Posts

October 21, 2014

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8:14 AM | On Sparse Representation in Fourier and Local Bases - implementation -
Following up on this entry "On Sparse Representation in Fourier and Local Bases", Pier Luigi followed up with an implementation of ProSparse and the code that produces the figures in that article:   Dear Igor,thanks for the prompt answer.In attachment [ http://www.commsp.ee.ic.ac.uk/~pld/software/ ] you'll find the MATLAB files to reproduce Fig2 and Fig3 of the paper.Note that you still need to have the CVX package installed in your Matlab distribution (http://cvxr.com/cvx/) to run the […]

October 20, 2014

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9:25 PM | Racing Mini-Quads with FPV Control
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9:00 PM | In Brief: Research Shows Plants Can Detect When They're Being Eaten
Don't worry, this isn't about plants having consciousness or anything like that. Modern Farmer reports on a new study conducted at the University of Miami, in which researchers found that a thale cress plant was able to physiologically react to its leaves being eaten. In the study, the researchers mimicked the vibrations made by a caterpillar when it chews on the plant, which caused the thale cress to excrete extra predator-deterring oils. The revelation isn't that the plant is self-aware, but […]
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4:20 PM | Tested Asks: How are Holograms Made?
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3:00 PM | Preparing students for less-supportive environments
Over at Small Pond Science, I have a post today about how the events at last week’s Grace Hopper conference led to a discussion about better preparing our students to navigate less-supportive environments, particularly in jobs, internships, and research positions. Check it out, and if you have any insights to share, join in the conversation […]
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6:51 AM | Google Play App Roundup: Potential, iPollute, and Talon Plus
It's that time of the week again. Time to shake off the weekend vibe and get back to work. But you can probably spare a few minutes to check out some new apps. This is the Tested Google Play App Roundup, which is where we tell you about the best new and newly updated apps on Android. Just follow the links to Google Play.This week your battery has a new best friend, clay gets dirty, and Twitter gets pretty.PotentialAs the cost of Android devices come down, it's increasingly likely that you might […]
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6:49 AM | Show and Tell: Bluetooth Hands-Free Car Adapter
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October 19, 2014

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3:05 PM | Watching Closely: Asteroids, Comets
Near-Earth Asteroid Discovery Statistics (h/t Ron Baalke)Twenty years ago, we watched an asteroid hit Jupiter with mostly Earth or orbital based telescopes. Today, we will have a comet past Mars and it will be watched by our robots on Mars, in less than a month, we will be harpooning another comet on a spot that needs a name, while Hubble continues to downselect potential asteroid by one of our spacecraft in the Kuiper belt. We live in interesting times.Watch live streaming video […]
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5:00 AM | Sunday Morning Insight: Crossing into P territory
This is a follow-up to the recent  Sunday Morning Insight on Escaping Feynman's NP-Hard "Map of a Cat": Genomic Sequencing Edition  To recap, in compressive sensing, it's been known for a while that some solutions can be found thanks to l_1 (P or Polynomial time) relaxation of combinatorial problems (NP). In fact, the whole field of compressive sensing took off when people realized one could be on the P side most of the time.In genome sequencing the latest long read technology have […]

October 18, 2014

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12:31 PM | A New Provable Factoring Algorithm
Factoring, factoring, the whole day through, keeps on my mind—apologizes to Hoagy Carmichael and Stuart Gorrell Waterloo Mathematics source Michael Rubinstein is an expert on number theory, who is on the faculty of the University of Waterloo. He is one of the organizers of a 61-birthday symposium being held December 15–19 in Princeton for my […]
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12:11 PM | Experts vs Professionals
Working with professionals can be a joy. Not only can they solve your problem, they may help you see what problem you should solve. I’ve had several instances lately when I hired a pro to do something I’d attempted myself. In each case I was very pleased and wondered why I hadn’t done this sooner. […]
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1:00 AM | Hot Toys Batman Armory 1/6th Scale Figure Set
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October 17, 2014

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8:35 PM | In Brief: Skepticism about Lockheed's Fusion Reactor Ambitions
Lockheed's announcement that its Skunk Works division had made a theoretical breakthrough in developing a compact fusion reactor got people very excited this week. The idea of a clean, safe, and compact way to produce nuclear power easily spurs the imagination (as well as Mr. Fusion references). And even though Lockheed's own engineers admit that it'll be 5-10 years before they can put their theories to practice in a viable reactor, they seemed confident in Lockheed's videos. Less optimistic […]
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7:45 PM | NIkon's D750 Temps me to Switch from Canon
Early last month, Nikon announced its D750 full-frame DSLR camera. It sits between the popular D810 and entry level full-frame D610. The two aforementioned cameras are the Nikon equivalents of the Canon's successful Canon 5D MK III and 6D, but there's no comparable camera in Canon's lineup to the D750. And now that I've read some early reviews of the D750, this is beginning to worry me as a Canon user. First off, some specifications. The D750 is a 24MP full-frame camera running Nikon's EXPEED 4 […]
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7:30 PM | Using Your 3D Printer as a 2D Plotter
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7:00 PM | In Brief: The Hardest Part of Designing a Typeface
Typeface designer Tobias Frere-Jones (formerly of Hoefler & Frere Jones, who recently settled his lawsuit against former partner) writes an wonderfully insightful personal blog about typography and design. In his latest entry, he addresses what he considers the most challenging part of designing a new typeface: finding an appropriate name. Think about what a name evokes, and the lexicon of typographical nomenclature. Historically, typeface names would be derived from broad genres like Roman […]
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7:00 AM | Print the Mystery Object: Who Said That? - 10/17/2014
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5:00 AM | On Sparse Representation in Fourier and Local Bases
I just received the following from Pier Luigi:  Dear Igor, I hope things are good with you and sorry for this email out of the blue. I am writing to you because together with Yue Lu from Harvard University we have revisited the classical problem of finding the sparse representation of a signal in a pair of bases, specifically Fourier and local bases, and introduced a polynomial complexity algotithm, ProSparse, that solves the problem under the unicity constraint only. Thus the algorithm […]
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4:41 AM | A Good Day to Dad Hard - Episode 6 - 10/16/2014
Who are the dads? Jeff Green, Vinny Caravella, Dave Snider, and Will Smith. Between them, they have have more than 25 years of dad experience. They return to discuss the latest in dad technology, pro dad moves, and adding a second kid to the brood.

October 16, 2014

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7:35 PM | Tested In-Depth: Mac OS X 10.10 Yosemite
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7:00 PM | Apple Announces New iPads, Retina iMac, and Mac Mini
Despite the product leaks via its own store yesterday, Apple managed to surprise us with the announcements at this morning's press briefing. We'll start off with the annual iPad updates, which fall into two categories. On the full-size iPad, Apple didn't announce any "pro" model, sticking with improvements to the iPad Air. It's now 6.1mm thick, uses an optically bonded LCD, supports 802.11AC MIMO Wi-Fi, and runs off of the expected A8X. Weight finally drops below one pound at 435 grams. TouchID […]
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3:28 PM | How to lobby for sustainable mobility?
In general, public transport, e-mobility, bicycle and pedestrian traffic are summarized as sustainable modes of transport. There is a consensus among researchers, planners and most politicians that sustainable mobility should be promoted in order to reduce the negative effects of motorized individual traffic (MIT). Especially urban agglomerations invest much effort in shifting the modal split […]
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2:18 PM | Around The Blogs in 78 Summer Hours
There were quite a few blog entries of interest recently, here is a sample that got my attention:Anna Applied mathematicians vs Theoretical Computer ScientistsMuthuStreaming Extravaganza AlexMirror descent is, in a precise sense, a second order algorithmDirkConvexity and continuityDustinAn intuition for concentration inequalitiesTianyi List of Submodular Optimization on Streaming Data (In Update)  Divide-and-Conquer Learning by Anchoring a Conical HullAfonsoNorm of random matrices […]
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11:04 AM | IGVFox: Integrative Genomics Viewer control through mozilla Firefox
I've just pushed IGVFox 0.1 an add-on for Firefox, controlling IGV, the Integrative Genomics Viewer.This add-on allows the users to set the genomic position of IGV by just clicking a hyperlink in a HTML page. The source code is available on github at https://github.com/lindenb/igvfox and a first release is available as a *.xpi file at https://github.com/lindenb/igvfox/releases. That's it,
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11:00 AM | This Is Only a Programming Note
There's no new episode of This Is Only a Test this week, but we're excited to announce that there are three podcasts to enjoy on Tested instead. Subscribe to CreatureGeek, A Bunch of Dads, and Mr. & Mrs. Smith.
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9:00 AM | Inspire: Three Questions with Kate Russell
In our second video in our inspire series we catch up with BBC Click’s Kate Russell.  Many of you probably know Kate from her time at BBC Click but did you also know that she is a published author and has spoken at Girl Geek Dinners! We asked Kate three questions to provide an insight […]
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5:52 AM | NYCC: Triforce's Video Game Replica Props
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12:18 AM | My 10 Favorite Items in Prop Store's Epic Auction
Tomorrow's a big day for prop collectors and replica prop makers. As we mentioned in our video of Adam's new Samurai armor from 47 Ronin, London and LA-based Prop Store is gearing up for one of the largest film prop auctions in recent memory, and easily one of the most important. The auction is mere hours away, and will be held live in London at the Westfield Mall's Vue Cinema. We were fortunate to see some of those props in person at Comic-Con as well, where Prop Store had iconic items like […]

October 15, 2014

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11:12 PM | New York: Strata Conference, Day 1
I’m attending the O’Reilly Strata Conference (the well-respected techical books publisher, not the blowhard TV personality). This is the east coast edition, at the Javits Convention Center in New York City. Today was tutorials day. Out of about a dozen tracks, I picked the PyData track. This was a rewarding choice. The developers of varioius […]
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5:51 PM | Bits to Atoms: 3D Printing Quicksilver's Stereobelt
Remember a few months ago when I spent time obsessing over Quicksilver’s audio gear from X-men: Days of Future Past? I thought that exploration was enough to get it out of my system--until my friend Hadley told me that she would be cosplaying as Quicksilver for New York Comic Con. Without missing a beat, I proclaimed that I had to build her an accurate Stereobelt prop. And so my obsession began anew.Prototype - designing multiple parts - more work for better resultsTo recap: the […]
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