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山东省地震局防震减灾信息网发现状和趋势 总被引:1,自引:0,他引:1
系统地介绍了山东省地震局在防震减灾信息网站建设方面所取得的一些进展;结合我国防震减灾信息网的现状,提出了在网络环境下,网站信息服务的发展方向。 相似文献
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以山东省防震减灾信息网站为例,介绍了网页设计要点及日常维护的经验和体会,进而提出了网页进一步发展的新思路。 相似文献
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对加强地震政府网站地震突发事件信息保障工作的思考 总被引:1,自引:0,他引:1
地震政府网站是地震行业面向社会宣传防震减灾工作、服务公众的重要窗口.汶川、玉树地震后,地震工作越来越受到社会的关注,地震政府网站已成为社会公众和主流媒体、网站获取地震信息的重要平台,在抗震救灾中发挥着越来越重要的作用.本文通过地震政府网站在汶川、玉树等地震突发事件中信息保障工作的实践,从网站应急制度建设、编制网站应急预... 相似文献
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随着因特网技术的广泛应用和发展,信息网络的安全越来越受到关注和重视.同样,山西地震信息网络也受到了较大的安全威胁.指出从选用安全的口令、实施存取控制、保障数据的完整性和安全、做好数据的备份、使用防火墙和安装防病毒软件等措施可确保山西地震信息网络的安全正常运行. 相似文献
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Investigating evidential reasoning for the interpretation of microbial water quality in a distribution network 总被引:1,自引:1,他引:1
Rehan Sadiq Homayoun Najjaran Yehuda Kleiner 《Stochastic Environmental Research and Risk Assessment (SERRA)》2006,21(1):63-73
Total coliforms are used as indicators for evaluating microbial water quality in distribution networks. However, total coliform provides only a weak “evidence” of possible fecal contamination because pathogens are subset of total coliform and therefore their presence in drinking water is not necessarily associated with fecal contamination. Heterotrophic plate counts are also commonly used to evaluate microbial water quality in the distribution networks, but they cover even a wider range of organisms. As a result, both of these indicators can provide incomplete and highly uncertain bodies of evidence when used individually. In this paper, it is shown that combing these two sources of information by an appropriate data fusion technique can provide improved insight into microbial water quality within distribution networks. Approximate reasoning methods like fuzzy logic and probabilistic reasoning are commonly used for data fusion where knowledge is uncertain (i.e., ambiguous, incomplete, and/or vague). Traditional probabilistic frameworks like Bayesian analysis, reasons through conditioning based on prior probabilities (which are hardly ever available). The Dempster–Shafer (DS) theory generalizes the Bayesian analysis without requiring prior probabilities. The DS theory can efficiently deal with the difficulties related to the interpretation of overall water quality where the redundancy of information is routinely observed and the credibility of available data continuously changes. In this paper, the DS rule of combination and its modifications including Yager’s modified rule, Dubois–Prade disjunctive rule and Dezert–Smarandache rule are described using an example of microbial water quality in a distribution network. 相似文献
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依托公共安全信息化工程,测震台网数据管理平台在数据资源池环境下,采用分层架构和模块化开发,实现了实时流波形接入和存储、站网基础信息管理、常规数据产品产出、针对特定地震的产品产出、波形数据质量分析等测震台网核心业务的信息化。通过平台的接口和界面,事件波形处理与服务、数据质量分析、震源参数基础数据库建设等测震台网业务取得了长足进步。该平台具有业务集成性、功能实用性、资源共享性和技术先进性等特点,有效提升了测震台网信息化水平,为测震台网现代化发展发挥了积极作用。 相似文献
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地震速报与互联网络 总被引:1,自引:1,他引:0
赵仲和 《地震地磁观测与研究》1997,18(5):26-32
考虑到我国遥测地震台网承担的主要任务,提出了利用互联网络进一步发挥遥测地震台网地震速报作用的构想。其基本点是:在合理规划和统一的信息递约定基础上,利用互联网络技术和设施辅以必要的专用软件,实现遥测台网数据信息的快速通报、汇集、组织与发布,从而更好地为防震减灾特别是大地震应急服务。文中提出宜区分“下式速报”和“非正式地震信息通告”。 相似文献
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当前大型地震区域监控系统采用有线网络对人工指挥台进行数据传输,易导致灾害条件下受损无法及时有效地传通监控结果,存在地震实时监测信息准确性低、系统稳定性差的问题。因此设计基于物联网的大型地震区域监控系统。该设计系统进行数据采集交换的网络拓扑采用ZIGBEE实现通信。基于VS.NET基础设计系统架构,通过地震的现场指挥部建设支持可视化的调度指挥台,实现综合调度和集中指挥的目的。系统中智能地震救灾控制中心采用服务器进行数据存储和智能运算,实现对地震检测区的精准、高效检测和工作指导。通过数据采集交换与应急调度平台,监测地震实时监控与设备使用情况。采用地震救灾数据采集分析软件对物联网中地震区域监测数据进行全面、准确分析,系统采用多源信息融合技术实现地震救灾信息多视角的全面处理。实验结果说明,所设计系统测算结果实时性高、功耗低,具有较高的准确度和稳定性。 相似文献
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防震减灾技术系统的建设与发展 总被引:6,自引:6,他引:6
阴朝民 《地震地磁观测与研究》2001,22(6):1-12
本文论述了甸防震减灾技术系统的建设与发展,分别从地震监测技术系统,地震信息网络系统,地震应急指挥技术系统以及地震紧急救援技术等四个方面论述了系统的现代化建设。重点介绍了地震及前兆数字化观测技术的发展以及数字地震及前兆台网的规模及作用。 相似文献
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Regional watershed characterization and classification with river network analyses 总被引:1,自引:0,他引:1 下载免费PDF全文
Cédric Gaucherel Romain Frelat Ludovic Salomon Bastien Rouy Neha Pandey Christophe Cudennec 《地球表面变化过程与地形》2017,42(13):2068-2081
In order to understand and manage a hydrological region, one usually needs to comprehensively characterize the watersheds (basins) and their river networks. This usually and primarily involves analysis of hydrological and geomorphological properties of the watershed derived from the digital terrain model (DTM), but this approach neglects the information content of the associated river networks. In this study, we used a combination of traditional DTM and original river network‐related indices to the watersheds of an understudied region, Haiti. We also used Monte Carlo simulations to estimate index confidence levels of these indices. Compared to commonly used indices, the network indices provided valuable information that could then be used in statistical analyses as a way to identify the dominant features of the country's watershed morphology. On this basis, we identified four watershed groups in Haiti: (i) high, elongated watersheds, (ii) lowlands, with sinuous networks and relatively slow runoff, (iii) high watersheds with dendritic networks, and (iv) lowlands with high downstream–upstream contrast in properties and rapid runoffs. We argue that river network features provide complementary information in terms of flow topology, highly relevant to characterize contrasting relief countries, such as Haiti. Hence, more exhaustive characterization of watersheds would predictably benefit from the approach outlined in this paper. Copyright © 2017 John Wiley & Sons, Ltd. 相似文献
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地震信息系统在地震监测预报预警、地震灾害风险防控、地震应急响应与处置等方面发挥着重要的作用,但地震行业尚未建立完整的信息系统安全评价体系,且相关研究开展较少。为了更好地识别安全风险,提高地震信息网络安全防护能力,作者利用可拓方法建立信息系统评价模型,通过程序自动进行指标权重和关联度的计算,输出系统评价等级。实例表明:可拓方法可为地震信息系统安全评价、网络安全等级保护等提供支撑,并具有应用价值。本研究为评价指标的进一步优化调整,以及自动评价软件的完善和应用提供重要的基础。 相似文献