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Joris _

SpaceX teams with EADS to go after European launch contracts | Technology | Los Angeles... - 1 views

latimesblogs.latimes.com/...spacex-eads-astrium-nasa.html

spacex launcher

shared by Joris _ on 13 Sep 10 - No Cached
  • it would work with EADS Astrium to market launch services to an array of European space agencies through 2015
  • Astrium, a subsidiary of the French-and-German-owned European Aeronautic Defence and Space Company
Nicholas Lan

hilarious publications list - 2 views

nicolas.gueguen.free.fr/publications.html

fun psychology

shared by Nicholas Lan on 02 Sep 10 - Cached
  • Nicholas Lan on 02 Sep 10
     
    his day to day research experience must be relatively unusual highlights include: - Bust size and hitchhiking: a field study. http://www.ncbi.nlm.nih.gov/pubmed/18380130 'The effect of a joke on tipping when it is delivered at the same time as the bill' http://nicolas.gueguen.free.fr/Articles/JASP2002.pdf "Love is in the air": Effects of Songs With Romantic Lyrics on Compliance to a Courtship Request. http://nicolas.gueguen.free.fr/Articles/PsyMusic2010.PDF and the mostly confusing 'Presence of Various Figurines on a Restaurant Table and Consumer Choice: Evidence for an Associative Link.'
  • Ma Ru on 02 Sep 10
     
    Now that's what I call applied science... will consider applying to his lab for a post-doc!
Joris _

SPACE.com -- Space Beer Headed for Zero Gravity Bar - 0 views

www.space.com/...testing-space-beer-100927.html

shared by Joris _ on 28 Sep 10 - No Cached
  • It may not come in time for Oktoberfest, but the world's first beer to be certified for consumption in space will soon undergo tests in weightlessness to see if it is brewed with the right stuff.
Joris _

Is It Time To Revamp Systems Engineering? | AVIATION WEEK - 1 views

www.aviationweek.com/...story.jsp

engineering

shared by Joris _ on 02 Nov 10 - No Cached
LeopoldS liked it
  • They both believe the systems engineering processes that have served the aerospace and defense community since pre-Apollo days are no longer adequate for the large and complex systems ­industry is now developing.
  • Joris _ on 02 Nov 10
     
    1) it has to actively work and produce a result that's what you intended 2) the design must be robust. 3) it should be efficient 4) it should minimize unintended consequences. "But we have to establish a formal, mathematically precise mechanism to measure complexity and adaptability . . . [where] adaptability means the system elements have sufficient margin, and can serve multiple purposes." "We need to break the paradigm of long cycles from design to product" some interesting questions....
  • ...1 more comment...
  • LeopoldS on 02 Nov 10
     
    indeed ... already hotly debated in CDF ... any suggestions in addition to what we already contributed to this (e.g. system level optimisation)
  • Joris _ on 03 Nov 10
     
    what is the outcome of the CDF study ? I think actually that optimisation is not at all the key point. As it is stressed in this news, it is robustness (points 2 and 4). This is something we should think about ...
  • Luzi Bergamin on 03 Nov 10
     
    SYSTEM OF SYSTEMS, SYSTEM OF SYSTEMS!!! :-D
pacome delva

Can Google Predict the Stock Market? - ScienceNOW - 2 views

news.sciencemag.org/...-google-predict-the-stock.html

stock_market google

shared by pacome delva on 15 Nov 10 - No Cached
  • Luís F. Simões on 15 Nov 10
     
    in related news: Twitter Mood Predicts The Stock Market "An analysis of almost 10 million tweets from 2008 shows how they can be used to predict stock market movements up to 6 days in advance" http://www.technologyreview.com/blog/arxiv/25900/ http://arxiv.org/abs/1010.3003
  • ...1 more comment...
  • LeopoldS on 16 Nov 10
     
    not overly impressive: "The Google data could not predict the weekly fluctuations in stock prices. However, the team found a strong correlation between Internet searches for a company's name and its trade volume, the total number of times the stock changed hands over a given week."
  • Francesco Biscani on 16 Nov 10
     
    Likewise, I can predict the statistical properties of white noise :-)
  • nikolas smyrlakis on 18 Nov 10
     
    the problem is that usually the google search queries and the twitter updates happen after a crisis for example. I dont really think that people all over the world suddenly realised that Lehman would collapse and started googling it like crazy before it collapsed. More likely they did it afterwards.
duncan barker

Apollo 15' Titanium Tank NASA Space Program Astronaut - eBay (item 290487095168 end tim... - 1 views

cgi.ebay.com/...290487095168

shared by duncan barker on 03 Nov 10 - No Cached
  • duncan barker on 03 Nov 10
     
    Here you can buy the actual titanium fuel tank from the Apollo 18 mission ........... on ebay   :)
  • Ma Ru on 04 Nov 10
     
    Hmmm... could one fill it up, say, with beer?
santecarloni

[1011.6263] Electrostatic accelerometer with bias rejection for Gravitation and Solar S... - 6 views

arxiv.org/1011.6263

PHY gravity

shared by santecarloni on 30 Nov 10 - No Cached
  • santecarloni on 30 Nov 10
     
    Is it really true?
  • pacome delva on 02 Dec 10
     
    Article 1011.6263 doesn't exist
  • pacome delva on 03 Dec 10
     
    ha it's back! Yes they are talking about GAP since some time in France, and lobbying to put it on a planetary mission.
santecarloni

X Particle Explains Dark Matter and Antimatter at the Same Time | Wired Science | Wired... - 1 views

www.wired.com/...x-particle

particle dark matter phy

shared by santecarloni on 09 Dec 10 - No Cached
  • santecarloni on 09 Dec 10
     
    Interesting... however to me it looks like they have only shifted the problem... instead of looking for WIMPS now we look for X and Y and Phi...
LeopoldS

Why Can't PCs Work More Like iPhones? - Bits Blog - NYTimes.com - 1 views

bits.blogs.nytimes.com/...ant-pcs-work-more-like-iphones

computing

shared by LeopoldS on 27 Feb 10 - Cached
  • LeopoldS on 27 Feb 10
     
    bye bye Francesco to your beloved command line ....
  • Francesco Biscani on 27 Feb 10
     
    I would love to see people working on touchscreens all day, orthopedics would have a field day :) Anyway, the answer to the original question is: because the JesusPhone is an appliance, a PC is not.
  • Luzi Bergamin on 01 Mar 10
     
    Luckily there is open source, so neither Steve Jobs nor NY Times decide for us what sort of OS we have to like! I'll join the "Jihad for the command line" troop!!
Nicholas Lan

Energy Efficient Hardware Investigated - 2 views

www.bit-tech.net/...1

technology

shared by Nicholas Lan on 26 Feb 10 - Cached
  • Nicholas Lan on 26 Feb 10
     
    sorry, geek central. in case anyone is interested in some new energy efficient pc components. they do energy use/time measurements under load. Unfortunately they don't seem to take idle consumption into account
pacome delva

981.pdf (Objet application/pdf) - 6 views

www.seo.nl/...981.pdf

shared by pacome delva on 14 Dec 09 - No Cached
  • pacome delva on 14 Dec 09
     
    Where do you want to go to do academic research and still have a decent salary ? certainly not sweden, France or Germany... prefer the UK, US or the top... Switzerland !
  • ...2 more comments...
  • Luzi Bergamin on 14 Dec 09
     
    Where do you want to go to do academic research and still have fun? Where can you really do research instead of becoming an overpaid secretary? If you want to get rich go and work in investment banking...
  • pacome delva on 14 Dec 09
     
    well.. i'd better live decently than get rich... which is not possible in Paris (take 1680 euros for one family and a 1000 euros rent, minus all normal expenses (health, car, insurance, ...), it's difficult to finish the month...) Without mentioning that in France you would become an underpaid secretary...!!! My ex phd director is a professor and she doesn't even have a secretary to manage the 150 applications to the master she is in charge... My experience would rather say that the salary and the time you have for research are quite decorrelated.
  • Luzi Bergamin on 14 Dec 09
     
    Sure, 44k for a full professor, that's a bad joke! Just my experience from conferences: high saleries do not make good research, I rather suspect there's something like an optimal salery. People with too high saleries often seem to feel obliged to make much noise (whatever the reason might be), the result is not research but PR campagns.
  • pacome delva on 14 Dec 09
     
    I agree ! Just a correction, net salary for a full professor starting in France: 36456 euros/year... For a McF (equivalent junior prof.): 20160 euros/year, and of course a shitload of admistrative tasks and teaching. I don't know why i still dream to have a position...?
pacome delva

Special relativity passes key test - 2 views

physicsworld.com/...40834

phy quantum_gravity special_relativity gamma_ray_burst

shared by pacome delva on 15 Dec 09 - Cached
  • Granot and colleagues studied the radiation from a gamma-ray burst – associated with a highly energetic explosion in a distant galaxy – that was spotted by NASA's Fermi Gamma-ray Space Telescope on 10 May this year. They analysed the radiation at different wavelengths to see whether there were any signs that photons with different energies arrived at Fermi's detectors at different times.
  • According to Granot, these results "strongly disfavour" quantum-gravity theories in which the speed of light varies linearly with photon energy, which might include some variations of string theory or loop quantum gravity. "I would not use the term 'rule out'," he says, "as most models do not have exact predictions for the energy scale associated with this violation of Lorentz invariance. However, our observational requirement that such an energy scale would be well above the Planck energy makes such models unnatural."
  • Dario Izzo on 16 Dec 09
     
    essentially they made an experiment that does not prove or disprove anything -big deal-... what is the scientific value of "strongly disfavour"??? I also like the sentence "most models do not have exact predictions for the energy scale associated with this violation of Lorentz invariance" ... but if this is true WHAT IS THE POINT OF THE EXPERIMENT!!!! God, physics is in trouble ....
  • pacome delva on 17 Dec 09
     
    hum, null result experiments are not useless !!! there is always the hope of finding "something wrong", which would lead to a great discovery. For the state of theoretical physics (the "no exact predictions" quote), i totally agree that physics is in trouble... That's what happen when physicists don't care anymore about experiments...! All you can do now is drawing "nice"graph with upper bounds on some parameters of an all tunable weird theory !
pacome delva

Power Law Explains Insurgent Violence - 1 views

sciencenow.sciencemag.org/...1

war power_law

shared by pacome delva on 18 Dec 09 - Cached
  • To try to explain the mechanism behind these patterns, the team borrowed a simple computer model from economics. The model treated all insurgencies like a marketplace--groups of people constantly deciding whether to act. Rather than coordinating, the groups simply watch the news. The size of the carnage reported at any given time determines the probability that a group of a given size will strike next. Like clockwork, the attacks over the course of the conflict--from the smallest to the most deadly--have the same distribution.
nikolas smyrlakis

Text messages net over $400,000 for Haitian relief in first day after quake | La Plaza ... - 0 views

latimesblogs.latimes.com/...400000-for-haitian-relief.html

text messages haiti wyclef jean

shared by nikolas smyrlakis on 14 Jan 10 - Cached
  • nikolas smyrlakis on 14 Jan 10
     
    Superstar musician Wyclef Jean, a native of Haiti, has helped raise over $400,000 for his native country, thanks to text-message donations.
Joris _

Why Computers Can't Mimic The Brain - Forbes.com - 3 views

www.forbes.com/...ology-breakthroughs-brain.html

BIO brain

shared by Joris _ on 06 Dec 09 - No Cached
  • engineers seem to have a diminished ability to understand biology
  • Remember them the next time you read a story claiming some brain-like accomplishment of a computer. The only really human thing these programs are doing is attracting attention to themselves
Christos Ampatzis

Evidence of life on Mars lurks beneath surface of meteorite, Nasa experts claim - Times... - 1 views

www.timesonline.co.uk/...article6934078.ece

shared by Christos Ampatzis on 27 Nov 09 - Cached
  • Christos Ampatzis on 27 Nov 09
     
    Is there life on Mars? - We should try to compress those images!
  • Francesco Biscani on 29 Nov 09
     
    "Is there life on Mars?" Yes, mostly on Saturday night...
Nina Nadine Ridder

Top 10 Surprising Results of Global Warming | LiveScience - 5 views

www.livescience.com/..._global_warming_results-1.html

climate_change satellite_orbit drag atmosphere

shared by Nina Nadine Ridder on 07 Dec 09 - Cached
LeopoldS liked it
  • Nina Nadine Ridder on 07 Dec 09
     
    #4 is pretty interesting 
  • ...1 more comment...
  • LeopoldS on 08 Dec 09
     
    first time I hear about this!!! Is there any peer reviewed paper reference to this? should impact missions like GOCE!!
  • Nina Nadine Ridder on 08 Dec 09
     
    There are (even in Science): http://science-mag.aaas.org/cgi/reprint/314/5803/1253.pdf There is also a group at UCAR (lead by S. Solomon, one of the Gods in atmospheric research) who are analyzing this effect: http://www.ucar.edu/news/releases/2006/thermosphere.shtml
  • Joris _ on 08 Dec 09
     
    for the drag effect, this is well known in fluid mechanics, we use the Knudsen number, which explains this phenomenon ... for a perfect gaz though!
pacome delva

Quantum computer takes on quantum chemistry - physicsworld.com - 1 views

physicsworld.com/...41432

phy quantum_computation

shared by pacome delva on 21 Jan 10 - Cached
  • The process is done 20 times to create a 20-bit binary number that represents the energy of the hydrogen molecule to a precision of about one part per million.
  • Aspuru-Guzik described the two-qubit calculation as a "baby step forward," and added that a 128-qubit system would be needed to work out the energy levels of a simple molecule such as water.
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