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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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The Extension Method to Endow with Weight Based on the Variance of Dependent Degree

LI Qiao-xing,LIU Si-feng

Journal of Guangdong University of Technology. 2007, 24 (1): 1-4.

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The extension evaluation method has been a more successful system one to evaluate the alternatives,schemes and strategies.For an integrated evaluation problem with several characteristics,it is a key to endow with weights.To utilize each dependent degree of the basic element’s characters,this paper proposes the objective method to get weights based on their variance,and introduces the integrated approach to the subjective and objective ones.The weights by the methods are obtained through the dep...

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Extension Method for Multi-user Cooperation

CAI Zhuo-heng,LI Wei-hua

Journal of Guangdong University of Technology. 2007, 24 (1): 5-8.

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This paper introduces an analysis process and the extension model development by extension method for the conflict of multi-user desires and cooperation in sharing limited resources.Based on the extension method,a way is presented by changing external resources conditions that make users cooperate without changing their desires and achieve the goal of automatic cooperation.A real life traffic problem is analyzed as an example and the strategy solving problem showed.

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Study on Structure and Photoelectron Spectroscopy of B_mN_n and B_mN_n~-(m+n≤5) Clusters

LIN Jia-yong1,HU Yi-hua1,CHEN Ren1,CHEN Xue-hua1,WU Hua2

Journal of Guangdong University of Technology. 2007, 24 (1): 9-13.

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The geometries,electronic states and vibrational frequencies of BmNn(m+n≤5) neutral and anionic clusters have been investigated by using B3LYP method of the density functionnal theory(DFT) at the level of 6-31G(d).Moreover,the vertrical detachment of BmN-n(m+n≤5) and the adiabatic electron affinities of BmNn(m+n≤5) are discussed at the same level.The results show that the ground state structure of BmNn(m+n≤5) clusters are planar except BN、B2N、B3N、B2N3 and B3N2 clusters due to linetype.For BmN-n(...

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Effects of Reaction Temperature on the Aromatization Reaction of Huabei C4 Liquefied Petroleum Gas

YOU Hong-jun

Journal of Guangdong University of Technology. 2007, 24 (1): 14-18.

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By using Huabei C4 liquefied petroleum gas as a feedstock,the effects of reaction temperature on the aromatization product yield,conversion,MON,RON,gas product compound and solvent product compound are researched in a confined fluidized bed reactor.The experimental result shows that with the increasing of reaction temperature,the yields of off-gas,liquefied petroleum gas and coke increase,but the yields of gasoline and diesel oil drop,conversion of Huabei C4 liquefied petroleum gas is over 97%....

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The Genetic Algorithm Based on Bayesian Net

CHEN Xi-shu

Journal of Guangdong University of Technology. 2007, 24 (1): 19-21.

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Theory of Bayesian is the base of probability inference.It is permitted to infer reversely any probability statements.With the help of the theorems of probability theory,this article transfers the theory of Bayesian to the genetic algorithm,and then expands the applicable scope of the latter.

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General Unsigned Multi-bytes Division Based on Single-chip Assembly Language

YAN Ke-jian,ZHANG Miao,WANG Li-qiong

Journal of Guangdong University of Technology. 2007, 24 (1): 22-25.

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This paper presents a series of improved algorithm in 8051 to achieve the high reliability computing multi-byte division.The algorithm updates the traditional "shifting-subtracting" algorithm while owns the limitations of the unsigned multi-byte division,and it solves the overflow problem.And via experiments,the accuracy of results proves correct.The algorithm is simple,and with strong adaptability,high reliability and very good practicality.

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Cryptanalysis of Mu-Varadharajan Group Signcryption Scheme

CAO Jia-li1,GAO Chong-zhi2

Journal of Guangdong University of Technology. 2007, 24 (1): 26-28.

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This paper demonstrates a concrete attack to show that the MV group signcryption scheme fails to have unforgeability.Our attack allows a dishonest receiver to forge a valid ciphertext as if the genuine sender generated it.

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Parallel Computing Based on Linux Cluster and MPI

LI Shi-ling,FU Xiu-fen,LIANG Wen-jian

Journal of Guangdong University of Technology. 2007, 24 (1): 29-32.

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Cluster computer is the researching hotspot in parallel computer system of high performance.To the enterprises and research projects which have the demand of mass computing,the parallel computing system based on cluster is their best choice.The conception of Linux cluster technology and parallel program design are introduced,and a parallel program example is given to evaluate the performance of Linux cluster system.

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Application of MATLAB in Improved Median Filtering

YUAN Xi-xia,YUE Jian-hua,ZHAO Xian-ren

Journal of Guangdong University of Technology. 2007, 24 (1): 33-35.

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The median filtering is a common method in image processing,but it is limited when it faces the swash noise of space high density,because it depends on the fixed windows and the data points.This article uses the MATLAB tool box to improve the method of common median filtering.The improved one can solve the problem better when compared with the common one.

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A Novel Method for Evaluating the RCS of Microstrip Antenna

XIONG Xuan1,HE Xiu-lian2

Journal of Guangdong University of Technology. 2007, 24 (1): 36-39.

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A method for analyzing the RCS of microstrip antenna with the MOM is presented in the paper.As the additional mode basis function is introduced,the effect of the pin can be analyzed correctly.A novel method is proposed to compute the RCS of arbitrarily loaded microstrip antenna using the scatter field of the microstrip antenna of two different loads.Numerical results validate the method in the paper.

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A New Type of Withstanding Voltage Test Device in Which the Voltage Can be Adjusted Automatically

GONG Xiong-wen1,WANG Ren-huang1,YAN Reng-you2,ZHOU Yu1

Journal of Guangdong University of Technology. 2007, 24 (1): 40-42.

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This paper gives a design of a novel withstanding voltage test device in which the test voltage can be adjusted automatically.The high voltage output is adjusted by electromotor controlled by PWM signals.Overvoltage and overcurrent protection are provided by both software and hardware.A RMS-to-DC converter and a high precision ADC are used to get high measuring accuracy.The high voltage adjusting method is improved.

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Application of Microcontroller in Detention Houses’ Audio Monitoring System

WU Yu-lin,PANG Wen-zhu,ZHOU Hui-jun

Journal of Guangdong University of Technology. 2007, 24 (1): 43-46.

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This paper introduces the design and realization of an audio monitoring system based on microcontroller as its main controlling core,which can realize the functions of broadcast,monitor and alarm.It can effectively enhance the detention houses’ control and management.

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Application of Inserts to Horizontal-type Central Hot Water Supplier for Heat Transfer Augmentation

YIN Yu-sheng

Journal of Guangdong University of Technology. 2007, 24 (1): 47-49.

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In this paper,the principle is studied of poor heat transfer effect in the three line horizontal central hot water suppliers which are popularized in south China region was studied.An idea of putting inserts like twisted belts and spiral wire into the third line pipe to augment the heat transfer effects is put forward.The experimental and calculating results shows that the heat transfer situation is improved.

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Mathematical Statistics Analysis of the Static Wear Test Data

YAN Zhong-de,XIE Zhi-wei

Journal of Guangdong University of Technology. 2007, 24 (1): 50-52.

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A method is introduced that the experimental data obtained in the static wear test has been studied by mathematical statistics.The results show that determination as exact as possible could be made in finite experiments with the method.

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The Principle and Application of the Static Analysis of Continuum Beam on Elastic Foundation

HUAN Juan-qian

Journal of Guangdong University of Technology. 2007, 24 (1): 53-55.

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Based on the visual work principle of structure analysis,a general formula for the displacement calculation is deduced for the static analysis of the beam on elastic foundation.The static analysis method is introduced for this kind of continuum beams.The finite element method is also used to compute such structures.The result is the same,so the correctness of the formula proposed is proved in this paper.

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Analysis of Influence of Cushion on Stresses and Displacements of the Working Well

REN Feng-ming,YUAN Bing

Journal of Guangdong University of Technology. 2007, 24 (1): 56-60.

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This paper researches the working well with different thickness of cushion and different soil stratums by the FEM,and emphatically probes the effect of the cushion on the stresses and the displacements of the working well.By calculating and analyzing,this paper concludes the their influence law.

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Analysis of Multiple Cracking of Concrete Bridge Overlays

TAN Cha-sheng1,ZENG Qing-dun2

Journal of Guangdong University of Technology. 2007, 24 (1): 61-65.

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Using the analytical methods of composite mechanics for reference,a layering shear-lag model is established for the system composed of bridge deck ply and overlay.The multiple cracking problem of concrete bridge overlays for concrete highway bridges under minus moment is studied.Then the crack spacing or density of both conventional and steel fiber-reinforced concrete bridge overlays has been calculated.The results obtained are in a relatively good agreement with the failure situation for an eng...

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Analysis of Affecting Factor of Settlement Coefficient for Subgrade on Soft Soil Base

TAN Shi-lin1,LUO Zhi-qiang2

Journal of Guangdong University of Technology. 2007, 24 (1): 66-69.

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According to the actual problems of the settlement calculation of the subgrade on the soft soil base,an experience method,commonly used in the highway engineering,is discussed.The influence of the embankment filling height,base treatment method,filling construction rate,and geology conditions on the settlement coefficient is analyzed;and calculation model of the comprehensive settlement coefficient is presented,which has instructive meaning to ensure the subgrade engineering qualities on the sof...

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Operation and Application of Fuzzy Error Set

LI Min,GUO Kai-zhong

Journal of Guangdong University of Technology. 2007, 24 (1): 70-73.

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Based on the theory of error-eliminating and method of fuzzy math,this paper makes some discussions to the operation and application of fuzzy error set and puts forward one theorem.It gives the concept of replacement,and replaces the errors in different grades to decrease or eliminate the error.

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Note on “Nearest Interval Approximation of a Fuzzy Number”

LI Jian-xin1,HU Gang2

Journal of Guangdong University of Technology. 2007, 24 (1): 74-76.

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A method is discussed about the interval approximation of a fuzzy number,published by P.Grzegorzewski in Fuzzy Sets and System.It is demonstrated with examples that there are some serious mistakes in the method.

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Absolute Stability for a Class of Nonlinear Neutral Control Systems

YANG Ge-feng

Journal of Guangdong University of Technology. 2007, 24 (1): 77-81.

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This paper deals with the absolute stability of a class of neutral Lurie control systems with time-varying delays.Some stability criteria in terms of matrix inequalities(LMIs) are obtained based on Lyapunov functional method,which is only to solve LIMIs for verifying the stability conditions.An algorithm is also presented to obtain a sufficient upper bound of delay for absolute stability.Two numerical examples illustrate the effectiveness of the proposed results.

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Rank Identities of a Class of Matrices

QIU Hong-bing

Journal of Guangdong University of Technology. 2007, 24 (1): 82-84.

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Some rank identities of a class of matrices are obtained with the block matrices and its generalized elementary operation.

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Positive Solutions for First Order Periodic Boundary Value Problem with Impulses

QIU Zhi-guo,PENG Shi-guo

Journal of Guangdong University of Technology. 2007, 24 (1): 85-88.

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By using the fixed point theorem on cone,this paper studies the existence of positive solutions for first order periodic boundary value problem with impulses.

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Weak Efficiency in Vector Set-valued Optimization Problem

LIU Wei,CAI Qian-feng

Journal of Guangdong University of Technology. 2007, 24 (1): 89-91.

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In this paper,an example is presented to explain the invalidity of result of weak efficient solutions for set-valued optimization proposed by Jahn and Rauh.By improving the conditions,the optimality conditions of weak efficient solutions is obtained in vector set-valued optimization problem.

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Logical Consistency of the Time-Space Theory of Negative Energy System

LIU Fa-xing

Journal of Guangdong University of Technology. 2007, 24 (1): 92-94.

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The paper briefly describes the process of the negative energy concept evolving from physics-aided calculation to substantial physics concept.It then proves the logical consistency of the Time-Space Theory based on the deduction that in the frame of Relativity Theory,the negative energy particle with positive quality has different time-space changing relations with positive energy system.

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