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|  | | 为了更好的帮助您理解掌握查询词或其译词在地道英语中的实际用法,我们为您准备了出自英文原文的大量英语例句,供您参考。 | |
Recommended future research includes improved algorithms for stochastic and dynamic equilibrium assignment, new methods for calibrating assignment models, and the use of Geographic Information Systems (GIS) technology for data and model management.
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The extension to incorporate the time dimension through the use of dynamic equilibrium assignment methods is proposed as an enhancement that is necessary in order to produce realistic models.
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The second approach uses mathematical programming techniques associated to equilibrium assignment problems to estimate a trip matrix in congested areas.
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An equilibrium assignment is achieved when expected delays of active strategies are minimal, for every origin-destination pair.
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For each approach a different optimization model and some solution algorithms are proposed; both models and algorithms are based on the assumptions of within-day static system and stochastic user equilibrium assignment models.
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| | In this paper, a new estimation method of origin-destination trip matrix from link traffic volumes under equilibrium traffic state is described. Combining wardrop equilibrium assignment model with maximizing entropy model, a iterative algorithm is put forward. The computation example shows that the result is satisfactory, having better convergence. Meanwhile the method makes it possible to realize on-line traffic control. | | 本文讨论了在均衡交通状态,即拥挤交通的情况下,根据路段检测流量估计OD矩阵的新方法,将Wordrop分配模型与极大熵模型相结合提出了相应的迭代算法,实例表明,这一方法合理可行,皆具有较好的收敛性,为城市交通的计算机在线管理和控制提供了快速有效的基础数据。 | | 文摘来源 | | Let us assume that a city is divided into two partxby a river (e,g. Wtihan and Chongqing inChina)and more than two road brldges have been built over the river,This paper presents the mathematicalmodel and solution algorithm of bridge tolls under the traffic equilibrium assignment with classes of multi-ve-hicle. This algorithm is developed in order that the revenue is maximized and/or the total travel time is mini-mized.An example with two bridges and three classes of vehicle is used to test the ... | | 假定一个城市被一条河流分为两部分(如我国的武汉、重庆等市),河上至少架设了两座公路桥梁。本文研究在交通平衡状态下,怎样制定车辆通过桥梁的收费水平,使获得的总收入最大、乘客的总行驶时间最少。对多车种问题,研究了等价的数学模型和算法。还对一个含两座桥梁与三种车型的简单算例,进行了计算与分析。 | | 文摘来源 | | The Wardropian UE(User'S Equilibrium)traffic assignment method is a predominant one used in urban road network planning practiaces, however, it is not suitable for Chinese mixed urban traffic networks containing vehicle and non-vehicle traffic flows. Therefore, a mixed deterministic UE assignment model and its algorithms are developed based on the interpretation of the reacting mechanism between vehicle and bicycle traffic flows in this paper. This model, whose uniqueness and equivalance t... | | Wardrop用户均衡UE交通分配方法是城市交通规划实践中广泛应用的交通分配方法,然而,该法并不适用于我国机动车与非机动车混合行驶的城市交通规划。因此,根据机动车与自行车交通流之间作用机制的解释,建立了混合式UE分配模型及其算法。这个模型,已证明等价于WardropUE原则,其解又具唯一存在性,对于混合交通情况,是正常UE模型的扩展。最后,介绍了仅有两个路段的简单交通网络的混合均衡分配程序。 | | 文摘来源 | |   | | << 更多相关文摘 |
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