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Battling against biological threats with ultrasonics
A tweezers-like device uses ultrasonics to detect bioterror agents; when a small sample such as a powdery anthrax mix is placed inside the device, an array of piezoelectric transducers would generate an ultrasonic force field onto the sample; security officials would be able to detect anthrax from innocuous powders in the mix through differences in compressibility and density
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Quake-proofing U.S. buildings
An Indian civil engineer has invented a sleeved column braces which help buildings withstand earthquakes; the sturdy brace apparatus surrounds a core of high-performance steel, but is spaced from the sides of the core; the sleeve thus absorbs and dissipates energy, but does not buckle under pressure; several large buildings in California, built in the last few years, have adopted the technology
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Shooting payloads into space with a cannon
Using rockets to loft payloads into orbit costs $5,000 per pound; a proposed ling-barrel cannon can deliver cargo into orbit around $250 per pound; what is more, unlike a rocket, the cannon is re-usable; it will take seven years and about $500 million to build the cannon
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Robot chooses from a menu of walking styles to escape trouble
When a newly developed robot finds it cannot move freely, it scans through the many walking gaits it has taught itself and selects the best for the terrain; this means it can free itself should it get stuck; the robot has six triple-jointed legs each with several sensors; the sensors feed information to the neural network, which then determines the most appropriate gait for the terrain, and adjusts the robot’s eighteen motors accordingly
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Robots climb up the wall
Robots which mimic wall-climbing animals can be used for gathering information; they can climb up walls and peek into windows – or clamber around the submerged hulls of cargo ships to check for contraband and bombs
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Russia to build nuclear spaceships
The key technical problem in sending manned missions to the Moon and Mars is the development of new propulsion systems and energy supplies with a high degree of energy-mass efficiency; the chemical rockets used in spacecraft today expel their reaction mass with relatively low energy, making them inefficient; in the case of round-trip journeys without refueling at the other end, chemical rocket craft will need to carry so much fuel that they will struggle to deliver any useful payload
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Computer spots behavior patterns
New cognitive computational system recognizes and predicts human behavior; applications for the system could include intelligent surveillance and accident prevention
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Fire-fighting robots developed
Sheffield-Hallam University develop fire-fighting robots; these robots carry individualized laser-range, radio-signal and ultrasound sensors that are designed for specific tasks such as warning of toxic materials, providing and maintaining mobile communication links, or inferring localization information
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Hidden sensor network detects explosives
German researchers develop a covert sensor system that track people carrying explosive in busy transportation hubs; the system works using two separate sensory networks that gather chemical and kinetic information — the first is made up of a series of four to six rotating laser scanners that send pulses through corridors, walkways, or escalators at airports or railway stations; the second network consists of electronic sensors hidden in air vents and wall fixtures that provide chemical data on explosive materials
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U.K. firm says its scanning technology meets security, privacy concerns
Cambridge, U.K.-based TeraView says it is developing terahertz body scanners which use light from upper end of the infra-red spectrum, with a wavelength between 0.1 and 1mm; the scanners do not produce an image but a “fingerprint” — rather than blurry pictures of naked tourists, a TeraView scanner would return absorbance data that could be automatically analyzed to approve travelers or alert airport staff to investigate further
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U..S faces critical shortage of computer scientists
DARPA says the United States is facing a critical shortage of computer scientists; “While computers and internet connectivity become daily fixtures in the lives of Americans, we are steadily losing the engineering talent to [develop and maintain] these systems”
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Israeli ducted-fan sky-jeep in flight trials
Fancraft technology is different from hovercraft technology, because hovercrafts cannot actually fly; fancraft technology involves the use of a basic idea: ducted fans, which are essentially enclosed helicopter rotor discs; until now, the technology faced two problems: small thrust discs mean very low efficiency, leading to aircraft with unacceptably poor fuel endurance and payload even in the context of helicopters; secondly, in the past, the ducted-fan machines were almost impossible to control; an Israeli company says it has solved at least the second problem
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Keyboard strokes reveal who you are – and whether your are stressed
The rhythms of a person’s typing style are stable over time, allowing computers and ATMs to identify you; researchers suggest key strokes could be used not only to verify identity but also to detect stress or even spot early signs of Alzheimer’s disease
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Debate intensifies over full-body scanners
The Christmas Day near-bombing invigorated an already-keen interest in whole-body scanners; there is debate going on over the effectiveness – and health risks – of the two main technologies available: millimeter-wave radiation and backscatter radiation; some suggest soft chemical ionization as an alternative
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New airport security drive spurs scanner patent surge
The averted Christmas bombing was only the latest evidence that there is a need for better, and more sophisticated, airport security technologies; a look at the dossiers of the U.S. Patent Office shows that many companies and individuals have applied for patents for a variety of security technologies
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More headlines
The long view
Encryption Breakthrough Lays Groundwork for Privacy-Preserving AI Models
In an era where data privacy concerns loom large, a new approach in artificial intelligence (AI) could reshape how sensitive information is processed. New AI framework enables secure neural network computation without sacrificing accuracy.
AI-Controlled Fighter Jets May Be Closer Than We Think — and Would Change the Face of Warfare
Could we be on the verge of an era where fighter jets take flight without pilots – and are controlled by artificial intelligence (AI)? US R Adm Michael Donnelly recently said that an upcoming combat jet could be the navy’s last one with a pilot in the cockpit.
AI and the Future of the U.S. Electric Grid
Despite its age, the U.S. electric grid remains one of the great workhorses of modern life. Whether it can maintain that performance over the next few years may determine how well the U.S. competes in an AI-driven world.
Using Liquid Air for Grid-Scale Energy Storage
New research finds liquid air energy storage could be the lowest-cost option for ensuring a continuous power supply on a future grid dominated by carbon-free but intermittent sources of electricity.
Enhanced Geothermal Systems: A Promising Source of Round-the-Clock Energy
With its capacity to provide 24/7 power, many are warming up to the prospect of geothermal energy. Scientists are currently working to advance human-made reservoirs in Earth’s deep subsurface to stimulate the activity that exists within natural geothermal systems.
Experts Discuss Geothermal Potential
Geothermal energy harnesses the heat from within Earth—the term comes from the Greek words geo (earth) and therme (heat). It is an energy source that has the potential to power all our energy needs for billions of years.