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Transportation

How Uber Surge Pricing Really Works 12

Posted by timothy
from the has-a-catchy-name-regardless dept.
minstrelmike writes with this analysis from Nicholas Diakopoulos of the Washington Post: At the core of Uber's wild success and market valuation of over $41 billion is its data and algorithmically fueled approach to matching supply and demand for cars. It's classic economics, supposedly....but is Uber's surge pricing algorithm really doing what they claim? Do surge prices really get more cars on the road?

My analysis suggests that rather than motivating a fresh supply of drivers, surge pricing instead re-distributes drivers already on the road.
Adds minstrelmike: The writer goes on to analyze 4 weeks of pricing info from 5 areas in D.C. and plotted prices versus wait times. "Price surging can work in any of three ways: by reducing demand for cars (less people want a car for a higher price), by creating new supply (providing an incentive for new drivers to hit the roads), or by shifting supply (drivers) to areas of higher demand."

It moves current drivers from one side of town to the other. It does not put new drivers on the road. It can't because the prices change every 3-5 minutes."

+ - How Uber Surge Pricing Really Works->

Submitted by minstrelmike
minstrelmike (1602771) writes ""At the core of Uber’s wild success and market valuation of over $41 billion is its data and algorithmically fueled approach to matching supply and demand for cars. It’s classic economics, supposedly....but is Uber’s surge pricing algorithm really doing what they claim? Do surge prices really get more cars on the road?

My analysis suggests that rather than motivating a fresh supply of drivers, surge pricing instead re-distributes drivers already on the road."

The writer goes on to analyze 4 weeks of pricing info from 5 areas in D.C. and plotted prices versus wait times. "Price surging can work in any of three ways: by reducing demand for cars (less people want a car for a higher price), by creating new supply (providing an incentive for new drivers to hit the roads), or by shifting supply (drivers) to areas of higher demand."

It moves current drivers from one side of town to the other. It does not put new drivers on the road. It can't because the prices change every 3-5 minutes."

Link to Original Source

+ - New Nudge Technology Prods You to Take Action

Submitted by HughPickens.com
HughPickens.com (3830033) writes "Natasha Singer reports at the NYT on a new generation of devices whose primary function is to prod people to change. This new category of nudging technology includes “hydration reminder” apps like Waterlogged that exhort people to increase their water consumption; the HAPIfork, a utensil that vibrates and turns on a light indicator when people eat too quickly; and Thync, “neurosignaling” headgear that delivers electrical pulses intended to energize or relax people. “There is this dumbing-down, which assumes people do not want the data, they just want the devices to help them,” says Natasha Dow Schüll. “It is not really about self-knowledge anymore. It’s the nurselike application of technology.” While some self-zapping gizmos may resemble human cattle prods, other devices use more complex cues to encourage people to adopt new behavior. For example, the Muse, a brain-wave monitoring headband, is intended to help people understand their state of mind by playing different sounds depending on whether they are distracted or calm. “Based on what it registers, it plays loud, disruptive wind or waves lapping or, if you are supercalm and you maintain it for a while, you get calm, lovely noises of birds tweeting,” says Schüll. “You do learn to calm your mind.

But do the new self-tracking and self-improvement technologies benefit people or just create more anxiety? An article published in The BMJ, a British medical journal, describes healthy people who use self-tracking apps as “young, asymptomatic, middle-class neurotics continuously monitoring their vital signs while they sleep.” Dr. Des Spence argues that many health tracking apps encouraged healthy people to unnecessarily record their normal activities and vital signs — turning users into continuously self-monitoring “neurotics.” Spence recommends people view these new technologies with skepticism. “The truth is that these apps and devices are untested and unscientific, and they will open the door of uncertainty,” says Spence. “Make no mistake: Diagnostic uncertainty ignites extreme anxiety in people.”"
Star Wars Prequels

Star Wars Battlefront Game Trailer Is So Realistic It Looks Like Movie Footage 59

Posted by timothy
from the cgi-is-cheaper-than-actors dept.
MojoKid writes It has been a tremendous week for Star Wars fans. First we got to see Han Solo and Chewbacca make an emotional reappearance in the newest Star Wars: The Force Awakens trailer (the second official trailer Disney has put out). Now, Electronic Arts is treating us to a visual smorgasbord of cinema-quality footage showing the forthcoming Star Wars Battlefront game. Battlefront will support to up 40 players divided between the Rebel Alliance and Galactic Empire, all shooting it out and playing with some of the coolest Star Wars vehicles and weapons around. We're talking jetpacks, AT-AT war machines, AT-STs, TIE Fighters, X-wings, and more. Though the trailer allegedly shows actually "game engine footage," it's questionable whether or not it's actual gameplay or just pre-rendered cut scenes from the game engine. Either way, it's still pretty impressive.

Google News Sci Tech: Steam Limits Users Who Haven't Spent $5 to Prevent Spam, Phishing - GameSpot->

From feed by feedfeeder

GameSpot

Steam Limits Users Who Haven't Spent $5 to Prevent Spam, Phishing
GameSpot
Valve has introduced a new policy that aims to reduce cases of spam and phishing on Steam by limiting what users can do before they spend at least $5 on the digital games distribution platform. "Malicious users often operate in the community on accounts...
Accessing all features on Steam will cost you at least $5Delhi Daily News
If you want to chat on Steam, spend at least $5Engadget
Steam Now Limits Users Accounts Based On Purchase HistoryAttack of the Fanboy
Gamasutra-games.on.net
all 19 news articles

Link to Original Source
Power

Utilities Battle Homeowners Over Solar Power 114

Posted by timothy
from the one-hand-giveth dept.
HughPickens.com writes Diane Cardwell reports in the NYT that many utilities are trying desperately to stem the rise of solar power, either by reducing incentives, adding steep fees or effectively pushing home solar companies out of the market. The economic threat has electric companies on edge. Over all, demand for electricity is softening while home solar is rapidly spreading across the country. There are now about 600,000 installed systems, and the number is expected to reach 3.3 million by 2020, according to the Solar Energy Industries Association. In Hawaii, the current battle began in 2013, when Hawaiian Electric started barring installations of residential solar systems in certain areas. It was an abrupt move — a panicked one, critics say — made after the utility became alarmed by the technical and financial challenges of all those homes suddenly making their own electricity. "Hawaii is a postcard from the future," says Adam Browning, executive director of Vote Solar, a policy and advocacy group based in California.

But utilities say that solar-generated electricity flowing out of houses and into a power grid designed to carry it in the other direction has caused unanticipated voltage fluctuations that can overload circuits, burn lines and lead to brownouts or blackouts. "At every different moment, we have to make sure that the amount of power we generate is equal to the amount of energy being used, and if we don't keep that balance things go unstable," says Colton Ching, vice president for energy delivery at Hawaiian Electric, pointing to the illuminated graphs and diagrams tracking energy production from wind and solar farms, as well as coal-fueled generators in the utility's main control room. But the rooftop systems are "essentially invisible to us," says Ching, "because they sit behind a customer's meter and we don't have a means to directly measure them." The utility wants to cut roughly in half the amount it pays customers for solar electricity they send back to the grid. "Hawaii's case is not isolated," says Massoud Amin. "When we push year-on-year 30 to 40 percent growth in this market, with the number of installations doubling, quickly — every two years or so — there's going to be problems."

+ - Utilities Battle Homeowners Over Solar Power

Submitted by HughPickens.com
HughPickens.com (3830033) writes "Diane Cardwell reports in the NYT that many utilities are trying desperately to stem the rise of solar power, either by reducing incentives, adding steep fees or effectively pushing home solar companies out of the market. The economic threat has electric companies on edge. Over all, demand for electricity is softening while home solar is rapidly spreading across the country. There are now about 600,000 installed systems, and the number is expected to reach 3.3 million by 2020, according to the Solar Energy Industries Association. In Hawaii, the current battle began in 2013, when Hawaiian Electric started barring installations of residential solar systems in certain areas. It was an abrupt move — a panicked one, critics say — made after the utility became alarmed by the technical and financial challenges of all those homes suddenly making their own electricity. “Hawaii is a postcard from the future,” says Adam Browning, executive director of Vote Solar, a policy and advocacy group based in California.

But utilities say that solar-generated electricity flowing out of houses and into a power grid designed to carry it in the other direction has caused unanticipated voltage fluctuations that can overload circuits, burn lines and lead to brownouts or blackouts. “At every different moment, we have to make sure that the amount of power we generate is equal to the amount of energy being used, and if we don’t keep that balance things go unstable,” says Colton Ching, vice president for energy delivery at Hawaiian Electric, pointing to the illuminated graphs and diagrams tracking energy production from wind and solar farms, as well as coal-fueled generators in the utility’s main control room. But the rooftop systems are “essentially invisible to us,” says Ching, “because they sit behind a customer’s meter and we don’t have a means to directly measure them.” The utility wants to cut roughly in half the amount it pays customers for solar electricity they send back to the grid. “Hawaii’s case is not isolated,” says Massoud Amin. “When we push year-on-year 30 to 40 percent growth in this market, with the number of installations doubling, quickly — every two years or so — there’s going to be problems.”"
The Courts

DIA Polygraph Countermeasure Case Files Leaked 30

Posted by timothy
from the well-someone-is-fibbing dept.
George Maschke writes AntiPolygraph.org (of which I am a co-founder) has published a set of leaked Defense Intelligence Agency polygraph countermeasure case files along with a case-by-case analysis. The case files, which include polygraph charts and the exact questions used, suggest that the only people being "caught" trying to beat the polygraph are those using crude, unsophisticated methods that anyone who actually understood polygraph procedure and effective countermeasures (like, say, a real spy, saboteur, or terrorist) would ever use. AntiPolygraph.org has previously published polygraph community training materials on countermeasures that indicate they lack the ability to detect countermeasures like those described in our free book, The Lie Behind the Lie Detector (PDF) or in former police polygraph examiner Doug Williams' manual, How to Sting the Polygraph . Williams, who was indicted last year after teaching undercover federal agents how to pass a polygraph, is scheduled to stand trial on May 12 in Oklahoma City.
Cellphones

Does Lack of FM Support On Phones Increase Your Chances of Dying In a Disaster? 193

Posted by timothy
from the well-if-you-put-it-that-way dept.
theodp writes You may not know it," reports NPR's Emma Bowman, "but most of today's smartphones have FM radios inside of them. But the FM chip is not activated on two-thirds of devices. That's because mobile makers have the FM capability switched off. The National Association of Broadcasters has been asking mobile makers to change this. But the mobile industry, which profits from selling data to smartphone users, says that with the consumer's move toward mobile streaming apps, the demand for radio simply isn't there." But FEMA Administrator Craig Fugate says radio-enabled smartphones could sure come in handy during times of emergency. So, is it irresponsible not to activate the FM chips? And should it's-the-app-way-or-the-highway Apple follow Microsoft's lead and make no-static-at-all FM available on iPhones?

+ - Is iPhone's Lack of FM Support Increasing Your Chances of Dying in a Disaster?

Submitted by theodp
theodp (442580) writes ""You may not know it," reports NPR's Emma Bowman, "but most of today's smartphones have FM radios inside of them. But the FM chip is not activated on two-thirds of devices. That's because mobile makers have the FM capability switched off. The National Association of Broadcasters has been asking mobile makers to change this. But the mobile industry, which profits from selling data to smartphone users, says that with the consumer's move toward mobile streaming apps, the demand for radio simply isn't there." But FEMA Administrator Craig Fugate says radio-enabled smartphones could sure come in handy during times of emergency. So, is it irresponsible not to activate the FM chips? And should it's-the-app-way-or-the-highway Apple follow Microsoft's lead and make no-static-at-all FM available on iPhones?"
The Military

US Military To Recruit Civilian Cybersecurity Experts 50

Posted by timothy
from the which-masters-would-you-prefer? dept.
An anonymous reader writes The U.S. Army is to create a new cybersecurity division, Cyber Branch 17, and is also considering launching a cyber career track for civilians, according to an announcement made this week by Lt. Gen. Edward C. Cardon. Cardon, who currently heads the U.S. Army's cyber command, ARCYBER, spoke to the Senate Armed Services subcommittee on Tuesday about the growing threats and capabilities used in cyber warfare. He argued that creating a cyber career management field for civilians would result in an easier recruitment process, as opposed to recruiting internally and trying to retain the talent, he said. Cardon maintains that recruiting and retaining talent in the field is often challenging, given internal employment constraints surrounding compensation and slow hiring processes.

+ - U.S. military to recruit civilian cybersecurity experts->

Submitted by Anonymous Coward
An anonymous reader writes "The U.S. Army is to create a new cybersecurity division, Cyber Branch 17, and is also considering launching a cyber career track for civilians, according to an announcement made this week by Lt. Gen. Edward C. Cardon. Cardon, who currently heads the U.S. Army’s cyber command, ARCYBER, spoke to the Senate Armed Services subcommittee on Tuesday about the growing threats and capabilities used in cyber warfare. He argued that creating a cyber career management field for civilians would result in an easier recruitment process, as opposed to recruiting internally and trying to retain the talent, he said. Cardon maintains that recruiting and retaining talent in the field is often challenging, given internal employment constraints surrounding compensation and slow hiring processes."
Link to Original Source
The Courts

FBI Overstated Forensic Hair Matches In Nearly All Trials Before 2000 103

Posted by timothy
from the why-the-house-wins-so-often dept.
schwit1 writes The Justice Department and FBI have formally acknowledged that nearly every examiner in an elite FBI forensic unit gave flawed testimony in almost all trials in which they offered evidence against criminal defendants over more than a two-decade period before 2000. Of 28 examiners with the FBI Laboratory's microscopic hair comparison unit, 26 overstated forensic matches in ways that favored prosecutors in more than 95 percent of the 268 trials reviewed so far, according to the National Association of Criminal Defense Lawyers (NACDL) and the Innocence Project, which are assisting the government with the country's largest post-conviction review of questioned forensic evidence. The cases include those of 32 defendants sentenced to death. Of those, 14 have been executed or died in prison, the groups said under an agreement with the government to release results after the review of the first 200 convictions.
Google

Google To Propose QUIC As IETF Standard 62

Posted by timothy
from the ok-now-do-it-this-way dept.
As reported by TechCrunch, "Google says it plans to propose HTTP2-over-QUIC to the IETF as a new Internet standard in the future," having disclosed a few days ago that about half of the traffic from Chrome browsers is using QUIC already. From the article: The name "QUIC" stands for Quick UDP Internet Connection. UDP's (and QUIC's) counterpart in the protocol world is basically TCP (which in combination with the Internet Protocol (IP) makes up the core communication language of the Internet). UDP is significantly more lightweight than TCP, but in return, it features far fewer error correction services than TCP. ... That's why UDP is great for gaming services. For these services, you want low overhead to reduce latency and if the server didn't receive your latest mouse movement, there's no need to spend a second or two to fix that because the action has already moved on. You wouldn't want to use it to request a website, though, because you couldn't guarantee that all the data would make it. With QUIC, Google aims to combine some of the best features of UDP and TCP with modern security tools.

+ - Oklahoma says it will now use nitrogen gas as its backup method of execution->

Submitted by schwit1
schwit1 (797399) writes "Yesterday, Oklahoma governor Mary Fallin signed into law a bill that approves the use of nitrogen gas for executions in the state. The method, which would effectively asphyxiate death row inmates by forcing them to breathe pure nitrogen through a gas mask, is meant to be the primary alternative to lethal injection, the Washington Post reports.

Fallin and other supporters of the procedure say it's pain-free and effective, noting that the nitrogen would render inmates unconscious within ten seconds and kill them in minutes. It's also cheap: state representatives say the method only requires a nitrogen tank and a gas mask, but financial analysts say its impossible to give precise figures, the Post reports.

Oklahoma's primary execution method is still lethal injection, but the state's procedure is currently under review by the Supreme Court. Earlier this week, Tennessee suspended executions statewide following challenges to its own lethal injection protocol."

Link to Original Source

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