bluuebunny/crossref_metadata_2025 huggingface dataset:
Design of Vane Wheel Climbing Stairs Smoothly Based on Transformation of Circular Arc to Similar Archimedes Helix
Authors: Zhang Tie Yi , Pang Han Li , Wei Jun
Published: April 2014

This paper describes design of wheel which can both climb stairs and travel flat ground smoothly. Firstly the corresponding Archimedes helix for climbing a certain size stairs is calculated out. Then arc curve is used to approximate Archimedes helix and the round wheel consisted of circular arc can be converted into similar Archimedes helix vane wheel, enabling the wheel both to climb stairs and to travel flat smoothly. Inventor software is used for mechanism design and modeling.
Dynamics of a Radial Active Magnetic Bearing System during Maneuvering Flight
Authors: Zheng Kai
Published: April 2014

Active magnetic bearing (AMB) is a prime component of the more electric aircraft technology that aims at reducing weight and emissions, and augmenting reliability and efficiency for future aircraft. The effect of maneuvering flight on performance of AMB system is investigated. A mathematical model considering maneuver equivalent force is presented and based on the model stability analysis is presented in terms of asymptotical and regional stability. The research result indicts that maneuvering flight has a great influence on system dynamics and stability.
Modal Testing for Heavy Machine Tool Using Active Excitation
Authors: Luo Bo , Li Bin , Mao Xin Yong , Cai Hui
Published: April 2014

For application in large machine tools, the machined part quality, accuracy as well as machining speed depende greatly on the dynamics of the structure. In this paper, an active-excitation modal analysis (AEMA), using inertial force of the moving slider to excite the structural modes, is proposed. Modal parameters of the machine tool structure estimated by AEMA are experimentally validated. Since the artificial excitation produced by elaborate excitation equipment is replaced by the inertial force of the slider, the proposed method is much more practical and economical than traditional methods.
Optimization and Matching of Mini Passenger Car Suspension Parameters Based on DOE
Authors: Dong Jun Hong , Gu Can Song
Published: April 2014

The traditional way of the matching between suspension parameters and vehicle performance is that we assess the matching of suspension design parameters through the driver's subjective experience, this will lead that the vehicle development cycle is long and high cost, meanwhile the matching during the parameters of suspension is blindness. With the development of computer technology, combining the modern design theory and virtual prototyping technology, based on multi-body system dynamics method, the virtual prototyping model of mini passenger car was built. By using understeering degree, roll rate and total RMS acceleration values as evaluation indexes, the orthogonal experiment was designed and the range analysis was carried out, and the effects of the suspension structure parameters on handling stability and riding such as suspension rate of front suspension and rear suspension, torsion stiffness of antiroll bar, damping ratio of front suspension and rear suspension and so on were studied. Then the remarkable factors are found, the final results supply guidance and support for the optimization of the suspension parameters.
Optimum Design of the Catching-Mechanism Based on the Finite Element Method
Authors: Yan Mei Jiang , Zhang Yang
Published: April 2014

This paper presents a new catching-mechanism which is the key device of the casing continuous circulation system designed by us. The difference between different structures would have important effect on its stability and strength. In this paper, through limiting the spacing of installation and the strength of the catching-mechanism, we analyzed the effect of inclination of the horizontal hydraulic cylinder based on the finite element method. And the optimum design of the catching-mechanism which shall satisfy all of the constraints were achieved with the help of MATLAB, ANSYS and ADAMS.
Rotations of 4nπ Research and no Twisted Mechanism Example Analysis Based on the Theory of Braid Group
Authors: Fu Zhi Yu , Hang Lu Bin , Xu Hai , Cai Jin , Bian Huai Qiang , Lu Jiu Ru
Published: April 2014

The Cable or Pipe between the Two Relatively Rotating Platforms Exists the Twisted Problem. from Viewpoint of Braid Group Theory, Rope’s Twisted State is Researched on. Based on the Characteristics of a Special Garside Braids Δn and Δnk , the Equivalence of Two Rotation Modes is Revealed. also, that the Determination of Rotation Mode’s Minimum Rotate Range is 4∏ while Using Braid Theory is Proposed. the Theory of Braid Group can Not only be Used as a Criterion for Determine Whether the Cable is Twisted, Finally, but also can be Used as Avoid Cable Twisted during Mechanism Design.
Modeling of Fixed Joints Stiffness Based on Modified Least-Square
Authors: Duan Ming De , Feng Hao Liang , Liu Kang Hua , Lu Jun Yong
Published: April 2014

According to experimental data, the model of fixed Joints stiffness in machine tools was built by least square of relative error. The new regression equations were obtained by regression analysis. Compared to the original equations with Gaussian least-square, the relative error of new regression equations is within 3.5%, which reduces by 12.5% and the mean absolute percentage error (MAPE) decreases by 18.0%, 12.4%and 19.0% respectively.
A Review of Aeration and Cavitation Phenomena in the Hydraulic Shock Absorber
Authors: Luo Feng , Zhang Xiao Li
Published: April 2014

This paper aims to bring an organized overview of the damper malfunction due to the cavitation and aeration phenomena, which are normal problems for all kinds of hydraulic dampers. The object of this report is to describe, detect and simulate these damper failures.
Extraction of Gasoline Residues Using a Adsorption Tube
Authors: Liu Shu Jun , Yu Li Li , Gao Wei , Wang Bai
Published: April 2014

This paper describes the application of a adsorption tube to extract the gasoline residues. Then the gasoline residues were detected by vapor sensing arrays. The response profile of the array generated a reproducible pattern unique to gasoline that could be used to reflect subsequent sensor responses. The effects of temperature, time and adsorption tube types on the extraction of gasoline residues has been investigated. The results show that 120°C, 1.5min, and TENAX-TA adsorption tube were the optimum extraction conditions. Using the developed method can be used to extract gasoline residues in the fire.
Improved Efficiency in Organic Light Emitting Device Based on 4,4-bis(2,2-diphenylvinyl)-1,1-biphenyl as Hole Blocking Layer
Authors: Yang Hui Shan , Wu Li Shuang , Huang Zhi Yue
Published: April 2014

An organic light emitting device (OLED) with multilayer structure is reported. The devices were made of ITO/ m-MTDATA (45 nm)/ NPB (10 nm) / DCJTB (0.05 nm)/DPVBi (x nm)/ Alq:QAD 0.5% 20nm /Alq (50-x nm)/LiF(1nm)/Al, by doping combine with non-doping method. The ultrathin layer was introduced for the yellow emitting layer by using 4- (dicyanomethylene)-2-tert-butyl-6 (1,1,7,7-tetramethyljulolidyl-9-enyl)-4H-pyran (DCJTB). The ultrathin layer offered an attraction in that it allowed the easy handling process and accurate thickness control, it enabled high device efficiency with simple architecture.The device shows the current efficiency of 2.79 cd/A at 12V, its maximum luminance is 17450 cd/m2 at 14V, respectively.
Polymerization and Characterization of N-[o-(4-phenyl-4,5-dihydro-1,3-oxazol-2-yl)phenyl] Methacrylamide
Authors: Fu Zheng , Chen Long Hua , Li Sheng Jun , Yuan Chao
Published: April 2014

A novel type of chiral methacrylamide derivative, N-[o-(4-phenyl-4,5-dihydro-1,3-oxazol-2-yl) phenyl]methacrylamide ((R)-PhOPMAM), was synthesized and radically polymerized to the corresponding polymers in moderate yields. The polymerization characteristics and the chiroptical behavior of the resultant polymers have been examined in detail by using IR and 1H NMR spectroscopies in comparison with our previous observation. The polymers showed relatively high molecular weights(Mn=5000-10000) and large specific rotations([α] 25D = -326.0°～-357.4°).
Research on Corner Control Strategy of the WEDM
Authors: Huang Qi Hong
Published: April 2014

Corner machining accuracy has always been one of the important properties of WEDM. In this paper, the reasons for the corner error of the WEDM were discussed. Then the mathematical deflection model of the electrode wire was established. By experimental measurements, the kerf width and the deflection of the electrode wire were obtained. Then the corner control strategy of the WEDM was proposed. Through experiment of the Comparison of corner error between control strategy with corner control and the one without corner control, it shows that the processing accuracy was improved effectively.
Study on Relationship between Carbon Black and Dielectric Properties of Tire Rubber in UHF Band
Authors: Song Ting Qiang , Zhou Yan , Ma Lian Xiang
Published: April 2014

In UHF band, the effects of carbon black component on the dielectric properties of rubber composites are studied through experiments. The results show that the content of the carbon black have great effects on the dielectric properties of the composite rubber. The higher content of the carbon black in the rubber composite, the larger the permittivity and dielectric loss tangent. At the same time, the operating frequencies also have great influence on the dielectric properties of the rubber composite. In the UHF band, the permittivity and the dielectric loss tangent of the rubber composites decrease with frequency increasing.
Research on the Detection and Tracking Method of Ship Intrusion and Remaining
Authors: An Ting , Yang Zhi , Li Yong Qian
Published: April 2014

This paper researches on the detection and tracking technology of ship intrusion and remaining based on the special surveillance video scenes of sea. A ship detection and tracking method that combines the adaptive background subtraction with centroid algorithm is proposed. Compared with the method of edge orientation histogram, the method proposed in this paper shows a lower computational complexity and a better real-time performance. The experiment demonstrate that this method has a high degree of accuracy. And it makes a realization of detecting and tracking of ship intrusion and remaining within the surveillance sea.
Design of a High Voltage Switching Power Supply with Soft Switching Technology
Authors: Shao Zhu Lei
Published: April 2014

Aiming at the application requirements of miniaturization and energy saving in the field of high voltage power supply, a high voltage switching power supply with soft switching technology was designed. The soft switch technology which makes the loss of switch power supply decrease obviously,and the dual voltage rectifier technology can effectively reduce the volume of switching power supply. Circuit parameters of switching power supply are optimized in order to further improve the efficiency of power supply. From the experiment results, the high voltage switching power supply meets the design requirements, and suitable for the strict requirements of environment on the volume and efficiency.
Research on Coordination Tuning of V/Hz Limit and Over-Excitation Protection of a Generator
Authors: Liu Gui Lin , Song Wei
Published: April 2014

According to the unreasonable phenomenon of coordination of V/Hz limit and over-excitation protection, summarize the coordination principles of V/Hz limit and over-excitation protection with definite time and the principles of V/Hz limit and over excitation protection with inverse time. Analysis the operation characteristics of V/Hz limit and over-excitation protection, and understand two sets of schemes of over-excitation. By learning the relevant theoretical knowledge and their function, it can be derived that V/Hz restriction should take precedence over excitation protection action. On this basis, combined with engineering example to analysis, put forward to consider a reasonable difference to guarantee the safety of generations better when both have a reasonable coordination.
Research on Electrical Characteristics of a Novel Balance Transformer with Asymmetrical Winding
Authors: Li Yong Sheng , Sheng Yi Fa , Zhang Kai Yi , Fan Bo
Published: April 2014

For problems of zero sequence current and negative sequence current of traction transformer in Electrified Railway, a novel balance transformer with asymmetrical windings was presented. By a systematic analysis method based on the magnetic force balance equations, winding connection equations, output-port equations and voltage transfer equations, the current relationships of the primary windings and secondary windings, the balance condition and the short circuit impedances (when the neutral current in the primary side is zero) were deduced, and the electric characteristics of the balance transformer was analyzed. Through the experimental model of balance transformer in simulation platform based on Matlab/Simulink, the electric characteristics of balance transformer and change law of zero sequence current and negative sequence current in different mode were researched. Correctness and feasibility of the theoretical analysis are verified through the simulation experiment.
Analysis of Low Frequency Oscillation in Interconnected Power System under Hedge Operation Mode
Authors: Gao Xun , Meng Jie , Li Yi Qun , Wang Ying , Zhang Wen Chao
Published: April 2014

A phenomenon that the damping ratio will decrease when the power flows from both sides to the primary power grid is summarized and analyzed in the paper. Based on analysis of the damping ratio change of West Inner Mongolia-Shandong oscillation under the sequential operation mode and the hedge operation mode, a three-machine equivalent system is established to study edge to edge (ETE) oscillation mode under hedge operating mode of the power system. The influence of magnitudes and trends of power flow on damping ratio is analyzed, and the reason that why damping ratios decreases when both sides send power to the mid-side power grid is explained.
A Hybrid Technique for Harmonics and Interharmonics Estimation in Power System
Authors: Xiao Jian Ping , He Yi Gang , Deng Fang Ming , Wu Ke Han
Published: April 2014

A new hybrid technique based on ADALINE (Adaptive linear element neuron) associated with Prony algorithm is presented for harmonics and interharmonics estimation in power system. The Prony algorithm can detect the accurate frequencies of harmonics and interharmonics, and the ADALINE can get the amplitudes and phase angles. If the noise is present, the Prony algorithm can get less accurately frequencies to reduce convergence time of the ADALINE, and the ADALINE will obtain higher accurately frequencies, amplitudes and phase angles by adjusting the weights. The validity and feasibility of the proposed algorithm is demonstrated by numerical simulations.
Analysis and Countermeasure Study of Photovoltaic System Fault Based on Fault Tree and HAZOP
Authors: Wang Yue , Guo Fu Yan , Huang Min De
Published: April 2014

Photovoltaic system because of the complexity of the circuit functions, prone to failure. In this paper, according to the fault characteristics, established the HAZOP method combined with the method of fault tree model, combined with a service building of Tianjin to analyze the fault and gives countermeasures.
Study on Video Transmission System of Central Heating Based on 3G Wireless Network
Authors: Sun Tie Qiang , An Yong Li
Published: April 2014

Taking the central heating of Caofeidian for example, this paper introduces the video transmission system which bases on 3G wireless networks and the realization of communication. The video images are collected in remote heat-exchange station and are transmitted to the monitoring and controlling center through 3G wireless network. The result of operation indicates that the system which meets the requirements of long-term stable operation of remote monitoring is not only easily operated, but also with high regulation accuracy and stable.
Reliability Evaluation of Distribution Networks Including Micro-Grid Considering Time-Varying Failure Rate
Authors: Zou Jiang Ping , Zhang Bi De , Ling Xiao Zhou , Deng Jun , He Di , Zhang Qiang , Long Jie
Published: April 2014

To analyze the impact of components operating environment and micro-grid on the distribution network reliability evaluation, the characteristics of components failure rate changes with operation condition are researched, and the full life cycle of the time-varying failure rate model of non-power components is built; reliability model for co-generation of hybrid, photovoltaic and energy storage system is introduced, as the power output of photovoltaic and hybrid generation is stochastic; the reliability of modified IEEE RBTS is evaluated by the built model and sequential Monte Carlo simulation method after load failure effect table is established by the reachability analysis method, the application of the proposed method to calculation example verifies its effectiveness by comparing and analyzing the reliability indices in different situations.
2D Finite Element Analysis of a Excavation Supporting Types in Changchun City
Authors: Liu Xiu Xiu , Sun Guang Li , Sun Chao
Published: April 2014

In this paper, By using a large common ABAQUS finite element software to simulate a hospital,s deep foundation pit excavation process in Changchun, Contrasting respectively pile-anchor retaining structure which had been adopted in the project with pile-strut bracing structure. Obtaining stress and deformation of soil and the stress and deformation of pile under the two supporting types, Analysis of the two supporting types feature only from the perspective of the force and deformation in foundation soil and piles, To provide a reference for future support in deep foundation excavation work.
Computer-Aided Building Structure Design Based on Residence Status
Authors: Zhang Wei Qi
Published: April 2014

Digital building methods and means to change the performance of traditional architecture, design and manufacturing to effectively integrate together. It emphasizes the process of design, attention to the interaction between the factors, is a computer designed, this paper studies the factors that influence the index construction site building sunshine, environmental noise, natural ventilation, insulation, etc. into the internal logic of the language of the computer, then architectural form can be generated by a computer, through constant revision and feedback, and ultimately establish optimal architectural form.
Effect of Structural Performance of Bridge Based on Fatigue S-N Curves
Authors: Xia Xiao Hui
Published: April 2014

The probability of S-N curve is one of the basic material fatigue reliability analysis and design. Determination of S-N curve is the basis of the fatigue life of obedience lognormal based on the application of statistical methods to fit the experimental data obtained fatigue. This paper studies the construction of reinforced Fatigue S-N Curves overloading effect on the structural performance of the bridge. In this paper, the fatigue reliability theory as a useful supplement, has some theoretical significance and value of work.
Study on Computer Aided Design of Three-Dimensional Landscape
Authors: Chen Xiao Yuan
Published: April 2014

The three-dimensional roaming system of landscape design and development in this paper based on the analysis of virtual reality technology and landscape characteristics. the system is to achieve a multi-view, multi-scenes tour. Further proposed of virtools technology significance in the garden is put forward and specific applications of virtual reality technology in landscape design are put forward.
Study on Three-Dimensional Building Performance in Landscape Design
Authors: Sun Ying , Gao Guang Lin
Published: April 2014

Landscape dynamic roaming produced according to drawings on a computer to simulate the real environment of the virtual landscape, the evolution of the past, we changed the traditional paper model or three-dimensional model of the digital model through digital technology to simulate real environmental landscape in the computer. In this thesis, a three-dimensional computer architecture design methods, the performance of the method proposed three-dimensional landscape design, engineering calculated by the environmental performance of buildings with different fiber, help to improve the level of digital three-dimensional architecture.
Research on CBR Technology in the Intelligent Design of Truck Driving Axle
Authors: Wang Feng Yuan , Zhang Meng Meng , Zou Xu Dong , Liu Jiang , Sun Gang
Published: April 2014

Driving axle intelligent design platform was completed to achieve rapid and automotive design by a computer to do a series of design work,. To make the design platform more intelligent, better educated, case-based reasoning techniques (CBR) were used to achieve the retrieve of similar examples and components variant design. A case base was established by truck driving axle with mature products as an example. Two stage retrieval methods were used to retrieve similar instances. The user interfaces were designed according to the design needs of personnel and platform requirements.
Cutter Contacting Machining Paths Generation Method for Surface Flat-End Milling
Authors: Li Hui Ying , Chen Liang Ji
Published: April 2014

In order to enhance machining precision of complex surfaces with a flat-end cutter, the generating method of cutter contacting (CC) paths is presented in this article. With the method of coordinate transformation, effective machining radius of a flat-end cutter had been deduced and the step-over formed by two adjacent CC paths were implemented. The parameter increment along the CC path interval direction was calculated by using geometric analysis of the local area of CC point. The corresponding NURBS path of tool center points including knot vector and controlling points was obtained from the cutter contacting points.
Simulation of a Flexible Manufacturing System for Semi-Products Packaging
Authors: Patic Paul Ciprian , Pascale Lucia , Măntescu Gabriela
Published: April 2014

In this paper one proposed to exemplify a modern solution of an automatic control of industrial production lines. The necessity to align at the requirements of industrial competition has led to a degree of automation of increasingly advanced that the human intervention into the processes is minimal. A high productivity means lower flow interruptions as manufacturing, so the systems which control these lines must operate without errors. This can be done only by testing control programs and monitoring automation systems and, also, through simulate the manufacturing process.
Scenario-Based Risk Analysis of the UAV Flight Test
Authors: Li Shi Jie , Wei Fa Jie , Zeng Jun Wei
Published: April 2014

Due to high uncertainty and complexity, the flight test missions of the Unmanned Aerial Vehicle (UAV) are implemented with high risk. To mitigate the risk, many scholars have done a lot of researches to study the risk events in flight test. The different interrelations and the potential synergetic effects among the relevant risk events related to a decision make it a challenging issue to create explicit relationships of the risk events. Cross Impact Analysis (CIA) appeared as a methodological tool for dealing with this kind of complexity in the 1960’s. CIA can worked with other methodological approaches to increase its functionality. This article uses a method to generate important risk events and scenarios about what may happen in the future flight tests. In this method, Interpretive Structural Modeling (ISM) is used to combined with CIA to improve the final forecasting. This scenarios-based method allows working with large sets of risk events and can detect critical risk events. The final results of the method can be represented by graphics. The practical implications of the proposed method are illustrated with an example.
Study on the EEDI Calculation and Reference Line of River-Sea-Going Ship for Certain Routes
Authors: He Juan , Cai Wei , Huang Guang Hui , Chen Ying
Published: April 2014

In this article it compares the different EEDI formulas proposed by IMO and CCS formula. On the basis of it, the river-sea-going ships EEDI calculation formula can be put forward. After comprising the EEDI reference lines of every kind of sea-going and Inland ships and compute the practice example of the developed river-sea-going ship, the conclusion can be drawn that the reference line of Inland ship is generally lower and should be the reference in verification of river-sea-going ship in the absence of river-sea-going ship EEDI reference line nowadays.
The Influence of Beauty Modeling Training Course in Teaching Efficiency – A Case of Creative Beauty Salon Design in Continuing Educational University
Authors: Wu Pei Ling , Chiang Ching San , Chen Heng Sheng
Published: April 2014

The purpose of this study was to find out the influence of beauty modeling training course in teaching efficiency from the creative beauty salon design in the beauty science department of continuing educational university, following the theories and establishing the training model by applying the structure equation modeling, and tested the fit of model as well as the influence of variables. The results indicated the model was deleted 9 of 35 items and connected seven relationships variables by questionnaire survey, the fit and model were built, the advantages of beauty modeling training course teaching influenced learning from creative beauty salon design course teaching. Two teaching contents in creative beauty salon design course, the practical teaching and creative beauty show teaching, the contents of the former to teach theory and practice and the latter demonstrational show was added. Two learning class students of the Beauty Science Department of Continuing Educational Collage of Chienkuo Technology University in Taiwan in 2011 and 2012 academic years as the pilot test group to instead of experimental group, and the control group respectively, It found that the latter is better the former. The learning and application, and that efficiency teaching is accepted.
Whole Life Cycle Management of Prefabricated Construction Research Based on BIM Technology
Authors: Qi Bao Ku , Li Chang Fu
Published: April 2014

Now prefabricated construction become the focus of the research, this paper summarizes the advantages and disadvantages of prefabricated construction, and points out the problems exposed by the prefabricated building in management. The BIM technology is introduced into the whole life cycle of prefabricated construction, detailed elaborated the BIM technology application in the whole life cycle of prefabricated construction management. The analysis results show that BIM technology has vast application prospect in the whole life cycle of prefabricated construction management throughout the design, production, construction, and operation and maintenance aspects.
Analysis on Experience and Preparedness about Power Failure in the Residential Sector (in Korea)
Authors: Won An Na , Hong Won Hwa
Published: April 2014

A survey was carried out on 2,250 households around the nation for the purpose of examining power failure experience and measure in the household sector. Implications of this study are as follows. ▸ 90% of the subjects had experience of power failure, among which about 50% had longest time of power failure between 5 ~ 30 minutes, 38% between 1 ~ 12 hours, and 3% over 12 hours. ▸ The biggest cause of power failure was “Natural disasters during summer such as typhoon”, and natural disasters during winter showed relatively low ratio of 2%. Causes other than natural disasters included aged electric facilities in shared apartment complexes experienced by 18% of households and power failure from electricity supply failure experienced by 18%. ▸ While 40% of households selected 「Discomfort of living caused by darkness」 as the biggest difficulty of power failure, over 50% of households did not have any special preparations about power failure. 87% of households responded 「Batteries」 as the most important goods to be secured during power failure 30% of households responded that 「There is no need to prepare for any goods」, showing lack of active preparedness about power failure situation.
Design and Implementation of University Human Resources Management Platform Based on YII
Authors: Jia You Liang
Published: April 2014

University human resources management is an important part of school management. To summarize, teachers can be managed through a set of scientific and effective method to strengthen the school connotation of the construction of the strategic target. For numerous schools, facing more challenge and competition, in the "survival of the fittest", the "fittest" under the natural law of survival and development, to learn the advanced management experience and management technology, has become urgent and important task of school. In the center of the "people-oriented", "humanistic management" of today, human resource management has become an important factor of success of the school connotation development. Evaluation model is widely used in our common life, which can undertake assessment of a decision and personnel factors, and assessment or evaluation algorithm types are also abundant, including the factor method, fuzzy comprehensive evaluation [, the analytic hierarchy process (ahp), and some algorithm based on artificial intelligence (ai), all these algorithms are effective to solve part of the problem domain. The evaluation of teachers' professional ability involve more factors, including some subjective factors, such as personal moral, lifestyle, ambition, etc., and some objective factors such as working length of service users, specialty, education, scientific research, honors won, etc. If we only use the grade staff to do so, the measurement result of a grade may be affected because of personal emotions, and if we simply evaluate from the objective factors, which may lead to stylized, strengthening the results, lighting the evaluation of the masses .So for teachers' evaluation, we do from these two aspects at the same time, setting subjective and objective factors according to each assessment scheme. For subjective factors, we invite the marker personnel to score by our measurement system based on the subjective factors of scores, and for the objective factors, automatic gradings of staff are done according to the set of weights of objective factors, score, and accumulative number of grading in the scheme of the measurement. We adjust the proportion according to the previous results, as well as the evaluation scheme, to get the sorting and evaluating list of the measured personnel.
Design of Micro-Teaching System Based on Network
Authors: Luo Ying , Zhang Xiang Qing
Published: April 2014

In order to complete the task of microteaching, schools have introduced microteaching system. The function and quality of microteaching system directly affects teaching effect. Through teaching practice, the shortcomings of traditional microteaching system become increasingly significant. Meanwhile microteaching system based on network can not only solve the disadvantage of traditional microteaching system problems, but also its automation and management has been greatly improved. Therefore, microteaching system based on network and its construction problems have been got more and more attention of research scholars on microteaching. The paper introduces the construction and advantages of this system.
Research on the Patent Licensing of the New Generation Information Technology Industry in China
Authors: Qiao Yong Zhong , Liu Si Wen
Published: April 2014

With the development of the new generation of information technology industry, the cooperation mode of enterprises become more and more complicated. A research on the technological cooperation is of a significance based on a perspective of patent licensing. By analyzing the patent licensing data of Huawei, Lenovo, ZTE and Datang in the new generation information technology industry in China, we can draw the following conclusions: the patent licensing amount of three companies show the wave declining trend yearly; there are an obvious difference in the distributions of the product patent, the process patent, the product and process patent of patent licensing in the different enterprises; there are an obvious difference in the positions of patent licensing in the different enterprises.
Study on Chinese Waste Home Appliances Recycling and Reusing System
Authors: Liu Wei , Chen Jing Xin
Published: April 2014

Recycling and reusing of renewable resources is the important areas to improve the efficiency of resources use and development of circular economy. In this paper, we analyzed the status quo of Chinese treatment of waste home appliances and found problems, used the basic principles of circular economy to build Chinese waste home appliances recycling and reusing system for recycling of waste home appliances and promoting circular economy gradually developed in the area of renewable resources.
Vehicle Association and Tracking in Image Sequences Using Feature-Based Similarity Comparison
Authors: Cho Du Hyung , Ali M. Naushad , Chun Seok Ju , Lee Seok Lyong
Published: April 2014

Object association and tracking have attracted great attention in the computer vision. In this paper, we present an object association and tracking method for monitoring multiple vehicles on the road based on objects' visual features and the similarity comparison between them. First, we identify vehicles using the difference operation between the current frame in CCTV image sequences and the referential images that are stored in a database, and then extract various features from the vehicles identified. Finally, we associate the objects in the current frame with those in the next frames using similarity comparison, and track multiple objects over a sequence of CCTV image frames. Empirical study using CCTV images shows that our method has achieved the considerable effectiveness in tracking vehicles on the road.
Fault Diagnosis of Gearbox in Wind Turbine Based on Wavelet Transform and Support Vector Machine
Authors: Li Peng Fei , Xiang Jia Wei
Published: April 2014

To deal with the lack of effective experimental data under the current condition for gearbox fault pattern recognition, the Wind Turbine Drivetrain Diagnostics Simulator (WTDS) was used for experimental investigation and gained large number of gear fault samples. The wavelet transform is employed to decompose the vibration signal to obtain the energy ratio in each frequency band. Taking energy ratios as feature vectors, the pattern recognition results are obtained by the support vector classification (SVC). The experimental results show that the hybrid approach is robust to noise and has high classification accuracy.
Target Recognition Application of Real-Time Optical Information Processing System
Authors: Zhao Lan , Zeng Tao
Published: April 2014

This paper focuses on the visual tracking algorithm in optical imaging surveillance and tracking system. The tracking particle filter framework deemed find sparse representation problem, can effectively overcome the visual tracking algorithm appears in noise, occlusion, background interference and complex situations such as illumination changes. Morphological methods using digital occlusion area is detected to determine whether the date is added to the template tracking results set, thereby updating the control template, to effectively prevent the drift tracking results.
Acquisition of Point Cloud Data in 3D Reconstruction
Authors: Zhu Meng Qiang , Yang Jie
Published: April 2014

This paper takes the following measures to solve the problem of 3D reconstruction. Camera calibration is based on chessboard, taking several different attitude images. Use corner point coordinates by corner detection to process camera calibration. The calibration result is important to be used to correct the distorted image. Next, the left and right images should be matched to find out the object surface points’ imaging position respectively so that the object depth can be calculated by triangulation. According to the inverse process of projection mapping, we can project the object depth and disparity information into 3D space. As a result, we can obtain dense point cloud, which is ready for 3D reconstruction.
3-Dimensional Brain MRI Segmentation Based on Multi-Layer Background Subtraction and Seed Region Growing Algorithm
Authors: Wang Xiao Hong , Liu Bin , Song Zhi Qiang
Published: April 2014

Segmentation of brain MRI in an image sequence is one of the most challenging problems in image processing, while at the same time one that finds numerous applications. In this paper, we propose a robust multi-layer background subtraction technique and seed region growing approach which takes advantages of local texture features represented by local binary patterns (LBP) and photometric invariant color measurements in RGB color space. Due to the use of hybridization of layer-based strategy and seed region growing approach, the approach can model moving background pixels with quasiperiodic flickering as well as background scenes which may vary over time due to the addition and removal of long-time stationary objects. The experiment results prove that in the view of the brain MRI segmentation, this algorithm provides fast segmentation with high perceptual segmentation quality.
Application of an Improved Algorithm for Denoising of Wavelet Threshold in Palmprint Recognition
Authors: Li Jing Wen , Yang Shan Hong
Published: April 2014

In the acquisition process of palmprint image, the image is often subject to interference from the outside noise.This noise will affect the future of Palmprint feature extraction. Denoising of wavelet is a common method for denoising of palmprint image. The defect of traditional soft and hard threshold functions in image denoising is analyzed. An improved threshold function is proposed on the basis of soft and hard threshold functions. The conventional hard, soft threshold functions and the improved function are used respectively in image denosing. Experiments prove that the improved wavelet threshold function is better than conventional soft, hard threshold function in denoising effect.
Extraction Algorithm of Lip Characteristic Parameters Based on Interpolation
Authors: Meng Ying Jie , Bai Li Xin , Liu Wen Jun , Liu Ming Wen
Published: April 2014

In the research of identity recognition based on lip motion features, there are limitations for the existing algorithms of lip characteristic parameters extraction. This paper uses the strategy of lip static/dynamic geometric features fusion, designs the lip feature parameter extraction program based on interpolation, and implements the major aspects of processing algorithm of the program. The solution is based on the speaker's key six primitives spelling lip sequence image, firstly generates the lip key point coordinates in the image, then based on Lagrange interpolation obtains function curve coefficient of upper and lower lips' key points , lastly the two curve coefficients are combined to form lip motion feature information of human speaker's some specific sounds; Simulation results show that the extraction of characteristic parameters of the program not only have a high efficiency and availability, but also have the advantages of good storage.
Apply Two Methods to Measure Engine Noise Source Identification
Authors: Gu Can Song , Dong Jun Hong , Gao Hui
Published: April 2014

Based on sound intensity and acoustic array methods, noise source identification of an engine is measured at idle condition. The main noise source of intake surface and exhaust surface are determined, also their frequency spectrum analysis. This two kinds of method testing results fundamentally agreed very well, and verify acoustic array method is more simple and easier than sound intensity method.
Design of On-Line Detection System for Paper Defects Based on Line-Scan Camera
Authors: He Ping , Liu Chao , Wang Meng , Cao Sheng Mei
Published: April 2014

Paper defects mean that there are some defects in the paper such as hole, emboss, and fold during the paper production, which mainly results from the limitation of technological level. In the past time, artificial visual inspection and off-line checking were often used to detect the paper defects. However, its shortcoming was highlighted along with the improvement of industrial technology level and increasing demand for paper. In order to realize the online detection and markers for paper defects, the project designs the on-line detection system based on line-scan digital camera. Firstly, the principle and detection scheme of the system for the paper defects was presented. Then the overall structure of the system was designed. After that, the hardware circuit of the system was designed using TMS320F2812 as main control chip. It mainly consists of the function of each module and the working process of the system. Finally, the software of the image acquisition system was presented. With the experimental verification, the system has advantages of low cost, high efficiency and strong resistance to interference. The functions and indexes achieved the design requirements.
Integrated Virtual Instrument of Performance Test and Analysis for Fixed Equipments in Coal Mine
Authors: Li Man , Niu Qing , Li Zhi Ping
Published: April 2014

Aiming at the bumps in distributed instrumentation which is applied to performance test and evaluation of fixed facilities in coal mine, this paper proposed a new idea of establishing a virtual instrument with intelligence and integration. Complex and numerous testing parameters were classified according to their common features, the hardware and software resources were shared fully. The hardware platform was developed based on USB interface, met the requirements of convenient movement in coal mine site. The design idea of modularization and design manner of LCOD component-oriented were adopted to develop the software, which made the instrument more universal, extensible and integrated. The performance evaluation and practical application shown that, this instrument can meet all the requirements of performance test and evaluation for fixed equipments in coal mine in terms of function, measurement accuracy, dynamic characteristics, etc.
Analytical Model of Wireless Sensor Networks Based on Data Aggregation for Debris Flow Monitoring System
Authors: Chen Nan , Fan Jing , Xiang Min Min , Qu Jin Shuai
Published: April 2014

In view of debris flow monitoring for complicated mountainous terrain, network topology is impacted by environmental change, this paper designing a structure-free network topology to enhance network robustness. While applying the weighted resampling algorithm, to avoid monitoring data loss, make sure fairness transmission sensor nodes. To solve the problem of energy consumption and the time delay in wireless sensor networks, a real-time data aggregation algorithm proposed to reduce the redundant information transmission, to improve the energy efficiency. The simulation results show that adopted the network model of data aggregation is effective in reducing the energy consumption and improves the quality of network communication, while meeting the requirements of real-time monitoring.
Design of Signal Processing Circuit under the Principle of EMC of the Piezoelectric Acceleration Sensor
Authors: Li Deng Hua , Hao Cui
Published: April 2014

Although piezoelectric acceleration sensors enclosure can shield electromagnetic pulse commendably, the electromagnetic pulse can be coupled into the sensor and interfere signal processing circuit in the high-frequency electromagnetic environment, which can lead to the failure of acceleration sensor. So, the reasonable design and optimization are necessary for the improvement of signal processing circuit anti-electromagnetic interference ability under the principle of EMC. Some methods were proposed in this paper, such as adding a filter circuit, increasing the spacing between the wires and increasing the number of ground wires, etc. Finite integration technique (FIT) is used in this paper for these simulations in CST software. Simulating results show that the transfer impedances of signal processing circuit under the high-frequency electromagnetic interference were greatly reduced after optimization and power integrity was greatly improved. It achieves the goal of enhancing electromagnetic interference resistance of the signal processing circuit, thereby reduces the influence of the electromagnetic pulse on the piezoelectric acceleration sensor greatly.
Design of Frequency and Amplitude of Sine Wave Measurement Circuit Based on MSP430
Authors: Sui Shou Gang , Xu Jing Ye , Zhang Jia Xu
Published: April 2014

Sine wave signal is a kind of typical electronic technology signal waveform, and frequency, amplitude and phase are three elements of the sine wave respectively. In order to measure the elements more accurately, scientific research methods is adopt in the design. Based on high precision of peak detection circuit combined with MSP430 MCU, the circuit for measuring frequency and amplitude of sine wave signal is implemented, and the results could be shown in the display circuit at the same time. The circuit can work within the 1kHz - 20kHz and 240mV - 5V sine wave signal, and has display circuit, which can display accurate measurement results, to achieve human-computer interaction.
The Driving Mechanism of Virtual Human's Action and Facial Expression Based on OSG
Authors: Xie Kong Kai , Shen Yan Chun , Ma Li Ni
Published: April 2014

According to the poor code quality,low render low efficiency, and limited scalability of virtual human drive mechanism and other problems, 3D rendering engine Open Scene Graph(OSG) has realized the efficient simulation and expression of virtual human action.Firstly, on the basis of the skeletal animation and spherical interpolation algorithm to achieve the virtual human motion animation.Then design the generating methods of the virtual facial expression animation related to the behavior consciousness by using three Bessel interpolation algorithm and based on deformation animation technology.Finally by using the animation technology in the OSG,the synthesis of virtual human motion and expression is realized based on the parameter control.Experience confirms that under the same number of scene nodes, using OSG engine code is more concise, and render faster.
Simulation of Underwater Target Echo Based on Highlight Model
Authors: Lin Wei , Liu Li Jie , Xu Yu
Published: April 2014

This paper describes that at high frequencies the reflection signal from an underwater target can be seen as the sum of an individual echo from certain equivalent scattering centers as such an underwater target can be characterized by highlights distributed within a spatial target structure. By analyzing the highlight structure of an underwater target echo, the synthesized echo signal can be simulated. In this paper, a submarine model is selected to analyze the echo characteristic of submarine based on highlight model. The simulation experiment results show that the model is a very reasonable two-dimensional acoustic representation of a submarine. The results also indicate that the highlight model can be applied to acoustic countermeasure system, which has an important application value.
A Method for Large Scale Ontology Partitioning and Block Matching Based on ROCK Clustering
Authors: Li Rong , Liu Lei
Published: April 2014

Ontology matching is a core task to enable interoperability between ontologies. In this paper, we propose a method for large scale ontology partitioning and block matching based on improved ROCK clustering. At first, two ontologies are partitioned based on improved ROCK clustering. Then we adopt block matching strategies based on taxonomy and anchors, and obtain matching results. Finally, we present experimental results with high matching quality and point out future possible research directions.