to improve the efficiency of hospital, reduce patients’ waiting time, as well as meet patients’ satisfaction, the optimization of patients’ queuing system which is based on the knowledge of queuing theory has the practical significance in the use of medical equipments. Based on the relevant data of the usage of Bultrasound in a hospital, the distribution model of queuing theory has been analyze...

Based on the hierarchical characteristics of passengers transfer behavior and the statedependent queuing model, the D-M/G/C/C queuing network simulation model was put forward for simulating the coordination of subjective passenger behavior and objective distribution environment. Then, the generation method and algorithm of the model is elaborated. In case study, the simulation results are consi...

A fuzzy queuing coherent hierarchical location-allocation model is developed for congested systems. The parameters of the model are approximately evaluated and stated as fuzzy-numbers. The coverage of demand nodes is also considered in an approximate manner and is stated by the degree of membership. Using the queuing theory and fuzzy conditions, a coherent hierarchical model is developed for th...

Queuing theory is used to model many systems in different fields in our life; it is used in simple systems and complex ones. The main idea in the application of a mathematical model is to measure the performance measures of the application in order to improve the performance of the system. This paper will present an analytical method and simulation modelin estimation the appropriate model for a...

This paper investigates the use of an efficient bandwidth management scheme by implementing cross-layer M/M/1 queuing model. Strict Open System Interconnection (OSI) layer to layer communication problem is solved by introducing a common database that automatically synchronizes the status of each OSI layer to all the other layers. First-In-First-Out (FIFO) queuing data structure and Priority Que...

A new concept of subway station capacity (SSC) is defined according to the gathering and scattering process. A queuing network analytical model of station is created for calculating SSC, which is built by M/G/C/C state dependent queuing network and discrete time Markov chain (DTMC). Based on the definition and the analytical queuing network, a SSC optimization model is developed, whose objectiv...

This paper investigates the use of an efficient bandwidth management scheme by implementing cross-layer M/M/1 queuing model. Strict Open System Interconnection (OSI) layer to layer communication problem is solved by introducing a common database that automatically synchronizes the status of each OSI layer to all the other layers. First-In-First-Out (FIFO) queuing data structure and Priority Que...

abstraCt This article deals with the simplest abandonment model in which the customer's patience is exponentially distributed and the capacity of the system is unlimited. Sze (1984, 229-249) has designed a queuing model for the telephone operating system without abandonment. The most common model which supports the workforce management of the telephone centre is M/M/N/B and some special cases c...

The Barabási’s priority queuing model (Barabási, Nature 435:207, 2005) and its variants have been extensively studied to understand heavy-tailed distributions of the inter-event times response observed in various empirical analyses human dynamics. In this paper, we focus on effects deadlines assigned tasks a queue fixed size response-time distributions. Here, time is defined as interval between...