首页 | 本学科首页   官方微博 | 高级检索  
文章检索
  按 检索   检索词:      
出版年份:   被引次数:   他引次数: 提示:输入*表示无穷大
  收费全文   5篇
  免费   0篇
  国内免费   1篇
地质学   1篇
综合类   1篇
自然地理   4篇
  2013年   1篇
  2012年   1篇
  2004年   1篇
  1999年   1篇
  1997年   1篇
  1996年   1篇
排序方式: 共有6条查询结果,搜索用时 15 毫秒
1
1.
ABSTRACT. The use of e-mail by a grassroots activist group that straddles the Estonian-Russian border transcends political boundaries and provides ready connections to people in distant places. Activists create a perceived space of resistance in a supportive network that is stretched across space. This network of concern, defined by the physical space in which these activists work and by the strong communicative connections among them, was created to overcome continued environmental mismanagement and remove cultural barriers to cooperation. E-mail communication has enabled an ongoing influence on environmental policy in Estonia and Russia. This circumstance of a collaborative e-mail network created by grassroots activists to aid political work is a testament to how communication technology has expanded for the purpose of strengthening previously silenced voices in a regional and political context.  相似文献   
2.
The expansion of the Internet and e-mail access around the globe, especially into less-developed areas, raises the question of how geographers might use this technology for research purposes and the development of appropriate methodologies. This paper identifies three ways in which the use of e-mail surveys for geographic research differs from traditional mail surveys. First, there are substantial differences in selecting an appropriate sample population. Second, electronic medium considerations such as alphabet character translation, survey format, and receiving end conditions pose unique data collection challenges. Third, ascertaining that e-mail addresses to be included in a survey are operative is discussed as a useful means of maximizing the potential of an e-mail survey. Examples from an e-mail survey of environmentalists in Russia illustrate these points.  相似文献   
3.

The expansion of the Internet and e-mail access around the globe, especially into less-developed areas, raises the question of how geographers might use this technology for research purposes and the development of appropriate methodologies. This paper identifies three ways in which the use of e-mail surveys for geographic research differs from traditional mail surveys. First, there are substantial differences in selecting an appropriate sample population. Second, electronic medium considerations such as alphabet character translation, survey format, and receiving end conditions pose unique data collection challenges. Third, ascertaining that e-mail addresses to be included in a survey are operative is discussed as a useful means of maximizing the potential of an e-mail survey. Examples from an e-mail survey of environmentalists in Russia illustrate these points.  相似文献   
4.
地质勘查综合统计信息网络管理系统的建立与应用   总被引:2,自引:1,他引:1  
刘凤民  李银海 《地质与勘探》1999,35(5):44-46,58
主要介绍了冶金地质勘查综合统计表(TJYB)系统的总体布局、功能特点及开发运行环境;着重论述了从数据采集、数据传输、数据处理到数据查询的全过程;并指出了系统的发展远景。  相似文献   
5.
利用以Web Service形式提供的PKI证书在线查询系统,通过自动、动态的查询证书库,在收发电子邮件的程序中集成了以PKI为基础的安全特性.此系统依靠CA中心提供的查询服务,实现了对电子邮件进行透明的加解密及签名和验证过程.  相似文献   
6.
《The Journal of geography》2012,111(3):149-151
Abstract

Atop the Urban Hierarchy by Robert A. Beauregard, ed. Totowa, NJ: Rowman &; Littlefield Publishers, Inc. 1989. xx and 304 pp., graphs, tables, maps, refs., and index. $36.50, cloth.

The Pageant of World History by Gerald Leinwand Needham Heights, MA: Prentice-Hall, Inc. 1990. Text Book. 827 pp. ISBN 013–647975–8.

The Fate of the Forest: Developers, Destroyers and Defenders of the Amazon by Susanna Hecht and Alexander Cockburn New York, NY: Verso. 1989. Maps, glossary, biblio., index. 266 pp. ISBN 0–86091–2. $24.95, cloth.

A Place of Sense: Essays in Search of the Midwest by Michael Martone, ed. Iowa City, Iowa: University of Iowa Press. 1988. Illustrations. 170 pp. ISBN 0–87745–217–2.

On Assignment National Geographic Society. 1990. Boardgame. $33.20.  相似文献   
1
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号