Autonomous in-orbit satellite assembly from a modular heterogeneous swarm
- MathematicsActa Astronautica
This paper presents a decentralized guidance and control scheme to combine a heterogeneous swarm of component satellites into a large satellite structure. Building on prior work, the Swarm Orbital…
Decagonal and Quasi-Crystalline Tilings in Medieval Islamic Architecture
- Materials ScienceScience
It is shown that by 1200 C.E. a conceptual breakthrough occurred in which girih patterns were reconceived as tessellations of a special set of equilateral polygons (“girih tiles”) decorated with lines.