基于GIS地层剖面数据库和岩性柱状图符号库的创建

本文基于ArcGIS Deskto P9.2,建立了塔城盆地地层剖面的空间数据库,并利用ArcGIS系统本身的图形编辑功能,制作一套岩性符号库,用于实现岩性柱状图的填充,并将符号库中的每个岩性符号进行编码,通过岩性符号柱状图属性码与相应的岩性符号编码的匹配自动实现所有岩性柱状图的符号化表达。     

基于MAPGIS的土地利用数据库的更新方法讨论

本文主要对基于MAPGIS平台的土地利用数据库的更新方法进行分析讨论,并针对一些具体的数据变更叙述了其更新的方法;在本文最后还提出一些更新数据过程中需要注意的问题。     

构建基于GIS的房产管理

阐述了基于GIS房产管理的关键是建立统一的数据分类与编码标准,核心是建立房屋的空间地理属性信息、自然属性信息、社会人文属性信息的链接,基础是建立房产地理信息数据库。并提出了建立房产地理信息数据库的方法、设计思路和方式。     

第二松花江干流区地下水信息管理数据库系统开发与研制

介绍了第二松花江干流区地下水信息管理数据库系统的开发环境及总体设计。在分析与地下水有关的数据信息的基础上,提出了较为合理的地下水信息管理数据库系统的结构。将该系统按其功能分为5个子系统基础子系统、数据信息管理子系统、区域信息管理子系统、动态绘图子系统、水资源评价子系统,并对5个子系统的功能进行了详细阐述。     

An attenuation relationship based on Turkish strong motion data and iso-acceleration map of Turkey

This paper presents an attenuation relationship of peak ground acceleration (PGA) derived from Turkish strong motion data for rock, soil and soft soil sites and an iso-acceleration map of Turkey based on this relationship. For the purpose, among all the three-component accessible records, 221 records from 122 earthquakes that occurred in Turkey between 1976 and November 2003 were selected. The database was compiled for earthquakes with moment magnitudes (M_w) and PGA values ranging between 4.1 and 7.5, and 20 and 806 gal, and distances to epicenter considered in the database were between 5 and 100 km. From the regression analysis of the data, an attenuation equation of PGA considering rock, soil and soft soil conditions was developed. The PGA values predicted from the equation suggested in this study and those both from a few domestic equations and some imported equations were compared. In addition, an iso-acceleration map of Turkey was constructed using the suggested attenuation equation and considering both known active faults and epicenter locations of the earthquakes that have occurred in Turkey.     

The method of design for seismic data database system based on tree structure

Introduction In recent years, with the development of earthquake observation technology, increasing ofobservation stations and improvement of observation instruments which are digitalized and con-nected by network, a great deal of data is recorded, to some extend, which brings difficulty for usto manage and store them. It leads to traditional methods, which use the file system to managemass data, could not satisfy our requirement, and it is necessary to find a new method in place oftradit…     

Karst database development in Minnesota: design and data assembly

The Karst Feature Database (KFD) of Minnesota is a relational GIS-based Database Management System (DBMS). Previous karst feature datasets used inconsistent attributes to describe karst features in different areas of Minnesota. Existing metadata were modified and standardized to represent a comprehensive metadata for all the karst features in Minnesota. Microsoft Access 2000 and ArcView 3.2 were used to develop this working database. Existing county and sub-county karst feature datasets have been assembled into the KFD, which is capable of visualizing and analyzing the entire data set. By November 17 2002, 11,682 karst features were stored in the KFD of Minnesota. Data tables are stored in a Microsoft Access 2000 DBMS and linked to corresponding ArcView applications. The current KFD of Minnesota has been moved from a Windows NT server to a Windows 2000 Citrix server accessible to researchers and planners through networked interfaces.     

事故经济损失评估方法及计算机程序设计

分析了事故的后果和经济损失,详细论述了由于生产活动的中止和人的死亡或劳动能力的丧失而导致的生产活动中劳动力资源损失的计算方法,并应用面向对象的数据库系统Cache′和Delphi开发工具编写了事故经济损失计算程序,以货币形式给出了每个损失点的损失大小并输出可能损失的报告书,为事故管理、安全决策和风险评估提供了科学的依据.     

单舰航线水文气象保障特点和思考

文中总结单舰航线水文气象保障业务的特点、难点,并结合航线水文气象保障的现状提出一些个人的建设性建议。     

地理信息系统及图形数据库的形成

地理信息系统(GIS)是由计算机系统、地理数据和用户组成，为多学科提供服务的新兴学科。GIS的应用系统由硬件、软件、数据、人员和方法五个部分构成，其软件系统应具备数据输入、数据编辑、数据存贮与管理、空间查询与空间分析、可视化表达与输出等五项基本功能。图形数据库的形成主要是通过光栅扫描矢量化方法，对地质矿产和地物化遥资料及其它地质资料进行数字化，按照图层划分方案建立关系属性表，属性库建立的目的主要是从矿产预测角度出发，对有预测意义的属性信息进行有效管理。