منابع مشابه
Evaluating forest growth models
Effective model evaluation is not a single, simple procedure, but comprises several interrelated steps that cannot be separated from each other or from the purpose and process of model construction. We draw attention to several statistical and graphical procedures that may assist in model calibration and evaluation, with special emphasis on those useful in forest growth modelling. We propose a ...
متن کاملImposing Connectivity Constraints in Forest Planning Models
Rodolfo Carvajal H. Milton Stewart School of Industrial and Systems Engineering, Georgia Institute of Technology, Atlanta, GA 30332; Escuela de Negocios, Universidad Adolfo Ibáñez, Santiago, Chile, [email protected] Miguel Constantino Centro de Investigação Operacional, Faculdade de Ciências da Universidade de Lisboa, [email protected] Marcos Goycoolea Escuela de Negocios, Universid...
متن کاملEvaluating health risk models.
Interest in targeted disease prevention has stimulated development of models that assign risks to individuals, using their personal covariates. We need to evaluate these models and quantify the gains achieved by expanding a model to include additional covariates. This paper reviews several performance measures and shows how they are related. Examples are used to show that appropriate performanc...
متن کاملIntegrating fire risk into forest planning
The present thesis deals with the inclusion of fire risk considerations into forest planning in Catalonia (North-East Spain). The first part of the thesis focused on the modeling the susceptibility of different kinds of forest to fire (Studies I, II, III and IV), and the second part on the inclusion of the acquired knowledge about fire risk into forest planning systems (Studies V and VI). The m...
متن کاملEvaluating of Different Height-Diameter Nonlinear Models for Hornbeam in Uneven-Aged Stands (Case Study: Golestan Rezaeian Forest)
Projection of stand development over time relies on accurate height-diameter functions. In this study, we evaluated the capability of 43 nonlinear models to estimate hornbeam heights in a portion Rezaeian experimental forest in Gorgan, Golestan province. We applied a systematic random sampling method to collect field data within a 150×200 meter network (3.33% intensity). It resulted in 200 circ...
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ژورنال
عنوان ژورنال: Silva Fennica
سال: 2000
ISSN: 2242-4075
DOI: 10.14214/sf.639