基于MAPGIS的地下管线信息系统设计

借助现代计算机和日益成熟的地理信息系统（ＧＩＳ）技术建立地下管线信息系统,以动态管理地下管线信息数据,是地下管线现代化管理的必然途径．结合地下管线的特点提出了地下管线信息系统设计的一般准则和要点,介绍了基于ＭＡＰＧＩＳ基础平台二次开发的地下管线信息系统ＭＡＰ／ＰＩＰＥ的结构及系统的应用情况．     

基于WebGIS地下管线探测与信息化建设方案

分析厦门市地下管线建设现状,规划厦门市地下管线信息化建设总体目标、方案、技术路线、实施保障体系,运用WebGIS技术构建具权威性、现势性强地下管线数据及公共信息交换服务平台,实现网络化信息共享,为城市可持续发展提供多元化服务。     

基于WebGIS的旅游地理信息系统的设计与实现——以徐州市为例

建立基于WebGIS技术的旅游地理信息系统,对旅游事业的发展及人们外出旅游具有十分重要的意义。该系统引入空间决策支持系统(SDSS),把WebGIS和SDSS技术充分结合起来。根据徐州市旅游业发展实际,从方便用户出发,构建了基于WebGIS技术的徐州市旅游地理信息系统。一方面充分利用GIS强大的空间查询和分析功能;另一方面,在基于WebGIS的基础上,利用SDSS,可以根据游客选定的标准以及个人偏好,为游客制定旅游计划提供空间决策支持服务。该系统的建立将对进一步树立徐州市旅游业发展的新形象,促进徐州旅游业的信息化发展具有重要的意义。     

“OneGeology计划”及其在中国研究新进展

"OneGeology计划"中文名为"同一个地质计划"、"地质一体化计划"或者"世界大地质计划",其目的是建立一个包含多个国际组织和国家的地质调查机构参与的全球数字地质图共享系统。该计划应用J2EE和WebGIS技术,以网络为平台提供各种比例尺的地质图,参与该项目的国家通过发布基于开放地理信息系统协会(OGC)标准的网络服务并将访问接口注册到OneGeology门户网站实现地质图空间数据的共享。本文以中国新建成的1∶100万国际分幅地质图空间数据库为基础,应用"OneGeology计划"的有关标准和要求,进行数字地质图共享试点研究,为建立中国小比例尺数字地质图共享系统"OneGeology-China"奠定基础。     

地下通信管线动态信息管理系统的研制与应用

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．     

基于MapXtreme的校园WebGIS系统实现

万维网地理信息系统(WebGIS)是利用互联网(Internet)来扩展和完善地理信息系统功能的一项新技术，是由地理信息系统和互联网技术相结合而产生的一种新方法。目前，用于开发WebGIS的方法有许多种，文章研究基于MapXtreme的WebGIS实现方法，把MapXtreme与JavaScript及ASP相结合开发WebGIS系统，并将其应用于校园信息查询中。实现基于MapXtreme的校园WebGIS系统。     

基于MapObjects的C/S管线信息系统的设计与实现

基于面向对象的地理信息系统技术，针对客户机／服务器(C／S)模式设计了一个包含数据库、应用服务器和客户端三个部分的管网管线地理信息系统。该系统由测量调查、图形编辑、数据统计、信息查询、空间分析、规划、资料输出、权限管理、系统维护九大功能模块组成；并具有用户界面友好，稳定实用，安全可靠，可扩充性强等特点。并在数据存储方式、图形数据与属性数据的连接、编辑功能设计、系统兼容性、符号库建立等关键技术的实现方面有新的突破。该系统除具有一般管理系统的基本功能外，还具有地理信息系统所特有的空间数据查询和分析功能；该系统还充分发挥了网络的优势,为CIS信息社会化共享提供了一个切实可行的解决方案。     

WebGIS研究及其在城市环境中的应用

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.     

基于聚类调度负载均衡的WebGIS模型

为了提高网络地理信息系统(geographic information system, GIS)并发访问性能,研究了现有WebGIS负载均衡技术的缺陷,分析了在大用户量并发访问情况下利用协作任务聚类技术解决WebGIS负载均衡的必要性和可行性,提出了基于聚类调度负载均衡的WebGIS模型,重点研究了聚类调度负载均衡算法,最后建立试验床,通过一系列的试验结果验证了本模型良好的并发性.      

基于WebGIS 的地下水环境监测信息发布系统研究

基于WebGIS的地下水环境监测信息发布系统涉及了网络技术、地理信息系统技术、数据库技术、软件工程等。本文简要介绍了WebGIS的关键技术，并从数据库、WebGIS综合管理服务、Web服务器和Web浏览器4个方面阐述了构成地下水环境监测信息发布系统的技术框架。根据系统的设计方案进行了相应的开发和配置，并以山东省地下水环境监测数据为例，实现了基于WebGIS的地下水环境监测信息发布。     

The terrestrial fauna of the Late Triassic Pant-y-ffynnon Quarry fissures,South Wales,UK and a new species of Clevosaurus (Lepidosauria: Rhynchocephalia)

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.     

The effect of water on accessory phase solubility in subaluminous and peralkaline granitic melts

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.     

Quaternary stresses revealed by calcite twinning inversion: insights from observations in the Savonnières underground quarry (eastern France)

Calcite samples were extracted both from the rock matrix and the superficial coating of a karstified fault plane of an underground quarry, located in the eastern border of the Paris basin. The karstification is dated as Quaternary. Analysis of mechanical calcite twinning reveals that only the calcite matrix has also undergone a compression trending WNW that can be attributed to the Mio-Pliocene alpine collision. Both coating and matrix have undergone a strike-slip regime with σ₁ roughly trending north–south, that could correspond to the regional present-day state of stress, a strike-slip compression rather trending NNW, modified by local phenomena. To cite this article: M. Rocher et al., C. R. Geoscience 335 (2003).     

HYDROGEOLOGY

正20141756 Chen Ruige(Mathematical College,China University of Geosciences,Beijing100083,China);Zhou Xun Numerical Simulation of Groundwater Level Fluctuation in a Coastal Confined Aquifer with Sloping Initial Groundwater Level Induced by the Tide(Geological Bulletin of China,ISSN1671-2552,CN11-4648/P,32(7),2013,p.1099-1104,6 illus.,16 refs.) Key words:confined water,groundwater level     

METAMORPHIC PETROLOGY

正20141408 Cai Jia(Institute of Geology,Chinese Academy of Geological Sciences,Beijing100037,China);Liu Fulai Petrogenesis and Metamorphic P-T Conditions of Garnet-Spinel-Biotitebearing Paragneiss in Danangou Area,Daqingshan-Wulashan Metamorphic Complex Belt(Acta Petrologica Sinica,ISSN1000-0569,CN11-1922/P,29(7),     

SERIALS

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GEOPHYSICAL EXPLORATION

正20142386An Guoying(China Aero Geophysical Survey and Remote Sensing Center for Land and Resources,Beijing 100083,China)Application of Satellite Remote Sensing in Regional Hydrogeological Investigation:Taking Cenozoic Strata in Wenquan Sheet(1∶250 000)of Karakoram Range as an Example(Geosci-     

QUATERNARY GEOLOGY & GEOMORPHOLOGY

正20141016An Chengbang(Key Laboratory of Western China’s Environmental Systems,Ministry of Education,Lanzhou University,Lanzhou 730000,China);Zhao Yongtao Lake Records during the Last Glacial Maximum from Xinjiang,NW China and Their Climatic Impli-     

PETROLEUM GEOLOGY

正20141538 Cao Qing(School of Earth Sciences and Engineering,Xi’an Petroleum University,Xi’an 710065,China);Zhao Jingzhou Characteristics and Significance of Fluid Inclusions from Majiagou Formation,Yichuan Huangling Area,Ordos Basin(Advances in Earth Science,ISSN1001-8166,CN62-1091/P,28(7),2013,p.819-828,7 illus.,3 tables,43 refs.)     

GEOCHEMISTRY

正20142002 Wei Hualing(Institute of Geophysical and Geochemical Exploration,Chinese Academy of Geological Sciences,Langfang065000,China);Zhou Guohua Element Content and Mineral Compositions in Different Sizes of Soil in Tongling Area,Anhui Province(Geological Bulletin of China,ISSN1671-2552,CN11-4648/P,32(11),2013,p.1861