background preloader


Facebook Twitter

Azimuth. A Tour of Machine Learning Algorithms. Originally published by Jason Brownlee in 2013, it still is a goldmine for all machine learning professionals.

A Tour of Machine Learning Algorithms

The algorithms are broken down in several categories. Here we provide a high-level summary, a much longer and detailed version can be found here. You can even download an algorithm map from the original article. Below is a much smaller version. Problem Book in Relativity and Gravitation. Beloved by a generation of students of General Relativity, the Problem Book in Relativity and Gravitation, by Alan P.

Problem Book in Relativity and Gravitation

Física de la materia condensada. Spivak_physics.pdf. What IS Angular Momentum? Physicists achieve superconductivity at room temperature. Medical scientists have developed a new chemical compound that’s been shown to treat spinal cord injuries of 80 percent of the animals it was tested on.

Physicists achieve superconductivity at room temperature

The compound, which they’re calling intracellular sigma peptide (ISP), was tested on 26 animals who were paralysed due to a spinal cord injury - and in 21 cases the animals were able to urinate, move, or both after seven weeks of treatment. "This recovery is unprecedented," said neuroscientist Jerry Silver from Case Western Reserve University, who led the research, in a press release. "Each of the 21 animals got something back in terms of function. For any spinal cord-injured patient today, it would be considered extraordinary to regain even one of these functions, especially bladder function. After a spinal cord injury, people become paralysed as a result of scar tissue that builds up and stops nerve cells from connecting with each other. Currently there are no drugs available to help undo this damage.

¿Qué es el Science Hack Day? El Science Hack Day es un evento en el que muchas personas que tengan gusto por la ciencia y por construir cosas raras, divertidas o serias se reúnen en un mismo lugar para intercambiar conocimiento y cosmovisiones, con el fin de ver qué se puede prototipar a lo largo de 24 horas seguidas.

¿Qué es el Science Hack Day?

Diseñadores, desarrolladores, científicos y cualquier persona que quiera construir cosas relacionadas con la ciencia son bienvenidos – no se necesita tener experiencia en hacking o en ciencia, sólo se necesita tener una curiosidad insaciable. Discover Magazine: The latest in science and technology news, blogs and articles. Kurzweil Accelerating Intelligence. Tyler DeWitt: Hey profesores de ciencias, háganlo divertido. Fill in the Blanks: Using Math to Turn Lo-Res Datasets Into Hi-Res Samples.

Using a mathematical concept called sparsity, the compressed-sensing algorithm takes lo-res files and transforms them into sharp images.

Fill in the Blanks: Using Math to Turn Lo-Res Datasets Into Hi-Res Samples

Illustration: Gabriel Peyre In the early spring of 2009, a team of doctors at the Lucile Packard Children’s Hospital at Stanford University lifted a 2-year-old into an MRI scanner. The boy, whom I’ll call Bryce, looked tiny and forlorn inside the cavernous metal device. The stuffed monkey dangling from the entrance to the scanner did little to cheer up the scene.

How Airplanes Fly. Please let me remind all of you--this material is copyrighted.

How Airplanes Fly

Though partially funded by NASA, it is still a private site. Therefore, before using our materials in any form, electronic or otherwise, you need to ask permission. There are two ways to browse the site: (1) use the search button above to find specific materials using keywords; or, (2) go to specific headings like history, principles or careers at specific levels above and click on the button. Teachers may go directly to the Teachers' Guide from the For Teachers button above or site browse as in (1) and (2). ¿Qué son los ejercicios de Kegel? Introduction to Quantum Mechanics. Why Nikola Tesla was the greatest geek who ever lived. Additional notes from the author: If you want to learn more about Tesla, I highly recommend reading Tesla: Man Out of Time Also, this Badass of the week by Ben Thompson is what originally inspired me to write a comic about Tesla.

Why Nikola Tesla was the greatest geek who ever lived

Ben's also got a book out which is packed full of awesome. There's an old movie from the 80s on Netflix Instant Queue right now about Tesla: The Secret of Nikola Tesla. Gravedad Cuántica de Lazos, la prima fea de la gravedad cuántica. La gravedad cuántica es la hipotética teoría que combinaría en un único esquema conceptual los principios de la mecánica cuántica con la teoría gravitatoria.

Gravedad Cuántica de Lazos, la prima fea de la gravedad cuántica.

Desde los inicios de la mecánica cuántica, sobre los años 20 del pasado siglo, los científicos se han preguntado cómo se incorporan las ideas cuánticas en la teoría de la gravedad. A día de hoy no hay una teoría confirmada que lo haya logrado. Pdf/1205.2024.pdf. 4395741_700b_v1.jpg (700×5426) Where do Supermassive Black Holes Come From? “Black holes, which have no memory, are said to contain the earliest memories of the universe, and the most recent, too, while at the same time obliterating all memory by obliterating all its embodiments.

Where do Supermassive Black Holes Come From?

Such paradoxes characterize these strange galactic monsters, for whom creation is destruction, death life, chaos order.” -Robert Coover.


Einstein Archives Online. Making Science Visible.