The Demography of Resources
研究了1919至1975年间英国所有航空公司的飞机数据，发现飞机年龄和规模以及整个机队的年龄和规模异质性显著影响资产剥离决策，展示了用种群统计学方法研究资源组合管理的价值。
Abstract A longitudinal event‐history analysis using complete data on the aircraft fleets of all B ritish airlines over the period 1919 to 1975 was applied to elucidating how a firm's internal resource demography can explain its resource divestiture decisions. The likelihood of divestiture for any particular aircraft was found to depend strongly on its age and size, but also on the age and size heterogeneity of an airline's entire fleet. The results constitute a demonstration of the utility of taking a demographic approach to studying the management of resource portfolios. This approach may also prove fruitful in the study of other types of strategic resources and their management.