共同的责任共同的行动

国土资源部“保增长、保红线”行动电视电话会议召开后，福建省委省政府高度重视，积极研究措施，投入“双保”行动。省长黄小晶强调：“双保行动”是学习贯彻科学发展观的要求，要保持经济持续较快增长，又要保红线，这是客观要求，必须做到，只要用心，完全可以做到。在当前扩大内需保障发展的特殊形势面前，国土资源部积极主动、科学应对，保增长保红线双帜并举，具有十分重要意义。     

基于MapX的电子地图的制作

随着地理信息系统(GIS)的发展与完善,它的设计开发工具也日臻成熟,MapInfo公司顺应这一发展潮流,开发了一种地图控件——MapX,能实现MapInfo的绝大部分功能。主要论述了MapX的特征,以及用相关的计算机语言和多媒体技术提供一种高效的、脱离一般平台的电子地图的制作方法,并介绍了所制作的电子地图的内容及特点。     

薪火相传的伟业:塞维利亚的伊西多尔

<正>公元5世纪,随着西罗马帝国的灭亡,西欧进入了"黑暗时期",在战火不绝的动荡岁月中,残存下来的古代文化知识     

GIS的应用与发展的探讨

从网络GIS应用、移动GIS应用、虚拟GIS应用、GIS与RS集成的应用、GIS与GPS集成的应用等5个方面论述了当前GIS的应用,并对当前GIS软件的发展方向提出了一些看法     

基于LabVIEW的GPS激光测距动态定位系统的数据采集平台的开发

介绍了GPS激光测距动态定位系统的功能及组成数据采集平台的各个软件模块，采用LabVIEW集成开发环境下设计的GPS激光测距动态定位系统的数据采集平台，实现了对GPS定位信息、激光测距信息和数字罗盘角度信息的采集、存储及实时显示。     

基于NewMap的教育地理信息系统的开发

以教育地理信息系统的设计和开发为例,全面阐述了系统设计的原则、总体结构,以及数据组织和功能实现过程。该系统基于NewMap开发,调用地理信息公共服务平台数据为教育资源的公众服务提供了新的途径,又很好地起到了数字城市建设中的示范应用作用。     

基于云计算的移动地理信息系统的研发

针对目前移动地理信息系统出现的传输效率不高、大型数据处理受限的问题,引入Hadoop云计算平台,构建基于Hadoop云计算平台的移动信息系统,研究提出了系统的工作流程,分析了其与目前移动地理信息系统的区别。通过实验对比证明,基于Hadoop的移动地理信息系统在服务处理上比现有系统有更快的反应时间,能在一定程度上解决存在的传输效率不高、大型数据处理受限的问题,能较好地满足用户对于地理信息服务的实时性的要求。     

基于Ajax的网络地理信息系统的应用研究

从网络地理信息系统和Ajax的相关技术入手,分析了基于Ajax引擎的Web应用模型和基于Ajax的WebGIS系统架构。Ajax技术与WebGIS结合,能够实现浏览器与地图服务器之间的异步交互,与传统的WebGIS应用相比,减少了冗余,减轻了请求和响应对服务器造成的负荷。文中以SuperMap IS.NET为开发平台,提出了基于Ajax的WebGIS应用开发方法及应用实例。Ajax的引入,使整个WebGIS的性能达到最佳状态,极大地提升了用户的应用体验。     

综合设计的计算机框架软件的探讨

计算机在建筑工程各个领域的广泛应用已经引发了建筑工业的巨大变革。在此基础上，如何在更高的层次上，将计算机综合地、系统地用于建筑工程，已成为一个亟待解决的重大课题。所谓系统，是指将计算机在各个方面的应用有机地联系起来；所谓综合．是指有一个一体化的计算机环境，以便协调、交互和整合。一个建筑工程可以从三方面来勾画：一、工程人员，即建筑工人、     

基于GIS的城市规划数据的特征分析及集成方法的研究

本文就基于GIS技术的城市规划管理数据的特征进行了分析，并对这些数据的集成方法进行了探讨。     

阿克苏河-塔里木河水系水质污染遥感监测与评价

 采用Landsat TM数据分析了阿克苏河—塔里木河断面水质污染状况,通过波段的DN值和常规监测数据建立能反映水质状况的 污染物监测模型。结果发现,将2000年常规监测数据代入模型后,与遥感数据的结果基本吻合| 重建阿克苏河—塔里木河的连续水体 污染变化曲线,得出污染物浓度随着远离上游而增加。     

Monitoring drought dynamics in the Aravalli region (India) using different indices based on ground and remote sensing data

The hard-rock hilly Aravalli terrain of Rajasthan province of India suffers with frequent drought due to poor and delayed monsoon, abnormally high summer-temperature and insufficient water resources. In the present study, detailed analysis of meteorological and hydrological data of the Aravalli region has been carried out for the years 1984–2003. Standardised Precipitation Index (SPI) has been used to quantify the precipitation deficit. Standardised Water-Level Index (SWI) has been developed to assess ground-water recharge-deficit. Vegetative drought indices like Vegetation Condition Index (VCI) and Temperature Condition Index (TCI) and Vegetation Health Index (VHI) have been computed using NDVI values obtained from Global Vegetation Index (GVI) and thermal channel data of NOAA AVHRR satellite. Detailed analyses of spatial and temporal drought dynamics during monsoon and non-monsoon seasons have been carried out through drought index maps generated in Geographic Information Systems (GIS) environment. Analysis and interpretation of these maps reveal that negative SPI anomalies not always correspond to drought. In the Aravalli region, aquifer-stress shifts its position time to time, and in certain pockets it is more frequent. In comparison to hydrological stress, vegetative stress in the Aravalli region is found to be slower to begin but quicker to withdraw.     

使用FME与VBA提取机场方格网高程数据

因受机场工程设计软件的测量数据容量限制,基于LiDAR采集、点云分类后得到的地面点云数据LAS不能完整应用于目前设计软件进行设计计算。本文通过对拟选技术方案的筛选,提出了利用FME Workbench数据处理功能,结合VBA编程获取外部方格网平面数据的方法。该方法在FME Workbench中实现了地面点云数据构建TIN、采用逐点内插方法从TIN中提取方格网高程数据、等高线生成及相应图形处理与成果输出。最终通过实际算例证明了该方法的有效性。     

Landslide risk analysis between Giri and Tons Rivers in Himachal Himalaya (India)

The area around Sataun in the Sirmur district of Himachal Pradesh, India (falling between the rivers Giri and Tons; both tributaries of the Yamuna River) was studied for landslide vulnerability on behalf of the inhabitants. The study was made using extensive remote sensing data (satellite and airborne). It is well supported by field evidence, demographic and infrastructural details and aided by Geographic Information System (GIS) based techniques. Field observations testify that slope, aspect, geology, tectonic planes, drainage, and land use all influence landslides in the region. These parameters were taken into consideration using the statistical approach of landslide hazard zonation. Using the census data of 1991, vulnerability of the populace to the landslide hazard was accessed. As most of the infrastructure in the region is concentrated around population centres, population data alone was used for vulnerability studies.     

Gravity Changes Before Large Earthquakes in China: 1998-2005

Although it is well known that coseismic gravity changes take place during an earthquake, previous research has not yielded convincing evidence demonstrating that significant gravity changes occur before large earthquakes. Furthermore, even if we suspect that gravity changes occur before large earthquakes, we have yet to demonstrate how to consistently observe these changes for useful earthquake forecast that would bring benefits to society. We analyzed ground gravity survey data obtained in 1998, 2000, 200...     

GNSS系统及其技术的发展研究

阐述了国际上卫星导航系统的总体发展,对美、俄、欧、中的四大全球系统,以及相关的区域系统和增强系统进行了简单的介绍,研究分析了GNSS系统及其技术的发展趋势,同时分析了我国Compass全球系统面临的机遇和挑战,并提出了我国未来工作的建议.     

“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。     

Virtual Australia: its key elements – know,think, communicate

Abstract

Virtual Australia is not a well-defined or agreed concept. This discussion paper conceptualises Virtual Australia as a ‘virtual [digital] model containing and representing all non-trivial objects and their contextual environment – from blue sky to bedrock – in real world Australia’. It describes a scenario for Virtual Australia, one or two decades from now, in which the locations and conditions of non-trivial objects and their environment are updated automatically through a combination of remote sensing and wireless communication technologies in support of a ‘Supranet’. It then examines the concept of the ‘Supranet’ – a pervasive information network based largely on wireless technology linking the physical world to a virtual model in real time – and develops and discusses three principal characteristics of the Supranet: the ability to have or collect specific information (know); the ability to process information (think); and the ability to communicate that information. If, in the near future, any or all non-trivial devices are to some extent able to know, think and communicate, the potential for object autonomy will be realised.     

自动车辆定位导航系统中传感器的误差分析

对国界定位导航系统中几种常见的辅助传感器所产生的误差进行了分析，导出了不同传感器的误差模型。这些误差模型是估计车辆位置的扩展卡尔曼滤波器的基础，同时也为选择适当的传感器提供了理论根据。