During a three-year period, we evaluated the profitability of a deficit-irrigation (DI) treatment in mature `Lane late' navel orange (Citrus sinensis (L.) Osb.) trees grafted on two different drought-tolerant rootstocks, `Cleopatra' mandarin (Citrus reshni Hort. ex Tanaka) and `Carrizo' citrange...

Ridge regression has been widely applied to estimate under collinearity by defining a class of estimators that are dependent on the parameter <italic>k</italic>. The variance inflation factor (VIF) is applied to detect the presence of collinearity and also as an objective method to obtain the value of <italic>k</italic> in ridge...

The study of sport in the economy presents a rich arena for the application of sharply focused microeconomics, macroeconomics and econometrics to both team and individual outcomes. This unique book offers a survey of recent research that follows the tradition of empirical and theoretical...