Variational problems for tree roots and branches
Variational problems for tree roots and branches
复制标题
树根和树枝的变分问题
DOI:
10.1007/s00526-019-1666-1
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发表时间:
2019
影响因子:
2.1
通讯作者:
Sun, Qing
中科院分区:
文献类型:
--
作者:
Bressan, Alberto;Palladino, Michele;Sun, Qing
This paper studies two classes of variational problems introduced in Bressan and Sun (On the optimal shape of tree roots and branches. arXiv:1803.01042), related to the optimal shapes of tree roots and branches. Given a measuredescribing the distribution of leaves, asunlight functionalcomputes the total amount of light captured by the leaves. For a measuredescribing the distribution of root hair cells, aharvest functionalcomputes the total amount of water and nutrients gathered by the roots. In both cases, we seek a measurethat maximizes these functionals subject to a ramified transportation cost, for transporting nutrients from the roots to the trunk or from the trunk to the leaves. Compared with Bressan and Sun, here we do not impose any a priori bound on the total mass of the optimal measure, and more careful a priori estimates are thus required. In the unconstrained optimization problem for branches, we prove that an optimal measure exists, with bounded support and bounded total mass. In the unconstrained problem for tree roots, we prove that an optimal measure exists, with bounded support but possibly unbounded total mass. The last section of the paper analyzes how the size of the optimal tree depends on the parameters defining the various functionals.
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DOI:
--
发表时间:
1991
期刊:
影响因子:
--
作者:
G. Buttazzo;G. Maso
通讯作者:
G. Maso
DOI:
--
发表时间:
2013
期刊:
影响因子:
--
作者:
F. Maddalena;S. Solimini
通讯作者:
S. Solimini
影响因子:
1.1
作者:
L. Brasco;F. Santambrogio
通讯作者:
F. Santambrogio
DOI:
--
发表时间:
2013
期刊:
SIAM Journal of Control and Optimization
影响因子:
--
作者:
A. Bressan;G. Coclite;Wen Shen
通讯作者:
Wen Shen
影响因子:
1.6
作者:
Qinglan Xia
通讯作者:
Qinglan Xia