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大规模路网
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  large scale railway network
     Comparision and study on empty car adjustment methods on large scale railway network
     大规模路网上空车调整方法的比较与研究
短句来源
     A Phase by Phase Optimized Model for Empty Car Adjustment in Large Scale Railway Network
     大规模路网上空车调整的分阶段优化模型
短句来源
     The reiterative adjusting method is introduced in the paper to solve the problem of empty wagon distribution on large scale railway network.
     针对大规模路网上的空车调配问题 ,提出了一种网络变换方法 -振荡法。
短句来源
     The result showed that using LINGO to solve this problem not only saves developing time also had obvious adventage in both computing time and precision aspects. Therefore the LINGO is a effective method to solve the problem of empty car adjustment on large scale railway network.
     结果表明,运用LINGO软件解决空车调整问题不仅节省开发时间,而且从运算时间和精度上都具有显著的优越性,是解决大规模路网上空车调整问题的有效途径。
短句来源
  “大规模路网”译为未确定词的双语例句
     Research on Dynamic Traffic Flow Forecasting Model and Algorithm in Large Scale Transportation Network
     大规模路网动态交通流预测模型和算法研究
短句来源
     The Section Center Optimization Method of Empty Car Adjustment on Large-scale Railway Network
     大规模路网上空车调配的区段中心优化法
短句来源
     CA-based micro-simulation tools, e.g. (TRANSIMS,) have been applied in large road networks successfully.
     以TRANSIMS为代表的微观仿真平台在大规模路网中得到了成功应用。
短句来源
     Based on features and requirements of urban road network layout,the conventional single objective optimization model for urban road network is extended in this paper. Through discretizing the continuous variables and introducing the bilevel planning method,this paper establishes bilevel planning model to optimize urban road network layout. The simulated Annealing algorithm is applied to resolve the model,and corresponding algorithm program was developed using language of Visual Basic 6.0.The algorithm is especially fit for solving large scale network optimization problem.
     针对市域公路网布局的特点和要求,对传统的市域公路网布局单目标优化模型进行了扩展,通过将连续变量离散化和引入双层规划方法,建立了市域公路网布局优化双层规划模型,并将模拟退火算法应用于模型的求解,采用Visual Basic6.0语言开发了相应的算法程序,该算法尤其适合求解大规模路网优化问题。
短句来源
     It is indicated by simulation that the presented method has achieved more accurate, real- time and quick guidance than GA and the balance problem of the quality and the efficient of seeking the answer has been solved.
     仿真试验表明:该方法的准确性、实时性和快速性优于基本遗传算法,并且大规模路网中求解效率和求解质量的平衡问题也得以解决。
短句来源
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  相似匹配句对
     A Phase by Phase Optimized Model for Empty Car Adjustment in Large Scale Railway Network
     大规模路网上空车调整的分阶段优化模型
短句来源
     Cluster's Application in Large-scale Traffic Network Simulation
     集群系统在大规模交通路网仿真中的应用
     Large-scale immigration.
     大规模移民。
短句来源
     On Large-scale Economy
     论大规模经济
短句来源
     Research on Capacity of Road Network
     路网容量研究
短句来源
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This paper proposes a kind of network switching method aiming at solving the problem of empty car distribution on a large scale railway network. As for a small scale empty car distribution its math model attributes to a kind of linear programming, i e., transportation problem. And the table task method can generate a good solution. But the calculation workload increases with the problem scale at a geometrical speed. As a railway network with thousands of loading and unloading stations, it is impossible to...

This paper proposes a kind of network switching method aiming at solving the problem of empty car distribution on a large scale railway network. As for a small scale empty car distribution its math model attributes to a kind of linear programming, i e., transportation problem. And the table task method can generate a good solution. But the calculation workload increases with the problem scale at a geometrical speed. As a railway network with thousands of loading and unloading stations, it is impossible to solve the problem with computer directly addressing several thousands of nodes. The section center optimization method is brought about to reduce the quantity of nodes by merging the empties flow of the neighboring intermediate stations of the main node stations, resulting in fewer nodes. Seen from calculation example, the section center optimization method has obvious advantages in solving the problem of empties distribution on large scale railway network by isomorphism transfer method , thus saving lots of time and space in calculation. So it is an effective approach to solve the problem of empties distribution on large scale railway network. A calculation case is provided at the end of the paper.

针对大规模铁路网上的空车调配问题 ,提出了一种网络变换方法。作为一般小规模的空车调配问题 ,其数学模型属于一类特殊的线性规划问题 ,即运输问题 ,表上作业法具有很好的求解效果。但由于该算法的计算量随着所需处理问题的规模的扩大呈几何速度增加 ,所以对于我国这样拥有数千个装卸站的路网来说 ,直接用计算机求解具有几千个节点的运输问题是相当困难的。文中提出了一种区段中心优化法 ,对于主要支点站周边的中间站进行车流归并 ,以压缩节点的数量 ,从算例上可以看出 ,区段中心优化法在解决大规模路网同构变换问题时具有比较明显的优点 ,节约了计算中所需的时间和空间 ,是解决大规模路网上空车调配问题的有效途径。文末给出了具体算例

The reiterative adjusting method is introduced in the paper to solve the problem of empty wagon distribution on large scale railway network. When calculating the node amount, we should merge the wagon flow at intermediate stations into the node stations. But it is impossible to know the direction of empty car movement before the optimum empties distribution scheme. The reiterative adjusting method is an preliminary solution without knowing the direction of empties on section and with an manually assigned direction...

The reiterative adjusting method is introduced in the paper to solve the problem of empty wagon distribution on large scale railway network. When calculating the node amount, we should merge the wagon flow at intermediate stations into the node stations. But it is impossible to know the direction of empty car movement before the optimum empties distribution scheme. The reiterative adjusting method is an preliminary solution without knowing the direction of empties on section and with an manually assigned direction of the empties. In this way the car flows at intermediate stations are merged into the preceding technical station. And then the initgial solution is adjusted continuously and is reiterated and computed repeatedly until we end up with a similar result. The paper presents cases of reiterative adjusting method.

针对大规模路网上的空车调配问题 ,提出了一种网络变换方法 -振荡法。计算空车调配方案时 ,为了压缩参与计算的支点数量 ,要把中间站上的空车流 ,按照区段上的空车排空方向 ,归并到相应的支点站上去 ;但是 ,某区段上的空车排空方向 ,在最优空车调配方案确定之前 ,是无法知道的。振荡法是在事先不知道某个区段空车排空方向的前提下 ,预先人为指定该区段的空车排空方向 ,作为初始方案 ,使得区段上中间站的空车流 ,能够按照一定的原则归并到前方技术站 ;然后对初始方案进行计算 ,对区段空车方向不断进行调整 ,反复振荡 ,反复计算 ,直到指定的空车方向与计算结果相符合时为止。文中给出了振荡法的算例

In this paper we made a survey of cellular automata(CA) traffic models which can be classified into single-lane, (multi-lane) and city traffic models. NaSch model, the prominent single-lane model, and its modifications, can reproduce (many) characteristics of traffic. Some two-lane traffic rules were presented to implement incentive and security criterion in (lane-changing.) Some can generate anomalies such as density inversion. City traffic models have been used to investigate (phase) transition. A trend is...

In this paper we made a survey of cellular automata(CA) traffic models which can be classified into single-lane, (multi-lane) and city traffic models. NaSch model, the prominent single-lane model, and its modifications, can reproduce (many) characteristics of traffic. Some two-lane traffic rules were presented to implement incentive and security criterion in (lane-changing.) Some can generate anomalies such as density inversion. City traffic models have been used to investigate (phase) transition. A trend is the combining of city traffic and multi-lane models. CA-based micro-simulation tools, e.g. (TRANSIMS,) have been applied in large road networks successfully. However, CA approach has shortcomings in method- (ology,) some experimental properties have not been reproduced, and the application of CA simulation is not popular too.

对基于元胞自动机的交通模型进行综述,将其分为单车道模型、多车道模型和城市交通模型三类。NaSch模型是最重要的单车道模型,经过改进能够再现许多重要的交通流特性。换道是多车道模型的核心,围绕着动机产生和安全要求提出了多种换道规则,最近的模型能够再现密度反转等异常现象。城市交通模型从系统角度研究了网络交通流的相变规律,近期出现了网络模型与多车道模型相结合的趋势。以TRANSIMS为代表的微观仿真平台在大规模路网中得到了成功应用。然而CA交通模型在方法论上存在不足,一些实证规律未能再现,其实际应用也较少。

 
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