Objective: In this study we consider a two-state retrial queueing system with feedback having two identical parallel servers. Transient state probabilities for exact number of arrivals and departures from the will be obtained when both, one or none servers is busy. Numerical graphical solutions also obtained. Methods: The difference-differential equations governing are solved recursively, Lapla...

The paper is devoted to the analysis of queueing systems in the context of the network and communications theory. We investigate a theorem on the law of the iterated logarithm for a queue of jobs in an open multiserver queueing network and its applications to the mathematical models of the generalized Internet system and a multiserver computer system.

ABSTRACT We present new 3-mm continuum and molecular lines observations from the ATOMS survey towards massive protostellar clump, MM1, located in filamentary infrared dark cloud (IRDC), G034.43+00.24 (G34). The observed are tracers of either dense gas (e.g. HCO+/H13CO+ J= 1–0) or outflows CS 2–1). most complete picture to date seven cores MM1 is revealed by dust emission. These found be gravita...

Queueing Theory deals with problems where some restricted resource should be shared between competitive flow of requests. In this paper we use Queueing Theory methods to perform a quantitative analysis of a single-level single-mediator multi-agent system. In the system, several agents, coordinated by the mediator process user queries. We adopt matrix analytic methods to compute performance char...

This paper studies a fluid queueing system that has a single server, a single finite buffer, and which applies a strict priority discipline to multiple arriving streams of different classes. The arriving streams are modeled by statistically independent, identically distributed random processes. A proof is presented for the highly intuitive result that, in such a queueing system, a higher priori...

This work describes an application of queueing network to model the insect population. The interarrival time and service time are both exponentially distributed. Preliminary results have been obtained to show the development of the insect population. Future work for the model’s potential development and uses are also discussed. Index Terms – Discrete event system; Queueing system; Olive fly; Po...

We consider a storage model that can be either interpreted as a certain queueing model with dependence between a service request and the subsequent interarrival time, or as a fluid production/inventory model with a two-state random environment. We establish a direct link between the workload distributions· of the queueing model and the production/inventory model, and we present a detailed analy...

Polymorphisms in certain inflammatory-related genes have been identified as putative differential risk factors of neurodegenerative diseases with abnormal protein aggregates, such as sporadic Alzheimer's disease (AD) and sporadic Parkinson's disease (sPD). Gene expression studies of cytokines and mediators of the immune response have been made in post-mortem human brain samples in AD, sPD, spor...

A single server queueing system 'With constant Poisson input is considered and the partiel elimination of the station's idle fraction is envisaged by intermittent close-do'Wn and setup. The rule pertaining to the dismantling and re-establishing of the service staticn-the management doctrine-is based on the instantaneous size of the queue, but these processes are assumed to consume time. Operati...

In this paper, a queueing system is formulated, analyzed and applied for the study of the queueing behavior of a DQDB station. At rst, an appropriate process is deened to capture the station's perception of the state of the distributed global queue (DQDB network) and a queueing model is formulated. In the sequel, a general queueing system is considered; the packet service time requirement is as...