基于C/S模式的网络考试系统

叙述了网络考试系统的设计及系统应实现的功能,阐述了采用VB.NET 2003、Access2002等开发工具在设计过程中所遇到并解决的关键问题。该考试系统具有进行在线考试的主要功能,实现了真正的无纸化考试,满足任何授权的考生随时考试并迅速获得成绩,并能给出其详细的成绩分析与试卷评估,同时也大大减轻了教师出题、组卷和改卷等繁重的工作量。     

基于互联网的网络考试系统的设计与实现

在网络技术发展迅速的今天，传统的考试方式已经面临着淘汰，网络考试成为了一个重要的发展方向。随着计算机技术的普及而开始的新兴事务。网络考试必须具有自动出卷，题库管理，自动评分，手动评分，成绩管理等功能。本文介绍了基于互联网的网络考试系统的设计与实现，最后对未来的考试方式做了展望。     

基于Client/Server体系的考试系统设计与实现

为适应考试自动化管理的需要,探讨了一个基于Client/Server体系的考试系统的设计与实现。该考试系统使任何注册的考生在规定的时间内,在线考试并迅速得到成绩,极大地提高了考试效率,减轻了教师出题、组卷、评卷的繁重工作负担,是实现标准化考试的有益尝试。     

基于Client/Server体系的考试系统设计与实现

为适应考试自动化管理的需要,探讨了一个基于Client/Server体系的考试系统的设计与实现.该考试系统使任何注册的考生在规定的时间内,在线考试并迅速得到成绩,极大地提高了考试效率,减轻了教师出题、组卷、评卷的繁重工作负担,是实现标准化考试的有益尝试.     

用Visual Basic实现计算机考试系统

介绍了基于Visual Basic SQL Server网络化考试系统的设计与实现，从数据库设计、操作过程等方面讨论了所遇到的并解决的关键问题：登录功能的实现，初始化功能的实现，答题功能及评分功能的实现等，实现了试题的任意编辑、自动组卷、智能阅卷、成绩统计分析等功能。从而最大程度地增加了系统的严密性。它是一个较完善的且具有较好通用性的计算机考试系统。     

基于Web考试系统的研究与实现

论述了JSP＆JavaBean开发模型和网络三层数据库原理。分析了在线考试系统实现的关键细节，并提出相应的解决方案，实现了用户认证、实时监控、随机组卷、在线答题、评分、成绩存储、成绩查询和题库管理等功能．     

网上组卷考试系统设计

讨论一个网上组卷考试系统,采用了动态网页、交互数据对象、ACCESS 数据库、结构化查询语言以及动态访问数据库等技术。该系统实现了多种组卷功能,特别是实时动态智能化组卷的方法。同时还具有用户登录、试题库管理、考试结果网上提交、自动批阅试卷和成绩统计分析等功能。该系统对远程教育和考试模式的改革以及提高考试的客观性、公正性、科学性具有一定帮助。     

化学实验无纸化网上考试系统设计与应用

针对目前化学实验类课程成绩评定方面存在的不足,为了实现化学实验成绩客观、公平的评定,运用".NET"技术作为开发平台,采用B/S运行模式设计的三层立体架构,开发了化学实验考试系统,有效避免了组卷时重复抽题的现象,实现了个性化和随机组卷,并具备强大的试卷成绩分析功能.该系统也可应用于其他实验科目的考试之中.     

基于MVC+AJAX模式的在线考试系统设计与实现

为提高考试管理工作的效率,降低教师出卷和阅卷负担,确保学生成绩的公平与公正,设计研发了客观题在线考试系统.该系统采用B/S架构设计,应用MVC+AJAX开发模式,基于Java Web技术和Struts2.1框架开发,实现了客观题的在线考试功能.如随机抽题、自动阅卷、成绩反馈等.该系统具有较强的稳定性和较快的响应速度,具有可拓展性便于后期维护.     

在线考试系统中组卷功能的实现

在线考试系统的设计与实现中,组卷功能的实现是该系统需要解决的关键问题之一.论述如何应用科学的组卷策略和转换算法实现考试系统的自动组卷,从而使系统具有较高的效率、实用性和智能性.     

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