FITTING MULTI-COMPONENT EXPONENTIAL DECAY CURVES BY DIGITAL COMPUTER
SCHOOL OF AEROSPACE MEDICINE BROOKS AFB TX
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The mechanical-graphical peel-off method and Marquardts 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.
- Computer Hardware