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Digital Urban Planning Strategies and Practice

2006年中国机械工程学会年会暨中国工程院机械与运载工...

作者： ge junjie department.of design, guilin university of electronic technology, 541004

The product design already prepared is paid attention, whether took to design and the psychology research already becomes the product design the important part. This article from to the consumer psych

关键词： Product design psychology value.

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Digital Urban Planning Strategies and Practice

Study on Solder Joint Reliability of Plastic Ball Grid Array Component Based on SMT Products Virtual Assembly technology

第十三届中国科协年会第6分会场-绿色经济与沿海城市可持续发展战略研讨会

作者： ge junjie(department.of design,guilin university of electronic technology,guilin 541004,china)

Digital urban planning represents a new planning concepts and methods, with a new planning concepts, planning content and planning methods. This article related to urban planning from the digital concept, digital urban planning explained the basic content and basic characteristics, and summarizes our strategy of digital urban planning practice.

关键词： city system engineering digital city digital planning digital urban planning practice strategy

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武汉理工大学学报 2006年第S1期28卷 214-219页

作者： HUANG Chunyue,WU Zhaohua,ZHOU Dejian (department.of electronic Machinery and Transportation Engineering,guilin university of electronic technology,guilin 541004,china) department.of electronic Machinery and Transportation Engineering Guilin University of Electronic TechnologyGuilin 541004China

Based on surface mount products virtual assembly technology,the solder joint reliability of plastic ball grid array (PBGA) was studied. Four process parameters,including the upper pad diameter,the stencil thickness,the chip weight on a single solder joint and the lower pad diameter were chose as four control factors. By using an L25(56) orthogonal array the PBGA solder joints which have 25 different process parameters’ levels combinations were designed. The numerical models of all the 25 PBGA solder joints were developed and the finite element analysis models were setup. The stress and strain distribution within the PBGA solder joints under thermal cycles were studied by finite element analysis,and the thermal fatigue life of PBGA solder joint was calculated using Coffin-Manson equation. Based on the calculated thermal fatigue life results,the range analysis was performed. The results of study show that that the impact sequence of the four factors from high to low on the fatigue life of PBGA solder joints are the stencil thickness,the upper pad diameter,the lower pad diameter and the chip weight on a single solder joint; the best level combination ofprocess parameters that results in the longest fatigue life is the lower pad diameter of 0.6 mm,the stencil thickness of 0.175 mm,the chip weight on asingle solder joint of 28×10 -5 N and the upper pad diameter of 0.5 mm.

关键词： virtual assembly plastic ball grid array process parameters range analysis

TWO-SCALE FINITE ELEMENT GREEN'S FUNCTION APPROXIMATIONS WITH APPLICATIONS TO ELECTROSTATIC POTENTIAL COMPUTATION

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Journal of Systems Science & Complexity 2010年第1期23卷 177-193页

作者： Ying YANG Aihui ZHOU department.of Computational Science and Mathematics Guilin University of Electronic Technology Guilin 541004 China. The State Key Laboratory of Scientific and Engineering Computing Institute of Computational Mathematics and Scientific/Engineering Computing Academy of Mathematics and Systems Science Chinese Academy of Sciences Beijing 100190 China.

In this paper,a two-scale finite element approach is proposed and analyzed for approximationsof Green's function in *** approach is based on a two-scale finite elementspace defined,respectively,on the whole domain with size H and on some subdomain containing singularpoints with size h (h << H).It is shown that this two-scale discretization approach is very *** particular,the two-scale discretization approach is applied to solve Poisson-Boltzmann equationssuccessfully.

关键词： Error analysis finite element Green's function Poisson-Boltzmann equation two-scale.

Linguistic Cultural Signs in College English Teaching

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广西师范大学学报（哲学社会科学版） 2002年第S2期38卷 150-154页

作者： TANG Hong (Foreign Languages department,guilin university of electronic technology, guilin 541004, china)

This paper explores the relationship of language and culture in College English teaching, taking further discussion about the current linguistic cultural issues. Therefore, English culture should be introduced in college English teaching to help students better understand the English language as well as the English society. Due to the close relationship between culture and language and the great difference between Chinese and English

关键词： linguistic cultural signs college English teaching

Chinese and Americans-an Intercultural Comparison

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广西师范大学学报（哲学社会科学版） 2002年第S2期38卷 146-149页

作者： MA Xia (Foreign Languages department, guilin university of electronic technology, guilin 541004,china)

This year, I got an opportunity to teach Chinese Culture to some American students for three months. During this process, I had observed many cultural differences between Chinese and Americans. And how to understand the definition of culture was quite far away between us. But one point we all agreed upon was that immersion in the culture of another country can lead to increased appreciation for one’s own.

关键词： Chinese Americans comparison

Effect of Dy on Structure and Magnetic Properties of Dy_xFe_(60.5-x)Pt_(39.5) Alloys

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Journal of Wuhan university of technology(Materials Science) 2010年第1期25卷 135-137页

作者：左卫群 department.of Information of Materials Science and Engineering Guilin University of Electronic Technology

Effects of the content of Dy on structure and magnetic properties of DyxFe60.5-xPt39.5 alloys（x = 0, 0.5, 1.0, 1.5） were investigated. The results of XRD analysis proved that the phase-transitional temperature of DyxFe60.5-xPt39.5 alloys from disordered face-centered-cubic structure to ordered face-centered-tetragonal cubic structure decreases with the increase of the content of Dy（x）. Suitable content of Dy can improve the exchange coupling between soft magnetic phase and hard magnetic phase by refining grain size, while the remanence ratio and coercivity of the Fe60.5Pt39.5 alloy can be significantly improved by a small replacement of Fe by Dy, good magnetic properties were obtained in Dy0.5Fe60.0Pt39.5 alloys.

关键词： phase transformation degree of order grain size exchange coupling

Epidemic dynamics on complex networks

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Progress in Natural Science:Materials International 2006年第5期16卷 452-457页

作者： ZHOU Tao , FU Zhongqian, and WANG Binghong (department.of electronic Science and technology, university of Science and technology of china, Hefei 230026, china department.of Modern Physics, university of Science and technology of china, Hefei 230026, china) department.of electronic Science and technology University of Science and Technology of China Hefei 230026 China department.of Modern Physics University of Science and Technology of China Hefei 230026 China

Recently, motivated by the pioneer work in revealing the small-world effect and scale-free property of various real-life networks, many scientists devote themselves to studying complex networks. One of the ultimate goals is to understand how the topological structures affect the dynamics upon networks. In this paper, we give a brief review on the studies of epidemic dynamics on complex networks, including the description of classical epidemic models, the epidemic spread on small-world and scale-free networks, and network immunization. Finally, perspectives and some interesting problems are proposed.

关键词： epidemic dynamics complex networks critical value immunization small-world effect scale-free property.

Modelling Accelerating Growth with Intermittent Processes in Evolving Networks

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Communications in Theoretical Physics 2007年第12期48卷 1119-1122页

作者： YUAN Wu-Jie~(1,2)and LUO Xiao-Shu~1~1 College of Physics and electronic Engineering,Guangxi Normal university,guilin 541004,china~2 department.of Physics,Huaibei Coal Industry Teachers College,Huaibei 235000,china College of Physics and electronic Engineering Guangxi Normal University Guilin 541004 China department.of Physics Huaibei Coal Industry Teachers College Huaibei 235000 China

In this paper,the acceleratingly growing network model with intermittent processes is *** thegrowing network,there exist both accelerating and intermittent *** network is grown from the number ofnodes mo and the number of links added with each new node is a nonlinearly increasing function m+aNβ（t）f（t）,whereN（t） is the number of nodes present at time t.f（t） is the periodic and bistable function with period T,whose values are1 and 0 indicating accelerating and intermittent processes,*** we denote the ratio r of acceleration timeto whole *** study the degree distribution p（k） of the model,focusing on the dependence of p（k） on the networkparameters τ,T,m,α,N,and β.It is found that there exists a phase transition point,kc such that if kc,then p（k）obeys a power-law distribution with exponent -γ1,while if k>kc,then p（k） exhibits a power-law distribution withexponent-γ2.Moreover,the exponents γ1 and γ2 are independent of τ,T,m,a,and N,while they depend only onthe parameter β.More interesting,the phase transition point is described by kc=aNβ,which is equal to the value atwhich p（k） is maximum in GM model.

关键词： acceleratingly growing network intermittent process power-law distribution