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03 Dec 22:16

What Are Your Odds Of Winning The Lottery? [Infographic]

by Colin Lecher
In a word, terrible. On the bright side, your odds of becoming a pro athlete are good by comparison!

People have just won that ridiculous, record-breaking $579.9 million Powerball jackpot. Two people, even! But you know who didn't win the jackpot? A lot more people. This infographic shows exactly how crappy your chances are of winning the lottery--and how lucky today's winners really are.

Probability Of Winning The Lotto (And Other Unlikely Things) by Shane Snow. Learn about data visualization tools.

[visaul.ly]

01 Dec 10:11

um jeito macanudo de ser e de levar a vida: liniers!

by Manú Sena

Trazendo bom humor e leveza ao nosso cotidiano as vezes tão complicado, Liniers acaba nos chamando atenção para a brevidade da vida e para a urgência que devemos ter em aproveitá-la. Isso no entanto, não imprime peso ao seu traço. Antes, nos apresenta situações e personagens que vivem num mundo à parte,cheio de vida e doçura.
Ler o artigo completo

Artigos relacionados:

- you are not banksy
- “um bosque entre dois mundos”
- bichos contextura
- algumas versões interessantes de músicas
01 Dec 09:21

Photo





01 Dec 09:20

Macanudo

29 Nov 14:20

November 29, 2012


29 Nov 14:18

Science Batman!

Science Batman!

Submitted by: Unknown

Tagged: Heat , cold , thermodynamics , batman , science Share on Facebook
29 Nov 14:12

The top seven products at Wired's pop-up store not to miss

by Wired.co.uk Staff


Autographer Buhel Speakgoggle G33 INTERCOM Celestron SkyProdigy Digital Telescope Gocycle G2R bicycle 

Wired's pop-up store, opening 30 November in London's Quadrant Arcade, is bringing the pages of Wired magazine to life. Products, exhibits and demonstrations will celebrate the concept of the "New Industrial Revolution" -- a union of creative thinking and new technologies.

The store will also offer shoppers the opportunity to order a selection of unusual and innovative products seen in the pages of the magazine, via a dedicated mobile interface accessed through tablets and smartphones.

By: Wired.co.uk Staff,

Continue reading...
29 Nov 14:10

Coffeecoffeecoffee

28 Nov 23:12

Can a Jellyfish Unlock the Secret of Immortality? - NYTimes.com

28 Nov 23:04

New Kind of Matter Created

28 Nov 23:04

73-year-old man to sail solo around world in self-constructed 'bathtub' boat

28 Nov 23:02

Biggest Black Hole discovered. It covers 14% mass of the hall galaxy.

28 Nov 17:15

John Mather: We have at least a century of amazing ideas to carry out

by Philippa Warr
John Mather Reddit AMA

John C Mather, winner of the 2006 Nobel Prize in Physics for his work measuring cosmic microwave background radiation, and project scientist on the James Webb Space Telescope (JWST, the most powerful space telescope ever built), stopped by Reddit to answer questions during an AMA (Ask Me Anything, in case you're not a Redditor).

We've pulled together our highlights from his Q&A session, which covered alien space travel, Nasa's next steps, the great thing about studying physics and how the Nobel Prize came about.

 

By: Philippa Warr, Edited by: Liat Clark

Continue reading...
28 Nov 14:04

GE reúne robôs famosos em novo filme

by Amanda de Almeida

Robots on the Move, novo filme da BBDO New York para a GE deve ter mexido com a memória afetiva de muita gente. Nele, vemos um desfile de personagens marcantes da história do cinema e da televisão, que têm em comum a inteligência artificial. Data, de Star Trek: A Próxima Geração, B-9, de Perdidos no Espaço, K.I.T.T., de Supermáquina, e Robby, o Robô, de O Planeta Proibido estão entre os citados na descrição do vídeo, provavelmente os convidados principais.

Todos eles viajam em direção do quartel-general da GE com o objetivo de conhecer em primeira mão a tecnologia que irá tornar as máquinas melhores e mais espertas.

No descritivo não aparece, mas me parece que o fofíssimo Johnny 5, de Curto-Circuito, também faz parte do elenco. Algumas ausências foram sentidas, provavelmente a maior delas seria a de R2D2 e C3PO. E também Hal 9000 (2001), T800 e  T1000 (O Exterminador do Futuro) e Rose (Os Jetsons). De quais robôs você sentiu falta?

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28 Nov 14:03

When Forrest Gump flipped the box over as suggested.

Submitted by: rainbowoops
Posted at: 2012-11-27 18:11:45
See full post and comment: http://9gag.com/gag/5947016


28 Nov 14:01

Suffer in Silence

Submitted by: deather_z
Posted at: 2012-11-28 04:21:48
See full post and comment: http://9gag.com/gag/5947414


28 Nov 13:56

Moderate exercise enhances memory and preserves gray matter

Jogging_young_female

(Credit: Peter van der Sluijs/Wikimedia Commons)

A short burst of moderate exercise enhances the consolidation of memories in both healthy older adults and those with mild cognitive impairment, scientists with UC Irvine’s Center for the Neurobiology of Learning & Memory have discovered.

In their study, post-doctoral researcher Sabrina Segal and neurobiologists Carl Cotman and Lawrence Cahill had people 50 to 85 years old with and without memory deficits view pleasant images — such as photos of nature and animals — and then exercise on a stationary bicycle for six minutes at 70 percent of their maximum capacity immediately afterward.

One hour later, the participants were given a surprise recall test on the previously viewed images. Results showed a striking enhancement of memory by exercise in both the healthy and cognitively impaired adults, compared with subjects who did not ride the bike.

“We found that a single, short instance of moderately intense exercise particularly improved memory in individuals with memory deficits,” Segal said.

She believes the improved memory may be related to the exercise-induced release of norepinephrine, a chemical messenger in the brain known to play a strong role in memory modulation. This hypothesis is based on previous work demonstrating that increasing norepinephrine through pharmacological manipulation sharpens memory and that blocking norepinephrine impairs memory.

In the more recent research, Segal and her colleagues discovered that levels of salivary alpha amylase, a biomarker that reflects norepinephrine activity in the brain, significantly increased in participants after exercise. This correlation was especially strong in people with memory impairment.

“The current findings offer a natural and relatively safe alternative to pharmacological interventions for memory enhancement in healthy older individuals as well as those who suffer from cognitive deficits,” Segal noted. “With a growing population of the aged, the need for improvement of quality of life and prevention of mental decline is more important than ever before.”

UCI’s Alzheimer’s Disease Research Center and the National Institute of Mental Health, a division of the National Institutes of Health, supported the research.

Cerebral hemispheres, showing the main effect of burning calories from a combination of different lifestyle activities on brain structure in 876 elderly individuals. A higher level of calories burned is related to larger gray matter volumes in areas of the brain important for cognitive function including the anterior cingulate gyrus and temporal lobes. The magnitude of the effect is represented by the varying green, yellow, and red colors. Hotter colors, such as red, indicate a stronger effect. (Credit: Raji,C. et al./RSNA)

Preserving your gray matter

In a related study, UCLA researchers have found that an active lifestyle helps preserve gray matter in the brains of older adults and could reduce the burden of dementia and Alzheimer’s disease (AD), according to a study by Cyrus Raji, M.D., Ph.D., radiology resident at UCLA and colleagues.

They  examined how an active lifestyle can influence brain structure in 876 adults, average age 78 years, drawn from the multisite Cardiovascular Health Study. The patients’ condition ranged from normal cognition to Alzheimer’s dementia.

“We had 20 years of clinical data on this group, including body mass index and lifestyle habits,” Dr. Raji said. “We drew our patients from four sites across the country, and we were able to assess energy output in the form of kilocalories per week.”

This figure is of the cerebral hemispheres in profile showing the interaction effect of burning calories from a variety of lifestyle activities on brain structure in persons with Alzheimer’s dementia. Gray matter structure in this group is larger in persons who burn a larger number of calories with different lifestyle activities. The brain areas protected by these lifestyle activities are the posterior cingulate and temporal lobes, regions that are targeted by the pathology of Alzheimer’s disease. (Credit: Raji,C. et al./RSNA)

The lifestyle factors examined included recreational sports, gardening and yard work, bicycling, dancing and riding an exercise cycle.

The researchers used magnetic resonance imaging (MRI) and a technique called voxel-based morphometry to model the relationships between energy output and gray matter volume.

“Voxel-based morphometry is an advanced method that allows a computer to analyze an MR image and build a mathematical model that helps us to understand the relationship between active lifestyle and gray matter volume,” Dr. Raji said. “Gray matter volume is a key marker of brain health. Larger gray matter volume means a healthier brain. Shrinking volume is seen in Alzheimer’s disease.”

After controlling for age, head size, cognitive impairment, gender, body mass index, education, study site location and white matter disease, the researchers found a strong association between energy output and gray matter volumes in areas of the brain crucial for cognitive function. Greater caloric expenditure was related to larger gray matter volumes in the frontal, temporal and parietal lobes, including the hippocampus, posterior cingulate and basal ganglia. There was a strong association between high energy output and greater gray matter volume in patients with mild cognitive impairment and AD.

This figure summarizes the results of the prior two figures onto one slide to show that caloric burn from a diversity of lifestyle activities benefits gray matter and the brain in aging and Alzheimer’s disease (credit: Raji,C. et al./RSNA)

“Gray matter includes neurons that function in cognition and higher order cognitive processes,” Dr. Raji said. “The areas of the brain that benefited from an active lifestyle are the ones that consume the most energy and are very sensitive to damage.”

Lifestyle choices and activities

“What struck me most about the study results is that it is not one but a combination of lifestyle choices and activities that benefit the brain,” he said.

Dr. Raji said the positive influence of an active lifestyle on the brain was likely due to improved vascular health. “Virtually all of the physical activities examined in this study are some variation of aerobic physical activity, which we know from other work can improve cerebral blood flow and strengthen neuronal connections,” he said. “Our initial results show that brain aging can be alleviated through an active lifestyle.”

Video: This video shows a three-dimensional representation of the human brain with results from the multi-site Cardiovascular Health Study of 876 patients shown. The first set of images shows the right and left hemispheres of the brain with green, yellow, and red colors showing how with more calories burned in a variety of lifestyle activities, the larger gray matter volume becomes. Larger gray matter volume with aging means a healthier brain.

Video: This video bridges the results of prior work done by Dr. Raji and his collaborators on obesity and brain shrinkage with the results of the current study showing how an active lifestyle improves brain structure in both normal individuals and persons with Alzheimer’s. While certain lifestyle factors such as obesity are related to shrinkage as shown in the video and increase risk for Alzheimer’s disease, other factors including a diversity of physical activities such as dancing, cycling and gardening can build a better brain. This is thought to occur by improving blood flow and delivery of oxygen and glucose to neurons leading to larger gray matter volumes and improved brain health with aging. The final portion of the video cites published work by Dr. Raji and his collaborators, in addition to the work presented at RSNA 2012, which supports this model of how powerfully positive or negative lifestyle influences the brain.

27 Nov 14:37

November 15, 2012


27 Nov 14:35

November 17, 2012


27 Nov 14:35

November 19, 2012


27 Nov 14:32

November 22, 2012


27 Nov 14:21

Crazy Monster sees it too.



Crazy Monster sees it too.

27 Nov 14:21

Robot dressed as a banana



Robot dressed as a banana

26 Nov 16:40

Photo



26 Nov 15:52

Comic for November 23, 2012


26 Nov 15:48

Follow Me

by Doug

Follow Me

I’m also on Twitter, where I try not to prattle on too much. Here are more wonders of the internet.

26 Nov 15:43

Complex-Probability Random Walks and the Emergence of Continuous General-Relativistic Spacetime from Quantum Dynamics

by Benjamin Goertzel

(A post presenting some interesting, but still only half-baked, physics ideas....)

The issue of unifying quantum mechanics and general relativity is perenially bouncing around in the back of my mind.   I don't spend that much time thinking about it, because I decided years ago to focus most of my intellectual energy on AI and understanding the mind, but I can't help now and then revisiting the good old physics problem, and doing occasional relevant background reading....

Of course there are loads of approaches to unified physics out there these days, some of them extremely sophisticated.  Yet I can't help hoping for a conceptually simpler unification.   Here's what I'm thinking today....

I've been enjoying Frank Blume's 2006 paper A Nontemporal Probabilistic Approach to Specialand General Relativity....   It consists of fairly elementary calculations done in pursuit of a philosophical point.  Blume wanted to show that the continuous spacetime assumed in special and general relativity, can be approximated arbitrarily well by discrete random walks.   The subtle point is that these discrete random walks hop around randomly (according to a certain specified probability distribution) not only in space, but also in time.   So Blume's picture has particles hopping back and forth in time, which in his view is in accordance with Julian Barbour's perspective that "physical reality is essentially nontemporal and is best thought of as an ordered sequence of discrete static images" (see Barbour's book  The End of Time).  

I don't feel confident I know how physical reality is "best thought of" ... but I do agree with Barbour and Blume that the view of time as flowing forward from past to future is badly flawed.  This sense of unidirectional time-flow is part of  human psychology, and perhaps part of the dissipative nature of the human mind/body as a macroscopic, thermodynamic system ... but it's not fundamental in the way that people sometimes naively assume.   It's not there in microphysics, either -- at the quantum level the flowing of time from past to future is an alien concept.  If you think this sounds like nonsense, read Barbour's book!

But the philosophy of time is somewhat peripheral to the point I want to make here.   What I've been thinking about is the possibility of replacing Blume's random walk, which is defined in terms of ordinary real-number probabilities, with an analogous random walk defined in terms of complex-number probabilities.   

Saul Youssef, in a series of interesting papers (click here and scroll down to Youssef's name) has shown that if one replaces ordinary real-number probabilities with complex-number probabilities, and adds a few other commonsensical assumptions, then the equations of quantum theory basically pop out.        

This direction of research seems natural once one notes that, according to the basic math of probability theory, there are four options for creating probabilities that obey all the standard probability rules: real-number, complex-number, quaternionic and octonionic probabilities.  Classical physics uses the standard real-number option.  Quantum physics uses the complex-number option.

Ordinary quantum logic uses real-number probabilities, but uses an unusual logic (lattice meet and join on the lattice of subspaces of a complex Hilbert space), which lacks some of the normal rules of Boolean logic, such as distributivity.    Youssef's exotic probability approach retains ordinary Boolean logic rules, but moves to complex number probabilities.   

What I began wondering is: What if you replace Blume's conventional random walk with a random walk in which each movement of a particle is quantified by a certain complex-number probability?

Then a particle may move in various spatiotemporal directions, and there is the possibility for constructive or destructive interference between the different directions.  

And it seems that, in the case where the interference between the different directions cancels out, one would get the same behavior as a real-probability random walk.  

So based on back-of-the-envelope calculations I did the other day, it looks like one can probably get General Relativity to emerge as a statistical approximation to the large-scale behavior of complex-number-probability (quantum) random walks, under conditions of minimal interference.

How far does a perspective like this go, in terms of explaining the particulars of unified physics?  I don't know, and don't seem to have the time to do the rigorous calculations to find out, right now.  But it seems an interesting direction....   If you're a physicist interested in helping work out the details, drop me a line! ...

 

26 Nov 15:37

Photo



26 Nov 15:37

The Rules Do Not Apply

The Rules Do Not Apply

Submitted by: Unknown (via Sofa Pizza)

Tagged: gifs , kids , lift the system , kmfdm , the rules do not apply Share on Facebook
25 Nov 15:22

Magical Street Art WIN

Magical Street Art WIN

Submitted by: Unknown

Tagged: disney , Street Art , art , cinderalla , graffiti Share on Facebook