基于词汇链的应急预案主题抽取方法研究

本文针对应急预案自动主题抽取的需求，采用词汇语义相关度计算的方法，构建了一个基于词汇链算法且符合人的主观感受的主题抽取模型。模型根据应急预案文本的特点，运用了自然语言处理技术，改进了原始的词汇链生成算法，提出了一种多因素词语权重算法。通过与人工抽取主题词的实验结果相比较，该主题提取模型在查全率和查准率上都取得了较好的效果。

Coordinating control of multiple rigid bodies based on motion primitives

This paper studies the problem of coordinated motion generation for a group of rigid bodies. Two classes of coordinated motion primitives, relative equilibria and ma- neuvers, are given as building blocks for generating coordi- nated motions. In a motion-primitive based planning frame- work, a control method is proposed for the robust execution of a coordinated motion plan in the presence of perturba- tions. The control method combines the relative equilibria stabilization with maneuver design, and results in a close- loop motion planning framework. The performance of the control method has been illustrated through a numerical sim- ulation.

新建高速铁路客运站站址选择及站区规划布局研究

文章在以往各项相关研究的基础上,对影响新建高速铁路客运站站址选择与站区开发的优势性与限制性因素进行了整理与分析,探讨了各因素间的关联性,提出"三确定两要求"的选址策略。同时,在强调站址选择与站区规划统筹考虑的基础上,深入研究交通、产业以及城市的融合发展模式,归纳总结了站区规划的七大理念与原则,并在考虑站区功能用地划分以及围绕站区的城市组团联系的基础上,剖析与站区布局相协调的"两圈四区"的内部圈层特征以及轴带式的外部扩展形式。