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  • Nonuniform sampling problems in computed tomography

    Creator:
    Gratton, Larry A.
    Abstract:
    Two problems involving high-resolution reconstruction from nonuniformly sampled data in x-ray computed tomography are addressed. A technique based on the theorem for sampling on unions of shifted lattices is introduced which exploits the symmetry property in two-dimensional fan beam computed tomography and permits the reconstruction of images with twice the...
    Resource Type:
    Dissertation
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    : _______________________ _ Adel Faridani Two problems involving high-resolution reconstruction from nonuniformly

  • π-line reconstruction formulas in computed tomography

    Creator:
    Hass, Ryan Andrew
    Abstract:
    X-ray computed tomography is a noninvasive imaging modality capable of reconstructing exact density values of 3D objects. Computed tomography machines are deployed across the world to provide doctors with an image that reveals more detail than a standard x-ray image. We investigate algorithms based on exact computed tomography reconstruction formulas...
    Resource Type:
    Dissertation
    Full Text:
    -Line Reconstruction Formulas in Computed Tomography Abstract approved: Adel Faridani X-ray computed

  • Nonuniform Sampling Of Band-limited Functions

    Creator:
    Al-Hammali, Hussain Y.
    Abstract:
    In this thesis, we will study certain generalizations of the classical Shannon Sampling Theorem, which allows for the reconstruction of a pi-band-limited, square-integrable function from its samples on the integers. J. R. Higgins provided a generalization where the integers can be perturbed by less than 1/4, which includes nonuniform and...
    Resource Type:
    Dissertation
    Full Text:
    . Title: Nonuniform Sampling Of Band-limited Functions Abstract approved: Adel Faridani In this thesis

  • Nonperiodic sampling theorems and filter banks

    Creator:
    Behmard, Hamid R.
    Abstract:
    Sampling theorems provide exact interpolation formulas for bandlimited functions. They play a fundamental role in signal processing. A function is called bandlimited if its Fourier transform vanishes outside a compact set. A generalized sampling theorem in the framework of locally compact Abelian groups is presented. Sampling sets are finite unions...
    Resource Type:
    Dissertation

  • Coupled dynamics of bouys and mooring tethers

    Creator:
    Idris, Krisnaldi
    Abstract:
    Time-domain models were developed to predict the response of a tethered buoy subject to hydrodynamic loadings. A coupled analysis of the interaction of a buoy and its mooring is included and three-dimensional response is assumed. External loadings include hydrodynamic forces, tethers tensions, wind loadings and the weight of both cable...
    Resource Type:
    Dissertation
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    and committee members; Dr. Adel Faridani, Dr. William G. McDougal and Dr. Lorin Davis. Dr. Reubeen

  • Pion-nucleon interactions in the chiral color dielectric model

    Creator:
    Lu, Dinghui
    Resource Type:
    Dissertation
    Full Text:
    highly appreciated. I thank Dr. Rubin Landau, Dr. Adel Faridani, Dr. Albert Stetz, Dr. Victor Madsen

  • Modeling and analysis of spur structure of digital-to-time conversion based frequency synthesizers

    Creator:
    Talwalkar, Sumit A.
    Abstract:
    Frequency synthesizers are critical components of all communication systems. This thesis considers the issue of undesirable frequency spurs of a relatively recent type of frequency synthesis architecture called digital-to-time conversion (DTC). The DTC-based frequency synthesis architecture has important performance benefits over older frequency synthesizers, such as fast frequency switching, large...
    Resource Type:
    Dissertation
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    committee members Drs. Liu, Raich, Faridani and the GCRs, first Dr. Bokil and then, Dr. Kovchegov gave

  • Ruin Problems with Risky Investments

    Creator:
    Loke, Sooie-Hoe
    Abstract:
    In this dissertation, we study two risk models. First, we consider the dual risk process which models the surplus of a company that incurs expenses at a constant rate and earns random positive gains at random times. When the surplus is invested in a risky asset following a geometric Brownian...
    Resource Type:
    Dissertation
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    research results. She inspired me to work on Chapter 3 of this dissertation. I want to thank Dr. Adel

  • Modeling studies of ocean circulation using inverse methods and bifurcation theory

    Creator:
    Vernieres, Guillaume
    Abstract:
    We present a study of the ocean circulation using state of the art numerical and data assimilation techniques. The second chapter of the thesis presents the development and application of generalized inversion to a simple dynamical model of Lake Kinneret. The intent was to develop the necessary tools to implement...
    Resource Type:
    Dissertation
    Full Text:
    opportunity to work with him. Thanks to the members of my committee, James Richman, Adel Faridani, Ted Strub

  • Multiscale analysis of saturated flow in a porous medium with an adjacent thin channel

    Creator:
    Morales, Fernando A.
    Abstract:
    This thesis contains three parts addressing the asymptotic analysis of fluid flow through fully saturated porous medium in the presence of an adjacent thin channel. In the first part the problem is modeled by Darcy's law in both the porous medium and in the channel. The permeability in the channel...
    Resource Type:
    Dissertation
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    Peszyn- ska, David Finch, Adel Faridani, and Harry Yeh for their helpful comments and suggestions at