bluuebunny/crossref_metadata_2025 huggingface dataset:
Model Analysis of the Impact of Logistics Factors on Economy
Authors: Xu Nuo , Zhang Xiao Jie
Published: December 2014

In many economically developed countries, the logistics industry occupy a dominant position in the economic market. The development space is constantly expanding, using the traditional algorithms to analyze the economic impact of logistics factors model was conservative, which does not have a high accuracy and hence affects the efficiency of modeling. According to this problem, logistics factors impact on the economic analysis modelling based on the gravity model was proposed. Based on the difference between logistics relationship, the GOP value of the economic partnership, the distance between each other and economic policy of logistics factors such as material space efficiency and time efficiency, the economic impact of logistics factors is analyzed. Experiments prove that using the method of gravity model is established for logistics analysis of the factors that affect the economy, high accuracy rate and reliability.
Countermeasure and Research of Activity-Based Costing Applied in the Enterprise of our Country
Authors: Wei Xing
Published: December 2014

At the present stage, there are many problems in the implementation of homework cost method in our country enterprise, and most of the enterprises face this or that kind of obstacles on the road of the implementation of homework cost method, so the business case with successful implementation of homework cost method is less. Through the research on the experience abroad and some successful application cases in domestic, theoretical reference and inductions of all the experts and scholars, the author has made systematic comparison analysis. In view of existing problems, he has put forward the corresponding countermeasure to the implementation of homework cost method in our country enterprise.
Emergency Distribution Optimization Based on Improved DEA Model
Authors: Liu Shu Hua , Liu Yu Qing
Published: December 2014

The purpose of this research is to investigate the optimum distribution plan through input and output analysis, and to improve the efficiency of decision-making and relief operation in the emergency supply chain. The data were obtained via an official figures survey on demand information. And stimulated experiment is carried out based on these official figures. This study developed an improved DEA for optimization of medical textiles distribution in emergency supply chain to find out the best distribution plan with the highest relative efficiency. The improved DEA model introduces aggressive cross evaluation approach to improve the basic C2R model, which primarily determines the matrix of relative efficiency Eii. Aggressive cross evaluation aims to maximize self-performance of each, and to minimize performance of other as far as possible, and finally find out the optimum solution. Further, model is constructed to validate the DEA effective.
Analysis on Job Pressure and Job Performance and their Relationship
Authors: Zhou Feng
Published: December 2014

Excessive working pressure and psychological stimulate make people a great stress. The purpose of this study was to investigate the teachers' job pressure, job performance and their relationship. The main methods is questionnaires, the sample consists of 250 employees from seven higher universities. The results indicate that job satisfaction is not independent in all job facets and that satisfaction with one facet might lead to satisfaction with another.
Study on the Participation of Citizens in Public Policy Formulation
Authors: Zhang Xuan
Published: December 2014

Hot topic in the world of political democratic development is citizen participation, in the governance of the community, public policy making is a key element, citizen’s participation can unify the wisdom of the masses, and thus safeguard the fairness of the policy-making and rationality, so it will bring accordance for public policy formulation, evaluation, and adjustment. Today, citizen participation in public policy making in our country is an important way of citizen participation, is being gradually spread. To this end, this paper describes an effective strategy to improve citizen participation in public policy formulation.
Unascertained Measure Evaluation in Financial Distress Prediction of Listed Company
Authors: Zhao Hai Yan , Li Juan
Published: December 2014

Evaluation system of financial distress prediction of listed company was established base on the non-financial index cooperated with financial index widespread. And the procedure of the application of unascertained measure model to financial distress prediction was stated in brief. We focused on a certain listed company of Harbin city in Heilongjiang Province, the results showed that the financial risk of this company was moderate-warning according unascertained measure model. It was found that the application of unascertained measure model to financial distress prediction of listed company was feasible. Meanwhile, this method solved the problem of the weight which was presented subjective judgment in market evolution, and promoted the market process fairer and more scientific. The unascertained measure model was very worthy of research significance and prospect.
Based on Perspective of the Owner of the Design Change Control of the Construction Project
Authors: Cao Yi Yun , Tao Xue Ming , Zhou Wen Tao , Zhu Fang Lin
Published: December 2014

Continuous construction project cycle is long, large investment and a lot of participants, the internal and external factors, involving a lot of unpredictable change easily to project design. This paper respectively from the perspective of the owner, designer, contractor, this paper expounds the formation of design change, analyze the design change might brings to the project schedule, cost, and combined with practical engineering cases and widely existing problems, and from the owners' perspective, how to realize the control and management of design change are expounded, and gives corresponding solutions.
Study on Prediction of the Peasants’ Income Based on SVM
Authors: Zhang Li Na , Yang Bo
Published: December 2014

China is a big agricultural country, effective prediction of peasants’ income is very important. This study mainly uses the SVM theory to predict the peasants’ income. By analyzing the influence factors of peasants’ income, establishes the index system, that is corresponding relationship of peasants’ income and factors of social influence, According to this index system, designs the prediction method of peasants’ income based on SVM. Bases on the statistical data of social factors and peasants’ income between 1990-2012 in china, to train the SVM model, at the same time, the kernel function and parameters of SVM used were setting and compared. The experimental results show that the accuracy of RBF function is 90.7%, the time is 98ms, has higher accuracy and faster computing speed.
Power Consumption Prediction Modeling of Cement Manufacturing Based on the Improved Multiple Non-Linear Regression Algorithm
Authors: Zhao Hui , Zhang Ning , Wang Hong Jun
Published: December 2014

The principal component analysis (PCA) is applied in this paper, since the existing power consumption prediction models of cement manufacturing influenced by many factors are quite complex and have low accuracy. In this way, four new key factors affecting the power consumption of cement manufacturing are obtained instead of the eleven original ones, with the complexity of the computing model simplified. Built upon this is the power consumption prediction model of cement manufacturing based on an improved multiple non-linear regression algorithm. Then the efficiency of the model, obviously improved the forecasting precision, is verified in Pingyi Zhonglian Cement Plant. In other words, a theoretical basis for cement plants power consumption forecasting management is provided in this paper.
Study on the Processing Rate Allocation in Forming Process of Cartridge Case
Authors: Zhao Jing , Du Zhong Hua , Zhao Jin Ku
Published: December 2014

With the development of die industry, multi-position progressive die is used wildly. The process rate allocation of each punching process is very important during the whole cartridge case forming. This paper shows a key point to the theoretical calculation of process rate allocation of cutting cupping, first cite-longing and second cite-longing, and these theoretical formulas can provide a reference for future researchers.
Empirical Study on Intra-Industry Trade and Domestic Income Gap
Authors: Xia Lei , Liu Cui Cui
Published: December 2014

A large number of empirical studies show that, trade will have an impact on the domestic income gap. In turn, the gap will affect the intra industry trade? This is a problem worth thinking and research.The optimization of the trade structure has important practical significance on promotion of foreign trade competitiveness in china. In view of our city typical characteristics of rural economic structure, and since twentieth Century 90 years, expanding speed of urban income gap degree has been more than rural areas, coupled with the proportion of the increasing urban population, the importance of the income gap between urban internal, become the structural factors of widening the income gap, this paper focuses on effects of urban income gap on intra industry trade. This article empirically tests the impact of Chinese urban income gap on the industrial finished product intra-industry trade level base on Johansen Co-integration Test, finding that the urban income gap improves the industrial finished product intra-industry trade level in the long term.
An Experimental Investigation on the Grinding Force of the Electroplating CBN Grinding Wheel with Abrasive Ordering Pattern
Authors: Zhang Shan , Lu Yu Shan , Wang Jun , Ma Fei , Liu Zhi Zhen , Xiang Long
Published: December 2014

In order to obtain the effects of abrasive configurations on the grinding force of superhard abrasive grinding wheel, an experiment was carried out, which grinds steel material by the use of electroplating CBN grinding wheel with different abrasive configurations, mainly including disordered, phyllotactic, matrix and dislocation configurations. The results show that under the experiment conditions, the grinding force of each grinding wheel will increase with the grinding parameters, the grinding force is smaller by the grinding wheel with orderly configurations than disordered configurations and under the same condition of experiment, the grinding force is smallest by the grinding wheel with abrasive phyllotactic configurations.
Study of Energy Saving Controller for Beam Pumping Unit Base on Neural Net PID
Authors: Li Xiao Guang , Xiao Ping Ping
Published: December 2014

In this paper, the energy saving base on reduce voltage for motors in oil pump is analyzed, based on which the control principles of optimal slip rotating speed with maximum efficiency, minimum current, minimum input power and maximum power factor are investigated in detail, and then the PID controller that the parameter turned by BP neural network is designed，the result of experiment revealing that the essential of these control.
Research on Nonlinear Roll Stability of a Rotarily-Molded Boat
Authors: Liu Yu Liang
Published: December 2014

On the basis of nonlinear features analysis of restoring torque, damping torque and especially hull deformation, a nonlinear roll equation of rotary molding boats has been established. The equation includes elastic deformation term which differs from existing ones usually borrowing ideas of steel boats. By numerical simulation, it’s found roll frequency and velocity increase when elastic deformation occurs, i.e. the roll stability margin shrinks which can underlie how to amend the stability evaluation criteria on rotary molding boats.
Design and Realization Large-Scale Intelligent Lighting System with Adjustable Light
Authors: Gu Cheng Xi
Published: December 2014

In the process of large scale design of intelligent lighting system, the adjustable light is used for lighting, it can save a lot of energy, and lighting and energy-saving are completed. Therefore, large-scale intelligent lighting system is proposed in this paper, and the system design is obtained. According to the situation, the sensor is used to gather the natural state of the light. A reasonable illumination condition is selected. The voltage conversion processing is taken, and adjustable lighting control model is established. Simulation results show that the large-scale intelligent lighting system is applied in the lighting, the power consumption of lighting can be reduced, and the satisfactory results are obtained.
Study on Parameters of Slurry Pipeline Transportation Technology in Grade
Authors: Pu Guang Yue , Bu Yong Xia , Pan Chun Lei , Liu Hong Wei
Published: December 2014

In generally, there are multiple factories. According to mining areas, it supplies different quality iron ore concentrate. And according to the unique requirements of owners, different grades concentrate cannot be confused. Therefore, the grade of slurry pipeline transportation is needed to be used. When in the study of grade transmission, we must focus on Hydraulic characteristics of solid-liquid two-phase for different quality of iron ore concentrate. Slurry concentration and Critical velocity of flow is especially important. Research shows that the deposition rate of laminar or turbulent transition velocity is higher than the occasion when the slurry has concentration, so the minimum operating speed is controlled by sedimentation; the concentration lower limit is 62%. If the concentration is over 68%, the yield stress of slurry will increase, and the pipeline pressure will drop, which is very sensitive to slight changes in concentration. Therefore, the solid weight concentration range is 62% to 68%,as the selection range of design.
A Ship Autopilot Detection and Simulation System
Authors: Zhang Ning , Liu Peng , Wang Hai Wei , Shen Zhi Peng
Published: December 2014

The ship autopilot can't work properly on the land due to the lack of the real rudder angle and heading feedback signal. The paper established the ship motion mathematic model and designed a rudder angle generating device. Applying the real autopilot, a detection and simulation system is developed. The proposed system can connect the output data between the ship autopilot and ship motion mathematic model, then the real ship autopilot performance can be detected and evaluated.
Fast Finite-Time Consensus Tracking of Heterogeneous Multi-Agent Systems with a Virtual Leader
Authors: Xiao Qiu Yun , Wu Zhi Hai , Peng Li
Published: December 2014

This paper proposes a novel finite-time consensus tracking protocol for guaranteeing heterogeneous multi-agent systems with a virtual leader to achieve the fast finite-time consensus tracking. The Lyapunov function method, algebra graph theory, homogeneity with dilation and some other techniques are employed to prove that heterogeneous multi-agent systems with a virtual leader applying the proposed protocol can reach the finite-time consensus tracking. Numerical simulations indicate that compared with traditional finite-time consensus tracking protocols, the proposed protocol can accelerate the convergence speed of the finite-time consensus tracking.
Thermal Simulation of an Electric Box
Authors: Chen Bo
Published: December 2014

In this paper thermal simulation of a satellite borne electric box is introduced. Structure was simplified and a finite element model was built. The analysis results showed that the temperature scopes of the box and the component cases are from 45°C to 67.3°C and all of junction temperatures of the components are lower than the derated maximum junction temperatures themselves and leave enough design margins, which match the requirements of thermal analysis.
Numerical Simulation of Flaxseed and Cottonseed Oil Cakes
Authors: Chen Ge , Ren Xiao Cong , Zheng Xiao
Published: December 2014

The pressed oil-extraction process is essentially a process of oil seepage through porous cake-shaped media. Permeability of seepage field changes along with the change of porous media caused by press pressure. The change of permeability affects fluid pressure and effective pressure of oil cake pores, which means that porosity is influenced. On the contrary, the change of porosity also has an impact on permeability. The interaction between the seepage and rheology fields is termed as fluid-solid coupling. If rheology of oil cakes is considered, the fluid-solid coupling seepage with the rheological properties is the essence of the pressed oil-extraction process. In the present study, we studied a permeability model based on the deformable and rheological properties of oilseed cakes and the effective stress. The seepage and rheology fields were analyzed by alternative application of the finite difference and finite element methods. The finite element calculation model of nonlinear rheology field was established by the time step-initial strain method. We used flax and cotton seeds as examples to perform numerical simulation and calculate the displacement and pore fluid pressure dissipation of flaxseed and cottonseed oil during the press process.
Mechanism and Condensation Heat Transfer Characteristics Research on the Depth of the Flue Gas Heat Recovery from Burning Natural Gas
Authors: Han Jian Wei , Lv Wei , Gao Jian Min , Du Qian , Cheng Chao , Lin Xi Yu
Published: December 2014

This article probe into the depth of the flue gas heat recovery from the burning of natural gas. It explore the mechanism of the way to control the temperature of the flue gas from the burning of natural gas below the dew point temperature. It expounds the absorption way of sensible heat and latent heat from the vaporization in flue gas. After the study on the condensation heat transfer characteristics of the flue gas from the burning of natural gas, we can find that the dropwise condensation is more conducive to the heat exchange between flue gas and cooling water. And to find the method of dropwise condensation.
Intelligent Greenhouse Control System Design Based on RF Technology Research
Authors: Dong Gang
Published: December 2014

Greenhouses in the growth of the crops will often because of unfavorable environment not good growth, in order to be able to effectively control the temperature inside the greenhouse greenhouses, humidity, light intensity, make inside the greenhouse crop growth environment to fulfill the requirements of the best. This system by using HOLTEK series single-chip microcomputer as the control center, with various sensors for detecting module, peripheral equipment and control system in all parts of the corresponding function. Mainly by the power supply module, temperature and humidity and light intensity detection module, keys module and ZigBee wireless communication module, display module, a real-time monitoring environment, data display, automatic control function, can effectively control the growth of crops in good environment and the unnecessary waste of resources. At the same time, this system in warehouse management, flower cultivation, aquaculture, and other fields also have broad application prospects.
Anti-Ship Missile Capture Capability Modeling and Simulation Evaluation
Authors: Hou Xue Long , Shen Pei Zhi , Luo Mu Sheng
Published: December 2014

On the basis of analyzing anti-ship missile operational process, this paper expounds the factors set affecting the capture capability of anti-ship missile, systematically set up anti-ship missile capture capability evaluation model; By means of large-sample simulation experiment, this paper analyzes the effects of target designation accuracy on target speed capture probability. Simulation practice shows that the detailed simulation model establishment, large sample space design, and many times simulation experiments can realize missile searching probability simulation analysis under the condition of many factors interwoven impact, and can effectively support capture capability assessment under given conditions.
Numerical Simulation of the Gear Flowmeter Reveal Based on Pumplinx
Authors: Zhang Jun , Wu Yong , Tang Hong Mei , Tang Chun Ren , Li Xian Hua
Published: December 2014

The oil spill will directly affect the measuring accuracy of the gear flowmeter, so use the computational fluid dynamics software to calculate the leakage regulation of the internal gear flowmeter is one of the important things. Based on Pumplinx, when the end clearances of the gear flowmeter were 0um, 10um, 20um, 30um, 40um and 50um, the corresponding numerical analysis of spillage was carried out. From the results of numerical analysis, with the increase of the end clearance, the leakage amplification will also increase. In practical work, we should control the end clearance of gear flowmeter strictly while the gear works normally.
Influence of Cutout Position on Buckling of Large-Scale Thin-Walled Cylindrical Shell of Desulphurizing Tower with Welding Induced Imperfection under Wind Loading
Authors: Li Qian , Wang Deng Feng
Published: December 2014

Not only the geometrical imperfection induced by welding but also cutouts will influence the buckling of large-scale thin-walled steel cylindrical shell under wind loading. Based on the practical cylindrical shells of a desulphurizing absorption tower, in consideration of the correlation between welding induced imperfection and circular cutouts, the influence of cutout position on buckling of cylinder under wind loading is investigated by nonlinear finite element method. The results indicate that the buckling capacity varies slightly when the cutout position moves along meridional direction in the neighboring region of welding imperfection. The buckling capacity varies significantly when the cutout position moves circumferentially as the cutout is located in the welding imperfection. The buckling capacity reaches the minimum value as the cutout is located in the buckle center of cylindrical shells without cutout.
Simulation Analysis of Synchronous Belt Transverse Vibration Frequency
Authors: Shi Yao Chen , Li Zhan Guo , Liu Dan
Published: December 2014

Aiming at the ZA type automotive synchronous belt, natural frequency of transverse vibration of automotive synchronous belt is analyzed theoretically by using model of string vibration, and ZA type automotive synchronous belt with belt length 400mm is analyzed by using ANSYS-WORKBENCH software. Solving natural frequency of belt under preload, the results are compared with the theoretical calculation results, and to verify the theoretical calculation results. It provides a basis to design multi-pulley driving system and reduce transverse vibration of synchronous belt in the process of transmission.
Ratchet Effect in a Triple Delta-Kicked Model
Authors: Chen Lei , Xiong Chao , Xiao Jin , Yuan Hong Chun
Published: December 2014

We investigate the quantum ratchet effect in a triple delta-kicked model. Three symmetric flashing potentials alternately act on a particle with a symmetric and homogeneous initial state of zero momentum. Ratchet currents emerge when quantum resonances are excited. Ratchet currents in the triple model may be stronger than those in the previous model. Our work expands upon the quantum delta-kicked model and may contribute to experimental investigation of the quantum transport of cold atoms.
Mobile Robot Path Planning Based on Ant Colony Optimization
Authors: Zhang Bao Feng , Wang Ya Chun , Zhang Xiao Ling
Published: December 2014

Global path planning is quoted in this paper. The stoical and global environment has been given to us, which is abstracted with grid method before we build the workspace model of the robot. With the adoption of the ant colony algorithm, the robot tries to find a path which is optimal or optimal-approximate path from the starting point to the destination. The robot with the built-in infrared sensors navigates autonomously to avoid collision the optimal path which has been built, and moves to the object. Based on the MATLAB platform, the simulation results indicate that the algorithm is rapid, simple, efficient and high-performance. Majority of traditional algorithms of the path planning have disadvantages, for instance, the method of artificial potential field is falling into the problem of local minimum value easily. ACO avoids these drawbacks, therefore the convergence period can be extended, and optimal path can be planned rapidly.
Quasi-Static Finite Cylindrical Cavity Expansion Model for Penetration of Confined Concrete Targets
Authors: Cao Yang Yue Ye , Tan Qing Hua , Jiang Zhi Gang
Published: December 2014

Cavity expansion modeling is an important method for penetration analysis. Based on the Mohr-Coulomb criterion, a quasi-static cylindrical cavity expansion model for the penetration of confined concrete targets was proposed in this paper. Formulas of cavity expansion stresses calculation were obtained and the lateral confinement effects of steel tubes on the cavity expansion stresses were also investigated. Numerical results about the relationships between the ratio of tube wall thickness to tube radius and cavity expansion stresses were discussed.
Research Precision CNC Machine Error Analysis Hot Weights
Authors: Sun Hua , Sun Hua , Ding Yang
Published: December 2014

The level of industrial strength is a measure of an important indicator of a country's pillar industry level is machinery manufacturing, in modern times, the rapid development of manufacturing technology, precision and ultra-precision manufacturing technology has become an important part of modern machinery processing and manufacturing,which CNC machine tools due to its own characteristics and soon became an important part of industrial manufacture. CNC machine tool manufacturing and processing machinery as an important tool, it is an important factor affecting the accuracy of indicators work-piece machining accuracy. Therefore, improving the accuracy of CNC machine tool research has been of great concern. This paper studies CNC machine thermal geometrical analysis accuracy error rights.
The Application of χ2 Goodness-of-Fit Detection Method
Authors: Gao Xiao Cheng
Published: December 2014

This paper is to use the method of test of goodness of fit test of hypothesis. By computing the maximum likelihood estimates of income, the results, to test scores of students to obey normal distribution, and confirm by MATLAB.
Large-Scale Complex Aircraft Part Digital Inspection Technology Based on 3D Model
Authors: Qu Li Gang , Dong Zhi Liang , Zhou Hai Jun
Published: December 2014

This article in view of the present large complex planee parts due to large size,complicated structure, detection method and technical route problem affecting precision and difficult to achieve part, through the use of advanced portable measuring equipment (Metronor light pen measuring instrument, laser scanner and laser tracker device) and product 3D model information to build a reasonable detection technology platform, in view of the different components of the inspection requirements and purposes, using different method to creat the datum, measurement and the assistant tools of different detection technology route, solved the aircraft large, complex parts, assembly process control and quality control in product processing, the difficulty of assembly accuracy control, not only improves the precision of large parts quality and throughout the aircraft parts manufacturing and assembly process reached the assembly efficiency high assembly quality requirements, meet the requirement of aircraft parts assembly process, for large, complex parts of aircraft digital detection technology to lay the solid foundation, further accelerate the process of the development of the current aircraft digital measurement adied assembly technology, improve the efficiency of product processing, lower the manufacturing cost.
The Remote Monitoring System of Highway Slope Safety
Authors: Han Cheng Hao , Zhu Jun Ping , Li Hao , Wang Xing Tong
Published: December 2014

As it is impossible to conduct real-time monitoring on slope condition of highways, a remote monitoring system has been specially designed. Making use of GPRS technology, Labview and solar power, the system has realized nobody monitor on slope anchor system, automatic collection of slope pressure and displacement data. It enjoys advantages such as high-accuracy, real-time monitoring and high-reliability. Among existing effective monitoring ways, massive man-power is needed for on-field work, but real-time monitoring is still left to be achieved.
Redundancy Design in the Digital Instrumentation and Control System Design of Nuclear Power Plant
Authors: Li Hao Ran , Yang Xu Hong
Published: December 2014

First of all, the most important thing in introducing the digitization to the instrumentation and control system of nuclear power plant is its reliability. Then, what needs to do is designing each part of the system combined with the digital characteristic. Only through the system design of redundancy and diversification can the system of instrumentation and control be secure to run.
Hydraulic Support Tail Beam Natural Characteristics Analysis for Coal and Rock Identification
Authors: Cong Xiao Yan , Wang Zeng Cai , Ma Xian De
Published: December 2014

Accurate vibration signals are important for signal analysis in the method of analysis vibration of hydraulic support tail beam. Signal acquisition position needs multiple comparison and optimization on site. Natural characteristics analysis of the hydraulic support tail beam can offer theoretical guidance to optimize sensor installation position. In this paper, impulse hammer excitation was used to analyze the inherent property of the hydraulic support tail beam which provided useful information for setting the signal pick-up place.
Design of Automatic Resistance Tester Based on MC9S12DG128
Authors: Han Xiao Min
Published: December 2014

MC9S12DG128 microcontroller as the core, designed a simple automatic resistance tester. Measuring range is 100Ω, 1KΩ, 10KΩ, 10MΩ four gears, accuracy ± (1% reading +2 word); From big to small scanning way, performing the basic measurement and automatic switching function, At the same time, automatically display a decimal point and unit. Key input module to complete the setup by screening resistance and errors, the microcontroller output PWM control servo rotation speed, in order to achieve different potentiometer speed control; Curve display module real-time displays the measured data, and the rotation angle of the potentiometer is displayed in graph form. Using the powerful function of LCD, display Chinese characters, to increase readability, improve the usability of tester. The system is cost-effective, high reliability, has a good application prospect.
The Research on Real-Time Position Monitoring System in Slurry Pipeline Grading Transmission
Authors: Pan Chun Lei , Yang Yan , Liu Hong Wei , Pu Guang Yue
Published: December 2014

Due to the existence of different grades of mineral in the mining area, the technology of slurry pipeline grade transmission is developing. However, the process of grade transmission will appear the phenomenon that the slurry of different grades are mixed. Therefore, before cutting into different grade slurry, we added special medium in pipeline to separate different grades of slurry. We worked out slurry pipeline transport model by mathematical modeling and building slurry pipeline transport real-time location tracking system. The system was able to distinguish different grades of slurry by adding special medium and tracking the actual location of the head and tail of slurry, realizing real-time position monitoring of different grade slurry.
An Exploration of Fall-Down Detection by Smart Wristband
Authors: Li Song Yuan , Ying An Yu , Yuan Ming Min , Shen Hong , Chen Tian Zhou , Wu Ming Hui , Hou Hong Lun
Published: December 2014

Smart wristband has recently emerged as one of the most popular smart wearable devices. With the help of smart wristbands, we can easily gather and record the user's data of everyday life including exercising, sleeping, diet, etc. In this work, we explore the feature of falls of the old and redesign the smart wristband to detect their movement. We propose a novel algorithm to judge whether he/she stops in a sudden, then produce vibrations through the man-machine interactive interface that provided by the smart wristband. The wearer can judge whether it is misjudged if he is still in conscious, if so he can press a button to stop the shaking or the wristband will give an alarm through communication interface to the medical care center.
Risk Assessment and Risk Warning for Current Transformer Automatic Verification System
Authors: Wang Long Hua , Yao Sheng Hong , Li Ying Hui , Fang Jing , Pan Gao
Published: December 2014

This paper combines methods such as decision-making theory and method, the risk early warning theory and mathematical statistics theory [1,2]. With case analysis, some risk assessment and risk early warning is studied systematically on the automatic low voltage current transformer verification system. First of all, on the basis of risk identification, a indicator evaluation system for the verification system is established. Combined with the structure of the low voltage current transformer verification system, the indicator system is built on both the overall system and various key units of the system. Then risk assessment of the system is conducted. The risk assessment includes state analysis on each indicator, setting up the indicator state probability model, setting the indicator weight; also a confidence level is analyzed. Thirdly, risk early warning is made. The risk early warning threshold is taken as the basis of the early warning, which guarantees the safety and steady operation of the system. Finally, some example verification is done upon the automatic low voltage current transformer verification system, which provides reference on risk assessment and early warning for some enterprises and institutions.
Effect of Scratch Depths on Fatigue Properties of PMMA for Aircraft Canopies
Authors: Shi Xin Hong , Shan Mei Juan
Published: December 2014

A series of fatigue tests is performed for polymethyl methacrylate (PMMA) specimens without scratches and with scratches. The scratch depth is set to be 0.2mm, 0.3mm and 0.4mm, respectively. Based on the experimental results, it can be deduced that contained fatigue limit of specimens with scratches significantly decreases compared to specimens without scratches. Besides, contained fatigue limit decreases gradually with scratch depth increasing from 0.0mm to 0.4mm. Consequently, it can be concluded that fatigue properties of PMMA will decrease when there exists scratch and for scratch depth from 0.0mm to 0.4mm, fatigue property decreases remarkably with deeper scratch.
The Quality Assurance and Online Diagnosis Technology of Automatic Verification System for Transformer
Authors: Zhu Fu , Li Ying Hui , Wang Long Hua , Yao Sheng Hong , Xu Shen
Published: December 2014

Low voltage current transformers are widely used in power system. Such as the records of power consumption, energy trading and industrial load monitoring, is an important measuring component in electric power system of China at the present stage. Whether the low voltage current transformer is accurate or not, related to the power customer's vital interests and the power grid enterprise`s economic benefits, also affects the quality of grid service level and the fulfillment of social responsibilities. To establish a quality assurance system, make the fault detection rate and the percent of pass of the automatic verification system is accordance with the requirements. At the same time, the establishment of online diagnosis system can remind the staff when any failure occurs and help them repairs the fault as soon as possible. It can provide a strong guarantee for the stable operation, management and protection of the automatic verification system.
The Wireless Sensor Networks Applied in the Coal Mine Safety Intelligent Monitoring System
Authors: Jing Xing Peng , Wang Wei Feng
Published: December 2014

In order to reduce or avoid the coal mine accidents, this paper proposes the application of wireless sensor networks (WSN) in the coal mine safety intelligent monitoring system, and discusses the principle and advantages of wireless sensor networks. According to the current situation of low level of intellectualization in coal mine safety monitoring system and the existing problems, this paper proposes the designing proposal and the monitoring mechanism of the coal mine safety intelligent monitoring system, discusses the feasibility, the method and the way of the application of the wireless sensor networks in the coal mine safety intelligent monitoring system.
Back-Stepping Control of SPMSM Drive System
Authors: Sun Hua , Gong Jian Quan , Li You Chen
Published: December 2014

A back-stepping adaptive control strategy is proposed to direct torque control (DTC) of surface permanent magnet synchronous motor (SPMSM) in order to solve some problems existed in conventional DTC. The output of the designed controller makes space vector modulation (SVM) possible, which further ensures the inverted switching frequency to be fixed. The stability of the controller is verified via Lyapunov stable theory. Simulation results show that the presented control strategy can solve these problems effectively and show strong robust to external disturbance and noise.
Application Model Analysis on Automatic System of Fire Detection, Alarming and Extinguishment in Crude Oil Storage Tank
Authors: Song Xiao Dong , Jin Long Zhe
Published: December 2014

In order to realize functions of automatic monitoring, alarming and extinguishment on fire in crude oil storage tank, the paper came up with a fire detection model with multisensor, including selective module with fire feature combination, supervised training module and fire detection module. By regarding PNN as a classifier to carry out tests on effectiveness of the model, the conclusions that the model can reduce the influence of fire parameters’ fluctuation on detection results was drew. Moreover, an excellent fault-tolerant ability was possessed at the same time. Through some confirmatory experiments, The phenomenon was reached that two kinds of parameters in adoptive four parameters have no normal fire signal, but the model still can greatly distinguish from correct fire state.
For Transmission Line Fault Type Recognition Based on RBF Neural Network
Authors: Sun Guo Kai , Yu Jing Xiao , Yuan Meng Yao
Published: December 2014

The study of existing deficiencies, on the basis of overhead transmission line fault detection based on radial basis function (RBF) neural network theory, the fundamental frequency power spectrum as characteristic vector of fault signal, this paper proposes a new method of transmission line fault type identification. The system with complex structure of 10 KV overhead transmission lines as the research object, on the basis of the transmission line model is established by using Simulink software, for different types of short circuit fault simulation sampling, extract fault features, combined with the zero sequence current, as the input vector, establish the RBF neural network for fault type. Results show that: the fundamental frequency in fault signal power spectrum as the feature vector is easy to extract, information is more concise, the RBF neural network in the feasibility in training high, identify accurately and quickly.
Design and Application of Coal Mine Slope Detection System Based on GPS and PLC
Authors: Tian Feng , Lu Xiao Lei
Published: December 2014

This document explains a system of open pit slope deformation monitoring. After calculating data by software of GPS Solution and the system which bases on the signal of GPS receiver obtain information of every GPS receiver. So it can get GIS information of whole coal mine. If there is any abnormal data, it will report to the police timely, and directly control the running of coal miningmachines through PLC. Compared with the technology before, the system has higher automation integration, higher positioning accuracy, gets more responsive and provides more reliable data. It’s the best choice for long-term spatial structure monitoring and condition assessment.
Geometric Design of Capacitive Sensor for Liquid Membrane Detection
Authors: Xue Jing , Li Nan , Yang Xiang Dong
Published: December 2014

A multi-spiral capacitive sensor is proposed to improve the sensor performance, and the relation between the geometric parameters design of the sensor and the sensor performance is discussed. Compared to traditional sensors, under the same measurement conditions, the electrical field distribution of the multi-spiral-shaped sensor is presented. The detail effects of the sensor design parameters, such as gaps between the sensor electrodes, the effective area and the geometry of the sensor plates are qualitative analyzed. The experimental results prove that the complex structure sensor can improve the measurement linearity, signal strength and measurement sensitivity.
Numerical Studies of Reinforced Concrete Beam Damage Detection Based on the Piezoelectric Impedance and Neural Network Technology
Authors: Zhang Jun , Huang Jie , Tang Hong Mei , Li Xian Hua , Zhao Xian Wen
Published: December 2014

Aiming at the problem of reinforced concrete structure crack damage detection, an algorithm of crack damage monitoring based on the piezoelectric impedance technology was presented in this paper. With a piezoelectric coupling beam model was established, the electrical impedance equation of piezoelectric coupling beam was derived. The finite element model of reinforced concrete beam pasting with piezoelectric ceramic piece was established. The effect of different crack depth on the electrical impedance of coupling beam was analyzed. The results show that with the increase of crack depth, impedance peak decreases, spectrum shift to the left; neural network technology data processing method was used to the location identification of reinforced concrete beam crack depth. It proves that the piezoelectric impedance technology can successfully identify the degree of reinforced concrete beam damage to some extent.
Algorithm Design of 3D Measurement System Based on FPGA
Authors: Zhong Wei Feng , Hang Zhao , Yin Yu Heng , Ma Jian Wei
Published: December 2014

Aiming at improving the 3D shape measurement speed and accuracy, the design of floating point algorithm for 3-D shape measurement using FPGA, is proposed. By using four-step phase shifting method for measuring 3D measurement system, using CORDIC algorithm to achieve phase calculation of the phase shift method, the algorithm is realized by Verilog language in FPGA, and to make simulation and verification in Modelsim. The study of 3D shape measurement system have a breakthrough from the design performance and hardware.Finally, the MATLAB simulation proved its effectiveness and viability.The experimental results show that the advantages of high data processing speed, high efficiency and high precision,etc.
Multi-Threaded Technology Apply in Real Time Measurement System of Dual-Camera
Authors: Cui Xi Min , Zheng Ke , Liu Chang Ru , Zheng Qiong
Published: December 2014

Based on multi-thread technology, completed a set of real-time dynamic measurement system apply on binocular vision principle. Real time measurement require of system efficiency higher, multithreaded programming can greatly improve the efficiency of program. Binocular dynamic real-time detection is based on closed-loop control system, puts forward a multithreaded programming technology which is based on the binocular vision high-speed dynamic measurement method. The data acquisition, processing, display are using multithreading technology.
Research on Indoor Watering System with Intelligent Automatic Control
Authors: Wang Ting
Published: December 2014

Researchers designed a set of solar watering system with voice broadcast, LED display and keyboard functions, which bases on soil temperature and humidity, light intensity and other parameters to perform automatic control. The system takes the STC89C52 microcontroller as the core controller. This paper describes the design principle of the system and gives the corresponding circuit diagram; and due to the software programming has features of convenient and flexible, researchers use it to program and control the open and close of solenoid valve in order to meet the design requirements, achieving the aim to watering flowers timely and appropriately.
Measuring Real-Time Physiological Changes by near Infrared Spectroscopy
Authors: Wu Yu Xiang , Huang Min Fang , Song Tao , Xu Guo Dong
Published: December 2014

Near infrared spectroscopy is a promising technique in many scientific fields, but it is still a new measurement in sport science, of which coaches and athletes cannot make good use. In this paper we demonstrate how the real-time physiological oxygenated hemoglobin and deoxygenated hemoglobin concentration changes in the muscle can be measured noninvasively by near infrared spectroscopy and explain what the advantages of it is. The purpose is to reveal the mechanism and potential of muscle oxygen monitoring, which may play an important role in sport training.
The Measurement of Flow Rate in Mud Transporting Base on Cross-Correlation Method
Authors: Jiang Pan , Fan Shi Dong , Wen Quan
Published: December 2014

The paper using electrical capacitance tomography to test the flow velocity and flow rate of the mud transporting in the dredging.The testing process based on two 12 electrodes capacitive sensor sets (ie,the upstream and downstream sensors).The computer can gather the capacitance signals from the upstream and downstream sensor,then by the method of cross-correlation method it can calculate the flow velocity and flow rate of the mud in the slurry pipelines.In oader to verify the measurement error,the system measure the flow velocity and flow rate of the mud in the same situation at the different time (including five different time).Comparing the results of related calculations and the actual measurement it can prove that the cross-relation method is feasible and reliable,the tesing result have high accuracy.
A Monitoring System for Abnormal Water Surface Based on HSI Space
Authors: Wu You Fu , Yang Peng , Wu Jing , Chen Zu Sheng
Published: December 2014

Classing object is an important step for the high-level visions processing tasks, such as security managing, and abnormality event analysis. In this paper, we address these challenges of abnormal water surface monitoring in real-world unconstrained environments where the background is complex and dynamic. In the algorithm proposed, we extract the moment features of water surface in HSI space, and a technique is developed to monitor the abnormal surface of water based on moment features. Experimental results show that our algorithm works efficiently and robustly.
A Novel Portable DCRP System for Tunnel-Wall Deformation Measurement Based on Non-Metric Digital Camera
Authors: Hu Xiang Chao , Zhu Bao Liang , Zhao Jian Wei , Huang Xiao Fei , Yang De Meng
Published: December 2014

Compared to traditional manual-operation method for tunnel-wall deformation measurement, DCRP (Digital Close Range Photogrammetry) technique based on non-metric digital camera is a new emerging and more effective non-contact measurement method. In practical applications, the deformation parameter measurement jobs are throughout the entire process of the tunnel construction to ensure the safety of the project. There are urgent requirements for portability and miniaturization performances of the measurement system to reduce the interaction of measurement job and project construction. A configurable 3D control field equipment was presented, the control points of which could be freely configured according to the practical work conditions and do not need to be re-calibrated. A novel portable tunnel-wall deformation measurement system based on the non-metric digital camera and DLT algorithm was set up. Experimental results showed that the precision of the system for a large section tunnel-wall deformation measurement is better than 0.1‰. The system presented in the paper has the advantages of portability and miniaturization, as easy to implement fast and in-situ tunnel-wall deformation measurements.