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Academy of Mathematics and Systems Science, CAS Colloquia & Seminars：Hidden structures behinds the compressible Navier-Stokes equations and its applications to the corresponding models
可压缩 纳维-斯托克斯方程 隐藏结构 相应模型应用
2023/5/6
In this talk, we will review the past developments on the solutions of the compressible Navier-Stokes equations and reveal the three hidden structures which linked the weak solution to the strong one....
Bias Reduction for Dynamic Nonlinear Panel Models with Fixed Effects
Fixed Eff ects Dynamic Nonlinear Panel Models
2015/9/22
The fixed effects estimator of panel models can be severely biased because of well-known incidental parameter
problems. It is shown that this bias can be reduced as T grows with n. We con...
Two models for the parametric forcing of a nonlinear oscillator
Parametric excitation Resonance Chaos Elliptic averaging
2015/8/27
Instabilities associated with 2:1 and 4:1 res-onances of two models for the parametric forcing of a strictly nonlinear oscillator are analyzed. The first model involves a nonlinear Mathieu equation an...
Nonlinear Models of Neural and Genetic Network Dynamics:Natural Transformations of Łukasiewicz Logic LM-Algebras in a Łukasiewicz-Topos as Representations of Neural Network Development and Neoplastic Transformations
neural network development morphogenesis neoplastic transformations LM-logic algebra categories
2015/7/21
A categorical and Łukasiewicz-Topos framework for Algebraic Logic models of nonlinear dynamics in complex functional systems such as Neural Networks, Cell Genome and Interactome Networks is intro...
Mechanical models of fracture reactivation and slip on bedding surfaces during folding of the asymmetric anticline at Sheep Mountain,Wyoming
Fold Fracture reactivation Bed parallel slip FEM modeling Frictional contact Sheep Mountain,Wyoming
2015/7/1
We use finite element methods to investigate the reactivation of fractures (opening and shearing) and the development of bedding-surface slip during the deformation of the asymmetric anticline at Shee...
Quantifying sensitivity of local site response models to statistical variations in soil properties
Local site response Sensitivity analysis Statistical variation Stochastic analysis
2015/7/1
We perform a combined stochastic-deterministic analysis of local site response using two computer codes, an equivalent linear analysis program SHAKE and a fully nonlinear finite element code SPECTRA. ...
On the numerical integration of three-invariant elastoplastic constitutive models
the numerical integration three-invariant elastoplastic constitutive models
2015/7/1
We investigate the performance of a numerical algorithm for the integration of isotropically hardening three-invariant elastoplastic constitutive models with convex yield surfaces. The algorithm is ba...
International Workshop on PDEs in Fluid Dynamics and Related Models
Fluid Dynamics；Related Models
2014/11/3
This international workshop is aimed at bringing together junior researchers to present their recent research results, to exchange new ideas and to discuss challenging issues, in partial differential ...
Longitudinal and transverse velocity scaling exponents from merging of the Vortex filament and Multifractal models
Longitudinal and transverse velocity scaling exponents merging of the Vortex filament Multifractal models Fluid Dynamics
2012/4/20
We suggest a simple explanation of the difference between transverse and longitudinal scaling exponents observed in experiments and simulations. Based on the Vortex filament model and Multifractal con...
Autonomous models solvable through the full interval method
reaction-diffusion full interval method solvable
2012/2/27
The most general exclusion single species one dimensional reaction-diffusion models with nearest-neighbor interactions which are both autonomous and can be solved exactly through full interval method ...
Ion Binding Sites and their Representations by Quasichemical Reduced Models
Ion Binding Sites Representations Quasichemical Reduced Models
2012/2/27
The binding of small metal ions to complex macromolecular structures is typically dominated by strong local interactions of the ion with its nearest ligands. For this reason, it is often possible to u...
Dynamic Critical Behavior in Models of Ferromagnetic Gadolinium
Dynamic Critical Behavior Models Ferromagnetic Gadolinium
2012/2/27
A numerical technique combining Monte Carlo and molecular dynamics simulations is used for the first time to examine the complex critical dynamics of models of ferromagnetic gadolinium in which both s...
Vibration of quadrilateral embedded multilayered graphene sheets based on nonlocal continuum models using the Galerkin method
Small scale Free vibration Quadrilateral multilayered graphene sheet Polymer matrix Nonlocal elasticity theory
2012/2/28
Free vibration analysis of quadrilateral multilayered graphene sheets (MLGS) embedded in polymer matrix is carried out employing nonlocal continuum mechanics.The principle of virtual work is employed ...
Diel heat transport within the hyporheic zone of a pool-riffle-pool sequence of a losing stream and evaluation of models for fluid flux estimation using heat
Diel heat transport hyporheic zone pool-riffle-pool sequence losing stream evaluation of models fluid flux estimation heat
2014/4/17
Hyporheic water is thought to infiltrate at the head of a riffle, which in turn is complemented by upwelling back to the stream at the tail of the riffle in a pool-riffle-pool (PRP) sequence. Heat tra...
Fractional Laplacian time-space models for linear and nonlinear lossy media exhibiting arbitrary frequency dependency
Fractional Laplacian time-space models linear and nonlinear lossy media arbitrary frequency dependency
2010/10/22
Frequency-dependent attenuation typically obeys an empirical power law with an exponent ranging from 0 to 2. The standard time-domain partial differential equation models can describe merely two extre...