The damage identification is made by the numerical simulation analysis of a five-storey-and-two-span RC frame structure, using improved and unimproved direct analytical method respectively; and the fundamental equatio...The damage identification is made by the numerical simulation analysis of a five-storey-and-two-span RC frame structure, using improved and unimproved direct analytical method respectively; and the fundamental equations were solved by the minimal least square method （viz. general inverse method）. It demonstrates that the feasibility and the accuracy of the present approach were impoved significantly, compared with the result of unimproved damage identification.展开更多
A transcendental polynomial which has all its roots lying in the left half plane is called stable. In this paper, the stability of transcendental polynomials which are nearly as general as those discussed by L. S. Po...A transcendental polynomial which has all its roots lying in the left half plane is called stable. In this paper, the stability of transcendental polynomials which are nearly as general as those discussed by L. S. Pontryagin are investigated through direct analytic method.For application of the method presented in this paper, the asymptotic stability of some differential-difference equations is investigated.展开更多
文摘The damage identification is made by the numerical simulation analysis of a five-storey-and-two-span RC frame structure, using improved and unimproved direct analytical method respectively; and the fundamental equations were solved by the minimal least square method （viz. general inverse method）. It demonstrates that the feasibility and the accuracy of the present approach were impoved significantly, compared with the result of unimproved damage identification.
文摘A transcendental polynomial which has all its roots lying in the left half plane is called stable. In this paper, the stability of transcendental polynomials which are nearly as general as those discussed by L. S. Pontryagin are investigated through direct analytic method.For application of the method presented in this paper, the asymptotic stability of some differential-difference equations is investigated.
