Computer Science / Engineering posts
- June 17, 2013
- 08:21 AM
- 15 views
To Grow, Plants Do the Mathematics
by Andrew Porterfield in United Academics
You see them in sunflowers and artichokes. The familiar, concentric spiral-shaped Fibonacci sequence is part of a lot of flowering plants. These patterns precisely follow the Fibonacci sequence (1, 1, 2, 3, 5, 8), in which each digit (once you move along) is the sum of the previous two. But until now, nobody really knew how plants knew to make these mathematically precise patterns.... Read more »
Pennybacker, M., & Newell, A. (2013) Phyllotaxis, Pushed Pattern-Forming Fronts, and Optimal Packing. Physical Review Letters, 110(24). DOI: 10.1103/PhysRevLett.110.248104
- June 13, 2013
- 03:59 PM
- 72 views
Putting the Social back... and forth
by Aurametrix team in Health Technologies
In the year 2006 'google' was officially declared a verb in Oxford Dictionary and Merriam Webster. But startups have not given up on building search engines. That same year Facebook opened its doors to users over the age of 13, preparing for exponential growth spurt. The list of startups working on yet another social network and lining up to present their sites at Silicon Valley New Tech Meetup kept growing too. And so were the crowds attending the meetups - as everybody wanted to see the next ........ Read more »
Cantor M, & Whitehead H. (2013) The interplay between social networks and culture: theoretically and among whales and dolphins. Philosophical transactions of the Royal Society of London. Series B, Biological sciences, 368(1618), 20120340. PMID: 23569288
- June 12, 2013
- 10:32 AM
- 37 views
Recent Advances in Battery Technology Review
by dailyfusion in The Daily Fusion
During the last several months a number of new battery technologies has been proposed by different research institutions. Scientists are focusing their attention on finding ways to make batteries store more energy and recharge faster, while at the same time reducing environmental risks posed by the chemicals that are used in batteries.... Read more »
MOON, J., MUNAKATA, H., KAJIHARA, K., & KANAMURA, K. (2013) Hydrothermal Synthesis of Manganese Dioxide Nanoparticles as Cathode Material for Rechargeable Batteries. Electrochemistry, 81(1), 2-6. DOI: 10.5796/electrochemistry.81.2
Zhou, G., Wang, D., Li, F., Hou, P., Yin, L., Liu, C., Lu, G., Gentle, I., & Cheng, H. (2012) A flexible nanostructured sulphur–carbon nanotube cathode with high rate performance for Li-S batteries. Energy , 5(10), 8901. DOI: 10.1039/c2ee22294a
Kravchyk, K., Protesescu, L., Bodnarchuk, M., Krumeich, F., Yarema, M., Walter, M., Guntlin, C., & Kovalenko, M. (2013) Monodisperse and Inorganically Capped Sn and Sn/SnO2 Nanocrystals for High-Performance Li-Ion Battery Anodes Nanocrystals for High-Performance Li-Ion Battery Anodes . Journal of the American Chemical Society, 135(11), 4199-4202. DOI: 10.1021/ja312604r
Augustyn, V., Come, J., Lowe, M., Kim, J., Taberna, P., Tolbert, S., Abruña, H., Simon, P., & Dunn, B. (2013) High-rate electrochemical energy storage through Li intercalation pseudocapacitance. Nature Materials. DOI: 10.1038/nmat3601
- June 11, 2013
- 09:25 AM
- 33 views
New Photovoltaic Cell Doubles as Solar Energy Storage System
by dailyfusion in The Daily Fusion
A UW-Madison electrical engineer has proposed a design for dye-sensitized solar cells that can at the same time generate power and work as a solar energy storage system.... Read more »
Zhang, X., Huang, X., Li, C., & Jiang, H. (2013) Dye-Sensitized Solar Cell with Energy Storage Function through PVDF/ZnO Nanocomposite Counter Electrode. Advanced Materials. DOI: 10.1002/adma.201301088
- June 10, 2013
- 05:29 PM
- 35 views
Are you in pain?
by Know Your Images in Know Your Images
Pain is one of the most difficult things to quantify. The doctor can ask you: How would you classify the pain from 0 to 10, being 10 the most painful and 0 not painful? and you might answer with a number, but the scale is subjective. So far, there was no method to actually quantify pain. fMRI (functional MRI) might change that.A recent study found a way to predict the pain intensity with fMRI. Basically, several volunteers (I'm not sure how much did this study paid, but I don't see myself ........ Read more »
Wager TD, Atlas LY, Lindquist MA, Roy M, Woo CW, & Kross E. (2013) An fMRI-based neurologic signature of physical pain. The New England journal of medicine, 368(15), 1388-97. PMID: 23574118
- June 9, 2013
- 09:30 PM
- 55 views
Toward an algorithmic theory of biology
by Artem Kaznatcheev in Evolutionary Games Group
When you typically think of computer scientists working on questions in biology, you probably picture a bioinformatician. Although bionformatics makes heavy use of algorithms and machine learning, and its practitioners are often mildly familiar with computational complexity (enough to know that almost everything they study is NP-complete), it doesn’t really apply computational thinking to understand […]... Read more »
Pais, D., & Leonard, N. (2013) Adaptive network dynamics and evolution of leadership in collective migration. Physica D: Nonlinear Phenomena. DOI: 10.1016/j.physd.2013.04.014
- June 8, 2013
- 03:21 PM
- 36 views
How does a painting look like on X-ray?
by Know Your Images in Know Your Images
The impulse to develop medical imaging comes mainly from two sources: understanding/diagnosing diseases and understanding our body. However, medical imaging technology is sometimes used to study different objects. This post is dedicated to the imaging of one type of these objects: paintings.... Read more »
Schreiner, M., Frühmann, B., Jembrih-Simbürger, D., & Linke, R. (2012) X-rays in art and archaeology: An overview. Powder Diffraction, 19(01), 3-11. DOI: 10.1154/1.1649963
- June 7, 2013
- 04:42 AM
- 43 views
Video: Helicopter Flies by Thought Control
by Andrew Porterfield in United Academics
This video shows a demonstration flight of a new helicopter. But the helicopter isn’t new; the way it’s controlled is. The entire flight was managed by the thoughts of a man wearing a cap with electrodes. The researchers think that if a helicopter can be piloted by detachable electrodes, then these electrodes could be used to make non-invasive limbs for the disabled.... Read more »
Lafleur K, Cassady K, Doud A, Shades K, Rogin E, & He B. (2013) Quadcopter control in three-dimensional space using a noninvasive motor imagery-based brain-computer interface. Journal of neural engineering, 10(4), 46003. PMID: 23735712
- June 7, 2013
- 12:35 AM
- 29 views
Dental Imaging - What is happening there?
by Knowyourimages in Know Your Images
The first time I was started thinking about dental imaging from a different point of view was when I heard in a talk the speaker saying: "These are statistics about medical imaging, without dental imaging.". I wondered "Why are dental imaging statistics not included?"... Read more »
Vandenberghe B, Jacobs R, & Bosmans H. (2010) Modern dental imaging: a review of the current technology and clinical applications in dental practice. European radiology, 20(11), 2637-55. PMID: 20544352
- June 5, 2013
- 08:30 PM
- 47 views
Machine learning and prediction without understanding
by Artem Kaznatcheev in Evolutionary Games Group
Big data is the buzzword du jour, permuting from machine learning to hadoop powered distributed computing, from giant scientific projects to individual social science studies, and from careful statistics to the witchcraft of web-analytics. As we are overcome by petabytes of data and as more of it becomes public, it is tempting for a would-be […]... Read more »
Chattopadhyay, Ishanu, Wen, Yicheng, & Ray, Asok. (2010) Pattern Classification In Symbolic Streams via Semantic Annihilation of Information. American Control Conference. arXiv: 1008.3667v1
- June 5, 2013
- 01:06 PM
- 36 views
Using Existing Data to Assess Tidal Power Potential
by dailyfusion in The Daily Fusion
In a new thesis on marine current power at Uppsala University, Emilia Lalander shows that currently available water data are valuable for estimating the movement speed of water and thereby the potential energy resource available in a particular area.... Read more »
Lalander, E., Grabbe, M., & Leijon, M. (2013) On the velocity distribution for hydro-kinetic energy conversion from tidal currents and rivers. Journal of Renewable and Sustainable Energy, 5(2), 23115. DOI: 10.1063/1.4795398
- June 5, 2013
- 10:25 AM
- 39 views
Better IQ Testing for Animals: There's an App for That
by Elizabeth Preston in Inkfish
It's 2013, and laboratory pigeons are demanding an upgrade. Well, maybe they aren't demanding so much as continuing to do whatever tasks get them their pigeon pellets. Nevertheless, switching from analog to digital testing could mean more rigorous studies, better statistics, and a chance for previously ignored animals to try their paws at cognition research.
One of the classic cognitive tests that psychologists like to give animals involves two or more strings. At the far end of one string, ........ Read more »
Wasserman, E., Nagasaka, Y., Castro, L., & Brzykcy, S. (2013) Pigeons learn virtual patterned-string problems in a computerized touch screen environment. Animal Cognition. DOI: 10.1007/s10071-013-0608-0
- June 5, 2013
- 07:22 AM
- 52 views
Mind over mechanics
by Perikis Livas in Tracing Knowledge
It’s a staple of science fiction: people who can control objects with their minds.
At the University of Minnesota, a new technology is turning that fiction into reality.
In the lab of biomedical engineering professor Bin He, several young people have learned to use their thoughts to steer a flying robot around a gym, making it turn, rise, dip, and even sail through a ring.
The technology, pioneered by He, may someday allow people robbed of speech and mobility by neurodegenerative ........ Read more »
University of Minnesota. (2013) Mind over mechanics. UM News. info:/
- June 4, 2013
- 11:35 AM
- 47 views
New Graphene Applications in Energy Review
by dailyfusion in The Daily Fusion
Like diamond or graphite, graphene is a structural modification (an allotrope) of carbon, that has many special properties that make it a very useful material with great potential for application in technology. In essence, graphene is an isolated atomic plane of graphite, which is very light (1-square-meter sheet weighing only 0.77 milligrams) and at the same time very strong (graphene has a breaking strength over 100 times greater than a hypothetical steel film of the same thickness). The elect........ Read more »
Chen, R., Das, S., Jeong, C., Khan, M., Janes, D., & Alam, M. (2013) Co-Percolating Graphene-Wrapped Silver Nanowire Network for High Performance, Highly Stable, Transparent Conducting Electrodes. Advanced Functional Materials. DOI: 10.1002/adfm.201300124
Connolly, M., Chiu, K., Giblin, S., Kataoka, M., Fletcher, J., Chua, C., Griffiths, J., Jones, G., Fal'ko, V., Smith, C.... (2013) Gigahertz quantized charge pumping in graphene quantum dots. Nature Nanotechnology. DOI: 10.1038/nnano.2013.73
Britnell, L., Ribeiro, R., Eckmann, A., Jalil, R., Belle, B., Mishchenko, A., Kim, Y., Gorbachev, R., Georgiou, T., Morozov, S.... (2013) Strong Light-Matter Interactions in Heterostructures of Atomically Thin Films. Science. DOI: 10.1126/science.1235547
- June 4, 2013
- 08:56 AM
- 60 views
Are You Racist? Maybe Change Your Avatar
by Michael Kasumovic in United Academics
A new study in Consciousness and Cognition demonstrates technology may be able to offer part of the solution: donning the skin of a dark-skinned avatar significantly decreased an individual’s racial biases.... Read more »
Peck, T., Seinfeld, S., Aglioti, S., & Slater, M. (2013) Putting yourself in the skin of a black avatar reduces implicit racial bias. Consciousness and Cognition, 22(3), 779-787. DOI: 10.1016/j.concog.2013.04.016
- June 2, 2013
- 08:58 AM
- 57 views
Procrastination to find the most cited paper in the field of MRI
by Know Your Images in Know Your Images
I have posted recently about the most cited (important?) papers in Medical Imaging in the last ten/five/two years here. Today I look for the most cited papers in the field of MRI. Interesting to note that these 3 papers were published in Neuroimage.Most cited paper in Radiology, Nuclear Science and Medical Imaging Field about MRI:- of the last 10 years with 1346 citations:Ashburner, J., & Friston, K. (2005). Unified segmentation NeuroImage, 26 (3), 839-851 DOI: 10.1016/j.neuroimage........ Read more »
Ashburner, J., & Friston, K. (2005) Unified segmentation. NeuroImage, 26(3), 839-851. DOI: 10.1016/j.neuroimage.2005.02.018
Klein, A., Andersson, J., Ardekani, B., Ashburner, J., Avants, B., Chiang, M., Christensen, G., Collins, D., Gee, J., Hellier, P.... (2009) Evaluation of 14 nonlinear deformation algorithms applied to human brain MRI registration. NeuroImage, 46(3), 786-802. DOI: 10.1016/j.neuroimage.2008.12.037
Smith, S., Miller, K., Salimi-Khorshidi, G., Webster, M., Beckmann, C., Nichols, T., Ramsey, J., & Woolrich, M. (2011) Network modelling methods for FMRI. NeuroImage, 54(2), 875-891. DOI: 10.1016/j.neuroimage.2010.08.063
- May 31, 2013
- 06:01 PM
- 62 views
Electron Microscopy Imaging Solves LED Efficiency Mystery
by dailyfusion in The Daily Fusion
Ending a long-time controversy concerning the reason behind indium gallium nitride semiconductor efficiency, MIT and Brookhaven Lab scientists have concluded that it definitely has nothing to do with indium-rich clusters.... Read more »
Baloch, K., Johnston-Peck, A., Kisslinger, K., Stach, E., & Gradečak, S. (2013) Revisiting the “In-clustering” question in InGaN through the use of aberration-corrected electron microscopy below the knock-on threshold. Applied Physics Letters, 102(19), 191910. DOI: 10.1063/1.4807122
- May 30, 2013
- 10:11 AM
- 55 views
Atom-trapping laser gratings : A technological quantum leap for space
by Perikis Livas in Tracing Knowledge
New micro-fabricated grating chips developed through ESA-led research enable the laser-based cooling and capture of atoms on a more compact basis than ever before, potentially delivering laboratory-standard performance for precision environmental sensing and timekeeping from devices portable enough to be flown into space.... Read more »
ESA Space Engineering. (2013) Atom-trapping laser gratings : A technological quantum leap for space. ESA. info:/
- May 29, 2013
- 11:30 PM
- 45 views
Microscopic computing in cells and with self-assembling DNA tiles
by Artem Kaznatcheev in Evolutionary Games Group
One of the three goals of natural algorithms is to implement computers in non-electronic media. In cases like quantum computing, the goal is to achieve a qualitatively different form of computing, but other times (as with most biological computing) the goal is just to recreate normal computation (or a subset of it) at a different […]... Read more »
Cardelli L, & Csikász-Nagy A. (2012) The cell cycle switch computes approximate majority. Scientific Reports, 656. PMID: 22977731
- May 29, 2013
- 12:41 PM
- 50 views
New Catalysts Will Get Cellphones Running on Acid
by dailyfusion in The Daily Fusion
Physicist Florian Nitze at the Umeå University, Sweden, has developed several new catalysts that improve the capacity of the fuel cells, making it possible to use relatively environmentally friendly formic acid in fuel cell powering your mobile phone or laptop.... Read more »
Nitze, F., Mazurkiewicz, M., Malolepszy, A., Mikolajczuk, A., Kędzierzawski, P., Tai, C., Hu, G., Kurzydłowski, K., Stobinski, L., Borodzinski, A.... (2012) Synthesis of palladium nanoparticles decorated helical carbon nanofiber as highly active anodic catalyst for direct formic acid fuel cells. Electrochimica Acta, 323-328. DOI: 10.1016/j.electacta.2011.12.104
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