Interactive 3D visualization of the Hopf fibration — a map from S³ to S² where every point on the 2-sphere has a circle (fiber) as its preimage. Stereographic projection maps these fibers into R³, ...

A circular economy involves maintaining manufactured products in circulation, distributing resource and environmental costs over time and with repeated use. In a linear supply chain, manufactured ...

Abstract: This study proposes a hierarchical control structure for a smooth transition of multi-bus microgrids from islanded mode to grid-connected mode. The proposed control structure uses an average ...

Abstract: This contribution aims to construct an adaptive locomotion controller for legged robots based on learning animals' rhythmic behaviors. The design of locomotion control method, different from ...

The German original of this note had been dedicated and presented to C. Caratheodory on his seventieth birthday on September 13, 1943. Though accepted for subsequent publication it never appeared in ...