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Comment: Re:In space (Score 1) 470

by Calinous (#48017441) Attached to: The Physics of Space Battles

There probably is going to be an electromagnetic pulse wave - which contains electromagnetic energy which can be received by the metal parts of the ship/craft. In this case, those metal parts might dissipate some of that energy as noise.
      So no, sounds from another ship won't be heard in space. But outside effects might generate sounds inside your ship.

Comment: Re:No it will not. (Score 2) 375

by Calinous (#47728069) Attached to: Would Scottish Independence Mean the End of UK's Nuclear Arsenal?

There are quite a few rules for moving to Euro - one of them refers to three (I think) or more years of 1.5% inflation on the national currency... which the Scotland would not have. They'll need to prove they're a solid economy before taking Euro as national currency, and that will take some time.

Comment: Re:How does this account of caching? (Score 1) 125

There might be some "hints" for microprocessor for the data to cache - if so, those could be added in the generated microcode at some time before they're really needed, increasing the chance to have them available in cache and/or reducing wait time. Of course, I don't know for sure but you could read a value in a register then zero the register. This might be optimized out of microprocessor run (so it won't consume energy to load and then zero the register), but still go through the data fetch engine, so it would reach L1 or L2 cache.

Comment: Re:How does this account of caching? (Score 1) 125

Recovering the slowdown in subsequent steps = use the full width of seven microops to run significantly faster than a typical out-of-order ARM design. As for continuing when there's a data cache miss, I was referring to out-of-order designs, which might - or might not - be stalled in a couple more instructions because of dependencies on not-yet-processed data (which is loaded from memory).

Comment: Re:How does this account of caching? (Score 1) 125

If their cache lines are 64 bits, then it's quite possible that successive instructions (based on execution time stamp) are in the same cache line. Remember that this has to improve execution speed most of the time, and not decrease execution speed. As for data caches, I'm not sure - a good prefetcher will help a lot in this.
      This has the possibility to slow down execution speed... I wonder how often and how long the execution of a thread can continue when there's a data cache miss... Maybe almost all of the time it doesn't continue far, and in this case the slowdown could be recovered in subsequent steps.

Comment: Re:to save others googling (Score 1) 105

by Calinous (#47629447) Attached to: IBM Creates Custom-Made Brain-Like Chip

http://en.wikipedia.org/wiki/C... ... so, parts of the brain are specialized for specific activities.

Or you use all your brain for any activity you do, and you can't do two things like Napoleon: sit on a horse and look left ?

Comment: Re:Why aren't space pictures better? (Score 1) 62

by Calinous (#47620505) Attached to: European Rosetta Space Craft About To Rendezvous With Comet

No, it only affects available bandwidth - the bytes per second and the bytes per watt (or maybe watts per bit?). Also, until now pictures were taken from astronomical distances and without the help of a huge optical apparatus, which would directly affect the apparent quality of the image.

Comment: Re:Why aren't space pictures better? (Score 5, Informative) 62

by Calinous (#47612273) Attached to: European Rosetta Space Craft About To Rendezvous With Comet

There are severe limits on sending antenna size and power use on the craft. They use a 2.2 meters diameter dish (seven feet), with 850W electric power from solar panels to transmit from a distance about one hundred thousand times greater than geostationary TV satellites.
      It's like the difference between whispering at someone's ear (half and inch away) and shouting for someone a mile away. I can't think of a car analogy on five orders of magnitude, but I'm sure someone will be more inspired

Comment: Re:Why the "incentives"? (Score 1) 113

by Calinous (#47606815) Attached to: SpaceX Chooses Texas Site For Private Spaceport

Nokia closed a factory in Germany to move it to Romania, and then closed it in Romania (maybe to move it somewhere else). They're now closing factories in Hungary and Turkey (I think), the one in Germany and Romania after about five years of operations.
      So yes, factories can move. Some of them even before their preferential status expire.

Comment: Re:Why the "incentives"? (Score 3, Insightful) 113

by Calinous (#47605257) Attached to: SpaceX Chooses Texas Site For Private Spaceport

Over the long term, they hope that the company will pay more than 20 millions back in taxes. And they'll also add local jobs (probably by the hundreds), attract (or supply) highly paid workers, maybe improve tourism in the area and so on.
      They hope that, long term, it will be better for them than if Tesla built the spaceport in a different state.

The goal of Computer Science is to build something that will last at least until we've finished building it.