基于ArcGIS的管线测绘资料管理系统的设计与实现

城市测绘生产单位积累了大量的测绘资料,为了更好地查询及再利用这些测绘资料,可利用GIS和数据库技术建立测绘资料管理系统。本文针对本部门的管线测绘资料的现状,设计了管线测绘资料系统的数据库结构,基于ArcGIS平台开发了一套管理系统,该系统不仅具有资料查询、资料管理功能,还能用于对既有测绘项目的作业统计及生产进度监控。     

基于EPS的城市勘测院信息化测绘体系建设研究

21世纪测绘部门逐步进入信息化测绘阶段,本文分析了测绘产品更新滞后、更新不及时的现状,提出了基于EPS生产办公信息化系统实现基础地理数据生产、动态更新入库流程化,强化生产流程信息化,扩展报表统计功能,并增加测绘生产办公流程管理、测绘生产进度信息采集、测绘生产质检流程管理信息统计的功能。探索城市勘测类测绘单位从生产型测绘向综合服务型测绘转型升级,开展信息化测绘体系建设,在数据获取、数据处理、数据服务及社会应用等方面进行研究,解决测绘地理信息数据生产与需求的矛盾,突破测绘地理信息资源整合与共享利用的瓶颈,从整体上提高测绘地理信息综合服务能力。     

基于天地图的测绘资质查询系统设计与实现

以陕西省测绘资质查询系统为例,以"天地图"地图服务作为基础底图数据支撑,使用WebGIS技术、数据库技术和相关前端开发框架设计开发,完成了测绘资质信息查询系统各种功能,系统不但为公众提供了可视化的资质查询统计服务,同时提高了测绘资质管理部门对资质信息管理维护的工作效率,为信息化测绘奠定了一定基础。     

基于网络环境下的测绘资料档案管理查询系统设计与实现

本文针对目前测绘资料档案管理空间区域查询及网络查询不足等问题,提出面向测绘资料管理、使用、开发的应用系统,实现测绘资料档案管理的系统化、规范化和自动化,对测绘资料档案进行集中统一的管理（服务器端）,分布式查询（客户端）。目的是提高测绘资料档案管理的效率及测绘生产的效率。     

南极测绘地理信息数据库与管理系统设计与实现

基于最新基地测绘地理信息数据集,本文从基地测绘成果管理、分发服务、档案管理和应用服务等角度出发,系统地开展和完善极地测绘地理信息分类方法研究、基地测绘地理信息数据库及管理系统架构的设计与研建,以实现对各种数据和信息的快速查询、检索、统计,及时修改更新、空间分析与资源共享等,避免数据资料流失,实现数据的可持续利用,为科研人员和决策人员提供全面的研究和决策基础。     

基于ProjectWise的测绘工程项目文档管理系统

运用 Visual Studio 2005、ProjectWise、SDK、MDL 等多种开发工具在 ProjectWise 平台上二次开发出一套完整的测绘工程项目文档管理系统,在测绘单位文档管理目录结构的建立、成果的智能查询和参考、与任务登记系统及档案管理系统接口的实现3个方面,实现了文档的建立、检查、审核、归档等流转过程的控制以及查询、统计、调阅、修改、批注等其他功能,大大提高了测绘工程项目文档管理的效率和安全性。     

湖北省测绘成果查询系统的设计与实现

在ArcGIS Server服务平台下,利用数据库技术、WebGIS技术等开发建设了湖北省测绘成果查询系统,解决了目前测绘成果管理部门的数字档案信息查询和共享方面存在的问题。     

测绘信息计算机网络系统的设计思路与构建框架

测绘信息计算机网络系统是测绘数字信息工程的主要实体之一，是数字测绘生产、应用及管理的重要基础支撑平台。本文结合测绘生产及应用的特点和需求，从系统建设目标、功能要求、系统总体设计等方面介绍了测绘信息计算机网络系统的设计思路，并就其实现方法和所采用的相应技术作了简单的叙述。     

基于WebGIS测绘仪器管理系统研究与设计

测绘仪器管理系统是由仪器管理平台和仪器管理微信小程序两部分组成[1],根据数据特点,选择对象-关系型数据库PostgreSQL[2]存储和管理数据,并将其部署在阿里云上[3]。仪器管理平台基于B/S(浏览器/服务器)架构,并结合Vue框架[4]、LBS(基于位置服务)技术[5]、Openlayers地图框架[6]和Echarts[7]等技术,实现数据的管理与操作、文件的管理与操作、数据的分析与图形化表达、地图的显示与交互等功能,不同层级的管理人员可以在统一的平台上进行数据管理、交互查询、结果分析、统计和预警。仪器管理微信小程序基于微信小程序开发平台[8]和腾讯地图开发[9],该小程序集二维码识别和上传、地图显示与交互于一体,可实现数据上传、信息通知等功能。研究表明:采用该系统进行测绘仪器管理,可以有效提升测绘仪器使用效率,优化生产配置,便于生产精准调配、科学制定采购计划,提高工作效率。     

基于Web2.0的测绘地理信息质量监督检查系统实现

基于Web2.0模式及其相关技术,设计了一种测绘地理信息质量监督检查管理与服务系统框架。该系统提供了一套完整的信息化测绘地理信息质量监督检查流程及配套的信息浏览、查询等服务,实现了测绘地理信息质量监督检查的信息共享和用户互操作,保证了检查的合法性、规范性与公正性。     

UGANDA,LAND AND SURVEY DEPARTMENT,ANNUAL REPORT, 1938

Abstract

Among colonial dependencies Uganda is but a small territory; but it is comparatively prosperous and is compact. In such circumstances the integration under one departmental organization of survey and registration and of the administration of the State's responsibilities for lands and mines proves to be a convenient and economical arrangement, which works, in the balance, to the advantage of the survey branch. The Annual Report for 1938 deals with all the activities of a diversely occupied department, which controlled revenue collections of over £56,000, and mineral exports valued at £225,000.     

GIS, expert systems, and interoperability

Integrating a GIS has been a common way to combine the functionality of two or more systems for some time. A three-dimensional model of integration is described which shows the range of linkages that can be achieved. Extremely flexible and dynamic linkages between systems can now be created through the recent advances of client/server and object-oriented technology. An expert system shell is coupled with a GIS to create a generic spatial rule-based toolbox called SES (spatial expert shell). An expert system developer using this toolbox can transparently access spatial data and relationships from a GIS by linking application objects to spatial classes. These spatial classes include methods that format and send requests to the GIS server. Thus the linkage is determined at run-time allowing a flexible interwoven interaction between the expert system and the GIS.     

Qibla,and Related,Map Projections

The qibla problem—determination of the direction to Mecca—has given rise to retro-azimuthal map projections, an interesting, albeit unusual and little known, class of map projections. Principal contributors to this subject were Craig and Hammer, both writing in 1910. A property of retro-azimuthal projections is that the parallels are bent downwards towards the equator. The resulting maps, when extended to the entire world, thus must overlap themselves. An unusual recent discovery from Iran suggests that Muslims might have been prior inventors of a similar projection, by at least several centuries. A later corollary by Schoy leads to a new "cylindrical" azimuthal map projection with parallels bending away from the equator, here illustrated for the first time.     

Categorical maps, comparisons, and confidence

The comparison of categorical maps is a common problem in several different contexts. Differences between categorical maps can be characterized and measured in a variety of ways. In 2004 we invited individuals from remote sensing, geographical information analysis, spatial modelling, and landscape ecology to participate in a virtual workshop in order to compare strategies for comparison. This revealed that the key dimensions of comparison relate to (1) the map characteristics considered, (2) the nature of the comparison, (3) the handling of geographical space, (4) the units of computed measures, and (5) the tests of significance.Ferko Csillag deceased     

“4D”技术及其应用

介绍“４Ｄ”（即数字地面模型、数字正射影像、数字栅格地图和数字线划地图）系列产品的生产流程、关键技术、及其在耕地保护、防灾减灾救灾和城市规划等方面的应用方法。     

Entropy,complexity, and spatial information

We pose the central problem of defining a measure of complexity, specifically for spatial systems in general, city systems in particular. The measures we adopt are based on Shannon’s (in Bell Syst Tech J 27:379–423, 623–656, 1948) definition of information. We introduce this measure and argue that increasing information is equivalent to increasing complexity, and we show that for spatial distributions, this involves a trade-off between the density of the distribution and the number of events that characterize it; as cities get bigger and are characterized by more events—more places or locations, information increases, all other things being equal. But sometimes the distribution changes at a faster rate than the number of events and thus information can decrease even if a city grows. We develop these ideas using various information measures. We first demonstrate their applicability to various distributions of population in London over the last 100 years, then to a wider region of London which is divided into bands of zones at increasing distances from the core, and finally to the evolution of the street system that characterizes the built-up area of London from 1786 to the present day. We conclude by arguing that we need to relate these measures to other measures of complexity, to choose a wider array of examples, and to extend the analysis to two-dimensional spatial systems.