what is the unusual source of highenergy cosmic rays that has been discovered within 3000 light years of the sun everyone loves a mystery and this one has all the earmarks of a classic. the source was found by the advanced thin ionization calorimeter atic experiment which was lofted to high altitude above antarctica via heliumfilled balloon. behind the experiment was the goal of s...... [Show More]
a dyson sphere makes an extraordinary setting for science fiction. in fact my first knowledge of the concept came from reading larry nivens 1970 novel ringworld a book that left such an impression that i still recall reading half of it at a sitting in the drafty little parlor of a house i was renting in grinnell iowa. ringworld had just come out as a ballantine paperback with the lovely ...... [Show More]
nuevas fronteras para el futuro de la navegabilidad en internet .
cualquier persona del planeta esta conectada con otra mediante una cadena de conocidos que no tiene mas de seis niveles de separacian por tarmino medio. esta idea la famosa teoraa de los seis grados de separacian es uno de los paradigmas en que se basa un estudio sobre conexiones y navegabilidad en redes complejas public...... [Show More]
some links to items of interest action bias among elite soccer goalkeepers the case of penalty kicks repec will beer be the next casualty of the crisis usnwr hedge fund managers are the heroes of this crisis the daily beast face to face with john paulson p i the twin curves of oil and treasuries gregor 41...... [Show More]
links for 20081118 Post Source: www.mingli-yuan.info Posted: Nov 18 2008 17:09:43
clustering tags in enterprise and web folksonomies
tags folksonomy
learning has just started an interview with prof. vladimir vapnik
as a part of the renovation of the learningtheory.org web site we are launching a series of interviews with leading researchers in learning theory and related fields. we are proud that prof. vladimir vapnik accepted our invitati...... [Show More]
panic can be good Post Source: blogs.uslhc.us Posted: Nov 18 2008 16:22:54
especially when panic is panic 2008 particles and nuclei in collision which was held in eilat israel this year.a i had the honor of giving a plenary talk on the role of soft physics both for helping understand the physics at rhic and how the lhc will contribute to our evolving understanding.
ive written about soft physics before both as day 18...... [Show More]
finds none. in irasbased wholesky upper limit on dyson spheres richard a. carrigan jr tells how he searched for dyson spheres in the iras infrared satellite database. the sensitivity ... was enough to find solarsized dyson spheres out to 300 pc a reach that encompasses a million solar type stars .
the evidence mounts that technology is scarce....... [Show More]
the new james bond film quantum of solace just opened in the us. awhat intrigues me about the film is its title which seems to use qua ntum8221 in something like its technical sense of the smallest amount of a physical quantity that can exist independently especially a discrete quantity of electromagnetic radiation. american heritage dictionary. ai take ...... [Show More]
here are links to two prestigious journals.
the journal of unpublished results
the journal of weirdass shit
here is a link to a paper accepted in jwas.
...... [Show More]
about the exoplanet imaging stories from yesterday i wrote that i suspect that there has been some disagreements on the team about how to present this and they are fighting over being bold and possibly wrong or being conservative with a still great result and no risk of a mistake.
my old friend bruce macintosh one of the team members wrote me to explain what was going on betwe...... [Show More]
...the track. the experiment i am attempting to recreate is shown here at 352 httpwww .youtube.c omwatchv 1zwbobbhr 4i
the project even comes with very specific instructions shown here httparx iv.orgps cachearxi vpdf...8 03.3090v1. pdf
the instructions specify that a 3 cm hexagonal enhanced flux pinning ybco superconductor was used. my problem is the store in which they purchased t... [Show More]
an illustration of fomalhaut b orbiting its sun fomalhaut credit esa nasa and l. calcada eso for stsci while all of us who are rooting for the existence of little green men have been cheered by each discovery of a planet orbiting a star other than our sunan exoplanet of which there were 322 when i checked the catalog a minute agotheres always been a tinge of dis...... [Show More]
the lasso is a popular algorithm for selection used in statistics. in this recent paper posted to arxiv the authors show that the lasso is not algorithmically stable. its only to be expected really. a twirling loop of rope is hardly an image one might associate to stability
posted in arxiv statistics...... [Show More]
...he track. the experiment i am attempting to recreate is shown here at 352 httpwww .youtube.c omwatchv 1zwbobbhr 4i
the project even comes with very specific instructions shown here httparx iv.orgps cachearxi vpdf...8 03.3090v1. pdf
the instructions specify that a 3 cm hexagonal enhanced flux pinning ybco superconductor was used. my problem is the store in which they purchas... [Show More]
want to get to the outer solar system quickly try this on for size two and a half years to reach the heliopause six and a half years to get to the suns inner gravitational focus 550 au with arrival at the inner oort cloud in no more than thirty years. a spacecraft meeting those targets is moving at 403 kilometers per second roughly twenty times as fast as anything weve...... [Show More]
more good news for the zoo arrived this week. as bill prepares for our next observing run on top on kitt peak in arizona we received an email that weve been awarded time on the giant 30m radio dish of the iram observatory above granada for not one but two zoo projects.a athe first is the beginning of our campaign to make use of the beautiful catalogue of merging galaxies the zoo pro...... [Show More]
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