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User: mattj452

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Comments · 26

  1. Re:Rates of cancer haven't increased on Portland City Council May Ask FCC To Investigate Health Risks of 5G Networks (inverse.com) · · Score: 1

    These radars were transmitting Megawatt powers - more than your microwave oven at home. I'm most studies would confirm an increased risk of brain cancer for people sticking their heads into live microwave ovens.

  2. Re:Why 'united kingdom' tagged british phone booth on Kilogram Gets Controversial; Why Not Split the Difference? · · Score: 1

    as the article's image/icon ? kilogram has nothing to do with united states, unfortunately.

    Well it does. One Pound (the U.S weight that is, not the British coinage) is defined as 453.59237 grams. So your definition relies very much on the piece of platinum diluting away in a French vault.

  3. Re:Really! on BSG Prequel Series Caprica Canceled · · Score: -1, Offtopic

    Cylons are the niggers of the future!

    Did you stop watching after season 3 of BSG?

  4. Re:This is second place on Proving 0.999... Is Equal To 1 · · Score: 1

    I suppose. On the other hand, I can explain that the sky is green without having to prove it...

  5. Re:This is second place on Proving 0.999... Is Equal To 1 · · Score: 2, Interesting

    Unfortunatelly, your proof is not valid. You are trying to prove something which you postulate in your first step. How do you know 1/9 equals 0.1111111.... ?

  6. Re:BANDWIDTH FAIL on Profs Bring TV Spectrum Free Wi-Fi To Houston Area · · Score: 1

    Whitespace technology already exist. Although people surely want to legislate slightly differently, it would be entirely possible to use the existing 802.11 stack to achieve this. 802.11G uses 20MHz per channel, and there are half rate and quarter rate specifications (using 10MHz and 5MHz). In addition, 802.11h brough you a dynamic channel switching mechanism. It is technically used to avoid radar signals on the 5GHz band, so some additions to the standards on when to change (if change is necessary!) in the lower bands. For your comment regarding DSL: Sure they can, but people want to be more mobile nowadays, without being bound to their home. I'm not saying 802.11 is the best standard for this, all I'm saying is 802.11 would work.

  7. Re:What can they hope for on DARPA Wants Extreme Wireless Interference Buster · · Score: 2, Informative

    I'd imagine that not only will they look at those techniques (FEC, spread spectrum etc), but also techniques related to intelligent channel switching when a channel is jammed. Also, there are other methods than noise to interfere with the reception. For example, sending out false signals, repeated signals etc which also needs to be considered.

  8. Re:I call BS.kg on EPA Proposes Grading System For Car Fuel Economy · · Score: 1

    'Greenhouse gas emmisions'? Does this include the source power generation? Of course not, because some regions use wind/solar/nuclear, which have a vastly different greenhouse gas emmsiions then others.

    Not only different per region, but it would also differ in time, especially in regions where it gets cold in the winter. A greenhouse friendly energy source can be happily used during summer, but once the chilly winds starts coming about, people will turn up their heating and suddenly the fine wind farm up the road can't handle it. The energy will be upped by the upstate coal power plant. The margin energy suppliers (i.e. on-demand suppliers) are always coal, oil or gas since no other source can increase its capacity. The result is that your nice Prius will run on clean energy in the summer, but a mixture of green and not-so-green in the Winter. Hence, not so easy to rate as the others. In the ratings defence I do like the system but if it is going to have any effect, there is a need for either a carrot or a whip. In the UK, the vehicle tax is based on CO2 emissions, which I think is a decent system although far from perfect since hybrid cars are rated on their 'best' fuel even though it is up to the driver to decide which fuel to use.

  9. First? on Brazil Using Smartphones For Planning the Future · · Score: 5, Interesting

    The Nordic countries (Sweden, Norway, Denmark, Finland in this context) have all abolished the manual census counting years ago. In Sweden, the last census survey was made in 1990. Since then, an automatic system has been in place to which you report whenever you move, get married, have kids etc (well, I think the hospital is reporting children). Formally, this has to be made on paper so it is technically not a fully digital system. However, since the introduction of E-ID's a few years back, it has been possible to do this online, beating Brazil with at least 4 years.

  10. Re:Answers to all TFA questions on Automated Language Deciphering By Computer AI · · Score: 1

    The process they describe assumes the characters are known, alphabetic and words are somehow separated. So I guess until the characters have been separated, it won't do much good on Rongorongo.

  11. Re:Also on Tracking Down a Single-Bit RAM Error · · Score: 1

    The problem he is experiencing is most likely a hard drive problem. 1. He is consistently experiencing it. A restart of the computer would most likely having 'expr' end up in a different location in RAM memory, so the error should not be consistent. 2. There is nothing here indicating a single bit error. He sees that he suddenly tries to read from an invalid location. The problem can be either that the read address has been corrupted, or the instruction itself (i.e. it shouldn't have been a read). Also, there is nothing saying that this is the only place the fault occurs, only that this is the first place it occurs. The rest of the program may very well be corrupt, as can the entire sector.

  12. Re:it's not a base station on Israel Blocks iPad Imports, Citing Wi-Fi Transmission Regulations · · Score: 1

    There is nothing stopping you from creating an ad-hoc network in the 5 GHz band. Also, in the 5GHz band, 802.11h is implemented as well. One of the requirements is to randomly select the channel to be used (when you create the network that is). Third, the IPAD hasn't been WiFi certified yet. Check WiFi Alliances website: http://www.wi-fi.org/search_products.php?search=1&advanced=1&lang=en&filter_company_id=5&filter_category_id=&filter_subcategory=&filter_cid=&date_from=&date_to=&x=47&y=9 Now, not having it certified doesn't mean that it is automatically banned, but it sure doesn't prove that the device is legal in Israel or Europe (where it is not yet being sold).

  13. There is already a technical solution for this on Wind Farms Can Interfere With Doppler Radar · · Score: 1

    Doppler radars in reasonably modern military systems can find hovering helicopters (doppler radars normally filters stationary objects) by detecting the rotating blades. Although weather radars operate in a different frequency range, the problem they have is effectively the same or actually the opposite - they want to mask the "helicopters".

  14. Re:Not just MET radar on Wind Farms Can Interfere With Doppler Radar · · Score: 1

    The UK MOD has been killing windfarms at the planning phase due to 'unspecified interference' with RADAR systems. Apparently they cause a blind spot directly above.

    So THAT's the reason wind farms have become popular in Afghanistan and Iraq!

  15. lim-0 on How Heavy Is a Petabyte? · · Score: 3, Insightful

    Since data storage is just one case of transmission channel (just sending it through time, not space) you can store the 6 Petabytes in a transmission. All you need to do is place one sender here, and one eh, let's say at the end of the Universe. As long as the data is being transmitted, it doesn't really weight anything. Yes silly question will get a silly answer :)

  16. Article has been replaced on Swedish Court Says IP Numbers Privacy Protected · · Score: 5, Informative

    The article had a lot of errors and DN has replaced it with a new article: http://www.dn.se/kultur-noje/nyheter/ny-dom-paverkar-inte-ipredlagen-1.894500 In short: They can still do what they want, but they need a permit for it.

  17. Air Guitar Hero. Finally! on Sony Unveils PS3 Motion Controller · · Score: 1

    I can't wait...

  18. Re:Other bases? on New Pattern Found In Prime Numbers · · Score: 1

    - In binary, primes start with 1, and end with 1.

    Not true. 2 is a prime and represented by 10 in binary.

  19. Blench Treetops on NASA In Colbert Conundrum Over Space Station · · Score: 2, Funny

    Just call it Blench Treetops (Anagram for Stephen Colbert), which you should do if you're on board it...

  20. Re:ummmm on Schneier Calls Quantum Cryptography Impressive But Pointless · · Score: 0

    No, but Chuck Norris does...

  21. Re:TCP, SMTP, POP3, HTTP, ... on Worst Bug or Shortcomings in a Standard? · · Score: 1

    IPsec works underneath the TCP layer, so I would hardly say it's too low level ;)

  22. Re:Anybody know the specs? Spectral/Spatial res? on Ariane 5 Deploys French Spy Satellite · · Score: 2, Interesting

    According to this http://www.home.alcatel.com/vpr/vpr.nsf/DateKey/28 072004_1uk/ the manufacturer of the HiRes camera is Alcatel. It seems that they have similar equipment on spot 5 (http://www.spotimage.fr/html/_167_238_.php?group= 0104/). However, It might be a if you want 1m satellite images!) Sorry for the formatting...

  23. Re:Can vapor be distinguished from radios, over ti on Weather Monitoring Frequencies Subject to Pollution · · Score: 1

    Unfortunatelly, I don't think it's that easy. I think the best you can do is to create (encode) a pulse in such way that all other pulses would be considered pure noise. The real problem here is that there are requirements on how high the noise can be and still have a working radar... If you have too much noise, then it would drown the radar signal completely

  24. Re:Ca Radar on Weather Monitoring Frequencies Subject to Pollution · · Score: 2, Interesting

    I believe the reason is that you don't want to get reflections from objects far away. A good way of doing this is to use frequencies that dampens the signal alot.

  25. Re:Weather data weak on Weather Monitoring Frequencies Subject to Pollution · · Score: 2, Interesting

    I've seen somewhere that if you say "Tomorrow will have the same weather as today", you will have a probability of 73% to be correct. The meteorologists calculate the weather by creating a stochastic model, then simulate it maaany times in order and then get a kind of average weather from all the simulations. The probability of them being correct is about 78%...