Saturn’s C and B Rings From the Inside Out
NASA – On July 1, 2004, NASA’s Cassini spacecraft arrived at Saturn, marking the end of the spacecraft’s nearly seven-year journey through the solar system as well as the beginning of its tour of Saturn, its rings, moons and magnetosphere.
This image, taken on June 30, 2004 during Cassini’s orbital insertion at Saturn, shows, from left to right, the outer portion of the C ring and inner portion of the B ring. The B ring begins a little more than halfway across the image. The general pattern is from “dirty” particles indicated by red to cleaner ice particles shown in turquoise in the outer parts of the rings.
The ring system begins from the inside out with the D, C, B and A rings followed by the F, G and E rings.
This image was taken with the Ultraviolet Imaging Spectrograph instrument, which is capable of resolving the rings to show features up to 97 kilometers (60 miles) across, roughly 100 times the resolution of ultraviolet data obtained by the Voyager 2 spacecraft.
Image Credit: NASA/JPL/University of Colorado
Jet Testing Method Brings Inspectors to the Cloud
GE – It could happen anywhere. An airline is about to send a jet to the gate, when a mechanic detects a possible crack in the fuselage during a routine check.
Bob Ward, a general manager at GE Inspection Technologies, whose specialty is electromagnetic eddy current testing, and his team recently developed a portable system connected to the Industrial Internet that allows mechanics to test parts and tap the wisdom of the crowd to analyze them.
“We saw that there was a need in the marketplace to lower the learning curve for young inspectors and transfer knowledge to them from older workers.”
The system records testing data, matches it with inspection guidelines developed by experienced inspectors, and displays the results on a tablet-like device. It also ditigizes the paper trail.
Technicians can use it to communicate with their peers around the world. “The customer can feel confident the data inspectors are getting when they need to decide whether a plane should fly,” Ward says.
Like other non-destructive diagnostic tools, the system uses eddy-current to detect tiny cracks inside parts or under layers of paint. The probe generates a complimentary magnetic field that induces eddy current in parts made from conductive materials. Defects change the flow of the current and alter the magnetic field.
Reading the signals, however, is a complex task that often requires years of expertise with the instrument. Even experts frequently rely on thick field manuals to read the data and compare notes with colleagues to interpret the results.
The best inspectors are not getting younger. Some 40 percent of them are 56 years old or older.
“There’s a problem with the pipeline of technicians.” more> http://tinyurl.com/k98wso9
Posted in Business, Economic development, Economy, Education, Energy & emissions, Product, Technology
Tagged Aircraft, Airline, Business, Electronics, GE, Internet, Jobs, Technology, Test & measurement, United States
By Annie Murphy Paul – Dealing with emotion — helping students regulate their feelings, quelling frustration and rousing flagging morale — is the third important function that human tutors fulfill.
“The first thing we had to do is identify which emotions are important in tutoring, and we found that there are three that really matter: boredom, frustration and confusion,” Sidney D’Mello said.
“Then we had to figure out how to accurately measure those feelings without interrupting the tutoring process.” more> http://tinyurl.com/k26gckm
Posted in Broadband, Business, Economy, Education, Media, Net, Technology
Tagged Business, Industrial economy, Internet, Jobs, Technology, Tutoring, United States
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