报告题目: An iterative algorithm to simulate nonstationary and non-Gaussian processes, vector of processes, and fields
报 告 人：Hanping Hong，加拿大西安大略大学土木与环境系教授墨西哥工程院院士
主 持 人：陈建兵教授，彭勇波教授
时 间：2021年12月15日（星期三）9:00 - 10:30 A.M.
In this presentation, we present a new iterative power and amplitude correction (IPAC) algorithm to simulate the nonstationary and non-Gaussian process, vector of processes, and fields. The proposed algorithm is rooted in the concept of defining the power distribution of the stochastic process in the transform domain of a selected transform pair and relies on the forward and backward transforms of the selected transform. The IPAC algorithm can be used with different popular transforms, such as the Fourier transform, S-transform, discrete orthonormal wavelet transform, and continuous wavelet transforms. The targets for the simulation are the marginal probability distribution function of the process (or field) and the power distribution of the process that is defined in the transform domain for the adopted transform. The algorithm is versatile and efficient. It can be used to simulate Gaussian or non-Gaussian processes or fields with the same ease; it can also be used to generate surrogates as well.
Dr. Hong is a professor in the Department of Civil and Environmental Engineering at the University of Western Ontario. Before joining the department in 1996, he worked more than six years as a research scientist in the oil and gas industry, concentrated on the optimum maintenance strategies of oil and gas pipelines under corrosion. Dr. Hong has expertise in the areas of application of probabilistic analysis, reliability and risk assessment, natural hazard modeling, and design code calibration. He has contributed to the reliability-based and economically efficient structural design code development and infrastructure retrofit. He is actively participating in several design codification and standard committees, including the National Building Code of Canada and the Canadian Highway Bridge Design Code.
He is a prolific researcher and authored/co-authored more than 200 peer-reviewed journal papers. He received several awards and prizes for his research contributions. He is a member of The Mexican Academy of Engineering and a fellow of the Canadian Society of Civil Engineering.