Internet Research
Download as PPT, PDF•2 likes•980 views
This document provides an overview of internet search strategies, including the history and definition of key concepts like the internet, web browsers, search engines, directories, blogs, multimedia tools, and more. It also briefly discusses issues around internet politics such as viruses, freedom of speech, pornography, and copyright.
Internet Research
- 2. Advantages The ability to learn faster than your competitor may be the only sustainable competitive advantage. Peter Senge, The Fifth Discipline
- 3. Outline Background Browsers Search Engine Directory Blog Web 2.0 Internet Politics
- 4. Background
- 5. History
- 6. Definition of Net The Internet is the publicly accessible worldwide system of interconnected computer networks that transmit data by packet switching using a standardized Internet Protocol (IP). It is made up of thousands of smaller commercial, academic, domestic and government networks. It carries various information and services, such as electronic mail , online chat , and the interlinked web pages and other documents of the World Wide Web .
- 7. How big is the web? 56 billion static web pages are publicly-available on the World Wide Web. Another estimated 6 billion static pages are available within private intranet sites 200+ billion database-driven pages are available as dynamic database reports ("invisible web" pages) Google.com indexes 9.75 billion web pages.
- 9. Deep Web The invisible web, , a vast repository of information that search engines don't have access to, such as databases Private networks, called intranets, that are not actually hooked up to the Web Forms , like ColdFusion or CGI Password-protected sites , like a university library Sites that intentionally, for various reasons, keep their information from being indexed by search engine spiders
- 10. Today 200 Billion Only 50 Billion is static web Geogle only indexed 10% Daily Web Space increase 100,000 websites
- 11. Key Players Larry Page Co-Founder & President, Products Sergey Brin Co-Founder & President, Technology
- 13. Sir "Tim" John Berners-Lee the inventor of the World Wide Web and director of the World Wide Web Consortium
- 14. Search Strategy
- 15. Search Strategy Choose appropriate key words b. Select right tools c. Evaluate Information
- 17. Sharing Interesting sites? Your frustration? Questions ?
- 18. Your needs? 1. What information you want to have right now? A.________________________ B. _______________________ C. _______________________
- 19. Tools Search engine Meta Search Specialized search engine Directory Specialized Directory – academy, alexa Blog RSS Torrent
- 20. Tools for Multimedia Sound - Podcast TV – Online TV Photo – flickr Invisible Web
- 21. Browser
- 22. Definition A web browser is a software application , technically a type of HTTP client , that enables a user to display and interact with HTML documents hosted by web servers or held in a file system .
- 23. HTML & HTTP In computing, HyperText Markup Language ( HTML ) is a markup language designed for the creation of web pages with hypertext and other information to be displayed in a web browser . HTML is used to structure information — denoting certain text as headings, paragraphs, lists and so on
- 24. Browser - functions Mozilla Firefox – tab, extensions Internet explorer – high security Opera – sessions, ligh
- 28. Browsers Internet Explorer (decoder) Bookmark/Favorite Home Page (Google, Yahoo) Back Forward Refresh (7 seconds) History Text size Encoding
- 29. Search Engine
- 30. Definition Definition: A search engine is a searchable database of Internet files collected by a computer program (called a wanderer, crawler, robot, worm, spider).
- 31. search engine Spider: Program that traverses the Web from link to link, identifying and reading pages Index: Database containing a copy of each Web page gathered by the spider Search and retrieval mechanism: Technology that enables users to query the index and that returns results in a schematic order
- 32. Single Google.com Vivisimo.com Meta All the Web Dogpile Internet search engines can be the most useful--or useless--tools on the Internet Search Engines
- 40. Boolean Search Add +ABC Minus -ABC Default DEF OR ABC Exact phrase “ABC” Wild card ABC* Synonym ABC~
- 41. Boolean OR 33702660 NOT 81497 AND 1677
- 42. effective habits: Study Search Engine Help Files Use The "Three Strikes" Rule Don't Play Favorites Use Specialized Search Sites Keep your book mark well classified
- 43. TEST Use google to find the three items you have listed down
- 44. Directory
- 45. pick by human hierarchy small portion of cyberspace low noise Characters
- 47. General Directory Yahoo - largest collection of topical collections Google Web Directory – using the Google link ranking technology; Google search results are also included with directory results Open Directory – volunteers to pick the web pages
- 50. Specialized Dir About - large collection of topical collections gathered subject specialists Alexa – List down the highly ranked websites 100times – free education sites for business studies
- 54. INFOMINE - large collection of scholarly Internet resources collectively maintained by several libraries, including those from the University of California The Internet Public Library - large, selective collection from the University of Michigan The WWW Virtual Library - highly respected guides to many disciplines sponsored by the W3 Consortium
- 56. TEST Find directories that related to your profession
- 58. Blog
- 63. Blog http://www.tehnorati.com http://www.bloglines.com http://www.blogger.com http://blog.iht.com http://www.jeffooi.com
- 64. Mailing List/Groups Info Exchange
- 67. Multimedia
- 68. Web 2.0 Encyclopedia http://www.wikipedia.org Photo http://www.flickr.com RSS http://www.feedstar.com
- 69. TV Power Point Slide show Online http://www.slide.com Online TV http://wwitv.com http://twit.tv http://websearch.about.com/od/imagesearch/a/freeonlineTV.htm
- 73. Podcast Sound
- 75. Podcast Podcasting is a term coined in 2004 when the use of RSS syndication technologies became popular for distributing audio content for listening on mobile devices and personal computer
- 81. Web Based Mailing List Google Groups Yahoo Groups MSN Groups LIST : SIPI, Dale Carnegie , TRDEV
- 82. Benefits Ask questions Sense of belonging International exposure Contribution Networking
- 83. Dangers Lurk first Beware of the audience Jokes Use emoticon
- 85. Web Evaluation Techniques Before you click to view the page... Look at the URL - personal page or site ? ~ or % or users or members Domain name appropriate for the content ? edu, com, org, net, gov, ca.us, uk, etc. Published by an entity that makes sense ? News from its source? www. nytimes .com Advice from valid agency? www. nih .gov/ www.nlm. nih .gov/ www.nimh. nih .gov/
- 86. Web Evaluation Techniques Scan the perimeter of the page Can you tell who wrote it ? name of page author organization, institution, agency you recognize e-mail contact by itself not enough Credentials for the subject matter ? Look for links to: “ About us” “Philosophy” “Background” “Biography” Is it recent or current enough ? Look for “last updated” date - usually at bottom If no links or other clues... truncate back the URL http://hs.houstonisd.org/hspva/academic/Science/Thinkquest/gail/text/ethics.html
- 87. Web Evaluation Techniques Indicators of quality Sources documented links, footnotes, etc. As detailed as you expect in print publications ? do the links work ? Information retyped or forged why not a link to published version instead ? Links to other resources biased, slanted ?
- 88. Web Evaluation Techniques What Do Others Say ? Search the URL in alexa.com Who links to the site? Who owns the domain? Type or paste the URL into the basic search box Traffic for top 100,000 sites See what links are in Google’s Similar pages Look up the page author in Google
- 89. Web Evaluation Techniques STEP BACK & ASK: Does it all add up ? Why was the page put on the Web ? inform with facts and data? explain, persuade? sell, entice? share, disclose? as a parody or satire? Is it appropriate for your purpose?
- 90. Try evaluating some sites... Search a controversial topic in Google : "nuclear armageddon" prions danger “ stem cells” abortion Scan the first two pages of results Visit one or two sites try to evaluate their quality and reliability
- 92. Internet Politics Virus Freedom of speech Porno graphy Company policies Copy right
- 93. Internet Politics Virus data loss due to viruses is still less than 10% 2 hours to clear up, a major infection will probably take 5 days What is the consequences?
- 94. Internet Politics Virus One of the first major attacks in the United States occurred in 1988 with a virus created by a Cornell University graduate student. It jammed more than 6,000 computers across the country, shutting down some networks on what was then a much smaller national computer network.
- 95. Internet Politics Antivirus Rules For The Users 1 . Never accept disks , programs or data files without checking them first 2. Never use software , demo's or other software with doubtful origins 3 . Always scan any program or document download onto your machine before you open or read it, this includes attachments received via e-mail 4. If you lend a disk to anyone, check it when you get it back. BEFORE you use it again 5. Keep your Antivirus software up to date
- 96. Internet Politics Freedom of speech Abide to non-disclosure agreement. In discussion group, lurk before you participant. Do not use four letter words Use emoticon for international communication
- 97. Internet Politics Pornography It’s a big NO NO Why it is not allowed? If allowed, what would be the negative consequences? If accidental, leave straight immediately
- 98. Internet Politics Company policies Internet Users Policy (IUP) Previous experience
- 99. Internet Politics Copy right Three types of software: public domain, freeware and shareware Give credit to authors electronics, verbal or written forms Check virus Consult IT or HR if not clear