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Comment: Alopecia universalis is not the same as MPB (Score 2) 109

by fozzy1015 (#47285203) Attached to: Scientists Successfully Grow Full Head of Hair On Bald Man

Alopecia universalis is a rare autoimmune disorder, and it's understandable that a drug that works on a pathway to alleviate arthritis could also work for it. The more common male pattern baldness is caused by the sensitivity of certain hair follicles to androgens, specifically testosterone and its more active form dihydrotestosterone. It's unknown why some hair follicles respond to it by growing hair(think chest hair) and others miniaturize until the hair is nearly invisible(think hairline and top of the head).

Comment: Re:A Stupid Question Is One You Can Answer Yoursel (Score 1) 22

by fozzy1015 (#46377051) Attached to: Gesture Recognition Without Batteries

It's a receiver that doesn't require a power source, but to say change the channel on a TV, it needs to be connected to some sort of transmitter that DOES require a power source.

You see, you can put this device IN THE TV as part of it. Now you don't need a standard battery powered remote control.

Then what would be the point of it not requiring an external power source if it's built into something that does?

Also, "The prototype could correctly identify the gestures more than 90 percent of the time while performed more than 2 feet away from the device."

I prefer sitting much more than 2 feet from a TV. There are already powered hand gesture systems with much better range that can be built into a TV.

Wow, that sure took a lot of thought!

Obviously it didn't.

Comment: Not sure how similar this is to hashing (Score 3, Informative) 97

by fozzy1015 (#46313775) Attached to: Naming All Lifeforms On Earth With Hash Functions

I first thought the genetic sequence of an organism would be the input to a hash function, but reading further that doesn't seem to be the case.

"Using Vinatzer's genome sequence, the Ames strain used in the bioterrorist attack would, for example, be known as lvlw0x and the ancestor of this strain stored at the U.S. Army Medical Research Institute for Infectious Diseases would be known as lvlwlx."

The output name would still show ancestry using identical values, when one of the key properties of a hash function is that small changes in the input result in a completely changed output.

Comment: I find the premise laughable (Score 4, Insightful) 612

by fozzy1015 (#45762337) Attached to: Is Computer Science Education Racist and Sexist?

IT/Software Development is one of the rare, if not unique, fields where people can be very paid well, the job market is currently hot, and one can learn everything from inexpensive books(or even free online courses) combined with motivation. It's positively egalitarian. If the premise had to do with medicine and law, where there's required expensive schooling and potential for a "good ol' boys" club atmosphere, then I'd find it more believable.

When I've interviewed for development positions where the person went to school was of little importance. In fact, our CTO(who has his BS and MS in CS from Stanford) even jokes that it's the people straight from academia that sometimes seem the most incompetent. The only things we care about are if you know your stuff and have some body of previous work you can point to and talk about. But then I work in Silicon Valley where a competent developer can pretty much write his own ticket right now.

My experience in commercial development the last 13 years had me working with females. They were almost always foreign born, often with English as a second language. Yes, it's mostly males, but a large part of them are East Asians and Indians, not all white males.

In short, the bar of entry in my experience is low as long as you're motivated and competent. Why aren't there more women? Look at practically every engineering and scientific accomplishment in human history. Are you going to tell it's just culture that has kept those accomplishments relegated almost entirely to men?

Comment: These types of comparisons are flawed (Score 1) 256

by fozzy1015 (#42769629) Attached to: Mars Rover Curiosity: Less Brainpower Than Apple's iPhone 5

On the surface these comparisons are interesting but when you understand how these systems were designed you'll see it's not accurate. Curiosity is an example of an embedded system. The code that runs on it is only meant to operate the rover and its instruments. Comparing its hardware to a general purpose computer meant to run various applications is flawed. And because their purposes are different so are their operating systems.

The last time I read about VxWorks and a Mars rover had to do with Pathfinder. They had some problems with the rover randomly rebooting once it was on Mars and had to debug it. The problem turned out to be a classic example of priority inversion.

http://www.cs.cmu.edu/afs/cs/user/raj/www/mars.html
 

Comment: Re:Been there, done that? (Score 1) 285

by fozzy1015 (#41820169) Attached to: 48-Core Chips Could Redefine Mobile Devices

. unless you just dedicate one to each process (not to each thread - that opens up problems with cache and data consistency).

How so? Any issues with cache consistency have to do with each core having their own L1/L2 caches but sharing the same memory. This is what hardware based cache coherence protocols like MESI were invented for and have nothing to with running multiple processes vs. multiple threads. Are you're referring to the fact that threads in the same process share the same address space? There has to be care taken to serialize access to critical sections(such as using a lock based on a mutex), and while blocking threads at critical sections can be detrimental to performance by reducing parallelism, the OS scheduler can just as effectively schedule multiple threads in one process to run on multiple cores as it can schedule a single thread in multiple processes. Multiple processes require the same sort of serialization for accessing shared memory between them. The difference between the two is how the MMU is used to configure address spaces, not scheduling.

I took a fish head to the movies and I didn't have to pay. -- Fish Heads, Saturday Night Live, 1977.

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