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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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| | 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 | | Sensitivity analysis for multimodal equilibrium assignment variational inequality model is proposed, and a numeral example is given. | | 本文对多模式均衡配流变分不等式模型进行了灵敏度分析 ,并给出了数值算例。 | | 文摘来源 | | Because the randomness of transportation information has not been considered in present practical transportation planning ,the accuracy or efficiency of transportation planning is depreciated.In order to overcome this drawback,the combinatorial model simulaneously involving OD distribution of trips in a transportation network and stochastic user equilibrium assignment(SUEA) of trips to routes in each OD pairs was developped on the basis of analysis on random ness in choices of route and destin... | | 目前交通规划实践缺乏考虑交通信息的随机性 ,从而降低了它所得结果的准确性 .为此 ,通过分析出行路径选择和目标选择的随机性 ,建立了交通网络 OD分布与随机平衡 (或均衡 )分配的组合模型 ,通过引入拉格朗日函数 ,证明了模型最优解满足随机用户平衡条件和 OD分布的要求且最优解是唯一的 ;最后给出了模型的方向搜索算法 | | 文摘来源 | |   | | << 更多相关文摘 |
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