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Sequencing in an appointment system with deterministic arrivals and non-identical exponential service times

Choi, Sangdo; Wilhelm, Wilbert E. - In: Computers & operations research : and their … 117 (2020), pp. 1-16

Persistent link: https://www.econbiz.de/10012175466

Comparison of a branch-and-bound heuristic, a newsvendor-based heuristic and periodic Bailey rules for outpatients appointment scheduling systems

Choi, Sangdo; Banerjee, Amarnath - In: Journal of the Operational Research Society : OR 67 (2016) 4, pp. 576-592

Persistent link: https://www.econbiz.de/10011516587

An inverse newsvendor model to set the optimal number of customers in a capacitated environment

Choi, Sangdo; Ketzenberg, Michael - In: International journal of production economics 196 (2018), pp. 188-197

Persistent link: https://www.econbiz.de/10011820814

Inventory and financial performance in the pharmaceutical industry : what transpired over the last two decades?

Choi, Jeong Hoon; Choi, Sangdo; Suresh, Nallan C. - In: International journal of operations & production management 44 (2024) 10, pp. 1863-1890

Persistent link: https://www.econbiz.de/10015055790

Inventory and financial performance in the pharmaceutical industry : what transpired over the last two decades?

Choi, Jeong Hoon; Choi, Sangdo; Suresh, Nallan C. - In: International journal of operations & production management 45 (2025) 1, pp. 301-328

Persistent link: https://www.econbiz.de/10015199899

An approach to optimize block surgical schedules

Choi, Sangdo; Wilhelm, Wilbert E. - In: European Journal of Operational Research 235 (2014) 1, pp. 138-148

We provide an approach to optimize a block surgical schedule (BSS) that adheres to the block scheduling policy, using a new type of newsvendor-based model. We assume that strategic decisions assign a specialty to each Operating Room (OR) day and deal with BSS decisions that assign...

Persistent link: https://www.econbiz.de/10010871214

Three-stage approaches for optimizing some variations of the resource constrained shortest-path sub-problem in a column generation context

Zhu, Xiaoyan; Wilhelm, Wilbert E. - In: European Journal of Operational Research 183 (2007) 2, pp. 564-577

Persistent link: https://www.econbiz.de/10005075237

One-dimensional machine location problems in a multi-product flowline with equidistant locations

Sarker, Bhaba R.; Wilhelm, Wilbert E.; Hogg, Gary L. - In: European Journal of Operational Research 105 (1998) 3, pp. 401-426

Persistent link: https://www.econbiz.de/10005075397

Prescribing product upgrades, prices and production levels over time in a stochastic environment

Wilhelm, Wilbert E.; Xu, Kaihong - In: European Journal of Operational Research 138 (2002) 3, pp. 601-621

Persistent link: https://www.econbiz.de/10005337368

A procedure for optimizing tactical response in oil spill clean up operations

Srinivasa, Anand V.; Wilhelm, Wilbert E. - In: European Journal of Operational Research 102 (1997) 3, pp. 554-574

Persistent link: https://www.econbiz.de/10005337620