Now showing items 498-517 of 619

  • [2011-02-08] Rheological and nanomechanical characterization of aging in polymer modified asphalt 

    Yousefi, Seyed Saleh
    In this study, change in rheological and nanomechanical properties of asphalt due to aging is determined in the laboratory. Asphalt binders are aged using Rolling Thin Film Oven (RTFO), Pressure Aging Vessel (PAV), and ...
  • [2010-09-09] Rights management over web mashups 

    Yamuzala Venkata, Aswin
    Web mashups have become one of the most powerful features of the Web 2.0 revolution. Though the sources of the mashups have access control over their content, the lack of proper Rights Management over the content given out ...
  • [2012-04-24] Robust adaptive control for a class of partially known nonlinear systems 

    Abdallah, Chaouki T.; Lewis, F. L.; Maliotis, G.
    An adaptive controller is developed that takes advantage of the structure and any known dynamics of the system in order to increase speed of adaptation and relax the conditions required for convergence. The control design ...
  • [2012-04-24] Robust control of accelerators 

    Abdallah, Chaouki T.; Johnson, W. Joel D.
    The problem of controlling tile variations in the rf power system can be effectively cast as an application of modern control theory. Two components of this theory are obtaining a model and a feedback structure. The model ...
  • [2012-04-24] Robust Control of Particle Accelerators 

    Abdallah, Chaouki T.; Johnson, W. Joel D.
    Abstract In this paper, we present a new technique for controlling the electric fields of an electron particle accelerator. This new scheme has greater stability and performance robustness than was previously achieved.
  • [2012-04-12] Robust finite-time stability design via linear matrix inequalities 

    Abdallah, Chaouki T.; Dorato, Peter; Famularo, D.
    For linear systems with polytopic uncertainties, the problem of robust finite-time stabilization is reduced to a system of Linear Matric Inequalities.
  • [2012-04-13] Robust lateral control of highway vehicles 

    Abdallah, Chaouki T.; Byrne, Raymond H.
    Vehicle lateral dynamics are affected by vehicle mass, longitudinal velocity, vehicle inertia, and the cornering stiffness of the tires. All of these parameters are subject to variation, even over the course of a single ...
  • [2012-03-29] Robust mobile robotic formation control using internet-like protocols 

    Abdallah, Chaouki T.; Sandoval-Rodriguez, R.; Byme, R. H.
    This work presents an internet-like protocol (ILP) to coordinate the formation of n second-order agents in a two dimensional (2D) space. The trajectories are specified trough via points and a desired formation at each ...
  • [2012-04-12] Robust multiobjective feedback design via combined quantifier elimination and discretization 

    Abdallah, Chaouki T.; Yang, Wei; Dorato, Peter
    This paper deals with the application of computerized quantifier elimination (QE) methods for robust multiobjective feedback design, when design objectives are specified in the frequency domain. The class of design problems ...
  • [2012-04-07] Robust non-fragile LQ controllers: the static state feedback case 

    Abdallah, Chaouki T.; Famularo, Domenico; Jadbabaie, Ali; Dorato, Peter; Haddad, Wassim M.
    This paper describes the synthesis of non-fragile or resilient regulators for linear systems. The general framework for fragility is described using state-space methodologies, and the LQ/H2 static state-feedback case is ...
  • [2012-04-07] Robust non-fragile LQ controllers: the static state feedback case 

    Abdallah, Chaouki T.; Famularo, Domenico; Dorato, Peter; Haddad, Wassim M.; Jadbabaie, Ali
    This paper describes the synthesis of non-fragile or resilient regulators for linear systems. A general framework for fragility is described using state-space methodologies, and the LQ/H2 static state-feedback problem is ...
  • [2012-04-10] Robust non-fragile LQ controllers: the static state feedback case 

    Abdallah, Chaouki T.; Famularo, Domenico; Jadbabaie, Ali; Dorato, Peter; Wassim M. Haddad
    This paper describes the synthesis of non-fragile or resilient regulators for linear systems. The general framework for fragility is described using state-space methodologies, and the LQ/H2 static state-feedback case is ...
  • [2013-01-31] A robust patch-based synthesis framework for combining inconsistent images 

    Darabi, Aliakbar
    Current methods for combining different images produce visible artifacts when the sources have very different textures and structures, come from far view points, or capture dynamic scenes with motions. In this thesis, ...
  • [2012-03-30] Robust stability of time delay systems: Theory 

    Abdallah, Chaouki T.; Chiasson, John
    Given that a time-delay system is stable for some delay h0 > 0, a procedure is given to find the stability interval [h1 ; h2 ] such that h0 2 [h1 ; h2] and for all h satisfying h1 < h < h2 the system is stable. Further, ...
  • [2012-04-07] Robust, non-fragile and optimal controller design via linear matrix inequalities 

    Abdallah, Chaouki T.; Jadbabaie, Ali; Famularo, Domenico; Dorato, Peter
    In this article, we introduce a robust nonfragile state feedback controller which is also optimal with respect to a quadratic performance index, using linear matrix inequalities (LMI). The uncertainties are assumed to be ...
  • [2012-04-24] A Routh-like algorithm in system identification and adaptive control 

    Abdallah, Chaouki T.; Lewis, F. L.; Stevens, B. L.
    This paper introduces algorithms to be used for finding the Cauchy index of a transfer function and for solving the Diophantine equation. The algorithms are similar to the Routh-Hurwitz array in structure and are simple ...
  • [2013-01-30] S band narrow-wall slotted waveguide antenna For high-power applications 

    Pan, Xuyuan
    This work seeks designs of novel antennas, such as the rectangular waveguide narrow-wall longitudinal-aperture antenna arrays for S band high power applications. This antenna is designed to perform as a uniform array with ...
  • [2012-07-03] Seasonal influent characterization, model calibration, SRT and energy usage for nitrogen removal at a full scale wastewater plant 

    Raoufi, Roozbeh
    This study focused on factors affecting biological denitrification in wastewater treatment. Denitrification is a process in which heterotrophic bacteria use nitrate as an electron acceptor (in the absence of oxygen) and ...
  • [2010-09-09] Second law analysis of a natural gas-fired steam boiler and cogeneration plant 

    Conklin, Eric D
    A second law thermodynamic analysis of a natural gas-fired steam boiler and cogeneration plant at Rice University was conducted. The analysis included many components of the plant including piping, valves, boilers, turbines, ...
  • [2011-07-02] Selective epitaxial growth techniques to integrate high-quality germanium on silicon 

    Leonhardt, Darin
    High-quality Ge-on-Si heterostructures have been actively pursued for many advanced applications, including near-infrared photodetectors, high-mobility field effect transistors, and virtual substrates for integrating III-V ...