推力轴承基座带预应力谐响应分析

船舶运行时．推力轴承基座除了受到衡定的静载作用外还受到随时间变化的不同频率的正弦载荷作用。当推力轴承基座刚度不够时,在载荷的作用下,容易引起推力轴承的可见晃动。利用ANSYS软件对某推力轴承基座的两种设计进行带预应力的谐响应分析,计算结果表明,在轴承的不同转速下,原基座响应振幅较大,而加强后的基座响应的振幅都在允许的范围。     

绅宝车系自诊断系统

介绍绅宝车系自诊断系统的使用方法及如何读取故障码和进行故障诊断。     

估算系统DR与GPS／GLONASS的组合应用

估算系统DR与GPS／GLONASS的组合应用是现代定位手段中的重要方法之一。该系统采用先进的KALMAN滤波器及计算机的网络技术形成一个高精度的数字化的导航系统,该系统能提供可靠的连续的高精度的三维定位。     

SiO2-Al2O3-MgO-F系玻璃陶瓷的等温析晶

应用光学显微镜(OM)和扫描电子显微镜(SEM)等技术,系统研究了SiO2-Al2O3-MgO-F系玻璃和玻璃陶瓷在等温条件下析晶组织转变和转变动力学.结果表明：针状云母晶体首先从玻璃体表面形核,然后以一维模式向玻璃体内部长大.根据John-Meehl-Avrami方程,得到玻璃转变的反应生长指数n为1,活化能A为276.97kJ/mol.     

对AFC系统内单程票应用的探讨

结合深圳地铁1年多运营的实际情况,对AFC系统内单程票流失的原因进行分析,针对流失原因提出改进措施,并对二期工程AFC系统单程票的方案进行探讨。     

Discussion on the design value of environmental condition in offshore structure design

Return period is generally adopted to calculate the design value of environmental condition in offshore structure design. However, it can not make relevant adjustment according to structure's, especially the mobile unit's, life time or its operation areas and usually make the design either insufficiently safe or rather uneconomical.A formula is developed to solve this problem in the case of the design wave height, where the risk, the design life, the distributions of wave heights in operation areas and the operating durations in each area are regarded as parameters. The applications of this method and the comparisons with the general method are presented. The result of this method is considered to be proper.     

Precise zero-knowledge arguments with poly-logarithmic efficiency

Precise zero-knowledge was introduced by Micali and Pass in STOC’06. This notion captures the idea that the view of a verifier can be reconstructed in almost same time. Following the notion, they constructed some precise zero-knowledge proofs and arguments, in which the communicated messages are polynomial bits. In this paper, we employ the new simulation technique introduced by them to provide a precise simulator for a modified Kilian’s zero-knowledge arguments with poly-logarithmic efficiency (this modification addressed by Rosen), and as a result we show this protocol is a precise zero-knowledge argument with poly-logarithmic efficiency. We also present an alternative construction of the desired protocols.     

新型钢箱梁桥面铺装方案影响因素分析

以大跨径钢箱梁桥为例,分析了在静力荷载条件下各种因素对桥面铺装的影响.轻集料混凝土铺装方案影响因素较多,重点就剪力钉间距、直径、高度、铺装层厚度和模量、车载以及跨径等影响因素进行了比较分析.结果表明,钢箱梁桥面的轻集料混凝土+剪力钉铺装方案总体上完全可以达到当前设计要求.     

基于OSEK的车用实时操作系统的设计与实现

根据OSEK/VDX规范,自主设计了一种车用嵌入式实时操作系统uOSEK.并从系统启动、任务调度和任务管理等方面,介绍了该系统的主要设计思想.最后通过在Freescale HC08平台上的实现,对uOSEK系统的实时性能和存储需求进行了评估.结果表明,该操作系统在8位机平台上具有较好的可行性,较强的实时性和较低的存储需求.     

THE PROSPECTIVE STUDY OF RELATIONSHIP BETWEEN LOW SELENIUM AND KASHIN-BECK DISEASE

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