钻孔桩施工中的处理措施

钻孔桩是最普遍的基础形式,本文通过对赤水市港务大楼工程基础施工中,介绍分析一些钻孔桩施工质量事故和质量缺陷的处理方法。     

VBA编程对海洋工程设计中数据处理的改善

在海洋工程设计中，结构设计人员要面对复杂而又枯燥的软件后处理数据，这些数据是以文本方式存储的，而且随着设计过程的进行，数据是在动态变化的，如何高效而快速地提取相关数据，缩短设计周期，VBA强大而又简单的编程能力为此提供了可能。     

岩溶地区公路工程病害防治技术

通过广泛调研分析,揭示了岩溶地区公路工程病害的成因机理,提出了岩溶地区公路工程病害防治的基本原则,以及岩溶水控制和岩溶地基处理的多种具体防治措施。     

Coastal Resources as an Engine of Economic Growth and Reduction of Poverty in West Africa: Policy Considerations

This article synthesizes lessons and outcomes from the second international Coastal Zone Asia-Pacific conference (CZAP) on “Improving the Quality of Life in Coastal Areas,” held in Brisbane in September 2004. The conference theme was chosen as a follow-up from the first CZAP that identified priority actions in response to the increasing recognition of social issues in coastal management, particularly those aiming to improve the state of the coastal areas in the Asia-Pacific region. The second CZAP explored the “quality of life” theme by placing emphasis on rectifying coastal poverty, sustaining livelihoods, and protecting cultural heritage. Mechanisms to address these issues were explored through international agreements, participatory research, capacity building, and education, as well as the continuing need for integrated planning, environmental management, and effective monitoring and evaluation. A post-conference survey showed that the second CZAP resulted in 122 initiatives (82 underway and another 40 planned) to progress the improvement of quality of life in coastal areas. These initiatives ranged from the establishment of a unit that is responsible for river basin and coastal zone management by the Thua Thien Hue provincial government in Vietnam, to a collaborative on-ground livelihoods project between NGOs, government, and financial institutions on coastal zone management facilitated by the Asian Development Bank. However, the authors argue that two key challenges for ICM in the Asia-Pacific region remain. These challenges relate to the effective monitoring and evaluation of ICM initiatives, as well as matching future ICM initiatives to emergent priority areas.     

危旧桥加固改造工程中纵向加宽缝处理方法探讨

文章介绍了危旧桥加固改造工程中结构分离、刚性连接及铰接连接等桥梁纵向加宽缝处理方法的优缺点及应用情况,提出了一种结构分离法处理桥梁纵向加宽缝的新措施。     

油管螺纹图像处理方法研究

油管螺纹图像主要用于对螺纹形貌的观察和测量。对螺纹图像采用了低通滤波、对比度变换、高通滤波等处理方法,有效地改善了图像的质量。用于尺寸测量的螺纹牙型图像根据其直方图的特征,首先采用灰度阈值分割法分离牙型轮廓,生成二值图像,然后利用跨度最小的Roberts算子提取二值图中螺纹轮廓线,得到的轮廓边缘细致、准确,可以用于尺寸测量。     

铁路中小车站采用无动力污水处理设施的探讨简

随着我国环境保护法和水污染防治法的发布实施,铁路沿线车站周围的群众对车站随便排放污水意见很大,不少地方的环保部门也开始对车站随便排放污水进行限制或处罚。面对现实,急需铁路部门对中小车站生活污水排放采取治理措施。本文针对铁路沿线中小车站污水排放现状和途径及可采取的无动力污水处理技术和设施进行探讨,并提出如何根据每个车站的位置和环境条件、生活污水排放量、污水排放标准确定设计方案,以此来选择符合实际的无动力污水处理设施的建议。     

Detection and Classification of Vehicles by Measurement of Road-Pavement Vibration and by Means of Supervised Machine Learning

Road vehicle detection and, to a lesser extent, classification have received considerable attention, in particular for the purpose of traffic monitoring by transportation authorities. A multitude of sensors and systems have been developed to assist people in traffic monitoring. Camera-based systems have enjoyed wide adoption over the last decade, partially substituting for more traditional techniques. Methods based on road-pavement vibration are not as common as camera-based systems. However, vibration sensors may be of interest when sensors must be out of sight and insensitive to environmental conditions, such as fog. We present and discuss our work on detection and classification of vehicles by measurement of road-pavement vibration and by means of supervised machine learning. We describe the entire processing chain from sensor data acquisition to vehicle classification and discuss our results for the task of vehicle detection and the task of vehicle classification separately. Using data for a single vibration sensor, our results show a performance ranging between 94% and near 100% for the detection task (1340 samples) and between 43% and 86% for the classification task (experiment specific, between 454 and 1243 samples).     

建设创新型长江航道

船舶在海上航行由于种种原因造成船舶搁浅,船长、驾驶员及全体船员应认真分析船舶搁浅状况,采取各种措施,在保证船员安全的前提下,使船舶、货物损失减少到最低限度。     

TJWX-2000型微机监测系统分析与研究

对目前铁路信号TJWX-2000型微机监测系统存在的问题进行了分析，提出了解决办法，并根据信号设备发展需求对微机监测功能进行了二次开发研究。