Abstract: A method and an apparatus for real-time analysis of the district heating network is disclosed. According to an embodiment of the present disclosure, a method for analyzing a district heating network including pipes and fluids inside the pipes includes receiving, by a processor, pipe data representing a structure of the pipes; receiving, by the processor, input data on at least one of the physical state of the district heating network and the flow of fluids; calculating, by the processor, data for at least one of the physical state of the district heating network or the flow of fluids using the pipe data and the input data.

Abstract: A printed circuit board includes: a substrate layer in which a plurality of insulating layers and a plurality of wiring patterns are repeatedly layered, the substrate layer including a conductive via layer disposed in one of the plurality of insulating layers to connect wiring patterns, among the plurality of wiring patterns, disposed on upper and lower surfaces of the one insulating layer, respectively; an uppermost substrate layer including an outermost insulating layer disposed outermost within the substrate layer, and a first wiring pattern disposed in the outermost insulating layer; and a bump pad disposed on a portion of an upper surface of the first wiring pattern and having a length shorter than a length of the first wiring pattern.

Abstract: The present invention relates to an eyesight examination method, an eyesight examination device, and a downloader server for storing a program of the eyesight examination method, the eyesight examination method comprising the steps of: displaying an optotype image and a plurality of reference images; receiving a response to the optotype image; and determining whether a reference image determined on the basis of the response from among the plurality of reference images has the same shape as the optotype image, wherein one of the plurality of reference images has the same shape as the optotype image.

Abstract: The present invention relates to an eyesight examination method, an eyesight examination device, and a downloader server for storing a program of the eyesight examination method, the eyesight examination method comprising the steps of: displaying an optotype image and a plurality of reference images; receiving a response to the optotype image; and determining whether a reference image determined on the basis of the response from among the plurality of reference images has the same shape as the optotype image, wherein one of the plurality of reference images has the same shape as the optotype image.

Abstract: Disclosed herein is a jelly roll for a secondary battery configured by winding a cathode sheet, a separator, and an anode sheet, wherein electrode tabs are connected to uncoated portions of the electrode sheets, to which electrode active materials are not applied, by welding, and each of the electrode tabs is configured to have an embossed structure protruding toward the uncoated portion to improve weldability.

Abstract: A contact lens virtual fitting method comprises the steps of: capturing an image of a contact lens mounted on a contact lens holder through a second optical lens in a case forming a darkroom; identifying a contact lens region from the captured image of the contact lens; granting a degree of transparency to corresponding pixels of the contact lens region on the basis of a color of the contact lens holder or a color of a contact lens case; synthesizing the contact lens image created through the second optical lens with a pupil of an identified eye region according to the degree of transparency granted to the contact lens image; and displaying the synthesized image.

Abstract: Provided is an automatic eyesight test device comprising: a display unit for displaying an eyesight test chart image including a first figure expressed in a line and a second figure expressed in a line in the interior of the first figure; and an input unit for receiving a user input having responded to the displayed eyesight test chart image, wherein the interval between a first point of a line expressing the first figure and a point corresponding to a line expressing the second figure is narrower than the interval between a second point of the line expressing the first figure and the point corresponding to the line expressing the second figure.

Abstract: Disclosed herein is a jelly roll for a secondary battery configured by winding a cathode sheet, a separator, and an anode sheet, wherein electrode tabs are connected to uncoated portions of the electrode sheets, to which electrode active materials are not applied, by welding, and each of the electrode tabs is configured to have an embossed structure protruding toward the uncoated portion to improve weldability.

Abstract: Disclosed herein is a jelly roll for a secondary battery configured by winding a cathode sheet, a separator, and an anode sheet, wherein electrode tabs are connected to uncoated portions of the electrode sheets, to which electrode active materials are not applied, by welding, and each of the electrode tabs is configured to have an embossed structure protruding toward the uncoated portion to improve weldability.

Abstract: A printed circuit board strip and a printed circuit board panel are disclosed. In accordance with an embodiment of the present invention, the printed circuit board strip includes an unit area, a plating lead-in wire, which is for plating the unit area, and a mold gate, which is disposed on an outer side of the unit area. Here, the plating lead-in wire and the mold gate are electrically connected to each other through a lead line having a shape that is bent plural times. This can significantly save the production cost by preventing an excessive plated layer from being formed in an unnecessary area.

Abstract: A printed circuit board strip and a printed circuit board panel are disclosed. In accordance with an embodiment of the present invention, the printed circuit board strip includes an unit area, a plating lead-in wire, which is for plating the unit area, and a mold gate, which is disposed on an outer side of the unit area. Here, the plating lead-in wire and the mold gate are electrically connected to each other through a lead line having a shape that is bent plural times. This can significantly save the production cost by preventing an excessive plated layer from being formed in an unnecessary area.