Accession Number : AD0477451


Title :   FITTING MULTI-COMPONENT EXPONENTIAL DECAY CURVES BY DIGITAL COMPUTER


Corporate Author : SCHOOL OF AEROSPACE MEDICINE BROOKS AFB TX


Personal Author(s) : Bell, Earl L


Full Text : https://apps.dtic.mil/dtic/tr/fulltext/u2/477451.pdf


Report Date : Aug 1965


Pagination or Media Count : 45


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.


Descriptors :   *MATHEMATICAL PROGRAMMING , *DIGITAL COMPUTERS , MATHEMATICAL MODELS , ALGORITHMS , DATA PROCESSING , BIOLOGY , LINEAR PROGRAMMING , CODING , DIFFERENTIAL EQUATIONS , FLOW CHARTING


Subject Categories : Computer Hardware


Distribution Statement : APPROVED FOR PUBLIC RELEASE