1996, 18(1):9-26. DOI: 10.11835/j.issn.1674-4764.1996.01.002
Abstract: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.
1996, 18(1):27-31. DOI: 10.11835/j.issn.1674-4764.1996.01.003
Abstract: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.
Liu Ming , Liu Boquan , Lai Ming
1996, 18(1):32-38. DOI: 10.11835/j.issn.1674-4764.1996.01.004
Abstract: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.
1996, 18(1):37-46. DOI: 10.11835/j.issn.1674-4764.1996.01.005
Abstract: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.
Liu Dong , Chen Shanlin Faculty of Civil Engineering
1996, 18(1):52-58. DOI: 10.11835/j.issn.1674-4764.1996.01.007
Abstract: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
Sun Xiaonan , Sun Xiaosong , Xu Kelin
1996, 18(1):66-70. DOI: 10.11835/j.issn.1674-4764.1996.01.009
Abstract: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.
1996, 18(1):71-75. DOI: 10.11835/j.issn.1674-4764.1996.01.010
Abstract: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.
Liu Yan , Fu Hongyuan , Wei Chuanzhong , Yang Yu , Li Jiangtao
1996, 18(1):76-84. DOI: 10.11835/j.issn.1674-4764.1996.01.011
Abstract: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.
1996, 18(1):85-89. DOI: 10.11835/j.issn.1674-4764.1996.01.012
Abstract: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.
1996, 18(1):90-95. DOI: 10.11835/j.issn.1674-4764.1996.01.013
Abstract: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.
1996, 18(1):96-99. DOI: 10.11835/j.issn.1674-4764.1996.01.014
Abstract:Quasi-vector variational inequality is proposed in this paper, Under certain conditions, existeuce of quasi-vector variational inequality with discontinuous mapping is obtained.
1996, 18(1):100-104. DOI: 10.11835/j.issn.1674-4764.1996.01.015
Abstract: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.
1996, 18(1):110-113. DOI: 10.11835/j.issn.1674-4764.1996.01.017
Abstract:This paper introduced computational basis and examples of generalized integrals using differential operator series method.
You are the visitor
ContactAddress:重庆市沙坪坝区沙正街174号,重庆大学A区
Postcode:400045 Fax:
ServiceTel:023-65111322 E-mail:xuebao@cqu.edu.cn
Copyright: ® 2024 All Rights Reserved