We propose a new approach for scheduling with strict deadlines and apply this approach to the TimeConstrained Project Scheduling Problem (TCPSP). To be able to meet these deadlines, it is possible to work in overtime or hire additional capacity in regular time or overtime. For this problem, we develop a two stage heuristic. The key of the approach lies in the first stage in which we construct p...

In this paper, we study a multiple-OR surgery scheduling problem constrained by shared PACU capacity within the block-booking framework. With surgery sequences predetermined in each OR, a Discrete Event Dynamic System (DEDS) is devised for the problem. A DEDS-based stochastic optimization model is formulated in order to minimize the cost incurred from patient waiting time, OR idle time, OR bloc...

In today’s competitive market, most companies develop manufacturing systems that can help in cost reduction and maximum quality. Human issues are an important part of manufacturing systems, yet most companies ignore their effects on production performance. This paper aims to developing an integrated workforce planning system that incorporates the human being. Therefore, a multi-objective mixed ...

Patients' risks from medication errors are widely acknowledged. Yet not all errors, if they occur, have the same risks for severe consequences. Facing resource constraints, policy makers could prioritize factors having the greatest severe-outcome risks. This study assists such prioritization by identifying work-related risk factors most clearly associated with more severe consequences. Data fro...

We consider the integrated workforce planning and allocation problem for a high volume manufacturing facility that operates in two non-overlapping shifts of twelve hours each day, with twenty eight shifts for a two week planing period. In such facilities, operational workforce planning is typically carried out in two steps consisting of the multishift assignments and the single-shift allocation...

The vehicle routing problem with time windows (VRPTW) is an important problem in third-party logistics and supply chain management. We extend the VRPTW to the VRPTW with overtime and outsourcing vehicles (VRPTWOV), which allows overtime for drivers and the possibility of using outsourced vehicles. This problem can be applied to third-party logistics companies for managing central distributor-lo...