共查询到19条相似文献，搜索用时 140 毫秒
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张庆合 《物探化探计算技术》2007,29(5):450-454
从网格概念出发,详细介绍了实现地质图协同编辑的SIG(SPATIAL INFORMATIONGR ID)空间信息网格技术,以及国家地质空间信息网格体系的结构和服务机制。国家地质空间信息网格采用万维网体系架构,以资源和信息共享、协同为主线,构成一个三层次体系架构。主要组成为:网格应用层、网格平台层、网格基础设施。并针对地质图空间数据共享与服务,设计了地质图服务流程,提供了信息查询、信息服务页面,展示了地质图的在线协同编辑。 相似文献
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基于空间信息网格（SIG）的矿产资源评价 总被引：2，自引：0，他引：2
随着GIS的普及和深化,空间信息的大数据量、高复杂性和难共享的问题对其研究和应用提出了新的挑战.空间信息网格(Spatial Information Grid,SIG)作为创新性的网络空间信息基础设施和技术体系,为解决这些问题提供了新的契机.本文在给出SIG基本定义和基本特征的基础上,就如何实现基于SIG的矿产资源评价进行了有益的探索和实践,并取得了很好的效果,为矿产资源评价提供了新的方法和思路. 相似文献
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智能终端和移动互联网的快速发展使得移动空间信息服务成为数字城市和数字地球的重要内容,而各种基于定位导航的嵌入式地理信息系统(geographic information system,GIS)也逐步成为这类信息服务的主要方式.分析了现代移动空间信息服务的特征,采用层次式模块化的方法,介绍了基于GIS的可移植抽象层、多元数据存储模型、电子地图显示引擎和高性能应用服务引擎等关键模块的设计,设计了可移植的嵌入式GIS平台,为通用的移动空间信息服务移动端的应用开发提供了一个切实可行的方案. 相似文献
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正HSE(健康(Health)、安全(Safety)和环境(Environment))管理是20世纪80年代后期发展起来的关于健康、安全和环境的管理方法,它运用系统的分析方法,对企业生产过程中可能发生的事故隐患进行风险评价和危害识别,通过计划(Plan)、实施(Do)、检查(Check)和改进(Action)等4个阶段,采用系统化、结构化、程序化和全员化的管理模式,达到全员参与和全程监控地采取预防措施,及时消除各类事故隐患的目的。在中国恩菲实施"走出去"战略,与国外众多工程公司打交道的过程中,也对各家的HSE管理有所了解。虽 相似文献
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·基础设施项目投资14866亿元,占比超四成·积极吸收民间资本参与本刊讯近日,四川省政府新闻办公室、四川省发改委在重大投资项目暨民间投资发布会上公布了《四川省重大投资项目名录(2012～2013年)》,四川省今、明两年将着力实施2242个投资项目,总投资3.67万亿元,主要包括基础设施、产业项目、民生工程及社会事业、生态建设和环境保护等4类项 相似文献
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土地利用规划实施评价是根据一定的标准,运用一定的方法,对规划执行的效果进行分析、比较与综合后所做出的一种价值判断。通过规划实施评价,可以全面而有效地检验规划的实施过程和效果。形成相关的信息反馈。从而为规划的内容调整、政策设计、实施制度更新等提出有效的建议,使规划实施进入良性循环。我国对土地利用规划实施评价研究刚起步,是土地管理领域中的一项新课题。而在规划实施过程中,政府对各部门执行土地利用规划的情况很难评价,只能从表面的数字进行比较分析。对规划实施的效果、执行的力度。还没有科学的评价体系与标准。 相似文献
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面向服务的分布式空间信息支撑平台 总被引：13，自引：10，他引：3
基于Web服务技术构建空间信息系统有助于提高其可扩展性和互操作能力, 该技术也是这一领域中的热点.提出了一种面向服务的模型框架, 并基于该框架提出了基于Web服务的网格层次体系结构, 并给出一种Web服务与空间信息技术相融合的机制, 介绍了基于Web服务的空间信息网格支撑环境的总体结构和设计原理, 为基于Web服务的空间信息系统设计与实现提供了一种新的方法. 相似文献
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美国长期生态学研究网络的战略规划——走向综合科学的未来 总被引：2，自引：0，他引：2
从2004年11月起至今,美国长期生态学研究网络在美国国家科学基金会的资助下,为未来(几)十年的综合和网络层面研究进行了战略规划.规划的最终目标是形成一个新的长期生态学研究(LTER)网络层面科学计划,并通过1个科学课题组、7个网络科学工作组和一系列研讨会来进行.在制定和完善科学计划的过程中,规划行动获得了LTER网络层面科学的跨学科问题、概念框架、基本科学问题、社会与环境综合科学动议、网络计算机基础设施的战略规划、教育与宣传战略规划等重大科学产出.规划的意义在于它告诉了怎样走向LTER的未来--网络层面综合科学,因而有利于LTER及长期生态研究的发展,并可为CERN等其他长期生态学研究网络的规划与发展提供启示. 相似文献
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Nives Grasso Andrea Maria Lingua Maria Angela Musci Francesca Noardo Marco Piras 《Natural Hazards》2018,90(2):623-637
Every year, there are almost 50,000 forest fires in Europe (127/day), which have burned an area equal to more than 450,000 ha. An effective management of forest fires is therefore fundamental in order to reduce the number of the fires and, especially, the related burned areas, preserving the environment and saving human lives. However, some problems still exist in the structure of information and in the harmonization of data and fire management procedures among different European countries. Pursuing the same interoperability aims, the European Union has invested in the development of the INSPIRE Directive (Infrastructure for Spatial Information in Europe) to support environmental policies. Furthermore, the EU (European Union) is currently working on developing ad hoc infrastructures for the safe management of forests and fires. Moving from this premises and following an analysis of the state of the art of information systems for forest fire-fighting, in the light of the end-user requirements, the paper presents the INSPIRE—compliant design of a geographical information system, implemented using open-source platforms. 相似文献
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Interoperability is becoming essential for the today’s geographic information systems. Geographic information is usually available as datasets stored in databases and accessible via GIS. However, these information sources are increasingly heterogeneous and show differences in data formats, database schema and object concepts. To satisfy the increased demand for the use and sharing of geographic data in common applications, considering the heterogeneity and the methods to support interoperability are required by the GIS community. The implementation of Spatial Data Infrastructure (SDI) such as the European INSPIRE (Infrastructure for Spatial Information in the European Community) enables accessibility and the sharing of geographic data and interoperability among the systems. In addition to this, traditional GIS systems perform spatial queries using a keyword-based method. However, this approach remains incapable of fully expressing the users' needs due to a lack of geographic concepts (semantics) in the dataset. Different terms may refer to similar concepts, while the same terms may refer to different concepts. This causes semantic heterogeneity in the dataset. In this context, the most promising approach is the implementation of geospatial semantics by means of ontology in the geospatial dataset to overcome this kind of ambiguity. The aim of this research is to investigate the implementation of INSPIRE as a SDI standard and the use of Semantic Technology to empower the traditional GIS approach. In this regard, a public transportation geoportal has been developed for the experimental investigation which uses a revised sample transportation data complaint with the INSPIRE Transport Network Data Theme and a developed Transportation Ontology Domain, including concepts, relationships and individuals to provide a semantic spatial search. 相似文献
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Riccardo Albertoni Monica De Martino Paola Podestà Andreas Abecker Roman Wössner Karsten Schnitter 《Earth Science Informatics》2018,11(4):525-544
The paper illustrates a Linked Thesaurus Framework for the Environment, named LusTRE, to facilitate data sharing across different environmental disciplines. It provides a knowledge infrastructure of multilingual thesauri and code lists, interlinking them so that they can be used as one integrated linked data source. This multilingual thesaurus is published according to the Linked Data Best Practices and supports metadata compilation and data discovery for describing and finding Environmental geodata. A human readable web interface is provided for the exploitation of LusTRE as well as a set of web services for programmatic access to the knowledge infrastructure. LusTRE has been exploited within the European directive INSPIRE and SEIS piloting testbeds implemented within the EU project eENVplus in order to support cross-border and cross-domain data sharing. It is aimed at supporting multilingual data search and query refinement. In order to show how interlinked content can help users to more easily express metadata within Spatial Data Infrastructures (SDI), LusTRE web services have been integrated within existing metadata editors and geoportals. 相似文献
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Ana María Fernández-Maldonado 《Geoforum》2008,(6):1884-1896
In many cities of the developing world, poor residents occupy land and build their dwellings before infrastructure is provided. Expanding the infrastructure networks for the poor is a long, expensive and complicated affair. Before the 1990s, the public sector was generally in charge of the basic services; but these services have been liberalized and, in many cases, privatized since then. In this new context, a relevant question is: have these reforms contributed to urban integration? Or, on the contrary, have they contributed to deepen urban fragmentation? This study presents the case of water and telecommunications services in Lima, Peru, the most contested and politically sensitive urban sectors. The objective is to test Graham and Marvin’s claims about the splintering of networked infrastructures expressed in Splintering Urbanism.The findings show that the reforms have improved the situation at aggregate level, but there is still no sustainable solution for the crucial dilemma of cities with high poverty restrictions: self-financed network expansions versus service affordability. The diverging paths of the utilities reform in Lima illustrate that privatization is not the main issue in the discussion to expand the networks for the poor. The main conclusion is that sensible policies complemented with carefully targeted subsidies and continuous regulation can successfully provide water for all. Good governance practices at the urban level help to achieve this goal. Water and telecommunications in Lima also show that are no general solutions for the universalization of the services; each city is different and some sectors are much more complex and problematic than others. This demands careful and continuous technical and political consideration of the local circumstances to reform the utilities. 相似文献
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主要发达国家地质信息服务的政策体系及其特点 总被引：3，自引：0，他引：3
信息服务政策是信息服务顺利实施的保障。美、加、澳和英国等主要发达国家的地质调查机构制定并执行了一系列的信息服务政策。这些政策规定了服务的对象、内容、定价、合作伙伴关系、信息发布、客户关系、服务质量等方面的行为准则,涵盖了实施信息服务涉及的所有主要行为,已经形成了比较完整的体系。从以下几个方面阐述了上述主要发达国家信息服务政策体系的特点:信息自由法、版权对地质信息服务的影响,比较完善的定价政策、价格体系和重视用政策、标准规范信息服务。 相似文献
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以中国寒区旱区特有的自然背景为研究基础,将40多年针对寒区旱区自然资源、生态环境、工程建设、经济建设等研究中积累的大量的特色数据进行分类。从方便数据采集和数据应用出发,将专业特色数据以关系数据、空间数据、二进制数据和文本数据的形式分三级数据库群结构组建成寒区旱区资源环境研究特色数据集。从共享机制和共享技术两方面对数据共享的几个主要因素进行了说明。同时就如何在以高性能计算和网络为核心开展深层次的数据服务方面,从数据平台建设、基于Web的远程计算和数据网格3个方面进行了尝试。 相似文献
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新疆大喀纳斯旅游区游客的生态系统服务消耗研究 总被引：1，自引：0，他引：1
生态系统服务消耗是生态经济相关研究领域关注的热点。以新疆大喀纳斯旅游区为实证点,在游客消费的生态系统服务类型分析基础上,利用物质量法与能值分析法,结合调研数据和统计资料,尝试从景区这类较小尺度空间开展游客生态系统服务消耗计量与分析。结果表明：2010年游客生态系统服务消耗总量为2.54×1019sej;游客食、住、行、游、娱、环卫等结构中餐饮活动的生态系统服务消耗水平最高,占总消耗的46.48%,其次为游憩活动的消耗水平,占总消耗量的27.76%。游客物质产品类生态系统服务的消耗比重最大,占总消耗的44.52%,此类服务中又以食物消耗所占比重最大;生态安全维护类生态系统服务消耗占总消耗的比重为27.72%,此类服务中CO2固定和废物吸收处理所占比重较大。 相似文献
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Turkey currently lacks a fully functional flood forecasting system (FFS). However, the studies necessary for establishing such a system are still being performed by the Turkish State Meteorological Service. The main purpose of this study was to determine the technical architecture of the FFS intended to be developed in Turkey and to design a flood forecasting and inundation-mapping system integrated with spatial data infrastructure (SDI). Because SDIs provide interoperability among the institutions by enabling collective use of data and services, this enables decision makers to take correct and rapid decisions regarding the forecasting. In the design of the system, the Web services architecture presented by the open geospatial consortium that develops international standards for SDI realizations was taken as a basis. Designed with flexibility and an expandable architecture, the system will enable instant access to up-to-date data from different institutions through Web services and meets the requirements of a real-time FFS. While the criteria requiring the expansion of the designed system were explained, its implementation was left for future studies. 相似文献
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选择四川省雅安市雨城区为研究区域,以该区降雨型滑坡为数据样本,结合粗糙集理论,提取了研究区域的降雨因子和地质因子作为条件属性因子,利用粗糙集的计算机挖掘和智能知识发现功能,分析得到了预测降雨型滑坡发生与否的有价值的规则集。所生成的决策规则能够实现该区域滑坡的预测预报。研究结果表明:本方法较传统的统计方法更符合降雨型滑坡预测的非线性关系,而且考虑了地质因素的影响,较单纯降雨阈值的预测方法有更高的空间分辨率。 相似文献