Now showing items 1-10 of 158
Beam Propagation in Focusing Media with Random Axis Misalignments: Second-Order And Higher-Order Moments
(AIP Publishing, 1978-12-01)
A novel statistical technique which allows the asymptotic evaluation of second_ and higher_order averaged observables related to the stochastic complex parabolic equation is applied to the problem of beam propagation in a ...
On Making Bairstow's Method Work
(Department of Computer Science, Virginia Polytechnic Institute & State University, 1974), CS74003-R
No abstract available.
An Artificial Intelligence Approach to the Symbolic Factorization of Multivariable Polynomials
(Department of Computer Science, Virginia Polytechnic Institute & State University, 1974), CS74019-R
A new heuristic factorization scheme that uses learning to improve the efficiency of determining the symbolic factorization of multivariable polynomials with integer coefficients and an arbitrary number of variables and ...
Adiabatic Following in Two-Photon Transition
(American Physical Society, 1977-03-01)
The coherent interaction of two smoothly varying, near-resonant, two-photon pulses with a three-level system can be described by "two-photon damped Bloch equations" which are analogous to those for a one-photon transition ...
Compressible Boundary Layers Over Wavy Walls
(AIP Publishing, 1976)
An analysis is presented of compressible viscous flows past wavy walls without restricting the mean flow to be linear in the disturbance layer. Linearization of the compressible disturbance equations results in a system ...
Nonparallel Stability of Boundary-Layer Flows
(AIP Publishing, 1975)
The spatial stability of two‐dimensional incompressible boundary‐layer flows is analyzed using the method of multiple scales. The analysis takes into account the streamwise variations of the mean flow, the disturbance ...
One-Dimensional Edge Detection and Representation
(Department of Computer Science, Virginia Polytechnic Institute & State University, 1979), CS79007-R
One reason no single edge detector has been found that satisfies the requirements of a wide range of image analysis applications is that existing edge detectors often produce unjustifiable interpretations of edge regions ...
Principle of Optimal Page Replacement and the LRU Stack Model
(Department of Computer Science, Virginia Polytechnic Institute & State University, 1974), CS74023-R
Program reference strings generated by the LRU stack model are considered, and expressions for the expected times to next reference for all pages occupying different LRU stack positions are derived. Using these expressions, ...
Effect of Relaxation on Self-Induced Transparency
(American Physical Society, 1978-09-01)
We derive an equation of motion of the Bloch-vector tipping angle and the area theorem in the presence of relaxation. We derive relaxation-dependent shifts in the equilibrium nπ areas. Part of these shifts depends on a ...
Parallel_plate waveguide with sinusoidally perturbed boundaries
(American Institute of Physics, 1974)
The method of multiple scales is used to obtain a uniformly valid asymptotic expansion for the propagation of TM modes on a parallel_plate waveguide with perfectly conducting boundary surfaces that are sinusoidally perturbed ...