Li-Poly batteries got their bad rap because early Lithium-Ion batteries were more prone to explosion than other types of batteries. The newer Lithium-Polymer batteries have reduced the risk of explosion due to overcharging or incorrect charging.
Their problem now is that Lithium reacts very violently when exposed to air. A Li-Poly battery that gets cracked (ie if your RC plane crashes hard enough) will not explode, but it will get *extremely* hot -- somewhere around 1500F (one-thousand five-hundred degrees fahrenheit) -- causing the remainder of you plane to go up in flames.
This is not to say don't use Li-Poly becuase they are dangerous. The charge density and the weight are excellent -- just be aware of what the dangers are.
"What information does he have that says that the Army can't do this yet?"
Maybe the DARPA contract that hired Georgia Tech to design a UAV helicopter? Incidentally, this is the lab I work for. A choice quote from a high ranking army official at a recent demonstration of the GTMax was, "It is criminal for this thing to be sitting in the lab". He was impressed, and the Army wants one.
I've seen two similar studies. In one of them, they compared full trains to full cars, and the fuel consumption per person was pretty close with an edge toward cars. The problem with those numbers is that many car commuters have only 1 person per vehicle, so depending on the size of the car, you actually have a consumption rating of 4 or 5 times that of the full train. (of course, the train isn't always full either)
In a different study, they compared cars to trains to airplanes, again on a fuel consumption per person basis. The airplane 'won' that comparison because (according to the study) they typically operate at 90+ percent capacity. The train efficiency was drastically crippled because they claimed that trains operate with less than 40% of the seats filled, and the kicker was that they did not include a capacity rating for the cars! In that study, the efficiency was ranked airplanes, cars, and lastly, trains.
So the moral is that 90% of statistics are made up anyway.
They just might chase the neighbors... I went hiking in an area that had a few sheep scattered about the hillside. One moment I looked up ahead of me to see a sheep charging directly at me! I had never experienced this before, so I faced the sheep head on and prepared myself to dive out of the way if necessary (I was thinking to myself, 'I'm about to be attacked by a sheep, noone is ever going to believe me....'). Very quickly, the other sheep saw this one, and started trotting my way. The first sheep slowed down just before impact, stopped at my feet, and commenced staring at me. That's when I noticed that every sheep in view was now headed my direction. I kept hiking and tried to ignore them. But its hard to ignore 40-60 sheep following you. I tried running, they ran. I tried standing still, they stood still. I couldn't shake them! I had fears that whoever owned the sheep would suddenly appear with a shotgun and accuse me of stealing his/her sheep. I only managed to escape when another hiker appeared following the trail in the opposite direction. When we passed each other, the sheep got confused and started following him.
It should be noted that the Aerial Robotics Competition didn't have any winners for its first few years of competition. Each year they changed the rules to make it harder, even though no one finished the previous year's challenge (in fact, no team even had a vehicle capable of autonomous flight). Then, one team had a helicopter that autonomously hovered, navigated obstacles, and even located and picked up an object off the ground -- while no other team could even autonomously fly. The following year, every team had a flying entry.
The Darpa Challenge might not have a winner for a couple of years, but if they keep raising the bar a little bit, results will follow.
Take a look at 17 USC 106, 602, the MAI v. Peak case, and the Quality King case.
I'm not sure how the MAI v. Peak case fits in exactly. It establishes that simply running a program creates a copy in RAM, which is actionable under copyright law. Since we're talking about transferring data here, I don't think there's much argument about whether or not a copy has been created.
And as for the Quality King case, here's the synopsis. A producer of hair products sold stuff in different countries for different prices. One distributor got wise, bought the stuff in a country where the product was cheap, and then imported it to the US to resell at a higher price. What's the catch? The producer copyrighted all the labels on their products and tried to use copyright law to prevent this 'unauthorized' importation of their products. The judge ruled that the distribution company was allowed to import the product.
You seem to be saying, "Its illegal because somebody got sued!" So far, none of the items you've pointed out make me think that downloading from allofmp3.com is illegal.
It's not legal for people in the US to download from there.
Ummm, according to the law you posted, it IS legal. It says (my paraphrase): It is illegal to import a copyrighted work without the permission of the copyright owner UNLESS the importation is for personal use. Further, provided allofMP3.com is a legal distributor in their home country, then US Customs has no right to block importing from them. Here is the law complete with legalese:
TITLE 17 > CHAPTER 6 > Sec. 602.
Sec. 602. - Infringing importation of copies or phonorecords
(a) Importation into the United States, without the authority of the owner of copyright under this title, of copies or phonorecords of a work that have been acquired outside the United States is an infringement of the exclusive right to distribute copies or phonorecords under section 106, actionable under section 501. This subsection does not apply to -
(1)...
(2) importation, for the private use of the importer and not for distribution, by any person with respect to no more than one copy or phonorecord of any one work at any one time, or by any person arriving from outside the United States with respect to copies or phonorecords forming part of such person's personal baggage; or
(3)...
(b) In a case where the making of the copies or phonorecords would have constituted an infringement of copyright if this title had been applicable, their importation is prohibited. In a case where the copies or phonorecords were lawfully made, the United States Customs Service has no authority to prevent their importation unless the provisions of section 601 are applicable. In either case, the Secretary of the Treasury is authorized to prescribe, by regulation, a procedure under which any person claiming an interest in the copyright in a particular work may, upon payment of a specified fee, be entitled to notification by the Customs Service of the importation of articles that appear to be copies or phonorecords of the work
At the moment it is only twice as expensive as diesel here in the US
bullshit.
In February of 2004 (the most recent date I could quickly find these figures), when regular diesel was selling for around $1.60 per gallon, biodiesel fuel was selling for about $1.80 per gallon (source) The current price of diesel is $1.74 in the US. I would call that slightly more expensive, not "twice as expensive". Additionally, some biodiesel facilities are beginning to use waste restaurant grease which will reduce the price further. Here is a book that teaches you how to make biodiesel in your own backyard for pennies per gallon. (of course, there's always the "how much is your time worth?" argument, but the amount of time actively working is low, most of the time commitment is waiting)
all of our fertilizers are fossil fuel based
bullshit.
No really, ever heard of 'manure' as fertilizer? or perhaps all of our manure producing livestock are now fed fossil fuels?
growing enough biofuel to replace all the world's oil usage would require all the arable land on the entire planet
bullshit.
I won't even bother explaining how rediculous this one is.
Vegenergy is a company starting up in Atlanta, GA to produce biodiesel from waste restaurant grease. They have some info on the website, like a some common myths about biodiesel. Look around for real information before just spouting garbage. No wait, this is slashdot, nevermind, continue spouting...
True diversity, Charney said, would require thousands of different operating systems, which would make integrating computer systems and networks virtually impossible
I think the appropriate analogy here would be the early days of railroad. It used to be that each train company had their own standard for the width of the rails. The train engines and cars from one company could not fit on the rails from a competing railway.
Obviously, it would be *impossible* to connect the entire country by rails unless a single company owned all of the tracks.
The evidence in favor of the attack is mainly backscatter, right?
Just curious, how hard would it be to set up a script on your server to just fling SYN/ACK packets to random addresses such that it would appear that you were being attacked?
Vertical price-fixing -- an agreement between a supplier and a dealer that fixes the minimum resale price of a product -- is a clear-cut antitrust violation. It also is illegal for a manufacturer and retailer to agree on a minimum resale price.
This is why you always see an MSRP: manufacturer's *suggested* retail price. However, it is legal for a supplier to stop supplying a product to a seller that does not abide by the MSRP. Thus, if store wants to keep selling iPods (while making a tidy profit) they have to abide by Apple's pricing scheme.
In theory, it is illegal for a manufacturer to dictate the price that a store sells an item. For example, Best Buy could choose to sell iPods at a loss just to get more people to the store and there's nothing that Apple can legally do about it. The reality is, some manufacturers do dictate the prices and if a seller doesn't conform then they no longer recieve the product (oh sorry, we're all out of stock....)
Rollerblade was well known for similar behavior. Even though it is technically illegal, its nearly impossible to police.
"... We do not want to be heavy-handed in our approach and our research. To get back to the original reason for my post now, "Quick & Dirty" = Sloppy and inaccurate. According to Military.com buddy finder www.military.com/Locator/DodDetail/1,1..[?] there was a Brad Heckman that served. (MOS 91R - Veterinary Food Inspection Specialist). I can't verify that this is or is not really him though but it does agree with what he said... "
Do US cell phones even use encryption? I few years ago I worked at a company that made high-speed A/D and D/A converters. One of our test setups picked out the strongest 10 cell phone signals and we could listen in to whichever one we chose. all for, uhh, testing purposes, of course. I know that we weren't breaking any 64 bit (or 54 bit) encryptions on 10 different channels in real-time.
Re:A discrepancy?
on
dB Drag Racing
·
· Score: 3, Informative
Not a discrepancy, but perhaps a slight mix-up.
The article is correct: a 10dB increase is equivalent to doubling the perceived sound volume.
The thing you are probably remembering is that you must double the input power to achieve a 3dB increase.
The problem with that solution is that you are merely shifting the polution. Now instead of your "dirty" gasoline powered car poluting the city, you have a "clean" car running around in the city while extra polution is being pumped out of the smokestacks of your local power company.
There are very reasonable proposals for how to store hydrogen on board a car. The real problem is that most people are still scared of hydrogen because of the Hindenburg - and any quick search will reveal that hydrogen was not to blame in that disaster, but rather the skin of the Hindenburg. (for example here)
As for transportation, why transport hyrdrogen all over the country when you can make it on site. Honda has already designed and built a solar powered hydrogen refueling station.
I thought it was normal to actually *build* circuits in electrical engineering since my school required it. It wasn't until after graduation that I talked to other recent graduates and found out that my school had been the exception and not the rule. It certainly helped me get a job when I could refer to specific problems I had designing and building say, a 100W audio amplifier (just one of many projects), rather than just talking about the theoretical aspects of such a design. I also discovered that my school held a high reputation in industry because of this. Unfortunately, due to budget cuts and a the retirement of a few key professors, it looks like they will (or possibly already have) abandoned many of these hands-on labs.
Electrolux actually had this prototype ready 8 or so years ago, but they thought that there was not enough market interest (partly because of the price). It looks like they saw the success of the roomba and decided to dust off the old prototype and jump on the bandwagon.
Slashdot Mirror
My favorite has got to be 1 = 2. Here's the proof.
x = x
x^2 = x^2
x^2 - x^2 = x^2 - x^2
x*(x-x) = (x+x)*(x-x)
x = x+x
x = 2x
1 = 2
Q: What's the difference between a cow and a bull?
Well, its either the one or the udder.
Li-Poly batteries got their bad rap because early Lithium-Ion batteries were more prone to explosion than other types of batteries. The newer Lithium-Polymer batteries have reduced the risk of explosion due to overcharging or incorrect charging.
Their problem now is that Lithium reacts very violently when exposed to air. A Li-Poly battery that gets cracked (ie if your RC plane crashes hard enough) will not explode, but it will get *extremely* hot -- somewhere around 1500F (one-thousand five-hundred degrees fahrenheit) -- causing the remainder of you plane to go up in flames.
This is not to say don't use Li-Poly becuase they are dangerous. The charge density and the weight are excellent -- just be aware of what the dangers are.
"What information does he have that says that the Army can't do this yet?"
Maybe the DARPA contract that hired Georgia Tech to design a UAV helicopter? Incidentally, this is the lab I work for. A choice quote from a high ranking army official at a recent demonstration of the GTMax was, "It is criminal for this thing to be sitting in the lab". He was impressed, and the Army wants one.
Most people like to see the videos
I've seen two similar studies. In one of them, they compared full trains to full cars, and the fuel consumption per person was pretty close with an edge toward cars. The problem with those numbers is that many car commuters have only 1 person per vehicle, so depending on the size of the car, you actually have a consumption rating of 4 or 5 times that of the full train. (of course, the train isn't always full either)
In a different study, they compared cars to trains to airplanes, again on a fuel consumption per person basis. The airplane 'won' that comparison because (according to the study) they typically operate at 90+ percent capacity. The train efficiency was drastically crippled because they claimed that trains operate with less than 40% of the seats filled, and the kicker was that they did not include a capacity rating for the cars! In that study, the efficiency was ranked airplanes, cars, and lastly, trains.
So the moral is that 90% of statistics are made up anyway.
it's unlikely to chase the neighbors
They just might chase the neighbors... I went hiking in an area that had a few sheep scattered about the hillside. One moment I looked up ahead of me to see a sheep charging directly at me! I had never experienced this before, so I faced the sheep head on and prepared myself to dive out of the way if necessary (I was thinking to myself, 'I'm about to be attacked by a sheep, noone is ever going to believe me....'). Very quickly, the other sheep saw this one, and started trotting my way. The first sheep slowed down just before impact, stopped at my feet, and commenced staring at me. That's when I noticed that every sheep in view was now headed my direction. I kept hiking and tried to ignore them. But its hard to ignore 40-60 sheep following you. I tried running, they ran. I tried standing still, they stood still. I couldn't shake them! I had fears that whoever owned the sheep would suddenly appear with a shotgun and accuse me of stealing his/her sheep. I only managed to escape when another hiker appeared following the trail in the opposite direction. When we passed each other, the sheep got confused and started following him.
Sheep are dumb.
It should be noted that the Aerial Robotics Competition didn't have any winners for its first few years of competition. Each year they changed the rules to make it harder, even though no one finished the previous year's challenge (in fact, no team even had a vehicle capable of autonomous flight). Then, one team had a helicopter that autonomously hovered, navigated obstacles, and even located and picked up an object off the ground -- while no other team could even autonomously fly. The following year, every team had a flying entry.
The Darpa Challenge might not have a winner for a couple of years, but if they keep raising the bar a little bit, results will follow.
Take a look at 17 USC 106, 602, the MAI v. Peak case, and the Quality King case.
I'm not sure how the MAI v. Peak case fits in exactly. It establishes that simply running a program creates a copy in RAM, which is actionable under copyright law. Since we're talking about transferring data here, I don't think there's much argument about whether or not a copy has been created.
And as for the Quality King case, here's the synopsis. A producer of hair products sold stuff in different countries for different prices. One distributor got wise, bought the stuff in a country where the product was cheap, and then imported it to the US to resell at a higher price. What's the catch? The producer copyrighted all the labels on their products and tried to use copyright law to prevent this 'unauthorized' importation of their products. The judge ruled that the distribution company was allowed to import the product.
You seem to be saying, "Its illegal because somebody got sued!" So far, none of the items you've pointed out make me think that downloading from allofmp3.com is illegal.
It's not legal for people in the US to download from there.
Ummm, according to the law you posted, it IS legal. It says (my paraphrase): It is illegal to import a copyrighted work without the permission of the copyright owner UNLESS the importation is for personal use. Further, provided allofMP3.com is a legal distributor in their home country, then US Customs has no right to block importing from them. Here is the law complete with legalese:
TITLE 17 > CHAPTER 6 > Sec. 602.
Sec. 602. - Infringing importation of copies or phonorecords
(a) Importation into the United States, without the authority of the owner of copyright under this title, of copies or phonorecords of a work that have been acquired outside the United States is an infringement of the exclusive right to distribute copies or phonorecords under section 106, actionable under section 501. This subsection does not apply to -
(1)...
(2) importation, for the private use of the importer and not for distribution, by any person with respect to no more than one copy or phonorecord of any one work at any one time, or by any person arriving from outside the United States with respect to copies or phonorecords forming part of such person's personal baggage; or
(3)...
(b) In a case where the making of the copies or phonorecords would have constituted an infringement of copyright if this title had been applicable, their importation is prohibited. In a case where the copies or phonorecords were lawfully made, the United States Customs Service has no authority to prevent their importation unless the provisions of section 601 are applicable. In either case, the Secretary of the Treasury is authorized to prescribe, by regulation, a procedure under which any person claiming an interest in the copyright in a particular work may, upon payment of a specified fee, be entitled to notification by the Customs Service of the importation of articles that appear to be copies or phonorecords of the work
At the moment it is only twice as expensive as diesel here in the US
bullshit.
In February of 2004 (the most recent date I could quickly find these figures), when regular diesel was selling for around $1.60 per gallon, biodiesel fuel was selling for about $1.80 per gallon (source) The current price of diesel is $1.74 in the US. I would call that slightly more expensive, not "twice as expensive". Additionally, some biodiesel facilities are beginning to use waste restaurant grease which will reduce the price further. Here is a book that teaches you how to make biodiesel in your own backyard for pennies per gallon. (of course, there's always the "how much is your time worth?" argument, but the amount of time actively working is low, most of the time commitment is waiting)
all of our fertilizers are fossil fuel based
bullshit.
No really, ever heard of 'manure' as fertilizer? or perhaps all of our manure producing livestock are now fed fossil fuels?
growing enough biofuel to replace all the world's oil usage would require all the arable land on the entire planet
bullshit.
I won't even bother explaining how rediculous this one is.
Vegenergy is a company starting up in Atlanta, GA to produce biodiesel from waste restaurant grease. They have some info on the website, like a some common myths about biodiesel. Look around for real information before just spouting garbage. No wait, this is slashdot, nevermind, continue spouting
True diversity, Charney said, would require thousands of different operating systems, which would make integrating computer systems and networks virtually impossible
I think the appropriate analogy here would be the early days of railroad. It used to be that each train company had their own standard for the width of the rails. The train engines and cars from one company could not fit on the rails from a competing railway.
Obviously, it would be *impossible* to connect the entire country by rails unless a single company owned all of the tracks.
The evidence in favor of the attack is mainly backscatter, right?
Just curious, how hard would it be to set up a script on your server to just fling SYN/ACK packets to random addresses such that it would appear that you were being attacked?
Vertical price-fixing -- an agreement between a supplier and a dealer that fixes the minimum resale price of a product -- is a clear-cut antitrust violation. It also is illegal for a manufacturer and retailer to agree on a minimum resale price.
This is why you always see an MSRP: manufacturer's *suggested* retail price. However, it is legal for a supplier to stop supplying a product to a seller that does not abide by the MSRP. Thus, if store wants to keep selling iPods (while making a tidy profit) they have to abide by Apple's pricing scheme.
In theory, it is illegal for a manufacturer to dictate the price that a store sells an item. For example, Best Buy could choose to sell iPods at a loss just to get more people to the store and there's nothing that Apple can legally do about it. The reality is, some manufacturers do dictate the prices and if a seller doesn't conform then they no longer recieve the product (oh sorry, we're all out of stock....)
Rollerblade was well known for similar behavior. Even though it is technically illegal, its nearly impossible to police.
posted by Robm at the dslreports forum:
... "
"... We do not want to be heavy-handed in our approach and our research. To get back to the original reason for my post now, "Quick & Dirty" = Sloppy and inaccurate. According to Military.com buddy finder www.military.com/Locator/DodDetail/1,1..[?] there was a Brad Heckman that served. (MOS 91R - Veterinary Food Inspection Specialist). I can't verify that this is or is not really him though but it does agree with what he said
Do US cell phones even use encryption? I few years ago I worked at a company that made high-speed A/D and D/A converters. One of our test setups picked out the strongest 10 cell phone signals and we could listen in to whichever one we chose. all for, uhh, testing purposes, of course. I know that we weren't breaking any 64 bit (or 54 bit) encryptions on 10 different channels in real-time.
Not a discrepancy, but perhaps a slight mix-up.
The article is correct: a 10dB increase is equivalent to doubling the perceived sound volume.
The thing you are probably remembering is that you must double the input power to achieve a 3dB increase.
The problem with that solution is that you are merely shifting the polution. Now instead of your "dirty" gasoline powered car poluting the city, you have a "clean" car running around in the city while extra polution is being pumped out of the smokestacks of your local power company.
There are very reasonable proposals for how to store hydrogen on board a car. The real problem is that most people are still scared of hydrogen because of the Hindenburg - and any quick search will reveal that hydrogen was not to blame in that disaster, but rather the skin of the Hindenburg. (for example here)
As for transportation, why transport hyrdrogen all over the country when you can make it on site. Honda has already designed and built a solar powered hydrogen refueling station.
I thought it was normal to actually *build* circuits in electrical engineering since my school required it. It wasn't until after graduation that I talked to other recent graduates and found out that my school had been the exception and not the rule. It certainly helped me get a job when I could refer to specific problems I had designing and building say, a 100W audio amplifier (just one of many projects), rather than just talking about the theoretical aspects of such a design. I also discovered that my school held a high reputation in industry because of this. Unfortunately, due to budget cuts and a the retirement of a few key professors, it looks like they will (or possibly already have) abandoned many of these hands-on labs.
Electrolux actually had this prototype ready 8 or so years ago, but they thought that there was not enough market interest (partly because of the price). It looks like they saw the success of the roomba and decided to dust off the old prototype and jump on the bandwagon.
there is an all-female university nearby, around here LUG means "Lesbian Until Graduation".
I've seen many people complain about real estate usage of Opera. F11 switches to full-screen. It even gets rid of the ads in the free version.
Nobody panic, ALS Scan is still up.