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Nina Nadine Ridder

Surprising similarity in fly and mouse motion vision - 2 views

medicalxpress.com/...arity-mouse-motion-vision.html

BIO science evolution biomimetics vision

shared by Nina Nadine Ridder on 30 Jul 15 - No Cached
  • Nina Nadine Ridder on 30 Jul 15
     
    Loosely related to an old ACT project on optical flow (if I remember correctly but even if not still an interesting read I think): "At first glance, the eyes of mammals and those of insects do not seem to have much in common. However, a comparison of the neural circuits for detecting motion shows surprising parallels between flies and mice. Scientists have learned a lot about the visual perception of both animals in recent years."
Nina Nadine Ridder

Wild Cape York and glittering reef - 1 views

www.abc.net.au/...4253295.htm

Earth_observation climate_change corals marine_biology

shared by Nina Nadine Ridder on 02 Sep 15 - No Cached
  • Nina Nadine Ridder on 02 Sep 15
     
    Really interesting bit hidden in the last paragraph: Monitoring coral bleaching from space with Envisat penetrating down to a depth of 10 m "[...] Envisat's Medium Resolution Imaging Spectrometer sensor can detect coral bleaching down to depths of ten metres, meaning Envisat could potentially map coral bleaching on a global scale."
  • Ma Ru on 15 Sep 15
     
    No, it can't :-) Since 8 April 2012 Envisat is a proud holder of the title of one of the biggest pieces of space junk out there in LEO...
  • Nina Nadine Ridder on 17 Sep 15
     
    admittedly correct, so the past tense would have been a more appropriate choice... Nevertheless, plenty of data to look back at and Sentinel-3 will launch eventually! ;)
Joris _

JAXA releases pictures of dust found in Hayabusa space probe sample capsule - The Maini... - 1 views

mdn.mainichi.jp/...20100706p2a00m0na012000c.html

asteroid jaxa hayabusa

shared by Joris _ on 07 Jul 10 - Cached
  • The capsule was not empty, and it means a lot.
  • 10 particles of about 1 millimeter in size
  • The detected particles will be compared with terrestrial materials
Tobias Seidl

Wombats detected from space - 4 views

dx.doi.org/...0034-4257(80)90046-2

BIO AIR remote sensing

shared by Tobias Seidl on 03 Aug 10 - No Cached
  • Tobias Seidl on 03 Aug 10
     
    Demonstrates how useful space technology can be.
  • ...4 more comments...
  • Ma Ru on 03 Aug 10
     
    Also, this reminds me of a poem that once sprung out on my Linux console login: The wombat lives across the seas, Among the far Antipodes. He may exist on nuts and berries, Or then again, on missionaries; His distant habitat precludes Conclusive knowledge of his moods, But I would not engage the wombat In any form of mortal combat.
  • LeopoldS on 04 Aug 10
     
    sprung out of your console????? my mac never talks like this to me ....
  • Ma Ru on 05 Aug 10
     
    See? Even console can be user-friendly ;-) If I remember well, it was Slackware linux and at every console start-up the fortune program was launched : http://linux.die.net/man/6/fortune
  • LeopoldS on 07 Aug 10
     
    so you are still not convinced about macs being superior after working for a year with martin?
  • Ma Ru on 07 Aug 10
     
    Apparently not - I just got a brand new sexy Sony Vaio S :-)
  • LeopoldS on 09 Aug 10
     
    I am sorry for you ... :-)
Tobias Seidl

ScienceDirect - Remote Sensing of Environment : Wombats detected from space - 1 views

www.sciencedirect.com/science

BIO AIR satelite

shared by Tobias Seidl on 03 Aug 10 - No Cached
  • Tobias Seidl on 03 Aug 10
     
    How useful space technology can be for real scientific problems.
Luís F. Simões

Timelapse video of asteroid discoveries in our solar system from 1980-2010 (watch in 10... - 5 views

www.youtube.com/watch

asteroid detection solar system WISE

shared by Luís F. Simões on 13 Sep 10 - No Cached
Joris _ liked it
  • Ma Ru on 14 Sep 10
     
    Nice... Now I have a lame question: after you have discovered ~500k asteroids, all moving (I assume more or less) chaotically in that asteroid belt, how do you tell one from another?
  • ...1 more comment...
  • Joris _ on 14 Sep 10
     
    hmm, not very chaotic indeed - laws of Kepler plus some perturbations.
  • Ma Ru on 15 Sep 10
     
    That's what I thought but when presented as a green "goo" in the video, it appears rather unordered... so I guess this is just an impression evoked by a not-to-scale presentation?
  • Francesco Biscani on 19 Sep 10
     
    It depends... orbits can be chaotic if the orbital period is in a resonance with Jupiter, although such orbits are not stable. Such configurations tend to get disrupted pretty quickly (in cosmic terms :P) http://en.wikipedia.org/wiki/Kirkwood_gap
Christos Ampatzis

Rates of Scientific Fraud Retractions - 6 views

blogs.nature.com/...rates-of-scientific-fraud

shared by Christos Ampatzis on 19 Nov 10 - No Cached
  • Christos Ampatzis on 19 Nov 10
     
    Good to see "The Netherlands" not in the top list... Btw Fraud detection becoming hot potato in EU funding...
  • LeopoldS on 20 Nov 10
     
    not surprising since usually EC staff has no clue what people do with their funds once the are allocated ... as long as there is a report and a website :-)
Dario Izzo

If you're going to do good science, release the computer code too!!! - 3 views

www.guardian.co.uk/...ce-climate-emails-code-release

open science

shared by Dario Izzo on 09 Feb 10 - Cached
pacome delva liked it
  • Les Hatton, an international expert in software testing resident in the Universities of Kent and Kingston, carried out an extensive analysis of several million lines of scientific code. He showed that the software had an unacceptably high level of detectable inconsistencies.
  • pacome delva on 09 Feb 10
     
    haha. this guy won't have any new friends with this article! I kind of agree but making your code public doesn't mean you are doing good science...and inversely! He takes experimental physics as a counter example but even there, some teams keep their little secrets on the details of the experiment to have a bit of advance on other labs. Research is competitive in its current state, and I think only collaborations can overcome this fact.
  • ...1 more comment...
  • Juxi Leitner on 10 Feb 10
     
    well sure competitiveness is good but to verify (and that should be the case for scientific experiments) the code should be public, it would be nice to have something like bibtex for code libraries or versions used.... :) btw I fully agree that the code should go public, I had lots of trouble reproducing (reprogramming) some papers in the past ... grr
  • Francesco Biscani on 10 Feb 10
     
    My view is that the only proper way to do scientific communication is full transparency: methodologies, tests, codes, etc. Everything else should be unacceptable. This should hold both for publicly funded science (for which there is the additional moral requirement to give back to the public domain what was produced with taxpayers' money) and privately-funded science (where the need to turn a profit should be of lesser importance than the proper application of the scientifc method).
  • Dario Izzo on 08 Nov 10
     
    Same battle we are fighting since a few years....
Ma Ru

Detecting gravitational waves by timing pulsars - 1 views

www.newscientist.com/...ks-relativitys-final-test.html

phy pulsars gravitational waves science

shared by Ma Ru on 18 Mar 10 - Cached
  • Ma Ru on 18 Mar 10
     
    Undoubtedly something for Pacome...
LeopoldS

Experimental Detection of Trinitramide, N(NO2)3 - Rahm - 2010 - Angewandte Chemie Inter... - 0 views

onlinelibrary.wiley.com/...abstract

PHY PRO propulsion space NRG

shared by LeopoldS on 09 Jan 11 - No Cached
  • LeopoldS on 09 Jan 11
     
    Dejan have a look at this ...
  • dejanpetkow on 10 Jan 11
     
    Would be nice to have some cross sections or transition probabilities for the possible transition (or decomposition) channels. But anyway, HEDM is one of the key short/mid-term topics in advanced energy, power, and/or propulsion.
Luís F. Simões

The Fantastical Promise of Reversible Computing  - Technology Review - 2 views

www.technologyreview.com/...26308

INF reversible logic computing chip electronics quantum cellular_automata

shared by Luís F. Simões on 25 Jan 11 - No Cached
  • Reversible logic could cut the energy wasted by computers to zero. But significant challenges lie ahead.
  • By some estimates the difference between the amount of energy required to carry out a computation and the amount that today's computers actually use, is some eight orders of magnitude. Clearly, there is room for improvement.
  • There are one or two caveats, of course. The first is that nobody has succeeded in building a properly reversible logic gate so this work is entirely theoretical. But there are a number of computing schemes that have the potential to work like this. Thapliyal and Ranganathan point in particular to the emerging technology of quantum cellular automata and show how their approach might be applied.
  • ...1 more annotation...
  • Ref: arxiv.org/abs/1101.4222: Reversible Logic Based Concurrent Error Detection Methodology For Emerging Nanocircuits
  • Dario Izzo on 26 Jan 11
     
    We did look at making computation powers more efficient from the bio perspective (efficiency of computations in brain). This paper was actually the base for our discussion on a new approsach to computing http://atlas.estec.esa.int/ACTwiki/images/6/68/Sarpeshkar.pdf and led to several ACT internal studies
  • Luís F. Simões on 26 Jan 11
     
    here is the paper I told you about, on the computational power of analog computing: http://dx.doi.org/10.1016/0304-3975(95)00248-0 you can also get it here: http://www.santafe.edu/media/workingpapers/95-09-079.pdf
LeopoldS

Unbound or distant planetary mass population detected by gravitational microlensing : N... - 1 views

www.nature.com/...nature10092.html

space phy NRG

shared by LeopoldS on 18 May 11 - No Cached
  • LeopoldS on 18 May 11
     
    dark matter :-) ?? could there be loads of them?
santecarloni

[1105.0158] Detecting emergent processes in cellular automata with excess information - 2 views

arxiv.org/1105.0158

nan AI technology

shared by santecarloni on 10 May 11 - No Cached
  • santecarloni on 10 May 11
     
    maybe this is useful...
santecarloni

[1106.1470] Evidence for Time-Varying Nuclear Decay Rates: Experimental Results and The... - 2 views

arxiv.org/1106.1470

phy technology

shared by santecarloni on 13 Jun 11 - No Cached
LeopoldS liked it
  • santecarloni on 13 Jun 11
     
    Unexplained annual variations in nuclear decay rates have been reported in recent years by a number of groups. We show that data from these experiments exhibit not only variations in time related to Earth-Sun distance, but also periodicities attributable to solar rotation. Additionally, anomalous decay rates coincident in time with a series of solar flares in December 2006 also point to a solar influence on nuclear decay rates....
  • LeopoldS on 13 Jun 11
     
    can we use space to make a smart experiment to solve this riddle? e.g. sending a decay detecter on a close solar orbit and one to Pluto and then compare decay rates? or a highly elliptical trajectory and compare during peri and apoapsis?
  • santecarloni on 13 Jun 11
     
    I think it could be possible. I need to look into the details. In fact it could probably be done already with the nuclear generators on the Voyager and Pioneer and other nuclear powered probes. That is if the data are precise enough...
Luís F. Simões

When Astronomy Met Computer Science | Cosmology | DISCOVER Magazine - 1 views

discovermagazine.com/...astronomy-met-computer-science

astronomy INF data mining

shared by Luís F. Simões on 25 Jul 11 - No Cached
LeopoldS liked it
  • “That’s impossible!” he told Borne. “Don’t you realize that the entire data set NASA has collected over the past 45 years is one terabyte?”
  • The LSST, producing 30 terabytes of data nightly, will become the centerpiece of what some experts have dubbed the age of peta­scale astronomy—that’s 1015 bits (what Borne jokingly calls “a tonabytes”).
  • A major sky survey might detect millions or even billions of objects, and for each object we might measure thousands of attributes in a thousand dimensions. You can get a data-mining package off the shelf, but if you want to deal with a billion data vectors in a thousand dimensions, you’re out of luck even if you own the world’s biggest supercomputer. The challenge is to develop a new scientific methodology for the 21st century.”
  • LeopoldS on 25 Jul 11
     
    Francesco please look at this and get back wrt to the /. question .... thanks
pacome delva

Researchers Use Radio Waves to "See" Through Walls -- Berardelli 2009 (1015): 2 -- Scie... - 0 views

sciencenow.sciencemag.org/...2

technology radio tracking

shared by pacome delva on 19 Oct 09 - Cached
  • Researchers have discovered that an array of radio transceivers--devices that send and receive signals--can track people's movements behind walls. Possible uses include detecting people trapped in burning buildings, controlling lighting or heating and cooling systems as people enter or exit rooms, and spotting burglars or enemy soldiers.
ESA ACT

Interesting review about generation, detection, and applications of the Terahertz-waves - 0 views

www.iop.org/...R01

spectroscopy imaging technology

shared by ESA ACT on 24 Apr 09 - Cached
  • ESA ACT on 24 Apr 09
     
    An overview is given on the field of the terahertz-frequency electromagnetic waves, their properties and emerging applications. Some widespread sources with their advantages and drawbacks are presented; an emphasis is placed on the parametric generation s
ESA ACT

PlagiarismDetect.com | Free Online Plagiarism Detection System - 0 views

www.plagiarismdetect.com/index.php

writing paper ariadna report text editing

shared by ESA ACT on 24 Apr 09 - Cached
  • ESA ACT on 24 Apr 09
     
    If you get suspicious text you can have an automated check. However, I suggest to remove any references chapter since they boost the amount of hits. My last Ariadna report has a plagiarism rate of 8.7%. Anyone higher?
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