Abstract: Provided is a combustor assembly. The combust assembly includes: a plurality of swirlers through which a first fluid that is a part of a fluid discharged from a compressor passes; a base portion, in which the plurality of swirlers are provided, comprising a first through hole formed between one swirler and another swirler from among the plurality of swirlers so that a second fluid that is another part of the fluid discharged from the compressor and different from the first fluid passes through the first through hole; and a deflector provided in the base portion so as to face the first through hole for changing a moving direction of the second fluid.

Abstract: Graphene, a composition for preparing graphene, and a method of preparing graphene using the composition are disclosed.

Abstract: Provided is a camera system capable of detecting and tracking an object. The camera system includes: a camera configured to detect at least one object in a surveillance region of which an image is captured by the camera directed in a first direction and generate metadata of the object; and a camera controller configured to control at least one of panning, tilting and zooming of the camera based on the metadata of a target object selected from among the at least one object.

Abstract: Provided are an apparatus and method for processing data by detecting an event on an interrupt or polling basis according to data transmitting or receiving periods. The apparatus includes a buffer configured to store one or more wireless packets, a period determination unit configured to determine a period of transmitting or receiving the wireless packets, and a data processor configured to process data included in the wireless packets by detecting an event in a polling mode or an interrupt mode according to the period.

Abstract: A surveillance method includes: an interrupt processing operation of determining whether an interrupt is generated and determining a type of the interrupt; a type-1 interrupt processing operation of, in response to determining that the interrupt is a type-1 interrupt, determining whether an event has occurred, and, in response to determining that the event has occurred, sending an event occurrence alarm to an outside of the surveillance apparatus using a second communicator, which transmits or receives data at a second frequency, and sending an image, corresponding to the event, acquired by an image sensor to the outside using a first communicator, which transmits or receives data at a first frequency higher than the second frequency; and a type-2 interrupt processing operation of, in response to determining that the interrupt is a type-2 interrupt, controlling the surveillance apparatus according to control information included in the type-2 interrupt, wherein the type-1 interrupt is an interrupt generated a

Abstract: A method of selecting hopping target channels by a device except a wireless local area network device includes: selecting candidate channels having a received signal strength less than a set threshold signal strength from among channels included in an available frequency band; classifying the candidate channels into frequency regions based on a channel frequency of each of the candidate channels; and for each of the frequency regions, selecting at least one candidate channel included in a frequency region as a hopping target channel for the frequency region.

Abstract: Provided is a network security system including: a spatial information collector configured to acquire, from a manager input terminal, spatial information; a device position receiver configured to receive, from the manager terminal, at least one device installation position with respect to the spatial information and storing the at least one device installation position; a device recommender configured to provide a candidate device list corresponding to the at least one device installation position; a device determiner configured to receive a signal for selecting at least one device from the candidate device list, and determine a model of the at least one selected device to be installed at the at least one device installation position; and a device setter configured to set a setting of the at least one selected device.

Abstract: Provided is a turbine including a rotor; a blade provided on the rotor and comprising a cooling flow path through which a cooling fluid flows; and a shroud surrounding an exterior of the blade, wherein the blade includes: at least one rib turbulator protruding into the cooling flow path; and at least one subsidiary protrusion protruding from an outer surface of the at least one rib turbulator.

Abstract: Disclosed herein are an etching apparatus and method that are capable of performing an etching process in the state where a flexible film is wound around a drum-type jig, and a flexible film etched by the etching method. The etching apparatus includes a process tank containing an etchant therein, a drum-type jig rotatably provided in the process tank to be immersed into the etchant in a state where a flexible film on which a thin film is formed is wound around the drum-type jig, and a drum-type jig driver configured to rotate the drum-type jig. The etching apparatus has a compact structure to efficiently perform the etching process on the large area flexible film on which the thin film is formed.

Abstract: A system and method for providing surveillance data are provided. The system includes: a pattern learner configured to learn a time-based data pattern by analyzing at least one of image data of one or more images and sound data of sound obtained from a surveillance zone at a predetermined time or time period, and to generate an event model based on the time-based data pattern; and an event detector configured to detect at least one event by comparing the event model with a time-based data pattern of at least one of first image data of one or more first images and first sound data of first sound obtained from the surveillance zone.

Abstract: There is provided a gas turbine system including: a compressing portion; a combustor generating a combustion operation by using first compressed air coming from the compressing portion; a turbine portion generating power by using a combustion gas coming from the combustor; a heat recoverer recovering a heat from a discharge gas of the turbine portion; and a compressed air supplier providing second compressed air to which the heat recovered by the heat recoverer is transferred, wherein at least a portion of the second compressed air to which the heat has been transferred is supplied to at least one of the combustor and the turbine portion.

Abstract: A swirler assembly includes: a base plate having an opening at a center thereof; a plurality of vanes arranged on a first region of a surface of the base plate, the plurality of vanes being spaced apart from one another along a circumferential direction of the base plate; and a plurality of air injection holes arranged in a second region of the surface of the base plate, the second region located between the opening and the first region of the surface of the base plate in a radial direction of the base plate.

Abstract: A compressor control system includes a compressor compressing a fluid, an anti-surge valve preventing backflow in the compressor, the anti-surge valve being arranged on a line connecting an inlet and an outlet of the compressor and operated by a first signal, an inlet guide vane controlling an opening area of the inlet, the inlet guide vane being arranged at the inlet and operated by a second signal, and a controller connected to the anti-surge valve and the inlet guide vane and generating the first signal to control the anti-surge valve, a vane control signal to control the inlet guide vane, a pressure compensation signal to control the inlet guide vane to compensate for a change in pressure at the outlet of the compressor according to the first signal, and the second signal by combining the pressure compensation signal with the vane control signal.

Abstract: A method of providing a route based on surveillance zones includes: generating a total surveillance zone by displaying surveillance zones of surveillance devices on a map; if a first user requests a route, generating a route on the map based on the total surveillance zone; if an event occurs while the first user travels along the route, acquiring a surveillance image from at least one of the surveillance devices corresponding to a location at which the event occurs; and providing the surveillance image to a second user.

Abstract: A method of manufacturing graphene, the method including: preparing a carrier member on which the graphene is formed on one surface thereof; exposing the graphene to dopant vapor to dope the graphene; transferring the doped graphene onto a target member; and removing the carrier member.

Abstract: An inlet guide vane assembly is provided. The inlet guide vane assembly includes a housing, a rotating shaft rotatably located in the housing, a vane portion connected to the rotating shaft, a bushing portion located between the rotating shaft and the housing, and an elastic portion located between the bushing portion and the rotating shaft.

Abstract: A graphene sheet and a method of manufacturing the graphene sheet are provided. The method includes: growing a graphene sheet on a graphene growth support by applying carbon sources and heat to the graphene growth support, the graphene growth support including a carbonization catalyst; and forming at least one ripple on the graphene sheet by cooling at least one of the graphene growth support and the graphene sheet, wherein the graphene growth support and the graphene sheet have different thermal expansion coefficients.

Abstract: Provided is a camera. The camera further includes a motion area detection sensor that is configured to receive reflected wave signals by emitting radio frequency electromagnetic wave beam to each of divided areas set in a target capture region, determine whether motion has occurred in each of the divided areas depending on changes of reflection speed of each of the received reflected wave signals, generate motion information data based on the determination result, and input the motion information data into the controller. The controller is configured to compress a series of image frame data from the capturing unit according to the motion information data from the motion area detection sensor.

Abstract: An image monitoring system including a surveillance camera is provided. The surveillance camera includes: an image analyzer configured to analyze an input image; a sound source analyzer configured to analyze a sound source in the image or a sound source that is input separately; and a determiner configured to determine whether an abnormal image and an abnormal sound source exist, and when the abnormal image and the abnormal sound source are obtained, according to a result of the image analysis and the sound source analysis, to generate metadata and alarm information based on a result of the determination, wherein the abnormal image and the abnormal sound source are predefined.