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Comment Technical solution (Score 1) 437

Say you want to give a 50 question multiple choice test. First make up two or three questions of similar difficulty for each "slot" on the exam. Now use a pseudo-random number generator to generate a "unique" test for each student by picking just one of the candidate questions for each slot, also use the random number generator to shuffle the answers so the correct one differs from one paper to the next. Include the seed for the random number generator on the test paper and have the student enter it onto the scantron answer sheet. Then you just need a smart scanner to check the answers based on which set of questions the student was given.

Cheating is still possible, but much harder because students can no longer send simple "Q23:B" messages, instead they need to send the complete question and answer (which may be a waste of time as that question may not even be on the recipient's copy of the exam).

Wireless Networking

Mount Everest Gets 3G Service 150

bossanovalithium writes "It's what every mountaineer wants when they reach the summit of Mount Everest: a 3G high-speed communication. Those who have trekked to the top will soon able to call their mates, go on Facebook or Twitter, and boast that they got there thanks to TeliaSonera and its subsidiary in Nepal, Ncell, which have brought 3G to the Mount Everest area. Climbers who reached Everest's 8,848-meter-high peak previously depended on expensive and erratic satellite phone coverage and a voice-only network set up by China Mobile in 2007 on the Chinese side of the mountain."
The Military

Power Failure Shuts Down 50 US Nuclear Missiles 338

Pickens writes "The Atlantic reports that a power failure at F.E. Warren Air Force Base in Wyoming took 50 nuclear intercontinental ballistic missiles (ICBMs), one-ninth of the US missile stockpile, temporarily offline on Saturday. The 90th Missile Wing, headquartered there, controls 150 Minuteman IIIs. According to people briefed on what happened, a squadron of ICBMs suddenly dropped down into what's known as 'LF Down' status, meaning that the missileers in their bunkers could no longer communicate with the missiles themselves. LF Down status also means that various security protocols built into the missile delivery system, like intrusion alarms and warhead separation alarms, were offline. The cause of the failure remains unknown, although it is suspected to be a breach of underground cables deep beneath the base, according to a senior military official."

Comment Re:seeing as Linux does 10240 cores already, WTF? (Score 1) 462

The 10240 core system is a 20 node cluster with 512 cores on each node (Columbia cluster at NASA).

These big SGI systems prove little about the general scalability of Linux as they are all running HPC (high performance computing) workloads - read in some data, crunch floating point numbers for several hours then printf("42\n") at the end of the run. I.e. not stuff that will stress the scalability of the operating system.

Take one of those systems and have it run a workload where all the cpus are trying to create/write/read/close on a bunch of small files, and you'll soon see how poorly they scale for general purpose workloads.

Comment Feature list for smart phone with FM radio (Score 1) 489

1) Record anything broadcast for replay later
2) Easy edit to trim off commercials from recordings
3) TiVo style back-up & replay of last 30 minutes
4) One-touch sample for use as ring tone
5) One-touch e-mail of recorded samples to friends
6) One-touch sharing of recorded samples on social media

All of these look pretty easy to implement. I'm sure that NAB and RIAA will just *love* that all this flexibility will be available to every smart phone user.

Comment Re:What A Crock (Score 0) 341

There are plenty of precedents for laws that make discrimination illegal. Have any of these been challenged with this 5th amendment argument? E.g. there are anti-discrimination housing laws that (attempt to) prevent landlords from discriminating when renting out properties.
Censorship

Google Stops Ads For "Cougar" Sites 319

teh31337one writes "Google is refusing to advertise CougarLife, a dating site for mature women looking for younger men. However, they continue to accept sites for mature men seeking young women. According to the New York Times, CougarLife.com had been paying Google $100,000 a month since October. The Mountain View company has now cancelled the contract, saying that the dating site is 'nonfamily safe.'"
Image

"Tube Map" Created For the Milky Way Screenshot-sm 142

astroengine writes "Assuming you had an interstellar spaceship, how would you navigate around the galaxy? For starters, you'd probably need a map. But there's billions of stars out there — how complex would that map need to be? Actually, Samuel Arbesman, a research fellow from Harvard, has come up with a fun solution. He created the 'Milky Way Transit Authority (MWTA),' a simple transit system in the style of the iconic London Underground 'Tube Map.' (Travel Tip: Don't spend too much time loitering around the station at Carina, there's some demolition work underway.)"

Comment Intuit are evil ... (Score 3, Informative) 613

Just got a pop-up from Quicken 2007 telling me that it will cease down-loading data from my bank at the end of April. If I want to keep being able to do this, then I'll have to upgrade to Quicken 2010.

This is the second time that Intuit have made an incompatible change to the download data format (at least while I've been using it). So I'm going to assume that their business plan now includes a forced upgrade every three or so years. Time to start researching non-evil alternatives.

Image

Tower Switch-Off Embarrasses Electrosensitives Screenshot-sm 292

Sockatume writes "Residents in Craigavon, South Africa complained of '[h]eadaches, nausea, tinnitus, dry burning itchy skins, gastric imbalances and totally disrupted sleep patterns' after an iBurst communications tower was put up in a local park. Symptoms subsided when the residents left the area, often to stay with family and thus evade their suffering. At a public meeting with the afflicted locals, the tower's owners pledged to switch off the mast immediately to assess whether it was responsible for their ailments. One problem: the mast had already been switched off for six weeks. Lawyers representing the locals say their case against iBurst will continue on other grounds."

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