Posts

January 08, 2015

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6:52 PM | Satire.
I have written before that offensive humor is the edge on the blade of liberty. Giving offense has a long and critical tradition. Without the right to offend, we do not have the right to breathe. Because someone, somewhere, right now, is offended by our breath. Offending Muslims with caricatures of Muhammed isn’t nice. Nor is […]
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6:49 PM | Alien-Head-Like Virtual Realty Rig Surfaces at CES
Bigger is apparently better with the GCS3 Gamecaster virtual reality headset.
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4:30 PM | Quasi-Monte Carlo Feature Maps for Shift-Invariant Kernels
Recently, Vikas Sindhwani talked about Random Embeddings, Matrix-valued Kernels and Deep Learning. As a follow-up, I mentioned this Book on The Discrepancy Method by Bernard Chazelle (thanks to Sebastien) that should allow us to make more appropriate choices in the Random Features space when approximating Kernel Machines.Here is the actual paper on arxiv that Vikas mentioned in his talk (It had been mentioned here earlier as well): Quasi-Monte Carlo Feature Maps for Shift-Invariant Kernels by […]
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2:46 PM | The Specter of the Specter of Internet Pornography
No summary available for this post.
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12:30 PM | In the Lab: Development of Carbon Based Electrochemical Sensors for Water Analysis
Julie Macpherson is a Professor in the Department of Chemistry at the University of Warwick, UK. Her research focuses on the development of sensors based on different forms of carbon, including conducting diamond, carbon nanotubes and graphene, with a range of applications in environmental monitoring, healthcare technologies and water research. She has published over 150... The post In the Lab: Development of Carbon Based Electrochemical Sensors for Water Analysis appeared first on Johnson […]
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11:00 AM | Charlie
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6:00 AM | Approximate Subspace-Sparse Recovery in the Presence of Corruptions via $\ell_1$-Minimization
Having featured the work of Ehsan before, it is just a question of time before we get to have a peak at an implementation of this. I can't wait.Approximate Subspace-Sparse Recovery in the Presence of Corruptions via $\ell_1$-Minimization by Ehsan Elhamifar, Mahdi Soltanolkotabi, Shankar SastryHigh-dimensional data often lie in low-dimensional subspaces corresponding to different classes they belong to. Finding sparse representations of data points in a dictionary built from the collection of […]

January 07, 2015

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9:40 PM | Secondary Lithium-Ion Battery Anodes: From First Commercial Batteries to Recent Research Activities
Following the development of commercial secondary lithium-ion batteries (LIBs), this article illustrates the progress of therein-utilised anode materials from the first successful commercialisation to recent research activities. First, early scientific achievements and industrial developments in the field of LIBs, which enabled the remarkable evolution within the last 20 years of this class of batteries, are reviewed. Afterwards, the characteristics of state-of-the-art commercially available […]
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8:02 PM | Drexel Snapshot: Butterfly is Half Female, Half Male
This butterfly has not been photoshopped. It is exactly half male and half female, a very rare condition known as gynandromorphy. This results in the dramatically different coloring on each half of the animal in species such as this one, in which the sexes have noticeably different looks. The gynandromorph butterfly was found by chance … Continue reading →
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7:26 PM | Wireless Charger Powers Devices from 15 Feet Away
The WattUp system bounces multiple RF energy packets off floor, ceiling and walls.
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5:50 PM | Chat With Your Future Self
The site is part of an ad campaign by European Telecom company, Orange.
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4:28 PM | Why does Deep Learning work? - A perspective from Group Theory
@gappy3000 @geomblog @igorcarron "Why pre-training helps" would have been a fine title.— snippyhollow (@syhw) January 7, 2015 h/T to Giuseppe Guissepe, Gabriel and Suresh for the discussion.Here is a new insight from a paper that is up for review at ICLR2015:We give an informal description. Suppose G is a group that acts on a set X by moving its points around ( e.g., groups of 2 x 2 invertible matrices acting over the euclidean plane). Consider x2X, and let Ox be the set of all points […]
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2:52 PM | Explosive Lemming Outbreaks in Fennoscandia
No summary available for this post.
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9:27 AM | Groovy surfaces
Physical Review E 90, 052501 (2014) Murray and colleagues have reported a new technique for creating patterned surface-alignment of liquid crystals: using the tip of an atomic force microscope to inscribe grooves in a polymer layer [1]. The method allows a largely arbitrary, and ultra-high resolution, alignment of the liquid crystal to be imposed at the surface, which, in turn, may be used to induce on-demand a wide range of interesting topological defect patterns. [1] B. S. Murray, R. A. […]
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9:24 AM | New mesophase
Soft Matter 10, 9105 (2014) Chen and colleagues have reported what is essentially a new liquid crystal phase, which they name the random grain boundary phase [1]. The mesophase is observed in achiral molecules with a ‘hockey-stick’ shape and may be considered as a type of dark conglomerate phase. Like previous dark conglomerates observed in bent-core systems, its basis is smectic layering and it spontaneously forms chiral domains of opposite handedness that display optical activity. […]
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6:00 AM | Lifting for Blind Deconvolution in Random Mask Imaging: Identifiability and Convex Relaxation / Learning to Deblur
When I wrote about A Quick Panorama of Sensing from Direct Imaging to Machine Learning, I was merely showing a parallel between two approaches. But a year later, we are now seeing another aspect of The Great Convergence: Two ways to go about a similar task (blind deconvolution), the compressive sensing approach determining sample complexity (how many images must be taken for the task) and eventually the transfer function with different arguments using concentration of measures results and the […]
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4:15 AM | Wordless Wednesday: Squirrel!
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2:25 AM | Why Ditching Comment Sections Sucks for Science
Warning: The following contains many opinions. How many different times and ways have we heard the 'to keep or ditch the comments' argument? Online comment sections are good because they provide a venue for open debate. Comment sections are bad because they can change readers' perceptions of the preceding article, news story, blog post, etc. Comment sections are good because they embody a departure from the old broadcast, one-way model of mass communication. Comment sections are bad […]

January 06, 2015

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11:46 PM | Electric Ink Gives Walls Mood-Changing Color
A new material called Prism can be programmed to display different colors and patterns in a way that consumes very little power.
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6:21 PM | Software: The Next Challenge for Grid Batteries
It seems like every day we hear about another incremental breakthrough in battery technology. By tweaking existing battery chemistries or inventing new chemistries altogether, university researchers... -- Read more on ScientificAmerican.com
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4:50 PM | “Electrolytes for Lithium and Lithium-Ion Batteries”
“Electrolytes for Lithium and Lithium-Ion Batteries”, published in 2014 by Springer, is Volume 58 in the Modern Aspects of Electrochemistry series. The volume is edited by T. Richard Jow, Kang Xu, Oleg Borodin and Makoto Ue. In the preface the Editors set out their purpose in compiling this volume, which was to provide a comprehensive overview of electrolytes for lithium-ion batteries. It covers electrolyte research and development in the last ten years and may be used as a […]
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4:50 PM | “Nanomaterials for Lithium-Ion Batteries: Fundamentals and Applications”
“Nanomaterials for Lithium-Ion Batteries: Fundamentals and Applications” is edited by Rachid Yazami and is published by Pan Stanford Publishing Pte Ltd. The book covers the latest developments in new materials for lithium-ion batteries including examples of novel alloys, oxides and conversion materials for use as anodes and phosphates, high voltage spinels and layered oxides for use as cathodes. Composite structures incorporating reduced graphene oxide are considered along with thin […]
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4:30 PM | REMBO : Bayesian Optimization in a Billion Dimensions via Random Embeddings - implementation -
I am a little late on this one, but here is a Random Features approach in order to enable large scale bayesian computations:Bayesian Optimization in a Billion Dimensions via Random Embeddings by Ziyu Wang, Masrour Zoghi, Frank Hutter, David Matheson, Nando de FreitasBayesian optimization techniques have been successfully applied to robotics, planning, sensor placement, recommendation, advertising, intelligent user interfaces and automatic algorithm configuration. Despite these successes, the […]
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3:00 PM | Iris Scan Unlocks This Laptop
At CES 2015, Eyelock showed off a miniaturized version of its iris-scanning technology embedded in a laptop.
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2:12 PM | Cup-of-coffee micro-droplets surface physics, poetically
No summary available for this post.
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6:00 AM | Pose estimation using time-resolved inversion of diffuse light
Outstanding !Pose estimation using time-resolved inversion of diffuse light Dan Raviv, Christopher Barsi Nikhil Naik, Micha Feigin, and Ramesh Raskar We present a novel approach for evaluation of position and orientation of geometric shapes from scattered time-resolved data. Traditionally, imaging systems treat scattering as unwanted and are designed to mitigate the effects. Instead, we show here that scattering can be exploited by implementing a system based on a femtosecond laser and a streak […]

January 05, 2015

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8:46 PM | Internet of Me Is the Next Big Thing
One of the major themes at the International Consumer Electronics Show in Las Vegas is connecting thousands of objects that people use each day.
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8:09 PM | 'Breathing' Window Tints to Block Sun, Charges Itself
The process that tints the window actually produces, instead of uses, a small amount of electricity, which could be harnessed to power electronics.
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7:00 PM | Small Screens Prevent Kids from Sleeping
Children with access to smartphones at night get 21 fewer minutes of sleep per night than children who have no electronic devices before bedtime.
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4:30 PM | Compressing Deep Convolutional Networks using Vector Quantization
Quantization in CNNs : Compressing Deep Convolutional Networks using Vector Quantization by Yunchao Gong, Liu Liu, Ming Yang, Lubomir BourdevDeep convolutional neural networks (CNN) has become the most promising method for object recognition, repeatedly demonstrating record breaking results for image classification and object detection in recent years. However, a very deep CNN generally involves many layers with millions of parameters, making the storage of the network model to be extremely […]
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