August 2010
Econometric analysis of the effects of water hyacinth on the fish catches in Lake Victoria, East Africa
Lake Victoria is Africa’s most important source of inland fishery production. The lake serves as a source of human food and raw material for the fishmeal industry. Several challenges face the lake fishery, including the invasion of water hyacinth. This paper analyses the effects of the invasion of water hyacinth on fishing in Lake Victoria. A static catch per unit of effort functions were estimated using Schaefer...
August 2010
The international trade prospective of agriculture sector in South African
The objective of this paper is to analyse the international trade performance of the South African agricultural industry in aggregate and by product group categories. A useful tool in this regard is the Gini and intra-industrial trade coefficient (IIT), which is used to examine the international trade balance of South Africa. Moreover, Ordinary Least Squares (OLS) is also used to identify factors that may be necessary...
August 2010
Truncation and endogenous stratification in various count data models for recreation demand analysis
The aim of this paper is to extend the truncated and endogenously stratified Poisson and negative binomial models to three alternative discrete distributions, namely the generalized Poisson, geometric and Borel distributions. Our primary intention here is to demonstrate how the improper treatments of the data generate divergent outcomes by applying those results to the recreation trip data surveyed from the visitors to...
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