Drought and famine in Africa : Time for effective action

Optimism that famine in Africa could at last be prevented has been dashed by the drought that hit Southern Africa in 1991–1992. The droughts of the 1980s led researchers to make major advances in the understanding of food security and the design of early warning systems, but the critical transition from theory to effective response has not been made.     

Creating marketing strategies in new technology markets: A study of the expert system industry

Technological innovation is widely recognized as a major factor influencing competitiveness. This is particularly true i n turbulent and dynamic IT markets. Consequently, the effective strategic management of technological innovation by companies is one route to securing their survival and growth. The focus of the research presented is the evolution of marketing strategies by innovators facing diverse competitive challenges in the expert system market. The study examined the role of strategic marketing i n the commercial exploitation of technology and how this role changes, especially after market launch. What was interesting urm the extent to which suppliers were not only designing new technologies but also creating business applications for the new technology. The acquisition of market know-how to devise end-,user applications was a vital ingredient i n securing a competitive advantage.     

Deregulation and the competitive fringe: Owner-operators in the trucking industry

This paper assesses the direct and indirect effects of regulatory reform in the trucking industry on the employment of owner-operators. We utilize a probit estimation form derived from driver utility functions to estimate the change in the probability that a truck driver is an owner-operator following deregulation.We find that a representative driver with mean characteristics is 155.6 percent more likely to choose employment as an owner-operator in the deregulated environment. Thirty-six percentage points of this increase is due to the indirect effects of deregulation, which operate primarily through changes in wage differentials and unionization. The direct effect of deregulation accounts for a 120% increase in the probability of a driver choosing employment as an owner-operator.We are especially grateful to David Besanko, Ronald Braeutigam, Robert Drago, and John Heywood for insightful comments. For helpful discussions, we thank Marcus Alexis, Aaron Gellman, Leon Moses, Robert Porter, Ian Savage, Mark Shanley, Carol Simon, Paul Wolfson, and Christopher Udry. For their comments on an earlier draft, we thank Thomas Corsi, Curtis Grimm, and Theodore Keeler. We are grateful for information sent to us by Leon Witconis ofOwner Operator Magazine and William A. Coop ofRoad King Magazine. We acknowledge financial support from the National Science Foundation, Grant # SES-9111131 and from the Transportation Center of Northwestern University. We also thank two anonymous referees for their efforts in helping us to improve this paper.