基于CSCW的中文超媒体技术的研究实现

讨论了基于ＣＳＣＷ的新一代中超媒体技术,主要介绍超媒体系统数据结构模型,分布与协作技术,超链自动链接技术,超媒体系统的中检索技术,超媒体系统的用户界面等,并介绍了一个基于工作组网络系统Ｗｉｎｄｏｗｓ ｆｏｒ Ｗｏｒｋｇｒｏｕｐｓ的超媒体原型的系统实现,该系统是一个面向大容量超媒体中档案的协作写作系统,适用皇大中型中电子图书和档资料库的光盘出版物的制作。     

开放超媒体系统模型的一种实现

本文在提出开放超媒体概念的基础上 ,对开放超媒体系统所具备的特征、设计准则、系统模型等进行了探讨 ,最后给出了系统实现的具体方法     

自适应超媒体技术在CAI中的应用研究

本文介绍了超文本系统和超媒体系统的概念、系统模型和组成要素。重点介绍了自适应超媒体技术在CAI中的应用。     

超媒体技术在计算机辅助教学课件中的应用

文章主要讨论超媒体技术在计算机辅助教学 (CAI)课件开发中的应用 ,力求将最新课件设计思想与课件设计结合 ,系统、全面地分析基于用户端的超媒体课件设计方法。该文论述了课件中应用超媒体的优越性 ,并给出了此类型课件系统的一般结构 ,讨论了包括课件版面设计、课件模式设计、超媒体和课件题库系统的制作方面的问题 ,最后对未来课件开发的发展作出一些展望。     

超媒体协同编著系统CHES

超媒体是一种表示和管理多媒体信息的强有力的技术 近些年来 ,随着计算机软硬件技术的发展 ,超媒体技术的应用变得空前活跃 文中主要从编著方法、超媒体组织模型、系统控制结构和并发控制几个方面介绍了近期开发的超媒体协同编著系统CHES ,提出了一种以层次导航图为主线的混合编著方法 ,在此基础上实现了一种分散式的多Agent控制结构 ,提高了系统的灵活性和工作效率     

超媒体系统模型NEXTER

介绍一种新型的基于客户／服务器的超媒体模型─—ＮＥＸＴＥＲ的总体结构及其实现方法．该模型的主要优点是方便在网络上实现分布式的超媒体系统，以及简化在已有的超媒体系统中增加新媒体类型的手续．基于ＮＥＸＴＥＲ模型的超媒体系统工作在一个数据库系统之上，由４类服务器组成，其中，会话服务器管理对超媒体的游览，媒体服务器处理对各种媒体形式的内部数据，环境服务器向用户提供了界面，而超媒体数据库管理系统管理超媒体数据库．     

超媒体CAI的教学应用

在实际教学工作中,超媒体CAI的应用已是现代教学的发展方向 ,本文通过对运用超媒体CAI进行教学的作用与效果阐述了超媒体CAI在现代教学中的地位, 并且对超媒体CAI的设计原则、技术运用、素材准备及注意事项进行了相应的介绍.全文讨论的观点与方法对超媒体CAI的普及应用有一定的现实意义.     

超媒体系统的模型研究

超媒体技术是一种管理多媒体信息的有效方法，这是一种不同于以往线性文本和表格式数据库的全新的管理手段．指出了超媒体系统是以人类的记忆和思维模型及传统的信息管理技术为基础而合理发展起来的自然产物，给出了超文本和超媒体系统中组成单位的定义，应用面向对象的方法给出超媒体系统的分层模型，还分析了超媒体系统与其它信息系统的关联．     

超媒体协同编著系统CHES

超媒体是一种表示和管理多媒体信息的强有力的技术。近些年来，随着计算机软硬件技术的发展，超媒体技术的应用变得空前活跃。文中主要从编著方法、超媒体组织模型、系统控制结构的并发控制几个方面介绍 了近期开发的超媒体编著系统CHES，提出了一种以层次导航图为主线的混合编著方法，在此基础上实现了一种分散式的多Agent控制结构，提高了系统的灵活性和工作效率。     

超媒体机械零件 CAD 系统的研究

提出了超媒体机械零件ＣＡＤ系统的结构框架,讨论了系统基本信息模块的分类,分析了构成模块的内容和数据特征,给出了不同类型、不同特征数据模块的实现方法和工具,并以轴类零件ＣＡＤ系统为例,说明了超媒体ＣＡＤ系统的可行性和优越性。     

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