I don't mean to offend, but I perceive MD's as people good at memorizing a bunch of random stuff. The kind of mental faculty required for that is totally orthogonal to that for critical thinking in science, and I just end up not trusting them. They are basically just walking, expensive search engines that don't even get updated that often.
Biodiesel is one way to do it. However, there is no inherent reason why fossil diesel can't be refined to be more clean that it is now in the US. US diesel is very dirty, as witnessed by plumes of black smoke any large tractor trailer will emit on acceleration. There is no inherent reason for that; there just hasn't been any demand for clean diesel yet, either through lack of interest or lack of legislation. But in Europe, where there are a lot more diesel cars around, the industry responded to regulation pressure by putting out more refined and cleaner fuel.
There is some more detailed information about diesel impurities in the article I linked in the original post.
Hybrid cars require a much smaller engine than combustion engines because they just use it to charge the batteries. It's pretty much a computer, batteries, and small lawnmower sized engine.
Not by a long shot. Today's hybrid's gas engines are still the primary source of propulsion. For example, the Prius engine puts out 76HP. That is one heck of a lawnmower.
The efficiency of today's hybrids comes basically from two things: first, regeneration, such as regenerative braking, and second, more efficient gas engines enabled by having an assisting electric motor. For example, Prius' gas engine only runs in a narow speed band around 5000 rpm, which allows it to be built from lighter components, and operate more efficiently. This is possible because there is an electric motor to get the car from 0-5000rpm.
Note that batteries in these cars don't last long; they get charged continuously by the gas engine, and so having solar cells or charging them at home doesn't help much (think about how often you charge your current car battery via AC to save fuel!).
Your idea of future battery-centered cars unfortunately depends heavily on the assumption that battery technology will suddenly improve by orders of magnitude. That would be nice, but if that industry's track record says anything, it's that diesel hybrids and FC cars will be the efficiency kings for quite some time.
Both of these suffer from the same problem. They loop through the same type of fuel (electricity). This is never going to work. It's too inefficient when we are talking about large scale deployment.
In theory though, they could still be more efficient than the internal combustion engines. See the following article on modern diesel engines, and note the projected fuel cell efficiencies which include fuel production.
Having said that, the modern diesels look like a serious contender to FCs, since they are already available, are competitive in efficiency, and yield well to hybridization. Once cleaner diesel fuel starts rolling in look out!
I'm already able to zoom arbitrarily into QCIF sized webcam shots to enlarge the details. The advent of sound cards enabled cool chirping sound effects while stretching the zoom bounding box. But printing those images has always been a problem! Thank you Brother!
It's not easy:) There really is no perfect anonymity in two-way communication. However, there are ways to reduce risk of compromise, such as use different intermediate nodes for sending/receiving, use random numbers of intermediaries, etc.
Even with one intermediate node the job of adversaries is changed from subpoenaing an IP-to-person mapping from ISPs to finding the intermediary first, and then getting logs from the intermediary (assuming they exist). The best they could do without joining the network is sniff intermediary's links and hope to crack the encryption somehow.
I believe so too, but not because of anon or content search. Instead, I see swarming as the killer app of BT, something that the Rodi spec goes over very superficially and even hints at using UDP.
All Xandros PCs and laptops include free Skype-to-Skype calling worldwide
Wow, that's generous! Now if only their internet access offered free access to CNN.com and slashdot.org, worldwide, I'd be putting in my order right away!:^)
In addition, who knows at what level of detail our brains work? Naturally evolved hardware tends to exploit any physical phenomena available to it. Like genetically evolved digital circuits that end up using, say, capacitance between gates, the brain may be working with crazy things like quantum effects or even stuff we don't know about yet.
IANANB but I believe a solid first milestone in this direction would be to scan animal brains, simulate them, and obtain some plausible behavior.
Hm, finger joints seem to be kind of like ball joints, so you should be able to drill a small hole and inject some grease with a grease gun. Hope that works for you, let us know how it goes. I would try it myself but I can't drill, my hand is still in a cast from a small accident with a jaw puller.:^)
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I don't mean to offend, but I perceive MD's as people good at memorizing a bunch of random stuff. The kind of mental faculty required for that is totally orthogonal to that for critical thinking in science, and I just end up not trusting them. They are basically just walking, expensive search engines that don't even get updated that often.
OMG! I hope I don't get exploited... or the attackers may get hold of this exciting information:
bin boot dev etc home initrd lib lost+found man media misc mnt opt proc root sbin selinux srv sys tftpboot tmp usr var
service for kids who can't wrestle the remote control from their Dads :)
To help switch to Linux, they are assigning a different engineer to each of the 12 customers. Talk about service! :^)
That's what I get for not checking my facts. Thanks for the correction.
Biodiesel is one way to do it. However, there is no inherent reason why fossil diesel can't be refined to be more clean that it is now in the US. US diesel is very dirty, as witnessed by plumes of black smoke any large tractor trailer will emit on acceleration. There is no inherent reason for that; there just hasn't been any demand for clean diesel yet, either through lack of interest or lack of legislation. But in Europe, where there are a lot more diesel cars around, the industry responded to regulation pressure by putting out more refined and cleaner fuel.
There is some more detailed information about diesel impurities in the article I linked in the original post.
Hybrid cars require a much smaller engine than combustion engines because they just use it to charge the batteries. It's pretty much a computer, batteries, and small lawnmower sized engine.
Not by a long shot. Today's hybrid's gas engines are still the primary source of propulsion. For example, the Prius engine puts out 76HP. That is one heck of a lawnmower.
The efficiency of today's hybrids comes basically from two things: first, regeneration, such as regenerative braking, and second, more efficient gas engines enabled by having an assisting electric motor. For example, Prius' gas engine only runs in a narow speed band around 5000 rpm, which allows it to be built from lighter components, and operate more efficiently. This is possible because there is an electric motor to get the car from 0-5000rpm.
Note that batteries in these cars don't last long; they get charged continuously by the gas engine, and so having solar cells or charging them at home doesn't help much (think about how often you charge your current car battery via AC to save fuel!).
Your idea of future battery-centered cars unfortunately depends heavily on the assumption that battery technology will suddenly improve by orders of magnitude. That would be nice, but if that industry's track record says anything, it's that diesel hybrids and FC cars will be the efficiency kings for quite some time.
Both of these suffer from the same problem. They loop through the same type of fuel (electricity). This is never going to work. It's too inefficient when we are talking about large scale deployment.
In theory though, they could still be more efficient than the internal combustion engines. See the following article on modern diesel engines, and note the projected fuel cell efficiencies which include fuel production.
Having said that, the modern diesels look like a serious contender to FCs, since they are already available, are competitive in efficiency, and yield well to hybridization. Once cleaner diesel fuel starts rolling in look out!
Can you back up this claim about HCs and batteries?
NASA uses a lot of RTGs, but those are not a good large scale solution, especially in manned applications.
Rules of engagement?
Only about 25% of cholesterol in the bloodstream comes from food. The rest is produced by the body from various fats.
This is why it's foolish to watch food cholesterol content more closely than fat, which is the source of the rest of the cholesterol.
I'm already able to zoom arbitrarily into QCIF sized webcam shots to enlarge the details. The advent of sound cards enabled cool chirping sound effects while stretching the zoom bounding box. But printing those images has always been a problem! Thank you Brother!
Not so fast. I picked it up locally.
Well said. I acquired the best monitor in the universe for a mere $60 off eBay. I love the sound of 100Hz at 1280x1024 in the morning.
It's not easy :) There really is no perfect anonymity in two-way communication. However, there are ways to reduce risk of compromise, such as use different intermediate nodes for sending/receiving, use random numbers of intermediaries, etc.
Even with one intermediate node the job of adversaries is changed from subpoenaing an IP-to-person mapping from ISPs to finding the intermediary first, and then getting logs from the intermediary (assuming they exist). The best they could do without joining the network is sniff intermediary's links and hope to crack the encryption somehow.
I believe so too, but not because of anon or content search. Instead, I see swarming as the killer app of BT, something that the Rodi spec goes over very superficially and even hints at using UDP.
He's talking about using UDP, which comes with its own problems, but would allow spoofing.
You can burn a CD-R from the original once, but you can't re-burn from that first copy.
Nice scheme there. It's simple, elegant, does exactly what Sony wants.
I guess it works by voluntary compliance, but let's not get mired with the details.
All Xandros PCs and laptops include free Skype-to-Skype calling worldwide
:^)
Wow, that's generous! Now if only their internet access offered free access to CNN.com and slashdot.org, worldwide, I'd be putting in my order right away!
2007 is coming up fast!
In addition, who knows at what level of detail our brains work? Naturally evolved hardware tends to exploit any physical phenomena available to it. Like genetically evolved digital circuits that end up using, say, capacitance between gates, the brain may be working with crazy things like quantum effects or even stuff we don't know about yet.
IANANB but I believe a solid first milestone in this direction would be to scan animal brains, simulate them, and obtain some plausible behavior.
This is certainly not environmentally safe from a chemical point of view as these are toxic heavy metals.
Heavy metals??? You need to look at the periodic table, my friend. Their atomic numbers are 31 and 49, right under aluminum and just as safe.
Getting crowded out there!
Even without a dial tone?
Hm, finger joints seem to be kind of like ball joints, so you should be able to drill a small hole and inject some grease with a grease gun. Hope that works for you, let us know how it goes. I would try it myself but I can't drill, my hand is still in a cast from a small accident with a jaw puller. :^)