基于.NET实现HTML文档的下载与清理

针对在Web信息抽取系统开发中遇到的关键性技术问题,如Web页的HTML文档下载,HTML到XML格式转换,XML文档清理等,分析和探讨了基于.NET技术的编程实现方法.     

基于Cocoon框架的XML文档转换

通过Cocoon架构,将XML文档分别转换成能够被网络浏览器识别的HTML文档．以及能被Acrobat readers识别的PDF文档和能被手机识别的WML格式文档．给出了文档格式转换的代码.     

基于Docbook的文档工具

Docbook是一种优秀的可将文件内容与文件样式信息分开处理的文件规范．Docbook提供了单一的源文件维护及版本控制,讨论了一种通过将非规范的XML和HTML文件转换为Docbook规范的文档,然后将Docbook规范文档转换为多种格式的文档,来实现一种更高效并具有扩展性和容错性的文档处理机制。     

一个基于Dublin Core元数据的超文本查询引擎

传统的WEB查询是基于HTML文档中的全文信息的，只要文档中包含某一待查询的词语，文档就会被选中，而不管该单词在文档中的作用和地位如何．提出了一种基于文档的Dublin Core元数据的查询方法，首先从HTML文档中提取出相应的Dublin Core元数据放入索引库中．当用户提出查询请求时，在索引库查找与用户请求相匹配的文档条目，然后将它们返回给用户．由于元数据是对文档资源的精确描述，因此这种查询方法得到的文档具有较高的相关性，避免了出现大量无关的查询结果．     

浅析VBScript的安全漏洞

通过嵌入在HTML文档中的脚本语言VBScript，可利用客户机的计算功能生成动态Web页面．文章分析了VBScript在利用客户机计算功能时存在的安全漏洞，并提出了相应解决对策．     

对图书资料存储方式自动转换的探讨

在数字图书馆建设过程中,为有效利用早期直接存储于HTML表格中的图书资料信息,提出了一种将HTML表格转换为XML文档的方法。该方法利用HTML表格的格式化信息及其蕴涵的结构信息,对HTML表格的语义层次进行理解,然后将HTML表格数据转储于关系数据库中,最后利用关系数据库对XML文档的支持将数据库文件转换为XML文档。     

一种用XSLT创建HTML页面的技术探讨

文章基于 XSLT技术 ,探讨了一种使用 XSLT将 XML文档转换为 HTML页的新技术 ,使用图形 Web页设计程序 ,如 . NET内建的 Web页设计程序或 Front Page中的 Web页设计程序 ,以图形方式创建页 ,然后查看 HTML背后的代码。之后可以将这些代码结合到 XSLT转换文件中。并用面向对象的高级程序设计语言 Visual Basic6. 0对上述算法的主要模型进行了实现。     

一种用XSLT创建HTML页面的技术探讨

文章基于XSLT技术,探讨了一种使用XSLT将XML文档转换为HTML页的新技术,使用图形Web页设计程序,如.NET内建的Web页设计程序或FrontPage中的Web页设计程序,以图形方式创建页,然后查看HTML背后的代码.之后可以将这些代码结合到XSLT转换文件中.并用面向对象的高级程序设计语言 Visual Basic 6.0 对上述算法的主要模型进行了实现.     

在VB中实现对IE的控制

随着网络应用的不断扩展，采用HTML语言编写的文档越来越多，如何在VB程序中实现对HTML文档的浏览是一个需要解决的问题。本文以一个实例说明了在VB中调用和控制Internet Explorer的方法。     

用JAVA处理非HTML格式文档的实例

在编制一些 HTML页面脚本时 ,我们常常需要部分站点允许访问非 HTML 格式的文档 ,比如Adobe PDF、Microsoft Word和 Microsoft Excel等等。笔者将以 Adobe PDF文档为例 ,介绍如何使用 JAVA语言向 Web客户端发送非 HTML格式文档的方法     

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)

正~~     

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