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Research Project Pays People To Download, Run Executables

KDN How about Bitcoin? (76 comments)

I'd be curious how much Bitcoin would it take to tempt people.

about 2 months ago
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Thorium: The Wonder Fuel That Wasn't

KDN bomb making potential (204 comments)

Do they have this right? I thought the reason Carter went toward Thorium instead of Uranium/Plutonium was because U-233 only emitted 1.3 neutrons (on average) per fission vs U235's 1.9 and Pu239's 2.4. Note: these numbers are from memory over 30 years ago, and I've not been able to find the google in-can-ation that can confirm/correct the values. If anyone has the correct values, or the reasoning, please feel free to chime in.

about 4 months ago
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Student Records Kids Who Bully Him, Then Gets Threatened With Wiretapping Charge

KDN Blame the victim (798 comments)

Yup, its just like rape victims years ago. YOU THE VICTIM must have provoked it. YOU THE VICTIM ARE THE CAUSE. I'm glad that rape victims are usually not blamed any more. I just hope in the future that bully victims are afforded the same. Unfortunately, in the 40 years since I was that victim, I see not much has changed.

about 5 months ago
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Tesla Model S Gets Titanium Underbody Shield, Aluminum Deflector Plates

KDN Re:"extrusion"? (314 comments)

50k tons is indeed huge,

Huge isn't the word. The battleship USS New Jersey is 58,000 tons, Empty its 48K tons. Can you imagine bench pressing a battleship?

about 5 months ago
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Tesla Model S Gets Titanium Underbody Shield, Aluminum Deflector Plates

KDN Re:Very amusing but... (314 comments)

It's marketing. And it's excellent marketing. Plausible risk has little to do with it, but it makes me want to invest in the company.

Its very good marketing, I can almost hear him saying "oh yeah, take that".

On the negative side, I bet there is some teenage brat "suffering" from Affluzenza who is going to drive this car off a cliff, and when he skins his knee he is going to get his daddy to sue the company for a billion or so dollars.

about 5 months ago
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Tesla Model S Gets Titanium Underbody Shield, Aluminum Deflector Plates

KDN Re:indeed (314 comments)

Indeed it does; it makes me wonder why they don't make the Tesla S look more like a badass car and less like a family sedan.Wouldn't take much revision to have, say, a Tesla Se, that's got minor revisions ala body panels.

I have to wonder if they are going to do a "Mad Max" version of the Tesla :-) Driving through massive potholes, smashing concrete blocks in the street, deflecting steel rods. Perfect for driving in NYC :-).

about 5 months ago
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Tesla Model S Gets Titanium Underbody Shield, Aluminum Deflector Plates

KDN Re:"extrusion"? (314 comments)

Cost and strength. You can extrude something for a fraction of the cost of 3D printing or milling. You can even extrude titanium if you have a big enough press. (google "heavy press program" if you want to see some MONSTER presses.) Both extrusion and milling still have strength advantages over 3D printing. Where 3D printing shines is prototyping, small run, or fancy designs that are too difficult to extrude or cast or mill. But give it a few more years. The other methods have been around far longer, so we know how to do things well.

about 5 months ago
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Back To the Moon — In Four Years

KDN Re:Savvy (292 comments)

Well, "Lead" and "technically savvy" doesn't mean "doing the actual building." We're quite good giving money to china for building stuff. That SORTA fits the bill.

Yeah, how'd that Chinese moon rover work out for them, huh?

How many of our missions blew up on the launch pad or burned up in the atmosphere due to a conversion error or had mirrors ground to the wrong focal length? With every step you should learn something, even if its what not to do. To paraphrase Q: if your that afraid of risk you should go crawl under your bed and hide.

about 5 months ago
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Back To the Moon — In Four Years

KDN Re:Back to the moon? How? (292 comments)

Who needs a movie set when you can do everything CGI?

about 5 months ago
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Back To the Moon — In Four Years

KDN Re:Yeah, too bad there's no real reason to do so.. (292 comments)

No reason to go? Exploration, research, challenges and opportunities and technical advances that we can't even begin to articulate. We have not even begun to explore the moon. More men accompanied Christopher Columbus on his first voyage to the New World than have landed on the moon. Even without men we can send dozens of missions to help iron out the details of new propulsion systems like ion or hall or vascimar. We can develop and deploy robotic probes with a far faster turn around time (and less need to gold plate everything) by doing the development on the moon instead of Mars. We can see the long term radiation effects on materials once they are outside of Earth's protective magnetic field. Put even a small observatory on the far side of the moon and you open up huge opportunities shielded from all the transmitters on Earth, and outside of Earth's atmosphere. I would put several at different spots to enable long baseline measurements as well as lessen the expense of triple redundant systems in case of failure.

H

And lastly, give this generation something to shoot for. Something other than the newest Angry Birds or social media app. Something to shoot for, to make history, to inspire a new generation like JFK's speech on going to the moon. It will happen. The question is, will they speak Chinese or American?

about 5 months ago
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How Japanese Scientists Are Monitoring Fukushima Babies For Radiation Exposure

KDN Re:Exposure .... (95 comments)

I'm not an expert in radio isotope absorption. But my understanding of the protective effects of potassium iodide is that it floods the body with iodide, thus lowering the odds that the radioactive version will be absorbed. My understanding of strontium-137 is that it is chemically similar to calcium, and therefore is absorbed when there is insufficient calcium. I read these theories in articles on Three Mile Island, so the research may be very old. If anyone has newer research I'd be interested.

Its good that they are checking the kids, and that the detectors are picking up the normal potassium exposure. Like it or not, they have become a laboratory on radiation exposure. Also I agree that the environmental and anti business people will be trying to scare everyone.

about 6 months ago
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Rolls Royce Developing Drone Cargo Ships

KDN Re:until someone hacks it (216 comments)

I don't think I said doomed to failure or it will never work. When they start losing money or generating bad publicity, they will hopefully fix it. Microsoft comes to mind, as does Adobe, as does WEB going to WPA, as does the original cordless phone to something like DECT, as does the old blue boxing of phone booths to out of band signaling. Hopefully they will get it right the first time, but judging by the rest of the industries, they won't. Frankly I can't think of a single instance where someone did a good job right from the start. Can you?

about 6 months ago
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Rolls Royce Developing Drone Cargo Ships

KDN Re:until someone hacks it (216 comments)

...and you need to keep control of that vehicle for a few weeks to get it into a friendly port for unloading, during which time (1) folks with guns are doing their best to find you, and (2) you have no hostages to use as bargaining chips if they do so.

That's an awfully high-risk venture to get the kind of talent you'd need to hijack control in the first place [stealing private keys used to encrypt/authenticate the control chanel, etc] to sign off on.

I do information security for a living. I've seen hundreds of products where security is left out because (a) they need to get it to market faster, (b) it would add a dollar to the cost, (c) security is the users' responsibility, (d) I can design security better than anyone else on the planet, or (e) I don't care. Go through the archives of comp.risks if you want a few examples. Read Schneider's blog if you want more. Read slashdot.org if you want more.

Now here is a fun one: man in the middle attack. Take over the boat, but keep sending "normal" conditions back to the owners.

about 6 months ago
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Rolls Royce Developing Drone Cargo Ships

KDN Re:until someone hacks it (216 comments)

Support pylons of the Golden Gate Bridge, have several of them collide at the entrance to the Long Beach shipping terminal, blocking access for a few weeks, run over the deep water loading ports for crude oil. Run over a deep water drilling rig. I can think of any number of terrorist activities one could do. And remember, time and time again, no one really thinks of security until that "oh s___, we've been hacked" moment.

Except they could already do that with a manned vessel if it was at all feasible.

I'm not talking about boarding the vessel. I'm talking about hijacking the communications link and taking over the vessel. Then you could do it from anywhere in the world and have just about zero chance of getting caught.

about 6 months ago
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Rolls Royce Developing Drone Cargo Ships

KDN Re:until someone hacks it (216 comments)

Waving assumes that you need to get on board to take control. How about hacking the communications link? Then you have the world's largest RC vehicle.

about 6 months ago
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Rolls Royce Developing Drone Cargo Ships

KDN Re:until someone hacks it (216 comments)

Support pylons of the Golden Gate Bridge, have several of them collide at the entrance to the Long Beach shipping terminal, blocking access for a few weeks, run over the deep water loading ports for crude oil. Run over a deep water drilling rig. I can think of any number of terrorist activities one could do. And remember, time and time again, no one really thinks of security until that "oh s___, we've been hacked" moment.

about 6 months ago
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California Bill Proposes Mandatory Kill-Switch On Phones and Tablets

KDN Re:Bad idea - use IMEI instead (341 comments)

Not exactly, you will be arresting those who buy the stolen property. But hey, after a while people will start to get the idea.

about 7 months ago
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A New Use For Drones: Traffic Scouting

KDN Go Speed Racer Go (144 comments)

Its amazing that technology and companies are finally catching up with the old Speed Racer cartoons.

about 7 months ago
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California Bill Proposes Mandatory Kill-Switch On Phones and Tablets

KDN Bad idea - use IMEI instead (341 comments)

Oh gee, our enemies are going to love this, the ability to nuke all the cells phones in the US at one shot. How much do you think a cracker could sell this exploit for?

Better solution: create a database of stolen IMEI numbers. In that way it can be reversed if/when the eventual screwup occurs.

about 7 months ago
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Revolutionary Scuba Mask Creates Breathable Oxygen Underwater On Its Own

KDN Suspicious (375 comments)

Is anyone else suspicious of this announcement? Every article I can find is very vague on exactly how this is supposed to work. The one article I found that has a hint was it mentioning a filter with pores smaller than a water molecule. This infers they are extracting oxygen dissolved in the water. I wonder how much water one would need to pass through. Fish are cold blooded, and therefore have a lower metabolism than mammals. So we would need to filter a lot more water than a typical fish to make this work.

about 8 months ago

Submissions

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Slingshot drone fleet targets US heartland

KDN KDN writes  |  more than 2 years ago

KDN writes "UAV's in the US: http://www.foxnews.com/scitech/2012/04/20/slingshot-drone-fleet-targets-us-heartland/

When I read this I couldn't help thinking of Wild E Coyote chasing the Road Runner: The UAVs are launched like a slingshot using a 100-foot bungee cord: The pilot ties the bungee to a stake in the ground, gets the proper tension and hooks the bungee to the aircraft before lofting it into the skies "

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