Index Catalog // ScholarsArchive@OSU

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:: Technical Note: Convergence analysis of a

High-Order Staggered Finite Difference Methods for Maxwell's Equations in Dispersive Media

Creator:: Bokil, Vrushali A. and Gibson, Nathan L.
Abstract:: We study the stability properties of, and the phase error present in, several higher order (in space) staggered finite difference schemes for Maxwell's equations coupled with a Debye or Lorentz polarization model. We present a novel expansion of the symbol of finite difference approximations, of arbitrary (even) order, of the...
Resource Type:: Technical Report
Full Text:: are interested in dielectrics with no free charges. Perfect conducting boundary conditions (2.1d) are

Wood handbook : wood as an engineering material

Creator:: Forest Products Laboratory (U.S.)
Abstract:: Summarizes information on wood as an engineering material. Presents properties of wood and wood-based products of particular concern to the architect and engineer. Includes discussion of designing with wood and wood-based products along with some pertinent uses.
Resource Type:: Technical Report
Full Text:: Agriculture Forest Service Forest Products Laboratory General Technical Report FPL–GTR–190 Centennial

Relationship Between Wildfire, Salvage Logging, and Occupancy of Nesting Territories by Northern Spotted Owls

Creator:: Clark, Darren A., Anthony, Robert G., and Andrews, Lawrence S.
Abstract:: The northern spotted owl (Strix occidentalis caurina) is one of the most intensively studied raptors in the world; however, little is known about the impacts of wildfire on the subspecies and how they use recently burned areas. Three large-scale wildfires in southwest Oregon provided an opportunity to investigate the short-term...
Resource Type:: Article
Full Text:: elevations ranging from 900 to 2,000 m. No large-scale wildfires occurred within the study area from 1992 to

Do Mutation Reduction Strategies Matter?

Creator:: Gopinath, Rahul, Alipour, Amin, Ahmed, Iftekhar, Jensen, Carlos, Groce, Alex, and Oregon State University. Department of Computer Science
Resource Type:: Technical Report
Full Text:: . Note that subsumption is not a symmertical relation. No operators come close to full subsumption. This

Quantum Interchange Walk as a Unifying Approach

Creator:: Dimcovic, Zlatko and Kovchegov, Yevgeniy
Abstract:: We construct a quantum interchange walk, related to classical walks with memory. This gives us a coinless discrete walk, while the origin in classical walks with memory offers the promise of use of existing tools from classical memoried walks. This approach readily reproduces all standard approaches. We briefly discuss its...
Resource Type:: Technical Report
Full Text:: . Note that, in this section only, we use the fairly standard probabilistic notation, of operators acting

An Analysis of the Coexistence of Three Competing Species with a Shared Pathogen

Creator:: Bokil, Vrushali A. and Leung, Margaret-Rose
Abstract:: We consider an SI model of three competing species that are all affected by a single pathogen which is transmitted directly via mass action. The total population sizes of the three species satisfy a three-dimensional Lotka-Volterra competition model. We address the interaction between competition and disease dynamics, and show that...
Resource Type:: Technical Report
Full Text:: always fatal to red squirrels, who have little to no natural resistance to the disease [11]. SQPV

Coexistence of Competing Species with a Directly Transmitted Pathogen

Creator:: Bokil, V. A. and Manore, C. A.
Abstract:: In this paper we consider models of two competing species that are both affected by a pathogen which is transmitted directly. We consider both mass action as well as frequency incidence models of disease spread, and Lotka-Volterra competition. Our aim is to address the interaction between competition and disease dynamics....
Resource Type:: Technical Report
Full Text:: two competitive species using frequency incidence disease transmission with no disease related deaths

Identification via completeness for discrete covariates and orthogonal polynomials

Creator:: Kovchegov, Yevgeniy and Yildiz, Nese
Abstract:: We solve a class of identification problems for nonparametric and semiparametric models when the endogenous covariate is discrete with unbounded support. Then we proceed with an approach that resolves a polynomial basis problem for the above class of discrete distributions, and for the distributions given in the sufficient condition for...
Resource Type:: Research Paper
Full Text:: completeness when the endogenous covariate is discrete with unbounded support. Note that the case of discrete

Mixing times via super-fast coupling

Creator:: Burton, Robert M., Jr. and Kovchegov, Yevgeniy
Abstract:: For the probabilistic model of shuffling by random transpositions we provide a coupling construction with the expected coupling time of order C*n*log(n), where C is a moderate constant. We enlarge the methodology of coupling by including intuitive non-Markovian coupling rules. We discuss why a typical Markovian coupling is not always...
Resource Type:: Research Paper
Full Text:: possible and to get precise rates one would use non-Markovian coupling because no other kind would work

ScholarsArchive@OSU

Technical Note: Convergence analysis of a polyenergetic SART algorithm

High-Order Staggered Finite Difference Methods for Maxwell's Equations in Dispersive Media

Wood handbook : wood as an engineering material

Relationship Between Wildfire, Salvage Logging, and Occupancy of Nesting Territories by Northern Spotted Owls

Do Mutation Reduction Strategies Matter?

Quantum Interchange Walk as a Unifying Approach

An Analysis of the Coexistence of Three Competing Species with a Shared Pathogen

Coexistence of Competing Species with a Directly Transmitted Pathogen

Identification via completeness for discrete covariates and orthogonal polynomials

Mixing times via super-fast coupling

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