@gongji: How to guess the combinations of features to test when you don't how a customer would use it is a good questions. In a printer, for example, we could print a page on letter paper at 600 DPI single-sided. And we could print on ledger paper at 300 DPI double-sided. And many other combinations of settings for the print job. I wrote a random tester which randomly set about 20 parameters and then tried to print page. We did find one obscure defect with that method. But was it enough? I came across this article, "Combinatorial Software Testing" in IEEE's Computer August 2009 magazine that addressed that very topic. I downloaded their ACTS software (http://csrc.nist.gov/groups/SNS/acts/) and played with it, but as is typical, real work interfered with research for a better way.
Lantronix Inc. has expanded its line of controllers for sensor networks with the release of a rugged controller that improves management of automation systems used in a number of industries, including manufacturing, oil and gas, and chemicals.
Inspired by the hooks a parasitic worm uses to penetrate its host's intestines, the Karp Lab has invented a flexible adhesive patch covered with microneedles that adheres well to wet, soft tissues, but doesn't cause damage when removed.
A quick look into the merger of two powerhouse 3D printing OEMs and the new leader in rapid prototyping solutions, Stratasys. The industrial revolution is now led by 3D printing and engineers are given the opportunity to fully maximize their design capabilities, reduce their time-to-market and functionally test prototypes cheaper, faster and easier. Bruce Bradshaw, Director of Marketing in North America, will explore the large product offering and variety of materials that will help CAD designers articulate their product design with actual, physical prototypes. This broadcast will dive deep into technical information including application specific stories from real world customers and their experiences with 3D printing. 3D Printing is