Slashdot Mirror


User: hankwang

hankwang's activity in the archive.

Stories
0
Comments
1,292
First seen
Last seen
Profile
(view on slashdot.org)

Comments · 1,292

  1. Re:Google Needs To Get Their Ass In Gear on Android Malware May Have Infected 5 Million Users · · Score: 2

    "imei and imsi (sufficient info to clone your sim card)" - bzzt. For cloning, you need the secret cryptographic key as well, stored in the SIM, and which you can't even get with a smart card reader.

  2. Re:It is about time on Scientists Organize Elsevier Boycott · · Score: 1

    Go to the library? Last time I tried, they told me that I need to be affiliated with the university to be able to log in to one of their computers and download a paper. They don't have so many journals in the paper version nowadays.

  3. Re:DNSBL's maybe? I'd suspect that @ least... apk on One Million Web Pages Attacked By Lilupophilupop · · Score: 1

    I was using my ISP's DNS, but lilupophilupop.com doesn't resolve either when I use a DNS server of which I'm sure that it is not subscribed to any black lists.

  4. Re:Resolving lilupophilupop.com... failed: Name or on One Million Web Pages Attacked By Lilupophilupop · · Score: 4, Informative

    Strange; earlier today (when I submitted the story), they were online.

    The site redirected to this (http changed to hXXp): hXXp://plac41eadmi.rr.nu/n.php?h=1&s=sl
    which redirected to hXXp://www3.smartnetworkzgx.Kwik.To/?92ut2bc2=Xafe2G%2BXmmKsk9Hb2KuYmuPir52umJ6tpuGxZZPJZ9agmKKkpJiY

    which contained an obfuscated script that went on like this:

    var xrPke='QiqpR';if('xmFR'=='ZqpZB')aSetrA();}
    function ty6HJA7y3z10n0s(rFOaSw){var NLgXo="3845";var vJtxnk=132;var PmBBXq=[];var uqrx;var lTrQTu=0;

    But also the kwik.to website is offline now.

  5. Re:Bullshit on Edison Would Have Loved New Light Bulb Law, Says His Great-Grandson · · Score: 2

    Many people simply do not have that kind if liquidity, and one thing that ties up capital is buying stuff that has a freakin' 20 year payoff.

    The calculation showed that you save $8,40 per year on a $25 investment, so the pay-off time is about 3 years.

    Even if you have to borrow money against 8% interest to make the investment, you'd have paid down the loan in 3.5 years from the savings.

  6. Re:Kill timezones already on Samoa and Tokelau Are Skipping December 30th · · Score: 5, Insightful

    Switch the entire world to UTC (and kill am/pm since they'll no longer correspond to morning/night in half the world). ... just the idea of eliminating "2pm your time or mine?" makes it worthwhile.

    That might be convenient for making appointments for telephone conferences, but it really sucks if you actually travel to such a timezone and need to schedule your daily program; then you will have to calculate the offset relative to your old place every time you wonder whether it is already lunch time, or whether the shops/offices are open. Not to mention that having the date and day of the week change in the middle of the day might also be rather inconvenient: what does "see you on Wednesday" mean?

    And as for appointments: calendar applications already take care of calculating the time zones while scheduling meetings.

  7. Re:We do, it's called JavaScript. on Why Can't We Put a BASIC On the Phone? · · Score: 1

    Javascript?? In order to get anything done in javascript, you need to grasp OOP, HTML, and DOM just to deal with user input/output; deal with implicit string/number conversions (which vary between browsers). Moreover to that that debugging javascript is even more horrible than in BASIC. In BASIC I could insert print statements to see what's happening. In javascript I have to resort to alert() which requires me to click OK all the time.

  8. Re:All you negative people... on Linux-Powered Christmas Display Puts Rudolph To Shame · · Score: 1

    Eat enough legumes (the seeds/bean part) raw and there's a good chance of death.

    Yes, but the topic was grains.

    It's more nutritive to let a ruminant eat the grasses/grains and then eat the ruminant (not to mention the energy and input costs involved with industrial crop growing).

    This is an utterly ridiculous statement. In terms of dry mass, the Feed conversion ratio of ruminants is about a factor 30 when going from grain to meat. So instead of not utilizing 1% of the grain, you throw away 97%.

    Gliadin, a gluten protein and the cause of celiac disease, is an indigestible protein that ... causing inflammation, even in non-celiac individuals.

    The wikipedia article on Gliadin does not state that it is indigestible, only that it is not attacked by stomach acids. From the Triticae glutens article, I get the impression that certain forms of gliadin (a small fraction of the gluten) are indigestible, but then, nutritional fiber is also indigestible, so that isn't really a problem. The article on celiac.com is written by an editor. The abstract of the original article, Gut 2007;56:889-890 doi:10.1136/gut.2006.118265 does not make strong statements about the health implications of non-CD individuals, other than " we hypothesise that the innate response is common in patients with and without CD, whereas the adaptive response is exclusive of susceptible patients with CD." (we hypothesize = not confirmed by the study)

    Here's a good sumary of the trouble with eating high amounts of carbohydrates.

    No scientific studies cited. I see various links to other blogs; links to FDA and the American Diabetis Association are called "our government suggests" and "mainstream opinion", as if that makes them untrustworthy. Why should I believe an arbitrary blogger's theory?

    A high omega 6/3 fats ratio in the diet promotes many diseases and should be avoided.

    OK, this is a scientific paper (and I didn't see it refuted from a quick google). Interesting; I din't know that there was such a difference between unsaturated fatty acids.

    The pesticides, fungicides, antibiotics, colouring, preservatives, etc., present are obviously not good for you.

    I could agree with you on the first three, but not on the latter two. For the colorants one could say that they don't serve a real purpose (so why take the risk), but I'd say food preservatives have made food a whole lot safer by preventing spoilage of otherwise perishable products.

  9. Re:All you negative people... on Linux-Powered Christmas Display Puts Rudolph To Shame · · Score: 1

    "[Grains] are difficult for all to digest, have poor protein profiles, have toxic proteins, and mess with hormone balance (insulin in particular). They require complex preparation to make them non-toxic, such as soaking or cooking for extended periods. "

    Can you provide pointers to scientific research that supports these statements? The only one that makes some sense is the first one, but then, most foods are difficult (for humans) to digest when raw; are you proposing to eat only fruits, milk, and raw meat?

  10. Re:Grammar editors like me got scared off Wikipedi on The Curious Case of Increasing Misspelling Rates On Wikipedia · · Score: 1

    "was immediately reverted with "didn't cite sources" " - Could you provide a link to the diff? One problem could be a lacking edit summary in combination with extensive rearranging of text. In such cases, it is difficult for an other editor to see what changed by looking at the diff. If the edit comes from an anonymous IP address and does not have an edit summary, a hurried editor could misunderstand your intentions.

  11. Re:Sometimes it saves money and frustration on Do You Really Need a Smart Phone? · · Score: 1

    I tried Dvorak on my htc Android phone, but I didn't feel that it served much of a purpose when not touch typing. But more importantly, there was no text prediction nor support for long-press special characters like in the native htc keyboard.

    (posting this from my phone, via Avantslash to make slashdot smartphone-friendly)

  12. Re:toys with molten metal on The Most Dangerous Toys of 2011 · · Score: 1

    "you'd melt some metal (lead? or something with a low melting point anyway)" http://en.m.wikipedia.org/wiki/Tin_soldier

  13. Re:Android has many problems on Why Developers Still Prefer iOS To Android · · Score: 1

    I think those prices per click are the estimates that the advertiser sees in Adwords for top placement (being the first ad in the list) and based on average clickthrough rates. The actual price per click goes down if the ad has a good click-through rate.

  14. Re:They got paid for this... on Adblock Plus Developers To Allow 'Acceptable' Ads · · Score: 2

    "I am a power user" - I don't think that there are slashdot posters who might say: "I am a casual computer user, not a power user".

  15. Re:This is nothing new... on Physical Models In an Age of Computers · · Score: 1

    No, it's the work done by the prop that heats up the air. Any heating up near the walls is balanced by cooling down elsewhere in the tunnel. The interesting thing about friction heat in a gas pipe is that a temperature increase causes the gas to expand, which costs exactly the same amount of energy as you put in. The net effect is that the gas expands along the pipe without a net increase in temperature.

  16. Re:Celebrity culture... on How Photoshopped Is That Picture? · · Score: 4, Informative

    And even before photos are loaded up in Photoshop the celebrity has already been loaded up with a pound of makeup, sat under carefully positioned lights and been photographed by a professional.

    Indeed. Dove Evolution video clip

  17. Funny that you mention alpha, since Wikipedia says: "In some fields, for example nuclear and particle physics, it is common to express statistical significance in units of the standard deviation Ïf of a normal distribution."

  18. Re:1,382 degrees F on NASA Creates Super-Black Carbon Nanotube Coating · · Score: 1

    Would layering this stuff between air gaps suck in more heat than you lose in temperatures that cold?

    Unfortunately not; such a hypothetical material would allow you to create a temperature difference out of nothing. The best way to limit radiative heat transfer is by having two reflective surfaces, such as aluminum foil. In addition to that, you need to prevent heat transfer due to air convection. That's why thermostat flasks are vacuum and shiny on the inside.

  19. Re:What kind of problems does it create for pilots on FAA Goes To the Web To Fight Laser-Pointing · · Score: 1
    I believe that the risks are a bit exaggerated. Yes, the laser beam is quite bright, even at long distances, but at a kilometer, the spot is about a meter in diameter for a laser with a cheap lens. At 1 mW power, that is about 100 nanowatt entering the eye, an amount similar to looking at the laser spot on a white surface from half a meter distance. Hardly something that will blind you, even at night.

    Moreover, keeping the spot steady on a target, moving or not, is impossible with a hand-held laser. That will reduce the time-averaged power by another factor 20 or so.

    I have pointed class-2 laser pointers at my own eyes plenty of times, half a second at a time. Both green and red lasers. It's really no big deal. Class 2 is, by definition, not harmful for exposures less than 0.25 seconds.

    That said, I can understand that they don't want people to point lasers at planes. It's a matter of time before someone does it with a tripod-mounted class 3a laser (or even a 500 mW class 3b laser as was featured on /. a few months ago), in green or blue color (more blinding effect for a dark-adapted eye), which is definitely dangerous. This way, they raise public awareness that intentionally trying to hinder aircraft pilots, succesful or not, is unacceptable.

  20. Re:Tap Energy of Volcano? on In Bolivia, a Supervolcano Is Rising · · Score: 1

    I have a hard time believing that St. Helen's toal energy is only about 1/5,0000 of our total annual energy consumption.

    I think that was just the energy of the explosion (kinetic energy of the stuff that was blown into the air). It doesn't count the thermal energy of all that molten rock. For melting 1 cubic km of rock, count on about 3e18 J.

  21. Re:Before anyone else says it... on Cutting Open a Heatsink Heatpipe To See Inside · · Score: 1

    Vacuum is an excellent heat isolator. It's used in between double glassed windows for example.

    No, it isn't, at least not for regular cost-sensitive applications; they use argon or air. Vacuum insulated glass exists, but it has a lot of visible spacers between the glass panes to deal with the 10 tonnes per square meter (2000 lbs/sq ft) of atmospheric pressure.

  22. Re:Before anyone else says it... on Cutting Open a Heatsink Heatpipe To See Inside · · Score: 1

    But why couldn't you just expose the processor to the vacuum of space?

    Radiative heat transfer at temperatures around room temperature (300 K) is about 6 W/(m^2K). For a CPU that is 10 cm2 that is allowed to be 50 K above environmental temperature, you would be able to radiate away around 0.3 watts, which is unpractical. If you could expose the CPU to the outside of the satellite, shaded from direct sunlight, it would see the 4 K background temperature in space and could radiate about 600 W/m^2, or about 0.6 W, which is still not much.

    To make things even more complicated, a silicon chip does not only have a maximum temperature, but also a minimum temperature. You don't want the chip to cool down to 4 K when it's idle. I think a typical satellite is constructed as a thermos bottle (the silver or gold-colored foil wrapping that you see in science museums acts as an infrared reflector). I think they use heat pipes to transport excess heat to big radiators on the outside, although I'm not sure of that; maybe the heat needs to stay inside the satellite anyway to prevent it from cooling down too much.

  23. Re:Security is NOT an issue with The Cloud. on NASA CTO Says Help Desks May Disappear · · Score: 1

    I, as a manager, have absolutely no reason to doubt the safety of any data put in The Cloud.

    Bravo! this has been reposted only 35 times over the past couple of years and keeps on getting moderated as funny. Some jokes don't get old, apparently.

  24. Re:First they ignore you... on Nokia Preps Linux OS For Low-End Smartphones · · Score: 4, Interesting

    Just having top and powertop on my N900 allows me to identify battery-draining apps in minutes, unlike my friend with Android

    The Android Market has a Terminal Emulator app which will give you a command prompt that will let you run (a bare-bones version of) top, which is already part of the Android OS. Or you get PowerTutor from the Market for a more fancy graphical user interface. Or you go to Settings/About Phone/Battery/Battery Use.

  25. Re:Easy reason on Wikipedia Losing Contributors, Says Wales · · Score: 2

    Most of the remaining work to be done is article maintenance, and filling in mundane details of niche articles or emerging fields.

    I disagree. It is true for most things that I know about enough to be confident in writing about without further research (i.e., physics-related stuff), but when I look up scientific-ish topics outside the more geeky fields (math, physics, computer science), I encounter articles all the time that could be improved vastly.

    Think about plant species. I look out of the window and see hedera helix, which has an article covering the basic information but feels way too short for such a common garden plant and invasive species. I look at a common house plant in front of me and get an article that is just two paragraphs. Other example: An over-the counter drug, bromhexine, with only a very brief article.