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Comment: That said... (Score 1) 30

by Rei (#47437451) Attached to: Sand-Based Anode Triples Lithium-Ion Battery Performance

... the greater your capacity, the less cycle life matters. If you want an EV that battery that will run a 250Wh/mi vehicle for an average 20 miles a day for 15 years, then you want it to cycle through about 30MWh. If you use a 100 mile (25kWh) battery pack, then that's 1100 cycles. If you use a 200 mile (50kWh) battery pack, then that's 550 cycles. If you use a 400 mile (100kWh) battery pack, then that's a mere 275 cycles. Actually, the improvement is even better than that in the real world, because the greater your capacity vs. how far you're actually driving, the more you can cycle the cells through a less destructive state of charge range rather than doing deep discharges.

A lot of people picture battery packs in EVs backwards, they think that things like hybrids stress the packs the least, PHEVs moderately, and EVs the worst. But it's reversed. If you look at how big hybrid packs are vs. how much electric range they hold, you'll see that they're disproportionately large, even after you factor in any differences in Wh/kg. The reason is that because hybrid packs get cycled so much, they have to keep the cycling in a very narrow state of charge range, only allowing shallow discharges. So if you only have a narrow discharge range, you have to make your pack bigger to make up for it. EVs can discharge through much more of their pack because they need fewer total cycles and only rarely go down toward the lower end of their allowable discharge range. Some EVs also let you limit the max that your pack charges up to to further extend lifespan (it's usually destructive both to use the very top end and the bottom end of the discharge range).

Comment: Re:Correct me if I'm wrong, but... (Score 1) 30

by Rei (#47437401) Attached to: Sand-Based Anode Triples Lithium-Ion Battery Performance

1024 mAhg1 is excellent capacity even vs. brand new graphite or amorphous carbon, about 3x as much as graphite's maximum. Silicon's theoretical max is 8-10x that of graphite, but the main problem with it is durability, it tends to tear itself apart on loading. There are silicon anodes in some newer li-ion cells on the market, but the tech is in its infancy.

That said, the real papers you want to be on the lookout for are cathode improvements, there's a lot more potential for volume/mass reduction there than in the anode. But it seems to be a more difficult challenge. Getting a 3x improvement in anode density is absolutely not the same a getting a 3x improvement in battery life.

Comment: Re:Little Bit of History Repeating. (Score 1) 30

by Rei (#47437377) Attached to: Sand-Based Anode Triples Lithium-Ion Battery Performance

Commercial li-ion battery energy densities have continued to improve during that time period, including the commercial introduction of cells with silicon anodes. Of course, silicon anodes are a new tech, so there's a great deal of room for improvement, which probably won't come close to "maxing out" for a decade or more.

Of course, that said, this article is your typical fluff piece following the guidelines of fluff science reporting.

1. Present an oversimplified version of one technology challenge that may or may not address the biggest issue and certainly doesn't address all of them - but don't mention that.
2. Introduce an outside-the-establishment loner with a passion - or at least someone you can try to present as "outside the establishment" and glaze over anyone who helped him.
3. Loner gets a "vision" based on some everyday activity
4. Present their solution and make it out to be a huge revolution that will certainly solve all our problems - if they can only get corporate backing / funding!

I think these sort of articles hurt the image of science because people read them, think "OMG, all our problems are solved!", then when everything's not solved afterward, fail to trust science in the future. For example, in this case, the most important element to improve is the cathode, not the anode. And cathode improvements are less common and usually less major than anode improvements. There's also tons of different anode improvements out there in various stages of research. Pretty much all of the silicon ones get way better than graphite or amorphous carbon.

That doesn't mean that this isnt an important paper - actually, from looking at it, it looks pretty good. It's just not "all that".

BTW, anyone know how credible this journal is? I see it's hosted on Nature.com but not part of Nature, and I tried to find an impact rating for it but couldn't.

+ - The ultimate goal of the NSA is total population control

Submitted by stephendavion
stephendavion (2872091) writes "William Binney is one of the highest-level whistleblowers to ever emerge from the NSA. He was a leading code-breaker against the Soviet Union during the Cold War but resigned soon after September 11, disgusted by Washington’s move towards mass surveillance.

On 5 July he spoke at a conference in London organised by the Centre for Investigative Journalism and revealed the extent of the surveillance programs unleashed by the Bush and Obama administrations.

“At least 80% of fibre-optic cables globally go via the US”, Binney said. “This is no accident and allows the US to view all communication coming in. At least 80% of all audio calls, not just metadata, are recorded and stored in the US. The NSA lies about what it stores.”"
Music

Ode To Sound Blaster: Are Discrete Audio Cards Still Worth the Investment? 468

Posted by timothy
from the won't-fit-in-my-phone dept.
MojoKid (1002251) writes "Back in the day (which is a scientific measurement for anyone who used to walk to school during snowstorms, uphill, both ways), integrated audio solutions had trouble earning respect. Many enthusiasts considered a sound card an essential piece to the PC building puzzle. It's been 25 years since the first Sound Blaster card was introduced, a pretty remarkable feat considering the diminished reliance on discrete audio in PCs, in general. These days, the Sound Blaster ZxR is Creative's flagship audio solution for PC power users. It boasts a signal-to-noise (SNR) of 124dB that Creative claims is 89.1 times better than your motherboard's integrated audio solution. It also features a built-in headphone amplifier, beamforming microphone, a multi-core Sound Core3D audio processor, and various proprietary audio technologies. While gaming there is no significant performance impact or benefit when going from onboard audio to the Sound Blaster ZxR. However, the Sound Blaster ZxR produced higher-quality in-game sound effects and it also produces noticeably superior audio in music and movies, provided your speakers can keep up."

+ - How Google Map Hackers Can Destroy a Business at Will->

Submitted by Anonymous Coward
An anonymous reader writes "Wired reports, "Beneath its slick interface and crystal clear GPS-enabled vision of the world, Google Maps roils with local rivalries, score-settling, and deception. Maps are dotted with thousands of spam business listings for nonexistent locksmiths and plumbers. Legitimate businesses sometimes see their listings hijacked by competitors or cloned into a duplicate with a different phone number or website. In January, someone bulk-modified the Google Maps presence of thousands of hotels around the country, changing the website URLs to a commercial third-party booking site ... Small businesses are the usual targets. .... These attacks happen because Google Maps is, at its heart, a massive crowdsourcing project, a shared conception of the world that skilled practitioners can bend and reshape in small ways using tools like Google’s Mapmaker or Google Places for Business. .... Google has gotten much better at policing malicious edits, to the point where they’re rare today. ... The system has loopholes though, and troves of money-hungry spammers looking for weaknesses. In February, an SEO consultant-turned-whistleblower named Bryan Seely demonstrated the risk dramatically when he set up doppelganger Google Maps listings for the offices of the FBI and Secret Service. Seely channeled the incoming phone calls through to the real agencies while recording them. The stunt got a lot of attention. The Secret Service told Seely he was “a hero” for showing them the vulnerability.""
Link to Original Source

+ - Alleged Hooker and Heroin Kill a Key Google exec on his Yacht in Santa Cruz->

Submitted by Anonymous Coward
An anonymous reader writes "Authorities allege model, makeup artist, and self-described "hustler" Alix Catherine Tichelman initially met 51-year-old Google executive Forrest Hayes of Santa Cruz and other Silicon Valley executives at SeekingArrangement.com for sexual encounters that fetched $1,000 or more. Last November 22, Tichelman met Hayes in-person on his white, 50-foot yacht, "Escape," in the Santa Cruz Small Craft Harbor. She brought heroin and needles into the yacht's cabin where she injected Hayes, causing him to overdose, said Santa Cruz Deputy Police Chief Steve Clark.

It has recently become known that a security camera in the cabin showed her pack drugs and syringes into her purse, clean off a table and draw a window blind. When she stepped over Hayes' lifeless body to drink from a glass of wine, she left behind a fingerprint on the glass, which helped investigators to identify her, Clark said. The yacht's captain found Hayes dead the next morning.

Santa Cruz police said they continued to probe Tichelman's possible involvement in another suspicious death out of state, but they declined to elaborate.

Hayes joined Apple in 2005 and worked there for several years, according to a brief profile on the business networking website LinkedIn. He started working for Mountain View-based Google about a year ago and joined its secretive "X" division, which is responsible for what the company likes to call "moon shot" projects including self-driving cars and the computer headset known as Glass.

"Seeking Arrangement," is a website that aims to connect "sugar daddies" and "sugar babies." suggesting, "Financial Stability: Unpaid bills no longer have to be a concern.""

Link to Original Source

Comment: Aaaaahahaha ... gotta love it: (Score 4, Insightful) 128

by Qbertino (#47424285) Attached to: Prof. Andy Tanenbaum Retires From Vrije University

"A multithreaded file system is only a performance hack. When there is only one job active, the normal case on a small PC, it buys you nothing and adds complexity to the code. On machines fast enough to support multiple users, you probably have enough buffer cache to insure a hit cache hit rate, in which case multithreading also buys you nothing." - Andy Tanenbaum on the "LINUX is obsolete" Thread from 30 Jan '92

Nice to see a so called "expert" so far off. Seriously, not the first CS Professor to be completely backwards. I've met a few of those too. :-)

+ - Maldives Denies Russian Claims That Secret Service Kidnapped A Politician's Son

Submitted by Rei
Rei (128717) writes "As was previously reported here, the Russian government has accused the US Secret Service of kidnapping the son of ultranationalist LDPR MP Valery Seleznev in the Maldives. The son, Roman Seleznev, stands accused of running one of the world's largest carding operations, with others charged in the affair having already been convicted; however, Roman had until recently been considered out of reach in Russia. Now the Maldives has struck back against these claims, insisting that they arrested him on an Interpol Red Notice and transferred him to the US, as they are legally required as an Interpol member state to do. “No outsider came here to conduct an operation,” president Abdulla Yameen stated. “No officials from another country can come here to arrest anyone. The government has the necessary documentation to prove it.”"

Comment: Dubai is a Disneyland. Only bigger. (Score 1) 265

by Qbertino (#47423119) Attached to: Dubai's Climate-Controlled Dome City Is a Dystopia Waiting To Happen

Just like most of the Emirates, Dubai is a Disneyland. Only bigger.

Seriously, I don't know what crack these bedus are smoking, but there are more books translated into spanish each year than into any language of the emirates in the past 100 years. These people base huge chunks of their view of the world on an ancient facist monotheistic religion, live in societies that by social structure resemble the grimmest of dark ages, sharia law and all, and all they have is truckloads of money from selling their oil and no real idea what to do with it other than squander obscene amounts of resources to build a huge disneyland out in the desert. The amounts of water wasted alone are beyond imagination.

I'd have no problem with building a high-tech nation within a few years, if I'd actually be seeing some real progress, but I don't. I'm seriously sceptical of Dubai and its likes gaining critical mass and actually building sustainable societies

The prince of Dubai would be well advised to use all that money of his of building universities, implementing basic human rights and getting a modern society going and perhaps building a modern armed force to defend it. Since it doesn't look that way, I'm not placing my bets to high on this whole Dubai thing.

I wouldn't be suprised if this all collapses within 20 years and we have a bunch of impressive ruins but nothing more.

My 2 cents.

Comment: Re: (Score 2) 401

by Rei (#47423005) Attached to: Climate Change Skeptic Group Must Pay Damages To UVA, Michael Mann

He said ice sheet. So we're supposed to ignore what he actually said and assume he meant something completely different? Um, no.

"I am not well read in this department" - wait a minute, you can give exact cites for research papers on sea ice, but don't even have a *general* conception of what percentage of the Antarctic ice sheet is gaining versus what is losing? Something tells me you're just grabbing cites you've never even read from denier websites.

Let me help you out with ice sheet. Pretty much all of the East Antarctic ice sheet is gaining, while pretty much the only area losing is the Antarctic peninsula and surrounding areas in West Antarctica. Now, they're losing *mass* a lot faster per unit area than the east is gaining mass, but in terms of area, the overwhelming majority of Antarctica is gaining ice. Because it almost never gets above freezing there, even in a warming world.

The 2010 paper was evaluating the failed CMIP5 predictions

If you'd actually read the paper, which you clearly haven't, you'd know that they themselves did the CMIP5 runs, it's not CMIP5 runs that had been done earlier. Do you even have a clue what CMIP5 stands for? Coupled Model Intercomparison Project Phase 5. As in, "there were four freaking phases that came before this one". CMIP5 is comprised of all of the latest models from all over the world. They didn't even start planning CMIP5 unitl September 2008. Your notion that this is some sort of review of old climate predictions just shows how terrible your understanding is of what you're talking about and how you don't actually read the papers that you cite, that you're just simply grabbing them from whatever denialist trash websites you read.

Stellar rays prove fibbing never pays. Embezzlement is another matter.

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