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Meyer, C., & Behr, B. (1990). Connenctions.
Schlüsselwörter: Hardware, Grundlage, dokumentation
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Schnute, J. T., & Richards, L. J. (1990). A Unified Approach to the Analysis of Fish Growth, Maturity, and Survivorship Data (Vol. 47).
Schlüsselwörter: Theorie, wachstum, Reife, methode, mathematik, statistik, fisch
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Shoesmith, E. (1990). A comparison of methods for estimating mean fecundity (Vol. 36).
Zusammenfassung: This paper is concerned with certain computational aspects of estimating the mean fecundity of a single age-class of a population of fish. Four computational methods for estimating mean fecundity are compared by Monte Carlo simulation. One of the four methods is the simple expedient of estimating fecundity at sample mean length, a method known to be downwardly biased. The Monte Carlo study shows that the other three methods reduce bias and provide worthwhile efficiency gains. For small samples, the most efficient of the four methods is a “bias adjustment”, proposed here, that uses easily calculated sample statistics. For large samples, a numerical integration method has the highest efficiency. The fourth method, a “direct summation” procedure which can be done easily in many statistical or spreadsheet programs, performs well for all sample sizes.
Schlüsselwörter: LÄngenfrequenz, normalverteilung, methode, theorie, mathematik, vergleich, statistik
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Altaba, C. R. (1990). The last known population of the freshwater mussel Margaritifera auricularia (Bivalva, Unionoida): A Conservation Priority (Vol. 52).
Schlüsselwörter: Margaritifera, Muschel, Vorkommen, Verbreitung
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Small, I. (1990). Exploring data provided by angling for salmonids in the British Isles. Hull: Proceeding.
Schlüsselwörter: Statistik, Methode, Fischerei, Fangstatistik
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Bagliniére, E., & Ombredane, D. (1990). Choix et fibilité d'un modéle de rétrocalcul des tailles en écologie halieutique, mise au point d'un logiciel informatique (Vol. 319).
Schlüsselwörter: Fischerei, population, modell, statistik, Grundlage
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Dégerine, S. (1990). Canonical Partial Autocorrelation Function of a Multivariate Time Series (Vol. 18).
Schlüsselwörter: Zeitreihe, mathematik, theorie, trend, statistik
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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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Shorrock, G. (1990). Improved Confidence Intervals for a Normal Variance (Vol. 18).
Schlüsselwörter: Mathematik, statistik, theorie, modell, Grundlage
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Akamine, T. (1990). An interval estimation of Leslie's method in removal methods.
Zusammenfassung: Leslie's method in removal methods is modeled into the joint of the binomial distributions. An interval estimation of p (removal ratio) and n (initial population size) based on the null hypothesis for p and n is easily obtained by the approximation of each binomial distribution to the normal distribution. The confidence region on the (p, n) plane is easily obtained by micro-computers. The maximum likelihood method for a point estimation and the convenient method on the curves of partial maximum likelihood for an interval estimation are also presented.
Schlüsselwörter: Fisch, statistik, binominal, population, basic, listing, modell, methode
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