bluuebunny/crossref_metadata_2025 huggingface dataset:
A 3G Video Phone Solution for Reducing the Delay of Video Data
Authors: Shang Dan , Gao Yong Qing , Ping Yu Cai
Published: January 2012

This paper analyzes there are some limitations of video data sending for current 3G video phone. A 3G video phone solution for reducing the delay of video data is proposed. The solution proposed in this work mainly consists of software components, according to which hardware needs to be selected. It also gives the video phone terminal structure, block diagram for H.324M video phone terminal, the main software functional blocks and the implementation flow chart of each module. The delay of video data is significantly reduced by adding video phone setting module and I/P frames sending and management module. As well as by the use of software enabling video encoder to dynamically send I frame of the algorithm according to current network status.
Research on the Mechanism of Extending Artillery Barrel Life by Electrical Explosion Spraying Technology
Authors: Jiang Xiao Lin , Wang Yan Ni , Lu Xin
Published: January 2012

Research and exploration on the mechanism of improving anti-erosion in artillery barrel life have been done to enhance anti-ablation property of barrel, which combined with the characteristics that the surface modification coating should have and used electrical explosion spraying technology (EEST) advantage. Preliminary conclusions have been drawn according to tests Results. Coating prepared by using EEST has significantly better in anti-erosion performance than coating prepared by using chrome coating.
Mining Plan Optimization Based on Linear Programming in Shirengou Iron Mine
Authors: Zhu Ming , Sun Jin Long , Liu Wen Sheng , Zhang Ai Xia , Zhou Hui Zhi , Ai Li Xin , Peng Ji Huan , Jia Yun Xi , Wang Lei
Published: January 2012

Faced with the difficult situation of the joint operation of open pit and underground mining in transition period in Shirengou Iron Mine, a suitable linear programming mathematical model of mining plan was established and synthesis optimization results were obtained, which would increase the overall economic effect of the mining operation during the transition period, while the limited reserves and ore quality control were entirely considered. A pronounced economic benefit was achieved by the project optimization. This mathematical model can be widely used in mining process to control the quality and quantity equilibrium of ore output, comprehensive utilize some waste rock and optimize the mining plan.
Efficient Antenna Selection in MIMO Correlated Channels
Authors: Li Guo Yan , Zhang You Guang
Published: January 2012

Multiple-input multiple-output (MIMO) systems can bring many advantages to wireless communication but suffer from high cost and complexity due to the multiple RF chains. In such systems, antenna selection is introduced as a technique to ease these problems.This paper addressedthe problem of antenna selection in spatially correlated channels. We propose an effective antenna selection method in terms of capacity maximization based on the transmit and/or the receive correlation matrix instead of the instantaneous channel state information (ICSI).Simulations will be used to validate our analysis and demonstrate that the number of required RF chains can be significantly decreased using our low complexity algorithm whileachieving very close performance to the ICSI-based method.
Analysis of Glyceraldehyde 3-Phosphate Dehydrogenase Gene in Lactarius Deliciosus Base on Bioinformatics
Authors: Li He , Zhou Guo Ying , Guo Liang , Liu Ju Nang
Published: January 2012

Glyceraldehyde 3-phosphate dehydrogenase is an enzyme that catalyzes the sixth step of glycolysis and thus serves to break down glucose for energy and carbon molecules. In the present study, some characters of the amino acid sequence of GAPDH of L.deliciosus were predicted and analyzed with the tools of bioinformatics. These results showed that the protein was composed of 20 kinds of amino acid; the theoretical pI of GAPDH was 7.08 and the theoretical molecular weight of GAPDH was 26165.9 Da; the total number of atoms was 3714. It was a stable protein. There were 7 glycosylation sites and it was a tetrameric NAD-binding enzyme involved in glycolysis and glyconeogenesis. N-terminal domain is a Rossmann NAD (P) binding fold. C-terminal domain is a mixed alpha/antiparallel beta fold.
A Range Measurement Scheme for Chinese Terrestrial Television Broadcasting Signals Included Positioning Systems
Authors: Li Wen Qi , Wu Hong , Zhang Nan , Jin Yuang , Guo Kai
Published: January 2012

This paper proposed a simple scheme for range measurement between the receiver and CTTB (Chinese Terrestrial Television Broadcasting) TV tower not depending on other aids. CTTB signals are used for range measurement and they are transmitted from CTTB TV tower. The scheme suits for any CTTB included positioning system. Simulated CTTB signals transmitted from CTTB TV tower are used to evaluate the performances of the proposed scheme. Simulations are done under both AWGN (additive white Gaussian noise) channels and real measured urban channels. And as a multipath fading exists in urban environment, we use a multipath rejection method to improve the range measurement accuracy. Our simulation results show that this range measurement scheme is effective in AWGN channels, and also in urban channels with the multipath rejection method. From the simulation results, we also know that the clock accuracy of the receiver affects the precision of this range measurement scheme.
Study on Object Contour Extraction Based on Hölder Exponent and Multifractal Spectrum
Authors: Zhang Jun
Published: January 2012

Object contour extraction is one of the most important steps for object segmentation and recognition. The edge detection method based on gradient detection have some disadvantages if there are some noise in image, the edge errors occur in the gradient detection stage will be transmitted to the edge connection stage and the errors can’t be modified during the procedure. Multifractal spectrum gives a complete statistical description of the singularity in the image. In this paper, a new method based on the combination of the singularity and multifractal analysis is proposed to extract object contour. The experiments show that the contour extraction results are encouraging.
Segmentation of Complex Microscopic Cell Image Based on Contourlet and Level Set
Authors: Chen Zhi Gang , Chen Ai Hua , Cui Yue Li
Published: January 2012

In order to more precisely segment complex microscopic cell image, a new image segmentation method by combination of coarse segmentation and fine segmentation is proposed. Firstly, the coutourlet transform and morphology are used to segment original image coarsely and get the subimages that include the particles. Then ,the Level Set method is employed to locate edge of the particles precisely. The method provides more accurate data for complex microscopic cell automatic recognition system. Taking example for complex urinary sediment image, the experiment results show that the method can segment urinary sediment images effectively and precisely and increasing the performance of urinary sediment particles recognition.
Finite Element Analysis of Electrical Explosion Spraying Technology
Authors: Wang Yan Ni , Jiang Xiao Lin , Yang Ping
Published: January 2012

In order to master the basic laws of preparation coating by electrical explosion spraying technology and obtain coating with higher mechanical properties, finite element analysis software is used to simulate temperature field in process of coated condensation. Some basic rules of process parameters are drawed. To obtain high-performance coatings, coating material whose sedimentary particle has a higher interface temperature is first considered according to the substrate material property parameters. In the process of prepare coating, voltage should be better to use peak Voltage of electric explosion spraying equipment. Self-inductance of circuit should be as low as possible.
The Analysis of Generation and Transformation of Strip Warps
Authors: Qin Jian , Zhang Qing Dong , Zhang Pei Cheng
Published: January 2012

The warps (curvatures) of strip in the continuous annealing can be classed as longitudinal and transverse warps. The analysis of warp is simplified from a three-dimensional elasticity problem to a plane problem, and it is proposed in this paper that the residual strain caused by metal rolling is the main reason for the transverse warps. The relationship between the different warps is also discussed on the basis of elastic analyses. Analytical estimates are derived and compared against field measurement. The warp mechanism on the strip steel production process is revealed which can provide the theory basis for decreasing warp.
Preparation of Epoxy/PEG Shape-Stabilized Phase Change Materials by In Situ Reactive Blending
Authors: Zhao Cheng Shou , Li Na , Wu Liu Yan , Chen Jun Min
Published: January 2012

Recently, solid-liquid phase change materials (PCMs) have caused much attention due to their large latent heat. In order to solve their sealed problem, shape-stabilized methods have become a popular research topic. In this study, we prepared epoxy/polyethylene glycol (PEG) shape-stabilized PCMs with different mass ratios successfully by in-situ reactive blending. The maximum mass percentage of PEG dispersed into epoxy to form epoxy/PEG shape-stabilized PCM was determined as 70wt % by observing the morphology at the temperature above the phase transition. The thermal properties, such as melting temperature, latent heat, were measured by DSC. The results showed that the melting temperatures ranged from 55.5 OC to 60.4 OC and the latent heat was proportional to the mass percentage of PEG.
Extraction Optimization of Antibacterial Substances from Amomum tsao-ko
Authors: Chen Wen Xue , Peng Mei Fang , Hu Yue Ying , Qiu Hou Yuan
Published: January 2012

The aim of this work was to optimize extraction procedure of antibacterial compounds from amomum tsao-ko and verify antibacterial ability of yields. Two methods were carried out and compared. One is ethanol reflux extraction, and the other is ultrasonic-assisted ethanol extraction which selected due to better antibacterial efficiency of the extract obtained. In order to improve extraction rate and antibacterial activity which both varied with ultrasonic-assisted extraction conditions, Box-Behnken design was employed. Studies showed that the optimum conditions for extraction antibacterial substances from amomum tsao-ko were determined to be: ethanol density 100%, soaking time 4h, extraction time 120min.
To Discuss the New Century’s Recessive Knowledge Management of Teachers in Senior Schools
Authors: Yang Jing
Published: January 2012

As the intellectual economy’s growing up, knowledge management becomes the main attraction to people gradually. Knowledge management is a kind of complicated system network, as an intensive professional knowledge service tissue---it’s profound nowadays for universities carry out knowledge management. Currently the core of knowledge management in Chinese universities is intensive knowledge management. For time is still short since knowledge management started to be carried out, so there’s no organized, completed theory about universities’ intensive knowledge management. This article mainly discusses the of college intensive knowledge management essentials, analyzes the problems existing on the whole management process and provide some strategies on it.
Asymmetric Information, Heterogeneous Belief and Risky Asset Pricing
Authors: Yu Xiao Qiang , Liu Shan Cun
Published: January 2012

In this paper, we put forward the assumption that investors have asymmetric information and heterogeneous belief and derive an asset pricing model. The model suggests the extent of asymmetric information or heterogeneous belief is positively correlated with the risky asset price, which matches the former empirical research.
Application of Pre-Grouting Technique in Yellow River Crossing Tunnel in Eastern Route of South to North Water Transfer Project
Authors: Wang Xiao Yan , Duan Shi Wei , Xu Xian E , Wang Hao Liang
Published: January 2012

The yellow river crossing tunnel runs through limestone at a depth of about 70m below the level of yellow river. Since the river water, phreatic pore water in loose Quaternary deposits and karst/fissure water in limestone communicates with each other, pre-grouting technique has to be employed before drilling and blasting excavation of the tunnel.
Theoretical Derivation of the Column (Ball) Expansion in Pressure Grouting
Authors: Wu Ping , Fu He Lin , He Yi Wu , Zhu Xian Zhen
Published: January 2012

Based on the assumptions:(1)The grouted soil is homogeneous and isotropic;(2)Slurry is Newtonian;(3)Slurry be injected into the strata from the bottom of grouting pipe;(4)In the soil slurry was spread in the ball shape, theoretical formula of the column (ball) expansion of the pressure grouting is derived , and described the FH3’s curing mechanism. This research could provide theoretical guidance for the implementation of grouting.
Prediction Algorithm of Spectral Reflectance of Spot Color Ink Based on Color Parallel and Superposition Model
Authors: Lin Chao Rong , Xu Jun Fei , Xu Jin Lin
Published: January 2012

Spectral prediction of spot color ink has always been a difficult problem in the field of color research. The current paper adopted color parallel and superposition models to deal with the Clapper-Yule model and to simplify the prediction model of spectral reflectance of spot color ink. respectively. Based on the experimental verification. the simplified method has a certain practical application value. and the spot color prediction of general presswork can meet the requirements fully. The most important consideration is that the simplification can largely reduce the computational difficulty. Moreover. the current paper compared the accuracy of color parallel model with the superposition model to simplify the spectral prediction model of spot color ink. The result showed that the color superposition model has higher accuracy in simplifying the spectral prediction model of spot color ink.
Oak Veneer Bleaching Technology
Authors: Shen De Jun
Published: January 2012

oak veneer furniture with bleach treatment process, and by orthogonal test method of oak veneer bleaching factors were analyzed to determine the bleaching process parameters, that is a certain quality and a certain fraction of the mass fraction of sodium hypochlorite oxalic acid composition of oxidized bleach treatment is better.
Raman Spectral Properties of β-Co2(OH)3Cl down to the Liquid Nitrogen Temperature
Authors: Lu Jing , Liu Xiao Dong , Xu Xing Liang , Fujihala Masayoshi , Meng Dong Dong , Zheng Xu Guang , Chen Zheng Wei , Guo Qi Xin
Published: January 2012

Raman spectra of the geometrically frustrated material sample β-Co2(OH)3Cl have first, to the best of our knowledge, been measured down to liquid nitrogen temperature using the experimental conditions of 10X-objective @ 60 mW and 50X-objective @ 5 mW, respectively. It is found that most Raman bands blueshift with decreasing the sample temperature, agreeing with the thermal expansion effect of common materials, but the Raman spectra from different experimental conditions are slightly different with each other at same temperatures. The difference between them has been explained by the local laser heating effect.
Numerical Simulation of Rubber Bladder Hydroforming Process for Shrink Flanging Parts with Large Curvature
Authors: Chen Ming He , Wang Fu Dong , Xiong Jie
Published: January 2012

The main defect of shrink flanging wing rib is wrinkling in rubber bladder hydroforming. In the aeronautical field, the side blank holder is usually used to avoid wrinkling. In order to obtain appropriate parameters of side blank holder, it be carried out that the simulation analysis for the process of the high hydraulic press rubber forming processes of high shrink flanging with side blank holder by the ABAQUS finite element software. Besides, the corresponding experiments verified also be implemented. The research results show that the sheet metal tends to wrinkle along with decrease of the blank lap width and increase of these parameters such as the distance between side blank holder and die, the dip angle and fillet radius of the side blank holder.
Research of Information Integration System Supporting for SMEs Rapid Product Development
Authors: Wei Jun Ying , Zhong Pei Si
Published: January 2012

An information integration supporting system supporting for SMEs rapid product development is established. The architecture of the system based on web services is builded and the key technologies such as the building of information resources ontology model, the semantic retrieval and the selection method of information resource are discussed. The system supports enterprises for rapid product development and enables product development and personnel to make full use of network resources, enhance their ability to develop new products.
Diseases Features and Treatment Measures of Expansive-Soil Channel Slope
Authors: Yang Xue Xiang , Ren Jun
Published: January 2012

Based on the basic of diseases features expansive soil, the treatment measures used in the channel slope of expansive soil are discussed. The treatment measures for solving cracking problem and expansibility of expansive soil is proposed.
Study on the Effect of Salt Modulation upon the Maize Drying Process
Authors: Li Jun Xing , Zhang Ya Qiu , Wu Wen Fu , Liu Chun Shan
Published: January 2012

A maize drying method of salt modulation is presented in this paper. Based on the thin-layer drying experiment [1], the effects of drying air temperature and salt amount on moisture removal rate is analyzed [2], and mathematical model equation is established on relationship between maize moisture ratio and drying time [3]. The experiment result shows that: a reasonable choice of the amount of salt, air temperature and other process parameters is useful to improve drying rate of maize. Salt modulated drying curve is exponentially. The more salt is added in, the faster the moisture removal rate. However, in the case of excessive salt, there may be a critical point of moisture change in the amount of salt until this point the faster the higher the salt amount, whereas the slower; if the critical changing point is higher than the safety moisture point, generally it will conductive to the maize moisture removal process.
Statistical Analysis on Accelerated Degradation Test Data Based on Multiple Performance Parameters
Authors: Pan Jun , Wang Xiao Yun , Chen Wen Hua , Xu Shi Wei , Qian Ping , Liu Hong Jie
Published: January 2012

In view of the multiple performance parameters accelerated degradation and need to consider its dependence, we should know how to statistical analysis on the data of testing, establish multiple performance parameters degradation path model and its distribution model and the accelerated model of degradation rate. The multiple performance parameters degradation data’s statistics has two different situations which are independent and dependent. So, A method is proposed which is multiple performance parameters of reliability comprehensive evaluation method based on least squares parameters estimation. This method can achieve rapid and effective assessment of their reliability by using an efficient Monte-Carlo simulation method to get the performance parameters degradation data.
Design of a Novel Heat Exchanger Using in Automobile Exhaust Thermoelectric Generator
Authors: Quan Rui , Tang Xin Feng , Quan Shu Hai , Wang Ji Guang
Published: January 2012

The output performance of Automobile Exhaust Thermoelectric Generator (AETEG) is related to the temperature difference and electric connection topology of thermoelectric modules, in order to decrease the ring current among the thermoelectric modules in parallel with different temperature difference and enhance the output performance, a novel heat exchanger using in AETEG is designed in this paper. The interior structure of heat exchanger with fishbone is analysed, then its surface temperature distribution is simulated with ANSYS software and experimented with thermal imaging instrument. Both of the results show that the surface temperature distribution of the fishbone heat exchanger designed in this paper is more uniform in lateral direction and dispalys an obvious gradient in fore-and-aft surface, compared with the one of cavity designed before, the novel heat exchanger has overwhelming advantage in the output performance of AETEG, and the method adopted in this paper is feasible and practical.
Effect of Cold Energy Storage of Single-Well Aquifer Thermal Energy Storage in Sanhejian Coal Mine
Authors: Zhang Yi , Guo Dong Ming
Published: January 2012

Effective implementation of technology of aquifer thermal energy storage (ATES) must form a "ground cold water reservoir" or "ground warm reservoir". In this paper, taking Sanhejian Coal Mine as an example, we analyze the effect of cold energy storage in single-well by analyzing the volume change of cold water body within different temperature ranges. Through the analysis of volume change of cold water body, it can prove that with the same irrigation temperature, the increase of irrigation flow makes the volume and percentage of cold water body in aquifer within different temperature ranges. And the impact on the cold water of 2-5°C is more obvious. With the same irrigation flow, both the cold water body and its percentage of 2-10°C in the condition of 2°C irrigation temperature are more than those in the condition of 5°C. The increase of irrigation flow and the decrease of irrigation temperature are beneficial to cold energy storage, and the effect of cold energy storage of the condition 3 (100m3/h irrigation flow and 2°C irrigation temperature) is the best in these four conditions.
The Application of Multi-Node Cable Element
Authors: Sun Xiao Yu , Wang Zhen Qing
Published: January 2012

A non-linear finite element model of inclined cables, cables with non-leveled supports, in the large displacement and deformation fields is proposed for computing the dynamic response to wind loads which blow in arbitrary direction. The temperature-dependent elastoplastic behaviors of cables were taken into account in the nonlinear finite element model. This model was used for an extensive looping factor parameter study.A parametric super element model for cable passing through multiple pulleys is presented in this study for the static analysis of structures. The proposed formulation,which accounts for longitudinal inertia forces, allows to spot the circumstances when the simplified approach, adopting longitudinal mode condensation, becomes too crude.
Modeling Analysis and Simulation of Hydraulic Axial Piston Pump
Authors: Hao Ming , Qi Xiao Ye
Published: January 2012

Based on characteristics of AMESim software and structural characteristics of aviation piston pump, the model of a rational aviation piston pump was constructed after simplified. In this issue, the equations of motion of the piston and the process of oil suction and oil discharge for a single piston are theoretically analyzed. The effects of the four kinds of leakage to the loss of flow rate and to the pulsing of the pump are emphatically analyzed. Through build the model of axial piston pump, which provides certain theoretical basis for design different kinds of model of the piston pump.
Study on the Plant Protection Effect of Highway Slope
Authors: Wu Qing , Chen Yuee , Zhang Lu
Published: January 2012

In order to verify the effect of plant protection design program of a highway slope in the western of Henan, the artificial simulating rainfall and runoff scouring test were carried out. The results showed that, under the condition of design frequency heavy rains, if the site conditions and the measures of plant configuration were different, the morphological characteristics of slope erosion were different too. There were some difference among the size, quantity and morphological changes of slope erosion gully. The rill width and depth of brown loess slope was biggest, and the bill average width and depth had a significant relationship with its length.
Research of On-Line Large-Size Forging Measurement System Based on LabVIEW
Authors: Zhao Xian Ling , Liu Jian Sheng
Published: January 2012

Forging temperature is usually around 1000°C in free forging scene. Manual measurement leads to large measurement errors. Adopting the non-contact 3D scanning technology, make the laser beam sweep across the forging surface to get three-dimensional coordinates of the points on the forging surface in space. Neighboring scan points separate by less than 0.25mm. The measurement error is less than 6mm. The coordinate,s data are sent to the LabVIEW procedure. The procedure analyzes the coordinates to calculate the size of the large-size forging to realize automatic measurement of the forgings. The procedure can also reconstruct the image of the large-size forging. These make us detect the real-time changes of the forging far from the free forging scene.
Study on Effective Elastic Constants of Homogenization Tube Sheet
Authors: Sun Yi , Kang Gao Ying , Cui Ding , Ge Jing Ran
Published: January 2012

The expressions of the effective elastic constants of composite material with cylindrical inclusions are derived based on M-T method, and it can be used in discussing the approximate range of effective elastic constant of air. Moreover, it is possible to homogenize tube-sheet by making use of the expression. The numerical result obtained is in good agreement with effective elastic constant adopted by the ASME code. It demonstrates that the approach is effective and accurate. At the last, the relationship between effective elastic and thickness of the tube-sheet is discussed.
Dynamic Response of Marine Gear under External Impact Load
Authors: Li Cheng , Qiu Chang Hua , Lu Nian Li
Published: January 2012

In order to determine the anti-shock performance of marine gear, dynamic model of gear-rotor-bearing system under external load is established. On the base of Hertz contact theory, the mathematical model of maximum stress response of the gear tooth contact area is developed and the typical shock spectrum was transferred to double peaks and triangle wave to simulate the process of base excitation. By simulating different impact pulse width and acceleration peak value, the programming result is in good agreement with Finite-Element simulation. The study considers that the bearing oil film can absorb impacting load and Information on stress response of gear contact area under external load could offer references for the design of marine gearbox to enhance the resistance to underwater shock damage.
Upwind Finite Element Method for Solving Radiative Heat Transfer in Graded Index Media
Authors: Zhang Lin , Wang Shu Yang , Niu Guo Ling
Published: January 2012

Radiative transfer equation (RTE) in Cartesian coordinates can be considered as a special kind of convective-diffusive equation with strong convection characteristics. For this convection dominated problem, standard finite element solutions often suffer from spurious oscillations. To avoid this problem, the upwind finite element methods based on streamline upwind (SU) and streamline upwind Petrov-Galerkin (SUPG) schemes are developed to solve multidimensional radiative heat transfer in semitransparent uniform and graded index media. Comparison between these two upwind schemes on the solution of RTE is carried out. The SUPG scheme is demonstrated to be better than the SU scheme as far as solution accuracy is concerned and have good accuracy in solution of radiative heat transfer in semitransparent graded index media.
Refining the Applications of Computer-Aided Numerical Methods to Differential Settlement of Foundation
Authors: Luo Long Xi , Mu Zai Gen , Chen Huan , Li Ben Hu , Yang Run Lin
Published: January 2012

Numerical methods have effective functions in prevention and remedy measures of differential settlement of foundation. And the development of computer-aided technologies magnifies this work. Are these computer-aided numerical methods emerged satisfying now? Obviously not, there are stills many flaws in the computer-aided numerical methods of prevention and remedy measures of differential settlement of foundation. In order to overcome these more or less flaws, we have these following methods: Develop essentially theoretical researches of numerical methods for differential settlement of foundation. Establish the data-base of practical examples of differential settlement foundation to provide sufficient precedents for computer-aided numerical methods researches. Get innovations related to and developed from practical appliances of computer-aided numerical methods to differential settlement. Research and develop software for computer-aided numerical methods in the differential settlement of foundation. Couple different numerical methods and thusly increase preciseness and efficiency of computing methods. Enhance measurement techniques of parameters for numerical calculations. Advance theories through practices for computer-aided numerical methods.
Monofractality of the Time Series Generated by Golden Section
Authors: Zhang Hong , Dong Ke Qiang
Published: January 2012

The purpose of the present study is to investigate the presence of fractal behaviours in the time series generated by the golden section using both statistical and geometrical approaches. The power spectrum, the statistical moment and the singular spectrum are calculated for the generated time series. The results from these methods indicate that the time series exhibit the monofractal behaviour.
Cubic Hybrid Mechanism Based on S[T] Output Base and P/R Input Base
Authors: Luo Jian Guo , He Mao Yan
Published: January 2012

Based on the flexibility of single couple of serial mechanism and the stability of multi couples of parallel mechanism, a new type of S[T] output base of hybrid mechanism presented, component of sphere joint run through the tiger joint, this component still the output one with the capability of rotate in three dimensional space. Add serial branch including three translation couple P or/and rotation couple R to the new type of S[T] output base, put these members on one cubic frame, twenty seven configurations obtained with 3-DOF(degree of freedom) allow of three dimensional rotation, twenty seven configurations belong to three conditions obtained with 4-DOF allow of three dimensional rotation and one dimensional translation, nine configurations belong to three conditions obtained with 5-DOF allow of three dimensional rotation and two dimensional translation, one configuration obtained with 6-DOF allow of three dimensional rotation and three dimensional translation, all those sixty four configurations have no more than six translation couple or rotation couple, and the sum of two kind of couple is equal to six. Developing new type of hybrid manipulator based on the hybrid cubic mechanism constructed with S[T] output base and P/R input base will be possible in theory and useful.
Simulation Test Research of Using the Ritchey-Commom Method for the Detection of Large Flat Mirror
Authors: Zhu Shuo , Zhang Xiao Hui
Published: January 2012

In the detection of large flat mirror, the Ritchey-Common test can achieve high accuracy measurement. A method which expands the compressed images due to Ritchey Angle and rotates the plane under test is presented, achieve two sets of influence functions through this we can built two equations according to two different angular positions, we can solve the equations by least squares method. Then through fitting the coefficients, we can get the flat errors ,this paper describe the simulation test of the method in order to prove the feasibility and reliability of this method.
Study on Fuzzy Control for Vehicle Dynamic Stability
Authors: Du Feng , Guan Zhi Wei , Yan Guang Hui
Published: January 2012

To ensure vehicle stability in critical and dangerous working conditions, a vehicle stability control strategy is proposed, which is to generate compensating yaw moment by using the combined action of active rear-wheel steering and differential braking. A corresponding fuzzy controller for the proposed control strategy is designed. To verify the control effect of fuzzy controller, the numerical simulation by using vehicle dynamic model is performed in critical condition. The simulation results show that the designed fuzzy control system can efficiently prevent the vehicle to lose driving stability during critical turning.
Development Scenario and Riser Selection for West Africa’s Target Oil Field
Authors: Liu Jun Peng , Luo Xiao Lan , Duan Meng Lan , Tian Kai , Feng Wei
Published: January 2012

Developing deepwater oil and gas resource is the trend of oil industry development. It is important to select a proper development scenario and riser system which works as a key tool to connect subsea equipment and surface body in a deepwater project. Based on the West Africa’s deepwater target field CNOOC owned, this paper designs a detailed development scenario-FPSO +SPS +Shuttle tanker according to the following factors: well, reservoir layout, environment, floaters availability, commercial considerations. Floater and riser selection interact with each other. Considering the development scenario, a basic method for selecting a proper riser system is presented. As a result, FSHR is selected from existing risers based on technology, reliability, risk and cost.
Face Tracking Algorithm Based on Sequential Monte Carlo Filter
Authors: Du Yun Ming , Yan Bing Bing , Jiang Yong Cheng
Published: January 2012

Incorporating color distribution and spatial layout, this paper proposes a sequential Monte Carlo filter posterior tracking algorithm using color and spatial information in HSV color space. The target model is defined by the spatial color information of the tracking face region. By computing the characteristic distance between sample and target, different weights associated with every sample and the posterior of state vector can be computed. The samples distribution trends to the state distribution, whose validity is guaranteed by the strong law of large numbers. The tracking results using weighted samples are given in simulation. Experimental results show the probabilistic approach is simple and computationally efficient. In addition, this algorithm based on the sequential Monte Carlo filter could predict the location of face and track its trajectory satisfactorily in various complex conditions.
Vibration of a Crane System Superimposed upon its Nominal Motion
Authors: Zhang Jin Fu , Luo Qi Ren
Published: January 2012

The equations of motion for a crane system with considering the elasticity of the hoisting cable are derived. Using such equations and the relationship between the actual motion and the nominal motion of the crane system, the equations of vibration of the crane system superimposed upon its nominal motion are established. The responses of the vibration can be determined by numerically integrating the equations using the fourth order Runge–Kutta method. Based on the analysis of responses of the vibration, some conclusions concerning the vibration are obtained.
The Effects of the Development of Teachers Training Programs
Authors: Wu Chao Yen , Huang Hsin Yi , Huang Min Chuan
Published: January 2012

The purpose of this study is to explore the alternative ways of performing teachers training programs from the perspectives of students, teachers, and schools to propose the methods of reformation of defense education courses in Taiwan. The research results show that the effects of national defense education are uncertain for three reasons. First, the correspondences of high schools with "core subjects of national defense education for general high schools" released by the Ministry of Education in 2008 is questionable. Second, the course time of national defense education in high schools has been changed to one hour per week, which is relatively short course time. Third, the outcome of the policy of elective courses of general education and the development of teachers training program for defense education is under observation.
A Novel Method for Tramcar Anti-Collision Warning System Based on Monocular Vision
Authors: Bi Hui Bo , Xian Xiao Dong , Huang Li Juan
Published: January 2012

For the problem of tramcar collision accident in coal mine underground, a monocular vision-based tramcar anti-collision warning system based on ARM and FPGA was designed and implemented. In this paper, we present an improved fast lane detection algorithm based on Hough transform. Besides, a new distance measurement and early-warning system based on the invariance of the lane width is proposed. System construction, hardware architecture and software design are given in detail. The experiment results show that the precision and speed of the system can satisfy the application requirement.
A Novel Method of Electrical Discharge Machining in Gas Gap State Control
Authors: Lu Zhi Xue , Guo Lie En , Yan Ying , Li Juan Juan
Published: January 2012

According to the characteristics of electrical discharge machining in gas, a reference voltage adjustment module was joined into the traditional reference voltage comparison gap state control system, to constitute a closed-loop gap state control system. The proposed gap state control method is expected to improve machining efficiency and machining accuracy of electrical discharge machining (EDM) in gas and improve the automaticity of electric discharge machine tool in gas. Meanwhile, it also has certain reference value for the traditional electrical discharge machining gap state control.
A System’s MTTR Allocation Method Based on the Time Factors
Authors: Zhou Dong , Lv Chuan , Li Yong Xiang
Published: January 2012

The maintenance allocation methods are important in the design and maintenance of product. However, these methods have lots of deficiencies in practical application, which is inconsistent with the purpose of the maintenance allocation. To allocate the system MTTR (Mean Time to Repair) to the subsystems more precisely and reasonably, a better model is needed. The aim of this paper is to develop a maintenance allocation model which can improve the applicability and operability, and solve the residue problem which exists in maintenance allocation. A simple case study is used to demonstrate how the model can be applied in a real case.
Dimension Error Analysis of Bearing Manufacture Based on Probability Statistics
Authors: Chen Guan Ci , Xie Ting Wang , Mao Fan Hai
Published: January 2012

Traditionally, quality control chart is usually used for the dimension error monitor in the bearing manufacture, which mainly shows qualitative results of the dimension distribution. However, probability statistical method is utilized for the dimension error analysis in the working procedure of the rolling bearing in this paper, which presents quantitative results. Furthermore, stock removal can be corrected by comparing the actual dimension probability distribution with the ideal one. Application in the bearing ring’s turning indicates that probability statistics has its advantage of quality control chart in the dimension error analysis and monitor.
Study on Integration of Equipment Running Status and the Management Model Based on Graphical
Authors: Wu Ming Ming , Tu Hai Ning
Published: January 2012

Equipment is the most important tools in the modern production, and equipment management in enterprise management is becoming more and more important. Equipment management, as a comprehensive application area, whether in theory and practical application is always on no end and limits, manufacturing enterprise should keep pace with the times, insist to increase economic benefits, strengthen management, increase the strength of management innovation as the center, to improve equipment management level.
Picking Robot Camera Calibration System Based on OpenCV
Authors: Peng Hong Xing , Zou Xiang Jun , Xiong Jun Tao , Wu Ding Zhong , Shen Jia Hui , She Ze Xuan
Published: January 2012

Aim at the effect of the radial distortion and tangential distortion, the camera calibration principle, geometric model and complex equation solution were studied, in order to reduce the artificial participation in proofreading and error correction, then the camera’s software precise calibration module based on OpenCV was developed. The results showed that the system was quickly speed, high precision and could satisfy the requirements of robot vision navigation system and built the foundation for the next step research.
Block Mechanism of Microclearance Block Liquid and Lifting Height Calculating
Authors: Gong Yan Nian , Yin Jin Dan , Ai Chi , Zhang Yong Kun
Published: January 2012

Mechanical seal mechanism was applied to study block mechanism of gaswell microclearance block liquid for the first time, which explained block mechanism of microclearance block liquid. The paper has built a block physical model of microclearance block liquid and has got calculation formulas of the block liquid lifting height. Then the block liquid lifting heights were calculated and analyzed in different microclearance widths and pressures. The sealing effect of the block liquid was discussed. The analyzed results showed that sealing effect of the block liquid was very obvious when microclearance width was lesser than 12μm. The paper not only enriched the study on block mechanism of gaswell microclearance block liquid but also proposed theoretical guidance to solve radically gas migration problem of micro-annulus.
Effect of Cellulose Nanocrystal on Crystallization Behavior of Poly(3–hydroxybutyrate–co–3–hydroxyvalerate)
Authors: Yu Hou Yong , Qin Zong Yi
Published: January 2012

The biodegradable nanocomposites of poly (3–hydroxybutyrate–co–3–hydroxyvalerate) (PHBV) with different cellulose nanocrystals (CNCs) contents were prepared by a solvent casting method. The effects of CNCs on the crystallization behavior of PHBV were studied by DSC. The DSC results showed that compared to PHBV, the melt crystallization temperature increased to 92.3 °C for the nanocomposites with 10 wt. % CNCs, which indicated that the crystallization of PHBV became easier with the addition of CNCs. Moreover, the non–isothermal crystallization kinetics study illustrated that overall crystallization rate of PHBV in the nanocomposites was faster than that of neat PHBV, which should be attributed to the strong heterogeneous nucleation of CNCs.
Enzyme-Mediated Grafting of AGE to Kevlar Fiber Using Horseradish Peroxidase
Authors: Liu Yang , Liang Guo Zheng , Gu Ai Juan , Yuan Li
Published: January 2012

The research is the reaction of the high-performance fiber Kevlar grafted allyl glycidylether (AGE),in the process ,we use the horseradish peroxidase ( HRP ) as the catalyst, H2O2 as the oxidant of free radicals initiator system .The grafted fiber was made to do the following performance tests: element analysis, infrared, SEM, XRD, TG, Contact Angle, tensile strength, be pull out by monofilament. We can see from the infrared spectra , the peak of the grafted fiber in 1510 cm-1and 1250 cm-1 increase apparently, it shows that the AGE has been grafted.There are new peaks in 760 cm-1 and 690 cm-1，proved the grafted position is in benzene rings; from the SEM ,we know the surface roughness of the grafted fiber increase apparently; the test result of TG showed the Yc increased regularly, both of them prove the succession of the grafting, moreover, the fiber also has the good thermal stability after grafted; the contact angle has been reduced from 80 to 60, shows the content of fiber surface polar groups has been increased, enhance the wettability significantly; the monofilament pull out test shows after grafting the adhesion between the Kevlar fiber and the epoxide resin matrix has been improved
Effect of Na-Doped Concentration on the Structure and Optical Properties of ZnO Thin Films
Authors: Wang Wei , Meng Wei , Liu Ming Hui , Wang Xin Bo
Published: January 2012

Na-doped ZnO thin films were deposited on microscope glass substrates by sol-gel spin coating method, the Na/Zn ratio were 0at.%, 5at.%, 7.5at.%, 10at.%, 15at.%. The crystal structures, surface morphology, and optical properties were analyzed by X-ray diffraction, scanning electron microscopy, ultraviolet–visible spectrophotometer, respectively. The results show that all the films are preferentially oriented along the c-axis perpendicular to the substrate surface. With the increase of the doping concentration, the roughness of the surfaces decrease and grain size grows from 17.1nm to 21.7nm, the sample with 10at.% Na exhibits best crystallinity and has lowest strain along the c-axis. The average optical transparency of the samples is higher than 70%, optical band gaps are between 3.213eV and 3.289eV.
Synthesis and Photoluminescence Properties of Two-Bands Excited SrSi2O2N2: Yb2+ Phosphors
Authors: Xu Xue Wen , Fu Kun , Hu Long , Lu Zun Ming , Zhang Xing Hua , Tang Cheng Chun
Published: January 2012

The crystal structure and luminescent properties of synthesized SrSi2O2N2: Yb2+ phosphors have been investigated to seek for convention phosphor for white light-emitting diode applications. The Sr1-xYbxSi2O2N2 phosphors have yellow-red luminescence under the exciting of blue light, which is attributed to the 4fn↔4fn-15d transitions of Yb2+. Although the chemical compositions for Sr1-xYbxSi2O2N2 materials are different, no shifts are observed from the excitation and emission spectra.
Research on the Influence of Surface Sizing on Handmade Xuan Paper’s Modification
Authors: Bai Wei Guo , Wang Li Zhen
Published: January 2012

With the development of digital reproduce technology for traditional Chinese painting, the current demand for high quality “digital xuan paper” and the requirements for its quality is increasing. Handmade xuan paper as the most basic and important material in traditional Chinese painting works, its unique brush pattern and click texture is not available in the “digital xuan paper” dedicated to the digital copy. Therefore, in the reproduction process for traditional Chinese painting, in addition to the rigorous reproduce process, the most important condition to obtain high-fidelity replication products is choosing a type of paper that meet the characteristics of traditional Chinese painting. Based on the digital inkjet technology in this paper, handmade xuan paper chose as the object was modified to obtain the technical requirements of digital reproduce by surface sizing process. Through the study process of different composition sizing agent and different sizing technology, find not only the Influence law of sizing technology and formula on tone level, clarity and color aspects of handmade xuan paper, but also the sizing technology and formula required for modifying handmade xuan paper to comply with part of Index in digital inkjet reproduce process. Through this thesis can provide a reference for handmade xuan paper in the field of digital reproduce technology.
Process Conditions of Exfoliated Single-Layer Graphite
Authors: Yang Cheng , Zhao Tian Yu , Sun Li Juan , Song Hong Song , Liu Da Bo
Published: January 2012

The graphite was exfoliated by concentrated acid treatment, strong oxidants oxidation, high temperature rapid thermal shock process. Investigated in detail that the kind of oxidants, concentrated acid ratio, oxidation time affected on the graphite expansion rate. Experimental results (expansion, micro-structure observation and chemical structure analysis of graphite) showed that the optimum volume ratio of concentrated sulfuric acid and concentrated nitric acid was 4:1; the expansion rate was better that added oxidant KMnO4than added oxidant K2Cr2O7; The best oxidation time (concentrated acid treatment time) was 30~60 min.
The Dynamics of Pin Gear Drive Drum Mixer
Authors: Wan Shu Hua , Bai Ming Hua
Published: January 2012

as the gear tooth wideth is very wide, involute gear drum mixer would have a great impaction and vibration to the entire system when the involute gear meshed in and out.we propose a new type of drum mixer which is pin gear drum mixer and we analysised the dynamics of pin gear drum mixer and involute gear drum mixer.