Posts

September 09, 2014

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5:00 AM | Sparse recovery by means of nonnegative least squares - implementation -
Sparse recovery by means of nonnegative least squares by Simon Foucart, David KoslickiThis short note demonstrates that sparse recovery can be achieved by an `1-minimization ersatz easily implemented using a conventional nonnegative least squares algorithm. A connection with orthogonal matching pursuit is also highlighted. The preliminary results call for more investigations on the potential of the method and on its relations to classical sparse recovery algorithms.The implementation is […]
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5:00 AM | disPCA: Improved Distributed Principal Component Analysis
Improved Distributed Principal Component Analysis by Maria-Florina Balcan, Vandana Kanchanapally, Yingyu Liang, David WoodruffWe study the distributed computing setting in which there are multiple servers, each holding a set of points, who wish to compute functions on the union of their point sets. A key task in this setting is Principal Component Analysis (PCA), in which the servers would like to compute a low dimensional subspace capturing as much of the variance of the union of […]

September 08, 2014

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9:00 PM | T-ray Goggles Could See Through Walls and Skin
Researchers have used graphene -- an atom-thick sheet of carbon -- as a sensor that can detect energetic T-rays. Continue reading →
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5:13 PM | Science Blogging Something Completely Different
For many science writers, the science blog post has come to epitomize the Monty Python phrase, "and now for something completely different." And if not something completely different, than at least something different in one way or another from your typical science news story, your typical opinion column or or your typical print feature story, among other science story formats. As you might know if you've been following me on Twitter, I've been conducting interviews with science bloggers […]
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3:55 PM | A luxury gift for hawking
No summary available for this post.
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3:15 PM | Apple Sept 9 Preview: iPhone 6, iWatch and More
Expected: Bigger and better smartphones, a potential game-changing wearable and a sequel to one of the best tablets yet.
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2:30 PM | Squishy Robot Walks Through Acid, Fire and Ice
A silicone rubber robot still functions in subzero temperatures, high winds, methane flames and acid.
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2:00 PM | Update: Greenwashing 7 - Simple Green
Way back when I followed a CBC Marketplace show and assessed their assessment of the products, I mentioned that I should buy and try one of them: Simple Green. Well, I did, and I forgot to post an update. So, here it is. I tried it out on a stubborn dirty spot that both "Scrub Free" and "Fantastik" barely touched, even with a lot of scrubbing. I followed the directions on the bottle: for tough
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1:50 PM | Insatiable Birdies of the Second Kind
A new variant of the famous ‘Drinking Bird’ has been developed at Kent State University, Ohio, US. But first, some background on the the ‘Drinking Bird’ a.k.a. the ‘Insatiable Birdie’ … A version [* see note below] of the ‘novelty device’ first received a US patent in 1946, inspiring many to endeavour to explain how […]
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1:15 PM | DNA Identifies Jack the Ripper
A Jewish Polish-born immigrant named Aaron Kosminski has been implicated.
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1:02 PM | WGSQuikr: Fast Whole-Genome Shotgun Metagenomic Classification - implementation -
After Quikr: a Method for Rapid Reconstruction of Bacterial Communities via Compressive Sensing. and yesterday's blog entry on long read technology here is something for short reads:WGSQuikr: Fast Whole-Genome Shotgun Metagenomic Classification by David Koslicki, Simon Foucart, Gail RosenWith the decrease in cost and increase in output of whole-genome shotgun technologies, many metagenomic studies are utilizing this approach in lieu of the more traditional 16S rRNA amplicon technique. […]
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12:17 PM | Externalizing Responsibility.
In my work as a systems engineer in a hospital, I have a regular challenge that I face. Once I am called in to examine and model a system, I am almost invariably told that the true problem lies outside that system’s boundaries. The OR can’t fix its own turn-around time, because the real problem […]

September 07, 2014

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11:11 PM | The Ig Nobel Cookbook, volume 1
No summary available for this post.
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9:56 PM | The influence of homosexual necrophiliac ducks on popular culture
The influence of Kees Moeliker‘s Ig Nobel Prize-winning study “The First Case of Homosexual Necrophilia in the Mallard Anas platyrhynchos (Aves: Anatidae)”spreads and spreads. This past March saw the premiere, in London, of “The Homosexual Necrophiliac Duck Opera.” More recently, the world was treated to the video called “Scientifically Accurate Duck Tales“, which is based both on […]
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8:35 PM | Running with kids…or maybe from them
Even a couple years ago, it was hard to get a workout in once the younger son was home.  I was lucky in that the older son is a bit of a homebody and could watch his brother if Mike wasn’t around. Now, however, I have a new dilemma.  The younger son has decided he’s […]
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1:46 PM | Misheard Song Lyrics (computerised)
No summary available for this post.
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1:08 PM | MOOCs for marmosets, sort of, on branch if not online
Marmosets learn skills from watching instructional videos, at least some marmosets do, provided that someone does show them instructional videos, and further provided that those videos show tasks of interest to the marmosets. Such was the conclusion drawn by humans who did an experiment described by Davide Castelvecci in Nature News: Marmoset see, marmoset do Monkeys in the wild learn skills […]
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12:45 PM | Tasty Tech Eye Candy Of The Week (Sept. 7)
Here, we feature a few thrilling techs from the fastest electric car in the world to a hairpin skyscraper that offers heart-pounding adventure rides.
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12:35 PM | Whither Dickkopf
Investigator Ken Gorelick is much taken with the title of this new study, which has an unusual interplay of German and English meanings: “High serum levels of Dickkopf-1 are associated with a poor prognosis in prostate cancer patients,” Tilman D Rachner, Stefanie Thiele, Andy Göbel, Andrew Browne, Susanne Fuessel, Kati Erdmann, Manfred P Wirth, Michael Fröhner, […]
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10:03 AM | Sunday Morning Insight: Escaping Feynman's NP-Hard "Map of a Cat": Genomic Sequencing Edition
If you have read Nuit Blanche long enough, you might have seen this figure several times. While compelling in comparison to Moore's law, something immensely more important has happened recently.With long read technology, DNA Sequencing has crossed over from being an NP-complete enterprise to being in P. How ? What does it mean ? Why should you care ?NP-complete fields yield Cognitive OverloadI read Feynman's "Surely You're Joking, Mr. Feynman!" a long time ago but one of the little story that […]

September 06, 2014

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12:53 PM | A Suggestion that Wearing a Bra Does Not Cause Cancer
No summary available for this post.
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8:00 AM | Saturday Morning Videos: Some ICML 2014 presentations.
There goes your saturday morning, here are some videos from the ICML meeting that might be of interest to the readers of Nuit Blanche:Robust Principal Component Analysis with Complex Noise Authors: Qian Zhao; Deyu Meng; Zongben Xu; Wangmeng Zuo; Lei ZhangRandomized Nonlinear Component Analysis Authors: David Lopez-Paz; Suvrit Sra; Alex Smola; Zoubin Ghahramani; Bernhard SchoelkopfDiscriminative Features via Generalized Eigenvectors Authors: Nikos Karampatziakis; Paul […]
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12:15 AM | Insights, scientific and dashcam, into road rage
No summary available for this post.

September 05, 2014

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9:17 PM | Surfing on Moore's Law
A simple way for a second inflection point in genomic sequencing (A Second Inflection Point in Genome Sequencing ? and then ...) is to surf on Moore's law. While not currently applied to long read sequencing technology such as that of Nanopore, PacBio or Quantum Biosystems, here is an example: InSilixa Presents DNA Testing Sensor (h/t Vladimir Koifman) Join the CompressiveSensing subreddit or the Google+ Community and post there ! Liked this entry ? subscribe to Nuit Blanche's feed, […]
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8:23 PM | Lunar Detection Of Ultra-High-Energy Cosmic Rays And Neutrinos
Spotted on the ArXiv Physics blog, what about using the SKA array and the Moon as a collector, that would certainly qualify as sensors the size of a planet :Lunar detection of ultra-high-energy cosmic rays and neutrinos by J. D. Bray, J. Alvarez-Muñiz, S. Buitink, R. D. Dagkesamanskii, R. D. Ekers, H. Falcke, K. G. Gayley, T. Huege, C. W. James, M. Mevius, R. L. Mutel, R. J. Protheroe, O. Scholten, R. E. Spencer, S. ter VeenThe origin of the most energetic […]
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7:44 PM | Google Glass App Knows Your Age and Mood
Facial recognition system is designed to assess the mood of whomever you're looking at. Continue reading →
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4:49 PM | Yes, Those Trees Are Watching You
Using four video projectors and special animation software, artists illuminated trees with huge 3-D faces that moved and emoted. Continue reading →
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4:14 PM | Economic Growth and Internet Usage Impact on Publication Productivity
Economic Growth and Internet Usage Impact on Publication Productivity among ASEAN’s and World’s Best UniversitiesHossein Gholizadeh, Hadi Salehi, Mohamed Amin Embi, Mahmoud Danaee, Ali Ordi, Farid Habibi Tanha, Nader Ale Ebrahim, Noor Azuan Abu Osman AbstractMeasuring the number of papers which are published each year, publication productivity is the factor which shows the reputation of universities and countries. However, the effect of growing economy and using internet on the […]
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2:52 PM | Memory and the Lack Thereof.
This past week, back in St. Louis, I attended two of my old meetings, my Sunday mixed and my Wednesday men’s. It was an interesting experience. I had a good time in St. Louis. I was able to see many old friends and show BB around my old haunts, and the home I still own […]
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2:00 PM | Celeb Photo Hack: 4 Ways to Keep iCloud Data Safe
A security exploit puts anyone who uses iCloud at risk.
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