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8篇 您的检索式:作者名="Pierre Calmon"
    题名 作者 年代 出处 被引量
1An integrated model to simulate the scattering of ultrasounds by inclusions in steels显示文摘 Pierre Calmon Bertrand Bele 2004Ultrasonics2004,42,:1
2Modeling of the ultrasonic response of inclusions in steels显示文摘 Pierre Calmon Bertrand Bele 2001Review of Progress in Quantitative Nondestructive Evaluation2001,22,:1
3Application of ultrasonic modeling to the positioning of defects in a cladded component显示文摘 Pierre Calmon Frédéric Lasserre 2004Review of Progress in Quantitative Nondestructive Evaluation2004,23,:1
4A model-based inverse method for positioning scatterers in a cladded component inspected by ultrasonic waves显示文摘 Alain Lhe'mery b Pierre Calmon 2005Ultrasonics2005,43,:1
5Ultrasonic NDT simulation tools for phased array techniques显示文摘 Pierre Calmon Sylvain Chatillon 2001Review of Progress in Quantitative Nondestructive Evaluation2001,22,:1
6An integrated model to simulate the scattering of ultrasounds by inclusions in steels显示文摘MICHEL DARMON PIERRE CALMON BERTR 2004Ultrasonics2004,,42:1
7Ultrasonic NDT simulation tools for phased arraytechniques显示文摘Steve Mahaut Pierre Calmon Sylvain Chatillon 2001Review of Progress in Quantitative Nondestructive Evaluation2001,,22:1
8Bayesian inference of biomass growth characteristics for sugi(C.japonica)and hinoki(C.obtusa)forests in self-thinned and managed stands显示文摘Background:Forests are an important sink for atmospheric carbon and could release that carbon upon deforestation and degradation.Knowing stand biomass dynamic of evergreen forests has become necessary to improve current biomass production models.The different growth processes of managed forests compared to self-managed forests imply an adaptation of biomass prediction models.Methods:In this paper we model through three models the biomass growth of two tree species(Japanese cedar,Japanese cypress)at stand level whether they are managed or not(self-thinning).One of them is named self-thinned model which uses a specific self-thinning parameterαand adapted to self-managed forests and an other model is named thinned model adapted to managed forests.The latter is compared to a Mitscherlich model.The self-thinned model takes into account the light competition between trees relying on easily observable parameters(e.g.stand density).A Bayesian inference was carried out to determine parameters values according to a large database collected.Results:In managed forest,Bayesian inference results showed obviously a lack of identifiability of Mitscherlich model parameters and a strong evidence for the thinned model in comparison to Mitscherlich model.In self-thinning forest,the results of Bayesian inference are in accordance with the self-thinning 3/2 rule(α=1.4).Structural dependence between stand density and stand yield in self-thinned model allows to qualifying the expression of biological time as a function of physical time and better qualify growth and mortality rate.Relative mortality rate is 2.5 times more important than relative growth rate after about 40 years old.Stand density and stand yield can be expressed as function of biological time,showing that yield is independent of initial density.Conclusions:This paper addressed stand biomass dynamic models of evergreen forests in order to improve biomass growth dynamic assessment at regional scale relying on easily observable parameters.These models can be used to dynamically estimate forest biomass and more generally estimate the carbon balance and could contribute to a better understanding of climate change factors.Valerie Nicoulaud-Gouin Marc-Andre Gonze Pierre Hurtevent Phillippe Calmon 2021Forest Ecosystems2021,8,4:1
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