Slashdot Mirror

An anonymous submitter writes "A computer engineering student at UC Berkeley has made a comprehensive archive of riddles from technical interviews. Very challenging and loads of fun. Also useful for interview preparation."

idletask writes: "Hesham Kamel, a student from University of Berkeley who lost his vision 17 years ago due to a surgeon error, imagined and implemented IC2D (Integrated Communication 2 Draw), a program allowing visually impaired people in general to create computer graphics. The interface to the program is a mere telephone keypad, and it uses voice synthesis to communicate with the user. In fact, this program reveals, through its testers, that yes, blind people know how to draw, and they're as good at it as other people. More information on this program can be found here (1) and here (2). Story found on ArsTechnica."

idletask writes: "Hesham Kamel, a student from University of Berkeley who lost his vision 17 years ago due to a surgeon error, imagined and implemented IC2D (Integrated Communication 2 Draw), a program allowing visually impaired people in general to create computer graphics. The interface to the program is a mere telephone keypad, and it uses voice synthesis to communicate with the user. In fact, this program reveals, through its testers, that yes, blind people know how to draw, and they're as good at it as other people. More information on this program can be found here (1) and here (2). Story found on ArsTechnica."

idletask writes: "Hesham Kamel, a student from University of Berkeley who lost his vision 17 years ago due to a surgeon error, imagined and implemented IC2D (Integrated Communication 2 Draw), a program allowing visually impaired people in general to create computer graphics. The interface to the program is a mere telephone keypad, and it uses voice synthesis to communicate with the user. In fact, this program reveals, through its testers, that yes, blind people know how to draw, and they're as good at it as other people. More information on this program can be found here (1) and here (2). Story found on ArsTechnica."

Five foot slide rules? Brass and Wood balances? Bakelite Metering Equipment. This and more are up on the block as a result of UC Berkeley's physics department wanting to clear out old gear (they need the room). The San Francisco Chronicle has a story about auction. Apparantly, about 20 items will be auctioned in a "test the waters" sales this Sunday, and the balance of the 1000 pieces will be sold July 28th...

R Jason Valentine writes "Before Ogg was an encoding standard it was a verb. Before the internet enabled the masses to play against each other in Quake and Ultima Online, there was a cross-platform multiple player interactive online game called Netrek. Netrek can trace its history back to 1972. It's an interesting, though incomplete, read, that includes travels through places like Berkeley's XCF. Netrek generally peaked in play in the early 90's, from about 1992 to 1995 or so, and was popular enough to even get an article in Wired. With this explosion of players, several variations on the original style, called Bronco, emerged. These were Chaos (similar to bronco), Paradise, and Hockey. The Chaos and Paradise variants are all but dead, mostly due to lack of players and an expired Paradise-capable client for Windows. A Bronco pick-up game still occurs daily, and usually once or twice a week, there is a hockey game. League games still exist, and this is the 10th year of league play, with around 200 players registered for the 2002 draft league."

Valentine continues: "Though the graphics are subspectacular, gameplay is enveloping. Like chess, the rules are simple and comprehendable within the first hour of play, yet the game is difficult to master. After a 5 year hiatus, I returned to the game and found play still engaging with a healthy, though small, active community. The clients haven't had a major upgrade in years, and recent rebuild attempts remain unfinished. The development slowdown can be attributed to a decrease in interest and the aging of the original programmers, who now hold steady jobs and don't have an itch to update stable clients. If you've played before, but not in a long time, the game is worth revisiting. If you've never played, and don't have the latest greatest hardware to play the latest installment of the tired FPS genre, check out Netrek. Minimum system requirements are a graphics card that can do 256 colors at 1024x768 and an internet connection."

Slashback with updates on RMS's biography, PVRs vs. the endangered edifice of Western Civilization, Oracle's funny deal with California, cold fusion and more. Read on for the details! Can't we please have a picture of the winner? obsidianpreacher writes: "Apparently, SETI@Home has just recently released who the winner of the 500 millionth result "contest" is, and posted the news on the SETI@Home site. Too bad it wasn't me (or one of the people who turn in 300 bajillion results per day)."

Even lukewarm fusion would be satisfy me. driggers writes: "I wrote a review of the book "Excess Heat" for /. last year. I thought you might (or might not :) be interested to learn that the U.S. Navy in February 2002 issued Technical Report No. 1862 titled "Thermal and Nuclear Aspects of the Pd/D2O System," Vol. 1 of which summarizes A Decade of Research at Navy Laboratories."

Dr. Frank Gordon, Head, Navigation and Applied Sciences Department, concludes his foreword with the remark, "It is time for the government funding organizations to invest in this research."

If you modify the source you must keep it accurate, like a Mad Lib. An Anonymous Coward writes "I just noticed the biography of Richard M. Stallman, "Free as in Freedom" by Sam Williams is online at oreilly, released under the GNU Free Documentation License."

What vapors rule the modern day Oracle? MarkedMan writes: "The following CNET article outlines Oracle's reply to the State of California's announcement it was canceling a nearly $100 million dollar contract. It should not come as a surprise, as few companies would give up that kind of money without a fight, not to mention the domino effect if they just rolled over. It would be a tacit admission that they ripped off naive customers."

Slashback with updates on RMS's biography, PVRs vs. the endangered edifice of Western Civilization, Oracle's funny deal with California, cold fusion and more. Read on for the details! Can't we please have a picture of the winner? obsidianpreacher writes: "Apparently, SETI@Home has just recently released who the winner of the 500 millionth result "contest" is, and posted the news on the SETI@Home site. Too bad it wasn't me (or one of the people who turn in 300 bajillion results per day)."

Even lukewarm fusion would be satisfy me. driggers writes: "I wrote a review of the book "Excess Heat" for /. last year. I thought you might (or might not :) be interested to learn that the U.S. Navy in February 2002 issued Technical Report No. 1862 titled "Thermal and Nuclear Aspects of the Pd/D2O System," Vol. 1 of which summarizes A Decade of Research at Navy Laboratories."

Dr. Frank Gordon, Head, Navigation and Applied Sciences Department, concludes his foreword with the remark, "It is time for the government funding organizations to invest in this research."

If you modify the source you must keep it accurate, like a Mad Lib. An Anonymous Coward writes "I just noticed the biography of Richard M. Stallman, "Free as in Freedom" by Sam Williams is online at oreilly, released under the GNU Free Documentation License."

What vapors rule the modern day Oracle? MarkedMan writes: "The following CNET article outlines Oracle's reply to the State of California's announcement it was canceling a nearly $100 million dollar contract. It should not come as a surprise, as few companies would give up that kind of money without a fight, not to mention the domino effect if they just rolled over. It would be a tacit admission that they ripped off naive customers."

Slashback with a weekend worth of updates on Wal-Mart's OS-free PC, the End of the Simpsons, Harlan Ellison v. AOL, wireless goodies and more. Read on below for the goods.

There must be some mistake; this is what I wanted. Masem writes: "The review of the OS-less PCs sold through Wal-Mart brought out a lot of comments on the inclusion of a WinModem, effectively requiring Windows to make the computer work correctly. However, NewsForge reports that shortly after that posting, Microtel, the makers of these computers, wrote back to the reviewer and indicated that new versions of the systems will ship with Linux-friendly modems from now on. Nice to see a company that knows its target audience and how to make them happy."

Thanks, Microtel!

Next: ethernet cable manufacturers. cpt kangarooski writes: "For those tuning in late, Harlan Ellison sued AOL (among others) for having the temerity to permit users to upload copies of his copyrighted works across their networks on the Usenet. As it turns out, AOL was in the right, and got a summary judgment against Ellison.

The opinion by Judge Cooper is located here in PDF format Given his reputation, Ellison will likely appeal."

Welcome to Ix, please take off your shoes. cayle clark writes "A few months back I asked slashdot about shopping in the Akihabara, Tokyo's famous "electric town," and got lots of good advice. Well, now I been and went there, took some pictures, and posted an illustrated account here. Netting it out, it's a keen place to wander, and prices are in some (but only some) cases lower than in the USA."

Hacking at the ties that bind Following up on the new venture in wireless from the LinuxCare crew, Dave Sifry writes "802.11b Networking News wrote up a summary of the new Sputnik Gateway release today, codenamed Stagecoach. The Community Gateway code runs from CD and turns a computer with an ethernet card and Prism 802.11b card into a secure authenticating firewalled 802.11b Access Point. New features of this release include support for desktop cards, like the Linksys WMP11 PCI card, which means that you can turn your old 486 in a closet into a cheap secure wireless router."

I'd rather they save Futurama, but gift horse, teeth, etc. Remik writes "Yahoo News is carrying this story letting Simpsons creator Matt Groening set the record straight that the Simpsons isn't winding down and that it isn't on the ropes. He claims he was misquoted and misunderstood in a Financial Times of London article that came out earlier this week and that he does indeed has stories for years and years. What if Marge became a robot? Hmm..."

Has anyone detected the envelope with the winner's name yet? SoundGuy666 writes "Looks like SETI made it past that 500 million milestone - wonder who won the $500 prize..."

Slashback with a weekend worth of updates on Wal-Mart's OS-free PC, the End of the Simpsons, Harlan Ellison v. AOL, wireless goodies and more. Read on below for the goods.

There must be some mistake; this is what I wanted. Masem writes: "The review of the OS-less PCs sold through Wal-Mart brought out a lot of comments on the inclusion of a WinModem, effectively requiring Windows to make the computer work correctly. However, NewsForge reports that shortly after that posting, Microtel, the makers of these computers, wrote back to the reviewer and indicated that new versions of the systems will ship with Linux-friendly modems from now on. Nice to see a company that knows its target audience and how to make them happy."

Thanks, Microtel!

Next: ethernet cable manufacturers. cpt kangarooski writes: "For those tuning in late, Harlan Ellison sued AOL (among others) for having the temerity to permit users to upload copies of his copyrighted works across their networks on the Usenet. As it turns out, AOL was in the right, and got a summary judgment against Ellison.

The opinion by Judge Cooper is located here in PDF format Given his reputation, Ellison will likely appeal."

Welcome to Ix, please take off your shoes. cayle clark writes "A few months back I asked slashdot about shopping in the Akihabara, Tokyo's famous "electric town," and got lots of good advice. Well, now I been and went there, took some pictures, and posted an illustrated account here. Netting it out, it's a keen place to wander, and prices are in some (but only some) cases lower than in the USA."

Hacking at the ties that bind Following up on the new venture in wireless from the LinuxCare crew, Dave Sifry writes "802.11b Networking News wrote up a summary of the new Sputnik Gateway release today, codenamed Stagecoach. The Community Gateway code runs from CD and turns a computer with an ethernet card and Prism 802.11b card into a secure authenticating firewalled 802.11b Access Point. New features of this release include support for desktop cards, like the Linksys WMP11 PCI card, which means that you can turn your old 486 in a closet into a cheap secure wireless router."

I'd rather they save Futurama, but gift horse, teeth, etc. Remik writes "Yahoo News is carrying this story letting Simpsons creator Matt Groening set the record straight that the Simpsons isn't winding down and that it isn't on the ropes. He claims he was misquoted and misunderstood in a Financial Times of London article that came out earlier this week and that he does indeed has stories for years and years. What if Marge became a robot? Hmm..."

Has anyone detected the envelope with the winner's name yet? SoundGuy666 writes "Looks like SETI made it past that 500 million milestone - wonder who won the $500 prize..."

Jonathan writes: "SETI@Home, the largest distributed computing project in the world, is on the verge of receiving its 500 millionth result. This is a major milestone for both the project and distributed computing as a whole. Oh, and if you still need some added incentive to get involved, there's a $500 reward for the user who returns the milestone result."

Jonathan writes: "SETI@Home, the largest distributed computing project in the world, is on the verge of receiving its 500 millionth result. This is a major milestone for both the project and distributed computing as a whole. Oh, and if you still need some added incentive to get involved, there's a $500 reward for the user who returns the milestone result."

Jonathan writes: "SETI@Home, the largest distributed computing project in the world, is on the verge of receiving its 500 millionth result. This is a major milestone for both the project and distributed computing as a whole. Oh, and if you still need some added incentive to get involved, there's a $500 reward for the user who returns the milestone result."

No_Weak_Heart writes "UC Berkley reports on the successful deployment of the first permanent broadband earthquake monitor on the California seafloor. The instrument, similar to this one , is the first of a planned network that will help Berkeley seismologists and MBARI geologists measure earthquake activity from the ocean side of the San Gregorio fault zone. The seismograph was put in place by the Ventana, a remotely operated vehicle(ROV)."

No_Weak_Heart writes "UC Berkley reports on the successful deployment of the first permanent broadband earthquake monitor on the California seafloor. The instrument, similar to this one , is the first of a planned network that will help Berkeley seismologists and MBARI geologists measure earthquake activity from the ocean side of the San Gregorio fault zone. The seismograph was put in place by the Ventana, a remotely operated vehicle(ROV)."

nweaver writes "Some reflection on Brilliant Digital's plans shows that they have inadvertently created a Single Point of 0wnership: a single machine or small group of machines which, if succesfully attacked, can be used to gain effective control of the Internet. The implications are rather scary: Even if you never touched KaZaA, your systems may be affected if someone manages to attack Brilliant Digital's update service. Who needs a Warhol Worm?".Updated by HeUnique: use these instructions to remove the Brilliant part.

nweaver writes "Some reflection on Brilliant Digital's plans shows that they have inadvertently created a Single Point of 0wnership: a single machine or small group of machines which, if succesfully attacked, can be used to gain effective control of the Internet. The implications are rather scary: Even if you never touched KaZaA, your systems may be affected if someone manages to attack Brilliant Digital's update service. Who needs a Warhol Worm?".Updated by HeUnique: use these instructions to remove the Brilliant part.

nweaver writes "Some reflection on Brilliant Digital's plans shows that they have inadvertently created a Single Point of 0wnership: a single machine or small group of machines which, if succesfully attacked, can be used to gain effective control of the Internet. The implications are rather scary: Even if you never touched KaZaA, your systems may be affected if someone manages to attack Brilliant Digital's update service. Who needs a Warhol Worm?".Updated by HeUnique: use these instructions to remove the Brilliant part.

reflexreaction writes: "With so many of the /. users actively using and supporting Seti@home, many of you have realized that in the last couple of weeks that Seti has had some serious problems receiving completed data and getting new data to process from its 3 million members because of network bandwidth problems. All the gritty details are here. The article details some things that users can do to alleviate some of the problems including connecting during off hours and downloading more than unit than once using programs like SetiQueue for PC and Seti Unit Manager for Mac. Donations are also accepted. There is also a plea for bandwidth donations. It will be truly unfortunate if this page becomes /.ted without benefit from /. users."

reflexreaction writes: "With so many of the /. users actively using and supporting Seti@home, many of you have realized that in the last couple of weeks that Seti has had some serious problems receiving completed data and getting new data to process from its 3 million members because of network bandwidth problems. All the gritty details are here. The article details some things that users can do to alleviate some of the problems including connecting during off hours and downloading more than unit than once using programs like SetiQueue for PC and Seti Unit Manager for Mac. Donations are also accepted. There is also a plea for bandwidth donations. It will be truly unfortunate if this page becomes /.ted without benefit from /. users."

reflexreaction writes: "With so many of the /. users actively using and supporting Seti@home, many of you have realized that in the last couple of weeks that Seti has had some serious problems receiving completed data and getting new data to process from its 3 million members because of network bandwidth problems. All the gritty details are here. The article details some things that users can do to alleviate some of the problems including connecting during off hours and downloading more than unit than once using programs like SetiQueue for PC and Seti Unit Manager for Mac. Donations are also accepted. There is also a plea for bandwidth donations. It will be truly unfortunate if this page becomes /.ted without benefit from /. users."

Many people have reported a Warhol virus affecting users of Microsoft Instant Messenger. If you get messaged, "Go To http://www.masenko-media.net/cool.html NoW !!!", or any similar message (apparently there are several websites with the infection code), I suggest not following the link. A brief discussion follows.

Sequence: Get messaged "Go To http://www.masenko-media.net/cool.html NoW !!!" or something similar with another URL. Follow the link. That webpage contains malicious code which gets your messenger contacts and sends a similar message to your contacts. It looks like it uses a vulnerability in formmail.pl as well, although I'm not exactly sure how (I'm not an expert in ECMAscript, sorry, and I have no systems that could possibly be affected by this to test with). I'm sure some of our readers can provide more information in the comments below.

There appear to be several webpages which carried the infected code, not just masenko-media.net. Some webmasters are already taking them down.

Sophistication: moderate. Damage: only your pride.

Solution: probably the latest mega-patch for Internet Explorer will fix the Microsoft bug that allowed this.

Risks: obviously, the code could have done worse than just messaging your contacts. With Microsoft making "messaging" an integrated part of the operating system, any flaws in it can be exploited to affect millions of people instantly, so it is a high-value target. Does it have commensurate high-strength security?

gschoder writes: "Two Berkeley computer scientists (including David P. Anderson of SETI@home) envision an Internet-scale operating system to harness the processing power, networking efficiency, and storage capacity of everyone's computers. Scientific American has their proposal."

gschoder writes: "Two Berkeley computer scientists (including David P. Anderson of SETI@home) envision an Internet-scale operating system to harness the processing power, networking efficiency, and storage capacity of everyone's computers. Scientific American has their proposal."

DarkKnightRadick writes: "In this day and age, data sharing, data mining and distributed computing are words most of us know well enough, but until recently, those phrases were connected with such projects as DNET, and more recently with SETI@Home. Now we should all welcome the newcomer, Virtual Astronomy. With the framework being developed by three different groups (one in the UK, one in the US, and one in Australia), one would expect this to be a very competitive field, but alas, this is not the case. The three groups are working together so that they can have it all up in running the in the projected 15 years that it will take to put all this data into an electronic format."

technodummy writes: "Wired is reporting how CERN is driving the Linux-based, EU funded, DataGRID project. And no, they say, it's nothing like Seti@Home. The description on the site of the project is: ' The objective is to enable next generation scientific exploration which requires intensive computation and analysis of shared large-scale databases, from hundreds of TeraBytes to PetaBytes, across widely distributed scientific communities.'" If you're interested in this, check out the Fermi Lab work with LinuxNetworkX data as well as the all-powerful Google search on the Fermi Collider Linux project. As jamie points out, "Colliders produce *amazing* amounts of data in *amazingly* short time periods... on the order of "here's a gigabyte, you have 10 milliseconds to pull whatever's valuable out of it before the next gigabyte arrives".

brett42 writes "Some students at Berkeley wrote a python program that connects to the Gnutella network and maps out connections between nodes in real time. " I gotta say thats pretty smooth. Hopefully future gnutella clients will incorporate something like this just for the time wasting potential of watching the graph wiggle while seeing what porn others are searching for.

3141592654 asks: "I've been doing a little experiement to compare Ext2, ReiserFS, and SGI XFS. The experiment (LFS Sprite benchmark for small files) involves tight loops of creating 10,000 1K files spread equally among 100 directories, reading them back in order, and deleting them. On a 1GHz processor with plenty of RAM running Linux 2.4.2, with matching versions of file systems in default configurations (no debugging and no internal checks). In our tests, EXT2 turned out to be faster than both ReiserFS and XFS. We had been led to believe by other published results that XFS would be much faster than Ext2, and ReiserFS would run just about as fast. Have any slashdot readers had experienced similar results with these filesystems? Or have we simply overlooked a major factor in our tests?"

"Here are the results (create, read, delete) in seconds:

1. Ext2 (0.45, 0.093, 0.13)
2. ReiserFS (2.5, 0.45, 0.94)
3. XFS (6.4, 0.15, 7.1)

Note that ReiserFS (v3.6.25) and XFS (v1.0) are vastly slower than Ext2 (v0.5b) in an identical configuration.

Since we can obtain these numbers consistently, we are wondering why they deviate from various published results. We have ruled out cache warm-up and disk-zone effects. All three file systems were set up from scratch from a 6 GB disk partition."

BigDave writes: "In this article on Wired, it describes how SETI is gradually running out of data, as the current data acquisition system cannot keep up with the rate of processing (since they now have 3 million users processing data). They have acquired a new high-speed digital data recorder which is Linux-powered, and was donated by Hewlett-Packard."

ravidew writes: "Three students at Berkeley Sensor and Actuator Center, University of California, have built a motion-sensing glove that can transmit hand gestures to a PC. Within 3 years they hope to build sensors that are no bigger than 1mm and can be glued to each fingernail. Now you can really tell Windows what you think ..." While you're at the Sensor and Actuator Center, check out Kris Pister's smart dust.

ravidew writes: "Three students at Berkeley Sensor and Actuator Center, University of California, have built a motion-sensing glove that can transmit hand gestures to a PC. Within 3 years they hope to build sensors that are no bigger than 1mm and can be glued to each fingernail. Now you can really tell Windows what you think ..." While you're at the Sensor and Actuator Center, check out Kris Pister's smart dust.

ravidew writes: "Three students at Berkeley Sensor and Actuator Center, University of California, have built a motion-sensing glove that can transmit hand gestures to a PC. Within 3 years they hope to build sensors that are no bigger than 1mm and can be glued to each fingernail. Now you can really tell Windows what you think ..." While you're at the Sensor and Actuator Center, check out Kris Pister's smart dust.

Scott_Marks writes: "Science magazine has a review by Pamela Samuelson on the effect of anticircumvention rules on the pursuit of scientific knowledge. The abstract: 'Scientists who study encryption or computer security or otherwise reverse engineer technical measures, who make tools enabling them to do this work, and who report the results of their research face new risks of legal liability because of recently adopted rules prohibiting the circumvention of technical measures and manufacture or distribution of circumvention tools. Because all data in digital form can be technically protected, the impact of these rules goes far beyond encryption and computer security research. The scientific community must recognize the harms these rules pose and provide guidance about how to improve the anticircumvention rules.'"

handspring_cjf asks: "I'm doing some work on non-technical projects: organizations/companies that are using the ideals that originated with the Open Source movement in the commercial/non-profit marketplace. So far, I've come up with the OpenLaw project at Harvard Uni, but that seems to be the only big one that I can find. I'm sure that there are others out there that I don't know about. Any help that people could offer would be greatly appreciated."

Timothy has compiled a good list of links related to this morning's terrorist attacks around America. Many photos and video clips. There's a lot of good links there and I highly recommend that you read them. And thanks to the Slashteam for keeping the servers up through this. Its not easy dealing with 3x the traffic. I apologize to readers that have been inconvenienced.

Two major news updates: the plane downed near Pittsburgh is reported not to have been shot down. A fifth plane which had been feared hijacked, this one a Korean Air jetliner, was forced down by Canadian Air Force planes over the Yukon. However, this plane is reported not to have been hijacked -- instead, its emergency beacon was triggered by a low-fuel indicator.

Importantly -- remember, blood is in demand. The Red Cross' site is mobbed, but here's the blood donation information on a the cached page at google.

More details of the attack and its aftermath: a report at at gnome.org, and a photo at indymedia.org. pajama links to NYC Police scanner traffic (winamp) streamed online, and an anonymous reader also points to another scanner feed.

Shadowwalker Delaforge writes "Hey guys: I'm submitting my web site to yours to get the word out. I've been compiling web sites, and info on the U.S. Attack. These sites are ones that work, and arent' swamped out of existence. I'm also adding new data about where people can donate money, blood, and other things dealing with this.

soccerdad writes "Due to the activities of today, the internet/networking experts at my firm have been asked by some of our clients to be on standby in case anything untoward occurs. They've been monitoring backbone activity, etc., in a "just in case" mode. They've described the activity they're seeing as somewhat strange. The backbone is, according to them, at about 80% utilization -- they've never seen it above 40% before. However, the main portal sites such as Yahoo aren't having substantively higher than normal traffic. They're working on doing some traffic analysis but haven't completed that effort yet."

A small piece of that bandwidth may be saved if you go to the link Kalak suggests: "William Shunn is collecting short notes from people in the terrorist affected areas so you can see who is OK." Look here (or post your name here if you're in an affected city) before tying up a phone connection. Alex Fabrikant submitted another personal information site at Berkeley

Thapthim writes "http://cbc.ca/ has all sorts of information, even in our own city buildings are being shutdown, all air traffic has been suspended. However Canadian Airports are taking in international flights heading into US so the air ports there are free for emergencies."

sn0wcrsh wrote to say that a "short blurb on Channel 7 Boston that the CTO of Akamai was on the fateful plane that hit the trade center" confirms the earlier reports that he was on board.

And ectrix writes: "The CFO of my company, Netegrity was on United Airlines Flight 175, which has been confirmed to us by United Airlines to have hit tower two of the WTC.

WAVY NBC - Norfolk, VA (among other local TV stations I'm sure) is reporting on the air the Threatcon levels at the area Naval, Air Force, and Army bases. They are all at Threatcon Delta. Their website currently only lists their status as of the beginning of the attacks, which was Threatcon Charlie. Norfolk, VA is the home port for the US Atlantic Fleet. Local TV stations also are showing armed (M16s, shotguns) guards patrolling the base grounds and perimeters."

There are updated photos and videos here, and CarbonFusion wrote with another good link to photos and videos.. eddiem writes: "http://www.flightexplorer.com/ will soon let you view the flight path of the planes." Explanations of airport security at How Stuff Works and Cryptome are an interesting read under the circumstances as well.

Bard, Andrew wrote with some updates as well:

"Just to let you know:

1. I heard a woman who was on the 92nd floor of the first WTC building when the plane hit it. She was able to escape and so was everyone "in her company" so it is assumed that virtually everyone from the 92nd floor down was evacuated successfully - an estimated 20,000 people of the 25,000 in the building.
2. the plane that went down in PA had a woman onboard who locked herself in the bathroom with her cellular phone - she was telling authorities about the hijacking when the plane crashed and killed her - that is the only way the authorities knew for sure what plane went down in PA so quickly, she gave her flight number
3. the Mexican border is completely closed and the Canadian border is still open - all International flights have been redirected to Northern Canada
4. the planes from Boston were presumably chosen because they were going on long flights (to LA) which would make them larger than average airliners with full tanks of gas
5. when the first WTC building crashed (which was the 2nd one to be hit), 125 firemen were down below fighting the fire on the first building to be hit... none of them have been heard from yet - 10,000 emergency personnel in NYC responded to the first WTC getting hit... it is unknown how many of those were crushed in the two collapsed buildings."

Joseph Dale writes "Lisp as an Alternative to Java is a detailed and well-reasoned study comparing Lisp to Java and C++ in terms of execution time, memory consumption, and developer effort. The author, Erann Gat, was the principal software architect for the Mars Science Microrover, the prototype for the Mars Pathfinder rover."

Mike Schiraldi was the first to write about Dmitry Sklyarov's release from jail, even before it happened: "According to this live report from the courtroom, Dmitri will probably be out of jail real soon now. Of course, he still won't be allowed to leave Northern California, but it's a start ..." Soon after, inaneboy pointed out this Reuters story on yahoo which says that Sklyarov has been released, on 50,000 dollars bail, raised by his employer, ElcomSoft. phalse phace wrote to say that the EFF has just posted an announcement as well as some background.

SillyWilly writes: "A while ago a story was posted here about a vibrating plate capable of sorting color poker chips, and there was much ado about the videos being real. Well, a new cool demo involving chess pieces is out, done by a fellow called Neil Aldrin, who is hacking away at Dan Reznik's (the original inventor) cool contraption."

SillyWilly writes: "A while ago a story was posted here about a vibrating plate capable of sorting color poker chips, and there was much ado about the videos being real. Well, a new cool demo involving chess pieces is out, done by a fellow called Neil Aldrin, who is hacking away at Dan Reznik's (the original inventor) cool contraption."

SillyWilly writes: "A while ago a story was posted here about a vibrating plate capable of sorting color poker chips, and there was much ado about the videos being real. Well, a new cool demo involving chess pieces is out, done by a fellow called Neil Aldrin, who is hacking away at Dan Reznik's (the original inventor) cool contraption."

naoursla writes: "Remember the DARPA research solicitation for proposals on Exoskeletons for Human Performance Augmentation? Here is a group that is making progress on it. Right now they have a pair of legs powered by a chain saw engine. Science News has an article about the researchers this week." And cmholm writes: "Fleshing out this earlier Slashdot story on wearable translators for the military is an article from AFCEA's June Signal magazine. Using a ViA II PC wearable running ViA's Language Translator software, the system can translate between spoken English and Korean, Thai, Chinese, Arabic, Albanian, Spanish, and other major European languages." So between the two, you can either talk to the aliens, or throw them out the airlock.

Khelder writes: "RF tags have been getting smaller and smaller. Now Hitachi has made ones small enough to put into paper money, according to this article on CNET news. As the article says, 'Though the chip requires a reader unit to work, its size carries big implications for the future of identity technology.'" I can think of lots of other cool uses for a chip this size, especially once they're programmable with a little desktop box, but do you really want a record in place every time you pay with cash?

PineGreen writes: "Tomorrow, MAP Satellite is to be launched. MAP is the first space mission to measure Cosmic Microwave Background (CMB) fluctuations after the famous COBE who was first to detect fluctuations in the CMB. It is supposed to do the job with an unprecedented accuracy. There were several successful balloon experiments (Boomerang, Maxima) and interferometer experiments (VSA, DASI, CBI), some of which still haven't published their data. But of course, we are all waiting for the big European Planck mission in 2007. Measuring CMB fluctuations can tell us a lot about the universe in which we live, its constituents and its geometrical properties."

The Angry Clam writes: "Supposedly, Intel has really micronized transistors." Seems that "Intel engineers have designed and manufactured a handful of transistors that are only 20 nanometers, or 0.02 microns, in size." There's some of the usual discussion of how long Moore's Law can hold, but also a bit of discussion about what will replace silicon dioxide in a few years. Reader omnirealm points to a similar story at the New York Times as well.

Officer Larry writes "A professor and a graduate student at the University of South Carolina just posted a study into SETI@home work unit completion times. They came up with some pretty interesting results. It stems off Team Lamb Chop's work, but these guys are interested in how much variation there is in completion times if the same work unit is analyzed over and over again on the same system. It looks like they have other studies in the hopper. Warning: there looks to be quite a bit of statistics in this study..."

Robots have been around in concept for longer than the word itself has been used to describe them, and for most of this century they've had a fair hold on the public imagination as either Utopian saviors or inexorable villains. Reader mtDNA sent in the evaluation below of a book called Robo sapiens: Evolution of a new species which may be the basis for a more realistic and neutral understanding about Robots, especially well suited to non-experts in that field. (I also found the other books in the series excellent.)

Robo Sapiens author Peter Menzel and Faith D'Aluisio pages 240 publisher MIT Press rating 8.5 reviewer mtDNA ISBN 0-262-13382-2 summary A coffee-table survey course in words and pictures on the state of robots at the turn of the century.

Robo sapiens is the latest offering in the "Material World" series produced by Peter Menzel and Faith D'Aluisio, which includes Material World: A Global Family Portrait (1995) and Man Eating Bugs: The Art and Science of Eating Insects (1998). On the outside, Robo sapiens is an ordinary coffee table book. On the inside, however, is something different. Robo sapiens sets out to document the state of the art in robotics and artificial intelligence by talking to over fifty active researchers and photographing them with the tools of their trade. The book succeeds brilliantly. With sharp, beautifully reproduced photographs and engaging, well composed text, Robo sapiens provides an overview of robotics research that is simultaneously surreal, comically entertaining and dead serious.

The book is motivated by two main questions: What are robotics researchers working on? and Where are robots headed?

The book attempts to answer these questions through a sequence of profiles. Each profile is roughly two to three pages long and includes an interview, a description of a specific robot of interest and one or more relevant photographs.

The interview with Cynthia Breazeal, the creator of Kizmet (a robot that specializes in communication through facial expression), is typical. It includes Kizmet's basic specifications, photos of Kismet partly disassembled, a photo of Breazeal working on Kismet and several photos of Kismet in action. An interview with Breazeal discusses the general motivations for making a robot use facial expressions and her general approach to artificial intelligence.

Menzel is a terrific photographer, and every shot reflects attention to detail. Menzel tried to capture each robot with its designer (preferably while they were interacting) but there are plenty of photos of bots on their own. Some of my favorites were of BIT (a baby-doll-bot), Kismet (a face-bot with expressions) and Robopike (a fish-bot that swims). Several of the pictures, like the face robot on the cover, the surgery robot in the front pages and the baby (BIT) robot on the back cover are nightmarish or psychadelic, but these are the minority. All of the photos are at least slightly staged, but for the most part they are documentary and stylized only for added interest. Several photos from the book can be found on the Robo sapiens web page.

Research-based approaches to robotics vary widely, and the range of interviews in Robo sapiens varies accordingly. Many of the major players in robotics and artificial intelligence are represented: Ronald Arkin, Rodney Brooks, Raymond Kurzweil, Hans Moravec and Marc Raibert are there, to name just a few. A number of people not usually considered to be roboticists, like Robert Full and Paul McCready, are positive additions to the book's broad scope.

The interviews are surprisingly candid and telling. At one point, Rodney Brooks concedes that he could be wrong about behavior-based subsumption being fundamental, and that he might just be "a grumpy old asshole." (his words, not mine). At another point, two researchers (Eric Baumgartner and Terry Huntsberger) scramble to explain why their Mars rover is tethered, which would seem to be a problem on an interplanetary mission (it's to allow emergency shutdowns during testing). An inspiring feature of every interview is the enthusiasm that shines through. These people are having a darn good time and they make you want to join in the fun.

The answer to the first question posed by the book, "What are robotics researchers working on?", is well answered. In a series of six chapters (Electric dreams, Robo sapiens, Bio logical, Remote possibilities, Work mates and Serious fun), Menzel and D'Aluisio document a diversity of approaches that is truly remarkable in both behavior and mechanism. They range from Mark Tilden's primitivley elegant analog BEAM-bots to Honda's computationally brutish P-series. Robots that swim, walk, crawl, roll, swing and fly are all described. The conclusion is that research in robotics and artificial intelligence is far more diverse than most people would expect: applications range from human-bot social interactions to dynamic prosthetics to meteorite hunting.

The answer to the second question posed by the book, "Where are robots headed?", is less clear. This question is asked in many of the interviews explicitly and answers vary across a spectrum. Some interviewees, like Hans Moravec and Kevin Warwick, seem convinced that robots will eventually supplant or subsume the human species. Others, like Rodney Brooks and Mark Tilden, are more skeptical. One of the funniest interviews is with Tilden, who describes how he built a robot butler that ran into trouble with cleaning. The butler-bot couldn't tell the difference between dirt and cat food, so it vacuumed up the food and the cat went hungry. Tilden's point isn't that nobody can build a bot that can distinguish dirt and cat food, but that endowing bots with the kind of abstract intelligence that comes naturally to humans is a serious problem. It is clear that future directions include the development of new forms of intelligence, but it is unclear what forms these intelligences will take.

My main critism of Robo sapiens is its treatment of points of disagreement in the field. The question of whether robots will take over the world is presented as central, but in reality that question is only of marginal (if any) real interest to professionals. More important controversies, such as about the best way to implement artificial intelligence, are easy to find. One question that could have been asked is, "How is intelligence constructed?". Hearing the perspectives of people who actually design and build serious bots would be interesting. For example, some discussion of the differences between traditional sense-model-plan-act models of intelligence and newer behavior-based subsumption models by the people that actually use them would give a good idea of the practical constraints of each approach, as well as possible compromises. It would easily have been possible to discuss some of these issues without going over the heads of ordinary readers. One simple, illustrative observation would be that increases in the performance of artifical intelligence have not been described by Moore's Law. Why not? Speculation on the answer could only be informative.

Other minor shortcomings of the book are its lack of attention to the roles of history and non-professional researchers in the field. For the ordinary person, the mention of robots and artificial intelligence evokes images of HAL, Rosie, C3PO or even Frankenstein's monster. These images are an important consideration in the development of the robots we see today and in their general role in public life. Why isn't an airplane autopilot called a robot pilot? These issues are mentioned, but only briefly. Discussions with academicians and industry specialists dominate the book but sophisticated hobbyists are a significant presence in the real world. It's a shame not to give them some space.

Most of the deficiencies of the book are resolved by a quick look on the internet. Many of the researchers profiled in Robo sapiens have homepages that provide online versions of their technical articles and further information. Information about the work of amateurs and hobbyists is abundant online as well. Fred Martin's Handyboard, for example, has been integrated into all kinds of interesting projects. While Robo sapiens is directed at the educated layman and thus not a good source of technical information by itself, the book could be a useful starting point in finding robots and researchers in specific categories.

If you're propeller-head to the point of pathology, be warned: Robo sapiens isn't a technical document and may be disappointing. For the rest of us Robo sapiens is outstanding and at $29.95 (USD) it's a bargain. I heartily recommend Robo sapiens to anyone who even has a passing interest in who robotics researchers are, what they are doing, or where robots are headed.

You can purchase this book at ThinkGeek.

Logic Bomb writes: "Freedom of speech comes up quite a bit on Slashdot. How would you like to browse through a massive historical record of another modern free speech movment? According to an article from the San Francisco Chronicle, the archive located at UC Berkeley of records related to the 1964 Free Speech Movement has been digitized in its entirety and is available on the web for anyone to look at. It comes to over 35,000 pages of documents, not to mention digitized version of fliers and photographs. Much of the Slashdot readership, including myself, was born long after this amazing period in history ended. Archives such as this one allow those currently fighting for free speech to make connections to the past and even garner ideas to reuse. Read the article, then browse the archive."

Porfiry writes "An international team of astronomers has detected what could be a significant portion of the galactic dark matter that has eluded astronomers for nearly 70 years. Scanning digitized images of the southern sky, the team found 38 previously unseen cool white dwarfs within about 450 light years of Earth. If the density of these newly discovered white dwarfs is indicative of the rest of the galaxy's halo, these dead stars would comprise at least three percent of the dark matter of the halo, and perhaps as much as 35 percent."

Porfiry writes "An international team of astronomers has detected what could be a significant portion of the galactic dark matter that has eluded astronomers for nearly 70 years. Scanning digitized images of the southern sky, the team found 38 previously unseen cool white dwarfs within about 450 light years of Earth. If the density of these newly discovered white dwarfs is indicative of the rest of the galaxy's halo, these dead stars would comprise at least three percent of the dark matter of the halo, and perhaps as much as 35 percent."

Porfiry writes "An international team of astronomers has detected what could be a significant portion of the galactic dark matter that has eluded astronomers for nearly 70 years. Scanning digitized images of the southern sky, the team found 38 previously unseen cool white dwarfs within about 450 light years of Earth. If the density of these newly discovered white dwarfs is indicative of the rest of the galaxy's halo, these dead stars would comprise at least three percent of the dark matter of the halo, and perhaps as much as 35 percent."