Abstract: The present invention relates to a heteroaryl derivative compound and a use thereof. Since the heteroaryl derivative of the present invention exhibits excellent inhibitory activity against EGFR, the heteroaryl derivative can be usefully used as a therapeutic agent for EGFR-associated diseases.

Abstract: Provided are a method and system of verifying an increase in precipitation. The precipitation increase verification method includes: obtaining a first piece of observation information from an upwind area after a seeding experiment; obtaining a second piece of observation information from a downwind area; comparing the first piece of observation information with the second piece of observation information, and thus determining whether or not the first piece of observation information and the second piece of observation information fall within a linear scope; and determining that an effect resulting from the seeding experiment can be proved when the first piece of observation information and the second piece of observation information fall within the linear scope.

Abstract: An electronic device is provided. The electronic device includes a display device to output a user interface, a memory, a communication interface to support a first wireless communication scheme and a second wireless communication scheme, and a processor electrically connected with the display device, the memory, and the communication interface. The processor outputs a user interface for performing a pairing with the external device, by using at least one of a history of a pairing with the external device, whether the second wireless communication scheme is activated, or user account information.

Abstract: An electronic device is provided. The electronic device includes a display device to output a user interface, a memory, a communication interface to support a first wireless communication scheme and a second wireless communication scheme, and a processor electrically connected with the display device, the memory, and the communication interface. The processor outputs a user interface for performing a pairing with the external device, by using at least one of a history of a pairing with the external device, whether the second wireless communication scheme is activated, or user account information.

Abstract: A protective cover may include a first cover part configured to be opened to expose a front surface of the electronic device and to be closed to conceal the front surface of the electronic device; a second cover part rotatably coupled to the first cover part and detachably arranged on a rear surface of the electronic device; and an input device detachably provided in the first cover part.

Abstract: A protection cover is provided, which includes a first cover that is foldable, a first electronic device being attachable to or detachable from the first cover; a second cover that is connected to the first cover so as to be foldable, a second electronic device being attachable to or detachable from the second cover; and a third cover that is connected to the first cover so as to be foldable.

Abstract: A protective cover may include a first cover part configured to be opened to expose a front surface of the electronic device and to be closed to conceal the front surface of the electronic device; a second cover part rotatably coupled to the first cover part and detachably arranged on a rear surface of the electronic device; and an input device detachably provided in the first cover part.

Abstract: A protection cover is provided, which includes a first cover that is foldable, a first electronic device being attachable to or detachable from the first cover; a second cover that is connected to the first cover so as to be foldable, a second electronic device being attachable to or detachable from the second cover, and a third cover that is connected to the first cover so as to be foldable.