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Information Revolution and Education

Prof. M. Kostic Mechanical Engineering NORTHERN ILLINOIS UNIVERSITY. Information Revolution and Education. Nothing is going to be... … the same again !. Information Facts & Opinions , also …. … Power (Influential Info) … Wisdom (“Purified” Info) … Expertise (Applied Info)

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Information Revolution and Education

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  1. Prof. M. Kostic Mechanical Engineering NORTHERN ILLINOIS UNIVERSITY Information Revolutionand Education • Nothing is going to be... … the same again !

  2. InformationFacts & Opinions, also … • … Power (Influential Info) • …Wisdom (“Purified” Info) • …Expertise(Applied Info) • …Knowledge (Systematic Info)

  3. New Technology does “doing” ... • I hear … and I forget ! • I see … and I remember ! • I do … and I understand ! NewTech offers effective opportunities for "doing" … like interactive multimedia simulation,what-if-analysis, real experimentation,etc (kids hate lectures, like TV, andlove interactive video games!)

  4. Let’s make it clear… New Technology can NOT and is NOT to replacethe traditional values and methods, ... but to enhance and complement them

  5. Will new-technologies replace/endanger traditional values, humans? -Definitely NOT, none of the previous technologies did! Should we use new-technologies to our benefits? - Definitely YES! However, the new-technologies shouldbe our Slaves (to serve), NOT our Masters (to control)

  6. Important...Yes, Yes, and Yes ... • "Location, Location, and Location!" …as Realtors said. • "Access, Access, and Access!", …as Internet nerds said. • "Time, Time, and Time!", …as Businessmen said. But … • "Quality, Quality, and Quality!” …as it really matters.

  7. Substance and quality are even more important with new technology than ever • NewTech produces quantity easily and fast… Cut/Copy-and-Paste (Ctrl_C/Ctrl_V) • Thus, quantity has no (little) value with NewTech • Poor quality may be BIG embarrassment(dummies will look dumber on the Web) • Creativity and QUALITY … is all that matters

  8. It should be clearly stated that... • use of new-technology should not be to promote the new-technology per se • but rather to use it to be more effective in achieving the objectives.

  9. Let’s Illustrate it with... ...Several Examples: NOTE:Every color coding and animation were done to enhance meaning and understanding Skip Examples

  10. Student-t distribution 50=P% n=N-1 t(n=9,P=50%)=? t Finite Statistics Also, P(n=9, t =0.703)=50% and n(P =50%, t =0.703)=9 n, P, t are related

  11. 2nd order system response: Magnitude ratio(M)versus frequency ratio (fr) with damping ratio (z)asparameter. z=0.01 fr=0.577forM=0.75andz=1 z=0.2 z=1 z=1 z=2 (0< fr<0.577) Dynamic error range from 1-d to 1+ d Correspondingfrequency range (0< fr<0.577)for the given Dynamic error range (d=±25%) 2nd Order Systemx=A sin(w t); y=B sin(w t-f)Input; Output M=B/(KA) Phase shift/lag (f) 1 fr =w/wn=f/fn

  12. N=4 terms, two non-zero/bumps N=11 terms, six non-zero/bumps N=155 terms, a half non-zero/bumps MathCAD Example:Representing a step/square wave with Fourier Series

  13. Data Acquisition - DAQ • DAQ boards: • Analog I/O • Digital I/O • Counter/timer I/O • Data Acquisition System Components COMPUTER with SOFTWARE: Control the DAQ board, process, store, and display data, as instructed by software program.Examples: LabVIEW application programs to acquire data, simulate instruments, and generate results, etc. SIGNAL CONDITIONING: Modify transducer signals to match DAQ board specs/ranges.Examples: amplification or attenuation, filtering, excitation, etc. TRANSDUCERS: Sense the measured quantities and change their properties or generate corresponding electrical signals.Examples: strain gage, thermocouple, accelerometer, potentiometer, etc. PLUG-IN DAQ BOARD: Measures (acquires), processes, stores, and generates signals, as instructed by software program.Examples: Analog and digital signals’ input and output, counters, timers, etc.

  14. COUNTER FLOW PARALLEL FLOW Cmin=min(CH,CC) T T HOT FLUID DT1 DTH DTH HOT FLUID DT DTmax DT1 DTLM DTLM DT DT2 DTC DT2 DTC COLD FLUID COLD FLUID dA dA A A Heat Exchanger Correlations

  15. Parallel branches Series branches Two-level discharge system

  16. URL Link File Link Samples from Prof. Kostic’sMEE 390 course : • Class Syllabus • Class Lecture Example Ppt • Homework Assignments (W/ Example Links) • MathCAD Example Ppt • Lab Handout Example (Strain Gages Etc.) • DAQ and Labview Example (Continue)

  17. Information revolution…… is happening so fast ...… practically in the ‘90s : • -Transistor 1947 • Int. Circuit 1958, 1st IC computer 1960 • Intel 8080 chip & Altair PC 1974 • IBM PC 1981, Apple Macintosh w/ mouse 1984 • First web browser-Mosaic 1993, Netscape 1994 • Windows’95 and its applications/IE4.0 1995/97 • …many of us have a lot of catching-up to do!

  18. … in 1997 • Pentium II microprocessor chip…has 7.5 million transistors and can process500 million instructions per second, $500! • Full Britannica Encyclopedia on CD …plus multimedia and search engine… inWal-Mart, $99-$20 rebate ! • Think…about this!

  19. NewTech everywhere…… Education including • Internet and Interactive Multimedia • It’s here and…… it’s ahead of us… • Nothing is going to be... … the same again !

  20. It is not wise ... … to underestimate • Internet Information P o w e r

  21. Keep thinking...about this! • Nothing is going to be... … the same again !

  22. In Internet Information Age...… we have to“jump” from Pencil#2 to PC

  23. … to the White Board... ...where the limit is our creativity From Black, to White…to Electronic From the Black Board... … to Electronic Board

  24. NO SPEED LIMIT No Limits … The Future Belongs To… … Whoever Gets There First

  25. http://www.kostic.niu.edu • Remember ! Please, do NOT … … underestimate • Internet InformationP o w e r

  26. You may contact Prof. Kostic at: mailto:kostic@niu.edu or on the Web: http://www.kostic.niu.edu

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