in this paper, a multi-product continues review inventory control problem within batch arrival queuing approach (mqr/m/1) is modeled to find the optimal quantities of maximum inventory. the objective function is to minimize summation of ordering, holding and shortage costs under warehouse space, service level, and expected lost-sales shortage cost constraints from retailer and warehouse viewpoi...

An approach, based on queuing modeling and simulation, to resource allocation for a distributed production system is examined in the paper. The problem is formulated as an objective function minimization for a queuing network. The optimization is based on the combination of analytical modeling and simulation. The analytical model is used for primary evaluation and branching for the optimization...

This paper presents a set of simulation studies for comparing the performance of several flow-based scheduling algorithms, namely Weighted Fair Queuing, Self-Clock Fair Queuing, Start-Time Fair Queuing, Virtual Clock, Worst-case Fair Weighted Fair Queuing and Worstcase Fair Weighted Fair Queuing-plus. These algorithms are being considered for IP networks supporting Quality of Service (QoS).

In this paper provides the results of research on the development of the method of constructing a model of customs procedures in terms of the theory of queuing systems based on their description by means of functional modeling IDEF0. The technique is based on use of the integrated IDEF0 models and theory of queuing systems with the ability to transition from a description of the system in IDEF0...

This paper presents one of the features of DS (Differentiated Services) architecture, namely the queuing or congestion management. Packets can be placed into separate buffer queues, on the basis of the DS value. Several forwarding policies can be used to favor high priority packets in different ways. The major reason for queuing is that the router must hold the packet in its memory while the ou...

This paper proposes a bi-objective model for the facility location problem under a congestion system. The idea of the model is motivated by applications of locating servers in bank automated teller machines (ATMS), communication networks, and so on. This model can be specifically considered for situations in which fixed service facilities are congested by stochastic demand within queueing frame...

Various interpretations of the term packet loss rate is investigated. We compare different ways of estimating packet loss rate from simulations and also examine the applicability of common well understood simple queuing models. We show that using these queuing models to successfully estimate packet loss rate in a network with TCP traffic requires care. A network with independent sources perform...

This paper aims to find the optimal arrangement of consultation rooms in the specialist outpatient clinics of a hospital in Singapore to maximize the utilization factor. Doctors’ utilization and waiting time of the patients were also optimized in this research. This was done by building and validating queuing and simulation models to predict and model the real life variance and uncertainty in t...

paper provides a nontechnicul introduction to queuing network concepts, a short introduction to results of research into analytical modeling methodology, and u set of simple but typical examples that illustrute the upplication of that methodology to problems of computer perfbrmunce. The objectives of this paper are to introduce concepts of the theory of queuing networks, to describe an APL prog...

In this paper modelling and queuing analysis of variable-bit-rate (VBR) MPEG coded video sources in B-ISDN networks based on ATM are studied. Modelling is performed by examining a low pass version of the aggregate MPEG sequence, capable of capturing the video activity. A discrete state continuous time Markov chain is then proposed to approximate the aggregate MPEG traffic. The previous model is...