[Show abstract] [Hide abstract] ABSTRACT: Computing the phylogenetic diversity of a set of species is an important part of many ecological case studies. More specifically, let \(\mathcal {T}\) be a phylogenetic tree, and let R be a subset of its leaves representing the species under study. Specialists in ecology want to evaluate a function \(f(\mathcal {T},R)\) (a phylogenetic measure) that quantifies the evolutionary distance between the elements in R.
buying behaviour noun [U]. âº MARKETING, COMMERCE the way that âpeople âbehave when they âbuy things, such as what they âbuy, where and when they âshop, and how much they âspend: Higher âenergy âcosts âprompted many âgrocery âshoppers to âchange their âbuying âbehaviour last âyear.
Speculative Buying. When purchasing is done purely from the point of view of taking advantage of a speculated rise in price of the commodity it is called Speculative buying. The intent is not to buy for the internal consumption but to resell the commodity at a later date when the prices have gone up and to make a profit by selling.