Human and bicycle detection system using range sensor

This paper presents a full-scale solution to the detection of the traffic data using laser device. Range images, gathered by a particular laser camera, are used in the multi-threshold segmentation. The multi-threshold segmentation is based on the height of the moving objects. In order to get the precise height of the moving objects, mapping of the original terrain is performed on the first step. On each layer, the clustering algorithm called iteration-self organizing data analysis techniques algorithm (ISODATA) is conducted afterwards. Kalman filtering technique is applied to recognize and track the moving objects. Extensive experiments show that these algorithms are effective in object recognition and tracking, as well as robust in the applications.     

A total generalized optimal velocity model and its numerical tests

A car-following model named total generalized optimal velocity model （TGOVM） was developed with a consideration of an arbitrary number of preceding vehicles before current one based on analyzing the previous models such as optimal velocity model （OVM）, generalized OVM （GOVM） and improved GOVM （IGOVM）. This model describes the physical phenomena of traffic flow more exactly and realistically than previous models. Also the performance of this model was checked out by simulating the acceleration and deceleration process for a small delay time. On a single circular lane, the evolution of the traffic congestion was studied for a different number of headways and relative velocities of the preceding vehicles being taken into account. The simulation results show that TGOVM is reasonable and correct.     

常鲇航线沅江港千吨级码头现浇面板磨耗层龟裂防治施工技术

分析了码头现浇混凝土面板磨耗层龟裂原因,通过沅江港千吨级码头磨耗层混凝土施工实践,介绍了磨耗层龟裂的防治措施和施工方法。     

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在对现有公交系统不足进行分析的基础上，为提高公交行业的服务水平和管理水平，提出了实施智能公共交通系统、优先发展公共交通战略的技术保障公交信息智能化管理系统，即建立一个低成本、高效益、科学管理、安全生产的现代化智能公交信息服务系统，并给出了系统的实施框架及关键理论和技术的解决方案。     

基于BP神经网络的旅游交通安全评价分析研究

阐述了BP神经网络的基本理论、算法、缺陷及改进方法，通过实例对旅癖交通安全进行研究。选择合适的学习样本及参数进行训练，并获得较好的评价结果。为游客的旅游安全及相关部门的管理者提供了理论依据。     

哈市道路破损原因及防治措施的探讨

介绍了哈尔滨市市内道路出现破损的原因及相应的防治措施。     

A Closed Form Solution to Segment 3D Motion Using Straight-line Optical Flow

A closed form solution to the problem of segmenting multiple 3D motion models was proposed fromstraight-line optical flow. It introduced the multibody line optical flow constraint (MLOFC), a polynomial equation relating motion models and line parameters. The motion models can be obtained analytically as the derivative of the MLOFC at the corresponding line measurement, without knowing the motion model associated with that line. Experiments on real and synthetic sequences were also presented.     

Comparison of several traffic forecasting methods based on travel time index data on weekends

Traffic forecasting provides the estimation of future traffic state to help traffic control,travel guide,etc. This paper compared several widely used traffic forecasting methods,and analyzed each one's performance in detail to make conclusions,which could redound to researchers choosing an appropriate traffic forecasting method in their own works. Compared with conventional works,this paper creatively assessed the performance of traffic forecasting methods based on travel time index (TTI) data prediction,wh...     

高速公路收费标准制定方法探讨

为了促进已建高速公路的经营管理,合理配置社会资源,实现高速公路的可持续发展,对影响高速公路收费标准的多种因素进行了分析,探讨了收费总额的预测,并结合影响高速公路收费标准和各种因素和收费总额建立了收费标准模型。     

连云港海域“达维”台风风暴潮数值模拟*

“达维”台风是建国以来登陆长江以北地区最强的台风。应用Jelesnianski台风参数模型、MIKE-SW波浪模型和MIKE-FM潮流模型,研究该台风在江苏海域登陆过程中台风浪、风暴潮的分布特征。计算结果表明,台风参数模型和台风浪模型验证较好,能够为风暴潮模拟提供准确的动力条件。台风过境期间,连云港海域最大风速超过40 ms,产生明显的海面强烈上升现象,台风中心附近水域最大风暴增水为1.7～1.8 m,高潮时刻风暴增水为0.6～0.7 m。该模拟系统能够准确模拟台风过境期间连云港海域风暴潮变化过程,对防灾减灾的数值预报具有重要价值。