Skip to main content

Home/ Advanced Concepts Team/ Group items tagged paper

Rss Feed Group items tagged

Filter: All | Bookmarks | Topics Simple Middle
dawaderksen

New Invention Generates Electricity "Out of Thin Air" - Offers Clean Energy 24/7 - 1 views

scitechdaily.com/n-air-offers-clean-energy-24-7

technology science bio

shared by dawaderksen on 19 Feb 20 - No Cached
  • dawaderksen on 19 Feb 20
     
    Is this for real ?
  • darioizzo2 on 19 Feb 20
     
    Very interesting, indeed! I wonder if it even can be beefed up. The devices produce a sustained voltage of around 0.5 volts across a 7-micrometre-thick film, with a current density of around 17 microamperes per square centimetre
  • Marcus Maertens on 19 Feb 20
     
    You were a bit faster than me! On top is the corresponding paper.
anonymous

Physicists extend quantum machine learning to infinite dimensions - 1 views

phys.org/...chine-infinite-dimensions.html

shared by anonymous on 06 Mar 17 - No Cached
anonymous

Scientists discover how to 'upload knowledge to your brain' - 1 views

www.telegraph.co.uk/...wnload-knowledge-to-your-brain

neuroscience technology human brain

shared by anonymous on 10 Mar 17 - No Cached
jcunha liked it
Dario Izzo

Space4Life - Lab2Moon - 3 views

lab2moon.teamindus.in/space4life

BIO MOON

shared by Dario Izzo on 17 Mar 17 - No Cached
  • Dario Izzo on 17 Mar 17
     
    Cyano bacteria to shield from radiation. An idea from italians flying to the Moon via Team Indus
  • Athanasia Nikolaou on 17 Mar 17
     
    Nice idea, but is it really new: resistance of cyanob. to UV radiation has been known but studies have been inconclusive as to under what resource limitations it works, but according to what we see from evolution: on Earth it works, since they survived pre-ozone atmosphere! some papers from a quick google search: 1999 http://www.tandfonline.com/doi/pdf/10.1080/09670269910001736392 2014 https://www.ncbi.nlm.nih.gov/pubmed/25463663
Athanasia Nikolaou

Neural networks meet gravitational lens calculations - 1 views

www.symmetrymagazine.org/...neural-networks-meet-space

shared by Athanasia Nikolaou on 31 Aug 17 - No Cached
Luzi Bergamin

[1107.0167] Nonlinear transformation optics and engineering of the Kerr effect - 9 views

arxiv.org/1107.0167

PHY nan optics metamaterials

shared by Luzi Bergamin on 04 Jul 11 - No Cached
LeopoldS liked it
  • Luzi Bergamin on 04 Jul 11
     
    The best paper on transformation optics written ever :-)
  • ...2 more comments...
  • jmlloren on 05 Jul 11
     
    Finally something worth to read in the MM field!. The idea is excellent, congratullations. However, I think there is a typo or mistake in the definition of l=3x10-13 m, the "waist" of the laser beam. Seems clear that 0.3 pm is too small for being a waist of any laser beam.
  • Luzi Bergamin on 05 Jul 11
     
    Thanks for your commendation. Of course, the problem with nonlinear transformation optics is the same as with linear: it's very easy to come up with theoretical descriptions of devices that have the most absurd properties, but it will be extremely hard to fabricate them. But if you have any good suggestion, please shoot! About the laser beam: Pekka made the simulations, since I am not a "Comsolist", but still I think the numbers are correct. You are right that we should not call this a laser beam. Our problem was the following: we need to have a very simple model that can be simulated exactly (full Maxwell equations) but naturally exhibits self focusing. The Gaussian beam was the simplest solution. Since our model is purely classical and moreover we do not take into account diffraction effects, the parameter "l" is of minor importance. Taking "l" much larger gives almost the same picture but requires much more computer power to simulate. I guess that's why Pekka chose an unnaturally small number.
  • jmlloren on 05 Jul 11
     
    Concerning the fabrication... as usual, no idea. I agree that this is the main drawback of MM, and certainly difficult to overcome. I would double check that number, because its value is related with the beam shape of Fig. 1 A. I believe that the simulations are correct, it's just a detail.
  • LeopoldS on 06 Jul 11
     
    wow ... still publishing despite babysitting and new job!!
darioizzo2

Trust your gut: A new study shows second-guessers make worse decisions - The Washington... - 3 views

www.washingtonpost.com/...ke-worse-decisions-study-finds

shared by darioizzo2 on 13 Jan 20 - No Cached
LeopoldS liked it
  • darioizzo2 on 13 Jan 20
     
    :) always thought so!
  • ...1 more comment...
  • Athanasia Nikolaou on 13 Jan 20
     
    I always found it likely, but only on second thought.
  • LeopoldS on 15 Jan 20
  • LeopoldS on 15 Jan 20
     
    Actually read the paper now and think that this is very doubtful that this could be generalised. They used predictions for football games by those betting on outcomes ...
Athanasia Nikolaou

Measuring the predictability of life outcomes with a scientific mass collaboration | PNAS - 3 views

www.pnas.org/8398

ML social predictability

shared by Athanasia Nikolaou on 21 Apr 20 - No Cached
LeopoldS and darioizzo2 liked it
  • Athanasia Nikolaou on 21 Apr 20
     
    This is a social sciences paper trying to make use of ML. Quote from text: "Social scientists studying the life course must find a way to reconcile a widespread belief that understanding has been generated by these data-as demonstrated by more than 750 published journal articles using the Fragile Families data (10)-with the fact that the very same data could not yield accurate predictions of these important outcomes." "(...) In other words, the submissions were much better at predicting each other than at predicting the truth."
  • darioizzo2 on 21 Apr 20
     
    an important message to learn from
darioizzo2

Water On The Moon: NASA Confirms Water Molecules On Our Neighbor's Sunny Surface : NPR - 0 views

www.npr.org/...on-our-neighbors-sunny-surface

water moon nasa

shared by darioizzo2 on 27 Oct 20 - No Cached
  • darioizzo2 on 27 Oct 20
     
    NASA has confirmed the presence of water on the moon's sunlit surface, a breakthrough that suggests the chemical compound that is vital to life on Earth could be distributed across more parts of the lunar surface than the ice that has previously been found in dark and cold areas.
  • darioizzo2 on 27 Oct 20
     
    Here is one of the associated papers that appeared in Nature: https://www.nature.com/articles/s41550-020-1198-9
jcunha

'Disruptive' science has declined - 2 views

www.nature.com/...d41586-022-04577-5

disruptive science technology

shared by jcunha on 07 Jan 23 - No Cached
  • jcunha on 07 Jan 23
     
    About "Papers and patents are becoming less disruptive over time" https://www.nature.com/articles/s41586-022-05543-x. "Overall, our results deepen understanding of the evolution of knowledge and may guide career planning and science policy. To promote disruptive science and technology, scholars may be encouraged to read widely and given time to keep up with the rapidly expanding knowledge frontier. Universities may forgo the focus on quantity, and more strongly reward research quality56, and perhaps more fully subsidize year-long sabbaticals. Federal agencies may invest in the riskier and longer-term individual awards that support careers and not simply specific projects57, giving scholars the gift of time needed to step outside the fray, inoculate themselves from the publish or perish culture, and produce truly consequential work. Understanding the decline in disruptive science and technology more fully permits a much-needed rethinking of strategies for organizing the production of science and technology in the future."
« First ‹ Previous 361 - 370 of 370
Showing 20▼ items per page