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   191篇
  免费   11篇
  国内免费   4篇
测绘学   13篇
大气科学   14篇
地球物理   103篇
地质学   43篇
海洋学   9篇
综合类   12篇
自然地理   12篇
  2022年   5篇
  2021年   4篇
  2020年   9篇
  2019年   10篇
  2018年   6篇
  2017年   12篇
  2016年   11篇
  2015年   6篇
  2014年   7篇
  2013年   14篇
  2012年   11篇
  2011年   23篇
  2010年   8篇
  2009年   12篇
  2008年   15篇
  2007年   12篇
  2006年   9篇
  2005年   8篇
  2004年   5篇
  2003年   6篇
  2002年   2篇
  2001年   4篇
  2000年   3篇
  1997年   1篇
  1995年   2篇
  1993年   1篇
排序方式: 共有206条查询结果,搜索用时 125 毫秒
71.
介绍了高海拔对人体的主要影响,强调在高海拔地区开展地震应急工作应注意的事项以及应急装备的要求,对进入藏区顺利开展地震应急工作面临的问题和困难提出了相应的对策。  相似文献   
72.
传统的WLAN(Wireless LAN无线局域网)因为其单跳的网络特性造成了通讯瓶颈,这也使得其不能很好地满足地震应急救援通讯对效率、准确、安全等特性的要求。一种新型的无线网络形式WMN(Wireless Mesh Network无线网状网)的出现为构建下一代地震应急救援无线通讯系统提供了良好的网络基础。通过对传统地震应急救援无线平台和WMN的介绍,分析了构建新型地震应急救援无线通讯平台的技术指标和可行性,并且给出了平台搭建建议,最后对可能存在的问题以及应用前景进行了讨论。  相似文献   
73.
In order to prevent the catastrophic events such as extreme drought, continuous drought and source-water quality pollution, 15 groundwater emergency water sources are to be selected in 11 important cities in Hebei, and the evaluation of allowable emergency exploitation quantity is 180.19×104 m3/d. Under the current conditions, the water supply quantity of emergency water sources and the total emergency water supply quantity will meet the emergency water demand with the guarantee rate of 65.79% to 377.78% and 90.35% to 270.51% respectively. By 2020, the water supply quantity of emergency water source places and the total emergency water supply quantity will meet the emergency water demand with the guarantee rate of 22.08% to 74.49% and 82.65% to 144.08% in the benefited areas of South-to-North water diversion (SNWDP); and for non-SNWDP areas, the guarantee rate will be 74.64% to 337.78% and 74.64% to 377.78%.  相似文献   
74.
新疆地震应急指挥技术系统介绍   总被引:1,自引:0,他引:1  
兰陵  宋立军  周文 《内陆地震》2009,23(2):226-232
简要介绍了新疆地震应急指挥技术系统建设过程、系统功能、建设中的技术难点、系统的软硬件环境和运行情况.  相似文献   
75.
A field reconnaissance mission was led to the areas affected by the disaster caused by the Magnitude 7.9 earthquake event of 15/08/2007 near the city of Pisco in Peru. The main objectives of the mission were to collect data and make observations leading to improvements in design methods and techniques for strengthening and retrofit, and to assist the phase of reconstruction. The mission focused on the behaviour of non-engineered structures, in particular those of adobe constructions. The findings of the mission confirmed that most of the damage was observed on adobe houses constructed with traditional non anti-seismic techniques which either collapsed or nearly collapsed, causing 519 deaths, 1,366 injuries and more than 58,000 houses destroyed. The mission also confirmed that buildings constructed according to modern earthquake resistant design standards performed with no evident damage. All the parties contacted during the mission, especially the EC Delegation, showed particular interest in the results of the present mission report, which will be taken into consideration when planning the reconstruction phase, especially of the most distant rural areas, where close collaboration between the Governmental Institutions, International Organizations, Universities and NGO’s, will be needed to assist the population for the adoption of earthquake resistant designs in the reconstruction of the destroyed houses.  相似文献   
76.
联动应急的工作平台建设是应急处置的一项基础性工作,包括联动应急的指挥平台和信息平台。指挥平台应坚持以应急管理流程为主线来设计,其主要内容包括各类支援平台、相关的数据库、管理指挥中心、各种保障体系等,其实现方式和途径可以设计为多维交互网络模型。联动应急信息平台的建设可从信息接入系统、信息服务系统以及信息交换平台、视讯展示平台等方面进行。  相似文献   
77.
地震应急信息管理技术研究和指挥首长信息查询系统实现   总被引:9,自引:0,他引:9  
帅向华 《地震》2006,26(3):93-98
从应急指挥的角度研究地震应急信息的分类和管理模式, 论述有效管理地震应急信息的关键技术; 同时, 借助GIS技术、 数据库技术和网络技术建成了地震应急信息管理的计算机应用系统国家防震减灾指挥中心首长信息查询系统。 文中详细介绍了首长信息查询系统实现的结构框架、 技术路线和主要功能, 该系统为我国“十五”期间开展的各区域抗震救灾指挥部技术系统的建设, 提供了一定的借鉴经验和示范作用。 该系统的WebGIS平台是ArcIMS, 数据库是Oracle, 空间数据库引擎是ArcSDE。  相似文献   
78.
基于TOPSIS评价法的城市应急避难所选址适宜性评价研究   总被引:1,自引:0,他引:1  
由于城市中人口高度聚集,一旦发生灾害需疏散受灾居民到应急避难所中,因此应急避难所选址的合理性与适宜性就成为研究的重点。本文从经济性、效率性、公平性、安全性、可达性及环境因素等6个方面出发,选取12个应急避难所选址适宜性评价因子,并构建评价指标体系;利用TOPSIS评价方法构建适宜性评价模型,对研究区42处备选应急避难所的适宜性进行评价,结果表明:优秀级别8个、良好级别10个、中等级别23个、差等级别1个。研究结果可为应急管理部门在选择应急避难所建设位置时提供决策依据。  相似文献   
79.
Anticipating the future is a key practice for the management of potential emergencies. Anticipatory action needs the future to become ready-to-hand. Focusing on the logics and practices of anticipatory action the paper discusses the relations between time and space in the context of risk and uncertainty. Spatializations of simulation technologies, preemptive emergency management and anticipatory action aim to disclose and extrapolate the future. In general, infrastructures are technologies which aim to materialize expectations concerning the future. In the case of emergency management infrastructural measures enable and/or constrain practices by inheriting specific logics.The concept of riskscapes (Müller-Mahn and Everts, 2013) poses to be a promising framework to grasp these issues. In our perspective, extrapolated riskscapes treat the future as an already interpreted and symbolically structured world. This involves not only looking at the temporality of riskscapes, but also dealing with geographies of inscribed futurity. Two case studies focusing on emergency management practices of firefighters will be deployed for illustration: the first observes the logics of preemptive emergency management and anticipatory action inscribed into materialities of infrastructures in the context of rail-bound hazmat transports; the second shows how computer simulations for crowded geographies facilitate decision-making and action for policing and crowd management.Instead of treating future in riskscapes as neutral, we highlight the politically situated practices that co-evolve with these technologies and their spatializations. The article discusses the dimension of time within riskscapes to gain a better understanding of the temporalization of space as in simulations and the spatialization of time as in infrastructures of emergency management.  相似文献   
80.
谢江丽  李帅  姚远 《中国地震》2019,35(2):389-398
利用统计年鉴、人口普查数据、遥感影像等资料,将乌鲁木齐市按区县级行政区域为单位提取近10年的人口数据,确定各区县历年来人口分布变化情况。挖掘研究区内人口-时间变量关系,建立人口预测模型——GM(1,1)模型,预测未来2年乌鲁木齐各区县人口数据,以弥补数据库数据因滞后2年无法及时更新所导致的数据空缺。  相似文献   
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