Browsing by Subject "Mathematical models"
Now showing items 120 of 62

Automatic steering control of unmanned vehicles
(2000)The problem of robust automatic steering of an autonomous unmanned vehicle is studied. The problem is solved using a robust PD feedback controller feeding back the path error and the front steering angle. The design goal ... 
A bayesian identification methodology for selection among Pareto optimal structural models using modal residuals
(2005)The structural parameter estimation problem based on measured modal data is formulated as a multiobjective optimization problem in which modal metrics measuring the fit between measured and model predicted groups of modal ... 
Buckling of thinwalled long steel cylinders under bending
(2010)The present paper investigates structural response and buckling of long unstiffened thinwalled cylindrical steel shells, subjected to bending moments, with particular emphasis on their stability design. The cylinder ... 
A chanceconstrained based stochastic dynamic traffic assignment model: Analysis, formulation and solution algorithms
(2006)This paper is concerned with the system optimumdynamic traffic assignment (SODTA) problem when the timedependent demands are random variables with known probability distributions. The model is a stochastic extension of ... 
Command following and disturbance rejection for drillstring systems
(2000)In this paper a PD state feedback law is proposed to control the angular velocity of the bit of an drillstring system. The design objective is: the angular velocity of the bit to follow a desired signal independently from ... 
Computational techniques for stability analysis of a class of dynamic economic models
(2012)Modern microeconomics and macroeconomics study dynamic phenomena. Dynamics could predict future states of an economy based on its structural characteristics. Dynamic models in discrete time discrete state economic systems ... 
Constitutive modeling and finite element methods for TRIP steels
(2006)A constitutive model that describes the mechanical behavior of steels exhibiting "TRansformation Induced Plasticity" (TRIP) during martensitic transformation is presented. Multiphase TRIP steels are considered as composite ... 
Crane load swing suppression control
(2006)The paper examines problems of an antisway system for crane control. The crane is modelled and simulated; antisway control results are presented and suggestions for further work are made. 
Dialoguebased personalized reflective learning
(2004)The WebBased Reflective Tutorial Dialogue System (WReTuDiS) is a system for personalized learning of historical text comprehension on the Web. The system offers a two level open interface: tutor level and learner level. ... 
Direct ethanol fuel cell anode simulation model
(2006)The electrochemical behavior of a direct ethanol feed proton exchange membrane fuel cell (DEFC) operating under steadystate isothermal conditions at 1 atm at both anode and cathode sides is considered. A mathematical model ... 
Distributed online schedule adaptation for balanced slot allocation in wireless ad hoc networks
(2004)We propose an algorithm for design and on the fly modification of the schedule of a wireless ad hoc network for provision of fair service guarantees under topological changes. The primary objective is to derive a distributed ... 
Disturbance decoupling of singular systems via PD feedback
(1999)The problem of disturbance decoupling of singular systems via proportional plus derivative (PD) feedback is solved. The necessary and sufficient condition for the problem to be solvable is established as a rank condition ... 
Endtoend bandwidth guarantees through fair local spectrum share in wireless adhoc networks
(2005)Sharing the common spectrum among the links in a vicinity is a fundamental problem in wireless adhoc networks. Lately, some scheduling approaches have been proposed that guarantee fair share of bandwidth among the links. ... 
Estimation of diffusion coefficients in acetone  Cellulose acetate solutions
(1999)The mutual and the selfdiffusion coefficients of the acetonecellulose acetate system are determined by using established gravimetric measurements of the acetone evaporation rate. The process is studied as a onedimensional ... 
Evolutionary fuzzy multiobjective routing for wireless mobile ad hoc networks
(2004)The complexity involved in implementing multiobjective routing in computer networks has led to many researchers exploring alternate solutions with the use of heuristic based techniques. The rationale underlying the use ... 
Finite element analysis of buried steel pipelines under strikeslip fault displacements
(2011)The present paper investigates the mechanical behavior of buried steel pipelines, crossing active strikeslip tectonic faults. The fault plane is vertical and crosses the pipeline axis at a certain angle. The interacting ... 
Finite element implementation of gradient plasticity models part I: Gradientdependent yield functions
(1998)Theories with intrinsic or material length scales find applications in the modeling of sizedependent phenomena such as, for example, the localization of plastic flow into shear bands. In gradienttype plasticity theories, ... 
Finite element implementation of gradient plasticity models Part II: Gradientdependent evolution equations
(1998)The variational formulation and finite element implementation of a class of plasticity models with gradientdependent yield functions is covered in detail in Part I. In this sequel, attention is focussed upon the finite ... 
Finite element modeling to expand the UMCCA model to describe biofilm mechanical behavior
(2005)In order to understand the influence of biofilm's physical and microbiological structures on its mechanical behavior, a finite element model that describes the structural mechanics of a composite solid is linked to the ... 
Fisheye camera modeling for human segmentation refinement in indoor videos
(2013)In this paper, we concentrate on refining the results of segmenting human presence from indoors videos acquired by a fisheye camera, using a 3D mathematical model of the camera. The model has been calibrated according to ...