Approximation of expectation values
Approximation of expectation values by perturbation theory
PERTURBATION THEORY↗
SEARCH · Search NASA
Results for “value.”
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.
Quote a phrase for an exact phrase match. Source license links do not imply unrestricted reuse.
A technique for optimum final value control of powered flight trajectories /revision no. 1/
Least squares optimum final value control method for determining steering angle program of rocket vehicle until thrust termination
FLIGHT PATH↗
Hourly values of equatorial dst for the igy
Hourly values for magnetic storm variation for International Geophysical Year
INTERNATIONAL GEOPHYSICAL YEAR /IGY/↗
Hourly values of equatorial dst for the igy.
Table of hourly values of equatorial Dst for IGY AND comparison with ap indices
GEOMAGNETIC FIELD↗
Loss and replenishment of electrons at middle latitudes and high b values.
Loss and replenishment of trapped electrons at middle latitudes and high B values, noting electron transmission through South Atlantic anomaly
GEOMAGNETICALLY TRAPPED PARTICLE↗
Diffusion technique stabilizes resistor values
Reduction of the contact resistance stabilizes the values, over a broad temperature range, of resistors used in linear integrated circuits. This reduction is accomplished by p-plus diffusion under the alloyed aluminum contacts.
Gallagher, R. C.↗
Modified hydraulic braking system limits angular deceleration to safe values
Conventional spring actuated, hydraulically released, fail-safe disk braking system is modified to control the angular deceleration of a massive antenna. The hydraulic system provides an immediate preset pressure to the spring-loaded brake shoes and holds it at this value to decelerate the antenna at the desired rate.
Briggs, R. S.↗
Exposure Value /EV/ system expanded to include filter factors and transmittance
Application of the exposure value system requires that the system be extended to high brightness level and expanded to include filter factors. A minimum of four photographic factors are involved in the evaluation of an exposure which, when determined from tables of 1-stop interval, could introduce noticeable error.
Lindsey, W. F.↗
Arc quenching at critical dc current values
Electric arc quenching at critical direct current values for circuits with inductive load
DIRECT CURRENT /DC/↗
Fortran IV computer program for the evaluation of natural frequencies and unstable values of the thrust frequency for a free- free, circular cylindrical shell subjected to a gimbaled, periodically-varying end thrust
Fortran IV computer program for evaluation of natural frequencies and unstable values of thrust frequency for free-free circular cylindrical shell subjected to end thrust
FORTRAN↗
On the Number of L2 Solutions of - y plus Q/t/y Equals Lambda y Where Q/t/ Is Complex Valued
Operator solutions for complex valued second order differential equation
DIFFERENTIAL OPERATOR↗
Fortran IV computer program for the evaluation of natural frequencies and unstable values of the thrust frequency for a circular cylindrical shell subjected to a gimbaled periodically-varying end thrust
Fortran IV computer program to evaluate natural frequencies and unstable values of thrust frequency for circular cylindrical shell subjected to periodically varying end thrust
NATURAL FREQUENCY↗
Effects of quantity, quality, change of diet and nutritional value of food
Effects of quantity, quality, change of diet, and nutritional value of food on growth, lifespan, and reproduction of marine invertebrates
LIFESPAN↗
Improvement of uncoupled Hartree-Fock expectation values for physical properties.
Improving uncoupled Hartree-Fock expectation values for atomic and molecular properties
HARTREE-FOCK CALCULATION↗
Computer optimization program finds values for several independent variables that minimize a dependent variable
Computer program finds values of independent variables which minimize the dependent variable. This optimization program has been used on the F-1 and J-2 engine programs to establish minimum film coolant requirements.
Warech, E. J.↗
Computer program generates averaged value data tapes
Computer program generates a magnetic output tape containing time and averaged data values of a specified number of major frames over a specified time interval. A decommutation system is used to acquire the raw data, which is then reformatted and averaged.
Watkins, F. L.↗
Critical examination of equations for atmospheric number-density calculations - Computed values compared with observations
Critical examination of equations for atmospheric number-density calculations, and computed values compared with observations
ATMOSPHERIC DENSITY↗