Helping Communities Adapt and Plan for Coastal Hazards: Coastal Zone Management Program Recommendations for National Tool Developers

Adapting to changing coastlines is an unprecedented planning challenge as coastal hazards, including those associated with climate change, influence all areas of resource management. Tools have been developed to aid in understanding coastal hazards and to facilitate the planning and implementation of adaptation strategies. Through interviews with members of eight geographically distributed state Coastal Zone Management (CZM) Programs and several federal and nonprofit partners, we explored the utility of current tools for on-the-ground adaptation planning and implementation needs. State CZM Programs operate as trusted information brokers at the nexus between national resources and local needs. Here we provide seven recommendations for how to overcome the challenges identified with tool discovery, lack of trust, and the coarse spatial resolution of national tools. Our findings suggest local community needs are better addressed when end-users play a role in the tool development process. We also recommend leveraging CZM Program connections because they have the knowledge and expertise to identify solutions and disseminate information. While the recommendations presented here were taken from the perspective of state CZM Programs regarding coastal tools, the lessons learned may provide valuable insight into the tool development process for other resource management fields.     

联锁代传SA信息在长沙南枢纽的应用

长沙南高铁站由沪昆场和武广场组成。办理跨场进路时,需要两个场分别办理分段进路进而组成一条完整的跨场进路。由于控制长沙南高铁的两个场的无线闭塞中心(RBC)之间没有交互进路信息,因此RBC无法获取完整的进路信息。提出针对这种情况的解决方案:通过两个场的计算机联锁之间的站联信息代传SA信息来给RBC发送完整进路信息。     

摩托车曲柄轴孔中心距的测量

通过简单的自制测量辅具,运用标准钢球准确定孔、轴中心坐标的方法,解决了摩托车曲柄轴孔中心距的精密测量难题,并取得了较好的经济效益。     

双块式无碴轨道工具轨法施工装备之粗调机

RP1500—4型粗调机是针对武广客专研制开发的双块式无碴轨道施工装备。介绍了该粗调机的主要结构、系统构成、性能参数及其应用范围。该粗调机在武广客专试验段应用，取得了满意的效果。     

青岛北枢纽站列控技术方案研究

介绍青岛北列控中心设置的技术方案,包括基于工程特殊站场条件下系统的结构和实现的功能,通过分析研究工程设置特点,给出青岛北枢纽站临时限速设置方案、信号降级处理原则、系统配置方案、列控中心与其他设备接口设计方案,以满足胶济线青岛北枢纽工程提高运输效率的需求。     

不重磨插齿刀片的变形误差及修正方法

本文阐述了不重磨插齿刀的许多优点,用弹性力学的有关理论,计算了不重磨刀片的变形误差,并提出了切实可行的误差修正方法。本文对不重磨插齿刀的设计具有一定的实用价值。     

Using topology and neighbor information to overcome adverse vehicle density conditions

Vehicular networks supporting cooperative driving on the road have attracted much attention due to the plethora of new possibilities they offer to modern Intelligent Transportation Systems. However, research works regarding vehicular networks usually obviate assessing their proposals in scenarios including adverse vehicle densities, i.e., density values that significantly differ from the average values, despite such densities can be quite common in real urban environments (e.g. traffic jams). In this paper, we study the effect of these hostile conditions on the performance of different schemes providing warning message dissemination. The goal of these schemes is to maximize message delivery effectiveness, something difficult to achieve in adverse density scenarios. In addition, we propose the Neighbor Store and Forward (NSF) scheme, designed to be used under low density conditions, and the Nearest Junction Located (NJL) scheme, specially developed for high density conditions. Simulation results demonstrate that our proposals are able to outperform existing warning message dissemination schemes in urban environments under adverse vehicle density conditions. In particular, NSF reduces the warning notification time in low vehicle density scenarios, while increasing up to 23.3% the percentage of informed vehicles. As for high vehicle density conditions, NJL is able to inform the same percentage of vehicles than other existing approaches, while reducing the number of messages up to 46.73%.     

盾构法施工超高水压换刀技术研究

为适应水底隧道盾构法技术的大深度化施工需求,通过研究带压换刀装置、超高水压条件下常压进入刀盘轮幅的常压换刀装置、超高水压作业设备的配置、超高水压进舱换刀开挖面透气控制标准与降低开挖面透气性的措施、超高水压作业程序、超高水压换刀压缩气体压力确定及超高水压作业模式的确定等,以解决超高水压条件下刀具检查与更换的技术难题。得出饱和气体盾构进舱换刀的作业原理与饱和气体潜水作业基本相同,具有实施的可能性。     

ZGMn13钻削刀具断屑排屑实验研究

针对ZGMn13刀具钻削过程中断屑、排屑困难的问题,从刀片材料、刀片结构、刀片与刀杆连接方式三个方面进行了改进.通过实验验证,改进后的刀具在加工中不仅断屑、排屑效果理想,而且较旧刀具使用寿命提高了34.7％,能降低生产成本,得到了良好的优化效果.     

CTCS-3级列控系统车地交互流程形式化建模与验证

正在建设的时速300 km/h以上的高速铁路已采用CTCS-3级列车运行控制系统.车地信息交互流程是影响CTCS-3级列控系统的效率、可靠性和安全性的主要因素之一.基于时间自动机理论对车地交互流程进行建模与验证具有重要意义.首先将车地交互流程分为4个典型的子流程：任务启动流程、正常行车流程、RBC切换流程和任务结束流程,然后针对这些子流程建立无线闭塞中心（RBC）、车载设备（ATP）和铁路专用移动通信网（GSM-R）的时间自动机网络模型,最后利用时间自动机模型验证工具UPPAAL进行仿真分析,验证了CTCS-3级列控系统的车地交互流程的安全性和受限活性.