Please use this identifier to cite or link to this item:https://hdl.handle.net/20.500.12259/84372
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dc.contributor.authorRupšys, Petras-
dc.contributor.authorPetrauskas, Edmundas-
dc.contributor.authorMemgaudas, Romas-
dc.contributor.authorBartkevičius, Edmundas-
dc.contributor.authorŽalkauskas, Remigijus-
dc.coverage.spatialRU-
dc.date.accessioned2019-05-17T02:59:13Z-
dc.date.available2019-05-17T02:59:13Z-
dc.date.issued2011-
dc.identifier.isbn978-5-9239-0403-1-
dc.identifier.otherVDU02-000045922-
dc.identifier.urihttps://hdl.handle.net/20.500.12259/84372-
dc.description.abstractTree height, volume and stem profile modelling is most often performed using non-linear fixed or mixed effects regression models based on ordinary differential equations or the solutions thereof. More sophisticated models as e.g. stochastic differential equations (SDEs) can in many cases provide a better description of the variations, which could be useful in various aspects of modelling. Models defined through stochastic differential equations (SDEs) allow for the representation of random variability in dynamical systems of a tree: height, volume and stem profile. This class of models is becoming more and more important and is a standard tool to model financial and population growth dynamics. The SDEs method can model height, volume, their increments and stem profile curves for trees growing under different site conditions. However, this method is highly non-trivial statistical problem where an analytical likelihood function can rarely be found. In the present paper, we use the Gompertz, the Verhulst and the Vasicek forms of SDEs with multiplicative or additive noise. It also represents a general framework that can be utilized to other SDEs formen
dc.description.sponsorshipVytauto Didžiojo universitetas-
dc.description.sponsorshipŽemės ūkio akademija-
dc.format.extentp. 44-57-
dc.language.isoen-
dc.relation.ispartofICFFI News = Новости МЦЛХП St. Petersburg: International Centre of Forestry and Forest Industries St. Petersburg state Forest Technical University, 2011, vol. 1, N 13-
dc.subject.otherMatematika / Mathematics (N001)-
dc.subject.otherMiškotyra / Forestry (A004)-
dc.titleModel building of tree height, volume, their increments and stem profile with stochastic differential equationsen
dc.typeStraipsnis kituose recenzuojamuose leidiniuose / Article in other peer-reviewed editions (S5)-
dcterms.bibliographicCitation20-
dc.date.updated2018-02-14T12:24Z-
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item.grantfulltextopen-
item.fulltextWith Fulltext-
crisitem.author.deptMiškų ir ekologijos fakultetas-
crisitem.author.deptMiškų ir ekologijos fakultetas-
crisitem.author.deptŽemės ūkio akademija-
crisitem.author.deptMiškų ir ekologijos fakultetas-
crisitem.author.deptŽemės ūkio akademija-
Appears in Collections:Universiteto mokslo publikacijos / University Research Publications
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