http://www.infotoday.com/searcher/jan02/block.htm

I often suggested to students that information is a lot like pizza — the hungrier you are, the more you eat. The more thorough your search needs to be, the more you need to search through all the available resources. This is my guess about what formats of information occupy what percentage of the total of information cumulated over the past 3 centuries. I believe documents produced by local, national and international governments over the centuries are the largest single source of information, followed by books and periodicals. Even with well over a billion pages, and adding sites at the rate of millions a day, the Internet still has a lot of catching up to do before it can compete. The remaining small segments include things like dissertations, conference papers, videos, movies, photographs, maps, databases, etc.

Each individual piece of the information pizza can be sliced even thinner. Even a tiny slice like magazines or journals can be subdivided into all the different databases that index or abstract them — Medline, ERIC, Biological Abstracts, Agricola. If you really want a thorough search, you need to check every likely itty-bitty slice.

These are the original rules of information, pretty much as I scrawled them and copied them off. They've grown a bit since then.

1. Go where it is.

2. The answer you get depends on the question you ask.

3. Research is a multi-stage process.

4. Ask a librarian

My Rules of Information的更多相关文章

  1. The Brain vs Deep Learning Part I: Computational Complexity — Or Why the Singularity Is Nowhere Near

    The Brain vs Deep Learning Part I: Computational Complexity — Or Why the Singularity Is Nowhere Near ...

  2. SAX - DefaultHandler

    org.xml.sax.helpers.DefaultHandler 实现了 org.xml.sax.EntityResolver.org.xml.sax.DTDHandler.org.xml.sax ...

  3. Data Types

    原地址: Home / Database / Oracle Database Online Documentation 11g Release 2 (11.2) / Database Administ ...

  4. Transact-SQL 数据类型转换

    Syntax   Syntax for CAST: CAST ( expression AS data_type [ ( length ) ] )     Syntax for CONVERT: CO ...

  5. [转]Using the Interop Activity in a .NET Framework 4 Workflow

    本文转自:http://msdn.microsoft.com/en-us/library/ee264174(v=vs.100).aspx This topic applies to Windows W ...

  6. modSecurity规则学习(三)——SecRule

    通用格式 SecRule VARIABLES OPERATOR [TRANSFORMATION_FUNCTIONS, ACTIONS]   阶段phase (1)request headers (2) ...

  7. Access control differentiation in trusted computer system

    A trusted computer system that offers Linux® compatibility and supports contemporary hardware speeds ...

  8. Implement Property Value Validation in Code 在代码中实现属性值验证(XPO)

    This lesson explains how to set rules for business classes and their properties. These rules are val ...

  9. XAF-在代码中实现属性值验证(EF)

    This lesson explains how to set rules for business classes and their properties. These rules are val ...

随机推荐

  1. C#如何判断我的程序已经有一个实例正在运行

    static class Program { private static Mutex mutex; /// <summary> /// 应用程序的主入口点. /// </summa ...

  2. 黄聪:HtmlAgilityPack,C#实用的HTML解析类简介

    HtmlAgilityPack是.net下的一个HTML解析类库.支持用XPath来解析HTML.这个意义不小,为什么呢?因为对于页面上的元素的xpath某些强大的浏览器能够直接获取得到,并不需要手动 ...

  3. 华人曾与IBM抗衡! 盘点已远去的IT巨头(转)

    [PConline资讯 ]从算盘到计算器,从大型机到个人PC,再到当今火热的移动终端和云计算,人类计算史已经走过了千年之久,现代IT计算领域也经过了百年浮沉.在世界工业领域,IT技术应该是诞生时间最短 ...

  4. ADF_Starting系列4_使用ADF开发富Web应用程序之维护User Interface(Part1)

    2014-05-04 Created By BaoXinjian

  5. 2016 Multi-University Training Contest 5 Two

    本文转自:http://blog.csdn.net/queuelovestack/article/details/52096337 题意: 给你两个序列A和B 问两个序列有多少个子序列一样 例如{1, ...

  6. 寒假学习unity的第一天

    1.在Assert中创建材质Material,可以为物体附上材质 2.实例化命令Instantiate(要生成的物体,生成的位置,生成物体的选择角度) 3.检测鼠标左键 if(Inhibitor.Ge ...

  7. OSTimeDelay(1)

    当OS_TICKS_PER_SEC=100HZ ,即每个时钟节拍10ms;如果想延时10ms而调用OSTimeDelay(1)是不行的,调用该函数至少要2个时钟节拍才不会因时间太短,调度跟不上而产生错 ...

  8. Eclipse UML插件Green UML、AmaterasUML

    一.Green UML插件 1.查看Eclipse版本 查看当前电脑上安装的Eclipse版本(Help-About Eclipse Platform),是3.3.2版本的. 2.查看相应插件版本 然 ...

  9. Gatling的进阶一

    转载:http://www.51testing.com/html/10/26810-852966.html 首先 抄袭一个Gatling的介绍 Gatling是一款基于Scala 开发的高性能服务器性 ...

  10. [ActionScript 3.0] AS3.0 调试出现安全沙箱冲突错误解决办法

    提示 *** 安全沙箱冲突 ***到 http://api.map.baidu.com/telematics/v3/weather?location=%E6%88%90%E9%83%BD&ou ...