ActionTextSearch. Software Radio. What is software radio? Software radio is the art and science of building radios using software. Given the constraints of today's technology, there is still some RF hardware involved, but the idea is to get the software as close to the antenna as is feasible. Ultimately, we're turning hardware problems into software problems. When you say radio, what do you mean? By radio, I mean any kind of device that intentionally transmits or receives signals in the radio frequency (RF) part of the electromagnetic spectrum.
This of course includes our every day AM and FM radios such as those in our homes and cars. TV's are radios that happen to turn the signals they receive into moving pictures and sound. Why would I want a software radio? Well, you might not. They can be reconfigured "on-the-fly". What's the story with free software radio? First off, let's make sure we're on the same page with regard to free software. What's so good about that? Education Innovation, Innovation, Innovation GNU Radio. Micropower Broadcasting - A Technical Primer. Wired 12.02: Living Machines. Living Machines Technology and biology are converging fast. The result will transform everything from engineering to art - and redefine life as we know it. By Christopher Meyer, Jason Lohn, Karl Jacob, Dick Morley, Shana Ting Lipton, Marco Dorigo, Avery Pennarun The New Facts of LifeScientific advances point to a startling conclusion: The nonliving world is very much alive.by Christopher Meyer Copernicus demoted humanity by removing Earth from the center of the universe.
The notion that the inorganic world is alive is as old as mythology; think of Poseidon, the Greek personification of the sea. EMERGENCE describes the way unpredictable patterns arise from innumerable interactions between independent parts. SELF-ORGANIZATION is a basic emergent behavior. REPRODUCTION was considered strictly the purview of organisms until recently. COEVOLUTION inevitably accompanies evolution. Consider a hypothetical pod of Predator drones. Page 2 >> Previous Story: The Quiet Zone Next Story: Nintendo Rocks! Alt.satellite.gps. Sci.geo.satellite-nav. GeoCommunity. BANCA DATI AMBIENTALE. Argo Robotic Instrument Network Now Covers Most Of The Globe. Scientists have crossed an important threshold in an international effort to deploy a global network of robotic instruments to monitor and investigate important changes in the world's oceans.
Researchers with the international Argo program announced they have reached the point where 1,500 ocean-traveling float instruments-half the target 3,000-float array- are now operating. This marks an important milestone in the program's mission to capture valuable data around the globe. The Argo floats, which are robotically programmed to record and transmit data, are uniquely positioned to provide important information about climate and weather phenomena. Other applications of Argo information include: ocean heat storage and climate change; ocean salinity changes due to rainfall; ocean-driven events such as El Nino; impacts of ocean temperature on fisheries and regional ecosystems; interactions between the ocean and monsoons; and how the oceans drive hurricanes and typhoons.
Non-photorealistic camera. I recently visited Ramesh Raskar at the Mitsubishi Electrical Research (MERL) lab in Cambridge, MA to learn more about his multi-flash camera innovation that recently made an impressive appearance at the SIGGRAPH 2004. Raskar has been working on the multi-flash system for 3 years in collaboration with Karhan Tan, Amit Agrawal, and Rogerio Feris. If you grew up in the 80's, and watched early MTV, you might remember A-Ha's "take on me" line drawing animation video. Unfortunately, for the "take on me" video directors, Raskar's innovative technology was some twenty years away! The multi-flash camera captures real life images and renders them in a non-photorealistic line-form.
Ramesh Raskar describes this process as computational photography. What does it do? Additionally, the multi-flash can detect shapes that an ordinary camera would not be able to replicate. How does it work? Future applications engine example more. The Cubatron. NdFeB Magnets, Magnet Wire, Books, Weird Science, Needful Things. A blob of ferrofluid in a petri dish, with a 1 inch dia. x 1/4 inch thick NdFeB disc magnet underneath (our Item#1) A ferrofluid is a stable colloidal suspension of sub-domain magnetic particles in a liquid carrier.
The particles are about 100 Angstroms in size, and are coated with a surfactant to keep the particles from clumping together (even when a magnetic field is applied). By volume, a ferrofluid is about 5% magnetic solids, 10% surfactant, and 85% carrier. When no external magnetic field is present, the magnetic moments of the particles are random, and the fluid is not magnetic. When an external magnetic field is applied, the magnetic moments of the particles orient themselves almost instantly to the magnetic field lines of the external source. Ferrofluid is used in many industrial applications. A ferrofluid will always tend to move to the region of highest flux. We do offer ferrofluid and all of the magnets used in these demonstration photos for sale on our web SHOPPING CART.
Biopresence News.