Bias correction, explosive behavior, non-linearity, model selection, persistence, specification testing. - Bias Korrektur, explosives Verhalten, Nichtlinearität, Modellselektion, Persistenz, Spezifikationstests

Numerical weather forecast errors are generated by model deficiencies and by errors in the initial conditions which interact and grow nonlinearly. With recent progress in data assimilation, the accuracy in the initial conditions has been substantially improved so that accounting for systematic...

Commodity producers in general typically have a commodity driven cost baseas well as commodity price driven revenue stream. The research reportinvestigates the correlation between input commodity price and gold price forgold mining companies, and how commodity price behaviour could...

The aim of this study is to contribute to the explanation of consumer behaviour.To do so, it is not sufficient to identify the product characteristics most relevant tothe consumer. Moreover, the reasons why consumers attach meaning to the productattributes have to be found out, whereas the...

In this study demand relations for primary oilseeds in South Africa is estimated and interpreted with the use of econometric models. Two different models, namely the Linear Approximate Almost Ideal Demand System (LA/AIDS) and the two-step Error Correction Model (ECM), were applied to annual...

Due to the lack of information on the factors that affect the marketing of cowpeas in Senegal, this study investigates key aspects for the successful marketing of cowpeas in Senegal. The contribution this study makes lies in the information it generates to empower role-players in the cowpea...

Beginning in 1981, the government of Mali undertook several policy reforms to allow participation of private traders in cereal marketing, which up to that date was officially controlled by a parastatal. These reforms can be expected to have an impact on the working of the cereals market. One of...

This paper presents a quantitative analysis of the Chinese wheat and rice industries. The specific purpose is to analyze government policies for wheat and rice, and their impacts on industry performance. Dynamic relationships among prices, quantities and total GNP are investigated with a vector...

The objective of this study is to investigate the appropriateness of hand-held programmable calculators as a research tool for economists working on price policy issues in LDC's. The emphasis is on the use of programmable not for purposes of sophisticated analysis of large data sets, but rather...

The oil palm has been the most important of the three major cash crops in the southern region of Nigeria. During the period 1955-1964, exports of palm kernels and palm oil averaged over 33 million per year, about 21 percent of the value of Nigerian exports in this period. This compares with the...