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Comment Fusion != Radiation Free (Score 1) 315

According to the comments in the article this is based off of Deuterium, Tritium (D-T) fusion (which is the easiest to do). 80% of the energy from D-T fusion is in the form of high energy neutrons. The neutron flux is 100 times more than in conventional fission reactors which causes high levels of radiation in the vessel containing the fusion ( fusion vacuum vessel too hot for one year").

Tritium is not plentiful on this planet, so one solution that may solve both the high speed neutron energy capture and the breeding of Tritium is to surround the D-T reaction with Lithium which will 1) absorb the neutron's energy, and 2) create Tritium and Helium from the Lithium. So now we have electricity storage (Lithium batteries) and electricity generation (D-T fusion) bottle-necked by the same element: Lithium

Note that Tritium is radioactive and could leak or experience containment issues.

I am not so certain this will solve anything that current generation fission reactors don't solve just as well, except marketing / branding: I think selling the people on a fusion reactor in their backyard is easier than the fission one.

Comment D-T fusion (Score 2) 232

According to wikipedia they are planning to use Deuterium-Tritium fusion reaction which makes the majority of energy through high speed neutrons: D-T reaction, which are notoriously difficult to extract energy from. Letting the neutrons bombard a stainless steel shell, which gets hot, heats water, turns a turbine, is the standard way to do things, but the steel shell becomes brittle and radioactive pretty quickly. I hope this actually solves something rather than simply being another method to use more exotic fuel, and reactor equipment, to produce radioactive results along with power.

Comment Re:Should be a tax on every transaction (Score 1) 251

Please realize that the SEC levies a tax on every transaction (buy and sell) http://www.sec.gov/News/PressRelease/Detail/PressRelease/1365171514024#.UjHRW6BTO5M

Also the market has a fee structure that charges if one take liquidity (order execute immediately and takes an order off the book) and gives a rebate on orders that provide liquidity (order remains on book for some period of time). http://www.nasdaqtrader.com/trader.aspx?id=pricelisttrading2

In my opinion a better solution is for the market to increase the minimum latency for a transaction. For example, every second all the orders sent to the exchange are reconciled and the results sent to the originators of the orders, as well as the updating all public data like national best bid, best ask prices. This would almost completely neuter very high speed trading engines, as their data and updates on filled orders would be the same as everyone else, viz. 1 second. Note, the 1 second is an arbitrary amount of time, but I would fix it to be several times a minute, but no faster than 500 ms.
Power

Submission + - Is it worth investing in a high-efficiency power supply? (extremetech.com)

MrSeb writes: "If you’ve gone shopping for a power supply any time over the last few years, you’ve probably noticed the explosive proliferation of various 80 Plus ratings. As initially conceived, an 80 Plus certification was a way for PSU manufacturers to validate that their power supply units were at least 80% efficient at 25%, 50%, 75%, and 100% of full load. In the pre-80 Plus days, PSU prices normally clustered around a given wattage output. The advent of the various 80 Plus levels has created a second variable that can have a significant impact on unit price. This leads us to three important questions: How much power can you save by moving to a higher-efficiency supply, what’s the premium of doing so, and how long does it take to make back your initial investment? ExtremeTech investigates."
Intel

Submission + - Intel Announces Atom S1200 SoC For High Density Servers (hothardware.com)

MojoKid writes: "Intel has been promising it for months, and now the company has officially announced the Intel Atom S1200 SoC. The ultra low power chip is designed for the datacenter and provides a high-density solution designed to lower TCO and improve scalability. The 64-bit, dual-core (four total threads with Hyper-Threading technology) Atom S1200 underpins the third generation of Intel’s commercial microservers and feature a mere 6W TDP that allows a density of over 1,000 nodes per rack. The chip also includes ECC and supports Intel Virtualization technology. Intel saw a need for a processor that can handle many simultaneous lightweight workloads, such as dedicated web hosting for sites that individually have minimal requirements, basic L2 switching, and low-end storage needs. Intel did not divulge pricing, but regardless, this device will provide direct competition for AMD's SeaMicro server platform."
Microsoft

Submission + - Microsoft Surface deemed a dud, Q4 sales could come in below 1M units (bgr.com) 1

zacharye writes: While some see potential in Microsoft’s Surface tablet, most industry watchers appear to have written off the device at this point. Orders were reportedly cut in half following a slow launch, and Microsoft’s debut slate has been hammered time and time again by reviewers and analysts. The latest to pile on is Boston-based brokerage firm Detwiler Fenton, which estimates that when all is said and done, Microsoft will have sold fewer than 1 million Surface tablets in the slate’s debut quarter...
The Military

Submission + - Congress Wants Broken Laser to Zap North Korea's Broken Missiles (wired.com)

__aaqpaq9254 writes: Noah Schactman has a great piece on the Airborne Laser, the ray gun-equipped 747 that became a symbol of wasteful Pentagon weaponeering. Despite sixteen years and billions of dollars in development, the jet could never reliably blast a missile in trials. Now the House Armed Services Committee’s Strategic Forces wants the Airborne Laser to be used to defend us against the threat of North Korea's failed missiles. Really good read.
Network

Submission + - Ask Slashdot: Home IT Rack 1

jawtheshark writes: "I'm building a house, and obviously I want a modest network built-in. Nothing fancy, two RJ-45 per room, four in the living room, and that's basically it. I already got myself a rack mountable Cisco Small Business switch and I have a self-built 4U server (low-power, won't make much heat) which can be rack mounted (505mm deep).

Now, the construction company suggests a wall mounted rack (6U: 340mm x 600mm x 480mm — 6U definitely won't be enough, but a 12U model exists). It's not expensive, but I have never worked on a rack where the backside is unreachable. (For work, I get to work in a data center with huge racks that are accessible from both sides). Now obviously, I don't need a data center-grade rack, but these wall-mounted racks scream "switch-only" racks to me. What are your experiences? Is it possible to put servers in racks like these, or should I find a "both-side-accessible" rack instead?"
Intel

Submission + - Watch out, Raspberry Pi: Intel unveils tiny Next Unit of Computing PC (extremetech.com)

MrSeb writes: "Details of a new, ultra-compact computer form factor from Intel, called the Next Unit of Computing (NUC) are starting to emerge. First demonstrated at PAX East at the beginning of April, and Intel’s Platinum Summit in London last week, NUC is a complete 10x10cm (4x4in) Sandy Bridge Core i3/i5 computer. On the back, there are Thunderbolt, HDMI, and USB 3.0 ports. On the motherboard itself, there are two SO-DIMM (laptop) memory slots and two mini PCIe headers. On the flip side of the motherboard, is a CPU socket that takes most mobile Core i3 and i5 processors, and a heatsink and fan assembly. Price-wise, it's unlikely that the NUC will approach the $25 Raspberry Pi, but an Intel employee has said that the price will "not be in the hundreds and thousands range." A price point around $100 would be reasonable, and would make the NUC an ideal HTPC or learning/educational PC. The NUC is scheduled to be released in the second half of 2012."
Bitcoin

Submission + - Bitcoin startup attracts $500,000 in Venture Capital

Sabbetus writes: Seattle based Bitcoin startup CoinLab secured a $500,000 investment from various investors such as Silicon Valley firm Draper Associates and angel investor Geoff Entress. CoinLab is an emerging umbrella group for cultivating and launching innovative bitcoin projects. CEO Vessenes said “if there is a currency that can trade around the world, it’s semi-anonymous, it’s instant, it’s not controlled by government or bank, what’s the total value of that currency? The answer to that is, if it works, it’s gotta be in the billions. It just has to be for all the reasons you might want to send money around the world.” This type of talk is common from Bitcoin enthusiasts but apparently seasoned investors are starting to agree. The Forbes article explains the details of their business plan but in short it has to do with tapping the GPU mining potential of gamers, more specifically gamers of free-to-play games. This would add a new revenue stream for online game companies that are trying to provide free games profitably.
Idle

Submission + - Microsoft's Hotmail challenge backfires (pcpro.co.uk)

Barence writes: "Microsoft challenged the editor of PC Pro to return to Hotmail after six years of using Gmail, to prove that its webmail service had vastly improved — but the challenge backfired when he had his Hotmail account hacked.

PC Pro's editor say he was quietly impressed with a number of new Hotmail features, including SkyDrive integration and mailbox clean-up features. He'd even imported his Gmail and contacts into Microsoft's service. But the two-week experiment came to an abrupt end when Hotmail sent a message containing a malicious link to all of his contacts.

"What’s even more worrying is that it’s not only my webmail that’s been compromised, but my Xbox login (which holds my credit card details) and now my PC login too. Because Windows 8 practically forces you to login with your Windows Live/Hotmail details to access features such as the Metro Store, synchronisation and SkyDrive," he writes."

Cloud

Submission + - The Risk of a Meltdown in the Cloud (technologyreview.com)

zrbyte writes: A growing number of complexity theorists are beginning to recognize some potential problems with cloud computing. The growing consensus is that bizarre and unpredictable behavior often emerges in systems made up of "networks of networks", such as a business using the computational resources of a cloud provider. Bryan Ford at Yale University in New Haven says that the full risks of the migration to the cloud have yet to be properly explored. He points out that complex systems can fail in many unexpected ways and outlines various simple scenarios in which a cloud could come unstuck.
GNOME

Submission + - Fedora 16 And GNOME Shell: Tested And Reviewed (tomshardware.com)

LordDCLXVI writes: Ubuntu and Mint don't want it; Linus called it an “unholy mess.” While most other distros are passing up or postponing GNOME Shell, Fedora is full steam ahead. Does Red Hat know something the rest of us don't? Or is GNOME 3 really as bad as everyone says? This massive article amounts to a full-blown guide to Fedora 16 “Verne” and complete dissection of GNOME Shell. It begins with an installation guide, with instructions for enabling 3rd party repos, proprietary graphics drivers, Wi-Fi, Flash, Java, multimedia codecs, and 32-bit libs. Next up is a GNOME Shell tear-down, including customization options and methods to “fix” the Shell or mimic GNOME 2. Finally, Fedora is benchmarked against Ubuntu 11.10 and Windows 7. The author makes a compelling case for why the GNOME Shell is so disastrous for the GNOME project, and just wrong for Fedora. While he adds to the voices criticizing GNOME Shell, he also points out that the extensions can empower distributors to create unique, yet compatible layouts. One of the most fair and constructive critiques of GNOME 3, definitely worth the read, and even makes GNOME 3 worth a second look.

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