Sakai教学平台的基本架构和搭建方法

介绍了Sakai的基本架构、主要功能模块，并基于Windows系统，描述了搭建及使用Sakai教学平台的基本流程，以此帮助教师快速掌握Sakai教学平台、利用Sakai教学平台共享教学信息资源，扩大教学和学习空间，实现师生实时和非实时交互，改善并提高教学质量，提高教学和学习效率．     

基于Authorware的多媒体教学课件平台的构建

完成了一个基于Authorware的课件平台，该平台为用户提供了丰富的与外部的接口，使得各种教学积件可以灵活、自由的使用，对该教学平台的设计和相关技术进行了讨论。     

环境工程专业实践教学体系改革的研究与实践

在培养具有高竞争能力和创新精神的复合型高素质环境专业人才的过程中，实践教学环节显得尤为重要。本文分析了环境工程专业实践教学环节中存在的主要问题，结合东莞理工学院环境工程专业实践教学的具体情况，提出了构建由“公共实践教学平台、专业实践教学平台、综合实践教学平台”三个基本模块组成的实践教学体系。实践表明，优化和重构实践教学体系对提高大学生的工程实践能力、创新能力和综合素质有良好的推动作用。     

基于UML/J2E协作型多学科网络教学平台的设计与实现

针对当前网络教学平台存在的问题,结合计算机理论和教学理论,利用UML工具和J2EE技术,设计并实现了一个协作型多学科的网络教学平台,介绍了该平台的设计思想和系统建模,并对系统中一些关键问题的解决进行了阐述。     

基于4A网络教学平台网络课程的教学设计

网络课程教学设计的难点是交互式网络教学的复杂性，4A网络教学平台为教师进行网络课程设计、网上实施教学提供了较为全面的支撑平台。教师可使用4A网络教学平台进行网络课程教学目标、教学内容、作业与考试、交互式教学和多种教学策略的教学设计。     

基于NS2技术的计算机网络实践教学平台

讨论了计算机网络实践教学的现状、特点,用实例说明了基于NS2技术的计算机网络实践教学平台的应用,通过该实验平台,培养学生的实践动手能力、创新思维能力和科研意识．     

构建基于Moodle的项目化教学平台

本文介绍了Moodle平台，并阐述了基于Moodle平台的《C语言程序设计》项目化教学环境的创设，并对项目化教学进行了初步的实践和探讨，为教师实施项目化教学提供了一个参考案例。     

高校网络教学平台的设计与开发

随着国内高校远程教育的迅速普及，网络教学平台已经成为师生之间学习和工作的网络环境。它提供了比传统教学更加丰富的学习途径。本文以网络技术为基础对我校计算机系网络教学平台进行研究，利用当前流行的开发工具Dreamweaver、Asp语言、SQL语言等实现网络教学平台各种功能，从而达到共享各种异构教学资源、整合各种教学服务的目的。     

基于校园网的辅助教学平台的构建

web教学平台是一种新世纪新型的高校教学模式，是校园信息化建设的高级阶段。而基于校园网的辅助教学平台则是该模式的一个具体实现。文章介绍了基干校园网的辅助教学平台的设计思想，提出了架构该平台的总体设计规划和具体方案。归纳了其主要功能模块．同时对关键技术进行了探讨。     

基于Web技术的计算机实验教学平台的研究与实现

计算机的实验教学，在现代教育技术教学中已是十分基础的课程，基于Web技术的网络实验平台的建设已得到普及．本文根据本人教学中的实际应用，设计了一个具有小型的实验教学平台，在实际实验教学中的应用和研究．分析了教学过程中的需求，研究了基于Web技术的实验教学平台的实现技术．     

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.     

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.     

A computer generator for randomly layered structures

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

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.     

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