Výsledky vyhledávání - "D. R. Nielsen"

Akademický článek

State-space approach to evaluate the relation between soil physical and chemical properties Abordagem de espaço de estados para avaliar a relação entre propriedades químicas e físicas do solo

Autor: L. C. Timm, K. Reichardt, J. C. M. Oliveira, F. A. M. Cassaro, T. T. Tominaga, O. O. S. Bacchi, D. Dourado-Neto, D. R. Nielsen

Publikováno v: Revista Brasileira de Ciência do Solo, Vol 28, Iss 1, Pp 49-58 (2004)

The state-space approach is used to evaluate the relation between soil physical and chemical properties in an area cultivated with sugarcane. The experiment was carried out on a Rhodic Kandiudalf in Piracicaba, State of São Paulo, Brazil. Sugarcane

Externí odkaz: https://doaj.org/article/d0f704ec7f6a4dbb96b9a6f5d873959d

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Akademický článek

Scaling of semivariograms and the kriging estimation of field-measured properties

Autor: S. R. Vieira, P. M. Tillotson, J. W. Biggar, D. R. Nielsen

Publikováno v: Revista Brasileira de Ciência do Solo, Vol 21, Iss 4, Pp 525-533 (1997)

Two methods were evaluated for scaling a set of semivariograms into a unified function for kriging estimation of field-measured properties. Scaling is performed using sample variances and sills of individual semivariograms as scale factors. Theoretic

Externí odkaz: https://doaj.org/article/c5ed1301e8494437a872e7ba930f1aa7

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