Stability in the patent race contest of Lee and Wilde

Summary. To determine how expenditure and profits vary with the number of firms in the patent race contest of Lee and Wilde, it is traditional to impose an ad-hoc stability condition on the best response function. This paper relates the stability condition to the standard myopic adjustment mechanism and shows that a concave hazard rate function with non- increasing hazard rate elasticity is sufficient for the analysis. We provide examples and reveal additional qualitative properties of the Lee and Wilde model. Received: November 15, 1996; revised version: March 25, 1998     

Effort and performance in group contests

We study contest performance by focusing on the per capita payoffs of the contestants in an important class of asymmetric two-group contests. The group with the higher valuation has a greater chance of winning the contest whenever the rent-seeking technology is increasing and concave. We note that equilibrium efforts and payoffs per capita are uniquely defined and can be subjected to a comparative statics analysis. We show that payoff per capita for a group increases with its own valuation but decreases with the valuation of the opposing group. Per capita payoff for a group increases with its population.     

Capital asset prices in an oligopolistic market

The author wishes to thank Kalyan Chatterjee, George Monahan, Martin Shubik, and a referee for helpful comments on an earlier version of this paper.     

Competing with Marketing Channels and Logistics in Africa's Booming Markets: An Investigation of Emerging Supply Chain Management Practices in Ghana

Using Ghana as the African context for testing the applicability of supply chain management, this study reveals that firms there place less emphasis on logistics and channels management practices relative to product and pricing marketing mix elements. However, this situation is changing in response to the perceived positive impact of the regulatory and technological environment on market-share competitive performance. Those firms that emphasize integration of both logistics and channels management practices exhibited the strongest competitive market-share and financial performance; firms whose practices placed moderate emphasis on both logistics and channels management integration reported moderate levels of market-share and financial performance. These results suggest that firms in Ghana compete along a continuum of supply chain integration primarily on the basis of the increasingly market-oriented business environment.