In this thesis, firstly, introduce the topic's origin and background, the research significance, the researching scope and goal, point out the R&D process reengineering reason.

本文首先介绍选题的来源、背景和研究意义，指出论文的主要研究内容与目的，明确研发流程再造的动因。

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This paper discusses the attraction between the origin and destination(O-D), the method of O-D distribution and its application.

本文对O-D分布方法中两结点间的相对吸引力和分布模型进行了探讨。

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The algorithm is applicable to large-scale road network with many to many origin-destination and time-dependent O-D volumes. Simulation results prove the validity of both the model and the algorithm.

该算法适用于多起点、多讫点以及O-D量随时间变化路网的动态系统最优交通分配，仿真结果验证了算法的有效性。

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In 2005 the Indian government allowed the children and grandchildren of those born in India (as well as those who'd given up citizenship) to apply for lifelong visas, making it much easier for people of Indian origin to move to the country.

BBC: Chasing the Indian Dream