-level GVCs are indeed not chain-like but are better characterized by the tree topology. Hence, we compute the global value trees …

such tree-sparse programs. Three closely related natural formulations are theoretically analyzed from a control …Dynamic stochastic programs are prototypical for optimization problems with an inherent tree structure inducing …

Tree planting is widely advocated and applied in urban areas, with large-scale projects underway in cities globally …. Numerous potential benefits are used to justify these planting campaigns. However, reports of poor tree survival raise … different supporting conditions—relating not only to the type and placement of the tree, but also to the broader urban system …

show quasi-transitivity of the majority relation when the graph expressing the neighborhood relation is a tree. We also …

been involved in tree species selection trials in southern China since 1984. The trials were aimed at identifying fast …-growing species of Eucalyptus, Acacia and Casuarina. The Chinese have been planting Australian tree species for more than 100 years …