NLOS performance depends on a number of things, including how well the underlying technology can handle multipath and otherwise distorted signals. But the main thing is probably frequency; the higher the frequency, the worse the NLOS performance. WiMax is designed to run at many different frequencies, and the article fails to mention which one was in use.
The issues with latency and jitter, though, probably aren't as dependent on frequency.
Sure, bypassing DRM is simple enough. I've suggested loading an OCR font onto a book reader to do it, or even a digitally encoded font to make the OCRing even faster. But the fact that bypassing DRM isn't too hard doesn't make DRM acceptable, particularly when both the bypassing of the DRM and the process that it enables (reproducing the book without the permission of the copyright holder) are illegal.
Look at all the work of human creation. It's either new and perishable, or old, uncopywritable and eternal. [...] Same goes for "Fortran 66 for VAX" textbook.
I guess you've never done any retrocomputing. Or research. Or re-architecting. For instance, Slashdot users in general seemed quite interested in the code to the original Adventure when Dennis Jerz dug it up last year, and I converted it to run on modern machines. That would have been hard to do without a copy of the TOPS Fortran reference manual, which is quite readily available today precisely because it _didn't_ expire when people didn't think it was worth paying DEC for anymore.
But while we're doing that, let's not allow them to be stomped on while we rewrite our way of looking at things. Plain and simple, if you agree with supporting those limited time exclusive rights on distribution granted by copyright law, DON'T REDISTRIBUTE THE CONTENT until such time as is appropriate per the law and the content creator. While you're at it, write your congressmen / ministers / etc... and keep bugging them to change the laws. Write your authors and ask them to push for similar things to make this fair for all.
Not only could I die of old age waiting for the laws to change for the better (or any given copyright to expire), the universe could assume a constant temperature before it happens. "Obey now, change the law later" is simply a cry to knuckle under. The law isn't going to be changing, except to the worse. The only choices are to give in or to disobey.
How about this as an alternative: Pirate all you want now, under the unjust copyright regime we have currently, but quit doing so when copyright laws return to something more reasonable (say at a minimum, no DMCA 1201, copyright terms of considerably less than lifetime, no statutory damages for non-commercial infringement, and a narrower meaning of "derivative work", and no DMCA 512 counter-counter-notices).
You don't read much fan fiction do you? There's a lot of written work out there that is written by individuals and put out there free of charge; small stuff and large stuff alike.
And this stuff has to stop. It's all against copyright, even if some authors and publishers don't choose to enforce it. With a proper copyright regime the way God and Disney intended it, there would be no fan fiction without the explicit permission of the copyright holder; it's a serious violation of the expansive derivative work rights of the original authors, punishable by those same harsh statutory damages the RIAA seeks.
As far as I know, it is not known whether quantum computers can solve NP-hard problems in polynomial time. To say that they fail at NP-problems may be premature.
Seeing as it hasn't even been proven that P != NP for ordinary computers, it's very premature.
Im so sick of this masturbation fantasy all geeks seem to share. Its been around for at least the 80s and it turns out that people, except perhaps Japanese teens, do not want to fuck machines.
That is because no one has made a machine with the look and feel of Natalie PortmanSummer Glau yet.
The difference between getting a CS degree at MIT vs a CS degree at an average state college is your classmates. At MIT, you'll be surrounded by the best and brightest - people who were not only accepted, but chose to go to MIT, even though that meant working harder and taking out more loans. Many of your classmates will be the people starting the next Google, Facebook, or FedEx.
I got my CS degree at an average state college and one of my classmates started the original Google.
Remember, kiddies, the law is not on your side. I someone accidentally emails you a credit card number, and you use it, it's still fraud.
Yeah, but if someone accidentally emails me a credit card number and I "accidentally" connect up to an open wireless access point and enter that number at a phishing website, the law's not going to be looking for me, most likely.
"Despite the recognized potential of LEDs, their commercial use was initially limited because it was not commercially feasible to produce LEDs in green and other high spectral ranges. Through the process claimed in Professor Neumark's patents, it has become commercially feasible to produce such LEDs"
Really? Green LEDs weren't feasible until Neumark invented the process in 1988? What were all those green LEDs doing at Radio Shack before then?
It's not the AC frequency one. Household CFLs invariably have schnazzy electronic ballasts that operate way up in the tens-of-kHz range. They have less perceptible flicker than incandescents. And GE's bog-standard (not daylight) CFLs produce a color that I can't tell from incandescents, and my camera nearly can't. (I find the daylight ones to be excessively blue -- maybe it's just a contrast effect and I wouldn't notice if I replaced all of my bulbs, but I'm not really inclined.) Maybe your adverse reaction is caused by a fatal brain cloud.
I've seen plenty of flickering (and buzzing) household CFLs. I suspect the problem is insufficient filtering of the 60Hz rather than using a magnetic ballast. I've been replacing the (non-compact) T12 fluorescents in my house with T8 fluorescents with electronic ballasts (relax, greenies, the T12s are at end-of-life anyway), and they don't flicker, so it's probably QC or cheap-ass design rather than an inherent flaw in the technology.
As for the color... even the 85 CRI 3000K ones are quite distinguishable (in a negative way) from incandescent light. Some of the crappier ones are outright pink, most are yellowish (not in the same way incandescents are yellowish) and give things odd casts. There are 95-98 CRI phosphors available, but they are half the efficiency and not available in CFLs.
The human eye's 'refresh rate' is around 60 Hz... If you think you're being distracted by flicker from 100Hz, you're only fooling yourself.
That's nonsense. 120Hz fluorescents flicker noticeably. Higher-frequency LEDs don't usually have visible flicker, but they do cause odd visual artificts -- as you move your eyes sometimes they'll appear to move independently of the rest of the room, for instance.
Heads would roll when they figured out that all the clicks they got were fake and they had siezed thousands of innocent people's stuff. The courts would also think twice about approving stuff like this.
No, they wouldn't. And again, no, they wouldn't. We've already gone too far down the path of authoritarianism. In fact, most of the people raided would probably agree that the FBI did nothing wrong.
OK, I didn't bother looking up his net worth, but my net worth is negative. I owe a mortgage company, a car loan, and a couple of credit cards like just about every other working American.
Could be worse. When I first read that statement, I misread it as "I _own_ a mortgage company". Which is WAY worse nowadays.
"Intel's RCP platform rewrites the communication rules of Wi-Fi radios. Galinvosky explains that the software creates specific time slots in which each of the two radios listens and talks, so there's no extra data being sent confirming transmissions."
If you construct it with a pipe down the center, you can rotate it (a metallic pipe would reduce performance by not allowing you to use the split-reflector design, but PVC should work). Wind load would depend mostly on reflector construction.
Gotta cater to the masses who aren't going to RTFA anyway:-). I remember some excitement about the design over on the lumenlab antenna thread; I don't know if these are the same guys.
I do wonder, though, if a 4-bay bowtie might still be king if you just widened it a bit to move the peak down some. The Gray-Hoverman design is probably easier for the DIYer to fabricate, as it avoids the crossed phasing lines the 4-bay bowtie has.
The main reason the original Hoverman died out was that the bandwidth was not enough to cover the UHF (Ch 14-83) spectrum. This new variant appears to mainly improve on it by shifting its limited bandwidth down. The difference nowadays is that with the 700 and 800 Mhz bands removed from the spectrum used for TV, the basic Hoverman design DOES have the bandwidth to cover it, at least starting next year for "in-core" channels in the US.
I hate to dispel your "glass half-empty, and the full part laced with poison" world-view, but there are a few researchers out there whose agenda is to produce accurate and unbiased results.
That's "half-empty, leaking, and contaminated"(tm).
All I want is a big fat steak, a side order of fries, a case of beer, a bottle of scotch, a big fat joint, a backrub and a blowjob.
Is that too much to ask?
That's President's Day. Provided the president is Bill Clinton, anyway.
The increased price of oil should make this more viable. It may not have worked out at $40 a barrel, but right now if they can produce it at $80 a barrel it would be a marketable source. It's tough referring to some of this as vaporware - most of them are good ideas, but economics and technology haven't quite caught up with them yet.
But that has been claimed about these technologies for decades. Commercial fusion is always 20 years off. Oil shale production needs oil at $40-$50 barrel. When these points are reached, either the goalposts are moved or LOOK, OVER THERE, A DISTRACTION. Hence, vaporware.
And I wouldn't consider the Roomba to be a household robot. It's hard automation, much like a dishwasher. The fact that it moves doesn't change that. A robot which could do the dishes or laundry without special help (e.g. RFID dishes), that's more along the lines of what I'm thinking of.
1) Commercial fusion power production 2) Practical flying car 3) Oil from shale and other low grade sources (promised to be viable at $40-$50/bbl) 4) Household robots (or robot overlords, take your pick) 5) Cure for common cold
Slashdot Mirror
NLOS performance depends on a number of things, including how well the underlying technology can handle multipath and otherwise distorted signals. But the main thing is probably frequency; the higher the frequency, the worse the NLOS performance. WiMax is designed to run at many different frequencies, and the article fails to mention which one was in use.
The issues with latency and jitter, though, probably aren't as dependent on frequency.
Sure, bypassing DRM is simple enough. I've suggested loading an OCR font onto a book reader to do it, or even a digitally encoded font to make the OCRing even faster. But the fact that bypassing DRM isn't too hard doesn't make DRM acceptable, particularly when both the bypassing of the DRM and the process that it enables (reproducing the book without the permission of the copyright holder) are illegal.
I guess you've never done any retrocomputing. Or research. Or re-architecting. For instance, Slashdot users in general seemed quite interested in the code to the original Adventure when Dennis Jerz dug it up last year, and I converted it to run on modern machines. That would have been hard to do without a copy of the TOPS Fortran reference manual, which is quite readily available today precisely because it _didn't_ expire when people didn't think it was worth paying DEC for anymore.
Not only could I die of old age waiting for the laws to change for the better (or any given copyright to expire), the universe could assume a constant temperature before it happens. "Obey now, change the law later" is simply a cry to knuckle under. The law isn't going to be changing, except to the worse. The only choices are to give in or to disobey.
How about this as an alternative: Pirate all you want now, under the unjust copyright regime we have currently, but quit doing so when copyright laws return to something more reasonable (say at a minimum, no DMCA 1201, copyright terms of considerably less than lifetime, no statutory damages for non-commercial infringement, and a narrower meaning of "derivative work", and no DMCA 512 counter-counter-notices).
And this stuff has to stop. It's all against copyright, even if some authors and publishers don't choose to enforce it. With a proper copyright regime the way God and Disney intended it, there would be no fan fiction without the explicit permission of the copyright holder; it's a serious violation of the expansive derivative work rights of the original authors, punishable by those same harsh statutory damages the RIAA seeks.
I got my CS degree at an average state college and one of my classmates started the original Google.
Yeah, but if someone accidentally emails me a credit card number and I "accidentally" connect up to an open wireless access point and enter that number at a phishing website, the law's not going to be looking for me, most likely.
From your linkedpress release:
"Despite the recognized potential of LEDs, their commercial use was initially limited because it was not commercially feasible to produce LEDs in green and other high spectral ranges. Through the process claimed in Professor Neumark's patents, it has become commercially feasible to produce such LEDs"
Really? Green LEDs weren't feasible until Neumark invented the process in 1988? What were all those green LEDs doing at Radio Shack before then?
I've seen plenty of flickering (and buzzing) household CFLs. I suspect the problem is insufficient filtering of the 60Hz rather than using a magnetic ballast. I've been replacing the (non-compact) T12 fluorescents in my house with T8 fluorescents with electronic ballasts (relax, greenies, the T12s are at end-of-life anyway), and they don't flicker, so it's probably QC or cheap-ass design rather than an inherent flaw in the technology.
As for the color... even the 85 CRI 3000K ones are quite distinguishable (in a negative way) from incandescent light. Some of the crappier ones are outright pink, most are yellowish (not in the same way incandescents are yellowish) and give things odd casts. There are 95-98 CRI phosphors available, but they are half the efficiency and not available in CFLs.
That's nonsense. 120Hz fluorescents flicker noticeably. Higher-frequency LEDs don't usually have visible flicker, but they do cause odd visual artificts -- as you move your eyes sometimes they'll appear to move independently of the rest of the room, for instance.
No, they wouldn't. And again, no, they wouldn't. We've already gone too far down the path of authoritarianism. In fact, most of the people raided would probably agree that the FBI did nothing wrong.
Could be worse. When I first read that statement, I misread it as "I _own_ a mortgage company". Which is WAY worse nowadays.
If you construct it with a pipe down the center, you can rotate it (a metallic pipe would reduce performance by not allowing you to use the split-reflector design, but PVC should work). Wind load would depend mostly on reflector construction.
Gotta cater to the masses who aren't going to RTFA anyway :-). I remember some excitement about the design over on the lumenlab antenna thread; I don't know if these are the same guys.
I do wonder, though, if a 4-bay bowtie might still be king if you just widened it a bit to move the peak down some. The Gray-Hoverman design is probably easier for the DIYer to fabricate, as it avoids the crossed phasing lines the 4-bay bowtie has.
The main reason the original Hoverman died out was that the bandwidth was not enough to cover the UHF (Ch 14-83) spectrum. This new variant appears to mainly improve on it by shifting its limited bandwidth down. The difference nowadays is that with the 700 and 800 Mhz bands removed from the spectrum used for TV, the basic Hoverman design DOES have the bandwidth to cover it, at least starting next year for "in-core" channels in the US.
But that has been claimed about these technologies for decades. Commercial fusion is always 20 years off. Oil shale production needs oil at $40-$50 barrel. When these points are reached, either the goalposts are moved or LOOK, OVER THERE, A DISTRACTION. Hence, vaporware.
And I wouldn't consider the Roomba to be a household robot. It's hard automation, much like a dishwasher. The fact that it moves doesn't change that. A robot which could do the dishes or laundry without special help (e.g. RFID dishes), that's more along the lines of what I'm thinking of.
1) Commercial fusion power production
2) Practical flying car
3) Oil from shale and other low grade sources (promised to be viable at $40-$50/bbl)
4) Household robots (or robot overlords, take your pick)
5) Cure for common cold