Slashdot Mirror

devn2k writes "At the first annual WiFi Shootout at DefCon in Las Vegas, Adversarial Science Lab won the contest to shoot a wireless signal across the Nevada desert, with a distance of 35.2196 miles. The antenna was built from metal poles, window screen mesh, cardboard, duct tape, and aluminum foil! According to the official contest page, the antenna was designed the night before the contest, its component parts were purchased for $98 at Home Depot, and the next day it was built completely from scratch in the desert, on the side of the mountain, in the rain."

Anonymous Coward writes "As many a Slashdotter has pointed out, musicians make their money not from selling records but from going on tour. Now record labels are trying to get a piece of the action. 'Now the music labels, hungry for revenue from any source, are mulling over whether to make a grab for a piece of the tour biz. One company already has: In October EMI Recorded Music signed a deal with Brit singer Robbie Williams that gives the label a cut of the pop star's merchandise, publishing, touring revenue and sponsorship.'"

BuzzSkyline writes "The Hulk may be animated, but the Gammasphere that turns Bruce Banner's hissy fits into raging rampages is real. It's based on a gamma ray detector used at the Berkeley and Argonne National Labs. The actual machine doesn't make monsters, but it helps in studies of nuclear monstrosities. The American Institute of Physics reports on Gammasphere and its role in the movie at Inside Science News Service."

reiners writes "DevX.com has an interesting interview with David Arthur (dgarthur), the 2003 TopCoder Collegiate Challenge winner. Arthur discusses many interesting topics: the similarities between TopCoder problems and math problems, why TopCoder performance is positively correlated with 'real-life' programming performance, and why game programming is where the action is."

Anonymous Coward writes "ABC News is running a story which talks about the next two rovers to explore Mars which will be launched in June of this year. NASA is borrowing some things from the Pathfinder mission to help insure a success as well as doing extensive testing which was apparently not done for the Mars Polar Lander. From the article: 'The two new rovers, which are about the size of a golf cart, will have more power and greater mobility than the Pathfinder's Sojourner rover. Both should be able to trek up to 44 yards across the surface every Martian day (24 Earth hours and 37 Earth minutes).'"

Dean Siren writes "Moviehole.net reports that James Cameron wants to direct a live action Battle Angel Alita movie. Cameron says, "The issue is will it be the next film, or will it be the one after the next film? That's really all there is to it at this point. We've done a tremendous amount of design for the film, we're fine-tuning the script, it's just a matter of time." As for the movie itself, "Motorball might find its way more into the second film - I definitely want to do more than one film. I want to create a world and a character that can go through at least one more film, possibly more. And that's not just for the classic financial reasons, it's just that I think there's a possibility for a real mythology here, so I feel that this is a good canvas to do something big that's got more scope." UK Anime and The Z Review are also reporting." I enjoyed the original Battle Angel Alita. It left me feeling like so much more could be done with it. It'll be interesting to see what comes of this one.

Ursus Maximus contributes this review of Python in a Nutshell, writing "Perhaps the best book about Python ever written, this is the perfect capstone to anyone's library of Pythonic books, and also the perfect introduction to Python for anyone well versed in other programming languages. For newbies to programming, this would still be a good second book after a good introductory book on Python, such as Learning Python by Mark Lutz." Read on for the rest of his review. Python in a Nutshell author Alex Martelli pages 636 pages publisher O'Reilly rating Excellent, superb, 5 stars reviewer Ron Stephens ISBN 0596001886 summary Complete reference book for the Python programming language

Written by my favorite author and Pythonista, Alex Martelli, this book manages to fill three roles in extremely pleasing fashion. First and foremost to me, it is a great read, straight through. Mr. Martelli's prose is always sparkling and always keeps the reader interested. No matter how many Python books you have read, you will learn some nuances from this book, and it is about the best review of the whole Pythonic subject matter that I can imagine. While there is absolutely no fluff whatsoever in these 636 pages, it still makes for rather easy reading because the explanations are so clearly thought out and explored as to lead one gently to understanding, without in any way being verbose. It is obvious that Alex Martelli took his time and put in sufficient thought, effort, and intellectual elbow-grease to make this work a classic for all time.

Secondly, this book is the ultimate Pythonic reference book, the best fit to this role I have yet seen. You will keep this book in the most cherished spot on your book shelf, or else right at your side on your computer desk, because you can almost instantly find any topic on which you need to brush up, in the midst of a programming project.

Third, Python in a Nutshell is the most up-to-date book on Python (as of April 2003) and includes the best and most complete expositions yet on the new features introduced in Python 2.2 and 2.3. These topics are not only covered in depth, they are integrated into the text in their proper positions and relationships to the language as a whole. They are explained better here than I have seen anywhere else, so much so as to make them not only understandable to me (a duffer), but indeed so that they appear seamlessly Pythonic, as if they had been a part of the language since version 1.0. Topics explored in depth include new style classes, static methods, class methods, nested scopes, iterators, generators, and new style division. List comprehensions are made not only comprehensible but indeed intuitive.

The book is surprisingly complete. It covers the core language as well as the most popular libraries and extension modules. It is difficult to choose any one portion of the book to highlight for extra praise, as all topics are treated so well. It is a complete book, the new definitive book about Python.

Everything about this book speaks of quality. In addition to the top notch writing and editing, O'Reilly really did the right thing and published this book printed on the highest quality paper, paper so thin that the 636 pages are encompassed in a book much thinner than one would expect for such a size, but strong enough to resist wear and tear. The text is most pleasing to the eye. Holding the book, and turning its pages, gives one a feeling of satisfaction.

Any job worth doing is worth doing well. Alex Martelli and O'Reilly have done justice to a topic dear to our hearts, the Python programming language. Perhaps, in years to come, the passage of time may make this book to be no longer the most up-to-date reference on the newest features added to Python. But time can not erase the quality craftsmanship and the shear joy of reading such a well thought out masterpiece of Pythonic literature.

You can purchase Python in a Nutshell from bn.com. Slashdot welcomes readers' book reviews -- to see your own review here, read the book review guidelines, then visit the submission page. Ron Stephens would also like you to check out Python City, with "27+ reviews of books about Python. 67+ links to online tutorials about Python and related subjects Daily newsfeed of Pythonic web articles, new sourceforge projects, etc."

Fifster asks: "Has anyone noticed any trends in terms of printer quality nowadays? Perhaps it's just me being nostalgic, but I used to have an old HP Deskjet 500 maybe...ten years ago, and it worked for years. Sure, it wasn't colour, and it was noisy and somewhat slow, but it never died. After I decided to retire it and buy a fancy new colour printer with features I don't really need, I've gone through about a printer a year. I finally decided to get a Brother HL-1440 laser printer to avoid the cost of cartridges after my last HP died after I replaced an expensive cartridge. Has anyone else noticed this trend of poorer and poorer quality printers, at least in terms of life expectancy?"

BrianWCarver writes "The BBC is reporting that scientists have set a new internet speed record by transferring 6.7 gigabytes of data (the equivalent of 4 hours of DVD-quality movies) across 10,978 kilometres (6,800 miles), from Sunnyvale in the US to Amsterdam in Holland, in less than one minute. Average speed: more than 923 megabits per second, or more than 3,500 times faster than a typical home broadband connection. The data was sent across the Internet2 network. Stanford Linear Accelerator Center (Slac) Computer Services participated in the record-breaking event. Slac has an interest in such high-speed transfers as they have accumulated the largest known database in the world, which grows at one terabyte per day."

BrianWCarver writes "The Chronicle of Higher Education has the most detailed article I've yet seen on Microsoft's Palladium architecture. The article discusses the potential Palladium has to give publishers power to eliminate fair use and the potential for software manufacturers to use Palladium to enforce shrink-wrap licenses. Comments from several great sources including, Ed Felten (Freedom to Tinker), Eben Moglen (pro-bono counsel for the Free Software Foundation and recent Slashdot interviewee), and Seth Schoen (Electronic Frontier Foundation) among many others. Key quotations from article: Palladium could create 'a closed system, in which each piece of knowledge in the world is identified with a particular owner, and that owner has a right to resist its copying, modification, and redistribution. In such a scenario the very concept of fair use has been lost.' 'Palladium will "turn the clock back" to the days before online information was widely available.' and 'Microsoft could decide to lock everything up.'"

rgmoore writes "MacNN is reporting that Microsoft will finally make a full-fledged Exchange client for Mac OS X. Today, Mac users can only access the full range of Exchange services by using Outlook 2001, available only under Mac OS. Mac OS X users could either use Entourage, or they could run Outlook 2001 under the Classic environment. Microsoft is now promising to update Entourage so that it will be able to access all of Exchange's services, and they're even promising it will be available as a free update. Since many companies love to use Exchange and have made a big deal of Mac OS X's lack of a viable client, this is a big step forward for Mac users in a corporate environment."

Anonymous Coward writes "While not the best source for gaming information, CNNs Technology section has a review of Ubi Softs Dragon's Lair 3D. Long story short, according to the writer Marc Saltzman, the game isn't worth it. In fact, the opening paragraph says, 'The only thing worse than a lousy video game is when it taints a well-respected, 20-year-old franchise.' One interesting tidbit from the article, the original Dragon's Lair is one of only three video games on display at the Smithsonian. The other two games being Pac-Man and Pong."

coder_ asks: "Has anyone had success blocking the latest versions of this annoying P2P application in a network-wide context? Previously, people have been told to block a specific port, etc, yet as expected, Kazaa has found an easy solution to this. Apparently, when a connection via default port is not available, Kazaa makes encrypted http requests through port 80, making it rather difficult to now block. If anyone has had success in doing so, I would love to hear from you."

Anonymous Coward writes "Mission operations for the Galileo space probe, currently orbiting Jupiter, are scheduled to be shut down at the end of this month. Once a month thereafter scientists will check on the probe until September when the probe will be ordered to crash into Jupiter. The $1.5 billion mission met 70 percent of its science objectives and made a number of serendipitous discoveries along the way -- despite a range of problems."

Guppy06 writes "Throwing their hats into a ring that includes News Corporation, Cablevision, and General Electric, this NYT article (yadda yadda yadda) reports that #2 Baby Bell SBC is interested in buying DirecTV. After federal and state anti-trust authorities shot down DirecTV's purchase of EchoStar recently, their purchase by a corporation that already has its own state-mandated telephone monopoly is... "interesting" to say the least. Those of us who dislike government monopolies are left hoping either News or GE wins this one (if a sale even takes place)." One of the other suitors for DirecTV has been Murdoch's Fox.

Shadowcat writes "George Lucas is consolidating his galaxy, merging LucasArts, Lucas Digital (ILM & Skywalker Sound), Lucas Licensing, and Lucasfilm into one mega-corporation to provide a single place to create all sorts of media. You can find the article on SF Chronicle Site."

Anonymous Coward writes "Researchers at the United Nations University in Tokyo studied the physical and environmental costs to produce one 32-megabyte DRAM chip. Their conclusion? The UNU team found that to make every one of the millions manufactured each year requires 32 kg of water, 1.6 kg of fossil fuels, 700 grams of elemental gases (mainly nitrogen), and 72 grams of chemicals (hundreds are used, including lethal arsine gas and corrosive hydrogen fluoride)."

Ursus Maximus writes "Scripting Language City is for folks who want to learn more about the future of this increasingly important subset of the programming universe. Scripting languages are not just for odd jobs anymore ;-))). Special attention is paid to four languages in Python City, Ruby City, Perl City, and JavaScript Expert Systems which includes a Scripting Language Chooser Program as well as a Basketball Expert Ssystem and a Football Expert System that are certainly something different from the usual same old mouse-over scripts usually found on JavaScript sites. There is also a web spider program that scrapes the web daily and provides updated lists of new web articles on scripting languages, with seperates outputs for each of the featured languages. as added bonuses, there is a page of essays and resources on open source and the free software movement called Farnham's Freehold and a page called The Linux Chronicles that follows the experiences of a Linux newbie with wit and humor. Not a slick professional web site, Scripting Language City is a work of love by a paramour of everything connected with scripting languages, open source, and the programming of free software."

MrChubble writes "A quote from the cartoon network Adult Swim FAQ: "Starting January 12th the block will be extended to five nights a week (Sunday-Thursday) 11pm-2am et/pt and FUTURAMA will be added to the schedule." Sounds like fun to me." Jamie asks: it's nice to get confirmation of reruns, but will they be buying new episodes? Anyone know?

Rerekuka writes "Imagine your home town is built on a moonscape, epic in cracked earth, hard sun, dust storms, thunderstorms, rainbow sherbet sunrises and tie-dyed sunsets that move you and your neighbors to applause. Imagine art born from 25,000 of your closest friends, from you, lining the streets and filling the dustbowl playa: a radiant cathedral built from recycled plastic "stained glass," a filigreed temple-mausoleum filled with messages to friends who have passed on, a coffin made of gun metal, a Tesla coil taunted by a wacky scientist, an art and philosophy-lined labyrinth, oases sprouting lawns and ferns." There's been a lot written about Burning Man; I especially like Bruce Sterling's report about it for Wired in 1996. Read on for Rerekuka's review of Holly Kreuter's book about the festival. Drama in the Desert: The Sights and Sounds of Burning Man author Holly Kreuter pages 144 publisher Raised Barn Press rating 9.5 reviewer Nina Rene Soreco ISBN 0-9721789-0-2 summary Multimedia immersion into the Burning Man culture. Imagine the only vehicles in the streets are art cars, like behemoth metal dragons spouting fire and spaghetti western covered wagons. Imagine strangers who would read to you from William Carlos Williams, offer you a snow cone or a Margarita. Imagine folk costumed in everything and nothing imaginable. Imagine walking into any jazz joint or grilled cheese stand, or getting your hair washed or your feet massaged, and your money is no good because this town operates on a gift economy. Imagine that everybody Leaves No Trace. Imagine diversity coexisting with common ritual - ritual based on radical free expression and purification by fire. Imagine a place where creation and impermanence, innocence and experience, the ridiculous and the sublime, are honored as facets of the same jewel. Imagine this is no fantasy.

Drama in the Desert: The Sights and Sounds of Burning Man is a compelling multimedia chronicle of life in Black Rock City, hometown to some 25,000+ "burners" who gather yearly over Labor Day week for the Burning Man festival in Nevada's Black Rock Desert. The book and accompanying DVD contain the stunning photography of Holly Kreuter and the artwork and voices of Burning Man participants, including an introduction by bestselling author Dave Eggers and a foreward by Burning Man founder Larry Harvey. The 74-minute DVD is, in Kreuter's words, "the book on steroids." Produced by Michael Lazar, the DVD showcases 560 of the author's images in a frame as large as your screen, and includes interviews with some of the artists and Larry Harvey. Sean Abreu's mesmeric, tribal soundtrack to the DVD is available separately. The CD drew mystified appreciation from a coworker who meandered into my cube, the DVD is an immersive meditation, and the book, gorgeously designed by Lisa Hoffman, has found its home on this reviewer's coffee table.

"How was it?" she asks, and attempts are made.
- Shannon Coulter, in a poem by the same name

Holly Kreuter's full-color images (283 in the book, 560 in the DVD), spanning five years of Burning Man citizenry, artwork, events, and land- and skyscapes, are captivating, both in the subjects she chooses and her own interpretive style. Some of the photos are stark and disturbing, such as the deteriorating iron, mesh-fleshed skeleton kneeling on the ashen earth, howling at the sky. Some are vibrant and whimsical, like the many-hued, body-painted folk in one mischievous tableau, the Ice Cream Freezing Man truck, the colorful, life-sized "chess" board, the city aglow with lights and electro-luminescent (EL) wire. Then there's the artwork, bewitchingly captured by Kreuter, that just falls into the "astounding" category: the Plastic Chapel, the Faces, the Temple of Tears, the Emerald City, the man made of books. The images of the tornado-esque dust devils, spinning like dervishes off the blazing 100-foot Man, are epic.

The book is sprinkled with diverse forms of word art, from haiku to narrative, written in strokes as broad as the spectrum of art at Burning Man. Overall, the writing is strong and bold; in a few places, it is a bit uneven or could be pared down, but these instances are minor. Writers include luminaries such as Free Will astrologer and author Rob Brezney, poet and author William L. Fox, and Chris Taylor, San Francisco bureau chief for Time Magazine.

All of the stories are intimate and real, describing journey, vulnerability, humor, awe, magic, and epiphany. One woman speaks of her initial shyness about slipping into the hot springs nude. (She gets beyond it.) John Kelly's testosterone-infused "Let Me Be Dangerous" dreams of riding in the back of a pickup truck going 60 on the playa:

. . . "Mind if I catch a ride?" I asked.
"You fall, you die," the driver answered.
"That's fair," I said.

Rob Brezsny speaks of an experience common in Black Rock City: "I have never in my life felt surrounded by such relaxing fertility, by so much luxuriant conviviality. For many days now I have glided without even a taint of fear through a city of 25,000 people. Unknown allies and I have spotted each other from a block away and run to each other like long-lost friends from previous incarnations . . . I have been in love with more than a few women in my life, but this is the first time I've plunged into the throes of spiritual infatuation with a time and place."

Tom Kramer's simple "Together," describes a premise intrinsic to the Burning Man community, a Buddha gift ripe for the world:

That we appear
separate
is the illusion.

At one time
the desert was
a mountain.

And we were children.

Holly Kreuter has been a Burning Man participant since 1995 and a staffer for Burning Man since 1997. She also founded Raised Barn Press, the production and publishing company that lovingly produced Drama in the Desert.

If you are a citizen of Burning Man ensconced in your everyday life, Drama in the Desert is a soulful trip Home. If you haven't been, Kreuter's collection is a playful, evocative dip into a culture as rich and exotic as can be found.

Experience samples of the text and images from the book, the DVD, and the separate CD at www.desertdrama.com, where you can also order the collection. www.raisedbarnpress.com will get you to the publishing company, a story in itself.

. . . in the great fire
my heart is burnished

brushed
and burned clean

in the great fire
I fall in love again
only this time
I am awake
and the azure sky is as transparent as my imagination

-Mark Jan Wlodarkiewicz, My Heart Has Been Burned Clean

You can purchase Drama in the Desert: The Sights and Sounds of Burning Man from bn.com. Slashdot welcomes readers' book reviews -- to see your own review here, read the book review guidelines, then visit the submission page.

Anonymous Coward writes "CNN has posted a story regarding the overabundance of fiber lines that were laid during the 90s gold rush along Oregons Interstate 5 corridor. While over 140,000 miles of fiber has been laid 95 percent of the fiber goes unused and roughly half of the companies who laid the fiber are now gone. The article goes on to further say that even with all that fiber, there is little availability to the consumer because either the local connections aren't there or, because of monopolization by phone companies, too expensive. Even for businesses."

linuxjack55 writes "Kerneltrap is reporting a data-corrupting bug in the ext3 code of kernel 2.4.20. The scope of the problem (and workarounds) are described in the article, which also includes a link to an interesting interview with kernel hacker Andrew Morton. In it, he states that the '2.4.x core has only stabilized very recently' and the 2.4.x kernel is 'even now...in a late beta state.' He was also asked when the 2.4 kernel could be considered stable. His reply: 'Six months, perhaps?' If that prediction is accurate, 2.6.x could arrive before a 'stable' version of 2.4.x does." (The interview with Morton is from last February -- how stable you consider 2.4 right now is up to you.)

descubes writes "A recent article asked about improvements in programming. Concept programming is a very simple idea to improve programming: program code should reflect application-domain concepts. What is amazing is not the idea itself, but how often we don't apply it, and how much existing tools and techniques can get in the way without us even realizing it. To be able to represent all concepts equally well, we need tools that don't force a particular, restricted vocabulary on us. The Mozart project is a Free Software project to implement concept-programming development tools. It includes the Coda universal intermediate language, the Melody persistent program representation, the Moka Java-to-Java extensible compiler, and a fairly advanced front-end for a new programming language called XL. In the long run, Mozart can give the Free Software community a foundation for something as powerful as Charles Simonyi's Intentional Programming."

Szplug writes "GCC 3.2.1 has been released; many C++ bugs, & notably for x86 users, MMX code generation has been fixed. From the notice, ".. the number of bug fixes is quite large, so it is strongly recommended that users of earlier GCC 3.x releases upgrade to GCC 3.2.1."
Here are overview and detailed change notices. Download here [gnu mirror site]."

Phil writes "The MSS Initiative was started by Richard van den Berg and myself to combat sites that are broken (enable Path MTU Discovery AND block ICMP 3,4) which include such big sites as SecurityFocus and CERT (causing those behind PPPoE and other less-than-1500-MTU-protocols to be unable to view the sites). This past week we were priveleged enough to be able to present a paper at the 16th LISA Systems Administration Conference! Check out the paper and slides and be sure, like many members of the audience, to fix the sites you administer!"

Phil writes "The MSS Initiative was started by Richard van den Berg and myself to combat sites that are broken (enable Path MTU Discovery AND block ICMP 3,4) which include such big sites as SecurityFocus and CERT (causing those behind PPPoE and other less-than-1500-MTU-protocols to be unable to view the sites). This past week we were priveleged enough to be able to present a paper at the 16th LISA Systems Administration Conference! Check out the paper and slides and be sure, like many members of the audience, to fix the sites you administer!"

Phil writes "The MSS Initiative was started by Richard van den Berg and myself to combat sites that are broken (enable Path MTU Discovery AND block ICMP 3,4) which include such big sites as SecurityFocus and CERT (causing those behind PPPoE and other less-than-1500-MTU-protocols to be unable to view the sites). This past week we were priveleged enough to be able to present a paper at the 16th LISA Systems Administration Conference! Check out the paper and slides and be sure, like many members of the audience, to fix the sites you administer!"

BrianWCarver writes "SiliconValley.com carries an AP report by Anick Jesdanun indicating that ICANN has given Karl Auerbach the boot by eliminating his seat as well as the four other publicly elected seats on ICANN's board. ICANN is the internet's key oversight body, managing the Top-Level Domains (TLDs). You may recall from this previous Slashdot story that Auerbach is the director who successfully sued ICANN to receive access to their records without having to sign a Non-Disclosure Agreement. 'Though soon leaving the ICANN board, Auerbach vows to keep complaining. And he leaves with no regrets -- he'd do it again.' It'll now be up to organizations like ICANNWatch to keep an eye on ICANN for the public. Is that good enough?'"

richeddy asks: "I am going to start teaching elementary school in the near future. As a new teacher, I have the crazy idea that I might be able to actually teach my students a few things that other teachers just don't seem to be able to teach. This involves teaching methods that might be a bit unconventional. To this end, I am interested in building and installing a network of classroom computers that the students can use in real-world ways. That's right, no glorified flash cards in my classroom! I want my students using computers for research, presentations, writing, data collection and analysis, etc. In order to do this, I am going to have to personally foot the bill for the hardware and software. So I am looking for suggestions on what direction to go. I figure that I will need 5-7 computers to accomplish my vision, and I can't imagine paying for Windows and Windows apps. It looks like my only real option is to build the systems myself, which isn't a problem. Any ideas? Suggestions? Comments?"

Anonymous Coward writes "ABC News is running a very interesting article about the story behind those rocket belts you've seen in some movies. Apparently there are only three known to exist but one of them has gone missing leaving a trail of death and intrigue in its wake. From the article: 'One of its developers was found beaten to death in his Houston home, another is a suspect in the killing, and a third faces a possible life sentence for kidnapping the second and holding him hostage for seven days with a hood over his head.'"

MooseGuy529 writes "About two years ago, for Christmas of 2000, Cybiko, a Russian company (IIRC) created the Cybiko, a handheld wireless device for teens/"tweens." They later created the CybikoXtreme, a sweeter-looking model with voice chat/recording and a nicer keyboard. Unfortunately the wireless didn't go that far (150-300 ft max) and Cybiko went on to UK markets and then to making games for cell phones. However, I have seen several cool uses of Cybiko, including Using the Cybiko for APRS over Ham Radio and using MiaChat to connect the Cybiko to AIM. People have suggested things such as using them in schools for wireless roll-call or such things. My question for Slashdot is does anyone know of or have ideas for any interesting uses of Cybiko?" For the curious, Ask Slashdot last did a story on the Cybiko back in February of 2001.

oxgoad writes "Need a closed-form algorithm to derive square roots? Stymied by strange and scary results from your favorite compiler's math library? Math Toolkit for Real-Time Programming by Jack W. Crenshaw attempts to shed some numerical light. Read on for the goods." Oxgoad's review continues below. Math Toolkit for Real-Time Programming author Jack W. Crenshaw pages 466 publisher CMP Books rating 8 reviewer oxgoad ISBN 1929629095 summary A casual discussion of algorithms ranging from abs to numerical calculus.

Who & What

Jack W. Crenshaw, Ph.D. (Physics) wrote his first computer program in 1956 for an IBM 650. He has been working with real-time software for embedded systems ever since -- contributing several years to NASA during the Mercury, Gemini, and Apollo programs. In addition to other activities, he is currently a contributing editor for Embedded Systems Programming magazine and author of the Programmer's Toolbox column.

In Math Toolkit for Real-Time Programming, his effort is focused on describing the pitfalls of vendor-provided math libraries and providing robust replacements. In section one he gives a thorough overview of constants and the various manners in which to declare them, naming conventions, and error handling. As the work progresses, in section two, he builds a library of proven algorithms ranging from square roots to trigonometrical functions to logarithms. Did you suffer through calculus in college with a barely passing grade? Section three will teach you more about numerical calculus in a half-hour than you may have learned in three semesters.

Kudos

Math Toolkit is written in an easy to understand anecdotal manner. You might be tempted to think that the author was animatedly relating the history of computing square roots while having lunch with you. This method works very well and keeps what could be a rather heavy subject from becoming too much of a burden. Most chapters have historical tidbits liberally sprinkled throughout.

Even if college algebra left you with post-traumatic stress disorder, you will not have any trouble with section two. Indeed, you may find yourself intently following the author on the trail of the perfect arctangent algorithm -- much as a sleuth on the trail of a villain.

The depth of knowledge shown, and its presentation, is exceptional. The author's years of experience are evident in his self-confident writing style. You will rarely see a clearer overview of numerical calculus. Quibbles

The cover of the book states: "Do big math on small machines." This, combined with the Real-Time Programming phrase in the title, might lead one to believe that the book's primary audience is intended to be the embedded microcontroller crowd. Sadly, not so. There is very little here for the die-hard assembler programmer other than some very handy integer square root and sine routines - and these examples are in C++. Based on the cover, I would have liked to see a greater emphasis on processors lacking a floating point unit. Also, some code examples in pseudo-assembler would have been welcome, as the author chose C++ as the language of choice for all examples.

Crimes

As is so often the case nowadays, there are various typographical errors scattered throughout. This seems to be an epidemic in current technical books. Fortunately, it didn't affect the readability of Math Toolkit.

Conclusions

I believe Math Toolkit for Real-Time Programming would be a great, perhaps mandatory, addition to the bookshelf of anyone that is involved in writing code that has a heavy math component. Other than the somewhat misleading cover, I cannot find anything truly negative to say about this work. Congratulations are in order to Mr. Crenshaw on a job well done.

The book also includes a CD-ROM of all example source code. In reality, to get the best benefit from the book, you should mostly ignore the CD-ROM and work through the examples. To quote the author: "Never trust a person who merely hands you an equation."

Table of Contents

1. Getting The Constants Right
2. A Few Easy Pieces
3. Dealing with Errors
4. Fundamental Functions
5. Getting the Sines Right
6. Arctangents: An Angle-Space Odyssey
7. Logging in the Answers
8. Numerical Calculus
9. Calculus by the Numbers
10. Putting Numerical Calculus to Work
11. The Runge-Kutta Method
12. Dynamic Simulation

• Appendix A: A C++ Tools Library

Disclosure

I received a review copy of this book from the publisher. Thus, my loyalties and opinions may be completely skewed. Caveat Lector.

You can purchase Math Toolkit for Real-Time Programming from bn.com. Slashdot welcomes readers' book reviews -- to see your own review here, read the book review guidelines, then visit the submission page.

DanCracker asks: "I've just inherited a 34 lb metorite from my grandfather. As a child, I was alwasy fascinated by it, but never developed my intrest. As much as this means to me, I've got little need nor room for such a thing. What is the next course of action I should take? Contact labs or universities? Post it on eBay? Help!"

Anonymous Coward writes "CNN has posted the story of the failure of the amateur rocket launch that was reported in a previous Slashdot story. 'The launch was spectacular and the rocket was performing as planned. However, the rocket experienced motor failure during the flight and the flight was terminated," said Eric Knight, co-leader of the CSXT mission.' NASA is planning to mount a camera on the external fuel tank and broadcast an October 2nd shuttle launch.

symbolic writes "This article on the Register explains their experience with Creative's first attempt at supporting DRM, and also reviews a sneaky little technique for 'easing' DRM into peoples' lives via a free Costello preview CD. Two of the tracks are free from any DRM, but for the two that are DRM-enabled, you have to activate the right to listen to them (up to four times), by accessing a central server via the net. For those in the know, the doublespeak used to inform users of any actions they need to take to enable their DRM rights might be quite amusing. To wit: 'The content you are accessing requires an additional level of security. In order to play it, you will need to update your Digital Rights Management Installation.' Others, however, will think they're getting something, when they're actually having something taken away from them. It's a matter of time to see if consumers will flat-out reject this new 'enabling' technology, or let it seep into and infect their lives like the disease that it is."

goldspider asks: "I hope this is received in the spirit it was intended in. In a recent Reuters article, the Internet as a whole has been referred to as 'collateral damage' of the U.S.-led War on Terrorism, because of the perceived loss in privacy and online rights as a result of post-9/11 legislation. I am curious to hear about some specific examples of how this legislation has personally or professionally affected the everyday lives of Slashdot readers."

Metism writes: "The voice on the other end of the phone does not tell you to 'please listen carefully, as our menu options have changed'. E-mail inquiries do not pretend as though they were never sent. More and more companies are finding out that people actually want to interact with other real people, not pseudo-intelligent machines that can't respond to simple things like 'Hi, how are you?' Did pseudo-intelligent humans forget something so obvious? Companies like LivePerson help clients from large ISPs to small libraries communicate one-on-one with people via the web. Softroad takes the concept of live help one step further by allowing anyone, anywhere access to their live Internet surfers via SMS, 2-way pager, or other mobile device. There's nothing like human ingenuity when it comes to questions more complex than 'what's my balance?' or 'what's the weather in Miami?'. But are more companies going to listen?"

Anonymous Coward writes "Researchers at the Biomedical Primate Research Center in The Netherlands have come up with a theory as to why modern chimps don't develop AIDS and its variants. The chimps in the study were found to share a usually uniform cluster of genes in the area that controls their immune systems' defenses against disease. This lack of genetic diversity suggests that a lethal sickness attacked chimps in the distant past. The theory postulates that approximately 2 million years ago an AIDS-like epidemic wiped out a large portion of the chimpanzee population. Those that survived developed an immunity to AIDS and its variants. If this theory holds true it may explain why some humans who are repeatedly exposed to HIV don't get sick."

DrunkenTerror writes "NPR is reporting this story about a virtual reality schizophrenia simulation developed by Janssen Pharmaceutica, a company that makes a drug for schizophrenia. The simulation (seen through a VR HMD) lets the user experience the world through the eyes and ears of a person with schizophrenic illness. The rig was designed as an education tool for doctors and others who want a more visceral understanding of the illness. The voices in the RealAudio slideshow are really overwhelming. Janssen is said to be considering converting the VR content to DVD for wider release. Helloooooo, future of trip-hop!"

Peter DeWeese asks: "For beginners in the field of anatomical robots, it is quite hard to find resources and shops from which to obtain small parts to build joints. Customized ball joints and a few other types are all that should be needed, and I am sure that others out there have built such machines from their own basements. Does anyone have any good resources on how to build/obtain small unarticulated mechanical joints that would be suitable? Please keep in mind that beginners often don't have metal lathes and high temperature welding torches."

Slashback items tonight include a hopeful picture of the Futurama future, good news for Ziff-Davis fans worried about bankruptcy, video-release updates for two films reviewed on Slashdot, and more -- read on for the details.

This would be reason enough to have cable. MrChubble writes: "Seems that futurama isn't as dead as previously believed. Here is a quote from a someone's experience at ComicCon: "Julie Schwartz Slide Oddball Comics Show (Hilarious as usual), and at the FUTURAMA panel they showed a preview of a forthcoming episode in which Fry, Leela and Bender become super-heroes. One thing they didn't mention at the panel, was the news that FUTURAMA would be joining Cartoon Network's ADULT SWIM in the near future." Is this too good to be true?"

We have semi-successfully identified a potential security problem ... Jim Driggers writes: "You guys recently had an article on how to escalate one's security status on a Win32 machine. The article included a link to a download called shatter.exe. My Norton antivirus says it contains the beavuh virus. I don't have IIS 5, so it is not a worry for me, but I thought you guys should know."

Actually, it shouldn't be a worry for anyone: apparently, the shatter.exe file triggers some anti-virus software, but according to several readers this is a false alarm.

How to win friends and influence people. In response to this posting ("Congress to Ashcroft: Go After Song Swappers"), Declan McCullagh writes: "FYI I've placed the congressional letter to Attorney General Ashcroft here: Also see this analysis from last summer on why P2P piracy violates the federal No Electronic Theft act: 'Duncan Frissell on why Napster users are federal felons'."

Up against the wall (of videos). An anonymous reader writes "Looks like the film Revolution OS finally makes it to a small screen near you. First copies available at HP booth at LinuxWorld, San Francisco.

It includes footage from LinuxWorld '99 in San Jose where Stallman accepts the "Linus Torvalds Award" from the hand of Linus and proceeds to talk about why Linux should be called GNU/Linux". This is a treasure."

In addition, for the skateboard-inclined, note that Dogtown and Z-Boys is finally out on DVD, too.

Slimmer and trimmer like I ought to be. prostoalex writes "The rumors of Ziff Davis filing for Chapter 11 can just stay rumors, as company claimed it achieved a compromise with bondholders on financial restructuring. Recently ZD has been shutting down a sleuth of print publications including Yahoo! Internet Life, Family PC, Expedia Travels, Interactive Week, eShopper and Smart Business. It is still a publisher of eWeek, PC Magazine, CIO Insight, ExtremeTech and other computer and gaming magazines."

dtmos writes "An update on this old story -- Maynard Hill's attempt to fly an 11-lb. model airplane across the Atlantic (from Newfoundland to Ireland) is due to begin tomorrow night, Newfoundland time. This would be the first transatlantic flight by a true model under FAI rules (this plane was too large to qualify). News and updates, background information, some technical info."

BrianWCarver writes "The Chronicle of Higher Education has an interview with Ben Edelman, the Harvard law student and internet researcher who is bringing suit against the DMCA with the ACLU. Slashdot covered the announcement of this legal challenge. To refresh your memory, Edelman wants to be able to research the lists of sites blocked by internet filtering software, and to be able to publish his research. He's no lawyer yet, but he responds quite well to several objections to the case."

Nofsck Ingcloo writes "Nando Times is reporting on a new model of black boxes to track teens' driving habits. 'This is like having a parent sitting next to him second by second.... The kids don't like it, but the parents love it.... Originally developed... for ambulances and fire trucks to reduce crashes, the black box is a stripped-down version of that model.' So, how long before the insurance companies persuade the states to mandate these devices in every car? Or raise our rates hugely and then give a little of it back if we put in the box?"

Another submitter sent in a related submission about the collision data recorders in many late-model cars - which serve a similar purpose as the black boxes described above, but generally only record the last five seconds before an accident.

geemon writes "With the recent stories of rental car companies using GPS to track how and where their patrons are using their vehicles, this information about autos from 1996 and newer having an airplane-like accident "black box" capability was a complete surprise. Tucked under the drivers seat of most GM vehicles, the "black box" can store a variety of info such as vehicle and engine speed, braking, and seat belt usage. Info from an accident reconstruction service that uses this data can be found here. Called "event data recorders", these devices were, "...Originally designed to improve air bag performance based on the severity of the collision, the event data recorder can tell traffic accident investigators about the car's speed; engine RPMs; how far the accelerator pedal was pressed; if the brakes were applied; whether the drivers seatbelt was buckled and what warning lights were on - all from five seconds before impact..." It seems that GM and perhaps Ford have been using this for some time. Here is one company that makes the Windows based retrieval hardware/software combo for $2500. Imagine the uses of this data that law enforcement, your insurance company, and lawyers may have after your next little mishap."

More information this evening (below) on Daniel Gomez-Ibanez' digital turntable, the Coble-Berman [T: not "Sherman," sorry] bill, moral-free domain registrars, Gator's un-requested link substitutions, and more. Enjoy!

Wouldn't be be nice if this didn't need to be a surprise? dklon writes: "I just got off the phone with Senate Warner's Office (R-VA). Senator Warner, and his compadre, Senator George Allen, both sit on the High Tech Committee, of which Senator Allen is the chairman. After sending them a strongly-worded letter yesterday, Mr. Warner's office was kind enough to call me back and let me know that the likelihood of Coble-Berman becoming law is slim-to-none. It is committee at the moment, and has only 1 sponsor at the moment in the Senate."

Make a joyful noise, and keep repeating it. mrspin writes "stage4 has an interview with Daniel Gomez-Ibanez a graduate from Stanford University who has designed and produced a 'Digital Turntable' that allows DJs to mix and scratch digital music using what looks like a conventional record player.

Daniel recently posted a short piece on Slashdot about his 'Digital Turntable'. In an email interview with stage4 he talks about what makes it different from other such products and the inspiration behind this hardware hack. stage4 is a community site dedicated to creative uses of technology and features a weekly music webcast via PirateTV"

Daniel also says (by email) that if "anyone would want a very unique sampling turntable I would sell more of them for around the cost of the parts because it would be fun to get them out there and get people playing with them." Even those parts aren't cheap (totaling around a thousand dollars) but handcrafted audio tools rarely are. Check his site for email address ;)

Please keep your Gator away from my eyeballs. EyesWideOpen writes "The New York Times is reporting that a preliminary injunction will be issued against Gator Corporation as a result of the company being sued by 10 web site publishers last month because they felt that the company's use of online pop-up ads violated copyright and trademark laws. 'In court Friday, Judge Hilton said that he found enough evidence to support the plaintiffs' claim that Gator's advertisements violated trademark laws in particular...he indicated that one issue was the proximity of Gator's pop-up ads to the publishers' trademarks.'"

You may already have won! We've had to run a number of pieces on unsavory renewal practices among the various registrars competing for your name-claiming business, but domain name scamming is sadly not confined to the U.S. kungfuftr writes: "I'm currently registering all my domains names through a company in the uk called 123reg who are very reasonable and run a good company. Today i got a letter from a company called "Domain Registry of Europe" saying that my domain name "kungfuftr.com" must be renewed. The form they sent looks like a bill and for someone who doesn't know too much about the DNS process it looks like something that should be filled in if they want to keep their domain. Of course if they do this their control of their domain will be transferred to a new registrar. Giving the company an official name as if they are the 'only' registrar in europe is pretty shady. Are companies reaching a new low?"

For when I get a larger hard drive ... TheRedHorse writes "The Yellow Dog Linux 2.3 ISO's have been released . Slashdot did a story about it YDL 2.3 before. Please remember to use the mirrors. Have fun."

You knew this would happen, right? JUSTONEMORELATTE writes "LightReading is reporting today that the EBone portion of KPNQwest's network has been bought for pennies on the dollar (or is that cents on the Euro?) by U.K.-based service provider Interoute Telecommunications. EBone had been valued at EU645 million back in March, today's deal is rumoured to be at about EU15 million, or about a 98% loss of value. Slashdot has covered the heroic efforts to keep the network alive, and talked about the shutdown of the same."

Genetics is never having to say "Am I your type, baby?" Teluial writes "Slashdot's previous story about ColonelPanic's genetic keyboard layout is taking an interesting development. *cue Spidey music* When we last left PMK he was trying his latest layout. Having found it "usable," he is now collecting Dvorak keystroke data and requesting volunteers of the QWERTY breed to also collect data to compare interesting findings against. Details near bottom of project page."

New Palm writes "It looks like pictures of a new Palm os5 device codenamed 'Oslo' have hit the web. www.pocketpcthought.com had them up, but after a phonecall from Palm's Director of Global Information Security, pulled the pictures. A number of people are mirroring them. Looks semi-legit - but who knows, and who knows how long the images will stay up?

An anonymous reader writes: "CNN has an interesting story about the scientists who are searching for proof that neutrinos have mass a half mile below Minnesota. Not alot of scientific theory but a good overall perspective on what is taking place. One of the more interesting quotes: "We're going to take a sawed-off shotgun and blast a bunch of neutrinos toward Minnesota and measure what sticks," said Marvin Marshak, a physics professor at the University of Minnesota."

sheetzam asks: "I am the manager of the mail system for a reasonable (3000 employees) sized media company. Recently a website has decided to post the e-mail addresses of a few of our employees, and suggest readers send those people abuse. We know we have no legal recourse for removing the e-mail addresses from the offending web site. We can't filter the abusive e-mail based on header information because it is coming from many places. Our only choice seems to be to change the person's e-mail address. If this were an abusive phone call, we'd know exactly how to handle it. But e-mail is quite different. How are others dealing with this?"

ruiner writes "Mandrake has announced their intention to support AMD's Hammer with a 64 bit version optimized for the new CPU. Redhat is also rumored to be following Suse's lead. 'This new generation of AMD Athlon and AMD Opteron processors is extremely exciting. A version of Mandrake Linux dedicated to these powerful 64-bit processors can certainly accelerate MandrakeSoft's growing adoption in the Linux corporate market' said Jacques Le Marois, CEO of MandrakeSoft."

Harry asks: "Last week I had a laps in judgement and subscribed to the Lindows Insider program. After playing with Lindows for a few days, I decided that Lindows was not worth my trouble and un-subscribed from the program. When I did so, I mentioned my disappointments and requested that they take a survey on Slashdot to see what Linux users really thought of their product. They stated they did and received 'great results and mostly positive feedback.' After having a chance to play with Lindows, I can not believe this to be true. So, my question is: What do Linux users really think of Lindows and will they support it?" I'm not aware of any such poll (maybe I missed it) and I don't remember many glowing reviews from our previous stories on Lindows. So maybe it's time to get the answer straight from the horses' mouth. Do you think Lindows is worth it?