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Comment Re:Billions and billions... (Score 3, Funny) 356

Let's run the math:

(Using classical mechanics, Google Calculator, and some rounding)
40 days, 60 million km to mars at closest approach.
Spend half the time accelerating, half the time decelerating.

For acceleration:
x = x0 + v0t + (at^2)/2
2 * 30 million km / (20 days) ^ 2 = 2e-2m/s^2

Let's use a Space Shuttle, 2,029,203 kg
The force of the engine is
F = ma = ((2 029 203 kg) * 2 * (30 million km)) / ((20 days)^2) = 40 774.5587 newtons
Work along a straight line is Force time distance
W = Fd = (40 774.5587 newtons) * 30 million kilometers = 1.22323676 × 10^15 joules
Power is work over time
P = W/t = 1.22323676 × ((10^15) joules)) / (20 days) = 0.707891644 gigawatts
Of course, we need to do this twice:
Ptotal = 2P = 2 * 0.707891644 gigawatts = 1.41578329 gigawatts

Which is surprisingly close to the power needed to propel a DeLorean through time...

Note that this is only the power needed to get the ship to Mars and then stop it; I have no idea the efficiency of their engine, life support, etc, but hey, the math works close enough for me.

I'm a little weak on my power generation math- anyone who knows something about solar panels and PV arrays want to take a shot at the power requirements?

Comment Re:De Icaza Responds (Score 1, Insightful) 498

>It doesn't take a rocket scientist to work out that a GC-based, VM-based language that has layers of intermediate execution is going to be slower >than is required for a trading system. What I don;t get is that MS thought they could throw hardware at it until it worked.

You're massively under-representing .Net. First, the common belief that it's nothing more than Microsoft-does-Java, never mind the C++ development tools that work to allow developers to write native, as-fast-as-you-want-as-close-to-the-machine-with-inline-assembly that interoperates cleanly with code written in VB, C#, or F#- what other platform allows you to literally mix inline assembly within functional programming? (Not saying it's a good idea, just saying it works that way). There's a reason that VisualStudio/.Net is the best tool Microsoft makes. What we actually have is a team of 15-year-olds playing with an elephant gun and an angry elephant- people get trampled, because the developers do not know how to solve their problem.

>The moral is that you don't want to use the simple-to-code MS platform when you can get a best-of-breed system, based on Linux and good engineering >for a lot less. IT managers around the world should be looking at this and thinking what similar lessons their IT departments could learn.

The moral is that it you're developing something as critical as handling all the monetary transactions of a stock exchange, you want to do your damndest to actually hire developers who know what they're doing!

Comment Re:Obsession (Score 1) 313

Climbing is an obsession and an addiction. It can easily take over your life, especially if you are good at it. Finding your next route is like getting in your next fix. It offers the ultimate escape, diversion and self-esteem. In a sense, it is a power trip. The kind of rush you experience when your skills pay off is incredible. For some, it is a rush better than sex and drugs combined. It adds a new dimension to an otherwise mundane and seemingly predictable reality. Some perspective ;)

Hunting is an obsession and an addiction. It can easily take over your life, especially if you are good at it. Finding your next deer is like getting in your next fix. It offers the ultimate escape, diversion and self-esteem. In a sense, it is a power trip. The kind of rush you experience when your skills pay off is incredible. For some, it is a rush better than sex and drugs combined. It adds a new dimension to an otherwise mundane and seemingly predictable reality. Some perspective

Running is an obsession and an addiction. [...] Finding your next route is like getting in your next fix. [...] Some perspective

Fly fishing is an obsession and an addiction. Finding your next hole is like getting in your next fix. [...] Some perspective

Skiing is an obsession and an addiction. Finding your next hill is like getting in your next fix. [...] Some perspective

Shall I continue?

Comment Re:So, What's the *Actual* WinVista ONLY use? (Score 1) 595

From the original data, "Windows" and "Microsoft" are synonymous, unless Windows is specified as Vista, XP, or 2000. The actual data is as follows:

Windows XP 66.31%
Windows Vista 20.45%
MacIntel 6.51%
Mac OS 2.35%
Windows 2000 1.56%
Linux 0.83%
Windows NT 0.77%
iPhone 0.37%
Windows 98 0.29%
Windows ME 0.17%
Windows CE 0.05%
Pike 0.05%
Unknown 0.05%
iPod 0.05%
Series60 0.03%
Hiptop 0.03%
PLAYSTATION 3 0.02%
PSP 0.02%
Windows 95 0.01%
SunOS 0.01%
Nintendo Wii 0.01%
Win64 0.01%
FreeBSD 0.01%
Wi 0.00%

From:
http://marketshare.hitslink.com/operating-system-market-share.aspx?qprid=10

They claim these are actual usage statistics (presumably from net usage, so already a bit dubious regarding older systems), not sales statistics. It looks like MacOS and MacIntel are "Apple"- I'm assuming MacOS is everything not running on Intel chips, and MacIntel is the newer OSX versions. They seem to group everything "linux" as anything with the Linux kernel. Again, these are net machines, so there's no accounting for server usage. Hate to say it, but this is not the Year of the Linux Desktop. This is more likely the Year of the Apple Anti-trust Lawsuit.

Comment Re:Hmmm... (Score 1) 727

"
As a result, it tends to get waved away as "magic" or "this will be explained later" but there's so much waved away that the students get disconnected. For instance, to simply output a line to a command line in Java you're looking at
System.out.println("output");
whereas with c++ (for instance) you have
cout "output" endl;
As someone who's teaching this stuff, the second is easier to explain in detail and doesn't rely on saying "don't worry what System.out is".
"

I think both have an equal amount of hand-waving.

System is a class that contains many useful run-time features your program can use. The out property is a way to write to the console. The println method of the System.out reference is a way to write text or other objects to the standard out, with an appended new line. If it gets passed an object, it calls the object's toString method first, giving each object control over how to display itself

The is an operator that is overloaded by many classes. The cout overloads the operator to print to standard out. The cout itself requires a bit of hand waving. Also, you need to return an int from the main (Why? Don't worry, just return 0), you need to import a namespace, and you need to explain that endl is a magic (but platform independent) line terminator.

Guess what? There is no good language to teach computer science in. They all require a lot of hand-waving for the intro programmer. The college I go to is shifting very heavily to not using any language in the first semester of the CS program. It's entirely flowcharting and basic UML- design first. 2nd semester is Java, 3rd semester is Data Structures (using JCF). 4th semester is C and Assembler. Junior and Senior years are electives, including Architecture, Distributed, Networking, Graphics, OSes, and Compilers. Also required is an internship.

A great programmer doesn't give a rats ass about what language they're programming in. A great programmer will program into the language, using the language to the best of its ability. A great programmer will, however, choose languages and environments that give them their greatest desire: the ability to be lazy. Good CS programs will teach people how to program, not what to program. Good professors must find a way to present all aspects of CS in an appropriate fashion, and that does mean design first.

Comment Re:Dunno, but I'm blaming the crooks (Score 1) 96

You're assuming the "wannabe crook" is actually a crook. I don't get that impression. It seems that Mom & Pop simply didn't know much about this new-fangled "Google" thing, and someone came up and said with confidence "I can make Google work for YOU!" Still not knowing about Google or the internet, Mom & Pop said "Ok, sounds good. You seem like a nice guy, and guarantee me 100% return on investment, sure I'll pay for that." Now, Crook has come close to committing fraud by mis-selling his services. Google did what Google does well- whacked the SEO (the crook). The only thing Mom & Pop should have done differently was a bit of research.

Sci-Fi

Arthur C. Clarke Is Dead At 90 538

Many readers are sending in word that Arthur C. Clarke has died in Sri Lanka. He wrote over 100 books including 2001: A Space Odyssey and Rendezvous With Rama, and popularized the ideas of geosynchronous communications satellites and space elevators.
Handhelds

Nokia Unveils Shape Changing Nano-phone Concept 89

An anonymous reader writes "Morph, a joint nanotechnology concept developed by Nokia Research Center and the University of Cambridge, has gone on display as part of the "Design and the Elastic Mind" exhibition at The Museum of Modern Art in New York. The concept demonstrates how future mobile devices might be stretchable and flexible, allowing the user to transform the gadget into radically different shapes. Nokia said that elements of Morph might be integrated into handheld devices within seven years, though initially only at the high end."
Space

Computer Model Points To the Missing Matter 97

eldavojohn writes "There exists a little-known problem of missing regular matter that has perhaps been overshadowed by the mysteries of dark matter and dark energy. Computer models show that there should be about 40% more regular matter than we see... so where is it? From the article: 'The study indicated a significant portion of the gas is in the filaments — which connect galaxy clusters — hidden from direct observation in enormous gas clouds in intergalactic space known as the Warm-Hot Intergalactic Medium, or WHIM, said CU-Boulder Professor Jack Burns... The team performed one of the largest cosmological supercomputer simulations ever, cramming 2.5 percent of the visible universe inside a computer to model a region more than 1.5 billion light-years across.' This hypothesis will be investigated and hopefully proved/disproved when telescopes are completed in Chile and the Antarctic. The paper will be up for review in this week's edition of the the Astrophysical Journal."

Invisible Unmanned Aircraft 241

MattSparkes writes, "A Minnesota company, VeraTech, has applied for a patent on an unmanned drone that is nearly invisible to the naked eye. The Phantom Sentinel takes advantage of the phenomenon where fast moving objects appear as only a blur, so it fades out of view once it speeds up. This is achieved by rotating the entire craft. The center of gravity is in open air between two of the blade-like wings. There are some videos of a prototype in action on the VeraTech site." The company says you could get usable video of the terrain by processing the images from a spinning camera. One version of the drone is small enough to launch by throwing it like a boomerang. And it folds for travel.

Student Suspended Over IM Icon 652

Chris Reimer writes "C|Net News.com is reporting that a 15-year-old student lost a lawsuit over having an instant messenger icon that represented a death threat against an English teacher on his personal computer that another student reported to school authorities. From the article: 'His parents sued, claiming that the icon was protected by the First Amendment's guarantee of freedom of speech, that the school district failed to train staff in proper threat assessment and that the school board violated state law in not following proper procedures. [The judge] Mordue rejected the free-speech claims.'"

What Do Geek Squad Technicians Actually Do? 1065

Zenitram asks: "I am a lead technician at a company that repairs computers for various vendors. Many of our systems are from Best Buy's Geek Squad. Based on the systems Geek Squad sends us, it makes me wonder what, if anything, do they actually do? We get systems that have issues that we simply shouldn't have to work on, like: installing device drivers, OS reloads, and reseting CRUs (Customer Removable Units). Additionally, we get systems that are misdiagnosed such as: bad hard drive when a system has faulty RAM; no POST when it simply won't boot into Windows; or no boot when it won't power on at all. So, what is the scope of technical repair that Geek Squad techs do?"

Final Fantasy vs. Oblivion 141

An anonymous reader writes "bit-tech has up a short comparison between Final Fantasy VII and Oblivion. While Oblivion is touted as the latest and greatest PC-based RPG, Final Fantasy VII is held in the minds of many gamers as the best RPG of all time. From the article: 'At the time of its release, nearly ten years ago, FFVII received rave reviews from the press and the public, and it has a claim to being the best loved Final Fantasy game ... In a Top 100 Games of all time, it would be up there in the single digits. It is, by all accounts, Sergeant Pepper-Citizen Kane great. If something is great, it should be great whenever you pick it up -- buy a fresh copy of Pepper or Kane now and they'll still blow you away: they were great in '67 and '41, and they're great now. Is the same true of FFVII?'"

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