Akamine, T. (1987). Comparison of Algorithms of Several Methods for Estimating Parameters of a Mixture of Normal Distributions (Vol. 37).
Schlüsselwörter: Normalverteilung, modell, lÄngenfrequenz, vergleich, methode, listing, basic, statistik, fischerei, algorithmus
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Castro, M., & Erzini, K. (1988). Comparison of two length-frequency based packages for estimating growth and mortality parameters using simulated samples with varying recruitment patterns (Vol. 86).
Zusammenfassung: Length-frequency distributions were simulated for species with recruitment patterns characteristic of many tropical fish: 1) one recruitment peak per year, fast growth and very high mortality, 2) one recruitment peak per year, slow growth and moderate to high mortality 3) two recruitment peaks per year, slow growth and moderate to high mortality, and 4) random recruitment, slow growth and moderate to high mortality. Two microcomputer program packages – one incorporating the ELEFAN I & II programs and the other implementing a form of Modal Progression Analysis – were used to estimate growth and mortality parameters, and these were compared with the initial parameters used to generate the simulated samples. The results, while generally encouraging, suggest that multiple recruitments per year make it difficult to estimate growth and mortality parameters using these two packages.
Schlüsselwörter: Methode, wachstum, mortalitÄt, lÄngenfrequenz, vergleich, statistik, fisch
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Mittnik, S. (1990). Computation of Theoretical Autocovariance Matrices of Multivariate Autoregressive Moving Average Time Series (Vol. 52).
Schlüsselwörter: Mathematik, zeitreihe, modell, theorie, statistik
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Dahlberg, M. L. (1978). Computer program for analysis of the homogeneity and goodness of fit of frequency distributions, FORTRAN 4 (Vol. 76).
Zusammenfassung: A computer program was developed which forms frequency distributions from length measurements and then calculates a chi-square statistic which is used to test the homogeneity of the frequencies for the purpose of pooling. Output includes listing of arithmetic mean, variance, standard deviation, standard error of the mean, total sample size, and chi-square statistic of goodness of fit for individual groups and for the pooled frequency distribution. Histograms of all frequency distributions are produced as full-page printer charts, scaled if necessary to 50 units by up to 100 class intervals. The pooled frequencies and class midpoints are punched on cards to facilitate additional analyses. The program was developed on an IBM 360/65 OS System and required 56,811 bytes of storage.
Schlüsselwörter: computer-programmes; population-structure
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Ossiander, F. J., & Wedemeyer, G. (1973). Computer Program for Sample Sizes Required to Determine Disease Incidence in Fish Populations (Vol. 30).
Zusammenfassung: A computer program is described for generating the sample size tables requiered in fish hatchery disease inspection and certification. The program was designed ti aid in detection of infectious pancreatic necrosis (IPN) in salmonids, but it is applicable to any fish desease inspection when the sampling plan follows the hypergeometriv distibution.
Schlüsselwörter: Fischerei, Krankheit, Methode, Mathematik
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Hoenig, J. M., Prager, M. H., & Payton, N. B. (1989). Computer Programs for Investigating the Effects of Environmental Events on a Time Series of Recruitment.
Schlüsselwörter: Fischerei, statistik, trend, population, methode, listing
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Doenni, W., & Enz, C. (2001). Computersimulationen in der Fischökologie: nur etwas für Spezialisten? (Vol. 2).
Schlüsselwörter: Fischerei, Ökologie, Simulation, Modell, Populationsdynamik, Fisch, Schweiz
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Meyer, C., & Behr, B. (1990). Connenctions.
Schlüsselwörter: Hardware, Grundlage, dokumentation
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Akamine, T. (1985). Consideration of the BASIC Programs to Analyse the Polymodal Frequency Distribution into Normal Distribution (Vol. 35).
Schlüsselwörter: Maximum-likeli, poly-verteilung, normalverteilung, marquardt, statistik, basic, listing, theorie, algorithmus
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Akamine, T. (1985). Consideration of the BASIC programs to analyse the polymodal frequency distribution into normal distributions.
Zusammenfassung: BASIC programs to analyse the polymodal frequency distribution into normal distributions were studied and a Maximum-Likelihood program was compared with a Least-Squares program and its variations. The Maximum-Likehood method is the most suitable procedure for the problem. The X super(2) minimum method is more suitable than the Least-Squares method for normal data, but the latter is more suitable than the former for abnormal data which have a few separate parts at the end of a distribution. These methods are easy to apply for a good estimation. Parameters are stable where an obvious minimal value is recognized between neighboring distributions, but the confidence intervals of the parameters are larger than for the parts where it is not recognized.
Schlüsselwörter: LÄngenfrequenz, methode, fischerei, basic, listing, statistik, mathematik, normalverteilung, modell, algorithmus
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