We consider single-machine stochastic scheduling models with due dates as decisions. In addition to showing how to satisfy given service-level requirements, we examine variations of a model in which the tightness of due-dates conflicts with the desire to minimize tardiness. We show that a...

Based on theoretical arguments and empirical evidence we advocate the use of the lognormal distribution as a model for activity times. However, raw data on activity times are often subject to rounding and to the Parkinson effect. We address those factors in our statistical tests by using a...

Evolving environmental laws have expanded the number of agents with legitimate environmental property rights. Injunctive remedies to increasingly contested exchanges affect the value of the right itself, and therefore the behavior of potentialt raders. Recent amendments to New Mexico Water Law...

In a typical hub airport, incoming flights from many origins feed outgoing flights to equally many destinations. If an incoming flight is late, outgoing flights that are fed by it may also be delayed. Alternatively, aircraft may leave before some feeding flights arrive, thereby incurring high...

Three approaches to the problem of determining buffer stocks to protect against uncertainty in product mix are presented. Each approach can be adapted to recognise the total cost, rather than the total size of component safety stock. Uncertainty in product mix arises because of forecast errors...

How do experienced spreadsheet users compare to inexperienced ones, and what light can this comparison shed on spreadsheet best practices? This is the question we address in this paper, using the results from a survey of nearly 1600 respondents. This survey was completed by a wide range of...

We investigate the stochastic flow shop problem with m machines and general distributions for processing times. No analytic method exists for solving this problem, so we looked instead at heuristic methods. We devised three constructive procedures with modest computational requirements, each...