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World Wide Web Basics. Informatics Training for CDC Public Health Advisors. Points to be covered. Basic overview The Web as an information resource How to get around Examples of some useful pubic health sites Some tips. Overview - Internet.
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World Wide Web Basics Informatics Training for CDC Public Health Advisors
Points to be covered • Basic overview • The Web as an information resource • How to get around • Examples of some useful pubic health sites • Some tips
Overview - Internet • Computer networks linked through use of common software protocols (TCP/IP) • Applications • e-mail, remote computer use, transferring files • mail lists & news groups • interactive information delivery services • search tools
Overview - World Wide Web • Includes multi-media resources (sounds, pictures, video) • Accessed via “browser” software • Netscape Navigator vs. MS Internet Explorer • Documents linked through hypertext • Enables point-and-click navigation • Following links = surfing the Web
Glossary • HTML - hypertext mark up language • URL - uniform resource locator = web address • hypertext = hot link = link • (home) page - a single document/file viewed with a browser • may be several pages long • may have subsidiary & external links
How to get around • Browser window layout • pull down menus • control panel buttons • “location” box • Basic navigation • important buttons: back, home, go • Open, Home buttons • “Where am I?”
Anatomy of a URL • a URL tells you • where you are, and • something about what you’re looking at • http://www.specific.general.domain/name.html • US domains: gov, edu, org, com, mil, net • examples:http://www.doh.wa.gov http://healthlinks.washington.edu/nwcphp/
Home pages • Can be institutional or personal • Logical grouping of pages constitutes a web site • Pages may also link to other sites • May provide original, local information and/or compile links to other sites
Uses of a home page • For user • on ramp - convenient starting point • quality filter - links have been selected • organizer - can provide framework • For author • publication - dissemination • interactive communication or service medium • advertisement
Uncle Sam on the Web • DHHS, Public Health Service • CDC • http://www.cdc.gov/ • MMWR, WONDER, Prevention Guidelines, other databases and publications • NIH • http://www.nlm.nih.gov/ • NLM - MEDLINE and other databases • healthfinderTM • http://www.healthfinder.gov/
University sources • Healthlinks • http://healthlinks.washington.edu/ • BioSites • http://www.library.ucsf.edu/biosites/ • HealthWeb • http://www.ghsl.nwu.edu/healthweb/
MEDLINE • produced by National Library of Med. • bibliographic database • published, peer-reviewed research • broad coverage of health care • can now search free using PubMed & Internet Grateful Med • http://www.ncbi.nlm.nih.gov/PubMed/ • http://igm.nlm.nih.gov
Some tips • plug ins - helper applications • saving (downloading) files - where? • loading images - on or off? • printing - how big is that page? • source/page code - to learn HTML • file/page information