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Submission + - Cracking the Code on Trump Tweets (varianceexplained.org)

jIyajbe writes: From Electoral-Vote.com:

"A theory has been circulating that the Donald Trump tweets that come from an Android device are from the candidate himself, while the ones that come from an iPhone are the work of his staff. David Robinson, a data scientist who works for Stack Overflow, decided to test the theory. His conclusion: It's absolutely correct (http://varianceexplained.org/r/trump-tweets/).

Robinson did some text-mining (using R) to analyze roughly 1,400 tweets from Trump's timeline, and demonstrated conclusively that the iPhone tweets are substantively different than the Android tweets. The former tend to come later at night, and are vastly more likely to incorporate hashtags, images, and links. The latter tend to come in the morning, and are much more likely to be copied and pasted from other people's tweets. In terms of word choice, the iPhone tweets tend to be more neutral, with their three most-used phrases being "join," "#trump2016," and "#makeamericagreatagain." The Android tweets tend to be more emotionally charged, with their three most-used phrases being "badly," "crazy," and "weak.""

Submission + - Every Time You Fly, You Trash The Planet — And There's No Easy Fix (fivethirtyeight.com)

jIyajbe writes: Christie Awchwanden of FiveThirtyEight.com writes "When the latest international Climate Conference wrapped up in Lima, Peru, last month, delegates boarded their flights home without much official discussion of how the planes that shuttled them to the meeting had altered the climate. Aircraft currently contribute about 2.5 percent of global carbon dioxide emissions...if the aviation industry were a country, it would be one of the world’s top 10 emitters of CO2. And its emissions are projected to grow between two and four times by 2050."

Beyond just volume of emissions:

Planes don’t just release carbon dioxide, they also emit nitrogen oxides, sulphur oxides and black carbon, as well as water vapor that can form heat-trapping clouds...These emissions take place in the upper troposphere, where their effects are magnified. When this so-called radiative forcing effect is taken into account, aviation emissions produce about 2.7 times the warming effects of CO2 alone...


Submission + - MIT Removes Online Physics Lectures and Courses by Walter Lewin (mit.edu)

jIyajbe writes: MIT is indefinitely removing retired physics faculty member Walter Lewin’s online lectures from MIT OpenCourseWare and online MITx courses from edX, the online learning platform co-founded by MIT, following a determination that Dr. Lewin engaged in online sexual harassment in violation of MIT policies.

Submission + - Nightfall: Can Kalgash Exist? (arxiv.org)

jIyajbe writes: Two researchers from the Indian Institute of Astrophysics investigate the imaginary world of Kalgash, a planetary system based on the novel ‘Nightfall’ (Asimov & Silverberg, 1991). From the arXiv paper:

"The system consists of a planet, a moon and an astonishing six suns. The six stars cause the wider universe to be invisible to the inhabitants of the planet. The author explores the consequences of an eclipse and the resulting darkness which the Kalgash people experience for the first time. Our task is to verify if this system is feasible, from the duration of the eclipse, the ‘invisibility’ of the universe to the complex orbital dynamics."

Their conclusion?

"We have explored several aspects of Asimov’s novel. We have found that the suns, especially Dovim are bright enough to blot out the stars. Kalgash 2 can eclipse Dovim for a period of 9 hours. We also tested one possible star configuration and after running some simulations, we found that the system is possible for short periods of time."


Submission + - The Surprisingly Simple Way Egyptians Moved Massive Pyramid Stones (washingtonpost.com)

jIyajbe writes: Few have traveled to the pyramids of Egypt and not wondered how an ancient civilization without modern technology could have constructed structures so large they can be viewed from space. Some have theorized they were built inside out..

On the flakier side, some say aliens did it.

Perhaps the most confounding mystery of all involves how incredibly large stones made their way to the middle of the desert without massive mechanical assistance. No camel, even the Egyptian kind, is that strong.

The truth, researchers at the University of Amsterdam announced this week in a study published in the journal Physical Review Letters, may actually be quite simple. It has long been believed that Egyptians used wooden sleds to haul the stone, but until now it hasn’t been entirely understood how they overcame the problem of friction. It amounts to nothing more, scientists say, than a "clever trick."

They likely wet the sand.

Submission + - Stephen Fry Supports Campaign To Save Southampton Pub "The Hobbit" (metro.co.uk) 1

jIyajbe writes: "An online campaign to save a Southampton pub named The Hobbit from Hollywood legal action has gained the support of Stephen Fry.

Fry, who is among the cast for the big budget film adaptation of JRR Tolkien's precursor to The Lord of the Rings from which the pub took its name, said the threat of a lawsuit from California-based movie producer Saul Zaentz Company (SZC) was 'self-defeating bullying'.

Stella Roberts, 41, the landlady of The Hobbit pub, said 'The pub has been called The Hobbit for more than 20 years and it has never been a problem,' she told the Southern Daily Echo.

'I believe the decision to target us now was prompted by the release of the film.'

'We have been told that absolutely everything to do with the Lord of the Rings and The Hobbit must go. We just haven't got the resources to fight it.'

Edward Wildman Group solicitors, acting for SZC in the UK, said its client would not be commenting on the case."

Submission + - Solar power without solar cells: A hidden magnetic (physorg.com)

jIyajbe writes: A dramatic and surprising magnetic effect of light discovered by University of Michigan researchers could lead to solar power without traditional semiconductor-based solar cells.

The researchers found a way to make an “optical battery,” said Stephen Rand, a professor in the departments of Electrical Engineering and Computer Science, Physics and Applied Physics. In the process, they overturned a century-old tenet of physics.

“You could stare at the equations of motion all day and you will not see this possibility. We’ve all been taught that this doesn’t happen,” said Rand.

Idle

Submission + - Woman Dies in Her Cubicle, Nobody Notices (time.com)

jIyajbe writes: Ever feel like no one notices all the effort you put into your job?

Well, hopefully they at least notice you're alive and breathing. If not, you could find yourself in the same situation as Rebecca Wells, a 51-year-old woman who died in her cubicle Friday in Los Angeles County.

Though she died on Friday, she was unnoticed at her desk in the Department of Internal Services until Saturday. The county coroner is yet to determine the cause of death.

Idle

Submission + - Catholic Church Approves Confession by iPhone (time.com)

jIyajbe writes: The Catholic Church in America has approved Confession: A Roman Catholic App, for use among churchgoers and lapsed Catholics alike. Patrick Leinen, of Little iApps, the company that created Confession, claims it has already helped one person come back to the church after 20 years away.

Submission + - Feds settle case of woman fired over Facebook site (yahoo.com)

jIyajbe writes: Employers should think twice before trying to restrict workers from talking about their jobs on Facebook or other social media.

That's the message the government sent on Monday as it settled a closely watched lawsuit against a Connecticut ambulance company that fired an employee after she went on Facebook to criticize her boss.

The National Labor Relations Board sued the company last year, arguing the worker's negative comments were protected speech under federal labor laws. The company claimed it fired the emergency medical technician because of complaints about her work.

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