This research examines the location choice of California private schools in 1978-1979. We make use of some of the recent developments in the analysis of count data. The results indicate that the character of the population and the public schools influence location decisions. Private schools with...

We investigate product life cycles in the commercial mainframe computer market. We use hazard models with time-varying covariates to estimate the probability of product exit and Poisson models to estimate the probability of introduction. We measure the importance of different aspects of market...

This research examines the relative strength and significance of the status of "incumbent contractor" in federal computer procurement. One finding, as expected, is that an agency is likely to acquire a system from an incumbent vendor. Another finding, perhaps more interesting, is that the...