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浅析GIS通信本地网管理系统的建设 总被引：15，自引：3，他引：12
通信本地网是我国公用通信网的重要组成部分, 其管理工作以往一直是由人工完成的.要做好通信本地网的管理与维护工作, 必须采用先进的技术建立GIS通信本地网管理系统, 实现电信公司通信本地网的规划设计、工程施工、运行维护管理与统计分析等的计算机化, 为各相关部门提供多专业、多层次、多目标的综合服务.详细介绍了通信本地网管理的现状, 从基于管理、人员、电信发展以及新技术的发展等方面进行分析, 阐述了建立GIS通信本地网管理系统的必要性, 详细介绍了在建设系统时需要考虑的各种技术问题: 系统设计原则、系统应该遵照的标准、涵盖的资源、系统主要功能、数据管理模式、数据库选型、硬件选型和GIS平台的选择等.还介绍了基于MAPGIS平台开发的通信网络地理信息系统在全国的应用情况. 相似文献
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根据地下通信管线网络的特点与通信部门对管线网络规划、工程设计、维护管理与统计分析的实际需求,以通信主干管线为初始对象,以通信综合网络为终极目标,选用国产优秀地理信息系统基础软件平台———ＭＡＰＧＩＳ进行二次开发,建立地下通信管线动态信息管理系统,并对系统的应用现状与前景作了简要介绍． 相似文献
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从分析通信行业及通信网络的特点,现状入手,阐述了通信行业引入ＧＩＳ、建立通信网络地理信息系统的必然性。同时,针对我国地理信息系统应用的实际情况,夺国产优秀地理信息系统基础平台－ＭＡＰＧＩＳ应用于通信行业的历史及市场前景进行了粗略的回顾与展望 。 相似文献
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朱斌 《物探化探计算技术》2005,27(2):160-162
一个现代化大城市的有线电视网络是十分庞大复杂的,为了对有线电视网络资源进行有效管理和维护,利用地理信息系统(GIS)的网络规划设计管理等功能,建立有效的有线电视网格信息系统是十分必要的。在这里,以有线电视网为背景,讨论了地理信息系统的发展现状,地理信息系统的组成,GIS系统在有线电视网络管理中的必要性和优越性。针对有线电视网络的特点,描述了有线电视GIS综合管理系统的模块功能,如系统资源管理、信息查询等内容。 相似文献
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结合塔里木河南勘探公司网络改造工程，介绍通过电信VPN增值服务和IP语音技术，在网络数据通信的基础上实现语音通信，从而提高企业管理水平，降低生产成本。 相似文献
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实现办公自动化是土地管理部门提高管理水平的必由之路。随着信息技术的飞速发展，建设土地管理信息系统已被各级政府提上议事日程。由于土地管理信息系统涉及计算机、网络、通信、地理信息系统、数据库等多项高新技术，同时土地管理信息系统的建立又是一个长期渐进、逐步完善的过程，探索建立土地管理信息系统有多种思路和做法，郑州市土地管理局在学习借鉴先进城市成功经验的基础上，形成了建设郑州市土地管理信息系统的思路。 相似文献
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WebGIS研究及其在城市环境中的应用 总被引：7，自引：2，他引：7
地理信息系统与网络结合形成的网络地理信息系统是目前地理信息系统发展的一个重要方向。在分析了当今WebGIS的开发技术后，提出了基于IMS的全新WebGIS构造系统，并对该系统的主要功能进行了介绍。 相似文献
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Emily Keeble David I. Whiteside Michael J. Benton 《Proceedings of the Geologists' Association. Geologists' Association》2018,129(2):99-119
Pant-y-ffynnon Quarry in South Wales yielded a rich cache of fossils in the early 1950s, including articulated specimens of new species (the small sauropodomorph dinosaur Pantydraco caducus and the crocodylomorph Terrestrisuchus gracilis), but no substantial study of the wider fauna of the Pant-y-ffynnon fissure systems has been published. Here, our overview of existing specimens, a few described but mostly undescribed, as well as freshly processed material, provides a comprehensive picture of the Pant-y-ffynnon palaeo-island of the Late Triassic. This was an island with a relatively impoverished fauna dominated by small clevosaurs (rhynchocephalians), including a new species, Clevosaurus cambrica, described here from a partially articulated specimen and isolated bones. The new species has a dental morphology that is intermediate between the Late Triassic Clevosaurus hudsoni, from Cromhall Quarry to the east, and the younger C. convallis from Pant Quarry to the west, suggesting adaptive radiation of clevosaurs in the palaeo-archipelago. The larger reptiles on the palaeo-island do not exceed 1.5?m in length, including a small carnivorous crocodylomorph, Terrestrisuchus, and a possible example of insular dwarfism in the basal dinosaur Pantydraco. 相似文献
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Gilles Serge Odin 《Comptes Rendus Geoscience》2002,334(6):409-414
Lithostratigraphy, physicochemical stratigraphy, biostratigraphy, and geochronology of the 77–70 Ma old series bracketing the Campanian–Maastrichtian boundary have been investigated by 70 experts. For the first time, direct relationships between macro- and microfossils have been established, as well as direct and indirect relationships between chemo-physical and biostratigraphical tools. A combination of criteria for selecting the boundary level, duration estimates, uncertainties on durations and on the location of biohorizons have been considered; new chronostratigraphic units are proposed. The geological site at Tercis is accepted by the Commission on Stratigraphy as the international reference for the stratigraphy of the studied interval. To cite this article: G.S. Odin, C. R. Geoscience 334 (2002) 409–414. 相似文献
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The effect of water on accessory phase solubility in subaluminous and peralkaline granitic melts 总被引：4，自引：0，他引：4
The solubilities of columbite, tantalite, wolframite, rutile, zircon and hafnon were determined as a function of the water contents in peralkaline and subaluminous granite melts. All experiments were conducted at 1035 °C and 2 kbar and the water contents of the melts ranged from nominally dry to approximately 6 wt.% H2O. Accessory phase solubilities are not affected by the water content of the peralkaline melt. By contrast, solubilities are affected by the water content of the subaluminous melt, where the solubilities of all the accessory phases examined increase with the water content of the melt, up to 2 wt.% H2O. At higher water contents, solubilities are nearly constant. It can be concluded that water is not an important control of accessory phase solubility, although the water content will affect diffusivities of components in the melt, thus whether or not accessory phases will be present as restite material. The solubility behaviour in the subaluminous and peralkaline melts supports previous spectroscopic studies, which have observed differences in the coordination of high field strength elements in dry vs. wet subaluminous granitic glasses, but not for peralkaline granitic glasses. Lastly, the fact that wolframite solubility increases with increasing water content in the subaluminous melt suggests that tungsten dissolved as a hexavalent species. 相似文献
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Emmanuel Skourtsos Daniel Vachard Alexandra Zambetakis-Lekkas Rossana Martini Louisette Zaninetti 《Comptes Rendus Geoscience》2002,334(12):925-931
Some olistolites reworked in a Tertiary flysch of Mount Parnon (Peloponnesus, Greece) exhibit a Late Permian assemblage, dominated by Paradunbarula (Shindella) shindensis, Hemigordiopsis cf. luquensis and Colaniella aff. minima. This association corresponds to the Late Wuchiapingian (=Late Dzhulfian), a substage whose algae and foraminifera are generally little known. Contemporaneous limestones crop out in the middle part of the Episkopi Formation in Hydra, but they are rather commonly reworked in Mesozoic and Cainozoic sequences. The palaeobiogeographical affinities shared by the foraminiferal markers of Greece, southeastern Pamir, and southern China, are very strong (up to the specific level), and are congruent with the Pangea B reconstructions. To cite this article: E. Skourtsos et al., C. R. Geoscience 334 (2002) 925–931. 相似文献
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正20141596 Liu Yunhuan(School of Earth Sciences and Resources,Chang’an University,Xi’an 710054,China);Shao Tiequan Early Cambrian Quadrapyrgites Fossils of Xixiang Boita in Southern Shaanxi Province(Journal of Earth Sciences and Environment,ISSN1672-6561,CN61-1423/P,35(3),2013,p.39-43,3 illus.,20 refs.) 相似文献
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正20141719 Chen Zhijun(State Key Laboratory of Geological Processes and Mineral Resources,China University of Geosciences,Wuhan 430074,China);Chen Jianguo Automated Batch Mapping Solution for Serial Maps:A Case Study of Exploration Geochemistry Maps(Journal of Geology,ISSN1674-3636,CN32-1796/P,37(3),2013,p.456-464,2 illus.,2 tables,10 refs.) 相似文献
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正20140962 Chen Fenning(Xi’an Institute of Geology and Mineral Resources,Xi’an710054,China);Chen Ruiming Late Miocene-Early Pleistocene Ostracoda Fauna of Gyirong Basin,Southern Tibet(Acta Geologica Sinica,ISSN0001-5717,CN11-1951/P,87(6),2013,p.872-886,6illus.,56refs.) 相似文献
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正1.IGNEOUS PETROLOGY20142008Cai Jinhui(Wuhan Center,China Geological Survey,Wuhan 430205,China);Liu Wei Zircon U-Pb Geochronology and Mineralization Significance of Granodiorites from Fuzichong Pb-Zn Deposit,Guangxi,South China(Geology and Mineral Resources of South China,ISSN1007-3701,CN42-1417/P,29(4),2013,p.271-281,7illus., 相似文献
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正20141205Cheng Weiming(State Key Laboratory of Resources and Environmental Information System,Institute of Geographic Sciences and Natural Resources Research,CAS,Beijing 100101,China);Xia Yao Regional Hazard Assessment of Disaster Environment for Debris Flows:Taking Jundu Mountain,Beijing as an 相似文献