Now showing items 1-10 of 33
On The Free-Energy And Stability Of Non-Linear Fluids
(AIP Publishing, 1982)
For any incompressible fluid whose stress is a frame indifferent function of the velocity gradient and the material time derivative of the velocity gradient, i.e., for any Rivlin_Ericksen fluid of complexity 2, we show ...
Closed-form approximations and series representations for partially saturated ocean acoustic processes
(Acoustical Society of America, 1988-04-01)
An approximate, closed-form expression for the value of the integral encountered in the calculation of the probability density function (PDF) of the envelope of a partially saturated ocean acoustic process is obtained. ...
Two-Dimensional Textural Edge Detection Using Ω-Gaussian Filter
(Optical Society of America, 1986-11-01)
A textural edge detection frequency domain filter is proposed to locate the boundary between two textural domains modulated by different spatial frequencies. This filter is derived from a zero-order prolate spheroidal ...
Incoherent Spatial-Filtering with A Scanning Heterodyne System
(Optical Society of America, 1984-01-01)
Imaging systems with two pupils in the receiving optics have been used to synthesize bipolar point spread functions in incoherent image processing. We describe a two-pupil system using a scanning illumination technique and ...
Rheological Properties Of Copolyester Liquid-Crystalline Melts .1. Capillary Rheometry
(AIP Publishing, 1981)
Rheological properties of two copolyesters which exhibit liquid crystalline behavior in the melt state were determined using an Instron capillary rheometer. The two polymer melts with nematic liquid crystalline order ...
Initial Results Of A Flow Birefringence Study Of The Hole Pressure For Polymer Melts
(AIP Publishing, 1984)
Comparison Of Flow Birefringence Data with A Numerical-Simulation Of The Hole Pressure
(AIP Publishing, 1988-08-01)
The penalty_Galerkin finite_element method is used to simulate the flow of a polystyrene melt over a rectangular slot placed perpendicular to the flow direction. The White_Metzner constitutive equation is used with a Carreau ...
Response to 'Comment on Linear inviscid wave propagation in a waveguide having a single boundary discontinuity: Part II: Application [J. Acoust. Soc. Am. 75, 356-362 (1984)]'
(Acoustical Society of America, 1986-10-01)
This paper addresses the comments of Dr. Bruggeman and Dr. van de Wetering. The source of the error present in the paper entitled "Linear inviscid wave propagation in a waveguide having a single boundary discontinuity: ...
A transport-theoretic analysis of pulse propagation through ocean sediments
(Acoustical Society of America, 1982-09-01)
The reflection of pulsed acoustic plane waves from ocean sedimentary layers is studied using a stochastic transport theory originally introduced by Barabanenkov et. al. [Izv. Vyssh. Uchebn. Zaved., Radiofiz 15, 1852 (1972)]. ...
Linear inviscid wave propagation in a waveguide having a single boundary discontinuity: Part I: Theory
(Acoustical Society of America, 1984-02-01)
An examination of wave propagation in waveguides of rectangular cross section having a single boundary discontinuity is presented. Special attention is paid to waveguides with heights that are small compared to an acoustic ...