CAI中学习测试问题折解决方法

从教学基本规律和要求出发，提出了ＣＡＩ软件中必须解决的学习测试问题和解决该问题的具体要求。     

一种CAI学习模型及其超文本课件

在讨论了ＣＡＩ学习理论的基础上，给出了一个ＣＡＩ认知学习模型，详细介绍了为实现模型而设计的一种超文本课件的组织。此模型的ＣＡＩ系统可以为教师一个方便的教学设计环境，有助于解决现有ＣＡＩ软件教学设计不足的问题。     

CAI课件的教学设计

以认知学习理论为基础，结合ＣＡＩ的特点，提出了一ＣＡＩ课件的教学设计模型，该模型描述了在ＣＡＩ课件设计中的目标分析，内容分析和课程组织，最后对ＣＡＩ课件教学设计的做了简要介绍。     

智能多媒体CAI开发环境

计算机辅助教育软件的推广和应用上出现了一些困难。本文分析和论述开发和应用ＣＡＩ软件中遇到的问题和原因，指出计算机辅助教育（ＣＡＩ）必须智能化、多媒体化、和认知化，ＣＡＩ的开发和应用迫切需要一个高性能的开发平台。从而提出了一个智能多媒体ＣＡＩ开发环境的体系结构和设计方案，并以作者在此基础上正在设计和开发的智能多媒体ＣＡＩ开发环境Ｈｙｐｅｒ Ｔｒａｉｎ为例作了具体论述。ＨｙｐｅｒＴｒａｉｎ是一个完整的     

《工程制图》多媒体CAI在微机网络上的实现

《工程制图》多媒体ＣＡＩ课件需要制作大量的三维真彩色动画，由于这种动画的数据量很大，因此，制作工程多媒体ＣＡＩ课件在难度上比一般的多媒体ＣＡＩ大，这类课件的研制在我国仍处在初级阶段，目前这类软件都不能在微机网络上运行，从而影响了工程制图ＣＡＩ在课堂上的使用效果，我们采用Ｖｉｓｕａｌ Ｂａｓｉｃ描述性语言 网上实现了资源共享，解决了实验室中几十个终端学生学习工程制图多媒体课件的问题，这将会降低实验室     

电子电路CAI系统的设计与优化

研究并实现了一种电子电路ＣＡＩ（计算机辅助教学）教学系统。给出了该系统的树型结构简图，并通过一个读写存储器功能演示电路和软件程序的实例，阐述了ＣＡＩ系统树型结构模块的具体实现。文中给出的ＣＡＩ教学信息反馈的数学模型、ＣＡＩ教学系统优化流程和教学信息理论的测定方法，对当前ＣＡＩ教学系统的研究设计具有普遍的指导意义     

计算机辅助教学（CAI）的教学功能

从分析教学系统出发着重探讨了学习的机制，并据此分析阐述了ＣＡＩ在教学系统中的地位和作用，ＣＡＩ软件编制的原则，指出编写和应用ＣＡＩ的必要性，最后对ＣＡＩ的应用情况作一讨论。     

现代化的教育技术和手段—CAI

本文阐述了ＣＡＩ的作用和地位，我国ＣＡＩ制作和应用的现状以及的问题，介绍了ＣＡＩ软件的制作 过程以及在《电工基础》课堂教学中对ＣＡＩ的应用感受。     

开发大学物理CAI软件的主要原则

从教学功能的角度对ＣＡＩ软件进行了分类，对指导ＣＡＩ软件开发和应用的三种学习理论进行了讨论并提出了开发大学物理ＣＡＩ软件应遵循的主要原则。     

多媒体《工程制图》CAI中的逻辑艺术

该文依据在计算机辅助教学（ＣＡＩ）课件制作中的经验，指出了ＣＡＩ系统是一种计算机系统，更是一种教学系统，具有教学功能的课件，应能体现一定的教学理论，教学策略，学习理论和ＣＡＩ设计理论，通过对人的思维特点和认真思考及全面训练和培养人的能力出发，以“投影面平行线”及“投影面垂直线”的投影特性的讲解为例，讲述了归纳和演绎的逻辑罹 具体运用。     

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     

On the Thermodynamic Limit for Responses to Static Electromagnetic Fields

For molecular systems,the quantum-mechanical treatment of their responses to static electromagnetic fields usually employs a scalar-potential treatment of the electric field and a vector-potential treatment of the magnetic field.Although the potential for each field separately is associated with the choice of an(unphysical)origin,the precise choice of the origin for the electrostatic field has little consequences for the results.This is different for the