By EditorDavid from Slashdot's more-than-one-way-to-do-it department
An anonymous reader writes:
Friday saw this year's first new posts on the Perl Advent Calendar, a geeky tradition first started back in 2000. It describes Santa including Unicode's "Father Christmas" emoji by enabling UTF-8 encoding and then using the appropriate hexadecimal code.
But in another corner of the North Pole, you can also unwrap the Perl 6 Advent Calendar, which this year celebrates the two-year anniversary of the official launch of Perl 6. Its first post follows a Grinch who used the but and does operators in Perl 6, while wrapping methods and subroutines to add extra sneaky features, "and even mutated the language itself to do our bidding."
Perl/Python guru Joel Berger has also started an advent calendar for the Mojolicious web application framework (written in Perl), and there's apparently also an advent calendar coming for the Perl Dancer web application framework.Read Replies (0)
By EditorDavid from Slashdot's 3-2-1-ignition department
An anonymous reader quotes Ars Technica:
Previously, SpaceX founder Elon Musk has said he intends to launch the "silliest thing we can imagine" on the maiden launch of the Falcon Heavy. This is partly because the rocket is experimental -- there is a non-trivial chance the rocket will explode on the launch pad, or shortly after launch. It is also partly because Musk is a master showman who knows how to grab attention. On Friday evening, Musk tweeted what that payload would be -- his "midnight cherry Tesla Roadster."
And the car will be playing Space Oddity, by David Bowie; the song which begins, "Ground Control to Major Tom." Oh, and the powerful Falcon Heavy rocket will send the Tesla into orbit around Mars. "Will be in deep space for a billion years or so if it doesn't blow up on ascent," Musk added. Ars was able to confirm Friday night from a company source that this is definitely a legitimate payload. Earlier on Friday, Musk also said the Falcon Heavy launch would come "next month" from Launch Pad 39A at Kennedy Space Center in Florida, meaning in January.
"No private company has ever launched a spacecraft beyond low-Earth orbit, let alone to another planet," according to the article, adding that SpaceX's new rocket "could play a major role in any plans the agency has to send humans to the Moon." In addition, Musk added on Twitter, "Red car for a red planet."Read Replies (0)
By BeauHD from Slashdot's cheaper-by-the-dozen department
An anonymous reader quotes a report from The Guardian: Electric cars are already cheaper to own and run than petrol or diesel cars in the UK, US and Japan, new research shows. The lower cost is a key factor driving the rapid rise in electric car sales now underway, say the researchers. At the moment the cost is partly because of government support, but electric cars are expected to become the cheapest option without subsidies in a few years. The researchers analyzed the total cost of ownership of cars over four years, including the purchase price and depreciation, fuel, insurance, taxation and maintenance. They were surprised to find that pure electric cars came out cheapest in all the markets they examined: UK, Japan, Texas and California.
Pure electric cars have much lower fuel costs -- electricity is cheaper than petrol or diesel -- and maintenance costs, as the engines are simpler and help brake the car, saving on brake pads. In the UK, the annual cost was about 10% lower than for petrol or diesel cars in 2015, the latest year analyzed. Hybrid cars which cannot be plugged in and attract lower subsidies, were usually a little more expensive than petrol or diesel cars. Plug-in hybrids were found to be significantly more expensive -- buyers are effectively paying for two engines in one car, the researchers said. The exception in this case was Japan, where plug-in hybrids receive higher subsidies. The study has been published in the journal Applied Energy.Read Replies (0)
By BeauHD from Slashdot's wishful-thinking department
General Motors has laid out a plan to not only mass-deploy self-driving cars on public roads in 2019, but to do it profitably. "With a driverless ride-hailing service as its framework, GM is counting on cost reductions, advancements in autonomous technologies and growth of the ride-hailing market to enable a successful self-driving car launch in 2019," reports The Detroit News. From the report: The automaker is using the all-electric Chevrolet Bolt as its autonomous mule, dovetailing Thursday's autonomous projection with GM's earlier vow to roll out a profitable electric vehicle platform by 2021. "For GM to get the benefit they're looking for, they need these cars on the road at scale as soon as possible," said Navigant Research analyst Sam Abuelsamid. "With ride-hailing services, consumers are saved from sticker shock of how much an EV costs -- and the cost of automation in early years is going to be expensive, too." GM didn't say exactly where it plans to launch its driverless ride-hailing service, but identified "dense urban environments" in the presentation. The Detroit automaker's testbeds for the self-driving Bolt are in Warren, San Francisco and Scottsdale, Arizona.Read Replies (0)
By BeauHD from Slashdot's mysterious-material department
hackingbear shares a report from Science Magazine: Results reported by a China-led space science mission provide a tantalizing hint -- but not firm evidence -- for dark matter. In its first 530 days of scientific observations, China's Dark Matter Particle Explorer (DAMPE) detected 1.5 million cosmic ray electrons and positrons above a certain energy threshold. When researchers plot of the number of particles against their energy, they saw hints of an anomalous break in the curve. Now, DAMPE has confirmed that deviation. "It may be evidence of dark matter," but the break in the curve "may be from some other cosmic ray source," says astrophysicist Chang Jin, who leads the collaboration at the Chinese Academy of Science's Purple Mountain Observatory in Nanjing. DAMPE's life span will be extended to 5 years given the excellent conditions of this Chinese spacecraft, then it can record over 10 billion cosmic events, allowing researchers to confirm if it is indeed dark matter. Perhaps more significantly, the first observational data produced by China's first mission dedicated to astrophysics shows that the country is set to become a force in space science, says David Spergel, an astrophysicist at Princeton University. China is now "making significant contributions to astrophysics and space science," he says. The DAMPE results appear online in the journal Nature.Read Replies (0)
By BeauHD from Slashdot's insane-in-the-membrane department
An anonymous reader quotes a report from Inverse: In the new paper, presented Thursday at the annual meeting of the Radiological Society of North America, a team of radiologists at Korea University report that smartphone addiction changes teenagers' brains. Using brain imaging, they argue that smartphone- and internet-addicted teenagers have imbalanced brain chemistry when compared to their peers who aren't addicted to smartphones or the internet. But scientists not involved with the study have some serious issues with their research. Perhaps the most important of these issues is the fact that "smartphone addiction" is not a scientifically established thing -- at least not yet.
In the study, the team led by Dr. Hyung Suk Seo used "standardized internet and smartphone addiction tests to measure the severity of internet addiction" in nine boys and 10 girls, according to a statement. Then, they used MRS, a brain imaging technique that can identify particular brain chemicals, to examine the participants' brains before and after taking nine weeks of cognitive behavioral therapy to help their "addiction." Compared to a control group, the "smartphone addicts" had skewed levels of neurotransmitters in their brains. In particular, they had a higher ratio of GABA to Glx (glutamateglutamine), which are respectively responsible for slowing down brain signals and exciting neurons. An elevated ratio of GABA to Glx, the researchers concluded, can be associated with the self-reported symptoms of the "smartphone addict" teens, including depression, anxiety, insomnia severity and impulsivity. After 12 of the teens participated in cognitive behavior therapy, the scientists report, their chemical imbalances appeared to even out to look more like the control group's.Read Replies (0)
By BeauHD from Slashdot's free-to-use department
dmoberhaus writes: Motherboard's Daniel Oberhaus spoke to Denver Gingerich, the programmer behind Sopranica, a DIY, community-oriented cell phone network. "Sopranica is a project intended to replace all aspects of the existing cell phone network with their freedom-respecting equivalents," says Gingerich. "Taking out all the basement firmware on the cellphone, the towers that track your location, the payment methods that track who you are and who owns the number, and replacing it so we can have the same functionality without having to give up all the privacy that we have to give up right now. At a high level, it's about running community networks instead of having companies control the cell towers that we connect to." Motherboard interviews Gingerich and shows you how to use the network to avoid cell surveillance. According to Motherboard, all you need to do to join Sopranica is "create a free and anonymous Jabber ID, which is like an email address." Jabber is slang for a secure instant messaging protocol called XMPP that let's you communicate over voice and text from an anonymous phone number. "Next, you need to install a Jabber app on your phone," reports Motherboard. "You'll also need to install a Session Initiation Protocol (SIP) app, which allows your phone to make calls and send texts over the internet instead of the regular cellular network." Lastly, you need to get your phone number, which you can do by navigating to Sopranica's JMP website. (JMP is the code, which was published by Gingerich in January, and "first part of Sopranica.") "These phone numbers are generated by Sopranica's Voice Over IP (VOIP) provider which provides talk and text services over the internet. Click whichever number you want to be your new number on the Sopranica network and enter your Jabber ID. A confirmation code should be sent to your phone and will appear in your Jabber app." As for how JMP protects against surveillance, Gingerich says, "If you're communicating with someone using your JMP number, your cell carrier doesn't actually know what your JMP number is because that's going over data and it's encrypted. So they don't know that that communication is happening."Read Replies (0)
By BeauHD from Slashdot's fish-out-of-water department
Tesla has been removed from Germany's list of electric cars eligible for subsidies because its Model S sedan is too expensive for the scheme. Tesla customers cannot order the Model S base version without extra features that pushed the car above the 60,000 euro ($71,500) price limit, a spokesman for the German Federal Office for Economic Affairs and Export Controls (BAFA) said on Friday. From the report: Germany last year launched the incentive scheme worth about 1 billion euros, partly financed by the German car industry, to boost electric car usage. A price cap was included to exempt premium models. "This is a completely false accusation. Anyone in Germany can order a Tesla Model S base version without the comfort package, and we have delivered such cars to customers," Tesla said in a statement. The carmaker said the upper price limit was initially set by the German government to exclude Tesla, but later a compromise was reached "that allows Tesla to sell a low option vehicle that qualifies for the incentive and customers can subsequently upgrade if they wish." It said, however, it would investigate whether any car buyers were denied the no-frills version. Under the subsidy scheme, buyers get 4,000 euros off their all-electric vehicle purchase and 3,000 euros off plug-in hybrids.Read Replies (0)
By BeauHD from Slashdot's luck-of-the-draw department
According to a PC Magazine report that uses data from Cellular Insights, the Qualcomm-powered iPhone X has better LTE performance than the Intel-powered model. From the report: There are three iPhone X models sold globally. Using lab equipment, Cellular Insights tested two of them: the Qualcomm-powered A1865, sold by Sprint, Verizon, and U.S. Cellular and in Australia, China, and India; and the Intel-powered A1901, sold by most other global carriers including AT&T and T-Mobile. (The third model, A1902, is only sold in Japan.) Here in the U.S., we anticipate that the SIM-free model sold directly by Apple will be the A1865, as that's the model that supports all four U.S. carriers. For this test, Cellular Insights looked at performance on LTE Band 4, which is used by every major U.S. carrier except Sprint, as well as in Canada and parts of Latin America. Cellular Insights attenuated an LTE signal from a strong -85dBm until the modems showed no performance. While both modems started out with 195Mbps of download throughput on a 20MHz carrier, the Qualcomm difference appeared quickly, as the Intel modem dropped to 169Mbps at -87dBm. The Qualcomm modem took an additional -6dBm of attenuation to get to that speed. Most consumers will feel the difference in very weak signal conditions, where every dBm of signal matters, so we zoomed in on that in the chart below. At very weak signal strength, below -120dBm, the Qualcomm modem got speeds on average 67 percent faster than the Intel modem. The Intel modem finally died at -129dBm and the Qualcomm modem died at -130dBm, so we didn't find a lot of difference in when the modems finally gave out.Read Replies (0)
By BeauHD from Slashdot's mix-and-match department
An anonymous reader quotes a report from The Outline: Coditany of Timeness" is a convincing lo-fi black metal album, complete with atmospheric interludes, tremolo guitar, frantic blast beats and screeching vocals. But the record, which you can listen to on Bandcamp, wasn't created by musicians. Instead, it was generated by two musical technologists using a deep learning software that ingests a musical album, processes it, and spits out an imitation of its style. To create Coditany, the software broke "Diotima," a 2011 album by a New York black metal band called Krallice, into small segments of audio. Then they fed each segment through a neural network -- a type of artificial intelligence modeled loosely on a biological brain -- and asked it to guess what the waveform of the next individual sample of audio would be. If the guess was right, the network would strengthen the paths of the neural network that led to the correct answer, similar to the way electrical connections between neurons in our brain strengthen as we learn new skills.Read Replies (0)
By msmash from Slashdot's amazeballs department
If you tried to start a car that's been sitting in a garage for decades, you might not expect the engine to respond. But a set of thrusters aboard the Voyager 1 spacecraft successfully fired up Wednesday after 37 years without use. NASA announces: Voyager 1, NASA's farthest and fastest spacecraft, is the only human-made object in interstellar space, the environment between the stars. The spacecraft, which has been flying for 40 years, relies on small devices called thrusters to orient itself so it can communicate with Earth. These thrusters fire in tiny pulses, or "puffs," lasting mere milliseconds, to subtly rotate the spacecraft so that its antenna points at our planet. Now, the Voyager team is able to use a set of four backup thrusters, dormant since 1980. "With these thrusters that are still functional after 37 years without use, we will be able to extend the life of the Voyager 1 spacecraft by two to three years," said Suzanne Dodd, project manager for Voyager at NASA's Jet Propulsion Laboratory, Pasadena, California.Read Replies (0)
By BeauHD from Slashdot's changing-times department
schwit1 shares a report from MIT Technology Review: Blockchain technology can eliminate the need for companies and other organizations to maintain centralized repositories of identifying information, and users can gain permanent control over who can access their data (hence "self-sovereign"), says Drummond Reed, chief trust officer at Evernym, a startup that's developing a blockchain network specifically for managing digital identities. Self-sovereign identity systems rely on public-key cryptography, the same kind that blockchain networks use to validate transactions. Although it's been around for decades, the technology has thus far proved difficult to implement for consumer applications. But the popularity of cryptocurrencies has inspired fresh commercial interest in making it more user-friendly.
Public-key cryptography relies on pairs of keys, one public and one private, which are used to authenticate users and verify their encrypted transactions. Bitcoin users are represented on the blockchain by strings of characters called addresses, which are derived from their public keys. The "wallet" applications they use to hold and exchange digital coins are essentially management systems for their private keys. Just like a real wallet, they can also hold credentials that serve as proof of identification, says Reed. Using a smartphone or some other device, a person could use a wallet-like application to manage access to these credentials. But will regular consumers buy in? Technologists will need to create a form factor and user experience compelling enough to convince them to abandon their familiar usernames and passwords, says Meltem Demirors, development director at Digital Currency Group, an investment firm that funds blockchain companies. The task calls for reinforcements, she says: "The geeks are working on it right now, but we need the designers, we need the sociologists, and we need people who study ethics of technology to participate."Read Replies (0)
By msmash from Slashdot's closer-look department
Even as more people than ever are tuning to Netflix, Hulu, Amazon Prime and other streaming services to look, piracy too continues to thrive, a research suggests. An anonymous reader shares a report: Intrigued by this interplay of legal and unauthorized viewing, researchers from Carnegie Mellon University and Universidade Catolica Portuguesa carried out an extensive study. They partnered with a major telco, which is not named, to analyze if BitTorrent downloading habits can be changed by offering legal alternatives. The researchers used a piracy-tracking firm to get a sample of thousands of BitTorrent pirates at the associated ISP. Half of them were offered a free 45-day subscription to a premium TV and movies package, allowing them to watch popular content on demand. To measure the effects of video-on-demand access on piracy, the researchers then monitored the legal viewing activity and BitTorrent transfers of the people who received the free offer, comparing it to a control group. The results show that piracy is harder to beat than some would expect. Subscribers who received the free subscription watched more TV, but overall their torrenting habits didn't change significantly. "We find that, on average, households that received the gift increased overall TV consumption by 4.6% and reduced Internet downloads and uploads by 4.2% and 4.5%, respectively. However, and also on average, treated households did not change their likelihood of using BitTorrent during the experiment," the researchers write.Read Replies (0)
By msmash from Slashdot's end-of-an-era department
Not too long after Linus Torvalds wrote his own Unix kernel, which he called Linux, in the summer of 1991, a magazine was founded by enthusiasts to focus on the operating system. For more than two decades Linux Journal has been an authority magazine on all things Linux, often cited by mainstream outlets, but it is now shuttering doors. In a blog post, Linux Journal's Carlie Fairchild writes: It looks like we're at the end, folks. If all goes according to a plan we'd rather not have, the November issue of Linux Journal was our last. The simple fact is that we've run out of money, and options along with it. We never had a wealthy corporate parent or deep pockets of our own, and that made us an anomaly among publishers, from start to finish. While we got to be good at flying close to the ground for a long time, we lost what little elevation we had in November, when the scale finally tipped irrevocably to the negative. Thanks for all the fish.Read Replies (0)
By msmash from Slashdot's fighting-back department
Well, now we know what paid for all those programmers cranking out the overhauled Firefox Quantum browser: a major infusion of new money. From a report: Mozilla, the nonprofit behind the open-source web browser, saw its 2016 revenue increase 24 percent to an all-time high of $520 million, it said Friday. Expenses grew too, but not as much, from $361 million to $337 million, so the organization's war chest is significantly bigger now. Mozilla, which now has about 1,200 employees, releases prior-year financial results in conjunction with tax filings. Most of Mozilla's money comes from partnerships with search engines like Google, Yahoo, DuckDuckGo, Baidu and Yandex. When you search through Firefox's address bar, those search engines show search ads alongside results and share a portion of the revenue to Mozilla. Mozilla in 2014 signed a major five-year deal with Yahoo to be the default search engine in the US, but canceled it only three years in and moved back to Google instead in November. Mozilla's mission -- to keep the internet open and a place where you aren't in the thrall of tech giants -- may seem abstract. But Mozilla succeeded in breaking the lock Microsoft's Internet Explorer had on the web a decade ago, and now it's fighting the same battle again against Google's Chrome.Read Replies (0)