Master an impressive origami jumping frog with this interactive step-by-step tutorial which puts you in creative control. Change the camera angle for the best view for you, view diagrams and repeat ...

Abstract: Flippers are important components for improving the locomotion efficiency and stability of bionic underwater robots. A novel origami-based adaptive flipper is presented to address a lack of ...

Abstract: Markovian jump systems (MJSs) can be regarded as a special type of jump system, whose jumping law governing the switches among the subsystems are a Markovian chain or process [1]. Similar to ...

Arrow keys navigate the crossword squares. Enter cycles through the clues in the board (use shift-enter to cycle in reverse). Tab selects the clue list and then highlights each clue. Use Enter to ...

Follow a timeline of key events in Mark Twain's life.