Fast Catalog Matching for Improved Posteriors via Constrained Clustering
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Jacob Feitelberg↗
SEARCH · Engineering Papers
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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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V-slotted screw head and matching driving tool facilitate insertion and removal of screw fasteners
A V-slotted designed screw and a screwdriver with a V-shaped tang facilitate driving the screw into difficult locations and minimize axial forces thus avoiding damage to the screw.
Handley, M. G.↗
Methods of Confusion in a Pattern Matching Task
Pattern degradation influence on human responses in pattern perception studies
PSYCHOPHYSIOLOGY↗
An investigative study of a spectrum-matching imaging system Final report
Evaluation system for classification of remote objects and materials identified by solar and thermal radiation emission
SOLAR RADIATION↗
Size matching accuracy under very high target luminances.
Psychophysical study of irradiation phenomena effects on target size perception by investigating luminance, fixation position and corrections
VISUAL PERCEPTION↗
Investigation of spectrum-matching sensing in agriculture, volume 1 Semiannual report, Dec. 1, 1965 - Sep. 30, 1966
Data acquisition and analysis of crop signatures obtained by combined spectrometer and optical- mechanical scanners in agricultural survey
Polcyn, F. C.↗
Investigations of spectrum matching sensing in agriculture, volume 1 Final report, May 1964 - Mar. 1967
Multispectral sensing for automatic recognition in soil science
Polcyn, F. C.↗
Ratio matching of half-bridge weldable strain gages, computer program
Computer program reduces the unbalance of weldable half-bridge strain gage installations. The program calculates the two resistance ratios of each half-bridge gage, outputting a table of gages ranked according to resistance ratio. The tabulation forms a convenient record of gage characteristics.
Anderson, K. F.↗
Digital matched filters for detecting Gaussian signals in Gaussian noise
Digital filters for detecting random signals in random noise
Henderson, T. L.↗
The simulator to match the transports to come.
Flight simulator with large lateral motion for large and supersonic transport aircraft, emphasizing reproduction of cockpit accelerations due to supersonic engine thrust loss
Dusterberry, J. C.↗
Unsteady MHD flow in arbitrary ducts by point-matching method.
Unsteady MHD conducting fluid flow in arbitrary ducts under transverse magnetic field, studying effects of pressure gradient impulsive change
Jeng, D. R.↗
Constant current load matches impedances of electronic components
Constant current load with negative resistance characteristics actively compensates for impedance variations in circuit components. Through a current-voltage balancing operation the internal impedance of the diodes is maintained at a constant value. This constant current load circuit can be used in simple telemetry systems.
Alexander, R. M.↗
Data-matched filter
After amplification and normalization, incoming data bits are fed, alternately, to pair of integrators. While one integrator is operating, content of other is on hold, sample, and dump. Clock derived in bit-timing extractor times and controls integrators. Frequency of clock is one-half data rate.
Scheinberg, N. R.↗
The calculation of efficient high precision orbits by optimum matching of the formulation and numerical integrator
The development of improved computer algorithms is considered for calculating earth satellite orbital trajectories by optimum selection of the analytical method that minimizes the number of perturbative acceleration computations for a given accuracy. A variation of parameter algorithm considering the equation of motion for a satellite proved superior for the geosynchronous orbit.
Velez, C. E.↗
An automated method for determining the flutter velocity and the matched point.
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Bhatia, K. G.↗
Third harmonic generation in phase-matched alkali metal vapors
We report improvements in conversion efficiency for third harmonic generation in sodium and rubidium vapor. 30-psec pulses of radiation at 1.064 micron have been converted to 0.3547 micron with an energy conversion efficiency of 10%. Factors limiting conversion efficiency are discussed.
Bloom, D. M.↗
Match-mold process for foam insulation
Process, using fast-setting putty-type thixotropic epoxy material, eliminates need for leakproof enclosures. Method reduces cure time from 15 to 4 hours. Epoxy masters are stronger and do not require special coating for storage. Manufacturers of form-fitted insulation or packaging forms will find this process to be of interest.
Rumenapp, H. E.↗
Inlet-engine matching for SCAR including application of a bicone variable geometry inlet
Airflow characteristics of variable cycle engines (VCE) designed for Mach 2.32 can have transonic airflow requirements as high as 1.6 times the cruise airflow. This is a formidable requirement for conventional, high performance, axisymmetric, translating centerbody mixed compression inlets. An alternate inlet is defined, where the second cone of a two cone center body collapses to the initial cone angle to provide a large off-design airflow capability, and incorporates modest centerbody translation to minimize spillage drag. Estimates of transonic spillage drag are competitive with those of conventional translating centerbody inlets. The inlet's cruise performance exhibits very low bleed requirements with good recovery and high angle of attack capability.
Wasserbauer, J. F.↗