Sensing of meteorological variables by laser probe techniques Semiannual report, 1 Aug. 1966 - 31 Jan. 1967

Optical radar sensing of meteorological variables in atmosphere and ionospher

Sensing of meteorological variables by laser probe techniques Semiannual report, 1 Feb. - 31 Jul. 1968

Spectrum of coherent light scattered from water jet with uniform spherical particle

Sensing of Meteorological Variables by Laser Probe Techniques Semiannual Report, 1 Aug. 1965 - 31 Jan. 1966

Sensing of meteorological variables by laser probe technique

Investigations of dust in the upper atmosphere by optical radar Final report, 1 Jul. 1966 - 31 Jul. 1968

Upper atmospheric dust investigations using optical radar technique

Persistent memory in athermal systems in deformable energy landscapes

We show that memory can be encoded in a model amorphous solid subjected to athermal oscillatory shear deformations, and in an analogous spin model with disordered interactions, sharing the feature of a deformable energy landscape. When these systems are subjected to oscillatory shear deformation, they retain memory of the deformation amplitude imposed in the training phase, when the amplitude is below a "localization" threshold. Remarkably, multiple, persistent, memories can be stored using such an athermal, noise-free, protocol. The possibility of such memory is shown to be linked to the presence of plastic deformations and associated limit cycles traversed by the system, which exhibit avalanche statistics also seen in related contexts.Comment: 5 pages, 4 figure

Geophysical Research

Contains reports on one research project.National Aeronautics and Space Administration (Grant NGR-22-009-131)National Aeronautics and Space Administration (Grant NGR-22-009-114

Geophysical Research

Contains research objectives.National Aeronautics and Space Administration (Grant NGR-22-009-131)National Aeronautics and Space Administration (Grant NGR-22-009-114)Joint Services Electronics Programs (U. S. Army, U.S. Navy, and U.S. Air Force) under Contract DA 28-043-AMC-02536(E

Sensing of Meteorological Variables by Laser Probe Semiannual Report, 1 Feb. - 31 Jul. 1966

Meteorological variable sensing by laser probe

Geophysical Research

Contains report on one research project.National Aeronautics and Space Administration (Grant NGR-22-009-131)National Aeronautics and Space Administration (Grant NGR-22-009-(114))Joint Services Electronics Programs (U.S. Army, U.S. Navy, and U.S. Air Force) under Contract DA 28-043-AMC-02536(E

Geophysics

Contains research objectives and reports on two research projects.National Aeronautics and Space Administration (Grant NsG-419