最新刊期
      卷 10 ， 期 3 ， 1988

      • RELIABILITY OF STEEL BEAM-COLUMNS

        Xia Zhengzhong, Zhu Wen
        Vol. 10, Issue 3, (1988) DOI: 10.11835/j.issn.1674-4764.1988.03.001
          
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      • Quan Xueyou, Chen Wenqin, Qin Wenyue
        Vol. 10, Issue 3, (1988) DOI: 10.11835/j.issn.1674-4764.1988.03.002
        摘要：This paper presents the experimental results of 9 specimens.The mainobject of this experiment is to study the aseismatic behaiour of wide-shallowcoupling beams.Several variables that exert main influence on the behaviourare considered.Also,some aspects concerning the specific design are proposed.  
          
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      • THE PSYCHOLOGICAL NEEDS IN RESIDENTIAL ENVIRONMENT DESIGN

        Zhu Changlian
        Vol. 10, Issue 3, (1988) DOI: 10.11835/j.issn.1674-4764.1988.03.003
          
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      • AIR-CONDITIONING LOAD DYNAMIC ANALYSIS AND DESIGN LOAD

        Tian Shengyuan, Li Baizhan
        Vol. 10, Issue 3, (1988) DOI: 10.11835/j.issn.1674-4764.1988.03.004
          
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      • Du Jiaxin
        Vol. 10, Issue 3, (1988) DOI: 10.11835/j.issn.1674-4764.1988.03.005
        摘要：This paper introduces nullor,an ideal electronic part applied to I.O.A.and discusses the preordained condition with which nullor substitutes for I.O.A.equivalently.Then a criterion which can determine the work state of theoperation amplifier is offered.And a method using node admittance matrixto analyse transfer functions of networks with nullor is also introduced.  
          
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      • A REVIEW OF MODE-SUPERPOSITON MODELS IN EARTHQUAKE ENGINEERING

        Vol. 10, Issue 3, (1988) DOI: 10.11835/j.issn.1674-4764.1988.03.006
          
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      • ON FURTHER GENERALIZATION OF ROTAED VECTOR FIELDS

        Tian Guangquan
        Vol. 10, Issue 3, (1988) DOI: 10.11835/j.issn.1674-4764.1988.03.007
          
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      • A MATHEMATICAL MODEL OF FUZZY EVALUATION METHOD FOR ENVIRONMENTAL POLLUTION

        Gao Shixian
        Vol. 10, Issue 3, (1988) DOI: 10.11835/j.issn.1674-4764.1988.03.008
        摘要：The problem of fuzzy evaluation of environmental pollution is importantboth in environment science and in environmental protection.Usual evaluationmethods have their own characteristics.This paper puts forward a mathematicalmodel of fuzzy evaluation method in grades by means of systematic analysisfor environmental pollution.At the same time,it assigns weighted values byordering based on paired comparison.  
          
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      • ABCHITECTURE-A MARK OF THE TIMES

        Yu Zhuoqun
        Vol. 10, Issue 3, (1988) DOI: 10.11835/j.issn.1674-4764.1988.03.009
          
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      • Wang Qihui, Tong Mingchu
        Vol. 10, Issue 3, (1988) DOI: 10.11835/j.issn.1674-4764.1988.03.010
        摘要：Whether the cascade speed control system can be successfully used in cranernot is an mioportant research topic for electric machinery engineers in rec-ent years.This paper analyses many probleme involved in the cascade speedcontrol detail,iin ncluding the power transfer relationship,the mechanicalcharacteristics and its fitting with the load characteristics,the calculationsofahe cpacitancet and the parameters of the (?)ariable current device in thisspeed control system,and others.This paper laso gives the comparison be-cascade spee een tehtwd control and the rotor resistance control methods.  
          
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      • MATHEMATICAL PROOF OF OPTIMALITY OF THE MINIMUM ERROR METHOD IN NC

        Yuan Chaoting
        Vol. 10, Issue 3, (1988) DOI: 10.11835/j.issn.1674-4764.1988.03.011
        摘要：本文对最小误差法的最佳性作了数学证明.从证明中可以更深入地了解“最佳性”的含义.  
          
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      • Zhao Youshi, Yao Yulin
        Vol. 10, Issue 3, (1988) DOI: 10.11835/j.issn.1674-4764.1988.03.012
        摘要：本文提出了新型双层陶粒滤料池的研究成果.文中介绍了新型双层滤池的构造、设计参数和基本工作性能.  
          
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      • A PRACTICAL METHOD OF DESIGNING WALL BEAMS IN FRAMES

        Pan Lili, Peng Huiqin
        Vol. 10, Issue 3, (1988) DOI: 10.11835/j.issn.1674-4764.1988.03.013
        摘要：Brick masonry wall-beams in frames are girders,carrying brick masonrywalls in buildings with only one or two storied reinforced concrete frames atthe bottom of it.How to anaIyse and design such an element is an outstand-ing problem.In this case,there are no analytical and designing rules in thestate code in force.Therefore,designers have to seek other methods,in whichmost are very conservative and expensive.In order to change this case,thispaper provides an analytical and practical mathod for designers.  
          
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      • Jin Chaosong
        Vol. 10, Issue 3, (1988) DOI: 10.11835/j.issn.1674-4764.1988.03.014
        摘要：This paper presents a boundary element method for solving Dirichlet bou-ndary value problem of the Helmholtz equation in R~2.First,the existence andthe uniqueness of an extended solution for the problem are obtained.Then,thesolution is expressed in terms of simple layer potentials,and this expression,which is suitable to the interior as well as the exterior problem,leads to aboundary integral equation of the first kind.Finally,a finite element approachis applied to solve a variational form which is equivalent to the boundaryintegral equation.  
          
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