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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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Fuzzy Comprehensive Evaluation of Techniques of Exhaust Stack in Kitchens in Multi-storey Buildings

Liu Li-ru; Chen Zhi-yong; Lin Ji-nan; Lin Guang-dou; Xu Zong-jin; Xiong Zheng-wei; Lin Wen-zhou

Journal of Guangdong University of Technology. 2009, 26 (1): 1-.

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Based on the common techniques of exhaust stack in kitchens,which are primary-secondary type,pressure-variation type,back valve type,and pressure-variation without backflow type,it presents the fuzzy comprehensive evaluation of exhaust effects,compatibilitg with buildings,space requirement,ease of construction,costs and so on,compares all types of exhaust stack from the standpoints of techniques and economy with the method of fuzzy comprehensive evaluation,and provides the basis for consumers with different...

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Design of Water Diversion and Drainage in Old Concrete Pavements

Yin Ying-mei; Zhang Rong-hui

Journal of Guangdong University of Technology. 2009, 26 (1): 2-.

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According to the practice of G321 test road reconstruction,water had bad effects on the pavement because serious water-induced distress exists widely in traditional concrete pavements. It discusses the water diversion and water removal design of pavements to prevent the permeability of free water infiltrating into pavements,to remove rapidly the pavement surface water and the water infiltrating into pavements,and to strengthen the water-proof property of pavement structures. Based on the project practice,so...

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Design of and Experimental Research on Rigid Pile Composite Foundations

He Chun-bao1; Zhu Li-chun1; Li Xiao-yi1; Chen Jin-kun1; Kuang Jun-bin1; Huang Ju-qing2

Journal of Guangdong University of Technology. 2009, 26 (1): 3-.

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An engineering example of rigid pile composite foundations is given. The bearing capacity of ground and calculation of rigid pile composite foundations were analyzed,and the counter force of the ground,settlement of the building were measured during the construction. The results show that this method coincides well with the practice,and it can be used to solve the calculation problem of practical engineering.

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New Reinforcement Method for Strip Foundations

Chai Wei-si; Cao Zhao-feng

Journal of Guangdong University of Technology. 2009, 26 (1): 4-.

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A new method for strip foundations reinforced by anchor bars to improve their bending strength is put forward. The method for single strip foundations reinforced by anchor bars is analyzed by combining the analytic method with the iteration and force method. Moreover,the method for cross strip foundations is analyzed by using the concentrated force distribution method.

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Research on the Reconstruction of Flocculation of Petrochemical Wastewater Treatment

Wang Sha; Luo Jian-zhong; Guan Hong-an; Ouyang Yong; Chen Bao-cai

Journal of Guangdong University of Technology. 2009, 26 (1): 5-.

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Petrochemical wastewater includes much oil,expecially emulsification oil which is hard to be removed. Many factors which influence the effect of flocculation of petrochemical wastewater are studied. The results show that macromolecule flocculation PAC can have the best effect. When its dosage is 50 g/m3 and the water s pH ranges from 8 to 11,the best removal effects of turbidity and COD can be got,95 % and 60 % respectively.

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Concentration Variation Characteristics and Time-frequency Analysis of PM10 in Zhanjiang

Zhang Yu 1; 2; Niu Sheng-jie1; Yu Hua-ying1

Journal of Guangdong University of Technology. 2009, 26 (1): 6-.

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Concentration Variation characteristics of PM10 in Zhanjiang during 2001~2007 were analyzed by means of the numerical statement method and time-frequency analysis. The results show that the PM10 concentration in Zhanjiang varies obviously from day to day and fits the peak type,which indicates a right asymmetric distribution shape with great decline.The variance and annual spans appear to have decreased these years. The mean value and variance of PM10 are great in winter and spring,while small in the other t...

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Stress Corrosion Cracking Behavior of 5083 Aluminum Alloys in 3.5%NaCl Solution

Leng Wen-bing; Yuan Ge-cheng; Ni Xue-ming; Lu Hao-dong

Journal of Guangdong University of Technology. 2009, 26 (1): 7-.

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The stress corrosion cracking(SCC) behavior of aluminum alloys 5083 in air and 3.5 %NaCl solution has been investigated by using slow strain rate tension and scanning electron microscopes,and the effects of pre-deformation and strain rate on the SCC behavior of the alloy have been studied. The results indicate that aluminum alloys 5083 are susceptible to SCC which can occur in 3.5 %NaCl solution but not in air. The alloys are more susceptible to SCC at the strain rate 1.0×10-6 s-1 than at 0.33×10-5 s-1 ,and...

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Two and Three-dimensional Stability Analyses of Slopes with Local Load on Top Surface(Ⅱ)——Using Upper-bound Method of Limit Analysis

Yang Xue-qiang1,Au S K2,Cheng Y M3,Fung W H4,Li Zhang-ming1

Journal of Guangdong University of Technology. 2009, 26 (1): 8-.

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Combining kinematically admissible three-dimensional slope failure mechanism based on the upper-bound theory of limit analysis,slope safety factor with different ratio of length to width of uniform rectangle pressure acted on slope top surface is studied systematically,and is compared thoroughly with the safety factors calculated by using FLAC software,and further with model test results,corresponding reliability of the upper-bound solutions to the three-dimensional slope stability is further di...

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The Large Deformation Analysis of Rubber-tire Wheels of New Light-rail Vehicles

Zou Jin-hua1,Wang Rong-hui2,Wei De-min2

Journal of Guangdong University of Technology. 2009, 26 (1): 9-.

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On the basis of the large deformation constitutive laws of rubber materials,a proper curved shell block element that can reflect properly steel tyre rubber rim is created by T.L. format of FEM. The contact pressure of rubber rim is calculated according to Hertz theory of elasticity,and then the large deformation analysis of the rubber rim is obtained. The effectiveness of this method is verified by the results of examples and small scale model experimental results.

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Perturbation Bounds of Semi-definite Positive Factors of M-P Inverse under Non-Preserving Rank Perturbating

Wu Qiang

Journal of Guangdong University of Technology. 2009, 26 (1): 10-.

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Suppose the generalized polar decomposition of A+ and + are respectively A+=QH and +=■■,and H and ■ are n×m semi-definite positive factors.By using singular-value decomposition,unitarily invariant norm ‖·‖ and Frobenius norm ‖·‖F,the perturbation bound of semi-definite polar factors of Moore-Penrose generalized inverse matrix A+ under non-preserving rank perturbating is researched. 更多还原

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On Graphs Whose Lower Bound for the Energy Depends on the Degree of Vertices

Liu Xiao-yan,Guo Da-chang

Journal of Guangdong University of Technology. 2009, 26 (1): 11-.

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Let G be a graph on n vertices,A(G) be the adjacency matrix of G,and λ1,λ2,…,λn be the eigenvalues of A(G).The energy of G is defined as E(G)=sum from i=1 to n|λi|.The results show that the energy of quadrangle-free graphs,whose maximal degree is not bigger than 3,is not smaller than n-1.Furthermore,such graphs whose energy exceeds the number of its vertices are studied,and one kind of graphs that are hyperenergetic is obtained. 更多还原

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The Steady State of Dissipative Boltzmann Equation

Xiao Zhi-tao1,Jin Shou-bo2

Journal of Guangdong University of Technology. 2009, 26 (1): 12-.

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It studies the spatially homogeneous dissipative Boltzmann equation.For solutions satisfying conservation of mass and momentum,and decreasing of energy,in the Pseudo-Maxwellian approximation,the uniqueness and regularity of the steady state of the equation are established.

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The Asymptotic Stability of Networks with Leakage Delays

Xie Zu-wei,Peng Shi-guo,Luo Ying-hua

Journal of Guangdong University of Technology. 2009, 26 (1): 13-.

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The asymptotic stability of Hopfield networks with leakage delays is studied.Under the assumption that the nonliear stimulating function meets the needs of Lipschitz,by means of constructing suitable Liapunov function,Dini’s derivative and functional analysis techniques,some simpler criteria for asymptotic stability of the unique equilibrium are established.

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The Global Exponential Stability of Negative Feedback Terms with Continuous Time-delays of BAM Neural Network

Luo Ying-hua,Peng Shi-guo

Journal of Guangdong University of Technology. 2009, 26 (1): 14-.

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Negative feedback terms of BAM neural network model with the continuous time-delays are researched.By using contraction-mapping theory to determine the unique equilibrium for this BAM system,and contructing the Lyapunov function,it finds the sufficient conditions for the BAM global exponential stability.

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A New Image Compression Encoding Algorithm Based on Zerotree Wavelet

Zhu Wei-zhao,Wang Fu-long,Li Zhi-guang

Journal of Guangdong University of Technology. 2009, 26 (1): 15-.

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Based on the deep research on zerotree wavelet compression encoding algorithm,a kind of improved wavelet zerotree encoding algorithm is proposed. Firstly,the haar wavelet basis was used to carry out the wavelet decomposition of the image. After the decomposition image,the EZW encoding was made,not decoding the image immediately,but before the EZW decoding,the Huffman encoding and decoding process was included. The experimental results prove that this algorithm,compared with the EZW algorithm,

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A Multisensor Data Fusion Estimation Algorithm for Vehicle Maneuvering Target Tracking

Zhang Wen-feng3,Hu Zhen-tao2,Cheng Jian-xing3

Journal of Guangdong University of Technology. 2009, 26 (1): 16-.

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To solve the vehicle’s tracking problems with real time and precision in automated highway system,a novel state estimation algorithm based on multisensor data fusion is proposed. Firstly,a nonlinear system dynamic model was established for the vehicle motion state with discrete time and multiple models. By utilizing each sensor measurement data in current time and combining interacting multiple models (IMM) with extended kalman filter (EKF),the local state estimation value and error covariance m...

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Development of Virtual PLC Simulation Software Based on Visual C++

Hu Zhao-yong,He Han-wu,Qin Bing

Journal of Guangdong University of Technology. 2009, 26 (1): 17-.

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To realize PLC control without actual hard PLC,it developed a virtual platform used for PLC simulation,based on Visual C++. The ladder of PLC was constructed using the object-oriented method,and the instruction of PLC was transformed from the corresponding ladder with a binary tree. Finally,a virtual experiment of traffic bights at crossroads shows that the virtual PLC simulation software can be used for the training and experiment of PLC.

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Adaptive ECG Signal Compression Algorithm Based on Biorthogonal Wavelets

Zou Yu-hua,Luo De-han,Zhuang Jia-jun

Journal of Guangdong University of Technology. 2009, 26 (1): 18-.

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It proposes a novel ECG signal compression algorithm,based on biorthogonal wavelet Bior4.4 that can successivey partition the wavelet coefficients in the space frequency domain and encode them using adaptive decimal to binary conversion.This algorithm is tested with 8 different records from MIT-BIH arrhythmia database,an average percent root mean square difference as around 0.05 %~4.70 % for an average compression ratio of 1.5∶1 to 33∶1 obtained. Experimental results show that the proposed algor...

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Remote Liquid Level Monitoring Alarm System Based on GSM

Huang Xiao-Bo

Journal of Guangdong University of Technology. 2009, 26 (1): 19-.

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A remote liquid level monitoring alarm system based on GSM short message is introduced. A dual communication system between the monitoring centre and the remote Single-chip was by using two TC35 modules. Through GSM network combining Single-chip and serial port the system can monitor the remote Liquid Level and give and alarm.

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Permeability Measurement Equipment

Kang Ya-fen,Wang Ren-huang,Cai Jian-xin,Wang Rong-fang

Journal of Guangdong University of Technology. 2009, 26 (1): 20-.

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It introduces the national standard pressure test and designs permeability measurement equipment.It has provided the system’s interface,permeability testing process,the detection of pressure,temperature detection,and the design of the temperature control.Through the test of nitrogen gas,the data have been obtanined and the test curve of the experimental device has been displayed.