Computing leaf rectangularity index: theory and applications

Abstract

A measure known as leaf rectangularity index (LRI) is estimated by means of bootstrap regression. The index, it is envisaged, will assist in discussing the geometry of leaf surfaces, if possible among different plants and across species. This paper considers a survey on previous works on the index and suggests possible areas of applications and collaborative research.

On policy relevance of correct specification for production functions

“…If the value of σ is significantly different from unity, this points to the fact that there can be a possible form of mis-specification. Some works on mis-specification are cited in Essi (2000), , Essi, Iyaniwura and Ojekudo (2007) ; and Essi (2009Essi ( , 2010 . These earlier results, show that the consequence is more serious when a multiplicative error plagued data set is fitted with an additive error based model than viceversa Therefore in this circumstance, the values of other model parameters should not be relied upon heavily in policy making and implementation.…”