conclusions: the patients' waiting times and the number of patients waiting to receive services in both shifts could be reduced by using multitasking persons and reallocating them to the time-consuming stage of filling prescriptions, using queuing theory and simulation techniques. background: hospital pharmacy is responsible for controlling and monitoring the medication use process and ensures ...

It is not an easy task to write a book on queuing networks when a large number of books in the topic have already been published. The authors have written a very timely book on queuing networks which can be used by people working in the area of communication networks. The basics of stochastic process have been discussed in Chapter 1 with queuing networks being introduced in Chapter 2 where the ...

This paper presents a mathematical model for an inventory control system in which customers’ demands and suppliers’ service time are considered as stochastic parameters. The proposed problem is solved through queuing theory for a single item. In this case, transitional probabilities are calculated in steady state. Afterward, the model is extended to the case of multi-item inventory systems. The...

Discrete-time multiserver queues have been successfully used in the performance evaluation of computer and communication systems in various contexts such as TDM, voice-data integration, deflection routing and more recently, ATM-switching technology. In digital communication systems, buffers are used for the temporary storage of digital information awaiting transmission via some communication ch...

In Part I of this paper, the optimal throughput–delay tradeoff for static wireless networks was shown to be , where and are the average packet delay and throughput in a network of nodes, respectively. While this tradeoff captures the essential network dynamics, packets need to scale down with the network size. In this “fluid model, ” no buffers are required. Due to this packet scaling, does not...

the problem of pole assignment, also known as an eigenvalue assignment, in linear discrete-time periodic systems in discs was solved by a novel method which employs elementary similarity operations. the former methods tried to assign the points inside the unit circle while preserving the stability of the discrete time periodic system. nevertheless, now we can obtain the location of eigenvalues ...

Modern healthcare achieved great progress in developing and manufacturing medical devices, treatment procedures and drugs to serve individual patients. However, relatively little technical talent and material resources have been devoted to improving the overall health care delivery process as a system. Discrete-event simulation (DES) models and queuing analytic (QA) theory are the most widely a...

This paper surveys the contributions and applications of queuing theory in the field of healthcare. The paper summarizes a range of queuing theory results in the following areas: waiting time and utilization analysis, system design, and appointment systems. The paper also considers results for systems at different scales, including individual departments (or units), healthcare facilities, and r...