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1.
针对“基于用户信息服务”的数字图书馆体系结构下信息集成过程中存在的普遍问题.本文提出一种基于XML和Web Services技术、复制集成和模式集成相结合的信息集成模型,重点分析了该模型的结构、各组成部分的功能以及模型的运行机理,并简单说明了该模型在数字图书馆中的应用方式。本文的研究思路对数字图书馆信息集成技术的实现有一定的借鉴意义。  相似文献   

2.
本文首先介绍了数字图书馆联盟的定义、目的和组合原则,简述了基于Internet/Intranet网络的Web Services技术及在数字图书馆联盟网中应用的优势,讨论了基于Web Services技术的联盟网络的Web Services接口的基本功能、网络架构、成员图书馆管理系统的应用体系结构。  相似文献   

3.
针对数字化校园建设中存在的校园一卡通系统及其应用子系统异构、分散的现状,结合Web Services和COM+技术,采用一种新的基于Web Services和COM+技术的校园一卡通信息集成架构。把各种应用系统看成用XML描述的资源,通过XML传递参数而不是传递处理数据。集成架构屏蔽系统间的差异,实现异构环境下的信息集成。  相似文献   

4.
Web Services与数字图书馆的互操作问题   总被引:2,自引:0,他引:2  
本文介绍了一种可用于解决数字图书馆的互操作问题的新的计算模式Web Services,分析它与以往的数字图书馆互操作解决方案的不同之处,并进一步探讨了近年被数字图书馆领域广为看好的互操作解决方案OAI在Web Services环境下的改进。  相似文献   

5.
跨数字图书馆检索关键技术研究   总被引:1,自引:0,他引:1  
探讨了跨数字图书馆检索的关键问题——检索结果的传输问题,提出了开发跨数字图书馆检索中数据传输需要注意的5个事项,阐述实现分布式数据传输的6种方案,并以5种事项为标准分析比较了各种技术的优缺点,最后提出以Web Services作为解决方案,实现跨数字图书馆检索并给出调用Web服务的代码描述。  相似文献   

6.
基于Web Services的异构资源共享平台的研究   总被引:1,自引:0,他引:1  
文章针对目前我国数字图书馆中普遍存在的信息冗余、重复建设、信息孤岛、信息关联程度低等问题,引入Web Services技术,提出了基于Web Services的分布式异构资源库信息共享方案的系统模型。  相似文献   

7.
本文概括了Web挖掘在数字图书馆中的应用、Web挖掘的难点及XML在Web数据挖掘中的优势,说明了将XML应用于Web数据挖掘的几个方面,最后给出一个利用XML及Java类进行Web挖掘的实例.  相似文献   

8.
Web抽取技术在数字图书馆中的应用   总被引:2,自引:0,他引:2  
从Web页面中挖掘有价值的信息是数字图书馆技术应用的一个重要方式。目前Web页面信息描述大多教是用XML表示的,Web数据抽取技术是Web信息挖掘的关键,文章提出了一种面向HTML或XML描述的web页面的web数据抽取模型并阐述了实现过程。  相似文献   

9.
国外有人设计了一种新的实现Web Services的XML编程语言——XL。XL完全适应W3C的标准。其主要优点是让编程人员集中关注程序的应用逻辑。XL为Actions提供了在Web Services实现中执行的典型高层级开放结构,编程人员的效率、程序的进化能力等将有实质性的提高。本文介绍了XL的语法,并给出一个XL Web Service程序实例。  相似文献   

10.
信息表现、信息系统的构成方式及其功能是信息学永恒的三大研究课题.具体到Web,可指Web信息资源的表现、Web上分散的Web服务器及网页的全文检索功能.由于HTML不能表现资源的内容含义、各个服务器上的资源单纯地通过Hyperlink相互连接,带来了全文检索精度低和Web系统间互操作性差等问题.同时,检索结果的再利用、满足个性检索等知识性功能相对较弱.文章针对学术信息,提出了结构化数字对象(Structured Digital Object,SDO)的概念,此概念综合表现了信息的粒度、构造、内容含义三个重要特性,并采用XML记述SDO(简称SDO/XML),设计开发了Web资源原型检索系统、设计了电子期刊和数字图书馆等典型的Web资源系统,在此基础上进一步设计和开发了可实现信息资源再利用和系统间互操作的Global Digital Library(GDL)原型系统.为达到上述目的,GDL原型系统中引入了Web Services和Topic Maps等相关成熟技术.在考察部分,讨论了应如何实现大规模系统的问题.  相似文献   

11.
ABSTRACT

The article examines the most important periodicals of ethnic minorities in Poland. After 1989, many ethnic groups (e.g., Germans and Romanies) were allowed to publish journals and newspapers for the first time since the end of World War II. The publications examined show the rich cultural life of the various ethnic groups as well as their current status in Poland. In addition to popular titles, some scholarly publications are also discussed.  相似文献   

12.
The author answers a reference question on bibliographic sources for the Ukrainian periodical press 1840–1850. Helpful publications include bibliographies, guides, and library catalogs. These potentially make mention of revolutionary developments in Hungary (such as the Twelve Points paragraph of the Demands of the Hungarian Nation in March 1848, the subsequent April Laws, and Hungary's declaration of independence in April 1949), and elsewhere in the Hapsburg Empire.  相似文献   

13.
ABSTRACT

The history of the almanac in Croatia is reconstructed through primary research in bibliographic and archival sources. The almanac is a vehicle for knowledge communication in informal contexts, engaging both oral tradition and literary forms traceable to medieval literacy and ways of structuring knowledge. The history of the almanac in Croatia reflects the changing context of the book trade, literacy, and the evolution of language. Four main stages are identified: (1) the beginning of the annual almanac in the seventeenth century; astrological almanacs reflecting the sensibility of the Baroque period; (2) the Enlightenment's stimulation of almanac publishing in the spirit of contemporary secular reforms in agriculture and education; (3) nineteenth-and twentieth-century almanac trade, showing complex and overlapping networks for the production, distribution and appropriation of printed almanacs;(4) roughly the end of World War II, when the almanac slowly moved out of the role of a popular mass medium and into specialized niches represented by regional, diaspora, and religious almanacs.  相似文献   

14.
Some key questions for publishers in today’s market are: Could Amazon’s recent merger and acquisitions strategy create a disruptive or paradigm shifting business model in the publishing industry? Do their recent actions post mergers and acquisitions illustrate a predicable pattern of behaviour that publishers can strategize around? This paper will explore these questions and look at some of the possible reasons behind Amazon’s business practices and the possible consequences to publishers.  相似文献   

15.
ABSTRACT

German authorities are expecting more than 1 million refugees by the end of 2015. These people come to Germany to seek protection and assistance and to build a new life, therefore it is important to welcome them and to assist them in their integration as soon as possible. This situation creates a versatile and perfectly fitting opportunity for cultural and educational programs, including libraries, which can play a vital role in this integration process. The key to integration is the knowledge of the German language, and the most important challenge now is to teach the necessary language skills to as many asylum-seekers as possible.  相似文献   

16.
Abstract

Many libraries use RSS to syndicate information about their collections to users. A survey of 65 academic libraries revealed their most common use for RSS is to disseminate information about library holdings, such as lists of new acquisitions. Even though typical RSS feeds are ill suited to the task of carrying rich bibliographic metadata, great potential exists for developing applications that can exploit metadata exposed to Web services via RSS. Using the MODS metadata format, entire catalog records can be seamlessly embedded in RSS 2.0 feeds. Existing tools, such as Library of Congress Java toolkits and XSLT stylesheets, can facilitate this process, while a new XSLT stylesheet may be used to create the RSS feeds complete with MODS records. As an example of the added functionality these MODS/RSS feeds can offer, records from a MODS-enriched RSS feed can be ingested into a non-RSS application such as Zotero. As more emerging library technologies use Web services architectures to handle data objects, the ability to syndicate catalog records will become more critical to providing innovative library Web services.  相似文献   

17.
SUMMARY

The Nevada Constitution provides voters with the ability to propose new statutes, amendments to existing statutes, and amendments to the State constitution through the initiative petition process. Voters can also approve or disapprove of existing statutes through the referendum petition process. Both require the circulation of a petition to collect a minimum number of signatures before the Secretary of State will place the measures on the ballot for the general election. As with other topics of law, Nevada has a profound shortage of research resources on initiatives and referenda, but State law and government Web sites provide enough information to allow for significant research.  相似文献   

18.
SUMMARY

This article is a case study of Ariel use at the University of Texas at Austin. The author divides the history of Ariel use into three distinct stages: resistance, full implementation, and enhanced. For each stage the advantages and disadvantages of using Ariel are discussed. The author concludes that using Ariel saves both money and staff time and permits faster delivery of documents than other methods.  相似文献   

19.
SUMMARY

CISTI, the Canada Institute for Scientific and Technical Information, is one of the world's largest document delivery suppliers, and was among the first to be fully automated. The revolutionary Intel-liDoc system, developed during the years 1993 to 1995, provided for end-to-end automation of the document delivery process, which has enabled CISTI to improve its service and accommodate growth. From the beginning Ariel was, and remains, an integral part of IntelliDoc. This article describes how Ariel has been integrated into IntelliDoc and into CIS-TI's services, showing the benefits to CISTI and to its clients.  相似文献   

20.
The author describes the Slavic Humanities Index, a bibliographic database of scholarly and cultural articles on subjects including history; literature; language teaching; linguistics; philosophy; ethnology; performing arts; and cultural, borderland, and regional studies. She discusses its development, its current form and functionality, and plans for the future.  相似文献   

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