Index Catalog // ScholarsArchive@OSU

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

Regions of Backprojection and Comet Tail Artifacts for π-Line Reconstruction Formulas in Tomography

Creator:: Hass, Ryan and Faridani, Adel
Abstract:: We explore two characteristic features of x-ray computed tomography inversion formulas in two and three dimensions that are dependent on π-lines. In such formulas the data from a given source position contribute only to the reconstruction of ƒ(x) for x in a certain region, called the region of backprojection. The...
Resource Type:: Article
Full Text:: Backprojection and Comet Tail Artifacts for π-Line Reconstruction Formulas in Tomography∗ Ryan Hass† and Adel

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
Full Text:: and committee members; Dr. Adel Faridani, Dr. William G. McDougal and Dr. Lorin Davis. Dr. Reubeen

Real-time observation of hydrogen absorption by LaNi₅ with quasi-dynamic neutron tomography

Creator:: Wood, Bradley M., Ham, Kyungmin, Hussey, Daniel S., Jacobson, David L., Faridani, Adel, Kaestner, Anders, Vajo, John J., Liu, Ping, Dobbins, Tabbetha A., and Butler, Leslie G.
Abstract:: The uptake of hydrogen by lanthanum pentanickel (LaNi₅) to form lanthanum nickel hydride (LaNi₅H₆) is followed with three-dimensional imaging by neutron tomography. The hydrogen absorption process is slower than the time needed for acquiring a single radiograph, about 10 s, but fast relative to the time to acquire a fully-sampled...
Resource Type:: Article
Full Text:: . Butler). Bradley M. Wood b, Kyungmin Hama, Daniel S. Hussey c, David L. Jacobson c, Adel Faridani d

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

A moving boundary model of calcium alginate gel formation and the estimation of diffusion and mass transfer coefficients

Creator:: Inoue, Shawna K.
Abstract:: Calcium alginate gels are widely used in the biotechnology, food, and pharmaceutical industries for cell immobilization, food additives, and controlling the release of therapeutic agents. Different gelation conditions can lead to different gel structures which affects the diffusion of solutes in gels, thus mathematical models were developed to describe diffusion...
Resource Type:: Dissertation
Full Text:: . Ayres, Dr. Adel Faridani, Dr. Henri Jansen, and Dr. William W. Warren for their helpful advice and time

A parallel numerical computation of nucleon scattering from nuclei, including full spin coupling and coulomb forces

Creator:: Mefford, Tim
Abstract:: The microscopic, momentum space, optical potential description of spin 1/2 x 1/2 scattering is extended to include the coupling of the singlet-triplet spin channels and the exact handling of the Coulomb force. Computing performance in constructing the optical potential and in solving the coupled-channels Lippmann-Schwinger equations is enhanced by parallelization...
Resource Type:: Dissertation
Full Text:: my committee members and their substitutes, Dr. Adel Faridani, Dr. David Griffiths, Dr. Victor

Technical Note: Convergence analysis of a polyenergetic SART algorithm

Creator:: Humphries, T.
Abstract:: PURPOSE: We analyze a recently proposed polyenergetic version of the simultaneous algebraic reconstruction technique (SART). This algorithm, denoted pSART, replaces the monoenergetic forward projection operation used by SART with a post-log, polyenergetic forward projection, while leaving the rest of the algorithm unchanged. While the proposed algorithm provides good results empirically,...
Resource Type:: Article
Full Text:: The author thanks Adel Faridani (Oregon State Uni- versity) and Yuan Lin (Duke University) for helpful

A numerical approach to Tamme's problem in euclidean n-space

Creator:: Adams, Patrick Guy
Resource Type:: Masters Thesis
Full Text:: of this thesis. Dr. Robert Burton provided helpful suggestions. Dr. Adel Faridani volunteered his

Structural stability effects on adsorption of bacteriophage T4 lysozyme to colloidal silica

Creator:: Tian, Minghua
Abstract:: Circular dichroism (CD) spectra were obtained for bacteriophage T4 lysozyme and three of its mutants in the presence and absence of colloidal silica nanoparticles. Mutant lysozymes were produced by substitution of the isoleucine at position 3 with tryptophan, cysteine and leucine. Each substitution resulted in an altered structural stability, quantified...
Resource Type:: Masters Thesis
Full Text:: . Special thanks to Dr. Adel Faridani for his kind help. Without the financial support from the Whitaker

ScholarsArchive@OSU

Nonperiodic sampling theorems and filter banks

Regions of Backprojection and Comet Tail Artifacts for π-Line Reconstruction Formulas in Tomography

Coupled dynamics of bouys and mooring tethers

Real-time observation of hydrogen absorption by LaNi₅ with quasi-dynamic neutron tomography

Pion-nucleon interactions in the chiral color dielectric model

A moving boundary model of calcium alginate gel formation and the estimation of diffusion and mass transfer coefficients

A parallel numerical computation of nucleon scattering from nuclei, including full spin coupling and coulomb forces

Technical Note: Convergence analysis of a polyenergetic SART algorithm

A numerical approach to Tamme's problem in euclidean n-space

Structural stability effects on adsorption of bacteriophage T4 lysozyme to colloidal silica

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