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Nonlinear mixed modeling of basal area growth for shortleaf pine.
Budhathoki, Chakra B.; Lynch, Thomas B.; Guldin, James M. - 2008
Mixed model estimation methods were used to fit individual-tree basal area growth models to tree and stand … heterogeneous errors, the effects of which could be corrected by using a variance function in the estimation process. The revised …
Persistent link: https://www.econbiz.de/10009429425
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Systematic sampling of discrete and continuous populations: sample selection and the choice of estimator.
Valentine, Harry T.; Affleck, David L.R.; Gregoire, … - 2009
best choice. Restricted selection affords estimation of attribute totals for a population when the population size - - for … example, the area of an areal continuum - - is unknown. Ratio estimation, however, is most likely a more precise option when …
Persistent link: https://www.econbiz.de/10009429445
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Estimating Current Forest Attributes from Paneled Inventory Data Using Plot-Level Imputation: A Study from the Pacific Northwest.
Eskelson, Bianca N.I.; Temesgen, Hailemariam; Barrett, … - 2009
Information on current forest condition is essential to assess and characterize resources and to support resource management and policy decisions. The 1998 Farm Bill mandates the US Forest Service to conduct annual inventories to provide annual updates of each state's forest. In annual...
Persistent link: https://www.econbiz.de/10009429483
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Estimating Current Forest Attributes from Paneled Inventory Data Using Plot-Level Imputation: A Study from the Pacific Northwest.
Eskelson, Bianca N.I.; Temesgen, Hailemariam; Barrett, … - 2009
Information on current forest condition is essential to assess and characterize resources and to support resource management and policy decisions. The 1998 Farm Bill mandates the US Forest Service to conduct annual inventories to provide annual updates of each state's forest. In annual...
Persistent link: https://www.econbiz.de/10009429485
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A resampling variance estimator for the k nearest neighbours technique.
Magnussen, S.; McRoberts, R.E.; Tomppo, E.O. - 2010
totals. Their efficiency in small-area estimation problems can be poor. In this study, we propose a modified balanced … repeated replication estimator of variance (BRR) of a kNN total that performs well in small-area estimation problems and under …
Persistent link: https://www.econbiz.de/10009429532
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Estimating genotypic correlations and their standard errors using multivariate restricted maximum likelihood estimation with SAS Proc MIXED.
Holland, J.B. - 2006
estimation efficiency, and ignorance of the estimators' distributional properties when data are missing. An alternative approach … REML estimation of genotypic and phenotypic correlations. Additionally, a method to obtain approximate parametric estimates …
Persistent link: https://www.econbiz.de/10009429550