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Comment Re: Cert signed by central private authority = cr (Score 5, Informative) 47

The Transmission app uses the Sparkle Software Update mechanism. Sparkle uses certificate pinning to prevent exactly this type of attack. The auto-updater will not permit an application to be updated if the update is signed by a different entity.

So this malware only affected people that manually downloaded the app from the Transmission website.

Comment Re:Java? (Score 1) 366

It's by far the best platform for those researching JIT compilation

Why not Smalltalk? It doesn't cheat with primitive types or limit you with a rigid object system. Quite a bit more interesting for researching what can be done about JIT compilation of more complex code IMO.

Like you'd want to do research with Python or something?

PyPy people have apparently done quite a bit of research with Python.

Comment Re:a very large planet, 15 times the Earth (Score 1) 150

And something basically to that effect was for a period at the IAU conference the definition being haggled over. A lot of people went home at that point thinking that either that would get voted in as the definition, or there would be no definition, and were fine with either outcome. The committee however changed the proposal before the vote came up.

Comment Re:The universe. (Score 1) 150

These are what the IAU came up with, in a vote that was very controversial among its membership. An association dominated by astronomers, not planetary scientists, who were by and large against the decision. And a set of terminology that you can often find flatly ignored in scientific papers. Example. In short, the only group that the IAU is able to bludgeon into using their term is the general public (using the "We're scientists, if you don't use our term you're wrong and ignorant" gambit), not the scientific community itself.

Comment Re:If the singularity doesn't happen... (Score 2) 150

Stop feeding the troll ;) If a person can't handle an argument without name calling, they're not worth your time.

For what anyone not trolling :) There is nothing magical about existing on Earth that allows a nuclear reactor to run. Earth does provide a few conveniences, mind you - your mass budgets are unlimited, and cooling is easier. But nothing about either bulk nor mass prevents nuclear reactors from operating in space, by any stretch, and the two main things limiting their use have been a lack of need and NIMBY (the former being little applicable in the former USSR, they used them quite a bit, although they still lacked a need for high powers and so generally kept them fairly small; in the US, NIMBY limited the US to just one launch, although the US developed a number of other systems, some to flight-ready status, on the ground).

The typical mass balance for a in-solar system fission fragment rocket (measured simply by MWt, not MWe, since thrust is direct) is about 20% payload, 20% structural, 35% reactor, and most of the rest toward various aspects of cooling. The nuclear fuel makes up only about 2% of the total mass (figures from the Callisto baseline). For an interstellar mission, however, the fuel would make up the a large minority or the majority of the mass, trading significantly reduced acceleration for significantly longer acceleration times. On an in-solar-system version, power density is about 6kWt per kilogram of reactor mass (that 35% figure above). This is actually quite low by large-space-reactor standards; many modern multi-megawatt reactor research projects for NEP and defense purposes (example) often deal with density figures of 50-100 kWe per kilogram, including cooling. But a fission fragment reactor has a sparse core and has to rely extensively on moderation / reflection to keep up a sufficient neutron flux; higher core density is prohibited because then the fragments would thermalize.

One thing that's neat about a fission fragment reactor is that, like systems like VASIMR, it can operate in various output modes, trading ISP for thrust as needed. In pure fission fragment mode it's ISP is is ridiculously high, nearly 1m sec; your thrust is purely the relativistic fission fragments from each reaction, carrying the majority of the reaction's energy away. However, you can inject gas into the stream as reaction mass, limited only by the density to which your magnetic nozzle can keep the stream confined. So where higher thrust maneuvers are needed, you can use the same engine (up to the aforementioned extent, of course; you're not going to take off from a planet with a FFRE!)

Comment True by definition (Score 1) 132

When you define "productivity" to exclude any benefit from doing anything on your phone, then less time spent on your phone leads to more time available for "productivity".

The question is, why should anyone care? "Productivity" isn't the only thing that matters.

If you want to be more productive, keep your phone but delete the Facebook app.

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