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User: n1vux

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  1. Eta model not ETA Re:NOAA on Is FORTRAN Still Kicking? · · Score: 1

    FYI, of all the models, "Eta" is not an acronym but is named for the Greek letter parameter that it included as it's breakthrough. So like modern Perl (which has disavoweed both retronums), it's spelled leading-cap and not full-cap.

    (Since I'm still only reprocessing sounding files from the models, I'm using Perl. Not sure if I'll be able to use PDL or C++ when I make the leap to GRIB files, might have to get a Fortran.)

    -- I'm Pedantic, not Pompous; there's a difference!

  2. Re:Crypto repercusions? on Turns out, Primes are in P · · Score: 1

    Beautiful Troll!

    This is an excellent mockery of the "I am not a mathematician so I'll share my opinions anyway" sort of comment. The misspellings of key words are excellent too.

    But what dunces marked it Informative? Funny, yes, Troll, yes. On a real crypto board it would be flaimbait.

    (Disclaimer: I am not currently a practicing mathematician or computer security researcher, but I once was, many years ago.)

  3. Re:Reasons? on Radio Propagation and Unexpected Loss of Signal? · · Score: 1
    Portable radios such as your little Sony are notorious

    It is true that it's hard to build tracking filters or other forms of selective front ends into affordable portables. However, at least some of the Sony portables are better on FE overload than competitors. Most portables need an attenuator or an exteranl tuned filter to avoid overload with external antenna, but Sony ICF-7600G has behaved well on a short randomwire for me.

    Comments on FE Overload, local skip-zone both right on. HF isn't like MW where ground-wave is primary.

  4. Re:Disc of asteroid? Will it show phases? on Asteroid Fly-By on August 18 · · Score: 3, Informative
    I don't think anyone with a pair of binoculars is going to be able to discern phases on this asteroid.

    No, but rapid phasing will be discernable as a rapid drop in brightness, equivalent to apparent albedo drop -- much faster and less linear than increasing distance would account for. (Good point that we shouldn't expect to see the phasing, though. Nice to see back of the envelope reasonableness checks!)

    Sigs? We don't need no stinkin Sigs.

  5. Cellphones vs Efficiency on DoD Dreams of Efficient Spectrum Usage · · Score: 1

    Indeed, cellphones like internet-over-cable-tv, works fine if no-one is using it. In crowd scenes and disasters, it just gets jammed. Which is why at futbol/soccer matches, our family uses a mix of FRS, ham radio, and cellular SMS. SMS is much more efficient of spectrum than voice, much as UDP is more efficient than TCP.

    Adaptive spectrum use is exactly what hams and other trained radio operators do manually -- and most radio users are prohibited from doing by single-channel licensing. (FRS, GMRS, MURS, CB have a lesser but significant ability to change frequency -- hams uniquely have multi-band and multi-channel, often in the same radio.)

  6. Re: Doubt it on DoD Dreams of Efficient Spectrum Usage · · Score: 1

    The agency you diss so arrogantly is (Al Gore to the contrary) the agency that developed what became the original internet. Quite a few "shadowy eggheads" are funded by them. They used to have quite clueful PR whores at HQ, but I'm not sure who's minding the store these days.

    Sigs were good when email addrs had !

  7. to 31 or 32, 15, 255, and 1023 on fingers on Isn't it Time for Metric Time? · · Score: 1
    P.S. - In fact, it's possible to count up to 32 using just one hand (think binary), but I've never met anyone who does it intuitively.

    I don't know if I count as doing it intuitively since it started as a rather studied affectation, but I've been counting as high as 1023 on my fingers for more than 1_0100 years, possibly 1_1000 years, not just as a joke but sometimes because it's quicker than finding a calculator or piece of paper. I recently startled a colleague's son not only by claiming to count past a thousand on my fingers but starting to do so.

    It's a learnable skill; you just ripple the fingers like they were JK-flip-flops in a counter (without the stupid decade logic). Although sometimes I'll ignore the thumbs so the fingers form two nybbles of one byte, but that opens me to finger-biting joes so perhaps I should avoid that. ;-)

    As to the 31 v 32 debate, I carry to the other hand, either thumb to thumb (if aiming for 2**10) or index to index register (if aiming for 2**8).

    There are 10 kinds of people ... those who can count in binary and those who can't.
  8. Re:interesting on Built For Use · · Score: 1

    Did you read the book before saying "by the principles put forth in"? The author is an accomplished artist with both traditional and digital media and is hardly for banishment of art. She's paid her dues, was doing really nice bandwidth-limited (or RAM limited in those days) graphics for GUI branding before the web was born.

  9. Re:country ? Satellite and Terrestrial FDs on Field Day 2002 · · Score: 1
    Clarification: There are Two connected Field Days this weekend, ARRL and AMSAT.

    The newer event which you refer to, AMSAT FD, is world-wide, and lasts longer, satellite contacts only.

    ARRL FD is mostly Region II (the americas). In prior years, only US and Canadian stations competed, but this year all Region II (NAM/CAM/SAM) stations may compete. Contacts with I & III count for the Region II station, if the DX gives (or can be prompted to give) a proper Exchange (1D mostly likely, if they're home on commercial power).

    Many HF radio contests are worldwide in nature as you suggest. This one is not restricted to HF, but is MW-HF-VHF+, and is specifically termed an Operating Event. It is a mixture of a Contest and a wide-area Drill. It differs from a Simulated Emergency Test in not having a disaster scenario, and in having contest-rules and scoring; everyone is out in the field as if they were the affected area. We're demonstrating that we can restore communications locally and wide area from improvised positions. Other countries' national associations have their own Field Days on other weekends.

    A FD station may participate in both. The first AMSAT contact with full ARRL exchange is 100 bonus points on the ARRL, and each additional is another QSO point, and doesn't count against band/transmitter limits.

    73 de Bill N1VUX
    I'll be operating at W1BOS VHF+ positions, and visiting other Metro-Boston sites for ARES

  10. Professional security audits for Govt or Big ... on Recommendations for Third Party Security Audits? · · Score: 2, Interesting

    Back when the internet was young, I worked with some good folks who were doing this sort of audit, and researching for the answers, for the US Govt only. Many of them are now in private practice. (I'm no longer in government work nor primarily in Security these days, but I've kept track of the field as it's gotten relevant to everyone.) Pre-Enron, most businesses would use their Auditor's consulting arm. The security specialists were more for the Government and folks with particular problems. These days, I'd think everyone would want their audit done by specialists, but then, I thought that before.

    Anyway, the original questioner was asking for someone to help his East Coast State Goverment agency. There is one firm that grew out of the government consulting that I've both considered working for when I was consulting and also brought into my own .COM (before the bust) to discuss audits: AGCS Inc. They're east coast alright. One of their founders was the editor of the Orange Book. They've embraced the web and commercial networks while staying connected to government clients and research.

    (-: As a kindness I won't slash-dot the smaller ones that meet the same criteria ;-)

    The other top consultants to governments, large and small, will be among the presenters and organizers at New Security Paradigms Workshop (ref coverage).

    -- Bill Ricker aka n1vux

    Thanks to SUDO, no longer Root@anywhere ...

  11. Uh oh on Updated Slashdot Advertising Policy · · Score: 1

    Great April Fools gag, guys! Love the dry humor.

  12. 2200 tape Re:...record them to tape on Most Outrageous Vendor Lie Ever Told? · · Score: 1

    No, the Wang 2200 was a desktop; no 8", no card-reader. (You're thinking Wang Word Processing for the 8" and Wang VS for card?)

    On the Wang 2200, it was Cassette Tape ... higher grade tiny mechancial bits and medium than the audio cassette, but same form-factor. Tape drive was integrated and controled, a blocked device, not outboard streaming like on the early hobby computers.

    The 2200 later had an optional harddrive, who knows how small, we're talking 1970's here. It might have had an 8" floppy option, never saw one, but not 5.25".

    There was very little off-the-shelf software before the flourishing of CPM. So the druggist was SOL unless he hired a Consultant or a kid to program it. Only a few years later, CPM provided niche software and nearly commodity hardward, but not binary compatible, no standard BIOS yet.

    -- Bill

  13. Re:Not the same as cryptonomicon. on Optical Cryptography · · Score: 1
    Agreed, this is not a one-time pad.

    Initially sounds like the syncronized Dynamical Systems of the lasers are acting like optical syncronized feedback-shift-registers, and thus are pseudo-random number generators (PRNG's), which are classically not quite as secure as true one-time-pads.

    But by using a quantized variant of state variable of a continuous dynamical system as the key, they can, reyling on the Lorenz effect, avoid allowing a surreptious third party syncronizing a non-matched generator. Thus avoiding the deduce-the-PRNG-settings problem.

    However, there's still a key exchange problem. You have to have distrbuted matched pairs of these precision feedback lasers with anyone you want to communicate with this way. Hardly public key! In order to get the cost down, I'd hope these are semi-lasers. But if they're mass-produceable, how can I trust the manufacturer to not create more than 2 identical at a time? If they can make them cheap enough and softkeyable, what's to stop NSA from building a Huge Parallel Array of them? (Decades ago, we had a camper-trailer whose key was interchangeable with the Chevy's.)

  14. Graphic Gems books on Determining Color Difference Using the CIELAB Model? · · Score: 1

    The Graphics Gems series of books have multiple algorithms for color-space transformation and color-difference / closest color. HSV and HSL are both plausible candidates.

  15. Perl OO with Encapsulation, and other comments on What Makes a Powerful Programming Language? · · Score: 2, Informative
    Firstly, comparing the core standard of one language with the latest extensions of another is a very old troll, and older than the USENET; probably dates to the DARPA lists, if not before in the IEEE and ACM paper journals. (I was using this troll back when PL/I was cool.) Nothing, not even Perl or or it's blood-brother PL/I, can be all things to all people. I hope the list of needed features actually addresses the next project's needs, we can't judge that from here.

    Secondly, Perl OO is conforming with Perl's TIMTOWTDI (There Is More Than One Way To Do It) design goal. While native Perl OO is pretty casual in its encapsulation, if you want Bondage-And-Discipline OO, you can use one of Damian's Class::Classes, with Contract programming or Data hiding enforcement or ... there are at least 6 choices. At least one should have multiple inheritance grafted on, although I can't recommend actually using multiple inheritance of implementation (except maybe in CLOS); multiple inheritance of interface (like in Java or COM) seems safe enough.

    Likewise, anything else Perl is missing can be added via other modules -- many of which probably already exist, but can be custom crafted on demand. This includes Operator Overloading, which can be added, for whatever cases are required, using Inline::Filter -- using the full power of Perl as a macro-language for Perl, to enhance the syntax as desired. Not for the faint of heart, but a good Perl consultant can whip it up for you.

    GUI's -- Yes, it is true development of GUI's isn't built into Perl, unless you count the TCL modules as "built in". Ability to do GUIs does seem to run counter to portability (at compile time, whenever that is); this requirement may force your choice on Java. Perl has Gnome, TK/GTK, and Curses interfaces already. See CPAN

    Thirdly, Perl6 will likely be mostly functional before .NET this summer, and _will_ be all things to all people, thanks to the modular bolt-on accessories. (Operator overloading will apparently be a part of the PARROT runtime for Perl 6, as well as in Perl6.)

    Fourthly, Reality Context: Did The Boss specify that you had to be able to hire programmers in this language? Cheap or expensive? With lots of experience or not? Here or offshore? Eiffel's a great language, if you don't mind all your staff speaking French.

    Regarding the evils of Lisp ... see the story of Yahoo!Stores Paul Graham: Beating the Averages or /. #1539239 for a real world $ucce$$ story with Lisp and why; amusingly, he turned up just last week /. #1917202.

    -- Bill

    I had a sigfile ... back when sigfiles were cool
  16. Some more RAH and some near misses on Science Fiction into Science Fact? · · Score: 1
    You might get better answers in news:rec.arts.sf.*, it may even be in the FAQ.

    I'll focus on Robert A. Heinlein (RAH)

    1. Predicting classified research in process

      RAH was visited by Men from the Government during WWII due to the story he submitted (to Campbell?) on a super-weapon based on Fission. He had extrapolated from the same, pre-war unclassified, a priori first principles that had been used to persuade Einstein to write to Roosevelt -- but the Feds feared he had been informed by a leak from the Manhatan Project, he so clearly foresaw what they were building. Sorry, I don't recall the story.

    2. Partial but interestingly flawed Prediction.
      • RAH "The Roads Must Roll", included in The Past through Tommorrow and other collections. Airport & Mall-of-America's conveyer belt people-mover tech expected, as Interstate replacement for Autobahn tech.

      • RAH Star Line a/k/a Beyond This Horizon: Eugenic breeding; centrally planned economy ala FRB using computer economic models; origin of "An armed society is a polite society" quote? But Computers are mechano- electrical analogs, that require 3-D cams to specify 3rd order (degree?) equations; hero muses if only he could get 4-D cams he could use 4th order (?degree) equations in a refined, more accurate theoretical model ... but he supposes 4-D cams would require a 4-D lubricant too. At the same time that he read Manhattan Project's mind, he missed extrapolating the (also classified) developments in electronic computers at Whirlwind; his computers were much more like the Turing/Bletchley Bombes, mere extrapolates of IBM card machines -- correctly anticipating photostat output instead of impact printing.

      • RAH Starman Jones : Astrogation is via ephermises tables in huge books, much like old Greenwich navigation almanacs; Jones becomes a great astrogator because his eidetic memory allows him to remember the tables.

        Many other 1930's / 1940's stories have space-farers using the familiar Slide Rule to do their orbital calculations.

    3. INSPIRATIONAL / SEMINAL

      For seminal inspiration, Verne's Earth to the Moon is considered the first of its kind, although it was contemporaneous with speculation in debating societies of what was possible.

      RAH's book antecedent of the same name for the 1948ish Voyage to the Moon film (awarded the Retro-Hugo for Film at WorldCon 2001) was surely not the first to use magnetic boots, and maybe not even the first to use an oxygen cylinder as an emergency orbital maneuvering unit ... but updated the Verne and 1920's/1930's fantasy's to the immediate-post-war declassified rocket age's possibilities. Verner von Braun's team didn't need to be told it was possible (they had read the 1920's SciFi and were more interested in developing manned flight than in shelling Britain with their V2 rockets), but the new generation of American people who'd pay for the program had to be told that it was now possible, not just a wonder story.

    Thanks in part to the memories of my wonderful wife and librarian Pam and my old pal Mike. Mike Padlipski's earliest recorded work was his MIT Bachelor's Thesis entitle "More than Pulp: Science Fiction and the problem of Literary value", possibly the earliest academic thesis on Science Fiction as Literature (or SciFi as LitCrit). It "featured an extended 'close reading' of [Theodore Sturgeon]'s More than Human [and] shorter readings of another 4-5 s.f. pieces, and sundry scholarly stuffings." (We know of at most one earlier such thesis.) No, it's not on the Web (yet?). His witty technicoaesthetic criticism of internetworking protocols is in the RFCs on-line and in print in expanded form as The Elements of Networking Style. As always, the faults (and some of the cherished favorite memories) are mine. -- Bill

    I had witty .sigs when usenet was cool, or so I thought; no point now.
  17. Re:ITS -255c on Carbon Magnets At Room Temperature · · Score: 1

    The problem is not in your IE browser for once. Netscape is /wrong/ when it renders this page apparently (or content-semantically) correctly. It's that whoever (wrote the program that) translated the article to HTML didn't check the spec. The 0xAD character used in the page is NOT a MINUS, it's a "SHY"

    ref http://www.w3.org/TR/html40/sgml/entities.html