Firms operating in highly competitive markets must find ways to deliver customer value
beyond offering competitive prices. Providing superior customer service in such …

The model of perishable queueing-inventory system with server vacations is studied. Upon
service completion, server takes vacation if there are no customers in the queue and it starts …

In this paper, models of unreliable multi-server retrial queues with delayed feedback are
examined. The Bernoulli retrial is allowed upon the arrival of both primary (from outside) and …

New models of queueing-inventory systems with finite and infinite queues of impatient
consume customers are proposed. Here level of inventory is reduced only after servicing …

The Markov model of a two-stage queueing network with feedback is proposed. Poisson
flows arrive to both stages from outside. A part of already serviced calls at the first node …

We consider a two‐dimensional time‐inhomogeneous birth‐death process to model the time‐
evolution of fake news in a population. The two components of the process represent …

Markov models of perishable inventory systems where some customers are withdrawn after
completion of the service without buying the stock are studied. It is assumed that the service …

The models of retrial queues M/M/K/K with delayed feedback are considered. If upon arrival
of primary call (p-call) there are free channels then it occupies one of them for a some …

A Markov model of two stage queuing network with feedback is proposed. Poisson flows
arriving to both stages from outside and part of already serviced calls in the first node …

Системы обеспечения материальными ресурсами одновременно обладают
свойствами систем массового обслуживания (СМО) и систем управления запасами …