top Malcolm Gladwell On Culture and Airplane Crashes
"Lastly, we're hearing murmurs already about the fact that Asiana Airlines hails from Korea, a country with a checkered past when it comes to air safety. Let's nip this storyline in the bud. In the 1980s and 1990s, that country's largest carrier, Korean Air, suffered a spate of fatal accidents, culminating with the crash of Flight 801 in Guam in 1997. The airline was faulted for poor training standards and a rigid, authoritarian cockpit culture. The carrier was ostracized by many in the global aviation community, including its airline code-share partners. But Korean aviation is very different today, following a systemic and very expensive overhaul of the nation’s civil aviation system. A 2008 assessment by ICAO, the civil aviation branch of the United Nations, ranked Korea's aviation safety standards, including its pilot training standards, as nothing less than the highest in the world, beating out more than 100other countries. As they should be, Koreans are immensely proud of this turnaround, and Asiana Airlines, the nation's No. 2 carrier, had maintained an impeccable record of both customer satisfaction and safety."
top New Best Way To Nuke a Short-Notice Asteroid
Last month, the annual Planetary Defense Conference took place, this time in Flagstaff, Arizona (down the road from Meteor Crater). If you are interested in this topic, you really should take a look at the incredible video archive which has ALL of the presentations -- like 23 hours of them. Seriously, if you really want to dive deep into this subject, imagine me GRABBING YOUR SHOULDERS AND SHAKING YOU and saying loudly right into your face "watch these videos!"
Here is the conference webpage:
And here is the program, useful for navigating the video archive below:
But you really want to go to the videos. Here is the complete archive:
Particularly germane to the discussion here, check out this video which includes two presentations:
At the 1h21m point:
Overview of Collisional-Threat Mitigation Activities at Lawrence Livermore National Laboratory Paul Miller (very dry delivery, but very interesting review of nuclear weapon solutions)
At the 1h42m40s point:
GPU Accelerated 3-D Modeling and Simulation of a Blended Kinetic Impact and Nuclear Subsurface Explosion Brian Kaplinger (new PhD, on the same team as Dr. Wie, the author mention in the post that leads this thread).
These guys have thought about these problems far harder than you have. You might benefit from listening to them for 20 minutes.
Or, you know, just skip this and resume your underinformed opinionating
:) about a year and a half ago
top New Process Takes Energy From Coal Without Burning It
Heh. I'm wondering who would be the bigger fool: you for believing this, or anyone else believing you?
CCS is a gigantic fraud, soon to be executed on an industrial scale.
top U.S. East Coast a Hotspot of Sea-Level Rise
Of course they've done that. They've done it all.
The fact that you even think you need to research it is a sad commentary on the real situation. Anthropogenic global warming (AGW) and the secondary effects are all settled science, and the only reason there appears to be a debate is that those who are profiting from the status quo have colossal megaphones. Funding of denier scientists, astroturfing letters to the editor, et cetera. All they have to do is sow doubt. Congratulations.
Sadly, we have been utterly screwed since we failed to ratify Kyoto 20 years ago.
top "Twisted" OAM Beams Carry 2.5 Terabits Per Second
I work in satellite communications, where circular polarization (e.g. LHCP and RHCP) is common, especially in some C-band links. Can someone explain to me how OAM is different from CP? Because it sure sounds like CP to me.
And if they're modulating the data onto the phase, wouldn't that simply be phase shift keying?
I read a short IEEE Spectrum article about this just yesterday, and I'm still puzzled. Tech writers tackling this subject would be well advised to mention CP in their writing and explain how this differs.
top 25 Years of IBM's OS/2
I'm also an OS/2 refugee, ran it for six years or so as my primary OS. There were some frustrations, sure, but it was much more stable than anything else available at the time. And the apps seemed to be higher quality. To this day I still use PMView, an image viewing/processing program that had its roots in OS/2, and yes I pay money for it. I WISH I could still be using PMMail -- that email program was so beautifully done, everything working the way it should. Every time my Thunderbird install doesn't handle justification right, I pine for the days of PMMail and OS/2 (which means every day).
AntEater, you should check the link in my sig. Your misuse of its vs it's is distracting to the reader. I know that techies think grammar doesn't matter, but your smartest readers see that mistake as a cognitive speedbump.
top SpaceX Gets Astronauts To Try Out Its Dragon Crew Cabin
Here's the 60 Minutes piece that everybody's mentioning but not linking to:
The seven-crew version of Dragon can be seen briefly in it. I believe it was the scene where Garrett Reisman was getting out of it. In a side note, it's too bad there wasn't more of Garrett, he's a real card.
top Russian Rocket Fleet Grounded Again
Alexei Krasnov, chief of piloted programs:
"The malfunction was found in the service elements of the descent capsule....but no decision was taken to delay a forthcoming launch.
Krasnov acknowledged that several days ago some problems really emerged....but the problems are related to a service element, rather than the descent capsule,
Krasnov did not rule out that “the schedule of piloted missions will be revised,” but he sees no tragedy in this. “There are program reserves to deal with the emerged problem,” he underlined.
“It is very good that upon the results of the tests we received critical remarks before the spaceship was brought to the Baikonur spaceport, because we have some time and possibilities to examine everything in detail,” Krasnov concluded.
top Chevy Volt Passes Safety Investigation
I've been doing some research.
Might want to try a little harder.
The Volt was only tested in -10 weather in Canada, not the -20C to -40C we get in Saskatchewan. As battery efficiency drops
dramatically in the cold, I have my doubts about it's electric range capabilities here.
The Volt functions down to -13 F / -25 C cold. That's the COLD SOAK temperature of the battery. If the battery pack is colder than that, then the gas engine will fire up to generate electricity to warm up the battery above that temperature threshold. Note that I didn't say ambient temperature; we're talking about the temperature deep inside the car, inside a 400 pound battery pack. It takes a long time at a given ambient temperature to get the battery pack itself down to that temperature. Does your weather stay at or below -13 F / -25 C for 24 hours at a time? If so then I agree the Volt isn't for you, but it's great for the rest of us.
And once you switch over to gas power, the Volt gets
atrocious mileage compared to many other similarly sized cars
37 MPG is pretty damn good by nearly any standard. "Atrocious"? Don't be such a drama queen.
the Ford I'm looking at sells for literally
half the price of the Volt. $20,000 buys a HELL of a lot of gasoline.
Make sure you're doing a fair comparison. The Ford you are comparing to (you don't say which) likely will have it's doors blown in by the Volt's performance. Further, the Volt is likely more luxuriously appointed than whatever econo penalty box you are comparing with.
For lots and lots of current Volt owners, their previous car was a luxury sports sedan. Mine was an Audi.
top Chevy Volt Passes Safety Investigation
... the gasoline engine will come on to help run the car in various situations, depending on what mode it's in. Like going up a steep hill at more than 40mph(!).
Wrong, wrong, wrong. 10-Oct-10 will live in infamy in the annals of the Volt because it's the day that people like the parent of this post misread GM's very interesting disclosure about the Volt powertrain to mean "the engine comes on at high speeds".
FOR THE FIRST 35 MILES OF RANGE, THE VOLT IS A FULL PERFORMANCE ELECTRIC VEHICLE.
"Full performance" means it can go ANY SPEED and MAX ACCELERATION under only electric propulsion. Over and over, lazy bloggers (and blog comment posters) have misread articles about the transmission to conclude that the engine comes on at high speeds or high acceleration. IT'S NOT A PRIUS. I have countless jackrabbit starts and high speed runs in my Volt to demonstrate it is most definitely not a Prius. I'm with Dan Akerson on this -- I wouldn't be caught dead in a Prius
Read the actual article more closely. It's a complicated car, with amazing results.
top Chevy Volt Passes Safety Investigation
So your solution to protecting the batteries are adding heavy Steel plates to the car. Which in turn adds more weight and gives less mileage. We can't find a metal that is lighter and stronger?
They've said the additional bracket (it's a stretch to call it "steel plates" has it's not exactly armor) weighs about 3-4 pounds and will have no noticeable effect on efficiency.
Photo of the bracket is here:
From this excellent overview of the actual "fixes" that GM will be doing to customers that CHOOSE to bring their Volt in for it:
Also, you might want to google "Volt high strength steel". The car has some of the highest structural rigidity in the industry. Yet another way in which the Volt is demonstrating a big leap forward in automotive technology.
top Chevy Volt Passes Safety Investigation
"no real benefit other than being able to run for short distances at low speeds on the battery"
Low speeds, huh? I wish I'd known that when I was blasting down the highway earlier this evening in my Volt, purely electric. Top speed: 101 MPH*
Please mod parent down, just more of the usual misinformed opinio-crap. And if you have mod points, please look for other garbage posts like this and mod them down too. Wish I had some mod points today.
In the meantime, chew on this:
* I didn't go that fast, I stayed down at a safe speed. 101 MPH is the published top speed of the Volt, regardless of which mode it's in.
top Tapping Subway Trains For Energy
... to let you know that you're playing fast and loose with differing types of braking systems. Flywheel-based KERS, electric motor+battery regen braking, different things that are the same "in principle" only if your principle is "slow down with some mechanism besides direct generation of heat".
Further, nobody is bothering to read the article, is just taking the summary here at face value. But that's par for the course here. Nevermind.
top Space Station To Be Deorbited After 2020
Jesus Christ, here we go again. The International Space Station only has officially support from the entire international community through 2020. We JUST came to an agreement for the 10-year run from 2010 to 2020. As we get closer to the 2020 date, you can be sure that they will work to extend those agreements.
This really is a non-story, but that doesn't stop breathless reporting like this from popping up every 6 months. Somebody else in this thread probably explained this better than I have time to, and if so please mod them up, or if no such other post then please mod me up
:) And please mod down all the other yahoos kicking and screaming about the deorbiting. Worry not, it ain't happening.
top Airplanes Cause Accidental Cloud Seeding
Precisely. Someone mod parent up please.
top Australian-Built Hoverbike Prepares For Takeoff
This thread needs a LOT more comments about CONTROLLABILTY. That thing is going to be completely unstable. 10,000 feet? Ha! It'll flip before it gets to 100 feet.
top Radioactive Water Found In Two Reactor Buildings
I am soo tired of the sensationalized stories surrounding Japan's "nuclear crisis." .... the containment units withstood a 9.0 quake which is many orders of magnitude greater than the design specified.
I am soo tired of sensationalized math. The reactor was designed for an 8.2 earthquake, and withstood (for the most part) a 9.0 earthquake. That isn't "many orders of magnitude" greater, that's
about 6.3 times. You need to look up what " orders of magnitude" actually means -- and quit sensationalizing your math.
top Beijing To Track Citizen's Cell Phones
Holy crap, that is awesome!
I love how his first overnight stop is in
top What’s the Internet? (on 1994's Today Show)
January 1994 actually WAS kind of early to understand the internet. I myself only caught on to it in summer 1993, with Mosaic running on Suns and Macs in the Georgia Tech computer labs. I could rock command-line FTP though.
Yes yes, some of you all had internet access / addresses well before then, and hooray for you. But in Jan 1994 it was still extremely new for average mainstream folks, like people who watch (and host) major network morning news shows.
Give the perma-snark a rest. And you kids get off my lawn!
top Motorola Sticks To Guns On Locking Down Android
I don't understand
... "what the vats majority of it is customers want"?
My sig is for you, sir
Yeah, it does matter. Cognitive speedbump.