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Scientists Craft Seamless 2D Semiconductor Junctions 48

Posted by Unknown Lamer
from the flat-is-in dept.
vinces99 (2792707) writes Scientists have developed what they believe is the thinnest-possible semiconductor, a new class of nanoscale materials made in sheets only three atoms thick. The University of Washington researchers have demonstrated that two of these single-layer semiconductor materials can be connected in an atomically seamless fashion known as a heterojunction. This result could be the basis for next-generation flexible and transparent computing, better light-emitting diodes, or LEDs, and solar technologies.

"Heterojunctions are fundamental elements of electronic and photonic devices," said senior author Xiaodong Xu, a UW assistant professor of materials science and engineering and of physics. "Our experimental demonstration of such junctions between two-dimensional materials should enable new kinds of transistors, LEDs, nanolasers, and solar cells to be developed for highly integrated electronic and optical circuits within a single atomic plane."

If Java Wasn't Cool 10 Years Ago, What About Now? 500

Posted by timothy
from the pretty-good-drink-especially-with-honey-and-cream dept.
10 years ago today on this site, readers answered the question "Why is Java considered un-cool?" 10 years later, Java might not be hip, but it's certainly stuck around. (For slightly more than 10 years, it's been the basis of the Advanced Placement test for computer science, too, which means that lots of American students are exposed to Java as their first formally taught language.) And for most of that time, it's been (almost entirely) Free, open source software, despite some grumbling from Oracle. How do you see Java in 2014? Are the pessimists right?

Mangalyaan Gets Ready To Enter Mars Orbit 66

Posted by timothy
from the space-is-a-big-place dept.
William Robinson (875390) writes India's Mars Orbiter Mission, known as Mangalyaan is now at a distance of just nine million kilometres from the red planet, and is scheduled to enter the orbit of Mars at 7.30 am on September 24. Mangalyaan was launched on 5th November 2013 by ISRO, presently busy planning to reduce the speed of the spacecraft through the process of firing the LAM engine and bring it to 1.6 km/sec, before it is captured by the planet's gravity. Eventually, the mission's official updates page should catch up.

Eruption Of Iceland's Bardarbunga Raises Travel Alert to Red 38

Posted by timothy
from the melting-iceland dept.
The eruption of the Bardarbunga volcano in central Iceland, which appeared a strong possibility after a series of earthquakes, is currently underway, beneath the ice of the Dyngjujokull glacier. The BBC reports that Iceland has raised its air travel alert to red, its higest level, but that for now all of Iceland's airports remain open. CNN notes that "the underground activity did not immediately result in changes to volcanic activity on the surface ... Because of a pressure from the glacier cap it is uncertain whether the eruption will stay sub-glacial or not, Iceland 2 TV said."

Illinois University Restricts Access To Social Media, Online Political Content 129

Posted by timothy
from the teach-the-controversy dept.
onproton writes Northern Illinois University recently began restricting student access to web pages that contain "illegal or unethical" content which, according to University policy, includes resources used for "political activities...and the organization or participation in meetings, rallies and demonstrations." A student raised concerns after attempting to access the Wikipedia page for Westboro Baptist Church, and receiving a filter message informing him that his access of this page would likely violate the University's Acceptable Use Policy, along with a warning that "all violations would be reviewed." This has lead to questions about whether some policies that restrict student access to information are in the best interest of the primary goal of education.

A Better Way To Make Mind-Controlled Prosthetic Limbs 26

Posted by Soulskill
from the resistance-is-futile dept.
the_newsbeagle writes: To make a brain-machine interface, you need a way to capture neurons' electric signals. The most precise and most invasive way uses implants that are stuck in the gray matter. The least precise and least invasive way uses EEG sensors stuck to the scalp. But researchers at Johns Hopkins University say there's a third way that gets the best of both worlds, which is not too invasive and fairly precise. They use ECoG systems, in which a mesh of electrodes is placed under the skull, draped over the surface of the cortex.

They're testing their systems on epilepsy patients, who have these ECoG systems inserted anyway while they're waiting for surgery (the electrodes record the source of their seizures). The researchers are capturing these patients' movement commands from their brains, and using them to control robotic limbs. Someday such a system could be used by amputees to control their prosthetic limbs.

Latest Wikipedia Uproar Over 'Superprotection' 239

Posted by Soulskill
from the like-regular-protection,-but-super dept.
metasonix writes: As if the problems brought up during the recent 2014 Wikimania conference weren't enough, now Wikipedia is having an outright battle between its editor and administrator communities, especially on the German-language Wikipedia. The Wikimedia Foundation, currently flush with cash from its donors, keeps trying to force flawed new software systems onto the editor community, who has repeatedly responded by disabling the software. This time, however, Foundation Deputy Director Erik Moeller had the bright idea to create a new level of page protection to prevent the new software from being disabled. "Superprotection" has resulted in an outright revolt on the German Wikipedia. There has been subsequent coverage in the German press, and people have issued demands that Moeller, one of Wikipedia's oldest insiders, be removed from his job. One English Wikipedia insider started a petition demanding the removal of superprotection."

Couchsurfing Hacked, Sends Airbnb Prank Spam 44

Posted by timothy
from the or-we'll-shoot-this-dog dept.
Slashdot regular (and volunteer) Bennett Haselton writes with a report that an anonymous prankster hacked the website and sent spam to about 1 million members, snarkily advertising their commercial arch-rival Airbnb as "the new Couchsurfing." (Read on below for more on the breach.) As of now, the spam's been caught, but not the spammer.

The 2014 Hugo Awards 179

Posted by Soulskill
from the congratulations-to-all dept.
Dave Knott writes: WorldCon 2014 wrapped up in London this last weekend and this year's Hugo Award winners were announced. Notable award winners include:

Best Novel: Ancillary Justice by Ann Leckie
Best Novelette: "The Lady Astronaut of Mars" by Mary Robinette Kowal
Best Novella: "Equoid" by Charles Stross
Best Short Story: "The Water That Falls on You from Nowhere" by John Chu
Best Graphic Story: "Time" by Randall Munroe
Best Dramatic Presentation (Long Form): Gravity written by Alfonso Cuarón & Jonás Cuarón, directed by Alfonso Cuarón
Best Dramatic Presentation (Short Form): Game of Thrones: "The Rains of Castamere" written by David Benioff & D.B. Weiss, directed by David Nutter

The results of this year's awards were awaited with some some trepidation in the SF community, due to well-documented attempts by some controversial authors to game the voting system. These tactics appear to have been largely unsuccessful, as this is the fourth major award for the Leckie novel, which had already won the 2013 BSFA, 2013 Nebula and 2014 Clarke awards.

Scientists Baffled By Unknown Source of Ozone-Depleting Chemical 303

Posted by Soulskill
from the i-blame-the-schools dept.
schwit1 writes: Scientists have found that, despite a complete ban since 2007, ozone-depleting chemicals are still being pumped into the atmosphere from some unknown source. "Carbon tetrachloride (CCl4), which was once used in applications such as dry cleaning and as a fire-extinguishing agent, was regulated in 1987 under the Montreal Protocol along with other chlorofluorocarbons that destroy ozone and contribute to the ozone hole over Antarctica. Parties to the Montreal Protocol reported zero new CCl4 emissions between 2007-2012. However, the new research shows worldwide emissions of CCl4 average 39 kilotons (about 43,000 U.S. tons) per year, approximately 30 percent of peak emissions prior to the international treaty going into effect. "We are not supposed to be seeing this at all," said Qing Liang, an atmospheric scientist at NASA's Goddard Space Flight Center in Greenbelt, Maryland, and lead author of the study published online in the Aug. 18 issue of Geophysical Research Letters, a journal of the American Geophysical Union. "It is now apparent there are either unidentified industrial leakages, large emissions from contaminated sites, or unknown CCl4 sources."
Open Source

Qt Upgrades From LGPLv2.1 to LGPLv3 116

Posted by Unknown Lamer
from the who-doesn't-like-freedom-zero dept.
Digia has announced that existing Qt modules will now be covered under the LGPLv3 in addition to the LGPLv2.1, GPLv3, and the enterprise (proprietary) license. New modules will be dropping LGPLv2.1 and GPLv3+ and be released under the LGPLv3 and GPLv2+ instead. This should be a good move: new Qt modules will be Apache license compatible, LGPLv3 code can trivially be converted to GPLv3, and Digia is even releasing a few modules it intended to make proprietary as Free Software. The KDE Free Qt Foundation is on board. The move was made because of device vendors exploiting a loophole in the GPLv2/LGPLv2.1 that denied users the right to modify Qt or write their own applications. Digia has some self-interest as well, since those vendors were exploiting the tivoization loophole to avoid buying enterprise licenses. From the announcement: We also consider locked-down consumer devices using the LGPL’ed version of Qt to be harmful for the Qt ecosystem. ... Because of this, we are now adding LGPL v3 as a licensing option to Qt 5.4 in addition to LGPL v2.1. All modules that are part of Qt 5.3 are currently released under LGPL v2.1, GPL v3 and the commercial license. Starting with Qt 5.4, they will be released under LGPL v2.1, LGPL v3 and the commercial license. ... In Qt 5.4, the new Qt WebEngine module will be released under LGPL v3 in the open source version and under a LGPLv2.1/commercial combination for Qt Enterprise customers. ...

Adding LGPLv3 will also allow us to release a few other add-ons that Digia before intended to make available solely under the enterprise license. ... The first module, called Qt Canvas3D, will give us full WebGL support inside Qt Quick. ... The second module is a lightweight WebView module ... There is a final add-on that will get released under LGPL v3. This module will give native look and feel to the Qt Quick Controls on Android. This module can’t be released under LGPL v2.1, as it has to use code that is licensed under Apache 2.0, a license that is incompatible with LGPL v2.1, but compatible with LGPL v3.

Your Phone Can Be Snooped On Using Its Gyroscope 96

Posted by Unknown Lamer
from the phone-can-be-snooped-on-by-everything dept.
stephendavion (2872091) writes Researchers will demonstrate the process used to spy on smartphones using gyroscopes at Usenix Security event on August 22, 2014. Researchers from Stanford and a defense research group at Rafael will demonstrate a way to spy on smartphones using gyroscopes at Usenix Security event on August 22, 2014. According to the "Gyrophone: Recognizing Speech From Gyroscope Signals" study, the gyroscopes integrated into smartphones were sensitive enough to enable some sound waves to be picked up, transforming them into crude microphones.
Open Source

At Home with Tim O'Reilly (Videos 1 and 2 of 6) 11

Posted by Roblimo
from the not-just-a-man-but-a-vital-force-behind-open-source dept.
Wikipedia says Tim O'Reilly "is the founder of O'Reilly Media (formerly O'Reilly & Associates) and a supporter of the free software and open source movements." And so he is. O'Reilly Media is also the company from which Make magazine and the assorted Maker Faires sprang, before spinning off into an ongoing presence of their own. (This year's Solid conference, as well as the confluence of hardware and software at OSCON demonstrate O'Reilly's ongoing interest in the world of makers, though.) O'Reilly has been a powerful force in technical book publishing, popularized the term Web 2.0, and has been at least a godfather to the open source movement. He's also an interesting person in general, even more so when he's hanging out at home than when he's on stage at a conference or doing a formal interview. That's why we were glad Timothy Lord was able to get hold of Tim O'Reilly via Hangout while he was in a relaxed mood in a no-pressure environment, happy to give detailed responses based on your questions, from small (everyday technology) to big (the Internet as "global brain").

We've run a few two-part videos, but this is the first time we've split one video into six parts -- with two running today, two tomorrow, and two Thursday. But then, how many people do we interview who have had as much of an effect on the nature of information transmission -- as opposed to just publishing -- as Tim O'Reilly? We don't know for sure, but there's a good chance that O'Reilly books are owned by more Slashdot readers than books from any other publisher. That alone makes Tim O'Reilly worth listening to for nearly an hour, total. (Alternate Video Links: Video 1 ~ Video 2; transcript below covers both videos.)

C++14 Is Set In Stone 192

Posted by timothy
from the but-it's-a-soft-stone dept.
jones_supa (887896) writes "Apart from minor editorial tweaks, the ISO C++14 standard can be considered completed. Implementations are already shipping by major suppliers. C++14 is mostly an incremental update over C++11 with some new features like function return type deduction, variable templates, binary literals, generic lambdas, and so on. The official C++14 specification release will arrive later in the year, but for now Wikipedia serves as a good overview of the feature set."

Iceland's Seismic Activity: A Repeat Show for Atmospheric Ash? 69

Posted by timothy
from the orange-is-the-new-ash dept.
In 2010, ash spewed into the atmosphere by the volcano beneath Iceland's Eyjafjallajökull glacier grounded European air traffic for days (and, partially, for weeks). As reported by The Guardian, a series of similarly situated earthquakes may herald a similar ash-ejecting erruption, and the country has raised its volcano risk to its second-most-severe rating (orange). From the article: Iceland met office seismologist Martin Hensch said the risk of any disruptive ash cloud similar to the one in 2010 would depend on how high any ash would be thrown, how much there would be and how fine-grained it would be. Bardarbunga is Iceland's largest volcanic system, located under the ice cap of the Vatnajokull glacier in the southeast of Iceland. It is in a different range to Eyjafjallajokull. The met office said in a statement it measured the strongest earthquake in the region since 1996 early on Monday and it now had strong indications of ongoing magma movement. "As evidence of magma movement shallower than 10km implies increased potential of a volcanic eruption, the Bardarbunga aviation colour code has been changed to orange," it said. "Presently there are no signs of eruption, but it cannot be excluded that the current activity will result in an explosive subglacial eruption, leading to an outburst flood and ash emission." ... Hensch said the biggest risk in Iceland itself was from flood waves from any eruption under the glacier. He said the area of Iceland mainly at risk of flooding was mostly uninhabited but that roads in the area had been closed.

Transparent Fish Lead to Stem Cell Research Breakthrough 33

Posted by timothy
from the we-see-what-you-did-there dept.
brindafella (702231) writes Australian scientists have accidentally made one of the most significant discoveries in stem cell research, by studying the transparent embryos of Zebrafish (Danio rerio). The fish can be photographed and their development studied over time, and the movies can be played backwards, to track back from key developmental stages to find the stem cell basis for various traits of the fish. This fundamental research started by studying muscles, but the blood stem cell breakthrough was a bonus. They've found out how hematopoietic stem cells (HSC), among the most important stem cells found in blood and bone marrow, is formed. The scientists are based at the Australian Regenerative Medicine Institute at Monash University. The research has been published in the Nature medical journal. This discovery could lead to the production of self-renewing stem cells in the lab to treat multiple blood disorders and diseases.

Why Hasn't This Asteroid Disintegrated? 74

Posted by Soulskill
from the this-is-glue.-strong-stuff. dept.
sciencehabit writes: Planetary scientists have found an asteroid spinning too fast for its own good. The object, known as 1950 DA, whips around every 2.1 hours, which means that rocks on its surface should fly off into space. What's keeping the remaining small rocks and dust on the surface? The researchers suggest van der Waals forces, weak forces caused by the attraction of polar molecules, which have slightly different charges on different sides of the molecule. For example, water molecules exhibit surface tension because of van der Waals forces, because the negative charge of one water molecule's oxygen atom is attracted to nearby water molecules' hydrogen atoms, which have a positive charge at their surfaces. Similar attractions could be occurring between molecules on the surfaces of different pieces of dust and rock. Such forces would be comparable to those that caused lunar dust to stick to astronauts' space suits.

NASA's Greenhouse Gas Observatory Captures 'First Light' 143

Posted by Unknown Lamer
from the captain-planet-will-find-you dept.
mdsolar (1045926) writes with news that NASA's second attempt to launch a satellite to map carbon dioxide levels across the globe succeeded, and its instruments are operating properly. From the article: NASA's first spacecraft dedicated to studying Earth's atmospheric climate changing carbon dioxide levels and its carbon cycle has reached its final observing orbit and taken its first science measurements as the leader of the world's first constellation of Earth science satellites known as the International 'A-Train. The Orbiting Carbon Observatory-2 (OCO-2) is a research satellite tasked with collecting the first global measurements of atmospheric carbon dioxide (CO2) — the leading human-produced greenhouse gas and the principal human-produced driver of climate change. The 'first light' measurements were conducted on Aug. 6 as the observatory flew over central Papua New Guinea and confirmed the health of the science instrument.

The IPv4 Internet Hiccups 248

Posted by Soulskill
from the if-it-ain't-broke,-don't-negligently-let-it-break dept.
New submitter pla writes: Due to a new set of routes published yesterday, the internet has effectively undergone a schism. All routers with a TCAM allocation of 512k (or less), in particular Cisco Catalyst 6500 and 7600's, have started randomly forgetting portions of the internet. 'Cisco also warned its customers in May that this BGP problem was coming and that, in particular, a number of routers and networking products would be affected. There are workarounds, and, of course the equipment could have been replaced. But, in all too many cases this was not done. ... Unfortunately, we can expect more hiccups on the Internet as ISPs continue to deal with the BGP problem." Is it time to switch to all IPv6 yet?
Input Devices

Type 225 Words per Minute with a Stenographic Keyboard (Video) 109

Posted by Roblimo
from the you-can-type-faster-if-you-use-more-than-one-finger-at-a-time dept.
Joshua Lifton says you can learn to type at 225 words per minute with his Stenosaurus, an open source stenography keyboard that has a not-there-yet website with nothing but the words, "Stenography is about to evolve," on it as of this writing. If you've heard of Joshua it's probably because he's part of the team behind Crowd Supply, which claims, "Our projects raise an average of $43,600, over twice as much as Kickstarter." A brave boast, but there's plenty of brainpower behind the company. Joshua, himself. has a PhD from MIT, which according to his company bio means, "he's devoted a significant amount of his time learning how to make things that blink." But the steno machine is his own project, independent of Crowd Supply.

Stenotype machines are usually most visible when court reporters are using them. They've been around since the 1800s, when their output was holes in paper tape. Today's versions are essentially chorded keyboards that act as computer input devices. (Douglas Engelbart famously showed off a chorded keyboard during his 1968 Mother of All Demos.) Today you have The Open Steno Project, and Stenosaurus is a member. And while Joshua's project may not have an actual website quite yet, it has an active blog. And the 225 WPM claim? Totally possible. The world record for English language stenography is 360 WPM. And you thought the Dvorak Keyboard was fast. Hah! (Alternate Video Link)

Some people claim that the UNIX learning curve is steep, but at least you only have to climb it once.