MODELING A MASS SERVICE SYSTEM FOR COVID-19 VACCINES
Keywords:
mass service system simulation, GPSS models, COVID-19Abstract
This report presents a simulation model of a multi-channel mass service (MSS) system using the GPSS
World computer simulation system. The model is presented for an 8-hour working day of service staff in a hospital
during the administration of vaccines against COVID-19. Three seats are placed for patients waiting for service,
taking into account the fact that if all the seats are occupied when the next patient arrives, he will be refused entry to
the hospital (system). The flow of patients (service requests) is Poisson. Patient service times are exponentially
distributed. Input data are provided for the values of the mean time interval between the arrival of patients at the
entrance of the hospital or system and the mean time of their service. The implementation of the model has been
carried out when the system operates with two serving devices (medical staff), with three seats available. In cases
where the operation of the system with two medical personnel is modeled, it is assumed that the average service
times are equal in value. Model time is in minutes, with 1 unit of model time equal to 1 minute. As a result, it is
determined: the number of patients served; the number of patients denied service; the workload of medical personnel
(the service unit); the average time to service patients for the administration of vaccines against COVID-19.
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