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• W3009107787 abstract "This paper studies the operating room planning problem at the tactical and operational decision levels considering upstream and downstream units. For this purpose, a multi-objective mathematical programming model is proposed for the construction of master surgical scheduling and the allocation of elective and emergency surgeries. This model encompasses the profits of all stakeholders in the operating theater. A new policy, named complete opening policy, is introduced for the management of operating rooms that has some particular benefits compared to the conventional policy. Then, a scenario-based robust formulation is proposed to consider the uncertainties of surgery duration, length of stay and emergency demands. Because the simpler variants of this problem are known to be NP-complete, a new two-stage heuristic algorithm is developed for solving its large-scale instances. During the first stage, this algorithm generates an initial solution using a greedy constructive algorithm. To improve the initial solution, the algorithm applies eight actions and searches the neighborhoods. In the second stage, the algorithm evaluates whether or not closing an operating room could improve the incumbent solution. A heuristic algorithm, named partial-mixed integer programming, is also adapted as a benchmark algorithm. This algorithm incorporates the CPLEX solver and a very large-scale neighborhood search. Eventually, a hospital in Iran is introduced and evaluated. The computational results demonstrate that the application of the proposed methodology could potentially decrease the waiting cost, the overtime and idleness of operating rooms, and the total deviation from the average beds used in upstream and downstream. The computational results also show that an increase of two beds in the intensive care unit might potentially reduce the waiting cost by 3.6% and the total average of overtime and idleness of operating rooms each day by 20.3%." @default.
• W3009107787 created "2020-03-13" @default.
• W3009107787 creator A5018422805 @default.
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• W3009107787 date "2020-05-01" @default.
• W3009107787 modified "2023-10-02" @default.
• W3009107787 title "Robust operating room planning considering upstream and downstream units: A new two-stage heuristic algorithm" @default.
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• W3009107787 doi "https://doi.org/10.1016/j.cie.2020.106387" @default.
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