现代水面舰艇隐身技术浅析

介绍了目前应用于水面舰艇的主要隐身技术,重点探讨了国外几种比较典型的水面隐身舰艇,分析了新型隐身技术的原理及特点。通过对我国现有隐身舰艇的分析,提出我国在隐身技术方面的发展趋势,并且对未来水面舰艇采用的隐身技术进行了展望。     

甬台温高速公路分水关超长上坡路段车辙处治技术研究

通过调查分析得出甬台温高速公路分水关长上坡路段车辙病害原因,采用多种处治措施对车辙进行处理和处治效果评价,同时结合该结构层的施工要点及成本分析,得出了长上坡路段车辙处理的方法。     

谈谈视情维修检验

众所周知,一艘现代化船舶是由船体结构和众多机电设备(以下简称设备)组成的,而且随着高新技术设备不断应用在船舶上,设备越来越显得复杂化,因此,如何始终保持所有设备都具有良好的技术状态,对保证船舶安全营运、防止污染及避免PSC滞留具有重要的意义,而保持和恢复设备正常工作性能的主要手段就是设备的维护保养和维修.     

遵义铁通传输系统网络升级方案

目前，随着遵义铁通电信业务的发展，铁通遵义分公司需要及时对传输网络进行优化、调整，以便进一步提高网络拓扑结构的合理性和传输网络的安全性、可靠性，有效利用传输资源，提高设备端口的利用率，及时满足用户对高品质通信网络的需求。     

一种多功能抑尘车智能化控制系统的设计

传统抑尘车由于各部件控制系统相对独立,无法实现集成式监控与操作,从而给使用者带来一定的不便。如何将诸多系统一一融合汇总控制成为解决此问题的关键,本文以公司开发的集成式控制的抑尘车为例介绍了一种创新型智能化控制多功能抑尘车控制系统的设计。     

大开口型船舶波浪诱导载荷研究

通过对某５万ｔ级大开口型船舶的各种波浪诱导载荷长期预报，详细讨论了不同波浪散布图、装载工况、航速、水动力计算理论和短峰波对波浪诱导载荷长期预报极值的影响，指出了一些值得注意的问题，以期对类似船型的液体波浪诱导载荷预报提供有用的参考。     

An investigation of incident frequency,duration and lanes blockage for determining traffic delay

Traffic delay caused by incidents is closely related to three variables: incident frequency, incident duration, and the number of lanes blocked by an incident that is directly related to the bottleneck capacity. Relatively, incident duration has been more extensively studied than incident frequency and the number of lanes blocked in an incident. In this study, we provide an investigation of the influencing factors for all of these three variables based on an incident data set that was collected in New York City (NYC). The information about the incidents derived from the identification can be used by incident management agencies in NYC for strategic policy decision making and daily incident management and traffic operation. In identifying the influencing factors for incident frequency, a set of models, including Poisson and Negative Binomial regression models and their zero‐inflated models, were considered. An appropriate model was determined based on a model decision‐making tree. The influencing factors for incident duration were identified based on hazard‐based models where Exponential, Weibull, Log‐logistic, and Log‐normal distributions were considered for incident duration. For the number of lanes blocked in an incident, the identification of the influencing factors was based on an Ordered Probit model which can better capture the order inherent in the number of lanes blocked in an incident. As identified in this study, rain is the only factor that significantly influenced incident frequency. For incident duration and the number of lanes blocked in an incident, various factors had significant impact. As concluded in this study, there is a strong need to identify the influencing factors in terms of different types of incidents and the roadways where the incidents occured.     

船体结构填角焊缝的设计规范分析

说明船体结构角焊缝的受力分析及强度条件，阐明角焊缝剪切强度系数的涵义及其在填角焊缝设计中的应用。     

自升式平台齿轮齿条应变测量与有限元强度分析

自升式平台齿轮齿条承受重载,受力情况复杂。在抬升装置实验台上进行应力测量,在ANSYS下建立整体有限元模型进行强度分析。对比结果,验证有限元分析结果是有效的。为自升式平台升降系统的设计和研发提供了参考依据     

城市道路机动车道宽度取值研究

针对城市道路机动车道宽度合理取值问题,通过对主要国家车道宽度取值的比较分析,研究了城市道路机动车道宽度计算理论,同时结合城市道路规范中有关机动车道宽度的规定及计算理论模型的修正,对城市道路机动车道宽度取值进行了探讨。