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Bimonthly,Started in December 1984 Pesponsible institution:Department of Education of Guangdong Province Sponsor:Guangdong University of Technology Edited,Published,Distributed:Center of GDUT of GDUT Journal,Periodical Center of GDUT

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For the maintenance of academic integrity and ethics, all members of Journal of Guangdong University of Technology (editors, evaluation experts, and authors) must abide by the basic principles of this journal. This editorship strictly implements the peer review system, reviewing all contributions by going through a three-tier review precedure, namely, the editors' initial review, expert evaluation, and then the final review of deputy editors and editors-in-chief, guaranteeing and improving the quality of all the articles. This journal formulates this statement based on the guiding principles and criteria issued by the Committee of the Publication Ethics (COPE).

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Status and Trend of Wind/Solar Power Generation

CHEN Jing-hua,YANG Yi-min

Journal of Guangdong University of Technology. 2007, 24 (03): 1-5.

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Wind energy and solar energy are abundant and renewable energy sources.Developing wind and solar power generation is an important move,which will contribute to improving energy structure,reducing environment pollution and protecting the environment.This paper introduced the status and trend of wind power and solar power.As a result of the discontinuous characteristics of wind energy and solar energy,hybrid power generation system was put forward.At last it introduced current research situation a...

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Reseach Status of the Trypsin Inhibitor

TAN Zhu-jun,SHEN Ming-cai,ZHANG Feng,HU Hua-ping

Journal of Guangdong University of Technology. 2007, 24 (03): 6-9.

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The trypsin inhibitor is a kind of substance that can inhibit trypsin activity.This paper reports the reseach status of trypsin inhibitor preparation from different materials and its clinical application.

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Study on Solid State Preparation of Nanometer Zirconia

HUANG Yu-ping,HUANG Hui-min,ZHENG Yu-ying,TANG Yun,JIANG Zhi-jian

Journal of Guangdong University of Technology. 2007, 24 (03): 11-14.

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A new method to prepare ZrO2 nanoparticles is described.Precursors of ZrO2 were synthesized by solid state reaction of ZrOCl2·8H2O to C2H2O4·2H2O.Precursors were characterized by TG/DSC and the properties of zirconia were studied with aids of XRD,TEM.The effect of grinding and calcination on crystal was also investigated.The result shows that ultrafine zirconia with average particle size of 11nm has high purity and even distribution,and the main phase of the powder is tetragonal phase.

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Martelli’s Chaos of the Shift Maps on the Inverse Limit Spaces

CHENG Zhu-qiong,MA Dong-kui

Journal of Guangdong University of Technology. 2007, 24 (03): 15-17.

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Let(X,d)be a compact metric space,and let f:X→X be a continuous surjection.Its inverse limit space is lim←(X,f),and σ is the shift map on lim←(X,f).This paper has proved that f is Martelli chaotic if and only if σ is Martelli chaotic.

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On the Connected Coverings of Graph K₆ with the Voltage Group Z₄²

WU Xiao-fang

Journal of Guangdong University of Technology. 2007, 24 (03): 18-20.

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A new method is used to discuss the connected coverings of graph K6 with the voltage group Z42,and we find that there are no 2-transitive regular connected coverings of K6 satisfying the following two conditions:the covering transformation group is isomorphic to Z42,andthe fibre-preserving automorphism subgroup acts 2-arc-transitively on the graph Γ~=Γ×A.

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Solution and Perturbation Analysis of the Nonlinear Matrix Equation X+A~* F(X)A=Q

CHEN Xue-song

Journal of Guangdong University of Technology. 2007, 24 (03): 21-23.

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The nonlinear matrix equation X+A*F(X)A=Q is investigated.Sufficient conditions for the existence and uniqueness of a positive semi-definite solution are derived.Also conditions are given under which the solution depends continuously on the matrices A and Q.New perturbation estimates for the equation are obtained.

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Neural Networks Representation of Decision Models

LIU Wei,CAI Qian-feng

Journal of Guangdong University of Technology. 2007, 24 (03): 24-27.

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This paper discusses some decision models,and analyze the neural networks representation of the popular multifactorial decision models,such as additive weighing model,distance model,multifactorial evaluation and multilayer model.Corresponding neural netwoks representation and calculations were given and illustrated with examples on the computer.

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On Recoverability of Blind Source Separation Based on Sparse Representation

TAN Hua-hao,LIU Hai-lin

Journal of Guangdong University of Technology. 2007, 24 (03): 28-31.

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This paper discusses the recoverability of underdetermined blind source separation(BSS),based on a two-stage sparse representation approach.Within the stochastic framework blind source separation it is usually predicted that source signals are sufficiently sparse.This paper estimates recoverability probability when source signals are not sufficiently sparse,which not only reflects the relationship between the recoverability and sparseness of sources but also indicates the effectiveness of the tw...

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Sliding Mode Control of Low Chattering Non-singular Terminal

ZHANG Da-ke1,HU Yue-ming2,HU Zhan-hu1

Journal of Guangdong University of Technology. 2007, 24 (03): 32-36.

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In order to overcome the chattering in normal sliding mode control(SMC),and take advantage of the good characteristics of quick convergence in the terminal SMC,non-signular terminal sliding and terminal reaching law are applied to the design of sliding mode control,which is aimed at second-order affine nonlinear systems.Low chattering and non-singular terminal SMC is reached and proved to be good robustness.

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Decentralized Robust Control of Uncertain Interconnected Large-Scale Discrete Time-Delay System——LMI Approach

CHEN De-yin,JIN Chao-yong

Journal of Guangdong University of Technology. 2007, 24 (03): 37-41.

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The decentralized robust control problem of a class of uncertain interconnected large-scale discrete time-delay systems,which satisfy the matching conditions is considered.By constructing Lyapunov functions,linear matrix inequality(LMI) is employed.A few sufficient conditions for such large-scale systems are derived.A convex optimization of LMI constraints is formulated to design a decentralized state feedback control with smaller gain parameters,which enables the closed-loop system to be asympt...

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Computer Aided XRD Phase Analysis of Thermoelectric Materials

LI Yu-yu,ZHANG Ren-yuan

Journal of Guangdong University of Technology. 2007, 24 (03): 42-45.

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The characteristics of the thermoelectric material phase analysis and the methods of computer aided XRD phase analysis were discussed,based on database technology.The Database of the thermoelectric material phase analysis was established,based on the document of the PDF2 powder XRD diffraction.The parameter was picked up by using Origin 7.0 to supplement the standard data of the thermoelectric material phase analysis.

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One Method of Vector Classifying Based on the Direction of Wavelet Coefficients

LIU Yi,PAN Bao-chang,ZHENG Sheng-lin

Journal of Guangdong University of Technology. 2007, 24 (03): 46-49.

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A new method of vector classification,referring to the image compression algorithm based on wavelet transformation and vector quantization,is presented.It utilizes direction and correlation between wavelet coefficients.The threshold selection is based on reordered wavelet coefficients series.Experimental results demonstrate that the principle of this method is simple and available.This method has good stability in classifying different images and improves the efficiency of the image compression ...

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The Parameters Location of Meter Dial Plate Based on Wavelet Decomposition and Mathematical Morphology

ZHANG Yan-ling1,2,WANG Ren-huang1,NING Zhi-gang1,ZHU Shun-ping1

Journal of Guangdong University of Technology. 2007, 24 (03): 50-53.

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A new segmentation algorithm,based on wavelet multiscale analysis and mathematical morphology for locating the parameters of meter dial plate,is presented.By this algorithm,the edge components of different spatial resolutions and directions are acquired,the useless information is filtered and the last region of parameters of meter dial plate is located.

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Authentication System Based on Singular Value Decomposition Dual Network

GAN Yan-fen,PAN Bao-chang,ZHENG Sheng-lin,ZHOU Ze-hua,HUANG Chuang-hui

Journal of Guangdong University of Technology. 2007, 24 (03): 54-56.

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In order to resolve the problem on current network development and security,the dual network authentication system was proposed,based on singular value decomposition.ID and fingerprints were authenticated via the singular value decomposition watermark technology which combined ID with fingerprints,making ID and fingerprints relatively independent,thus strengthening the concealment and security of ID.Experimental results indicate that the system is stable,safe and reliable.

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A Method of Computer Aided Design of the Holographic Gratings

SHI Zhi-wei

Journal of Guangdong University of Technology. 2007, 24 (03): 57-59.

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Based on the theory of high spatial frequency grating with variable spacing,this paper used VC++ to write the simulated program of holographic plate.Its function is that people can adjust parameter and study the distributing rule of interference fringe by a change in data,so it is very beneficial to fabricating the real gratings.

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Strategy Generating of the Parking Problem Based on Agent and Extension Methods

ZHANG Xi-hua,LI Wei-hua,ZHAO Juan,CHEN Rong-zheng

Journal of Guangdong University of Technology. 2007, 24 (03): 60-63.

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With knowledge of extentics and the Agent technology,the strategy to help tourists to choose a car park is discussed,based on information-knowlege-intelligence formatization system.The Agent technology is used to enhance effectirely the automation of intelligent tools,which can automatically make correct,reasonable and reliable responses to the changing environment.

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Research on Key Technologies of the Distributed and Heterogeneous Data Buffer System in Multidatabase Middleware

ZHAO Jie1,2,ZHANG Peng2,QI De-yu2

Journal of Guangdong University of Technology. 2007, 24 (03): 64-68.

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The Distributed and Heterogeneous Data Buffer(BHDB) is an important part of multi-database middleware.This paper discusses data consistency management of the system,improves the traditional technology,and lucubrates the data replication strategy,local data source’s plug-and-play mechanism,data namespace and system security management,which are the key technologies and the basis of the system realization.

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Design and Implementation of College MIS Based on IC Card

ZHOU Hui-jun1,CHEN Jing-hang2

Journal of Guangdong University of Technology. 2007, 24 (03): 69-72.

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The system adopts the client-server architecture,combines SQL SERVER database and Visual Basic to develop on window 2000,and exports to Excel to create report.

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Printed Circuit Board Image Mosaics Based on Wavelet Transformation

LUO Bing,ZHANG Yun,ZENG Xin-yi,JI Xiu-xia

Journal of Guangdong University of Technology. 2007, 24 (03): 73-75.

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In PCB SMT assembly automatic machine vision inspection,image mosaic is necessary for getting an entire PCB image.Because of inhomogeneous illumination in this engineering image capture,conventional mosaic methods didn’t word well.High frequency coefficients of wavelet decomposition can reflect the contour of the image and that of illumination variety is relative small,so image mosaic based on wavelet decomposition can be robust for PCBA inspection.Using projection of wavelet decomposition coeff...

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Physical Explanations for Three Types of Failure Criteria

YANG Xue-qiang1,GONG Quan-mei2,LI Zhang-ming1

Journal of Guangdong University of Technology. 2007, 24 (03): 76-83.

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Extended twin shear strength,Lade-Duncan and Matsuoka-Nakai failure criteria,could capture some important strength failure characteristics such as tensile stress,friction,and curved meridian et al.of geo-material with good accuracy.Based on true triaxial test data of red sandstone and target error function established between testing values and predicting values,corresponding parameters of the three failure criteria are identified through searching minimum values of the target error function.Bas...

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Non-coaxial Behavior of Soil under Plane Strain Conditions

SHI Hong-yan,BAI Lin

Journal of Guangdong University of Technology. 2007, 24 (03): 84-87.

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The origin causing the non-coaxial behavior of soil under plane strain conditions is theoretically discussed,and the influence of the initial anisotropy of soil and the change of stress states on the non-coaxial behavior of soil is also investigated.The investigation shows that the main reason for the non-coaxial behavior is the directional changes of stresses(i.e.,rotation of principal stress axes).

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Research into the Deteriorations of Frame Arch Bridge Slabs with a Slightly Curved Bottom

TAN De-pan1,JIANG Hai-bo1,HE Bo-qing2,L Yan2

Journal of Guangdong University of Technology. 2007, 24 (03): 88-91.

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The common deteriorations of slabs with a slightly curved bottom are introduced.By analyzing local finite element stress,deteriorations of slabs are considered to be caused by the lack of slab thickness and arch-rib lateral stiffness.The methods for preventing further deteriorating and the maintaining strategies are proposed,which are validified by the finite element analysis.

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Characteristic Analysis of Asphalt Covered Layer Building up Stress Adsorbed Course

LUO Zhi-qiang

Journal of Guangdong University of Technology. 2007, 24 (03): 92-95.

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Asphalt-covered layers are applied to the old cement concrete pavement reconstruction domestically and overseas.However,there exist the problems of how to control the time of reflectiion crack’s occurrence and crack expansion rate.It is analyzed that asphalt covered layers to prevent reflection crack are to control crack instead of eliminating it,and it is discussed building up stress adsorbed course play a decisive role in the operation property and operation life of the asphalt-covered layers.

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An Optimization Design of Schwedler Reticulated Shells

SUN Shang,LIU Hai-jun

Journal of Guangdong University of Technology. 2007, 24 (03): 96-99.

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In the light of the imperfections of the selection of the Reticulated shell optimization variants only limited to the sections in the present documents,this paper proposes comprehensive optimization design including the shelly radius、net size(the shelly nodes number and the layers number),the diameter and thickness of steel tube,taking Schwedler Reticulated Shell as an example.The results of optimization indicate that it is remarkable.

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The Analysis of Radiated Sound Field of Traffic Circle

WU Zeng-wei1,XU Tian-ping2

Journal of Guangdong University of Technology. 2007, 24 (03): 103-.

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The radiated sound field of traffic circle radial transducer is researched.After analyzing the pressure distribution of the sound field,it concludes that the pressure distribution of the traffic circle radial transducer is not radial but vertical,and the broader the ring size is,the more sidelobes there are,the sharper the mainlobe is.By discussing the near sound field distribution,it shows that there is a critical pole between the near field and the far field,and the variation of the critical p...

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Cost Control Methods for Shear Wall Residential Buildings in the Design Stage

WANG Bin

Journal of Guangdong University of Technology. 2007, 24 (03): 104-108.

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With regard to three shear wall residential buildings in Shanghai,cost control methods in the design stage were studied in view of architecture arrangement,structure arrangement,component design and material selection and so on.The study results indicate that some methods can control the cost of shear wall residential buildings in design stage effectively as follows:simple,regular,symmetrical architecture and structure arrangement;construction reinforcement in shear walls,differentiation between...

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