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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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Eigen-vibration representation of transfer functions for structures by considering arbitrary excitations
Representation formula for solutions of second order linear differential equation
System identification learning method based on pattern recognition involving on-line error correction procedure for Volterra series system representation
Proof of relationship between state estimates and error covariance matrices in state-space representations in linear filtering
N representability problem for first and second order density matrices for odd number of fermions
Knoop hardness anisotropy dependency in fcc and hcp metal crystals investigated by stereographic representation
Technique based upon matrix representation and matrix collapsing calculates the probability of successfully completing manned missions and of returning the spacecrew safely to earth. This technique provides analytic expressions for each subsystem, making it possible to relate changes in subsystem reliability directly to mission success and crew safety.
Quadratic form representation of multivariable polynomials expressing sufficient condition for positive definiteness of real multivariable polynomial
Normal mode representation of HF properties of inhomogeneous plasma, analyzing Vlasov equation for free oscillations under external driving field
Polynomial bases for orthogonal group irreducible representations, rederiving Wigner coefficients
Quantum mechanical systems dynamics in diagonal coherent state representation, discussing applications
Nondiscrete locally compact group having noncontinuous irreducible representations, proving theorem
Two dimensional potential flow representation of subsonic jet interference effects for jet orifice
Fourier transform representation by approximations of ideal lens in coherent optical systems
Five dimensional rotations and representation of isomorphic spinor groups by boson operators calculus, expanding Gelfand states in Weyl patterns
Explicit spinor basis states for irreducible unitary representations of spinor covering group of deSitter group SO/4,1/
Locally compact topologies on group G and corresponding continuous irreducible unitary representations, noting existence of subgroup
Linear compressibility assumption incorporated into third order multiple integral representation of nonlinear creep of polyurethane, reducing time independent kernel functions