Effects of surface randomness of radar backscatter from a spherical surface
Approximation solution to integral expressions of radar backscatter from distant rough surfaces for lunar surface property determination
ELECTROMAGNETIC WAVE↗
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Results for “Approximation methods”
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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Stagnation-point solutions for inviscid, radiating shock layers
Approximate stagnation point solutions to radiant energy effects on hot shock layer around blunt bodies travelling at 70 km/sec
BLUNT BODY↗
Properties of the clouds of Venus
Approximation formula describing monochromatic transmission, reflection, and absorption of Venus cloud layer
APPROXIMATION METHOD↗
Theory of pion absorption on light nuclei
Impulse approximation for pion absorption on light nuclei with emission of fast nucleons
PION↗
A shell-model calculation of the quasi elastic scattering of protons from complex nuclei
Plane wave impulse approximation for deriving momentum distribution for nucleon in atomic nucleus
APPROXIMATION METHOD↗
Higher-order Stationary Phase Approximations in Semiclassical Scattering
Stationary phase approximations on differential cross section expansion for elastic particle scattering mechanics
THEORETICAL PHYSICS↗
A rigorous derivation of second-approximation theory of elastic shells Technical report no. 5
Derivation of second approximation shell theory
SHELL THEORY↗
An orthonormalization procedure for multivariable function approximation
Orthonormalization procedure for multivariable function approximation
MATHEMATICAL TABLE↗
Approximate solution of second-order boundary- layer equations.
Dorodnitzyn approximate solution method applied to Crocco forms of first and second order incompressible two-dimensional boundary layer equations
SHEARING STRESS↗
Magnetospheric free-boundary problem in axial symmetry.
Approximate solution of magnetospheric free boundary for steady state interaction between field-free streaming plasma and magnetic dipole
FREE BOUNDARY↗
Lunar crater distribution from the Ranger 7 photographs.
Lunar crater distribution measurement from Ranger VII photographic data analysis, deriving approximate expression for secondary distribution
LUNAR EXPLORATION↗
Solutions of differential equations by evaluations of functions.
Runge-Kutta fourth order formula used to obtain approximate solution to differential equations
RUNGE-KUTTA INTEGRATION↗
Approximation of expectation values.
Approximation of expectation values for nonenergy properties via perturbation theory, obtaining values for molecular polarizability
POLARIZATION CHARACTERISTICS↗
The design of high performance active RC BAND-PASS filters.
High performance active RC band pass filter design providing for independent adjustment of poles
RC NETWORK↗
First-occurrence time of high-level crossings in a continuous random process.
Statistical distribution of first occurrence and recurrence of crossing of given level in continuous random process determined, using approximate forms and exponential distribution
RANDOM PROCESS↗
Molecular rainbows for the 12-6 potential in the airy approximation.
Numerical values describing molecular rainbow scattering in Airy approximation for 12-6 potential
SCATTERING CROSS SECTION↗
Coupling constants of spin-2 mesons with two pseudoscalar mesons.
Input and output coupling constants of spin-2 mesons with two pseudo-scalar mesons obtained by producing resonances at experimentally observed positions
INTEGRAL EQUATION↗