Recent traac analyses from various packet networks have shown the existence of long-range dependence in bursty traf-c. In evaluating its impact on queuing performance, earlier investigations have noted how the presence of long-range dependence , or a high value of the Hurst parameter H, is often associated with surprisingly large queue sizes. As a result, a common impression has been created of...

Purpose Each production process in construction is closely connected with the question of costs and deadlines. In every project an investor or customer, as well as the construction company, has to meet the planned completion date and the estimated costs associated with the construction. In practice, determining the duration of construction at minimum costs is still not based on the reliable cal...

In this paper we model, using the Queuing Theory, the situation in which the manager of some facilities wishes to maximize the profit generated by the same. The manager tries to attract customers and the effectiveness of his publicity politic is measured in the fraction of customers who renounce. In this paper, unlike the classic models, we consider that the service time of the only server of t...

The application of Queuing Theory to quantify the relationships between trajectory uncertainties due to aviation operations, precision of navigation and control, and traffic flow efficiency in the National Airspace System is discussed. This work builds on a previous research effort on Markovian queuing network models of the NAS. While the Markovian network model provides closed-form analytical ...

AbsmcfA closed-form decomposition approximation for finding the data performance in voicddata queuing systems is presented. The approximation is based on Courtois’ decompositiodaggregation techniques and is applied to Senet hybrid multiplexing, movable boundary frame allocation schemes. The approximation is applied to both infinite and finite buffer systems. In the former case the app...

In this paper we consider the optimal trade-off between average transmission power and average queueing delay for a single user transmitting data over a wireless fading channel. In particular we study the behavior of this trade-off in the regime of asymptotically large power and small delay. Our focus is on channels which require infinite power to minimize the average delay. For such channels, ...

The network delay has a huge impact to the quality of a networked control system. This paper investigates modelling the network delay incurred by control system packets traversing a Mobile Ad Hoc Network from a plant to a controller using the queuing theory. Control systems can become unstable if information is lost or delayed so in this paper we compare voice traffic modelling with control pac...

BACKGROUND Hospital pharmacy is responsible for controlling and monitoring the medication use process and ensures the timely access to safe, effective and economical use of drugs and medicines for patients and hospital staff. OBJECTIVES This study aimed to optimize the management of studied outpatient pharmacy by developing suitable queuing theory and simulation technique. PATIENTS AND METH...

Reaction time, response accuracy and psychophysiological measures such as lateralized readiness potential (LRP) have been used extensively to study information processing in dual tasks. To model these three dependent variables in a dual task, we propose a new mathematical modeling approach—a queuing network approach based on queuing network theory of human performance (Liu, 1996, 1997) and curr...