Skip to main content

Home/ Trawling The Net/ Group items tagged decision

Rss Feed Group items tagged

fishead ...*∞º˙

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

  •  
    "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

infographiclarge_v2.png (PNG Image, 2000×1440 pixels) - Scaled (67%) - 4 views

  •  
    all font roads lead to comic sans
Skeptical Debunker

Belief In Climate Change Hinges On Worldview : NPR - 0 views

  • "People tend to conform their factual beliefs to ones that are consistent with their cultural outlook, their world view," Braman says. The Cultural Cognition Project has conducted several experiments to back that up. Participants in these experiments are asked to describe their cultural beliefs. Some embrace new technology, authority and free enterprise. They are labeled the "individualistic" group. Others are suspicious of authority or of commerce and industry. Braman calls them "communitarians." In one experiment, Braman queried these subjects about something unfamiliar to them: nanotechnology — new research into tiny, molecule-sized objects that could lead to novel products. "These two groups start to polarize as soon as you start to describe some of the potential benefits and harms," Braman says. The individualists tended to like nanotechnology. The communitarians generally viewed it as dangerous. Both groups made their decisions based on the same information. "It doesn't matter whether you show them negative or positive information, they reject the information that is contrary to what they would like to believe, and they glom onto the positive information," Braman says.
  • "Basically the reason that people react in a close-minded way to information is that the implications of it threaten their values," says Dan Kahan, a law professor at Yale University and a member of The Cultural Cognition Project. Kahan says people test new information against their preexisting view of how the world should work. "If the implication, the outcome, can affirm your values, you think about it in a much more open-minded way," he says. And if the information doesn't, you tend to reject it. In another experiment, people read a United Nations study about the dangers of global warming. Then the researchers told the participants that the solution to global warming is to regulate industrial pollution. Many in the individualistic group then rejected the climate science. But when more nuclear power was offered as the solution, says Braman, "they said, you know, it turns out global warming is a serious problem."And for the communitarians, climate danger seemed less serious if the only solution was more nuclear power.
  • ...1 more annotation...
  • Then there's the "messenger" effect. In an experiment dealing with the dangers versus benefits of a vaccine, the scientific information came from several people. They ranged from a rumpled and bearded expert to a crisply business-like one. The participants tended to believe the message that came from the person they considered to be more like them. In relation to the climate change debate, this suggests that some people may not listen to those whom they view as hard-core environmentalists. "If you have people who are skeptical of the data on climate change," Braman says, "you can bet that Al Gore is not going to convince them at this point." So, should climate scientists hire, say, Newt Gingrich as their spokesman? Kahan says no. "The goal can't be to create a kind of psychological house of mirrors so that people end up seeing exactly what you want," he argues. "The goal has to be to create an environment that allows them to be open-minded."And Kahan says you can't do that just by publishing more scientific data.
  •  
    "It's a hoax," said coal company CEO Don Blankenship, "because clearly anyone that says that they know what the temperature of the Earth is going to be in 2020 or 2030 needs to be put in an asylum because they don't." On the other side of the debate was environmentalist Robert Kennedy, Jr. "Ninety-eight percent of the research climatologists in the world say that global warming is real, that its impacts are going to be catastrophic," he argued. "There are 2 percent who disagree with that. I have a choice of believing the 98 percent or the 2 percent." To social scientist and lawyer Don Braman, it's not surprising that two people can disagree so strongly over science. Braman is on the faculty at George Washington University and part of The Cultural Cognition Project, a group of scholars who study how cultural values shape public perceptions and policy
Skeptical Debunker

Gemfields discovers 6,225-carat 'elephant' emerald in Zambia - Telegraph - 0 views

  • Gemfields said its experts "will continue to evaluate the gem before any final decision is taken in terms of its future". Ian Harebottle, chief executive of Gemfields, said: "This is a unique find. The Insofu displays wonderful colour and good translucency. Its sheer size, rich colour and fine protective biotite shell make it difficult to see deep into the gem. However, all indications suggest that the core of the emerald is competent and that it should yield a number of cut gems of significant size." The largest uncut emerald believed to have been found was in Carnaiba, Brazil in 1974. It was an incredible 86,136-carat natural beryl crystal. The stone was eventually valued at $1,120,080. The largest emerald crystal ever discovered was 7,025 carats and was found in a mine in Colombia.
  •  
    The emerald was recovered during normal mining operations on February 5, the company said in a statement, and is being examined by Gemfields' experts to establish a clearer understanding of its value and significance. The emerald has been named "Insofu" (which means "elephant" in the language of the Bemba people indigenous to the region) due to its size and in honour of the World Land Trust's "Wild Lands Elephant Corridor Project", of which Gemfields is a participant.
Skeptical Debunker

'Clash' of 3-D movies to hit underprepared cinemas - 0 views

  • The pileup was created in part because studios want to capture some of the excitement surrounding "Avatar," the James Cameron epic released in December. At $2.4 billion in global ticket sales, it is the highest-grossing film ever. In addition to the novelty or richer experience that might drive more people to see a 3-D movie, tickets to 3-D movies also cost a few dollars more. Around the time "Avatar" came out, Warner Bros. decided to convert a remake of "Clash of the Titans" from 2-D to 3-D and push its release back a week, to April 2. That will be the third 3-D movie to hit the market in a short span. DreamWorks Animation SKG Inc.'s "How to Train Your Dragon" comes out a week earlier, and The Walt Disney Co.'s "Alice in Wonderland" hits theaters March 5. And "Avatar" might still be playing in some places too. But a limited number of theaters can show these movies in 3-D, because not all theater owners have bought new digital projectors and undertaken other upgrades necessary to show movies in the format. About 3,900 to 4,000 3-D-ready screens are expected to be available in the U.S. and Canada by the end of March. Typically a movie in wide release might be shown on 3,000 to 10,000 screens in North America. In the past, a smaller number of 3-D-capable screens was adequate when one major film at a time was being released in 3-D in addition to 2-D. Each movie had a longer run, and moviegoers who wanted to see it in 3-D could pick a convenient time to go. With three out at once, each will get less exposure because some theaters with only one or two 3-D screens will have to choose which movies to show in 3-D. "One or all three are going to suffer in some way," said Patrick Corcoran, director of media and research for the National Association of Theatre Owners. "It makes it a much harder decision on exhibitors on what to keep or what to drop or what to add and probably should have been avoided."
  •  
    Movies in 3-D are becoming such big moneymakers that Hollywood studios are cramming them into the nation's theaters, even though there aren't enough screens available to give each film its fullest possible run. That will mean an unprecedented number of 3-D movies for film fans to choose from this spring, and smaller profits for Hollywood studios than they might otherwise get with fewer 3-D competitors.
1 - 5 of 5
Showing 20 items per page