Abstract: In the present disclosure, a heterogeneous nickel-based oligomerization catalyst in which nickel in the form of single atom is loaded on an Al-mesoporous silicate support by ion exchange and a method for producing the same, and a method for oligomerizing light olefins, specifically C4 olefins using the catalyst are described.

Abstract: An image sensor includes a substrate including a first region and a second region disposed in a periphery of the first region. The first region includes a plurality of unit pixels and a color filter structure, and the second region includes a dummy structure including a second color filter and a plurality of dummy lenses on the second color filter. The color filter structure includes a first extension portion extending in a first direction and a second extension portion extending in a second direction, and the dummy structure includes a third extension portion extending in the first direction and a fourth extension portion extending in the second direction. A first micro-lens, a second micro-lens, and a third micro-lens are in a first corner portion, and a first dummy lens, a second dummy lens, and a third dummy lens are in the second corner portion.

Abstract: One aspect of the present disclosure provides a current collector for an electric railcar. The device comprises: a current-collecting member, which is arranged on the circumference of a wheel for an electric railcar so as to collect current from an electric railcar rail; a base member coupled to the electric railcar; and a transfer member that transferring power collected by the current-collecting member to the base member, wherein the current-collecting member comes into rolling contact with the electric railcar rail by means of rolling of the wheel so as to minimize friction.

Abstract: A wind power generation system and a moving body are disclosed. The wind power generation system comprises: a rail part for providing a horizontal movement path; and a plurality of moving bodies for moving along the movement path of the rail part. The moving body may comprise: a blade for providing power for the movement of the moving body on the basis of energy generated by the wind; a plurality of wheels, which engage with the rail part and rotate on the basis of the power provided by means of the blade, so as to move the moving body along the movement path of the rail part; and a nacelle having a power generator for producing electricity on the basis of the rotational force of the wheels.

Abstract: Disclosed is an ionomer for a high-temperature polymer electrolyte membrane fuel cell, which includes a phosphorus (P)-containing functional group having proton conductivity and partially contains fluorine in the main chain thereof.

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: An update apparatus is provided. The update apparatus may comprise: a grouping unit configured to group a plurality of robots using a network; and an update unit configured to update the plurality of grouped robots through the network.

Abstract: Disclosed herein is a management system that includes a market server having a function module registered therein to assign a specific function to hardware and a manager configured to download the function module from the market server, wherein the manager installs or deletes the function module in or from the controller.

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: A provision apparatus is disclosed. The provision apparatus may include: a generation unit configured to generate a virtual world, and generate a virtual robot that matches an actual robot in the virtual world; and a provision unit configured to provide a first functional module developed for the actual robot to the virtual robot, or provide a second functional module developed for the virtual robot to the actual robot.

Abstract: A nanofiber for an air filter and a method for manufacturing the same are proposed. The nanofiber may include a styrene-(meth)acrylate-acrylonitrile random copolymer having a zwitterionic functional group in a side chain. The nanofiber can greatly enhance the bonding of particulate matter (PM) particles with the surface of a polymer by having a high dipole moment derived from the zwitterionic functional group, thereby providing high efficiency of filtration (>99.9%) of the PM particles. Furthermore, the nanofiber can be very usefully used as a core material for air purifier filters and vehicle air purification filters by having low airflow resistance and excellent antibacterial properties.

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: 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: A macromolecular photonic crystal material including an A block and a B block is disclosed. the A block comprises a crystalline polyhedral oligomeric POSS, the macromolecular photonic crystal material represented by the structural formula 1.

Abstract: In one embodiment, the antenna arrangement includes a primary antenna having a conductive sidewall; and a loop antenna disposed in and physically separated from the primary antenna. The loop antenna includes a first conductive loop and a capacitor electrically connected between ends of the first conductive loop.

Abstract: An antenna module including a first antenna configured to transmit and receive a plurality of signals, the first antenna including a first frame antenna segment including at least a part of a metal frame, the metal frame surrounding a body housing of an electronic device, and a first coil antenna segment connected to the first frame antenna segment, the first coil antenna segment including a first conductive coil may be provided.

Abstract: In one embodiment, the antenna arrangement includes a primary antenna having a conductive sidewall; and a loop antenna disposed in and physically separated from the primary antenna. The loop antenna includes a first conductive loop and a capacitor electrically connected between ends of the first conductive loop.