多种数据源地理信息处理的Internet GIS 方法   总被引：9，自引：1，他引：8  

袁相儒  龚健雅  陈莉丽  韩海洋 《武汉大学学报(信息科学版)》1999,24(1):11-14

介绍了多种数据源获取、管理和地理信息处理的InternetGIS方法和用这种方法设计的InternetGIS的原理及功能特征。  相似文献   

JAVA——GIS软件开发的新工具     

谭秀娟  杨国东 《测绘与空间地理信息》1999,(2)

Internet的迅速发展和WWW的面世给传统的GIS软件开发提出了新的挑战,本文通过对Java特点的阐述,论述了Java成为GIS软件开发的新工具的可能性和必然性,笔者认为在不久的将来,Java必将取代Visual Basic和Visual C++成为GIS软件开发的新工具。  相似文献   

用Java/XML实现WebGIS的问题探讨   总被引：1，自引：0，他引：1  

向南平  彭海波 《海洋测绘》2004,24(1):35-37

Java与XML是两门目前最为流行的网络编程技术,Java语言功能强大,XML在数据转换与传输、内容的表达与搜索等方面有广泛的应用。所以,用Java和XML来实现WebGIS不失为一种理想的方案,并结合当前主要的WebGIS平台进行了论述。  相似文献   

实景哈尔滨的设计与实现     

张忠岩  李海涛 《东北测绘》2010,(2):62-64

“实景哈尔滨”是将3维实景地图与电子地图结合的平台,以360°全景形式的地图平台,以独特风格为广大网民提供实景地图搜索服务,给人以身临其境的感觉。  相似文献   

基于ArcIMS的空间数据发布系统的设计与实现     

陈腾 《测绘与空间地理信息》2010,33(3):26-28

采用ArcIMS作为WebGIS的开发平台进行空间数据的发布,首先针对已有数据资源的特点阐明了所开发系统的功能,按此功能设计出了整个数据发布系统的流程,最后利用湖南省1∶500 000土地利用数据来演示该系统,进行空间数据的发布。  相似文献   

Java多线程技术在WebGIS客户端小程序中的应用     

刘晓东  李青元 《地理信息世界》2006,4(5):26-28

本文在对WebGIS的概念、发展以及使用Java开发环境开发3层结构的WebGIS在浏览器方面的优势进行介绍之后,重点描述了Java语言中多线程技术的特点,讨论了Java多线程技术在We-bGIS客户端数据调度、数据传输、数据展示方面的体会。  相似文献   

‘Prosperity beyond belief’: The interaction between a potato crop boom,vulnerability and volcanic hazard in Central Java,Indonesia     

Christina Griffin 《Singapore journal of tropical geography》2020,41(1):23-39

This article examines the interaction between conditions of vulnerability and a potato crop boom in Central Java's highlands. While partaking in agricultural endeavours on volcanic slopes can bring substantial economic rewards, the local benefits associated with these livelihood activities are often overlooked by disaster scholarship. Drawing on a period of fieldwork conducted in the Dieng Plateau, a region characterized by a series of craters that periodically erupt mud and poisonous gas, this article demonstrates how a potato crop boom has evolved despite, and in part because of, the underlying volcanic hazard. By integrating the sustainable livelihood and agrarian change literatures, the article concludes that the potato boom has provided significant economic opportunity, and through this, a means to reduce vulnerability. Yet, despite these economic gains, the agrarian shift described herein has also introduced new vulnerabilities as farmers have become dependent on a resource intensive crop. These findings demonstrate how theories of agrarian transformation can complement livelihood perspectives in disaster research, and provide greater detail into the local and regional processes that encourage people to often-profitably farm hazardous land.  相似文献   

The role of slump scars in slope channel initiation: A case study from the Miocene Jatiluhur Formation in the Bogor Trough,West Java     

《Journal of Asian Earth Sciences》2013

This paper investigates slope channel initiation by seabed irregularities that were initially formed by slump scars in the lower to middle Jatiluhur Formation, part of the middle- to late Miocene successions in the Bogor Trough, West Java. This Miocene succession is up to 1000 m thick in the study area, and is interpreted as a prograding slope–shelf system that formed during a period of falling- and lowstand stages in relative sea level. The lower part of the formation is a siltstone-dominated siliciclastic succession, containing slump deposits, slump-scar-fill deposits, and minor channel-fill deposits, which formed in slope and shelf-margin environments. In contrast, the middle part, which gradationally overlies the lower part, is characterized by shallow-marine carbonates.The slump-scars-fill deposits have an overall lenticular geometry, and are 140–480 m wide and 0.4–1.6 m thick. Some have distinct erosional bases, which cut into the underlying siltstones, in association with medium- to coarse-grained sandstones with lateral-accretion surfaces and tractional structures common in channel-fill deposits. The incident link of slump-scar-fill deposits and channel-fill deposits in the prograding slope–shelf succession of the lower to middle Jatiluhur Formation suggests that some slump scars formed incipient seabed irregularities that may have played an important role in the development of slope channels. The present study provides one example of the various potential mechanisms that can result in channel formation in a slope setting.  相似文献   

一种连接池的设计实现及性能分析测试     

颜若愚  杨文彬  刘兴运 《广东海洋大学学报》2005,25(6):55-59

给出了一种合理的数据库连接池的设计思想及Java实现。并对该连接池的效率进行了测试分析和比较,表明该连接池能以较好的性能工作,并显著提高系统的使用效率。  相似文献   

JSP中的数据库访问技术研究与改进   总被引：3，自引：0，他引：3  

李敦东  李昌一  周凌云 《成都信息工程学院学报》2003,18(3):291-294

分析和研究了JSP中数据库访问的机制和实现方法，并在现有技术基础上，从几个方面提出改进数据访问效率的措施。  相似文献