基于特定领域的Web文本信息获取系统的研究

从特定领域用户获取Web文本信息的实际应用角度出发,在分析了系统相关开发理论基础上,通过从内容和语义上指导Web信息的搜索,尝试设计了一个基于特定领域的Web文本信息获取系统模型,并从实现技术上提出了开发这个系统的体系结构,分析了各组成模块的主要特点及其功能。着重研究了该系统的几项关键技术:Robot技术、Web页面内容的分析和站点结构的分析技术、中文文本的分类问题,包括中文的分词、特征提取、特征匹配及权值计算等的综合应用技术。     

基于Web Services 的国土资源信息服务系统的架构研究

分析了Web Services技术的体系结构、技术特点及其在国土资源信息服务系统建设中的作用.对国土资源信息服务系统的体系框架和数据库框架进行了总体设计,并对系统实现的功能进行了详细设计,提出了一种基于Web Services的国土资源信息服务系统的架构方案.该方案能够实现国土资源数据信息的高效共享和互操作,解决了"信息孤岛"问题.同时,为国土资源信息服务系统的开发建设提供了方向.     

一种基于XML/Web Services的分布式数据库同步技术的研究与实现

随着Internet的迅速发展,物理上分布在各地的企业内部应用系统之间的数据库共享和数据的同步越来越重要,结合XML和Web Services技术的各自优点和特点,提出了利用XML和Web Services实现数据库同步的策略,使用Web Services技术为数据库的同步提供了信息传输和互操作平台.     

嵌入式实时Web服务器

随着Web技术的发展,嵌入式Web服务器技术在工业远程监控和生产过程控制系统中得到了广泛的应用.由于工业嵌入式系统是实时系统的特点,要求嵌入式Web服务器也具备实时性的.本文就是针对这种情况,提出了嵌入式实时Web服务器,并对它的体系结构进行了探讨性的分析和说明.     

设计模式和数据持久层框架在Web系统中的应用

根据远程信息服务系统平台的特点,分析了系统架构和数据持久性处理在Web应用系统中存在的不足之处,提出了综合应用MVC系统架构和数据持久层框架的Web系统解决方案,解决了应用面向对象方法在远程信息服务系统中的架构设计和对关系型数据库进行对象关系映射的实现问题.     

浅析Web的发展对图书馆信息资源建设的影响

Web技术的发展和应用促进了图书馆的信息资源建设向着广度和深度方向发展。概述了Web1.0和Web2.0及其在图书馆信息资源建设中的应用特点,阐述了Web3.0的理念和技术特性,分析了Web3.0给图书馆信息资源建设带来的影响。     

基于图形的突发事件应急指挥辅助决策系统的设计策略

针对卫生应急管理的特点,将地理信息系统技术(GIS)与决策支持系统结合起来,设计了突发公共卫生事件应急指挥辅助决策系统.阐述了其设计原理,讨论和分析了基于GIS技术的突发事件应急指挥辅助决策系统的组成模式,给出了其总体的设计框架.     

基于Web services的Agent防汛决策支持系统研究

利用分布式技术Web services和人工智能技术Agent,建立了具有新型体系结构的防汛决策支持系统.在新系统中,各个独立的决策资源被看作是一种分布在Internet上的Web服务,利用Web services技术和Agent技术,将这些服务抽象构成系统客户端和服务器的界面Agent、信息Agent、协作Agent和业务Agent等.新系统摒弃了传统决策支持系统以库为中心的结构模式,优化了系统的决策支持性能,体现了防洪决策的智能性、分布性和群决策的特点.利用新结构建立的桑园防汛决策支持系统的应用表明,新结构的防汛决策支持系统更具有智能性,更易于使用、管理和维护.     

Web3.0技术发展对网络学习的启示

Web3.0时代的互联网技术综合了Web1.0与Web2.0的技术特点,并且采用智能整合的方式,为用户提供了一种方便管理资料和有效查找信息的全新服务模式.开启了一种全新、高效、鲜活而且具有个性化的网络新时代.本文主要介绍了Web3.0技术发展的新特点,从互联网新技术应用的角度,详细阐述和分析了基于Web3.0技术的学习方式变革的趋势与动向.     

基于Web技术的多级智能监测及诊断体系结构术

针对制造设备及系统的监测与故障诊断技术日趋智能化、开放和网络化的特点,提出了一个面向制造系统的基于Web服务/SOAP和对象Web的多级多主体监测及诊断体系结构,并提出了其中的Web使能机器诊断主体(eMDA)、Web使能过程诊断主体(ePDA)和信号分析诊断主体(SDA)的模块结构.所提出的网络化多级监测及诊断体系结构具有模块化、可重用和可裁减的特点,能满足Internet和Intranet环境下实时和信息集成的要求,并允许分步骤构建柔性的远程监测及故障诊断系统.     

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.     

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     

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