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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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At least 883 records · Page 49

All sources NASA NTRS DOE OSTI

NASA NTRS1969

A transformer of closely spaced pulsed wave forms having a nonzero average value

Transformer of closely spaced pulsed waveforms having nonzero average value

Niedra, J. M.↗

NASA NTRS1968

A mixed boundary value problem of elastostatics for an isotropic elastic cylinder containing a strip crack opened by internal pressure.

Mixed boundary value problem of elastostatics for isotropic elastic cylinder containing strip crack opened by internal pressure, using auxiliary functions

PREM NARAIN↗

NASA NTRS1968

Analysis of stellar spectra and the determination of f-values.

Growth curve for analysis of stellar spectra, determining relative f values and abundance

Aller, L. H.↗

NASA NTRS1968

High accuracy gamma function values for some rational arguments.

Tabulation of high accuracy gamma function values for some rational arguments, noting applications to Gaussian quadrature formulas, fractional Bessel functions and Airy functions

Byrd, P. F.↗

NASA NTRS1968

Use of the method of particular solutions in nonlinear, two-point boundary-value problems.

Particular solutions in nonlinear two point boundary value problems, showing convergence for uncontrolled and controlled systems

Heideman, J. C.↗

NASA NTRS1968

On the numerical solution of degenerate linear and nonlinear elliptic boundary value problems.

Scheme for choosing approximating system of difference equations for degenerate linear and nonlinear elliptic boundary value problems

Kushner, H. J.↗

NASA NTRS1969

Existence theorems for second order boundary value problems.

Necessary and sufficient conditions for solution existence to second order boundary value problems, considering second order differential equation involving function of three variables

Schrader, K. W.↗

NASA NTRS1969

Formulation of plasma wave echoes as an initial-value problem.

High order plasma wave echoes formulation and relation to initial perturbations based on Landau solution of initial value problem for Vlasov equation

Nishikawa, K.↗

NASA NTRS1969

Robust detection using extreme-value theory.

Robust detection of binary signal in additive noise, using extreme value theory /EVT/ to estimate probability density function and system error and threshold

Milstein, L. B.↗

NASA NTRS1969

Some aspects of numerical solution of boundary value problems.

Numerical solution of boundary value problems, discussing spectral domain and scattering matrix formalisms

Lee, S. W.↗

NASA NTRS1969

Absolute gf-values for Fe I and Fe II lines.

Absolute gf values for Fe I and Fe II lines between 3190 and 3315 A measured by spectral absorption through shock heated gas containing Fe

Grasdalen, G. L.↗

NASA NTRS1969

State space approach to mixed boundary value problems.

State space procedure for mixed boundary value problems applied to structural analysis, fluid mechanics and eigenvalues for deformable bodies

Chen, C. F.↗

NASA NTRS1969

Optimization of slowly-varying systems by minimization of the expected value of a quadratic performance index.

Algorithm for minimizing expected value of quadratic performance index in closed loop optimal control of linear time varying systems.

H D'Angelo↗

NASA NTRS1969

Nonlinear analysis of an absolute value type of early-late-gate bit synchronizer.

Absolute value type of early-late gate bit synchronizer phase noise performance determined by Fokker-Planck method, comparing results with different circuits performance

Simon, M. K.↗

NASA NTRS1970