Slashdot Mirror


User: rkww

rkww's activity in the archive.

Stories
0
Comments
242
First seen
Last seen
Profile
(view on slashdot.org)

Comments · 242

  1. seems straightforward to me... on Google-Backed Wind-Powered Car Goes Faster Than the Wind · · Score: 1

    Suppose the wind blows relative to the ground at ten m/s. That remains true regardless of how fast the model's moving. By careful gearing, arrange that the wheels of the model turn the propeller so it generates a wind of exactly the same backward velocity as the forward velocity of the model, regardless of its ground speed. Thus the propeller has subtracted out the ground speed. But the wind is still blowing relative to the ground (and thus our propeller) at 10m/s, and that difference between wind speed and ground speed can be used to turn the propeller faster and accelerate the model further.

    Eventually the wind-relative-to-ground power into the propeller will balance the friction and air resistance losses and the model will accelerate no further.

    Incidentally a test on a treadmill is not equivalent, because there's no air resistance losses.

  2. Re:Really bad PR for Google on Google Describes Wi-Fi Sniffing In Pending Patent · · Score: 1

    It's illegal in the UK

  3. Re:It's the database, silly on UK Home Office Set To Scrap National ID Cards · · Score: 1

    The whole question is how it is USED, and who gets access to the database behind it
    It's not just access to the database, but whether they make that access public. The Danish Railways ticket payment page allows you to 'post tickets to a phone number' - but they show the corresponding full name and address on screen. So you can use their page to look up the address and name associated with any phone number, including contract mobiles.

  4. sign everybody up for veterans' healthcare on Health Care Reform · · Score: 1

    Seems to me you already have a government-run healthcare system in the way of the Department of Veteran Affairs. Or am I missing something?

  5. Wikipedia proposes deletion of Go! page on Google Under Fire For Calling Their Language "Go" · · Score: 3, Interesting

    It is proposed that this article be deleted because of the following concern: Non notable language. All the sources seem to be papers and a book by the author of the language. Per WP:N, sources should be secondary sources independent of the subject.

    This template was added 2009-11-12 14:22

  6. Re:Mu. on 3 Strikes — Denying Physics Won't Save the Video Stars · · Score: 1

    Cory Doctorow's point is that nobody needs to accuse Mr ComaGuy of anything. If somebody else in his family, or a neighbour sharing his link, is accused, without proof, of violating copyright, coma guy would be cut off. As Doctorow writes, "collective punishment.. is outlawed in the Geneva Convention."

  7. Re:heh. on 3 Strikes — Denying Physics Won't Save the Video Stars · · Score: 1

    Funnily enough, directly opposite Cory Doctorow's column in today's Times is an opinion piece by Hugo Rifkind, saying that the main reason drugs ruin lives is because getting caught will ruin your life.

  8. Re:Older generation HPs on Choosing a Personal Printer For the Long Haul · · Score: 2, Informative

    Personally I'd go specifically with the LaserJet 5m

    I concur. Note that the 'm' suffix means 'Macintosh' and indicates that it comes with ethernet and PostScript 2 as standard.

  9. Re:Anti-theft systems on Tracking Stolen Gadgets — Manufacturers' New Dilemma · · Score: 1

    Mobile phones reported stolen in England can be blocked within 48 hours.

  10. Re:Phone Subsidy on US Cell Phone Plans Among World's Most Expensive · · Score: 1

    The UK deal also includes free wi-fi access at 9,500 sites across the UK, so I think they're broadly comparable. But the thing is, this deal is perceived to be very expensive in the UK in comparison to most mobile phone contracts, and the 24-month tie-in is too long. We'll have to wait and see what Orange and T-Mobile offer when they start supplying the iphone.

    FWIW, I use an (unlocked) iphone and pay $8/mo for 300 mins, plus $8/mo for 1gb data (3G), which suits me fine. That's less than $900 for 24 months, including the phone. Plus when I signed up for the $8/month plan I was given a Sony Ericsson C510, which I can sell, unused, when the contract expires in a year's time. (Actually I guess I could sell it now...)

  11. Re:Phone Subsidy on US Cell Phone Plans Among World's Most Expensive · · Score: 1

    It's even possible to get smartphones in the US for $99 or so (iPhone comes to mind).

    In the UK you can currently get an iphone for free on 24-month contract, with unlimited data, ten hours calls (to landlines or uk mobiles), 500 texts, no charge to receive calls within the UK, for US$60 / month. And it's (very likely) about to get cheaper, since two other phone companies will soon also be distributing them.

  12. Re:Stupid prices on US Cell Phone Plans Among World's Most Expensive · · Score: 1

    Seems to me the 15%-20% tips you pay are basically a VAT, although they're rarely mentioned in cost-of-living calculations.

  13. Re:2 Months is very fast on Steve Jobs Had a Liver Transplant Two Months Ago · · Score: 1

    >> The NHS treatment is free > No it's not. The NHS treatment is free at the point of need.

  14. Re:Not all Americans can afford health care... on US House Democrats Unveil a Health Care Plan · · Score: 1

    Under the UK model, you pay about 11% national insurance tax on your income (which in your case would be nothing), and the healthcare is free at the point of need. That's the beauty of a national scheme - you don't buy into it, it's just there financed out of everybody's tax payments. Note that there are residency requirements, although accident and emergency treatment is always free (even for visitors), and there are reciprocal arrangements with many other European countries.

  15. Re:2 Months is very fast on Steve Jobs Had a Liver Transplant Two Months Ago · · Score: 1
    According to the NHS website:

    Every year, an estimated 600 liver transplants are carried out in the UK. However, the number of people who need a liver transplant is much higher than the number of livers donated.

    Consequently, deaths from liver disease remain high. In 2007, there were more than 13,000 deaths from liver disease in England and Wales.

    The most effective way that people can help to reduce the number of deaths from liver disease is to join the NHS Organ Donor Register. See Useful links for more information.

    The NHS treatment is free, although private insurance might pay for a room with curtains.

    But as far as I can see, the only pertinent question regarding the story in hand is whether money changed hands for the liver itself. That's strictly illegal in the UK, and is the primary reason why people with money might seek a transplant abroad.

    I notice incidentally thatLiver Transplant India will do a live donor transplant for only $60,000. But you have to supply your own donor.

  16. Re:London Underground on Amtrak Photo Contestant Arrested By Amtrak Police · · Score: 2, Informative
    That rate should really be looked at in the context of the corporate/media parent page which tells us

    There really are some great locations on the Underground to make your filming project a success. Stations such as Charing Cross can be used exclusively with your own train, making the whole process more film-friendly.

    For the general public, the rule is quite straightforward: don't use flash photography - the exception proves the rule that normal photography is acceptable.

  17. Re:Non-profit? on Universities Patenting More Student Ideas · · Score: 1

    if we had a good idea we could claim legal ownership of it

    It used, in general, to be the case that ownership was shared, but the introduction of tuition fees has changed the balance. Since you are paying the University to educate you, the presumption must be that the rights to your invention remain with you. Compare for instance the old policy at Bristol University (google cache):

    In the event that an undergraduate student or a postgraduate student on a taught course generates intellectual property in the course of a University project, either solely or in collaboration (where the collaborators may be fellow students, members of University of Bristol staff, employees of a sponsoring organisation or collaborative partner or a combination thereof), he or she is asked to assign to the University any intellectual property that he or she may generate. Assignment will only take place in the event that intellectual property is generated. A student shall then give to the University all reasonable assistance to enable the University to obtain patents or other forms of legal protection for the intellectual property.

    with the current policy:

    As an undergraduate student or a postgraduate student on a taught masters programme, you own the IP you create in addition to being the inventor. This is because the law sees you as a customer of the University rather than an employee.

  18. really not very new... on Scientists Achieve Mental Body-Swapping · · Score: 4, Interesting

    I have beside me a book entitled Phantoms in the Brain (VS Ramachandran, foreword Oliver Sachs) first published in 1998, which suggests you should "have your friend stroke identical locations on both your hand and the dummy hand synchronously while you look at the dummy. Within seconds you will experience the stroking sensations as arising from the dummy hand". It goes on to describe how you can also experience touch sensations as arising from tables and chairs.

    Incidentally I'd recommend this book for anybody interested in perception; it's a readable introduction into the very strange perceptual phenomena that can be encountered by people with rare forms of brain damage, some of which give valuable insights into the way the mind works.

  19. Re:Oblig on Micron Demos SSD With 1GB/sec Throughput · · Score: 2, Informative

    Feeding a 4k digital projector at 24 fps requires 4096 * 2160 * 4 * 24 = 810 MB / second, so 128GB gives you about 150 seconds (and a 90 minute film eats 4.2 TB). There aren't, currently, many systems which can sustain that kind of data rate. It takes a lot of drives, and multiple layers of striping.

  20. Re:USB GSM modems... on Irish GSM Providers Asked to Track Users' Web Use · · Score: 1

    I imagine it's a reaction to the mobile providers moving into broadband, viz. http://www.3ireland.ie/broadband/datamodem.htm

  21. Re:rev on (Useful) Stupid Unix Tricks? · · Score: 1

    The rev command has got to be one of the most useless Unix commands I've ever come across. I can't imagine what it's for.

    An iscsi qualified name contain a reversed domain name:

    iqn.yyyy-mm.{reversed domain name}

    So foo.bar.bar -> bar.baz.foo:

    REV=`hostname | tr "." "\n" | rev | tr "\n" "." | rev`

  22. Re:romancer on Royal Society "Creationist" Resigns · · Score: 1

    Although Creationism has no scientific basis, some pupils believe its descriptions to be literally true. So how (and under which subject umbrella) should said pupils be enlightened?

    R.E. teaches people to respect others' religious beliefs, so it's obviously not the right venue; and in hard science an individual's personal beliefs should be irrelevant to their work, so that's not the right venue either.

    It seems to me that the natural home for the discussion of the reality of belief is Philosophy. But is that a science?

  23. Re:Gaaah! on 30 Years of the Lego Minifig · · Score: 1
    > quality toy such as LEGOS

    Lego is a trademark referring to a brand of bricks; unlike a Hoover or a Kleenex, it's not a generic term. So "some Lego bricks" not "some legos".

  24. Re:Did he take it well? on DNS Attack Writer a Victim of His Own Creation · · Score: 3, Informative

    Not true. I heard that a stand up comedian in London died on stage, and nobody noticed until the corpse went cold.

    True - it was Tommy Cooper

    In 1984, once again in a packed London theatre, the big man clutched his chest and slumped to the floor, his trademark red fez clinging precariously to his outsize head. The audience, millions watching live on television at home and more than 1,000 packed into Her Majesty'sTheatre, roared their approval - thinking it was part of the act.

    But the sound of the comedian gasping for breath, hauntingly amplified by his radio microphone, slowly stifled the laughter, as the crumpled clown fell grotesquely against the curtain.

  25. Re:Poetic justice on Identity Theft Skeptic Ends Up As Fraud Victim · · Score: 2, Informative

    > Thanks, and what might explain why they picked a charity for diabetes?

    According to Computing magazine, it's because "Diabetes UK ... did not require a signature to set up a standing order."