教师在数字化测图教学实践中的主导作用

介绍在数字化测图实践中,各关键技术环节上教师的主导作用,总结了实践教学的经验和体会。     

我国城市测量技术发展现状与成就

介绍我国城市测量技术发展的现状,着重介绍测绘新技术在城市测量中的应用与实际效果,阐述测量技术基础建设的成就。     

高放废物处置库预选场地地学信息库的建立

本文以高放废物处置库预选场地甘肃北山玉门镇地学信息库的建立为例,详细阐述了地理信息系统在高放废物地质处置中的应用,并在此基础上分析了其应用前景,为不同层次的管理、科研人员提供了全新思路;介绍了将地理信息系统技术引入图件和资料管理的优点。     

基于栅格数字高程模型自动提取黄土地貌沟沿线技术研究

从数字高程模型中提取具有精确定位特征的连续的沟沿线是构建黄土沟壑丘陵地区土壤侵蚀,泥沙搬运和径流过程的空间分布式机理－过程模型的关键技术。本文提出了基于地貌形态学特征的地貌提取技术,在提取具有代表性的黄土丘陵沟壑区山西离石王家沟流域汇流网络的基础上,自动提取了该流域完整的沟沿线,得到了满意的结果。     

ARS软件滤波器在CDSN台站中的扩展应用

在ＣＤＳＮ台站用数字滤波方法对数字地震仪进行抑制噪声滤波,方法简单易行。通过震例检验,把本人新创造的滤波器用ＡＲＳ软件中含有的滤波器相结合,对地震信号的识别有一定的参考意义,有助于提高编辑地震报告的Ｐ波利用率。     

中国数字地震台网数字化地震资料使用指南

由于数字地震记录仪具有记录频带宽,分辨率高,动态范围大以及易于用计算机处理等优点,所以数字地震台网产出的数字地震资料成为地震活动性,震源机制,地球内部研究,地震监测及预报等的最基本数据源。     

Strain fields and mechanical response of a highly to medium fissured bentonite clay

This article presents the developments of an ongoing research aimed at modelling the influence of fissuring on the behaviour of clays. In particular, it recalls the main results of an extensive laboratory investigation on a fissured bentonite clay from the south of Italy and presents the data of a new investigation on the evolution with shearing of the strain fields developing within the clay, resulting from Digital Image Correlation (DIC). Element test results are analysed in the framework of continuum mechanics and linked to the clay fissuring features, once characterised using the Fissuring IDentity (F‐ID) chart. This article compares the bentonite behaviour with that of other fissured clays of different F‐IDs, highlighting the common behavioural features. Thereafter, the soil response at the macro level is related to the DIC‐derived strain fields evolving within the clay with loading. For this purpose, DIC was successfully used to investigate the deformation processes active in the fissured clay and the sources of the localisation phenomena. DIC is shown to provide indications of the extent to which highly to medium fissured clays element test results can be of use to model the clay behaviour according to continuum mechanics. Copyright © 2012 John Wiley & Sons, Ltd.     

双天线干涉实验中的数据处理

主要根据我们实现的相关函数的获取方式，讨论对数据后处理的理解。     

Digital quantification of the miospore coloration to assess the thermal maturity: Novel RGB-based measuring technique

The post depositional thermal maturity and its related chemical changes induce the sporomorphs color alteration, which is a common useful tool in the optical microscopy of the organic matters (OM) and their pre-geochemical studies. The present contribution uses the modern available opportunity of digital technology to achieve a quantifying system technique, which includes color measurements and their possible graphic presentation. The normal digital images of sporomorphs from several ages and geological settings are used to obtain color measurements in the form of digital Red, Green and Blue triple color system (RGB). These measurements were accomplished using some software programs such as Photoshop™^© or ImageJ with employing average microscope setup. The triple RGB color readings are plotted on a ternary diagram, which is divided into three fields. These fields express the maturity levels. The presented new RGB-based quantifying technique is economic and provides a simple examination for maturity, which is linked to the hydrocarbon generation. This can partially replace or walk side by side with the vitrinite reflectance microscopy.     

三维数字城市管理平台的系统设计与实现

随着“数字城市”建设的推进,地理信息系统建设进入全面发展阶段,加快基础空间数据更新频率的需求日趋强烈。如何有效的使用基础空间数据,为城市建设增砖加瓦成为政府部门关注的问题。该文主要阐述某个城市的系统方案设计、体系架构、网络架构与实现功能,为其他三维数字城市管理平台的建设提供一定的参考依据。