MD 240 Network Computing: Discovery, Communication, and Collaboration

1. MD 240Network Computing: Discovery, Communication, and Collaboration

2. Agenda The Work World Without the Web Background on Networks Discovery Communication Collaboration Applications of D, C & C: Distance Learning

3. The Work World Without the Web

4. Pre-WWW Work EnvironmentDiscovery, Communication, Collaboration Meet with someone face-to-face, ask them a question (if you can catch them when they�re in) Library - travel there and physically search Write a letter, put it in an envelope, mail it Phone Fax Travel to meetings �Networking� meant �Let�s have lunch sometime!�

5. Pre-WWW Work EnvironmentDiscovery, Communication, Collaboration Downsides Time-consuming Lots of travel required Slow physical delivery � 2-5 days via USPS Inefficient, difficult work � physical search Expensive � required extra Sometimes travel expenses were misused for fun Upsides Social contact � relationships Rich human-to-human communication

6. The Vision Discovery Low cost/no effort Very flexible Search and find by �content� or �terms� Semantic search by �context� or �meaning� Document-to-Document Linkages One-way Two-way Communication/Collaboration Minimal travel � low cost Maximum flexibility and functionality If traveling, you can connect to it and use it wherever you are

7. The Visionaries Vannevar Bush - 1945 vision of machines for information storage and retrieval, research dissemination Project Xanadu - 1960s - present two-way inter-linkages between documents relationships between information in multiple documents Tim Berners-Lee - 1989 WWW proposal to CERN Hypertext Transfer Protocol (http) � a simpler system to �get� and �put� documents for storage and retrieval The Semantic Web � a next generation WWW he is developing now

8. Background on Networks

9. The Internet