采用RIA技术构建的应急GIS系统

GIS是应急管理软件中一个重要的支撑平台,并渗透到应急管理的全过程。分析了传统GIS领域存在的主要问题,探讨了RIA(富互联网应用)技术和主流RIA技术Flex。提出了基于RIA技术构建应急GIS系统的思路。在此基础上开发了基于Flex的应急GIS原型系统。系统运行结果证明,基于RIA技术的应急GIS系统具有功能强大的前端处理能力、高度的互操作性,提高了空间数据的分析与处理性能、改善了用户体验。     

RIA及其基于Flex的应用开发模型

介绍了RIA的产生、发展及优点,阐述了基于Macromedia Flash/Flex开发RIA应用的框架与方法,对RIA的应用前景作了展望。     

基于Flex的校园视频教学资源共享网站的设计

本文讨论基于Flex的RIA方法实现校园视频教学资源共享网站。重点讨论了Flex的架构设计及数据通信服务。作为一个实例应用,进行了较为完整的系统架构设计和功能定义,并详细介绍了其总体规划、界面设计、视频格式的转换等各个部分实现的基本流程。     

基于Flex的打印优化设计

为了实现理想的Web打印效果,介绍了在Flex编程环境下使用FlexPrintJob类和PrintDataGrid类对文档打印的方法,并在此基础上通过代码集中于组件方式实现了打印优化,同时给出了详细的软件设计代码,对于基于Flex的富因特网应用程序开发(RIA)而言,此方法高效、简便、灵活.     

Flex网络通信技术

使用Flex技术开发RIA应用程序时,必须与服务器进行通信,或者从外部XML文件或文本文件加载数据,因此首先要解决的是网络通信问题。本文全面介绍了Flex提供的多种通信方式,详细分析了每种方式的使用方法及适用情况。     

基于Flex虚拟学习RIA平台的构建

基于HTML的网络学习系统已经满足不了用户更高的、全方位的体验要求,RIA技术在虚拟学习平台中的应用,将构建一个具有良好用户体验的学习环境,良好的体验能显著提升学习者的学习效率.在互联网应用系统及Flex技术研究的基础上,将C/S体系结构较好的用户体验与B/S体系结构的灵活性结合起来,提出了基于Flex的虚拟学习RIA平台的系统架构,详细地分析了实现虚拟学习平台的关键技术.     

基于FLEX的RIA Web开发框架的特点与性能分析

随着互联网技术的复杂性越来越高,传统Web架构已不能全面满足用户不断增长的体验需求,本文结合RIA WEB开发技术的发展现状,深入分析了基于Flex＋Spring＋Hibernate的多层框架结构的特点及性能。     

基于Flex的交管业务统计监管系统实现

企业信息化的开发架构逐渐从c/s架构转向e/s架构,一种被称为富互联网应用程序（Rich Internet Application,简称RIA）的具有高度互动性和丰富用户体验的网络应用模式应运而生。Flex作为富互联网应用架构最完善的解决方案技术,在国内开始受到广泛的关注。本文就使用Flex技术开发交通管理业务的统计监管系统进行了探讨和实践。     

基于FLV流媒体技术的视频会议系统设计

为了探讨新的计算机技术在教学中的应用,提高教学质量,采用开源的Red5流媒体服务器,结合Flex RIA(Rich Internet Applications）技术,Spring2框架和Cairngorm微架构技术工具,设计了J2EE（Java 2 Platform Enterprise Edition）架构下的基于FLV（Flash Viedo）流媒体技术的视频会议系统,并在应用中取得了较好的效果。     

基于RIA的在线多媒体课件系统的设计和研究

本文通过在线多媒体课件系统与传统多媒体课件的对比,阐述了在线多媒体课件系统的全新思想和优势,该系统为课件的快速开发和资源共享提出了一种实用的解决方案。作者根据现有的网络开发技术水平,采用了基于Flex的RIA技术实现在线多媒体课件系统的开发,并着重阐述了系统的设计思想与基本的实现方法。     

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.     

An Analysis of Catherine＇s Character——Wuthering Heights

Wuthering Heights, Emily Bronte＇s only novel, was published in December of 1847 under the pseudonym Ellis Bell. The book did not gain immediate success, but it is now thought one of the finest novels in the English language. Catherine is the key character of this masterpiece, because everybody and everything center on her though she had a short life. We can understand this masterpiece better if we know Catherine well.     

Lower Paleozoic oil relationships within Williston Basin, Canada

The Williston Basin is a significant petroleum province, containing oil production zones that include the Middle Cambrian to Lower Ordovician, Upper Ordovician, Middle Devonian, Upper Devonian and Mississippian and within the Jurassic and Cretaceous. The oils of the Williston Basin exhibit a wide range of geochemical characteristics defined as "oil families", although the geochemical signature of the Cambrian Deadwood Formation and Lower Ordovician Winnipeg reservoired oils does not match any "oil family". Despite their close stratigraphic proximity, it is evident that the oils of the Lower Palaeozoic within the Williston Basin are distinct. This suggests the presence of a new "oil family" within the Williston Basin. Diagnostic geochemical signatures occur in the gasoline range chromatograms, within saturate fraction gas chromatograms and biomarker fingerprints. However, some of the established criteria and cross-plots that are currently used to segregate oils into distinct genetic families within the basin do not always meet with success, particularly when applied to the Lower Palaeozoic oils of the Deadwood and Winnipeg Formation.     

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.     

Design and analysis of generic LBS application developing platform

Location based services is promising due to its novel working style and contents.A software platform is proposed to provide application programs of typical location based services and support new applications developing efficiently. The analysis shows that this scheme is easy implemented, low cost and adapt to all kinds of mobile nework system.     

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