Romper los bloqueos mentales es crítico para el trabajo creativo. No sabemos muy bien cómo ni porqué pero nuestra mente se bloquea. No tenemos ideas, no avanzamos en las conclusiones, siempre giramos entorno a los mismos conceptos sin llegar a ningún sitio, o incluso nos quedamos totalmente en blanco sin saber muy bien que hacer.
How To Be A Better Leader By Rewiring Your Brain Inc.com Controlling the way your brain responds to emotions isn't as complicated as it sounds. A psychologist explains the steps that will change your behavior.
La británica Universidad de Bedfordshire ha anunciado que uno de sus profesores, experto en lingüística aplicada, ha conseguido descifrar diez palabras del manuscrito de Voynich, un libro del siglo XV considerado como «el más misterioso» del mundo y que, hasta ahora, resultaba un auténtico galimatías al que nadie encontraba sentido, hasta el punto de que ha llegado a ser tachado de fraude.
El manuscrito de renombre mundial está lleno de ilustraciones de plantas exóticas, estrellas y figuras humanas misteriosas, además de muchas páginas escritas en un idioma desconocido. Hasta ahora la obra ha desconcertado a estudiosos y criptógrafos. Se han propuesto las más distintas teorías sobre su autoría. Algunos sugieren que la obra está relacionada con Leonardo da Vinci, los cátaros, la tribu perdida de Israel o los aztecas... Incluso se ha llegado a proclamar la disparatada idea de que fue escrita por extraterrestres.
FACUA-Consumidores en Acción informa de que el Ministerio de Industria, Energía y Turismo ha subido en febrero un 17,9% el término de potencia y ha bajado un 6,9% el de energía eléctrica en las tarifas que desde el mes pasado denomina Precios Voluntarios para el Pequeño Consumidor, sustituyendo a la Tarifa de Último Recurso (TUR).
Nacho Vega's insight:
Consumidores en Acción informa de que el Ministerio de Industria, Energía y Turismo ha subido en febrero un 17,9% el término de potencia y ha bajado un 6,9% el de energía eléctrica en las tarifas que desde el mes pasado denomina Precios Voluntarios para el Pequeño Consumidor, sustituyendo a la Tarifa de Último Recurso (TUR).
Infografía con 10 cosas que están pasando o pasarán en el mercado laboral. Una realidad que hemos comenzado a experimentar en el mundo difuso, evolutivo, incierto y caótico en el que nos encontramos actualmente...
As professional content curators, creators, and promoters, we've all heard about the importance of Google Authorship, and know that, somehow, it does have more benefits than just causing our beautiful faces to show up in search results next to content we've published.
Nacho Vega's insight:
"Google Authorship allows you to claim ownership of what you publish on the Internet by linking it to your G+ profile."
"The Wellcome Library recently made more than 100,000 drawings, photographs, paintings, and advertisements available to the world under Creative Commons licensing. The images available through the Wellcome Images library are primarily of a historic nature. You can browse the galleries or search for images by keyword."
Physicist explored the idea of a steady-state Universe in 1931.
The Big Bang theory had found observational support in the 1920s, when US astronomer Edwin Hubble and others discovered that distant galaxies are moving away and that space itself is expanding. This seemed to imply that, in the past, the contents of the observable Universe had been a very dense and hot ‘primordial broth’.
But, from the late 1940s, Hoyle argued that space could be expanding eternally and keeping a roughly constant density. It could do this by continually adding new matter, with elementary particles spontaneously popping up from space, Hoyle said. Particles would then coalesce to form galaxies and stars, and these would appear at just the right rate to take up the extra room created by the expansion of space. Hoyle’s Universe was always infinite, so its size did not change as it expanded. It was in a ‘steady state’.
The newly uncovered document shows that Einstein had described essentially the same idea much earlier. “For the density to remain constant new particles of matter must be continually formed,” he writes. The manuscript is thought to have been produced during a trip to California in 1931 — in part because it was written on American note paper.
It had been stored in plain sight at the Albert Einstein Archives in Jerusalem — and is freely available to view on its website — but had been mistakenly classified as a first draft of another Einstein paper. Cormac O’Raifeartaigh, a physicist at the Waterford Institute of Technology in Ireland, says that he “almost fell out of his chair” when he realized what the manuscript was about. He and his collaborators have posted their findings, together with an English translation of Einstein’s original German manuscript, on the arXiv preprint server (C. O’Raifeartaigh et al. Preprint at http://arxiv.org/abs/1402.0132; 2014) and have submitted their paper to the European Physical Journal.
“This finding confirms that Hoyle was not a crank,” says study co-author Simon Mitton, a science historian at the University of Cambridge, UK, who wrote the 2005 biography Fred Hoyle: A Life in Science. The mere fact that Einstein had toyed with a steady-state model could have lent Hoyle more credibility as he engaged the physics community in a debate on the subject. “If only Hoyle had known, he would certainly have used it to punch his opponents,” O’Raifeartaigh says.
Although Hoyle’s model was eventually ruled out by astronomical observations, it was at least mathematically consistent, tweaking the equations of Einstein’s general theory of relativity to provide a possible mechanism for the spontaneous generation of matter. Einstein’s unpublished manuscript suggests that, at first, he believed that such a mechanism could arise from his original theory without modification. But then he realized that he had made a mistake in his calculations, O’Raifeartaigh and his team suggest. When he corrected it — crossing out a number with a pen of a different colour — he probably decided that the idea would not work and set it aside.
The famed protein chain reaction that made mad cow disease a terror may be involved in helping to ensure that our recollections don't fade.
Prions are proteins with two unusual properties: First, they can switch between two possible shapes, one that is stable on its own and an alternate conformation that can form chains. Second, the chain-forming version has to be able to trigger others to change shape and join the chain. Say that in the normal version the protein is folded so that one portion of the protein structure—call it "tab A"—fits into its own "slot B." In the alternate form, though, tab A is available to fit into its neighbor's slot B. That means the neighbor can do the same thing to the next protein to come along, forming a chain or clump that can grow indefinitely.
For a brain cell, keeping a memory around is a lot of work. A variety of proteins need to be continually manufactured at the synapse, the small gap that interfaces one cell to another. But whereas a cell may have a multitude of synapses, the protein synthesis that grows and maintains the connection only occurs at specific ones that have been activated. Work in the sea slug Aplysia (a favorite of neuroscientists because of its large cells) showed that a protein called CPEB, for cytoplasmic polyadenylation element binding, is necessary to keep a synapse activated. CPEB acts as a prion.
Once the prion's chain reaction gets started it's self-perpetuating, and thus the synapse can be maintained after the initial trigger is gone—perhaps for a lifetime. But that still doesn't explain how the first prion is triggered or why it only happens in certain synapses and not others.
An answer comes from Si's work on fruit flies, published February 11 in PLoS Biology. Sex—and, in particular, male courtship behavior—is an ideal realm in which to test memory: If a female is unreceptive, the male will remember this and stop trying to court her. Earlier, Si’s team showed that if the fly's version of CPEB, called Orb2, is mutated so that it cannot act as a prion, the insect briefly remembers that the female is unreceptive but that memory fades over the course of a few days.
Now, Si's team has figured out how the cell turns on the machinery responsible for the persistence of memory—and how the memory can be stabilized at just the right time and in the right place.
Before the memory is formed a fly's neuron is full of a version of the prion called Orb2B. Although this version can switch shapes to form prions' characteristic clumps, it can't get started without the related protein Orb2A. In this week's paper Si and colleagues untangled the multipartnered dance that controls Orb2A's role. First, a protein called TOB binds to Orb2A, allowing it to persist intact in the cell. (Normally, it would be broken down within a few hours.) Once stabilized it needs to have a phosphate tag attached, and this is done by another protein called Lim kinase.
Crucially, Lim kinase is only activated when the cell receives an electrical impulse—and only targeted at that synapse, not any other synaptic connections the cell might also be making. That means that the prion chain reaction is turned on in the specific time and place it's needed. This, researchers say, means the cell has a mechanism to stabilize some synapses but not others—potentially explaining why some of our memories fade, whereas others last a lifetime.
Although work so far on these proteins has been in yeast, sea slugs, flies and mice, the human CPEB may operate in the same way to preserve memories. The next steps, both researchers agree, are to develop better techniques to see where in the brain prions are activated, and to dig into more questions about how the prion process is regulated. One burning question: When we forget, does that mean that the prion's chain reaction has been halted?
LinkedIn profiles have seen an extreme transformation in the last year – if you know where to look and pay attention. Many of us might recall when LinkedIn profiles had no picture. There were no LinkedIn groups or company pages either. It was a character-based site for the most part, like the old days of [...]
Nacho Vega's insight:
These images define you to profile visitors. They deserve the utmost attention. Each image can have a title and a description as well so there is a lot more to it than looks.