首页 | 本学科首页   官方微博 | 高级检索  
相似文献
 共查询到20条相似文献,搜索用时 228 毫秒
1.
基于Dexter模型的超文本检索系统的研究   总被引:6,自引:2,他引:4  
本文介绍了超文本系统的Dexter 参考模型, 分析了模型的三层结构: 存储层、运行层和部件内部层, 以及存储层分别与运行层和部件内部层之间的接口机制: 显示说明和锚。并讨论了将Dexter 模型应用于超文本检索系统中, 使原文和倒排文件与超文本网络相对分离, 并利用单汉字检索技术实现超文本的动态链接。  相似文献   

2.
针对沥青混凝土桥面铺装层孔洞积水结冰对铺装层的受力影响,基于非线性有限元理论,对其进行仿真计算和敏感性分析。分析结果表明,铺装层中孔洞积水结冰对铺装层的受力极为不利,特别是对于四面体及六面体形状的孔洞;在铺装层高度方向上,位于铺装层顶部或者底部的正六面体形状孔洞积水结冰对铺装层的受力最不利;孔洞周围混凝土的受力还与铺装层的温度有关系。  相似文献   

3.
本文以学术型图书馆开展阅读推广服务为对象,主张创建基于智慧服务的自动向读者推荐馆内资源的阅读推广服务系统。该系统包含教育层、增强层、预测层,可提供九项针对科研工作的参考咨询服务和六项推荐阅读服务。其中,教育层是基础层,增强层是关键要素,预测层是顶层。预测层使用教育层和增强层过滤个人需求信息,准确发现与预测读者阅读需求,实现阅读推荐服务,为教学和科研工作提供定性的信息支持。  相似文献   

4.
随着交换技术的发展,第三层交换技术以逐渐普及。现今,陆续出现了第四层交换、第七层交换等多层交换技术。多层交换有助于实现LAN和WAN的桥接。本文对网络未来发展的多层交换技术进行了分析。  相似文献   

5.
本系统采用三层模型分别是HTML(用户层)+jsp和servlet(表示和业务逻辑层)+数据库层实现办公自动化系统;该系统采用三层功能独立的模块设计系统具有很好的可维护性和可扩展性。  相似文献   

6.
随着住宅产业的蓬勃发展,各种各样的住宅建设如雨后春笋,小高层住宅随之应运而生。这里所指的小高层,是指7层-12层的住宅,其平面设计类似于多层住宅,有载人电梯但无消防电梯,实质上是中高层住宅(7层至9层)和高层住宅(10层至12层)相加在一起的概念。小高层虽是高  相似文献   

7.
文中基于C#.NETT下三层架构数据库应用系统开发,首先对三层体系结构进行了详细分析,接着就C#下三层架构数据库应用系统的建立给出了以下设计步骤:设置数据访问层;设置表现层;数据添加、修改和删除。  相似文献   

8.
文中基于C#.NET下三层架构数据库应用系统开发,首先对三层体系结构进行了详细分析,接着就C#下三层架构数据库应用系统的建立给出了以下设计步骤:设置数据访问层;设置表现层;数据添加、修改和删除。  相似文献   

9.
张燕  连志英 《兰台世界》2012,(20):71-72
政府网站、公共档案馆网站、公共图书馆网站在政府公开服务信息方面的建设路径、资源建设、目录体系方面各有差异,公共档案馆有必要建设涵括理念层、资源层、编目层、维护层和渠道层的政府公开信息服务保障体系。  相似文献   

10.
高校图书馆利益相关者可以分为直接相关层、兄弟伙伴层、资助层、其他层四层,共九大类。在大数据环境下,这些利益相关者通过主导开展阅读推广活动,不仅能帮助高校图书馆进一步推进阅读推广活动,也能使自身在活动中受益。  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.
ABSTRACT

In today's current political environment raising support for millage renewals, bond campaigns or even millage continuations for public libraries is affected by national politics, and a tendency towards tax aversion on principle across the country. The lessons we can learn from the governing boards of small and rural public libraries are worth raising up to a greater national consciousness. Board governance, community consciousness, and facilities management are clear and logical tools that elected boards of public libraries can use to politick for support of libraries.  相似文献   

13.
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   

14.
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   

15.
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   

16.
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   

17.
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   

18.
This essay investigates key moments in the history of personal digital assistant (PDA) marketing to women. Analyzing promotional texts for three PDAs that received considerable press coverage from 1999 to 2001, this essay explores the cultural significance of the convergence of anxieties about women's place in the gendered division of labor with the computer industry's changing marketing imperatives. Drawing on an array of promotional texts, including news articles, press releases, promotional Web sites, and ads appearing in newspapers and magazines, this paper tells the story of how the computer industry aimed to sell smaller, faster computing devices to women while promising to mediate and thus reproduce women's overwork as paid and familial laborers. After experimenting with the PDA as a sexy fashionable gadget for working women, marketers approached women as mothers with “Audrey,” an Internet appliance designed for the kitchen.  相似文献   

19.
This study explores the attitudes and actions of bank managers toward communication spending during recession. Results of this study indicate that organizational leaders cut communication spending early during recession and also erroneously rely on the bank's financials to mitigate irrational customer withdrawals. This research is used to illustrate the need for public librarians to meet the needs of bank stakeholders when their institution ceases to communicate during crises, for academic librarians to educate students in undergraduate and graduate programs regarding heightened information needs during recession, and for corporate librarians to understand a potential avenue for competitive advantage during recession.  相似文献   

20.
毛彦妮  王菲菲 《图书情报工作》2012,56(18):93-98,126
指出共链分析已在商务网站评价、竞争情报分析、商业信息挖掘等领域有广泛应用。综合运用共链分析与社会网络分析的方法,对国内市场份额排名前50位的电子商务网站的企业竞争态势与竞争关系及地位进行综合分析,并对企业间潜在竞争关系挖掘进行初步探索,以期能对竞争情报方法论研究和国内电子商务市场的发展提供一定的启示和参考。研究发现,共链网络中节点的程度中心性与企业实际的市场份额之间存在显著的相关关系,且竞争关系多存在于不同组织下业务类型相似的企业实体,而有些互补服务的企业之间则是合作关系的存在,这一发现或许能为未来电子商务市场发展战略规划与制定提供一定的指导和帮助。  相似文献   

设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号