Now showing items 21-30 of 157
Nonlinear modulation of TM waves in a circular waveguide
(American Institute of Physics, 1976)
The method of multiple scales is used to derive a nonlinear Schrödinger equation for the temporal and spatial amplitude and phase modulations of TM waves in a perfectly conducting guide containing a nonlinear isotropic ...
Simulation of multicorrelated random processes using the FFT algorithm
(Acoustical Society of America, 1975)
A technique for the digital simulation of multicorrelated Gaussian random processes is described. This technique is based upon generating discrete frequency functions which correspond to the Fourier transform of the desired ...
A File Definition Facility for File Structures
(Department of Computer Science, Virginia Polytechnic Institute & State University, 1974), CS74001-R
This paper describes a file definition facility (FDF) for defining files as graph structures. The structure of the file is explicitly declared in the file definition. Primitive functions(from graph theory), operators, and ...
Secondary Instability in Boundary-Layer Flows
(AIP Publishing, 1979)
The stability of a secondary Tollmien–Schlichting wave, whose wavenumber and frequency are nearly one half those of a fundamental Tollmien–Schlichting instability wave, is analyzed using the method of multiple scales. Under ...
Simple Model of Convection-Diffusion Coupling Near Flames
(AIP Publishing, 1976)
A Couette-flame sheet flow model is analyzed to study combined indraft convection_thermal diffusion effects on oxygen distribution near intense fires. These effects enhance the local oxygen concentration, thermal diffusion ...
The Requirements for Effective Hardware Description Languages
(Department of Computer Science, Virginia Polytechnic Institute & State University, 1975), CS75011-R
The design of hardware description languages (HDL's) is considered with respect to their structural and functional properties rather than their syntactic forms. The contents of an idealized HDL are contrasted with those ...
Nonorthogonal Transforms for Logical Design
(Department of Computer Science, Virginia Polytechnic Institute & State University, 1977), CS77006-R
No abstract available.
Contextual Boundary Formation by Scan Line Matching
(Department of Computer Science, Virginia Polytechnic Institute & State University, 1979), CS79009-R
In this paper an algorithm is given for generating linked edge boundaries between adjacent regions of different gray levels. In contrast with peak following algorithms, edges are treated as variable width regions, and ...
The Relationship Between the Multiplicative And Mixed Generators Modulo 2^b
(Department of Computer Science, Virginia Polytechnic Institute & State University, 1974), CS74012-R
MacLaren and Marsaglia  comment that their test results suggest that the multiplicative generator performs better than the mixed generator. We attempt to answer the above question by showing that for any sequence of ...
Comparison Of The Rheological Properties Of Concentrated-Solutions Of A Rodlike And A Flexible Chain Polyamide
(AIP Publishing, 1979)
The steady state shear rheological properties of solutions of a rodlike polyamide, poly_p_phenyleneterephthalamide (PPT), in 100% sulfuric acid have been compared with those of solutions of a flexible chain polyamide, nylon ...