Abstract: The present disclosure includes a negative active material manufacturing method for lithium secondary battery, comprising: grinding the metal-based material into metal-based material nanoparticles through a grinding process; obtaining spherical particles by spheronizing the pulverized metal-based material nanoparticle, a conductive material, and a conductive additive together; obtaining a composite by complexing the spherical particles with an amorphous carbon-based precursor material; and carbonizing the composite; the conductive additive is a carbon nanotube; a content of the carbon nanotube is 0.2 to 2.3 wt % compared to the metal-based material nanoparticle in the composite, a negative active material according to the method, and a secondary battery including the same.

Abstract: The present disclosure relates to a method for searching for the shortest path having a minimum link between buildings in a rectilinear polygon obstacle environment, which has been implemented to calculate the shortest path having a minimum link, among the shortest paths based on a Manhattan distance from one building to another building, when buildings are given in a rectilinear polygon obstacle environment. According to the present disclosure, in searching for the shortest path having a minimum link between two buildings, a more efficient data structure can be used in terms of an execution time and memory. A building-building minimum link and shortest path search problem can be solved through only the addition of very small operations by using the segment-point minimum link and shortest path search algorithm which can be easily expanded to the building-building minimum link and shortest path search problem.

Abstract: A process for electrically connecting contact surfaces of electronic components by capillary wedge bonding a round wire of 8 to 80 ?m to the contact surface of a first electronic component, forming a wire loop, and stitch bonding the wire to the contact surface of a second electronic component, wherein the wire comprises a wire core having a silver or silver-based wire core with a double-layered coating comprised of a 1 to 50 nm thick inner layer of nickel or palladium and an adjacent 5 to 200 nm thick outer layer of gold.

Abstract: Provided is an X-ray tube which includes a first electrode, a second electrode spaced apart from the first electrode, a target disposed in a lower portion of the second electrode, an emitter on the first electrode, a third electrode which is positioned between the first electrode and the second electrode and includes an opening at a position perpendicularly corresponding to the emitter, and a spacer provided on the third electrode and surrounding the second electrode. The spacer includes a first section located adjacent to the third electrode and a second section disposed on the first section. The spacer includes a ceramic insulator and conductive dopants dispersed within the ceramic insulator. A concentration of the conductive dopants in the first section of the spacer is greater than a concentration of the conductive dopants in the second section. The third electrode is in contact with the first section of the spacer.

Abstract: The present invention relates to a polysiloxane-polycarbonate copolymer using a hydroxyl terminated polysiloxane mixture, and a method for producing same, and more specifically, to: a polysiloxane-polycarbonate copolymer which includes hydroxy-terminated polysiloxanes of chemical formulae 1 and 2 in a specific weight ratio as repeating units, and thus exhibits excellent transmittance and low-temperature impact strength compared to the case of using either of the hydroxy-terminated polysiloxanes by itself, and in which the overall production yield of the raw material polysiloxane is improved, such that the polysiloxane-polycarbonate copolymer is excellent in terms of economics; and a method for producing same.

Abstract: Provided are an electronic apparatus for transporting an item and an operation method thereof. The operation method includes identifying characteristic information of the item, identifying whether the identified characteristic information comprises main characteristic information associated with planned placement, based on a result of whether the identified characteristic information comprises the main characteristic information, identifying a placement space corresponding to the main characteristic information among a plurality of placement spaces or identifying one placement space among the plurality of placement spaces, and controlling a transport device to transport the item to a location corresponding to the identified placement space.

Abstract: The present disclosure relates to a GIS geographical information retrieval method using a dynamic k-nearest neighbor search algorithm in an obstacle environment, which has been devised to search for geographical information by using a dynamic k-nearest neighbor search algorithm in an obstacle environment. The GIS geographical information retrieval method using a dynamic k-nearest neighbor search algorithm in an obstacle environment has an effect in that it can optimize a search time by considering obstacles as a range of angles, not discrete objects, on the basis of a query point, using the shortest path characteristics at the same time, and assigning priority to neighbors based on the calculated range of angles.

Abstract: A gripper includes a finger module coupled to one side of a palm module, the palm module including a first power unit including a first rotary shaft and configured to rotate the first rotary shaft, a screw member configured to rotate in conjunction with a rotation of the first rotary shaft, a nut member coupled to the screw member, a first member coupled to the nut member and movable in a vertical direction in conjunction with a vertical motion of the nut member, the first member having a groove extending in one direction and having a recessed shape, and a connection member having a first side coupled to the finger module and a second side inserted into the groove, wherein the connection member is movable away from or toward the screw member by restriction between the connection member and an inner surface of the groove.

Abstract: The present invention relates to a compound represented by Formula 1 wherein A, B, L, X, and R1 to R6 are as described herein, or a pharmaceutically acceptable salt thereof, which serves as a GLP-1 receptor agonist and may be useful in the prevention or treatment of a disease associated with GLP-1 activity.

Abstract: Provided is an X-ray tube including a cathode structure, an anode spaced apart from the cathode structure, a spacer structure disposed between the cathode structure and the anode, and an external power supply connected to each of the cathode structure, the anode, and the spacer structure. Here, the spacer structure includes a first spacer disposed adjacent to the cathode structure and a second spacer disposed on the first spacer and disposed adjacent to the anode. The first spacer includes a first portion adjacent to the cathode structure and a second portion adjacent to a contact point of the first spacer and the second spacer. The second spacer includes a third portion adjacent to the contact point and a fourth portion adjacent to the anode. Each of the first portion and the third portion has a volume resistivity less than that of the second portion.

Abstract: Provided is a method for manufacturing an electric field emission device. The method for manufacturing the electric field emission device includes winding a carbon nanotube yarn around outer circumferential surfaces of a metal plate in a first direction, pressing both side surfaces of the metal plate through a pair of metal structures, wherein a top surface of the metal plate is exposed from the metal structures, and an area of the top surface of the metal plate is less than that of each of both the side surfaces of the metal plate, and cutting the carbon nanotube yarn at an edge portion of the top surface of the metal plate in the first direction to form a plurality of emitters.

Abstract: Provided is a high voltage driving device including a housing and a cathode, an anode, and an insulation structure, which are disposed in the housing. Here, the cathode and the anode are spaced apart from each other with the insulation structure therebetween. Also, the insulation structure includes a first solid insulator disposed adjacent to the cathode and a second solid insulator disposed adjacent to the anode. Also, the first solid insulator has first volumetric resistivity less than second volumetric resistivity of the second solid insulator, and the first solid insulator contacts the cathode.

Abstract: Provided is a method for matching antenna impedance in a wireless communication system. The method includes determining an approximate reflection coefficient based on an input signal and an output signal of a bidirectional coupler connected to a signal path of an antenna; determining an antenna impedance matching parameter corresponding to the determined approximate reflection coefficient by using a lookup table; and performing antenna impedance matching based on the antenna impedance matching parameter.

Abstract: Provided is an X-ray tube which includes a first electrode, a second electrode spaced apart from the first electrode, a target disposed in a lower portion of the second electrode, an emitter on the first electrode, a third electrode which is positioned between the first electrode and the second electrode and includes an opening at a position perpendicularly corresponding to the emitter, and a spacer provided on the third electrode and surrounding the second electrode. The spacer includes a first section located adjacent to the third electrode and a second section disposed on the first section. The spacer includes a ceramic insulator and conductive dopants dispersed within the ceramic insulator. A concentration of the conductive dopants in the first section of the spacer is greater than a concentration of the conductive dopants in the second section. The third electrode is in contact with the first section of the spacer.

Abstract: Disclosed are: a system comprising a gas circulation device capable of circulating hyperthermic gas in the peritoneal cavity and a temperature control device; and a system comprising a drug spray device for effectively spraying a drug in the peritoneal cavity together with gas. The systems of the present invention are used as systems for hyperthermic intraperitoneal chemotherapy and can maximize the anticancer therapy effect by more effectively delivering a small amount of an anticancer drug to cancer cells while maintaining the temperature of gas in the peritoneal cavity at a predetermined temperature.

Abstract: Provided is an antistatic powder coating composition, which includes single-walled carbon nanotubes (SWCNTs) having specific physical properties as a conductive additive, thereby providing an environmentally friendly coating exhibiting excellent coating workability and constantly demonstrating stable surface resistance, irrespective of the thickness of a film.

Abstract: Provided is an X-ray tube. The X-ray tube includes a cathode electrode, an anode electrode vertically spaced apart from the cathode electrode, an emitter on the cathode electrode, a gate electrode disposed between the cathode electrode and the anode electrode, the gate electrode including an opening at a position corresponding to the emitter, and a spacer provided between the gate electrode and the anode electrode. The spacer includes an insulator and conductive dopants doped in the insulator.

Abstract: Provided is a method for manufacturing an electric field emission device. The method for manufacturing the electric field emission device includes winding a carbon nanotube yarn around outer circumferential surfaces of a metal plate in a first direction, pressing both side surfaces of the metal plate through a pair of metal structures, wherein a top surface of the metal plate is exposed from the metal structures, and an area of the top surface of the metal plate is less than that of each of both the side surfaces of the metal plate, and cutting the carbon nanotube yarn at an edge portion of the top surface of the metal plate in the first direction to form a plurality of emitters.

Abstract: An embodiment of the present invention provides an anode active material for a lithium secondary battery which is a porous silicon-carbon-based composite in which a plurality of nano-silicon particles are embedded in a carbon-based material, the composite having a plurality of pores, wherein the carbon-based material comprises graphite particles, soft carbon, hard carbon, or a combination thereof, and the soft carbon, in the carbon-based material, is in the form of a carbon layer.