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Academy of Mathematics and Systems Science, CAS Colloquia & Seminars：Nonlinear structural stability and linear dynamic instability of transonic steady-states to a hydrodynamic model for semiconductors
跨音速稳态 非线性结构稳定性 线性动态不稳定性 半导体 流体动力学模型
2023/5/8
For unipolar hydrodynamic model of semiconductor device represented by Euler-Poisson equations, when the doping profile is supersonic, the existence of steady transonic shock solutions and C^\infty-sm...
Academy of Mathematics and Systems Science, CAS Colloquia & Seminars：Stability and instability of a generic non--conservative compressible two--fluid model
通用非保守 可压缩 双流体模型 稳定性 不稳定性
2023/5/8
We are concerned with stability and instability of the steady state (1,0, 1, 0) for a generic non–conservative compressible two–fluid model in R^3. Under the assumption that the initial fraction densi...
DIFFERENTIAL SAR INTERFEROMETRY TECHNIQUE FOR CONTROL OF LINEAR INFRASTRUCTURES AFFECTED BY GROUND INSTABILITY PHENOMENA
linear infrastructures landslides monitoring DInSAR surface displacements damage
2018/4/18
The Italian territory is strongly affected by ground instability phenomena and the occurrence of geological events, such as landslides and subsidence, is one of the main causes of damage to linear inf...
DIFFERENTIAL SAR INTERFEROMETRY TECHNIQUE FOR CONTROL OF LINEAR INFRASTRUCTURES AFFECTED BY GROUND INSTABILITY PHENOMENA
linear infrastructures landslides monitoring DInSAR surface displacements damage
2018/5/8
The Italian territory is strongly affected by ground instability phenomena and the occurrence of geological events, such as landslides and subsidence, is one of the main causes of damage to linear inf...
Terrestrial Laser Scanning for Assessing the Risk of Slope Instability along Transport Corridors
change engineering geomorphology
2015/12/16
Transport networks play a crucial part in the global economy, with roads and railways being of particular importance at regional and
national scales. However, roads and railways are founded on earthw...
Entrainment of Micromechanical Limit Cycle Oscillators in the Presence of Frequency Instability
Limit cycles micromechanical devices optical resonators oscillators thermomechanical processes
2015/8/27
The nonlinear dynamics of micromechanical oscil-lators are explored experimentally. Devices consist of singly and doubly supported Si beams, 200nm thick and 35 μm long.When illuminated within a laser ...
Instability of one-step replica-symmetry-broken phase in satisfiability problems
Solutions random stability high energy density
2015/8/21
We reconsider the one-step replica-symmetry-breaking (1RSB) solutions of two random combina- torial problems: k-XORSAT and k-SAT. We present a general method for establishing the stability of these so...
Condition for liquefaction instability in fluid-saturated granular soils
Bifurcation Instability Liquefaction Undrained condition Saturated sands
2015/7/1
High-porosity granular materials such as loose sands can implode when subjected to compressive stresses. The mechanism of deformation is diffuse in that the jump in the strain rate tensor has three in...
Spatial data analysis for the assessment of slope instability; application to EIA for a case study in the Vergara-Eibar area, Guipuzoa, Spain
GIS Hazard Landslides Mathematical models Spatial database Validation EIA
2015/2/5
The assessment of both hazards and impacts of human activities on geomorphological processes must be based on a
detailed analysis of terrain dynamics and behaviour, prior to the proposed new actions....
EMPIRICAL STUDY OF ACOUSTIC INSTABILITY IN PREMIXED FLAMES: MEASUREMENTS OF FLAME TRANSFER FUNCTION
flame transfer function EMPIRICAL STUDY
2015/1/12
Inordertoconformtopollutant-controlregulationsandminimizeNOxemissions,
modernhouseholdboilersandcentralheatingsystemsaremovingtowardpremixed
combustors.Thesecombustorshavebeensuccessfulwithregardsto...
Macroscopic Patterning via Dynamic Self-assembly and Wrinkling Instability
evaporative self-assembly multicomponent patterning periodic patterns wrinkling
2014/11/21
My PhD work focuses on developing new methods to create the macroscopic patterns in a simple, robust, and versatile way. For macroscopic pattern formation, we first use flow coating as an assembly tec...
Creasing Instability of Hydrogels and Elastomers
Creasing instability Elastomers Hydrogels Mechanical instabilities Surface energy Morphology
2014/11/21
Soft polymers placed under compressive stress can undergo an elastic creasing instability in which sharp folds spontaneously form on the free surfaces. This process may play an important role in conte...
Interannual Variability of Energy Flux in Atmospheric Instability Conditions at Pantanal of Mato Grosso-Brazil
Latent Heat Sensible Heat Energy Partition Wetlands
2013/2/27
The energy balance partitions in wetlands have gained notoriety due to the dynamics and importance of these areas for regional and local climate. Thus, the study was conducted about seasonal and inter...
Shoreline Instability Study on Fun Island Resorts, Maldives
Erosion Glaciation Global Warming Abrasion Groynes
2013/3/12
Shoreline changes induced by erosion and accretion are natural processes that take place over a range of time scales. They may occur in response to smaller-scale events, such as storms, regular wave a...
Absolute linear instability in laminar and turbulent gas/liquid two-layer channel flow
Absolute linear instability laminar and turbulent gas/liquid two-layer channel flow Fluid Dynamics
2012/4/20
We study two-phase stratified flow where the bottom layer is a thin laminar liquid and the upper layer is a fully-developed gas flow. The gas flow can be laminar or turbulent. To determine the boundar...