Mathematical models of plasma
Nonlinear Vlasov equation treatment by Fourier- Hermite expansion techniques for plasma problems
Feix, M.↗
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Mathematical models of magnetospheric convection and its coupling to the ionosphere
Magnetospheric convection models and effects on charged particle populations
Vasyliunas, V. M.↗
Mathematical characterization of mechanical behavior of porous frictional granular media, volume 1 Final report, 1 Jul. 1969 - 31 Oct. 1970
Modeling soil mass as continuum using constitutive equations of continuum mechanics
Aguirre-Ramirez, G.↗
The use of computer aided symbolic mathematics to explore the higher derivatives of Bellman's equation
Using FORMAC system to solve optimal control problem of behavior of higher space derivatives of optimal value function along optimal trajectory
Gershwin, S. B.↗
Mathematical representation of current density profiles from ion thrusters
Flow equation for representing ion beam current density profile from bombardment ion thrusters
Reynolds, T. W.↗
Design of a document retrieval system using pattern recognition and mathematical programming techniques
Design and testing of document retrieval system based on development of Boolean file searching instructions and pattern recognition
Borbash, S. R., Jr.↗
Study and development of a mathematical analysis for the performance assessment of space communication system parameters Final report
COPTRAN program and users manual update for space communication system performance testing
Brinkman, K. L.↗
Lifting-robot-space shuttle preliminary mission profile optimization program. Part 1: Mathematical formulation
LIFTING ROBOT minimum Hamiltonian-steepest ascent multistage lifting booster optimization program input and example problem for mission planning
Gottlieb, R. G.↗
Mathematical concept and historical development of the mascot guidance technique for space vehicles
Manned shuttle comprehensive optimization and targeting program (MASCOT)
Baker, C. D.↗
Mathematical correlation of observed condenser heat transfer variations
Numerical analysis of thermodynamic properties of condenser used with SNAP-8 mjs snap 8 heat exchangers condensers (liquefiers) thermodynamic properties
Hodgson, J. N.↗
Linear random operator equations in mathematical physics. III
Wave equations for motion in stochastic medium, using linear random operator theory
Adomian, G.↗
Mathematical analysis for the performance assessment of space communication parameters, IBM-360 version
Development of equations to determine communication capability of pulse or digital transmission link is discussed. Equation specifies probability detection error for one-way transmission. Analysis is conducted on IBM 360 computer using FORTRAN 4.
Grayson, L.↗
Mathematical model of the solar radiation force and torques acting on the components of a spacecraft
General expressions for the solar radiation force and torques are derived in the vectorial form for any given reflecting surface, provided that the reflecting characteristics of the surface, as well as the value of the solar constant, are known. An appropriate choice of a spacecraft-fixed frame of reference leads to relatively simple expressions for the solar radiation forces and torques in terms of the functions of the sun-spacecraft-earth angle.
Georgevic, R. M.↗
Mathematical modeling of high and low temperature heat pipes
Following a review of heat and mass transfer theory relevant to heat pipe performance, math models are developed for calculating heat-transfer limitations of high-temperature heat pipes and heat-transfer limitations and temperature gradient of low temperature heat pipes. Calculated results are compared with the available experimental data from various sources to increase confidence in the present math models. Complete listings of two computer programs for high- and low-temperature heat pipes respectively are included. These programs enable the performance to be predicted of heat pipes with wrapped-screen, rectangular-groove, or screen-covered rectangular-groove wick.
Chi, S. W.↗
Mathematical analysis of a Vuilleumier refrigerator.
A comprehensive analysis of the Vuilleumier refrigerator was conducted. This analysis includes the effects of nonisothermal gas heat addition and rejection, hot and cold regenerator inefficiencies, conduction losses, and gas leakage losses. A computer program was written which solves the equations resulting from the analysis. The program calculates internal pressures, temperatures, and gas flow rates as functions of refrigerator crank angle, as well as overall refrigerator cooling load and power input. Comparisons between the program results and available data show good agreement, with a marked improvement over the predictions of the ideal model.
Sherman, A.↗
Mathematical modeling of the glucose homeostasis in humans
A model of the glucose homeostasis system that allows in vivo validification is examined. A preliminary version of the model is given.
Banks, H. T.↗
Mathematics of Profile Inversion
One-dimensional and multi-dimensional inversion techniques for processing remote atmospheric and ionospheric sounding data
Colin, L.↗
The mathematical-physical problem of P prime(f) to N(h) inversion for anisotropic media
The requirements for a numerical inversion method to calculate electron density profiles from ionograms are discussed. A systematic investigation about the independence of the two magnetoionic components shows that the extent to which the range of ambiguity can be reduced depends mainly on the magnetic latitude. Error estimates and first-order corrections for less elaborate methods are included.
Paul, A. K.↗