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从离线数据提供到在线地理信息服务 总被引:3,自引:1,他引:2
当前,数字中国地理空间框架建设不断深入,网络化地理信息应用如雨后春笋,正深刻地影响着我国广大用户使用地理信息的方式与频率.为了有效的提供地理信息公共服务,应以一体化的地理信息资源为基础,以网络化地理信息服务为手段,以协同式运行维护与更新为保障,建设地理信息公共服务平台,实现从离线数据提供到在线地理信息服务的根本性转变,向政府、企业和公众提供一站式地理信息服务.本文重点分析了在线地理信息服务的基本技术需求,讨论了在线地理信息服务的主要内容、长期持续服务机制等问题. 相似文献
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分析了大数据时代测绘地理信息服务呈现出的新特点、新趋势,研究了大数据给测绘地理信息服务带来的机遇和挑战,提出了大数据时代测绘地理信息服务的“5v”要求,并就推进测绘地理信息服务转型升级提出建议。 相似文献
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测绘地理信息成果的共享服务和社会化消费是当前行业发展的主流趋势,但受限于相关保密政策,精度较高的地理信息成果当前仅能在政府相关部门内部使用,企业需求与数据供给之间矛盾突出。本文从资源整合入手,提出了线下高精度数据和在线低精度数据结合应用新模式,为规划设计成果的量化分析、三维可视化、在线展示和公众参与提供了一种技术解决思路,可有效提升地理信息成果的利用效率和服务能力。 相似文献
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日前,在北京召开的“2011年中国地理产业大会”上,由烟台市地理信息中心组织完成的“数字烟台地理空间信息公共平台”项目,荣获2011年中国地理信息优秀工程金奖。多年来,烟台市政府高度重视测绘与地理信息工作,始终坚持“服务大局、服务社会、服务民生”的测绘工作宗旨, 相似文献
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王红闯 《资源导刊(河南)》2019,(6):1-1
“大数据、云平台、人工智能”这些耳熟能详的科技,正在以一种前所未有的力量改变着社会生产力的发展方式。面对新形势,如何发挥测绘地理信息的技术优势、人才优势和数据优势,以测绘地理信息服务高质量助推自然资源管理和经济高质量发展,是一个全新的课题。 相似文献
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应对地理信息在线服务需求建设国家地理信息公共服务平台 总被引:3,自引:0,他引:3
随着我国信息化建设的不断深入,各地基础地理信息资源不断丰富,应用日趋广泛。但在网络化内容服务、多尺度互联互通等方面尚不能有效地满足政府、专业部门和公众的多层次需求。为切实转变测绘公共服务方式,提高测绘公共服务水平,充分发展地理信息资源的基础性作用,更好地满足防灾减灾、应急管理和信息化建设等各方面的需求, 相似文献
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Based on the hydrographic data in austral summer during the 22nd Antarctic Expedition of China(2005/2006),some features can be found about the northern margin of Emery ice shelf as follows.The heat content in the surface layer(0-50 m) at the eastern end and the western end of the ice-shelf margin is much higher than that at the middle.The upper mixing-layer depth and the seasonal thermocline depth at the middle of the ice-shelf northern margin are much shallower than those at the both ends.However there is much less difference between the middle and the ends in the bottom layer.The remote sensing photos show that the inhomogeneity in the surface-layer water is closely related to the spatial distribution of the floes and polynia in the area. 相似文献
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Phylogenetic analysis based on 16S rDNA of 8 strains of cultivable bacteria isolated from Arctic sea-ice was studied.The results showed that strain BJ1 belonged to genus Planococcus,which was a genus of low mole percent G C gram-positive bacteria;strain BJ6 belonged to genus Burkholderia of β-proteobacteria and the rest 6 strain all belonged to γ-proteobacteria,of which strain BJ8 was a species of Pseudoalteromonas,strain BJ2-BJ5 and BJ7 were members of genus Psychrobacter.Phylogenetic analysis also indicated that bacteria of genus Psychrobacter of the isolates formed a relatively independent phylogenetic cluster in comparison with other bacteria belonged to genus Psychrobacter. 相似文献
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《极地研究(英文版)》2014,(3)
正1 Aims and Scope Advances in Polar Science(APS)is an international,peer-reviewed journal jointly sponsored by the Polar Research Institute of China and the Chinese Arctic and Antarctic Administration.APS is a comprchensive academic journal dedicated to presentation of multi-disciplinary achievements in Arctic and Antarctic expeditions and research.Its primary purpose is to publish achievements in fundamental research,applied 相似文献
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《山地科学学报》2014,(4):I0004-I0009
<正>AIMS AND SCOPE(Editorial Policy)The Journal of Mountain Science(JMS)is devoted to mountains and their surrounding lowlands-ecoregions of particular global importance,with a particular emphasis on the important highlands/mountains in the world,such as the Tibetan Plateau,the Himalayas,the Alps,the Andes,the Rockies and many other mountain ranges of our planet. 相似文献
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《山地科学学报》2014,(4)
<正>The Journal of Mountain Science(JMS),founded in2004,is an international English-language journal on mountain sciences.JMS is supervised by the Chinese Academy of Sciences(CAS),sponsored by the Chengdu Institute of Mountain Hazards and Environment,CAS,published by Science Press China,and distributed by Springer exclusively throughout the world(excluding Mainland China).The JMS is published bimonthly,fulltexted in SpringerLink and CNKI,indexed/abstracted by 相似文献
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References: 《极地研究(英文版)》2007,18(1):73-83
Using the NCEP/NCAR reanalysis monthly 500 hPa height data on a 2.5 latitude-longitude grid and 1°×1° sea ice data,the polar vortex area,intensity index and arctic sea ice area index are calculated respectively,and the meridional distribution,period variation and the abrupts in the long range trend are analyzed to study their relationship.The results show that the meridional distribution of sea ice and polar vortex h-ave distinctive difference,the relative positions of them are different in the eastern and western hemispheres,and exept they have periods of 4 months,quasi half year,quasi year,4-5 years and 10 years commonly,and each of them has its own respective variation as well.The sea ice area is decreasing apparently since 1980's,so is the polar vortex area,but their abrupt changge time are different totally.The area of sea ice and polar vortex has prominent positive correlation,but the relationship of sea ice intensity,polar vortex intensity,polar vortex area is complicated. 相似文献
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The ability of cell to modulate the fluidity of plasma membrane was crucial to the survival of microorganism at low temperature. Plasma membrane proteins, fatty acids and carotenoids profiles of Antarctic psychrophilc yeast Rhodotorula sp. NJ298 were investigated at -3 ℃, 0 ℃ and 8 ℃. The results showed that plasma membrane protein content was greater at -3 ℃ than that at 8 ℃, and a unique membrane polypeptide composition with an apparent molecular mass of 94.7 kDa was newly synthesized with SDS-PAGE analysis; GC analysis showed that the main changes of fatty acids were the percentage of unsaturated fatty acids (C18∶ 1 and C18∶ 2) and shorter chain saturated fatty acid (C10∶ 0) increased along with the decrease of the culture temperature from 8 ℃ to -3 ℃; HPLC analysis indicated that astaxanthin was the major functional carotenoids of the plasma membrane, percentage of which increased from 54.6±1.5% at 8 ℃ to 81.9±2.1% at -3 ℃. However the fluidity of plasma membrane which was determined by measuring fluorescence anisotropy was similar at -3 ℃, 0 ℃ and 8 ℃. Hence these changes in plasma membrane's characteristics were involved in the cellular cold-adaptation by which NJ298 could maintain normal plasma membrane fluidity at near-freezing temperature. 相似文献