Abstract: A software-defined network (SDN) controller and its method for authenticating switches through encryption of the switches' identifiers. The authenticating method may include obtaining a data path identifier (DPID)-based authentication code, authenticating a received and encrypted session key by using the DPID-based authentication code, determining the presence of another switch having an identical DPID as that of the authenticated switch, and adding a modifier to the DPID and storing the modified DPID if indeed there is another switch with an identical DPID present.

Abstract: Provided is a paint composition for a two-step curing process including a binder resin containing a hydroxyl group and a hardener having a functional group reactable with the hydroxyl group. The paint composition includes: one or more binder resins selected from the group consisting of a polyester resin, an alkyd resin, an acryl resin, and a modified resin thereof; and a hardener including one or more selected from an isocyanate group and one or more selected from a melamine group, wherein mechanical processing is performed on a steel sheet coated with the composition and primarily cured, and then mechanical and chemical properties of a coating layer damaged during the mechanical processing are recovered through secondary curing.

Abstract: A method and apparatus for link discovery among domains, the method including receiving a link discovery packet from a second switch in a second domain, generating a response packet with respect to the link discovery packet, and transmitting the response packet to the second switch, wherein the link discovery packet is generated by a transmission controller to control the first domain in order to detect a link between the second switch and the first switch in a first domain.

Abstract: An apparatus and method for 3D seismic exploration for use in a small ship. The apparatus includes a seismic source towed by the small ship from a rear side thereof, a pair of support rods connected to the rear side and horizontally arranged in two rows behind the seismic source in the direction extending from a sailing direction of the ship, and a plurality of streamers arranged between the support rods in the sailing direction of the ship.

Abstract: Provided a rotation assembly including: a base unit; a rotation frame unit rotatably installed on the base unit; a rotation driving unit which drives the rotation unit to rotate; an encoder including a hollow axis installed on the base unit and an encoder main body installed on the rotation frame unit; and a slip ring installed on the base unit, wherein a portion of the slip ring or a portion of a cable connected to the slip ring is disposed in a through hole provided in the hollow axis.

Abstract: An apparatus and method for 3D seismic exploration for use in a small ship. The apparatus includes a seismic source towed by the small ship from a rear side thereof, a pair of support rods connected to the rear side and horizontally arranged in two rows behind the seismic source in the direction extending from a sailing direction of the ship, and a plurality of streamers arranged between the support rods in the sailing direction of the ship.

Abstract: A method for providing a protection switching service in a virtual tenant network (VTN) and a controller are provided. The method enables a real-time protection switching setup on a VTN path in order to provide reliability of a VTN service.

Abstract: There is provided a light emitting diode (LED) lens for double-sided lighting, including a light diffusion agent diffused therein, the LED lens including a light receiving portion receiving light, a first light transmitting portion corresponding to the light receiving portion and transmitting a portion of the light in an upward direction therefrom, a reflective portion extended from the first light transmitting portion and reflecting a portion of the light, and a second light transmitting portion facing the first light transmitting portion and transmitting the light reflected by the reflective portion in a downward direction therefrom.

Abstract: A method and apparatus for processing an address resolution protocol (ARP) packet that searches, with respect to an ARP packet received from an end system, for a media access control (MAC) address of another end system indicated by the received ARP packet, transmits a proxy response packet to the end system that transmits an ARP packet using the found MAC address, and thus reduces an overload of a Layer 3 (L3) network through the proxy response packet being transmitted to the end system that transmits the ARP packet is provided.

Abstract: Provided is an operating method of a database server in a Virtual eXtensible Local Area Network (VXLAN) system including a network administrator, the database server, a switch and at least one end system. The database server may maintain a table including information about a network profile and information about a service profile, receive, from the switch, a request for information on a virtual station interface (VSI) type corresponding to a request message for setting up and canceling a VXLAN service that the switch receives from the at least one end system, retrieve a network property corresponding to the VSI type from the table in response to the request, and provide the retrieved network property to the switch.

Abstract: Disclosed herein is a hydraulic control device using a hydraulic actuator. The apparatus includes a hydraulic actuator (110) having a clearance pocket (112), an oil supply line (SL) and an oil discharge line (DL) connected to the hydraulic actuator, a pilot valves (130) provided on each of the oil supply line and the oil discharge line, and a accumulator (140) supplying additional oil to the hydraulic actuator. The hydraulic control device facilitates hydraulic control and makes it possible to control the hydraulic pressure more efficiently and appropriately.

Abstract: There is provided a light emitting diode (LED) lens for double-sided lighting, including a light diffusion agent diffused therein, the LED lens including a light receiving portion receiving light, a first light transmitting portion corresponding to the light receiving portion and transmitting a portion of the light in an upward direction therefrom, a reflective portion extended from the first light transmitting portion and reflecting a portion of the light, and a second light transmitting portion facing the first light transmitting portion and transmitting the light reflected by the reflective portion in a downward direction therefrom.

Abstract: Disclosed are an encryption and authentication-based network management method and apparatus. A network management method according to an embodiment of the present invention includes: generating a public key and a private key for encryption and decryption of network attribute information to be used by a virtual machine positioned in the network server to provide the generated public key to a database; receiving network attribute information encrypted by the database with the public key from the database; and decrypting the received network attribute information with the private key to authenticate the network attribute information.

Abstract: Disclosed herein is a flexible short pipe having a shock absorbing function. The flexible short pipe has flexibility so as to absorb shocks generated in the longitudinal direction of a lifting pipe (or flexible pipe) and have resistance to a bending load or a torsional load when being wound around a roller. The flexible short pipe includes flanges provided at upper and lower ends thereof to be coupled to a unit lifting pipe or flexible pipe. An inner layer has a curved shape and is provided between the upper and lower flanges to allow slurry, lifted up or discharged by a lifting pump, to flow along the inner layer. An outer layer has a curved shape and surrounds the inner layer. A shock absorbing means is positioned between the inner layer and the outer layer, and absorbs longitudinal force and bending force.

Abstract: A polypeptide, designated as “Streptococcus uberis Adhesion Molecule” (SUAM), and fragments of SUAM, prevent internalization and adherence of Streptococcus uberis and other streptococcal pathogens to cells. The SUAM polypeptide and fragments may be used diagnostically and therapeutically. Nucleic acid sequences encoding the SUAM polypeptide and fragments are included in the invention.

Abstract: Provided a rotation assembly including: a base unit; a rotation frame unit rotatably installed on the base unit; a rotation driving unit which drives the rotation unit to rotate; an encoder including a hollow axis installed on the base unit and an encoder main body installed on the rotation frame unit; and a slip ring installed on the base unit, wherein a portion of the slip ring or a portion of a cable connected to the slip ring is disposed in a through hole provided in the hollow axis.

Abstract: Provided is a paint composition for a two-step curing process including a binder resin containing a hydroxyl group and a hardener having a functional group reactable with the hydroxyl group. The paint composition includes: one or more binder resins selected from the group consisting of a polyester resin, an alkyd resin, an acryl resin, and a modified resin thereof; and a hardener including one or more selected from an isocyanate group and one or more selected from a melamine group, wherein mechanical processing is performed on a steel sheet coated with the composition and primarily cured, and then mechanical and chemical properties of a coating layer damaged during the mechanical processing are recovered through secondary curing.

Abstract: Provided are a polymer capsule in which an organic corrosion inhibitor is encapsulated, a method of preparing the same, a composition having the same, and a steel sheet whose surface is treated using the same. The polymer capsule prepared to include a core layer polymer having a hydrophilic acid group and at least one shell layer surrounding the core layer through continuous emulsion polymerization may have an organic corrosion inhibitor effectively encapsulated. The corrosion inhibitor may be released from the capsule in a corrosive environment, thereby enhancing corrosion resistance of the steel sheet.

Abstract: Disclosed is a touch recognition method for preventing an execution of a function associated with an icon by unintentionally touching the icon when a slide-type mobile terminal performs a sliding motion and a mobile terminal implementing such method. If a pre-command is inputted by a touch through the touch screen of the mobile terminal, a pre-command operation that is predetermined is performed. If a sliding motion is detected while the pre-command is performed, the pre-command operation is cancelled.