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johannessimon81

Aerospace Industry Trends & Events - 1 views

www.globalspec.com/...ViewIssue

technology engineering specs space

shared by johannessimon81 on 15 Jun 14 - No Cached
  • johannessimon81 on 15 Jun 14
     
    Hey guys, I thought I would forward you a link to a newsletter on Aerospace Tech. It is mainly on the engineering level - but after all that was an area where a lot of people in the team felt they missed expertise. So here you go! ;-) The newsletter is a mix of stories on new trends and of advertisement of high-tech parts by aerospace suppliers. IHS Global Spec also has similar newsletters on other research fields (e.g. piezoelectrics). Hope this is useful for some people.
Thijs Versloot

Neural network-based forecasting for renewable energy transmission - 1 views

phys.org/news329122125.html

shared by Thijs Versloot on 05 Sep 14 - No Cached
Paul N liked it
  • Thijs Versloot on 05 Sep 14
     
    Darn... Another field taken by NN.. paul?
  • Paul N on 08 Sep 14
     
    Liked for veridicity! :) In the end, for science, having models would be nice in order to promote understanding. But for practical applications? Neaaah
johannessimon81

Practical Electrostatic Motor(?) - 3 views

www.youtube.com/watch

PHY science NRG Electrostatic Motor

shared by johannessimon81 on 14 Sep 14 - No Cached
LeopoldS liked it
  • johannessimon81 on 14 Sep 14
     
    Apparently a spin-off company of the University of Wisconsin is developing non-magnetic motors. Maybe this could be useful for reaction wheels etc. on satellites that monitor the Earth's magnetic field... (preventing magnetic interference with sensors)
  • LeopoldS on 20 Sep 14
     
    Duncan, this is one for you! - you can probably even build one in your kitchen ...
jcunha

Maze-solving automatons can repair broken circuits - 1 views

scitation.aip.org/...1.4916513

technology PHY space

shared by jcunha on 09 Apr 15 - No Cached
  • jcunha on 09 Apr 15
     
    Researchers in Bangalore, India together with the Indian Space Research organization come up with an intelligent self-healing algorithm that can locate open-circuits faults and repair them in real-time. They used an insulating silicon oil containing conductive particles. Whenever a fault happens, an electric field develops there, causing the fluid to move in a 'thermodynamic automaton' way repairing the fault. The researchers make clear it could be one advantage for electronics in harsh environments, such as in space satellites.
Thijs Versloot

3D Printable Graphene Composite - 1 views

www.nature.com/srep11181

technology energy storage graphene 3d

shared by Thijs Versloot on 21 Jul 15 - No Cached
LeopoldS liked it
  • Thijs Versloot on 21 Jul 15
     
    Both graphene and 3d printing has been around for quite a while, but combined they could provide unique properties of materials, eg in the use of high performance 3d batteries. This paper gives a nice overview of what has been done in the field up to now.
Thijs Versloot

Student Confirms That There Are Enormous Tubes Of Plasma Floating Above The Earth - 1 views

www.iflscience.com/...plasmasphere-series-tubes

science PHY space plasma

shared by Thijs Versloot on 03 Jun 15 - No Cached
jcunha liked it
  • Thijs Versloot on 03 Jun 15
     
    A 60-year-old theory about the structure of the magnetic fields that surround Earth has been confirmed directly for the first time. The lead author of the paper is an undergraduate student who invented a way to view the Earth's magnetosphere in three dimensions.
pacome delva

Flights of fancy - 1 views

physics.aps.org/...PhysRevLett.104.220502

phy bio birds magnetic_field

shared by pacome delva on 08 Jun 10 - Cached
  • Could quantum entanglement help a flock of birds fly south for the winter? A team of scientists at the Akademie der Wissenschaften and the Universität Innsbruck, both in Austria, is looking at how concepts central to the field of quantum information—entanglement and coherence—play a role in the chemistry of magnetodetection that animals use for navigation.
duncan barker

Challenging Existence of 'Absolute Time' - 3 views

www.21stcenturysciencetech.com/...time.html

phy

shared by duncan barker on 12 Aug 10 - Cached
  • Luzi Bergamin on 12 Aug 10
     
    I doubt that Shnoll is really the first one making such experiments, but perhaps they are more complete than any others done before. Similar things are very popular in the context of Psychology and more exotic fields. If I remember correctly someone ran long experiments with random number generators... Mostly the stories died after a short time, since the experiments are not reproducable. Anyway, why do these guys always have to claim that their work is somehow fundamentally changing our view of physics, notoriously referring to Einstein-Bohr debates and this stuff. That's nonsense! If these effects exist the first explanation is always much simpler. There is somewhere something that influences physics on Earth in a defined way. But this influence depends on the relative position or whatever of the Earth to that whatever-it-is. No problem with absolute time and all that sh...
  • LeopoldS on 12 Aug 10
     
    Two years ago, nearly unnoticed in the West, the Russian biophysicist S.E. Shnoll published a paper in the prominent Russian physics journal Uspekhi Fisicheskikh Nauk ..... ah then ...
  • Luzi Bergamin on 12 Aug 10
     
    You are right, Leo, they are mostly Russians that publish in some unspellable Journals nobody knows.... or then they are supported by Templeton Foundation.
Luzi Bergamin

International Congress of Mathematicians 2010, Hyderabad » Prize Winners 2010 - 0 views

www.icm2010.in/prize-winners-2010

mathematics PHY

shared by Luzi Bergamin on 25 Aug 10 - Cached
  • Luzi Bergamin on 25 Aug 10
     
    This years winners of the fields medal. Some about mathematical physics but NOT string theory. Hey, I didn't even know that this still exists... :-)
Luís F. Simões

Inferring individual rules from collective behavior - 2 views

dx.doi.org/...pnas.1001763107

bio swarm biomimicry self-organization

shared by Luís F. Simões on 05 Sep 10 - No Cached
  • Luís F. Simões on 05 Sep 10
     
    "We fit data to zonal interaction models and characterize which individual interaction forces suffice to explain observed spatial patterns." You can get the paper from the first author's website: http://people.stfx.ca/rlukeman/research.htm
  • Christos Ampatzis on 06 Sep 10
     
    PNAS? Didnt strike me as sth very new though... We should refer to it in the roots study though: "Social organisms form striking aggregation patterns, displaying cohesion, polarization, and collective intelligence. Determining how they do so in nature is challenging; a plethora of simulation studies displaying life-like swarm behavior lack rigorous comparison with actual data because collecting field data of sufficient quality has been a bottleneck." For roots it is NO bottleneck :) Tobias was right :)
  • Luís F. Simões on 06 Sep 10
     
    Here they assume all relevant variables influencing behaviour are being observed. Namely, the relative positions and orientations of all ducks in the swarm. So, they make movies of the swarm's movements, process them, and them fit the models to that data. In the roots, though we can observe the complete final structure, or even obtain time-lapse movies showing how that structure came out to be, getting the measurements of all relevant soil variables (nitrogen, phosphorus, ...) throughout the soil, and over time, would be extremely difficult. So I guess a replication of the kind of work they did, but for the roots, would be hard. Nice reference though.
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 -- Railway to the Sky? NASA Ponders New Launch System - 3 views

www.space.com/...ew-nasa-technology-100914.html

space technology future

shared by Joris _ on 16 Sep 10 - No Cached
  • A team of engineers from NASA's Kennedy Space Center in Florida and some of the agency's other field centers are looking into this and other novel launch systems based on cutting-edge technologies.
  • The launch system would require some advancements of existing technologies, but it wouldn't need any brand-new technologies to work
  • Scramjet vehicles could be used as a basis for a commercial launch program
  • ...1 more annotation...
  • It's not very often you get to work on a major technology revolution
  • Juxi Leitner on 16 Sep 10
     
    I wonder if they are also working with that SCRAMSPACE initiative in Australia that was presented at ESTEC a while back...
  • Giusi Schiavone on 19 Sep 10
     
    what about a space elevator!!! quiet old concept (1895), see this link on wiki http://en.wikipedia.org/wiki/Space_elevator
Joris _

American Institute of Aeronautics and Astronautics - Space and the Biological Economy - 0 views

www.aiaa.org/content.cfm

BIO MAD space science

shared by Joris _ on 11 Oct 10 - No Cached
  • the U.S. space program has a robust life science program that is diligently working to innovate new approaches, research and technologies in the fields of biotechnology and bio-nanotechnology science, which are providing new solutions for old problems – including food security, medical needs and energy needs
  • more money be allocated to develop environmentally sound and energy efficient engine programs for commercial and private aviation
  • waste water program
  • ...3 more annotations...
  • we lack fundamental knowledge about the entire effect of the photosynthesis system on food growth, and that space-based research could provide vital clues to scientists on how to streamline the process to spur more efficient food growth
  • From the start of the space age until 2010 only around 500 people have journeyed into space, but with the advent of private space travel in the next 24 months another 500 people are expected to go into space
  • Wagner indentified prize systems that award monetary prizes to companies or individuals as an effective way to spur innovation and creativity, and urged the Congressional staffers present to consider creating more prize systems to stimulate needed innovation
  • Joris _ on 11 Oct 10
     
    a bunch of ideas, iinitiatives, and good points about upcoming changes in space ...
pacome delva

Neutron Star Formation Could Awaken the Vacuum | Physical Review Focus - 0 views

focus.aps.org/st14

phy quantum_field_theory general_relativity

shared by pacome delva on 05 Nov 10 - No Cached
  • Lima and Vanzella joined with George Matsas of São Paulo State University in their latest work to examine a model of the highly-curved spacetime that appears during formation of an ultradense neutron star. For some reasonable values of the mass and size of the star, they predict that the vacuum energy will grow within milliseconds for some values of the coupling parameter. At this point the vacuum energy would begin to induce additional gravitational effects, which they haven't yet calculated, so they don't know how the star would be affected. If further research shows such a neutron star to be unstable, the existence of stable neutron stars of particular sizes could rule out the existence fields of the type they modeled.
pacome delva

Information converted to energy - physicsworld.com - 4 views

physicsworld.com/...44385

phy information maxwell_demon

shared by pacome delva on 22 Nov 10 - No Cached
  • By tracking the particle's motion using a video camera and then using image-analysis software to identify when the particle had rotated against the field, the researchers were able to raise the metaphorical barrier behind it by inverting the field's phase. In this way they could gradually raise the potential of the particle even though they had not imparted any energy to it directly.
  • "Nobody thinks of using bits to boil water," he says, "but that would in principle be possible at nanometre scales." And he speculates that molecular processes occurring in nature might already be converting information to energy in some way. "The message is that processes taking place on the nanoscale are completely different from those we are familiar with, and that information is part of that picture."
  • pacome delva on 22 Nov 10
     
    crazy, the Maxwell's demon at work !
  • Nicholas Lan on 23 Nov 10
     
    crazy indeed
Ma Ru

Yet another issue to take into account when you want to travel at c - 1 views

www.newscientist.com/...lls-especially-warp-speed.html

PHY interstellar travel human spaceflight speed of light

shared by Ma Ru on 19 Feb 10 - Cached
  • Ma Ru on 19 Feb 10
     
    While my attitude to articles about interstellar travel is generally sceptical, this one seems to raise quite an interesting point... Physicists?
  • ...1 more comment...
  • pacome delva on 19 Feb 10
     
    mmm, I think that if we manage to travel at 99.999998 per cent the speed of light, we'll have the technology to deviate these atoms ! one way could be a super strong magnetic field, or a super laser that would act as an ice breaker with the radiation pressure (the good thing is that light always travel at the speed of light, even if you are at 99.999998 per cent the speed of light)
  • Francesco Biscani on 19 Feb 10
     
    Also, remember never to dereference null pointers.
  • Ma Ru on 19 Feb 10
     
    True, it's almost like installing accelerometers upside down...
Juxi Leitner

Technology Review: Blogs: arXiv blog: Physicist Discovers How to Teleport Energy - 4 views

www.technologyreview.com/...24759

tech phy quantum entanglement nrg

shared by Juxi Leitner on 09 Feb 10 - Cached
pacome delva liked it
  • He gives the example of a string of entangled ions oscillating back and forth in an electric field trap, a bit like Newton's balls. Measuring the state of the first ion injects energy into the system in the form of a phonon, a quantum of oscillation. Hotta says that performing the right kind of measurement on the last ion extracts this energy. Since this can be done at the speed of light (in principle), the phonon doesn't travel across the intermediate ions so there is no heating of these ions. The energy has been transmitted without traveling across the intervening space.
  • Juxi Leitner on 09 Feb 10
     
    wonder if we can use that to power a moon base .... or on-board a SBSP satellite
  • ...1 more comment...
  • LeopoldS on 09 Feb 10
     
    will still have to read the actual article but am a bit sceptic if this interpretation really will hold ... what are our fundamental physicists saying about this?
  • Juxi Leitner on 10 Feb 10
     
    I am not the physicist but I thought it might be interesting, from a space security point-of-view
  • pacome delva on 11 Feb 10
     
    Yes it seems really interesting and opens new possibilities. However this technology review article is not very good and the guy uses terms which have a precise meaning (like teleportation), which is different from the word we know... Quantum teleportation is what we use for designing quantum computers, but we are quite far from any practical applications. This energy teleportation will allow new scheme involving energy (if it is experimentally confirmed) which is very nice. However it seems this occurs in an entangled many-body system, which the only macroscopic one I know is a bose-eintein condensate (BEC). So it would mean infuse energy in the BEC by doing a measurement on one of the atom and extract it few millimeters away by doing a measurement on another atom. very far from any long distance power transmission...
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!!
Luzi Bergamin

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
pacome delva

Algae Show a Knack for Quantum Mechanics -- Berardelli 2010 (203): 3 -- ScienceNOW - 1 views

sciencenow.sciencemag.org/...3

phy bio quantum_physics photosynthesis

shared by pacome delva on 04 Feb 10 - Cached
  • the discovery will open up a new field of research, and it could lead to a new generation of superefficient light-sensitive devices.
  • the experiments showed that the electron vibrations resulting from the photons striking the antennas persisted at full strength four times longer than expected. The reason, the researchers report this week in Nature, is that quantum mechanics controls the energy. "It was an utter surprise," says physical chemist and co-author Gregory Scholes of the University of Toronto in Canada. For the results to have occurred, he explains, a property called quantum coherence must have been operating.
  • the research "will open an entirely new area of biophysics." And that effort should have "huge implications," he says, "not only for how we think about biophysics, but also light harvesting and light-sensitive devices."
  • pacome delva on 04 Feb 10
     
    Very interesting work, showing that apparently algae mastered quantum coherence a few years before us... Inspiring for a new type of light-sensitive devices, and perhaps other applications...
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