FITTING MULTI-COMPONENT EXPONENTIAL DECAY CURVES BY DIGITAL COMPUTER

Abstract

The mechanical-graphical peel-off method and Marquardt's composite Gauss-Newton and gradient iterative method were programmed for the Philco 2000, a 16K asynchronous digital computer. Both programs were coded in the Philco Algebraic Programming Language (ALTAC) using single-precision floating-point arithmetic. Background material, flow charts, flow chart descriptions, subprogram usage, computer memory requirements, and illustrative numeric examples of the analyses of both simulated and empirical data are given. Each sample of simulated data possessed an error component; the effects of an asymptote, in several instances, were included during the generation of the data. Dog lung nitrogen washout activity experiments were the source of the empirical data.

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Document Details

Document Type
Technical Report
Publication Date
Aug 01, 1965
Accession Number
AD0477451

Entities

People

  • Earl L. Bell

Organizations

  • United States Air Force School of Aerospace Medicine

Tags

Communities of Interest

  • Biomedical
  • Space

DTIC Thesaurus Topics

  • Algorithms
  • Arithmetic
  • Composite Materials
  • Computations
  • Computer Programming
  • Computer Programs
  • Computers
  • Curve Fitting
  • Digital Computers
  • Elements
  • Equations
  • Floating Point Operations
  • Language
  • Materials
  • Mathematical Models
  • Precision
  • Programming Languages

Readers

  • Calculus or Mathematical Analysis
  • Computer Programming and Software Development.
  • Computer Science.