基于SGML的电子公文标准化研究与实现

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。     

数字图书馆建设涉及到的三种数据格式描述语言(SGML、HTML、XML)的特点介绍及比较分析

介绍了在数字图书馆信息资源建设中涉及到的三种数据格式描述语言,即电子文件格式。SGML、HTML与最新崛起的XML,并作简单的比较分析。     

基于SGML/XML的Internet信息发布

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考价值.     

Structured document storage and refined declarative and navigational access mechanisms in HyperStorM

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     

支持ERP模型输出的可配置文档生成器

在建立ERP业务模型之后,需要将其进行文档化输出,以协助ERP系统设计与开发人员理解模型并快速开发系统．分析了ERP模型的文档化需求,提出了一种基于页结构的ERP文档模型,建立文档与ERP模型之间的映射关系,并提出了基于XML的文档描述语言DDL。在此基础上,设计了一种文档生成器,通过标准文档模板配置以满足文档格式与内容的个性化需求,通过将ERP模型数据自动写入标准模板以自动生成DDL文档和最终Word文档。     

Graphic applications of the Standard Generalized Markup Language (SGML)

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.     

SGML语言的编译实现

ｓｇｍｌｔｏｏｌ是作者开发的一种支持各类ＳＧＭＬ应用系统的编译系统。ｓｇｍｌｔｏｏｌ动态解释ＤＴＤ和ＳＧＭＬ文档，将后者转换成一种规范化的内部结构，并保存到面向对象数据库ＯＳＣＡＲ中。ＯＳＣＡＲ中规范的ＳＧＭＬ数据结构２可作为其它ＳＧＭＬ应用系统的基础。     

基于HyTime的超媒体文档系统研究

超媒体文档系统不仅要求支持离散媒体（例如文本和静止图象）和连续媒体（例如声音和视频）等信息。而且要描述不同媒体之间的同步关系。为实现这样的超媒体文档系统,采用ＳＧＭＬ和ＨｙＴｉｍｅ文档标准来描述各种单一媒体之间的时空关系,主要讨论基于ＳＧＭＬ和ＨｙＴｉｍｅ标准的超本文档系统的实现问题。     

基于HyTime的超媒体文档系统的一种实现方法

超媒体文档由一系列结构化的信息组成,这些信息包含不同类型的媒体,传统的文档系统描述这些信息比较困难,ＨｙＴｉｍｅ标准作为ＳＧＭＬ的一个应用不仅能够描述超媒体文档的结构,耐用能描述不同媒体之间的同步关系,ＨｙＴｉｍｅ的主要缺点是非常复杂,不容易用软件实现全部模块的功能,文中提出了一种采用３层模型来实现符合ＨｙＴｉｍｅ标准的超媒体文档系统的方法,并用此模型实现了一个超媒体文档浏览系统。     

A Formal Model for Representation and Querying of Structured Documents

Most documents have a hierarchical structure, which can be made explicit by markup languages such as SGML. In this paper we propose a formal model for representation of hierarchically structured documents, to be used as the basis for document query languages. The model uses a redundant representation of the document elements to simplify the expression of common queries. As an illustration of the power of the model we show how queries might be expressed, both as set-theoretic expressions and in a simple algebra, and outline how queries might be evaluated in a practical system.     

XML语言在网页中的应用

SGML是一种在互联网上发布信息所使用的＂出版＂语言,是所有计算机都能够理解的标准通用标记语言,目前流行的HTML、XML等语言是SGML的实际应用。本文对网页制作中使用的HTML、XML尤其是XML等标记语言相关知识做了介绍,比较了两种种语言的不同与优缺点。     

HyOctane: a HyTime engine for an MMIS

We are interested in the development of distributed multimedia information systems that use the HyTime international standard as the data model and interchange format. We have developed and implemented a prototype system in which interactive multimedia presentations can be stored and retrieved. Sample document instances are externally encoded in HyTime and stored in the database using the HyTime data model. The architecture and operation of our system are presented. Issues related to using a HyTime engine for general multimedia presentation and interchange are discussed.     

基于文档类型定义约束的文档结构生成算法

文档类型定义(DTD)是一类文档逻辑结构的共同特征的规范化描述,作为文档内容层次关系描述的结构是文档类型定义的一个具体体现,并被文档类型定义所制约。通过采用一种快速的定位方法来支持文档结构节点在文档类型定义中的定位,本文提出了一个基于文档类型定义约束的文档结构生成算法,该算法可为基于结构的文档处理提供高效的实时约束机制和更严格的验证机制。     

SGML-based markup for literary texts: Two problems and some solutions

There is wide agreement on the need for a markup standard for encoding literary texts. The Standard Generalized Markup Language (SGML) seems to provide the best basis for such a standard. But two problems inhibit the acceptance of SGML for this purpose. (1) Computer-assisted textual studies often require the maintenance of multiple views of a document's structure, but SGML is not designed to accommodate such views. (2) An SGML-based standard would appear to entail the keyboarding of more markup than researchers are accustomed to, or are likely to accept. We discuss five ways of dealing with the first problem, and several ways of reducing the burden of markup. We conclude that the problem of maintaining multiple views can be surmounted, though with some difficulty, and that the markup required for an SGML-based standard can be reduced to a level comparable to that of other markup schemes currently in use.Ron Hayter is the Senior Software Developer of Software Exoterica Corporation, Ottawa, Canada.Maria Karibaba obtained the M.Sc. degree in Computing and Information Science at Queen's University and returned to Greece.George Logan is Head of the Department of English at Queen's University, Canada.John McFadden is the President of Software Exoterica Corporation, Ottawa, CanadaDavid Barnard is Head of the Department of Computing and Information Science at Queen's University, Canada.This paper has benefited greatly from comments provided by the referees.     

非结构化产品信息的分布式模型研究

以ＣＩＭＳ为代表的先进制造技术要求与适应的产品信息模型的支持。产品信息包含结构化和非结构化两种形式。非结构化产品模型往往建立在异构环境之上,无法抽象成单一的数据库的模式。目前对非结构化产品信息还没有形成合适的表达模型和相应的操作模型。提出的一个基于企业级异构环境下的非结构化产品信息的分布式模型,以ＳＧＭＬ／ＸＭＬ标准表达非结构化产品信息,其操作模型能在常规Ｗｅｂ／ＩＮＴＥＲＮＥＴ环境下方便地访问信     

ODA implementation for multimedia teleservices

The open document architecture (ODA) provides a format for document interchange within open systems which is independent of any particular communication service. Within the BERKOM teleservices, ODA is used as a component of multimedia mail messages as well as a base for joint editing. The paper begins with after a brief introduction of the teleservices. The main part of the paper describes the architecture of an ODA editor which can be used in conjunction with these teleservices. Although the base editor provides full ODA functionality, it can be automatically restricted to subsets by means of document application profiles. Finally, an overview is given of future editor developments.