concrete Mix Design of Tailings Sand and Gravel
Authors: Ma Li Jie , Zhang Lin , Zhang Jin Yu
Published: February 2012

The technology of concrete of using tailings sand and gravel instead of natural sand and gravel belongs to Inorganic nonmetallic materials science, and the direction of the popularization and application is the field of civil construction .Using the iron tailings in the north of Tangshan as research sample,Besides it also been researched that mix design of concrete with iron ore tail and tail ore instead of natural sand, As a result the corresponding design principles have put forward.
Study on Milling Process Based on Finite Element Analysis
Authors: Zhang Yong Liang , Wang Rui Jie , Liu Hong Bin , Du Mao Hua , Xu Xiao Dong
Published: February 2012

The influence of negative chamfers of PCBN milling cutters on cutting process of high speed cutting is studied based on finite element analysis. The milling speed, axial cutting depth and feed speed are all set fixed, while the negative chamfer angle varies. Cutting tool stress, deformation force, and cutting temperature are obtained for cutting process under different negative chamfering Angle,thus providing basis for the selection of tool parameters in practical production.
Early Pleistocene Variability of SST Record by Foraminifera Shell Mg/Ca Ratio at IODP Site U1313,North Atlantic
Authors: Guo Zhi Yong , Zhai Qiu Min , Dou Tian Cai , Qin Sai Sai
Published: February 2012

In this paper, we measured Mg/Ca ratio in planktonic foraminifera shell of Globigerinoides ruber (white) from early Pleistocene (2414.2~2253.77ka) North Atlantic deep sea sediment drilled at Site U1313, IODP Expedition 306, and tested 6 transform functions that used to reconstruct sea surface temperature (SST) with foraminifera shell Mg/Ca ratio, the result showed that the theoretical equation of Elderfield and Ganssen (2000) and the equation of Anand (2003) both are appropriate, but there is big difference between their results, so we use their average value as the final results to reflect SST in the North Atlantic area in early Pleistocene. The fluctuation of the SST we reconstructed and that of the benthic foraminifera oxygen isotopic are basically same, but in the stages of MIS 87 to 95, there exist 2.71ka to 19.54ka error, probably it was caused by the difference of the response to changes in water temperature between the planktonic foraminifera and the benthic foraminifera.
Dynamic Behavior of Sandwich Beams with Different Cores
Authors: Wu Ying , Jia Han Bin , Zhang Dong Xu , Tian Lei , Lü Yan Jun
Published: February 2012

The nonlinear dynamic behaviour of sandwich beams with different cores under transverse cycling loads is investigated in this paper. Based on Euler-Bernoulli beam theory, the second-order nonlinear ordinary differential equation of the sandwich beams with different cores is established by applying Hamilton’s principle and Galerkin method. The effects of the cores of metal foam and lightweight wood and porous metal fiber as well as pyramid lattice structure on the dynamic behaviour are studied through numerical simulations. It is shown that the dynamic behaviour of sandwich beams is not solely determined by and
Security Mechanisms Analysis for ZigBee Standard Based on AES-CCM*
Authors: Yang Bin , Fu Ren Yi , Diao Jian Zhong , Liu Hui Rong
Published: February 2012

The security of wireless sensor networks is very important. ZigBee technology offers an optional security system to ensure the wireless sensor network runs safely and reliably. This article analysis of the ZigBee security mechanisms, key management, encryption algorithm and its data integrity mechanism, ZigBee security based on the CCM* mode of the AES-128, has several security scheme, which is a relatively reliable wireless sensor network standard.
Research on Performance Testing and Analysis System about Counter-Rotating Fan Based on LabVIEW
Authors: Ai Zi Jian , Wu Long , Jin Fang Wei , Chen Liao Yuan
Published: February 2012

The testing methods of various performance parameters of Counter-rotating Fan had been researched. The principle and operation method of impeller revs calculation by measuring the frequency of pressure around the tip of the blades was elaborated. The performance testing and analysis system about Counter-rotating Fan was developed, including a hardware platform and a software platform which could be improved by the users based on actual requirement. The experiments showed that this system could achieve multi-parameter collecting and real-time display, performance automatic testing and analysis quickly and accurately, saving the data and results to a word test report.
Research on Novel Self-Spinning High Speed On/Off Valve Based on Fuzzy-Logic Parameter Self-Tuning PID Controller
Authors: Chen Jian , Shu Jian Ping , Li Mian , Zhou Qi , Su Zhu Ming
Published: February 2012

The flow rate of a novel self-spinning high speed hydraulic on/off valve is regulated by changing the relative axial position (the duty cycle) of the valve spool to the nozzles located on the valve body through driving a gerotor pump using brushless direct current motor. The closed loop axial position control system of the valve spool with feedback of the axial displacement of the valve spool has shorter response time, and not more ripple of output pressure than corresponding open loop control system. A fuzzy logic parameter self-tuning PID controller is investigated to overcome nonlinearity of the control system. The simulation results show that the overshoot is decreased greatly than conventional PID controller.
Distinction of Different Heat-Treated Skim Milk by RP-HPLC of their Whey Proteins
Authors: Zhu Xin Xin , Yu Jing Hua , Zhao Zheng , Liu Xiao Hui , Li Qiu Qin
Published: February 2012

RP-HPLC (reversed-phase high-performance liquid chromatographic) was used for simultaneous qualitative and quantitative analysis of whey proteins of laboratory heat-treated bovine milk. Four whey proteins, including BSA, α-La, β-LgB and β-LgA, could be distinctively separated. The results showed that stability of whey proteins in heated milk varied greatly with different heating temperature. The BSA exhibited the worst heat-tolerance: about all of it was lost after 85°C for 5min and in contrast the α-La was the strongest. That β-LgB and β-LgA have similar trends: the denaturation of β-LgB and β-LgA was both no more than 10% as the skim milk was heated at 55°C or 65°C, but all of them was lost after heated to 95°C for 5min.
Mobile Robot Tracking Control Based on Lyapunov Method
Authors: Wang Qi Zhi , Wang Xiao Xia
Published: February 2012

This paper presents adaptive control rules, in the dynamics level, for the nonholonomic mobile robots. Adaptive controls are derived for mobile robots, using Lyapunov stability technique, for tracking a reference trajectory and stability to a fixed posture. The presented control law can render system asymptotically stabilization at a desired target. The simulation shows it has good position tracking performance. This template explains and demonstrates how to prepare your camera-ready paper for Trans Tech Publications. The best is to read these instructions and follow the outline of this text.
Study on the Structure and Factors of TOT Applied in Water Conservancy and Hydropower Project
Authors: Ma Li , Wang Song Jiang
Published: February 2012

TOT project financing structure includes Renshi structure Wushi structure and Lishi structure [1]. Based on the qualitative analysis separately of the three structures, the article built the factor analysis framework for the three structures by the method of fuzzy entropy. The article will lay the foundation for further research on integration of the three structures.
Estimation of Wheat Chlorophyll Content Based on HJ Satellite CCD
Authors: Jin Xiu Liang , Tan Chang Wei , Wang Jun Chan , Tong Lu , Yang Fen Tuan , Zhu Xin Kai , Guo Wen Shan
Published: February 2012

Chlorophyll content is an important indicator for assessing crop health and predicting crop yield. It is possible that chlorophyll content (CC) was quickly and non-destructively estimated by remote sensing. The objective of the experiment was to develop precision agricultural practices for predicting CC of wheat. In this study, we compared some spectral parameters (SPs) and CC with the determination coefficient (R2), and combined these SPs by stepwise regression methods. The results indicated that the 1.45SIPI-1.05PSRI, the R2 value was 0.6589 and corresponding the root mean square error (RMSE) was 1.463, and it can be used to improve the prediction accuracy of CC.
FTIR/ATR Spectroscopy with Stability for Determination of HGB in Human Whole Blood
Authors: Pan Tao , Huang Wen Jie , Yin Hao
Published: February 2012

Fourier transform infrared spectroscopy (FTIR) and attenuated total reflection (ATR) combined with partial least-squares (PLS) and Savitzky-Golay (SG) smoothing were successfully applied for rapid no-reagent determination of hemoglobin (HGB) in human whole blood. The optimal SG smoothing parameters OD, DP, NSP and PLS factor were 1, 2, 49 and 14, respectively. The modeling effect M-SEPAve, M-RP,Ave, M-SEPStd, and M-RP,Std were 6.73g/L, 0.850, 0.306g/L, and 0.015, respectively. The validation effect V-SEP and V-RP were 6.83g/L and 0.864, respectively. The method provided a reliable model with stability for clinic application of FTIR/ATR.
False Color Composite System of Multi-Spectral RS Images Based on IDL
Authors: Yin Ting , Zhang Wen Tao , Xiong Xian Ming
Published: February 2012

Several methods of the choice in assembled spectral and color composite in the false color composite of multi-spectral RS images are discussed. The research indicates that using the OIF method to carry on the band choice, unifying the easy and feasible RGB false colored synthesis and carrying on the method of image linear extension can realize the false color composite of multi-spectral RS images effectively, and the obtaining false color image has rich information and distinctive visual effects.
Fault Diagnosis Method Based on Embedded Acquisition Equipment and SVM
Authors: She Ming Hong , Yang Hong Bing , She Ming Ying
Published: February 2012

Fault diagnosis method based on embedded acquisition equipment and SVM is proposed in the paper.The function of the module mainly includes data acquisition, data processing and data storage.SVM is trained by the features and the five states of rolling bearing. The structure of diagnostic model by SVM is defined as 5 input nodes and 5 output nodes,among which 5 input nodes are the features including peak factor,waveform factor,impulse factor,margin factor and kurtosis factor and 5 output nodes are the five states of rolling bearing include normal state, housing washer failure, retainer failure, rolling element failure and inner ring failure.The experimental results show that the diagnostic performance of SVM is effective.
Experimental Investigation on Water Miscible Rolling Lubricant KD1
Authors: Peng Xing Dong
Published: February 2012

A contrast test was done about the service performance of using emulsion I and water miscible rolling lubricant KD1 with polyethylene glycol 2000. The test results were given to have analysed them in lubrication, softening, resistance of putrefy, rust protection and so on. And water miscible rolling lubricant KD1 is notable in lubrication, annealing, resistance of putrefy, rust protection. The results may offer the reference for further optimization on water miscible rolling lubricant.
Finite Element Modeling of the Temperature Field during Grinding Processes
Authors: Yong Sun , Yang Yong Qing
Published: February 2012

By using three dimensions finite element method, the temperature distribution has been simulated in grinding of titanium alloy with SiC wheel. The effects of wheel speed, workpiece speed and tangential grinding force on the grinding temperature field were investigated. The results show that the grinding temperature decreases with the increasing of the workpiece speed, and increases with the increasing of the grinding depth and wheel speed. The obtained results can provide a theory reference for the design and selective of machining parameters during grinding titanium alloy.
Fabrication of Microfluidic Chip and Test of a Hydro-Focusing Based on Sheath Flow
Authors: Yang Rui Xia , Xin Chen , Gao Peng , Yang Fan
Published: February 2012

Silicon etching is an essential process step for the fabrication of micro-electro-mechanical systems (MEMS). However, the rough edge of the silicon etching technology has some resistance to microspheres. This study presents fabrication process of the SU-8 photoresists mold which provides sharp edges and smooth sidewalls of the channel and details the RIE bonding of PDMS and glass substrate to realize the fabrication of microfluidic chips. This paper also investigates the hydrodynamic focusing and microsphere single-pass based on sheath flow with the aid of the plunger piston, which is important to the further combination of the microfluidic chip and the flow cytometry.
Field Determination of Surrounding Rock Strength under TBM Construction in Zhongtianshan Tunnel
Authors: Wang Yu Suo , Wu Zheng Qun , Wang Ming Nian , Chen Hao
Published: February 2012

Rock strength is a key factor in the tunneling efficiency of TBM construction. An issue needing special attention on the work site is how to determine rapidly and accurately the strength of the surrounding rock which makes a crucial reference for the choice of TBM tunneling parameters and corresponding support measures. In the study conducted on the TBM construction site of Zhongtianshan Tunnel, point load test (PLT) of rocks is adopted to measure the rock strength and the data is compared with those of the uniaxial compressive strength (UCS). Finally, the correlation between the two is revealed through regression analysis method.
Flow Field Numerical Simulation of Diesel Engine Working Process
Authors: Dong Zhi Feng , Song Yin , Gu Yong Zheng , Fu Wei
Published: February 2012

The spatial fluid model in diesel engine was built, and multiphase flow transient numerical simulation of working process of diesel engine was done based on computational fluid dynamics. The visualized result of simulation shows the distribution of flow field, press and particle trajectory which can hardly tested direct under the actual working condition. Swirl formed during the intake process and accompanied the whole working process of diesel engine. Keywords: Diesel engine; Numerical simulation; Flow field; Particle trajectory
Graphene Based Transparent Conductive Electrode
Authors: Wang Ya Nan , Gu Peng Fei , Cao Jia Jia , Lv Tian Quan , Zhang Tie Qiang , Wang Yi Ding , Zhang Yu
Published: February 2012

As indium tin oxide (ITO) can not meet the demands of many devices due to its fragility, graphene seems to be a good alternative for transparent conductor purpose. Here we employ two methods to prepare graphene oxide films, and then process them with hydroiodic acid (HI) for reduction, aiming to get an optimized scheme and higher film quality. Finally the reduced graphene oxide films with transmittance of 70~80% at 550nm show sheet resistance of <10kΩ, which are good enough for transparent conductor uses. This study portends a promising future in this field.
How Does the Stable Industry-University-Institute Alliance Promotes the Performance of the Inter-Organizational Knowledge Creation
Authors: Liu Ding Hao
Published: February 2012

The article analyzes how the stability of the Industry-University-Institute Alliance (IUIA) directly and indirectly promotes the performance of the IUIA’s inter-organizational knowledge creation. The stable Industry-University-Institute Alliance directly promotes the inter-organizational knowledge creation performance by reducing knowledge creation period, reducing knowledge creation risk, reducing knowledge creation cost, improving the quality of new knowledge and creating more knowledge creation chances. The stable Industry-University-Institute Alliance indirectly promotes the inter-organizational knowledge creation performance by promoting inter-organizational knowledge sharing.
Heterogeneities Measurements of Crack Tip Deformation Fields in Random Short Spruce/PP Composites
Authors: Shen Min , Yuan Hai Tao , Liang Dong Chao , Liu Yang
Published: February 2012

The random spruce short fiber reinforced polypropylene composites is a type of thermoplastic bio-composites. It is considered as homogeneous, isotropic in macro-scale of its specimen, in fiber scale about 500μm, the composite material appears heterogeneity, anisotropy due to the influence of microstructures of random short fibers. The heterogeneous deformations near the crack tip of the compact tension (CT) specimen which made from spruce/PP composites were measured by means of the digital image correlation method (DICM) with high resolutions digital image. The crack tip fields of heterogeneous displacement and strain for spruce/PP composites with fiber volume content 49% were obtained. The effects of random fiber microstructures on macroscopic deformations were discussed.
3D Numerical Simulation of Hydraulics in an Oxidation Ditch
Authors: Lv B. , Wei W.L. , Liu Y.L.
Published: February 2012

A numerical simulation study of the hydrodynamics of an oxidation ditch is presented. The numerical method is based on a pressure-correction algorithm of the SIMPLE-type. A multigrid technique based on the full approximation storage (FAS) scheme is employed to accelerate the numerical convergence, while as a turbulence model the RNG κ-ε model with wall functions is used. The numerical results for velocity in the oxidation ditch are obtained．
Micro-End-Milling Wear Automatic Inspection System Based on Effective Corner Detection Method
Authors: Liang Yu Teng , Chiou Yih Chih
Published: February 2012

The objective of this study is to measure flank wear of dry milling 6061 aluminum alloy of different PVD (Physical Vapour Deposition) multilayer coatings (including TiN, TiCN, and TiAlN) single edge rhombus micro-end-milling tools. All of the experiments were designed using the Taguchi method in order to obtain robust results. In order to realize the level of importance of each machining parameter, the L9(34) orthogonal array, analysis of variance (ANOVA), and signal-to-noise (S/N) ratio were determined. The tool wear images are captured using a machine vision system incorporated with an effective corner detection algorithm. During the milling test, we fixed spindle speed at 6000 rpm and feed rate at 0.0125 mm/rev to investigate the correlation between side clearance angle and coating materials. The experimental results show that TiCN-coating mills generate minimum flank wear and longest tool life.
Method to Aid Modules Innovation by Patent Knowledge
Authors: Lin Wen Guang , Hou Liang , Lai Rong Shen , Wu Yong Ming , Huang Wei
Published: February 2012

According to the innovation of specific module during the process of product platform in innovation and evolution, a method of using patent knowledge for aiding modules innovation based on axiomatic design and TRIZ was put forward. Firstly, we design the model of innovative design of module based on patent. On this basis, we construct the process of patent circumvent based on axiomatic design and TRIZ, and the conceptual design method based on patent knowledge of same field. Finally, application of the method was illustrated by example to verify the effectiveness.
Lead Isotope Geochemistry of the Jilongshan Skarn-Host Au-Cu Deposit, Hubei Province, China
Authors: Jia Bao Jian , Li Sheng Rong , Pang A Juan , Yang Cheng Dong , Yan Yu Tong
Published: February 2012

Jilongshan Au-Cu deposit is a typical skarn deposit in the southeastern Hubei metallographic province of the Middle-Lower Yangtze River Fe-Cu metallogenic belt. But little study of ore-forming material source has been made in Jilongshan Au-Cu deposit. Therefore, we discussed the ore-forming material source by analyzing 15 lead geochemistry samples collected in Jilongshan deposit. The ranges of the Pb isotopic compositions are from 17.358 to 18.589 for 206Pb/204Pb, 15.414 to 15.745 for 207Pb/204Pb and 37.956 to 39.094 for 208Pb/204Pb, which are anomalous and their single-stage model ages cannot be used as a criterion for metallogenic epoch. However, the distributing characteristics of the single-stage model ages suggest that the ore Pb have mixing sources. The linear distribution of Pb isotope in tectonic model diagram suggests that the consistent relation of granodiorite porphyry, skarn, marble and ore, which is also a good proof that the ore-forming materials are partly from magma.
Green Synthesis of Semi-IPN Hydrogel-Silver Nanocomposites by a Biotemplate Redox Technique at Room Temperature
Authors: Wu Wen , Wang Dong Sheng
Published: February 2012

Semi-IPN hydrogels in which silk sericin (SS) chains were physically dispersed throughout dextran (Dex) gel networks were synthesized. Highly stable distributed silver nanoparticles have been prepared using these semi-IPN hydrogels as a carrier via in situ reduction of silver nitrate without the addition of any reducing agent. The resultant semi-IPN hydrogel-silver nanocomposites were characterized by X-ray diffraction (XRD). And the swelling behavior of the hydrogles was also studied.
MicroBlaze-Based Digital Controller for Switched Reluctance Motor Research and Implementation
Authors: Zheng Yun Hong
Published: February 2012

The switched reluctance motor digital controller design, which took Xilinx's FPGA chip soft-core MicroBlaze as the core and applied in the six-phase 12/10 switched reluctance motor, was introduced in this study. C language was used in MicroBlaze soft-core digital controller, and Verilog HDL language was used in logic design. logic synthesis mapped to both FPGA hardware circuits, and ultimately downloaded to the FPGA chip, real-time control of the motor. Experimental results show that the digital controller designed to meet the real-time switched reluctance motor, the control accuracy requirements.
Local Fatigue Properties of Al-Zn-Mg Alloy Welded Joint
Authors: Zhang Liang , Liu Xue Song , Wang Lin Sen , Ma Zi Qi , Fang Hong Yuan
Published: February 2012

Local tensile properties and fatigue properties of Al-Zn-Mg alloy welded joint were investigated. Experiment results show that A7N01 aluminium alloy welded joint is highly inhomogenous both in microstructure and mechanical performances. Ultimate tensile strength and yield strength of base metal are superior compared to HAZ and weld metal. U-shape notched specimens were used in fatigue tests to study local fatigue properties of the joint. Fatigue tests results demonstrate that the difference of local fatigue life is conspicuous in the three regions. The difference of yield strength is believed to result from the diversity of fatigue life for each region in A7N01 aluminium alloy welded joint.
Mean Shift Segmentation Algorithm Based on Hybridized Bacterial Chemotaxis
Authors: Li Yan Ling , Li Gang
Published: February 2012

Mean shift, like other gradient ascent optimization methods, is susceptible to local maximum/minimum, and hence often fails to find the desired global maximum/minimum. For this reason, mean shift segmentation algorithm based on hybridized bacterial chemotaxis (HBC) is proposed in this paper. In HBC, particle swarm operation algorithm(PSO) is introduced before bacterial chemotaxis(BC) works. And PSO is firstly introduced to execute the global search, and then stochastic local search works by BC. Meanwhile, elitism preservation is used in the paper in order to improve the efficiency of the new algorithm. After mean shift vector is optimized using HBC algorithm, the optimal mean shift vector is updated using mean shift procedure. Experimental results show that new algorithm not only has higher convergence speed, but also can achieve more robust segmentation results.
Manufacture of Porous FeAl Intermetallics Produced by Mechanical Alloying and Sintering
Authors: He Yuan Zhang , Liu Jing Lei , Xu Hong , Li Da Wei , Ye Xian Yong
Published: February 2012

Porous FeAl intermetallics were produced by high-energy ball milled Fe-Al binary composite powders followed by sintering. The microstructure evolution of milled Fe-Al composite powders during high-energy milling processing were observed and analyzed using SEM and XRD. FeAl intermetallics was synthesized by sintering at 1200°C for 4h with a pre-sintering at 620°C. The microstructure of the sinters was also investigated. XRD results and SEM images showed that milling time and sintering temperature accelerated the formation of FeAl intermetallics. The microstructure of the milled sinter apparently improved the properties of FeAl intermetallics.
Logistics Distribution Vehicle Routing Problem with Time Windows
Authors: Chen Ai Ling
Published: February 2012

Vehicle routing optimization problem is one of the major research topics in logistics distribution field. Suitable vehicle routing selection is vital to reduce the logistics cost. The paper presents a hybrid optimization method to solve the vehicle routing problem with time windows. In the hybrid optimization method, discrete particle swarm optimization algorithm is used to assign the customers on routes and simulated annealing (SA) algorithm to avoid becoming trapped in local optimum. The simulation results have shown that the proposed method is feasible and effective for the vehicle routing problem with time windows.