The novel concept of simultaneously transmitting and reflecting (STAR) reconfigurable intelligent surfaces (RISs) is investigated, where the incident wireless signal divided into transmitted reflected signals passing both sides space surrounding surface, thus facilitating a full-space manipulation propagation. Based on introduced basic model `STAR', three practical operating protocols for STAR-...

Purpose The authors search the optimal distribution of bending flexure along axis rod. For solution actual problem, stability equations take into account all possible convex, simply connected shapes cross-section. study cross-sections with equal principal moments inertia. are similar geometric figures related by a homothetic transformation respect to center on rod and vary its axis. cross-secti...