The concept was invented by a group of students at Brown University in Rhode Island after a friend complained of waking up tired and performing poorly on a test.

这一概念是由罗德岛州布朗大学的一群学生创造的，因为他们的一个朋友抱怨说早上起来很累，考试发挥得很差。

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Runtime group is another new concept.

运行时组是另一个新概念。

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Ideally, the concept of a functional testing group should disappear.

从理论上讲，功能测试小组的概念该消失了。

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The concept of a citizen group taking responsibility for its own regional economy and finding a way to issue a medium for exchange in its own area is such a powerful image.

CNN: Some communities are printing their own currency

Watches like the Stranger are often technically challenging, proof-of-concept pieces for an elite group of collectors.

FORBES: Luxury Music Box Wrist Watch Plays "Strangers In The Night"

Will Allen of HP's Digital Technology and Products group applied the concept to light and "BAM!"

ENGADGET: Wobulation: solid pic or shaky science? HD