bluuebunny/crossref_metadata_2025 huggingface dataset:
Research on Practice and Development of Finance and Taxation Based on the Intergenerational Distribution Model
Authors: Lu Li Ping
Published: September 2014

The full market competition tends to be cruel on the allocation results: one is worthy of almighty, while one is so weak that haven’t enough to eat. This not ideal distribution results highlight the importance of the fiscal and taxation distribution function while still choosing the market economic system. Intergenerational distribution model emphasized the important role of individuals earning power and inheritable wealth these two factors, which has strong explanatory power to a country's current and future fiscal and taxation practice. This paper analyzes the possible theoretical obstacles and practical problem may encountered when applying the fiscal and tax allocation distribution model to the cross generation investigation, and also putting forward suggestions to the problem of how to perfect the tax distribution function.
Research on New Sports Teaching Mode Based on Virtual Reality Technique
Authors: Shang Jian
Published: September 2014

As one of the key technologies of the future development of the Internet, Virtual reality technique is more and more used in the field of Physical Education. Its appearance will subvert traditional sport sports teaching mode and education thinking, and brings a series of major changes for sports education. As for the limitations of modern sports teaching mode, this article is to analyze how virtual reality technique apply to physical education, and build a new sports teaching mode based on virtual reality technique and provide a more scientific, systematic theoretical reference for improving the quality of teaching and optimizing teaching methods with the combination of situational cognitive theory.
The Application of MATLAB Simulation in the Computer Control Technology
Authors: Zhu Shan Hong
Published: September 2014

The combination of Simulation software and specialized courses is an important direction of modern teaching.This paperanalyzes the features of the MATLAB simulation soft Simulink in teaching.An instance of Simulink used for the computer controltechnology teaching is used to show its advantages such as visualization,flexibility and so on..
The Influence of Corporate Culture on the Core Competitiveness in China’s Small and Medium-Sized Commercial Banks
Authors: Yao Feng Ge , Wang Tian Hang
Published: September 2014

The small and medium-sized commercial Banks in the financial system reform in our country plays a very important role, enterprise culture construction is one of the important factors that influence its core competitiveness. To strengthen the construction of enterprise culture, enhancing core competitiveness of small and medium-sized commercial banks focus to strengthen the cohesion, innovation of commercial Banks,to control and influence.Small and medium-sized commercial banks can continue to strengthen enterprise innovation power,quick to adapt to changes in industry environment;Establish the advanced mechanism of choose and employ persons, the "people-oriented" enterprise values; Establish a good brand image, enhance the social influence of establishing effective enhance the core competitiveness of enterprise culture cultivation.
Tourism Supply Chain Coordination through Revenue Sharing Contract
Authors: Zhang Ting Long , Wang Yi
Published: September 2014

In this paper we develop revenue sharing contracts in a scenic spot –travel agency tourism supply chain. We use the Stackelberg game model to formulate the leader–follower relationship. By backward induction, we obtain equilibrium under the non-cooperative revenue sharing contract and the cooperative revenue sharing contract. Results show that the non-cooperative revenue sharing contract doesn’t meet the travel agency’s participation constraint while the cooperative revenue sharing contract can achieve coordination and Pareto improvement. Finally the Nash bargaining game suggests that scenic spot obtains a larger share of the profit growth due to its higher bargaining power.
The Application of System Dynamics in Urban Master Planning
Authors: Dai Yang Chun , Xu Yin Fang
Published: September 2014

In view of the current single analysis method that exist in the overall urban planning, urban planning and social economic development and some problems such as lack of dynamic planning, put forward by using system dynamics theory and the method of combining computer technology, through the establishment of overall urban planning system dynamics model, the quantitative and dynamic study on the overall urban planning and simulation, urban planning and the better way to economic and social harmonious development, and provide more specific to the overall urban planning scheme optimization and scientific basis.
A Study of Knowledge Construction and Mechanism of Cognitive Processing of Tibetan-Chinese Bilingual Pre-Service Teachers’
Authors: Qiu Jing Ling , Li Jing
Published: September 2014

This study was based on cognitive characteristics and cognitive style of teachers in Tibet, using the questionnaire survey and other methods, carried on the investigation to many preservice teachers in Tibet, and on the basis of the theory and technology of knowledge management, explored the mechanism of Tibetan-Chinese bilingual pre-service teachers’ knowledge construction and the cognitive processing model.
On Optimization of Non-Intelligence Factors in College English Teaching in Computer-Aided Language Learning Environments
Authors: Wang Jing
Published: September 2014

With the rapid development of computer technology, combined with the features of computer-aided English teaching, college English teaching has tremendously challenged the traditional teaching mode. This change, however, provides a new perspective for the research of non-intelligence factors in students’ learning process. Based on the definition and importance of non-intelligence factors, this paper briefly discusses the cultivation of college students’ non-intelligence factors in the computer-aided language learning environments and put forward some suggestions to optimize the non-intelligence factors from the perspectives of interest in learning, communication awareness and teamwork ability in order to update our teaching idea and improve the quality of college English teaching and training methods.
Applied Research on Logistics System Efficiency Evaluation Based on Fuzzy DEA Model
Authors: He Bin
Published: September 2014

With the rapid development of modern economy, the logistics has become the artery and basic industry in national economy, as an accelerator to promote the development of the economy. Firstly, this paper analysis the factors which influencing the efficiency of the logistics system, then build the logistics system efficiency index system and using the fuzzy DEA model to evaluate it, finally an example is given to demonstrate the feasibility and effectiveness.
Analysis and Design of Logistics Warehousing Management Information System Based on RFID
Authors: Xu Da Wei , Yang Li Ping , Ren Shan
Published: September 2014

Tracking difficulty generally exists in the traditional warehouse management mode in the business process, the turnover, low efficiency, logistics management information processing is not seasonable and means backward, thus affecting the competitiveness of enterprises, based on the analysis of traditional logistics warehousing management deficiencies, the great advantage of application of RFID technology in logistics field to solve the above problem. The logistics management information system based on RFID is analyzed, based on the traditional logistics business processes analysis, given the information and process structure of logistics business processes, and established a framework method storage business system based on RFID technology.
The Study on Partners Selection Model on the Trust Network
Authors: Hui Ye
Published: September 2014

A necessary condition for efficient operation of the supply chain is having the right partner.This article aims to build evaluation system and selection models of the partner selection in supply chain financing, reduce the overall risk level of supply chain and improve revenue of all parties.The starting point of the supply chain alliance is each node enterprise form a win-win relations of cooperation.It blurred operation boundariesof the traditional enterprise taking the advantages of each node enterprise.Through scientific and effective social division of labor, the effective integration of resources, it establishedpartnership, shared information and ultimately maximized their own interests.Supply chain alliance is a kind of coexistence of competition and cooperation relations, each node enterprises in supply chain has an indispensable role.
Dynamics Analysis and Drive Force Selection for Cylinder Forward Push Lever Lifting Mechanism
Authors: Li Jing Yue , Gao Qin He , Chen Kai Hua
Published: September 2014

The dynamics performance for lifting mechanism is a very important factor that affects its rapidity and stability. This paper gives the dynamics equations for lifting process by using a equivalent dynamics model, and makes dynamics analysis for cylinder forward push lever lifting mechanism in a condition of giving its movement rules, and then acquires curves of changing loads on key joints and acceleration of the load centroid by dynamics simulation using ADAMS for five movement rules. In the end, a better selection is made by contrasting the results. This would give some reference to improving the dynamical performance of the lifting mechanism.
Study on the Role of Computer Internet Information Resources
Authors: Miao An Zhu
Published: September 2014

Nowadays, computer internet information resources are playing a crucial part in our society. Besides production, life, corporation administration, it could also be applied to university education. The reformation of university physical education is dependent on the computer internet information resources for update. Based on the current situation of physical education approaches ,the concept and characteristics of computer internet information resources, this paper aims to focused on the analysis of the role of computer internet information resources in university physical education.
On the Analysis of Web-Based Intelligent English Self-Learning System
Authors: Wang Ming , Zheng Xiao Man , Xie Yu Qian , Yu Shi Ping
Published: September 2014

With the development of Web-based Intelligent Learning System in the information society, we should pay attention to its usage in autonomous English learning. At first, this thesis shows the basic knowledge of Artificial Intelligence and discusses the feasibility of combining Artificial Intelligence with Web-based Intelligent English self-learning system. Second, it analyzes the combination of Expert system with Web-based Intelligent English self-learning system. Finally, it probes into that this new system will promote the revolutionary of the English self-learning mode.
Study on Application of Component-Based Project Management System
Authors: Yu Jing , Zhang Hong , Yang Na
Published: September 2014

Efficiency is the key of project management, and conversion of project knowledge to technology must be realized by establishing an effective management system. Component project management system is based on the enterprise level rather than project manager level. Although the project has unique characteristics, the member companies use the same or similar components in different projects. It converts internal and external enterprise knowledge into technology, and implementation steps are carried out based on the component of project management system in enterprise organization to ensure project technical transformation of the knowledge flow and call mechanism of project management component, in order to realize the application of component-based project management system in enterprise organization.
Study on the Dynamics of the Bubble under the Combined Action of the Bjerknes Effect of the Free Surface and the Buoyancy
Authors: Li Ke Yi , Pei Zhong Cai
Published: September 2014

When the bubble moves in the vicinity of a free surface, the movement will be affected by the buoyancy and the Bjerknes effect. Blake and Gibson proposed the criterion which determined the motion direction of the jet and the dynamics of bubble. They proposed the jet wouldn’t be formed in the condition that . Based on the potential flow theory, boundary element method (BEM) is used to calculate three typical examples in this paper in order to study the dynamics of the bubble under the combined action of the Bjerknes effect of the free surface and the buoyancy. It is found out during the analysis that the Blake criterion is applicable to predict the conditions that and .
Corpus Linguistics-Based Quantitative Analysis of Grammaticalization
Authors: Chen Chi Hua
Published: September 2014

With the development of computational technology, corpus linguistics is becoming a mature discipline. Many western linguists begin to observe the grammatical changes of lexical items and constructions and examine the relative theories with the aid of corpora. This paper deals mainly with the trends of research on grammaticalization, proving that the research approaches are closely related with the development of computers.
Application of New Type DCS Simulation Software
Authors: Chen Yang
Published: September 2014

DCS is also known as Distributed Control System, which is based on multiple microprocessors, a combination of Computer, Communication, CRT and Control 4C technology. It is a new type of Control System. The design principle of DCS is decentralized control, centralized operation and decentralized management, and autonomy and comprehensive coordination. The characteristics of the DCS are control dispersion, information focus; Modular system; the strong ability of data communication; friendly and rich man-machine interface; high reliability. DCS system now is used in more and more industries, after constant improvement and changes, is also more and more powerful, and becomes the most widely used process control system in electric power, chemical, metallurgical and other industries.
Study on Parameters of Deep-Hole Loose Blasting under the Condition of High Stress
Authors: Zheng Zhi Tao , Xu Ying
Published: September 2014

The hole wall crushed and fractured zones length has been derived theoretically,and put forward the calculation formula of blasting crushing circle and radius of the corresponding fracture zone.Corresponding to the deep rock blasting parameters design on the basis of theoretical analysis,then lead to the reasonable parameters.These can provide certain reference design work for coal mine deep rock blasting parameters.
Automatic Control of Pulp pH Value
Authors: Huang Song Wei , Peng Ge , He Li Fang
Published: September 2014

Control of pulp pH value is the key step in the process of washing zinc oxide. Due to the characteristics of large time delay and strong nonlinear, the control of pulp pH value is very difficult. In this paper, aiming at the above problem and according to the features of washing operation of zinc oxide powder, design a control system of a fuzzy controller, secondary fuzzy controller and PI controller.
Bridge Crane Monitoring and Management Control System
Authors: Leng Jian Wei , Man Bin
Published: September 2014

In this paper, the monitoring and management system of bridge crane is developed. The various parameters in the system can be set via client computer, without facing the noisy environment to manage the equipment on site. Through a simple and efficient combination of hardware and software resources, working environment for the staff is improved and downsizing for efficiency is realized. At the same time, executives can keep abreast of the field operation and real-time data, and the system can strengthen the function of the communication between the machine equipment. Practice proves that the system is a kind of convenient, quick, safe and effective management method.
Analysis of Elastohydrodynamic Lubrication of Clamping Ball Screw of All-Electric Injection
Authors: Li Chen , Wang Hong Hui , Ren Xiang Xiang , Liu Ming
Published: September 2014

This paper describes the development of all-electric injection molding machines, as well as the application of clamping ball screw, and elaborates the significance of researching lubrication of ball screw mechanism. The formula for calculating the minimum film thickness of ball screw is induced according to Hamrock-Dowson formula and contact parameters of ball screw mechanism. Using the parameters for a specific ball screw model calculates the minimum film thickness at the screw and ball contact. The lubrication state of ball screw is discussed. It provides a theoretical basis for the rational of ball screw lubrication and proper use.
Key Technologies of the Embedded Deformation Measuring Control System Based on SOPC
Authors: Song Qiu Hong
Published: September 2014

Deformation measurement is an important content of engineering surveying and the main objects of the deformation measurement are civilians, industrial buildings, precision engineering, large dam, bridge and the earth's crust deformation of rock mass. Deformation measurement aims to obtain the deformation data in the process of displacement deformation, and to get the deformation of the status, trend and possible results through the analysis of these data. The existing automatable solution for measuring the deformation all adopt the 3-dimension displacement test, which based on high precision total station, unattended, automatic data acquisition and transmission control mode.
Research of Virtual Machine Based on UG and VERICUT
Authors: Zhu Xiu Mei , Yang Hai Yan
Published: September 2014

The virtual machine tool is a new technology going with the development of virtual manufacturing; it’s one of the key technologies of virtual machine. It possesses enormous economic benefits and widest application outlook, so it’s gradually becoming one research focus. Therefore around the virtual CNC machine tool research subject, the NC machining simulation key techniques were studied. Based on the development of FV-1000 virtual machine tool platform, combined with UG and VERICUT software to complete a variety of different functions in instances of multiple CNC machining simulation.
Impact of Connecting Reactor on Stable Operation of Chain SVG Device
Authors: Liu Zheng Dao , Xi De Sheng , Liu Qiang , Shi Lei , Wang Shu Han , Wang Ji Hao , Chen Jia Yong
Published: September 2014

Chain SVG device is connected to the power grid via the reactor which is also referred to as connection reactor. Compared with other reactors of reactive compensation devices, It’s not like the serial filtering reactor which simply provides a specific quantity of inductive reactive power, or parallel phase control reactor which provides continuously adjustable inductive reactive power. The connection reactor in SVG is related to the impact of SVG on the power grid, the impact of the power grid system on SVG, and in particular, the compensation capacity and effect of SVG. Therefore, during design, requirements of SVG and electrical property of the compensated system should both be considered. In this paper, the impact of the connection reactor on SVG stable operation is analyzed in detail. The design principle that when choosing the reactor parameters, the impact on power unit DC side voltage should be prioritized is proposed, and simulation verification is conducted by using of PSCAD software. A reasonable reactor is selected for a 10kV SVG based on the conclusion. The actual operation result verifies the rationality of design.
Research on Three-Dimensional Displaying Technology of Rotary Entity Based on IGES
Authors: Pang Kai Min , Zhang Ying , Shi Xin , Zhao Wen Jie
Published: September 2014

For realizing the three-dimensional display of machine parts, in UG5.0 graphic drawing environment, it provides an interactive experimental method to carry out the display of IGES graphics, taken as the data-exchanged interface. Based on depth analysis of IGES, with VC++6.0, the information of all figures could be obtained. Through data processing, three-dimensional data of rotary entity could be generated, which is based on 3D data of lathe turning IGES rotary entity. Afterwards, OpenGL graphic processing technologies (with light, material, textures, et al.) were applied on the three-dimensional display of graphics input from files or program modules. Finally the parts designer could get a full view of machine parts, going on with some proper modifications.
Spindle Optimization Design of the Rice Mill Based on ANSYS Workbench
Authors: Shi Yan Hua , Zhang Guo Quan , Zhang Ning , Wang Fan , Huang Zhi Ping
Published: September 2014

During the rice mill structural design process, static analysis is an extremely important field, not only decide to what the structure size is, but also for the subsequent fatigue analysis, providing the basis for the overall stability analysis. Now the traditional domestic design mainly based on the empirical design, which is resulted in Performance indicators lag behind of the rice mill, focusing on the performance of vibration is too large and the structure is irrational. Therefore, optimizing the structure of the rice mill to improve the vibration situation has important significance. Using SolidWorks software to build the three-dimensional solid model of the spindle, and then import the model into ANSYS Workbench to establish the finite element analysis model, through the finite element and modal analysis of the results obtained the stress and strain distribution of the natural frequencies and mode shapes characteristic, providing an important basis for further design optimization of the rice mill structure.
Hammer Rod Optimization of Large Tonnage Air Hammer
Authors: Guo Yin Sai , Zhang Yi , Cheng Ming Ke
Published: September 2014

The hammer rod of large tonnage air hammer is easily damaged during operating process. Positions on the hammer rod, which may be broken, are not determined by linear fracture mechanics. Meanwhile, it does not provide possible measures for improvement. According to the actual weight of the hammer rod, about 0-10% larger than its nominal weight, an improved design method is proposed in the paper, which does not affect the performance of the air hammer. This method effectively solves the problem of breaking hammer rods and improves their service life.
Design of DSP-Based Automatic Seam Tracking Underwater System
Authors: Yang Fu , Zhang Wen Ming , Jiao Wan Cai
Published: September 2014

It is high difficult to control the underwater welding because of the effect of water and the leak proofness of the weld devices which is a troubling problem. In this paper, a DSP-based automatic seam tracking system for underwater welding is designed. This system has the advantages of simple hardware structure, low-cost, rich function software, friendly human-machine interface, and easily realizing. And the work of this paper can be used for further research in underwater welding seam automatic tracking.
Study on Dynamical Simulation of Railway Vehicle Bogie Parameters Test-Bench Electro-Hydraulic Servo System
Authors: Lan Zhi Kun , Su Jian , Mei Heng
Published: September 2014

Dynamical mathematical model was established for accurately positioning, fast response and real-time tracing of electro-hydraulic servo control system in railway vehicle bogie parameters test system with elastic load. The model could precisely control the output of position and force of the hydraulic cylinders. Induction methods was proposed in the paper. Dynamical simulation verified the mathematical model by software simulink. Meanwhile the key factors affecting the dynamical characteristics of the system were discussed in detail. Through the simulation results, high precision is obtained in application and the need of real-time control on the railway vehicle bogie parameters test-bench is realized .
Design a Temperature Control System Based on Labview
Authors: Cheng Huan Xin , Zhang Kai , Cheng Li
Published: September 2014

Temperature is the main environment parameter to industrial and agricultural production. To timely and accurate measurement is having great significance. A lot of production equipment, thermal equipment and large warehouse need for temperature measurement. Therefore, design a kind of ability of temperature automatic detection system has widely application value. This design is mainly on the Labview virtual instrument platform to develop a temperature acquisition system. We use good interface of Labview for data acquisition which is real-time display data in Labview. It can realize serial port function and will transfer to PC owners system. The data collected in the Labview environment for data processing and analysis, and it can accord the analysis of the results to control the singlechip microcomputer temperature.
Adaptive Algorithm Based on Wavelet and SVM for Turbopump Fault Detection
Authors: Hong Tao , Yang Shuo
Published: September 2014

An adaptive fault detection algorithm based on wavelet and SVM (Support Vector Machine) is proposed for LRE(Liquid Rocket Engine) turbopump real-time fault detection. The algorithm firstly divides the historical signals into some segments by reasonable step length. Then for each segment it gets M-layer detail signals through Daubechies wavelet transform. Thirdly it divides every layer into K average segments and calculates there RMS values, gets M RMS sequences of detail signals. After that it constructs M-dimensional RMS vector as fault feature by extracting RMS values at the same position in every RMS sequence, and extracts all the fault feature vectors of historical signal to construct SVM training sample set and then obtains SVM classifier. At last the classifier will be real-time updated by a reasonable method in the testing process to improve the classification accuracy. To validate the algorithm, a track of the vibration acceleration signal of a certain type of turbopump was chosen as the test object. The test results showed that the algorithm met its demands of accuracy and real-time performance.
Investigation on Grain Refinement of AZ31 Alloy by Self-Inoculation Method
Authors: Xing Bo
Published: September 2014

The grain refining technology of AZ31 alloy by using self-inoculation method (SIM) has been developed. Results indicated that SIM significantly decreased the grain size of as-cast AZ31 billet from 287 to 58 μm, changed the morphologies and size of the β-Mg17Al12 phase and decreased the solute elements segregation along grain boundaries. The average grain size is sensitive to the diameter of a cast rod; the microstructures of the large diameter rod are relatively inhomogeneous. The grain refinement was mainly attributed to the grain multiplication which derives from heterogeneous nucleation induced by self-inoculants and free crystals and dendrite fragments enhanced by fluid director, combined with a high solidification rate of alloy melt in the metal mold.
Experimental Study on Bond Strength between Polymer-Modified Concrete and Plain Concrete
Authors: Zhang Xin Le , Guo Xiao Hui , Cao Hai
Published: September 2014

Polymer-modified concrete is widely used for the rehabilitation of old damaged structures mainly due to its good adhesive performance. The interfacial bond strength between polymer-modified concrete and plain concrete should be measured carefully in order to keep both sides work together. To overcome problems existed in the test of bond strength between two types of concretes, a split apparatus was designed. Experiments on bond strength between plain concrete and polymer-modified concrete with different polymer contents and different interfacial treatments were conducted utilizing the newly devised apparatus, and a series of complete and correct results were obtained. The experimental results indicate that when the surface is treated with 10% polymer solution, the bond strength between plain concrete and polymer-modified concrete with polymer-cement ratio at 15% is better than those in other cases.
The Manufacturer of Anti-Skid Test Equipment for Asphalt Pavement and its Test Methods
Authors: Xiong Jian Ping , Gong Wen Jian , Huang Ya Ting
Published: September 2014

In order to seek reasonable evaluation methods of anti-skid function on asphalt pavement, we summarized many domestic skid resistance and durability test equipments for asphalt pavement and it’s test methods. Analyzed its advantages and disadvantages and discussed the current anti-sliding and anti-wear test method listed in specifications,which have great significance on the future development of anti-sliding test equipment and the improvement of the anti-sliding test method.
A Study of Gearbox Residual Life Prediction Method Based on Stochastic Filtering and Recursive Expectation Maximization Model
Authors: Liu Xin , Jia Yun Xian , Zhou Jie
Published: September 2014

Residual life prediction is a critical and difficult problem in condition-based maintenance decision-making. Aiming to deal with the problems that practical data is limited and the estimation of initial parameters is not accurate in maintenance practice, a residual life prediction method for gearbox based on stochastic filtering (SF) is proposed. In this method, recursive expectation maximization (REM) algorithm is introduced to update the parameters, and a maximum likelihood estimation method is designed to update the unknown parameters. Finally, the validity and practicability of the model are validated by an example.
Analysis of Energy Transfer and Distribution Characteristics of the Gearbox Vibration Transmission Channel Based on Energy Finite Element
Authors: Li Shu Ying , Huo Rui , Cui Xing Ke , Liu Cui Ping
Published: September 2014

For a wide range of applications of gearbox system,starting in gear box system vibration mechanism and the analysis of vibration transmission path,this paper establishes a analysis model of gearbox elastic coupling system.Analyzes energy transfer characteristic of the complex coupling structure of gearbox system based on admittance theory.From the perspective of energy distribution,analyzes of the characteristics of energy distribution of the different parameters and different structural arrangement.
Computational Analysis of Flow Dynamics in a Four-Stroke Internal Combustion Engine
Authors: Gao Shian , Blunt Peter , Simpson Robert
Published: September 2014

This paper presents a predictive investigation using CFD techniques focusing on the tradeoff between steady-state airflow considerations and unsteady transient pressure wave tuning of a single cylinder IC engine. An axisymmetric CFD model has been developed to initially examine the steady-state flow characteristics generated by different inlet entry radii. This has then been further developed to incorporate the unsteady, transient pressure wave effects caused by the motion of inlet valve and piston. Detailed simulation results, which are validated against experimental data provided by Group Lotus plc, are reported here and quantitative conclusions are drawn for maximising airflow in future inlet manifold design.
Experimental Study of Landing Gear Simulation Test-Bed
Authors: Shang Miao , Lin Guo Min , Zhang Wen Guang , Zhou Fei
Published: September 2014

The basic composition of the landing gear simulator test-bed is discussed; The open loop control system experiment, closed-loop light control system experiment, the closed loop load control system are completed for the test system; The reliability and stability of test-bed system are validated by the experiment; The technical indexes of the landing gear simulation test-bed and the design requirement of electric control system are validated.
Fault Diagnosis for the Oil System of Aviation Piston Engine Based on BP Neural Network
Authors: Feng Yan
Published: September 2014

Introduced the composition and the principle of operation of the oil system of aviation piston engine. Analysed common faults of the oil system including high oil pressure indication,low oil pressure indication, high oil temperature indication and excessive oil consumption.Failure causes for above faults were analysed separately.Symbols were stood for failure modes and failure causes. Constructed the BP neural network.Symbols of failure modes were inputs of the BP neural network,and symbols of failure causes were outputs of the BP neural network.Builded a mapping relationship between failure modes and failure causes by training samples studying.Four training samples were selected based on common faults and fault effects.A given mode was as a input of the network,and by adjusting connection weights and the threshold of every neuron,an ideal result could be gotten.Then other mode was as a input of the network which carried on studying until the epochs was 369,and the mean squared error fast converged and the value of mean squared error was.The failure causes for the given failure mode can be confirmed by this BP neural network.By engineering verification, the BP neural network is applicable to fault diagnosis for oil system of aviation piston engine.
Mixture of Oil and Diesel as Fuel for Internal Combustion Engine
Authors: Pexa Martin , Mařík Jakub , Čedík Jakub , Aleš Zdeněk , Valášek Petr
Published: September 2014

This paper deals with the use of vegetable oils as fuels for internal combustion engines. The use of pure vegetable oils is usually not possible due to its properties, especially for higher density and viscosity. If vegetable oil is used as 100% fuel, then it cannot do without adjustment of the engine. Without adjustments of the combustion engine the fuel can burn blended with vegetable oil so it does not significantly exceeded the requirements of the internal combustion engine to its properties. Application of admixtures of rapeseed oil and oil from Jatropha Curcas in ratio 5.5 and 19.7% provides minimal to almost no effect on the performance parameters of the internal combustion engine, but positively translates to reduce emissions (particularly smoke and carbon monoxide).
Modeling of the Adsorption Mechanisms and Selectivity of the Molecular Imprinted Particles for Norfloxacin
Authors: Li Song , Fang Lei
Published: September 2014

Molecular conformation and binding modeling were built by Hyperchem 8.0 computational chemistry package and the optimum molecular conformation was obtained by molecular mechanics optimizer. It was found that there were two types of binding sites for norfloxacin on the molecular imprinted particles (MIPs).One was the hydrogen bonds between oxygen atom of MIPs with the carbonyl group of norfloxacin and the other one was the hydrogen bonds between oxygen atom of MIPs with the hydroxyl group of norfloxacin. Moreover, the energies change of the molecules were1.69 x106 J/mol,1.80x106 J/mol and 5.37x106 J/mol and 2.54 x106 J/mol during the binding process of the norfloxacin (NOR), ciprofloxacin (CIP), bisphenol A (BPA) and tonalide (TON) onto the MIPs, respectively. The result indicated that the MIPs had a good selectivity for NOR and CIP than BPA and TON.
The Comparison of Passive UHF RFID Tag Chip
Authors: Xie Ya Juan , Liu Cai Feng
Published: September 2014

This paper introduces the characteristics of passive uhfrfid tag chip through enumerating the contrast method, including alien higgs-4, nxp g2xm and impinj monza5. And the paper explains the chip impedance, memory allocation in detail. The conclusion is that the performance exist difference between each chip. Understanding the performance of the chip is helpful to design a suitable antenna. To provide reference for uhfrfid label antenna design.
The New Technology of Hydraulic Fracturing Soft Coal Rock Permeability Improvement
Authors: Chen Xue Xi , Zhang Yan Ke , Xu Yong , Bi Rui Qing
Published: September 2014

According to the low intensity, good plasticity in soft coal seam, the effect of direct fracturing to increase permeability was not ideal, the new technology of hydraulic fracture soft coal rock was proposed, which increased coal seam permeability. Its technical principles and characteristics were researched. Water injection pressure was analyzed, including injection time, parameters of the technology and so on. Field application experiment and effect of inspection were conducted. The results showed that the concentration of gas extraction increased 4.3 times, and the gas extraction flow increased 6.2times. The technology has a good effect of fracturing and advantages in enlarging the released area and decreasing diffusion seepage resistance of coal seam. Most important, the technology has broad application prospects in soft coal seam.
Optimizing of Integral Impeller NC Program Based on the Material Removal Rate
Authors: Li Shi Chao , Wu Song Lin , Liang Yan Kun
Published: September 2014

It is a general processing technology that multi-axis NC machine tools is used for machining impeller at present. In order to improve the machining accuracy of the five-axis NC machine tools, the paper analyzes the computing interpolation error of the Multi-axis CNC system in detail. Some of the measures of tools selection have been proposed in purpose of diminishing the accumulative error of the system. The paper also establishes the optimized objective function to optimize the process parameters of the CNC machining based on the material removal rate. All these measures will improve the machining efficiency significantly and increase the stationary of the machining process.
Induction Lightning Current System Design
Authors: Zhang Pin Cui , He Wei , Zhang Long , Lu Ping
Published: September 2014

Lightning protection plays a significant role in modern communication system and other electric instrument. The study of lightning current waveform has important implication for lightning protection, but the direct measurement of lightning current is too risk. So the induction lightning current waveform surveying arises at the historic moment. Depending on the capacitance of the simulated lightning discharge process based on the protel designed test circuit using self-made roche induction coil, the lightning current waveform had been simulated in the paper. Finally, by testing the system, we got a series of waveform data, and it is concluded that the characteristics of the induction lightning current under different pressure. These results would provide the theoretical basis for lightning protection.
Study the Process of Equal-Channel Angular Pressing with Quasi-Ultra-Small Angles of Joint Channels Using Computer Modeling in Program Complex DEFORM
Authors: Krivtsova О. , Talmazan V. , Arbuz А. , Sivyakova G.
Published: September 2014

In this paper a computer modeling using program complex DEFORM of various models of equal channel angle pressing is made. Also there is a description of opinion of ECA-pressing called “ECA pressing with quasi-ultra-small angles of joint channels” and shown advantages of this opinion.
Wind Action on a Mobile Elevating Work Platform (MEWP) in Operational Conditions
Authors: Augustyn Marcin
Published: September 2014

The paper presents a brief presentation of researches done on a mobile elevating work platform model in a wind tunnel. The major aim of the tests was to define aerodynamic coefficients of the platform in different conditions of operation and for a variable angle of wind attack. The results may be useful in the designing process of the mobile elevating work platform.
An Universal Model of Photovoltaic Arraywith the Function of MPPT in PSCAD
Authors: Wang Lin , Yang Wei Xiang , Wei Li Si
Published: September 2014

A simulation model about photovoltaic array which can track the maximum power point with the function of changing the it's resistances' structure is developed based on PSCAD. By the simulation of connecting the model with a associated electro circuit, we can draw the conclusion that the model can almost review the character of the actual device.
Key worlds: photovoltaic array; MPPT; PSCAD; simulation
Design of an Electric Metering Seal Application System Based on Cryptographic Technology
Authors: Zhai Feng , Zhao Bing , Cen Wei , Cao Yong Feng , Sun Zhi Qiang , Liang Xiao Bing
Published: September 2014

According to such problems as the electricity metering seal’s pry-prevention and falsification-prevention performance is relatively weak, whose management technology is also relatively out of date, this paper has designed a much more security electricity metering seal application system based on the cryptographic technology and RFID technology. This system not only can realize the real-time monitor and manage to the electricity metering device and seal but also can ensure electricity metering seal’s falsification-prevention performance, key data’s integrity and confidentiality by leading-in advanced data cryptographic technology and adding security encryption device. It has great practical value.
Design of Mobile Robot Remote Control Client
Authors: Bian Ming Ming , Zhang Li Jian , Bian Lin Lin
Published: September 2014

The application of computer remote control technology become the future trend of the development of enterprises. In this paper, the use of international popular client / server structure and the socket and multi thread network data communication based on Visual C++ 6 programming language complete the system design, realizing the remote client to control the mobile robot.
Design of PWM DC Motor Control System Based on Single Chip
Authors: Zou Ai Cheng , Wang Qun Ying , Cao Yi Jie
Published: September 2014

DC motor control system is an important portion of NC flame cutter height automatic adjustment device. The article made the program of DC motor control system in height automatic adjustment device, and designed the PWM DC motor control circuits. Pointed out the key problem of the system software and solved it.
Development and Trend of Intelligent Monitoring System for Greenhouse
Authors: Shi Xiao Yan , Ye Hong Bao , Li Dong , Xu Zhi Fu
Published: September 2014

Intelligent greenhouse cultivation and management is one of the most important technologies for continuous production of agricultural products. This article deals with the development history, status, key technologies and trend of greenhouse intelligent monitoring system£¬ makes analysis on the existent problems and developing trend so as to provide reference for the growth of China's facility agriculture intellectualization£®
Research of the Piezoelectric Composite Active Control
Authors: Huang Kun , Peng Wei Cai , Huang Zhi Xiong , Shi Min Xian , Wan Guang Bing
Published: September 2014

Instantaneous signal and alternating signals are as driven signals, using PID control, change control coefficient P's size, The stopping time of impact force under instantaneous signal with the piezoelectric ceramic content increases, the stopping time is reduced; after applying active control, the stopping is shorter than that is not applied. After applying the alternating signal to force the cantilever beam, the driving effect of the ceramic sheet is located in a cantilever position A, B, C, the effect of C under controlling is at best. The effect of two driven ceramic sheets is better than that of three driven ceramic sheets, the best control position is B+C.
Straight Path Following Control for an Under-Actuated AUV
Authors: Ye Yu Ling
Published: September 2014

An engineering approach of path following control for the type of under-actuated AUV, such as REMUS, was proposed. The path following control was separated into 2 parts: heading guidance and heading control. The heading guidance was designed based on the cross-track error and line of sight guidance, and sideslip angle was proposed to compensate the disturbance of the ocean current. The turning criterion was proposed when the vehicle approach the waypoint. A PD control algorithm was presented to the heading control and its parameters variable with the speed. Simulation and field experiments data show that the vehicle follows the path accurately in the environment of current and different speed, and the vertical rudder keeps steady without large scope and high frequency oscillation which is fit for the long-time working AUV. Engineers can debug the parameters based on the experiment data efficiently for their explicit physical meaning.
Research of Formulation and Processing of Hydroxyl-Terminated Polybutadiene (HTPB) Propellants
Authors: Bekhouche Slimane , Luo Yun Jun
Published: September 2014

Solid composite propellants are extensively used for propulsion of rockets, missiles and space applications. The composite propellant is a polymeric matrix in which the oxidizer and fuel particles are embedded in a polymeric binder. Different composite propellant mixtures have been prepared using ammonium-perchlorate (ratio 70:30) as oxidant and mixture of aluminium powder (ratio 50:50) as metal component. In the present work, RDX (Cyclotrimethylene trinitramine) has been used in successive increments replacing AP (Ammonium Perchlorate) in number of batches by varying the percentage of solid loading, and studied their different properties such as viscosity build-up, mechanical and ballistic properties.
The Research of a Piezoelectric Valve Positioner Control Algorithm
Authors: Li Fei , Fan You Jun , Zhao Hua Tian
Published: September 2014

The dynamic characteristic of smart valve positioner is nonlinear in its operational range, while the traditional five-step method or a single switch PID control algorithm could not meet a nonlinear model uncertain control system for high-speed, high-precision control. This paper presents a new control algorithm which five-step switching method with backward PWM and PID control method combines, it realize that the opening degree of the valve is fast and accurate positioning under conditions in nonlinear. The experimental result show that the control algorithm is better than the five-step control method and PID control algorithm, and the algorithm is simple, high reliability, speed control, and have certain adaptive and robustness, valve positioning accuracy to meet the control requirerments.
Introduction to Automatic Shutdown System for Flutter Test of High Speed Wind Tunnel
Authors: Yu Li , Lv Bin Bin , Yan Yu , Guo Hong Tao , Zha Jun , Zhang Chang Rong
Published: September 2014

This paper introduces an automatic shutdown system for model protection during the flutter test in high speed wind tunnels. This automatic shutdown system can be used to determine any unsafe condition through model flutter signals before triggering shutdown of wind tunnels, solving problems of delayed response and mistakes happen during manual measurement of subcritical state of model flutter. The reliability and effectiveness of this system have been proved good via wind tunnel tests, hence the possibility of damage to the model caused by flutter during the flutter test of high speed wind tunnels can be decreased.
Design and Application of Energy Saving Safety Control Regulator of AC Arc Welding Machine
Authors: Wu Min , Xiong Xiao Gang
Published: September 2014

With the rapid development of our economic in recent year, electricity supply becomes tighter gradually. As when electric welder in ballast, the loss of power is much and factor of power is low which leads to the quality of power supply is poor and accidents of electric shock occurred. In order to solve such prominent problem, we research and the design of energy saving safety control regulator of electric welding machine, it will eliminate the loss of ac welder and improve the quality of power supply, ensuring the safe of the welders. The paper proved the correctness and effectiveness of the design through the installation test at last.