最新刊期
      卷 15 ， 期 3 ， 1993
      • Xiao Weipin Dept.of Construction Management Engineering
        Vol. 15, Issue 3, (1993) DOI: 10.11835/j.issn.1674-4764.1993.03.001
        摘要：This paper disusses an important component part of the decision support sys- tem of science-technology management in building enterprises.It establishes the increasing degrees and dynamical productive fuctional model in building enterprises,and ayear contribultory models of investing labour and produtive fund,effect of profit-tax and productive total cost ect.  
          
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      • BAND DAMAGING CRACK MODEL OF CONCRETE

        Vol. 15, Issue 3, (1993) DOI: 10.11835/j.issn.1674-4764.1993.03.002
        摘要：This paper presents a fracture model of concrete,band damaging crack model (BDCM).The BDCM can be used to analyze mechanical behaviour of concrete effectively and easily.Compared with test results;numerical results calculated by the BDCM are very precise.  
          
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      • Liu Xiaoqing, Wu Huibi Dept.of Civil Engineering
        Vol. 15, Issue 3, (1993) DOI: 10.11835/j.issn.1674-4764.1993.03.004
          
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      • THE EVALUATING METHOD ABOUT LUMINOUS ENVIRONMENT IN BUILDINGS

        Chen Zhonglin, Xi Yucheng Dept.of Architecture
        Vol. 15, Issue 3, (1993) DOI: 10.11835/j.issn.1674-4764.1993.03.005
        摘要：This paper suggests that using best solar energy and advancing visual performance,a new evaluating method may be put that is about luminous environment.It not only recommends twelve parameters(targets),considering luminous environment and sky light climate but also luminary,heating,lowering temperature,psychology and physiology,ect.in accordance withyear's effect of daylighting.On the basis of different sky lighting climate areas and main uses of buildings.We use with a considerable weight factor that is satisfied with a basic function.Then by fuzzy multiple criterion,the distinct result about luminous environment in buildings is obtaoned.  
          
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      • EVALUATION METHOD OF MULTIFACTOR''''S SIMILAR ACTION

        Huang Hengdong Huazhong
        Vol. 15, Issue 3, (1993) DOI: 10.11835/j.issn.1674-4764.1993.03.007
        摘要：The management of the present building's firesafety is evaluated with one factor as the total building's loses of conflagation.It neglects the environmental factor.the mankind's productive activities,the factor of fire fighting management and the factor of remedial measure so that an evaluation of firesafety is made with different principles.In this paper,physical parameters show the idfferences in evaluation.Then a non-dimensional equivalent expression as objective function is obtained with the aid of dimensional method,which provides scientific bases for the evaluation of firesafety.  
          
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      • THE CHANGEABILITY OF 2~m ORDER TWOFOLD

        Zhang Changcai Dept.of Science Natural
        Vol. 15, Issue 3, (1993) DOI: 10.11835/j.issn.1674-4764.1993.03.008
        摘要：This paper presents the twofold magic square with a apparent characteristic.It can be changed into a series of new magic squares through changing the submatrix.  
          
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      • Zhang Zanxun, Wang Dongyun, Fu Linsen, Yao Jinshi Dept.of Civil Engineering
        Vol. 15, Issue 3, (1993) DOI: 10.11835/j.issn.1674-4764.1993.03.010
        摘要：An ancient grotto has been seriously weathered in Beishan,Dazu county.Sichuan province.This paper studies and discusses the hydrologic-geochemical reaction and weathered rock mass due to subsidence of acid rainwater and groundwater permeation.The researchingresults show that a main factor caused to destroy the shallow surface layer of rock is swelling of the sulphate crystal.  
          
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      • THE DEVELOPING STRATEGY FOR MOUNTAINIOUS TOWNS

        Luo Shushan Dept.of Architecture
        Vol. 15, Issue 3, (1993) DOI: 10.11835/j.issn.1674-4764.1993.03.011
        摘要：According to the significance of strategy concept study,the ecological environment should be protected.On the basis of the strategy of develoment and objective,this paper presents to build nests attracting anticipatorily and synchronously.  
          
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      • STUDY OF AIR LAYER FOR MOISTURE PREVENTION

        Vol. 15, Issue 3, (1993) DOI: 10.11835/j.issn.1674-4764.1993.03.012
        摘要：This paper studies and proves the function of air layer for moisture prevention based on the fundamental theories of heat and mass transfer in porous medium and in air layer and through contrastive model experiment. The result shows that the air infiltration will largely reduce the heat resistance of heat insulant.  
          
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      • THE CONSTRUCTION OF TWOFOLD MAGIC SQUARE OF ORDER n

        Zhou Yinliang Dept.of Natural Science
        Vol. 15, Issue 3, (1993) DOI: 10.11835/j.issn.1674-4764.1993.03.013
        摘要：This paper presents the sufficient condition for a square matrix of order n to the twofold magic square,with which the twofold magic square of order 64 is constructed.It is tested by the computer.  
          
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      • THE ANALYSIS OF A MANIPULATOR-CHECKWEIGHER

        Song Shouxiang Dept.of Mechanical and Electrical Engineering
        Vol. 15, Issue 3, (1993) DOI: 10.11835/j.issn.1674-4764.1993.03.015
          
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