On the construction of discrete approximations to linear differential expressions
Algorithm for generating discrete approximations in terms of ordinates for linear differential expressions
DIFFERENTIAL EQUATION↗
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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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Charge transfer in the classical binary encounter approximation
Charge transfer in classical binary encounter approximation
CHARGE TRANSFER↗
Periodic and almost periodic trajectories in cislunar space Final report
Periodic and almost periodic trajectories in cislunar space - techniques for determining behavior of dynamical systems of known periodic solutions, and space flight safety concept
TRAJECTORY ANALYSIS↗
Optimal control of distributed parameter systems using multilevel techniques
Optimal control of distributed parameter systems using multilevel techniques
APPROXIMATION METHOD↗
Determination of momenta and forces acting on bodies of revolution in a free- molecular stream and in a luminous flux
Approximation of forces and momenta acting on axisymmetric bodies rotating in free-molecular stream and in luminous flux
SATELLITE ROTATION↗
Optimal computing forms for the two-body C and S series
Approximations for C and S functions and their derivative functions for application to two-body problem
COMPUTATION↗
Functions of relaxed controls
Mathematical control theory problems involving solutions of certain partial differential equations, nonadditive set functions, or other functionals - approximation and existence theorems
FUNCTIONAL ANALYSIS↗
Saturn guidance concepts
Four approximations to closed loop steering function in application to spacecraft guidance
APPROXIMATION METHOD↗
Numerical integration of nonlinear differential equations by use of rational approximation Final report, 15 Jan. 1965 - 14 Jul. 1967
Numerical integration of nonlinear differential equations by use of rational approximation
NUMERICAL INTEGRATION↗
Approximate solutions of Runge-Kutta equations
Approximate solutions of Runge-Kutta equations
APPROXIMATION METHOD↗
Approximate formulas for the intensity of electronic transitions in diatomic molecules
Approximate formulas for intensity of electronic transitions in diatomic molecules
DIATOMIC MOLECULE↗
Transition of a non-independent dark discharge
Approximate equations for transition of nonindependent dark discharge into independent discharge derived for linear and cylindrical electrode devices
ELECTRODE↗
Mechanism of deuteron breakup by 42-MeV alpha particles
Coincidence measurements of absolute cross sections for breakup of deuterons by 42 MeV alpha particles
SCATTERING CROSS SECTION↗
Transient radiation and conduction in a slotted slab and a hollow cylinder
Transient radiation and conduction in slotted slab and hollow cylinder
TEMPERATURE DISTRIBUTION↗
An approximate solution of the equations of motion for arbitrary rotating spacecraft
Approximate solution of motion equations for arbitrary rotating spacecraft
APPROXIMATION METHOD↗
Extended use of the Coulomb approximation - Mean powers of r, a sum rule, and improved transition integrals.
Mean powers of r, sum rule and improved transition integrals computed for effective quantum number range up to 8.5, using Coulomb approximation wave functions
WAVE FUNCTION↗
Recovery of functions from noisy measurements taken at randomly selected points and its application to pattern classification.
Stochastic approximation theory to obtain algorithms for recovery of functions, using noisy measurements taken at randomly selected points
RANDOM NOISE↗