Ordering in CuAu
Rapidly quenched CuAu ordered state development on low temperature annealing, presenting Young modulus variation as function of heat treatment time
Brotzen, F. R.↗
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Results for “Order”
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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Penetration to second order of an electrostatic field into a warm plasma
Electrostatic field second order penetration into Vlasov warm electron plasma, using electron velocity distribution models
Lewak, G. J.↗
Classical fourth- and lower order Runge-Kutta formulas with stepsize control and their application to heat transfer problems
Classic fourth and lower order Runge-Kutta formulas with stepsize control, applying to heat transfer problems
Fehlberg, E.↗
First slip times versus static phase error offset for the first- and passive second-order phase-locked loop
Slip vs static error offset for first and passive second order phase locked loop as function of signal to noise ratio via computer simulation
Holmes, J. K.↗
Second-order effects in the Faraday rotation of satellite signals
Faraday rotation of satellite signals, deriving relations for second order effects
Heron, M. L.↗
Equal-valued-capacitor active-RC-network realisation of a 3rd-order lowpass Butterworth characteristic
Active RC network realization of third order lowpass Butterworth characteristic with all capacitors having same value
Huelsman, L. P.↗
The weight enumerators for several classes of subcodes of the 2nd order binary Reed-Muller codes
Explicit formulas for Euclidean geometry and Berlekamp subcodes weight enumerators for second order binary Reed-Muller codes
Kasami, T.↗
A rapidly converging first-order training algorithm for an adaptive equalizer
Rapidly converging first order training algorithm for adaptive equalizer design in PAM signal reception, using variable step sizes for mean- square error minimization
Schonfeld, T. J.↗
Orders of convergence for iterative procedures
Orders of convergence for iterative procedures for finding zero of nonlinear function, considering secant and Steffenson method
Voigt, R. G.↗
Order-disorder transition in NH4Cl. III - Specific heat
Ammonium chloride specific heat measurement near order-disorder transition, comparing results to Ising model behavior
Schwartz, P.↗
Direct calculation of first- and second-order density matrices - The higher RPA method
First and second order density matrices calculation of pure state N fermion systems, using higher random phase approximation
Simons, J.↗
Rapidly converging second-order tracking algorithms for adaptive equalization
Rapidly converging second order optimal tracking algorithms for adaptive equalization on basis of estimated bounds for eigenvalues of signal plus noise correlation matrix
Schonfeld, T. J.↗
Microstrain and electron micrographic slip line studies of ordered and disordered Cu3Au
Slip line deformation of ordered and disordered Cu-Au intermetallic single crystals from microstrain and electron micrographic studies
Roberts, J. M.↗
Optimal control of first order distributed systems
The problem of characterizing optimal controls for a class of distributed-parameter systems is considered. The system dynamics are characterized mathematically by a finite number of coupled partial differential equations involving first-order time and space derivatives of the state variables, which are constrained at the boundary by a finite number of algebraic relations. Multiple control inputs, extending over the entire spatial region occupied by the system ("distributed controls') are to be designed so that the response of the system is optimal. A major example involving boundary control of an unstable low-density plasma is developed from physical laws.
Johnson, T. L.↗
An invariant second-order closure model of the compressible turbulent boundary layer on a flat plate
The development of an invariant model designed expressly for the computation of shear flows is discussed. The model for incompressible layers seeks a second-order closure of the equations for the mean and fluctuating fields. The development of a method for computing the behavior of shear layers in compressible forces is described. The complexity of the analysis is restrained by limiting the consideration to a flat plate boundary layer where the mean pressure can be taken to be constant.
Donaldson, C. D.↗
Some efficient methods for obtaining infinite series solutions of n-th order linear ordinary differential equations
The use of the theta-operator method and generalized hypergeometric functions in obtaining solutions to nth-order linear ordinary differential equations is explained. For completeness, the analysis of the differential equation to determine whether the point of expansion is an ordinary point or a regular singular point is included. The superiority of the two methods shown over the standard method is demonstrated by using all three of the methods to work out several examples. Also included is a compendium of formulae and properties of the theta operator and generalized hypergeometric functions which is complete enough to make the report self-contained.
Allen, G.↗
A design study for the addition of higher order parametric discrete elements to NASTRAN
The addition of discrete elements to NASTRAN poses significant interface problems with the level 15.1 assembly modules and geometry modules. Potential problems in designing new modules for higher-order parametric discrete elements are reviewed in both areas. An assembly procedure is suggested that separates grid point degrees of freedom on the basis of admissibility. New geometric input data are described that facilitate the definition of surfaces in parametric space.
Stanton, E. L.↗
On the probability of cycle-slipping in first-order phase-locked loops.
The first-passage time boundary value problem for first-order phase-locked loops (PLL) is analyzed, and spectral representations are developed for the probability density function (pdf), the distribution function, and the moments of the first time to passage (or cycle-slip). For the sinusoidal PLL, an asymptotic formula, that is surprisingly accurate even at low loop SNR's and large frequency offsets, is obtained for the pdf of the time to cycle-slip, in terms of the mean time to slip.
La Frieda, J. R.↗