车牌自动识别系统设计与实现

车牌自动识别分为图像预处理、车牌定位、字符分割、字符识别四步。利用形态学变换对图像进行滤波聚类,HOUGH变换对车牌图像进行水平校正,BP神经网络的方法进行字符识别,最后基于DELPHI7．0环境下设计开发了车牌自动识别系统。     

Performance measures and data requirements for congestion management systems

Many metropolitan areas have started programs to monitor the performance of their transportation network and to develop systems to measure and manage congestion. This paper presents a review of issues, procedures, and examples of application of geographic information system (GIS) technology to the development of congestion management systems (CMSs). The paper examines transportation network performance measures and discusses the benefit of using travel time as a robust, easy to understand performance measure. The paper addresses data needs and examines the use of global positioning system (GPS) technology for the collection of travel time and speed data. The paper also describes GIS platforms and sample user interfaces to process the data collected in the field, data attribute requirements and database schemas, and examples of application of GIS technology for the production of maps and tabular reports.     

Grouping travelers on the basis of their different car and transit levels of use

Market segmentation studies in travel behavior research are ordinarily based on socioeconomic characteristics and personality traits. This study explores the usefulness of a different approach, where the actual overall mobility levels across different ground transportation modes, along with desired changes in the use of cars and transit, are used as clustering variables. Using a given mode can in fact influence the personal representation of that mode, which in turn has been proven to be a key element in transport behaviours. We form such multimodality-based clusters from two field studies, one involving employees of the French transportation research institute INRETS and the other a representative sample of residents of the US San Francisco Bay Area. We find that strong users of a given mode would like to bring more balance to their “modal consumptions” by decreasing the use of this mode more than the average, and increasing the use of the alternative mode. However, concerning ground transport travel budgets, the desire to travel more (or less) overall seems less strongly related to the composition of the modal balance. The US dataset shows also a greater latent demand for travel than the French one. Socioeconomic characteristics of the clusters could not explain the patterns that were found, confirming the importance of taking into account multimodality issues in travel behavior research. Some policy implications from these findings are finally reported.

既有铁路勘察评价与加固控制标准研究

研究目的:既有铁路经过多年运营后,需重新进行勘探评估,然后进行改造加固,以适应提速和电气化的需要。由于铁路规范缺乏数理统计方面的评价内容,对比了《建筑地基基础设计规范》和《公路工程质量检验评定标准》数理统计方法,并采用了填料分段、任务分段和强制分段三种方法对既有铁路进行了分段评估。研究结论:《公路工程质量检验评定标准》更适合既有铁路勘察指标的合理评价。以评价动态变形模量为例,结合铁路相关规范,提出了不需要加固改造段的动态变形模量最小值为40 MPa。分段法减小了加固长度,取得了较好的效果。根据数据统计与分段结果,Evd值与基床表层填料类型关系密切,A、B组填料在运营中难以保证较大的刚度,要获得较大的刚度,宜选用石灰改良土或水泥改良土。     

探究中国古代传统工艺美术对现代汽车制造工艺的影响

中国古代传统工艺美术具有较为漫长的发展历史,不但在制造业发展进程中占据至关重要的地位,对现代汽车制造工艺也有着关键性影响.针对于此,通过分析传统模范法与失蜡法对现代汽车塑料件注塑工艺的影响、传统经锦与纬锦工艺对汽车座椅面料制作工艺的影响、传统蜡染工艺对汽车皮纹菲林工艺的影响以及漆器木纹装饰在汽车结构中的实际应用,深入发...     

论1952年中国私人资本主义历史命运的转折

新中国成立后,中国私人资本主义发展曾有过一段繁荣期。1952年中国共产党基于国内外形势的变化,对私人资本主义展开了激烈的斗争。私人资本主义被工人阶级所领导的国家威力所压倒。从此中国私人资本主义的历史命运发生了重大转折,开始走向消亡。本文从历史的视角对中国私人资本主义历史命运的转折作了梳理。     

用中华传统义利观审视我国竞技体育中的"黑色现象"

我国竞技体育经过几十年的发展取得了可喜的成绩,但在比赛中时常出现诸如“假球”、“黑哨”等一些“黑色现象”。本文在对中华传统伦理义利观“以义为上,以义导利”的基本思想进行理性分析,对其赋予的现代意义进行探析的基础上,分析了“黑色现象”产生的原因,论述了传统伦理义利观对现代竞技体育事业发展的启示。旨在唤醒那些违背职业道德,违反国家法律,为了个人利益去损害他人或集体利益,在体育竞赛中“吹黑哨,打假球”的人们的良知,重建体育竞技场上的文明,促进我国体育健康有序的发展。     

基于改进模糊算子和形态学的舌体分割方法

舌诊是中医望诊中的重要内容,为了自动分析舌体的各项指标,必须将舌体从背景区域中分割出来.由于舌体与脸部等背景区域颜色较为接近,提出一种基于改进模糊算子和形态学的舌体分割方法,该方法根据由大津法确定的阈值定义隶属函数,取得了令人满意的分割效果.     

遗传算法在图像分割中的应用

图像分割是图像分析的预处理阶段,被认为是计算机视觉中的一个瓶颈.基于扩展的Otsu最优阈值图像分割方法,提出用一种改进遗传算法进行图像分割的方法,并给出了遗传算法中参数的设定.仿真结果表明,改进算法的计算速度不仅明显优于传统的Otsu方法,而且算法的分割效果也很好.