变宽曲线连续箱梁悬灌施工

结合天水路黄河大桥的施工,主要介绍用于变宽曲线连续箱梁施工的宽幅整体三角挂篮的设计参数、工艺原理以及在缓和曲线段的施工放样和曲线箱梁的悬灌施工技术。     

Second-order perturbation added mass fluctuation on vertical vibration of tension leg platforms

Total motion in waves can be considered as a superposition of the motion of the body in still water and the forces on the restrained body. In this study the effect of added mass fluctuation on vertical vibration of tension leg platforms (TLP) in the case of vibration in still water for both free and forced vibration subjected to axial load at the top of the leg is presented. This effect is more important when the amplitude of vibration is large. Also this is important in fatigue life study of tethers. The structural model used here is very simple. Perturbation method is used to formulate and solve the problem. First- and second-order perturbations are used to solve the free and forced vibrations, respectively.     

用注浆充填法治理郑少高速公路采空区

公路路基采空区或下伏空洞是一种不良的地质现象,严重危害公路路基的稳定和正常运营。文章总结了采用注浆充填法处理郑少高速公路下伏采空区的设计方法、施工技术,为类似工程的治理提供施工方法和技术参数。     

船用低速柴油机缸套冷却水及处理

本文介绍了使用闭式冷却的船用柴油机的冷却水及水处理。     

Agent技术在军事中的应用

Agent是一种全新的分布计算技术，它在军事上的应用价值巨大。从军事应用的角度出发，论述了Agent在情报搜集、作战仿真、战场可视化、网络中心战以及对Legacy系统的改进方面的潜在用途。最后对Agent在军事上的应用还需克服的问题进行了阐述。     

基于电子化指挥系统的无线通信的建模与仿真

首先论述了导弹旅电子化指挥系统中无线通信的重要性以及无线通信仿真的必要性，给出了几种典型的无线通信的模型，提出了一种信道仿真实现方法。     

一种TMR容错服务器永久故障恢复机制的研究与实现

恢复是实现容错系统容错目的和提高系统可用性的重要环节.基于自行研制的TMR容错服务器系统，提出了。种以检查点为基础的进程复制恢复技术，主要介绍恢复机制的整体结构和实现的关键技术一检测点保存与恢复技术(checkpointing／restart)。     

Ground truthing sediment profile imagery with traditional benthic survey data along an established disturbance gradient

Macrobenthic surveys are an expensive, slow and labour intensive means to establish the health of benthic communities. Sediment profile imagery (SPI) is a means of rapid reconnaissance for monitoring large areas of the benthos. SPI has often been used to monitor gross anthropogenic disturbance. The aim of this study is to determine if SPI can be used as a tool to reliably map change in communities along natural estuarine gradients. Macrobenthic sampling was carried out at five stations along an established estuarine gradient. This faunal data was analysed using standard multivariate techniques and to ground truth a concurrent SPI survey. Faunal analysis showed that habitat quality in Inner Galway Bay was generally good, with some localised disturbance from the River Corrib and the sewage out flow exterior to the city dock. Four distinct groups were identified with a degree of overlap occurring between stations 3 and 4. While existing SPI indices mapped habitat quality in the same manner as the faunal data for end member stations, the level of distinction between the habitats of an intermediate staging was found to be poor. This lack of distinction amongst the stage 2 and 3 stations was overcome by developing a tailored index, the Galway Bay index of habitat quality (GBHQ). This index was derived from the 5 observed variables in the SPI data that were determined to best match the faunal distribution by permutative mantel testing. The 5 observed variables from the SPI data were the depth of the apparent redox potential discontinuity (aRPD), the depth of penetration by the prism, and the presence/absence of infauna, surface faecal pellet layer and biogenic mounding. The GBHQ was able to distinguish between the 5 stations to a greater extent than previously described indices, showing clearly the separate groupings defined by the faunal data. The index was tested on a follow up SPI survey and shown to be applicable in mapping a broader range of habitats in Galway Bay. Indices generated for localised mapping of estuarine gradients should be derived from observed features and be ground truthed using faunal data. Some aspects of the GBHQ should be generally applicable to fine grained boreal estuarine sediments (aRPD/penetration), while others may be of limited utility in other locations depending on the digging characteristics of the particular SPI camera, and local factors influencing the persistence of biogenic features in the profile. This derivation technique provides a simple way to optimise SPI to particular studies and localities.     

抓实QC小组活动的几点做法

从组织机构、活动制度、成员专业素质、注册登记、活动开展、培训教育6个方面阐述了铁路运输部门在QC小组活动开展中存在的问题,同时,对存在的问题进行了深刻剖析,提出了具体建议。