Follow Slashdot blog updates by subscribing to our blog RSS feed


Forgot your password?

Comment: Basic:tedious, user unfriendly, not problem orient (Score 1) 215

by viking80 (#49207191) Attached to: Ask Slashdot: Best Strategies For Teaching Kids CS Skills With Basic?

Basic as a language is tedious, user unfriendly, and not problem oriented. Java is a lot better. My kids 6. and 8. grade took Stanfords CS101, and I was truly impressed with how fun it was for them, as well as what they could accomplice.

Everything is done right in the browser. Try it out for yourself. Khan academy has tried a "fun game" in java approach, but this is much less focussed and kids seem to tire of it as soon as they have made the limo break the sound barrier.

1. A lot of graphical processing, like finding traffic signs in urban environment (for automatic driving) to bluescreen manipulation.
2. Also building databases and doing datamining.
3. Networking
4. More programming; Digital media, analog, security etc

Nick Parlante is the teacher, and a great guy.

Comment: Darwin never suggested "survival of the fittest" (Score 0) 249

by viking80 (#49072217) Attached to: Game Theory Calls Cooperation Into Question

Darwin never suggested "survival of the fittest". What does this even mean? 'Fittest' must mean ' most fit in a certain environment', but how is that measured? 'Most fit' must can only be meaured as the ones 'that survive'. So the statement can only mean "survival of the survivers" which is a trivial obsurdity.

Comment: Intels tick-tock strategy is a play to the gallery (Score 1) 78

by viking80 (#48482287) Attached to: Intel Core M Notebooks Arrive, Lenovo Yoga 3 Pro Tested

Intels continued tick-tock development is at this time only a play to the gallery. The 14nm core actually only has 1 component per 321 '14nm tiles'. This is 1% the density from 10 years ago. The performance has not improved very much over the last generations either.
Maybe it is time for Intel to use their enormous resources to go in a new direction and become competitive in a new world. Otherwise they will tick-tock themselves into fighting a sub 10nm battle with no enemies except Moore's law.

Comment: Re:DOF (Score 3, Insightful) 201

I respectfully disagree on all your points
- Small pixels reduce sensitivity, not dynamic rage, but the whole point with the isocell sensor is to increase sensitivity in a small pixel. Because photons are discrete, your dynamic range can be no better than 10*log(photon count/pixel). To get 10 bit dynamic range you need 10e3 photons/pixel.
- The megapixel game is not meaningless. I use a large printer, and with a 25Mpix sensor, the result is a lot better than with a 10Mpix sensor. The print actually has a resolution of 12 000 Mpix!

The quantum efficiency, QE, of most backlit sensors ranging from the best DSLR to the Samsung is all around 10%. (Human eye and astronomical cameras can be up to 100% i.e. detect single photon.)

10% QE is about 5 picoLumens per pixel sensitivity, and here is where the sensitivity comes in. 1 lux= 1 EV = 1 lumens/m2 = a bit more than bright moonlight. Assume you have an f1 lens. now you will need 5 nanoLumens/pix for 10bit DR.

A 7mm lens will give you 3.8E15 photons/s, so each of the 16Mpix will get 2.38E8 photons, or 2.38E7 LSB. This should equal 24bit dynamic range. This is with a lot of generous assumptions like an f1 lens, no statistical noise, no thermal noise etc, but still enough photons to give good dynamic range in the darker parts of a photo.

This should give some insight into some of the fundamental limits.

Comment: Best theory: pilots disabled; flew by autopilot (Score 1) 491

by viking80 (#46569577) Attached to: How Satellite Company Inmarsat Tracked Down MH370

Given all the information, here is the best explanation of what happened:
1. The airplane hits meteorite or some other foreign object causing immediate decompression and damage in the cockpit.
2. The pilots have a few minutes to dive down to thicker atmosphere before the die due to lack of oxygen.
3. They dive the airplane down to be able to breathe.
4. At the same time, able to set the autopilot to fly back to land at a low altitude.
5. They both expire, and the airplane continues to fly on autopilot.
6. As they fly the wrong way, passengers and crew try to get into the cockpit to take over and land the plane.
7. Nobody can break into the cockpit, and after 7 hours the fuel is used up, and the plane dives into the drink.

"I have more information in one place than anybody in the world." -- Jerry Pournelle, an absurd notion, apparently about the BIX BBS