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Now showing items 31-40 of 47

#### Counterexample of loss of regularity for fractional order evolution equations with both degenerating and oscillating coefficients

(2014-12-31)

For weak evolution models of fractional order with singularity near the origin, the joint influence from the principal œÉ-Laplacian operator, degenerating part and oscillating part is of prime concern in the discussion of ...

#### Almost periodic parameters for the second moment stability of linear stochastic systems

(2014-12-31)

The technical note presents conditions to assure the uniform second moment stability for a class of linear time-varying stochastic systems. The system parameters are assumed to be almost periodic, a concept that is weaker ...

#### On approximation of an optimal boundary control problem for linear elliptic equation with unbounded coefficients

(2014-12-31)

We study an optimal boundary control problem (OCP) associated to a linear elliptic equation -div (‚àáy + A(x)‚àáy) = f. The characteristic feature of this equation is the fact that the matrix A(x) = [aij (x)] i;j=1;

#### Pullback exponential attractors for evolution processes in Banach spaces: Properties and applications

(2014-12-31)

This article is a continuation of our previous work [5], where we formulated general existence theorems for pullback exponential attractors for asymptotically compact evolution processes in Banach spaces and discussed its ...

#### Averaged control and observation of parameter-depending wave equations

(2014-12-31)

We analyze the problem of averaged observability and control of wave equations.This topic is motivated by the control of parameter-dependent systems of wave equations. We look for controls ensuring the controllability of ...

#### Symmetric discontinuous Galerkin approximations of waves: high frequency propagation and control

(2014-12-31)

This work describes the propagation properties of the so-called symmetric interior penalty discontinuous Galerkin (SIPG) approximations of the 1-d wave equation. This is done by means of linear approximations on uniform ...

#### Optimal sensor location for wave and Schrödinger equations

(2014-12-31)

This paper summarizes the research we have carried out recently on the problem of the optimal location of sensors and actuators for wave equa- tions, which has been the object of the talk of the third author at the Hyp2012 ...

#### A note on complete hyperbolic operators with log-Zygmund coefficients

(2014-12-31)

The present paper is the continuation of the recent work [7], and it is devoted to strictly hyperbolic operators with non-regular coefficients. We focus here on the case of complete operators whose second-order coefficients ...

#### Optimal shape and location of sensors or actuators in PDE models

(2014-12-31)

We investigate the problem of optimizing the shape and location of sensors and actuators for evolution systems driven by distributed parameter systems or partial differential equations (PDE). We consider wave, Schr√∂dinger ...

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

(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 ...