{"resolved":true,"match_type":"uuid","source_type":"original_book","book_id":"ae053936-f6b1-488b-8973-bb2332d1be14","title":"数字技术研究","author":null,"edition":null,"publisher":null,"year":null,"isbn":"9787308182003","requested_by":"printed_page","book":{"source_type":"original_book","book_id":"ae053936-f6b1-488b-8973-bb2332d1be14","id":"ae053936-f6b1-488b-8973-bb2332d1be14","uuid":"ae053936-f6b1-488b-8973-bb2332d1be14","title":"数字技术研究","normalized_title":"数字技术研究","author":null,"edition":null,"publisher":null,"year":null,"isbn":"9787308182003","isbns":["9787308182003"],"parsed":true,"ai_readable":true,"document_type":"book","page_count":790,"navigation_url":"https://workshop.closeclaw.top/ai/book/ae053936-f6b1-488b-8973-bb2332d1be14","title_url":"https://workshop.closeclaw.top/ai/title/%E6%95%B0%E5%AD%97%E6%8A%80%E6%9C%AF%E7%A0%94%E7%A9%B6","fixed_page_url_template":"https://workshop.closeclaw.top/ai/book/ae053936-f6b1-488b-8973-bb2332d1be14/page/{printed_page}","path_api_url_template":"https://workshop.closeclaw.top/api/ai/book/ae053936-f6b1-488b-8973-bb2332d1be14/page/{printed_page}","read_url":"https://workshop.closeclaw.top/api/ai/read/ae053936-f6b1-488b-8973-bb2332d1be14","page_url":"https://workshop.closeclaw.top/api/ai/books/ae053936-f6b1-488b-8973-bb2332d1be14/page","search_url":"https://workshop.closeclaw.top/api/ai/books/ae053936-f6b1-488b-8973-bb2332d1be14/search"},"page":{"printed_page":"58 / 79","pdf_page":103,"physical_index":103,"physical_index_base":0,"printed_page_status":"recognized","page_sha256":"30fe32415702f1b4427968d477dde51463da499125e5ed2dc57cde5c4900b4c9"},"chapter":"第4章 在线信息：访问、搜索与交换","content":"第4章 在线信息：访问、搜索与交换\n\n引 言\n\n据估计，截至2010年，数字世界的信息量已达1.2ZB，或者说1200万亿GB(Gantzand Reinsel,2010)。从这个角度来讲，莎士比亚的全部著作所占存储空间仅为0.5GB。一辆装满书籍的皮卡仅需要1GB的存储空间。就连世界上最大的图书馆美国国会图书馆的所有纸质藏品也只需要1万GB(Williams，未注明出版日期)。与这些数字形成对比的是，网上的可用信息量显然要比人类所知的任何信息库里的信息多得多。\n\n在本章中，我们将探讨人们如何利用互联网来满足各式各样的信息需求。首先，我们将分析信息访问如何随着互联网的兴起而改变。其次，我们将讨论人们如何通过这个信息海洋找到他们实际所需的信息。最后，我们将指出，既然有如此多的可用信息及高级搜索工具，人们为何仍然要在网上向他人索求信息，以及是如何求助的。\n\n访问网上信息\n\n20世纪90年代初，当互联网上的信息量开始飞速上涨时，许多人预言“信息高速公路”将革命性地改变社会的几乎各个层面，提升我们的教育体系及信息访问(Gore,1991)。有人曾将互联网与纸质出版物的发明相比较，认为信息扩散将比以往更快速、也更便宜(Goldsmith,as quotedin Katz andRice,2002:2)。现在，距离互联网的兴起已过去了几十年，我们的信息访问是否得到提高了呢？\n\n58\n\n79","previous_page":102,"next_page":104}