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E.G. Campari G. Levi 《The European Physical Journal B - Condensed Matter and Complex Systems》2000,17(1):159-166
We present results relative to a simple cellular automata model without periodic boundary conditions for an highway with on-ramps.
Simulations performed with this model reproduce experimental phenomena observed in traffic such as free flow, synchronized
flow, congested flow, lane inversion, forward and backward propagating waves. On-ramps play the important role of nucleation
points for the dynamic features of traffic.
Received 4 February 2000 and Received in final form 5 May 2000 相似文献
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A study of ionic conductivity in silver borate glasses is presented, which includes (i) a full characterization of the ion transport properties in the AgI:Ag2O:B2O3 glasses, (ii) results for glasses where iodine is totally or partially substituted by another halide, (iii) mixed-cation effects. A substantial portion of the paper discusses the relationship between local order and ion transport properties of borate glasses and vitreous electrolyte systems. 相似文献
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G. Chiodelli G. Flor A. Magistris G. Campari Vigano' M. Villa 《Journal of Thermal Analysis and Calorimetry》1983,28(2):273-278
This paper studies the thermal stability and the glass formation region the Agl-Ag2O-B2O3 system. The miscibility range of the components has been investigated by direct visual observation at 1000°C, i.e. where the system is liquid over the entire compositional range. By combining X-ray and differential thermal analysis (DTA) measurements, the large region of glass formation of the system has been determined. The dependence of the glass transition temperature upon the glass composition is discussed. Series of glasses have been annealed over extended time intervals above the glass transition temperature in order to characterize the “equilibrium” phase diagram for the system. Analysis of the annealed materials shows that several crystalline compounds form upon annealing. 相似文献
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E.G. Campari G. Levi 《The European Physical Journal B - Condensed Matter and Complex Systems》2002,25(2):245-251
Highway traffic as simulated with a simple cellular automata model has been analysed in a search for self-similarity in the
behaviour of car density and car flow as a function of space. Fractal dimensions between 1.5 and 1.6, depending on the simulation
characteristics, have been measured with a box counting algorithm. The self-similarity spans over about 2 orders of magnitude.
A comparison with experimental data is suggested.
Received 23 April 2001 and Received in final form 28 September 2001 相似文献
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Ohne Zusammenfassung 相似文献
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