网络课程在大学英语教学中的运用

网络教学是外语教学发展的方向,计算机网络技术的发展为网络课程运用于大学英语教学提供了良好的平台。本文通过阐述网络课程的定义以及其教学设计的理论依据,着重探讨了网络课程的教学模式以及在大学英语教学中如何通过网络课程的有效利用来构建英语学习环境,促进大学英语教学的改革。     

浅谈现代教学手段与大学英语自主学习

本文对现代教学手段和大学英语自主学习做了初步探究;指出了网络教学的特点和它语大学英语自主学习的关系;明确了教师在大学英语自主学习中的作用和指导大学生自主学习时应该注意的问题。有助于各方进一步认识新一轮的基于计算机、网络的大学英语教学改革,共同努力以全面提高大学英语教学质量。     

浅谈多媒体网络技术对大学英语教学的影响

英语多媒体网络教学手段近年来已经逐渐应用于大学英语教学。随着大学英语教学改革的大幕逐渐拉开,英语多媒体网络教学将越来越显示出它的优势。本文试图从备课方式、授课方式、学习方式、评价方式等方面探讨多媒体网络技术对大学英语教学的积极影响。旨在促进多媒体网络技术在大学英语教学中的科学、合理应用。     

论以建构主义为理论基础的大学英语网络教学

网络环境下的英语教学是大学英语教学改革的趋势。本文从建构主义理论内涵入手,探讨它与大学英语网络教学的内在联系,并阐述如何合理利用多媒体网络资源,发挥学习者的主体作用,让英语学习朝着自主化、个性化方向发展,从而构建与建构主义学习理论相适应的大学英语网络教学模式。     

网络环境下大学英语自主学习教学模式设计

随着社会、经济和科学技术的迅猛发展,网络和多媒体技术在教育教学中的运用越来越广泛,从而导致教学方式和学习方式发生了重大变化.网络环境下的大学英语自主学习已经成为大学英语教学改革的一个重要目标.在网络环境下开展大学英语自主学习教学模式的设计与研究,以及在网络环境下开展大学英语自主学习的实践,对提高大学英语教学具有很大的现实意义.     

基于B-learning的大学英语教学模式的设计

Blended-learning是网络环境下常规教学与网络教学相结合的一种学习方式,融合学生的主体性和教师的主导性,学教并重,发挥在线教学与常规教学的优势互补,获得最佳教学效果。采用Blended-learning的理念,构建了基于B-learning的大学英语多媒体教学新模式,并运用于大学英语教学实践,推进大学英语教学改革。     

对多媒体网络环境下大学英语教学的思考

随着教育部关于大学英语教学改革工程与基于计算机和网络的大学英语教学软件研发的正式启动,我国高校掀起了大学英语多媒体网络辅助教学的高潮,人们也对这种新的教学模式寄予了厚望。网络教学环境是一个有别于传统教学的全新的教学环境,为了培养学生在网络环境下利用现代科技不断学习,具备独立接受、处理新信息的能力,必须根据课程和现有教学设备岛特点,不断转变教育观念,改进教育手段,在实践中不断尝试各种新颖的教学方法,努力培养学生自主学习的能力。本文就多媒体网络环境下的大学英语教学,提出了一些值得我们思考的问题。     

网络环境下大学英语自主学习的问题及对策

随着科技迅猛发展,计算机网络技术给大学英语教学带来了新的契机,网络环境下的大学英语教学新模式为学生的自主学习和教师的教学提供了更为有利的环境。本文分析了造成大学英语自主学习出现的一系列问题原因,提出了解决问题的三大对策。     

基于网络语料库的大学生英语自主学习

随着当前社会信息化、网络化技术的发展,给大学英语教学课程改革也带来了新的教学手段和方法。大学英语教学中网络语料库的应用改变了传统大学英语教学模式,使其成为有潜力和多元化的教学模式。本文在借鉴前人的经验上,主要探讨了基于网络语料库的大学英语自主学习的必要性,操作性及在该教学过程中应该注意的一些问题。     

基于网络环境的大学生英语自主学习能力的培养

网络教学技术和英语教学的结合，给英语教学带来了革命性转变。在这个时代背景下，培养学生的英语实际运用能力和自主学习已成为目前大学英语教学改革的方向。本文将探讨在网络环境下的大学英语教学中，教师应该如何帮助学生有效地自主学习，培养并提高其自主学习能力。     

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.     

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     

Exciton Seebeck in Molecular Systems

Various applications relevant to the exciton dynamics,such as the organic solar cell,the large-area organic light-emitting diodes and the thermoelectricity,are operating under temperature gradient.The potential abnormal behavior of the exicton dynamics driven by the temperature difference may affect the efficiency and performance of the corresponding devices.In the above situations,the exciton dynamics under temperature difference is mixed with