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The INFN School Of Statistics In Vietri, 2013

June 8, 2013 - 1:35pm
Statistics data analysis is one of those things that experimental physicists learn along the way. It is not a topic usually included in the curriculum studiorum of physics students at Universities: only few basic ingredients are taught during laboratory courses, and not much is added to that during a typical Ph.D. program.

One usually learns the most common tools to fit histograms, combine measurements, estimate uncertainties on the field, as these things are always needed to produce publishable physics results. But several key statistical concepts often remain fuzzy and obscure in the mind of a large fraction of experimental physicists throughout their career. I know this because this happened to me, too - for quite a few years after my graduation.
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Love And Reason?

June 8, 2013 - 10:00am
Recently I attended a talk by Ronnie de Sousa, a philosopher at The University of Toronto, by the somewhat unusual, almost oxymoronic, title of “Love and Reason” (as opposed to, say, Love or Reason). It turned out to be a fascinating tour de force ranging from the Countess of Champagne and her 1176 verdict on the nature of love, to cognitive scientist’s Helen Fisher studies of the chemical underpinning of different aspects of love. Here I will limit myself to a few aspects of de Sousa’s talk (who graciously provided me with his original slides), but Ronnie is finishing a paper on the subject, so stay tuned for much more if what follows happen to sufficiently stimulate your curiosity.
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Psychopathic Philosophy Asperger Version Of A Core Question Of Philosophy

June 8, 2013 - 7:43am

Temple Grandin’s “The Autistic Brain: Thinking Across the Spectrum” [1] belongs to a new(ly fashionable but old) way of thinking that supports my own approach, namely that pathologic (psychopathic) thinking is necessary for new-enlightenment, for example in the face of existential dangers evolving in the technological substrate (Robopocalypse, Global Suicide).

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Hox Swingers: The Role Of Architect Genes In Embryonic Development

June 7, 2013 - 9:00pm

A few brief days in embryonic life lays out our body's construction plan. The appearance of limbs and vertebrae is orchestrated by a family of 'architect' genes called Hox, each providing precise instructions at a given time.

New research has demonstrated that these genes were aligned within our chromosomes according to the order of structures - collinear expression in developing limb buds: first the components of the shoulder, then the arm, and finally the fingers.


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Whispering Gallery Goes Nanoscale

June 7, 2013 - 5:04pm

If you've been to a whispering gallery, a quiet, circular space often underneath a dome or vault that captures and amplifies sounds as quiet as a whisper, you have witnessed parabolics in action. The sound waves are efficiently propagated by the concave surface and similar whispering-gallery waves are evident in light.

Researchers are applying similar principles in the development optomechanical sensors that will help unlock vibrational secrets of chemical and biological samples at the nanoscale.


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Twitterverse Data: Making Order From Chaos

June 7, 2013 - 3:46pm

Using social media like Twitter, Facebook and others is said to be like drinking from a fire hose.

A team of data scientists at the Department of Energy's Pacific Northwest National Laboratory, is trying to drink from 7 billion firehoses.  They have created a system capable of analyzing billions of tweets and other social media messages in an effort to discover patterns and make sense of all the information. They call the analysis tool "SALSA" (SociAL Sensor Analytics).

"The world is equipped with human sensors – more than 7 billion and counting. It's by far the most extensive sensor network on the planet. What can we learn by paying attention?"  Court Corley, data scientist at PNNL, said.


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Visual Impairment Linked To Diminished Balance

June 7, 2013 - 3:13pm

Visually impaired individuals and people with uncorrected refractive error, those who could benefit from glasses to achieve normal vision but don't wear glasses, have a significantly greater risk of diminished balance with their eyes closed on a compliant, foam surface than individuals with normal vision.

The research suggests that vision may play an important role in calibrating the vestibular system, which includes the bones and soft tissue of the inner ear, to help optimize physical balance. The work provides direction for more targeted studies on how poor vision impacts vestibular balance, and how to better develop fall prevention strategies for those with poor vision.


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Psychologists Study How To Create Better Soldiers But Fewer War Crimes

June 7, 2013 - 3:10pm

Combat troops must minimize the 'human-ness' of their enemies in order to kill them, they can't be effective fighters if they're distracted by feelings of empathy for opponents.

But if the opponent is dehumanized, which entails seeing them as disgusting animals, the possibility for war crimes is greater, note psychologists writing in NeuroImage. Indifference to the enemy, rather than loathing, may help prevent war crimes and provide troops with a better path back to healthy civilian lives, they propose.

Their hypothesis is based on new work showing how the brain operates when people objectify—that is, think of others as mere objects — or dehumanize, which entails seeing others as disgusting animals.


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Tropical Storm Andrea's Towering Thunderstorms Hit Florida

June 6, 2013 - 9:58pm

NASA's Tropical Rainfall Measuring Mission (TRMM satellite) flew directly above tropical storm Andrea on Thursday, June 6, 2013 at 0508 UTC (1:08 a.m. EDT). This orbit showed that Andrea had a large area of moderate to heavy rainfall in the northeast quadrant of the storm and precipitation was spreading over the state of Florida.


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3 Billion-Year-Old Plankton Microfossils Found

June 6, 2013 - 9:35pm

Spindle-shaped inclusions in 3 billion-year-old rocks are microfossils of plankton probably inhabited the oceans around the globe during that time - but these inclusions in the rocks were not only biological in origin, they were also likely planktonic autotrophs - free-floating, tiny ocean organisms that produce energy from their environment. 


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Spooky Action Entanglement States Get Organized

June 6, 2013 - 9:00pm

"I think I can safely say that nobody understands quantum mechanics," spoke American physicist, educator and quote machine Richard Feynman — underlining the idea that even leading scientists struggle to develop an intuitive feeling for quantum mechanics. 

One reason for this is that quantum phenomena often have no counterpart in classical physics, as we see in quantum entanglement: Entangled particles seem to directly influence one another, no matter how widely separated they are. It looks as if the particles can 'communicate' with one another across arbitrary distances. Albert Einstein, famously, called this seemingly paradoxical behavior "spooky action at a distance."


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Bmp4: Why The Embryonic Chicken Penis Stops Growing

June 6, 2013 - 5:36pm

In animals that reproduce by internal fertilization, as humans do, the penis is invaluable, from an evolutionary point of view. 

Yet birds have evolved to not need them. Developmentally speaking, birds' penises have gone. Land fowl, which have only rudimentary penises as adults, have normally developing penises as early embryos. Later in development, however, the birds turn on a genetic program that leads their budding penises to stop growing and then wither away.


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A Tool For Etymologists

June 6, 2013 - 2:44pm
A Tool For Etymologists

Advances in science frequently generate new words and phrases.  Accordingly, a good source of etymological information can often help pin down the era in which a new discovery was made.  Similarly, a knowledge of the history of discovery can help to pin down the era in which a word or phrase was coined.
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TW Hydrae - Maybe Our Sun Was A Feisty Toddler Too

June 6, 2013 - 1:30pm

Astronomers can look back in time by gathering light from distant stars that was sent billions of years ago. Another way to learn about the past is to study similar stars to our own, but at a much younger age.

New work  studying the young star TW Hydrae, located about 190 light-years from Earth in the southern constellation Hydra the Water Snake, suggests that our Sun was both active and "feisty" in its infancy, growing in fits and starts while burping out bursts of X-rays.


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Genome Reduction In Bladderworts Vs. Leg Loss In Snakes

June 6, 2013 - 11:00am

In one sense, I am happy that there is enough interest in the concept of “junk DNA” (and by extension, my area of research in genome size evolution) that the subject gets regular media attention.

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Atheists Find Comfort In Faith Too: Belief In Science

June 5, 2013 - 9:11pm

Studies have shown that religious people are actually helped by faith in stressful situations.

Oxford University psychologists suggest atheists are also helped by belief during times of crisis; the explanatory and revealing power of science increases in the face of stress or anxiety, they have found.

The social psychologists argue that a 'belief in science' may help non-religious people deal with adversity by offering similar comfort and reassurance that religious people get from spirituality.


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Can Laser Light Irradiation Influence Cloud Formation?

June 5, 2013 - 8:40pm

Karlsruhe's Institute of Technology, Freie Universität Berlin and the University of Geneva set out to determine whether and how far laser light and plasma can influence cloud formation.


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Archicebus Achilles: Oldest Known Primate Discovered

June 5, 2013 - 8:00pm
The world’s oldest known fossil primate skeleton, unearthed from an ancient lake bed in central China’s Hubei Province, near the course of the modern Yangtze River, represents a previously unknown genus and species that has been named Archicebus achilles, according to the paper in Nature

The new fossil takes its name from the Greek arche (meaning beginning or first; the same root as archaeology) and the Greek kebos (meaning long-tailed monkey). The species name achilles (derived from the mythological Greek warrior Achilles) highlights the new fossil’s unusual ankle anatomy.
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Embrace Your Animality, Says French Philosopher

June 5, 2013 - 6:01pm

You're an animal, says Dominique Lestel, a French philosopher who opposes the separation of human and animal life.  

In a new paper, Lestel reminds sociology readers that we are animals and says animals profoundly influence our culture – perhaps more so than they had initially thought.

Western thought that the human species is highly developed and that sets the human species apart. Lestel instead advocates animality (our animal nature) and says humanization is an ongoing performative practice, rather than a historical threshold that was crossed long ago.


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Clean Air Act Caused Climate Change

June 5, 2013 - 6:01pm

A Georgia State University researcher says the Clean Air Act signed by President Richard Nixon in 1970 led to climate change - in a good way. 

Jeremy Diem, an associate professor in the Department of Geosciences, analyzed summer rainfall data from nine weather stations in the Atlanta metropolitan area from 1948 to 2009, and discovered that precipitation increased in the late 1970s after drops in the 1950s and '60s.

Cause: Passage of the Clean Air Act of 1970, he says. Pollution had been higher in the earlier decades. Some studies have found a general correlation between air pollution and rainfall, with higher concentrations of particulates in the air suppressing rainfall, they conclude.


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