Models At Individual Tree
Mostrando 1-12 de 14 artigos, teses e dissertações.
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1. FITTING AND CALIBRATING A MIXED-EFFECTS SEGMENTED TAPER MODEL FOR BRUTIAN PINE
ABSTRACT Taper models are one of several necessary tools in modern forest inventory, giving information on diameter at any point along the tree stem and this information can also be used to estimate stem volume. In this study, we used nonlinear mixed-effects (NLME) modeling approach to minimize existing statistical problems in constructing taper equations. A
CERNE. Publicado em: 2020-12
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2. Estimativa da oferta de biomassa florestal em povoamentos de Pinus taeda L. após intervenções culturais
Resumo Com a determinação do quanto de biomassa florestal é gerada após as intervenções culturais é possível definir as áreas passíveis de exploração. Com isso, o objetivo do trabalho foi quantificar e estimar a oferta de biomassa de Pinus taeda L. disponível após as intervenções culturais. O experimento foi realizado em reflorestamentos nos
Ciênc. Florest.. Publicado em: 02/12/2019
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3. Comparação de modelos estatísticos para estimativa da biomassa de árvores, e estimativa do estoque de carbono acima do solo em Cerrado
Resumo Neste trabalho foram comparados diferentes modelos estatísticos para a estimativa da biomassa individual de árvores, e estimados os estoques totais de biomassa e de carbono acima do solo, nos três compartimentos (arbóreo, herbáceo-arbustivo e serapilheira) de um cerrado sensu stricto típico no oeste da Bahia. Foi realizado o inventário floresta
Ciênc. Florest.. Publicado em: 30/05/2019
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4. Growth of Eremanthus erythropappus (DC.) MacLeish in Different Planting Spacings
ABSTRACT This study aimed to evaluate the growth of Eremanthus erythropappus (DC.) MacLeish submitted to different planting spacing and growth modelling based on the diameter and crown area projection, as well as to identify the best management strategy to be applied to control the competition, period and intensity of thinning. The evaluated planting spacin
Floresta Ambient.. Publicado em: 04/04/2019
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5. Predicting of biomass in Brazilian tropical dry forest: a statistical evaluation of generic equations
ABSTRACT Dry tropical forests are a key component in the global carbon cycle and their biomass estimates depend almost exclusively of fitted equations for multi-species or individual species data. Therefore, a systematic evaluation of statistical models through validation of estimates of aboveground biomass stocks is justifiable. In this study was analyzed t
An. Acad. Bras. Ciênc.. Publicado em: 23/08/2017
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6. Phenology of the multi-use tree species Carapa guianensis in a floodplain forest of the Amazon Estuary
ABSTRACT Carapa guianensis is a multi-use tree species that is used for the production of timber and non-timber forest products (NTFPs) that are used and sold by rural Amazonian populations. Here we aimed to evaluate the phenophases of C. guianensis in várzea forest and relate them to climatic seasonality. Phenophases of flowering (flower buds and open flow
Acta Bot. Bras.. Publicado em: 2016-12
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7. Modelagem de crescimento em nível de árvore individual para plantios comerciais de eucaliptos / Modeling growth at an individual tree level for commercial plantations of eucalyptus
Os modelos de crescimento e produção empíricos são compostos por três categorias: em nível de povoamento, em nível de distribuição diamétrica e em nível de árvore individual. Dentre estes, os modelos em nível de árvore individual são os mais complexos, pois utilizam a árvore como unidade básica de modelagem. No Brasil, estudos envolvendo ess
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 11/02/2011
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8. Modelos não-lineares para dados longitudinais provenientes de experimentos em blocos casualizados abordagem bayesiana / Nonlinear models for longitudinal data from experiments in randomized block design a bayesian framework
Data consisting of repeated measurements taken on each of a number of individual arise commonly in agricultural and biological applications. Modeling data of this kind usually involves the characterization of the relationship between the measured response and covariate. In many application,the proposed systematic relationship between the measured response is
Publicado em: 2011
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9. ESTIMATIVA DOS ESTOQUES DE BIOMASSA E NUTRIENTES EM FLORESTAS SECUNDÁRIAS NA AMAZÔNIA CENTRAL
This work evaluates the contents, storage and the distribution of nutrients in different parts of trees (leaves, fine and coarse branches, trunks, and fine and coarse roots), from two secondary forests with different history of uses and ages. Also the soil characterization of the two areas was conducted. Allometric equations were applyed to develop a model o
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 04/04/2008
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10. Function–structure analysis of proteins using covarion-based evolutionary approaches: Elongation factors
The divergent evolution of protein sequences from genomic databases can be analyzed by the use of different mathematical models. The most common treat all sites in a protein sequence as equally variable. More sophisticated models acknowledge the fact that purifying selection generally tolerates variable amounts of amino acid replacement at different pos
The National Academy of Sciences.
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11. Integrated modeling of clinical and gene expression information for personalized prediction of disease outcomes
We describe a comprehensive modeling approach to combining genomic and clinical data for personalized prediction in disease outcome studies. This integrated clinicogenomic modeling framework is based on statistical classification tree models that evaluate the contributions of multiple forms of data, both clinical and genomic, to define interactions of multip
National Academy of Sciences.
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12. Modeling the site-specific variation of selection patterns along lineages
The unambiguous footprint of positive Darwinian selection in protein-coding DNA sequences is revealed by an excess of nonsynonymous substitutions over synonymous substitutions compared with the neutral expectation. Methods for analyzing the patterns of nonsynonymous and synonymous substitutions usually rely on stochastic models in which the selection regime
National Academy of Sciences.