Now showing items 295-314 of 619

  • [2009-01-29] Laboratory evaluation of cracking in asphalt concrete 

    Kias, Evan Michael Casey
    Cracking is one of the major distresses in asphalt concrete leading to high maintenance and rehabilitation costs throughout the nation’s pavement infrastructure. Asphalt concrete is a three phase, heterogeneous composite ...
  • [2012-07-03] Laboratory investigation of fatigue endurance limits in asphalt concrete 

    Bateman, Damien
    It is believed that Hot Mix Asphalt (HMA) mixtures used in long-lasting pavements contain a threshold of strain value below which no fatigue damage occurs. This concept is known as the fatigue endurance limit (FEL). Although ...
  • [2011-02-09] LARGE AREA 3D PHOTONIC CRYSTALS WITH EMBEDDED WAVEGUIDES 

    Raub, Alexander
    A crystal is a periodic and repeating arrangement of atoms or molecules. Photonic crystals are structures with periodic variations in the dielectric constants that manipulate and control the properties of light propagation. ...
  • [2010-09-10] Lateral outflow from supercritical channels 

    Bernardo, Nelson
    Stormwater pollutants caused by urban runoff are a major concern for the Albuquerque Metropolitan Arroyo Flood Control Authority (AMAFCA), and other flood control authorities, as stormwater channels eventually are discharged ...
  • [2012-07-02] Lattice-based peridynamic modeling of linear elastic solids 

    Rahman, A. S. M.
    Concrete is a complex material often used in civil engineering structures. This quasi-brittle material, when reinforced with steel, develops cohesive cracks under loading even though it has adequate strength to carry service ...
  • [2007-04-17] Leader-Follower Control with Odometry Error Analysis 

    Piovesan, Jorge; Abdallah, Chaouki; Tanner, Herbert
    In this paper we present a leader-follower control law that enables a mobile robot to track a desired trajectory, and allows us to specify the position in the plane of the follower robot with respect to the leader robot. ...
  • [2012-03-24] A Learning Algorithm for Applying Cohen's Models to System Identification 

    Abdallah, Chaouki T.; Howes, James W.; Heileman, Gregory L.
    Abstract In this paper we extend the models discussed by Cohen (1992) by introducing an input term. This allows the resulting models to be utilized for system identification tasks. We prove that this model is stable in the ...
  • [2012-03-29] Least squares support vector machines for direction of arrival estimation 

    Abdallah, Chaouki T.; Rohwer, Judd A.; Christodoulou, Christos G.
    Machine learning research has largely been devoted to binary and multiclass problems relating to data mining, text categorization, and pattern/facial recognition. Recently, popular machine learning algorithms, including ...
  • [2012-03-29] Least squares support vector machines for direction of arrival estimation with error control and validation 

    Abdallah, Chaouki T.; Rohwer, Judd A.; Christodoulou, Christos G.
    The paper presents a multiclass, multilabel implementation of least squares support vector machines (LS-SVM) for direction of arrival (DOA) estimation in a CDMA system. For any estimation or classification system, the ...
  • [2012-03-29] Least squares support vector machines for DOA estimation with classification error control 

    Abdallah, Chaouki T.; Hayajneh, M.
    We consider a game-theoretic power control algorithm in interference limited fading channels, where we propose a distributed (non-cooperative) algorithm to optimize the induced fading outage probability by maximizing the ...
  • [2012-03-29] Least squares support vector machines for fixed-step and fixed-set CDMA power control 

    Abdallah, Chaouki T.; Rohwer, Judd A.; Christodoulou, Christos G.
    This paper presents two machine learning based algorithms for CDMA power control. The least squares support vector machine (LS-SVM) algorithms classify eigenvalues estimates into sets of power control commands. A binary ...
  • [2012-03-27] LINEAR ALGEBRA & MATRICES 

    Abdallah, Chaouki T.; Ariola, M.; Amato, F.
  • [2012-04-12] Linear-quadratic simultaneous performance design 

    Abdallah, Chaouki T.; Luke, Robert A.; Dorato, Peter
    In this paper the problem of designing a fixed state feedback control law which minimizes an upper bound on linear-quadratic performance measures for m distinct plants is reduced to a convex programming problem.
  • [2012-03-27] Load balancing in the presence of random node failure and recovery 

    Abdallah, Chaouki T.; Dhakal, Sagar; Hayat, Majeed M.; Pezoa, Jorge E.; Birdwell, J. Doug; Chiasson, John
    In many distributed computing systems that are prone to either induced or spontaneous node failures, the number of available computing resources is dynamically changing in a random fashion. A load-balancing (LB) policy for ...
  • [2012-03-30] Load balancing instabilities due to time delays in parallel computation 

    Abdallah, Chaouki T.; Birdwell, J. Douglas; Chiasson, John; Chupryna, Victor; Tang, Zhong; Wang, Tsewei
    A deterministic dynamic linear time-delay model is presented to model load balancing in a cluster of nodes used for parallel computations. The model is analyzed for stability in terms of the delays in the transfer of ...
  • [2010-06-25] Long-term desorption behavior of uranium and neptunium in heterogeneous volcanic tuff materials 

    Cynthia, Dean
    Uranium and neptunium desorption were studied in long-term laboratory experiments using four well-characterized volcanic tuff cores collected from southeast of Yucca Mountain, Nevada. The objectives of the experiments were ...
  • [2010-06-28] Longwave and bi-color type-II InAs/(In)GaSb superlattice infrared detectors 

    Khoshakhlagh, Arezou
    Infrared (IR) photodetectors are useful for a variety of military and civil applications such as target acquisition, medical diagnostics, pollution monitoring, to name just a few. Presently photonic IR detectors are based ...
  • [2012-04-24] Los Libertadores: Science and Technology Education in Latin America 

    Abdallah, Chaouki T.; Jordan, R.; Pollard, L. H.; Sanín, J.; Miskulin, M.; Franco, P.; De Giusti, M.
    The world has become dependent on information, technology, and telecommunications. Better known as Information Technology and Telecommunications (IT), a term that encompasses the fields of Electrical and Computer Engineering ...
  • [2012-04-12] LQ Robust Synthesis With Non-fragile Controllers: The Static State Feedback Case 

    Abdallah, Chaouki T.; Famularo, D.; Jadbabaie, A.; Dorato, Peter; Haddad, W. 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 LQH static state feedback case is ...
  • [2012-03-29] Machine learning based CDMA power control 

    Abdallah, Chaouki T.; Rohwer, Judd A.; Christodoulou, Christos G.
    This paper presents binary and multiclass machine learning techniques for CDMA power control. The power control commands are based on estimates of the signal and noise subspace eigenvalues and the signal subspace dimension. ...