GML—地理标记语言特征与分析

针对GIS行业中的数据交换与共享的困难，在讨论了XML（Extensible Markup Language）这一Web新行业标准的出现给GIS带来了希望的基础上，进一步详细地论述和分析了GML（Geography Markup Language）的特征，讨论了GML已逐渐成为大家所接受并容易理解的一种空间信息的交换格式。     

基于Web Service和GML的WebGIS的研究

本文首先指出了传统Web GIS存在的问题,然后介绍了Web Service和GML相关技术,接着提出了GIS互操作的一种应用模式———基于OPEN GIS框架模式,最后总结了Web Service和GML技术对WebGIS系统的作用和意义。     

基于GML的GIS空间要素描述与应用研究

以房屋土地地理信息系统 (GIS)中的地籍图形数据为例 ,探讨了基于地理标识语言 (GML)规范的空间要素描述 ,包括其数据描述结构和GML文档 ,并基于JAVA语言、文档对象模型和XML语言接口协议 (SAX)实现了一个基于GML的地籍GIS查询系统 ,验证了提出的基于GML规范的GIS空间数据描述的可行性     

基于Oracle spatial和GML的地理信息集成与发布研究

在oracle Spatial基础上，通过Oracle Java API扩展，实现了多源数据集成．并可从中提取GML文档，自动生成相应的GML应用模式，实现简单地理信息数据的集成和发布．     

WebGIS应用中ShapeFile文件到GML文档的转换

针对WebGIS应用中异构空间数据的共享问题,研究了ShapeFile文件格式和GML关于空间数据的组织方法,提出了ShapeFile文件转换为GML文档的思路,借助Vis-ual Studio.NET平台,设计了二者的转换方法,经实践验证,可快速、有效地实现二者的转换,对基于GML的多源异构空间数据集成系统的开发有较好的借鉴价值。     

基于GML和SVG的空间数据可视化接口设计

针对如何实现网络环境中GML数据的客户端显示,编写了GML文档到SVG文档的通用转换样式表,并借助Visual Studio.NET平台,设计了空间数据可视化接口,经实践验证,该接口可快速、有效地实现空间信息的可视化,对于基于GML的多源异构空间数据集成系统的开发有较好的借鉴价值.     

基于Oracle和GML的WebGIS教育仿真系统设计

WebGIS是当前GIS技术研究的一个热点。本文结合中国远程教育WebGIS仿真系统的课题,提出了采用Oracle Spatial作为空间数据库,GML作为传输数据格式开发WebGIS远程教育仿真系统的技术特点和设计关键内容。讨论了Oracle Spatial中空间数据的访问方法、GML与Java数据绑定,GML格式数据的解析等关键技术。提出了实现一个教育WebGIS系统的开发的设计思想。     

GML应用建模方法的新思路

GML语言是开放地理信息系统联合会制定的基于XML的空间数据编码规范,对于GIS互操作的研究有重要的参考价值．本文首先介绍了GML语言的特点及应用,然后探讨了从建立UML模型开始,自动生成GML模式的一种可能的建模方法．     

XML在GIS中的应用

从介绍GIS发展状况出发,阐述了WebGIS是当今GIS发展的热点之一,利用可扩展标记语言(简称XML)在实现信息标准化、信息统一、信息的交流与共享上有其独特的优势。论述了将XML与WebGIS相结合会推动GIS的飞速发展。最后简要介绍了基于XML的地理标记语言(简称GML)。     

XML在GIS中的应用

从介绍GIS发展状况出发，阐述了WebGIS是当今GIS发展的热点之一，利用可扩展标记语言（简称XML）在实现信息标准化、信息统一、信息的交流与共享上有其独特的优势。论述了将XML与WebGIS相结合会推动GIS的飞速发展。最后简要介绍了基于XML的地理标记语言（简称XML）。     

Markedness and its Interpretation in Language Use

Language markedness is a common phenomenon in languages, and is reflected from hearing, vision and sense, i.e. the variation in the three aspects such as phonology, morphology and semantics. This paper focuses on the interpretation of markedness in language use following the three perspectives, i.e. pragmatic interpretation, psychological interpretation and cognitive interpretation, with an aim to define the function of markedness.     

Features of Women's language

Language is a means of verbal communication. People use language to communicate with each other. In the society, no two speakers are exactly alike in the way of speaking. Some differences are due to age, gender, statue and personality. Above all, gender is one of the obvious reasons. The writer of this paper tries to describe the features of women＇s language from these perspectives： pronunciation, intonation, diction, subjects, grammar and discourse. From the discussion of the features of women＇s language, more attention should be paid to language use in social context. What＇s more, the linguistic phenomena in a speaking community can be understood more thoroughly.     

低渗透非均质砂岩油藏启动压力梯度研究

理论推导与室内实验相结合,建立了低渗透非均质砂岩油藏启动压力梯度确定方法。首先借助油藏流场与电场相似的原理,推导了非均质砂岩油藏启动压力梯度计算公式。其次基于稳定流实验方法,建立了非均质砂岩油藏启动压力梯度测试方法。结果表明:低渗透非均质砂岩油藏的启动压力梯度确定遵循两个等效原则。平面非均质油藏的启动压力梯度等于各级渗透率段的启动压力梯度关于长度的加权平均;纵向非均质油藏的启动压力梯度等于各渗透率层的启动压力梯度关于渗透率与渗流面积乘积的加权平均。研究成果可用于有效指导低渗透非均质砂岩油藏的合理井距确定,促进该类油藏的高效开发。     

On Tragic Consciousness In The Works By Ernest Hemingway

As an American modern novelist who were famous in the literary world, Hemingway was not a person who always followed the trend but a sharp observer. At the same time, he was a tragedy maestro, he paid great attention on existence, fate and end-result. The dramatis personae's tragedy of his works was an extreme limit by all means tragedy on the meaning of fearless challenge that failed. The beauty of tragedy was not produced on the destruction of life, but now this kind of value was in the impact activity. They performed for the reader about the tragedy on challenging for the limit and the death.     

Achieving Unusual States of Matter Under High Pressure

正The periodicity of the elements and the non-reactivity of the inner-shell electrons are two related principles of chemistry,rooted in the atomic shell structure.Within compounds,Group I elements,for example,invariably assume the+1 oxidation state,and their chemical properties differ completely from those of the p-block elements.These general rules govern our understanding of chemical structures and reactions.Using first principles calcula-     

Exchange-Correlation and Electronic Excitation Energies from Pairing Matrix Fluctuations

We have developed an adiabatic connection to formulate the ground-state exchange-correlation energy in terms of pairing matrix linear fluctuations.This formulation of the exchange-correlation energy opens a new channel for density functional approximations based on the many-body perturbation theory.We illustrate the potential of such approaches with an approximation based on the particle-particle Random Phase Approximation(pp-RPA).This re-     

Density Functional Theory for the Response of Periodic Systems to Electric Fields Based on the Vector Potential Approach

正The electronic and nuclear(structural/vibrational)response of 1D-3D nanoscale systems to electric fields gives rise to a host of optical,mechanical,spectral,etc.properties that are of high theoretical and applied interest.Due to the computational difficulty of treating such large systems it is convenient to model them as infinite and periodic(at least,in first approximation).The fundamental theoretical/computational problem in doing so is that     

On the Thermodynamic Limit for Responses to Static Electromagnetic Fields

For molecular systems,the quantum-mechanical treatment of their responses to static electromagnetic fields usually employs a scalar-potential treatment of the electric field and a vector-potential treatment of the magnetic field.Although the potential for each field separately is associated with the choice of an(unphysical)origin,the precise choice of the origin for the electrostatic field has little consequences for the results.This is different for the     

Call for Papers

<正>"The Journal of Shanghai Normal University:Mathematics"is published by Shanghai Normal University as regular issues of The Journal of Shanghai Normal University each year from 2014 in English.The editors-in-chief of the issues are professors Yuhao Cong and Maoan Han.The Journal of Shanghai Normal University was started in 1958 with     

Journal of Donghua University ( English Edition) Contents of Volume 31

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