We develop a model to investigate the manner in which the pricing, profitability and protection strategies of the seller of a proprietary digital good respond to changing market conditions. Specifically, we investigate how the optimal strategy of a seller of proprietary software (such as...

The technical efficiency of Portugese dairy farms is measured using frontier production functions estimated from panel data. Alternative estimators are compared and evaluated. The results suggest an average efficiency of 60 to 70 percent. The relationship between efficiency and farm...