A new algorithm for the Lie transformation
Recursive triangular algorithm for Lie transformation from introduction of small parameter into generating function and Hamiltonian
Mersman, W. A.↗
SEARCH · Engineering Papers
Results for “Transformative”
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.
Spatial registration of multispectral and multitemporal digital imagery using fast Fourier transform techniques
Multispectral and multitemporal digital imagery spatial registration using fast Fourier transform techniques, applying to earth resources satellite imagery preprocessing
Anuta, P. E.↗
Orthogonal transforms and feature selection in pattern recognition
Orthogonal transforms and feature selection using pattern, Harr, Walsh, Fourier and Karhunen- Loeve spaces for providing efficient classification algorithms in pattern recognition
Andrews, H. C.↗
Image coding by linear transformation and block quantization
Image data coding by linear transformation and block quantization, considering Fourier, Hadamard and Karhunen-Loeve methods
Habibi, A.↗
A development of the WKB approximation by use of transformations
WKB wave functions for one dimensional nonrelativistic problems by simple transformation derivation, solving by application of Liouville substitution to Schroedinger equation
Engelke, R.↗
On a transformation of the differential equations of the lunar theory
Hill-Brown differential equations for satellite coordinates transformed for integration with analytical programming language
Musen, P.↗
Explicit recursive algorithms for the construction of equivalent canonical transformations
Explicit recursive algorithms for construction of Lie and von Zeipel transformations
Mersman, W. A.↗
Brans-Dicke theory under a transformation of units and the three tests
Brans-Dicke gravitation theory, applying units transformation to field equations
Morganstern, R. E.↗
Transformation of a potential function under coordinate rotations
Potential function transformation under coordinate rotations, deriving coefficients for Laplace equation series expansion
Levie, S. L., Jr.↗
Reliability and correlates of a three-phase code transformation task /3P-COTRAN/
Three phase code transformation task reliability and correlation, representing general/factor analytic intellectual abilities and personality characteristics
Alluisi, E. A.↗
Geophysical coordinate transformations
Geophysical cartesian coordinate system transformation, using vector-matrix formalism
Russell, C. T.↗
Attitude determination and sensor alignment via weighted least squares affine transformations
Vehicle attitude determination and guidance sensor orientation by vector space matrix method, minimizing errors by weighted least squares affine transformation technique
Davenport, P. B.↗
Calculation of turbulent boundary layers with heat transfer and pressure gradient utilizing a compressibility transformation. Part 3: Computer program manual
A computer program is described capable of determining the properties of a compressible turbulent boundary layer with pressure gradient and heat transfer. The program treats the two-dimensional problem assuming perfect gas and Crocco integral energy solution. A compressibility transformation is applied to the equation for the conservation of mass and momentum, which relates this flow to a low speed constant property flow with simultaneous mass transfer and pressure gradient. The resulting system of describing equations consists of eight ordinary differential equations which are solved numerically. For Part 1, see N72-12226; for Part 2, see N72-15264.
Schneider, J.↗
Fourier spectroscopy with a one-million-point transformation
A new type of interferometer for use in Fourier spectroscopy has been devised at the Aime Cotton Laboratory of the National Center for Scientific Research (CNRS), Orsay, France. With this interferometer and newly developed computational techniques, interferograms comprising as many as one million samples can now be transformed. The techniques are described, and examples of spectra of thorium and holmium, derived from one million-point interferograms, are presented.
Connes, J.↗
Transformation temperatures of martensite in beta phase nickel aluminide
Resistivity and thermal arrest measurements determined that the compositional dependence of Ms (martensite state) temperatures for NiAl martensite was linear between 60 and 69 atomic percent nickel, with Ms = 124 Ni - 7410 K. Resistivity and surface relief experiments indicated the presence of thermoelastic martensite for selected alloys. Some aspects of the transformation were studied by hot stage microscopy and related to the behavior observed for alloys exhibiting the shape-memory effect.
Smialek, J. L.↗
Lorentz transformations in the presence of a uniform gravitational field.
This article describes a Lorentz-like transformation between a fixed frame and an inertial frame that is free falling due to the presence of a uniform gravitation field. The application to the clock paradox problem and some connections with similar works are also discussed.
Broucke, R.↗
Use of the Hough transformation to detect lines and curves in pictures.
Hough (1962) has proposed an interesting and computationally efficient procedure for detecting lines in pictures. It is pointed out that the use of angle-radius rather than slope-intercept parameters simplifies the computation further. Two alternative interpretations of Hough's method are presented. The transform approach considered can be extended to arbitrary curves. A convenient parameterization for the family of curves of interest has to be selected. It is important to have a small number of parameters since the accumulator implementation requires quantization of the entire parameter space.
Duda, R. O.↗
Fourier transform C-13 NMR analysis of some free and potassium-ion complexed antibiotics.
Fourier transforms of the noise-decoupled, natural abundance C-13 NMR free induction decays of the cyclic antibiotic valinomycin and its potassium-ion complex have been obtained at 25.2 MHz. Comparisons are made with C-13 NMR spectra taken at 22.6 MHz of the cyclic antibiotic nonactin and the synthetic polyether dicyclohexyl-18-crown-6 and their potassium complexes. The results obtained suggest that conformational rearrangements of the molecule as a whole can compete with direct interactions between carbons and the potassium ion in determining C-13 chemical shift differences between the free and complexed species.
Ohnishi, M.↗