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Academy of Mathematics and Systems Science, CAS Colloquia & Seminars：Analytic smoothing effect of a class of ultra-parabolic equations
一类超抛物型方程 解析 光滑效应
2023/11/29
We study a class of ultra-parabolic equations, it is a high order degenerate parabolic operators of Hormander type, so it is strongly degenerate, but we prove that this class operators possesses the a...
Academy of Mathematics and Systems Science, CAS Colloquia & Seminars：Some boundary effect in Vlasov equations
弗拉索夫方程 边界效应 统计力学
2023/4/21
We discuss a stabilizing effect of boundary in the context of Vlasov equations: 1) linear Vlasov equation with the diffuse reflection boundary condition, 2) nonlinear Vlasov-Poisson equation with infl...
Academy of Mathematics and Systems Science, CAS Colloquia & Seminars：The Use of Machine Learning in Treatment Effect Estimation
机器学习 治疗效果 估计
2023/5/8
We present recent developments in double machine learning (DML) approach. The DML approach is concerned primarily with selecting the relevant control variables and functional forms necessary for the c...
Academy of Mathematics and Systems Science, CAS Colloquia & Seminars：The long wave approximation of the Green-Naghdi equations with the Coriolis effect
格林-纳格迪方程 长波近似 科里奥利效应
2023/5/8
This talk study the long wave asymptotic behavior of Green-Naghdi equations, which could be used to describe the propagation of long-crested shallow-water waves in the equatorial ocean regions with th...
2018 The 5th International Symposium on Mega Earthquake Induced Geo-disasters and Long-term Effect
2018 The 5th International Symposium Mega Earthquake Induced Geo-disasters and Long-term Effect
2017/11/27
Ten years ago, a devastating earthquake occurred in Sichuan Province, China, causing the death of almost 90 000 persons, widespread damage to urban and rural communities and the economy of the region....
Symposium MB7—Shear Transformation Mechanisms and Their Effect on Mechanical Behavior of Crystalline Materials
local stress fields local atomic configurations
2016/7/18
Shear transformations play an important role in accommodating plastic strain in some crystalline materials. Specifically, twinning in the case of HCP and TWIP, and martensitic transformations in the c...