基于Internet的智能超媒体教学系统

结合超媒体技术在教学系统中的应用和人工智能技术在WWW上的应用，构造出了基于Internet的智能超媒体系统的参考模型，在此基础上讨论了如何提供适合用户的个性化自主学习方案，以达到较好的教学效果；如何提高网络资源和知识资源的利用率，并给出了各个层次的主要技术．     

基于Web的教学超媒体中的自适应导航支持技术

用户利用WWW浏览器进行学习的最大障碍是：用户必须自行应付大量的学习材料和导航链，而有时它们是与学习目标无关的，解决问题的有效方法是自适应超媒体环境的实现，即既保持WWW特有的转称分便性，又能为用户提供导航支持，基于用户的学习历史指导下一步学习内容的选择，本文介绍基于Web的教学超媒体中的ANS技术，给出了构造领域模型和用户模型的技术方法，并着重讨论了一些简单而且有效的ANS技术。     

基于JAVA的3D图形开发技术

Java语言具有结构中立性、网络分布性等优点，它的3D图形API在开发Internet及WWW上的图形网络应用程序时有极大优势，因而得到了迅速地推广和应用．介绍Java3D API的特点，总结了Java3D API的组成，对Java3D数据结构、应用程序的编程要点作了重点评述，对如何利用Java3D API进行应用程序开发作了初步研究．     

JAVA网络通信机制的研究

从使用URL类访问WWW资源和使用套接字（Socker)进行网络通信两方面论述Java的网络通信机制，并给出了应用实例。     

关于用虚拟现实技术进行远程教学的研究

介绍了在WWW上用虚拟现实技术进行远程教学的设计方法，详细描述了描述教室的实现方法，用VRML和Java技术对虚拟现实的交互做了探索。     

采用3层结构模式实现音视频制作系统

Internet的发展影响了每个的生活，WWW应用的开发，从HTML编程，CGI编程、基于数据库的直接WWW编程到件技术以及流寻体技术的应用，都代表了Internet发展的重要阶段，Java技术的发展更是与Internt发展相辅相成，本文介绍了流媒体技术的相关概念，分析了B／S（Browser/Server)结构和三层结构的原理特点，对音频视频课件系统的总体框架和主要实现技术做出了详细的说明。     

Web Robot技术及其Java实现

WWW环球信息呈指数级增长,使WWW成为全球最大的信息系统,研究其中的信息搜索工具具有现实意义．WebRobot是搜索引擎中的核心部分,它从给定的统一资源地址开始分析,递归地搜索新的Web文档．作者论述了WebRobot的工作原理以及机器人排斥标准,用Java实现了Web文档的下载、超链提取、新超链的可用性判断和访问站点的安全性检查,为提高WebRobot的效率提出了2种解决途径,即采用Java多线程处理技术和集群式Robot．此外,给出了用Java多线程处理技术提高效率的算法,对网站建设和信息搜索工具的开发具有一定的参考价值．     

Java环境下REST风格Web服务的开发方法

REST是一种分布式超媒体软件架构风格,基于REST风格Web服务简单并具有很强的伸缩性。本文介绍了Java环境下的开发REST风格Web服务的主要框架,并提供了一个基于Grails开发Web服务的实例。     

WWW 主要实现技术浅析

本文概述了WWW的发展过程,分析了每一发展阶段中存在的的问题,并简单介绍了WWW的工作流程,从各个不同的阶段中出现的几大问题如实现复杂、运行低效等出发,逐一引出了WWW中几大主要实现技术,有CGI、API、Java和JavaScript等,比较分析了这几种技术的优缺点及目前的应用状况.最后从用户的角度出发,从实用性、简单性、安全性等方面预测了这几大技术的未来发展趋势.     

超媒体在物理教学中的应用

本文从超文本和超媒体的一般概念出发，探讨了计算机辅助教学以及超媒体网络这两种超媒体形式在教学中的应用，分析了超媒体的应用前景。     

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