Information Revolution and Education
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Transcript Information Revolution and Education
Information Revolution
and Education
Nothing is going to be...
… the same again !
Prof. M. Kostic
Mechanical Engineering
NORTHERN ILLINOIS UNIVERSITY
www.kostic.niu.edu
© MCMXCIX* Prof. M. Kostic
Information
Facts & Opinions, also …
… Power (Influential Info)
… Wisdom (“Purified” Info)
… Expertise (Applied Info)
… Knowledge (Systematic Info)
www.kostic.niu.edu
© MCMXCIX* Prof. M. Kostic
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, and
love interactive video games!)
www.kostic.niu.edu
© MCMXCIX* Prof. M. Kostic
Let’s make it clear…
New Technology can NOT
and is NOT to replace
the traditional values and methods,
... but to enhance and
complement them
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© MCMXCIX* Prof. M. Kostic
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
should be our Slaves (to serve),
NOT our Masters (to control)
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© MCMXCIX* Prof. M. Kostic
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.
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© MCMXCIX* Prof. M. Kostic
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
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© MCMXCIX* Prof. M. Kostic
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.
www.kostic.niu.edu
© MCMXCIX* Prof. M. Kostic
Let’s Illustrate it with...
...Several Examples:
NOTE:
Every color coding and animation were
done to enhance meaning and understanding
Skip Examples
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© MCMXCIX* Prof. M. Kostic
Finite Statistics
Student-t distribution
50=P%
n=N-1
t
t(n=9,P=50%)=?
Also, P(n=9, t =0.703)=50%
and n(P =50%, t =0.703)=9
n, P, t are related
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© MCMXCIX* Prof. M. Kostic
M=B/(KA)
z=0.01 and z=1
fr=0.577 for M=0.75
z=0.2
z=1
z=
1
z=2
Phase shift/lag (f)
(0< fr<0.577)
1
2nd Order System
x=A sin(w t); y=B sin(w t-f)
Input; Output
2nd order system response:
Magnitude ratio (M) versus frequency ratio (fr)
with damping ratio (z) as parameter.
fr =w/wn=f/fn
Dynamic
error
range
from
1-d to 1+ d
Corresponding
frequency
range
(0<
fr<0.577)
for the
given Dynamic error range (d=±25%)© MCMXCIX* Prof. M. Kostic
www.kostic.niu.edu
MathCAD
Example:
N=4 terms,
non-zero/bumps
N=11
terms,atwo
six
non-zero/bumps
N=155
terms,
half
non-zero/bumps
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Representing
a step/square
wave with
Fourier
Series
© MCMXCIX* Prof. M. Kostic
Data Acquisition - DAQ
SIGNAL
CONDITIONING:
Modify
transducer
signals
COMPUTER
with SOFTWARE:
Control
the DAQ board,
DAQ
boards:
PLUG-IN
DAQ
BOARD:
Measures
(acquires),
TRANSDUCERS:
Sense
the
measured
quantities
match
Analog
I/Ogenerates
to
DAQ
board
specs/ranges.
Examples:byamplification
process,
store,
and
display
data,as
asinstructed
instructed
software
processes,
stores,
and
signals,
and change
their
properties
or generate
corresponding
Digital
I/O
or Examples:
attenuation,
filtering,
excitation,
etc. to acquire
program.
Examples:
LabVIEW
application
programs
by software
program.
Analog
and
digital
electrical
signals.
Examples:
strain
gage,
thermocouple,
Counter/timer I/O
data, and
simulate
instruments,
and
signals’accelerometer,
input
output,
counters, timers,
etc. results, etc.
potentiometer,
etc.generate
Data Acquisition System Components
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© MCMXCIX* Prof. M. Kostic
Heat Exchanger Correlations
PARALLEL FLOW
COUNTER FLOW
T
T
TH
HOT FLUID
T1
T
TLM
T2
TC
COLD FLUID
dA
T1
UA Cmin=min(CH,CC)
TH
HOT FLUID
T
TC
T2
COLD FLUID
dA
A
Tmax
TLM
A
Tmean
c p ) H TH = (m
c p )C TC = CminTmax
q=
= (UA)(FTLM ) = (m
Rtotal
TH = TH ,in TH ,out
TLM =
TC = TC ,out TC ,in
1
T1 T2
U
TdA
=
;
UA A
T1
ln
T2
CH = (m c p ) H
CC = (m c p )C
Tmax = TH ,in TC ,in
Tmean = FTLM
Cmin = minCH , CC )
q
UA
Cmin
=
=
; NTU =
; = NTU ,
q
CminTmax
Cmin
Cmax Prof. M. Kostic
© MCMXCIX*
max UA
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q
Two-level discharge system
Parallel branches
Series branches
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© MCMXCIX* Prof. M. Kostic
URL Link
File Link
Samples from Prof. Kostic’s
MEE 390 course :
Class Syllabus
Class Lecture Example
Homework Assignments
Ppt
(W/ Example
Links)
MathCAD Example
Ppt
Lab Handout Example (Strain Gages Etc.)
DAQ and Labview Example
(Continue)
www.kostic.niu.edu
© MCMXCIX* Prof. M. Kostic
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!
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© MCMXCIX* Prof. M. Kostic
… in 1997
• Pentium II microprocessor chip…
has 7.5 million transistors and can process
500 million instructions per second, $500!
• Full Britannica Encyclopedia on CD …
plus multimedia and search engine
… in Wal-Mart, $99-$20 rebate
!
Think…about this!
www.kostic.niu.edu
© MCMXCIX* Prof. M. Kostic
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 !
www.kostic.niu.edu
© MCMXCIX* Prof. M. Kostic
It is not wise ...
… to underestimate
Internet
Information
P o w e r
www.kostic.niu.edu
© MCMXCIX* Prof. M. Kostic
Keep thinking...about this!
Nothing is going to be...
… the same again !
www.kostic.niu.edu
© MCMXCIX* Prof. M. Kostic
In Internet Information Age...
… we have to “jump”
from Pencil#2 to PC
www.kostic.niu.edu
© MCMXCIX* Prof. M. Kostic
From Black, to White…to
Electronic
From
the Black
Board...
… to
the White
Board...
www.kostic.niu.edu
… to
Electronic
Board
© MCMXCIX* Prof. M. Kostic
No Limits …
NO
The Future
Belongs
To…
www.kostic.niu.edu
SPEED
LIMIT
… Whoever
Gets There
First
© MCMXCIX* Prof. M. Kostic
http://www.kostic.niu.edu
Remember !
Please, do NOT …
… underestimate
Internet
Information
P o w e r
www.kostic.niu.edu
© MCMXCIX* Prof. M. Kostic
You may contact Prof. Kostic at:
mailto:[email protected]
or on the Web:
http://www.kostic.niu.edu
www.kostic.niu.edu
© MCMXCIX* Prof. M. Kostic
www.kostic.niu.edu
© MCMXCIX* Prof. M. Kostic