scientific american - 1997 08 - age and energy

... between ATAMS and convention- al systems is that it will be updated ev- News and Analysis Scientific American August 1997 33 TECHNOLOGY AND BUSINESS COMMAND AND CONTROL Inside a hollowed-out mountain, ... Inc. THANE Earth Scenes Copyright 1997 Scientific American, Inc. News and Analysis22 Scientific American August 1997 H ey, maybe we can go to a Mets game,” intone...

Ngày tải lên: 12/05/2014, 15:29

... theorists, Nobel laure- ate Tsung Dao Lee and the late Gian-Car- lo Wick, raised the possibility that con- ditions of extreme energy and density could create a new phase of dense and stable nuclear ... core. Other candidates include the liquid metalÐcooled fast-neutron reactor and the high-temperature gas-cooled reac- tor; advanced versions of these con- cepts are under development...

Ngày tải lên: 12/05/2014, 14:50

... priority mission was to engage Soviet nuclear-powered subma- rines in a global game of hide -and- seek. As that threat has faded, conßicting pri- orities have emerged. On one hand, the U.S. Navy is ... of modern sub- marines and munitions have led to real and serious proliferation risks. Subma- rine-producing countries need to look beyond short-term commercial inter- ests to long-term sec...

Ngày tải lên: 12/05/2014, 14:57

... Òinductivist, ameliorative, progressive, add-a-fact-at- a-time-donÕt-theorize-till-youÕre-old mod- el of doing science.Ó When I ask Gould if he believes, as Kuhn does, that science does not ad- vance toward truth, ... sometimes cheap and sometimes expensive. E-mailers have grown used to typing for a ßat rate. Somewhere between the ßat-rate pric- ing structure of the Internet and the us-...

Ngày tải lên: 12/05/2014, 15:01

... progresses News and Analysis24 Scientific American August 1996 Name That Bug To identify annoying garden pests, northern Californians can now call 1- 90 0-2 25-BUGS between 10 A.M. and 4 P.M. Set up and staffed ... company plans to add voice-mail messages that will also arrive as MIME-encoded e-mail at- tachments, neatly providing a unified service for fax, voice and e-mail...

Ngày tải lên: 12/05/2014, 15:14

... & L SINIBALDI Tony Stone Images Copyright 1996 Scientific American, Inc.Copyright 1996 Scientific American, Inc. News and Analysis Scientific American January 1997 31 surface. Initially this ... PALSY” F o r e ! T r i c k s o f t u r b u l e n c e s t i l l d e f y s u p e r c o m p u t e r s Copyright 1996 Scientific American, Inc. mother bought him an Apple II com- pute...

Ngày tải lên: 12/05/2014, 15:20

... Horgan PRIZE MISTAKE The n-body problem is solved—too late MATHEMATICS LAUROS-GIRAUDON/ART RESOURCE Copyright 1997 Scientific American, Inc. News and Analysis Scientific American February 1997 23 A keystone ... Boeing 609 will actu- ally be an updated version of the exper- imental, 1970s-era XV-15, which was a test-bed for a military tilt-rotor known as the V-22 Osprey. The V-22...

Ngày tải lên: 12/05/2014, 15:20

... Schneider News and Analysis22 Scientific American March 1997 Copyright 1997 Scientific American, Inc. News and Analysis24 Scientific American March 1997 T he first time that paleontolo- gist Olivier ... Liaison JERRY ALEXANDER Tony Stone Images Copyright 1997 Scientific American, Inc. contaminants, but the fine-grained sed- iments that accumulate on the bottom of the s...

Ngày tải lên: 12/05/2014, 15:21

... Powell News and Analysis Scientific American April 1997 29 Copyright 1997 Scientific American, Inc. I t has been said that “Internet secu- rity” is an oxymoron. Privacy, ac- countability and restricted ... low-impact logging and sus- tainable, high-impact logging, environ- Can Sustainable Management Save Tropical Forests?46 Scientific American April 1997 BRAZIL BOLIVIA...

Ngày tải lên: 12/05/2014, 15:23

... complica- tions and respi- ratory symp- toms. Neurologi- cal, psychiatric and ophthalmic diseases were also most preva- lent among the most heavily ex- posed. In an ac- companying pa- per, the ... 40 subjects, McDer- mott found that on average each volun- teer correctly recalled fewer than 40 News and Analysis24 Scientific American May 1997 In Brief, continued from page 18 Leaping...

Ngày tải lên: 12/05/2014, 15:23