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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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Worldwide Patent Analysis on LED Lighting Technology

Wen Shang-sheng1, Zhang Jian-ping1, Wen Fei2, Mo Wen-zhen3

Journal of Guangdong University of Technology. 2009, 26 (4): 1-7.

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DWPI patent database of THOMSON group was chosen,literature on LED lighting technology patents between January 1 1965 to December 31 2008 was collected,and the associated patent database was established.Derwent innovation Index patent analysis system was chosen.These LED lighting technology patents were analyzed deeply from the total amount of patent applications,and key LED patents and key patent holders were analyzed respectively. The present patent status at home and abroad were compared.The patent ...

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Hypoenengetic Trees

Zhang Qing-hua

Journal of Guangdong University of Technology. 2009, 26 (4): 7-10.

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Let G be a graph on n vertexs and letλ1,λ2,…,λn be its eigenvalues.The energy E（G） of a graph G is defined as the sum of absolute value of all eigenvalues.An n-vertex graph G is said to be hypoenergetic if E（G） is less than n.Gutman said that there exist exactly four n-vertex trees with maximum vertex degreeΔ≤3 with energy less than n by a systematic computer:S1,T3.4.1,T4.4.1,T7.4.1 for n≤22.It proves this conclusion in...

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The Solution to the Sylvester Matrix Rank Equation

Qiu Hong-bing

Journal of Guangdong University of Technology. 2009, 26 (4): 11-13.

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With the matrix rank decomposition,necessary and sufficient conditions are given for the Sylvester matrix rank equation to have solutions under the constraint conditions of rank,and the general solution to the Sylvester matrix rank equation is obtained.

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On Anti-periodic Solutions to Second Order Impulsive Differential Equations

Zhou Shao-long

Journal of Guangdong University of Technology. 2009, 26 (4): 14-17.

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It discusses the existence problems with anti-periodic solutions to second order impulsive differential equations in Hilbert space.

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Number of Perfect Matchings of Claw-free Cubic Graphs without K₄-e as Its Induced Subgraphs

Yang Chun-xia

Journal of Guangdong University of Technology. 2009, 26 (4): 18-21.

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Let G be a simple graph with vertex set V（G） and edge set E（G）.A graph G is said to be claw-free if G does not contain any induced subgraph isomorphic to K1,3.A cubic graph is a graph,each vertex of which has degree three.The perfect matching number of claw-free cubic graphs without K4-e as its induced subgraphs is characterized.

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The Laplacian Estrada Index of Iterated Line Graphs of Regular Graphs

Xu Xiao-wei,Guo Da-chang

Journal of Guangdong University of Technology. 2009, 26 (4): 22-24.

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According to the definition of the Laplacian Estrada index and the properties of iterated line graphs of regular graphs,it deduces expressions for the Laplacian Estrada index of iterated line graphs of regular graphs.

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Decentralized Robust Stabilization for a Class of Uncertain Large-Scale Time-Delay Systems with Bounded Persistant Disturbances

Zeng Ai-hua,Jin Chao-yong,Ren Jian-gong

Journal of Guangdong University of Technology. 2009, 26 (4): 25-29.

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The problem with the decentralized robust stabilization of a class of uncertain large-scale time-delay systems with bounded persistant disturbances is researched.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 asymptotically ...

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Magnetic Field-controlled Transmission of Aqueous Fe₃O₄ Ferrofluids

Zhao Wei-ren~1,Sun Chang-jun~2,Zhang Wei~1,Yu Jun~1

Journal of Guangdong University of Technology. 2009, 26 (4): 30-33.

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The transmission of light in the aqueous ferrofluid films of Fe₃O₄ in slowly-changing magnetic fields was investigated.The results show that the evolution of transmission with the increase of magnetic fields can be divided into three（for small thickness of the film） or four（for larger thickness of the film） characteristic stages.Film thickness will cause differences in the evolution of the transmission under high magnetic fields.The concentration of magnetic fluids does not...

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Synthesis and Luminescent Properties of Ce³⁺,Mn²⁺Doped Sr₂SiO₄ Phosphors

Yu Jun,Zhao Wei-ren,Zhang Wei,Song En-hai,Zhou Guo-xiong

Journal of Guangdong University of Technology. 2009, 26 (4): 34-36.

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In the air,the Sr₂SiO₄:Ce³⁺,Mn²⁺ phosphors were prepared in a sol-gel process.The X-ray diffraction image shows that the samples synthesized at 900℃were pure Sr₂SiO₄..The temperature was lower than that to do it by solid state reaction method.Excited by a radiation of 265 nm,the phosphors emit a strong blue-white fluorescence, and its emission spectrum shows a broad band with an unsymmetrical peak at 470 nm.Also the concentration o...

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A Tentative Study of the Heat Storage Properties of Al-Si Alloy

Li Hui-peng,Zhang Ren-yuan,Mao ling-bo,Liu Zong-jian

Journal of Guangdong University of Technology. 2009, 26 (4): 37-41.

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It uses the schematic graph of thermal cycles’ test setting and reseaches the changes in thermal properties of Al-Si alloy under different thermal cycles.The results show that the phase temperature of Al-Si alloy increases from 579℃to 584℃,and the latent heat decreases from 537 J/g to 500.6 J/g after 1 600 thermal cycles’ test setting.Al-Si alloy as phase change storage materials has a excellent reliability of thermal cycles in the long tem,so it can be used for depositing heat of the solar ther...

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Research on the High Temperature Corrosion of the Heat Exchange Tube of Thermal Storage

Chen Xiao,Mao Ling-bo,Chen Zhi-peng,Mo De-xi,Li Cheng-yue

Journal of Guangdong University of Technology. 2009, 26 (4): 42-44.

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Al-12.07%Si eutectic alloy has strong corrosive effect at high temperatures.310S stainless steel and 20G steel heat-exchange tubes are coated by graphite to isolate Al-Si alloy.Graphite with good corrosion-resistant effect will protect the heat-exchange tubes from corrosion by molten Al-Si alloy.

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Energy-saving Technology for Air Conditioning System in Communication Rooms

Deng Chen-mian,Qin Hong

Journal of Guangdong University of Technology. 2009, 26 (4): 45-49.

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Some energy-saving technology applied to air conditioning in the communication rooms is introduced.To main problems existing in some energy-saving methods,the corresponding solutions are stated.A comparative analysis of the advantages and disadvantages of the main energy-saving methods is done,and the selection criteria and applicable locations of the energy-saving methods are analyzed as well.

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The Application of Improved Election Campaign Algorithm in Solving Equations

Xie Qing-hua,L(u|¨) Wen-ge,Liu Zhi-yong,Liu Da-lui,Guo Chun-rong

Journal of Guangdong University of Technology. 2009, 26 (4): 50-53.

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The improved Election Campaign Algorithm is used to solve equation and quickly find out real or virtual roots at the same time.The results show that the Election Campaign Algorithm is efficacious in solving equations.

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An Automatic Software System Designed for Detecting the Format of Dissertations

Xu Hai-yang,Li Qing,Tang Ping,Gao Ming-qin

Journal of Guangdong University of Technology. 2009, 26 (4): 50-57.

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It focuses on an automatic software system designed for detecting the format of dissertation with Visual C ++ 6.0,which is based on OLE and COM techniques.With the Secondary Development of the powerful capacity in word processing of Microsoft Word,the functions of this system include importing Word documents,offering customizable templates defining the format of the desired dissertations,detecting the format of the documents according to the templates and saving the error report.It also proposes...

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Research on Semantic-driven Portlets Interoperation

Li Cheng-xiao~1,Li Wei-hua~1,Zhou Qing-yun~2

Journal of Guangdong University of Technology. 2009, 26 (4): 58-61.

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The existing Portlet interoperation methods having insufficiency in sharing scope and being compatible with,in addition to having difficulty in integrating the application system of Portlet dynamically,it tries to establish a semantic-driven Portlet interoperation model,researches several key technologies of semantic Portlet interoperation, and provides an algorithm implementing example.All the research meets the application integration demand for developing national electric-net company"SG186"e...

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Face Recognition Based on Kernel Fisher Discriminant Analysis under Exponential Decay

Huang Cheng,Wang Fu-long,Liu Xiao-liang

Journal of Guangdong University of Technology. 2009, 26 (4): 62-64.

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Discrete wavelet transformation was firstly used to eliminate the information which was not related to the identification in order to improve the recognition rate and effectively reduce the time complexity.To inhibit the effects of light,a strategy to pre-process the attenaution image was introduced.The experimental results,based on Yale database face,show that the combination of the above methods to deal with the KFDA has a better performance than traditional KFDA and the current zero KFDA.

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The Application of a Weighted Kernel Fisher Discriminant Analysis Applied in Face Recognition

Liu Xiao-liang,Wang Fu-long,Huang Cheng,Zeng Ai-hua

Journal of Guangdong University of Technology. 2009, 26 (4): 65-69.

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A weighted kernel maximum scatter difference discriminating criterion is developed for extraction of nonlinear features.The proposed method can be used to extract nonlinear features for faces effectively anf to reconstruct between-class scatter matrix and within-class scatter matrix by weighted schemes.Therefore,it can modify the kernel maximum scatter difference discriminating criterions.Experiments performed on ORL and Yale face database verify the effectiveness of the proposed method.

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Measurement and Analysis of Thermal Environment in Foshan Donghuali Dwellings

Zeng Zhi-hui~1,Lu Qi~1,Guo Peng-fei~2

Journal of Guangdong University of Technology. 2009, 26 (4): 70-74.

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The measurement and analysis of thermal environment of Qing Dynasty traditional dwellings in Foshan Donghuali reveals the effectiveness of"natural air-conditioners"in Lingnan traditional dwellings.It is brought forward that street distribution,courtyards,high halls and ventilating screens are effective approaches for people to accommodate themselves to the hot-wet climate in Lingnan region on condition that no active energy sources assist. This can be used as reference for the design of energy c...

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Selection Evaluation of Goods Providers on the Basis of Analytical Hierarchical Process

Yang Wan-sheng,Mei Sheng

Journal of Guangdong University of Technology. 2009, 26 (4): 75-77.

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The selection of materials and equipment providers is analyzed and evaluated by using the theory of AHP.On the basis of building evaluating indexes for provider selection,the power factors of evaluating indexes are calculated in detail,and some basic controlling indexes of selecting providers are set up.All these research results can supply reliable and quantificational selecting standards for goods providers,thus benefiting project management.

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Research on Mapping from OWL Ontology to Complex-Elements

Liu Zong-mei,Li Wei-hua,Tan Jian-xin

Journal of Guangdong University of Technology. 2009, 26 (4): 78-83.

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OWL is W3C’s recommended language,used as the description language on ontology.It is very important in semantic Web.Used for the basic formal description of complex questions,complex-elements of Extenics are important to solving contradiction problems.Through analyzing the elements of OWL and the concept of complex-elements, it proposes the mapping approach from OWL Ontology to complex-elements.

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The Method to Construct Multivariate and Multidimensional Basic-element and Extensible Set with High Order and Multivariates and Multidimensions

Li Qiao-xing~(1,2,3,4)

Journal of Guangdong University of Technology. 2009, 26 (4): 84-87.

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In order to simutaneously convey some research objectives,it proposes the definitions of multivariate and multidimensional basic-elements and the extensible set with high order and multivariate and multidimensions on the basis of the relative results.These results can enrich the contents of basic-element theory and extension set theory, and unifiy the definitions of extensible set,and enlarge the applied fields that basic-elements describe.

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Research into the Relation-element and Matter-element Based on Orthogonal List Storage

Zou Tong-hao,Li Wei-hua

Journal of Guangdong University of Technology. 2009, 26 (4): 88-92.

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It discusses the relation-element and matter-elelment’ s storage in computer by orthogonal list storage based on graphs.Relation-element’ s extension was transformed into research on graphs.According to the graphs’ characteristics the intricate contradiction problems were found out and solved.By combining AOE net operations,it figures out the key path to sovle contradiction problems.

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The Research on Orthogonal Software Architecture in Self-help Travel Strategy Generating System

Li Jian-xin,Li Wei-hua,Shao Song-hua

Journal of Guangdong University of Technology. 2009, 26 (4): 93-.

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After analyzing the software architecture of a self-help travel strategy generating system,it is found that there are some drawbacks in this system,which cause it to runn slowly and make it difficult to maintain and expand functions.It suggests that the self-help travel strategy generating system use orthogonal software architecture.Based on the traditional orthogonal software architecture,a common shared data component layer is added to improve the performance of the system.The experimental res...

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