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User: lachlan76

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Comments · 2,447

  1. Re:Easy! on CCC Says Apple iPhone 5S TouchID Broken · · Score: 2

    IIRC, toner has graphite in it, which is probably what makes this work.

  2. Re:Uses of tantalum? on Conflict Minerals and Cell Phones · · Score: 1

    The main problem with tantalum capacitors is that they tend to be low-voltage and will catch fire if you put a reverse voltage on them.

  3. Re:No redactions, so why the scanned PDF? on Yahoo and Facebook Join Google In FISC Petition After Government Talks Fail · · Score: 1

    I recall reading at one point that many law firms will print and scan documents to make sure that nothing else is in the file unintentionally (undo data, etc.).

  4. Re:The obvious reasons... on Obama Seeks New System For Rating Colleges · · Score: 1

    Small world---I'm a postgrad at Adelaide.

    As far as I know, most Commonwealth countries will run their universities that way. If you spend time on other things, you get a separate degree. I studied EEE and pure maths, which turned it into a five-year degree as in the US. I was originally unsure as to whether you meant that or that the education was more practical than theoretical.

    The need for residential accommodation in the US is always going to be there because of the population distribution. Things are a bit different here in that most of the population live in the capital cities; I've only known one person who has done an undergraduate degree outside of Adelaide.

  5. Re:The obvious reasons... on Obama Seeks New System For Rating Colleges · · Score: 2

    A degree here is nominally three years, but honours requires an extra year and a substantial project, which most people take up (this might not be the case outside of maths). Engineering is always four years; essentially one has to do the same work whether or not they receive honours.

    I can't speak for the trade-oriented claim, as I study in a research-heavy university. However, one isn't forced to take courses unrelated to their degree as in the US, which might be what you allude to. There isn't anything stopping you from spending an extra year to get a second degree mixed in, though.

    Personally, I like the fact that our system is more egalitarian---unless one chooses to move interstate and so cannot live at home, cost is not a factor. The reality is that everyone puts the top universities in their state first, so the better universities can pick off the top students. But then again, in the US those at the very top will end up in a big university with large amounts of funding, so one might argue either way.

  6. Re:Lets be clear about preferences on Wikileaks Party Making Questionable Deals In Attempt To Win Senate Seat · · Score: 1

    You can, however, mark both above and below the line, the former being used if you get the latter wrong.

  7. Re:What about a federal VAT on internet sales? on Amazon Forbids Crossing State Lines With Rented Textbooks · · Score: 1

    With the GST in Australia, you receive a tax credit for GST paid by your suppliers. Thus the "Value Added" part of the name---the business is only taxed on its portion of the product's value, coughing up 10% of the difference between what they bought their supplies for and what they sold their product for. In the end it all adds up to 10% of the total price.

  8. Re:there goes that on Aussie Public Servant Criticises Gov't On Twitter, Gets Sacked · · Score: 1

    The point of the exercise is to keep the public service apolitical, so I doubt that it will bother that many people. Members of the electoral commission cannot join political parties either, for instance. I'm not sure about the rest of the public service.

  9. Re:Wow ... on Blackberry 10 Sends Full Email Account Credentials To RIM · · Score: 2

    It's so that they can push to the device from servers that don't support that functionality. This is how my previous (Nokia E71) phone did push email, for instance. But in that case you provided your login details through their website and then connected the phone to your Nokia Mail account, so it was clear what was going on.

  10. Re:I don't get it. on D-Wave Large-Scale Quantum Chip Validated, Says USC Team · · Score: 1

    They are quite similar, though the Nature paper has been substantially edited (it is 30% shorter).

  11. Re:Faster than Light? on Quantum-Tunneling Electrons Could Make Semiconductors Obsolete · · Score: 1
  12. Re:It is a good read... on NSA Releases Secret Pre-History of Computers · · Score: 1

    Shor's algorithm allows factorisation in polynomial time---there are fundamentally-quantum algorithms that can give a greater speedup.

  13. Re:Eurocentric on Interpreting Global Flight Maps · · Score: 1

    Coming from Australia, almost every world map that I have ever seen is centred upon the prime meridian like this one.

  14. Re:First purchase on Ask Slashdot: Starting From Scratch After a Burglary? · · Score: 1

    Where I live a gun safe is required to be something like 1500kg or to be attached to the foundations, so it needn't be the case that they can just take them. I would be rather surprised if a significant number of burglars came prepared for safecracking after all.

  15. Re:hundreds of kilotons? no EMP? on Russian Meteor Largest In a Century · · Score: 1

    No---the calculations were performed during the Manhattan project, and it was determined that the atmosphere could not sustain a fusion reaction. Furthermore, practically all of the Earth's atmosphere is composed of non-fissionable elements (that is to say, those that consume rather than release energy in a fission reaction).

  16. Re:hundreds of kilotons? no EMP? on Russian Meteor Largest In a Century · · Score: 2

    EMP from a nuclear bomb occurs when gamma radiation ionises the upper atmosphere. A non-nuclear explosion does not produce gamma rays and so no EMP occurs.

  17. Re:Sparkfun on Ask Slashdot: Hobbyist-Ready LCD Touch Panel For Embedded Projects? · · Score: 1

    Another source is here.

  18. Re:But make sure to buy our cloud offering! on Worried About Information Leaks, IBM Bans Siri · · Score: 2

    The real reason is probably that in the past, if it realised that you were on a fast connection, it would turn into a supernode and use gigantic quantities of bandwidth.

  19. Re:SeeedStudio Nano OS 1 channel hardware and soft on Sigrok: An Open Source Logic Analyzer · · Score: 1

    The DSO Quad has digital channels as well, which is what I believe the grandparent to be alluding to.

  20. Re:Why the magnetics? on Raspberry Pi Production Delayed By Factory's Assembly Flub · · Score: 1

    Magnetics is a term sometimes used for all such components.

  21. Re:22 light years on New Exoplanet Is Best Yet Candidate For Supporting Life · · Score: 1

    As you approach c, though, length and time dilation work in your favour. 1g (of force, since constant acceleration is not possible for obvious reasons) might produce diminishing returns from the earth's perspective with respect to speed, but from the traveller's perspective the distance from earth to the destination will diminish by an equivalent factor---such is my understanding, anyway.

  22. Re:Wish I could understand the details of FFTs on Faster-Than-Fast Fourier Transform · · Score: 1

    If you're looking for an understanding of what the DFT computes, sure. But the OP was more interested in how it works than what it does, so all of the Matlab in the world won't do much good. If you try to actually write out the DFT matrix, you're overdoing it for this purpose---that it is possible to write the transformation from frequency-domain to time-domain as a multiplication by an invertible matrix is enough, since then the DFT is then just the solution of a system of linear equations.

    You don't need a deep knowledge of linear algebra for the finite-length discrete-time case, just the basics that everyone studying maths/science/engineering gets taught in the first couple of months of university. The point that I was trying to make was that for finite-length discrete-time signals, all that you're really doing is solving a system of linear equations like every man and his dog can do after a bit of training---that your coefficients happen to be uniformly-sampled complex exponentials doesn't really matter until you start thinking about efficient implementation.

  23. Re:Security on Faster-Than-Fast Fourier Transform · · Score: 1

    The introductory signal processing textbook that I have is Lathi's "Signal Processing and Linear Systems". If you don't want to see it from the signal processing side, then any book covering introductory PDEs should have some Fourier Series. Alternatively, have a look at this.

  24. Re:Wish I could understand the details of FFTs on Faster-Than-Fast Fourier Transform · · Score: 1

    The distinction I suppose is between conclusions that one can work out by inspection or immediate application of theorem, rather than by taking a detour through intermediate steps. It's probably not quite so cut-and-dry, but that's how I tend to see things. Such turns of phrase are just about part of the jargon.

    It almost functions as a punctuation mark to reassure the paranoid (which sometimes is practically everyone) that "no, this next bit really is what it looks like".

  25. Re:Wish I could understand the details of FFTs on Faster-Than-Fast Fourier Transform · · Score: 1

    Sorry, I meant to say a real exponential. It's probably true for more than one as well, but that means more than one line of Octave code to check (or some kind of conscious thought).