Shaastra 3rd day ( my second entry to shaastra)

This day some more encouraging because I could see open house ( means - all departments exhibit their labs and explain courses, tools they are using)

Labs :
Mechanical lab:
This was a good experience for me to mechanics. They have explained the power steering mechanism, testing of a braking system ... etc
Electrical Engineering :
They are some more active in IIT. I could see some good projects as well as posters of different technology like semiconductor, optics ..etc.

Projects:
1. Image processing , QPSK,noise addition, transmission and receiving
2. Sensing the pressure of a diaphragm (which is pulsating) inside a bucket of water,reading the data for plotting graph ,measuring diameter variation
3. Optics
4. Semiconductor technology explanation

companies sponsoring to them : benchmark Tenet

Computer Science:

I have seen
1. FPGA lab( Altera board, VHDL program burning, quartus( forgot name) software )
2. Robot show ( laptop controlled wheel chair)
3. one SRM student explained me one telos board
Actually the board was connected to USB of Linux Os CPU. Using 'make' command he burnt the program to the board. The program is to read temperature and humidity of the room. Interesting stuff is, the board was connected to similar four boards at different places by wireless. They were also reading temp and humidity. He set an apache and mysql to display the current and last 10 set of informations.

IBM person talk
cell processor, ibm semiconductor areas...etc

WANT 2 FLY AUTOMATED
This was a project demo of IITM students. The project designed by different (electronics and aerospace) department students in IIT. Their coordination,programming and mechanical skill is really amazing....

Shaastra 2008 (Second ENTRY to IITM)

IITM Shaastra 2008 was a good as well as bad experience to me. With out knowing the schedule ( was aware of FOSS conference ) and location of programs at 1 o clock , I entered in the IITM. But the programs were going on 2.5 km inside from IIT entrance gate. Walked through out the way, that had given chance to enjoy the beauty of IITM campus (even temples are there inside) .

Shaastra's beauty
Big big companies are sponsoring to this tech festival. L&T infotech,google,HSBC, GREDGE....etc. When I reached Elephant circle ( Gajendra circle), had seen big,big malls – one for Indian army, another for winergy ( wind to electric energy conversion) .
Talks, puzzles, conferences, workshops ( haven't seen ) all very standard programs.......

Shaastra's Bugs,
But I haven't seen the electronics, electrical,computer science or civil engineering IITM students projects or experiments exhibited in the ground. No project exhibition like mini projects or final year projects are less ( may because of first day ) or not there . Hardly you can see those stuffs. Then I understood, in that case GECT ECE's 'Quintessence ' or 'Insignia' (CS program) are giving more importance to exhibition of projects. In this particular thing the contribution of IITians to Shaatra was less. That is really really sad thing.

I think, IITians are more concentrating on entrepreneurship or business type stuffs... that also good . But IIT is famous because of technology, science and BRAIN.... not that much in business. But IIT can develop that too.... good. But only that, is bad.

Events participated.
Meanwhile got a chance to listen one RTI officer talk. That was really inspiring, as well as I wondered these type officers are there in Indian government. After having lunch and tea( very costly, don't know what the time was !!), wandered here and there without knowing what to do. Because, don't know the schedule... what program? which auditorium ? ...CLT,ICSR,DOMS.....etc. I enquired about the program schedule ... But I didn't get ( asked two places. First person direct me to registration people sitting place in IIT ground. Second person didn't care me that much). Really I feel bad.


FOSS Debian

Finally at the end of the day , I got FOSS Debian conference taken by Kapil ( http://www.imsc.res.in/~kapil/). Don't know more about his background. But he studied mathematics and now addicted in debian as well as in FOSS. He explained about patch and diff. I didn't get more( thats my problem).But he had started a Ubuntu vs Debian fight...funny moments.
The words that strike while listening.
1.ar xv /var/cache/..... / 20.4.somfile.db
2.flpsed -0.5
3.quilt push
4.quilt remove
5.fakerrout
6.dkpg -buildpackage
7.gpg

Packages overview for Kapil Hari Paranjape

http://qa.debian.org/developer.php?login=kapil@debian.org#par

And last when I looked into my watch, the time was 7.30pm. I knew that, “ I will miss the workshop on 'hacknight' in late night( 10.30pm to 'overnight' - no end time -) ' . No other way , have to return.

Electric Field And Electro static potential

Electric field is a vector quantity.It will determine how much amount of force getting for a unit charge due a Q amount of charge in space. And it is a vector quantity also. We need x,y,z vector components to determine the E vector. But electro static potential is the Potential energy of a charge to bring from infinity to a point in space.

Interesting thing, it is constant for a particular distance surface from the charge. What ever way we reach to that point the Electrostatic potential will be constant.
Electrostatic potential depends only on the radial distance from the charge.So depends only on one quantity

And from ELECTROSTATIC POTENTIAL we can determine the value of E which is vector (depending 3 components x,y,z)


These calculations and derivation I have studied in Btech days itself.But I didn't get the advantage of these ELETROSTATIC potential.

Gradient chapter:http://www.nptel.iitm.ac.in/video.php?courseId=1009&sub=Electrical&sem=Semester%204

GCC online documentation

You will get wonder if just see the index page of online documentation of GCC ( GNU C Compiler).
Hardware model and configuration is amazing. http://gcc.gnu.org/onlinedocs/gcc-4.3.2/gcc/index.html#toc_G_002b_002b-and-GCC

ascentengineers...

ascentengineers -----> Very interesting to see their work( http://ascentengineers.org/ ) and the way they are generating their business. I believe that they can be succeed in their business with electronics and free software . Because the market for these two are growing very fast in kerala. They found out their first customers as the college students. Giving consultancy to them .... is really a business.

I find that these ascentengineers are very young. And the courage they taking is really amazing.

computer graphics is not as simple as I expected

I have seen video from National Programme on Technology Enhanced Learning about COMPUTER GRAPHICS. I confused that whether I was hearing a Mathematics class or computer graphics. Real mathematics is used to map bits from image to CRT( screen).

see link

computer graphics ... videos

GATE EC2003 question

Ans :
Number of Mesh = B - N + 1 where B = No of Branches
N = number of Nodes
Node equation = N - 1
where N = number of Nodes

here B = 7 , N = 4

so minium number of equation need to analyze the circuit is = N - 1 = 3

Qu(2):

The Laplace transform of of i(t) is given by
I(s) = 2 / s(1+s)
As t --> infinity, The value of i( t) tends to


Ans:
Inverse of I(s) ,
I(s) = 2/s -2/(1+s)
i(t) = 2 -2(e^-t) because L(1) = 1/s and L(e^-t .1) = 1/(S+1)
As t --> infinity ,
==> i(t) = 2 -2/(e^infinity)
==> i(t) = 2 - 2/infinity
== > i(t) = 2 because 2/infinity is zero

This is the answer I got. I am not sure about 2/infinity . ,,...

i don't know these answers are correct or not .. I didn't get key for GATE these question.

DIGITAL SIGNAL PROCESSING

I become a fan of Prof. S.C. Dutta Roy .....if you hear these videos then you will reach a new world. See some beautiful lectures ..

Brief Technical Biography of S C Dutta Roy

S C Dutta Roy , a Ph D from the Calcutta University, is currently an INSA Senior Scientist at the Electrical Engineering Department, IIT Delhi, where he served as a Professor for more than three decades. He has also held the positions of Head of the Department and Dean of Undergraduate Studies at IIT Delhi, and Visiting faculty positions at the University of Minnesota, USA ; University of Leeds, UK ; and the Iowa State University, USA. His research interests are in signal processing – analog as well as digital, and he has published extensively in IEEE, IEE and other professional journals of repute.

Professor Dutta Roy is a Fellow of the IEEE, the Acoustical Society of India, the Systems Society of India, and of all the Science and Engineering Academies of India, and is a Distinguished Fellow of the Institution of Electronics and Telecommunication Engineers (IETE), India. He has served on the Editorial Boards of a few IEEE and other prestigious international journals and all the national journals in his field. He received several prestigious national awards, including the Shanti Swarup Bhatnagar Prize, the Vikram Sarabhai Award and the Pandit Jawaharlal Nehru Award.