​Software builds your life history from tweets

PTI | Oct 15, 2013, 05.32 AM IST
READ MORE Wikipedia|tweet|Gold|Cornell University|Carnegie Mellon University
WASHINGTON: Twitter users, beware ! Your tweets can reveal your life history! Researchers have developed a new technique that studies your tweets to identify the most significant events you have experienced and assembles them into an accurate life history.

The algorithm developed by researchers at Carnegie Mellon University in Pittsburgh and Cornell University in Ithaca can sort out news of important events from entirely trivial details from Twitter streams. Researchers Jiwei Li and Claire Cardie can use the algorithm to generate an accurate chronology of a person's life-changing events, without knowing anything about them.

Li and Cardie test their idea by mining the streams of 20 ordinary twitter users and 20 celebrities over a 21 month period from 2011 to 2013. They then asked the ordinary users to create their own life history by manually identifying their most important tweets, according to 'MIT Technology Review' .

For the celebrities, Li and Cardie used Wikipedia biographies and other sources of information to create 'gold standard' life histories manually. When they compared these gold standard life-histories against the ones generated by their algorithm, their method had accurately picked out many important life events that are also identified in the gold standards. However, the technique only works with users who tweet regularly and with enough followers to allow the algorithm to spot the unique pattern of responses that identifies important tweets.

Still, that is a significant number of people and Lie and Cardie said their technique can be broadly applied.
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Railway man’s fumigation chamber wins PM award

TNN | Oct 10, 2013, 02.35 AM IST
READ MORE man’s fumigation chamber|Basin Bridge train care centre
CHENNAI: B Selvam, a senior section engineer at the Basin Bridge train care centre in Chennai, had a problem. The pesticides meant to sanitise train coaches weren't working. Determined to find a solution, he scoured the crevices of a coach with a pencil camera attached to a laptop. What he found — colonies of pests and bed bugs behind walls, floors and the roof — spurred him to devise a fumigation chamber.

It not only proved a success but also won him the Prime Minister's Shram Vir award for 2012. "I used a network of narrow tubes through which poisonous methyl bromide gas was pumped into the crevices of coaches. A chamber was made so that coaches could be kept in isolation," said Selvam.

Southern Railway chief mechanical engineer S K Sood said, "The gap between the inner walls and the metal shell is six inches wide and there was no way to send pesticides into the gap. A chamber was made of used rexine to accommodate a coach so that fumigation could be done without affecting workers."

After it proved a success, a chamber to accommodate three coaches was made at the yard last year. The coaches treated in the chamber remain pest-free for six months.

Southern Railway general manager Rakesh Misra said, "Last year, we got a lot of complaints about pests in coaches. Now, the complaints have come down."
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3D Printing, Cloud Engine Revolutionize Manufacturing

Ariella Brown
One of the delights of writing for The Enterprise Cloud Site is learning about things that sound unlikely but really do exist, like the Society for Printable Geography. The printable does not refer to traditional maps but to 3D printing, which renders geographical data into iPhone cases, pendants, earrings, and puzzles.
All this is made possible by Sculpteo, a company that combines 3D printing with a cloud engine.
The 3D-printing Cloud Engine enables businesses to incorporate advanced 3D printing into their product lines and actually create products on-demand. Sculpteo says that it offers a choice of 35 different materials and can print one to 500 items a week for a given customer.
3D printing changes many aspects of manufacturing. Projects that once required specialized equipment, weeks of work, and required minimum orders can now be carried out on-demand. Just open a user-friendly interface, upload plans, and get exactly what you want.
In a press statement, Clément Moreau, CEO and cofounder of Sculpteo, called the cloud engine project a bid to become "the PayPal of the 3D printing industry."
Speaking of PayPal, the company that owns it recently partnered with Sculpteo. In July, eBay joined with Sculpteo -- as well as MakerBot and Hot Pop Factory -- to form eBay Exact. Currently in beta, eBay Exact is an iOS app that enables customers to order 3D-printed iPhone cases, figurines, and jewelry from their mobile devices.
Sculpteo introduced its own mobile app last year. Customers can use their Apple devices to browse the company's collection of designs, learn about 3D designers, and upload photos to 3D-print personalized gifts. This allows consumers to order directly through Sculpteo, and its cloud engine is available to resellers, too.
Not just for toys
Sculpteo's cloud engine enables a number of businesses -- like Printable Geography and MWOO -- to offer 3D-printed products. The problem is, whimsical-but-ultimately-useless objects are what most people think of now when they consider 3D printing.
3D printing is not just for hobbyists and collectors, though. It also has many applications in robotics, architecture, scientific research, and education. Sculpteo's testimonial page references professionals in a variety of fields who benefit from 3D printing, particularly those who need key components, prototypes, or models to assemble new structures, tools, or devices.
As 3D printing advances, it's certain that we will see it put to even more practical uses, and perhaps others will turn to the cloud to realize their own 3D visions.
What clever applications of 3D printing have you seen? Share your thoughts in the comments.
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