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The bacteria that turns water into ice. Meet Pseudomonas syringae, a bacterium that causes disease in plants and helps make snow machines work.

The bacteria that turns water into ice

Supercooled Helium Does Things That Don't Seem Possible. We all know helium as a gas for blowing up balloons and making people talk like chipmunks.

Supercooled Helium Does Things That Don't Seem Possible

It's also incredibly important as a coolant for medical devices and scientific instrumentation. However, what is less known is that helium has two different liquid states, one of which is truly strange, bordering on creepy. Pokemon Artificial Intelligence Is Smarter Than You. Jellyfish are the most energy-efficient swimmers, new metric confirms. When a man is tired of London house prices. ‘Since Londoners cannot seem to stop asking, “Is there a bubble?”

When a man is tired of London house prices

, I’ve been trying to figure out the answer’ I predicted the UK house price slump of 2007. I was even planning to devote an episode of my BBC2 series to the subject back in 2006, until my producers demanded a different topic. They argued that house prices would assuredly keep rising, so I would seem silly. The replacement theme was “It’s hard to predict the future”; prices duly fell by 15 per cent in real terms. The economics of apologies. Apologies are often hard – that’s the point.

The economics of apologies

An apology is due when trust is broken, and to restore trust the apology must be hard. This column discusses a model of apologies as costly signals with some recent experimental evidence. What Most Freaks Out Scholars Who Study The Future Of Humanity? How Does "Valence" Help Your Brain Distinguish Between Good And Bad? How to Read Body Language More Effectively. IBM's Watson Can Now Debate Its Opponents. "It's important to note, however, that Watson doesn't actually understand the content" But then, do we even, really?

IBM's Watson Can Now Debate Its Opponents

IBM's Watson Can Now Debate Its Opponents. Chomsky on Zizek and Lacan. 2048 - Hard. Cubic Curve Calculator. A Rough Guide to Spotting Bad Science. Click to enlarge A brief detour from chemistry, branching out into science in general today.

A Rough Guide to Spotting Bad Science

This graphic looks at the different factors that can contribute towards ‘bad’ science – it was inspired by the research I carried out for the recent aluminium chlorohydrate graphic, where many articles linked the compound to causing breast cancer, referencing scientific research which drew questionable conclusions from their results. The vast majority of people will get their science news from online news site articles, and rarely delve into the research that the article is based on. Scientists Discover New Shape When Playing With Rubber Bands. What do you yet when you cross a rubber band with an octopus?

Scientists Discover New Shape When Playing With Rubber Bands

A whole new shape, it turns out, with perversions. The Harvard researchers who made the discovery were seeking to make springs. They glued two strips of uneven length together and stretched them out while clipped at each end with strings thin enough that the strips could rotate freely. As the force stretching the strips out decreased the strips started to wind up like a telephone cord (ask someone over 30).

While the new shape resembles a double helix the team noticed it had what they call perversions (see image above). Mantis Shrimp-Inspired Material is Stronger than Airplanes. The mighty, mighty mantis shrimp is a colorful and fearsome predator that can smash its opponent (and aquariums walls) to pieces using its arms that are covered with hard exoskeleton.

Mantis Shrimp-Inspired Material is Stronger than Airplanes

Researchers hoping to harness its power have now created a material that’s stronger than what’s used in airplane frames. The Great Filter. Sept. 15, 1998 by Robin Hanson Humanity seems to have a bright future, i.e., a non-trivial chance of expanding to fill the universe with lasting life.

The Great Filter

But the fact that space near us seems dead now tells us that any given piece of dead matter faces an astronomically low chance of begating such a future. There thus exists a great filter between death and expanding lasting life, and humanity faces the ominous question: how far along this filter are we? Combining standard stories of biologists, astronomers, physicists, and social scientists would lead us to expect a much smaller filter than we observe. Lab gets funding to put 3D goggles on praying mantises. It sounds like the kind of research project that a future a Congressman might hold up as an example of wasteful government spending: gluing a praying mantis to a stick and putting mini-3D goggles on it.

Lab gets funding to put 3D goggles on praying mantises

But this project is very real and pretty neat, and it should actually tell us something about neurobiology. Symbol addition by monkeys provides evidence for normalized quantity coding. Author Affiliations Edited* by Jon H. Kaas, Vanderbilt University, Nashville, TN, and approved March 28, 2014 (received for review March 4, 2014) Significance. Kevlar. Un article de Wikipédia, l'encyclopédie libre. New Study Outlines 'Water World' Theory of Life's Origins. Music information retrieval. Music information retrieval (MIR) is the interdisciplinary science of retrieving information from music. MIR is a small but growing field of research with many real-world applications.

Those involved in MIR may have a background in musicology, psychology, academic music study, signal processing, machine learning or some combination of these. Applications of MIR[edit] MIR is being used by businesses and academics to categorize, manipulate and even create music. Recommender systems[edit] Several recommender systems for music already exist, but surprisingly few are based upon MIR techniques, instead making use of similarity between users or laborious data compilation. Track separation and instrument recognition[edit] Track separation is about extracting the original tracks as recorded, which could have more than one instrument played per track.

Automatic music transcription[edit] Mel-frequency cepstrum. In sound processing, the mel-frequency cepstrum (MFC) is a representation of the short-term power spectrum of a sound, based on a linear cosine transform of a log power spectrum on a nonlinear mel scale of frequency. Mel-frequency cepstral coefficients (MFCCs) are coefficients that collectively make up an MFC. They are derived from a type of cepstral representation of the audio clip (a nonlinear "spectrum-of-a-spectrum"). The difference between the cepstrum and the mel-frequency cepstrum is that in the MFC, the frequency bands are equally spaced on the mel scale, which approximates the human auditory system's response more closely than the linearly-spaced frequency bands used in the normal cepstrum.

This frequency warping can allow for better representation of sound, for example, in audio compression. MFCCs are commonly derived as follows:[1][2] The European Telecommunications Standards Institute in the early 2000s defined a standardised MFCC algorithm to be used in mobile phones.[5] Mel scale. Plots of pitch mel scale versus Hertz scale. v5.pdf. Approximate string matching.

Overview[edit] The closeness of a match is measured in terms of the number of primitive operations necessary to convert the string into an exact match. This number is called the edit distance between the string and the pattern. Mesh networking. Self-Learning Helicopter Uses Neural Network. Coursera's Android App Allows You to Download Lectures For Mobile Use. Forensic Scientists Build Crude 3D Mugshots From DNA. DNA evidence was first used to help solve crimes in 1986, but it didn’t hit the main stage of the public’s attention until it was used in OJ Simpson’s murder trial in 1994.

Dying to Live: Terrorism, War, and Defending One's Way of Life by Kenneth Vail, Matt Motyl, Abdolhossein Abdollahi, Tom Pyszczynski. Kenneth Vail III University of Missouri at Columbia. The first official "chaos machine" is easy to make. Did Life On Earth As We Know It Come From ‘Geological Life’? Want to stay on top of all the space news? Follow @universetoday on Twitter. 17 Equations That Changed The World. The smartphone app that could rescue the world's plankton. Phytoplankton are the microscopic plant-like cells that float in the sea’s sunlit surface. Life. College - Experience it Firsthand. In September 2013, Berry’s original bald eagle couple was once again seen on the Berry College campus in the vicinity of the nest in a tall pine tree situated between the main entrance and the parking lot of the Steven J.

Cage Athletic and Recreation Center. The couple spent several months repairing and adding to the nest and catching fish and coots in the nearby Berry quarry, Oostanaula River and Garden Lakes in Rome. An egg was produced on January 14, 2014, followed by a second egg on January 17. [1210.1847] Constraints on the Universe as a Numerical Simulation. Is the Universe a Simulation? Photo Gray Matter. Global Forest Watch. How Science Turned a Struggling Pro Skier Into an Olympic Medal Contender - Wired Science. Steven Nyman is poised at the starting gate, alert, coiled, ready. Self-Assembling Molecules Like These May Have Sparked Life on Earth - Wired Science. Urban Computing Reveals the Hidden City. Why strange loops could be an argument for artificial intelligence. Shepard tone. Shepard Tone: l'arme secrète de Ricardo Villalobos dévoilée. Shepard Tone: l'arme secrète de Ricardo Villalobos dévoilée. Gamme de Shepard. Shepard Tone. Shepard Tone. Genes, Macromolecules, -&- Computing: Strange loops in biology.

Strange Loop. Why strange loops could be an argument for artificial intelligence. Nuclear fusion hits energy milestone - Technology & Science. Systematic network lesioning reveals the core white matter scaffold of the human brain. The First Map Showing All the Connections in Your Brain's White Matter. Miniature bouncing tennis balls reveal cellular interiors. The Difference Between Knowledge and Experience.

Tableau Périodique Dynamique - Compound. Elliptic curve. A (Relatively Easy To Understand) Primer on Elliptic Curve Cryptography. Two Generals' Problem. Making Makers. Massive Open Lab gets volunteers to beat computers in designing RNA. Gamers beat algorithms at finding protein structures. Evolution vs Natural Selection.

The Infinite Hotel Paradox - Jeff Dekofsky. BAHFest 2013 - Tomer Ullman: The Crying Game. A New Scientific Model that Defines Alien Intelligence. How Skynet Might Emerge From Simple Physics. Physicist proposes a thermodynamic explanation for the origins of life. Visualization of Narrative. Scientists watch glowing molecules form memories in real time. Google acquires AI pioneer DeepMind Technologies. One of the strangest animals on earth gets a little weirder. 50 of the Best Online Courses and Resources for Learning Web Design. Latest Data Shows Global Climate Continues Warming Trend.

Notification : stratégie - filtrage des URL. Chemical process turns any plant matter—even trees—into biofuels. Mill, Principles of Political Economy. Giant laser could arrange particles into enormous space telescope. Giant laser could arrange particles into enormous space telescope. Three arguments about climate change that should never be used. Amelia Earhart: Breaking Barriers of Earth and Sky. Lexical Distance Among the Languages of Europe « Etymologikon™ CountryData—Wolfram Language Documentation.

Language & System Documentation Center. Sophisme. Fuzzy-trace theory. Academic Publications by Stephen Wolfram. The Nature of Code. Cellular automaton. Automate cellulaire.