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Academy of Mathematics and Systems Science, CAS Colloquia & Seminars：Homogenization of a front propagation model in dynamic environments
动态环境 前端传播模型 均质化 一阶哈密尔顿-雅可比方程
2023/4/18
In this talk I will review the developments of homogenization theory for a front propagation model. It is described by a first order Hamilton-Jacobi equation with a Hamiltonian that grows linearly wit...
COUPLE GRAPH BASED LABEL PROPAGATION METHOD FOR HYPERSPECTRAL REMOTE SENSING DATA CLASSIFICATION
Graph Label Propagation Semi-Supervised method Classification Hyperspectral Remote Sensing
2018/5/15
Graph based semi-supervised classification method are widely used for hyperspectral image classification. We present a couple graph based label propagation method, which contains both the adjacency gr...
2017OSA大气和海洋现象的传播和表征专题会议（Propagation Through and Characterization of Atmospheric and Oceanic Phenomena）
2017 OSA 大气和海洋现象的传播和表征 专题会议
2017/4/26
pcAOP is a forum for the presentation of research in the physics of light propagation in either the atmosphere or ocean, to include distributed volume turbulence, gravity waves, vortex shedding, stab...
Optics in Atmospheric Propagation and Adaptive Systems
Optical Turbulence Atmospheric Effects
2016/7/28
Sea-spray aerosols are the predominant absorbers and scatterers in the oceanic and unpolluted coastal environment and thereby greatly determine the visibility. Over the last decades, a multitude of fi...
FLAME PROPAGATION IN ONE-DIMENSIONAL STATIONARY ERGODIC MEDIA
FLAME PROPAGATION ONE-DIMENSIONAL STATIONARY MEDIA
2015/10/15
This paper investigates front propagation in random media for a free boundary problem arising in combustion theory. We show the existence of asymptotic travelling waves solutions with effective speedd...
Computer animation as a tool to visualize effects of seismic wave propagation inside heterogeneous media
computer animations numerical modelling seismic wave propagations
2015/9/30
A technique to make computer animations representing the propagation of antiplane shear waves in heterogeneous dissipative media is presented. The aim is to develop a useful tool to better investigate...
MAP SOURCE SEPARATION USING BELIEF PROPAGATION NETWORKS
MAP SOURCE SEPARATION BELIEF PROPAGATION NETWORKS
2015/9/29
In this paper we continue our treatment of source separation based on dynamic sparse source signal models. Source signals are modeled in frequency domain as a product of a Bernoulli selection variable...
Proposals are made for Earth-space and space-space paths to apply the term ?propagation degradation probability?, analogous to ?basic circuit reliability? adopted within the Radiocommunication Sector ...
Nowcasting, forecasting and warning for ionospheric propagation: tools and methods
Nowcasting ionospheric propagation
2015/9/14
The paper reviews the work done in the course of the COST 271 Action concerned with the development of tools and methods for forecasting, nowcasting and warning of ionospheric propagation conditions. ...
Total electron content - A key parameterin propagation: measurement and usein ionospheric imaging
parameterin ionosphere
2015/9/14
The paper reports on a series of studies carried out within the COST 271 Action relating to the measurement and use of Total Electron Content (TEC) of the ionosphere over North West Europe.
Total ele...
Planetary and gravity wave signatures in the F-region ionosphere with impacton radio propagation predictionsand variability
Radio propagation ionization
2015/9/14
The aim of this work within the WP 3.1 of the COST 271 Action is the characterization of the variability introduced in the F-region ionosphere by -Planetary Wave Signatures- (PWS) and -Gravity Wave
S...
Modeling the dynamic rupture propagation on heterogeneous faults with rate- and state-dependent friction
dynamic rupture fault constitutive law fault friction stress heterogeneities
2015/9/10
We investigate the effects of non-uniform distribution of constitutive parameters on the dynamic propagation of
an earthquake rupture. We use a 2D finite difference numerical method and we assume tha...
3D dynamic simulations of spontaneous rupture propagation governed by different constitutive laws with rake rotation allowed
earthquake dynamics numerical modeling friction laws slip time history rake rotation
2015/9/10
In this work we present a 3D Finite Difference numerical method to model the dynamic spontaneous propagation
of an earthquake rupture on planar faults in an elastic half-space. We implement the Tract...
Aspects of HF radio propagation
Ionospheric propagation mid-latitude trough radiolocation propagation modelling backscatter sounding
2015/8/28
radio systems. From the point of view Working Group 2 of the COST 296 Action, interest lies with effects associated with propagation via the ionosphere of signals within the HF band. Several aspects a...
Azimuthal propagation of seismo-magnetic signals from large earthquakes in Taiwan
earthquake emission frequency wavenumber method earthquake forecast
2015/8/24
This study uses a network that is comprised of 10 total intensity magnetometers to detect azimuthal propagation of seismo-magnetic emission waves during 26 earthquakes that occurred between July 2007 ...