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User: Dan+Ost

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Comments · 1,973

  1. Re:Wow... what a worthless article on Obama To Nearly Double the Available Broadband Wireless Spectrum · · Score: 1

    What is the shape of the signal you are modulating? What band of frequencies are you actually using?

    Let's assume that I'm simply interrupting the signal to my antenna, effectively turning my transmitter on and off. No side band information required at all.

    While the rest of your post is informative and interesting, it doesn't apply since I'm not summing my carrier wave with side bands. I'm simply interrupting the carrier wave.

  2. Re:Wow... what a worthless article on Obama To Nearly Double the Available Broadband Wireless Spectrum · · Score: 1

    Very well, I concede the point. I clearly didn't understand commodore64_love's reply and would have been better off not responding.

    It is you that is confused, or more accurately, it is you that is clueless.

    Really, if you have never passed an undergraduate-level Signals & Systems course, you should not be arguing this topic.

    Yeah, you had a great post except when you got condescending.

    I don't mind being told when I'm wrong, but I do not appreciate your questioning my ability to participate in this discussion. It would have been more charitable to assume I was confused and or misinformed. No need for personal attacks (and yes, I passed signals and systems, but it was a long time ago and it's entirely my own fault that I haven't kept the material fresh).

  3. Re:Screenshot/Mockups on Firefox 4.0 Beta Candidate Available · · Score: 1

    Any browser that has at least 10% market share is relevant.

    Any browser that is standards compliant with the same standards as other relevant browsers is relevant by proxy.

    Firefox isn't going to go away soon. Even if it's the worst browser of the bunch, people will continue to use it until they can find a replacement for whatever extension they depend on.

  4. Re:Wow... what a worthless article on Obama To Nearly Double the Available Broadband Wireless Spectrum · · Score: 1

    I'm curious where you got this info. 500 megahertz is 500 megahertz and carries the same amount of data regardless where you put it. That's why a TV channel, whether it's located at 50 Mhz or 1 Gigahertz, still carries the same amount of data (~19 Mbit/s). The shifting up or down makes no difference. ----- Similarly the spacing is the same whether that TV station is in Very Lo VHF or Very High UHF. There's no need to increase the separation.

    You're confused. We're talking about a frequency band that is 500MHz wide (or, more likely, a set of narrower bands that sum to 500MHz in width). We are not talking about a 500MHz signal.

    Your example of TV signals sending 19Mbit/s is an excellent example of why analog TV was so inefficient: the 19Mbit/s signal sent the same amount of data even though the carrier wave was capable of carrying far more data. It was a huge waste. At the higher frequencies, you could have multiplexed the carrier wave and carried multiple 19Mbit/s signals on the same carrier wave (but dumb TVs wouldn't have known what to do with it).

  5. Re:Wow... what a worthless article on Obama To Nearly Double the Available Broadband Wireless Spectrum · · Score: 1

    Really? Care to explain what's wrong with that statement?

    Imagine a simple over-the-air protocol where you pass bits by modulating the amplitude of a full cycle. A 1Hz signal could pass 1 bit each second. a 1GHz signal could pass 1 billion bits.

    In real life, the frequency of the signal is often lower than the frequency of the carrier wave. Is that what you're thinking of?

  6. Re:Wow... what a worthless article on Obama To Nearly Double the Available Broadband Wireless Spectrum · · Score: 2, Interesting

    A 500mHz band has the same data capacity regardless of whether it starts at 0Hz or 60gHz.

    Umm, you know that's not even remotely true, right?

    The higher the frequency, the higher the potential data rate. However, the higher the frequency, the further apart the "channels" need to be to prevent them from interfering with each other. Also, different frequencies have different propagation/absorption characteristics.

    So a 500MHz band could be extremely valuable or worthless depending on where in the band plan it is.

  7. Re:Great on Firefox 3.6.4 Released With Out-of-Process Plugins · · Score: 1

    What do you mean?

    The executable code will be stored exactly once no matter how many processes show it. The data that is changed (and therefore copied) per process would be exactly the same data that is changed per thread, so the memory requirements should be near identical (not quite identical since memory is copied at the page level, but threads could share pages).

    What am I missing?

  8. Re:Great on Firefox 3.6.4 Released With Out-of-Process Plugins · · Score: 1

    At least on Linux, the memory footprint of spawned processes is minimal since the memory space is treated as copy-on-write.

    Because of this, there is no significant difference in the amount of memory used to spawn a thread or a process.

  9. Re:The problem with geothermal on Harry Reid Pushes Nevada As "Saudi Arabia of Geothermal Energy" · · Score: 1

    So you've got an example of an open-system style geothermal plant that creates toxic waste.

    Aren't most modern plants all closed systems?

  10. Re:HTTPS costs money on Firefox Extension HTTPS Everywhere Does What It Sounds Like · · Score: 1

    Maybe even EFF could eventually become a CA...

    I've seen this suggested multiple times. Any idea what the EFF's position is on this?

  11. Re:NoScript over-engineered on Firefox Extension HTTPS Everywhere Does What It Sounds Like · · Score: 1

    So how do you handle multiple tabs, some where you want to allow javascript, some where you don't?

    Noscript's whitelisting approach handles this cleanly and easily.

  12. Re:Cell towers? on US Dept. of Energy Wants Bigger Wind Energy Ideas · · Score: 1

    Solar would probably be a better fit for rural cell towers.

  13. Re:My Opinion, More BFE Buffalo Ridge Projects on US Dept. of Energy Wants Bigger Wind Energy Ideas · · Score: 1

    There's very little potential for wind power in the South East. The wind just doesn't blow much compared to, say, North Dakota (the state with the most potential for wind power if they ever get their distribution issues resolved).

    Also, there's lots of hydro electric production (at least in the area surrounding Tennessee) which keeps electricity cheap.

  14. Re:Hydraulic Lifts Pull Them Down Into Water on US Dept. of Energy Wants Bigger Wind Energy Ideas · · Score: 2, Interesting

    Sadly, while North Dakota has the most potential for wind power in the US, its grid was built and designed by a bunch of Co-ops that were interested in getting power to farm houses. As such, it isn't sophisticated enough to be able to be able export any significant amount of power.

    If they can upgrade their grid, then North Dakota could be a huge exporter of wind power.

  15. Re:only if the government mandates it on Why Intel Wants To Network Your Clothes Dryer · · Score: 1

    I've seen some new hotels with some interesting energy saving stuff.. If it doesn't sense anyone in the room, it shuts off the heat/AC, turns off lights, TV, etc.

    That's great if it works for you. If I try to save money by having the AC turn off during the day when nobody is home, then I end up having to tune the piano every 3 months instead of once a year (pianos don't like the humidity swings that happen when you're constantly turning the AC on and off).

    Tuning a piano costs about $100. My monthly electricity bill is less than $100, so to make that break even, running the AC during the day would have to account for over 1/3 of my electricity use. Which it doesn't. So it's not worth it.

  16. Re:Medical Radiation the New Demon on San Francisco Requires Cell Phone Radiation Warnings · · Score: 2, Insightful

    Beyond burns, what risks are associated with non-ionizing radiation?

  17. Re:Missing from the summary on Google Researcher Issues How-To On Attacking XP · · Score: 1

    My reading was that he got an acknowledgment indicating that they "received his report". That's not a meaningful response. A meaningful response would have been someone who is capable of groking the issue emailing or even calling him to ask relevant questions and negotiate (yes, negotiate!) an amount of time to effect a patch before the details are made public.

    The vendor is the one who needs to go the extra mile to convince the researcher that there is a net benefit to the users for delaying the publication of the bug (and exploit). The researcher has to balance the arguments of the vendor against the knowledge that every day that publication is delayed is another day that the users are completely vulnerable.

  18. Re:Missing from the summary on Google Researcher Issues How-To On Attacking XP · · Score: 1

    Also MS is a huge company. So it takes a little time to get their attention.

    It took him 5 days, but he found a way to get their attention.

    In my opinion, if the vendor doesn't make any attempt to contact you after 1 work day, you should assume they're not going to do anything in a reasonable amount of time without their hand being forced. Going public is the best way to force their hand.

    This guy waited 3 business days. It would have been charitable to give them 5 business days just to avoid even the appearance of impropriety, but he did the right thing: contact vendor, wait for evidence of a real response from the vendor, then go public when the vendor ignores you.

  19. Re:First thoughts on FAA Adds a Study On Adding Drones To Commercial Aviation · · Score: 1

    Even if it's not a whole lot of data, it will be broadcast with significant power to guarantee reception at both ends. This pollutes the spectrum for everyone else using frequencies near it or near harmonics of it.

  20. Re:First thoughts on FAA Adds a Study On Adding Drones To Commercial Aviation · · Score: 1

    Whoa, the airwaves are already crowded enough. Now you want them to carve out enough spectrum to get all the information needed to fly the plane remotely?

  21. Re:Pilots are expensive? on FAA Adds a Study On Adding Drones To Commercial Aviation · · Score: 1

    Like any union structure, your value is determined by how long you've been around. I know several retired pilots who make better money than some of the doctors I know.

    I also know a couple of new pilots who have a really rough deal...

  22. Re:Government debt on Where Will Your Next Gadget Be Made? · · Score: 1

    In 2005 our monetary base was about $800 billion. Now it's over $2 Trillion.

    Are you claiming that in the last 5 years, the federal reserve has printed 1.5 times the amount of money than was in circulation 5 years ago? That's pretty hard to believe.

    Where could I go for a more detailed account of this?

  23. Re:Honestly, I hope the US on Where Will Your Next Gadget Be Made? · · Score: 3, Interesting

    Corporations don't have any such preferations. They'll certainly not come back. They'll just swarm to the next flavour of the month outsourcing country.

    Actually, as oil prices increase, it'll eventually be cheaper to manufacture low margin goods here than to do it overseas and pay for shipping.

  24. Re:Proper Coding Practices on 'Month of PHP Security' Finds 60 Bugs · · Score: 2, Insightful

    But because the work-around for a bug is common knowledge doesn't make the bug any less of a bug. It does, however, give the devs an excuse for not fixing it, or making it lower priority than bugs that have no work-around.

  25. Re:Impressive on Smokescreen, a JavaScript-Based Flash Player · · Score: 1

    Quite frankly, any app that doesn't honor VI key bindings already has a strike against it.

    As to rendering pages as intended, it certainly wasn't rendering pages as I intended it to. Why do you think I use the noscript plugin in the first place?