上海基础平台遥感数据在旧区改造信息系统中的应用

遥感数据作为一种信息量非常丰富的数据类型,在许多GIS系统中却没有发挥应有的作用,这是目前上海城市管理GIS系统应用面临的一个问题。本文以上海旧区改造信息管理系统构建与应用为例,通过介绍遥感数据在该系统中的应用方式,阐述了基础平台遥感数据如何发挥其应有的作用,成为旧区改造宏观管理中不可缺少的信息源。     

基于网格的高性能地理信息系统初探

网格技术不仅可以解决由于WebGIS缺少"集成"和"互操作"所造成异构GIS应用之间的数据共享与互操作问题;而且可以结合高性能计算手段解决GIS扩展应用中的高密集的计算问题。Grid GIS不仅能为应用提供丰富的各类GIS资源,而且为解决分布异构环境下的GIS共享以及互操作提供了可行的解决方案。然而如何利用Grid技术为那些异构GIS应用提供高性能计算服务,成为一个值得探索的问题。为此,本文初步探讨了基于Grid的高性能GIS的体系结构、整体布局等关键技术,同时对如何构建高性能的GIS服务节点提出了相应的解决办法。     

基于移动GIS的土地执法动态巡查系统建设

目前土地执法巡查工作存在着作业方式落后、信息化程度低、巡查效率低和巡查人员不易监督的问题。针对这些问题,通过分析土地执法巡查的业务需求和移动GIS技术的特点提出构建基于移动GIS的土地执法动态巡查系统,在此基础上完成系统总体架构设计和功能设计,分析系统实现的移动GIS技术、数据库引擎技术、Web Services技术和基于时间维的GIS管理技术,重点阐述移动GIS技术在系统中的应用,最后完成系统开发。系统的使用改善了执法巡查现状,提高了巡查效率。     

基于地理信息系统的雷电业务系统

介绍了地理信息系统（GIS）在四川省雷电业务系统构建中的应用方法。四川省防雷中心在雷电监测新技术和新手段的基础上,将GIS技术与雷电潜势预报和短临预警技术有效的结合起来,构建了雷电业务应用系统。并通过对此系统在2008年“9．23”四川雷电天气过程中的应用分析,说明此系统可以准确地对未来12小时的雷电过程进行预报和未来1小时的雷电过程进行预警。     

基于GIS的电子政务综合应用构建平台建设研究

由于政府部门在办公和决策过程中处理的事件或信息大都与地理空间位置相关,因此,建设以地理空间数据和GIS技术为基础的电子政务系统是必然发展的趋势。本文通过对基于GIS的电子政务系统建设内容、要求及其特点的分析,提出了基于GIS技术的电子政务综合应用构建平台的概念,对平台的总体技术设计与开发问题进行了深入的讨论,并就系统组成与应用框架、地理空间数据共享服务平台、专项应用系统建设等理论技术问题进行了分析和研究。     

基于SOA架构的地理信息公共服务平台建设研究

本文以我省地理信息公共服务平台建设为基础,分析我省地理信息现状及建立地理信息公共服务平台的重要性,介绍了如何利用基于Web服务的GIS技术和OGC的接口规范逐步建立基于SOA＂面向服务架构＂的应用服务与集成体系。对我省地理信息公共服务平台建设具有一定的指导意义。     

3维地理信息Web服务集成研究

随着空间信息技术和网络技术的发展,地理信息系统(GIS)也在不断地从2维世界走向3维世界,从GIS应用走向GIS服务。在此基础上,本文提出了3DGIS Web服务,并设计了基于SOA的3DGIS Web服务多层体系结构、3DGIS Web服务的数据源和API框架,论述了3DGIS Web服务和现有的2维GIS Web服务集成需要解决的关键技术问题。     

城市三维地质数据管理与服务系统框架研究

城市地质数据的数字化管理与服务是“数字城市“工程的重要内容,3D GIS将在未来的城市数字化建设中扮演核心角色.介绍了3D GIS的发展现状及应用前景,详细讨论了基于3D GIS构建的城市地质数据管理与服务系统的设计思路和结构功能.三维数据结构的研究是3D GIS的核心问题并成为当前制约3D GIS深入发展与应用的瓶颈,由于缺乏对三维地质数据进行有效管理与可视化表达的三维数据模型,当前GIS的三维地质建模能力与三维空间分析能力都极为薄弱.在分析城市三维地质数据多种建模方法的基础上,采用一种基于TIN和TEN的混合数据结构来构建城市地质数据建模系统.针对城市三维地质数据的特点,探讨了城市三维地质海量数据的采集与管理、城市三维地质数据信息的Web发布等重要问题,力求为系统功能的最终实现提供完整的解决方案.     

面向服务的国土资源空间数据集成与共享

国土资源海量空间数据的集成与共享一直是国土资源信息化建设中的重要难点问题之一。SOA技术的发展及其在GIS中的应用,为地理空间数据的集成与共享提供了新的技术手段,本文从国土资源空间数据集成与共享的应用需求出发,对基于SOA的国土资源空间数据集成与共享的分层结构进行了分析,同时,对国土资源空间数据的多级集成及共享进行了探讨。     

基于BIM和GIS的综合管廊智能化管理平台研究与实现

以连云港徐圩新区综合管廊智能化管理平台建设为例,采用SOA架构,综合运用BIM(建筑信息模型)、GIS、智能化控制与城市市政设施的运营管理服务等技术手段,设计并实现包含BIM建模、监控预警、综合业务以及应急指挥响应等专题应用系统的综合管廊智能化管理平台。最后对BIM和GIS技术在管廊智能化管理中的应用做了总结和展望。     

Preliminary study on plasma membrane fluidity of Psychrophilic Yeast Rhodotorula sp.NJ298 in low temperature

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.     

Information for authors

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 comprehensive academic journal dedicated to presentation of multi-disciplinary achievements in Arctic and Antarctic expeditions and research.Its primary purpose     

JOURNAL OF OCEAN UNIVERSITY OF CHINA

<正>Copyright Submfnion of a roanusatpt inks:that the work described has not been published before(exoept In the form of an abstrW or as part of a published lecture,review,or thesis);that it is not under consideration for publication elsewhere that its publication has been approved by ail     

Information for Authors

<正>The Journal of Ocean University of China(Oceanic and Coastal Sea Research)is a comprehensive academic quarterly sponsored by the Ocean University of China,published one volume per year.This journal is devoted to the publication of the theoretical and applied research results on oceanography and marine fisheries.The fieldcovered include the physical,chemical,biological,geo-     

Hydraulics and Hydrology in Mountain Areas

<正>The 35th IAHR World Congress was held in Chengdu,China from September 8 to September 132013.The title of the conference was:"The Wise Finds Pleasure in Water:Meandering through Water Science and Engineering".During the congress,1239 papers were presented in 139sessions for oral presentations and 7 sessions for poster presentations.After the Congress,a Committee was appointed to select some of the best papers presented at the Congress for publication,after a     

Sea ice thickness measurement in spring season in Bothnian Bay using an electromagnetic induction instrument

As an important component of the cryosphere,sea ice is very sensitive to the climate change.The study of the sea ice physics needs accurate sea ice thickness.This paper presents an electromagnetic-induction(EM) technique which can be used to measure the sea ice thickness distribution efficiently,and the successful application in Bothnian Bay.Based on the electromagnetic field theory and the electrical properties of sea ice and seawater,EM technique can detect the distance between the instrument and the ice/water interface accurately,than the sea ice thickness is obtained.Contrastive analysis of the apparent conductivity data obtained by EM and the value of drill-hole at same positions allows a construction of a transformable formula of the apparent conductivity to sea ice thickness.The verification of the sea ice thickness calculated by this formula indicates that EM technique is able to get reliable sea ice thickness with average relative error of only 12%.The statistic of all ice thickness profiles shows that the level ice distribution in Bothnian Bay was 0.4-0.6 m.     

Thermohaline structure inhomogeneity associated with polynia at the northern margin of Emery Ice-shelf

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.     

Phylogenetic analysis of cultivable bacteria isolated from Arctic sea-ice

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.     

Foreword

正Rapid changes of Arctic sea ice cover have been in the focus of the international climate research community in recent years.Quite a few of nations have completed a large number of related surveys and research projects in the Arctic Ocean.Up to now,China has performed six research cruises to the Arctic Ocean resulting in a significant volume of research output.Improved knowledge on the atmospheree-sea ice-ocean interactions in the Arctic is a