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Enhanced armor

Article Abstract:

One of the least apparent recent improvements in armor has been the development of new, ultrahigh-hardness steels which are as much as 20 percent harder than the hardest off-the-shelf high-carbon steels, but they tend to be brittle and can crack when hit. Armor Holdings has introduced an optimized version called UH56 steel, which is hard enough to fracture armor-piercing ammo, but tough enough not to crack with many impacts and is also easier to shape.

Author: Ashley, Steven
Publisher: Scientific American, Inc.
Publication Name: Scientific American
Subject: Science and technology
ISSN: 0036-8733
Year: 2006
Surgical appliances and supplies, Innovations, Safety equipment and supplies industry, Safety equipment industry, Armor, Armor Holdings Inc., AH, Armour

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Cognitive radio

Article Abstract:

Latest cognitive radios and other new wireless devices avoid transmission constrictions by switching instantly to nearby frequencies that they sense are clear. Adaptive software enables these intelligent devices to reconfigure their functions to meet the demands of communications networks and the new flexibility afforded by cognitive radio might enable consumers to take advantage of cheaper wireless network paths available locally to make calls.

Author: Ashley, Steven
Publisher: Scientific American, Inc.
Publication Name: Scientific American
Subject: Science and technology
ISSN: 0036-8733
Year: 2006
Forecasts, trends, outlooks, Forecasts and trends, Wireless communications, Technology application, Market trend/market analysis, Wireless communication systems, Mobile communication systems, Wireless technology, Adaptive control, Wireless signal repeaters

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Power-thrifty PCs: Billion-dollar savings with better power supplies

Article Abstract:

A new focus on energy saving for the personal computer (PC) had emerged, by making PC power supplies 80 percent efficient, which would save U.S. energy use by 1 to 2 percent and pare $ 1 billion or more from the nationEs yearly electric bills. Federal and state agencies, environmental groups, electric utilities and computer industry were undertaking the goal of new energy-saving efforts.

Author: Ashley, Steven
Publisher: Scientific American, Inc.
Publication Name: Scientific American
Subject: Science and technology
ISSN: 0036-8733
Year: 2004
General services, Electric Utilities, Electric Power Generation, Transmission and Distribution, Other Computer Peripheral Equipment Manufacturing, Electric services, Electronic components, not elsewhere classified, Computer Power Supplies, Microcomputers, Maintenance and repair, Power supplies (Computers), Personal computers, Power supply, Distributed power supply

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Subjects list: United States, Usage
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