Sunday, October 31, 2010

Award to Prof.Sadagopan by Rotary Club and Excellent Speech from him.

It is another feather in Prof.Sadagopan’s cap. Yes, On 31-10-10 our honorable Prof.Sadagopan received an award called “Vocational Excellence Service Award” by Rotary Club Bangalore. This award is given to a person who has done excellent work in his/her profession.
When Sachin Tendulkar was given “Player of the year” award.. I wonder “How can a player of the cricket forever be given a Player of the year award!!!” The same way a person who has been providing excellent service to the society for more than three decades is getting an award for service. Nevertheless it is my privilege to attend this function.
When I entered into the Trinity Isle hotel , just Prof.Sadagopan and Mrs. Chandra Sadagopan entered. Suddenly a set of people surrounded him. Prof started introducing people
1) Mr. Manish : IITK alumni , working in Infosys
2) Mr.Shobhu : Working in Oracle , Volunteer for many good non-profit organizations
3) Mr.Raghuram : Alumni of IIITB , Excellent photographer (GTNexus)
4) Prof.R L Kashyap : He was Professor of Prof.Sadagopan in Purdue university . the work from these two

and so many …
Rotarians talked about Rotary club. I was a Leo club secretary which is a child club of Lion. But here first time I have seen people from great background attending this function. Of course we know the reason !!.Then a lady read the biography of Prof (Citation) and it was pleasant to the ears.After some times our Prof started talking. The below speech may not be exactly the same what he has given but its interpretation of mine .. He has spoken great things in polite way .. we can not express politeness in words but he expressed in his speech !!
All italicized words are my comments!!

There are three excellent points covered in his speech


When he was in child hood, his school teacher “Srinivasa Iyengar” use to punish him if his handwriting was not good. This had helped him and still helping him a lot with respect to perfect writing. He said he writes article or letter without scratching and if it happens to scratch he writes the entire article from the beginning

Some of the achievements
1) He wrote his PhD thesis which has more than 100 pages without scratching.
2) He wrote an article to TOI in 19 minutes


When his Prof at Purdue university gave him two choices for the project work
1) PhD work in the existing project which was almost frozen but it would provide PhD in short time
2) PhD work – Prof.Sadagopan himself should come up with an idea but it would take time.
But Prof.Sadagopan, to our expectation he had chosen the 2nd one and completed the PhD in very short time
Prof.Sadagopan mentioned that Painting a great thing is always interesting and if we paint from clean slate is further more interesting.
Please note: Our Prof.Sadagopan completed his MS + PhD in 3 years.. 1976-79


In 1997-1998 there was a big revolution in the IT Sector, Government was in the phase of thinking about IIITs . That time our prof wrote an article regarding IIIT. Government asked him to take responsibility for Indian Institute of Information Technology.He has been leading an organization with great employees (Profs) and delivering good products (students - us ).

Lot more to tell in this because he has described the meeting with government officials well. I am unable to describe as how he did , so I left it. If you want to know more please call me #9008855227
He ended his speech in a royal way.


At the lunch session I spent quite a time with Mr.Millind , Rotarian Venki and so on.. every one talked about prof speech. Rajagopal was also with me but I missed Karthik.
I should always keep in mind if we quantify his personality and my personality
|his personality – My personality | is huge value.Prof.Sadagopan is the nucleus we are all electrons moving around him.
I know he would not like if we tell something great about him , but I generally blog what ever I feel.After this function I got motivation and wanted to work for reaching great heights.(Of course IIIT-B has given good learning practice.)

Overall the function was organized well and grandly by Rotary club
This is an unbiased blog . So I wrote this as a common man and not as a alumni of IIITB.


Thursday, October 21, 2010

Intuitive meaning of Wavelength , Frequency and Velocity Relation -- Jithendrian

This is the one i consider as my best !!
As everyone knows velocity of a wave is the product of frequency and wavelength. The derivation for this is simple and given in so many text books using wave number. But I am totally confused how it can be intuitively and physically imaginable.First of all how to relate wavelength and frequency !! After a long try I came up with some analogy which will help you in thorough understanding of wave equations.Below derivations and concepts are 100 % my own work .. I am not telling this to boast myself but to tell the originality. So please feel free to comment/give feedback

Let us consider A and B are the source and destination . A is a gun and B Is the target
Length of the bullet = l
Distance between the gun and the target is d
Number of bullets shoot on the target = n
t be the time taken for the first bullet to reach the target as well as the total time taken for shooting n bullets

Assume that the bullets are shot continuously , n bullets with length l

Now the distance d can be expressed as

Another way to express d
Let v be the velocity of the bullet
t be the time taken to reach the destination

Equating (1) and (2) we get

We know when a first bullet reaches the target at time t there are n bullets are shot , number of bullets shot per second (k) is

Now put the equation (5) in (4)

Now come back to our electromagnetic wave (assume waves are as packet moving in a single path and not as particles )

Wave is like a bullet
Number of bullets shot per second (k) is the number of oscillations/vibrations or repetition of the waves per second which is nothing but frequency (f)
The length of the bullet (l) is the length of the wave (lambda)
Velocity of the wave (c) is the velocity of the bullet (v) Gun (trigger) acts as antenna finally interchanging the above form to

Substituing every thing(7,8,9) in equation 6 we get

Which is the bread and butter equation for a wireless engineer!!!

P.S all equations and pictures are made by me without copying :) using pptx and converted to image. If anything is not clear please let me know

Sunday, October 17, 2010

Spritual Wave - my experience in two weeks !!!

One fine day I was searching for 'dasavathara stothram' , the great google search engine directed me to website then I started chanting some of the slokas , then I was curious to know the meaning of the slokas. I got a websit which helped to know the meaning. I was totally impressed by the way swami desikar presented the slokas .. I could not even read the slokas effectively , it was very difficult !! According to me swami deshika is 'ring finger ' .(Kalidasa is called as kanista angulya , it means little finger. in those days when some one asked to count number of sanskrit pundits/poets , first count is kalidasa using litte finger but people could not name after kalidasa thats why our ring finger name is anamika - no name !!) From the day I got inspiration from desikar I was eager to know about him a lot . Fortunately with in two to three days I got an opportunity to visit Melkote where swami desikar and ramanujar had spent significant number of years !! Thanks to sadagopan sir and chandra mami (Mrs.sadagopan sir) for this. It fueled my curiousity. Then I decided to go to Kanchipuram to learn about his history and gather plethora of information(of course we can do it in net) but I know some scholars in kanchipuram who can tell about him crystal clearly.( Source of Melkote picture : from my senior Mr. Raghuram )
My brother is a great devotee of Swami ramanujar and Swami desikar . In my home u can see many photos of these two personalities.I am not as spritual as him. I generally tell slokas when I am forced to.I came to chennai on Saturday morning. (16/10/2010). He told me to take bath and asked me to participate in saraswathi pooja. In the pooja table some of desikar sloka books were placed. I wondered and asusual without showing interest too much I started keeping kumkum and manjal to the books for pooja. My mother told me those books (desikar books) were kept to tell slokas. I was perplexed and as many people know nowadays I have started questioning more !! so i asked her 'generally we tell slokas to saraswathi and I heard some where that hayagrivar is the teacher for saraswathi , but why should we tell desikar sloka '. I thought myself when people asked me to do ganapathi pooja I chanted purusha suktham in between to fill the gap !!! Like that my brother wanted to tell desikar sloka. But for the clarification I asked her again. She replied 'today puratasi thiruvonam'. Then I realized 'Oh .. Today is our swami desikar's thirunakshathiram' . My brother and I started 'saraswathi pooja' .. Dasavathara stotram , Sudharshana astakam etc.. and ended with desika mangalam. All reminded me , my school days , I asked my mother to go for 'THUPUL' where swami was incarnated. My mother was very happy because according to her I am the one of the most un-spritual personalities who never take strain to visit temples. Since my brother had some work in office he could not come. I and my mother started for Kanchipuram.

I am always excited when I go to kanchipuram because It is ambi-cultural environment (i.e we can feel both modern and ancient entities there ). We went to our perimmas home. Evening we went to Varadharajar koil. Wow !!! Mamas,boys in veshtis, panchakajam , 12 thirumans , kudumi and mamis,girls in madisar , saree , half sarees !! That environment conveyed me that modern Indianization is at the peak !! I participated in swami desikar uthsavam. I joined my two hands and prayed Swami desikar and he was doing the same to Varadarajar and Thayar who were opposite to him. I hope principle of reflection should hold good here too (means reflecting my prayer to varadarajar by desikar). The entire crowd started telling 'sudharshana ashtakam'. Amazing , perfect synchronisation in the chorus ..Suddenly to my surprise , Mrs.Anantha Padmanabachari (Revathi) and Anantha Padmanabachari were next to me. Mrs. Revathi identified me and called by name. Of course she was my brothers classmate and Mr.Anantha Padmanabachari was my sanskrit teacher. They spent a pretty good amount of time with me in the amidst of a countless crowd. It may not be a great thing if it had been few years back. But today he is one of the celebrities. With heart filled with many great things , I enjoyed company of my cousin in the kanchipuram home.For this quasi-psuedo spritualist these are the bonus+profit. In computer science term these are free licensed spritual software packages and in communication terms these are free licensed dedicated spectrum for spritual wave communication !!

In short , In the amidst of working in electromagnetic waves (wireless) related things in the office I experienced spritual waves in melkote , kanchipuram for the past two weekends .. As I always say we are all planets and spritualism is our sun. we do not need to go to this closely but atleast we should move around it with out loosing the balance of centrifugal-centripetal forces !! Thanks for reading this big article and I know pretty well that I will be around sprituality without sacrificing science and logic !! I am fortunate to have people around me are also like me !!

Associate Scientist
Industrial Communications
ABB Research
9008855227 / 9742488576

Wednesday, October 13, 2010

Applied mathematics is challenging ??

Mathematics is the only subject which avoids so many if and buts.When a person says he is not good in mathematics we immediately deduce that he is not an intelligent. Why mathematics is tough ?? Small child when it is in LKG / UKG it is asked to memorize number 1 to 25. Up to 1 to 10 it can do addition and subtraction using fingers then it blindly follows some algorithm for > 10. When it goes to 1st standard , It is mandatory to memorize upto 5 tables .. i.e look up table in modern term. Slowly the mathematics becomes abstract and not like concrete science. When the child writes 10th standard exam , for him maths and science are two mutually exclusive subjects !! Then 12th exam all vector ,analytical geometry , trigonometry , differential equations , calculus etc... Mathematics has become a abstract scoring subject , hitting a six with out knowing in which direction the ball is hit !!
In engineering , First few semesters we study Laplace transform , Matrix algebra , vector algebra , complex theory , Fourier analysis every thing before the real application-subjects such as electromagnetic theory , circuit analysis , Signal processing come into the curriculum. So we are still studying abstract mathematics for first two years in our engineering. Last two years we try to derive the mathematical aspects of Em Waves , Signal Processing etc.. They are not aligned !!The ultimate truth is Maths teachers do not teach the application of Mathematics and Science teachers think we know the mathematics of the subjects !! So again Mathematics and Science/engineering not connecting to each other !!

So we finally realize we are good in maths , we are good in engineering but we can not read some research papers because when we fuse together 'Applied Mathematics' we are still bad in this !! How many of us know the physical meaning of Eigen value and Vector !! How Fourier series is derived from Taylor series !! How Maxwell derived em equations 24 years before the experiments done by Hendry !!
Our curriculam should teach mathematics parallel to science and engineering . Alignment should be perfect.In general , from next generation on wards we need to insist our children to concentrate on applied mathematics rather than pure mathematics !!