HXD1型机车牵引装置上的螺栓连接

分析HXD1型机车牵引座的螺栓连接方式中的特殊点及其机理,并通过受力计算说明了衬套对螺栓使用可靠性的影响。     

南京地铁突发事件应急处置机制建设

介绍南京地铁1号线突发事件应急处置体系的建设,重点是组织机构的设置、应急救援队伍的建设、应急救援设备的配备、应急预案的规范管理等。结合在运营过程中的实际应用,对应急处置体系及时修改完善,为建立科学的城市轨道交通突发事件应急处置体系、提升应急处置能力提供参考。     

广州地铁车站照明系统节能研究

主要探讨广州地铁1、2号线车站照明系统的节能措施,对目前市场的节能产品进行测试和调研;从现实情况、成本核算和安全等方面进行对比。对地铁车站照明系统的节能模式、节能灯具选型进行分析,认为照明节能具有节能率高、能保持车站原有的装修风格等特点,是理想的节能方式。     

发展电动汽车应有利于推动环保和清洁能源

今天的电动汽车还只是疑似环保,在大力推广电动车辆的同时,我国电网还须大力提高绿色能源的比例;为有效解决和完善蓄电池生产、储运、管理和回收的污染,须将更多的资源投入蓄电池各环节的环保措施和新能源的研究。     

电动汽车组合仪表开发

介绍电动汽车组合仪表的一些基本知识，用开发实例来说明电动汽车组合仪表上必须显示的最基本的信息。     

unning status of asynchronous motors by

otection,under-voltage protection and so on,can measure every kind of electricity,and can process the function of telecontrol,telemetering and telecommunication.The experimental result shows that the device has the characteristics of good real-time,high EMC,small volume and easy implementation.asynchronous motor relay;AT91FR40162;alternating current s     

Steady-state steering of a tilting three-wheeled vehicle

The design of a narrow-track enclosed vehicle for urban transport was the subject of the CLEVER project. Due to its narrow track and requirement for car-like controls, an actively controlled tilting system was integrated into the chassis to allow for high lateral accelerations without rolling over. The cornering behaviour of this unique vehicle concept is investigated and compared with the ideal Ackermann response. The steer kinematics of this 1F1T (one front wheel, one wheel tilting) configuration are assessed through the use of a steady-state steering model, with attention focused on how steer parameters such as tilt axis height and inclination can be tuned to provide the required response. A prototype vehicle was designed and built and the results of experimental testing are presented to illustrate the real balancing performance of the combined steering and tilting approach used for the CLEVER vehicle. The experimental results follow the trends demonstrated in the model.     

高职院校汽车领域“1+X”证书制度项目探究——以《汽车电子电气与空调舒适系统技术》中级模块为例

根据国务院印发的《国家职业教育改革实施方案》要求,文章首先分析1+X证书制度实施背景及现状实施情况,然后从完善职业技能等级标准体系,构建深度融合体系,教学过程与企业生产、学生就业对接,产教融合落地生根等三方面进行阐述,最后以本院汽车运用与维修专业针对《汽车电子电气与空调舒适系统技术》中级模块具体培训实例进行分析探究。     

MR IMAGING OF THE PANCREAS

Objective To evaluate the ability of showing the pancreatic diseases on various MRI sequences. Methods Eighty-four subjects included 50 normal individuals and 34 patients(22 patients investigated for pancreatic neoplasia and 12 pancreatitis) were presented. The MR protocol included conventional SE T1WI, FSE T2WI, Pre-and post-contrast T1-weighted fat-suppressed and GRE imaging. Results The best diagnostic information was provided by T1-weighted fatsuppressed imaging before and after gadolinium enhancement on 27 of 34 cases with abnormal pan creas, followed by immediately postcontrast GRE images. Precontrast GRE imaging better showed the features of a cute pancreatitis. FSE T2WI obviously exhibited islet cell tumor and metastases of liver from pancreatic adenocarcino ma. Conclusion The standard MR protocol included T1-weighted fat-suppressed image and dynamic GRE imaging.     

一类支持向量机在车辆识别中的应用

支持向量机分类方法已经在实际应用中显示了良好的学习性能,其最初是针对二值分类问题提出的.如何有效地将支持向量机推广到多值分类中一直是人们关注的课题.通常的多值分类问题是一系列二值分类来实现,可是这将导致较高的计算复杂性.本文将一类支持向量机推广到多值分类情况,并将其应用于车辆识别中.仿真实验结果表明了所给方法的可行性及有效性.