Table of Content

15 October 2011 Volume 24 Issue 10

  

Articles

A New Design of High-linearity Sample Switch

HU Wei, HE Ming-Hua

. 2011, 24(10):  1. 

Abstract ( 996 )   PDF (715KB) ( 872 )  

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This paper introduces a new sampling switch used in pipeline ADC.The switch has high-linearity property by using comparator,inverters chains,CMOS switching,and capacitance.In order to improve the Spurious Free Dynamic Range (SFDR),the basic principle is to ensure MOSFET gate voltage to follow the input voltage,thus the voltage across them being a constant value.Finally Flip-around sample-and-hold circuit is used to verify the new switch.Test results show that this new architecture has 91 dB SFDR,which meets the design requirements.

Design of Supervising and Measuring System of Serial Lithium-ion Batteries Based on MCU

SUN Jun, WANG Jing-Mei, LI Li, GONG Wei-Jia

. 2011, 24(10):  4. 

Abstract ( 1120 )   PDF (614KB) ( 796 )  

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A supervising and measuring system of serial lithium-ion batteries which base on MCS51 series microcontrollers is introduced.The system measures the voltage of serial lithium-ion batteries by using differential amplifier and analog multiplexers.A one-wire bus measuring system with MCS51 and DS18B20 has been developed for the system of serial lithium-ion batteries.The system is simple and cheap.Tests show that the system is capable of reliable and accurate supervision and measurement of serial lithium-ion batteries.

Design of a Single-Axis MEMS Gyroscope Signal Process Circuit

XIONG Fei, YANG Rong-Bin

. 2011, 24(10):  7. 

Abstract ( 1300 )   PDF (805KB) ( 797 )  

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A single-axis MEMS gyroscope signal process circuit is designed based on a MEMS sensor.Stability of the closed-loop drive circuit is analyzed in time domain.A switched-capacitor CV-converter which is not sensitive to common section of the sensor capacitor is proposed.Results indicate that the linearity is smaller than ±0.5%,power consumption smaller than 150 mW and resolution of ADC greater than 11 bits.

Study on Random Frequency-shift Jamming to SAR and Jamming Effect Evaluation

LUO Qiang, ZHU Shou-Bao, TONG Chuang-Ming

. 2011, 24(10):  11. 

Abstract ( 1326 )   PDF (778KB) ( 827 )  

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Fixed frequency-shift jamming only can produce a fake target,and wiping off the coherent between the jamming signals results in a jamming line.With this limitation in consideration,the paper discusses the random frequency shift jamming.The jamming principle is introduced first,followed by an analysis of the jamming effect,and finally by combining the jamming effect evaluation,the simulation substantiates the advantage and validity.

Analysis of Transverse Magnetic Fields in Asymmetric PPM Focusing System for Coupled-Cavity TWTs

CONG Pei-Liang, DENG Guang-Sheng, YANG Jun, LV Guo-Qiang, RUAN Jiu-Fu

. 2011, 24(10):  14. 

Abstract ( 1201 )   PDF (848KB) ( 823 )  

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The internal magnetic fields of two asymmetric PPM focusing systems are simulated with 3D magnetic fields software in this paper.One of them,the coupling slot is arranged with 180,and another arranged in a line.Based on the results,we analyses the transverse magnetic fields of asymmetric PPM focusing systems and the reasons of the transverse magnetic fields in the two structures.The improved efficiency and magnetic saturation to asymmetric PPM focusing systems by adjusting the iron loading head are summarized.Finally,three different reasons of the transverse magnetic fields and the improved methods reducing the transverse magnetic fields of the two structures are presented.

Improved Microstrip Low-pass Filter Based on DGS

WANG Zhi-Guang, HAN Liang, LV Fei

. 2011, 24(10):  17. 

Abstract ( 1456 )   PDF (492KB) ( 806 )  

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In this paper the author designs a conventional microstrip low-pass filter with a 3 dB cutoff frequency of 3 GHz and a passband insert-loss less than 0.5 dB.The filter is improved by defected ground structure.The proposed filter has the same parameter but has smaller size.

Research on Drain Voltage of Class F Power Amplifier

ZHANG Hong, CAI Fei, XIE Bing-Yi, LV Guo-Qiang

. 2011, 24(10):  19. 

Abstract ( 1722 )   PDF (553KB) ( 988 )  

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Class-F power amplifiers employ harmonic frequency resonators to shape their drain voltage or drain current waveforms to achieve high efficiency.Based on this,drain voltage waveforms with different harmonic ratios is theoretical studied first.And then the theory is verified through an electromagnetic software simulation.If only the third harmonic is considered,the conclusions are drawn as follows:for the third harmonic and fundamental wave voltage ratio K=0.111,the drain voltage waveform is the most flat;and when K is close to 0.4,the drain voltage tends to a square wave.Finally,a class-F power amplifier with appropriate harmonic ratio is designed,with a peak power-added efficiency of 88.074%.

The Auto-control System of Classroom Lights

QIN Hai-Yi

. 2011, 24(10):  22. 

Abstract ( 1173 )   PDF (361KB) ( 794 )  

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This system to AT89C52 single chip computer as control device of intelligent parts,adopts heat release infrared sensor detects the release of human existence and adopts photoconductive resistance constitutes circuit testing environment light intensity.According to the classroom light conditions and  the measured the signal of human body system and ambient light,the system can make reasonable and intelligent judgment and then controls the work of classroom lighting circuit.It is a effective way to avoid the classroom of waste electricity.

Design of Audio Player for USB Flash Disk Based on STC12C5A60S2

YANG Jian, JI Lu-Bin

. 2011, 24(10):  24. 

Abstract ( 1067 )   PDF (562KB) ( 744 )  

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An audio-player for USB flash disk based on STC12C5A60S2 is designed.This paper introduces the design ideas and the principle block diagram,presents the hardware circuits of the three modules of the player,and then provides the software program flow.The result shows that the player achieves desired functionality and has a high cost performance.

Design and Study of Compact Dual Band-Notched Ultra-wideband Antenna

ZHANG Xu-Hui

. 2011, 24(10):  28. 

Abstract ( 1541 )   PDF (639KB) ( 784 )  

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A novel miniature antenna design for ultra-wideband (UWB) applications is presented.The proposed compact antenna is achieved by exploiting a novel ground plane consisting of a small rectangle and two semiellipses.By cutting two U-shaped slots on the feed line and patch,two notched bands of 540 MHz and 610 are achieved.The configuration of the proposed antenna can provide an ultra wide voltage standing wave ratio (VSWR)<2 bandwidth with satisfactory radiation properties.A good agreement is achieved between simulated and measured antenna characteristics.

Solutions to Silence Zone in HF Communication Based on Frequency Selection and High Elevation Angle Antenna

XIE Ting-Ting, XU Jun, JIANG Yun-Yang, JIA Ning-Ning

. 2011, 24(10):  31. 

Abstract ( 1351 )   PDF (510KB) ( 934 )  

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In view of the problem of silence zone in HF communication in work,this paper analyzes the causes of the silence zone and provides two solutions.A detailed description is made of the feasibility of the two ways.The methods based on low frequency selection and high elevation angle antenna are given in engineering application.In certain type of simulation system,the silence zone problem in HF communication is effectively solved.

An HSGPS Receiver Design and Verification

HUANG Wen-Jie, ZHANG Hao, LIU Hai-Bin, CUI Xue-Rong, ZHANG Yun-Chao

. 2011, 24(10):  34. 

Abstract ( 1952 )   PDF (924KB) ( 803 )  

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This article analyzes first the characteristics of severely degraded GPS signal,and discusses the main technical factors that affect GPS positioning when only NLOS signal exists.Then,the paper introduces the design and verification of HSGPS receiver bases on LEA-5S from u-blox for vehicle positioning under severely degraded GPS environment.And finally,it proves the feasibility of the novel HSGPS receiver design and the application of positioning vehicle under ultra weak GPS signal environment as well by means of testing the start-up TTFF and positioning accuracy.

Realization of Out-band Transmission of DTMF on SIP Extension

CHI Xiao-Gang, LUO Wei-Bing, BA Gang

. 2011, 24(10):  39. 

Abstract ( 1052 )   PDF (463KB) ( 761 )  

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As a dial tone signal,DTMF signal can be achieved not only in dial-up business,but it can be achieved for more value-added services through the extensions of SIP.In this paper,the extensions of SIP INFO methods and event notification mechanisms are described,and the two methods for transmitting DTMF signal are analyzed and compared.The out-band transmission of DTMF is realized.

Measuring Instrument of Atmospheric Environment Factors Based on Ultrasonic Velocimetry

HU Yan-Jun-Xi, SHENG Wang, WANG Wen-Jie, ZHANG Yan, GUO Jian-Zhong

. 2011, 24(10):  42. 

Abstract ( 2109 )   PDF (822KB) ( 891 )  

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By many factors,traditional mechanical anemometer have been unable to meet the target currently.The use of ultrasound to measure wind speed can effectively improve the measurement accuracy,reduce errors and power consumption.The system uses MSP430 as its processing core,and takes advantage of ultrasonic properties and ultrasonic sensors to achieve the measurement of wind velocity,and realize interactive communication using the technology of ZigBee.Analysis shows that the system proposed in the article is accurate in measurement,with better accuracy at higher wind speed.

Control of Gasoline Engine Electronic Fuel Injection System Based on MCS-51 Single chip Microcomputer

WU Fei, DU Jun, LU Qian-Yu

. 2011, 24(10):  48. 

Abstract ( 1237 )   PDF (737KB) ( 781 )  

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This paper gives an introduction to the electronic fuel injection control system,discusses the working circuit and control theory of electronic control unit (ECU),sensors and actuators,and analyzes fuel injection quantity control strategy and fuel injection timing control method under different conditions of gasoline engine.The paper also designs the electronic fuel injection control system,including the account of rotate speed of engine,the control of injecting fuel signal and the control of injection volume.

Design of High-Temperature Thermometer Based on Pt100 Using Look-up Table

LI Tian-Hui, WEI Shan, YU Qian, LIN Zan-Yang, HONG Xin-Gen, LU Chao

. 2011, 24(10):  52. 

Abstract ( 1238 )   PDF (584KB) ( 1198 )  

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In view of the disadvantage of high temperature thermometer such as large size,high cost,complex operation,and dependence on computer in actual measurement,this paper studies the temperature data collection,transmission and display,designs a high temperature thermometer with STC89C52 as its core and with platinum resistor based on Pt100 temperature sensor and liquid crystal display 1602.The thermometer has a measurement range of -200 ℃~+500 ℃ with an accuracy of 1 ℃.Experiment results show that the high temperature thermometer has great temperature measuring range,stable performance,reliable operation,expansion ability and independence from computers.

Simulation of Fuzzy PID Brushless DC Motor Double-loop Speed Control System

LU Hua-Ying, CHENG Guang-Wei, CHEN Kai

. 2011, 24(10):  56. 

Abstract ( 1568 )   PDF (482KB) ( 804 )  

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In view of the precise speed control of brushless DC motors,the article discusses the advantages of the combination of classic PID and modern fuzzy control,and simulates the motor speed controller by fuzzy PID control method.The result of online simulation shows that the fuzzy PID controller is better than the classic PID controller in response properties and anti-jamming performance.

Design of Resistor Forming Machine Based on 8051 Microcontroller

XIONG You, BAI Guo-Zhen, ZHOU Quan, CAO Peng-Kun

. 2011, 24(10):  59. 

Abstract ( 1164 )   PDF (491KB) ( 899 )  

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In this paper,a design of resistor forming machine based on photoelectric sensor,stepper motor and 8051 microcontroller is presented,besides that,this paper also introduced the composition of its structure,and briefly introduced the process of the work.The machine functions stable with accurate detection data.

Cushion Controlled By Single-Chip

LIN Jian-Chun

. 2011, 24(10):  61. 

Abstract ( 818 )   PDF (343KB) ( 1071 )  

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This paper introduces the cushion controlled by Peltier to cool or heat by ATmega8 Single-Chip.The cushion has built-in water pipes,with water pipes connected with the external tank.According to the principle of Peltier,water in the tank is cooled or heated,and water circulation is realized by the micro-pump,keeping temperature of the cushion the same with the water temperature.

An Average Method for Improving the Stability of Marching-on-In-Time

LIU Yang, LU Gang, YANG Song, FAN Bai-Cun, ZHANG Min

. 2011, 24(10):  63. 

Abstract ( 939 )   PDF (592KB) ( 731 )  

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This paper introduces the principles of the time-domain integral equation method (TDIE),and improves a new average calculation method of marching-on-in-time (MOT) preventing late-time oscillations.This improved method can increase the stability of the MOT in TDIE.The electric current respond of the target surfaces when Gauss pulse wave illuminates metallic cubic is calculated.The results show that the method in this paper simply and effectively relays the late-time oscillations of TDIE.

An Improved Design of MBIST Based on March C+

SHEN Zhi-Fei, MEI Chun-Lei, YI Mao-Xiang, YAN Tao, YANG Yu-Cai

. 2011, 24(10):  67. 

Abstract ( 1628 )   PDF (631KB) ( 796 )  

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Several common algorithms for BIST of SRAM are introduced,especially the algorithm based on March C+.An improvement is proposed to enhance the fault coverage of MBIST.The most popular design method,top-down design,and the most commonly used IC design language,Verilog HDL,are adopted to design the MBIST circuit.Force-release sentence supported by Verilog HDL is used to conduct simulation verification.

Design and Implementation of Real-time IP Fax Technology Based on T.38 Gateway

SHEN Gui-Ning

. 2011, 24(10):  71. 

Abstract ( 919 )   PDF (618KB) ( 716 )  

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FOIP technology and standards are discussed,and the realization manner of real-time IP fax solution is presented in this paper.Due to the inherent characteristics of IP networks,IP Fax must overcome such technical problems as delay variation,jitter,packet loss and error correction.T.38 fax gateway must pass.T.38 Fax Gateway demodulates received faxes from the fax machine into the T.30 control message signal demodulation and fax image data,information and data on these re-packaged into IFP packets,through the IP network to the T.38 IFP packets receiving gateway,and the gateway to the T.30 control messages received and graphic data re-modulation,which is then sent to the receiving fax machine.Good performance is achieved which is comparable to that of the PSTN network fax.

A Fast Synthesis Algorithm for Reversible Logic Circuit Based on PPRM Expression

GAO Lei, CHEN Ze-Wang

. 2011, 24(10):  75. 

Abstract ( 1249 )   PDF (449KB) ( 780 )  

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Through the research of the transformation method based on PPRM expression,based on the synthesis time,a synthesis method based on the original algorithm abandon using large-scale reversible logic gates is presented.Experiments for some benchmark functions using new synthesis algorithm are made.The result shows that the new algorithm greatly improves the speed of synthesis and saves resources.

The Discrimination of Gray Code

LI Zheng-Sheng, MA Wen-Yan, YAN Jie

. 2011, 24(10):  77. 

Abstract ( 1518 )   PDF (612KB) ( 834 )  

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This paper discusses the origin of Gray code,analyzes some irrational expressions for Gray Code,and makes it clear that the authentic inventor should be Frank Gray,and that the right English name should be Gray Code and the standard Chinese name is “格雷码”.

ASIC Design of Error Correcting Algorithm for HDMI Sink

YANG Yu-Cai, JIANG Te-Lin, SHEN Zhi-Fei

. 2011, 24(10):  81. 

Abstract ( 1165 )   PDF (841KB) ( 746 )  

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This paper presents an error correcting algorithm based on HDMI coding character,which can fix many errors when the data transmit through the HDMI channel.This new algorithm uses failure analysis to evaluate the error possibilities of each possible error;analyses the error characteristic and sort the most similar source,and then corrects it.It can also be combined with BCH code in the HDMI system to improve the reliability of HDMI transmission.However,the algorithm has some limitations:there are different re-pair rates in different stages of HDMI data transmission.An ASIC design of the algorithm is given in this article using Verilog HDL language for RTL level design,and its feasibility is proved by function simulation,verification and synthesis.

An Effective Updating Algorithm for Mining Association Rules

ZHU Hong-Ping, GONG Qing-Ge

. 2011, 24(10):  85. 

Abstract ( 1052 )   PDF (526KB) ( 756 )  

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Both incremental and negative incremental field are discussed aiming at the problem of mining association rules effectively.It is suggested that the problem of change of minimum support can be transformed to the problem of updating database.The crossing lists are used to storage all frequent items and their supports in both the original and the changed database.After analyzing the relation between s₁,s₂ and s₀,whether an item is frequent or not can be figured out.By this method,the I＼O time is largely reduced,and the efficiency of mining association rules has been improved.Finally,the emulation experiment verifies its effectiveness.

A New Hybrid Frame ALOHA and Binary Splitting Algorithm for Anti-collision in RFID Systems

JIANG Zhong-Yun, QIAN Chen, YUAN Yu-Yong, HE Cheng-Jun

. 2011, 24(10):  88. 

Abstract ( 1498 )   PDF (743KB) ( 797 )  

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Collision is considered as one of the most important issues in RFID system designing.There are many algorithms available aiming at decreasing collision state numbers or processing such states that help achieve an accurate identification process in an acceptable period of time.In this paper,we propose an algorithm offering balanced performance in general and excellent performance in environments with low or medium tags population.It is capable of reducing the number of collisions,in the first stage,and identifying tags that failed to be identified due to the occurred collisions,in the next stage.For illustration,we present simulation showing the superiority of our algorithm in performance to some commonly used algorithms.

Research on Block Elements of Node Configuration In Wireless Sensor Networks

CHEN Fei, ZOU Tao

. 2011, 24(10):  93. 

Abstract ( 1592 )   PDF (496KB) ( 755 )  

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The node number preconfigured is the primary concern in designing wireless sensor network because it is a determined factor for lifetime of wireless sensor network (WSN),detection probability and network cost.It is assumed in the article to achieve seamless connectivity node configuration issues in a given area,two types of blocking factors that appear in the node configuration are analyzed and calculated,mainly from the mathematical point of view the actual situation on the analysis.The obtained results have universal application.

Research on CAM Curve Based on Siemens SIMOTION D425 Motion Control System

ZHOU Quan, BAI Guo-Zhen, XIONG You, CAO Peng-Kun

. 2011, 24(10):  96. 

Abstract ( 1676 )   PDF (499KB) ( 845 )  

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This paper introduces the application of CAM curve on automatic system of SIMOTION D425.For the servo motor to run any given curve,the method of CAM curve is adopted,by which the response movement of slave axis followed master axis is simulated by Scout Software and the corresponding response curve is obtained.Thus the relationship between the configurated curve and simulated one can be clearly seen.It is proved that the CAM curve function can not only achieve this goal with ease,but also can make the relationship between the master axis and slave more flexible.

A Design of Air-Conditioner Energy Saving Control System

MEI Chun-Lei, DU Kan-Kan, SHEN Zhi-Fei, DENG Tian

. 2011, 24(10):  99. 

Abstract ( 1373 )   PDF (518KB) ( 790 )  

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This paper presents a control system for air-conditioner.The system can control the air conditioning intelligently based on the temperature configuration of user.It also utilizes the outdoor cold source to reduce the temperature of the engine room,thus reducing the power consumption effectively.At the same time,the system realizes the remote monitoring for room temperature,and ensures the equipment can work safely and effectively.Through analysis we can see that the system can effectively reduce energy consumption,and save cost for the enterprise.

Design and Implementation of Substitute Charging System of Netcom Call Basing on ACE Framework

LI Qiang-Fa

. 2011, 24(10):  102. 

Abstract ( 1375 )   PDF (330KB) ( 700 )  

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In this paper,according to the present status of Netcom telephone backing system and the provincial demand of centralized control and basing on the middleware ACE adaptive communication environment of the advanced network,we design and implement a system for Netcom in order to substitute call charging.

Database System Constructs Based on PowerDesigner

CAO Feng-Hua

. 2011, 24(10):  104. 

Abstract ( 1035 )   PDF (692KB) ( 872 )  

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PowerDesigner is a system modeling tools to run on the Windows platform,enabling software developers and database administrators to work together,quickly build software system model for the development of a stable and reliable software and lay a solid foundation.This article describes the analysis and design process of PowerDesigner and software code,database generation process using an instance of the construction process.

Applications of Software Component in ERP System

LI Xiu-Juan

. 2011, 24(10):  106. 

Abstract ( 1233 )   PDF (359KB) ( 770 )  

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As a technology for software reuse,component technology has good encapsulation and portability and adaptability.This paper first introduces briefly the component-based software development technology,and then analyses the common structural of ERP system,and major general function in ERP system research component technology application in the architecture.Lastly,the ERP system application server architecture model is given.

QR Code Recognition System Based on Android Embedded Platform

LU Lei

. 2011, 24(10):  108. 

Abstract ( 1495 )   PDF (654KB) ( 893 )  

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The paper introduces the basic structure of QR code;analyzes QR code image data processing based on the Android embedded platform,such as binarization,location,and rectification;and then realizes decoding of QR code.According to the test,the system can recognize the QR code which is inclination and blur quickly.

Key Techniques for Content-based Video Analysis

ZHANG Liang, ZHOU Chang-Sheng

. 2011, 24(10):  111. 

Abstract ( 1151 )   PDF (656KB) ( 765 )  

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This paper analyzes the differences between video data and text data,and problems in the video retrieval of video data.Semantic video database,video and video analysis of relevant low-level features,video object classification and recognition,video content description and video retrieval interface methods are analyzed and compared.Finally,a framework for video semantic analysis and analysis process is proposed.

Data Collecting System Based on MSP430 and C Sharp

LIANG Jia, ZHANG Shuai

. 2011, 24(10):  115. 

Abstract ( 1719 )   PDF (659KB) ( 821 )  

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In order to achieve real-time data acquisition and process,this paper designs a real-time data acquisition system based on MSP430F149 single-chip and CP2102 Bridge chip,which is capable of four-channel data acquisition and controlling.The computer software is developed using C Sharp software,which can realize the functions of data acquisition,storage,analysis,and report forms printing.The system has many advantages such as low power consumption,small volume,portability and so on,and it has achieved good application effect in engineering practice.

Improved Algorithm for Face Feature Orientation Based on ASM

HE Yong-Jian, FENG Shou-Peng, ZHOU Rong-Kun

. 2011, 24(10):  119. 

Abstract ( 1394 )   PDF (746KB) ( 780 )  

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This paper makes several improvements of traditional active shape model for face orientation.It is hard for the conventional ASM to match accurately on each landmark;what's more,the trained model depends heavily on the clutter background.In view of the drawbacks mentioned above,firstly,we propose the local texture model in clutter background;secondly,we design the 2-D model for corner points;and lastly,we add fringe restrain in the model of partial grey level,so that the points with strong fringe information could have more possibility to become the perfect candidate points.Experiment results show that the improved algorithm is superior to those available in accuracy and robustness.

Research on FPGA Control in Super-Resolution Color Imaging System

ZHOU Zhuang, BAO Wei-Long

. 2011, 24(10):  122. 

Abstract ( 1114 )   PDF (790KB) ( 748 )  

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A flame work of a super-resolution imaging system with the non-conventional image-carrying fiber bundles which adopts DSP (DM642) and FPGA as the core is presented in this paper.The function of FPGA in the system,including bilinear interpolation of Bayer images,image format conversion between RGB and YUV,communication with USB controller and so on,are discussed in detail.In this system,the FPGA connects with video port of DM642 directly to transmit YUV color space image data.This communication structure is simple,but it can guarantee high rate of data transmission,DSP greatly reduced its workload by extracting Y component directly from the YUV color space data to compute.This system gives full play to the quickness of hardware implementation in FPGA and enhances the system capability;and it has such advantages as adaptability,and flexibility.

A Detection Method for Infrared Small Target Based On BEMD

SHAO Feng

. 2011, 24(10):  126. 

Abstract ( 987 )   PDF (760KB) ( 724 )  

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A new method is provided based on the empirical mode decomposition (EMD) to solve the difficulties of infrared image dim small target detection in complex background of sky and sea.The decomposition in this paper is based on Delaunay triangulation and Radial Basis Function.Its application in infrared images has shown that the performance of the algorithm can detect infrared small target in background of sky and sea exactly and quickly.The method presented in this paper appears instructive from both theoretical and practical points of view.

Geological Mapping System Based on Object Oriented Methods

ZHENG Kai-Dong

. 2011, 24(10):  130. 

Abstract ( 1151 )   PDF (536KB) ( 758 )  

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The theory of geological graphics mapping system based on Visual C++ object-oriented methods is formulated.The programming implementations of well-position and contour maps using Visual C++ are presented.The characteristics of the system are summarized.

Typical Fault &Treatment Way for OVATION System Operation

WANG Yu-Mei

. 2011, 24(10):  132. 

Abstract ( 1743 )   PDF (612KB) ( 611 )  

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Westinghouse Corporation has put forward the OVATION system on the basis of conclusion of broad usage experience of WDPF system.Combining the system application in practice in our enterprise,this article makes analysis of several typical faults arising during operation,and puts forward the corresponding disposal methods.

Evaluation of Thermal Power Post Project and its Application

FENG Zhi-Guanng

. 2011, 24(10):  136. 

Abstract ( 979 )   PDF (521KB) ( 566 )  

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Along with the consistently deepening investment management of the infrastructure project of the country,the post-project evaluation has become an important means for measuring the decision-making level.The post-project evaluation of the thermal power construction is necessary to be done after thermal power plants and regional power generating companies have put the project into operation.Through the introduction of the post-evaluation method and the conclusion of the practical application,the text has provided methods for the operation of the post-evaluation of the thermal power project.

Use of Multimedia Systems to Improve Teaching in Public

SHI Shao-Jing

. 2011, 24(10):  138. 

Abstract ( 986 )   PDF (383KB) ( 624 )  

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The multimedia teaching network system is a special teaching platform which incorporates video,images,sounds,and animated text and other multimedia information into the real-time control of dynamic the teaching process to realize real-time multi-transmission interaction based on the data sharing function of  a computer network.Teachers can use the platform to give multimedia interactive teaching to hundreds of students at the same time  This paper takes Lanstar teaching network for example to discuss the effects and function of the system in the university public rooms and the teaching strategies.It demonstrates that teaching in the public room installed such networks can improve teaching and learning.

Analysis the Frequency of Aerobics Aesthetic Education Teaching Statistical

LV Mo

. 2011, 24(10):  140. 

Abstract ( 1036 )   PDF (675KB) ( 581 )  

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Aerobics production and development is a gradual process,which originated in the human to human health and the pursuit of beauty,aerobics and human history of the development is closely related to the formation of aesthetic,and beauty is aerobics teaching and research closely related with the essence of beauty is an important issue. Text starting from the definition of beauty,aesthetic,educational methodology elaborated on the various perspectives of teaching aerobics aesthetic education,and conducted a wealth of practical statistics.