In this paper we describe the successful application of a sophisticated Operations Research model and the corresponding solution techniques for scheduling the 6,500+ drivers and conductors of the Dutch railway operator NS Reizigers (Netherlands Railways). In 2001 the drivers and conductors were very dissatisfied with the structure of their duties, which led to nation wide strikes. However, the ...

in this paper, we develop a freight transportation model for railway network considering hazmat transportation issue. in the transportation system considered, different customers can request for carrying hazmat and non- hazmat boxes. it is assumed that the sequence of the trains in the network is known. the objective is assigning the non-hazmat boxes and hazmat boxes to wagons of the trains so ...

We give a simple explicit formula for turnover reduction when a large number of alphas are traded on the same execution platform and trades are crossed internally. We model turnover reduction via alpha correlations. Then, for a large number of alphas, turnover reduction is related to the largest eigenvalue and the corresponding eigenvector of the alpha correlation matrix.

More police reduces crime but little is know about the mechanism. Does more police deter crime by reducing its attractiveness, or is the reduction driven by an incapacitation of recurrent criminals? This paper exploits micro-level data on single robberies together with redeployments of two police forces within a city, providing first evidence of (negative) incapacitation that is driven by reduc...

Issue: When benchmarking (as in engagement, work‐ stress, safety, or performance‐related applications), the use of normative scores can be a big mistake. Because if the norm group characteristics change in any way, the entire benchmarking process is rendered problematic. More importantly, if score magnitudes are considered related to performance, then it is the actual score which carries that r...

This study investigated the impact of motivation on employee turnover in Telecom sector of Pakistan. The questionnaire used was designed to focus on motivation and turnover questions. One hundred and six close-ended questionnaires were used for analyses. Regression and correlation analyses were proposed to explore the impact of motivation on employee’s intention to quit. Motivation was establis...