Posts

November 17, 2014

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8:00 AM | Tested: The Show — Star Trek in Cinerama
No summary available for this post.
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6:00 AM | Compressive Sensing Reconstruction Solvers in Julia
While on Reddit, one of the reader ( Convex Optimization in Julia ) mentioned that he had done some implementations of some compressive sensing reconstruction solvers in Julia. He made those available on his GitHub:https://github.com/dahlend/CompressedSensing From the page:  CompressedSensingThis package contains several useful algorithms for compressed sensing, multiple measurement vectors, and sparse blind source separation. Available AlgorithmsSMV - Single Measurement VectorsIRLS […]
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1:28 AM | Uniformitarian or Paretoist
A uniformitarian view is that everything is equally important. For example, there are 118 elements in the periodic table, so all 118 are equally important to know about. The Pareto principle would say that importance is usually very unevenly distributed. The universe is essentially hydrogen and helium, with a few other elements sprinkled in. From […]

November 16, 2014

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11:34 PM | Editing Ultraviolet Photography
For people who do multispectral photography (infrared, visible, ultraviolet, etc) sometimes it can be tricky to achieve what you want in a traditional photo editor. That is why I am developing software to cater specifically for multispectral image processing. The … Continue reading →
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10:41 PM | Alexander Grothendieck 1928–2014
Creating vast beautiful mansions from the becoming of nothing L’espace d’un homme film source Alexander Grothendieck, who signed his works in French “Alexandre” but otherwise kept the spelling of his German-Jewish heritage, passed away Thursday in southwestern France. Today we mourn his passing, and try to describe some of his vision. Part of the story […]
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2:41 PM | What does the NSA think of academic cryptographers? Recently-declassified document provides clues
Brighten Godfrey was one of my officemates when we were grad students at Berkeley.  He’s now a highly-successful computer networking professor at the University of Illinois Urbana-Champaign, where he studies the wonderful question of how we could get the latency of the Internet down to the physical limit imposed by the finiteness of the speed of light.  (Right now, […]
Editor's Pick

November 14, 2014

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4:00 PM | Premium: Full Time-Lapse of the Farnsworth Project Makeup!
Premium: Full Time-Lapse of the Farnsworth Project Makeup!
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3:00 PM | Why Android Tablets are Finally Moving to 4:3 Screen Aspect Ratios
The very first true Android tablet was the original 7-inch Samsung Galaxy Tab, which was announced more than four years ago. Samsung actually sneaked that one in under Google's radar as the search giant wasn't technically prepared for non-phone Android devices. Still, the form factor stuck, and most of the Android slates we've seen over the years have looked very much like that device--they've all been widescreen. Well, until now.The Nexus 9 is the first mainstream Android tablet that has come […]
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2:46 PM | Die Quantencomputer
Those of you who read German (I don’t) might enjoy a joint interview of me and Seth Lloyd about quantum computing, which was conducted in Seth’s office by the journalist Christian Meier, and published in the Swiss newspaper Neue Zürcher Zeitung.  Even if you don’t read German, you can just feed the interview into Google Translate, […]
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2:42 PM | Yes, We Can Locate Philae and Here Is How ...
Phew! @ESA_Rosetta I am confident that our teams will find me. Wouldn’t like to lose touch with you. #CometLanding— Philae Lander (@Philae2014) November 13, 2014According to this New Scientist story, one of the people helping in locating Philae, the probe that just landed on a comet two days ago, cannot be found because "we don't have an algorithm for this' Let me be very clear: Yes we do. If you are that person at ESA or somewhere else, here is what you need to do:release […]
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11:00 AM | Tested Mailbag: One for Each of Us
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7:20 AM | Net Neutrality and the Contrarian Backlash
Earlier this week, President Barack Obama gave a speech laying out strong support for “net neutrality”. Obama called on the FCC to change classification of broadband internet providers to “common carrier” class, meaning that they would be prohibited from privileging — or blocking — particular sorts of traffic passing through their systems. The backlash was […]
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7:00 AM | Accelerated NMR spectroscopy with low-rank reconstruction
Before reading the following, let me make a statement that except for today, I will probably never, ever, feature a paper that is a RoMEO white journal such as Angewandte Chemie International Edition . Look at the restrictions.   If I do feature another of those journals by accident, please do let me know. We have to start somewhere. Xiaobo Qu just me the following:  Dear Igor,    Thanks for maintaining your blog to share the progress on sparse and low rank […]
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6:00 AM | Call for Papers : SPARS 2015 – Cambridge UK – 6-9 July 2015
Nick Kingsbury just sent me the following:   Dear Igor I understand from Volkan Cevher that Nuit Blanche has kindly advertised previous instances of the SPARS series of workshops including SPARS 2013 at EPFL. I am organising SPARS 2015 in Cambridge and would be very grateful if you could post the following CfP on Nuit Blanche. If you wish to shorten this announcement and just leave a link to the website given, then that will be fine as there is a CfP page on the website. Many […]

November 13, 2014

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11:09 PM | Episode 278 - Comet Landing - 11/13/2014
This week, Will, Norm, and Jeremy discuss landing spaceships on comets, Disneyland, Amazon's speaker thing, Taylor Swift, net neutrality, and a whole lot more. Enjoy!
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6:28 PM | Premium: Watch Frank Ippolito Sculpt the Farnsworth Project!
Premium: Watch Frank Ippolito Sculpt the Farnsworth Project!
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6:01 PM | In Brief: Knightscope Preparing Rollout of Security Droid
Knightscope, a robotics firm based in Mountain View, has been testing its K5 security robot since last year--and the droid may soon be ready for deployment. According to MIT Technology Review, the company has built seven of these robots that use HD cameras and navigation sensors to perform security sweeps and anomalous behavior along a patrol route. Four of the $6 million robots will be tested in the field at a tech company in the area, which has not been named (natch). The robots won't carry […]
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5:00 PM | Bits to Atoms: The State of Resin 3D Printing Technologies
In light of our recent video on the Form 1+ printer and as a lead-up to a full review, I wanted to delve deeper into 3D printing with liquid resin, so let's start with a primer on the state of resin 3D printing technologies and hardware.Printing with resin typically offers the highest resolution, detail and accuracy available with desktop 3D printing. For example, layer height for most resin printers ranges from 25 - 100 microns (.025mm - .10mm), as a comparison, human hair can range from 17 - […]
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4:30 PM | In Brief: Samsung Announces Project Beyond VR Camera for Gear VR
Oculus and Samsung have announced that Gear VR, the virtual reality headset accessory developed by both companies to work with Samsung's Note 4 phone, will be released early next month for an MSRP of $200 ($250 for the bundle with the Bluetooth controller). That's for what the company is calling the "Innovator Edition", which is essentially a commercially available developer kit for early adopters and developers. This announcement coincides with the release of the Oculus Mobile SDK (v0.4.0), […]
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3:18 PM | The News Is Out
Harvard Computer Science was given a sizable gift from Steve Ballmer;  we're excited at the opportunity to grow this gift will provide us over the next several years.  For more news, see the Crimson article, the Boston Globe article, the New York Times blog writeup, etc. 
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2:30 PM | Photo Gallery: The Making of the Farnsworth Project
We visited Frank's shop back in early October to watch him work on the sculpt for the Farnsworth project, which differs from the Zoidberg project because it's a prosthetics-based makeup, not a mask that anyone can wear. Here are photos from our shop visit, a close-up look at the silicone prosthetics, and the Farnsworth reveal at our live show.
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2:00 PM | Real-Life Professor Farnsworth from Futurama!
No summary available for this post.
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6:00 AM | Slides : FOCS 2014 Workshop on The Sparse Fourier Transform: Theory and Applications
Haitham Al-Hassanieh just sent me the following:  Hello Igor, Thanks for the nice blog. I wanted to let you know that we have recently organized a workshop on "Recent Developments in the Sparse Fourier Transform" at the FOCS'14 conference. The slides of the talks are posted online and might be of interest to the readers of your blog. Here is a link to the workshop page: http://groups.csail.mit.edu/netmit/sFFT/focs2014workshopBest RegardsHaitham Al-HassaniehComputer Science and […]
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2:43 AM | Cyclic fractions
Somewhere along the way you may have noticed that the digits in the decimal expansion of multiples of 1/7 are all rotations of the same digits: 1/7 = 0.142857142857… 2/7 = 0.285714285714… 3/7 = 0.428571428571… 4/7 = 0.571428571428… 5/7 = 0.714285714285… 6/7 = 0.857142857142… We can make the pattern more clear by vertically aligning the […]

November 12, 2014

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7:10 PM | In Brief: Rosetta's Philae Has Landed
At about 8AM Pacific time this morning, the Philae lander made contact with the surface of comet 67P/Churyumov-Gerasimenko.The first pictures have come back from the lander, including a gorgeous shot of the comet taken during the descent and this image of the landing site, Rosetta's ten-year journey wound through the solar system so the probe could match orbits with the comet. It will stay with the comet for the next 12 months, following its orbit around the Sun. Be sure to keep an eye on Phil […]
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5:38 PM | “Hello world” is the hard part
Kernighan and Ritchie’s classic book The C Programming Language began with a sample C program that printed “hello world.” Since then “hello world” has come describe the first program you write with any technology, even if it doesn’t literally print “hello world.” Hello-world programs are often intimidating. People think “I must be a dufus because […]
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4:33 PM | How To Fly and Tweak a Budget Mini Quadcopter
Anyone who has been following this column will know that I am not a fan of gamepad-like transmitters for quadcopters (or any other RC vehicle, for that matter). From a practical standpoint, these off-nominal controllers may not teach you the fine movements and muscle memory that will be needed when you transition to a standard transmitter. Cramped controllers may even cause you to learn things incorrectly. In the aerospace business, we called that “negative training”, and it’s […]
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4:30 PM | Three In The Room
A puzzle and a conference Zohar Manna is an expert on the mathematical concepts behind all types of programming. For example, his 1974 book the Mathematical Theory of Computation was one of the first on the foundations of computer programming. He wrote textbooks with the late Amir Pnueli on temporal logic for software systems. As […]
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3:00 PM | How to Make a Two-Part Mold (of a Lightsaber!)
No summary available for this post.
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2:46 PM | The Best iPhone 6 Case (So Far)
This post was done in partnership with The Wirecutter, a list of the best technology to buy.Read the full article below atTheWirecutter.comAfter surveying almost 1,000 Wirecutter readers and testing 60 iPhone 6 cases over a period of about 30 hours (so far), our current pick for the best all-around case is the NGP from Incipio. The NGP has protected several generations of iPhones (and many other devices) and has a reputation for providing solid protection and a good fit. It’s slim enough […]
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