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Is Storage Necessary For Renewable Energy?

HuguesT Re:Why not grid level storage? (435 comments)

There is the problem of capacity and storage,

According to the same web site you quote, a reasonably optimistic target is 20% PV, 20% wind by 2030. The rest (60%) must be provided by something else. I don't think coal or nuclear is quite dead yet (unfortunately).

2 days ago
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Is Storage Necessary For Renewable Energy?

HuguesT Re:Expert?? (435 comments)

Very bad physicist then, then one who could not understand why lantern batteries wouldn't start his car. Any self-respecting physicist, even a theorist, knows about intensity and power.

3 days ago
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New Watson-Style AI Called Viv Seeks To Be the First 'Global Brain'

HuguesT Re:Watson is not AI (161 comments)

A symphony is hard work, but many people can compose a song, not a very good one, mind you. Anybody can learn chess and even become reasonably proficient. Not grandmaster or anything, but decent. Basic algebra is taught to everybody in middle school, so I think you are a bit pessimistic.

4 days ago
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Apple's Diversity Numbers: 70% Male, 55% White

HuguesT Re:Stupid (557 comments)

By the way I think the policy of Apple to staff their store with Apple employees is excellent for the brand. Others would set up a kind of franchise, which would be cheaper but probably not as effective.

about a week ago
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Facebook Seeks Devs To Make Linux Network Stack As Good As FreeBSD's

HuguesT Re:Why not just use FreeBSD then? (195 comments)

May be multiple issues. Perhaps better OpenMP support ? maybe NUMA ? Maybe Linux has a better virtual machine infrastructure ? maybe hardware support.

about two weeks ago
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Facebook Seeks Devs To Make Linux Network Stack As Good As FreeBSD's

HuguesT Re:This does pose the question: (195 comments)

I love FreeBSD, I support them financially every year, and I use it daily but it is not uniformly better than Linux. Hardware support, in particular, is very far behind. Two random examples:

1- My NAS system does not recognise any USB storage when they are plugged in after boot (no hotplug). It does not support USB superspeed (USB 3.0) either (I have to boot in compatibility mode by disabling xHCI in the BIOS). This is a known issue with some Asus motherboards, still unfixed in 10.0
2- FreeBSD does not install on some of my HP G6 servers. The kernel simply segfaults. I really wanted FreeBSD on this hardware, so I run it in a VM under Linux (using KVM). Has been running brilliantly for about 2 years now.

Also security update in FreeBSD are really difficult. I haven't finished dealing with updating my ports since I moved from 9.2 to 9.3 last week.

I have to say this though: when it runs, it runs really well.

about two weeks ago
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UK To Allow Driverless Cars By January

HuguesT Re:Not deploying driverless cars kills people (190 comments)

That's a good point, however driverless cars are still being used in very controlled situations, and for the moment require a huge, expensive array of sensors coupled with fragile, powerful and expensive computers. Even if we wanted we could not replace a significant number of cars on the road with driverless ones. The problem is not some kind of legal or administrative red tape, the problem is to make the technology simple enough, robust enough and cheap enough that it comes by default on most new cars like electronic injection did a few years back. Then it is a problem of waiting for a number of years for these cars to replace the old ones on the road.

This is still a ways off.

about three weeks ago
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Vint Cerf on Why Programmers Don't Join the ACM

HuguesT Re:Complexity (213 comments)

Actually, searching for "Reduction of inter-block artifact in DWT" should produce IEEE articles, most probably from the Transactions on Image Processing journal or Transactions on Signal Processing.

And indeed they do. My technical searches always include at the very top the most relevant academic papers from scholar.google.com

Blocking-artifact reduction in block-coded images using wavelet-based subband decomposition
H Choi, T Kim - Circuits and Systems for Video Technology, , 2000 - ieeexplore.ieee.org

Inter-frame wavelet transform coder for color video compression

S Zafar, YQ Zhang - US Patent 5,495,292, 1996 - Google Patents

Embedded image coding using zerotrees of wavelet coefficients
JM Shapiro - Signal Processing, IEEE Transactions on, 1993 - ieeexplore.ieee.org

Blocking artifact detection and reduction in compressed data
GA Triantafyllidis, D Tzovaras - Circuits and Systems for , 2002 - ieeexplore.ieee.org

Perhaps the solution is for you to make a Google Scholar profile and you will get those as well?

about three weeks ago
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VP Biden Briefs US Governors On H-1B Visas, IT, and Coding

HuguesT Re:Appre (225 comments)

This is not so insightful.

1- Foreigners who do come to America and then leave after a short period (a few years) do not take long-term jobs away from Americans. Clearly the jobs these undertake are like internships, post docs and other temp positions, these jobs are not meant as career jobs who would be of interest to an American.
2- Foreigners who come to America, get some training and then leave are *good* for America. These people will know and like America, will speak english, will have a network of friends and people they know back in America. If they start companies, maybe these companies will be friendly to America as well: import stuff from there, rely on American technology, and whatnot. The importance of creating goodwill cannot be overestimated.

How people who come on a H1B for a non-training job, and then stay by being sponsored for a green card, this is a different story. But notice that these people eventually become American. This has been a recognised way to extend the power and importance of the USA for a long time, because the best and brightest come to America to the detriment of the country they leave.

In reality the job situation in the USA is not nearly as dire as some people make it, compared with most other countries around the world. What is not so nice is that unemployed people have it very tough, very quickly. Better not fall sick.

about a month ago
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Dropbox Head Responds To Snowden Claims About Privacy

HuguesT Re:Cloudy, chance of rain (176 comments)

Exactly. Also the NSA doesn't even need warrants. How convenient for them that everyone is leaving these fine files in the same place for them to search...

about a month ago
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No RIF'd Employees Need Apply For Microsoft External Staff Jobs For 6 Months

HuguesT Re:I was in the same situation once (282 comments)

Won't work, because most employees would rather use the cash than save it. Then society would have a massive influx of destitute, retirement-age people, which *would be* a problem. It's been done in the past with catastrophic results.

about a month ago
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Favorite "Go!" Phrase?

HuguesT Others (701 comments)

1) Roulez p'tit bolide

2) En avant, Guingamp

about 1 month ago
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Math, Programming, and Language Learning

HuguesT Re:I disagree (241 comments)

Your reply is very interesting and outlines the fact that one should not stop learning after school, but instead revisit past and new subjects with a different eye and different tools. Also motivation is the prime mover here.

about a month ago
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Math, Programming, and Language Learning

HuguesT No math compiler (241 comments)

Computer programming can be seen as more rigorous than mathematics because if the written program is not correct, the executable will not run; whereas a mathematical proof may contain elements that are not completely described but part of mathematical lore. However we do not possess a compiler for mathematics. Conversely language may be more abstract than mathematics because language, in addition to mathematics, may express information that is not mathematics, e.g. poetry, imagerie, etc. However mathematical abstraction is also very rigorous, which is not the case of poetry or other literary constructs.

Mathematics is unique in requiring both a high level of abstraction and rigour at the same time, yet this must be performed without any artificial help like a debugger or compilers. In addition, creative mathematics require a high level of intuition and the capacity to concentrate on a specific problem for long periods of time (months, sometimes). Altogether, mathematics requires specific talents that are fairly rare and not necessarily found in programmers or writers.

Fortunately we are not all alike.

about a month ago
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Elite Group of Researchers Rule Scientific Publishing

HuguesT Side effect of grant structure (123 comments)

Grant money is given preferably to teams that already publish a lot. Even "starting grants" in the EU require a single principal investigator (PI) with a lot of well-cited publication under their belt. This can only be achieved if the PI has done their initial research in a well-heeled lab, with a well-known head of the lab who is well-connected, and so on. This encourages a pyramidal structure with a lot of grunt students at the bottom, supervised by post-docs, supervised by assistant professors, and so on. Success encourages visibility, which encourages grants, which ensures money, which ensures good grunt students can be hired, and so on.

This is not the only possible successful structure, but one of the most common. A single researcher, however brilliant, cannot usually keep up with the outpouring of landmark papers the pyramidal structure can achieve. On the other hand, if everybody does their job, meritocracy in the pyramidal structure ensures that the best grunt students get promoted to post docs, and so on, usually in a different pyramidal structure.

The big drawback of the pyramidal structure is that the prof at the top usually doesn't know exactly what is going on at the bottom, even though they put their name on most of the papers that the structure produces.

Disclaimer: I'm a tenured prof. I do have a reasonable number of students, but I work with them directly. All my students are co-supervised with at least one other prof. Occasionally I do have a few post-docs but the structure is always collaborative. This is not the standard but this works well enough also as long as there isn't any ego-driven fights in the lab. This means choosing your collaborators well. I've made a few mistakes, but so far so good.

about a month ago
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NSA Considers Linux Journal Readers, Tor (And Linux?) Users "Extremists"

HuguesT Re:Well, of course (361 comments)

If you look at just about anybody's success story, the first thing that is of utmost importance is being in the right place at the right time. In other words, luck. The American dream has always been a dream. I'm not convinced that anything much has changed in the last 70 years about this, i.e. since about the end of WWII. Sure hard work is a factor but by no means the only one.

about a month and a half ago
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Ask Slashdot: Switching From SAS To Python Or R For Data Analysis and Modeling?

HuguesT Re:R... (143 comments)

Not all libraries. OpenCV for instance.

about a month and a half ago
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Ask Slashdot: Switching From SAS To Python Or R For Data Analysis and Modeling?

HuguesT Re:Python is better overall but R is more like SAS (143 comments)

Inefficient (two interpreters), inelegant (two syntaxes), and there is usually no point to it. Both languages are roughly as capable.

about a month and a half ago

Submissions

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French supreme court neutralizes 3-strikes law

HuguesT HuguesT writes  |  more than 5 years ago

HuguesT (84078) writes "The Conseil Constitutionel, the French equivalent to the US Supreme Court, ruled today that a mere "authority" cannot cut Internet access to Internet subscribers within the frame of the new HADOPI law recently voted by French parliament. In the new law, after a warning by email and another by registered mail, French Internet subscribers could have had their access cut off for a duration ranging between 2 months and one year, without possibility of defence or due process of law, if they were accused of illegally sharing copyrighted material. They could only appeal of the decision before a court of law. The CC "sages" or wise men, ruled that this was unconstitutional on two grounds: the presumption of innocence and freedom of communication and expression. Now the laws has basically no point. The French communication minister, Christine Albanel, has vowed to return to parliament with a new law still implementing the 3 strikes in a new, as yet unknown way. For the time being, strike one for democracy and freedom!"
Link to Original Source
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Gates foundation deathly side-effects

HuguesT HuguesT writes  |  more than 6 years ago

HuguesT (84078) writes "An long and detailed article from the L.A. Times points out severe, unintended side effects of the health policies of the Bill & Melinda Gates foundation. This foundation has given away almost 2 billions US$ to the fight against AIDS, TB and Malaria worldwide. Thanks in no small measure to this effort, the death toll from AIDS in most of Africa are finally levelling off. However, the money from the foundation is earmarked to the fight against these three diseases, to the detriment of global health. Sick people can also be hungry and not able to ingest healing drugs. Doctors in these countries prefer to be well paid working against AIDS than poorly working against all the other health problems, which creates a brain drain. Numerous children also suffer from diarrhea or asphyxia due to lack of basic care. The paradox is that countries where the foundation has invested most have seen their mortality rate increase, whereas it has improved in countries where the foundation was least involved."
Link to Original Source

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