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On fair routing from emergency departments to hospital wards / Avishai Mandelbaum in Management science, Vol. 58 N° 7 (Juillet 2012) 

Public ISBD [article]  in Management science > Vol. 58 N° 7 (Juillet 2012) . - pp.1273-1291 Titre : On fair routing from emergency departments to hospital wards : QED queues with heterogeneous servers Type de document : texte imprimé Auteurs : Avishai Mandelbaum, Auteur ; Petar Momcilovic, Auteur ; Yulia Tseytlin, Auteur Année de publication : 2012 Article en page(s) : pp.1273-1291 Note générale : Management Langues : Anglais (eng) Mots-clés : Queueing  systems  Heterogeneous  servers  Healthcare  Hospital  routing  policies  Fairness  Quality-  and  efficiency-driven  regime  Asymptotic  analysis Résumé : The interface between an emergency department and internal wards is often a hospital's bottleneck. Motivated by this interaction in an anonymous hospital, we analyze queueing systems with heterogeneous server pools, where the pools represent the wards, and the servers are beds. Our queueing system, with a single centralized queue and several server pools, forms an inverted-V model. We introduce the randomized most-idle (RMI) routing policy and analyze it in the quality- and efficiency-driven regime, which is natural in our setting. The RMI policy results in the same server fairness (measured by idleness ratios) as the longest-idle-server-first (LISF) policy, which is commonly used in call centers and considered fair. However, the RMI policy utilizes only the information on the number of idle servers in different pools, whereas the LISF policy requires information that is unavailable in hospitals on a real-time basis. ISSN : 0025-1909 En ligne : http://mansci.journal.informs.org/content/early/2012/03/09/mnsc.1110.1491.abstra [...] [article] On fair routing from emergency departments to hospital wards : QED queues with heterogeneous servers [texte imprimé] / Avishai Mandelbaum, Auteur ; Petar Momcilovic, Auteur ; Yulia Tseytlin, Auteur . - 2012 . - pp.1273-1291. Management Langues : Anglais (eng) in Management science > Vol. 58 N° 7 (Juillet 2012) . - pp.1273-1291 Mots-clés : Queueing  systems  Heterogeneous  servers  Healthcare  Hospital  routing  policies  Fairness  Quality-  and  efficiency-driven  regime  Asymptotic  analysis Résumé : The interface between an emergency department and internal wards is often a hospital's bottleneck. Motivated by this interaction in an anonymous hospital, we analyze queueing systems with heterogeneous server pools, where the pools represent the wards, and the servers are beds. Our queueing system, with a single centralized queue and several server pools, forms an inverted-V model. We introduce the randomized most-idle (RMI) routing policy and analyze it in the quality- and efficiency-driven regime, which is natural in our setting. The RMI policy results in the same server fairness (measured by idleness ratios) as the longest-idle-server-first (LISF) policy, which is commonly used in call centers and considered fair. However, the RMI policy utilizes only the information on the number of idle servers in different pools, whereas the LISF policy requires information that is unavailable in hospitals on a real-time basis. ISSN : 0025-1909 En ligne : http://mansci.journal.informs.org/content/early/2012/03/09/mnsc.1110.1491.abstra [...]