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Comment: Your employee should be a unit tester (Score 2) 521

by bugnuts (#43792389) Attached to: Ask Slashdot: Moving From Contract Developers To Hiring One In-House?

Instead of an end product coder, hire a unit tester. Hand him the specs that you send out, and have him code unit tests for all input categories of the different modules, and check results and fail modes. Hell, have him send out these tests as he finishes, so that the contractors can use them, too.

If the unit tests are correct and the software is failing, don't send out paychecks until it passes. Getting the test suite running may take a week or two once the code is delivered, so you might be a little later than you usually are. But you contracted for working code, and the easiest way to verify it's correct is to pass a test suite. Once it passes that, you'll know that it passed YOUR specs. At this point, if there are bugs despite meeting the specs, it's your fault.

Movies

Ender's Game Trailer Released 470

Posted by Soulskill
from the enemy's-gate-is-down dept.
The first trailer has been released for the movie adaptation of Orson Scott Card's sci-fi classic Ender's Game. It gives us a good look at Harrison Ford as Colonel Graff, Ben Kingsley as Mazer Rackham, and Hugo's Asa Butterfield as Ender. It also demonstrates just how much money they put into the special effects for this movie.
Technology

Sandia Labs Researcher Develops Fertilizer Without the Explosive Potential 180

Posted by samzenpus
from the no-boom-for-you dept.
cylonlover writes "Ammonium nitrate is a commonly used fertilizer, but when mixed with a fuel such as diesel, it makes a powerful explosive – as seen in last week's fertilizer plant explosion in Texas. But it's the deliberate use of the compound in improvised explosive devices (IEDs) and acts of terror such as the Oklahoma City bombing that gives rise to even greater cause for concern. This is why Kevin Fleming, an optical engineer at Sandia National Laboratories, developed a fertilizer alternative that isn't detonable and therefore can't be used in a bomb."

Comment: His example is already illegal (Score 2) 420

by bugnuts (#43441543) Attached to: Eric Schmidt: Regulate Civilian Drones Now

You have the right to be free from that annoyance. Any drones that flew over your house would have to be over 500 feet (depending on area, might be more) in public airspace, or be a very temporary disturbance.

Hovering for long periods below 500 feet or above but impinging on your right to enjoy your property is illegal.

"Drones", or UAVs, or UASs, better known as "Radio control planes" have been quite legal for decades. He's trying to make a big deal of it only because it's going to be legal for commercial entities instead of just hobbyists to use. Your neighbor already can hover over your house, so there's no impending emergency to enact legislation as he is implying.

Google Glass is a far worse threat, and I fear he may be making a "Look over there!" argument to distract from the horrible invasions of privacy that will be happening in a few years due to Eric Schmidt himself.

Comment: Re:I call bullpucky (Score 1) 170

by bugnuts (#43328403) Attached to: New Camera Sensor Filter Allows Twice As Much Light

Regarding antialiasing, foveon does promise to avoid color antialiasing which is generally required for bayer filters.

This new sensor "filter" splits colors into a pattern, which will have a similar effect as a bayer filter. Thus, it will need the colors antialiased to prevent bizarre moire color effects.

Sharpness is reduced by demosaicing and color antialiasing, thus Foveon kind of does promise sharper images because it needs neither of those. If their sensor tech had kept up with the quickly emerging tech of Canon or Nikon, they would be in the running. A 24Mpx Foveon sensor that actually worked in light extremes would really rock.

But with this new filter allowing a decent SNR and a ton of light to be gathered accurately (two big weaknesses for Foveon), I believe it will be the end for that struggling sensor.

Comment: Re:I call bullpucky (Score 4, Informative) 170

by bugnuts (#43322341) Attached to: New Camera Sensor Filter Allows Twice As Much Light

Foveon has 3 photodiodes per pixel, and theoretically should have the most accurate colors and sharpness by avoiding moire and interpolation issues with bayer filters. In practice, though, a lot of light is lost by the time it reaches the 3rd photodiode.

There is indeed white light because not every pixel has a filter over it. Many pixels pass the light through a hole to the pixel, while a neighbor pixel funnels red light (e.g.) to it. Thus, you get white + 1/2 the neighbor's red. You also get half the neighbor's red on the other side, resulting in white + red for the three pixels in a line.

Cyan is part of the color spectrum as a "subtractive color". What remains under each neighbor pixel when you strip away the red, is the cyan.

From what I can tell, this will not get rid of the need for the anti-aliasing.

+ - New camera sensor filter allows double the light->

Submitted by bugnuts
bugnuts writes "Nearly all modern DSLRs use a Bayer filter to determine colors, which filters red, two greens, and a blue for each block of 4 pixels. As a result of the filtering, the pixels don't receive all the light and the pixel values must be multiplied by predetermined values (which also multiplies the noise) to normalize the differences. Panasonic developed a novel method of "filtering" which splits the light so the photons are not absorbed, but redirected to the appropriate pixel. As a result, about twice the light reaches the sensor and almost no light is lost. Instead of RGGB, each block of 4 pixels receives Cyan, White + Red, White + Blue, and Yellow, and the RGB values can be interpolated."
Link to Original Source

Comment: Re:antibioticas for viral = bad (Score 1) 240

by bugnuts (#43259339) Attached to: Most UK GPs Have Prescribed Placebos

Antibiotics are properly used for prevention all the time. There's a tradeoff of damage a new infection can cause if it takes hold or gets worse while treating something else, and lung infections are a fine example: http://www.cdc.gov/hantavirus/technical/hps/treatment.html

Antibiotics are used improperly for prevention all the time, but that doesn't mean it's wrong to use them in all cases. If doctors waited for a diagnosis of infection on someone with hantavirus, that person would have a higher chance of simply dying.

Comment: Re:antibioticas for viral = bad (Score 4, Informative) 240

by bugnuts (#43244005) Attached to: Most UK GPs Have Prescribed Placebos

While antibiotics won't stop a viral infection, one thing they can help with when infected is to prevent other infections. For instance, a bad viral lung infection might be treated with antibiotics to prevent an opportunistic bacterium like pneumonia from attacking.

And yeah, pharmacies used to carry placebos. When I worked in a pharmacy long ago, I did indeed dispense them. It was labelled with the chemical name (sucrose, lactose 50mg, etc), but may have been given unlabelled as a unit dose.

Try to get all of your posthumous medals in advance.

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