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Education

AP CS Test Takers and Pass Rates Up, Half of Kids Don't Get Sparse Arrays At All 117 117

Posted by timothy
from the kids-these-days dept.
theodp writes: Each June, the College Board tweets out teasers of the fuller breakouts of its Advanced Placement (AP) test results, which aren't made available until the fall. So, here's a roundup of this year's AP Computer Science tweetstorm: 1. "Wow — massive gains in AP Computer Science participation (25% growth) AND scores this year; big increase in % of students earning 4s & 5s!" 2. "2015 AP Computer Science scores: 5: 24.4%; 4: 24.6%; 3: 15.3%; 2: 7.1%; 1: 28.6%." [3 or above is passing] 3."Count them: a whopping 66 AP Computer Science students out of 50,000 worldwide earned all 80 pts possible on this year's exam." 4. "Remember that AP exam standards are equated from year to year, so when scores go up, it's a direct indication of increased student mastery." 5. "Many AP Computer Science students did very well on Q1 (2D array processing–diverse array); >20% earned all 9/9 pts" [2015 AP CS A Free-Response Questions] 6. "The major gap in this year's AP Computer Sci classrooms seems to be array list processing; Q3 (sparse array): 47% of students got 0/9 pts."

+ - AP CS Test Takers and Pass Rates Up, Half of Kids Don't Get Sparse Arrays At All

Submitted by theodp
theodp writes: Each June, the College Board tweets out teasers of the fuller breakouts of its Advanced Placement (AP) test results, which aren't made available until the fall. So, here's a roundup of this year's AP Computer Science tweetstorm: 1. "Wow — massive gains in AP Computer Science participation (25% growth) AND scores this year; big increase in % of students earning 4s & 5s!" 2. "2015 AP Computer Science scores: 5: 24.4%; 4: 24.6%; 3: 15.3%; 2: 7.1%; 1: 28.6%." [3 or above is passing] 3."Count them: a whopping 66 AP Computer Science students out of 50,000 worldwide earned all 80 pts possible on this year’s exam." 4. "Remember that AP exam standards are equated from year to year, so when scores go up, it's a direct indication of increased student mastery." 5. "Many AP Computer Science students did very well on Q1 (2D array processing–diverse array); >20% earned all 9/9 pts" [2015 AP CS A Free-Response Questions] 6. "The major gap in this year’s AP Computer Sci classrooms seems to be array list processing; Q3 (sparse array): 47% of students got 0/9 pts."
Government

How Uber Takes Over a City 204 204

Posted by timothy
from the taking-the-offensive dept.
schwit1 suggests Bloomberg's story on one aspect of Uber's corporate behavior that may leave a sour taste in the mouth of anyone who'd like to believe the Uber-vs.-the-Cartels narrative. The company hired David Plouffe, known for managing Barack Obama's rise to fame, and many others as well, to help them navigate inevitable and ongoing moves for regulation. The scale is impressive; according to the article: Over the past year, Uber built one of the largest and most successful lobbying forces in the country, with a presence in almost every statehouse. It has 250 lobbyists and 29 lobbying firms registered in capitols around the nation, at least a third more than Wal-Mart Stores. That doesn't count municipal lobbyists. In Portland, the 28th-largest city in the U.S., 10 people would ultimately register to lobby on Uber's behalf. And while the article focuses mostly on the example of Portland, the effort is ongoing and nationwide.

+ - This Is How Uber Takes Over a City->

Submitted by schwit1
schwit1 writes: To conquer America's quirkiest city, the company unleashed its biggest weapon.

Charlie Hales, the mayor of Portland, Ore., was running a zoning hearing last December when he missed a call on his cell from David Plouffe, the campaign mastermind behind Barack Obama's ascent. Although Hales had never met him, Plouffe left a voice mail that had an air of charming familiarity, reminiscing about the 2008 rally when 75,000 Obama supporters thronged Portland's waterfront. "Sure love your city," Plouffe gushed. "I'm now working for Uber and would love to talk."

Over the past year, Uber built one of the largest and most successful lobbying forces in the country, with a presence in almost every statehouse. It has 250 lobbyists and 29 lobbying firms registered in capitols around the nation, at least a third more than Wal-Mart Stores. That doesn't count municipal lobbyists. In Portland, the 28th-largest city in the U.S., 10 people would ultimately register to lobby on Uber's behalf.

Link to Original Source
Microsoft

New Leaked Build Is Evidence That Windows 10 Will Be Ready By July 29 219 219

Posted by timothy
from the is-that-an-obscure-linux-distro? dept.
Ammalgam writes: A new pre-released build of Microsoft's latest Operating System Windows 10 leaked to the internet today. The build (10151) shows a more refined and significantly faster user interface than previous versions of the product. Microsoft seem to be focused on last minute refinements of the UI at this point and the product looks almost ready for prime time. A picture gallery of Windows 10 build 10151 can be found here.

+ - New leaked build is evidence that Windows 10 will be ready by July 29->

Submitted by Ammalgam
Ammalgam writes: A new pre-released build of Microsoft’s latest Operating System Windows 10 leaked to the internet today. The build (10151) shows a more refined and significantly faster user interface than previous versions of the product. Microsoft seem to be focused on last minute refinements of the UI at this point and the product looks almost ready for prime time. A picture gallery of Windows 10 build 10151 can be found here.
Link to Original Source
Transportation

Solar Impulse, Continuing World-Spanning Trip, Attempts To Cross The Pacific 37 37

Posted by timothy
from the can't-find-your-bags-at-all-sir dept.
The BBC reports that Solar Impulse has resumed its 'round-the-world attempt, having taken off today from Nagoya, Japan for what is intended to be a 120-hour voyage to Hawaii. [If pilot Andre Borschberg] succeeds, it will be the longest-duration solo flight in aviation history, as well as the furthest distance flown by a craft that is powered only by the Sun. The Pacific crossing is the eighth leg of Solar Impulse's journey around the world. But this stage has proven to be the most difficult, and has been hit by weeks of delays." The circumnavigation attempt began earlier this year.

Google News Sci Tech: Solar plane restarts record bid - Brisbane Times->

From feed by feedfeeder

Brisbane Times

Solar plane restarts record bid
Brisbane Times
RAW VIDEO: Solar Impulse 2, a solar-powered plane attempting a round-the-world flight, finally took off from Japan for Hawaii after long delays due to bad weather. 29/06/15. Escaped prisoner Sweat in 'critical condition' (Video Thumbnail). Up next... Escaped...
Solar-powered plane attempts Japan-Hawaii flightFox News
Solar Impulse Plane Departs Japan, Headed for HawaiiABC News
Solar-powered plane finally leaves Japan for HawaiiUSA TODAY
The Guardian
all 128 news articles

Link to Original Source
Bug

Chromecast Update Bringing Grief For Many Users 135 135

Posted by timothy
from the everyone-complains dept.
An anonymous reader writes: Last week, many Chromecast users were automatically "upgraded" to build 32904. Among the issues seen with this update are placing some users on the 'beta' release track, issues with popular apps such as Plex, HBO GO, (more embarassingly) YouTube, and others. Google so far has been slow to respond or even acknowledge the issues brought by customers, save for the beta release mishap. If you're a Chromecast user, what's been your experience?

+ - Chromecast Update Bricking Devices; No Acknowledgement from Google-> 1 1

Submitted by Anonymous Coward
An anonymous reader writes: Last week, many Chromecast users were automatically "upgraded" to build 32904. Among the issues seen with this update are placing some users on the 'beta' release track, issues with popular apps such as Plex, HBO GO, (more embarassingly) YouTube, and others. Google so far has been slow to respond or even acknowledge the issues brought by customers, save for the beta release mishap.
Link to Original Source
Medicine

Pass the Doritos, Scientists Develop Computer Game Targeted At Healthy Choices 78 78

Posted by timothy
from the it-puts-the-lotion-on-its-skin-or-else-it-gets-basal-cell-carcinoma dept.
MojoKid writes: Psychologists at the University of Exeter and Cardiff University have published a study that demonstrates how a simple computer game can help people lose weight. Participants in the study who played the specialized game lost and average of 1.5 pounds in the first seven days, and 4.5 pounds after six months. They also reduced their daily caloric consumption by 220 calories. Dr. Natalia Lawrence led the team of researchers that developed the computer game for the study. It was designed to train people to resist unhealthy food snack foods through a "stop versus go" process. Participants sat in front of a Pentium 3 PC running Matlab software on a 17-inch monitor. They were then instructed to press certain keys when images of things like fruits and clothes would appear, indicating a "go." But for images of calorie-dense foods (chips and cake, for example) they were instructed not to do anything, indicating a "stop" action.

+ - Pass The Doritos, Scientists Develop Computer Game Targeted At Healthy Choices->

Submitted by MojoKid
MojoKid writes: Psychologists at the University of Exeter and Cardiff University have published a study that demonstrates how a simple computer game can help people lose weight. Participants in the study who played the specialized game lost and average of 1.5 pounds in the first seven days, and 4.5 pounds after six months. They also reduced their daily caloric consumption by 220 calories. Dr. Natalia Lawrence led the team of researchers that developed the computer game for the study. It was designed to train people to resist unhealthy food snack foods through a "stop versus go" process. Participants sat in front of a Pentium 3 PC running Matlab software on a 17-inch monitor. They were then instructed to press certain keys when images of things like fruits and clothes would appear, indicating a "go." But for images of calorie-dense foods (chips and cake, for example) they were instructed not to do anything, indicating a "stop" action.
Link to Original Source
Build

Ask Slashdot: For What Are You Using 3-D Printing? 248 248

Posted by timothy
from the endless-dollhouse-furniture dept.
An anonymous reader writes: I've been thinking about getting a 3-D printer for a while: the quality is rising, the software is better, STL files really do seem a sufficiently good standard ("sufficiently standard," that is — I'm not worried that printers are going to stop supporting it anytime soon), and prices have dropped quite a bit. Importantly to me, it also seems like less of a jumping-off-a-cliff decision, since I can get a completely assembled one from places as wild and crazy as ... the Home Depot (not that I plan to). However, even the stretchiest practical things I can think of to print can't truly actually justify the price, and that's OK — I hope not to require enough replacement knobs and chess pieces to necessarily *need* one, and playing around with it is the main likely upshot, which I'm OK with. But still, I'd like to hear what uses you have been putting your 3-D printer to, including printers that aren't yours but belong to a hackerspace, public library, eccentric neighbor, etc. What actually practical / useful tasks have you been using 3-D printing for, and with what printer technology? What playful purposes? It's OK if you just keep printing out those chess pieces and teapots, but I'm curious about less obvious reasons to have one around. (And I might just use the local Tech Shop's anyhow, but the question still applies.) If you've purchased a 3D printer, are you happy with the experience? If so, or if not, what kind did you get?

An egghead is one who stands firmly on both feet, in mid-air, on both sides of an issue. -- Homer Ferguson

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