最新刊期

    18 1 1996
    • QUALITY CHECK AND OPTIMAZED DESIGN FOR THERMAL PERFORMANCE OF COLD STORAGES

      Chen Qigao
      Vol. 18, Issue 1, Pages: 9-26(1996) DOI: 10.11835/j.issn.1674-4764.1996.01.002
      摘要:This paper studys the appraisal of thermal performance quality of cold storage. Analyses therom-moist perfomance of envelopes of cold storage and cheCks them with the measured data tested in site for seven cold storages, presents a optimum construction proogramme for fruit cold storage.  
        
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    • THE ARC-LENGTH METHOD OF SECANT RIGIDITY IN FRAME ANALYSIS

      Wang Yongyue
      Vol. 18, Issue 1, Pages: 27-31(1996) DOI: 10.11835/j.issn.1674-4764.1996.01.003
      摘要:The secant rigidity is used for the are-length method to solve the nonlinear finite elements problems. The advantage of this method is unnecessary of calculating the initial resistance term caused by the incremental step. The computational work is less and the programing is easier as compared with initial are-length method. This method can be widely used to solve nonlinear problems.  
        
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    • Vol. 18, Issue 1, Pages: 32-38(1996) DOI: 10.11835/j.issn.1674-4764.1996.01.004
      摘要:In this paper, through the theoretical analysis and a number of calclating, the statistic regression about the parameters in the failure criteria for aseismic structures presented by the authors are made. Based on this work, a simplified method for preventing collapse of multistory buildings taking account of structural low-cycle fatigue character is proposed.  
        
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    • THE BUSINESS PLAN DECISION MODELS IN THE BUILDING ENTERPRISES

      Xiao Weipin
      Vol. 18, Issue 1, Pages: 37-46(1996) DOI: 10.11835/j.issn.1674-4764.1996.01.005
      摘要:This paper discusses an important part of"The Decision Support System of Science Technology Management in Building Enterprises". It established the synthetical target system of business plan in the building enterprises, business effect prediction models, business plan decision models and their algorithm, business plan target system etc.  
        
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    • SNAP-BUCKLING OF THIN SHALLOW CONICAL SHELLS UNDER LINE LOADS

      Vol. 18, Issue 1, Pages: 52-58(1996) DOI: 10.11835/j.issn.1674-4764.1996.01.007
      摘要:A theoretical analysis is presented for the snap-buckling behavior of thin shallow conical shells under axisymmetric line loads. By making use of the integral equation method and the modified iteration method, the second approximate formulas of elastic behavior are given. The effects of geometrical parameters and boundary conditions on the snap-buckling behavior are discussed  
        
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    • THE NEURAL NETWORK CONROL TECHNOLOGY USED IN HYDRAULIC LOGIC VALVE SYSTEM

      Vol. 18, Issue 1, Pages: 66-70(1996) DOI: 10.11835/j.issn.1674-4764.1996.01.009
      摘要:This paper is concerned with artifical neural network used in hydrauic logic valve control technique, the characters and structure of hydraulic logic valve, the main characters and topological construction of artifical neural network are analyzed in detail. The pre-feedback used in logic valve. is focused, the training method was derived and improved. Using this improved BP training method, the net work was trained and satisfactory experiment results were gained.  
        
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    • SCALAR LOCALLY UNIQUE SOLUTIONS OF VECTOR VARIATIONAL INEQUALITY

      Li Sheng jie
      Vol. 18, Issue 1, Pages: 71-75(1996) DOI: 10.11835/j.issn.1674-4764.1996.01.010
      摘要:This paper first deds with the relations of solutions of vector variational inequality and vector optimization problem. Then, K-T Necessary and sufficient conditions are proved. Finally, scalar locally unique solution is introduced. Under certain conditions,the exitence of scalar locally unique solution of vector variational inequality is proved.  
        
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    • A MODLE OF SYSTEM DYNAMIC FOR URBAN LAND PLANNING

      Vol. 18, Issue 1, Pages: 76-84(1996) DOI: 10.11835/j.issn.1674-4764.1996.01.011
      摘要:This thesis uses the theory and method of the system dynamics to analyze the characteristics of the urban land planning system and set up the urban land planning system dynamic model, The model could describe the influence and request of factors of the society. economy and environment to the urban planning by using the system, the quantitative and the dynamic methods. By adjusting the parameter and repeating model imitation, the model could provide the possibility of realizing the present land planning and provide the quantitative analysis method for the planning department to make or adjust the land planning, and assist the government department to make decisions.  
        
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    • Zheng Xiaoqing
      Vol. 18, Issue 1, Pages: 85-89(1996) DOI: 10.11835/j.issn.1674-4764.1996.01.012
      摘要:To counteract the weakness of Net Present Value, a new index, the utility sum of accumulated net-cash-flow present value, is put forward in this paper.  
        
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    • FUZZY OPTIMAL MODEL OF ROCK CLASSIFICATION

      Zhang Jianhua
      Vol. 18, Issue 1, Pages: 90-95(1996) DOI: 10.11835/j.issn.1674-4764.1996.01.013
      摘要:This paper proposed a fuzzy optimal model of rock classification, according to a number of controlling factors of rock classification. Satisfactory results are obtained by applying the model to the real rock mass classification.  
        
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    • EXISTENCE OF QUASI-VECTOR VARIATIONAL INEQUALITY

      Li Shengjie
      Vol. 18, Issue 1, Pages: 96-99(1996) DOI: 10.11835/j.issn.1674-4764.1996.01.014
      摘要:Quasi-vector variational inequality is proposed in this paper, Under certain conditions, existeuce of quasi-vector variational inequality with discontinuous mapping is obtained.  
        
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    • THE THERMAL CRACK IN MASONRY STRUCTURE AND ITS CONTROL DESIGNING

      Vol. 18, Issue 1, Pages: 100-104(1996) DOI: 10.11835/j.issn.1674-4764.1996.01.015
      摘要:The horizontal, vertical or oblique thermal cracks widely present in a masonry structure are summarized in this paper. The reasons for these cracks are analyzed.On basis of these causes, different methods called" readjusting", "releasing" and "resisting" for short, can be taken respectively in structure design to eliminate the cracks.  
        
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    • Ke Honglu
      Vol. 18, Issue 1, Pages: 110-113(1996) DOI: 10.11835/j.issn.1674-4764.1996.01.017
      摘要:This paper introduced computational basis and examples of generalized integrals using differential operator series method.  
        
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