Slashdot is powered by your submissions, so send in your scoop

 



Forgot your password?
typodupeerror
×

Why BART Is Falling Apart 474

HughPickens.com writes: Matthias Gafni writes in the San Jose Mercury News that the engineers who built BART, the rapid transit system serving the San Francisco Bay Area that started operation in 1972, used principles developed for the aerospace industry rather than tried-and-true rail standards. And that's the trouble. "Back when BART was created, (the designers) were absolutely determined to establish a new product, and they intended to export it around the world," says Rod Diridon. "They may have gotten a little ahead of themselves using new technology. Although it worked, it was extremely complex for the time period, and they never did export the equipment because it was so difficult for other countries to install and maintain." The Space Age innovations have made it more challenging for the transit agency to maintain the BART system from the beginning. Plus, the aging system was designed to move 100,000 people per week and now carries 430,000 a day, so the loss of even a single car gets magnified with crowded commutes, delays and bus bridges. For example, rather than stick to the standard rail track width of 4 feet, 8.5 inches, BART engineers debuted a 5-foot, 6-inch width track, a gauge that remains to this day almost exclusive to the system. Industry experts say the unique track width necessitates custom-made wheel sets, brake assemblies and track repair vehicles.

Another problem is the dearth of readily available replacement parts for BART's one-of-a-kind systems. Maintenance crews often scavenge parts from old, out-of-service cars to avoid lengthy waits for orders to come in; sometimes mechanics are forced to manufacture the equipment themselves. "Imagine a computer produced in 1972," says David Hardt. "No one is supporting that old equipment any longer, but those same microprocessors are what we have controlling our logic systems." Right now BART needs 100 thyristors at a total cost of $100,000. BART engineers said it could take 22 weeks to ship them to the San Francisco Bay Area to replace in BART's "C" cars, which make up the older cars in the fleet. Right now, the agency has none. Nick Josefowitz says it makes no sense to dwell on design decisions made a half-century ago. "I think we need to use what we have today and build off that, rather than fantasize what could have been done in the past. The BART system was state of the art when it was built, and now it's technologically obsolete and coming to the end of its useful life."

Submission + - Facebook Testing Anti-Impersonation Feature

Trailrunner7 writes: Phishing and account takeover attacks take many forms, especially on massive platforms such as Twitter or Facebook, and defending against them is a tall order. Facebook has tried a number of tactics over the years, and now the company is testing a new feature that will detect and warn users when someone else is trying to impersonate them on the network.

The system is designed to address a difficult problem on social networks: impostors. Many social media platforms allow anonymity in some form or another, but some, like Twitter, have adjusted those policies over time to require real names and identities. As more and more people connect their online identities to their real-world lives in various ways, the problem of online impostors has become a much more serious one. An attacker who has the ability to put together a convincing false account for someone else can cause serious damage to the victim’s personal and perhaps professional life.

Feed Google News Sci Tech: The Oculus Rift Is Here, but Virtual Reality Is Still Rough Around the Edges - New York Times (google.com)


New York Times

The Oculus Rift Is Here, but Virtual Reality Is Still Rough Around the Edges
New York Times
Microsoft Created a Twitter Bot to Learn From Users. It Quickly Became a Racist Jerk. Chip-Card Payment System Delays Frustrate Retailers. Loading... See next articles. See previous articles. Personal Tech. Site Navigation. Home Page Home Page World.
Oculus Rift VR headset review: The magical, yet unfinished birth of virtual realityPCWorld
Review: Oculus Rift Is Expensive, Complicated, and Totally WonderfulTIME
Oculus Rift Review: VR's Rising Star Isn't Ready for the MainstreamWall Street Journal
WIRED-USA TODAY-Gizmodo-The Verge
all 141 news articles

AT&T

Zero-Rating Harms Poor People, Public Interest Groups Tell FCC (vice.com) 205

An anonymous reader links to an article on Motherboard: The nation's largest internet service providers are undermining US open internet rules, threatening free speech, and disproportionately harming poor people by using a controversial industry practice called "zero-rating," a coalition of public interest groups wrote in a letter to federal regulators on Monday. Companies like Comcast, Verizon and AT&T use zero-rating, which refers to a variety of practices that exempt certain services from monthly data caps, to undercut "the spirit and the text" of federal rules designed to protect net neutrality, the principle that all content on the internet should be equally accessible, the groups wrote. Zero-rated plans "distort competition, thwart innovation, threaten free speech, and restrict consumer choice -- all harms the rules were meant to prevent," the groups wrote. "These harms tend to fall disproportionately on low-income communities and communities of color, who tend to rely on mobile networks as their primary or exclusive means of access to the internet."

Submission + - Zero-Rating Harms Poor People, Public Interest Groups Tell FCC (vice.com)

An anonymous reader writes: The nation’s largest internet service providers are undermining US open internet rules, threatening free speech, and disproportionately harming poor people by using a controversial industry practice called “zero-rating,” a coalition of public interest groups wrote in a letter to federal regulators on Monday.

Companies like Comcast, Verizon and AT&T use zero-rating, which refers to a variety of practices that exempt certain services from monthly data caps, to undercut “the spirit and the text” of federal rules designed to protect net neutrality, the principle that all content on the internet should be equally accessible, the groups wrote.

The letter, which was signed by the Center for Media Justice, the Open Technology Institute, Free Press, and dozens of other groups, increases the pressure on the Federal Communications Commission to address zero-rating, which has become the latest battlefront in the decade-long war between policymakers, industry giants, and consumer advocates over how best to ensure internet openness.

Zero-rated plans “distort competition, thwart innovation, threaten free speech, and restrict consumer choice—all harms the rules were meant to prevent,” the groups wrote. “These harms tend to fall disproportionately on low income communities and communities of color, who tend to rely on mobile networks as their primary or exclusive means of access to the internet.”

Submission + - Human spaceflight set to return to the Kennedy Space Center in 2017 (blastingnews.com)

MarkWhittington writes: When the space shuttle program ended in 2011, it was considered an end of an era for human space flight, according to the Orlando Sentinel. The Kennedy Space Center was hit especially hard, with layoffs decimating the workforce that used to support shuttle missions. However, things are starting to turn around, with more launches occurring in 2015 than had happened on the space coast since 2003. 2017 will see that return of human spaceflight to the Kennedy Space Center as both Boeing and SpaceX will start testing its commercial crew vehicles in anticipation of operations to and from the International Space Station starting in 2018. For the past five years, human space flight has been outsourced to Russia at great expense.
Cellphones

Ask Slashdot: How Do You Deal With Glare On Cellphones? 135

An anonymous reader writes: As far as I know, I am not particularly sensitive to glare; I've used CRTs in offices full of overhead fluorescent lights, and just ignored the terrible reflections, and I've worked in places where the natural sunlight cleverly funneled in by architects was bounced around by glass walls and mirrors in just the right way to irritate. Still, I never found it much of a problem. Now, though, I work in a field that has me both working outdoors a lot, and traveling by car a fair amount, too. Now that days are getting longer, especially up here in the Pacific Northwest, I know that I'll be squinting and cursing a lot at my phone. My question(s): Are there are any modern smart phones you can recommend with a truly or even passably day-light readable screen? I don't care if it's e-ink (that would be cool), transflective (long promised!) or maybe just a secondary screen with some daylight-readable technology. Barring that, how do you deal with glare on a phone, when you need to use it on a sunny day? Same answer could apply to laptop use, I suppose. Do you build a little glare shield, of the kind that camera operators use? Wear a giant hood of privacy and darkness? I know I'm not alone — I see lots of others squinting and cursing at their cell phones, cupping it with their hands at their eyes, or ducking into scant shade just to see whether the call that's coming is one they need to take, or to read a text. I've tried quite a few phones that have been praised by reviewers for their bright, crisp, daylight-friendly displays, but I think those reviewers probably lived in New York or San Francisco, and were reading in either shadow or fog, because even the brightest Samsungs, Motorolas, and LGs I've seen cannot hold a candle to the summer sun north of Seattle.

Submission + - Microsoft Breaks System File Checker Utility

jones_supa writes: Another lemon hits Windows quality assurance team. The operating system comes with a useful tool called System File Checker (sfc.exe) that can be used to verify the integrity of system files, and if any corrupted files are found, they can be replaced with original copies from a hive. Microsoft has recently acknowledged a bug with SFC in Windows 10 version 1511 (November Update), explaining that the company is already working on a fix that should be released very soon. Currently the error message "Windows Resource Protection found corrupt files but was unable to fix some of them." can be a false alarm. When you install Windows, it drops in a certain version of opencl.dll. However hardware drivers may also install their own replacement version of opencl.dll. SFC does not take this into account.
Handhelds

Ubuntu Tablet Now Available For Pre-Order 81

prisoninmate writes: During last month's MWC 2016 event, Canonical had the BQ Aquaris M10 Ubuntu Edition tablet on display at their huge booth, along with the superb Meizu PRO 5 Ubuntu Edition smartphone, and the Sony Xperia Z1 and OnePlus One Ubuntu Phones. The company teased users last week with the availability for pre-order of the first ever Ubuntu tablet for March 28, and that day has arrived. Probably the most important aspect of the BQ Aquaris M10 Ubuntu Edition tablet, which interested many users, was the price, and we can tell you now that it costs €289.90 for the Full HD version, and €249.90 for the HD model. It can be pre-ordered now from BQ's online store.
The Military

Slaughter At The Bridge: Uncovering A Colossal Bronze Age Battle (sciencemag.org) 135

schwit1 quotes a report from the American Association for the Advancement of Science via Sciencemag.org: About 3200 years ago, two armies clashed at a river crossing near the Baltic Sea. The confrontation can't be found in any history books -- the written word didn't become common in these parts for another 2000 years -- but this was no skirmish between local clans. Thousands of warriors came together in a brutal struggle, perhaps fought on a single day, using weapons crafted from wood, flint, and bronze, a metal that was then the height of military technology. "If our hypothesis is correct that all of the finds belong to the same event, we're dealing with a conflict of a scale hitherto completely unknown north of the Alps," says dig co-director Thomas Terberger, an archaeologist at the Lower Saxony State Service for Cultural Heritage in Hannover. "There's nothing to compare it to." It may even be the earliest direct evidence -- with weapons and warriors together -- of a battle this size anywhere in the ancient world.

Submission + - Ubuntu Tablet Is Now Available for Pre-Order

prisoninmate writes: During last month's MWC 2016 event, Canonical had the BQ Aquaris M10 Ubuntu Edition tablet on display at their huge booth, along with the superb Meizu PRO 5 Ubuntu Edition smartphone, and the Sony Xperia Z1 and OnePlus One Ubuntu Phones. The company teased users last week with the availability for pre-order of the first ever Ubuntu tablet for March 28, and that day has arrived. Probably the most important aspect of the BQ Aquaris M10 Ubuntu Edition tablet, which interested many users, was the price, and we can tell you now that it costs €289.90 for the Full HD version, and €249.90 for the HD model. It can be pre-ordered now from BQ's online store.
Earth

Volcano Erupts In Southwest Alaska, Sending Ash 20,000 Feet (google.com) 76

USA Today reports that according to the U.S. Geological Survey, the Pavlov Volcano, "about 600 miles southwest of Anchorage, erupted at 4:18 p.m. local time. The agency says the eruption also led to tremors on the ground. ... The USGS has raised the volcano alert level to "Warning" and the aviation warning to 'Red.'" Television station KTUU of Anchorage has a few photos of the emerging ash plume, which has so far risen to about 20,000 feet (hence that aviation warning).

Slashdot Top Deals

We gave you an atomic bomb, what do you want, mermaids? -- I. I. Rabi to the Atomic Energy Commission

Working...