bluuebunny/crossref_metadata_2025 huggingface dataset:
Mathematical Model of Klingelnberg Cyclo-Palloid Hypoid Gear
Authors: Du Jin Fu , Fang Zong De , Xu Min , Zhao Xing Long , Feng Yu Min
Published: July 2013

The geometry of the tooth surface is important for tooth contact analysis, load tooth contact analysis and the ease-off of gear pairs. This paper presents a mathematical model for the determination of the tooth geometry of Klingelnberg face-hobbed hypoid gears. The formulation for the generation of gear and pinion tooth surfaces and the equations for the tooth surface coordinates are provided in the paper. The surface coordinates and normal vectors are calculated and tooth surfaces and 3D tooth geometries of gear and pinion are obtained. This method may also applied to other face-hobbing gears.
Simulation of the Induced Electric Fields in the Breast Tissue during MRI Breast Imaging
Authors: Tao Gui Sheng , Xia Ling , Zhu Min Hua , Li Xia , Xu Wen Long
Published: July 2013

This paper studies induced electric fields and current densities for peripheral nerve stimulation (PNS) induced by breast gradient coils. The numerical calculations are based on an efficient, quasi-static, finite-difference (QSFD) scheme. The application of the human body to the calculations of induced current densities and electric fields from applied low frequency magnetic and electric fields is described. The spatial distributions of the induced electric field and their gradients are calculated. This study provides some insight into the spatial characteristics of the induced field gradients for PNS in MRI, which may be used to further evaluate the sites where magnetic stimulation is likely to occur and to optimize gradient coil design.
The Application of Single Vector Sensor in Direction Tracing of Water-Entry Object
Authors: Xiao Di , Zhang Lan Yue
Published: July 2013

Water-entry signal was important to broadcast the water-entry object. The vector sensor could gain the pressure and particle velocity signal, so the azimuth angle of water-entry signal could be estimated by single vector sensor. The complex sound intensity method was applied in vector signal processing in azimuth estimation. The estimated deviation in different SNR was give out via simulating experiment. The method was used in the experiment on the lake and was proved to be effective.
Peer-to-Peer Cooperative Positioning between GNSS Receivers
Authors: Chang Qiang , Li Qun , Hou Hong Tao , Zeng Xiang Hui
Published: July 2013

Global navigation satellite system (GNSS)-like the Global Positioning System (GPS) and the future Chinese Beidou system-can deliver very good position estimates under optimum conditions. However, especially in critical positioning scenarios like urban canyons or indoor environments the performance loss would be very high or GNSS based positioning is even not possible. Based on the concept of Cooperative Positioning in acquiring real-time positioning information of mobile robots, GNSS Peer-to-Peer Cooperative Positioning (P2P-CP) technology is proposed to overcome the shortage of GNSS positioning. Terrestrial ranging and communication modular are equipped with GNSS receivers to construct real-time CP network. The terrestrial ranging and communication modular respectively used for distance measurement and communication between nearby GNSS receivers, distributed algorithms are applied to fuse pseudorange and neighbors nodes distance to calculate the nodes position. Current research results of GNSS CP show that this new positioning strategy gets equal or better precision with less time cost compared with Assisted GNSS (AGNSS).
Design and Implementation of IOT-Based on Remote Atmosphere Quality Supervisory System
Authors: Wang Yi , Hu Rui , Deng Hui , Wang Feng
Published: July 2013

Air quality monitoring is an important application in Internet Of Things (IOT). In this paper, a design and implementation scheme of air quality monitoring system for industrial parks has been put forward. After the introduction of its applications, an integral project is presented, including system architecture, system functions and system deployment. The paper finally comes to a conclusion that the operation of the system deployed in Qujing modern industrial park is proved stable and reliable.
Optimal MLAT Tracking Based on Improved Simulation for Airport Surveillance
Authors: Lu Yu , He Dong Lin , Yao Hui
Published: July 2013

MLAT (Multilateration) is becoming one of the leading techniques in the airport surveillance. It locates the positions of aircrafts by the TDOAs (Time Difference of Arrivals) of signal from the aircraft to the different remote stations. In views of the influence from the geometric relation and the clock error among different stations, an improved simulation is proposed to estimate the measurement error for the optimal tracking. The model of simulation takes both the GDOP (Geometric Dilution of Precision) and TOA (Time of Arrival) error into consideration. Experiment results show that compared with the traditional simulation method, the improved simulation is more accurate and is able to be used in the practical application.
Research on PID Neural Network Control System of Temperature for Agricutural Film Unit
Authors: Feng Yue , Qiao Mei Xia , Zheng Shuai
Published: July 2013

The temperature of agricultural film unit affects the plastic film directly. Since unit heating process has the characters of time delay, nonlinear, time-varying and strong coupling. It is difficult to create a mathematical model structure of plastic melting process. Thus, temperature control is very difficult. This paper presents decoupling control strategy and corresponding control algorithm based on PID (proportional-Integral-differential) neural network. Proportional, integral, differential neurons form a three-layer neural network. This design gives full play to respective advantages of PID control and neural network, and takes advantage of BP neural network to establish the dynamic model of system.
Minimum Energy Control Based on Vector Parameterization for Four-Wheel Drive Omni-Directional Mobile Robots
Authors: Chen Jian Ping , Wang Jian Bin , Yang Yi Min
Published: July 2013

Four-wheel drive omni-directional mobile robots (FDOMRs) usually carry limited energy and have to accomplish their tasks before deadlines. Energy saving can be achieved in several ways, and one of that is determining a velocity trajectory. To find the minimum energy trajectory, a practical cost function is chosen as the total energy drawn from the batteries. However, the cost function is a free final time optimal control problem, which is usually complex and has no explicit solution. A normalized time variable is used to transform the original problem into a fixed final time optimal control problem, which is solved by using uniform control vector parameterization. Various simulations are performed and the consumed energy is compared to the normal control method that without minimum energy consumption control. Simulation results show that the energy saving is much more compared to the traditional control, the operational time of the FDOMR with given batteries is lengthened and the efficiency of battery is improved.
Application of TiAl(CN) Metal Ceramic Coating by Reactive Nitrogen-Arc Cladding on Stubble-Cleaning Cutter
Authors: Zhu Ling Xiao , Hao Jian Jun , Gao Liang , Ma Yue Jin , Zhao Jian Guo
Published: July 2013

The metal ceramic coating of TiAl (CN) by nitrogen-arc cladding technology was produced on the surface of 45#steel.The phase composition of coating was analyzed with X-ray diffractometer; The bonding state and microstructure were observed with scanning electron microscope; The microhardness was examined and the wear resistance of the metal ceramic coating compared with that of 60Si2Mn steel treated by quenching and tempering was tested by abrasive tester as well. The results indicated that the TiAl (CN) ceramic particle synthesized in-situ is distributed dispersively in the cladding and the size is under 3 um. The excellent bonding between the coating and 45# steel substrate is strengthened by the strong metallurgical interface; the coating is uniform and continuous. The maximum microhardness of cladding is HV0.21820 and the abrasive performance is better than 60Si2Mn steel treated by quenching and tempering. The simulation test results showed that the cladding is good, and can be used to the repair and remanufacture for wearable parts of stubble-cleaning cutter.
Hardware Design and Realization of Synthetical Altimeter Detecting-Instrument Based on Intellectronics
Authors: Shi Yan Li , Ren Lin , Song Yang , Yu Hai Xia
Published: July 2013

The altimeter is a very important measuring-height equipment, so the test of the altimeter is the important content to function measurement of the plane navigation system, synthetically altimeter detector can make some type altimeter test standardized, this paper introduces the overall design and system composition of the altimeter detector, it is focused on emphatically the hardware design procedure of the synthetical altimeter detector, this instrument can reduce about 30% work load of attendants, in the actual application the altimeter detector has advantages, such as good military and economic benefits.
The Application Research of Coal Seam CO Source Identification Based on the D-S Evidence Conflict
Authors: Nan Feng , Li Yang
Published: July 2013

In the paper, we introduce the distance function of K-L information to replace the conflict coefficient in order to solve the constraint problem of D-S evidence theory in information fusion and achieve the feature recognition aggreation of Multi-source information under the conflict condition. Simulating results show that: the effective conflict identification of K-L information distance can complete the application constraint of D-S theorys synthetic rule, obtaining the optimized convergence results for synthesis of normal conflicting evidences, isolating the highly conflicting evidence.
Effect of Bracing Elements on Mechanics and Shear Strength of Exterior Beam-Column Joints in Moment Resisting Frames
Authors: Appa Rao G. , Kanaka Durga S.
Published: July 2013

Beam-column joint in moment resisting frames is very crucial particularly for non-seismically designed cases, which requires strengthening by various methods. This paper reports on shear strength reduction in exterior beam-column joints using haunch elements. Numerical analysis has been performed on exterior beam-column joint of moment resisting frame with and without a haunch element using SAP software. A parametric study has been performed for optimum haunch location (L) along the beam length (Lb) (10%, 12.5%, 15%, 20%, 25%, 40% and 50% of Lb) and the angle of the haunch element along column axis (15°, 30°, 45° and 60°). It has been observed that the optimum location of the haunch element is at 0.2Lb along the beam at an inclination of 45° with the column axis. The analysis results show that the addition of haunch element significantly reduced the joint shear strength.
Redundant Driving Underactuated Robot Finger for Powerful Grasp
Authors: Li Qi , Zhang Wen Zeng
Published: July 2013

In tradition, one underactuated robotic finger with two or three joints always utilizes only one actuator for self-adaptive grasp, which results in quite weak grasping force because there is only one motor and the motor is so small in size so that it can be embedded into the phalange of the robot finger or the palm of the robot hand. Aiming to overcome the weakness, this paper proposed a novel robotic finger with redundant driving, called RD finger, which can produce sufficient grasping force through increasing a redundant motor and keep original characteristic of self-adaptive grasp. A special single direction transmission mechanism is designed in the finger to make two motors seem like one motor and prevent interference between the first motor and the second motor. The grasping process of the RD finger is close to traditional underactuated finger but there is up to double grasping force. One kind of the RD finger is designed in detail with coupling and self-adaptive grasping mode, which is composed of two motors, bevel gears, a pulley-belt transmission, a single direction transmission and a spring. In addition, the RD finger is compact, easy to control, low in energy consumption, is able to provide wide range of grasping force, and is therefore suitable for humanoid hands.
Control Scheme of a Brushless Doubly Fed Induction Machine for Stand-Alone Generator Systems
Authors: Zeng Chuan
Published: July 2013

The brushless doubly-fed machine (BDFM) is a new type of induction machine which has different structure and operation principle than a conventional AC machine. In this paper, the electromagnetic relation of BDFM is analyzed, and a stand-alone generator system is presented. Based on the analysis, the characteristic and applicability of scale and vector control strategy is build, both of which realize constant voltage output in stand-alone generator systems of variations load.
A Fast Interpolation Algorithm Based on the Fractal in the Digital Speckle Sub-Pixel Displacement Measurement
Authors: Luo Yuan , Liu Yuan
Published: July 2013

The Digital Speckle Correlation Method is a non-contact in-plane displacement measurement method based on machine vision. The spline, the linear or the bi-cubic interpolation algorithm is often used in the sub-pixel algorithm. The block effect or the edges blurring, however, could occur in these algorithms. Therefore, a fast interpolation algorithm based on fractal theory is proposed in this paper. The results indicate that this algorithm can overcome either the blocking effect or the edge blurring caused by the traditional interpolation algorithm. In addition, with the same sub-pixel accuracy, the shortest time is required.
Developing and Applying the Information Construction Analysis Visualization System
Authors: Song Zhan Ping , Ta La
Published: July 2013

Tunnel information construction is more and more concerned because of the uncertainty and complexity of geological body. Based on the back analysis principle of tunnel and intelligent science arithmetic, the paper self-developed tunnel information construction analysis visualization system by Visual C# platform and VTK techniques in order to the confliction between tunnel construction expending too much time and the construction period demand. Firstly introduced global optimization method-Difference Evolution (DE) Algorithm and combined it with finite element method (FEM) in order to back analyze the surrounding rock parameters. Then constructed the total software framework and developed the program of the information construction analysis intelligent visualization system. Applied the system to the Dalian Metro tunnel engineering construction and got satisfied results. The soft system developed by the paper has active meaning to promote the intelligence, visualization and automation of the tunnel construction.
Optimal Due-Window Assignment Based on Common Flow Allowance under Linear Deteriorating and Resource-Dependent Processing Times
Authors: Luo Cheng Xin
Published: July 2013

This paper studies a due-window assignment problem on a single machine. The job-dependent due-windows are obtained by the common flow allowance criterion. We assume that the processing time of a job is a linear function of its starting time and decreasing function of the resource amount assigned to it. The objective is to find the optimal size and location of the due-windows, the sequence of jobs and resource allocation scheme to minimize a cost function based on the window size and location, the earliness and tardiness of jobs and resource cost. We propose an algorithm to solve the problem.
Borehole Stability Logging Analysis in Zhenjing Oilfield, Ordos Basin, China
Authors: Ran Li Min , Pan He Ping , Li Gong Qiang , Zhao Yong Gang
Published: July 2013

There is very important practical significance for borehole stability to oil and gas drilling and production. When the mud density is too large (mud column pressure too high),the formation will be fractured. When the the mud density is too low (mud column pressure too low), the borehole wall will be collapsed, and hole will be enlarged. In this paper, the fracture pressures of the formations were determined by using the maximum tensile stress theory. The formation collapse pressures were determined by using the Coulomb - Moore intensity criteria. According to the fracture pressure and collapse pressure to evaluate the borehole stability. The two wells stability evaluation examples were given, and the borehole security mud window were calculated.
A Novel Method for Hull's Three Dimensional Deformation Measurement
Authors: Liu Xin Ming , Zhang Yao Yu , Feng Xiao Yong , Wang Qian Xue
Published: July 2013

In this paper, a novel method for hulls three-dimensional angle measurement is presented. For the measurement of the transverse twist angle, a method based on moiré fringe is proposed, for the lengthways flexibility and course flexibility angle the conventional optical sensor method is applied. The principle of the measurement is discussed in detail. To verify the accuracy of the proposed method, both static and dynamic experiments are carried out. Results show that in the static states, the accuracy for them are smaller than 5'', in the dynamic states, the accuracy for them are smaller than 10''.
ANSYS Simulation Technology of Pipeline Magnetic Flux Leakage Inspection
Authors: Yang Li Jian , Zhang Sen Lin , Gao Song Wei
Published: July 2013

In order to solve the need of the oil and gas pipeline defect quantification in the real-time online defecting, magnetic flux leakage inspection method was applied to oil and gas pipeline inspection. According to the basic theory of the electromagnetic field, finite element solution of electromagnetic field and ANSYS electromagnetic field calculation theory, using the function of ANSYS 's simulation and calculation for magnetic field, three-dimensional finite element model of the oil and gas pipeline defect was built up. Through simulating, the relationship between defect signal and defect size was found, the optimal distance of the hall sensor lift-off value was verified, the best magnetization of leakage magnetic field was discussed, and various factors to influence the magnetic flux leakage signal is analyzed.
Analysis of the Measurement Conditions of Heavy Metal Enriched on the Filter Membrane Using X-Ray Fluorescence
Authors: Zhang Wei , Zhang Yu Jun , Chen Dong , Zhang Rong , Yu Xiao Ya , Gao Yan Wei , Wang Chun Long , Liu Jin , Dai Pang Da , Zhao Nan Jing
Published: July 2013

In this paper, the measurement conditions of heavy metal enriched on the filter membrane using X-ray fluorescence were talked about. According to the heavy metal enriched on the film, the specific parameters were analysed. Through many experiments, the suitable parameters were decided. In order to excite mainly heavy metal in air, the excitation voltage should be not less than 30kV. The excitation current should be between 20μA and 60μA. The measured distance should be between 4mm and 15mm. The best choice of pulse shaping time is around 6.4μs. These parameters setting should have very good application value in air heavy metal measurement.
Research of Beta-Endosulfan Based on THz Time-Domain Spectroscopy
Authors: Liu Zhe , Li Xian , Yue Fei Heng , Feng Lu , Cai Jin Hui , Kang Xu Sheng , Huang Ping Jie
Published: July 2013

THz spectral properties between 0.2-1.5THz of beta-endosulfan, one of the persistent organic pollutants (POPs), are investigated based on the THz time domain system. Part of the characteristic absorption peaks are theoretically analyzed by Dmol3 modular program. The experimental results show that the average refractive index of beta-endosulfan in the THz waveband is about 1.005 and characteristic absorption peaks exist at 0.67, 0.80, 1.03, 1.14, 1.26 and 1.46THz. The absorption peaks at 0.67THz and 1.03THz have a good match with the theoretic absorption peak positions which appear at 0.72THz and 1.07THz calculated by Dmol3. The peaks at 0.67THz and 1.03THz may be caused by the torsion in B and C direction of beta-endosulfan crystal lattice, along with the translation in A direction. Compared with the experimental results of alpha-endosulfan, it can be seen clearly that these two isomers have completely different absorption peaks. For further it indicates that terahertz time domain spectroscopy (THz-TDS) has great application value in identifying isomers.
Multi-Sensor Data Fusioning of Monitoring Deep-Hole Drill Bit
Authors: Xu Xu Song , Sun Zhi Ying
Published: July 2013

For the deep-hole drilling bit works in closed or half-closed condition and the cutting situation can not be observed and controlled directly, it brings a big challenge to monitor the cutting tools and the cutting process. To solve the problem, improved testing methods and data processing techniques were developed. A new condition monitoring method of deep-hole drilling based on multi-sensor data fusion was discussed in the paper. The signals of vibration and cutting force were collected when the condition of deep-hole drilling on stainless steel was normal and abnormal. Four eigenvectors were extracted on time-domain analysis and frequency-domain analysis of the signals. Then the combined four eigenvectors were sent to BP neural networks data fusioning center. The fusioning results indicate that cutting force signal can reflect the condition of drill bit better than vibration signal and multi-sensor data fusion is superior to single-sensor.
PQ-Modified Glassy Carbon Ceramic Electrode Based on Sol-Gel Chemistry and its Electrocatalytic Reduction of Iodate
Authors: Sun Dan Zi
Published: July 2013

9, 10-Phenanthrenequinone (PQ) supported on glassy carbon microparticles by adsorption was dispersed in methyltrimethoxysilane (MTMOS) derived gels to yield a conductive composite which was used as electrode material to fabricate a PQ-modified glassy carbon ceramic composite electrode. It shows good electrocatalytic activity toward the reduction of iodate and could be used as an amperometric sensor for the determination of iodate in table warter.
The Research of Contact-Less Power Transmission System Operating in the Closed High Hydraulic Environment
Authors: Zhang Shu Wen , Xu Ming Long , Feng Bo , An Zeng Yong
Published: July 2013

In this paper, a new type of AC-AC contact-less power transmission system based on the specific engineering environment is produced. A new loosely-coupled transformer structure and its working type are developed. Besides, a new set of high efficient based on the qusai-resonant technology is realized. Theoretical calculation and simulation software are used to prove its feasibility; a series of experiments are completed. Finally, the contact-less power transmission system functions well.
Vibration Active Control Based on Torque Actuator of Piezoelectric-Stack
Authors: An Zeng Yong , Xu Ming Long , Tao Fu Yang , Feng Bo
Published: July 2013

Combining with the advantages of the piezoelectric material, positive and negative torque actuator using dual piezoelectric-stack is developed for vibration active control of annular flexible structure in this paper. The working principle of the actuator is described, and the output performance of the actuator is tested in this paper. Also the actuator is applied successfully to the vibration active control of annular flexible structure.
Wavefront Reconstruction Using Two In-Line Holograms
Authors: Rong Lu , Wang Da Yong
Published: July 2013

The reconstruction quality of in-line holography suffers from the superposition of twin images, which blurs the details and degrades the quality of the object wavefront reconstruction. We present an iterative reconstruction method to eliminate twin image and truthfully retrieve the object wavefront. This algorithm has a better elimination effect and more rapid rate of convergence than other phase retrieval methods. An experimental setup was built with dual cameras recording the holograms simultaneously, thus this technique can be employed for investigating fast dynamic phenomina. The effectiveness of the proposed method is validated using different samples.
The Innovation of Miniaturized Continuous Efficient Refuse Disposal System
Authors: Zhou Ke , Fan Wen Qiang , Fu Yang , Yuan Wen Pu , Lin Xiao Xiao
Published: July 2013

There are mainly three measures for waste disposal: combustion, landfill and composting. Among them, combustion is believed to be the most efficient way. It is the most convenient way to reduce the amount of waste at utmost. Meanwhile, it is not only harmless, but contributes useful heat source. Therefore, most of developed countries employed combustion in waste disposal. Today, China is contributing 30 percent of the waste in the world; however, landfilling is still the most common way for waste disposal. To change this situation, the government of China has taken steps to generalize the use of combustion in waste disposal. Besides the policies by the government, another exciting thing is that the Beijing Honyuanmao CO. Ltd. Of environmental protection machinery successfully invented an advanced miniaturized continuous efficient refuse disposal system. after three years investigation. This invention finds a new way to develop environment friendly society, green economics and cyclic economics.
Selection of B-Spline Degree on Optimal Design of Mechanism
Authors: Lin Chang Jun , Qiu Hua , Sun Jian Qiao , Ozaki Hiroaki
Published: July 2013

The degree is an important parameter for B-spline. In this paper, as one example of optimal design in mechanism, the optimal design of the cam curve to control the residual vibration of the follower output for an indexing cam mechanism is taken and the effect of the degree of the B-spline to describe the cam curve on the optimization performance is discussed by obtained results.
Surface Plasmon Polaritons Modes of Silver Nanowire
Authors: Pan Chong , Yang Shu
Published: July 2013

Recently,research of surface plasmon polaritons in metal has been hot.in this paper, we study the surface plasmon polaritons modes in silver nanowire, explore the way of different excitations affect modes. and explore the impact of different physical parameters for the mode ratio.
Study on Key Technologies of One Radar Emulation System
Authors: Gao Kai , Shan Xian Ming , Liu Yang Jun , Tian Zhao Chun
Published: July 2013

Visual emulation Technology is one of the important parts of VR systems. It takes charge of Vision issue in VR systems, and is the most important fact to affect the immersive of the system. To deal with the difficulties of one type artillery radar, such as limited training field, serious radar loss and expensive training outlay, a training simulator system is realized based on scene simulation technologies. Composition structure, function module and key technologies of the system are discussed first. This system is then developed with tools of Multigen-Creator, Vega, VC++6.0, and a living virtual battlefield environment is created. The emulation pictures are listed, the results show that the emulation system simulates operation process of artillery radar livingly and can meet the requirements of real time emulation.
Design of Transmission System Optimization Software for Off-Road Vehicle
Authors: Shang Gao Gao , Lu Meng Ting
Published: July 2013

Based on a technique of mixed programming with MATLAB and C#, the transmission parameters optimization software was developed to improve the power performance of off-road vehicle. The power loss rate and the starting acceleration time were chosen as objective function, and the requirements of the vehicle performance and the gearbox ratio interval was used as constraint conditions. The result of verification example showed that both objective function values are reduced after optimization and the effect of optimization with power loss rate is more significant.
Study on the Ultra-High Voltage DC Insulators Long-Term Running Research Platform
Authors: Lü Fang Cheng , Qin Chun Xu , Liu Yun Peng , Guo Wen Yi
Published: July 2013

This paper established the Ultra-High Voltage DC Insulators Long Term Running Research Platform in the National Engineering Laboratory for UHV Engineering Technology (Kunming). The research platform included the following parts: the long-term live examination field for UHV DC equipments, the UHV DC insulators, the leakage current on-line monitoring equipments, the wireless automatic weather station, the infrared monitoring and the ultraviolet monitoring system. The data were real-time processed by the software of the UHV DC insulator information synthetic evaluation system.
Experimental Study of Modal Disturbance and Rotating Stall Distribution
Authors: Lai An Qing , Hu Jun , Li Liang , Luo Ju
Published: July 2013

To execute stall active control technology effectively and make clear of stall inception induced by modal disturbance, this paper carries out the correlative research on modal disturbance and rotating stall on the two-stage low-speed axial compressor. The results indicate that the stall inception of the compressor is modal style and the modal oscillation propagates at 38% rotor speed while the stall cell propagation speed is 42% rotor speed. The phase angles of modal oscillation and rotating stall along the axial direction are different, but their trajectories are both similar to the blade passage shape. The stall mechanisms of modal-type and spike-type inceptions are different. It doesnt appear that leading-edge tip clearance flow spillage blow the blade tip while the modal-type stall formation.
Analysis of the Sports Biomechanics about Difficulty Elements of Group C in Competitive Aerobics
Authors: Wang Mei Hong
Published: July 2013

The difficulty elements of group C has become an important part of the competitive aerobics with its development. The author is trying to propose a scientific method as a theoretical foundation for coaches to train. The way is to analyze both the movement time-phase about difficulty elements of the group C, and its sport biomechanics in 3 stages, which are take off, flight and landing.
AC-25 Asphalt Mixture Dynamic Stability Criteria
Authors: Li Chuang Min , Liu An , Chen Yun
Published: July 2013

With the publication of Standard test methods of bitumen and bituminous mixtures for highway engineering " in 2011, the common asphalt mixture rutting test can be carried out in accordance with the T0719-2011 in China. But in our country, the current " Technical specifications for construction of highway engineering asphalt pavement " published in 2004 describes that the nominal maximum size of more than 19mm dense-graded asphalt concrete or asphalt treated permeable base is not suitable for carrying out specimens rutting test in accordance with the size of 300mm× 300mm ×50mm, so there is no corresponding dynamic stability requirements to the commonly used AC-25 type asphalt mixture in pavement layer in China. Combined with the Dao-He expressway pavement structure design and used the T0719-2011 method of AC-25 type different thickness rutting test, the relationship between the rutting specimen thickness and the dynamic stability is established. With reference to the requirements of asphalt pavement construction specifications and pavement structure layer on high temperature stability, the 8cm thick AC-25 common asphalt mixture dynamic stability criteria is put forward. Analyzing on AC-25 with No. 50 pure asphalt mixture dynamic stability test data, the dynamic stability requirements is put forward as validation for AC-25 asphalt mixture dynamic stability criteria in Dao-He expressway.
Analysis of Three-Dimensional Numerical Simulationin Rlue of the Migration Rule of Overlying Strata in Thick Seam Mining with Soft of Daping Mine
Authors: Xu Meng Lin , Zhao De Shen
Published: July 2013

In order to delve better what research methodology of height of water conducted fissure zone are, especially in mining of thick coal seam with soft, 3-D numerical simulationin was used to S2S9 face of Da Ping mine, it reveals the damage movement rule of overlying strata in mining roof-coal in "Three Soft" coal seam in the end . Thus it confirms the height of the water flowing fractured zone and tests the simulation result by the theoretical analysis and simple hydrology observation result. it provides a new idea for the application soft overburden in extra- thick seam mining technology.
Building Electronic Commerce Recommendation System Based on Ontology Learning and BP Neural Network
Authors: Xu Hong Sheng , Tan Qing
Published: July 2013

Electronic commerce recommendation system can effectively retain user, prevent users from erosion, and improve e-commerce system sales. BP neural network using iterative operation, solving the weights of the neural network and close values to corresponding network process of learning and memory, to join the hidden layer nodes of the optimization problem of adjustable parameters increase. Ontology learning is the use of machine learning and statistical techniques, with automatic or semi-automatic way, from the existing data resources and obtaining desired body. The paper presents building electronic commerce recommendation system based on ontology learning and BP neural network. Experimental results show that the proposed algorithm has high efficiency.
Semantic Reasoning-Based Chinese Recipe Recommender System
Authors: Shu Qiong , Chen He Ping , Gu Jin Guang
Published: July 2013

For the blank of the recommender system for chinese recipes, this paper uses OWLS-WSDL to build a semantic reasoning-based chinese recipe recommender system. This system through the tool of Protégé to establish the ontology of chinese recipes and then add rules for ontology reasoning. On this basis bring out a catering algorithm, using Euclidean distance and Jaccard to calculate the similarity between the dishes. According to the similarity as well as user preference, provides a quick means of siding dishes for users.
Quantum Algorithm for the Choice for the Site of the Public Transport Station Problem in Cloud Computing Environment
Authors: Mai Gui Ying , Li Yue Guang
Published: July 2013

In this paper, according to the characteristics and influence factors of the site of the public transport station problem, a mathematical model of the urban public transport station problem was established. Cloud computing and Quantum Algorithm was used to solve the model, with Hezuo city of Gansu Province as example, the algorithm was experimented and the experimental results show that the algorithm can acquire the optimal solution that is accord with the practice, moreover, the algorithm has much more practical.
Design of the Security Component in Reconfigurable Network
Authors: Zhang Fan , Zhang Xing Ming , Song Ke
Published: July 2013

New threats to and requirements of security come forth endlessly while the network technology progresses continually. Security equipment has little adaptive capacity in the existing rigid network. It has bad influence on network security in Mainland China. A reconfigurable security component is designed in this paper. It can fit the coming requirements of network development in the future. A prototype of this security component is implemented and analyzed.
Construction of Adolescent Digital Reading Assessment
Authors: Chang Kuei Lin , Huang Chi Jung
Published: July 2013

The purpose of this study was to construct the Taiwan Adolescent Digital Reading Assessment (TADRA) and further to examine its validity. Researchers took the structure of the PISA 2009 electronic reading assessment (ERA) and Leus (2004) online reading literacy as references to develop this tool which included three aspects: access and retrieve, integrate and interpret, and reflect and evaluate. Assessment material taken was from digital archive resources which possess high academic and educational value. The assessment system was developed on Internet/www platform, and runs and scors through ASP.NET. A pilot study was carried out in a junior high and high school in Taiwan. A total of 415 students, 216 8th graders and 199 10th graders, participated in the pilot study. Academic achievement of subjects was collected for preliminary testing TDARAs validity. After adapting classical testing theory (CTT) and item response theory (IRT), the results shown that P value is between 0.36-0.05, item difficulty parameter b is between 0.06-0.79, item discrimination is good (D=0.33-0.34); correlation coefficients between TADRA and Chinese is between 0.45-0.50, which is highest among all schools grades. This pattern demonstrates sensible supporting evidence for convergent and discriminant validity. Thease finding also indicate that basic searching ability is a requirement for online reading, hence differentiating online and offline reading.
A Clock Synchronization Algorithm for TTEthernet
Authors: Li Qing Ru , Han Wei , Wang Hong Chun
Published: July 2013

This paper presents an approach of Time-Triggered Ethernet (TTEthernet, TTE) clock synchronization. Firstly it introduces the roles of each device in clock synchronization algorithm, then analysizes the synchronization steps and their two sub-algorithms:permanencealgorithm andcompressedalgorithm. At last it presents the process of clock correction in different devices.
Research on Product Relational Design for Collaborative Working Environment
Authors: Zhang Bao Yuan , Xi Ping , Tang Jia Peng , Huang Bo Yuan
Published: July 2013

Collaborative design is a significant method to improve the efficiency of complex product development. In order to reinforce the update and synchronize mechanism of the collaborative working environment, relational design techniques are studied. Taking airplane wing as an example, the relations in product design, manufacturing and measurement stages are analyzed and classified into three types: datum reference relation, parameter relation and non-geometric relation. Then the creation and update methods of the relations of each type are discussed respectively, and they are summarized to a uniform user operation pattern. Finally, a relational design tool is developed and applied in a case study, which validates the feasibility of our methods.
Se Nanoparticle Resonance Scattering Method for the Determination of Trace Vitamin C
Authors: Liu Qing Ye , Zhang Biao Ming , Liang Ai Hui
Published: July 2013

In the medium of hydrochloric acid, Vitamin C (VC) reacts with Se (VI) to form Se particles. The particles exhibit four resonance scattering peaks at 340, 400, 470 and 520 nm. VC concentration is proportional to the I340nm in the range of 0.05 to 4.0μg ml-1. Based on this fact, a new resonance scattering spectral (RSS) method has been proposed for the determination of VC with a detection limit of 0.01μg ml-1. This method was used to determination of VC in pharmaceuticals, synthetic samples with satisfactory results.
Response of the Toxic Cyanobacterium Microcystis aeruginosa to Bacteria Signaling Molecules AHLs - Change of Volatile Components Production
Authors: Wei Jin Ya , Li Shui Bing , Xu Zhong Xiu , Han Xiao , Yang Ming Zhi , Chen Xiao Lan
Published: July 2013

N-acyl homoserine-lactones (AHLs) are essential bacteria signaling molecules which regulate many physiological behaviors of Gram-negativebacteria. Previous studies have shown that AHLs can affect the growth and primary physiological processes of the bloom-forming cyanobacteriumMicrocystisaeruginosa. The aim of this study was to examine whether and how the presence of AHLs substances may affect the release of volatile chemicals ofM. aeruginosa. Hydrodistillation and GC-MS were used to extract and analysis the volatile components of cells in exponential and stationary growth stage in normal growth condition and cells in exponential stage with additional AHLs. The results demonstrated that allelopathic chemicals existing in the stationary phase were induced and released when AHLs was added into the culture of cells in exponential phase, which indicated that AHLs may play role in growth state transition and interspecific competition inM. aeruginosavia regulation of production and release of volatile chemicals.
Synthesis, Characterization, and Drug Encapsulation of Hyperbranched Polyamidoamine Modified by β-Cyclodextrin
Authors: Jiang Xiao Long , Zhou Mi , Ye Xiao Feng , Qian Xin
Published: July 2013

h-PAMAM-COOMe and its β-CD derivatives (h-PAMAM-CD) were synthesized step by step via the Michael addition and ester-aminolysis reaction from hyperbranched polyamidoamine (h-PAMAM). The structures of the as-prepared polymers were confirmed by Ubbelohde viscometer, FTIR, and 1H NMR. A series of inclusion complexation formed by β-naphtol in increasing h-PAMAM-β-CD with different concerntration were investigated by UV-vis spectrometer. The result showed that the novel hyperbranched polymer might have potential applications as delivery materials in chemotherapy.
Multi-Label Classifier Design for Predicting the Functional Types of Antimicrobial Peptides
Authors: Wang Pu , Xiao Xuan
Published: July 2013

t has special meaning for drug design as well as basic research to study Antimicrobial peptides (AMPs) because they have been demonstrated to kill Gram negative and Gram positive bacteria, mycobacteria, enveloped viruses, fungi and even transformed or cancerous cells. In view of this, it is highly desired to develop an effective computational method for accurately predicting the functional types of AMPs because it can provide us with more candidates and useful insights for drug design. AMP functional recognition is in fact a multi-label classification problem. In this study, up to six kinds of physicochemical properties value are selected to code the AMP sequence as physical-chemical property matrix (PCM), and then auto and cross covariance transformation is performed to extract features from the PCM for AMP sequence expression; At last, a clever use of Fuzzy K nearest neighbor rule will help identify the multiple functions of a query AMP. As a result, the overall classification accuracy about 65% has been achieved through the rigorous Jackknife test on a newly constructed benchmark AMP dataset.
Soft Measures to Improve the Wind Speed Prediction Capability in Wind Farm
Authors: Yang Ya Lan , Xu Yao Liang , Zhong Shao Shan
Published: July 2013

For decreasing the error of wind speed prediction in wind farm, improvements from the aspects of arithmetic, space and time has been proposed based on the soft sensor. Support Vector Machine as the basic prediction method is used to analyze. MRA-SVM testify the improvement of algorithm can increase the performance targets.The modified model about meteorological information achieves the space continuity and the cascading of turbines profits the time continuity. Based the actual measured data, the calculated result shows that it is feasible to improve the wind speed prediction from the aspects of algorithm, space and time.
3D Visualization Model and Sample Implementation of 0-1 Function on Variant Logic
Authors: Wang Huan , Zhu Jie Ao , Liu Xue , Zheng Jeffrey
Published: July 2013

Random sequences generated by different logic functions play an important role in cryptography. The structure and the special properties of the logic function has been one of the most active areas of research. In order to study the random sequence and its related logic functions, many models have been established, and different advanced tools are applied to make complex data visualization. In this paper, sample logic functions are transferred into variant logic expressions to form a set of measurements. Using selected measurements, a 3D visual model is proposed. Selected 3D visual results are shown their intrinsic 3D spatial characteristics of relevant logic functions respectively.
The AMT Features Extraction from Batch Drilling Step Monitor Signals and its Applications
Authors: Zhou You Hang , Zhang Qiao
Published: July 2013

Angle Measure Technique (AMT) algorithm is proposed to analyze the quality of batch drilling process in this paper. The groups spindle power (SP) signals of batch drilling were preprocessed by the normalization method, and then the AMT was used to extract the scale features of monitor signals from local to global. By the method of Principal Component Analysis (PCA), the dimensionality of these scale features was reduced to obtain a distribution of the step quality of batch drilling. The results indicate that this method can be used for observation of high precision cutting step quality.
Performance Evaluation of Fiber-Optic Dosimeter According to Current-Time Product of Digital Radiography System
Authors: Yoo Wook Jae , Jeon Da Yeong , Seo Jeong Ki , Shin Sang Hun , Han Ki Tek , Hong Seung Han , Kim Seon Guen , Sim Hyeok In , Cho Seung Hyun , Lee Bong Soo
Published: July 2013

A fiber-optic dosimeter was developed using a plastic scintillating fiber, a plastic optical fiber, and a photomultiplier tube for measuring entrance surface dose over the low-energy range which is interested in diagnostic radiology. To evaluate the fabricated fiber-optic dosimeter, the scintillating light signals were measured by changing the current-time product whose values were determined by tube current and irradiation time of a digital radiography system. In conclusion, the trend of scintillating light signals of the fiber-optic dosimeter was similar with that of the entrance surface doses of a commercially available semiconductor dosimeter according to the current-time product.
Summary of Study on the GIS Partial Discharge Detection Technology and SF6 Alternative Gas
Authors: Liu Yun Peng , Wang Zi Jian , Li Yan Song
Published: July 2013

Gas insulated switchgears occupy an important position in the power system. But the partial discharge would occur because of insulation defect, PD will lead to the GIS insulation damage after a long time, and will lead to serious consequences without treatment in time, therefore, the PD detection is particularly important. PD is detected by its secondary physical phenomena, including the phenomena of sound, light, electromagnetic waves and gas decomposition products and so on. At present, many scholars in China and foreign countries have done a comprehensive study on insulation detection technology of GIS and have achieved a large number of results. The author do a detailed overview on the detection technical of GIS insulation state, including GIS platform and the simulation of typical insulation defectspartial discharge detection methods, SF6 alternative gas and pattern recognition. These works provide a valuable reference for follow-up study of GIS.
A Method Based on Wavelet Transform for Mineral Spectral Characteristics Extraction
Authors: Li Han Bo , Zhao Ying Jun , Zhang Dong Hui , Pan Wei
Published: July 2013

The basic principle of the wavelet analysis method to extract the mineral spectral absorption characteristics is summarized and different wavelet bases,wavelet decomposition scale extraction effect are analyzed in this paper. Then, the algorithm of mineral spectral absorption characteristics based on wavelet spectral analysis is provided and a large number of experiments are carried out using the spectrums of field rock mineral. Experimental result shows that such a method is less affected by original signal noise and depict the parameters of the mineral spectral absorption feature more precise, which is an ideal spectral feature extraction method compared with the traditional mineral spectral absorption feature extraction method.
RFID Localization Based on the Optimal Geometric Distribution Model
Authors: Yu Xiao Lei , Ji Yu Yu , Wang Dong Hua , Yu Yin Shan
Published: July 2013

In order to improve the performance of localization using RFID technology and to reduce the localization error, Fisher information matrix including the state parameters was adopted to evaluate the systems performance. The proper placement of reference tags was analyzed to improve the localization accuracy of RFID system. The results of computer simulation show that we can determine the optimal geometric distribution model of reference tags and the optimal distribution model is not unique according to the characteristics of the geometric distribution. This work is significant for improving the localization accuracy of RFID system.