Abstract: An aircraft controlled by compressed air according to an embodiment of the present invention comprises: a fuselage (10) having main wings (20) on both sides thereof; a first nozzle (12) mounted to the roof of the fuselage (10); second nozzles (22) mounted on the top surfaces of the main wings (20); a first tank (31) disposed in the fuselage (10) or the main wings (20) and storing compressed air; and a main control valve (40) for controlling the compressed air so that the compressed air is provided to the first nozzle (12) or the second nozzles (22).

Abstract: A vertical take-off and landing aircraft using a hybrid electric propulsion system, according to an embodiment of the present invention, includes: a first control step (S1) of changing a destination when an engine (10), a power generator (20), an engine control unit (30), a power management device (40), a control unit (50), a battery management system (60), a main battery (62) and the like malfunction, thereby causing a normal flight to be difficult; a second control step (S2) of performing control so that an aerial vehicle (1) glides to a point (T), at which same has entered a first space (CEP-1) required for landing or a wider second space (CEP-2) considered safe, and maintains lift and has minimized flight air resistance after passing through the point (T); a third control step (S3) of performing control so that lift is increased and performing control so that a nose cone is switched into an upward direction; and a fourth control step (S4) of performing control so that lift is gradually reduced, and contro

Abstract: Disclosed is a book recommendation method utilizing similarity between books. Provided according to one aspect of the present invention is the book recommendation method on the basis of similarity between books, including the steps of: (1) generating, by a book recommendation server, a story flow emotion graph for each of a plurality of books; (2) calculating, by the book recommendation server, similarity between a story flow emotion graph of a first book and a story flow emotion graph of a second book; and (3) outputting, by the book recommendation server, according to the similarity, at least one similar book similar to the first book.

Abstract: The present invention relates to an extracellular vesicle derived from Lactobacillus paracasei and a use thereof, and more particularly, to a composition for alleviating, preventing or treating an inflammation disease and a cancer, which comprises an extracellular vesicle derived from Lactobacillus paracasei, which may effectively inhibit various inflammation disease, as an active ingredient, and the like.

Abstract: The present invention relates to an extracellular vesicle derived from Lactobacillus paracasei and a use thereof, and more particularly, to a composition for alleviating, preventing or treating an inflammation disease and a cancer, which comprises an extracellular vesicle derived from Lactobacillus paracasei, which may effectively inhibit various inflammation disease, as an active ingredient, and the like.

Abstract: An advertising board for a vehicle and an apparatus for fixing an advertising screen, which can fix the advertising screen, attached to one side of the vehicle, in the condition that the advertising screen is spread with a desired tension. The advertising board for vehicle includes an advertising screen; a screen coupling part which is formed along edge sides of the advertising screen; a wall surface coupling part which is fixed to a wall surface of the vehicle; and tension means which pulls the screen coupling part toward the wall surface coupling part.