Abstract: Provided is a wind power system. The wind power system may comprise: a rail for providing a movement path in a horizontal direction; a moving body configured to slide and move along the movement path of the rail; a plurality of blades installed on the moving body and providing power for the movement of the moving body on the basis of energy from the wind; and a nacelle having a generator for generating power by rotating in conjunction with the movement of at least one of the moving body and the blades.

Abstract: Disclosed are a method, a device, and a system for evaluating a product review. The method for evaluating a product review may: display, by using a server, a search box, through which the product review can be searched, on a buyer terminal; input a keyword on the basis of the search box; extract at least one piece of product review information as a search result corresponding to the input keyword; display the extracted product review information on the buyer terminal; and when a purchase decision is made in a shopping mall introduced on the basis of the displayed product review information, input, from the buyer terminal, a review evaluation corresponding to the product review. Therefore, it is possible to associate the review evaluation of the product review with the product review.

Abstract: A 3D printing-based face mask is disclosed. The face mask may comprise: a mask body which corresponds to the shape of the lower portion of a user's face and displays the shape of the user's lower portion on the outer surface thereof; at least one filter part which is mounted on at least one side of the mask body; and ear hanging parts for fixing the mask body on the user's ears. The mask body can be generated by 3D printing based on a 3D mask model corresponding to the shape of the lower portion of the face, including the lower part of the user's nose and mouth, and the at least one filter unit is mounted in correspondence with at least one of the lower part of the nose and the mouth. Accordingly, the user can wear the mask without aesthetic texture.

Abstract: Provided is a method for automatically generating a banner image for a promotion, performed by a computing device comprising a processor and a memory. The method comprises the steps of: acquiring information about any concept classification to which a product or service to be promoted corresponds from among a plurality of predefined concept classifications; determining a setting value for a foundation that is a minimum unit constituting the design of a banner image, on the basis of the concept classification to which the product or service to be promoted belongs; determining at least one component included in the banner image, on the basis of the setting value for the foundation; and generating at least one banner template including component arrangement information that is information about the location and size of which of the at least one component.

Abstract: Provided is a wind power system. The wind power system may comprise: a rail for providing a movement path in a horizontal direction; a moving body configured to slide and move along the movement path of the rail; a plurality of blades installed on the moving body and providing power for the movement of the moving body on the basis of energy from the wind; and a nacelle having a generator for generating power by rotating in conjunction with the movement of at least one of the moving body and the blades.

Abstract: An aspect of the present invention provides a raw fabric cutting device. The device comprises: a support portion for supporting a raw fabric; a compressing portion for evacuating the space between a cover arranged on the raw fabric and the support portion such that the raw fabric is compressed; a cutting portion transferred above the support portion so as to cut the raw fabric; and a sealing portion transferred together with the cutting portion and configured to supply a sealing member to an open area of the cover, which is exposed as the raw fabric is cut, thereby covering the open area, wherein the sealing portion comprises a sealing member cutting portion for forming a notch on at least one side of the sealing member in the transverse direction with regard to the direction of transfer of the sealing member.

Abstract: Disclosed herein is a system, device, and method for inputting information on the basis of a sound wave. The system for inputting information on the basis of a sound wave may comprise: a keyboard including a plurality of input keys, each of which generates a unique key sound wave as the input key is struck by a user; and an information input unit for acquiring at least one key sound wave generated as at least one of the input keys on the keyboard is struck, detecting at least one key value corresponding to the acquired at least one key sound wave, and inputting the detected key value to a device.

Abstract: Disclosed are an eye-tracking-based image transmission method, device and system. The eye-tracking-based image transmission method enables: receiving multiple images acquired from multiple cameras; generating a synthesized image on the basis of the multiple images; displaying the synthesized image on a screen; detecting the gaze of a user in real-time; selecting, from the synthesized image, the image corresponding to an area at which the user is gazing; and transmitting the selected image. Thus, an image that dynamically changes according to the gaze of a user may be provided via broadcasting.

Abstract: Disclosed are a multiple camera-based image transmission method, device and system. The image transmission method enables: acquiring multiple images by using multiple cameras; displaying a screen displayed on a monitor so as to be segmented into multiple areas corresponding to the multiple images; detecting an area at which a user is gazing; selecting the image that corresponds to the detected area; and transmitting the selected image via broadcasting. Thus, on the basis of multiple images, a broadcast image may be switched according to the gaze of a user.

Abstract: Disclosed herein is a system, device, and method for inputting information on the basis of a sound wave. The system for inputting information on the basis of a sound wave may comprise: a keyboard including a plurality of input keys, each of which generates a unique key sound wave as the input key is struck by a user; and an information input unit for acquiring at least one key sound wave generated as at least one of the input keys on the keyboard is struck, detecting at least one key value corresponding to the acquired at least one key sound wave, and inputting the detected key value to a device.