首页 | 本学科首页   官方微博 | 高级检索  
相似文献
 共查询到20条相似文献,搜索用时 62 毫秒
1.
针对城市防灾工作的特点,将GIS技术应用到城市防灾减灾工作中,开发了基于GIS的淄博市防灾减灾决策系统.该系统是一个以信息管理、灾害分析、救灾决策为内容的综合系统,可实现直观、实时、快速的灾害监控分析与救灾指挥决策,为城市的安全提供保障.  相似文献   

2.
介绍了以.net2.0为开发平台,利用ArcGIS Engine9.2组件库,开发海洋倾倒区管理与分析系统的总体设计、关键技术和主要步骤.该系统在具备了对海洋倾倒区查询、分析的基础上,实现了基于GIS技术的可视化管理,为海洋环境管理部门对海洋倾废区使用情况的管理和决策提供可靠的决策支持.  相似文献   

3.
城市生命线地震震害相互影响   总被引:6,自引:0,他引:6  
电力、煤气、交通、给排水、通信等城市生命线系统 ,虽然各成系统并各自独立运行 ,但由于生命线之间存在互用性、相互制约性与互相替代性、近距离共存性等特性 ,地震灾害发生后 ,不同的生命线之间产生多种形式的震害影响。对中国唐山地震、美国北岭地震和日本兵库县南部地震等严重地震灾害城市生命线震害的研究表明 ,生命线之间震害的主要影响形式是构造影响、机能影响、恢复障碍影响和诱发次生灾害等。依据多次严重地震灾害生命线震害的事实 ,绘制了生命线震害相互影响图。以该图为基础 ,提出了一种生命线对其它生命线的影响度概念 ,给出了各生命线影响度的计算式。比较研究了生命线影响度序与震后恢复时序的相关性。分析了以影响度序为基础确定生命线震后恢复时序的依据以及影响震后恢复时序的主要因素。实践表明 ,生命线震后影响度序与震后恢复时序有很高的吻合性。  相似文献   

4.
本文主要介绍了以.net2.0为开发平台,利用ArcGIS Engine9.2组件库,开发海洋倾倒区管理与分析系统的总体设计、关键技术和主要步骤。该系统在具备了对海洋倾倒区查询、分析的基础上,实现了基于GIS技术的可视化管理,为海洋环境管理部门对海洋倾废区使用情况的管理和决策提供可靠的决策支持。  相似文献   

5.
电力、煤气、交通、给排水、通信等城市生命线系统,虽然各成系统并各自独立运行,但由于生命线之间存在互用性、相互制约性与互相替代性、近距离共存性等特性,地震灾害发生后,不同的生命线之间产生多种形式的震害影响。对中国唐山地震、美国北岭地震和日本兵库县南部地震等严重地震灾害城市生命线震害的研究表明,生命线之间震害的主要影响形式是构造影响、机能影响、恢复障碍影响和诱发次生灾害等。依据多次严重地震灾害生命线震害的事实,绘制了生命线震害相互影响图。以该图为基础,提出了一种生命线对其它生命线的影响度概念,给出了各生命线影响度的计算式。比较研究了生命线影响度序与震后恢复时序的相关性。分析了以影响度序为基础确定生命线震后恢复时序的依据以及影响震后恢复时序的主要因素。实践表明,生命线震后影响度序与震后恢复时序有很高的吻合性。  相似文献   

6.
ArcGIS Engine开发的GIS应用程序可以脱离ArcGIS Desktop而运行,许多通用的GIS功能都被添加到了组件库中,这样便省去了大部分的编程工作。本文介绍了ArcGIS Engine9.1与C#联合编程,结合震害预测专业模型,实现了GIS基本功能及专业功能,并应用到城市建筑物震害预测中,取得了较好效果。  相似文献   

7.
基于GIS的市场营销系统应用   总被引:1,自引:0,他引:1  
王瑞珍 《太原科技》2006,(3):51-52,55
探讨了基于GIS的市场营销系统应用,该系统以GIS软件为平台,将与市场营销中发生大量的有关数据进行存储、管理和分析,为决策提供依据。  相似文献   

8.
组件式GIS二次开发可以简化GIS软件的开发流程、减少开发工作量,为专用GIS开发提供一种简便开发方法,利用它可以方便快捷地开发出高聚合、低耦合的专用GIS软件.基于MapGIS K9平台利用证据权法成矿预测理论对DPIS软件进行了移植开发,新的DPIS软件基于VS2008加MapGIS K9开发平台模式,充分利用数据中心系统组件库提供的组件、控件功能进行开发,依证据权成矿预测流程设计所需的子程序,并集成到通用GIS平台上,快速实现成矿预测功能.  相似文献   

9.
基于GIS的滑坡信息管理和预测预报系统的设计   总被引:1,自引:0,他引:1  
探讨了基于GIS的滑坡信息管理和预测预报系统的设计。该系统以GIS软件MapInfo为平台,将与滑坡发生有关的多种数据进行存储、管理和分析,然后在充分考虑滑坡稳定性与各因素之间的统计相关性和位置相关性的基础上,建立滑坡影响因子叠加预测模型和神经网络预测模型。该系统不仅可以有效地管理滑坡数据,而且可以进行滑坡预测预报,为决策提供依据。  相似文献   

10.
上海市电磁辐射地理信息系统的开发与应用   总被引:2,自引:0,他引:2  
以上海市电磁辐射地理信息管理系统的开发为例,阐述了地理信息系(GIS)在城市电磁辐射管理中的应用。详细介绍了电磁辐射GIS的建立过程、功能与应用,该系统为管理层决策和上海市新一轮的城市规划提供了相关的技术依据。  相似文献   

11.
Language markedness is a common phenomenon in languages, and is reflected from hearing, vision and sense, i.e. the variation in the three aspects such as phonology, morphology and semantics. This paper focuses on the interpretation of markedness in language use following the three perspectives, i.e. pragmatic interpretation, psychological interpretation and cognitive interpretation, with an aim to define the function of markedness.  相似文献   

12.
The discovery of the prolific Ordovician Red River reservoirs in 1995 in southeastern Saskatchewan was the catalyst for extensive exploration activity which resulted in the discovery of more than 15 new Red River pools. The best yields of Red River production to date have been from dolomite reservoirs. Understanding the processes of dolomitization is, therefore, crucial for the prediction of the connectivity, spatial distribution and heterogeneity of dolomite reservoirs.The Red River reservoirs in the Midale area consist of 3~4 thin dolomitized zones, with a total thickness of about 20 m, which occur at the top of the Yeoman Formation. Two types of replacement dolomite were recognized in the Red River reservoir: dolomitized burrow infills and dolomitized host matrix. The spatial distribution of dolomite suggests that burrowing organisms played an important role in facilitating the fluid flow in the backfilled sediments. This resulted in penecontemporaneous dolomitization of burrow infills by normal seawater. The dolomite in the host matrix is interpreted as having occurred at shallow burial by evaporitic seawater during precipitation of Lake Almar anhydrite that immediately overlies the Yeoman Formation. However, the low δ18O values of dolomited burrow infills (-5.9‰~ -7.8‰, PDB) and matrix dolomites (-6.6‰~ -8.1‰, avg. -7.4‰ PDB) compared to the estimated values for the late Ordovician marine dolomite could be attributed to modification and alteration of dolomite at higher temperatures during deeper burial, which could also be responsible for its 87Sr/86Sr ratios (0.7084~0.7088) that are higher than suggested for the late Ordovician seawaters (0.7078~0.7080). The trace amounts of saddle dolomite cement in the Red River carbonates are probably related to "cannibalization" of earlier replacement dolomite during the chemical compaction.  相似文献   

13.
何延凌 《科技信息》2008,(4):258-258
Language is a means of verbal communication. People use language to communicate with each other. In the society, no two speakers are exactly alike in the way of speaking. Some differences are due to age, gender, statue and personality. Above all, gender is one of the obvious reasons. The writer of this paper tries to describe the features of women's language from these perspectives: pronunciation, intonation, diction, subjects, grammar and discourse. From the discussion of the features of women's language, more attention should be paid to language use in social context. What's more, the linguistic phenomena in a speaking community can be understood more thoroughly.  相似文献   

14.
AcomputergeneratorforrandomlylayeredstructuresYUJia shun1,2,HEZhen hua2(1.TheInstituteofGeologicalandNuclearSciences,NewZealand;2.StateKeyLaboratoryofOilandGasReservoirGeologyandExploitation,ChengduUniversityofTechnology,China)Abstract:Analgorithmisintrod…  相似文献   

15.
理论推导与室内实验相结合,建立了低渗透非均质砂岩油藏启动压力梯度确定方法。首先借助油藏流场与电场相似的原理,推导了非均质砂岩油藏启动压力梯度计算公式。其次基于稳定流实验方法,建立了非均质砂岩油藏启动压力梯度测试方法。结果表明:低渗透非均质砂岩油藏的启动压力梯度确定遵循两个等效原则。平面非均质油藏的启动压力梯度等于各级渗透率段的启动压力梯度关于长度的加权平均;纵向非均质油藏的启动压力梯度等于各渗透率层的启动压力梯度关于渗透率与渗流面积乘积的加权平均。研究成果可用于有效指导低渗透非均质砂岩油藏的合理井距确定,促进该类油藏的高效开发。  相似文献   

16.
As an American modern novelist who were famous in the literary world, Hemingway was not a person who always followed the trend but a sharp observer. At the same time, he was a tragedy maestro, he paid great attention on existence, fate and end-result. The dramatis personae's tragedy of his works was an extreme limit by all means tragedy on the meaning of fearless challenge that failed. The beauty of tragedy was not produced on the destruction of life, but now this kind of value was in the impact activity. They performed for the reader about the tragedy on challenging for the limit and the death.  相似文献   

17.
本文叙述了对海南岛及其毗邻大陆边缘白垩纪到第四纪地层岩石进行古地磁研究的全部工作过程。通过分析岩石中剩余磁矢量的磁偏角及磁倾角的变化,提出海南岛白垩纪以来经历的构造演化模式如下:早期伴随顺时针旋转而向南迁移,后期伴随逆时针转动并向北运移。联系该地区及邻区的地质、地球物理资料,对海南岛上述的构造地体运动提出以下认识:北部湾内早期有一拉张作用,主要是该作用使湾内地壳显著伸长减薄,形成北部湾盆地。从而导致了海南岛的早期构造运动,而海南岛后期的构造运动则主要是受南海海底扩张的影响。海南地体运动规律的阐明对于了解北部湾油气盆地的形成演化有重要的理论和实际意义。  相似文献   

18.
19.
The elongation method,originally proposed by Imamura was further developed for many years in our group.As a method towards O(N)with high efficiency and high accuracy for any dimensional systems.This treatment designed for one-dimensional(ID)polymers is now available for three-dimensional(3D)systems,but geometry optimization is now possible only for 1D-systems.As an approach toward post-Hartree-Fock,it was also extended to  相似文献   

20.
Various applications relevant to the exciton dynamics,such as the organic solar cell,the large-area organic light-emitting diodes and the thermoelectricity,are operating under temperature gradient.The potential abnormal behavior of the exicton dynamics driven by the temperature difference may affect the efficiency and performance of the corresponding devices.In the above situations,the exciton dynamics under temperature difference is mixed with  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