Nuevo varapalo para la interpretación como materia oscura de la línea de rayos X a 3.5 keV

2018-12-19 10:07:34 @ La Ciencia de la Mula Francis

La línea de rayos X alrededor de 3.5 keV observada por el telescopio espacial XMM-Newton de la ESA sigue siendo polémica. Podría ser debida a la desintegración de una partícula […] La entrada Nuevo varapalo para la interpretación como materia oscura Tweet

Man sues feds after being detained for refusing to unlock his phone at airport

2018-12-19 07:16:21 @ Hacker News 200

Article URL: https://arstechnica.com/tech-policy/2018/12/man-sues-feds-after-being-detained-for-refusing-to-unlock-his-phone-at-airport/ Comments URL: https://news.ycombinator.com/item?id=18713499 Points: 251 # Comments: 174 Tweet

Windows Sandbox

2018-12-19 07:01:16 @ Hacker News 200

Article URL: https://techcommunity.microsoft.com/t5/Windows-Kernel-Internals/Windows-Sandbox/ba-p/301849?ranMID=43674&ranEAID=je6NUbpObpQ&ranSiteID=je6NUbpObpQ-_UZUOlZ2ZyTOTejYypcnAQ&epi=je6NUbpObpQ-_UZUOlZ2ZyTOTejYypcnAQ&irgwc=1&OCID=AID681541_aff_7795_1 Tweet

How does your garden grow in space?

2018-12-19 06:00:00 @ Eurekalert

(Botanical Society of America) Understanding how plants respond to microgravity is critical to providing fresh food during space exploration initiatives. Researchers at the University of Florida Space Plants Lab compared two methods - RNA-Seq and microarra Tweet

Research sheds new light on what drove last, long-term global climate shift

2018-12-19 06:00:00 @ Eurekalert

(University of Exeter) The quest to discover what drove the last, long-term global climate shift on Earth, which took place around a million years ago, has taken a new, revealing twist. Tweet

As Facebook Raised a Privacy Wall, It Carved an Opening for Tech Giants

2018-12-19 02:51:55 @ Hacker News 200

Article URL: https://www.nytimes.com/2018/12/18/technology/facebook-privacy.html Comments URL: https://news.ycombinator.com/item?id=18712382 Points: 360 # Comments: 127 Tweet

Why Is the Split Keyboard Not Available on iPad Pros?

2018-12-19 02:40:04 @ Daring Fireball

I really like my new 11-inch iPad Pro. I’m using it more than I’ve used an iPad in a long time, especially for reading. It’s my favorite device for reading ever, and I read a lot. But it has been driving me nuts that it doesn’t support a split on-screen ke Tweet

Google Tech Dev Guide

2018-12-19 02:31:12 @ Hacker News 200

Article URL: https://techdevguide.withgoogle.com/ Comments URL: https://news.ycombinator.com/item?id=18712282 Points: 325 # Comments: 174 Tweet

An Improved Cost Function for Hierarchical Cluster Trees. (arXiv:1812.02715v2 [cs.DS] UPDATED)

2018-12-19 02:30:00 @ cs.CC updates on arXiv.org

Hierarchical clustering has been a popular method in various data analysis applications. It partitions a data set into a hierarchical collection of clusters, and can provide a global view of (cluster) structure behind data across different granularity leve Tweet

Mo-Net: Flavor the Moments in Learning to Classify Shapes. (arXiv:1812.07431v1 [cs.CG])

2018-12-19 02:30:00 @ cs.CG updates on arXiv.org

A fundamental question in learning to classify 3D shapes is how to treat the data in a way that would allow us to construct efficient and accurate geometric processing and analysis procedures. Here, we restrict ourselves to networks that operate on point c Tweet

Spectral Sequences, Exact Couples and Persistent Homology of filtrations. (arXiv:1308.0801v7 [math.AT] UPDATED)

2018-12-19 02:30:00 @ cs.CG updates on arXiv.org

In this paper we study the relationship between a very classical algebraic object associated to a filtration of spaces, namely a spectral sequence introduced by Leray in the 1940's, and a more recently invented object that has found many applications -- na Tweet

The continuous weak order. (arXiv:1812.02329v2 [math.CO] UPDATED)

2018-12-19 02:30:00 @ cs.CG updates on arXiv.org

The set of permutations on a finite set can be given the lattice structure known as the weak Bruhat order. This lattice structure is generalized to the set of words on a fixed alphabet $\Sigma$ = {x,y,z,...}, where each letter has a fixed number of occurre Tweet

A Fast Combination of AES Encryption and LZ4 Compression Algorithms. (arXiv:1812.07030v1 [cs.CR])

2018-12-19 02:30:00 @ cs.DS updates on arXiv.org

From a long time ago, beside encryption of data and making it secure, compression packing it was also important that could make transmission of data faster. In the past years need for improvement of encryption and compression for a fast and easy transmissi Tweet

Information theoretical clustering is hard to approximate. (arXiv:1812.07075v1 [cs.DS])

2018-12-19 02:30:00 @ cs.DS updates on arXiv.org

An impurity measures $I: \mathbb{R}^d \mapsto \mathbb{R}^+$ is a function that assigns a $d$-dimensional vector ${\bf v}$ to a non-negative value $I({\bf v})$ so that the more homogeneous ${\bf v}$, with respect to the values of its coordinates, the larger Tweet

A Scalable Heuristic for Fastest-Path Computation on Very Large Road Maps. (arXiv:1812.07441v1 [cs.DS])

2018-12-19 02:30:00 @ cs.DS updates on arXiv.org

Fastest-path queries between two points in a very large road map is an increasingly important primitive in modern transportation and navigation systems, thus very efficient computation of these paths is critical for system performance and throughput. We pr Tweet

Efficient Autotuning of Hyperparameters in Approximate Nearest Neighbor Search. (arXiv:1812.07484v1 [cs.DS])

2018-12-19 02:30:00 @ cs.DS updates on arXiv.org

Approximate nearest neighbor algorithms are used to speed up nearest neighbor search in a wide array of applications. However, current indexing methods feature several hyperparameters that need to be tuned to reach an acceptable accuracy--speed trade-off. Tweet

On zero-free regions for the anti-ferromagnetic Potts model on bounded-degree graphs. (arXiv:1812.07532v1 [math.CO])

2018-12-19 02:30:00 @ cs.DS updates on arXiv.org

For a graph $G=(V,E)$, $k\in \mathbb{N}$, and a complex number $w$ the partition function of the univariate Potts model is defined as \[ {\bf Z}(G;k,w):=\sum_{\phi:V\to [k]}\prod_{\substack{uv\in E \\ \phi(u)=\phi(v)}}w. \] In this paper we give zero-free Tweet

Optimal Document Exchange and New Codes for Insertions and Deletions. (arXiv:1804.03604v2 [cs.DS] UPDATED)

2018-12-19 02:30:00 @ cs.DS updates on arXiv.org

We give the first communication-optimal document exchange protocol. For any $n$ and $k < n$ our randomized hashing scheme takes any $n$-bit file $F$ and computes a $\Theta(k \log \frac{n}{k})$-bit summary from which one can reconstruct $F$ given a relat Tweet

The Story of HyperLogLog: How Flajolet Processed Streams with Coin Flips. (arXiv:1805.00612v2 [cs.DS] UPDATED)

2018-12-19 02:30:00 @ cs.DS updates on arXiv.org

This article is a historical introduction to data streaming algorithms that was written as a companion piece to the talk "How Philippe Flipped Coins to Count Data", given on December 16th, 2011, in the context of the conference in honor of "Philippe Flajol Tweet

An Improved Cost Function for Hierarchical Cluster Trees. (arXiv:1812.02715v2 [cs.DS] UPDATED)

2018-12-19 02:30:00 @ cs.DS updates on arXiv.org

Hierarchical clustering has been a popular method in various data analysis applications. It partitions a data set into a hierarchical collection of clusters, and can provide a global view of (cluster) structure behind data across different granularity leve Tweet

Serverless and startups, the beginning of a beautiful friendship

2018-12-19 00:38:13 @ AWS Blog

Guest post by AWS Serverless Hero Slobodan Stojanović. Slobodan is the co-author of the book Serverless Applications with Node.js; CTO of Cloud Horizon, a software development studio; and CTO of Vacation Tracker, a Slack-based, leave management app. Slobod Tweet

What a Newfound Kingdom Means for the Tree of Life

2018-12-18 21:58:01 @ Hacker News 200

Article URL: https://www.quantamagazine.org/what-a-newfound-kingdom-means-for-the-tree-of-life-20181211/ Comments URL: https://news.ycombinator.com/item?id=18710486 Points: 244 # Comments: 59 Tweet

TEDWomen 2018 Film Festival: Our program of conference shorts

2018-12-18 21:00:57 @ TED Blog

Between the amazing speakers of TEDWomen, there’s a carefully programmed mini film festival — brilliant short films, curated by Jonathan Wells and Anyssa Samari, that set (or re-set) the mood in the theater, and celebrate the creativity of wome Tweet

Meet Flockjay, a Company in the YC Winter 2019 Batch

2018-12-18 19:00:12 @ YC

At YC, founders decide when they want to announce that they're part of the program. Internally we call this a company's "YC launch". Meet Flockjay, the first YC Winter 2019 company to announce that they're part of the batch. Flockjay is a $0-upfront online Tweet

Charla en Escépticos en el Pub Compostela

2018-12-18 18:33:42 @ brucknerite

El pasado día 14 de diciembre tuve el placer de dar una charla en Santiago de Compostela para Escépticos en el Pub Compostela… Tweet

How about fixing the workplace rather than avoiding it at 4am?

2018-12-18 18:23:56 @ Signal vs. Noise

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NeuNetS: Automating Neural Network Model Synthesis for Broader Adoption of AI

2018-12-18 18:00:58 @ IBM Research blog

On December 14, 2018, IBM released NeuNetS, a fundamentally new capability that addresses the skills gap for development of latest AI models for a wide range of business domains. NeuNetS uses AI to automatically synthesize deep neural network models faster Tweet

Happy Pacifists

2018-12-18 17:38:12 @ Signal vs. Noise

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Stop Learning Frameworks

2018-12-18 15:58:16 @ Hacker News 200

Article URL: https://sizovs.net/2018/12/17/stop-learning-frameworks/ Comments URL: https://news.ycombinator.com/item?id=18706785 Points: 482 # Comments: 283 Tweet

How Alexa knows “peanut butter” is one shopping-list item, not two

2018-12-18 15:44:04 @ Hacker News 200

Article URL: https://developer.amazon.com/blogs/alexa/post/36ca7d4c-cd98-40a9-a9c5-0cde2ab922ab/how-alexa-knows-that-peanut-butter-is-one-shopping-list-item-not-two Comments URL: https://news.ycombinator.com/item?id=18706651 Points: 231 # Comments: 139 Tweet

Analyzing Hacker News book suggestions in Python

2018-12-18 15:19:44 @ Hacker News 200

Article URL: https://towardsdatascience.com/hacker-news-book-suggestions-64b88099947 Comments URL: https://news.ycombinator.com/item?id=18706515 Points: 244 # Comments: 56 Tweet

SpaceX Is Raising $500M at a $30.5B Valuation

2018-12-18 15:17:52 @ Hacker News 200

Article URL: https://www.wsj.com/articles/elon-musks-spacex-is-raising-500-million-in-funding-11545142054 Comments URL: https://news.ycombinator.com/item?id=18706506 Points: 538 # Comments: 325 Tweet

Don’t Fuck With a NASA Engineer

2018-12-18 15:06:51 @ Daring Fireball

Mark Rober: Someone stole a package from me. Police wouldn’t do anything about it so I spent the last 6 months engineering up some vigilante justice. Revenge is a dish best served fabulously. This is so good. Also, fart spray is apparently a real thing. Tweet

The Woman Who Gets Called When a Piece of Mars Falls From the Sky

2018-12-18 15:04:54 @ Quanta Magazine

Planetary geologist Meenakshi Wadhwa uses Martian meteorites to trace the history of our solar system. Tweet

Why you should learn F#

2018-12-18 14:28:47 @ Hacker News 200

Article URL: https://dusted.codes/why-you-should-learn-fsharp Comments URL: https://news.ycombinator.com/item?id=18706245 Points: 247 # Comments: 153 Tweet

Glitter bomb tricks parcel thieves

2018-12-18 14:16:46 @ Hacker News 200

Article URL: https://www.bbc.com/news/technology-46604625 Comments URL: https://news.ycombinator.com/item?id=18706193 Points: 887 # Comments: 808 Tweet

Reasons Python Sucks

2018-12-18 14:11:30 @ Hacker News 200

Article URL: https://www.hackerfactor.com/blog/index.php?/archives/825-8-Reasons-Python-Sucks.html Comments URL: https://news.ycombinator.com/item?id=18706174 Points: 376 # Comments: 511 Tweet

Building a Spotify Player for My Mac SE/30

2018-12-18 09:13:50 @ Hacker News 200

Article URL: https://68kmla.org/forums/index.php?/topic/55998-building-a-spotify-player-for-my-mac-se30/ Comments URL: https://news.ycombinator.com/item?id=18705200 Points: 201 # Comments: 37 Tweet

This Week in Rust 265

2018-12-18 06:00:00 @ This Week in Rust

Hello and welcome to another issue of This Week in Rust! Rust is a systems language pursuing the trifecta: safety, concurrency, and speed. This is a weekly summary of its progress and community. Want something mentioned? Tweet us at @ThisWeekInRust or send Tweet

NASA-NOAA satellite tracking Tropical Cyclone Kenanga

2018-12-18 06:00:00 @ Eurekalert

(NASA/Goddard Space Flight Center) Tropical Cyclone Kenanga was at hurricane-force when NASA-NOAA's Suomi NPP satellite grabbed a visible image of the storm in the Southern Indian Ocean on Dec. 18. Tweet

Upwind wind plants can reduce flow to downwind neighbors

2018-12-18 06:00:00 @ Eurekalert

(DOE/National Renewable Energy Laboratory) New National Science Foundation and Department of Energy-funded research highlights a previously unexplored consequence of the global proliferation of wind energy facilities: a wake effect from upwind facilities t Tweet

Research finds rings of Saturn are dying

2018-12-18 06:00:00 @ Eurekalert

(University of Leicester) New research shows Saturn's rings are dying at a worst-case-scenario rate. Tweet

Unique insights into an exotic matter state

2018-12-18 06:00:00 @ Eurekalert

(Kiel University) The properties of the matter, which surrounds us in our everyday life, are typically the result of complex interactions between electrons. However, how matter behaves under extreme conditions is still largely unexplained. A research group Tweet

Mystery of coronae around supermassive black holes deepens

2018-12-18 06:00:00 @ Eurekalert

(RIKEN) Researchers have used observations from the ALMA radio observatory to measure, for the first time, the strength of magnetic fields near two supermassive black holes at the centers of an important type of active galaxies. Surprisingly, the strengths Tweet

Equivalence of State Machines and Coroutines

2018-12-18 05:27:51 @ 250bpm-blogs

[[div style="width:50em"]] by martin_sustrik Tweet

Equivalence of State Machines and Coroutines

2018-12-18 05:27:51 @ Martin Sústri

[[div style="width:50em"]] by martin_sustrik Tweet

Why we should care about the Nate Silver vs. Nassim Taleb Twitter war

2018-12-18 04:45:29 @ Hacker News 200

Article URL: https://towardsdatascience.com/why-you-should-care-about-the-nate-silver-vs-nassim-taleb-twitter-war-a581dce1f5fc Comments URL: https://news.ycombinator.com/item?id=18704376 Points: 308 # Comments: 194 Tweet

Forbes: ‘We Broke Into a Bunch of Android Phones With a 3D-Printed Head’

2018-12-18 04:18:55 @ Daring Fireball

Thomas Brewster commissioned a £300 (roughly $380 USD) 3D-printed copy of his own head: For our tests, we used my own real-life head to register for facial recognition across five phones. An iPhone X and four Android devices: an LG G7 ThinQ, a Samsung S9 Tweet

The Talk Show: ‘Out on Home Video’

2018-12-18 02:21:59 @ Daring Fireball

Matthew Panzarino returns to the show. Topics include recent blockbuster movies, motion smoothing on TVs, iPhone demand rumors, Apple’s Made For iPhone (MFi) program, and more. Recorded live from The Overlook Hotel in Sidewinder, Colorado. Brought to you b Tweet

Dotsies (2012)

2018-12-18 02:16:54 @ Hacker News 200

Article URL: http://dotsies.org/ Comments URL: https://news.ycombinator.com/item?id=18703805 Points: 450 # Comments: 192 Tweet

Alfonso Ribeiro Sues Fortnite and NBA 2K Creators for Stealing His Carlton Dance

2018-12-18 01:28:19 @ Daring Fireball

Did not wake up today thinking I’d be linking to a TMZ story about Alfonso Ribeiro, but here we are. This story feels like 2018 in a nutshell.  ★  Tweet

Swift Tip: Atomic Variables

2018-12-18 01:00:00 @ objc.io

In our Swift Talk backend, we load static data when our app launches. All episodes and collections are loaded from a git repository, before being transformed and made ready to use. When the repository changes we receive a webhook, which we use to reload th Tweet

Belonging: Talks on family, love and loss from the TED World Theater

2018-12-18 00:35:40 @ TED Blog

What does it mean to belong? For many, belonging provides the foundation of all comfort, a sense of conviction that others have your back, that all will be well. But sometimes belonging can be less tangible, more illusory or fleeting — it can disappe Tweet

E2E Testing with Cypress Automation: UI & REST API

2018-12-18 00:04:37 @ Gorilla Logic

In this blog post, I will share my experience about Cypress automation technology. Cypress is an excellent end-to-end automation framework for web applications (Cypress.io: JavaScript End to End Testing Framework); it is written in JavaScript and used for Tweet

[Sponsor] Agenda Adds Images

2018-12-17 23:50:42 @ Daring Fireball

Introducing date-focussed note taking with Agenda, the only Mac app to win a 2018 Apple Design Award. If you never came across a notes app that works for you, Agenda may be the perfect fit. By linking dates to your notes, Agenda helps plan for the future, Tweet

Millitext – A subpixel text encoding font

2018-12-17 23:36:03 @ Hacker News 200

Article URL: https://advent.morr.cc/2018/17 Comments URL: https://news.ycombinator.com/item?id=18702900 Points: 237 # Comments: 55 Tweet

Following an idea to its logical conclusion

2018-12-17 23:00:04 @ The Endeavour

Following an idea to its logical conclusion might be extrapolating a model beyond its valid range. Suppose you have a football field with area A. If you make two parallel sides twice as long, then the area will be 2A. If you double the length of the sides Tweet

Neural Networks as Ordinary Differential Equations

2018-12-17 22:58:37 @ Hacker News 200

Article URL: https://rkevingibson.github.io/blog/neural-networks-as-ordinary-differential-equations/ Comments URL: https://news.ycombinator.com/item?id=18702619 Points: 459 # Comments: 60 Tweet

Kindle edition of Refactoring now available from Amazon

2018-12-17 21:32:00 @ Martin Fowler

Amazon is now selling the Kindle edition of Refactoring. As I write this, it's a touch more expensive than the hardback since they are currently discounting the hardback but not the electronic version. more… Tweet

Show HN: Fancy fonts you can use almost anywhere

2018-12-17 21:14:12 @ Hacker News 200

Article URL: https://beautifuldingbats.com/hey-howd-you-do-that Comments URL: https://news.ycombinator.com/item?id=18701772 Points: 235 # Comments: 160 Tweet

Apple Music Connect, R.I.P.

2018-12-17 21:10:30 @ Daring Fireball

Zac Hall, writing for 9to5Mac: Apple Music Connect appears to slowly be going the way of iTunes Ping. Apple has started notifying Apple Music artists that it is removing the ability for artists to post content to Apple Music Connect, and previously posted Tweet

Boost your infrastructure with the AWS CDK

2018-12-17 20:40:20 @ AWS Blog

This guest post is by AWS Container Hero Philipp Garbe. Philipp works as Lead Platform Engineer at Scout24 in Germany. He is driven by technologies and tools that allow him to release faster and more often. He expects that every commit automatically goes i Tweet

MIPS Goes Open Source

2018-12-17 19:58:26 @ Hacker News 200

Article URL: https://www.eetimes.com/document.asp?doc_id=1334087 Comments URL: https://news.ycombinator.com/item?id=18701145 Points: 498 # Comments: 145 Tweet

Pick the Right Tool for your IT Challenge

2018-12-17 19:36:09 @ AWS Blog

This guest post is by AWS Community Hero Markus Ostertag. As CEO of the Munich-based ad-tech company Team Internet AG, Markus is always trying to find the best ways to leverage the cloud, loves to work with cutting-edge technologies, and is a frequent spea Tweet

Clojure 1.10 release

2018-12-17 18:42:57 @ Hacker News 200

Article URL: https://clojure.org/news/2018/12/17/clojure110 Comments URL: https://news.ycombinator.com/item?id=18700536 Points: 350 # Comments: 91 Tweet

“Ideas That Matter”: A new partnership with CBS This Morning and popular TED speakers

2018-12-17 16:22:10 @ TED Blog

The American news show CBS This Morning and TED announced today that they will collaborate on an ongoing series called “Ideas That Matter.” The monthly series, which launches in January, will invite a TED speaker onto the broadcast to talk with the anchors Tweet

Sobre la supuesta panacea del coche eléctrico, en #Naukas18

2018-12-17 16:14:30 @ brucknerite

Ya llevaba tiempo sin pasar por aquí un trapito, así que me paso para dejar la reseña de mi charla durante el evento Naukas Bilbao 2018 que se celebró durante los pasados días 14 y 15 de septiembre en el Palacio Euskalduna. «¿Pensáis que el coche eléctrico Tweet

Mathematicians Seal Back Door to Breaking RSA Encryption

2018-12-17 16:10:52 @ Quanta Magazine

Digital security depends on the difficulty of factoring large numbers. A new proof shows why one method for breaking digital encryption won’t work. Tweet

Bundles and Packages

2018-12-17 09:00:00 @ NSHipster

In this season of giving, let’s stop to consider one of the greatest gifts given to us by modern computer systems: the gift of abstraction. Tweet

Space telescope detects water in a number of asteroids

2018-12-17 06:00:00 @ Eurekalert

(Kobe University) Using the infrared satellite AKARI, a Japanese research team has detected the existence of water in the form of hydrated minerals in a number of asteroids for the first time. This discovery will contribute to our understanding of the dist Tweet

Fossil from the Big Bang discovered with W. M. Keck Observatory

2018-12-17 06:00:00 @ Eurekalert

(W. M. Keck Observatory) A relic cloud of gas, orphaned after the Big Bang, has been discovered in the distant universe by astronomers using the world's most powerful optical telescope, the W. M. Keck Observatory on Maunakea, Hawaii. Tweet

NASA's Aqua and GPM satellites examine Tropical Cyclone Kenanga

2018-12-17 06:00:00 @ Eurekalert

(NASA/Goddard Space Flight Center) On December 16 and 17, NASA's GPM core observatory satellite and NASA's Aqua satellite, respectively, passed over the Southern Indian Ocean and captured rainfall and temperature data on Tropical Cyclone Kenanga. Tweet

NASA finds tiny remnants of Tropical Cyclone Owen

2018-12-17 06:00:00 @ Eurekalert

(NASA/Goddard Space Flight Center) Tropical Cyclone Owen crossed over Queensland Australia's Cape York Peninsula over the weekend of Dec. 15 and 16 and emerged into the Coral Sea off of Queensland's southeastern coast. NASA's Terra satellite provided an in Tweet

NASA catches India landfall of Tropical Depression Phethai

2018-12-17 06:00:00 @ Eurekalert

(NASA/Goddard Space Flight Center) NASA's Aqua satellite passed over the Northwestern Indian Ocean and captured a visible image of Tropical Depression Phethai after it made landfall in southeastern India. Tweet

NASA research reveals Saturn is losing its rings at 'worst-case-scenario' rate

2018-12-17 06:00:00 @ Eurekalert

(NASA/Goddard Space Flight Center) New NASA research confirms that Saturn is losing its iconic rings at the maximum rate estimated from Voyager 1 and 2 observations made decades ago. The rings are being pulled into Saturn by gravity as a dusty rain of ice Tweet

Discovered: The most-distant solar system object ever observed

2018-12-17 06:00:00 @ Eurekalert

(Carnegie Institution for Science) A team of astronomers has discovered the most-distant body ever observed in our solar system. It is the first known solar system object that has been detected at a distance that is more than 100 times farther than Earth Tweet

Alien imposters: Planets with oxygen don't necessarily have life

2018-12-17 06:00:00 @ Eurekalert

(Johns Hopkins University) Lab simulations nix the common wisdom that atmospheric oxygen and organic compounds are good evidence that a planet harbors life. Tweet

A method to monitor indoor crop health no matter what planet you're on

2018-12-17 06:00:00 @ Eurekalert

(Botanical Society of America) Scientists at the University of Florida Space Plants Lab are using the single-image normalized difference vegetation index (SI-NDVI), a popular metric of plant health and photosynthetic rate originally developed for satellite Tweet

MuSCAT2 to find Earth-like planets in the TESS era

2018-12-17 06:00:00 @ Eurekalert

(National Institutes of Natural Sciences) A Japan-Spain team has developed a powerful 4-color simultaneous camera named MuSCAT2 for the 1.52-m Telescopio Carlos Sánchez at the Teide Observatory, Canaries, Spain. The instrument aims to find a large number o Tweet

Narrowing the universe in the search for life

2018-12-17 06:00:00 @ Eurekalert

(Ohio State University) In the search for life on other planets, scientists traditionally have looked for a world with water. But an Ohio State geophysicist wonders if we should look to rocks instead. Tweet

Technological optimism

2018-12-17 02:42:37 @ The Endeavour

Kevin Kelly is one of the most optimistic people writing about technology, but there’s a nuance to his optimism that isn’t widely appreciated. Kelly sees technological progress as steady and inevitable, but not monotone. He has often said that Tweet

Guest post: Join SIGACT!

2018-12-16 22:24:00 @ Computational Complexity

This is a guest post by Samir Khuller and Robert Kleinberg. Dear friends, As our research community continues to grow and thrive, SIGACT membership has not grown apace. We respectfully urge you to join SIGACT! Membership is very cheap (and does not requi Tweet

Mi charla en Desgranando Ciencia 2018: “50 años de la teoría de cuerdas”

2018-12-16 20:03:22 @ La Ciencia de la Mula Francis

“El día oficial del nacimiento de la teoría de cuerdas es el 01 de septiembre de 1968”. Así empezó mi charla “50 años de la teoría de cuerdas” en Desgranando Ciencia […] La entrada Mi charla en Desgranando Ciencia 2018: “50 añ Tweet

Linkage

2018-12-15 17:21:00 @ 0xDE

This is my penultimate link roundup before I give up on Google+, rather than holding out for its rapidly-approaching demise. Tweet

Last Call on This Round of DF T-Shirts and Hoodies

2018-12-15 04:44:58 @ Daring Fireball

Just a few hours left before I shut down the ordering page so we can start printing. We’ll start shipping them out on Monday or Tuesday.  ★  Tweet

Explaining The Jaccard Metric

2018-12-15 02:27:23 @ Gödel's Lost Letter and P=NP

Why is it a metric? Composite of source 1, source 2 Paul Jaccard was a botanist who worked at ETH in Zurich during much of the first half of the 20th century. He created, or discovered, the similarity notion that became the Jaccard metric. Very neat having Tweet

Outlier

2018-12-15 02:23:59 @ Daring Fireball

My thanks to Outlier for sponsoring this week at DF. Outlier makes hardcore quality clothing, with obsessively sourced raw materials. Their clothes are designed for performance, durability, and movement. They are, simply, excellent. Outlier has sponsored D Tweet

Apple Music Now Live on Amazon Echo Speakers

2018-12-15 01:21:47 @ Daring Fireball

Zac Hall, writing for 9to5Mac: Apple Music support on Amazon Echo speakers is starting to roll out in the United States through the Alexa app on iOS and Android a few days ahead of schedule. You can now connect your Apple Music account with Echo speakers Tweet

All Basecamp policies are now on GitHub and licensed under creative commons

2018-12-14 23:21:08 @ Signal vs. Noise

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The Chase Jarvis Live show

2018-12-14 21:06:56 @ Signal vs. Noise

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iOS Dev Weekly - Issue 382 - Dec 14th 2018

2018-12-14 20:23:07 @ iOS Weekly

Comment Just a quick heads up before we get started with the links this week, I'm going to be launching an iOS developer job board in January. 📆 I've been thinking about running an iOS jobs site for a long time, and Tweet

Applied Category Theory Seminar

2018-12-14 20:05:36 @ John Carlos Baez

We’re going to have a seminar on applied category theory here at U. C. Riverside! My students have been thinking hard about category theory for a few years, but they’ve decided it’s time to get deeper into applications. Christian Williams Tweet

Applied Category Theory Seminar

2018-12-14 20:05:36 @ Physics Phorums

We’re going to have a seminar on applied category theory here at U. C. Riverside! My students have been thinking hard about category theory for a few years, but they’ve decided it’s time to get deeper into applications. Christian Williams Tweet

Don’t ask what science can do for you.

2018-12-14 17:23:00 @ Backreaction

Among the more peculiar side-effects of publishing a book are the many people who suddenly recall we once met. There are weird fellows who write to say they mulled ten years over a single sentence I once spoke with them. There are awkward close-encount Tweet

Don’t ask what science can do for you.

2018-12-14 17:23:00 @ Sabine Hossenfelder

Among the more peculiar side-effects of publishing a book are the many people who suddenly recall we once met. There are weird fellows who write to say they mulled ten years over a single sentence I once spoke with them. There are awkward close-encount Tweet

The Apache News Round-up: week ending 14 December 2018

2018-12-14 16:55:38 @ ASF

Happy Friday! Let's review what the Apache community has been up to over the past week: Support Apache –help keep Apache software for everyone. - Two weeks remain to make a tax-deductible donation to the ASF in 2018! 750+ generous contributor Tweet

TAPAS: Frugally Predicting the Accuracy of a Neural Network Prior to Training

2018-12-14 12:00:35 @ IBM Research blog

Constructing a neural network model for each new dataset is the ultimate nightmare for every data scientist. What if you could forecast the accuracy of the neural network earlier thanks to accumulated experience and approximation? This was the goal of a re Tweet

Starting a Startup After Business School – Reham Fagiri and Kalam Dennis of AptDeco

2018-12-14 11:15:43 @ YC

Reham Fagiri and Kalam Dennis are the founders of AptDeco, where you can buy and sell used furniture. They were in the YC Winter 2014 batch and you can find them at AptDeco.com. Tweet

NASA-NOAA's satellite tracks a stronger Tropical Cyclone Owen nearing landfall

2018-12-14 06:00:00 @ Eurekalert

(NASA/Goddard Space Flight Center) Tropical Cyclone Owen continued to strengthen as it moved east through the Gulf of Carpentaria and toward a landfall in western Queensland, Australia. NASA-NOAA's Suomi NPP satellite provided a visible image of the storm. Tweet

Carnegie's Miguel Roth receives highest civilian honor for non-Chilean

2018-12-14 06:00:00 @ Eurekalert

(Carnegie Institution for Science) Miguel Roth, director of Carnegie's Las Campanas Observatory in Chile from 1990 to 2014 and the current representative of the Giant Magellan Telescope Organization (GMTO) in Chile was awarded the Bernardo O'Higgins Order Tweet

Quantum chemical calculations on quantum computers

2018-12-14 06:00:00 @ Eurekalert

(Osaka City University) A new quantum algorithm has been implemented for quantum chemical calculations such as Full-CI on quantum computers without exponential/combinatorial explosion, giving exact solutions of Schroedinger Equations for atoms and molecule Tweet

A young star caught forming like a planet

2018-12-14 06:00:00 @ Eurekalert

(University of Leeds) Astronomers have captured one of the most detailed views of a young star taken to date, and revealed an unexpected companion in orbit around it. Tweet

Issue #61

2018-12-14 01:00:00 @ WASM Weekly

Reflecting on Rust and WebAssembly in 2018 GITHUB.IO The Rust community have been right behind WebAssembly from the very start. There are clear synergies between the two, with the hope that WebAssembly can further fuel the rise in popularity of Rust. This Tweet

Mac App Analytics Now Available in App Store Connect

2018-12-13 21:00:00 @ Apple Developer News and Updates

Your app data from the new Mac App Store on macOS Mojave is now available in App Store Connect. Now you can find out how many times your app was seen on the Mac App Store, how many times your product page was viewed, and how many new customers downloaded y Tweet

Using AWS AI and Amazon Sumerian in IT Education

2018-12-13 20:10:28 @ AWS Blog

This guest post is by AWS Machine Learning Hero, Cyrus Wong. Cyrus is a Data Scientist at the Hong Kong Institute of Vocational Education (Lee Wai Lee) Cloud Innovation Centre. He has achieved all nine AWS Certifications and enjoys sharing his AWS knowledg Tweet

Localize Your Product Page in More Languages

2018-12-13 20:00:00 @ Apple Developer News and Updates

You can now provide localized metadata for your App Store product page in any of the following languages when you submit a new version of your app: Catalan, Croatian, Czech, Hindi, Hungarian, Polish, Romanian, Slovak, and Ukrainian.Learn how to make the mo Tweet

New Studies Rescue Gravitational-Wave Signal From the Noise

2018-12-13 16:20:13 @ Quanta Magazine

Two independent papers vanquish lingering doubts about LIGO’s historic discovery of gravitational waves. Tweet

Inverting Onto Functions

2018-12-13 15:53:00 @ Computational Complexity

Here's an open question that goes back to a 2003 paper  that I wrote with Steve Fenner, John Rogers and Ashish Naik. The conference paper goes back to 1996. In that paper we discuss two hypothesis we badly called Q and Q' and it still remains open wh Tweet

AI Year in Review: Highlights of Papers and Predictions from IBM Research AI

2018-12-13 13:00:22 @ IBM Research blog

For more than seventy years, IBM Research has been inventing, exploring, and imagining the future. We have been pioneering the field of artificial intelligence (AI) since its inception. We were there when the field was launched at the famous 1956 Dartmouth Tweet

RSA with Pseudoprimes

2018-12-13 12:00:02 @ The Endeavour

RSA setup Recall the setup for RSA encryption given in the previous post. Select two very large prime numbers p and q. Compute n = pq and φ(n) = (p – 1)(q – 1). Choose an encryption key e relatively prime to φ(n). Calculate the decryption key d such that e Tweet

New experiment cannot reproduce long-standing dark matter anomaly

2018-12-13 08:38:00 @ Backreaction

Close-up of the COSINE detector  [Credits: COSINE collaboration] To correctly fit observations, physicists’ best current theory for the universe needs a new type of matter, the so-called “dark matter.” According to this theory, our galaxy – as most othe Tweet

New experiment cannot reproduce long-standing dark matter anomaly

2018-12-13 08:38:00 @ Sabine Hossenfelder

Close-up of the COSINE detector  [Credits: COSINE collaboration] To correctly fit observations, physicists’ best current theory for the universe needs a new type of matter, the so-called “dark matter.” According to this theory, our galaxy – as most othe Tweet

In search of missing worlds, Hubble finds a fast evaporating exoplanet

2018-12-13 06:00:00 @ Eurekalert

(NASA/Goddard Space Flight Center) Now, astronomers have used Hubble to nab a second 'very warm' Neptune (GJ 3470b) that is losing its atmosphere at a rate 100 times faster than that of GJ 436b. Both planets reside about 3.7 million miles from their star. Tweet

Hubble finds far-away planet vanishing at record speed

2018-12-13 06:00:00 @ Eurekalert

(Johns Hopkins University) In their quest to learn more about faraway planets, astronomers discovered that a medium-sized planet roughly the size of Neptune is evaporating at a rate 100 times faster than a previously discovered planet of similar size. Tweet

Tangled magnetic fields power cosmic particle accelerators

2018-12-13 06:00:00 @ Eurekalert

(DOE/SLAC National Accelerator Laboratory) Magnetic field lines tangled like spaghetti in a bowl might be behind the most powerful particle accelerators in the universe. That's the result of a new computational study by researchers from the Department of E Tweet

Swift Tip: Stable APIs on the Server

2018-12-13 01:00:00 @ objc.io

In our Swift Talk backend, one of the endpoints we have to support is a JSON API. Other apps, such as our main website and our unreleased tvOS app, expect the JSON to be in a specific format. Importantly, this format shouldn’t change over time (except for Tweet

Reminder: DF T-Shirts and New Hoodies

2018-12-12 22:54:22 @ Daring Fireball

Just a reminder: we’re taking orders on these items, but only through the end of this week. We’ve even got brand-new DF logo stickers we’ll include with each order, including 1-inch circles that should look nice on an AirPods case. &nb Tweet

Algoriddim: ‘Why We’re Moving to Subscriptions’

2018-12-12 22:40:06 @ Daring Fireball

Algoriddim: After more than 8 years as a paid-for app, djay for iOS is changing. With the latest release, we are now offering a single universal app as a free download which offers everything you need to DJ, along with an affordable new monthly Pro subscr Tweet

Optional OmniFocus Subscriptions

2018-12-12 22:32:03 @ Daring Fireball

Ken Case, co-founder of The Omni Group: We think our current licensing model meets a lot of needs, and we will continue to offer this model for licensing our apps: we prefer for customers to view our apps as an investment, not an expense. But our current Tweet

Washington Post Story on Apple’s Product Prices

2018-12-12 22:22:22 @ Daring Fireball

Geoffrey Fowler and Andrew Van Dam, writing for The Washington Post: Apple this year became a trillion-dollar company. But it also became the thousand-dollar company: Suddenly you need at least 10 Benjamins to get the best new iPhone or the big iPad Pro. Tweet

Three Things to Take Away From re:Invent 2018

2018-12-12 19:10:22 @ tecosystems

To properly digest and summarize Amazon’s annual re:Invent show would take months and a novel’s wordcount, which is impractical not least because said summary would be rendered obsolete long before it was published. Instead of attempting to doc Tweet

Three Things to Take Away From re:Invent 2018

2018-12-12 19:10:22 @ Sogrady

To properly digest and summarize Amazon’s annual re:Invent show would take months and a novel’s wordcount, which is impractical not least because said summary would be rendered obsolete long before it was published. Instead of attempting to doc Tweet

Can I have the last four digits of your social?

2018-12-12 17:27:46 @ The Endeavour

Imagine this conversation. “Could you tell me your social security number?” “Absolutely not! That’s private.” “OK, how about just the last four digits?” “Oh, OK. That’s fine.” When I was in colleg Tweet

A ‘Self-Aware’ Fish Raises Doubts About a Cognitive Test

2018-12-12 16:27:24 @ Quanta Magazine

A report that a fish can pass the “mirror test” for self-awareness reignites debates about how to define and measure that elusive quality. Tweet

Could AI Help People Change Their Behaviour?

2018-12-12 15:00:41 @ IBM Research blog

Throughout life, many of us develop unhealthy habits that may feel nearly impossible to change. To quit smoking, reduce alcohol consumption, eat a healthier diet, or become more physically active requires effort and the right state of mind. A team of behav Tweet