2005年PHYSICAL REVIEW E 71卷上的两篇交通流的文章

水寿松

[这个贴子最后由水寿松在 2005/02/28 08:50pm 第 1 次编辑]

Effects of changing orders in the update rules on traffic flow
Yu Xue(薛郁)1,2,* Li-yun Dong（董力耘）3 Lei Li（雷丽）3 and Shi-qiang Dai（戴世强）3
1Department of Physics, Beijing Normal University, Beijing 100875, China
2College of Physics, Engineering and Technology, Guangxi University, Nanking 530004, China
3Shanghai Institute of Applied Mathematics and Mechanics, Shanghai University, Shanghai 200072, China
Received 19 September 2004; published 24 February 2005
Abstract:
Based on the Nagel-Schreckenberg sNaSchd model of traffic flow, we study the effects of the orders of the evolutive rule on traffic flow. It has been found from simulation that the cellular automaton sCAd traffic model is very sensitively dependent on the orders of the evolutive rule. Changing the evolutive steps of the NaSch model will result in two modified models, called the SDNaSch model and the noise-first model, with different fundamental diagrams and jamming states. We analyze the mechanism of these two different traffic models and corresponding traffic behaviors in detail and compare the two modified model with the NaSch model. It is concluded that the order arrangement of the stochastic delay and deterministic deceleration indeed has remarkable effects on traffic flow.
DOI: 10.1103/PhysRevE.71.026123
PACS numberssd: 05.70.Ln
*Email address: yuxuegxu@gxu.edu.cn

水寿松

Relaxation dynamics in congested traffic
Najem Moussa*
LMSP, Département de Physique, FST, Boîte Postale 509, Boutalamine, Errachidia, Morocco
Received 5 July 2004; published 24 February 2005
Abstract：
We investigate the relaxation dynamics in congested traffic when starting from the “megajam” initial condition sall cars standing in one big cluster of density 1d in the framework of the traffic model proposed by
Nagel and Schreckenberg. On the one hand, a simple comparison of the time evolutions of some relevant traffic quantities shows that the slowest relaxing quantity is the density of “go and stop” cars rather than the average velocity of cars. On the other hand, we find that the relaxation time diverges in the form of a power law t< t0p&#8722; b. A simple theoretical argument predicts that the exponent “ b” is equal to 1. This prediction is consistentwith the numerical result.
DOI: 10.1103/PhysRevE.71.026124
PACS numberssd: 89.40.2a, 02.60.Cb, 05.65.1b, 45.70.Vn
*Email address: najemmoussa@yahoo.fr

itslu

多谢版主！顺便问一下Beijing Normal University是哪个大学啊

水寿松

北京师范大学，你现在动手的少了，这个问题也问，嘿嘿！