bluuebunny/crossref_metadata_2025 huggingface dataset:
Investigation and Simulation of Supersonic Gas Jet for Martian Dust Removal
Authors: Wang Zhen Lin , Xu Heng , Yang Rui Qiang , Guo Wen Jin
Published: August 2014

The Martian dust is a serious threat to the spacecraft and rover. It would hinder the functioning of equipment and limit mission duration. The paper introduces a system, which uses supersonic gas jet formed by a Laval nozzle to blow off the accumulated dust. The related parameters have been investigated and the flow fluid field has been simulated.
The Simulation Calculation of Temperatures on Valve Seats of Combustion Engine and its Verification
Authors: Brabec Pavel , Dittrich Aleš
Published: August 2014

The paper deals with the load of the head of the engine. Head of SI engine, which has molded seat of intake and exhaust valve, is one of the most complex parts of the engine. It contains intake and exhaust ports, spark plugs, timing of the mechanism and channels for cooling and lubrication. Much of the final form of this component also contributes its load, which is both heat and mechanical. The biggest influence on the deformation of embedded saddles exhaust valve has a temperature distribution in the cylinder head. These temperatures are influenced by many factors, especially temperature and coolant flow, load and engine speed, which affect the combustion process and exhaust gas temperature (the engine mode is constantly changing, therefore the thermal load on the valve seats is different). In our paper we will only deal with the heat load of the cylinder head of the engine. Currently, the most common use of appropriate software tools for determining the distribution as voltage or temperature. The simulation results may not always be identical to the actual situation, so it is necessary to perform by verification. The paper described measurements of temperature on the inserted valve seats cylinder head of the engine.
Description of Sequences of Rhythmic Motor Primitives
Authors: Gorbenko Anna , Popov Vladimir
Published: August 2014

Various problems of the task-level robot learning from demonstration has received substantial attention recently. Among other, we can mention investigation of motor primitives. In particular, different rhythmic motor tasks are very important. Recently, the approximate period problem was considered as a model for the investigation of sequences of motor primitives. In this paper, we consider the approximate period problem and some modifications of the problem for the investigation of sequences of rhythmic motor primitives.
Sensitivity Analysis of the Air Flow inside a Single Cylinder Engine for Different Turbulence Models Using CFD
Authors: Amorim Felipe Grossi L. , Ribeiro Jean Helder M. , Vaz Marília Gabriela J. , Valle Ramon Molina
Published: August 2014

Theincrease of greenhouse gases emissions makes necessary to improve the comprehension of the Internal Combustion Engines operation. One of the factors that affect the combustion in these engines is the turbulence, since it can raise the quality of the fuel-air mixture inside the combustion chamber. However, when modeling internal combustion engines using CFD, the turbulence model choice is always a relevant problem. The present paper analyzes the results for three different turbulence models (k-ε Realizable, RNG k-ε and Menter k-ω SST) ina single-cylinder engine geometry, comparing numerical and experimental pressure data. For this experiment, the k-ε models obtained more trustable results than the k-ω SST, using less computational resources. The models achieved good results for eddy recirculation inside de cylinder and in regions of free shear flow at the valve openings, which makes possible to observe the correlation between parameters such as tumble and turbulent kinetic energy.
Real-Time Monitoring of Harmonic Currents: A Case Study of a Shopping Center
Authors: Nakmahachalasint Paiboon , Buain Suwicha
Published: August 2014

This paper presents a case study for the design and implementation of real-time harmonic monitoring at the main 3-phase 4-wire distribution system in a shopping center. The implemented monitoring system automatically acquires real-time data from a power-quality measuring instrument over Ethernet connection. The acquired data are subsequently stored in a database and can be retrieved for further processing and analysis. As a result, harmonic currents of all three phases and a neutral can be monitor up to 31st order.
Design and Non-Linear Simulations of a Fault-Tolerant Flight Control
Authors: Almutairi Saif H. , Aouf Nabil
Published: August 2014

In this paper, a Fault-Tolerant Control strategy (FTC) was applied using a linear dynamical model of a business jet aircraft subjected to actuation faults. As a baseline controller, an optimal linear quadratic tracker was designed to control some selected aircraft motion variables. Faults due to the loss of effectiveness were assumed. Then, the FTC was built upon a compensation of faults into the dynamical equations. The complete system was tested using nonlinear simulations of the aircraft dynamics. The results demonstrate the ability of the FTC strategy to maintain the stability of the system and to improve the tracking performance for a large scope of faults.
Modeling and Analysis of Kinetic Characteristics of a Gear-Linkage Mechanism
Authors: Zhang Xiang , Pan Cun Yun , Chen Hu , Zhang Wei Yang , Zhang Wen Bo
Published: August 2014

A gear-linkage mechanism, composed of a planetary gear mechanism and a four-bar mechanism, has the characteristic of step-cyclical output rotation under a reasonable geometric parameters. The analysis of stepping movement of the base unit and the motion characteristic of the combined mechanism was made, and the parameter equation was figured out. Motion simulation was carried out to analyze the influence of transmission ratio on the variation of the output shaft angular displacement, which proved that the output steps was in correspondence with , and as value of increasing, the rollback of the output motion was more apparent. The gear-linkage mechanism can be applied to engines, pumps and compressors.
Modelling and Comparison of Compressor Performance Parameters by Using ANFIS
Authors: Yazar Isil , Kiyak Emre , Yavuz Hasan Serhan
Published: August 2014

Developing a robust control algorithm for an aircraft engine requires an accurate nonlinear mathematical model. In formation of a nonlinear mathematical model, some components like compressor and turbine are modeled by using component maps. These maps show the connection between the compressor performance parameters. To show this connection, map data is digitized by using some techniques. In this study, we digitized a compressor map data by using ANFIS (Adaptive Neuro Fuzzy Inference System). RMSE (Root Mean Square Error) were calculated for different types of FIS (Fuzzy Inference System) structures constructed with different number of membership functions. The model was formed by using all valid data which is collected from a small turboprop engine compressor. Results demonstrate that the designed ANFIS structure can serve as an alternative model to estimate both online and offline compressor performance parameters.
Nonlinear Fuzzy Robust PCA Algorithm for Pain Decision Support System
Authors: Mansor Muhammad Naufal , Junoh Ahmad Kadri , Daud Wan Suhana Wan , Wan Muhamad Wan Zuki Azman , Idris Azrini
Published: August 2014

This paper describes particular pain events to be located as in infant face images with feature extraction algorithm. Nonlinear Fuzzy Robust PCA (NFRPCA) feature extraction is implemented to test its effectiveness in recognizing pain in images. In this work, two classifiers, Fuzzy k-nearest neighbors (Fuzzy k-NN) and k-nearest neighbors (k-NN) are employed. Result shows that the NFRPCA and classifier (Fuzzy k-NN and k-NN) can be used for the recognition of infant pain images with the best accuracy of 89.77%.
Study on Improving the Degree of Size Precision of Rack Tube
Authors: Yu Hao , Kim Dong Hong , Jung Dong Won
Published: August 2014

The tube is a significant machine part in a car.It provides the important contact and fixed functions during the steering of a car. An inaccurate tube size cannot provide steering stability. For example, if the difference in diameter between the front and back of a tube is very large, the car moving at high speeds will be to swing, although steering would still be possible. A car can be made safer at high speeds by controlling the difference between the front and back diameters of the tube. High temperature welding of various parts to the tube, heats the tube almost 2,000°C, so the consequent deformation of the tube must be controlled.
A Numerical Study Onfire Suppression of Water Mist in Microgravity
Authors: Han Xue , Qin Jun , Tao Jun Jun , Feng Ming Hui
Published: August 2014

Water mist technology has been developed and regarded as a promising substitute fire-extinguishing agent in spacecraft. In this paper, a numerical simulation method is introduced to investigate the effect of water mist size, velocity and flow rateon the fire suppressionefficiencyin microgravity. The fire extinguishing efficiency is better for the finer water mist in microgravity due to better heat transfer and more rapid vaporization. The evaporation cooling is the dominant mechanism of fire suppression in microgravity.As for the water mist velocity, the performance of fire suppression is affected slightly in microgravity. The results on the effect of water flow rate show that the flow rate should be higher than a critical value to suppress the fire effectively.
On Approximation of Reserve Factors Dependency on Loads for Composite Stiffened Panels
Authors: Sterling Grigoriy , Prikhodko Pavel , Burnaev Evgeny , Belyaev Mikhail , Grihon Stephane
Published: August 2014

We present two level approach to build accurate approximations for Reserve Factors dependency on loads for composite stiffened panels. Such dependency is continuous non-smooth function with complex form plateaux regions (i.e. regions where function has zero gradient), defined on low dimensional grids. The main problem that arises if one tries to construct global approximation in such case is the occurrence of Gibbs effect (i.e. harmonic oscillations of prediction) near the borders of plateaux that may significantly deteriorate approximation quality. Viable existing solution: approximation based on linear triangular interpolation avoids oscillations, but unlike the proposed approach it provides model that is not smooth outside plateaux regions and generally requires larger sample size to achieve same accuracy of approximation.
The Influence of Raft Foundation Temperature Stress Calculation by Radiation Condition
Authors: Zhao Li Jun
Published: August 2014

Raft foundation was researched in this paper,basing on the traditional “Wang Tiemeng Method”,the influence of temperature stress calculation by radiation condition was put forward emphatically. According to analysis the two calculation results, obtains the more precise temperature stress calculational method. Consequently the of concrete crack calculation and analysis result can be more precise and reliable.
Finite Element Analysis of Mechanical Properties of Reinforced Concrete Cross-Shaped Column Node
Authors: Han Chun Xiu , Zhou Dong Hua , Yang Yan Hua , Huang Sheng Jiang
Published: August 2014

Studying on a cross section column of reinforced concrete special-shaped column frame structure with finite element analysis, mechanical process from loading to destruction is obtained, then fracture mechanism category, node failure destruction mode and deformation mode of the joint core, which provide certain theoretical basis on the property damage type of special-shaped column and cross section design.
Experimental Research of Recycled Tires-Asphalt Sands Base Isolation Device for Low-Raise Masonry Structure under Vibrating Load
Authors: Song Meng Li
Published: August 2014

In the program, dynamic experiments were carried out on two scale models of the recycled tires-asphalt sands (RT-AS) base isolation device. The device consists of recycled tires and the mixture of asphalt and sand at the ratio of 3:1 in weight. Since the tires consists of rubber, the elastic deformation can consume energy, and for asphalt-sands , the friction between sands and the elastic deformation of the mixture of asphalt-sands can also consume energy, RT-AS base isolation device can help the superstructure consume part of energy from seismic wave. In this way, the device can not only can protect environment through recycling worn tires, but isolate the structure from the shaking ground and decrease the damage to the superstructure. To investigate the effectiveness of a new seismic isolation device (RT-AS),two scale models of one-storied masonry structure were built up according to the ratio of 1:12. During the experiment, The WE-Z30 Precise Mini-seismic Shaking Table System was employed with the seismic wave of the earthquake in Wen Chuan in 2008 according to the record of NS direction of Shifang seismographic observatory, The experiment was conducted under three level of vibrating load using vibration exciter, and the positive effect of RT-AS device on reducing the acceleration response of the building was discussed.
Research on Building Construction with Application and Analysis of Total Float in the Activity-on-Arrow Network
Authors: Qi Qun Fu , Chen Gong , Ren Xing Yuan , Jiang Li
Published: August 2014

Building construction usually delay by various kinds of reason during construction and equipment installation process. It maybe cause total duration to be delayed by one work delaying, also it maybe not affect the total duration. It depend on nature of the work and time delayed above the two situationgs. Firstly activity-on-arrow network is introduced in the article, secondly critical path and total float are analysed, then we have controlled and analysed the construction progress by using total float in the actual projection, finally we have made the conclusion.
Integration with QFDs, TRIZ and FMEA for Control Valve Design
Authors: Hu Chang Ming , Lin Chin An , Chang Chin Hsin , Cheng Yeuan Jong , Tseng Po Yi
Published: August 2014

This paper proposes how QFDs, TRIZ integration with FMEA may arise, and making the control valve in the design concept and manufacturing development stages to amend the main issues to have front-end prevention. In order to eliminate the conflicting requirements and to build the front-end prevention of the design and production process that will meet customer needs and translate customer requirements into measurable technical requirements, the innovative model integrating three tools is proposed. One case is given to illustrate the research steps for the proposed model that will demonstrate the design quality and achievable resource benefits when these three tools provide product developers with more useful information and precise analysis results.
Research of Mechanics Based on Accident Collision
Authors: Xu Zhi Qiang
Published: August 2014

With the rapid development of the economy, the automotive industry and road transport have also been rapidly developed. Road traffic accidents occur frequently, which not only brings a lot of inconvenience to road traffic management but also threatens people's lives and property. In many road accidents, vehicle collisions are the most serious and dangerous also the largest. So having a comprehensive, systematic study of the car's collision is becoming the world's most pressing subject. The whole process of the collision of moving vehicle is inseparable from the role of the force. So in order to better analyze vehicle collisions and reproduce this process, a lot of mechanical knowledge should be required. This paper studies the vehicle accident reconstruction mechanical problems, laying the foundation of further research.
Information Processing in HFMFs Based Risk Evaluation for Virtual Enterprise
Authors: Xie Da Ye , Wu Xue Jing , Lu Fu Qiang , Huang Min
Published: August 2014

The method of HFMFs (Hypertrapezoidal Fuzzy Membership Functions) is a new mechanism for designing multidimensional fuzzy sets. HFMFs models the correlation that exists between the variables of the state space. Therefore, it is able to describe the problems of fuzzy situation more exactly. As we known, it needs a great many information to evaluate the risk level for VE using fuzzy synthetic evaluation method. However, there are lots of difficulties to get the needed information for VE. Accordingly, the HFMFs method is introduced to estimate the risk level of VE. Considering not only the relations between different fuzzy sets but also the method of HFMFs is able to describe the problems of fuzzy situation more exactly with less information. Consequently, the HFMFs method is more suitable to the virtual enterprise with little historical experiences than the fuzzy synthetic evaluation method. Simulation has shown that this method is a simple and effective risk evaluation method for VE.
Prospects of China's Aromatic Hydrocarbon Industry Based on Material Properties
Authors: Du Jing
Published: August 2014

This paper introduces market trends of China’s aromatics industry, product-oriented, diversified materials and Mainly analyzed the technological progress and environmental protection regulations, improve the level of demand, domestic technical force and its influence on the development of the industry. At the same time, this paper try to discuss the factors of industry development restriction , format the judgment of the industrial development of aromatics in China .
Kinetics on the Leaching of Total Flavonoids from Arctium lappal Root
Authors: Li Jin , Zhao Peng , Wang Mei , Wang Lu , Deng Cong
Published: August 2014

To explore the kinetics parameters in the leaching of total flavonoids from Arctium lappal root. According to Fick’s second law of diffusion, the kinetic equation for total flavonoids leaching process was established with ball model. According to Fick’s second law of diffusion, leaching process was analysed. The results can provide the valuable theory basis for the technical design and further research of polysaccharide leaching process.
Analysis of the Bearing and Deformation Characteristics for Large Diameter Pile
Authors: Zhang Dong Xiao
Published: August 2014

Base on the static load test curves of large diameter pile, the process of pile top and bottom settlement have been studied, together with deep analysis of bearing and deformation characteristics. The study shows that side friction play before end resistance, steep fall of curves caused by sediment compaction is a sign of pile side friction to the limit; pile material occurs elastic deformation in the process of loading.
Destructive Criteria for Highway Thick Filling Area Based on Stress Path Analysis
Authors: Tong Huai Feng
Published: August 2014

In the course of construction ,the free pore water in the saturation soil of highway foundation is seldom discharged immediately, and the excess pore water pressure comes into being ,which result in the delay of consolidation and time limit for a project, this problem are disposed by post-processing. Based on the variational rule of total stress, pore water pressure and effective stress in the foundation, the stabilization, the occasion and the effect of treatment are determined. So, the key of stress-path method is corresponding relation between failure state and stress-path point. The foundatin of destructive criteria based on stress-path analysis, which offer theoretical gist for the design of post-process and may be used as a reference in similar project.
Analysis for Nonlinear Aeroelasticity on Structure and its Current Progress
Authors: Li Rui , Tang Chang Hong
Published: August 2014

Firstly, the origin and mathematical mechanism of freeplay nonlinearity ,cubic nonlinearity, hysteresis nonlinearity was analyzed in this paper , and the importance of nonlinear aeroelasticity on structure was pointed out .On the current system of nonlinear aeroelasticity for the method of flutter analysis was summarized. Meanwhile on the mechanism of geometric nonlinearity and analytic methods have been studied, the future direction of the nonlinear aeroelasticity was concluded .
The Design of Passive RFID Reader System Based on MF RC500
Authors: Huang Song Lin , Cui Jian Zhong
Published: August 2014

RFID is a technology that uses radio frequency signals coupled to the space (alternating magnetic or electromagnetic), to achieve the purpose of non-contact transfer of information and automatic identification. In this paper, RFID reader system is designed based on the MF RC500. Compared with the automatic identification technology such as the barcodes, magnetic cards and IC cards, The RFID reader has many outstanding advantages: firstly, it is safe and suitable for high security terminal. The second, a plurality of electronic tags can be recognized simultaneously. The third, there is no mechanical wear. The fourth, it is convenient to use with non-contact operation and without human intervention when identifying.
The Design of Measurement System Based on Digital Temperature Sensors
Authors: Huang Song Lin , Cui Jian Zhong
Published: August 2014

Temperature measurement system is widely used in industrial monitoring, process control, intelligent home appliances and other fields. The traditional temperature detection method is to use the analog sensor, such as thermocouple or thermal resistance. This traditional temperature measurement system includes signal sampling circuit, amplifying circuit and A/D conversion circuit, which finally obtain the temperature digital signal. This kind of complex circuit leads to the weak anti-interference ability, which affects the reliability of the system. In this paper, a new design of digital temperature measurement system using digital temperature sensor AD7417 was presented. The sensor is connected to a central processing unit (CPU) via digital bus and the temperature value is displayed by LED. Practical application shows that the temperature measurement system is stable and reliable with strong anti-interference ability.
Research on Electromagnetic Environment of Transmission Line
Authors: Li Pei Lin , Lv Si Qi , Li Tian Le
Published: August 2014

With the increasing development of China's power transmission project and social awareness of environmental protection, the problem of electromagnetic environment of transmission line has been widely concerned. This paper studies the electromagnetic environment around the transmission lines, analyzes the calculation method of power frequency electromagnetic field and the measures to reduce the power frequency electromagnetic field.
Grinding Wheel Abrasive in Material Selection Using Fuzzy Grey Relation Analysis Method
Authors: Leng Jian Hua
Published: August 2014

Material selection is an important step of product design process. There are often several influence factors in the grinding wheel abrasive material selection problem. This article will put forward a fuzzy grey relation analysis method to the grinding wheel abrasive material selection problem which influences factor (evaluation attribute) values expressed with triangular fuzzy numbers. The Coefficient of variation method will be adopted to determine the evaluation attributes’ weight. Finally, an example is used to analysis the effectiveness and feasibility of the proposed method.
Applied Technology in Printed Circuit Board Inspection Base on Connected Components Matching and Analysis
Authors: Zheng Cheng Yong
Published: August 2014

Template based printed circuit board (PCB) inspection needs aligning the test image to the reference image, but most of the current image alignment methods are very time-consuming. In order to improve the efficiency of PCB inspection, we put forward an image alignment algorithm based on connected components matching, and design a procedure to detect defects and classify defects. Experimental results show that the proposed method achieves good results for real single layer, bare PCB inspection.
Application of Information Technology in Interpretation with Note Methods for Exploration-Internalization
Authors: Tian Xian Zhi
Published: August 2014

] With the development of information technology,its application has been found in many different fields. As for reform of university, especially in teachong field, it is closely connected with application of information technology,not only on effeciency-improving,but also on exploration of leaners’? inner abilities on learning. In order to dig out the learners’? inner ablities, all methods had used in the course, and information technology is also involved. The authors had used some scientific meausres to investigate the investigation results. In the investigation course, the note methods for improving interpretation had also been used. From the investigation, the authors had found out that suitable application of information technology can improve teaching effeciency and dig out innner abilities’? of learners. Therefore, reasonable measures should be taken in this course for the successful reform.[key words] information technology;note methods; exploration-internalization mode; electronic materials; interpretation training
Applied-Information Technology in Power System with Short-Term Load Forecasting Based on SPSS and BP Neural Network
Authors: Chen Jian Ping , Xia Chang Hao , Tian Zhi Peng
Published: August 2014

In the study of power load forecasting, the factors influencing power load have data redundancy and data nonlinearity. The traditional load forecasting methods can’t eliminate redundant or nonlinear law between data, which result in reduced accuracy. In order to improve the predictive accuracy of power load, a prediction model based on BP neural network and SPSS (SPSS-BP) is established. The paper first analyzes the correlation and principal component of influence factors of electric power load, which eliminates the redundancy between various factors, accelerates the speed of BP neural network forecasting and improves predictive accuracy; then model the processed data and forecast through the BP neural network model. One-month weather data and load data of Yichang city have been confirmatory tested and analyzed through application of SPSS-BP model. The results show that SPSS-BP model significantly improves the accuracy, verify the feasibility and effectiveness of the model.
Applied-Information Technology in Design of Core Particle Classification Test System Based on GPIB Interface
Authors: Song Tao , Hou Pei Guo , Yu Guo Hui
Published: August 2014

Capacitor tester Agilent GPIB interface provides only and can not be directly related to PLC data transmission problems, the paper-based automatic test system designed GPIB interface using a IPC, through the GPIB interface card with the capacitance tester data collection, in addition, the application of the digital I / O card for the data exchange between the PLC and then form an automatic test system, not only greatly improves the efficiency and accuracy of the test, the test also facilitates data management system for late data analysis system has laid a good foundation.
Using Maximum Information Selection Strategy to Computer Adaptive Test
Authors: Jing Yong Jun , Li Xin , Liu Tian Hua
Published: August 2014

As psychology, education measure theory and with the combination of computer technology of continuous research and development, based on Computer Adaptive Test (CAT) become a new type of test form. Based on the analysis and state the topic of CAT theory and Maximum Information Selection Strategy (MISS), the method of maximum information selection strategy in the key issues in an adaptive testing system solutions is discussed. The effectiveness of the solution method which this topic given is proved by experiment.
Information Processing with Combination Method for Dependent Evidences Based on Principal Component Analysis
Authors: Yao Jie , Hu Tao , Yang Jian Jun
Published: August 2014

To meet the requirement that evidences must be independent for evidences combination in D-S evidence theory when the information processing, the dependence among evidences should be eliminated, so a new combination method of dependent evidences based on the Principal Component Analysis (PCA) is presented. The high-dimensional dependent evidences are replaced by the new low-dimensional independent evidences to reduce the dimensions following the guiding rule of PCA, and then the probability under the new evidences is calculated. The new independent evidences are combined with the combination rules of D-S evidence theory. Compared to existed methods, the dependence in initial evidences is eliminated, and the number of evidences is reduced, which leads to the simplification of the process of evidence combination. Finally, an example is employed to verify the feasibility and effectiveness of the proposed approach.
Topology Analysis for the Damaged Road Network Based MapX
Authors: Yin Xu Ri
Published: August 2014

Natural disasters often cause damages in different degrees to the road network, the topology analysis for the damaged road network has become more valuable and meaningful. In this paper, several key technologies to establish topological structures of the damaged road network based on MapX are discussed. On the base, an algorithm for finding the shortest path in the damaged road network is presented. At last, a brief conclusion as well as the expectation for the further study is made. This algorithm has been well applied in the Decision-making Analysis System for Highway Transportation, and the probation shows that it is faster and more flexible in the practical application.
Applied-Information Technology in Design of Diabetic Rehabilitation Management System Based on the Technology of Mobile Internet
Authors: Wang Hong Li , Peng Xu Fu
Published: August 2014

Today, since diabetes has become one of the killers that threat human health, the full use of advanced mobile Internet technology to achieve the real-time information exchanged between medical institutions, doctors and patients, improve the efficiency of rehabilitation is a priority task for the research workers. In view of this, the project focuses on analyzing the functional requirement of each link in the whole process which includes medical institutions, doctors, diabetes disease prevention, treatment, rehabilitation and management and so on. Based on the mobile Internet, we do some systematic design for diabetes rehabilitation, treatment and management and carry on the detailed design and program implementation code for mobile client reception, Web site, data acquisition and transmission, user rights management, and background database. The system can realize the functions of disease data collection, transmission, analysis, feedback, user privilege management, rights query and management, and some other features. This topic provides different platforms and services for different users and business requirements.
Applied Technology in Data Evaluation and Position Quality of ADS-B System
Authors: Wang Jian Hui
Published: August 2014

Automatic dependent surveillance-broadcast (ADS-B) is a totally new surveillance method, so before practically applied and operated in China, abundant tests and evaluations are necessary to validate the performance of ADS-B and guarantee the operational security. To solve the asynchronous problem among radar data, ADS-B data and real-time kinematic (RTK) data caused by different update rates, this paper proposes the technique of synchronizing multi-surveillance data by extrapolating from the data of low update rate to high update rate according to velocity and heading. Meanwhile, because radar data, ADS-B data and RTK data are expressed in different coordinates and cannot be compared each other, this article provides a method to unifying the coordinates of multi-surveillance data. By the analysis and evaluation, we can conclude that the performance of ADS-B is better than radar. Addtionally, the paper makes focus study on the position quality indicator and the encoding rules, and puts forward the conversion between the different rules. The paper provides the technical guide for the manufacturers and the airlines.
Research on Information Technology in Effective Class Activities with Effective Class Measures
Authors: Xie Chun Lin
Published: August 2014

Under the circumstance of internet, it is undoubted a new way to train learners with applied technology benefits the development of learners’ linguistic learning in future. Therefore, both instructors and learners have necessity to master and share some skills and strategies language learning by means of applied technology. It is also essential that learners enhance their abilities to manage their time and instructors develop their abilities to control class with interesting activities. This research aims at studying the effectiveness of applied technology in effective class activities with effective class measures.
Design and Implementation of an Encryption/Decryption System Based on FPGA
Authors: Ma Xiao Cong , Cai Guang Hui , Sun Hong Chao , Li Hong Ye
Published: August 2014

This paper designs an encryption and decryption system based on the FPGA. The system uses AES algorithm to encrypt and decrypt data. A pipeline IP core is designed with the reconfigurable technology complying with the Avalon bus interface specification. The IP core is applied to be a custom component on Nios II architecture so that the encryption and decryption processes through hardware can be controlled by software. Finally, the program is downloaded to the Altera DE2 development board and completes the testing of encryption and decryption processes. The system can be widely implemented in the field of data security.
Numerical Investigation on Unsteady Flow Field of the Forward-Facing Cavity and Opposing Jet Combine Thermal Protection System
Authors: Lu Hai Bo
Published: August 2014

In this paper, the unsteady flow field formed by the hemisphere nose-tip with forward-facing cavity and opposing jet combined thermal protection system (TPS) under high speed free stream flow (Ma4.98) was investigated numerically. The periodic variation of the drag coefficient and the flow field of the nose-tip were obtained. The numerical results show that a suitable cooperation between the opposing jet stream condition and the physical dimension of the cavity is necessary.
The Mechanical Properties of Inorganic/Organic Co-Crosslinked PDMAEMA Hydrogels
Authors: Chen Yi , Liu Wen Yong , Zeng Guang Sheng , Yang Jun Hong
Published: August 2014

The nanosized Ov-POSS particles were added into the PDMAEMA hydrogels crosslinked by BIS in situ radical polymerization as a co-crosslinker. Both cross-linker makes a non-ignorable effect on the mechanical properties. With the increase of Ov-POSS, the mechincal properties were improved obviously comparing to the gels only crosslinked by BIS. The increased BIS is also conducive to the enhancement of tensile and compression strength of gels.
A CNC Equipment Distributed Monitoring System Based on Cloud Computing Technology
Authors: Zhang Rang Yong , Ma Geng , Cheng Guang He
Published: August 2014

CNC equipment distributed monitoring system based on cloud computing technology provides a sable and reliable remote real time monitoring system to monitoring a mount of CNC equipment distributed in a large wide area by wireless network and GPRS communication technology which can be used to remote diagnostics and improve service respond speed.
Predictive Method of Networked Control of Industrial Automation Systems
Authors: Lu Hong Mei , Zeng Li Xin
Published: August 2014

A New method for real-time prediction of uncertain network transmission time delay and the closed-loop control method through the network manufacturing and industrial plant are introduced. Put forward delay prediction method is based on the multilayer perceptron neural model. To reduce the amount of the first layer of neurons network, thus reducing the computational burden a real-time implementation, a method for the determination of Markov delay sequence order. Used to predict delay and a zero order equivalent discrete time model of the plant, a kind of time-varying state feedback control algorithm is put forward a strategy to obtain real-time update. The stability of the closed-loop switch sufficient conditions is derived using the theorem of linear system. It shows that the method studies of industrial network by two cases, i.e., a DC motor driven transport roll paper and a milling machine. Simulation study describes the effectiveness of the method to control these challenging problems.
The Mould Flux Viscosity Designing of High Carbon Steel for Thin Slab Continuous Casting
Authors: Li Hui Rong , Sun Li Gen , Ai Li Qun
Published: August 2014

Viscosity is very important for the high carbon steel for thin slab continuous casting, in this research the orthogonal experiment has been carried out, and the results showed that: the effect for the flux viscosity form strong to weak is: R>F>BaO>Na2O>MgO. and in the experiment range, with the R increasing, when the R is between 0.80 and 0.90, the flux viscosity is diminished slowly; but when the R is bigger than 0.90, the flux viscosity is diminished sharply; Na2O,MgO and F- could decrease the flux viscosity; BaO could lower the melting temperature of the flux to decrease the flux viscosity.
Effects of Impurities on Silicon Dioxide Dielectric Properties
Authors: He Tao
Published: August 2014

SiO2 is a good performance of high temperature wave-transparent materials, but the impact of the material properties of the components of the wave through it there are some drawbacks. This study intended to determine the theoretical dielectric properties of this material. Based on Debye theory, describes the dielectric properties of the composite material at high temperature multi-scale model, discuss the impact of factors on the micro and mesoscopic dielectric properties.
Applied Technology in Using HPLC for Determining Aflatoxin Contents in Peanuts
Authors: Shi Yong Gang , Zhong Wei , Wen Hao , Ma Ju , Sun Ping
Published: August 2014

Aflatoxins in grinded peanuts were extracted with 70% methanol and purified with immuno affinity column. In order to enhance the test sensitivity, the Aflatoxin was derived by trifluoroacetic acid. the derived Aflatoxin B1, B2, G1 and G2 were analyzed by HPLC with fluorescence detector. The determination could be completed in 14 minutes. The detect limits of Aflatoxin B1, B2, G1 and G2 were 0.04μg/kg, 0.01μg/kg, 0.20μg/kg and 0.02μg/kg respectively, the recoveries were from 81.0% to 115.0%, the relative standard deviations were less than 8.2%.
Error Analysis of a Non-Contact Parallel Plane Sensor Based on Monte Carlo Method
Authors: Ha Le , Fang Li Jin
Published: August 2014

In the project of testing platform, characteristics of the measured object are framework. In view of the difficulties of non-contact high-precision measurement of the planar motion objects, an innovative measuring method is proposed which is based on the combined using of high-precision laser distance sensors. This paper presents the structure of the new sensor and its measuring principle, and established a mathematical model of the measurement object and its error model by using differential method. We use the Monte Carlo method to random sample the random sampling of random variables of the error model; finally combining with the instance; we use the Monte Carlo method to get frequency distribution histogram of the measurement error. Through analysis and calculation of this paper, we prepare for theory for the practical application of this new type of sensor.
Research on Internal Control Evaluation for Coal Mine Production Logistics Based on Management Entropy
Authors: Feng Yi Cheng
Published: August 2014

As the low safety production level and efficiency greatly restrict the efficient functioning of coal mine production logistics in our country, it is urgently necessary to combine with the complex feature of coal mine production logistics to evaluate its internal control. First, on the basis of management entropy and management dissipative theory, this paper expounds the evolution rules of coal mine production logistics internal control. Second, establish a set of index system reflecting the internal control system of coal mine production logistics and build the evaluation model of coal mine production logistics internal control based on management entropy. At last, verify the applicability of the model through empirical research, and provide a theoretical basis for the comprehensive analysis of the whole operation status and internal control problems in coal mine production logistics system.
Adaptability of Circle Equation Based Static Contact Angle Algorithms for Measuring Hydrophobicity of the Material Surface
Authors: Xu Zhi Niu , Ma Yan Peng , Xiong Hai Jun , Liu Jing Gang
Published: August 2014

For more accurate evaluation of the static contact angle, the height-width method and circle fitting algorithm are investigated, the comparison of some factors on the two algorithms are analyzed, including difficulties of programming, computational complexity, influence of dimensionless drop volume, contact angle and edge noise on accuracy. The critical dimensionless drop volumes corresponding to a contact angle error of 3° are given. The results indicate that: the programming of height-width method is more difficult than that of the circle fitting algorithm, the computational complexity of the height-width method is less than that of the circle fitting algorithm. The errors of the two algorithms increase with the drop volume and contact angle, the height-width method is more accurate than that of the circle fitting algorithm, the errors acceleration decrease/increase with the drop volume/contact angle. The critical dimensionless drop volumes of the two algorithms decrease as the contact angle increases, and them will tend to saturation. The noise-resistant capacity of the circle fitting algorithm is better that the height-width method. Therefore, the circle fitting algorithm should be selected in the condition of high noise level. Otherwise the height-width method should be selected.
The Energy-Saving Retrofit of Axial Fan Based on Performances Test in a 300MW Unit
Authors: Lan Xiao Cun , Xu Ming Feng , Cheng Jin Wu , Wang Chun Yu , Qin Qi
Published: August 2014

In a power plant of 300MW, the power consumption of its axial Induced Draft Fan (IDF) and Flue Gas Desulfurization (FGD) booster fan was high on the whole. So it is necessary to take measures to reduce the power consumption by energy-saving retrofit. Firstly, a series of test and optimization are carried out on its operational performances. Furthermore, several retrofit schemes are worked out. Then, based on a series of test about its operational characters, an evaluation on potential to save energy is carried out for the IDF and the FGD booster fan. Finally, according to the comprehensive analysis including technical economic, difficulty and reliability, it is of the best scheme to carry out the frequency conversion retrofit for IDF. In fact, its effect is good after the retrofit is conducted, namely, the energy-saving index is almost the same as from evaluation. Obviously, the evaluation as for performance test is quite accurate and can avoid several problems likely to occur in frequency conversion retrofit.
An Effective Spectrum Sensing Method Based on Correlation Coefficient and Energy Detection
Authors: Liu Fu Lai , Guo Shou Ming , Du Rui Yan
Published: August 2014

Spectrum sensing is the key functionality for dynamic spectrum access in cognitive radio networks. Energy detection is one of the most popular spectrum sensing methods due to its low complexity and easy implementation. However, performance of the energy detector is susceptible to uncertainty in noise power. To overcome this problem, this paper proposes an effective spectrum sensing method based on correlation coefficient. The proposed method utilizes a single receiving antenna with a delay device to acquire the original received signal and the delayed signal. Then the correlation coefficient of the two signals is computed and the result is used as the test statistic. Theoretical analysis shows that the decision threshold is unrelated to noise power, thus the proposed approach can effectively overcome the influence of noise power uncertainty. Simulation results testify the effectiveness of the proposed method even in low signal-to-noise (SNR) conditions.
Information Technology for Construction of Online Teachers Learning Community
Authors: Wang Kun , Yang Yi
Published: August 2014

Professional development of college English teachers is vital to current education reform in China. The paper aims to explore the development from the perspective of online learning community. To begin with, statistics of research journals about learning community of recent three years was made. The dynamic development of learning community was also analyzed briefly. Then, it designed the structure of online teachers learning community. Finally, it comes to the conclusion that the construction of online learning community can be achieved from four aspects. The system network platform plays an important role in the process of online learning community. Creating learning environment, enriching learning resources and developing proper norms all contribute to the implementation of online teachers learning community.
Modern Information Technology on Higher Education Reform and the Countermeasures Analysis
Authors: Zhou Ling
Published: August 2014

The development of modern information technology to accelerate the rapid development of high technology, the rapid development of high technology and promote the differentiation and integration of university disciplines. By describing the main contents of modern information technology, and analyzes the impact of modern information technology on Teaching Reform of higher education and university teachers from the use of multimedia technology to improve the level and increase the ability of teachers to use modern distance education university and college teachers to improve the teaching of measures to address three aspects of information literacy universities.
The Application of Recycled Aggregate Concrete in Road Engineering
Authors: Guo Wan Lin
Published: August 2014

Through the introduction of the application situation and basic properties of recycled concrete,the author analyzes its application value and and research direction in engineering application,and then puts forward to the application prospect of recycled concrete in road engineering.
Research on Application of Software and Information Technology for Implementation of Test Management System in Bank
Authors: Liu Ru , Wu Jun Hui , Zhou Quan , Chen Jie , Si Hui Ping , Lin Kai Yan
Published: August 2014

The banking information construction in China has made great progress with the rapid development of science and technology. The various systems is on-line continuously for the expansion of banking. While the in-depth development of banking systems is in various types and the scale and complexity of software projects is increasing, the quality of software testing become a constraint to improve the quality of each system bottleneck gradually. As an important aspect of a quality assurance software testing, the test management system is being pay attention gradually. The application software on banking for test management system is first described in this article, and than the research and implementation of test management system is described in detail.
Effect of EPS on Flocculation and Settlement of Activated Sludge in MBR
Authors: You Kun , Wang Di , Liu Jun , Yuan Ya Shu
Published: August 2014

The purpose is to determine the main influencing factors of flocculation and settlement of activated Sludge in MBR. By establishment of regression equation the main influence factor of flocculation and Settlement is ensured. The result shows that EPS has significant effect. The more the content of EPS, the poorer sludge characters. The polysaccharide makes important function during the process. It is hydrophilic substances. As polysaccharide is more, flocculation body will hold more water. At the same time, the separation of flocculation body and water is more difficult.