Izvorni znanstveni članak

https://doi.org/10.17535/crorr.2025.0016

Aspects of blocking on time-varying tandem queueing network

Anjale Ramesh ; Department of Statistics, University of Calicut, Kerala-673 635, India *
M. Manoharan orcid.org/0000-0002-2546-0850 ; Department of Statistics, University of Calicut, Kerala-673 635, India

* Dopisni autor.

Sažetak

Most real-world service systems are susceptible to queue capacity constraints, leading to a blockage of entities. Several blocking mechanisms can be implemented when capacity constraints influence the flow of entities through the system. This study investigates the comparative performance of blocking-after-service (BAS) and blocking-before-service (BBS) mechanisms by modelling a hospital emergency department with a finite capacity queue. The model is based on a two-station tandem network with finite capacity on the intermediate queue, and we developed transient performance measures for the system in both mechanisms. Using a numerical approach, we highlight how these mechanisms influence the time-varying number of patients and the virtual workload in the system. Our results demonstrate that the BAS mechanism slightly outperforms the BBS mechanism in reducing unwanted congestion.

Ključne riječi

blocking-after-service (BAS); blocking-before-service (BBS); tandem queues; transient analysis; virtual workload

Hrčak ID:

329785

URI

https://hrcak.srce.hr/329785

Datum izdavanja:

2.4.2025.

Posjeta: 422 *