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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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Akamine, T. (1988). Estimation of parameter for Richards model.
Zusammenfassung: Akamine's (1986) BASIC program by Marquardt's method was rewritten for Richards model and its expanded model by the periodic function. For 0.9 similar to 1.1 the “LOG” function is corrected by Taylor series. Data estimated to be negative are cut off. AIC judges the effect of adding n to the parameters. Richards model is not so important in practice but it is important theoretically.
Schlüsselwörter: Wachstum, theorie, methode, statistik, listing, basic, modell
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Akamine, T. (1988). Evaluation of Error Caused by Histogram on Estimation of Parameters for a Mixture of Normal Distributions.
Zusammenfassung: When histograms are used instead of raw data to estimate parameters by the maximum likelihood method, data has an error distributed according to a regular distribution among the width of the histogram. This influence on the estimation of parameters is evaluated by the linearized error propagation rule. Covariance is in proportion to the width squared and in inverse proportion to the number of data. Even if the number of data is large, the precision is low for small normal distributions. In practice, an adequate width will be given by the shapes of the histograms.
Schlüsselwörter: Normalverteilung, basic, listing, methode, algorithmus, poly-verteilung
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Akamine, T. (1989). An interval estimation for extraction using Bayesian statistics.
Zusammenfassung: The statistical model for extraction is a binomial distribution. The conventional method for employing this binomial model is based on approximation to a normal distribution. The Bayesian statistical method, which assumes that the prior distribution of parameters is uniform, is preferable to the conventional method, and two theorems demonstrate that this model corresponds well with the conventional method. Furthermore, this model is simpler to understand and easier to calculate by micro-computer than the conventional method.
Schlüsselwörter: Bayesian, normalverteilung, binominal, statistik, theorie, algorithmus, listing, basic
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Akamine, T. (1989). An interval estimation for the Petersen method using Bayesian statistics.
Zusammenfassung: The statistical model for the Petersen method is a hypergeometric distribution. Approximation to a binomial distribution has been used, and the usual method for this binomial model is based on approximation to a normal distribution. The Bayesian statistical model for a binomial distribution, which assumes that the prior distribution of parameters is uniform, corresponds well with the conventional method. However, the Bayesian statistical method for a hypergeometric distribution which assumes the uniform prior distribution is not feasible. The prior distribution according to the inverse squared parameter is natural for this model. Beta function and zeta function are important to understand these methods. This model is simpler to understand and easier to calculate by micro-computer than the conventional method.
Schlüsselwörter: Bayesian, binominal, basic, listing, methode, theorie, algorithmus
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Albrecht, H. (1940). Grundfragen des Fischpassbaues (Vol. 20).
Schlüsselwörter: Fisch, Fischaufstiegshilfe
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Albrecht, H. (1981). Die Flußkrebse des westliche Kärnten (Vol. 171).
Schlüsselwörter: Krebs, Flusskrebs, Astacus astacus, Kartierung
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Albrecht, H. (1982). Das System der europäischen Flusskrebse (Decapoda, Astacidae): Vorschlag und Begründung (Vol. 79).
Schlüsselwörter: Krebs, Systematik, Flusskrebs
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Albrecht, H. (1983). Besiedlungsdichte und ursprünglich holozäne Verbreitung der europäischen Flußkrebse (Decapoda: Astacidae) (Vol. 6).
Schlüsselwörter: Krebs, Verbreitung, Vorkommen, Geographisch
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Albrecht, H. (1983). Die Prostastacidae n. fam., fossile Vorfahren der Flusskrebse? (Vol. 1983).
Schlüsselwörter: Krebs, Prähistorisch, Systematik
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