基于ASP.NET的在线考试系统的设计与实现

采用.NET框架技术和数据库技术开发了基于B/S三层架构的在线考试系统,介绍了系统原理、系统功能设计和数据库配置。该系统具有用户登录、系统管理、在线考试3大功能模块,实现了用户管理、考试管理、成绩核算及查询等功能,提高了课程教学质量,改进了学生考核手段,实现了由传统考试方式向网络无纸化考试方式的转变。     

基于J2EE的在线考试系统的设计与实现

随着信息技术的发展,传统的笔试正在向基于网络平台的在线考试逐步转化.提出了基于J2EE平台的在线考试系统的系统框架.该系统不仅可以实现客观题的自动阅卷,还可以实现程序题的自动阅卷,大大节省了教师阅卷的时间,还提高了学生调试程序的能力.     

基于J2EE在线考试信息系统的架构

本文介绍了一个基于J2EE平台的在线考试信息系统,系统采用了J2EE的相关技术并使用了基于MVC模式的Struts框架,后台数据库采用MySQL。系统全部采用网页形式运行,实现了学生在线模拟考试以及学生信息管理等功能。这一系统采用多层体系结构,具有编写简化、可移植性好等特点。     

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.     

在线考试系统的设计与实现

提出在线考试系统的总体结构和功能模块设计方案,通过系统结构设计、表的设计及前端开发,构建一个基于B/S多层结构的、以ASP和SQL后台数据库为基础的在线考试系统,该系统具备学生管理、教师管理、试题库管理、智能组卷、在线考试、计算机自动阅卷、试卷分析等功能.     

基于Java在线考试系统的功能设计

文章主要讲述了一个基于Web的在线考试系统的设计与实现过程.系统开发使用Java语言,采用了J2EE架构中的多层模型,JSP规范和Servlet规范、面向对象的分析和设计方法.文章就Java在线考试管理子系统:试题管理、考生管理、在线制作试卷、控制学生考试的设置、试卷审批等功能进行了详细叙述.     

通用在线考试系统的开发

介绍了一种基于.NET的通用在线考试系统,采用三层B/S体系结构,融合了ASP.NET、C#和SQL SERVER 2000技术来实现,分析了考试系统的几个关键技术,并充分考虑了系统的安全性设计。     

基于WebServtce技术的在线考试平台设计与实现

Internet应用已经比较广泛并且还在逐步的普及,实现在线考试和交流巳成为可能。通过在线考查学员的知识水平,细致了解和记录学员的技术状态、学习状况、考试情况。系统采用学校合作企业开发的SSH快速开发框架VS—Framework,使得系统具有良好的可维护性、可扩展性和高可用性。针对目前高校存在着校区多、学生数量多的特点,文章阐述了WebService的结构和特色,本文重点研究分析了基于WebService技术的在线考试平台的设计与实现。     

基于ASP.NET的在线考试系统的设计与实现

本文介绍了基于ASP.NET环境的在线考试系统的设计与实现,系统采用B/S模式三层体系结构,以SQL Server2005作为数据库。文中阐述了用户登录、在线考试、系统管理三大功能以及实现方法,并给出了某些功能模块的关键代码。     

在.net框架下基于IRT理论的CAT考试系统的设计

本文介绍了项目反应理论(IRT)的基本理论,将IRT理论应用于计算机自适应考试中,主要设计和实现了基于IRT的计算机自适应考试系统中的普通考试,IRT考试和改进的IRT考试。该系统在VisualStudio.net2005的环境下,以ASP.NET为平台C#为编程语言结合ADO.NET和SQL Server,以三参数Logistic模型为项目反应模型,设计开发。最后本文介绍了自适应考试的流程,给出基于B/S结构的自适应考试系统的框架,有利于该系统日后集成到教务管理系统。     

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.     

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.     

橡胶颗粒沥青混合料低温抗裂性试验研究

以AC-13级配为基础,将橡胶颗粒代替部分集料掺入混合料中,以低温弯曲试验为评价方法对不同橡胶颗粒掺量下沥青混合料的低温抗裂性进行研究,并引入应变能密度值对混合料的低温抗裂性进行综合评价.试验结果表明:橡胶颗粒沥青混合料试件的破坏微应变均超过2 300,满足冬寒区的技术指标;无论是否掺加橡胶颗粒,随着温度的下降,沥青混合料破坏时的最大弯拉强度增大,弯拉应变降低,劲度模量增大;弯曲应变能密度在胶粒掺量为1%左右时具有较大的弯曲应变能密度值,此时橡胶颗粒沥青混合料具有较好的低温抗裂性.     

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-