bluuebunny/crossref_metadata_2025 huggingface dataset:
Analysis on Dynamic Accuracy Appraisal for Optical Theodolite
Authors: Gong Zhi Hua , Duan Peng Wei , Liu Zhi Xue , Lv Hai Dong
Published: May 2014

A method of dynamic accuracy appraisal for optical theodolite is proposed in the paper. Its mathematical model and solution method are deduced. Then, this appraisal method is verified through the simulation. The results suggest there are many advantages in accuracy and reliability to appraise dynamic accuracy of optical theodolite with the method proposed in the paper. In addition, the method is easier and conducive to engineering applications.
Area Measurement System Model and its Application
Authors: Wang Shu Ying , Wang Yi
Published: May 2014

The integral system model is designed in this paper, based on the principle of equal area. This paper introduces the structure of the model, analyses the main parameters in the system and describe the working principle of the system, combining with the question of abnormal integral, this paper gives concrete application method.
Polynomial Interpolation Sub-Pixel Edge Detection Method Based on Improved Canny Operator
Authors: Yu Kun Lin , Xie Zhi Yu
Published: May 2014

According to the shortcoming of traditional Canny edge detection algorithm is sensitive to noise and low positioning accuracy, this paper proposes an algorithm of Polynomial interpolation Sub-pixel edge detection based on improved Canny operator: We first use improved Canny operator edge detection algorithm to extract rough image edge, then use the quadratic Polynomial interpolation to calculate on the rough extraction edge, finally refine the edge image. Experiments show that the improved method is better than the traditional detection method can accurately locate the image edge.
An Orthogonal Experimental Study of WEDM-HS of Particle-Reinforced 6061 Al Matrix Composites with 20-Vol% Al2O3
Authors: Liu Jiang Wen , Wu Yong Zhong
Published: May 2014

An investigation has been made into the machining feasibility when wire electro-discharge machining with an extremely high travelling speed of wire electrode (WEDM-HS) has been employed to process particle-reinforced 6061 Al matrix composites with 20-vol% Al2O3 (20ALO). And in this study, for the water based emulsion is used as working liquid, there exists an electrochemical effect. And thus, the EDM spark can operate under a relatively large spark gap size condition, and this would be helpful for the removal of the loosen particles and the machined debris. In this study, the material removal rate (MRR) has been examined. Since there are many factors that can influence the MRR during the wire electro-discharge machining process, in order to determine which factor has the most significant effect on the MRR and to obtain the optimal machining parameters, the relative importance of the various machining parameters on material removal rate was analysed by employing an orthogonal design. The results of the orthogonal analysis show that to obtain a high MRR for WEDM-HS machining of 20ALO materials, the duty cycle has the most significant effect on the MRR among current, pulse duration and duty cycle. And the impact of significance for the different factors follows the sequence of duty cycle > current > pulse duration. And under the experiment condition of this study, a duty cycle of 1:4, a current of 5A and a pulse duration of 32μs is the best arrangement for the MRR.
Automatic Conversion Method of the Requirements Specification Verification for CTCS Level 3
Authors: Zhou Yu Ping , Zhao Lin , Liu Jin Tao
Published: May 2014

Chinese Train Control System Level 3(CTCS-3) is a typical complex cyber-physical system which connects the control center, the station and the train. In order to ensure the friendly communication between the different manufacturers equipment, the high reliability is required by the CTCS-3 system. The reliability of a system can be tested with the formal verification method and a lot of formal tools have been developed, such as SPIN, VIS and NuSMV. In this paper, we describe the modeling techniques and abstractions of the control process. The required assembly unit has been specified as extended class. The required behavior has been specified as extended state machine diagrams and translated to temporal logic properties. Then, we propose a method to simplify the steps which transfer a UML model into a formal model. Moreover, the transition can be implemented with development language, where its result-the formal model-can be run by the formal tool and return an analysis result. At last, we take the Radio Block Center (RBC) Handover of CTCS-3 as an example, and the experimental results show the validity and feasibility of this method.
Research on the Positive Pressure Ventilation Control System of Intelligent Henhouse
Authors: Wang An Min , Huang Kai , Zhu Jian Xin
Published: May 2014

The internal environment of the henhouse has a direct effect on the health of the chicken. Keeping an appropriate and effective ventilation of the henhouse is an important means to maintain a good environment for the better production of the chicken. To achieve that, we make a control scheme. In summer, the temperature is high, we use the negative pressure ventilation; when the temperature is low in winter, we use the positive pressure ventilation. We hence designed a positive pressure ventilation device. In the device, the SCM controls the number of the fans to work and the time and power when they work. Eventually, we realize the intelligent control of the device to guarantee an appropriate internal living environment for chicken and the research was going on the henhouse.
Research of Multiplex Smart Responder Design Based on the Virtual Instrument Technology
Authors: Wang Yuan , Ding Xue Yong , Wang Lian Sheng
Published: May 2014

In this paper, introduces a multiplex smart responder based on the virtual instrument technology. The programming language Laboratory Virtual Instrumentation Engineering Workbench (LabVIEW) is used and the NI Educational Laboratory Virtual Instrumentation Suite II (NI ELVIS II) platform is chosen as target device in designing this responder. The control kernel of this responder is LabVIEW program, it can realize lots of functions, such as adjusting question time and answer time, etc. The experiment proves, this responder is advantageous to have short design period, high reliability, easy operation and maintenance, and be helpful for user in the field of virtual instrument technology.
An Adjustable Integrated Pointing Device Driver to Help People with Disabilities Improve their Computer Pointing Efficiency
Authors: Shih Ching Tien , Shih Ching Hsiang
Published: May 2014

In this paper we propose a novel Adjustable Integrating Pointing device Driver (AIPDD) using software technology to redesign mouse driver to integrate the functions of commercial pointing devices to help them to effectively utilize commercial pointing devices to operate computers. In contrast with the latest studies, the software-based AIPDD has the following benefits. (a) It does not require additional hardware cost and circuit preservation. (b) It supports all commercial pointing devices with standard interfaces of a computer, including PS/2, USB and wireless interfaces. (c) It can integrate unlimited devices simultaneously. (d) It is adjustable in real time. In summary, the AIPDD has the benefits of flexibility, low cost, high efficiency and high device compatibility.
Keywords: Disabled, Computer pointing device, Mouse Integrate pointing device driver
Behavior of Layered Double Hydroxides Having Different Divalent Transition Metal Groups
Authors: Mamat Mazidah , Tagg Tei , Khairul Wan Mohd , Abdullah Mohd Aidil Adhha , Mohd Tahir Norhayati , Jubri Zaemah , As'ari Rosazlinnani A.
Published: May 2014

The layered double hydroxides (LDHs) with different divalent transition metal groups and nitrate as a counter anion were investigated. Three d-block divalent metals namely cobalt (Co), nickel (Ni) and copper (Cu) were selected. The cobalt/aluminium (CoAN)-, nickel/aluminium (NiAN)- and copper/aluminium (CuAN)-layered double hydroxides were successfully synthesized via co-precipitation method. All the obtained LDHs were characterized by PXRD, FT-IR, ICP-OES, CHNS and TGA/DTG analysis. Interestingly, behavior of the LDHs was dependent on the size of divalent cations. PXRD showed the basal spacing decrease in the order NiAN (0.88nm)> CuAN (0.87nm) > CoAN (0.74nm), and in a linear correlation with the increasing radii of the divalent cations. Similar trend is observed for the weight loss of LDHs, where NiAN has the highest weight loss (53%), followed by CuAN (43%) and CoAN (34%). Further elemental analysis showed the content of trivalent metal cations, nitrate anions and water molecules in the LDHs decrease with the increasing radii.
Design and Analysis for the Handle of the Carton
Authors: Wu Gao Hua , Zhang Yang , Cai Ji Fei
Published: May 2014

In order to solve the problem of low degree of installation automation on handles of the domestic cartons, the problem that the plastic handle is not environmental friendly and the problem that the finished cartons are not convenient for piling, a threading device for the non-woven fabric handle based on a Cam mechanism is designed. Kinematics analysis is done to the simulation model of the handle threading device by utilizing a simulation software ADAMS to obtain the variation curves of the displacement, velocity, accelerated velocity and jerk. The result of analysis shows that the designed threading device of the handle is able to meet with the requirements for non-woven fabric threading technology and it further verifies the validity of the design methods; Moreover, the velocity and the accelerated velocity of the threading device have no sudden change and the jerk values are small so that high speed and high automatic threading can be achieved. Besides, the threading efficiency of the designed device is significantly improved.
Rheology-Based Stability Analysis of Soft Rock Tunnel in Construction Suspension
Authors: Zhang Su Min , Zhu Yong Quan
Published: May 2014

Suspension in tunnel construction usually cause tunnel callapse in weak ground if the suspension time is long. Dongkeling tunnel on Guizhou-Guangxi line being as the engineering background, the indoor rheological experiment and back analysis were performed to obtain the rheological model and parameters of the surrounding rock, and the 3D viscoelasto-plastic calculation model was established to find the evolving rules of deformation at critical locations under two different water contents. It was found that the primary support has little effect on rheology of tunnel work face but on the cross section, and decreasing the water content of the surrounding rock to medium or low saturation level favors the tunnel stabillity greatly for water abundent tunnels.
Nonessential-Nonhub Proteins in the Protein-Protein Interaction Network
Authors: Dong Yun Yuan , Zhang Xian Chun
Published: May 2014

Protein-protein interaction (PPI) networks provide a simplified overview of the web of interactions that take place inside a cell. According to the centrality-lethality rule, hub proteins (proteins with high degree) tend to be essential in the PPI network. Moreover, there are also many low degree proteins in the PPI network, but they have different lethality. Some of them are essential proteins (essential-nonhub proteins), and the others are not (nonessential-nonhub proteins). In order to explain why nonessential-nonhub proteins don’t have essentiality, we propose a new measure n-iep (the number of essential neighbors) and compare nonessential-nonhub proteins with essential-nonhub proteins from topological, evolutionary and functional view. The comparison results show that there are statistical differences between nonessential-nonhub proteins and essential-nonhub proteins in centrality measures, clustering coefficient, evolutionary rate and the number of essential neighbors. These are reasons why nonessential-nonhub proteins don’t have lethality.
The Crystal Structure and Mechanical Characteristics of Enamel and Dentin of Primary and Permanent Teeth
Authors: Zhang Rui , Lin Qian Qian , Wu Fan Bieke , Wang Zhen Guo , Liu Bin
Published: May 2014

Objective:To test and contrastive analysis the crystal structure and mechanical characteristics of enamel and dentin of primary and permanent teeth by XRD and contact angle meter, provide information and experimental data for bionics and designs of dental materials.Methods:Teeth were randomly divided into four groups, including permanent teeth enamel group, permanent teeth dentin group, primary teeth enamel group, and primary teeth primary teeth. The crystal structure and mechanical characteristics of teeth were tested by XRD and contact angle meter. The results were analyzed with one-way ANOVA.Results:The crystalline and grain size of enamel were significantly larger than dentin’s. The crystalline and grain size of enamel and dentin of permanent teeth were also larger than primary teeth.Conclusions:The XRD and contact angle of primary and permanent teeth are closely related to their structures, Dental filling material to give full consideration to their different property.
Improvement of LDPC Codes Decoding Algorithm in the Application of the Rotational OFDM System
Authors: Sun Zeng You , Li Huan Huan
Published: May 2014

Because the performance of LDPC codes is better than Turbo codes, convolution codes, etc., so the combination of LDPC codes and the OFDM technology has higher effectiveness. Traditional LDPC decoding algorithm (BP algorithm) exists large amounts of multiplication, division and index calculation, and when decoding cycle, its computational cost will increase exponentially, which not only increases the complexity, and makes the numerical stability of the algorithm deteriorates, therefore, in this paper, we propose an improved decoding algorithm, namely the combination algorithm of Offset-BP-base and Offset BP. In the AWGN channel environment and the rotational modulation of OFDM, compared with LLR BP algorithm and BP-based algorithm, the improved algorithm improves the performance of the system, and the complexity is reduced.
A Robot Self-Learning Algorithm for Safe Cooperation in Industrial Environments
Authors: Gorbenko Anna
Published: May 2014

In this paper, we consider the problem of automatic monitoring of industrial environments. We propose a self-learning algorithm for safe cooperation in industrial environments. Our algorithm is based on the system of mobile robots.
Analysis of Influencing Factors of Housing Price in Xiangtan City
Authors: Chen Rong Fang , Tang Jun
Published: May 2014

On the basis of rationality evaluation index of housing price, the main influencing factors of housing price were proposed. Through the analysis of 2004-2013 Xiangtan land prices, housing price, construction costs and taxes and other factors, it is concluded that the four main factors that affect Xiangtan City’s housing price are land prices, housing supply, construction costs and taxes.
Analysis on the Differences of Body Composition and Maximal Oxygen Uptake between Sports and Non-Sports Male Students
Authors: Zhao Bin
Published: May 2014

Purpose: In order to further study the physical differences between sports major and non-sport major male students, and better carry out individualized physical education.
Methods: Body composition analyzer and power cycling were used to test body composition and maximal oxygen uptake for sports major and non-sport major male students. Data were analyzed by SPSS 17.0, and compared among the groups by t test.
Results: The results showed that the percentage of body fat of sports majors was 10.57 ± 3.07 %, non-sport major male students’ body fat percentage was 17.66 ± 6.28 % (P<0.05), and sports majors male students’ protein content was 13.25 ± 0.64 kg, non-sport major students’ protein content was 10.98 ± 1.15 kg (P<0.05). Sports majors students’ body fluid content and maximal oxygen uptake was significantly higher than non-sport major male students (P<0.05). in addition, other indexes of body composition, sports major students were better than that of non-sport major students, but they showed no significant differences.
Conclusion: This study showed that long term training engaged in sports majors students’ protein content, and body fluid content aspects were significantly higher than that of non-sport major male students and aerobic capacity was significantly better than the non-sport major students.
Soft Asphalt Pavement – Solution for Low-Volume Roads in Changing Climate and Economy
Authors: Vaitkus Audrius , Vorobjovas Viktoras , Čygas Donatas , Pakalnis Algis
Published: May 2014

In Lithuania, it has always has been an important issue to find durable and cost-effective solutions for paving low-volume roads. The conventional asphalt concrete structures were built using paving grade bitumen with the penetration of 70/100 or 100/150 over the recent 20 years. The performance of those pavements was satisfactory. As an alternative solution, the use of soft asphalt pavements was proposed. This technology is widely used in Nordic countries. But in Lithuania it has never been applied. Research on the designed soft asphalt mixtures was carried out and the trial on-site sections were constructed. The results of laboratory tests and on-site research were positive and promising. Based on that, the technology could be considered as successfully implemented and good quality was achieved.
Study on Photocatalytic Degradation of Phenol by ZnO Thin Films
Authors: Wu Han Shui , Wang Ying Lian
Published: May 2014

ZnO thin films with excellent properties have been prepared on glass substrates and quartz substrates by sol-gel process. Structural features, surface morphology and UV absorption spectrum have been studied by XRD, AFM and UV-Vis-Nir scanning spectrophotometer. The influence of different wavelengths of UV irradiation, different substrates and different annealing temperature on photocatalytic performance have been further studied. The results show that the ZnO thin films prepared on quartz substrates, annealing at 400 oC has higher degradation rates. The experiments realize the supported catalysts, easy recycling and good catalytic effect.
Structure and Optical Property of Cu2O:N Thin Film Deposited by Reactive Pulse Magnetron Sputtering
Authors: Zi Xing Fa , Liu Rui Ming , Ye Qing , Shu Xin Zhu
Published: May 2014

N-doped Cu2O (Cu2O:N) thin films were deposited on glass substrate by reactive pulse magnetron sputtering method using Cu target. Crystalline phases of thin films were controlled by adjusting N2/ O2flow rate ratio and sputtering power precisely during the sputtering process, and the single phase of Cu2O(111) thin films were obtained at room temperature. The thin films deposited at different sputtering powers were characteristics of 2D growth and the root mean square (RMS) of surface roughness of thin films gradually increased with the increasing of sputtering power. The optical band gap (Eg) of thin films were in the range 2.18-2.35 eV, and slightly decreased with increasing of sputtering power from 45 W to 90 W.
Synthesis of P1-Stavudine-P2-Zidovudine-5′,5′-Diphosphate
Authors: Ma Cha , Liu Si , Gong Shan Shan , Sun Qi
Published: May 2014

P
1-Stavudine-P2-zidovudine-5′,5′-diphosphate has been synthesized efficiently from the phosphoropiperidate/4,5-dicyanoimidazole (DCI) system. The redox condensation protocol provided a chromatography-free method for the preparation of stavudine 5′-phosphoropiperidate from the corresponding stavudine 5′-phosphate.
Synthesis of β,γ-Bridging Oxygen-Modified Ribavirin 5′-Triphosphates
Authors: Wang Qiang , Gong Shan Shan , Sun Qi
Published: May 2014

A novel P(V)–N activation strategy for the synthesis of β,γ-bridging oxygen-modified ribavirin 5′-triphosphates (β,γ-CX2-NTPs, X = H, F, and Cl) from protected ribavirin 5′-phosphoropiperidates has been developed. The experimental results indicated that the employment of DCI activator could notably increase the product yield.
Applied Technology in Supervision Model of Government Investment Projects Based on Deterrence Game Model
Authors: Wu Yun Na , Peng Yan , Chen Kai Feng , Xu Ru Hang
Published: May 2014

The psychology of utility of the agent in government investment projects is studied from the psychological point of view in this paper. Combining the game theory with the deterrence theory, we establish the applied technology named deterrence game model which is used to predict the behavioral intention of the agent. Then according to the specific actions of the agent during the construction,we adjust to exert a certain deterrence which is expected to restrain and guide the behavior of the agent,which makes the whole process supervision of government investment projects under control.This paper demonstrates the effectiveness of the applied technology.
Applied Technology in Optimized Design of Battery Laying for Solar Cabin
Authors: Xu Min Xing , Fan Yuan , Zheng Wei Jian
Published: May 2014

Solar energy is clean energy, the use of which has rapid development. But due to its high cost, it can not get high returns in a short time. So the optimization of laying solar cell installation to achieve the maximal utilization of solar energy has a sufficient and practical significance. It’ll make solar energy to achieve maximal revenue. Using applied technology, this paper studies the best way of lying photovoltaic cells on the outer surface of cabin,selecting the optimal tilt angle and orientation, redesigning solar cabin. The applied technology includes: continuous discrete problem, nonlinear regression models, relaxation solution, the simulated optimization of MATLAB 0-1 matrix and other optimizing methods are used to design a new type of solar cabin, which can reduce costs and gain greater earnings.
Research of USB OTG Technology in Image High-Speed Data Transfer
Authors: Cao Miao , Yin Peng
Published: May 2014

In the high speed data transmission field, the mass data, which are obtained by high speed CCD camera, are compressed and stored in large capacity storage unit, and uploaded to the process control unit simultaneously. ISP1761,which is USB protocol chip, is introduced to actualize protocol transform, control Host/ Peripheral switchover, dominate up/down high speed data transfer with the contradiction of duplicative function of data compression board in the USB transfer. In order to give full play to the function of ISP1761, Virtex5 FPGA chip, which contains MicroBlaze function, is adopted to fulfill initialization and Direct Memory Access data transfer. High speed (52.4.8Mbps) compression data transfer is achieved.
An Integrated Architecture for Satellite Control Center System
Authors: Shang Hui Ping , Jia Ying , Wang Jian Xing
Published: May 2014

This paper presents a layered and integrated approach to the SCC system in TT&C area. The SCC system is developed to encapsulate this approach. A four-layer hierarchy is proposed for the SCC system among the following layers: user agent layer, application process layer, lower layer services and support, and hardware. The SCC system includes nine functional components: monitoring and control, data display, command operation, data processing, data storage and management, orbit calculation and analysis, interface computer software, duplex management and time service. The SCC system is implemented as five functional subsystems: data processing system, database management system, operation and control system, and interface computer system. Details of the overall system architecture and the integration of the above components and subsystems are included in the paper.
Optimization Design of Structure and Parameters for RBF Neural Network Using Hybrid Hierarchy Genetic Algorithm
Authors: Gan Xu Sheng , Yang Can , Gao Hai Long
Published: May 2014

To improve the optimization design of Radial Basis Function (RBF) neural network, a RBF neural network based on a hybrid Genetic Algorithm (GA) is proposed. First the hierarchical structure and adaptive crossover probability is introduced into the traditional GA algorithm for the improvement, and then the hybrid GA algorithm is used to optimize the structure and parameters of the network. The simulation indicates that the proposed model has a good modeling performance.
Mathematical Model for Tension of Textile during the Process of Supercritical Fluids Spray Dyeing
Authors: Wang Ming Lu , Wang Wei Qiang
Published: May 2014

The tension, caused by the high pressure jet when it`s sprayed on the textile, has obvious effect on the strength and dyeing quality of textile during the process of supercritical fluids spray dyeing. Based on the mechanical equilibrium of infinitesimal element, at the premise of considering the elasticity of textile, the parameter equations were built by introduced the transformation parameter. The internal tension and simplified deformation curve equation of textile were obtained by the Newton method. The simulating analysis may provide a theoretical basis and guidance for the actual process of supercritical fluid spray dyeing.
Research on the Effect of Moulded Surfaces of Deflectors
Authors: Deng Jia , Bi Shi Hua , Yu Shao Zhen
Published: May 2014

Whether the gas jet is deflected smoothly or not directly affects the success or failure of launch, during the progress of the land-based missile with the vehicle-mounted vertically thermal launch. This paper uses 3-D dynamical simulation of gas jet to analyse basic deflecting features of triple-faced deflectors and double-faced ones with different moulded surfaces. The result shows that, triple-faced deflectors deflect quite smoothly and requite large area of the firing position. With some differences, double-faces deflectors protect the vehicle and wheels much better and requite more of the firing position of the deflector’s bilateral.
Modeling and Simulation of Vector Slip Frequency Control System of Induction Motor
Authors: Cao Miao , Yin Peng
Published: May 2014

This paper is based on MATLAB / SIMULINK software for induction motor slip frequency vector control system. Modeling and simulation results show that to get the motor torque ripple is small with this method, and the system meets the general electrical apparatus speed performance required by smooth speed. Effective control of induction motors can be achieved. With the simulation results, it can guide system debugging and installation and having a good application value.
High Temperature Stability of Fepure-Si3N4 in Reducing Atmosphere
Authors: Li Bin , Chen Jun Hong , Su Jin Dong
Published: May 2014

Iron and silicon nitride powders were mixed in a certain proportion and compacted, then Fepure-Si3N4 were prepared by heating the samples in reducing atmosphere at 1100°C, 1300°C and 1500 °C, respectively. The stability of Fepure-Si3N4 prepared at different temperatures was analyzed by XRD diffraction and theoretical thermodynamics calculation. Results show that the main components of Fepure-Si3N4 at high temperatures in reducing atmosphere are Si3N4 and Si2N2O; Iron exists in Fepure-Si3N4 at 1100°C, and iron had largely converted to Fe3Si phase at 1300°C and 1500°C, which is in accordance with the result of thermodynamic theoretical calculation.
The Raw Material Development and Application for Shui Nationality Traditional Costumes
Authors: Zhang Chao , Zhu Xiao Jun , Guo Lin , Xu Ren Ping
Published: May 2014

According to the traditional decorative materials of Guizhou Shui Nationality traditional costumes as the starting point, this paper explores the effect of traditional dress decoration materials faced by the current situation as well as new decorative materials development and application of the traditional culture, the conflict and decorations visual effect. Therefore, proposed in the new environment of market economy, it is necessary to make the development and application of dress traditional materials in order to meet the ever-changing market demand, and also to the protection and inheritance of traditional techniques and characteristics of the Shui Nationality decoration visual aesthetic of art and decoration materials contained in the folk culture. The purpose is to express its application value for the diversified development of world culture and art.
Geomechanics Research with Critical Depth Prediction and Surface Subsidence Range Controlling
Authors: Zheng Jian Ming , Ren Feng Yu , Tang Lie Xian
Published: May 2014

Traditional subsidence range prediction by stagger angle doesn’t adapt to production situation in deep mining, the angle is usually large. Analyze the lateral support force of the moving bulk solid in the subsidence pit based on maintaining sidewall rock stability of subsidence pit. While bulk solid thickness of subsidence pit is not less than critical bulk solid column, the active pressure and passive pressure of bulk solid prevent the scaling of sidewall rock together. By analyzing the measured data of subsidence range of Xishimen mine, the height of critic bulk solid column relates to stability of rock, sidewall angle of goaf, internal friction angle, and rock loose coefficient. In deep mining, that filling subsidence pit with waste rock can lower the critical depth and control surface subsidence range.
Dynamic Research with Drivetrain Simulation and Modal Analysis of Wind Turbine Gearbox
Authors: Li Zheng , Chen Yang
Published: May 2014

The dynamic performance of wind turbine gearbox is very important for measuring the integrated vibration and noise of the whole drivetrain system of wind turbine. The stiffiness and modal parameters of the gearbox will influence the system vibration situation obviously. The wind turbine gearbox is a kind of complicated coupled mechanics; it means the modal analysis on gearbox should consider the coupling effects of the components and define logical damping factors. This paper presents a method to simulate wind turbine gearbox system with the multi-body drivetrain dynamic analysis software. The modal analysis of wind turbine gearbox can be carried out on the basis of the multi-body dynamic theory.
Hydromechanics Analysis with Flow-Field Characteristics of High Pressure Water-Jet in Sloping Bottom Hole of Radial Horizontal Drilling
Authors: Yi Xian Zhong , Yi Song Lin , Shu Hui , Ji Yuan Qiang , Jiang Sheng Zong
Published: May 2014

According to the principle of fluid dynamics, the Fluent software is used for the numerical simulation analysis of three-dimensional single-hole nozzle submerged jet flow field of radial drilling inclined shaft. The results show that when the bottom is tilted, there are two sizes of spiral along the center axis, and the vortices along tilt direction of the wall are stronger. When the jet source closes the bottom, the kinetic energy of jet is converted into the impact for the bottom of well, making the pressure of bottom hole on the wall have a tendency to rise.
A Dynamic Model with Material Properties for the Proton Exchange Membrane (PEM) Fuel Cells
Authors: Chen Hui Cui , Pei Pu Cheng
Published: May 2014

An equivalent circuit model of the PEM fuel cell is built to study the voltage dynamic response during load change. A mathematical model is built to simulate the voltage response during load change. The simulation results fit the test results very well. Then the model is applied to predict the limiting operation condition of the fuel cell. The model also provides a reference to design PEM fuel cell control modes.
Research on Pulley Strain of Metal Belt CVT
Authors: Zhang Wu , Guo Wei , Kou Fa Rong , Yang Yi Zhi
Published: May 2014

Pulley strain aggravated whole-Part abrasion, affected friction and lubricates state of metal belt continuously variable transmission. Pulley strain was analyzed by analytical method and finite element analysis. The results indicate that with the increase of transmission ratio, the driver pulley compressive strain is increases after reduces for a while, and the driven pulley increase. Compressive strain dense when radius is lesser and vice versa. Two methods results are basically the same, whereby demonstrating that the model is rational and that the analysis results are reliable.
Research on Information Engineering with Infrared Camera Measurement in Eye Tracking Technology
Authors: Chen Le Yang , Zhang Fan
Published: May 2014

The thesis provides detail research on eye movement device theory and realization with infrared camera. It discusses pupil coordinate system and field of view coordinate system, calibration and displaying of real-time eye movement measure for eye tracking device, calibration algorithm for actual focus point calculation by pupil center position, and analysis of Eye movement device.
Design and Implementation of Intelligent Control System in Rice Seedlings Factory
Authors: Ma Liu Xuan , Ge Yi Yuan , Sun Ri Xin , Guo Shu Li , Guo Yan Bo
Published: May 2014

Rice is an important food crop in the world, which provides a strong guarantee for our country's food security strategy policy. As one of the major rice producing areas, the degree of mechanization of rice cultivation is not high, especially in rice seedling, there is not a high degree of automation, a lot of manpower and resources are consumed, it is not suitable for factory work. Based on this, Rice seedlings factory intelligent control system has been researched on the paper. The system can automatically capture the growth of rice seedlings light intensity, temperature etc, and numerical analysis. The indoor self-propelled sprinklers, ventilation and heating systems, carbon dioxide generator and an outdoor shade cloth of the device operation are controlled based on established data. In order to achieve optimal conditions for the growth of rice seedlings, seedlings for large-scale factory, improve efficiency and cost savings.
Control System of Crawl Equipment for all-Position Welding
Authors: Yang Fu , Zhang Wen Ming
Published: May 2014

The circumferential welding and the straight seam welding at all position can be realizable by using welding crawl equipment for all position together with the flexible metal band track. The properties of the control system play a decisive role on the welding quality. The program controlling system based on PLC, the drive system for controlling system DC motor and the digital showing system has been developed in present work. The experiments show that the whole system is stable and effective and its control precision can meet the requirement of welding process.
A Fuzzy PID Controller Design and Application
Authors: Xu Hong Hua , Li Li , Zhai Hong Yu
Published: May 2014

Control system of microcomputer controlled electro-hydraulic servo rock three triaxial test instrument adopts closed loop control and the control strategy is based on PID control. Because the conventional PID control cannot meet the control accuracy and stability of system, the intelligent fuzzy controller is introduced to realize the automatic processing in control process. The fuzzy PID controller's design procedure is given to determine the fuzzy domain, fuzzy rules, calculating the reference method and defuzzification process of membership function.
Mechanical Research with Intelligent Avatars for Robot Learning from Demonstration
Authors: Gorbenko Anna , Popov Vladimir
Published: May 2014

It is well known that learning from demonstration has many attractive points for both learner and teacher. However, the quality of such learning depends crucially from the system of understanding of human demonstrations. In this paper, we consider an approach to design intelligent avatars for robot learning from demonstration. Also, we present experimental results for intelligent avatar mediated learning from demonstration.
The Effect of Current Density on the NiCu Coating Synthesized by Electroplating
Authors: Yang Rui Song , Cui Xue Jun
Published: May 2014

In this paper, the NiCu alloy coatings were electroplated on the 304 stainless steel coupon. The XRD was used to identify the phase structure of the as-prepared products. The SEM and EDS were used to observe the surface morphology of the as-prepared coatings and the atomic composition of the as-prepared coatings, respectively. The influences of the current density on the as-plated NiCu coatings are systematically researched. It was found that the moderate current density is beneficial to the compactness of the coatings. The content of the copper decreased and that of the nickel increased with the increasing of the current density. When the current density is smaller than 40 mA/cm2, the contents of nickel and copper vary apparently. When the current density is larger than 40 mA/cm2, the contents of nickel and copper vary slightly. That means the copper is more easily deposited at low current density and the nickel is more easily deposited at high current density.
Research on Relevance Vector Machine Model Based on Kernel Partial Least Square in Properties of Engineering Materials
Authors: Gan Xu Sheng , Yang Can , Gao Hai Long
Published: May 2014

To improve the prediction of properties of engineering materials, a Relevance Vector Machine (RVM) regression algorithm based on Kernel Partial Least Squares (KPLS) is proposed. In the algorithm, firstly execute the feature extraction from the original samples using KPLS, and then use obtained feature to realize RVM regression. The simulation shows that the hybrid regression algorithm can effectively reduce the difficulty on RVM modeling and has a wide application in prediction of properties of engineering materials.
Applied-Information Technology in Stability and Existence of Solution for Functional Differential Equations with Impulses
Authors: Li Yan Ling , Hua Man
Published: May 2014

In this paper, we employ iterative analysis method of applied-information technology to obtain both the existence and the stability of first order functional differential equations with impulses for periodic boundary value problem. Some new results are obtained.
Influence of Chondroitin Sulfate A on Zeta Potential, Aggregation and Sedimentation of Nano COM and Nano COD Crystallites
Authors: Deng Lan Qing , Xue Jun Fa , Tang Cai Yan , Xie Yu Shan , Ouyang Jian Ming
Published: May 2014

The influence of urinary macromolecule chondroitin sulfate A (C4S) on Zeta potential, aggregation and sedimentation of calcium oxalate monohydrate (COM) and calcium oxalate dihydrate (COD) nanocrystallites with a diameter of about 50 nm were investigated using nanoparticle size Zeta potential analyzer and transmission electron microscope. C4S could increase the absolute value of Zeta potential on surface of nanoCOM and nanoCOD crystallites by adsorbing on crystal surface, it led an increase of the electrostatic repulsion force between the crystallites, so the aggregation and sedimentation of these crystallites were inhibited, and the stability of the suspension of nanoCOM and nanoCOD was improved. In conclusion, C4S could inhibit the formation of CaOxa stones。
Study for Frost Resistance of Cement Concrete Pavement with NanoSiO2 as Admixture
Authors: Yu Wen Yong , Sun Ling , Wu Chen Long , Shao Chun Hong
Published: May 2014

With the study of frost resistance of plain concrete and mixed concrete with fly-ash substituted and mixed concrete with fly-ash substituted and nanoSiO2 as admixture, the outcomes of the test go that the frost resistance of concrete with nanoSiO2 will be increased considerably.
Dielectric Relaxation Measurements in La2Mo1.5W0.5O9 Oxide-Ion Conductor
Authors: Li Dan , Li Jun , Chen Chong , Qi Lin , Li Xiang Hu
Published: May 2014

The effects of tungsten doping in La2Mo1.5W0.5O9 sample were studied using dielectric relaxation measurements. The results indicate that W6+ can suppress the α/β phase transition in the La2Mo2O9. Additional to the low-temperature relaxation peak Pd associated with oxygen ion diffusion, a new dielectric loss peak Ph associated with a phase transition from the static disordered state to the dynamic disordered state of oxygen ion distribution was observed around 740 K.
Synthesis of Synthetic Hematite with Substituted Aluminum by Sol-Gel Method
Authors: Carbajal Georgina , Zurita-Mendez N.N. , Espinosa-Medina M.A. , Martinez-Valencia A.B. , Sanchez-Castillo A.
Published: May 2014

In this work, synthetic hematite with isomorphically substituted aluminum contents were obtained by the sol-gel chemical synthesis. Nanomaterials with Fe and Al contains were obtained by the sol-gel method mixing stoichiometric mixtures of ferric chloride (FeCl3) and aluminum isopropoxide Al (OC3H7)3 at 75°C. The obtained sol-gel was dried at 60 oC followed by calcinations at 400, 800 and 1100 oC. The resulting powders were characterized by X-Ray diffraction and Scanning Electron Microscopy (SEM). Preliminary results showed α-Fe2O3 particles into amorphous Al-O-Fe structure, and the formation of alumina with sintering temperature. SEM characterization results, showed small size particle formation in the order of 100-200 nm, however nanosize particles could be improve by chemical parameters control and ultrasonic dispersion. Also SEM observation showed the formation and homogenous distribution of minority Fe-O phase particles between Al-O-Fe phase particles.
Phase Evaluation and its Hydrogen Correlation of the FeAl3 and FeAl2 Intermetallic Alloys during Mechanical Ball-Milling with Water
Authors: Romero-Romero J.R. , López-Miranda J. Luis , Esparza Muñoz Rodrigo Alonso , Espinosa-Medina M.A. , Rosas Trejo Gerardo Antonio
Published: May 2014

FeAl3 and FeAl2 intermetallic alloys composition was produced by conventional casting technique. Typically these intermetallic alloys are susceptible to hydrogen environment embrittlement. In this process, water vapor in the air induced cleavage fracture of intermetallic alloys. In order to take advantage of this phenomenon, we evaluate the embrittlement reaction during ball-milling of the pre-alloyed intermetallic material and water under different milling times. During the corrosion reaction, the amount of hydrogen releases was correlated to the amount of aluminum hydroxide formation. The obtained results were based on X-ray diffraction and scanning and transmission electron microscopy. It was observed that as the milling time increased the amount of hydrogen liberated is increased. The intermetallic FeAl3 the 72.95 wt. % reacted with water and the hydrogen release was 0.7769 L and is near the theoretical values that can be obtained.
Carbon Nanotubes Functionalized by Nanoparticles of Platinum
Authors: Capula-Colindres S. , Aguir K. , Cervantes-Sodi F. , Villa-Vargas L.A. , Garibay-Febles Vicente
Published: May 2014

Carbon nanotubes (CNT) based gas sensors have attracted interest due to their excellent properties. Several studies have reported changes in the CNT’s electrical properties when functionalized with platinum (Pt) nanoparticles. In this investigation, the vapor phase impregnation decomposition (VPID) method was employed to incorporate Pt nanoparticles on CNT. Both, Pt nanoparticles and CNT were characterized by high resolution transmission electron microscopy (HR-TEM). The sensitivity of sensors based on CNT doped with Pt, was evaluated with ozone molecules. TEM images showed low and heterogeneous distribution on the surface of carbon nanotubes. The gas evaluation of CNT-Pt sensor presents good and quick response to ozone molecules at different concentrations and temperatures. The best response was found to be at 120 °C.
Chemotherapeutic agents for the treatment of hepatocellular carcinoma: efficacy and mode of action
Authors: Shaaban Saad , Negm Amr , Ibrahim Elsayed E. , Elrazak Ahmed A.
Published: May 2014

Hepatocellular carcinoma (HCC) is a dreaded malignancy that every year causes half a million deaths worldwide. Being an aggressive cancer, its incidence exceeds 700,000 new cases per year worldwide with a median survival of 6-8 months. Despite advances in prognosis and early detection, effective HCC chemoprevention or treatment strategies are still lacking, therefore its dismal survival rate remains largely unchanged. This review will characterize currently available chemotherapeutic drugs used in the treatment of HCC. The respective mode(s) of action, side effects and recommendations will be also described for each drug.
Washington State's Lystedt Law in Concussion Documentation in Seattle Public High Schools
Authors: Bompadre Viviana , Jinguji Thomas M. , Yanez N. David , Satchell Emma K. , Gilbert Kaiulani , Burton Monique , Conrad Ernest U. , Herring Stanley A.
Published: May 2014

Context:

The Lystedt law requires high school athletes who have sustained a concussion to be removed from practice and play and not to be allowed to return until cleared by a medical professional.

Objective:

To determine the effect of the Lystedt law on injury and concussion documentation in the Seattle public high schools.

Design:

Cross-sectional study.

Setting:

Seattle public high schools.

Patients or Other Participants:

The numbers of students, aged 13 to 19 years in the 2008–2009, 2009–2010, and 2010–2011 school years, were 4348, 4925, and 4806, respectively.

Main Outcome Measure(s):

All injuries documented in SportsWare by athletic trainers in Seattle public high schools. We evaluated all injuries, including concussions recorded during the 2008–2009 school year, before the Lystedt law, and during the 2 school years after the law took effect (2009–2010 and 2010–2011). Incidence rates before and after the law were estimated and compared.

Results:

The concussion rate was −1.09% in 2008–2009, 2.26% in 2009–2010, and 2.26% in 2010–2011. A comparison of relative risks showed that the incidence rates of concussions were different before and 1 year after the Lystedt law (relative risk = 2.10; 95% confidence interval [CI] = 1.50, 2.93) and 2 years after the law (relative risk = 2.10; 95% CI = 1.49, 2.93). Overall, the mean number of days out of play after 2008–2009 was almost 7 days greater after the law took effect (difference = 6.9 days; 95% CI = 0.70, 13.1). For females, the mean number of days out of play after 2008–2009 was more than 17 days in 2009–2010 (difference = 17.2 days; 95% CI = 4.81, 29.5) and was more than 6 days in 2010–2011 (difference = 6.3 days; 95% CI = 1.62, 11.0).

Conclusions:

The number of documented concussions more than doubled after the institution of the Lystedt law, which may be attributed to heightened awareness and closer monitoring.
National Collegiate Athletic Association Injury Surveillance System: Review of Methods for 2004–2005 Through 2013–2014 Data Collection
Authors: Kerr Zachary Y. , Dompier Thomas P. , Snook Erin M. , Marshall Stephen W. , Klossner David , Hainline Brian , Corlette Jill
Published: May 2014

Background:

Since 1982, the National Collegiate Athletic Association has used the Injury Surveillance System (ISS) to collect injury and athlete-exposure data from a representative sample of collegiate institutions and sports. At the start of the 2004–2005 academic year, a Web-based ISS replaced the paper-based platform previously used for reporting injuries and exposures.

Objective:

To describe the methods of the Web-based National Collegiate Athletic Association ISS for data collection as implemented from the 2004–2005 to 2013–2014 academic years.

Description:

The Web-based ISS monitored National Collegiate Athletic Association–sanctioned practices and competitions, the number of participating student–athletes, and time-loss injuries during the preseason, regular season, and postseason in 25 collegiate sports. Starting in the 2009–2010 academic year, non–time-loss injuries were also tracked. Efforts were made to better integrate ISS data collection into the workflow of collegiate athletic trainers. Data for the 2004–2005 to 2013–2014 academic years are available to researchers through a standardized application process available at the Datalys Center Web site.

Conclusions:

As of February 2014, more than 1 dozen data sets have been provided to researchers. The Datalys Center encourages applications for access to the data.