The paper examines the trend in public sector – private sector wagedifferentials in the 1980s and 1990s, using a variety of econometricmethods...br>

The generation of leveled production schedules is of high impor-tance for mixed-model assembly lines whose parts and materials are suppliedjust-in-time by multi-level production processes. The Output Rate Variatonproblem is the standard mathematical representation of this complex levelscheduling...

Transshipment yards, where gantry cranes allow for an ecient transshipment of containersbetween different freight trains, are important entities in modern railway systems andfacilitate the general shift from point-to-point transport to hub-and-spoke railway systems.Modern rail-rail transshipment...

A mixed-model assembly line enables the joint production of different models of acommon base product in intermixed model sequence (lot size one). Previous approachesfor the short-term planning task of model sequencing either aim at minimizingwork overload (mixed-model sequencing and car...

The rent-seeking model of Tullock (1980) has stimulated a large literature on rent-seekingcontests, of which Hillman (1989) and Nitzan (1994) provide useful surveys. AlthoughTullock's 'winner take all' model has been adapted and extended in numerous ways, thereremain fundamental modeling issues,...

We present the asymptotic properties of double-stage quantile regressionestimators with random regressors, where the first stage is based on quantile regressionswith the same quantile as in the second stage, which ensures robustness of the estimationprocedure. We derive invariance properties...