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The Cold Boundary - China/Russia
August 2008
As Moscow and Beijing promise a new era of friendship, intolerance and racist violence swells on the Russia/China border. Trade is bringing wealth to both countries. But will the price be paid in blood?
Length: 444
Rating: 4.80 (136 ratings)
Tags: china russia border importing exporting journeyman pictures
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beatmania IIDX - Hyper Boundary Gate
My favorite song and video from beatmania IIDX! Song is Goa/Psy Trance, movie is reminiscent of Sega's Rez video game. Music by Toshiyuki Kakuta (a.k.a. L.E.D. Light). Video by VJ Yasi.
Length: 121
Rating: 4.70 (27 ratings)
Tags: beatmania iidx bemani konami led goa psychedelic trance
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Boundary Waters Portage
A real-time, solo, single-trip, 20-rod portage on the Kawishi River in Minnesota's Boundary Waters
Length: 264
Rating: 4.50 (17 ratings)
Tags: boundary waters canoe portage
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Dolphin Boundary Layer
Explanation:
James Gray, an English Zoologist discovered that dolphins managed to attain speeds in the water that exceeded the power limit calculated for their muscles by a factor of seven. This paradox led researchers to investigate what phenomena accounted for this apparent discrepancy between hydrodynamic theory and physical observation.
While some have questioned Gray's calculations, others like Jim Rohr at the University of California in San Diego have sought answers to this paradox by studying the fluid dynamics. Using bioluminescent dinoflagellates as visual signals and enhanced video recording equipment, he was able to assess the boundary layer over the dolphins body surface at speeds of 2 m/s. These organisms give off light when the fluid layers around them are subject to stresses τwall≈0.1Nm−2. He then studied the enhanced recordings and proposed a solution to Gray's paradox. Research revealed that the dinoflagellates failed to light up in regions on the dolphin's body where the boundary layer is thinner. He concluded that their shape creates an optimal boundary layer for greater speeds with less energy.
Sources:
http://discovermagazine.com/2006/feb/physics-swimming
http://explorations.ucsd.edu/biolum/Page2.html
http://animals.about.com/cs/mammals/a/aa062102a.htm
http://animals.about.com/gi/dynamic/offsite.htm?zi=1/XJ&sdn=animals&cdn=education&tm=82&f=00&tt=2&bt=1&bts=1&zu=http%3A//jeb.biologists.org/cgi/reprint/201/9/1447.pdf
Movie sources:
http://explorations.ucsd.edu/biolum/movies/latz_talk_qt_high.html
http://explorations.ucsd.edu/biolum/movies/dolphin_anim_qt_high.html
http://explorations.ucsd.edu/biolum/movies/dolphins_night_qt_high.html
Length: 110
Rating: 5.00 (4 ratings)
Tags: dolphins
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Boundary Functions By Scott Snibbe
http://www.snibbeinteractive.com
http://snibbe.com/scott/bf/index.htm
by Scott Snibbe
Boundary Functions is realized as a set of lines projected from overhead onto the floor which divide each person in the gallery from one another. With one person in the gallery there is no response. When two are present, there is a single line drawn halfway between them segmenting the room into two regions. As each person moves, this line dynamically changes, maintaining an even distance between the two. With more than two people, the floor becomes divided into cellular regions, each with the mathematical quality that all space within the region is closer to the person inside than any other.
The regions which surround each person are mathematically referred to as Voronoi diagrams or Dirichlet tessellations. These diagrams are widely used in diverse fields, spontaneously occurring at all scales of nature. In anthropology and geography they are used to describe patterns of human settlement; in biology, the patterns of animal dominance and plant competition; in chemistry the packing of atoms into crystalline structures; in astronomy the influence of gravity on stars and star clusters; in marketing the strategic placement of chain stores; in robotics path planning; and in computer science the solution to closest-point and triangulation problems. The diagrams represent as strong a connection between mathematics and nature as the constants e or .
By projecting the diagram, these invisible relationships between individuals and the space between them are made visible and dynamic. The intangible notion of personal space and the line that always exists between you and another becomes concrete. The installation is non-functioning with one person, as a physical relation to others must be present. In this way the piece is a reversal of the often lonely self-reflection of virtual reality - here we are given a virtual space which can only exist with more than one person.
The documentation of Boundary Functions you see here is from Phaeno Wolfsburg, 2005.
Length: 94
Rating: 5.00 (3 ratings)
Tags: Interactive Art Computer Boundary Functions Scott Snibbe Snibbeinteractive Immersive Cinema Voroni Diagram Zaha Hadid
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