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fishead ...*∞º˙

Clever folds in a globe give new perspectives on Earth - tech - 10 December 2009 - New ... - 0 views

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    "Video: A new way to unfold the Earth's surface produces a new kind of map A new technique for unpeeling the Earth's skin and displaying it on a flat surface provides a fresh perspective on geography, making it possible to create maps that string out the continents for easy comparison, or lump together the world's oceans into one huge mass of water surrounded by coastlines. See a gallery of the new maps "Myriahedral projection" was developed by Jack van Wijk, a computer scientist at the Eindhoven University of Technology in the Netherlands. "The basic idea is surprisingly simple," says van Wijk. His algorithms divide the globe's surface into small polygons that are unfolded into a flat map, just as a cube can be unfolded into six squares. Cartographers have tried this trick before; van Wijk's innovation is to up the number of polygons from just a few to thousands. He has coined the word "myriahedral" to describe it, a combination of "myriad" with "polyhedron", the name for polygonal 3D shapes. Warping reality The mathematical impossibility of flattening the surface of a sphere has long troubled mapmakers. "Consider peeling an orange and trying to flatten it out," says van Wijk. "The surface has to distort or crack." Some solutions distort the size of the continents while roughly preserving their shape - the familiar Mercator projection, for instance, makes Europe and North America disproportionately large compared with Africa. Others, like the Peters projection, keep landmasses at the correct relative sizes, at the expense of warping their shapes. An ideal map would combine the best properties of both, but that is only possible by inserting gaps into the Earth's surface, resulting in a map with confusing interruptions. Van Wijk's method makes it possible to direct those cuts in a way that minimises such confusion. Maps of significance When generating a map he assigns a "weighting" to each edge on the polyhedron to signal its importance, influencing the pl
Kurt Laitner

IEEE Spectrum: A Fly-Eye Inspired Speed Sensor - 0 views

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    Very good for my democratic speed limit project
fishead ...*∞º˙

TYWKIWDBI: Here's some sand to play with... - 0 views

  • Click on this link.  Directions are in the small box in the UL corner.  Several thousand user-submitted results are stored in the gallery (where the most recent submission is entitled TYWKIWDBI...)
fishead ...*∞º˙

Evri Ties the Knot with Twine - Twine CEO Comments and Analysis « Nova Spivac... - 0 views

  • Evri Ties the Knot with Twine — Twine CEO Comments and Analysis March 11th, 2010  Share Today I am pleased to announce that my company, Radar Networks, and its flagship product, Twine, have been acquired by Evri. TechCrunch broke the story here. This acquisition consolidates the two leading providers of semantic discovery and search. It is also the culmination of my long and challenging venture to pioneer the adoption of the consumer Semantic Web.
  • The Twine team is joining Evri to continue our work there. Twine.com’s data and users are safe and sound and will be transitioned into the Evri.com service over time. This process will be done in a manner that protects privacy and data, and is minimally disruptive. I have great faith in the team at Evri and believe they will handle this with great care and respect for the Twine community.
  • Twine was well-received by the press and early-adopter users.
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  • At the time of beta launch and for almost six months after, Twine was still very much a work in progress. Fortunately our users and the press were fairly forgiving as we worked through evolving the GUI and feature set from what was initially just slightly better than an alpha site to the highly refined and graphical UI we have today. During these early days of Twine.com we were fortunate to have a devoted user-base and this became a thriving community of power-users who really helped us to refine the product and develop great content within it.
  • These losses meant we could no longer create compelling content or to manage the Twine community. So we put Twine.com on auto-pilot and let the traffic fall off. While painful to watch, this at least had the benefit of reducing the pressure to scale the system and support it under load, giving us time to focus all our energy on getting T2 finished and raising more funds.
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    no direct mentions, but at least some recongition
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