Results 21 to 30 of about 53 (49)

The Transient Semiconductor Problem With Generation Terms, II

open access: yes, 1989
We consider a modified time-dependent van Roosbroeck system with saturating velocities and a source term subject to assumptions designed to permit a standard generation term corresponding to impact ionization.
Thomas I. Seidman
core  

Kinetic Boundary Layers and Fluid-Kinetic Coupling in Semiconductors

open access: yes
. The semiconductor Boltzmann equation with elastic collisions as the dominating scattering effects is considered. For the corresponding fluid limit, the spherical harmonics expansion model, kinetic boundary layers are analyzed and higher order accurate ...
Christian Schmeiser, Pierre Degond
core   +1 more source

Existence of Solutions of a Kinetic Equation Modelling Cometary Flows

open access: yes, 2007
A global existence theorem is presented for a kinetic problem of the form @ t f + v \Delta r x f = Q(f) ; f(t = 0) = f 0 ; where Q(f) is a simplified model wave-particle collision operator extracted from quasilinear plasma physics.
The Erwin   +5 more
core  

An SIR model with viral load-dependent transmission. [PDF]

open access: yesJ Math Biol, 2023
Della Marca R, Loy N, Tosin A.
europepmc   +1 more source

On a Singular Limit Problem for Nonlinear Maxwell's Equations

open access: yes, 1998
: In this paper we study the following nonlinear Maxwell's equations "E t + oe(x; jEj)E = r \Theta H+F; H t +r \Theta E = 0, where oe(x; s) is a monotone graph of s. It is shown that the system has a unique weak solution.
Hong-Ming Yin
core  

The State of US Health, 1990-2016: Burden of Diseases, Injuries, and Risk Factors Among US States. [PDF]

open access: yesJAMA, 2018
US Burden of Disease Collaborators   +116 more
europepmc   +1 more source

On a novel gradient flow structure for the aggregation equation. [PDF]

open access: yesCalc Var Partial Differ Equ
Esposito A   +3 more
europepmc   +1 more source
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