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User: alexander_686

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  1. Maxwell's demon on New Record High Temperature At South Pole · · Score: 2

    A heater converts energy from one form to another. i.e. electricity to heat.

    A cooler is a heat pump - it moves "heat" from one point to another, hotter, point.

    It is easier to get a high efficiency from a heater because most forms of inefficiency in a system turn out to be “waste” heat – i.e. what you want. Moving heat from one point to another is different. It’s though to get a highly efficient method of moving heat – unless you have demons.

    http://en.wikipedia.org/wiki/Maxwell's_demon

  2. Re:Nothing wrong with this on Did Microsoft Make Google Pay Triple Rate To Mozilla? · · Score: 2

    I mostly agree what you are saying, but I want to point out 2 technical points.

    First, supply is not constant. It’s like saying the supply of Ford cars is constant because Ford is the only supplier of Ford cars – which – while technically true does not offer a lot of insight. Consumers demand a web browser. There are many suppliers of web browsers which are close substitutes. There is a reason why Google is paying Firefox 300m but not Opera.

    Second, while "Default search provider" can't really hurt the consumer directly, it can harm the market and thus the customer indirectly. Think of all the tying that Microsoft has done as an example. If Windows97 ships with Explorer does this prevent people from downloading Netscape? No – but a lot won’t take the extra step. If Kraft buys out all of the eye level MacNCheese on a grocery story (which they do) does this prevent a consumer from bending over and buying a new local brand? No. (well, in this case, sometimes yes. Stores can only stock X brands of MacNCheese, so they big corps pay for the prime shelf space. The big boys can’t price out a specific smaller producer, but they can shrink and tilt the mark their way.)

    I am not a huge fan on the FTA regulating internet monopolies because they take years to decided markets that last for ½ as long, but it is important to understand what is happening.

  3. I have heard of a version of this that works.... on The Problem With Windows 8's Picture Password · · Score: 1

    I have heard about "image" password that sound like they could work.

    Your password could be "car" and "Flower". You would be presented with a "random" photo that had lots of things in it - but only a single car and flower. Humans can pick out the car and flower easily - even when presented with a new photo. Harder to automaticly hack.

    Of course it's not foolproof. For that I give you xkcd.
    http://xkcd.com/538/

  4. For Goverment, not for public. on IBM Tracks Pork Chops From Pig To Plate · · Score: 1

    The FDA is trying to do something similar here in the U.S. Cost / Benefit and regulating small farmers is the problem.
    They want the data for public health reasons. When there is an outbreak to disease (tuberculosis, salmonella) or contaminated meat the FDA would like to track the outbreak to the source. So, while it is kind of pointless to know where your hamburger came from (the packages in the local supermarket come from 1 or 2), not so much for the public health people.

  5. Better, Stronger on How 3D Printing Could Help Keep the ISS In Orbit · · Score: 1

    Printing 3D in metals has been around for a long time - it's just more expensive then printing in plasic.

    Materialise makes a 3D printer that can print titanium hip replacements. Because it can print in 3D it can replicate the structure of bones (i.e. lots of small holes) - So you get something lighter without diminishing strength.

  6. It's like popcorn on The Kindle Skews Amazon's 2011 Best-Seller List · · Score: 4, Insightful

    It's free to you - but not to Amazon.

    Amazon's business model would collapse if they had to physical ship $1 dollar books and absorb the shipping. On the other hand, it can work with electronic delivery.

    That being said, a lot of the “books” being suggested are actually short stories. It’s a format I love but few people do it because there small so they can’t make money off of them – or is that changing? In any event, I would pay a dollar or two for popcorn books, but if I pay big bucks (over $5) it had better be a big, luxuries meal that will take some time to savory.

    Also, did anybody else notice the self published books?

    It’s not that Kindle readers are reading different kind of books, but the e-readers allow readers to buy different types of books.

  7. Are you sure? on New Study Concludes Math Gender Gap Is Cultural, Not Biological · · Score: 1

    From the Economist, Female Labor Markets, http://www.economist.com/node/21539932
    "In Sweden, Finland and Denmark, where women make up roughly half the labour force, their share in public-sector employment is a remarkable 70%."
    &
    "Women are concentrated in teaching, health care, clerical work, social care and sales; they are underrepresented in manual and production jobs, maths, physics, science and engineering and in managerial jobs, particularly at the senior end. They are also much more concentrated than men in just a few job categories. Half the employed women in rich countries work in just 12 of the 110 main occupations listed by the International Labour Office (ILO). The jobs in which men work are spread far more widely, from construction workers to top managers."

    and

    "Rich World" = ODBC
    Cite: http://www.oecd.org/dataoecd/7/5/48111145.pdf
          See page 47 for more details.
    Correction: 12 of the 110, not 120

  8. We are using spread differently. on New Study Concludes Math Gender Gap Is Cultural, Not Biological · · Score: 1

    You are using spread as in “greater male variability hypothesis” (see article.) This is saying that while the average math skills of men & woman are equal, men have a higher variance (more genius & dunces). This would explain why Field prize winners are men (must be a natural born driven genius), but would not explain why most actuaries are men (Strong math skills are a must, but not mad genius). The authors, in the end, say they can explain the “average” difference via culture, but could not address the variability part. And I personally think you are right.

    However, I was saying something different. Woman have been avoiding areas that they should be good at (such as being accuracies) but they tend to clump in few fields. I think that’s mostly cultural.

  9. Still readying the artical but... on New Study Concludes Math Gender Gap Is Cultural, Not Biological · · Score: 4, Interesting

    I have seen an interesting counter argument to this.

    It states that females are biologically equal to males in maths abilities, but superior to men in language ability. It this is true, men would tend to crowd into math heavy fields (Since they have a natural advantage there) while females would be more widely spread out.

    Which is not exactly true. In rich worlds 80% of woman pile into 10 of the 120 job categories (Medicine, teaching, public service) while men are more evenly spread out.

  10. Re:No on In Favor of Homegrown IT Solutions · · Score: 2

    And
          Company paid training
          Pay Roll Tax
          Vacation leave with pay
          Family leave without pay (Why do you say that's a cost? With a group of about 20 you can expect 1 or more to be off missing for a extended period of time - need to build in some type of cushion.)

    A lot of time we go with outside vendors just because it's easier. We will get random regulatory requirements (in 2 years everything must be published in BRML). Do we want to retro fit our current process to that standard (and hire new staff to handle this new technology) or just go with a 3rd party vendor? In this case we went with a 3rd party vendor - because we know next year another huge, random, request will come down the pike.

  11. Re:The smart ones... on Facebook Could Spawn Thousands of Milionaires · · Score: 1

    You might want to review your formula. If the option price is less then the strike price this would result in a negative number, which implies the federal government is paying you with a negative tax - which there are not. Basically, if you want the lower long term capital gains you are going to have to take a risk.

    On the other hand, if your borrowed funds to pay to exercise your stock options (i.e. margin) you could end up owing your stock broker a pile of money.

  12. Not on Credit. on Facebook Could Spawn Thousands of Milionaires · · Score: 3, Informative

    Almost no stocks are bought on credit. And IPO's can't.

    It's been a while since I have been in that particular corner of the industry, so my figures might be a little out of date. But in late 1999 / early 2000 margin loans were less then 5 percent of retail accounts, and less then that for institutional accounts.

    Now, what you are saying makes a lot of sense if we were talking about pre-1930 gold standard no federal reserve economy tied to the farming seasons. Then you might have a leg to stand on.

  13. Milton Friedman on German Copyright Group To Collect From Creative Commons Event · · Score: 2

    Well, thats a nice sweeping statement, shame it doesn't mean anything. If you think it does, define the words "property", "functioning" and "democracy" - as precisely as possible.

    Does the emergence of property rights in China make it more democratic?

    Yes and No. China is certainly a more human place since limited property rights were introduced. And for those pessimist who see the glass as half full, property rights does not mean democracy – it is a necessary but not sufficient condition – hence the word “requisite”.

    Does the fact that many EU countries have a larger public sector than, say, Russia mean that they are less democratic?

    You hit the nail square on the head. Take a look at Boris Berezovsky. He criticized the Kremlin and then they stripped his T.V. Stations away from him. I have some issues with European media (like the captive French media) but this could not happen in Western Europe. Sure, the state can lean on you economically – but only so far. And you can always buy/rent a printing press from a private party instead of be censored by a state owned printer. One needs to have the rule of law to have democracy – and that rule of law must be extended to property.

    This is the problem with ideological rhetoric. It all sounds very good, and is carefully phrased to be almost impossible to disagree with, but is devoid of any useful underlying meaning.

    Not so. Read up on Milton Friedman. You may disagree with his conclusions – for example his OPPOSITION to the “Copyright Term Extension Act” - but he is not some empty headed shrill.

  14. Not your Will on Ask Slashdot: How To Securely Share Passwords? · · Score: 2

    Don't leave it in your will.

    First, the Will will not be read for a while - sometime weeks - after the death. So if you want something with a quick turn around time (like e-Bay) then don't.

    Second, a Will is a public document - which maans anybody can get ahold of it. Another issue.

    In most cases leaving instructions with your trusted lawyer should be sufficent - unless you are truely paranoid. (and considering this is /. ....)

  15. Accurate Simulation? on Ohio Emergency Responders Stage Mock Zombie Invasion · · Score: 1

    So, it an emergency. You want to prep your team of responders so they do well - but unlikely things always happens. Always the weird, unexpected thing. I would assume that a zombie attack would be a bit like the bird flue - (except a bit faster - the zombie virus vs flue virus - not the zombies themselves?) Is this a valid idea?

  16. Disruptive Innovation? on Netflix Loses 800,000 Subscribers After Qwikster Gaffe · · Score: 5, Insightful

    Didn’t we have an article here yesterday on disruptive innovation? To ignore quarterly profits and ignore your current customer base and boldly strike out with the best products?

    I am mention this not because I liked the Quikster idea – I hated it. But to point out that being innovative is hard. Any big radical plan will stir up the pot.

    As to management – All I can say is that they had the good sense to boldly put forward a plan – and then quickly kill it.

  17. Food Labeling on Is Online Property Real? Lawyer Says Sort-Of · · Score: 1

    The issue here is food labeling. By law when you sell a package of food it must have all of the nutritional data on it. In the bulk items you are citing the nutritional data is on the bulk package - not the individual packages. That’s the issue.

  18. Re:Speculation on Value of Bitcoin "Crashes" · · Score: 1

    So? BitCoin is really good at making change. So what? We can cut pieces of gold down to really small bits.

    The problem with a fixed currency and a growing GDP is deflation. As the value of BitCoin rise this will benefit people who hold BitCoins (i.e. the wealth) and hurt borrowers and those who want to borrow (i.e. young people want to borrow money to go to college or start business.)

    Inflation is bad. Deflation is worse. See the 1930’s as a example.

  19. Re:Bitcoin on Value of Bitcoin "Crashes" · · Score: 1

    If money is a store of value, you want to make sure money does not lose it value.

    In the past, when governments have issued to much money they have
            Debased the currency (mixed base metals with gold to make coins)
            Issued fiat money (Germany in the interwar period, Zimbabwe today)
    Etc. In all of these cases inflation ensured.

    If you tie the currency to a commodity the government is denied the easy fix inflation.

    Now, I don’t advocate this. There are real issues when you tie to a commodity. Deflation. Inability to realign the currency when international trade becomes out of whack, etc.

  20. Like Norway! on Iran Tried and Failed To Launch a Monkey Into Space · · Score: 2

    Where, by default, you get baptized as Luthern!

  21. Americans - not Black on The Genetics of Happiness · · Score: 4, Informative

    2 points.

    First - Yes - it has been obsered in the wild. That was the point of the study.

    Second - and this is imporant - they were testing "Black Americans". African gene are the most heterogeneous - which is what one would expect from the cradle of mankind. "Black Americans" genes are much more homogeneous since they were drawn from a limited pool. So while we can say this is true for Black Americans but it does not say anything about Africans in general.

  22. Hindu? on The Genetics of Happiness · · Score: 2

    They found a Hindu gene? Can you cite? And how close are they to fiinding the pentecostal gene yet?

  23. More E-Books on Looking For E-Ink Applications Beyond Ebook Readers · · Score: 1

    Amazon claims that it sold more Kindle e-books then phsycial books in 2010. (They still don't release kindle sales.)

    And yes, this is a limited sample

  24. Where Did I see this? on Company Offers Creepily-Realistic Masks of Clients · · Score: 1

    Now I was reading somewhere - can't rember - about a copanany unveiling a Personalized Anime Robot Girl? Maybe we can cross these technologies?

  25. Behavioral Theory on Ask Slashdot: Project Scope For MLB Robot Umpires? · · Score: 3, Interesting

    Hating the ump is not the “fun: part of the game – it’s a defense mechanism called Self Serving Bias.

    Remember, the fan is the “10th player” – they contribute to the success or failure of the game. When the picture pitches and fails, the fan has two choices.

    Rationally ascribe the failure to their team – and thus themselves – and recognize that they are a failure. Or they can protect their ego and blame the Ump.