校企合作宝马培训基地建设的探索

文中介绍了宝马广州培训基地的硬件建设、内涵建设情况以及校企合作情况,突出“校企合作、工学结合”的实训基地建设主题,对我国高校汽车专业实训基地建设具有重要参考价值。     

宝马E65电源管理系统

根据福州中宝汽车销售服务有限公司(宝马4S维修点)一年的下厂经历和资料,介绍宝马汽车电源管理系统作用、组成和类型,阐述宝马E65电源模块管理系统PM的组成、电路、主要零部件作用、工作参数、工作过程和工作条件。     

无线局域网WLAN的安全性分析

本文从多个方面分析了WLAN的安全缺陷,并概述了WEP、WPA、CCMP/AES、WAPI等WLAN安全问题的标准和技术。提出了针对WLAN安全缺陷的一些解决方案。     

G318（西藏境）竹卡澜沧江大桥线形控制与监测

在连续刚构桥施工中,对线形的有效控制是桥梁在不同施工温度及工况下成功合拢及平顺的保证。通过对G318（西藏境）竹卡澜沧江大桥实际施工中的线形控制及监测,探讨了该连续刚构桥梁施工过程中线形控制和监测的要点和方法,为同类桥梁工程的线形监测提供参考。     

《道德经》对高职院校学生心理健康教育的作用探讨

文章从自我意识、情绪、人格等方面分析了高职院校学生存在的心理问题,并借鉴《道德经》的教育思想,阐述其对高职院校学生心理的健康发展和形成所能起到的指导作用.     

Multi-modal traffic signal control with priority,signal actuation and coordination

Both coordinated-actuated signal control systems and signal priority control systems have been widely deployed for the last few decades. However, these two control systems are often conflicting with each due to different control objectives. This paper aims to address the conflicting issues between actuated-coordination and multi-modal priority control. Enabled by vehicle-to-infrastructure (v2i) communication in Connected Vehicle Systems, priority eligible vehicles, such as emergency vehicles, transit buses, commercial trucks, and pedestrians are able to send request for priority messages to a traffic signal controller when approaching a signalized intersection. It is likely that multiple vehicles and pedestrians will send requests such that there may be multiple active requests at the same time. A request-based mixed-integer linear program (MILP) is formulated that explicitly accommodate multiple priority requests from different modes of vehicles and pedestrians while simultaneously considering coordination and vehicle actuation. Signal coordination is achieved by integrating virtual coordination requests for priority in the formulation. A penalty is added to the objective function when the signal coordination is not fulfilled. This “soft” signal coordination allows the signal plan to adjust itself to serve multiple priority requests that may be from different modes. The priority-optimal signal timing is responsive to real-time actuations of non-priority demand by allowing phases to extend and gap out using traditional vehicle actuation logic. The proposed control method is compared with state-of-practice transit signal priority (TSP) both under the optimized signal timing plans using microscopic traffic simulation. The simulation experiments show that the proposed control model is able to reduce average bus delay, average pedestrian delay, and average passenger car delay, especially for highly congested condition with a high frequency of transit vehicle priority requests.     

G4高速公路湖南耒宜段大修工程路面结构方案设计

介绍了耒宜高速公路原路面的多种路面结构与交通流量及路面损害情况,针对具体的路面结构与左右幅交通流量与轴载的悬殊差异,经技术经济比较,采用了在原连续配筋混凝土路面上直接加铺沥青混凝土路面结构;在原普通水泥混凝土与钢筋混凝土路面上加铺连续配筋混凝土复合式路面;在原沥青路面上进行铣刨加铺单层沥青面层与双层沥青面层、对原沥青路面进行就地热再生后加铺单层与双层沥青面层结构。     

宝马培训的特点及对汽车类专业课程体系改革的借鉴

广东交通职业技术学院与宝马公司合作建立了宝马培训基地,宝马培训体系有严格的层次,基地培训内容分为学徒工、宝马技术综合导入、机电工三大模块,主要面向员工工作岗位,以能力要求为本,培训时间和培训内容都有具体的安排,培训具有严格的程序,最后以综合考核为基础发放相应的证书。宝马培训基地的特色对高职汽车运用课程体系改革提供了借鉴意义。     

船舶结构气幕减振的模型试验研究

对船舶结构气幕减振的模型试验研究作了介绍和讨论。试验模型为铝质,平底,尖首,方尾,开口薄壁型船模,试验在循环水槽中进行,通过2种吃水,2种喷气孔径,5种喷气流量,2种水流速度的选择组合,研究了气幕对船模自由振动,强迫振动和振动阻尼的影响,试验结果表明,气幕对船舶结构的强迫振动响应有较大的抑制作用,有明显的降噪效果,气幕减振有重要的应用前景。