In the Exploration of electric Aircraft Concepts and Technologies (EXACT) project, several hybrid-electric propulsion system concepts and possible aircraft configurations will be investigated and ...
The conceptual definition study is planned to last for 18 months, with a focus on identifying and analyzing platforms and ...
In this case study I traced the process of conceptual change in a young boy, my grandson, from the middle of kindergarten until the beginning of second grade. Data included field notes of informal ...
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