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Computer Science / Engineering posts

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  • June 5, 2013
  • 08:30 PM
  • 1,452 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
  • 731 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 »

  • June 5, 2013
  • 10:25 AM
  • 983 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 »

  • June 5, 2013
  • 07:22 AM
  • 694 views

Mind over mechanics

by Perikis Livas in Chilon

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
  • 1,158 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 »

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
  • 586 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 »

  • June 2, 2013
  • 08:58 AM
  • 605 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
  • 932 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 »

  • May 30, 2013
  • 10:11 AM
  • 817 views

Atom-trapping laser gratings : A technological quantum leap for space

by Perikis Livas in Chilon

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
  • 966 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
  • 681 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 »

  • May 29, 2013
  • 08:13 AM
  • 773 views

Angelina Jolie doesn't trust medical imaging

by Know Your Images in Know Your Images

Angelina Jolie shocked us all with her decision to remove both her breasts in order to prevent breast cancer. Her breast cancer risk was calculated based on genetics and was 87%. Now it is 5%. I have to agree that this woman is brave! However, I think a very intense screening could have been done with very good results. There are several methods to detect breast cancer: (digital) mammography, tomosynthesis, breast MRI, ultrasound, positron emission tomography and even microwave imaging. Some wit........ Read more »

  • May 28, 2013
  • 04:31 PM
  • 551 views

Shape-shifting Nanoparticles Flip from Sphere to Net in Response to Tumor Signal

by Perikis Livas in Chilon

Scientists at the University of California, San Diego, have designed tiny spherical particles to float easily through the bloodstream after injection, then assemble into a durable scaffold within diseased tissue. An enzyme produced by a specific type of tumor can trigger the transformation of the spheres into netlike structures that accumulate at the site of a cancer, the team reports in the journal Advanced Materials this week.... Read more »

Susan Brown. (2013) Shape-shifting Nanoparticles Flip from Sphere to Net in Response to Tumor Signal. UC San Diego News Center. info:/

  • May 27, 2013
  • 04:55 PM
  • 964 views

Transparent Graphene Electrode Makes Flexible Solar Cells Possible

by dailyfusion in The Daily Fusion

In a recent article published in journal Advanced Functional Materials, researchers describe a new graphene-coated transparent electrode made of silver nanowires. Because of its ability to bend without breaking, the new invention can be used to create flexible solar cells, computer and consumer electronics displays and future “optoelectronic” circuits for sensors and information processing.... Read more »

  • May 26, 2013
  • 11:30 PM
  • 779 views

Distributed computation in foraging desert ants

by Artem Kaznatcheev in Evolutionary Games Group

For computer scientists, ants are most familiar from ant colony optimization. These algorithms rely on simulating how ants lay, follow, and modify pheromone trails to find efficient paths from their hives to food sources. Hence, it might come as a surprise that this is not a universal feature of ants. The cataglyphis niger desert ant […]... Read more »

  • May 24, 2013
  • 11:30 PM
  • 1,146 views

Computer science on prediction and the edge of chaos

by Artem Kaznatcheev in Evolutionary Games Group

With the development of statistical mechanics, physicists became the first agent-based modellers. Since the scientists of the 19th century didn’t have super-computers, they couldn’t succumb to the curse of computing and had to come up with analytic treatments of their “agent-based models”. These analytic treatments were often not rigorous, and only a heuristic correspondence was […]... Read more »

Chazelle, B. (2012) Natural algorithms and influence systems. Communications of the ACM, 55(12), 101. DOI: 10.1145/2380656.2380679  

  • May 24, 2013
  • 10:07 AM
  • 1,941 views

Ants Reveal How to Build a Tunnel You Can't Fall Down

by Elizabeth Preston in Inkfish




It's hard to keep your footing in a steep tunnel made of loose dirt while others are scrambling around and over your body. Harder still in pitch blackness. That's why fire ants build tunnels that will catch them when they fall—a strategy human engineers might want to steal.

"Slips and missteps are likely a constant, recurring feature of life underground," says Nick Gravish, a graduate student in Daniel Goldman's rheology and biomechanics lab at Georgia Tech. Yet ants have to traverse their........ Read more »

Gravish, N., Monaenkova, D., Goodisman, M., & Goldman, D. (2013) Climbing, falling, and jamming during ant locomotion in confined environments. Proceedings of the National Academy of Sciences. DOI: 10.1073/pnas.1302428110  

  • May 23, 2013
  • 03:37 PM
  • 1,226 views

Researchers Turn a Smartphone into a Biosensor

by Jason Carr in Wired Cosmos

University of Illinois at Urbana-Champaign researchers have developed a cradle and app for the iPhone that uses the phone’s built-in camera and processing power as a biosensor to detect toxins, proteins, bacteria, viruses and other molecules. Having such sensitive biosensing capabilities in the field could enable on-the-spot tracking of groundwater contamination, combine the phone’s GPS … Read More →... Read more »

Gallegos, D., Long, K., Yu, H., Clark, P., Lin, Y., George, S., Nath, P., & Cunningham, B. (2013) Label-free biodetection using a smartphone. Lab on a Chip, 13(11), 2124. DOI: 10.1039/C3LC40991K  

  • May 23, 2013
  • 11:58 AM
  • 665 views

New Method for Clean and Safe Hydrogen Production Proposed

by dailyfusion in The Daily Fusion

Duke University engineers have developed a new safer method for catalytic hydrogen production. According to the authors of the study, it does not require high temperatures and produces smaller amounts of toxic chemicals than other industrial hydrogen production technologies.... Read more »

  • May 21, 2013
  • 10:15 AM
  • 962 views

Algorithmic view of historicity and separation of scales in biology

by Artem Kaznatcheev in Evolutionary Games Group

A Science publications is one of the best ways to launch your career, especially if it is based on your undergraduate work, part of which you carried out with makeshift equipment in your dorm! That is the story of Thomas M.S. Chang, who in 1956 started experiments (partially carried out in his residence room in […]... Read more »

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