Abstract: Provided are a fused bicyclic derivative, a pharmaceutically acceptable salt, a crystal form thereof and a preparation method therefor. Specifically, provided are a hydrochloride, a mesylate, an acetate and a tartrate of the compound of formula (I), and a preparation method therefor and a crystal form thereof.

Abstract: The present disclosure relates to a curved conformal frequency selective surface (FSS) radome. The radome includes a dielectric radome and a curved conformal FSS array arranged on an outer wall of the dielectric radome, where the dielectric radome includes a dome, a circular truncated cone and a hollow cylinder which are integrally formed from top to bottom, and the curved conformal FSS array is formed by periodically arraying foldable FSS units on an outer surface of the dielectric radome, the foldable FSS unit being of an axially symmetrical and centrally symmetrical gap structure, and having an overall shape consisting of foldable gaps on a left side, an upper side, a right side and a lower side, the four foldable gaps being sequentially connected in a square shape, and remaining parts of the foldable FSS unit except for the four foldable gaps being all metal patches.

Abstract: The present disclosure relates to a curved conformal frequency selective surface (FSS) radome. The radome includes a dielectric radome and a curved conformal FSS array arranged on an outer wall of the dielectric radome, where the dielectric radome includes a dome, a circular truncated cone and a hollow cylinder which are integrally formed from top to bottom, and the curved conformal FSS array is formed by periodically arraying foldable FSS units on an outer surface of the dielectric radome, the foldable FSS unit being of an axially symmetrical and centrally symmetrical gap structure, and having an overall shape consisting of foldable gaps on a left side, an upper side, a right side and a lower side, the four foldable gaps being sequentially connected in a square shape, and remaining parts of the foldable FSS unit except for the four foldable gaps being all metal patches.

Abstract: An identity authentication method, includes: at an electronic device having one or more processors and memory, the electronic device coupled with a display and one or more input devices: receiving an identity authentication request; in response to receiving the identity authentication request, performing an interactive authentication information exchange between the electronic device and a user, including: displaying, on the display, first visual information in a first manner; displaying, on the display, the first visual information in a second manner that is distinct from the first manner, wherein the first visual information displayed in the second manner includes a timing characteristic that is absent from the first visual information displayed in the first manner; receiving user input entered in accordance with the first visual information displayed in the second manner; and verifying that the user input conforms to the timing characteristic in the first visual information displayed in the second manner.

Abstract: An identity authentication method, comprising: at an electronic device having one or more processors and memory, the electronic device coupled with a display and one or more input devices: receiving an identity authentication request; in response to receiving the identity authentication request, performing an interactive authentication information exchange between the electronic device and a user, including: displaying, on the display, first visual information in a first manner; displaying, on the display, the first visual information in a second manner that is distinct from the first manner, wherein the first visual information displayed in the second manner includes a timing characteristic that is absent from the first visual information displayed in the first manner; receiving user input entered in accordance with the first visual information displayed in the second manner; and verifying that the user input conforms to the timing characteristic in the first visual information displayed in the second manner

Abstract: An identity authentication method, comprising: at an electronic device having one or more processors and memory, the electronic device coupled with a display and one or more input devices: receiving an identity authentication request; in response to receiving the identity authentication request, performing an interactive authentication information exchange between the electronic device and a user, including: displaying, on the display, first visual information in a first manner; displaying, on the display, the first visual information in a second manner that is distinct from the first manner, wherein the first visual information displayed in the second manner includes a timing characteristic that is absent from the first visual information displayed in the first manner; receiving user input entered in accordance with the first visual information displayed in the second manner; and verifying that the user input conforms to the timing characteristic in the first visual information displayed in the second manner

Abstract: An identity authentication method, comprising: at an electronic device having one or more processors and memory, the electronic device coupled with a display and one or more input devices: receiving an identity authentication request; in response to receiving the identity authentication request, performing an interactive authentication information exchange between the electronic device and a user, including: displaying, on the display, first visual information in a first manner; displaying, on the display, the first visual information in a second manner that is distinct from the first manner, wherein the first visual information displayed in the second manner includes a timing characteristic that is absent from the first visual information displayed in the first manner; receiving user input entered in accordance with the first visual information displayed in the second manner; and verifying that the user input conforms to the timing characteristic in the first visual information displayed in the second manner