共查询到20条相似文献，搜索用时 46 毫秒
1.
随着Internet在全球广泛的应用,网络信息也随之大幅度增加。面对浩瀚的网络信息,如何能迅速准确地获取和利用自己需要的中文信息就成了一个大问题。目前解决这一问题的最佳途径就是使用搜索引擎。搜索引擎的使用已经成为中国当前第二大互联网应用(仅次于收发E-M ail)。它已成为网站建设的重要功能和网络信息挖掘的主要途径,为用户和网络信息源之间架起沟通的桥梁。搜索引擎就是利用自动抓取程序,在广域网或局域网上遍历各个结点使用全文检索技术对在各结点上抓取的信息进行分析,并加以索引、分类,建立相应的数据库,以备用户查询的一项信息… 相似文献
2.
网络用户信息查寻行为研究述评 总被引：11，自引：0，他引：11
从3个方面对国内外网络用户信息查询行为研究领域的主要进展和热点问题进行评介，包括：①网络用户信息查寻行为的相关概念；②主要研究内容，包括用户利用搜索引擎的信息查寻行为研究、特定用户群体信息查询行为研究、用户个体差异对网络信息查寻行为的影响、网络用户信息查寻行为模型的构建；③研究方法，包括查询日志分析法、问卷法、访谈法、观察法、出声思维法。 相似文献
3.
王林廷 《福建图书馆理论与实践》2006,(2):59-62
1 搜索引擎及其现实不足
1．1 搜索引擎及其分类
搜索引擎是用于帮助因特网用户查询信息的检索工作，它以一定的策略在因特网中搜集、发现信息，对信息进行理解、提取、组织和处理，并提供给用户，达到信息导航的目的。通常意义上的搜索引擎只是信息检索系统的前端，即面向用户的一面；而整个信息检索还包括系统后端的收集、索引信息等功能模块。从不同的角度来划分，搜索引擎有不同的类型：按其覆盖内容的范围来分，有通用型、专业型和特殊型;按是否有人参与索引来分， 相似文献
4.
5.
因特网上信息搜索引擎及搜索技巧 总被引：2，自引：0，他引：2
本文依据搜索引擎在网上获取信息及其提供服务的特点，对现有网络搜索引擎加以分类，并例举几种主要的信息搜索引擎，简述它们各自的特点，介绍利用这些搜索引擎获取网上信息的基本方法及技巧。 相似文献
6.
张桂玲 《现代图书情报技术》2003,(1):72-75
著者通过对具有代表性的搜索引擎在提供金融证券信息方面的性能进行测试与评价，从而得出综合性搜索引擎和专业性搜索引擎在提供信息方面的特征，以期使用户能够根据需要有针对性的选择搜索引擎，提高网上金融证券信息检索的相关性。 相似文献
7.
信息检索和网络数据挖掘技术的比较分析 总被引：2，自引：0，他引：2
在信息量极大丰富的网络资源中，蕴含着大量潜在的有价值的知识。搜索引擎只解决了信息查询的问题，而网络数据挖掘是为了揭示数据中隐含的知识，它是比信息检索层次更高的一种技术。它能够根据用户定义的要求，根据目标特征信息在网络上或者数据库中进行有目的的信息检索。通过信息检索和网络数据挖掘的比较分析，以及搜索引擎的功能分析来阐述数据挖掘在搜索引擎基础上的作用发挥。 相似文献
8.
国内中文搜索引擎的检索技巧 总被引：3，自引：0，他引：3
濮德敏 《中国科技资源导刊 (中国信息导报)》1999,(7)
随着互联网的广泛应用,全球互联网用户正以每月超过10％的速度增长。其中互联网中的中文网页至今已达到70多万个,使用中文上网入数已超过千万。随着网络信息的增多,要快速准确检索到需要的信息就越加困难。人们常常把搜索引擎称为"上同第一站"、"网络之门",因此有必要掌握搜索引擎的使用和它们的一些网址。搜索引擎是用来对网络信息资源管理和检索的一系列软件。有的引擎采用主动搜寻的方式,即每隔一段时间就将搜寻到的网址存入可供查询的大型数据库中;有的引擎采用被动更新的方式,即由网址的拥有者自行将信息登录到数据库中。多数引… 相似文献
9.
一、网络搜索引擎对科技期刊的影响 网络搜索引擎是Internet上的一个网站,它的主要任务是在Internet中主动搜索其他Web站点中的信息并对其自动索引,其索引内容存储在可供查询的大型数据库中.当用户利用关键字查询时,该网站会告诉用户包含该关键字信息的所有网址,并提供通向该网站的链接. 相似文献
10.
搜索引擎的未来 总被引：6，自引：1，他引：5
傅蓉 《中国科技资源导刊 (中国信息导报)》2002,(4):53-54
互联网在世界范围的蓬勃发展，不断推动着搜索引擎的更新换代，并呈现出集成化、产业化、智能化和多语化的趋势。一、搜索引擎的集成化在因特网上最早出现的是单独型的搜索引擎，如Al－taVista、Yahoo等。它只能在自己采集的数据库中查找用户所需的信息，而网络信息是十分浩瀚的，它所采集的信息往往只占网络资源的一小部分。据NEC研究所的科学家调查表明：在网络上可索引的公共网页数量大约是８亿，而没有一个搜索引擎标引的数量超过这个总量的１６％，可见通过一个搜索引擎找到的信息是很不完整、十分有限的。此外，每个搜索引擎的使用… 相似文献
11.
Josie Barnes Parker 《图书馆管理杂志》2013,53(6):731-737
ABSTRACTIn 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
12.
Milan Grba 《Slavic & East European Information Resources》2017,18(3-4):152-164
This article surveys a sample of sources of the information about Romania available to British readers in nineteenth century British newspapers and periodicals. It traces first contacts between the Romanian lands and Britain after the union of the principalities of Wallachia and Moldavia in 1859, then after their independence from the Ottoman Empire. The article highlights an increased Romanian interest in British periodicals, which reported and reviewed Romanian literature and scholarship. The article concludes that nineteenth century British newspapers and periodicals offer a great variety and wealth of new material previously unavailable or unknown to researchers. It also states that only a portion of a large quantity of this material has been indexed and is therefore available via the bibliographic sources mentioned in the article. The author argues for the need of a new and updated British-Romanian bibliography, which can draw on new online resources offering access to thousands of new newspapers and periodical records. 相似文献
13.
《Slavic & East European Information Resources》2013,14(1):25-74
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.
《Slavic & East European Information Resources》2013,14(4):25-33
ABSTRACT The paper looks at library approval plans for material published in Slavic, East European, and Eurasian countries from the selector's point of view. Reasons why a selector would or would not want one are examined. Success with approval plans requires monitoring receipts, as well as good and ongoing communication among the selector, the acquistions department, and the vendor. A preliminary list of vendors offering approval plans for the countries of the region appears in the appendix. 相似文献
15.
Neil De Young 《Publishing Research Quarterly》2009,25(3):139-146
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.
Barbara Lison 《图书馆管理杂志》2013,53(2):180-187
ABSTRACTGerman 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.
《Journal of Web Librarianship》2013,7(1):41-59
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.
为进一步提升武汉科技信息共享服务平台使用效率,本文从平台资源建设、资源应用、供需对接方式和供需特点等方面分析了武汉科技信息资源服务现状;基于需求和利用的角度,结合平台管理实践和走访用户、问卷调查等研究方法,从信息资源需求主体和平台自身建设管理两个维度,找出制约科技资源供需对接的主要因素;以市场化和制度化为创新理念,从政策创新、机制创新、市场化服务、环境营造、人才培养等方面提出平台建设由“资源集聚”向“需求导向”转变的对策建议. 相似文献
19.
Michelle Rodino-Colocino 《Critical Studies in Media Communication》2013,30(5):375-390
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
20.
Lindsay Dillingham 《Journal of Business & Finance Librarianship》2013,18(4):313-327
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