Abstract: Knowledge space theory is a theory that uses mathematical language to evaluate learners’ knowledge and guide future learning, belonging to the research field of mathematical psychology.

Abstract: New concepts to generate extremely high output power with ultrashort pulse duration are developed. At first, an oversized coaxial Cherenkov generator with a profiled and extended slow wave ...

Two decades ago, Audi transformed itself from a brand that competed with Subaru, at least in the eyes of consumers, to one viewed on par with BMW and Mercedes-Benz. No easy feat, as unlike those other ...