Browsing by Subject "Approximation theory"
Now showing items 117 of 17

Conference Object
Approximating optimal place sensor selection for structural observability in discrete event systems modeled by petri nets
(2007)In this paper, we study place sensor selection problems in Discrete Event Systems modeled by Petri nets with outputs (i.e., Petri nets with transition and place sensors). Our goal is to place a minimal number of sensors ...

Conference Object
A broadband 1:4 Series power divider using metamaterial phaseshifting lines
(2005)A metamaterial 1:4 series power divider that provides equal power split to all four output ports over a large bandwidth Is presented. The divider comprises four nonradiating metamaterial lines In series that can each Incur ...

Article
The didentifying codes problem for vertex identification in graphs: Probabilistic analysis and an approximation algorithm
(2006)Given a graph G(V, E), the identifying codes problem is to find the smallest set of vertices D ⊆ V such that no two vertices in V are adjacent to the same set of vertices in D. The identifying codes problem has been applied ...

Conference Object
Distributed strategies for balancing a weighted digraph
(2012)A weighted digraph is balanced if, for each node, the sum of the weights of the edges outgoing from that node is equal to the sum of the weights of the edges incoming to that node. Weightbalanced digraphs play a key role ...

Conference Object
An edgeworth series expansion for multipath fading channel densities
(2002)Identifying the statistical characteristics of the received signal in wireless communications, plays an important role in the design of different functions of the overall communications system. We demonstrate here that the ...

Article
Finitetime disturbance attenuation control problem for singularly perturbed discretetime systems
(1998)In this paper we consider the problem of finitetime H∞optimal control of linear, singularly perturbed, discretetime systems. The problem is addressed from the game theoretic approach. This leads to a singularly perturbed, ...

Conference Object
H∞optimal control of singularly perturbed discretetime systems, and risksensitive control
(IEEE, 1994)The H∞optimal control and risksensitive control of linear singularly perturbed, discretetime systems is described. It is shown that the Riccati equation associated with the solution of the H∞optimal control problem, ...

Article
Influence of polarization field on the lasing properties of IIInitride quantum wells
(2006)A theoretical investigation of the effect of polarizationinduced fields on the optoelectronic properties of a 3 nm In0.2Ga0.8N/GaN single quantum well has been carried out via a selfconsistent solution of SchrödingerPoisson ...

Article
Influence of water model and nanotube rigidity on the density of water in carbon nanotubes
(2008)The density of water calculated through molecular dynamic simulations using different water models and rigid/flexible carbon nanotubes is studied. A previous equation, determined in an earlier work in order to correlate ...

Conference Object
Injection molding of dilute and semidilute fiber suspensions
(Publ by ASME, 1992)The focus of this paper is unsteady flow of semidilute fiber suspensions in complex geometries. These flows are typical of injection molding problems in which the raw material in granular form, usually plastic resin mixed ...

Article
Linear analysis of generalized turbulent hyperbolic flow in a rotating frame
(2007)We apply inviscid rapid distortion theory to the generalized case of turbulent hyperbolic flow in a rotating frame and investigate the dependence of the evolution of the turbulent kinetic energy on the frame rotation rate. ...

Article
Magnetohydrodynamic turbulence at moderate magnetic Reynolds number
(2004)We consider the case of homogeneous turbulence in a conducting fluid that is exposed to a uniform external magnetic field at low to moderate magnetic Reynolds numbers (by moderate we mean here values as high as 20). When ...

Conference Object

Article
Optical and electrical properties of selectively deltadoped strained InxGa1xAs/GaAs quantum wells
(1996)We report here an investigation of selectively deltadoped strained InGaAs/GaAs quantum wells. Electronic structures of the systems were calculated by selfconsistently solving the Schrödinger and Poisson equations and the ...

Conference Object
Stochastic channel modeling for ad hoc wireless networks
(2006)Due to nodes mobility and environmental changes in mobile ad hoc networks, the ad hoc channel is time varying and subject to fading. As a consequence of these variations, the statistical characteristics of the received ...

Article
Stochastic power control for wireless systems: Classical and viscosity solutions
(2001)This paper considers power control for lognormal fading channels. A rate based power set point control model and an associated performance measure are introduced. Within this framework, a stochastic optimal power control ...

Article
Unsteady flow of semiconcentrated suspensions using finite deformation tensors
(1994)The interest in the theoretical investigation of the flow behavior of fiber suspensions during manufacturing processes has increased considerably due to the increased interest in the use of composite materials. The unsteady ...