The main aim of this paper is to examine issues relating to the performance of various Telecommunication networks, and applied queuing theory for better design and improved efficiency. Firstly, giving an analytical study of queues deals with quantifying the phenomenon of waiting lines using representative measures of performances, such as average queue length (on average number of customers in ...

This study presents a reduction of production disturbances of a shoemaking industry through discrete event simulation approach. The study is conducted at Peacock Shoe factory found in Addis Ababa, Ethiopia.  This factory faces line balancing problem that becomes production disturbance for its assembly lines. Detail time study is carried out for the selected shoe model using stopwatch. Assembly ...

In many cognitive radio applications, there are multiple types of message queues. Existing queueing analysis works in underlay CR networks failed to discuss packets heterogeneity. Therefore high priority packets with impatient waiting time that have preemptive transmission opportunities over low class are investigated. We model the system behavior as a M/M/1+GI queue which is represented by a t...

When waiting times cannot be observed directly, Little’s law can be applied to estimate the average waiting time by the average number in system divided by the average arrival rate, but that simple indirect estimator tends to be biased significantly when the arrival rates are timevarying and the service times are relatively long. Here it is shown that the bias in that indirect estimator can be ...

BACKGROUND & AIMS Measuring and analyzing of provided services times in Emergency Department is the way to improves quality of hospital services. The present study was conducted with aim measuring and analyzing patients waiting time indicators in Emergency Department in a general hospital in Iran. MATERIAL & METHODS This cross-sectional, observational study was conducted during April to Septe...

Background and aims: Quality of visit services is a decisive aspect of patient-physician communication that its inadequacy can negatively influence the diagnosis efficiency. The aim of this study was to survey visit quality at provincial level during plan of health sector evolution in Tabriz. Methods: A sample of 540 patients who referred to the outpatien...

Round Robin (RR) is a pre-emptive algorithm used in multiprogrammed, conventional systems to schedule all the processes which are present in ready queue for execution. It has some advantages over other algorithms i.e., it gives a chance to all process to utilize processor for equal time interval. But this technique increases average turnaround time, average waiting time and if quantum value is ...

Background: Patient waiting time is considered as a crucial parameter in the assessment of healthcare quality and patients' satisfaction towards healthcare services. Data concerning this has remained limited in Vietnam. Thus, this study aims to assess patient waiting time in the outpatient clinic in Viet Duc Hospital (Hanoi, Vietnam) in order to enable stakeholders to inform evidence-based inte...

In a call center, agents may handle calls at different speeds, and also may be more or less successful at resolving customers’ inquiries, even when only considering customers calling with similar requests. One common measure of successful call resolution is whether or not the call results in the customer calling back. This presents a natural trade-off between speed and quality, where speed is d...