1 hour of Node projects:

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Making telescopes that curve and twist

New computational tool automates design of telescoping structures that provide compact storage and rapid deployment. Shown here: a complex telescoping lizard expands to many times its original volume, serving as a stress test of the method. Credit: Chris Yu/Carnegie Mellon University A new tool for computational design allows users to turn any 3D shape into a collapsible telescoping structure. New mathematical methods developed by researchers at Carnegie Mellon University capture the complex and diverse properties of such structures, which are valuable for a variety of applications in 3D fabrication and robotics—particularly where mechanisms must be compact in size and easily deployable. The research, "Computational Design of Telescoping Structures," led by Carnegie Mellon Professors Stelian Coros and Keenan Crane and PhD student Christopher Yu, will be presented at the annual SIGGRAPH conference, 30 July to 3 August in Los Angeles. The conference each year spotlights the...

About Node.js

As an asynchronous event driven JavaScript runtime, Node is designed to build scalable network applications. In the following "hello world" example, many connections can be handled concurrently. Upon each connection the callback is fired, but if there is no work to be done, Node will sleep. const http = require ( 'http' ) ; const hostname = '127.0.0.1' ; const port = 3000 ; const server = http . createServer ( ( req , res ) = > { res . statusCode = 200 ; res . setHeader ( 'Content-Type' , 'text/plain' ) ; res . end ( 'Hello World\n' ) ; } ) ; server . listen ( port , hostname , ( ) = > { console . log ( `Server running at http:// ${ hostname } : ${ port } /` ) ; } ) ; This is in contrast to today's more common concurrency model where OS threads are employed. Thread-based networking is relatively inefficient and very difficult to use. Furthermore, users of Node are free from worries o...

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