Sunday, February 10, 2008

Selling brand names

Some times people fell into brand name. I am one of them. This movie "Visakha Express" (Telugu movie falls into this category. Not on the director, not on the producer, only on the name "Chandra Sekhar yeleti" (Screen play), pulled me to watch this movie. Quite some time back, I had to watch one crap movie "Ram", because of music director "Yuvan Shankar Raja". It is very natural that if we feel good about some one, whatever he does, whatever he speaks, wherever his presence, makes us to accept even though the things are hard to believe.

If I had to tell you about this movie "Visakha Express", simply it is crap. Crap, Crap, Crap. Not only this one, these days I was become frustrated and getting anger after watching these movies: "Vaana" (Telugu, remake of "Mungaru male" Kannada) and "Pourudu" (Telugu), and "1408" . Also few good ones are there "There will be blood" , "Ratatouille", "Atonement " , and "Manorma Six feet under".

Wednesday, February 06, 2008

Modeling

I recently encountered one process control topic "Model Predictive Control or simply MPC" as most of my time is to do research on modeling and simulation. Since it was not taught in any of my control systems courses, I am quite fascinated to know more about this.

The underlying concept comes from human intuition. As most of control theories come from real implementations such as PID, MPC also falls into the same basket.

The below image tells very nicely about MPC idea. (Image taken from Model Predictive Control, by E. F Camacho, Carlos Bordons )


It is very simple. Suppose, if you are driving a car it is very obvious that you know the path at least couple of meters ahead of you. That information is well enough you to how to drive your vehicle. In mathematical terms, the future control action needs the prediction of the target path (or prediction of the future errors), in contrast to PI control, where the control action needs past errors.

Of course I am not an expert to explain more about this, but quite interested to show off my interest in this field. Majority of industrial process use this theory in some manner and DMC (Dynamic matrix control, by Cutler, Ramakar, 1980) is the widely used Model predictive control.

Tuesday, February 05, 2008

Doesn't matter

There are several ways to convince others. There is an old saying "Saama beda dana dando payam", which says one can win over others by doing some trade-offs. I recently watched one movie "Okkadunnadu" (Telugu) in which the director projected the lead actor in a very strong desperate role to get his work done. On the other side of the movie, the opposite character tries to convince every one for his heart transplant. This movie creates shivers in every ones heart. The movie shows that it is not very hard to convince others. Also, it also underlines the fact that it is always good to listen to your own heart.

As a matter of fact no one loses, no one gains. Only the way we lead does matter.