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Course Overview & Exploring the Internet

Course Overview & Exploring the Internet. Week 1 LBSC 690 Information Technology. Agenda. Why study information technology? Course description and syllabus Seven uses of the Internet Computing at UMCP. Why Study Information Technology. Doing a better job in your profession Help clients

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Course Overview & Exploring the Internet

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  1. Course Overview &Exploring the Internet Week 1 LBSC 690 Information Technology

  2. Agenda • Why study information technology? • Course description and syllabus • Seven uses of the Internet • Computing at UMCP

  3. Why Study Information Technology • Doing a better job in your profession Help clients Develop new services • Affecting the social impact of these technologies education and the web digital libraries ecommerce and the web • Fun

  4. Course Goals • Learn to use common software tools • Solve practical problems • Evaluate the role of information technology • Develop a personal plan for further study • Understand computers and networks (building a better “mental model” of how information technology works). (go browse course web pages)

  5. Instructional Approach • Readings • Provide background and detail • Class sessions • Provide conceptual structure • Electronic online provided in class • Slides and videotapes available • Homework, lab sessions, project • Provide hands-on experience

  6. Course Organization • Master the tools relatively early • Internet, word processors, spreadsheets, databases, programming, multimedia • 2 readings and one homework each class session • Apply the tools towards the end • Group work, library automation, educational computing, social issues, digital libraries • 2 readings each week and the term project

  7. Some Other Good Things to Do • Consider aITs courses for background • Work ahead • Ask questions about readings • Give us feedback • Think about a project soon • Ask for accelerated work if you can handle it (we’re looking to GRAs, web designers, researchers, etc.)

  8. Course Materials • Textbook • Oakman, The Computer Triangle2nd edition • Supplemental readings • Course packet available from IDSC • Daily access to a networked computer! • A few 3.5 inch floppy disks

  9. Fall 96 LBSC 690 Grades

  10. Observations on Grading • Exam scores are very important • The final is worth up to 10 homeworks • Moral: Use the homework to learn the material • Little things can make a B into an A • less than 1 point typically separates B+ and A-

  11. The Fine Print • Group work is encouraged on homework • But you must personally write what you turn in • Deadlines are firm and sharp • Allowances for individual circumstances are included in the grading computation • Academic integrity is a serious matter • No group work during the exams! • Don’t discuss exam until the completion deadline is past

  12. Breaks • 10 minute break after the first hour • 5 minute break after the second hour • No sodas or food in class the teaching theater

  13. Seven Uses of the Internet • Telnet • Email • Finger • Web (HTML/HTTP) • File Transfer Program (FTP), downloading • Newsgroups • Talk, IRC

  14. Describing Internet Applications • Who participates? • Person-person, person-machine, machine-machine • How many participants? (one other, many) • Directionality? (one-way, two-way) • Authentication? (authenticated, unauthenticated) • When? (synchronous, asynchronous)

  15. Networking Concepts • Understand the basic service as much as possible • Networked vs. Stand-alone • Clients and servers • UNIX versus PC/MAC • (more in 2nd class session)

  16. Telnet • Two way, computer-person, authenticated • Gives you a login on another computer • Use telnet to read your email from wam.umd.edu • Terminal emulation (VT-100) protocol allows only text • The pine email program is designed for VT-100 • X Windows extension adds graphics • WAM X-terminals available in CSS 4352 • Usage: from “run window”

  17. Electronic Mail (email) • Person-person, one-one, asynchronous • Pine on WAM is easy to use • Eurdora is ok if you always use the same computer • Mailing lists provide one-many capability • 690 mailing list is lbsc690@majordomo.umd.edu • Anyone can send to that list

  18. Email Addresses • userid@machine+domain • (e.g., oard@glue.umd.edu) • Machine names are like postal addresses • Most general part is at the end (.edu, .com, …) • Most specific part is at the beginning (glue, …) • Your userid (login name) is widely known. Protect your password

  19. Finger (find user name and activity from user id) • Find a name given an email address • finger rba@glue.umd.edu • other “white pages” services

  20. Web Pages • One way, computer-person, unauthenticated • Uniform Resource Locator (URL) • Protocol http: (HyperText Transfer Protocol) • Machine/Domain //www.clis.umd.edu • Port (implicit) port 80 • Path /academics/courses/fall99/690/ • File (implicit) index.html

  21. Finding Web Pages • Bookmarks • Useful if you have been there before • Access by category • (e.g., http://www.yahoo.com) • Limited to things processed by hand • Access by content - search engines • (e.g., http://www.altavista.com) • Broad coverage, but lots more trash • No really good search engines yet

  22. File Transfer Program (FTP) • Two way, computer-computer, authenticated • Used to move files between machines • Better than carrying a floppy disk around • Use FTP to send class notes from here to home • ftp raven.umd.edu • Unauthenticated version • Userid “anonymous” provides public access • Web browsers provide one-way anonymous FTP • Usage: Command line

  23. Net (USENET) News • Person-person, many-many, asynchronous • Similar to a large set of mailing lists • Hierarchical organization • Most general appears first (comp., soc., …) • Most specific appears last (rec.aviation.military) • Organized by site rather than by individual • No need to “sign up” for a newsgroup • Reading news - • www.deja.com • pine (wam mail reader)

  24. Talk/IRC • Synchronous, authenticated • Talk - connect to one other person • IRC - connect to many other people

  25. Computing at UCMP • Open Labs (IBM, Mac, Unix) • HBK 2101 (open lab), HBK 2108 (CLIS only) • PG2 and HBK Basement: 24 hr WAM labs • Need an aITs “pay for print” account • Dial-in access (Unix only) • College Park (301)209-0700 (3hr)/864-2087(15min) • Baltimore (410)962-88865(3hr)/962-8867(15min) • WAM userid and password required

  26. Homework • Preliminaries (ungraded) • WAM account, print account, email forwarding • Email (use “pine” which is the wam mail interface) • Listserve/Majordomo • World-Wide Web • USENET News • FTP

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