共查询到19条相似文献,搜索用时 109 毫秒
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基于SGML的电子公文标准化研究与实现 总被引:3,自引:0,他引:3
文中通过对现有国家行政机关公文处理流程的研究,提出并具体实现了一个基于SGML的电子公文标准。按照国家有关规定制定了一个电子公文的SGML文件类型定义,设计了一个电子公文的SGML模板,并开发一下带有语法制导功能的SGML公文编辑器,对生成的SGML格式公文还提供了转换器,实现了网上电子文化的标准化。 相似文献
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本文着重介绍了New-UIGMS在人机界面设计和实现中的作用。New-UIGMS以将界面编辑器和界面动态流程控制设计相结合的方法,向界面设计人员提供了支持。 相似文献
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XML——新的Web开发工具 总被引:6,自引:0,他引:6
XML是当前Web技术领域的热点,它源于SGML是SGML的一个子集,文中,介绍XML的起源和特点,给出一个示例说明怎样书写XML文档,并简要介绍XML的应用和未来。 相似文献
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潘志庚 《计算机工程与应用》1996,32(5):37-41
标准通用置标语言(SGML)是一种描述型置标语言,它提供一组规则供文档设计者定义文档的结构。本文简要介绍SGML语言的产生、发展、基本特征和文档结构等内容,然后结合我们自己的工作对SGML到页面描述语言PostScript的转换方法进行了讨论,并给出了简单例子。 相似文献
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本文报告一种能将FSM自动转换为SDL描述的SDL描述生成器-SDL-TRAN。除了自动变换部分之外,SDL-TRAN还包含一个具有友好用户接口的图形编辑器。 相似文献
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Ruibin Qu 《计算机辅助绘图.设计与制造(英文版)》1995,(2)
ANEWPLANARBOOLEANOPERATIONALGORITHMBASEDONLINESEGMENTSORTINGMaLin;DuXiqing;GuanRongchangSMOOTHSURFACEINTERPOLATIONOVERARBITRA... 相似文献
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基于SGML/XML的Internet信息发布 总被引:3,自引:0,他引:3
杨建武 《计算机工程与应用》2000,36(11):5-7,22
随着Internet技术的发展与应用的深入,特别是电子商务等深层次应用的迅速崛起,结构化地组织Internet上的信息,保持信息本身的结构与语义变得越来越重要。文章首先给出一种基于SGML/XML进行结构化信息组织与Internet信息发布的模型,并重点讨论了实现该模型的两个关键问题:SGML/XML信息的获取与信息的Internet发布。文中讨论的模型与关键问题对基于XML的应用系统具有很好的参 相似文献
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基于SGML/XML的文件结构化研究与实现 总被引:6,自引:0,他引:6
由于计算机普及和Internet发展的迅速,信息传播和利用的多样化对信息的标准化需求日趋迫切,依照SGML/XML语言,从分析文件结构入手,设计文件类型定义(DTD),并用结构制导方法实现文件编辑器,以自动生成符合DTD语法的结构化文件,而达到文件信息的标准化要求。 相似文献
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The Standard Generalized Markup Language (SGML) and the Extensible Markup Language (XML) allow users to define document-type definitions (DTDs), which are essentially extended context-free grammars expressed in a notation that is similar to extended Backus–Naur form. The right-hand side of a production, called a content model, is both an extended and a restricted regular expression. The semantics of content models for SGML DTDs can be modified by exceptions (XML does not allow exceptions). Inclusion exceptions allow named elements to appear anywhere within the content of a content model, and exclusion exceptions preclude named elements from appearing in the content of a content model. We give precise definitions of the semantics of exceptions, and prove that they do not increase the expressive power of SGML DTDs when we restrict DTDs according to accepted SGML practice. We prove the following results:1. Exceptions do not increase the expressive power of extended context-free grammars.2. For each DTD with exceptions, we can obtain a structurally equivalent extended context-free grammar.3. For each DTD with exceptions, we can construct a structurally equivalent DTD when we restrict the DTD to adhere to accepted SGML practice.4. Exceptions are a powerful shorthand notation—eliminating them may cause exponential growth in the size of an extended context-free grammar or of a DTD. 相似文献
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This paper describes the multilingual text editor MtScript developed in the framework of the MULTEXT project.MtScript enables the use of many differentwriting systems in the same document (Latin, Arabic,Cyrillic, Hebrew, Chinese, Japanese, etc.). Editingfunctions enable the insertion or deletion of textzones even if they have opposite writing directions.In addition, the languages in the text can be marked,customized keyboard input rules can be associated witheach language and different character coding systems(one or two bytes) can be combined. MtScript isbased on a portable environment (Tcl/Tk). MtScript.1.1version has been developed underUnix/X-Windows (Solaris, Linux systems) and otherversions are planned to be ported to the Windows andMacintosh environments. The current 1.1 versionpresents several limits that will be fixed in futureversions, such as the justification of bi-directionaltexts, printing support, and text import/exportsupport. Future versions will use SGML and TEI norms,which offer ways of encoding multilingual texts andare to a large extent meant for interchange. 相似文献
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The Standard Generalized Markup Language (SGML) is a language for representing document structure. This paper discusses ways in which the SGML language might be used to represent graphic as well as textual contents of a document. By using SGML markup for both graphics and text, a document processing application can achieve a more uniform treatment and tighter coupling between these two types of materials. 相似文献
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首先对DTD和CSS的语法规则进行了简单介绍,然后给出了一个对DTD和CSS进行语法分析和编辑的设计思路,最后给出了编辑器的实现效果以及对下一步工作的展望。 相似文献
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Structured document storage and refined declarative and navigational access mechanisms in HyperStorM 总被引:2,自引:0,他引:2
Klemens Böhm Karl Aberer Erich J. Neuhold Xiaoya Yang 《The VLDB Journal The International Journal on Very Large Data Bases》1997,6(4):296-311
The combination of SGML and database technology allows to refine both declarative and navigational access mechanisms for
structured document collection: with regard to declarative access, the user can formulate complex information needs without
knowing a query language, the respective document type definition (DTD) or the underlying modelling. Navigational access is
eased by hyperlink-rendition mechanisms going beyond plain link-integrity checking. With our approach, the database-internal
representation of documents is configurable. It allows for an efficient implementation of operations, because DTD knowledge
is not needed for document structure recognition. We show how the number of method invocations and the cost of parsing can
be significantly reduced.
Edited by Y.C. Tay. Received April 22, 1996 / Accepted March 16, 1997 相似文献
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Successful applications of digital libraries require structured access to sources of information. This paper presents an approach to extract the logical structure of text documents. The
extracted structure is explicated by means of SGML (Standard Generalized Markup Language). Consequently, the extraction is
achieved on the basis of grammars that extend SGML with recognition rules. From these grammars parsing automata are generated.
These automata are used to partition a flat text document into its elements, to discard formatting information, and to insert
SGML markups. Complex document structures and fallback rules needed for error tolerant parsing make such automata highly ambiguous.
A novel parsing strategy has been developed that ranks and prunes ambiguous parsing paths. 相似文献