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roley susan lynn c 1947— american special agent

Why (Special Agent) Johnny (Still) Can’t Encrypt: A Security Analysis of the APCO Project 25 Two-Way Radio System docx

Why (Special Agent) Johnny (Still) Can’t Encrypt: A Security Analysis of the APCO Project 25 Two-Way Radio System docx

Tổ chức sự kiện

... Block Chaining) cannot be used for voice encryption; block ciphers require the accurate reception of an entire block in order for any portion of the block to be correctly decrypted P25 voice encryption ... 2010 ACM [11] Icom Icom PCR2500 Communications Receiver http://www.icomamerica.com/en/ products/pcr2500 [12] H T Kung and D Vlah Efficient location tracking using sensor networks In Wireless Communications ... cryptographic protocols, such as those based on block ciphers and MACs This ad hoc design might by itself represent a security concern In fact, the design introduces significant certificational weaknesses...
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scientific american  special edition  -  1997 vol08 no1  -  mysteries of mind

scientific american special edition - 1997 vol08 no1 - mysteries of mind

Toán học

... collaboration among psychologists, neuroscientists and theorists by Francis Crick and Christof Koch 18 Mysteries of the Mind Copyright 1997 Scientific American, Inc The Authors ©1997 C HERSCOVICI, BRUSSELS; ... 1997 Scientific American, Inc ALTERED GENETIC ACTIVITY in immune cells is an effect of cortisol The cortisol receptors in immune cells are folded and bound to large “heat-shock” proteins When cortisol ... registry of conscience, and the council chamber of thought —St Basil Established 1845 Scientific American Mysteries of the Mind is published by the staff of Scientific American, with project management...
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scientific american  special edition  -  1997 vol08 no2  -  solid - state century

scientific american special edition - 1997 vol08 no2 - solid - state century

Toán học

... Transistor Scientific American: The Solid-State Century Copyright 1997 Scientific American, Inc 19 20 Scientific American: The Solid-State Century Copyright 1997 Scientific American, Inc The Transistor ... Scientific American: The Solid-State Century Copyright 1997 Scientific American, Inc 15 BELL LABS, LUCENT TECHNOLOGIES This article, which appeared in the September 1948 issue of Scienti c American, ... Semiconductor specialists could use it to check the cleanliness of a processing line, in which even a few stray molecules can render a chip useless Law-enforcement and security officials could check...
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scientific american  special edition  -  1998 vol 09 no1  -  magnificent cosmos

scientific american special edition - 1998 vol 09 no1 - magnificent cosmos

Toán học

... 1995, the Hubble Space Telescope discovered a belt of perhaps 200 million comets encircling the solar system 46 Scientific American Presents Copyright 1998 Scientific American, Inc EXTREMELY LARGE ... MIMAS CENTER OF HERSCHEL CRATER ITHACA CHASMA Copyright 1998 Scientific American, Inc S aturn’s rings make it one of the most familiar, and spectacular, images of astronomy, not to mention science ... revealed by the Doppler Copyright 1998 Scientific American, Inc Magnificent Cosmos 11 closer: it causes the sun to move a mere nine centimeters a second Yet some uncertainty about each extrasolar planet’s...
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scientific american  special edition  -  1998 vol 09 no2  -  womens health

scientific american special edition - 1998 vol 09 no2 - womens health

Toán học

... of many ocSA casions when child—not parent—decides life’s pace Focus on Pregnancy Scientific American Presents Copyright 1998 Scientific American, Inc P Today there are better choices for pain ... infertility, ectopic pregnancy, chronic pelvic pain Antibiotics available; no vaccine Gonorrhea 25–75 Pelvic inflammatory disease, infertility, ectopic pregnancy, chronic pelvic pain Antibiotics available ... 1998 Scientific American, Inc Chemical barriers Chemical barriers, such as spermicides, not block the exchange of bodily fluids at all—but actively kill the viruses and bacteria that can cause...
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scientific american  special edition  -  1998 vol 09 no3  -  the oceans

scientific american special edition - 1998 vol 09 no3 - the oceans

Toán học

... Spot Anta rcti cC ircu mp ola rC urr en t COPYRIGHT 1998 SCIENTIFIC AMERICAN, INC The Oceans 13 Polar Oceans T he ice-covered Arctic was first recognized to be a deep basin only a century ago, ... giant oceanic conveyor, which carries heat from the tropics northward on the surface and returns colder water at great depth Scientific American Presents COPYRIGHT 1998 SCIENTIFIC AMERICAN, INC Atlantic ... of Water on Earth Scientific American Presents Copyright 1998 Scientific American, Inc TOM MOORE GLOBAL O a PA C I F I C O C E A N : Bikini’s Nuclear Ghosts 24 Scientific American Presents Ailinginae...
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scientific american  special edition  -  1998 vol 09 no4  -  exploring intelligence

scientific american special edition - 1998 vol 09 no4 - exploring intelligence

Toán học

... scienti c perspective [see “The Puzzle of Conscious Experience,” by David J Chalmers; SCIENTIFIC AMERICAN, December 1995; and “The Problem of Consciousness,” by Francis Crick and Christof Koch; ... Intelligence Scientific American Presents Copyright 1998 Scientific American, Inc The Dream, by Henri Rousseau Reasoning in Animals Exploring Intelligence Copyright 1998 Scientific American, Inc 53 ... schematic Human Intelligence Scientific American Presents Copyright 1998 Scientific American, Inc COURTESY OF ELLEN WINNER © 1977 HARCOURT BRACE AND COMPANY DRAWING SAVANT NADIA was a “lowfunctioning”...
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scientific american  special edition  -  1999 vol 10 no1  -  the future of space exploration

scientific american special edition - 1999 vol 10 no1 - the future of space exploration

Toán học

... around Mars 40 Scientific American Presents Copyright 1999 Scientific American, Inc Copyright 1999 Scientific American, Inc The Future of Space Exploration 41 the NASA Johnson Space Center and Stanford ... Exploring Mars Scientific American Presents Copyright 1999 Scientific American, Inc JOHNNY JOHNSON W Lucid; SCIENTIFIC AMERICAN, May 1998] Because she actually implemented the rigorous exercise program ... spectrometer Alpha-particle spectrometer Initial lunar orbit Copyright 1999 Scientific American, Inc LAURIE GRACE Lunar Prospector Lunar Prospector Trajectory Launch Date: January 6, 1998 Cost:...
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scientific american  special edition  -  1999 vol 10 no2  -  men

scientific american special edition - 1999 vol 10 no2 - men

Toán học

... to Masculinity Copyright 1999 Scientific American, Inc 25 JOHN COLETTI Stock Boston I DEFINING MEN S by Doreen Kimura ex Differences Copyright 1999 Scientific American, Inc 26 Brain SPENCER GRANT ... opposite page) Covering the myofibrils is a sarcoplasmic reticulum; the calcium it contains plays a role in triggering muscle contraction 50 SCIENTIFIC AMERICAN PRESENTS The Mystery of Muscle Copyright ... The ratchetlike cycle can happen five times a second in a rapidly contracting muscle As the cycles occur, various reactions convert the ADP back to ATP to keep fueling the contraction Three Kinds...
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scientific american  special edition  -  1999 vol 10 no3  -  your bionic future

scientific american special edition - 1999 vol 10 no3 - your bionic future

Toán học

... while colonies form COLONY OF PANCREAS ISLETS COLONY OF EMBRYONIC STEM CELLS 20 LAURIE GRACE COLONY OF CARTILAGE CELLS YOUR NEW BODY SCIENTIFIC AMERICAN PRESENTS Copyright 1999 Scientific American, ... BODY SCIENTIFIC AMERICAN PRESENTS Copyright 1999 Scientific American, Inc YOUR NEW BODY MUSCULAR AGAIN Within a decade or two, scientists will create a genetic vaccine that increases muscle mass— ... INTRODUCTION SCIENTIFIC AMERICAN PRESENTS Copyright 1999 Scientific American, Inc INTRODUCTION The merging of biology and microelectronics is at the heart of most of the coming advances ramifications...
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scientific american  special edition  -  1999 vol 10 no4  -  extreme engineering

scientific american special edition - 1999 vol 10 no4 - extreme engineering

Toán học

... 17 SCIENTIFIC AMERICAN PRESENTS Copyright 1999 Scientific American, Inc TOWER CRANES SPILLWAY DIVERTED YANGTZE LEFT TRAINING WALL THE BIG, THE SMALL Copyright 1999 Scientific American, Inc CONVEYOR ... electrons in the system 24 Copyright 1999 Scientific American, Inc by Sasha Nemecek COURTESY OF DONALD M EIGLER IBM Almaden Research Center Required 25 Copyright 1999 Scientific American, Inc ... a Chinese water clock, by Su Sung); A McPHAIL Tony Stone Images (fence); CORBIS (vaccine; refrigerator); CULVER PICTURES (bridge; Crystal Palace); CORBIS/BETTMANN (loom); CORBIS/HISTORICAL PICTURE...
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scientific american  special edition  -  2000 vol 11 no1  -  weather

scientific american special edition - 2000 vol 11 no1 - weather

Toán học

... picnic to get the first inkling of what the weather would be like This came from NCEP’s Climate Prediction Forecasting Is No Picnic Copyright 2000 Scientific American, Inc Center, which is in charge ... that atmospheric conditions are chaotic and that their predictions may be uncertain Scientific American Presents The Butterfly That Roared Copyright 2000 Scientific American, Inc consists of real ... that they may cause localized disturbances in the chemical and electrical properties Scientific American Presents Big Sky, Hot Nights, Red Sprites Copyright 2000 Scientific American, Inc ...
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scientific american  special edition  -  2000 vol 11 no2  -  the quest to beat aging

scientific american special edition - 2000 vol 11 no2 - the quest to beat aging

Toán học

... AGING SCIENTIFIC AMERICAN PRESENTS 15 Copyright 2000 Scientific American, Inc getting ever older ROBERT RICCI Liaison Agency de THE QUEST TO BEAT AGING 18 SCIENTIFIC AMERICAN PRESENTS Copyright ... SCIENTIFIC AMERICAN PRESENTS 13 Copyright 2000 Scientific American, Inc DUSAN PETRICIC I Bristlecone pine world’s oldest creatures GALEN ROWELL Peter Arnold, Inc (bristlecone pine); GERALD LACZ ... AGING SCIENTIFIC AMERICAN PRESENTS Copyright 2000 Scientific American, Inc getting FRED PROUSER Reuters/Archive Photos ever older THE QUEST TO BEAT AGING SCIENTIFIC AMERICAN PRESENTS Copyright...
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scientific american  special edition  -  2000 vol 11 no3  -  building the elite athlete

scientific american special edition - 2000 vol 11 no3 - building the elite athlete

Toán học

... the American Association of Neurology concussion Web site can be found at www.aan.com/public/concussionsportsindex/ sportsconcussion.htm SCIENTIFIC AMERICAN PRESENTS Copyright 2000 Scientific American, ... National Collegiate Athletic Association (NCAA) event—to teach young women how to jump safely Female ath- SCIENTIFIC AMERICAN PRESENTS Copyright 2000 Scientific American, Inc 33 searchers, physicians ... of Scienti c and Technical Information of China P.O Box 2104 Chongqing, Sichuan PEOPLE’S REPUBLIC OF CHINA tel: +86-236-3863170 Copyright 2000 Scientific American, Inc STRATEGIC PLANNING Subscription...
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scientific american  special edition  -  2002 vol 12 no1  -  the hidden mind

scientific american special edition - 2002 vol 12 no1 - the hidden mind

Toán học

... PSYCHOLOGISTS, NEUROSCIENTISTS AND THEORISTS BY FRANCIS CRICK AND CHRISTOF KOCH 10 SCIENTIFIC AMERICAN COPYRIGHT 2002 SCIENTIFIC AMERICAN, INC ©1997 C HERSCOVICI, BRUSSELS /ARTISTS RIGHTS SOCIETY ... Activity in Primary Visual Cortex? Francis Crick and Christof Koch in Nature, Vol 375, pages 121–123; May 11, 1995 Consciousness and Neuroscience Francis Crick and Christof Koch in Cerebral Cortex, ... of consciousness, it is necessary for full consciousness Yet it is SCIENTIFIC AMERICAN sual psychologists talk of iconic memory, which lasts for a fraction of a second, and working memory (such...
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scientific american  special edition  -  2002 vol 12 no2  -  the once and future cosmos

scientific american special edition - 2002 vol 12 no2 - the once and future cosmos

Toán học

... physicists to tease it out —L.M.K from other forces of nature 34 Vacuum fluctuations Casimir plates SCIENTIFIC AMERICAN THE ONCE AND FUTURE COSMOS COPYRIGHT 2002 SCIENTIFIC AMERICAN, INC JARED SCHNEIDMAN ... SCIENTIFIC AMERICAN THE ONCE AND FUTURE COSMOS COPYRIGHT 2002 SCIENTIFIC AMERICAN, INC COSMIC EXPANSION could, in theory, follow one of three simple patterns: it may be constant (left), decelerating ... SURVEYING SPACETIME 22 SCIENTIFIC AMERICAN THE ONCE AND FUTURE COSMOS COPYRIGHT 2002 SCIENTIFIC AMERICAN, INC WITH SUPERNOVAE Exploding stars seen across immense distances show that the cosmic expansion...
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scientific american  special edition  -  2003 vol 13 no1  -  the edge of physics

scientific american special edition - 2003 vol 13 no1 - the edge of physics

Toán học

... ADVERTISING ACCOUNTING AND COORDINATION: Constance Holmes DIRECTOR, SPECIAL PROJECTS: Barth David Schwartz MANAGING DIRECTOR, SCIENTIFICAMERICAN.COM: Mina C Lux DIRECTOR, ANCILLARY PRODUCTS: Diane McGarvey ... of Michigan and director of the Michigan Center for Theoretical Physics www.sciam.com THE EDGE OF PHYSICS COPYRIGHT 2003 SCIENTIFIC AMERICAN, INC 13 TRAJECTORY of a particle in spacetime traces ... www.theory.caltech.edu/people/preskill/ph229/ See www.sciam.com for Scientific American articles related to quantum information science www.sciam.com THE EDGE OF PHYSICS COPYRIGHT 2003 SCIENTIFIC AMERICAN, ...
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scientific american  special edition  -  2003 vol 13 no2  -  new look at human evolution

scientific american special edition - 2003 vol 13 no2 - new look at human evolution

Toán học

... www.sciam.com SCIENTIFIC AMERICAN COPYRIGHT 2003 SCIENTIFIC AMERICAN, INC 27 EMERGENCE Who Were the NEANDERTALS? 28 SCIENTIFIC AMERICAN Updated from the April 2000 issue COPYRIGHT 2003 SCIENTIFIC ... effectively in the extremely cold weather brought on by glacial cycles But other traits, such as the form of the Neander- www.sciam.com SCIENTIFIC AMERICAN COPYRIGHT 2003 SCIENTIFIC AMERICAN, INC ... DIRECTOR, INTERNATIONAL: Charles McCullagh VICE PRESIDENT: Frances Newburg John Rennie Editor in Chief Scientic American editors@sciam.com KAZUHIKO SANO DIRECTOR, ANCILLARY PRODUCTS: Diane McGarvey...
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scientific american  special edition  -  2003 vol 13 no3  -  new light on the solar system

scientific american special edition - 2003 vol 13 no3 - new light on the solar system

Toán học

... SCIENTIFIC AMERICAN NEW LIGHT ON THE SOLAR SYSTEM COPYRIGHT 2003 SCIENTIFIC AMERICAN, INC LAURIE GRACE; SOURCE: PETR PRAVEC Academy of Sciences of the Czech Republic ( from sunkl.asu.cas.cz /~ asteroid/3FRAs) ... three solar eclipses using CCD cameras www.sciam.com SCIENTIFIC AMERICAN COPYRIGHT 2003 SCIENTIFIC AMERICAN, INC X-RAY IMAGE taken by the RHESSI spacecraft outlines the progression of a microflare ... SCIENTIFIC AMERICAN COPYRIGHT 2003 SCIENTIFIC AMERICAN, INC 19 s u n e on nge cha ate clim al lob g NASA/JET PROPULSION LABORATORY v COPYRIGHT 2003 SCIENTIFIC AMERICAN, INC Venus’s climate,...
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