基于知识管理的网络教学系统设计

随着网络教育的深入发展，网络教学系统的设计逐渐成为该领域关注的焦点．本文针对网络教学系统的设计现状，引进知识管理的理念与技术，设计与实现了基于知识管理的网络教学系统．     

基于知识管理理论的网络辅助教学系统研究与设计

网络辅助教学系统可以弥补传统课堂教学不足,在教育中起着越来越突出的作用。知识管理理论为网络辅助教学系统的设计与开发提供了一个新的视角和新的思路。基于知识管理的网络课程注重知识的获取、共享和交流,强调显性知识与隐性知识的转换,最终达到知识创新。将知识管理的理论、方法和技术应用于网络辅助教学系统的设计与开发以促进学习者从显性知识向隐性知识过度,提出了基于知识管理的网络辅助教学系统的基本设计原则、策略、设计过程模型和系统框架模型。最后将结论应用于系统设计,开发了"JAVA网络辅助教学系统"原型,并通过问卷调查获得了该原型的评价。     

网络教学系统的教学策略设计与应用

基于中小学校园网应用的网络教学系统为例，探讨一下网络教学系统的教学策略的设计与应用．     

面向知识管理的案例教学系统设计

知识经济环境下,高校学生面临着知识快速更新和创新能力培养的挑战,本文从知识管理的角度,对现 有的网络教学系统进行了分析,提出了基于KM的案例教学系统架构．     

基于校园网的多媒体网络教学系统、教学模式与课件制作

在校园网上建立多媒体网络教学系统与网络教学课件是校园网应用建设的一个很关键领域，它可以充分利用校园网的技术资源为教学服务，充分调动教师的积极性，使有限的教学资源得到充分的发挥．是现代化教育教学实施的重要手段之一．本文探讨了一种基于校园网的多媒体网络教学系统的设计和直播课堂与在线学习两种形式的多媒体网络课件的制作方法．     

Windows Media 9.0在网络教学系统中的应用

介绍了微软的Windows Media 9．0技术，讨论了在网络教学系统中采用Windows Media 9．0技术对流媒体课件的生成、管理、点播以及服务进行的设汁，最后给出了在网络教学系统中实现流媒体课件生成的关键代码。     

基于多Agent的智能网络教学系统研究

针对现有网络教学系统存在的不足，采用建构主义学习理论，结合Agent技术对网络教学系统进行研究，设计了基于Agent的智能网络教学系统模型，实现了基于多Agent的智能网络教学系统，从而提高了现有网络教学系统的智能化、个性化水平，继而提高了网络教学质量。     

体育学院通用多媒体教学系统的开发

以VISUAL BASIC6．0为开发工具、HIML语言为脚本配合Java编程工具开发的体育学院通用多媒体教学系统平台，包括教学系统的管理系统、多媒体包括影视剪辑、三维动商、GIF、BMP、声音、音乐等多媒体文件库的集成系统和网络教学系统，是计算机多媒体教学较为实用的课件开发、管理和运行的系统，配合开发的网络教学系统的较理想系统平台．     

智能教学系统中基于本体的知识表示及推送研究

首先分析了现有网络教学系统普遍存在的不足,提出智能教学系统的基本架构.将智能教学系统中的知识库划分为知识空间和信息空间,并利用Protégé构造了知识空间的本体模型;最后,制定了智能教学系统推送规则并设计了相应的推送算法.     

新型多媒体网络教学系统的构建及教学模式的研究

多媒体网络教学系统是不同于传统多媒体系统的一种新型网络教学系统，现已成为现代电化教学系统的主流构思．本文通过对多媒体网络教学系统的构建及教学模式进行探讨，建立满足现代电化教学的多媒体网络系统，以取得高效的课堂教学效率．     

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.     

Characterization of Ordovician carbonate reservoirs, southeastern Saskatchewan, Canada

The discovery of the prolific Ordovician Red River reservoirs in 1995 in southeastern Saskatchewan was the catalyst for extensive exploration activity which resulted in the discovery of more than 15 new Red River pools. The best yields of Red River production to date have been from dolomite reservoirs. Understanding the processes of dolomitization is, therefore, crucial for the prediction of the connectivity, spatial distribution and heterogeneity of dolomite reservoirs.The Red River reservoirs in the Midale area consist of 3～4 thin dolomitized zones, with a total thickness of about 20 m, which occur at the top of the Yeoman Formation. Two types of replacement dolomite were recognized in the Red River reservoir: dolomitized burrow infills and dolomitized host matrix. The spatial distribution of dolomite suggests that burrowing organisms played an important role in facilitating the fluid flow in the backfilled sediments. This resulted in penecontemporaneous dolomitization of burrow infills by normal seawater. The dolomite in the host matrix is interpreted as having occurred at shallow burial by evaporitic seawater during precipitation of Lake Almar anhydrite that immediately overlies the Yeoman Formation. However, the low δ18O values of dolomited burrow infills (-5.9‰～ -7.8‰, PDB) and matrix dolomites (-6.6‰～ -8.1‰, avg. -7.4‰ PDB) compared to the estimated values for the late Ordovician marine dolomite could be attributed to modification and alteration of dolomite at higher temperatures during deeper burial, which could also be responsible for its 87Sr/86Sr ratios (0.7084～0.7088) that are higher than suggested for the late Ordovician seawaters (0.7078～0.7080). The trace amounts of saddle dolomite cement in the Red River carbonates are probably related to "cannibalization" of earlier replacement dolomite during the chemical compaction.     

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.     

A computer generator for randomly layered structures

AcomputergeneratorforrandomlylayeredstructuresYUJia shun1,2,HEZhen hua2(1.TheInstituteofGeologicalandNuclearSciences,NewZealand;2.StateKeyLaboratoryofOilandGasReservoirGeologyandExploitation,ChengduUniversityofTechnology,China)Abstract:Analgorithmisintrod…     

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.     

海南岛地体及其毗邻陆缘晚中生代—新生代古地磁研究和构造演化

本文叙述了对海南岛及其毗邻大陆边缘白垩纪到第四纪地层岩石进行古地磁研究的全部工作过程。通过分析岩石中剩余磁矢量的磁偏角及磁倾角的变化,提出海南岛白垩纪以来经历的构造演化模式如下:早期伴随顺时针旋转而向南迁移,后期伴随逆时针转动并向北运移。联系该地区及邻区的地质、地球物理资料,对海南岛上述的构造地体运动提出以下认识:北部湾内早期有一拉张作用,主要是该作用使湾内地壳显著伸长减薄,形成北部湾盆地。从而导致了海南岛的早期构造运动,而海南岛后期的构造运动则主要是受南海海底扩张的影响。海南地体运动规律的阐明对于了解北部湾油气盆地的形成演化有重要的理论和实际意义。     

An Index mechanism for multi-scale view in spatial databases

There are numerous geometric objects stored in the spatial databases. An importance function in a spatial database is that users can browse the geometric objects as a map efficiently. Thus the spatial database should display the geometric objects users concern about swiftly onto the display window. This process includes two operations:retrieve data from database and then draw them onto screen. Accordingly, to improve the efficiency, we should try to reduce time of both retrieving object and displaying them. The former can be achieved with the aid of spatial index such as R-tree, the latter require to simplify the objects. Simplification means that objects are shown with sufficient but not with unnecessary detail which depend on the scale of browse. So the major problem is how to retrieve data at different detail level efficiently. This paper introduces the implementation of a multi-scale index in the spatial database SISP (Spatial Information Shared Platform) which is generalized from R-tree. The difference between the generalization and the R-tree lies on two facets: One is that every node and geometric object in the generalization is assigned with a importance value which denote the importance of them, and every vertex in the objects are assigned with a importance value,too. The importance value can be use to decide which data should be retrieve from disk in a query. The other difference is that geometric objects in the generalization are divided into one or more sub-blocks, and vertexes are total ordered by their importance value. With the help of the generalized R-tree, one can easily retrieve data at different detail levels.Some experiments are performed on real-life data to evaluate the performance of solutions that separately use normal spatial index and multi-scale spatial index. The results show that the solution using multi-scale index in SISP is satisfying.     

《Chinese Science Bulletin》SUBJECT INDEX TO VOLUME 59(2014)

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Achieving Unusual States of Matter Under High Pressure

The elongation method,originally proposed by Imamura was further developed for many years in our group.As a method towards O(N)with high efficiency and high accuracy for any dimensional systems.This treatment designed for one-dimensional(ID)polymers is now available for three-dimensional(3D)systems,but geometry optimization is now possible only for 1D-systems.As an approach toward post-Hartree-Fock,it was also extended to