## Search

Now showing items 31-40 of 223

#### Convergence to equilibrium of a linearized quantum Boltzmann equation for bosons at very low temperature

(Kinetic and Related Models, 2015-09-01)

We consider an approximation of the linearised equation of the homogeneous Boltzmann equation that describes the distribution of quasipar-ticles in a dilute gas of bosons at low temperature. The corresponding collision ...

#### A Hyperbolic system and the cost of the controllability for the Stokes system

(Computational and Applied Mathematics, 2014-12-31)

This paper is devoted to study the cost of the null controllability for the Stokes system. Using the control transmutation method, we show that the cost of driving the Stokes system to rest at time $T$ is of order $e^{CIT} ...

#### Mode-independent H2-control of a DC motor modeled as a Markov jump linear system

(IEEE Transactions on Control Systems Technology, 2014-12-31)

This brief presents a control strategy for Markov jump linear systems (MJLS) with no access to the Markov state (or mode). The controller is assumed to be in the linear state-feedback format and the aim of the control ...

#### A functional limit theorem for stochastic integrals driven by a time-changed symmetric sigma-stable Levy process

(Stochastic Processes and their Applications, 2014-12-31)

Under proper scaling and distributional assumptions, we prove the convergence in the Skorokhod space endowed with the $M_1$-topology of a sequence of stochastic integrals of a deterministic function driven by a time-changed ...

#### Robust ‚H-2 static output feedback to control an automotive throttle valve

(Proceedings of the American Control Conference, 2014-12-31)

The paper presents a control strategy for an automotive electronic throttle body, a device largely used into vehicles to increase the efficiency of the combustion engines. The synthesis of the proposed controller is based ...

#### Topological degree in the generalized gause prey-predator model

(Journal of Mathematical Analysis and Applications, 2014-12-31)

We consider a generalized Gause prey-predator model with T-periodic continuous coefficients. In the case where the Poincar√© map P over time T is well defined, the result of the paper can be explained as follows: we locate ...

#### Global Attractor for a Generalized Discrete Nonlinear Schrödinger Equation

(Acta Applicandae Mathematicae, 2014-12-31)

A generalized discrete nonlinear Schr√∂dinger equation (Formula presented.) with long-range interactions in weighted spaces (Formula presented.) is considered. Under suitable assumptions on the coupling constants J(m), the ...

#### On the existence and asymptotic stability of solutions for unsteady mixing-layer models

(Discrete and Continuous Dynamical Systems- Series A, 2014-12-31)

We introduce in this paper some elements for the mathematical analysis of turbulence models for oceanic surface mixing layers. We consider Richardson-number based vertical eddy diffusion models. We prove the existence of ...

#### Controllability of fast diffusion coupled parabolic systems

(Mathematical Control and Related Fields, 2014-12-31)

In this work we are concerned with the null controllability of coupled parabolic systems depending on a parameter and converging to a parabolic-elliptic system. We show the uniform null controllability of the family of ...

#### Weak observability estimates for 1-D wave equations with rough coefficients

(Annales de l'Institut Henri Poincare. Annales: Analyse Non Lineaire/Nonlinear Analysis, 2014-12-31)

In this paper we prove observability estimates for 1-dimensional wave equations with non-Lipschitz coefficients. For coefficients in the Zygmund class we prove a "classical" estimate, which extends the well-known observability ...