### Nabin K. Malakar, Ph.D.

NASA JPL
I am a computational physicist working on societal applications of machine-learning techniques.

### Research Links

My research interests span multi-disciplinary fields involving Societal applications of Machine Learning, Decision-theoretic approach to automated Experimental Design, Bayesian statistical data analysis and signal processing.

### Linkedin

Interested about the picture? Autonomous experimental design allows us to answer the question of where to take the measurements. More about it is here...

### Hobbies

I addition to the research, I also like to hike, bike, read and play with water color.

### Thanks for the visit. Please feel free to visit my Weblogs.

Welcome to nabinkm.com. Please visit again.

## Friday, December 23, 2011

### Color-coded boarding scheme

The airlines board aircrafts in the ascending order of "Zones". Zone 1, 2 and 3 etc are called in order.
Everyone knows how chaotic and time consuming it is. Because the next person in line has to wait for people who are trying to stow their luggage. This creates a long line. So, It does make sense to fill the plane from the back and come progressively front-ward.   People with kids and needing assistance should be boarded first.

Recently there are various ideas being put forward to speed up the boarding airplanes. It seems that boarding from back of the plane and filling window-seat passengers are the best way [see 1 and 2]. I like the Wilma boarding scheme where the window seats are zone 1 and aisle seats are zone 3.

Having seen some of the schemes to speed up the boarding, I am inspired to propose a color-coded boarding scheme. My idea is closer to steffen's method (see figures).
In this scheme, instead of calling zones, the calling is dependent upon the color-codes say blue, green, purple, yellow etc. Blue and green color seats are  the window seats are are called first.  I realized that  in [2] it is similar to the wilma scheme.
If tickets are booked together, in the case of husband/wife/ friend scenario, they can be coded the same color.

The seats are filled from back to front in an alternate seats. As shown in the figure, 1, 2, 3 etc are blue and seats 19, 20, 21 etc are also blue. If 1 and 25 booked together, then they are grouped together as blue. The numbers 13, 14, 15 and 7, 8, 9 are green color. In this way, the passengers get enough space to move around to stow their luggage and should make boarding faster. The assignment of color code can be made while the boarding card is being printed. Alignment of passengers in the gate will make  the boarding smoother. Just an idea.
 Steffen method of seating order. See [2 ,3] for details. See text for details on how it might be possible to make it faster by color-coded boarding.

The final result might look like:
 Color coded boarded scheme. Blue and green are called  first by the  stewards  in a sequence. People who booked flights together get the same color code as in #5 or #18.

References:
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## Saturday, November 19, 2011

### This week: Neutrinos still superluminal according to experiments

A lot of things happend this week, so I am pinning few down here...

"The statistical interpretation of the quantum state is inconsistent with the predictions of quantum theory"
http://xxx.lanl.gov/abs/1111.3328
http://twitter.com/#!/nabinkm/status/137499597688930305

Are neutrinos running faster than light?
http://twitter.com/#!/nabinkm/status/137675067193700352
http://twitter.com/#!/nabinkm/status/137506258361126913

http://twitter.com/#!/nabinkm/status/137595451984711680

http://twitter.com/#!/nabinkm/status/137593841875288064

http://twitter.com/#!/nabinkm/status/137592914200104960

http://twitter.com/#!/nabinkm/status/136812249892401152

http://twitter.com/#!/nabinkm/status/136599314486140928

Automated FarmBots for farmer-less farming:
Recent developments in automated farming the crop field has achieved centimeter level accuracy in localization of the farming UAVs.

http://aerialfarmer.blogspot.com/2011/01/uavs-and-agriculture-4.html
http://www.commoncontrolnow.com/Download/The-Unmanned-Farmer.pdf

Lets just call it "Microwave Maths" or "Lightwaves in your service" instead of that long title
http://www.scientificamerican.com/article.cfm?id=microwaves-and-the-speed
However, it nicely points out the physics happening inside the microwave.
By measuring the cooked spots in microwave, one could calculate the speed of light. I think it could be a nice textbook entry for high school students in western world.

## Tuesday, November 8, 2011

### Fobos-Grunt Lifts off from Baikonur Cosmodrome

Fobos-Grunt mission to scoop Phobos, one of the moons of Mars...

http://www.youtube.com/watch?v=4LfsNzNEHhM#!&t=3495
(note how the tail disappears @ about 1hour mark)

The spacecraft is expected to reach Mars' orbit in September 2012, with landing on Phobos scheduled for February 2013.

Update: it seems it is stuck in the earth's space because of some technical troubles... they say if it does not fire in two days, it might be lost!
Ref: http://www.bbc.co.uk/news/science-environment-15684192

On the other news:
Mars Science Laboratory, a suv sized rover, is going to be launched by the end of this month.
http://www.jpl.nasa.gov/news/news.cfm?release=2011-347
 Snapshot credit: http://mars.jpl.nasa.gov/msl/

Follow MSL @marscuriosity
http://en.wikipedia.org/wiki/Phobos-Grunt

## Sunday, October 30, 2011

### Clocking your Time-- Globally

Daylight saving is the practice of temporarily advancing clocks during the summertime so that afternoons have more daylight and mornings have less. Typically clocks are adjusted forward one hour near the start of spring and are adjusted backward in autumn.

The following video nicely explains all you need to know about the daylight savings time.

Back in the days, daylight saving time was thought as an innovative way to schedule people's work hours around the availability of the sun. The questions are "Does it really save the money?", and "Does it make people more productive, or rather less?" It has been highly debated (there goes ideas for few more correlation studies!).

Personally, for me, even though the DST says it is lunch time, my biological clock says it is otherwise. It takes time to get used to the DST changes, and that happens every time DST changes are made. In general, there might be people who are sleep deprived because of DST. To catch a sudden change is another pressure the body is subjected to, which might in turn increase the health related risks.
Thats why I think DST might not be effective in "saving" anything (cry out for more research!!).

Moreover, I would argue that in the age of internet, the whole idea of local time shall be removed. We all shall globally adopt the UTC. So, instead of referring to the local time and then going plus minus x hours for intercontinental communication/scheduling, one could simply refer to UTC. That means in USA east coast, a person who wakes up at about 7 AM will say, "I woke up at about 12PM (UTC) today". Everyone will adapt to the same clock, but will manage to sleep/work according to the local sunrise/sunset with reference to the UTC. It may sound weird to say that the sun will rise at 10PM (UTC) in USA east coast, or  12AM (UTC) in south asia, but it will be OK after some practice. We will all enter into the new year at the same time around the globe. Since UTC would be the only standard, it would be very simplified to, "meeting at 9PM"-- no need to worry about the country, place, or whatever. Simply pick your universal time!
 You can see how complex it becomes for each region. If UTC were to be the only time, one could say meet @ 6PM UTC!

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Source: internet

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