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Accent on Applications News
Imager Uses Neural Network Algorithms for Machine Vision
Feb 1, 2003 — Intelligent machines have long been the dream of systems integrators. The ability to install a component and walk away as it slowly sputters to life and begins learning its task has been the subject of science fiction for decades. The fantasy, however, has become reality. Neural networks, which simulate the analog processing of human brain cells, are being applied in the machine vision environment, where pattern recognition of constantly changing elements demands complicated...
Technique Boosts Development of Cheaper Materials
Feb 1, 2003 — Combinatorial screening has become the method of choice for researchers who test drug candidates in parallel. Advanced by Xiao-Dong Xiang and Peter Schultz at Lawrence Berkeley National Laboratory and the University of California, Berkeley, in 1995,...
Cameras Monitor Rocket Launch
Jan 1, 2003 — On Nov. 20, Boeing launched its Delta IV Medium+ (4,2) rocket, which included one of the more significant advances in launch vehicle propulsion system design since the Apollo missions. To monitor the performance of this new technology, the company...
Digital Cameras Improve Canopy Photography
Jan 1, 2003 — A successful forester must know the best conditions under which to grow a desired type of tree. For example, managing oaks in Eastern forests requires that saplings be exposed to greater than 10 percent of full sunlight to optimize selective logging...
Laser Process Cuts Thick Steel
Jan 1, 2003 — As a building material, steel is unmatched for its combination of tensile strength and flexibility and for its low cost and weight. But working the material into tools and forms that can be used on an industrial scale can be difficult. A...
Pulsed Lasers Drill Rock for Fuels
Jan 1, 2003 — Once believed to be a pipe dream, drilling for oil and natural gas with lasers now shows great promise and is receiving the attention of researchers. A team at Argonne National Laboratory is investigating the use of pulsed CO2 and Nd:YAG systems for...
Sensor Tracks Soldiers' Vital Signs
Jan 1, 2003 — Battles may be won or lost on how well troops cope with stress and fatigue. In work sponsored by the US Army Medical Research and Materiel Command at Fort Detrick, Md., for the Warfighter Physiological Status Monitoring System program, investigators...
Billions of Pixels Map the Universe
Dec 1, 2002 — Astronomy was once the purview of kings and their most learned advisers. Over the centuries, it has become increasingly accessible to a wider population interested in taking a nocturnal trek with telescope in hand or in visiting a planetarium. A...
Green Lasers Micromachine Medical Implants
Dec 1, 2002 — When one considers the impact of photonics in industry, telecommunications and aerospace immediately come to mind. Yet medical applications have witnessed an increasing advantage as well, thanks to the ability of high-power lasers to machine minute...
Laser Probe Characterizes Combustion
Dec 1, 2002 — Combustion is a complex phenomenon. When even a simple hydrocarbon such as CH4 burns in air, it produces a number of minority species, such as hydrogen and oxygen, that play important -- sometimes crucial -- roles in combustion chemistry. A better...
Optical Motion Enlivens Videos
Dec 1, 2002 — The entertainment industry is in the midst of a revolution. The artificial world of video games has been enlivened by animated figures that gasp in an imagined atmosphere and strain under the pressure of a counterfeit gravity. A company called the...
Project Tests Gas Lines as Conduit for Fiber Optic Cable
Dec 1, 2002 — The problem of connecting homes and businesses to the local area network gateway has been aptly described in terms that suggest the final leg of a marathon. The symbolism is appropriate. The last mile is the hardest, there will be only one winner,...
Camera Captures Spheromak Plasmas
Nov 1, 2002 — The promise of limitless, cheap and clean energy from thermonuclear fusion has been intriguing scientists for decades, and it is all the more enticing as we come to terms with the environmental hazards and limited supply of...
Frame Grabber Enables High-Speed Profiling
Nov 1, 2002 — Photonic component manufacturers depend on the accuracy and speed of optical metrology systems for the cost-efficient production of microelectromechanical system (MEMS) devices, thick films, optics, ceramics and advanced materials. These measurement...
Imaging Technique Hatches Egg-Sorting System
Nov 1, 2002 — Chickens headed for market fall into three subclasses: broiler birds, egg layers and breeders. Broiler birds, or meat chickens, are drawn entirely from the male population, because they grow faster than females. When a new group hatches, a...
Photonics Samples UV-Safe Clothing
Nov 1, 2002 — Skin cancer has been on the rise in the US, Australia and Europe for the past decade. More than 51,000 new cases are reported to the American Cancer Society each year. Dermatologists have recommended a battery of preventive measures, and photonics...
Software Aids Chip Design
Nov 1, 2002 — According to the current roadmap for the semiconductor industry, by 2003 half of all chips will include transistors with gates smaller than the wavelength of radiation that the stepper used to create them. Because the old rule of "what you see is...
Cold Laser Beam Cuts Clean
Oct 1, 2002 — As silicon wafers continue to become more densely populated, the technology for dicing the semiconductors has reached an impasse. The standard diamond saw cannot slice the material cleanly enough to support further reductions in die geometries...
Crystal Growth Studied in Space
Oct 1, 2002 — Insulin is perhaps one of the most studied proteins in medical science. Understanding how its structure folds and unfolds could lead to new forms of insulin that would have greater therapeutic value for the millions of people afflicted with Type I...
Howitzers Use Laser Ignition
Oct 1, 2002 — Ever since Napoleon taught the world the lessons of artillery, the field gun has been the centerpiece of battlefield strategy. The simplicity of this weapon has changed little over the years. In fact, most modifications have focused on targeting and...
Low-Divergence Laser Hits the Spot
Oct 1, 2002 — Temperature measurement in industrial applications can be challenging, particularly in harsh environments, where line-of-sight, high ambient temperatures or electromagnetic interference from nearby machinery limits direct readings. One solution is...
A New Angle on Fish Canning
Sep 1, 2002 — Existing technology for controlling the desired net weight of canned salmon relies on volumetric principles, which can introduce unacceptable errors. Although computer tomography, positron emission tomography and magnetic resonance imaging offer...
Lidar Measures Wake Vortices
Sep 1, 2002 — When a large passenger aircraft takes off or lands, it displaces a sizable volume of air that trails off the wings in a phenomenon known as a wake vortex. This invisible wake whirls up to 100 mph, leaving behind a horizontal tornado with a position...
Ultrafast Measurement Leaps Forward
Sep 1, 2002 — Ultrafast lasers have applications in telecommunications, microlithography and genetic sequencing. However, their intensity and phase vs. time have always been difficult to measure. In addition, femtosecond pulses are often plagued with spatial...
Clock to Be Tested in Microgravity
Aug 1, 2002 — When the "primary atomic reference clock in space" project is launched in 2005, it will measure the relativistic effects of gravity on time. The project is the first flight to the international space station of NASA's Laser Cooling and Atomic...
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June 2024
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