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  • Decision-making Tool to Select Construction Contractors Based on Safety Performance

    Creator:
    Al-Saffar, Ola T.
    Abstract:
    The safety of workers in the construction industry is a big concern because of the high number of fatalities and injuries that occur in the industry. Selecting contractors based on safety performance can improve safety and reduce the risks of injuries. However, owners commonly choose contractors based on competitive bidding...
    Resource Type:
    Masters Thesis
    Full Text:
    AN ABSTRACT OF THE THESIS OF Ola T. Al-Saffar for the

  • On the lyapunov-based approach to robustness bounds

    Creator:
    Jo, Jang Hyen
    Abstract:
    The objective of this investigation is the development of improved techniques for the estimation of robustness for dynamic systems with structured uncertainties, a problem which was approached by application of the Lyapunov direct method. This thesis considers the sign properties of the Lyapunov function derivative integrated along finite intervals of...
    Resource Type:
    Dissertation
    Full Text:
    a given system is al- ways the first and basic step in system analysis. If a system is disturbed

  • Robust controller design for robotic manipulators with saturation

    Creator:
    Liang, Zuyang
    Abstract:
    The development of modern industries calls for the robotic manipulators with high speed and accurate tracking performance. Many authors have paid attention to robust control of robotic manipulators; however, only few authors have also considered the control problem of manipulators with power limitation. In this dissertation, the robotic manipulator is...
    Resource Type:
    Dissertation
    Full Text:
    n x 1 vector representing joint positions, velocities and accelerations u(t) n x 1 vector of

  • Robustness estimation via integral liapunov functions

    Creator:
    Alam, Arshad
    Abstract:
    An investigation focusing on methods of estimation of robustness of nominally linear dynamic systems with unstructured uncertainties was performed. The algorithm proposed involves the consideration of an associated system, selection, and subsequent development, of Liapunov function candidate and integration of their derivatives along the solution trajectory. A nominally linear multi-dimensional...
    Resource Type:
    Masters Thesis
    Full Text:
    , unstructured perturbation. We describe the system as * = Attx + e where x E Rn and e = e(t,x) , e(t,0) = 0

  • Robustness of uncertain systems : globally optimal Lyapunov function

    Creator:
    Ahmadkhanlou, Fariborz
    Abstract:
    The Lyapunov direct method is utilized to determine the robustness bounds for nonlinear, time-variant uncertainies p[subscript i]. Determination of the robustness bounds consists of two principal steps: (i) generation of a Lyapunov function and (ii) determination of the bounds based on the generated Lyapunov function. Presently in robustness investigations, a...
    Resource Type:
    Dissertation
    Full Text:
    gradient method, and the Zubov method. Based upon the Lyapunov direct method, Siljak [11] and Patel et al

  • Kinematics of arthropod legs : modeling and measurement

    Creator:
    Albright, Stephen L.
    Abstract:
    This thesis presents a method for determining the kinematic geometry of arthropod legs. A kinematic description makes possible the analysis of arthropod leg motion, as a prelude to investigating how various arthropod species are able to negotiate diverse terrains. Such knowledge will aid in design of legged vehicles. The focus...
    Resource Type:
    Dissertation
    Full Text:
    parallel joint axes in D-H model. 15 joint i zi-1 al joint i +1 / Figure 2.3. Four-parameter model

  • Testing for location after transformation to normality

    Creator:
    Halawa, Adel Mahmoud
    Abstract:
    In the problem of testing the median using a random sample from a certain distribution, and if no other parametric family is suggested, the t-test is known to be the optimal procedure when this distribution is normal. If the sample appears to be non-normal, one has the choice either to...
    Resource Type:
    Dissertation
    Full Text:
    -normal model Al = 1/4 A2 = 1/2 n = 20 109 5.28 Frequency and cumulative distributions of the t-statistic

  • Fisheries Development and Management – some Reflections on Vietnam

    Creator:
    Flaaten, Ola
    Abstract:
    IIFET 2008 Vietnam keynote presentation. Power Point presentation by Professor Ola Flaaten from The Norwegian College of Fishery Science, University of Tromso.
    Resource Type:
    Conference Proceeding
    Full Text:
    2008 Vietnam Proceedings FISHERIES DEVELOPMENT AND MANAGEMENT – SOME REFLECTIONS ON VIETNAM OLA

  • FlaatenPresentation.pdf

    Creator:
    Flaaten, Ola
    Abstract:
    The relationship between annual growth in the catches of fishing nations and the quality of the institutions of those nations is analyzed. Catch volumes are used as a proxy for development, since economic performance indicators based on a common set of definitions do not exist. 49 major fishing nations were...
    Full Text:
    biennial conference Dar Es Salaam, Tanzania, 16-20 July 2012 Ola Flaaten, Professor The Norwegian

  • The role of costimulation and adjuvants in the development of T cell effector and memory responses

    Creator:
    Maxwell, Joseph R.
    Abstract:
    T cells are one of the key cells in the immune system. Although they are not the first line of defense against a pathogen, their functions can greatly enhance the phagocytosis and destruction of pathogens as well as the development of antibody responses. Furthermore, even when responding T cells have...
    Resource Type:
    Dissertation
    Full Text:
    Costimulation and Adjuvants in the Development of T Cell Effector and Memory Responses. Abstract approved