查询词典 intersections

This paper aims at the prominent issue that current models of spatial topological relations can not represent complex object, among which 9-Intersections Model (9IM) is well known. Therefore, taking cadastral data as example, one model of topological relations between complex and spatio-temporal objects based on 9IM is put forward. And the improved sweep-line algorithm is designed. Specific studies as follows:(1)According to the concepts of point set topology, the author distinguishes the complexity of the object, redefines the spatial point, line and region. For instance, in the simple region, concave one is more complex than convex, composite regions can be composed of many parts or with holes, and so on.

本文针对当前空间拓扑关系模型无法表达复杂对象的突出问题，以地籍对象为实例，以9I模型为基础，探索了一种适合复杂对象和时空对象的拓扑关系表达模型，较好地解决了地籍对象中各类要素间拓扑关系的描述和应用，实现了地籍变更中变化语义类型的推理和历史回溯；通过对现有的拓扑关系计算方法进行了改进，设计了相关算法，给出了C语言程序示例；最后通过实验系统的实现，验证了模型和算法的可行性。

Aiming at traffic disorder and safety problems at skew intersections, the paper puts forward a new idea setting vehicle-waiting area for entry vehicles from an acute angle, which can make spur track vehicles across the intersection by two phases.

针对斜交十字交叉口存在的安全隐患等问题，提出为锐角进入交叉口的次路车流设置车辆待行区，使支路车流可以分两个阶段通过交叉口。

Test results at 20 real intersections show that the ratio of correct stabling siding recognition reaches up to 90%; and the ratios of recognition of traffic lights and divided characters are 85% and 97%, respectively.

通过20个实际交叉口场景测试数据验证，采用所提出的方法，停车线检测正确率达90%，信号灯检测正确率为85%，在信号灯字符正确分割出来的基础上，字符的识别率达97%。

The ideal values of the urban drops from divine spiritual fields to common customs, the holy temples, former urban's spiritual symbolics are replaced by skyscrapers, pillars, speedways and intersections.

城市的理想价值从神圣的精神领域又重跌到世俗领域，原先作为城市精神象征的圣殿规模缩小了，取而代之的是摩天大楼的工业庞然大物，混凝土、钢铁和玻璃的柱子、高速公路、立交桥以其咄咄逼人的架势主宰着城市景观的价值体系——城市原有的历史厚重感、文化魅力被无情铲平，城市失去沉甸甸的历史底韵之后，不再是市民魂牵梦绕的家园。

Instead, they would be stored for all intersections with geometry on the ray from the camera to infinity.

相反，他们将储存的所有路口与几何上的线从相机至无限远。

With the development of China's economy, traffic lights have been placed at all major intersections.

随着中国经济的发展，所有重要的交叉路口都安装了交通信号灯。

Experiments show that the new method can improve the efficiency of computing triangular mesh intersections based on space division.

实验的结果表明，改进的算法提高了采用空间分解进行三角网格求交的计算效率。

With the principle of typification, the alternative roads and intersections are surveyed and compared to determine the appropriate experiment site.

1以典型性为原则，实地勘测备选试验路段和交叉口，比较和确定试验地点。

The algorithm first takes count of the browse number of each access sequence by overlapping operation,then unites and deletes the unfrequent page items according to minimum support degree given by users,afterwards sifts getting the intersections of each two user access pattern and gives birth to candidate grequent access patterns,at last,adds up the number of each candidate frequent access pattern by scanning the original database.

该算法首先对用户项集进行重叠操作统计浏览次数，然后合并，依据用户给出的最小支持度删除原项集中的非频繁页面元素，并对两两用户项集筛选生成候选频繁项集，最后扫描数据库，统计各个候选频繁项集的支持度计数。

With studying the sixteen intersections in Kun Ming, a fuzzy clustering method in evaluation of traffic safety is proposed, based on traffic conflict regarding the ratio of traffic conflict and mixed passenger car unit as stylebook character, which provides a new evaluation method for safety evaluation of intersection.

以昆明市的16个交叉口为研究对象，通过运用模糊C一均值聚类方法，引入交通冲突与混合当量交通量的比值作为样本特征，提出对具有分时段交通冲突和交通量数据为依据的交叉口进行安全评价的交通冲突模糊聚类评价法，为交叉口的安全评价提供一种新的研究途径。

Do not gum up the work by telling mother what we are going to do .

别告诉母亲我们要干的事，那会把事情搞糟的。

In recent years, application of the partial prestressed concrete beam s is developed.

近年来，随着部分预应力砼梁应用的推广，发现我国规范所采用的名义拉应力法的计算结果不稳定。