Rock is wrapped by paper, paper is cut by scissors and scissors are crushed by rock. This simple game is popular among children and adults to decide on trivial disputes that have no obvious winner, but cyclic dominance is also at the heart of predator-prey interactions, the mating strategy of side-blotched lizards, the overgrowth of marine sessile organisms and competition in microbial populati...

In order to understand the role of space in ecological communities where each species produces a certain type of resource and has varying abilities to exploit the resources produced by its own species and by the other species, we carry out a comparative study of an interacting particle system and its mean-field approximation. For a wide range of parameter values, we show both analytically and n...

Abstract Almost all Acehnese still rely on the sundak (pointed blade) or machete to peel coconut skin. The use of has a high work risk even though workload is relatively light. sharp tip can injure operator when peeling Therefore, skin peeler designed with different types, namely crank type, tipping and scissors type. operator’s analysis carried out be useful for developing design so that it ho...

Upon changing the oxidation state, a reversible open-close motion of chiral molecular scissors, composed of a redox-active ferrocene pivot and an isomerizable azobenzene strap, can be realized only by UV light.