According to different scale,structural layout and land use characteristics of cities,to give priority to the development of public traffic energetically,advisably develop private cars in reason,establish a urban traffic system that can reduce traffic congestion,deduce traffic pollution,save energy,be propitious to urban environment and be composed of diversified urban transportation tools.

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In the research of traffic congestion forecast, dynamic forecast models for traffic congestion at signalized intersection are proposed.

在阻塞預(yù)測(cè)研究中，文章建立了城市信號(hào)交叉口交通阻塞動(dòng)態(tài)預(yù)測(cè)模型自拍视频网。

The method to configure RED parameters based on network properties is also presented. Simulations show that the modified Random Early Detection algorithm really performs better than the original Random Early Detection algorithm and can work for a much wider range of traffic. Finally, whether the assured service mechanisms i. e. an edge router tags every arriving packet of a TCP flow based service profile and core router drops packets differently at congestion using active queue management scheme is possible to provide a throughput consistent with target rate, is investigated under different network scenarios. Different factors including target rate tagged algorithm, RIO algorithm and TCP congestion control mechanism how to affect the throughput of an assured service TCP flow are examined. Based on a fluid model. we then derive a model of an assured service TCP flow, which is the function of round trip delay, packet loss rate and token bucket parameters. Based on this model, we observe that in some cases it is possible to regulate the token bucket parameters to gain a consistent throughput with the target rate, while in other cases there exist ranges of values of the achieved rate for which the token parameters have no influence. With the latter, some modified TCP congestion control mechanisms to assure TCP throughput are proposed.

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lead an indolent life：過著懶散的生活

5,歸屬感 a sense of belonging | 6,過著懶散的生活 lead an indolent life | 7,交通阻塞 traffic congestion