In queueing theory, a discipline within the mathematical theory of probability, an M/M/1 queue represents the queue length in a system having a single server, where arrivals are determined by a Poisson process and job service times have an exponential angelphone.tk model name is written in Kendall's angelphone.tk model is the most . Spelling. The spelling "queueing" over "queuing" is typically encountered in the academic research field. In fact, one of the flagship journals of the profession is named Queueing Systems.. Single queueing nodes. Single queueing nodes are usually described using Kendall's notation in the form A/S/C where A describes the time between arrivals to the . The purpose of this page is to provide resources in the rapidly growing area computer simulation. This site provides a web-enhanced course on computer systems modelling and simulation, providing modelling tools for simulating complex man-made systems. Topics covered include statistics and probability for simulation, techniques for .