[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.
Investors who believe that a stock price will increase over time are said to be bullish. Investors who buy calls are bullish on the underlying stock.That is, they believe that the stock price will rise and have paid for the right to purchase the stock at a specific price known as the exercise price or strike price.An investor who has sold puts is also considered to be bullish on the stock.hat is, they believe that the stock price will rise and have paid for the right to purchase the stock at a specific price known as the exercise price or strike price. An investor who has sold puts is also considered to be bullish on the stock.