Posts Tagged "bigdata"
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Smart cities: analytics, bigdata, cheap IoT sensors
Analytics, big data, cheap IoT sensors and other new #tech will help create smart cities and reduce air pollution. Shown here is Shanghai as seen from the bund (We originally used this photo in our much longer article about pollution in China, but the photo itself drew a lot of reader interest here and on social media). The haze over the city is due to PM2.5 particulate air pollution, which NASA estimates kills over 2 million annually. PM2.5 pollution levels in Shanghai are frequently in what the US EPA would consider the “unhealthy” range, at which 24 hour exposure can impact cancer statistics according to WHO information. Today, citizen scientists can purchase inexpensive arduino-based iot devices to help them monitor indoor and outdoor pollution levels (Wikipedia link). Analytics on the data can help inform policies to help mitigate the pollution, as well as help residents take steps to stay healthy. Read more in our earlier article that originally featured this photo.… Read the restVR Data Preservation: Is this dutch masterpiece painting really a 400-year old photograph made by a human?
Coming back to our earlier posts on data modeling of the impacts of investment in world literacy (represented by another 400-year-old dutch masterpiece painting of a schoolhouse) and 3D-digital big data preservation of the Buddha destroyed by the Taliban (also related to literacy as we’ll discuss in the future), we wanted to circle back around and discuss just the data and Virtual Reality aspects of these dutch masterpieces themselves. Texas inventor Tim Jenison noticed that the Dutch master artist Vermeer had perfectly captured the pattern of light dappling in the background, although this cannot be seen by an unaided human eye. (Although you can see the light is dappled, your brain still reinterprets most of the shading as a flat surface with a single color, preventing you from seeing the subtle variations of grading. To get exact shades as perfect as in the painting, Jenison feels an optical device must have been used the obscures most of the image, so that each the shade in each ‘pixel’ can be matched exactly by the painter.… Read the restDigital data preservation: big data foils Taliban?
Digital data preservation: The photo pictures the larger Buddha of Bamiyan as it was (1968) and as it is today (2008 photo) after it was destroyed in 2001 by the Taliban, supposedly on the orders of Bin Laden himself (according to one documentary). Built 1,500 years ago in the 6th century AD, the Buddhas were a UNESCO World Heritage Site, and the larger statue was 53m tall (174 feet), the largest #statue in the world. But thanks to big data (well, small data in 1968) it turns out the larger Buddha cannot be destroyed, for it has been digitally preserved forever. Long before the Taliban came to power, high-resolution photographs were taken from multiple camera positions. Half a century ago, way back in 1968, scientists already used the technique of photogrammetry to reconstruct a 3D contour plot by analyzing the data from the multiple photographs. With the computers of that day, a 3D model accurate to within 20 centimeters preserved the giant Buddha.… Read the restEbola: Can big data or semantic text help?
“Many problems” in this case Yes it can. We’ll get to to how big data or semantic meaning can help in a moment. First a few observations. As the Prof. Redlener, the NYT’s expert on disaster preparedness put it, “There are many, many problems that have been revealed by this single case.” This is a polite way for saying what at the Dallas hospital was a major screw-up that needlessly put lives in danger and unnecessarily forced additional people into a 21-day quarantine. We can talk about using semantic text technologies to prevent these kinds of hospital errors, or big data to improve traveler screening processes. At the end of the day, however, this is a type of error that the billing department at the Dallas hospital should have been able to catch. EbolaCare(TM) insurance “Where do we send this bill?” “Hmmm, address in Liberia. Looks like he has EbolaCare(TM), the national health plan of Liberia.”… Read the restRecent Posts
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