World food futures — growth with redistribution?

The authors contend that the world has the capacity to support both the present population and any likely increase in population, relatively comfortably for at least the next 100 years. Although millions are malnourished today, world food production is sufficient to feed them, and problems in distribution are the cause of their misfortune. The reasons behind this paradox are examined in the context of the world futures debate, and some implications for policy are suggested. As Gross National Product rises, the poorest nations and income groups within nations need protection against ever-increasing demand for food by wealthier groups.     

Omission of an observation from a regression analysis: A dicussion on efficiency loss,with applications

A scalar measure of loss of efficiency is defined for the case of a single observation omitted from a regression analysis. This measure is used to algebraically analyse the structure of loss of efficiency, and shows that it arises from a multiplicative relationship between three distinct components. The theory is applied to (a) assessment of the effect of the next observation when time series data is used, (b) the likely advantage to be gained from the use of mixed estimation, and (c) the efficiency of the Cochrane-Orcutt procedure.     

Food imports of developing countries

The trend of food imports of developing countries and its interpretation are discussed. The author presents an analysis across countries of changes in the food supply balances and cereal imports from the early 1960s to the late 1970s. Changes in food energy supplies have not corresponded closely with changes in domestic food production per head, and the increase in imports tends to be greater in middle income than in low income countries. The balance of payments implications are examined, and the article concludes with a consideration of the reliability of international market supplies.     

STRATEGIC TIME PERIODS AND STRATEGIC GROUPS RESEARCH: CONCEPTS AND AN EMPIRICAL EXAMPLE

This article briefly reviews previous research on strategic groups and focuses upon the influence of time on strategic positioning. This stability approach also motivates research into the dynamics of strategic group shifts. An illustrative example drawn from the drug industry emphasizes the practical application of these concepts. The analytically-derived strategic groupings are then compared with evidence drawn from industry and academic research. Finally, following discussion of the results, some suggestions about integrating the strategic group concept into strategic management research are also made.