Adam Norwood

Tag: technology

  • The Bandwidth of Foraging Ants
    Visit the source: news.stanford.edu

    In other insect news, a case of life imitating (well, at least acting similar to) network transmission protocols:

    This feedback loop allows TCP to run congestion avoidance: If acks return at a slower rate than the data was sent out, that indicates that there is little bandwidth available, and the source throttles data transmission down accordingly. If acks return quickly, the source boosts its transmission speed. The process determines how much bandwidth is available and throttles data transmission accordingly.

    It turns out that harvester ants (Pogonomyrmex barbatus) behave nearly the same way when searching for food. … A forager won’t return to the nest until it finds food. If seeds are plentiful, foragers return faster, and more ants leave the nest to forage. If, however, ants begin returning empty handed, the search is slowed, and perhaps called off.

    (Via ACM TechNews)

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  • First Computer Graphics Film at T Satellite

    Now that I have a retina display, I want a screensaver that looks as good as this 1963 AT&T microfilm video:

    This film was a specific project to define how a particular type of satellite would move through space. Edward E. Zajac made, and narrated, the film, which is considered to be possibly the very first computer graphics film ever. Zajac programmed the calculations in FORTRAN, then used a program written by Zajac’s colleague, Frank Sinden, called ORBIT. The original computations were fed into the computer via punch cards, then the output was printed onto microfilm using the General Dynamics Electronics Stromberg-Carlson 4020 microfilm recorder. All computer processing was done on an IBM 7090 or 7094 series computer.

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  • Kyle Mcdonald on Getting a Little Lost

    I’ve learned you have to be careful when you get lost in an idea. As an artist, you have to get a little lost. Otherwise you won’t discover anything interesting. But you have to avoid getting so lost that you’re unable to walk away and keep exploring. Media artist Kyle McDonald writes about the aftermath of his People Staring at Computers Apple Store project that drew attention last summer after he was investigated by the Secret Service.
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  • Internet Protocol over Xylophone Players

    Somehow I missed a lecture and demo of this new networking technology in Austin back in May: Internet Protocol Over Xylophone Players (IPoXP) (PDF whitepaper), which puts a human element in the middle of sending IP packets from one computer to another. From Wired UK:

    As an LED lights up, the human participant strikes the corresponding key on the xylophone. Piezo sensors are attached to each xylophone, so that they are able to sense when a note is played on the other xylophone. The Arduino for the receiving computer senses the note and then converts it back into hexadecimal code. And when the second computer sends a return packet, the order of operations is reversed.

    The data can be sent at a rate of roughly 1 baud, which is still faster than the earlier, um, IP over Avian Carriers technology.

    Assuming the musicians don’t get bored. It takes about 15 minutes to transmit a single packet, assuming the musician doesn’t hit any wrong notes. That’s rare, though, apparently. Geiger told NetworkWorld: “Humans are really terrible interfaces.”

    Pedant note: yes, they are using a glockenspiel in the photo above, not a true xylophone, but I guess X is a cooler letter to have in your acronym…

    (Via ACM Tech News)

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  • Slime moulds work on computer games
    Visit the source: www.alphagalileo.org

    Hey, that’s not a very nice thing to call game developers! Oh, you mean literal slime molds…

    British computer scientists are taking inspiration from slime to help them find ways to calculate the shape of a polygon linking points on a surface. Such calculations are fundamental to creating realistic computer graphics for gaming and animated movies. The quicker the calculations can be done, the smoother and more realistic the graphics. …

    Adamatzky explains that the slime mould Physarum polycephalum has a complicated lifecycle with fruit bodies, spores, and single-cell amoebae, but in its vegetative, plasmodium, stage it is essentially a single cell containing many cell nuclei. The plasmodium can forage for nutrients and extends tube-like appendages to explore its surroundings and absorb food. As is often the case in natural systems, the network of tubes has evolved to be able to quickly and efficiently absorb nutrients while at the same time using minimal resources to do so.

    The Internet will some day be a series of (feeding) tubes?

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  • Bell Labs Hamlet from 1885

    Seen above is a green disc, wax on brass, with an early recording of Hamlet’s “To be or not to be…” soliloquy, that likely hasn’t been heard in over 125 years. Created by Alexander Graham Bell’s Volta Laboratory in the late 19th Century and sent to the Smithsonian for archiving as they were created, the paranoid Bell failed to provide a playback mechanism for these discs, for fear that his competitors would appropriate his innovations.

    Researchers at the Lawrence Berkeley National Laboratories are working on recovering these early audio recordings with a system called IRENE/3D that creates 3D optical scans of the old record-like discs:

    Using methods derived from our work on instrumentation for particle physics we have investigated the problem of audio reconstruction from mechanical recordings.  The idea was to acquire digital maps of the surface of the media, without contact, and then apply image analysis methods to recover the audio data and reduce noise.

    The nifty thing about this form of hands-off scanning is that it can accommodate many types of otherwise mechanically incompatible media, from discs made of metal or glass to wax cylinders (quick, someone set this up to scan the Lazarus bowl!!). The 18-second snippet of Hamlet audio from the green disc above (maybe the voice of Bell himself?) has been posted on YouTube, or you can download more examples from the project in WAV and MP3 format.

    (Via PhysOrg)

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  • Marconi, Hacked in 1903

    Want to expose a rival’s poor security implementation? What better way than to demonstrate the weakness in public, in front of a gathered crowd? From a New Scientist story of very early 20th-Century hacktivism:

    LATE one June afternoon in 1903 a hush fell across an expectant audience in the Royal Institution’s celebrated lecture theatre in London. Before the crowd, the physicist John Ambrose Fleming was adjusting arcane apparatus as he prepared to demonstrate an emerging technological wonder: a long-range wireless communication system developed by his boss, the Italian radio pioneer Guglielmo Marconi. The aim was to showcase publicly for the first time that Morse code messages could be sent wirelessly over long distances. Around 300 miles away, Marconi was preparing to send a signal to London from a clifftop station in Poldhu, Cornwall, UK.

    Yet before the demonstration could begin, the apparatus in the lecture theatre began to tap out a message. … Mentally decoding the missive, Blok [Fleming’s assistant] realised it was spelling one facetious word, over and over: “Rats”. A glance at the output of the nearby Morse printer confirmed this. The incoming Morse then got more personal, mocking Marconi: “There was a young fellow of Italy, who diddled the public quite prettily,” it trilled.

    The radio-hacker was Nevil Maskelyne, a magician and rival inventor who was interested in developing wireless technology but who had been frustrated by the broad patents granted to Marconi. Bonus trivia: Nevil’s father was John Nevil Maskelyne, magician and inventor of the pay toilet, and his son was Jasper Maskelyne, a magician and inventor (see a family connection here?) who allegedly helped develop some of the famous optical diversions and camouflage trickery for the British military during WWII (his inflatable tanks remind me of the Potemkin Army thing I posted a couple of years back…)

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  • Banaphone Invoked Computing

    Banana Phone And Pizza Box Laptop PC – Invoked Computing For Ubiquitous AR

    Usually “augmented reality” involves using a camera device to view an overlay of information or digital control on top of a video screen of some kind (say an iPhone or webcam/desktop), but this is kind of the opposite: having a camera+projector system that can map your intents onto everyday objects around the house for “invoked computing”.

    Mostly I share this because I like this bananaphone demo:

    There is a banana scenario where the person takes a banana out of a fruit bowl and brings it closer to his ear. A high speed camera tracks the banana; a parametric speaker array directs the sound in a narrow beam. The person talks into the banana as if it were a conventional phone.

    (Via PhysOrg via ACM TechNews)

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  • Rip Steve Jobs

    I remember when Wired ran their May, 1997 issue, focusing on the downfall and imminent demise of Apple with this striking (and to some, controversial) cover. Most of their “101 Ways to Save Apple” suggestions are in hindsight nonsensical (merge with Sega to make games!), a few were prescient (build a ~$250 PDA phone that can do email!), but one definitely stands out as the prize winner:

    50. Give Steve Jobs as much authority as he wants in new product development. … Even if Jobs fails, he’ll do it with guns a-blazin’.

    He definitely didn’t fail, by anybody’s standards. It’s hard to think of many individuals out there who have had a bigger impact on popular computing and technology, not to mention who have led the charge for design and innovation as still-relevant business ideals in the 21st Century. RIP Steve Jobs.

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  • The visibilizing analyzer
    Visit the source: languagelog.ldc.upenn.edu

    The Language Log on how science fiction often misses the mark with predictions of technology (the why is up for debate, of course):

    Less than 50 years ago, this is what the future of data visualization looked like — H. Beam Piper, “Naudsonce”, Analog 1962:

    She had been using a visibilizing analyzer; in it, a sound was broken by a set of filters into frequency-groups, translated into light from dull red to violet paling into pure white. It photographed the light-pattern on high-speed film, automatically developed it, and then made a print-copy and projected the film in slow motion on a screen. When she pressed a button, a recorded voice said, “Fwoonk.” An instant later, a pattern of vertical lines in various colors and lengths was projected on the screen.

    This is in a future world with anti-gravity and faster-than-light travel.

    The comments that follow are a great mix of discussion about science fiction writing (why do the galactic scientists in Asimov’s Foundation rely on slide rules?) and 1960s display technology limitations (vector vs. raster, who will win?). I like this site.

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