Some new historical evidence on the impact of affirmative action: Detroit, 1972

A sample of Detroit area firms in 1972 is used to determine the effects of affirmative action requirements and other firm characteristics on the recruitment and hiring of women and black men. The results suggest that affirmative action changed firm hiring practices with respect to black males. The unique data set also allows for a test of Becker’s well-known hypothesis that customer prejudice may influence the hiring of blacks or females.     

Local measured telephone service in the USA: A quantitative analysis

The USA has steadfastly held to a flat rate for local telephone service, whereas most other countries are characterized by a user-sensitive (measured service) system of pricing. Economic theory suggests some method of measured service pricing more accurately reflects the true costs of local service. This article seeks to determine how many US consumers could be induced to switch to measured service pricing, and using ordinary least squares, derives a model of the demand for measured service. The factors are identified that will induce the US population to move towards a measured service rate structure. The findings indicate that consumers are quite responsive to both relative price (between a local flat rate and a measured service rate) and advertising.     

An empirical investigation of different strategies for material requirements planning

Master production scheduling, component lot sizing, and capacity requirements planning represent three important modules of material requirements planning (MRP) systems. Coordinating these three modules has been largely dependent on managerial judgment and experience. In this research, five different strategies for integrating these modules are empirically investigated. These strategies differ mainly in the extent to which the modules are coordinated. The impact of the shop, product, component and cost characteristics is measured by varying ten experimental factors. The research findings so obtained provide several guidelines on the effectiveness of each strategy in different environmental settings.