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Listening to the sound of bullets

ShotSpotter systems relies on a system of acoustic sensors to identify the location from which a shot has been fired; the alerts are immediately conveyed to police dispatchers, 911 operators, and sometimes to officers in the field via laptops in patrol cars; the system includes a computer program which displays a comprehensive bird’s-eye view of the area, marking the location of the incident with a red dot and indicating the time and number of rounds fired
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Blast gauge gives medics, doctors critical information

Researchers are working to enhance the safety of soldiers in the field through the development of a device that monitors the physical impacts of exposure to an explosive blast; 188,270 service members have suffered a traumatic brain injury in the last decade; the extent of injury is often difficult to discern, making diagnosis and selection of appropriate medical treatment challenging
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How smartphones are fighting floods
A new smartphone app is helping the Army Corps of Engineers to strengthen its levees and fight floods in Kansas;filing reports is as simple as using a smartphone to take a picture, adding a note, and uploading the information to a database, which only takes a few seconds; this new system helps reduce the time it takes to gather critical information about levees by as much as thirty-six hours, giving engineers valuable additional time to detect and save a failing levee
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Averting bridge disasters: new sensors could save hundreds of lives
One of every four U.S. highway bridges has known structural problems or exceeded its intended life-span. Most only get inspected once every one or two years; University of Maryland researcher has developed a new sensor that measures indicators of a bridge’s structural health, such as strain, vibration, flexibility, and development of metal cracks; the sensors are expected to last more than a decade, with each costing about $20
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Tiny flying machines revolutionize surveillance work
Tiny aerial vehicles are being developed with innovative flapping wings based on those of real-life insects; incorporating micro-cameras, these revolutionary insect-size vehicles will be suitable for many different purposes ranging from helping in emergency situations considered too dangerous for people to enter, to covert military surveillance missions
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Micro-robots emulate water-striding insects

Researchers are working on building nimble micro-robots that are able to skim across the surface of water; the prototype devices emulate water-striding insects such as mosquitoes and water spiders, and could be used for military spy missions, water-pollution monitoring, and other applications
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The world’s first "printed" aircraft flies
Engineers have designed and flown the world’s first “printed” aircraft, which could revolutionize the economics of aircraft design; the plane is a UAV whose entire structure has been printed, including wings, integral control surfaces, and access hatches; it was printed on an EOS EOSINT P730 nylon laser sintering machine, which fabricates plastic or metal objects, building up the item layer by layer
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Auto theft going extinct?

Thanks to aggressive police work and new technology car theft could eventually become an obsolete problem; new technological developments like high-tech keys, immobilizer systems, and GPS tracking have made it increasingly difficult for thieves to successfully steal cars; new police tactics and technologies like bait cars and license plate scanners have given law enforcement agencies the edge in tracking down stolen cars and catching thieves
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Sensing "skin" protects concrete structures
Scientists have developed a sensing “skin” which is made of stretchy thermoplastic elastomer mixed with titanium dioxde; patches of the skin are painted with black carbon to measure changes in the electrical charge of the skin; the skin will be rolled out in patches across structures such as bridges and dams; the formation of a crack would cause a movement in the concrete under the patch, which would change the capacitance, or stored energy, of the skin; daily check by computers would detect the change the capacitance, and issue and alert
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Texas A&M launches a blimp program

Texas A&M is launching a new airship program to develop lighter-than-air (LTA) blimps; LTA systems generate lift force by using sufficient volume of a lighter-than-air gas, such as helium; heavier-than-air (HTA) systems, on the other hand, generate lift by a relative motion between the wings or rotor blades and ambient air; airships can contribute to a number of missions including disaster response, homeland security, and communications relay
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New fingermarks detection technology

The new technology uses Matrix Assisted Laser Desorption Ionization Mass Spectrometry Imaging (MALDI-MSI) to provide crime scene investigators with key extra details about suspects; these details, such as any substances they might have touched, can provide crucial background information in a criminal investigation
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Students develop landmine detection robot
A team of Texas A&M University at Qatar students and faculty has developed a state—of-the-art landmine detection robot as part of the NI Mine Detection Robot Design Contest; The competition challenged engineering students in the Middle East to work toward solutions to the real-life landmine problem that the Arab region and other areas face in the aftermath of conflict
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Mathematical framework converts junk energy into useful power

Researchers have developed a mathematical framework that could one day form the basis of technologies that turn road vibrations, airport runway noise, and other “junk”energy into useful power;
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Cambridge U team intends to win the 2011 World Solar Challenge

The World Solar Challenge, the “Formula One” of eco-friendly motorsport, consists of a 3,000 kilometer race across the Australian outback from Darwin to Adelaide; it will be held 16-23 October 2011; the University of Cambridge team believes it has a real chance to win with their newly designed Cambridge University Eco Racing (CUER) machine
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Sensors printed on wetsuits detect explosives, other hazards

UC Sand Diego researcher has successfully printed thick-film electrochemical sensors directly on flexible wetsuit material, paving the way for nano devices to detect underwater explosives or ocean contamination; UCSD has a full U.S. patent pending on the technology, and has begun talks on licensing the system to a Fortune 500 company
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More headlines
The long view
Why Nuclear Energy Is Making a Global Comeback
Nuclear energy is gaining momentum as countries seek reliable, low-emission power sources to meet increasing electricity demand and climate goals amid uncertainty in fossil fuel markets. Its revival renews long-standing debates over safety and nuclear proliferation.
