Tests for SETAR-type non-linearity in time series have recently been proposed by , W. S. Chan and Tong (1986, Luukkonen et a/. (1988 and . In this paper we consider the relative performance of these tests. KEY WORDS Non-linear time series SETAR-type non-linearity CUSUMS Lagrange-multiplier tests Lik
A comparison of waiting time approximations in series queueing systems
β Scribed by Daniel G. Shimshak
- Publisher
- John Wiley and Sons
- Year
- 1979
- Tongue
- English
- Weight
- 765 KB
- Volume
- 26
- Category
- Article
- ISSN
- 0894-069X
No coin nor oath required. For personal study only.
β¦ Synopsis
Abstract
The determination of steadyβstate characteristics in systems of tandem queues has been left to computer simulation because of the lack of exact solutions in all but the simplest newtorks. In this paper, several methods developed for approximating the average waiting time in singleβserver queues are extended to systems of queues in series. Three methods, due to Fraker, Page, and Marchal, are compared along with results gathered through GPSS simulation. Various queueing networks with Erlangian service distributions are investigated.
π SIMILAR VOLUMES
A polling system comprising n queues and a single server is considered. Service is performed according to an elevator scheme under the globally gated regime. The problem of arranging the channels to minimize a measure of the variability of the waiting times is addressed.
## Abstract Recently many studies have attempted to model fluvial system development over a variety of geographical and temporal scales. It is generally recognised that one of the main problems, especially in studies over longer timescales (>100βka), is the reconstruction of a robust palaeodischarg