منابع مشابه
ar X iv : 1 21 1 . 21 79 v 1 [ m at h . PR ] 9 N ov 2 01 2 HEREDITARY TREE GROWTH AND LÉVY FORESTS . ∗
We introduce the notion of a hereditary property for rooted real trees and we also consider reduction of trees by a given hereditary property. Leaf-length erasure, also called trimming, is included as a special case of hereditary reduction. We only consider the metric structure of trees, and our framework is the space T of pointed isometry classes of locally compact rooted real trees equipped w...
متن کاملA New Model for Size-Dependent Tree Growth in Forests.
Tree growth, especially diameter growth of tree stems, is an important issue for understanding the productivity and dynamics of forest stands. Metabolic scaling theory predicted that the 2/3 power of stem diameter at a certain time is a linear function of the 2/3 power of the initial diameter and that the diameter growth rate scales to the 1/3 power of the initial diameter. We tested these pred...
متن کاملTree allometry, leaf size and adult tree size in old-growth forests of western Oregon.
Relationships between tree height and crown dimensions and trunk diameter were determined for shade-tolerant species of old-growth forests of western Oregon. The study included both understory and overstory species, deciduous and evergreen angiosperms and evergreen conifers. A comparison of adult understory species with sapling overstory species of similar height showed greater crown width and ...
متن کاملSampling Tree Fragments from Forests
We study the problem of sampling trees from forests, in the setting where probabilities for each tree may be a function of arbitrarily large tree fragments. This setting extends recent work for sampling to learn Tree Substitution Grammars to the case where the tree structure (TSG derived tree) is not fixed. We develop a Markov chain Monte Carlo algorithm which corrects for the bias introduced b...
متن کاملSound Propagation through Forests and Tree Belts
The potential of forests or narrow belts of trees alongside surface transport corridors for reducing noise is often dismissed. Partly this is a consequence of conflicting experimental evidence. But also it is the result of incomplete understanding of the various attenuation mechanisms involved and, therefore, of how they could be exploited and used together in tree planting schemes. First exper...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Stochastic Processes and their Applications
سال: 2019
ISSN: 0304-4149
DOI: 10.1016/j.spa.2018.10.007