Source encoding in the presence of random disturbance
Source encoding in presence of random disturbance
VECTOR↗
SEARCH · Engineering Papers
Results for “random”
Search indexed NASA NTRS and DOE OSTI research on propulsion, heat transfer, battery materials and energy systems. Follow report and document links to the original sources.
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Randomized problem of diffuse reflection
Randomized problem of diffuse reflection, and radiative transfer in presence of both scattering and absorption
PARTICLE DIFFUSION↗
The maximum response of simple beams to random excitation
Approximation method for determining maximum response of simple beams to stationary random excitation perfectly correlated in space and time
RANDOM VIBRATION↗
Investigations in space communications theory, including topics related to random processes, filtering, telemetry Semiannual status report, 1 Oct. 1966 - 31 Mar. 1967
Random processes, filtering, and telemetry problems in space communications theory
SPACE COMMUNICATION↗
Study of nonstationary random process theory Final report, 1 Jul. 1966 - 30 Apr. 1967
Nonstationary random processes in nonreal-time applications - theories for nonreal-time correlation and spectrum analysis
SPECTRAL ANALYSIS↗
Fatigue life under random loading for several power spectral shapes
Fatigue life characteristics of aluminum alloy specimens under random load to failure
RANDOM LOAD↗
Exploratory studies of liquid behavior in randomly excited tanks - Longitudinal excitation
Fluid behavior in cylindrical tank under relatively low frequency random longitudinal excitation
LIQUID FLOW↗
The biasing effect of random bit errors on binary telemetry data.
Bias due to random bit errors that occur in PCM DATA during phases of operation of telemetry data processing system
BINARY DATA↗
Coupled two-degree-of-freedom response of soft- mounted rigid body to random excitation.
Mode coupling effect on response of rigid body to random excitation analyzed, using two degree of freedom model
DYNAMIC RESPONSE↗
Structural and electromechanical interaction in the multiple-exciter technique for random vibration testing.
Random vibration testing by multiple electrodynamic exciter technique, analyzing electromechanics and structural feedback
POWER SPECTRUM↗
Random number solar cycle prediction technique.
Solar cycle prediction based upon random number technique, Fourier curve fits and power spectra analysis
SOLAR CYCLE↗
Routing in Networks with Random Topologies
We examine the problems of routing and server assignment in networks with random connectivities. In such a network the basic topology is fixed, but during each time slot and for each of tis input queues, each server (node) is either connected to or disconnected from each of its queues with some probability.
Random Topologies routing↗
An Inverse Scattering Approach to Calculation of Effective Permittivity of Random Collections of Scatterers
This paper describes the use of inverse scattering to calculate the equivalent dielectric constant of a random mixture of two-dimensional scatterers.
remote sensing random media mixing laws↗
Turbulent Fluctuation and Transport of Passive Scalars by Random Wave Fields
Turbulent transport of passive scalars by random wave fields is studied, with applications to statistics of chlorophyll concentration in the ocean.
Turbulent Fluctuation Passive Scalars Random Wave ↗
Spatial Variations of a Passive Tracer in a Random Wave Field
The effect of random wave fields on passive tracer spatial variations is studied.
Spatial Variations Passive Tracer Random Wave Fiel↗
Characterization of Friction Joints Subjected to High Levels of Random Vibration
This paper describes the test program in detail including test sample description, test procedures, and vibration test results of multiple test samples. The material pairs used in the experiment were Aluminum-Aluminum, Aluminum- Dicronite coated Aluminum, and Aluminum-Plasmadize coated Aluminum. Levels of vibration for each set of twelve samples of each material pairing were gradually increased until all samples experienced substantial displacement. Data was collected on 1) acceleration in all three axes, 2) relative static displacement between vibration runs utilizing photogrammetry techniques, and 3) surface galling and contaminant generation. This data was used to estimate the values of static friction during random vibratory motion when "stick-slip" occurs and compare these to static friction coefficients measured before and after vibration testing.
aluminum↗
Electromagnetic Scattering by Spheroidal Volumes of Discrete Random Medium
We use the superposition T-matrix method to compare the far-field scattering matrices generated by spheroidal and spherical volumes of discrete random medium having the same volume and populated by identical spherical particles. Our results fully confirm the robustness of the previously identified coherent and diffuse scattering regimes and associated optical phenomena exhibited by spherical particulate volumes and support their explanation in terms of the interference phenomenon coupled with the order-of-scattering expansion of the far-field Foldy equations. We also show that increasing non-sphericity of particulate volumes causes discernible (albeit less pronounced) optical effects in forward and backscattering directions and explain them in terms of the same interference/multiple-scattering phenomenon.
Electromagnetic scattering; Multi-particle groups;↗
T-Matrix Determination of Effective Permittivity for Three-Dimensional Dense Random Media
In this paper we present a full-wave method for determining the effective permittivity for random media in three dimensions. The type of media addresses is composed of spherical dielectric particles in a homogeneous dielectric background.
T-Matrix↗