Please create an account to participate in the Slashdot moderation system

 



Forgot your password?
typodupeerror

Comment: Koomey's law (Score 4, Interesting) 101

by Sara Chan (#49474601) Attached to: Fifty Years of Moore's Law
Moore's law is sort of a mangled version of Koomey's law. Koomey's law states that the number of computations per joule of energy dissipated has been doubling every 1.6 years. It appears to have been operative since the late 1940s: longer than Moore's law. Moreover, Koomey's law has the appeal of being defined in terms of basic physics, rather than technological artefacts. Hence, I prefer Koomey's law, even though Moore's law is far more famous.

There is another interesting aspect to Koomey's law: it hints at an answer to the question "for how long can this continue?" The hinted answer is "until 2050", because by 2050 computations will require so little energy that they will face a fundamental thermodynamic constraint—Landauer's principle. The only way to avoid that constraint is with reversible computing.

Comment: CFR Science Lecture on Rise of Robots (Score 1) 101

by Sara Chan (#49375889) Attached to: Robots4Us: DARPA's Response To Mounting Robophobia
The Council on Foreign Relations recently had its Annual Lecture on Science and Technology: the topic was "Artificial Intelligence and the Rise of Robots". The panelists were Rodney Brooks (MIT), Abhinav Gupta (CMU), and Andrew McAfee (MIT). The video is available. Robophobia was one of the main themes.

Comment: Pao is like her husband with lawsuits (Score 4, Informative) 365

For some great background on how corrupt Pao and her husband are, see "Some Thoughts on Ellen Pao’s Marriage", by Richard Bradley. Basically, Pao's husband has a history of dubious lawsuits, and Pao seems to have gone along in his family suing business.

+ - Court overturns Dutch data retention law, privacy more important-> 1

Submitted by wabrandsma
wabrandsma writes: DutchNews.nl writes:
Internet providers no longer have to keep their clients phone, internet and email details because privacy is more important, a Dutch court ruled on Wednesday.

Digital Rights organisation Bits of Freedom writes in a Blog:
The law’s underlying European directive was meant as a tool in the fight against serious crimes. The Dutch law, however, is much more expansive, including everything from terrorism to bike theft. During the hearing, the state’s attorneys avowed that the Public Prosecution does not take the law lightly, and would not call on the law to request data in case of a bicycle theft. The judge’s response: it doesn’t matter if you exploit the possibility or not, the fact that the possibility exists is already reason enough to conclude that the current safeguards are unsatisfactory.

Link to Original Source

Comment: Hillary on e-mail, in 2000 (Score 3, Informative) 609

by Sara Chan (#49233111) Attached to: Clinton Regrets, But Defends, Use of Family Email Server
Here is a quote from Hillary, video recorded in 2000, when she was a Senator.

As much as I’ve been investigated and all of that, you know, why would I—I don’t even want—why would I ever want to do e-mail? .... Can you imagine?

Source: http://www.buzzfeed.com/andrewkaczynski/watch-an-old-home-movie-from-2000-where-hillary-clinton-said#.re86K3GRo

When she became Secretary of State, she had to use e-mail. Hence, she got her own private server (at home where it was under protection of the 4th Amendment).

Comment: Printing out the e-mails (Score 4, Insightful) 609

by Sara Chan (#49232581) Attached to: Clinton Regrets, But Defends, Use of Family Email Server
Clinton printed over 50,000 pages of e-mails, which were then shipped to the State Department. It would have been less work for her to send those e-mails electronically. What was her purpose in doing that extra work?

Printed texts take more time to search, and they do not contain all the internal meta-data. Perhaps too she just wanted to show her middle finger to the people who asked for her e-mails.

This is honorable behavior?

Comment: This would benefit from improvement (Score 3, Insightful) 93

by Sara Chan (#49231917) Attached to: Linux Kernel Adopts 'Code of Conflict'

If ... anyone feels personally abused, threatened, or otherwise uncomfortable due to this process, that is not acceptable.

It does not matter how every person feels. There are some people who get offended about almost anything. The above quote seems to be part of the extreme political correctness that is infecting society—I never imagined that Linux development would go that way. Additionally, if people feel “uncomfortable”, that might well be well warranted and help them to develop.

The quote would be better replaced by something that omits mention of feelings (which are internal and cannot be independently assessed). I suggest appealing to the “reasonable person”, as is commonly done in law. Here is an example: “Personal abuse and threats are unacceptable, as is any behavior that reasonable people would deem to be highly or persistently offensive”.

Comment: Five reasons to blame Apple (Score 3, Informative) 311

by Sara Chan (#47820187) Attached to: Apple Denies Systems Breach In Photo Leak
There is a good article "Five reasons to blame Apple in nude celebrity photo leak", in The Hamilton Spectator. Here are the key points (read the article for elaborations).

1. The vulnerability is Security 101 stuff (even a good password, like “D0nM@tt1ngly!”, was still vulnerable).
2. The vulnerability was publicly known since May.
3. Apple defaults users into the cloud (and Apple makes it very hard to not store in the cloud).
4. Apple does not encourage two-factor authentication (it discourages this).
5. Two-factor authentication wouldn't have worked anyway (it is not actually enforced on iCloud).

+ - NSA was the sole editor of ISO crypto-PRNG standard

Submitted by Sara Chan
Sara Chan writes: A Congressman, Alan Grayson, has sent a letter to the Director of National Intelligence, James Clapper. The letter asks several questions, in particular, this one: "How did the NSA become the sole editor of the ISO 18031 specification?" ISO 18031 specifies a model for a pseudorandom number generator that is suitable for cryptography. Thus, according to the letter, the NSA was the sole editor of an ISO cryptographic standard. The letter will probably not do much, though, given Clapper's prior perjury.

+ - NASA Confirms New EM Thruster Violates Laws Of Conservation

Submitted by Crudely_Indecent
Crudely_Indecent writes: Mentioned here in a previous story ( http://slashdot.org/story/06/0... ), the EM thruster that generates thrust using no fuel, only electricity has been tested by NASA and confirmed to work!

Is this the Star Trek future tech we've been waiting for?

The NASA report titled "Anomalous Thrust Production from an RF Test Device Measured on a Low-Thrust Torsion Pendulum" was published 3 days ago and can be found here: http://ntrs.nasa.gov/search.js... From the abstract:

This paper describes the eight-day August 2013 test campaign designed to investigate and demonstrate viability of using classical magnetoplasmadynamics to obtain a propulsive momentum transfer via the quantum vacuum virtual plasma.

Comment: Re:New scientist story leaves out a lot (Score 1) 127

by Sara Chan (#47293219) Attached to: Big Bang Breakthrough Team Back-Pedals On Major Result

BICEP2 were a bunch of young upstarts

You got that right. And the tender egos of the Planck team got hurt by the "young upstarts" outdoing them. Awww, how sad.

Fact is, the BICEP2 team got the result and published in a leading journal. The team hardly backtracked at all. For more on this, see the blog post by Lubos Motl: "BICEP2 gets published in PRL".

It is pathetic how established scientists try to protect their egos from "young upstarts".

+ - Intel's Knights Landing - a 72 core, 3 teraflop beast->

Submitted by asliarun
asliarun writes: David Kanter of Realworldtech recently posted his take on Intel's upcoming Knights Landing chip. The technical specs are startling massive and shows Intel's new found focus on throughput processing (and possibly graphics). 72 Silvermont cores with beefy FP and vector units, mesh fabric with tile based architecture, DDR4 support with a 384bit memory controller, QPI connectivity instead of PCIe, and 16GB on-package eDRAM (yes, 16GB!). All this should ensure throughput of 3 teraflops/s double precision. Many of the architectural elements would also be the same as Intel's future CPU chips — so this is also a peek into Intel's vision of the future. Will Intel use this as a platform to compete with nVidia and AMD/ATI graphics? Or will this be another Larrabee? Or just an exotic HPC product like Knights Corner?
Link to Original Source

An inclined plane is a slope up. -- Willard Espy, "An Almanac of Words at Play"

Working...