Skip to main content

Home/ Advanced Concepts Team/ Group items tagged anti

Rss Feed Group items tagged

Filter: All | Bookmarks | Topics Simple Middle
2More

Biomimicr-E: Nature-Inspired Energy Systems | AAAS - 4 views

www.aaaspolicyfellowships.org/...nature-inspired-energy-systems energy science phy space
shared by Tom Gheysens on 13 Jan 14 - No Cached
  • Tom Gheysens on 13 Jan 14
     
    some biomimicry used in energy systems... maybe it sparks some ideas
  • LeopoldS on 27 Jan 14
     
    not much new that has not been shared here before ... BUT: we have done relativley little on any of them. for good reasons?? don't know - maybe time to look into some of these again more closely Energy Efficiency( Termite mounds inspired regulated airflow for temperature control of large structures, preventing wasteful air conditioning and saving 10% energy.[1] Whale fins shapes informed the design of new-age wind turbine blades, with bumps/tubercles reducing drag by 30% and boosting power by 20%.[2][3][4] Stingray motion has motivated studies on this type of low-effort flapping glide, which takes advantage of the leading edge vortex, for new-age underwater robots and submarines.[5][6] Studies of microstructures found on shark skin that decrease drag and prevent accumulation of algae, barnacles, and mussels attached to their body have led to "anti-biofouling" technologies meant to address the 15% of marine vessel fuel use due to drag.[7][8][9][10] Energy Generation( Passive heliotropism exhibited by sunflowers has inspired research on a liquid crystalline elastomer and carbon nanotube system that improves the efficiency of solar panels by 10%, without using GPS and active repositioning panels to track the sun.[11][12][13] Mimicking the fluid dynamics principles utilized by schools of fish could help to optimize the arrangement of individual wind turbines in wind farms.[14] The nanoscale anti-reflection structures found on certain butterfly wings has led to a model to effectively harness solar energy.[15][16][17] Energy Storage( Inspired by the sunlight-to-energy conversion in plants, researchers are utilizing a protein in spinach to create a sort of photovoltaic cell that generates hydrogen from water (i.e. hydrogen fuel cell).[18][19] Utilizing a property of genetically-engineered viruses, specifically their ability to recognize and bind to certain materials (carbon nanotubes in this case), researchers have developed virus-based "scaffolds" that
2More

Chatbot Wears Down Proponents of Anti-Science Nonsense - 6 views

www.technologyreview.com/...25964 climate_change chatbot twitter
shared by Luís F. Simões on 11 Nov 10 - No Cached
LeopoldS liked it
  • Nigel Leck, a software developer by day, was tired of arguing with anti-science crackpots on Twitter. So, like any good programmer, he wrote a script to do it for him.
  • LeopoldS on 12 Nov 10
     
    fantastic!
1More

Nanoparticles play at being red blood cells - physicsworld.com - 1 views

physicsworld.com/...46344 mimetics bio nan
shared by santecarloni on 01 Jul 11 - No Cached
LeopoldS liked it
  • santecarloni on 01 Jul 11
     
    Nanoparticles disguised as red blood cells could be used to deliver anti-cancer drugs directly to a tumour.
1More

Through a glass, darkly: Chinese, American, and Russian anti-satellite testing in space - 2 views

www.thespacereview.com/...1 technology space
shared by johannessimon81 on 26 Mar 14 - No Cached
  • johannessimon81 on 26 Mar 14
     
    Article mainly on anti-satellite testing by the Chinese and on US and Russian tests (2nd page) - quite extensive and technical but interesting
2More

New type of matter discovered..? - 3 views

www.wired.com/...four-quark-particle science particlePhysics
shared by johannessimon81 on 17 Jun 13 - No Cached
  • johannessimon81 on 17 Jun 13
     
    Scientists may have discovered a 4-quark particle...
  • Thijs Versloot on 17 Jun 13
     
    A combination of two quark-antiquark pairs could be possible, maybe strongly interacting if they are all of similar types (charm and anti-charm in this case) or it may be via gluon exchange by the strong force.. Intriguing...
1More

Flashback Trojan Hits 550,000 Macs - 1 views

www.pcmag.com/...0,2817,2402641,00.asp INF
shared by Joris _ on 05 Apr 12 - No Cached
  • Joris _ on 05 Apr 12
     
    Analysis of a recent Java flaw exploited by the Flashback Trojan reveals that more than 550,000 Macs were affected in the U.S. and abroad, according to anti-virus vendor Doctor Web. "This once again refutes claims by some experts that there are no cyber-threats to Mac OS X," Doctor Web said in a Tuesday blog post. lol :)
1More

Stimulated mutual annihilation: How to make a gamma-ray laser with positronium - 1 views

www.sciencedaily.com/...140501165654.htm laser antimatter
shared by Thijs Versloot on 02 May 14 - No Cached
  • Thijs Versloot on 02 May 14
     
    Theorists expect that positronium, a sort of 'atom' consisting of an electron and an anti-electron, can be used to make a powerful gamma-ray laser. Scientists now report detailed calculations of the dynamics of a positronium BEC. This work is the first to account for effects of collisions between different positronium species.
1More

Collage: Defeating Censorship with User-Generated Content - 1 views

gtnoise.net/...ip-with-user-generated-content technology
shared by Nicholas Lan on 01 Sep 10 - Cached
  • Nicholas Lan on 01 Sep 10
     
    software for encrypting/decrypting hidden messages in social media
1More

Upping the Anti: CERN Physicists Trap Antimatter Atoms for the First Time: Scientific A... - 0 views

www.scientificamerican.com/article.cfm science phy
shared by andreiaries on 22 Nov 10 - No Cached
  • andreiaries on 22 Nov 10
     
    Not really the first time, but they seem to be much closer to be being able to study them. Apparently, they had 38 atoms trapped for miliseconds. Now it's time to prove it behaves just like matter.
2More

Power scattering and absorption mediated by cloak/anti-cloak interactions: A transforma... - 1 views

arxiv.org/1001.3000 phy nan metamaterials
shared by Luzi Bergamin on 20 Jan 10 - Cached
LeopoldS liked it
  • Luzi Bergamin on 20 Jan 10
     
    To keep you updated in the field of metamaterials. "Invisible sensors" are a hot topic at the moment. Of course, mainly due to military applications. Might be interesting to sense something while minimizing the perturbations due to the sensor.
  • Dario Izzo on 20 Jan 10
     
    And all seems to be allowed by transformation optics ..... mah
1More

cost-utility analysis of abolishing the law of gravity - 3 views

www.ncbi.nlm.nih.gov/...20071204s00038p1536.pdf anti-gravity
shared by Giusi Schiavone on 19 Jan 11 - No Cached
  • Giusi Schiavone on 19 Jan 11
     
    Crazy and funny
2More

Antigravity Machine Patent Draws Physicists' Ire - 2 views

news.nationalgeographic.com/...1111_051111_junk_patent.html anti-gravity
shared by Giusi Schiavone on 19 Jan 11 - Cached
  • Giusi Schiavone on 19 Jan 11
     
    Antigravity Machine Patent
  • Luzi Bergamin on 19 Jan 11
     
    Do they aim for the Ig Nobel prize?? Just great!!
7More

Seminar: You and Your Research, Dr. Richard W. Hamming (March 7, 1986) - 10 views

www.chris-lott.org/...kaiser.html science research Methods methodology Nobel Bell Labs Los Alamos
shared by Luís F. Simões on 07 Jan 11 - Cached
LeopoldS liked it
  • This talk centered on Hamming's observations and research on the question "Why do so few scientists make significant contributions and so many are forgotten in the long run?" From his more than forty years of experience, thirty of which were at Bell Laboratories, he has made a number of direct observations, asked very pointed questions of scientists about what, how, and why they did things, studied the lives of great scientists and great contributions, and has done introspection and studied theories of creativity. The talk is about what he has learned in terms of the properties of the individual scientists, their abilities, traits, working habits, attitudes, and philosophy.
  • Luís F. Simões on 07 Jan 11
     
    Here's the link related to one of the lunch time discussions. I recommend it to every single one of you. I promise it will be worth your time. If you're lazy, you have a summary here (good stuff also in the references, have a look at them):      Erren TC, Cullen P, Erren M, Bourne PE (2007) Ten Simple Rules for Doing Your Best Research, According to Hamming. PLoS Comput Biol 3(10): e213.
  • ...3 more comments...
  • pacome delva on 11 Jan 11
     
    I'm also pretty sure that the ones who are remembered are not the ones who tried to be... so why all these rules !? I think it's bullshit...
  • Luís F. Simões on 11 Jan 11
     
    The seminar is not a manual on how to achieve fame, but rather an analysis on how others were able to perform very significant work. The two things are in some cases related, but the seminar's focus is on the second.
  • pacome delva on 12 Jan 11
     
    Then read a good book on the life of Copernic, it's the anti-manual of Hamming... he breaks all the rules !
  • LeopoldS on 12 Jan 11
     
    honestly I think that some of these rules actually make sense indeed ... but I am always curious to get a good book recommendation (which book of Copernic would you recommend?) btw Pacome: we are in Paris ... in case you have some time ...
  • pacome delva on 12 Jan 11
     
    I warmly recommend this book, a bit old but fascinating: The sleepwalkers from Arthur Koestler. It shows that progress in science is not straight and do not obey any rule... It is not as rational as most of people seem to believe today. http://www.amazon.com/Sleepwalkers-History-Changing-Universe-Compass/dp/0140192468/ref=sr_1_1?ie=UTF8&qid=1294835558&sr=8-1 Otherwise yes I have some time ! my phone number: 0699428926 We live around Denfert-Rochereau and Montparnasse. We could go for a beer this evening ?
2More

Cloaking magnetic fields: First antimagnet developed - 2 views

www.sciencedaily.com/...110922192056.htm superconductor metamaterial hybrid anti magnet
shared by dejanpetkow on 07 Oct 11 - No Cached
  • dejanpetkow on 07 Oct 11
     
    Sante, this thing is made of a superconductor-metamaterial hybrid. Should be non-linear enough for you :)
  • Luzi Bergamin on 08 Oct 11
     
    The device consists of a layer of superconducter, complemented by several layers of metamaterial. And the authors are afraid of potential abuse of this cloak to smuggle forbidden objets on airplanes etc. Hillarious! Another example how good research makes itself completely ridiculous by means of absurd claims about their potential usage.
9More

Global Innovation Commons - 4 views

www.globalinnovationcommons.org innovation open IP
shared by LeopoldS on 31 Oct 09 - Cached
LeopoldS liked it
  • LeopoldS on 31 Oct 09
     
    nice initiative!
  • ...6 more comments...
  • Ma Ru on 31 Oct 09
     
    Any viral licence is a bad license...
  • Francesco Biscani on 31 Oct 09
     
    I'm pretty confident I'm about to open a can of worms, but mind explaining why? :)
  • LeopoldS on 01 Nov 09
     
    I am less worried about the can of worms ... actually eager to open it ... so why????
  • Francesco Biscani on 01 Nov 09
     
    Well, the topic GPL vs other open-source licenses (e.g., BSD, MIT, etc.) is old as the internet and it has provided material for long and glorious flame wars. The executive summary is that the GPL license (the one used by Linux) is a license which imposes some restrictions on the way you are allowed to (re)use the code. Specifically, if you re-use or modify GPL code and re-distribute it, you are required to make it available again under the GPL license. It is called "viral" because once you use a bit of GPL code, you are required to make the whole application GPL - so in this sense GPL code replicates like a virus. On the other side of the spectrum, there are the so-called BSD-like licenses which have more relaxed requirements. Usually, the only obligation they impose is to acknowledge somewhere (e.g., in a README file) that you have used some BSD code and who wrote it (this is called "attribution clause"), but they do not require to re-distribute the whole application under the same license. GPL critics usually claim that the license is not really "free" because it does not allow you to do whatever you want with the code without restrictions. GPL proponents claim that the requirements imposed by the GPL are necessary to safeguard the freedom of the code, in order to avoid being able to re-use GPL code without giving anything back to the community (which the BSD license allow: early versions of Microsoft Windows, for instance, had the networking code basically copy-pasted from BSD-licensed versions of Unix). In my opinion (and this point is often brought up in the debates) the division pro/against GPL mirrors somehow the division between anti/pro anarchism. Anarchists claim that the only way to be really free is the absence of laws, while non-anarchist maintain that the only practical way to be free is to have laws (which by definition limit certain freedoms). So you can see how the topic can quickly become inflammatory :) GPL at the current time is used by aro
  • Francesco Biscani on 01 Nov 09
     
    whoa, the comment got cut off. Anyway, I was just saying that at the present time the GPL license is used by around 65% of open source projects, including the Linux kernel, KDE, Samba, GCC, all the GNU utils, etc. The topic is much deeper than this brief summary, so if you are interested in it, Leopold, we can discuss it at length in another place.
  • LeopoldS on 01 Nov 09
     
    Thanks for the record long comment - am sure that this is longest ever made to an ACT diigo post! On the topic, I would rather lean for the GPL license (which I also advocated for the Marek viewer programme we put on source forge btw), mainly because I don't trust that open source is by nature delivering a better product and thus will prevail but I still would like to succeed, which I am not sure it would if there were mainly BSD like licenses around. ... but clearly, this is an outsider talking :-)
  • LeopoldS on 01 Nov 09
     
    btw: did not know the anarchist penchant of Marek :-)
  • Ma Ru on 01 Nov 09
     
    Well, not going into the discussion about GPL/BSD, the viral license in this particular case in my view simply undermines the "clean and clear" motivations of the initiative authors - why should *they* be credited for using something they have no rights for? And I don't like viral licences because they prevent using things released under this licence to all those people who want to release their stuff under a different licence, thus limiting the usefulness of the stuff released on that licence :) BSD is not a perfect license too, it also had major flaws And I'm not an anarchist, lol
2More

Artificially-intelligent Robot Scientist 'Eve' could boost search for new drugs - 4 views

www.cam.ac.uk/...uld-boost-search-for-new-drugs technology AI medicine
shared by Thijs Versloot on 04 Feb 15 - No Cached
Paul N liked it
  • Thijs Versloot on 04 Feb 15
     
    Eve, an artificially-intelligent 'robot scientist' could make drug discovery faster and much cheaper, say researchers writing in the Royal Society journal Interface. The team has demonstrated the success of the approach as Eve discovered that a compound shown to have anti-cancer properties might also be used in the fight against malaria.
  • Ma Ru on 14 Feb 15
     
    Unfortunately, "make drug discovery faster and much cheaper" actually means "increase profit margin for pharmaceutical companies"...
1 - 18 of 18
Showing 20▼ items per page