baber/WOPTO huggingface dataset:
Patent KR-102513500-B1 (KR)
Title: 약원료 혼합장치
IPC: B01F23/60
Filed: 2021-01-12
Granted: 2023-03-23
Abstract: 본 발명은 약원료의 혼합 및 이송을 자동으로 수행하기 위한 것으로, 본 발명의 약원료 혼합 장치는 수직방향의 지주프레임; 상기 지주프레임을 감싸는 프레임 커버; 약원료를 수용 및 혼합하기 위한 용기를 지지하는 무빙암; 수평방향의 회전축을 기준으로 상기 무빙암을 회전시키는 무빙암 구동부; 상기 무빙암 및 상기 무빙암 구동부를 상기 프레임 커버의 전면에서 상하방향으로 이동시키는 리프트; 베이스의 상부에 고정결합되고, 상기 지주프레임이 수직방향의 회전축을 기준으로 회전 가능하도록 상기 지주프레임의 하단을 지지하는 랙기어; 상기 랙기어와 맞물려 회전하도록 구성된 피니언; 상기 랙기어의 둘레를 돌도록 상기 피니언을 회전시키고, 상기 지주프레임과 결합되어 상기 지주프레임과 함께 회전하는 피니언 구동부를 포함한다.
Patent KR-102242207-B1 (KR)
Inventor: PARK TAE SUNG
IPC: B65H29/18
Filed: 2021-01-15
Granted: 2021-04-19
Abstract: Disclosed is a mask stack device including a pusher transferring a mask bundle. According to one embodiment of the present invention, the mask stack device includes: an individual transfer unit (100) transferring a manufactured mask (1); a stack unit (200) connected with the individual transfer unit (100), stacking the mask transferred through the individual transfer unit (100) as a bundle, and transferring the stacked bundle to a lower side; and a pusher (400) pushing and transferring the bundle transferred to the lower side by the stack unit (200). The stack unit (200) includes: a first stack unit (201) in which a plurality of first stackers; and a second stack unit (202) in which a plurality of second stackers. The first stack unit (201) and the second stack unit (202) are placed opposite each other with respect to a progressing direction of the mask, and the first stack unit (201) and the second stack unit (202) are placed opposite each other with respect to a progressing direction of the mask. The stack unit also includes: a first supporter placed on the first stackers (260), and protruding to the second stack unit (202); and a second supporter placed on the second stackers (270), and protruding to the second stack unit (201). The first and second supporters form a supporter separation distance (267) with respect to a horizontal direction, and, when seen from the front side, the pusher (400) can be placed at the supporter separation distance (267).
Patent KR-102297274-B1 (KR)
Title: Cargo transport vehicle having ejector device
Inventor: OH DONG HYUN
IPC: B60P1/00
Filed: 2021-01-19
Granted: 2021-09-01
Abstract: The present invention relates to a cargo transportation vehicle having an ejector device, which is realized to easily discharge a loaded object loaded on a loading box of a cargo vehicle without a remaining amount without a dump of the loading box. The cargo transportation vehicle comprises a loading unit where the loading object is loaded.
Patent KR-102301707-B1 (KR)
Title: Earthquake-proof lighting implement mounting structure
Inventor: KIM SEUNG KWAN
IPC: E04B9/00
Filed: 2021-01-19
Granted: 2021-09-10
Abstract: The present invention relates to an earthquake-proof lighting lamp mounting structure. The earthquake-proof lighting lamp mounting structure comprises: a shaft support bracket (20) installed on a rear surface of a lighting lamp (10); a gear fixing bracket (30) installed on the rear surface of the lighting lamp (10); a shaft (40) rotatably coupled to the shaft support bracket (20) and the gear fixing bracket (30); a fixed support gear (50); a fixed support jaw (52) installed on the fixed support gear (50); a rotation gear (60) fixed to an outer circumferential surface of the shaft (40); a rotation support jaw (62) installed on the rotation gear (60); a gear coupling actuating spring (70) supported on the shaft support bracket (20); and a gear movement guide spring (30SP) installed in the gear fixing bracket (30). Therefore, the earthquake-proof lighting lamp mounting structure can quickly and conveniently mount a lighting lamp at a desired position under a building slab.
Patent KR-102469053-B1 (KR)
Title: 실시간 미생물 종판별 장치
IPC: G01N21/64
Filed: 2021-02-02
Granted: 2022-11-22
Abstract: 본 발명에 의한 실시간 미생물 종판별 장치는, 정원경의 일부와 타원경의 일부가 상호 결합되는 이종챔버를 지지하는 챔버 케이싱; 상기 챔버케이싱에 부분적으로 결합되며, 공기 중 에어로졸 입자가 샘플링되어 포집되는 스트랩필터(strap filter)와, 상기 스트랩필터에 특정 항체를 노출시켜 항원항체 반응을 유도하여 상기 이종챔버로 출입시키는 포집에어 샘플러; 상기 챔버 케이싱의 일측에 연결되어 상기 이종챔버에 입력광원을 송출하는 UV 광원부; 및 상기 이종챔버로부터 사출되는 형광(Fluorescence Light)을 검출하는 형광 수광부A 및 형광 수광부B를 포함할 수 있다. 
본 발명에 의한 실시간 미생물 종판별 장치는, 액상이 아닌 피검사자에 노출된 공기를 포집하되 필요에 따라 적어도 수회 이상 샘플링하여 산란 및 굴절되는 형광 파장을 수광하여 신속, 정확한 종판별을 할 수 있고 1회성이 아닌 연속적인 판별이 가능하여 판별 신뢰도가 향상될 수 있다.
Patent KR-102253616-B1 (KR)
Title: Line entry and recycling device of pipeline type underground distribution line
Inventor: SONG YOUNG BOK
IPC: H02G11/02
Filed: 2021-02-03
Granted: 2021-05-17
Abstract: Provided is a technology for efficiently installing/recovering distribution lines buried underground on a pipeline, recycling both of the cable and the combined sheath gripping the cable, and effectively monitoring environments inside the pipeline. A line entry and recycling device of a pipeline type underground distribution line according to one embodiment of the present invention includes: a cable processing unit supplied with a plurality of cables from a plurality of cable rolls, and configured to form an integrated distribution line by wrapping the cables with a combined sheath; a first transfer unit installed in the inlet as an open part of one end of the pipeline to provide an inflow force to the distribution line into the pipeline; a second transfer unit installed between the cable processing unit and the first transfer unit to provide a first transfer path of the distribution line between the cable processing unit and the first transfer unit; and a transfer robot that includes a body to which a section of the distribution line is inserted and fixed to be detached from the distribution line at the front end of the distribution line, and a moving module including a plurality of driving wheels installed on the outer surface of the body and rotated in contact with the inner surface of the pipeline for movement of the body, and a driving unit for providing a driving force to the driving wheels, and moves along the inside of the pipeline to install the distribution line along the pipeline.
Patent KR-102304631-B1 (KR)
Title: Outdoor front retractable light panel
Inventor: LU HYUN JA
IPC: G09F9/33
Filed: 2021-02-05
Granted: 2021-09-23
Abstract: The present invention relates to a front retractable electric signboard for outdoor use and, more specifically, to a front retractable electric signboard for outdoor use that an LED board can be opened and closed to facilitate the maintenance and repair of the electric signboard. Provided can be the front retractable electric signboard for outdoor use, which is an outdoor electric signboard installed on the outer wall of a building, comprising: an LED module having a plurality of LED chips arranged on a front surface and including a controller connected to the LED chips on a rear surface to emit light with the color and brightness of the LED chips adjusted; an LED board having a plurality of LED modules arranged in the shape of a matrix and fixed to the front surface; and a fixing board combined with the LED board and fixing the LED board to the outer wall of the building, wherein the LED board is combined with one side of the fixing board to be able to rotate, thereby opening and closing the front of the fixing board.
Patent KR-102523191-B1 (KR)
IPC: G01N33/543
Filed: 2021-02-17
Granted: 2023-04-18
Abstract: 바이오 물질에 대한 결합 표면을 제공하는 섬유집합체 제조방법이 제공된다. 본 발명의 일 실시예에 의한 바이오 물질에 대한 결합 표면을 제공하는 섬유집합체는 (1) 다수 개의 섬유들이 축적된 섬유집합체를 준비하는 단계 및 (2) 바이오 물질에 구비된 아민기와 반응할 수 있는 카르복시기가 섬유 표면 상에 구비되도록 개질시키는 단계를 포함하여 제조된다. 이에 의하면, 섬유집합체로 바이오 물질을 용이하고 높은 함량으로 도입시킬 수 있다. 또한, 바이오 물질의 도입과정에서 바이오 물질 간 콘쥬게이트 되거나 물리적인 흡착 등으로 부착되는 바이오 물질을 현저히 감소시킴으로써 바이오 물질을 이용한 어플리케이션에서 높은 정밀도 및 신뢰도로 바이오 물질을 이용가능하다. 또한, 바이오 물질의 탈리가 최소화 또는 방지됨에 따라서 바이오 물질을 이용한 어플리케이션에서 바이오 물질에 기인한 특성 변동을 최소화할 수 있다. 이에 따라서 본 발명에 의한 섬유집합체 표면에 고정된 바이오물질은 재료공학, 생명공학, 의학 등 각종 분야에 다양한 어플리케이션으로 응용될 수 있다.
Patent KR-102406851-B1 (KR)
Inventor: JOO YOUNG HOON
IPC: F03D7/04
Filed: 2021-02-18
Granted: 2022-06-10
Abstract: 본 발명에 따른, 풍력 발전 단지(WF)의 전력 조정 최적화 방법은, 상기 풍력 발전 단지의 출력 전력과 연관되는, 상기 복수의 풍력 터빈(WT)들에 대한 파라미터를 수집하는 단계; 상기 복수의 WT들 상호간에 작용하는 웨이크 영향을 수치적으로 나타내는 웨이크 가중 계수 행렬과, 상기 WT를 노드로, 상기 WT들 상호간에 작용하는 웨이크 영향을 방향 선으로 나타내는 웨이크 방향 그래프를 생성하는 단계; 웨이크 가중 계수에 기초하여 정의되는 임계치를 이용하여, 상기 웨이크 가중 계수 행렬 및 웨이크 방향 그래프에 대한 가지치기(pruning) 프로세스를 수행하는 단계; 상기 가지치기 프로세스가 완료된 웨이크 가중 계수 행렬 및 웨이크 방향 그래프를 기초로 상기 복수의 WT들을 클러스트링하여 복수의 서브 셋들로 분류하는 단계; 상기 서브 셋 분류 결과에 기초하여 상기 복수의 WT들에 적용되는 희소 통신 아키텍처를 결정하는 단계; 및 상기 결정된 희소 통신 아키텍처에 대응되는 기정의된 전력 조정 최적화 알고리즘을 적용하여, 각 WT의 요각도 및 축 계수를 조정할 수 있는 전력 조정 최적화 솔루션을 생성하는 단계;를 포함한다.
Patent KR-102293592-B1 (KR)
Title: Skin external composition comprising extract of Martensia jejuensis and functional food comprising extract of Martensia jejuensis
Inventor: KIM HAN YOUNG
IPC: A23L33/105
Filed: 2021-03-02
Granted: 2021-08-26
Abstract: The present invention relates to a skin external composition and functional food comprising an extract of Martensia jejuensis as an active ingredient. Provided are the skin external composition and functional food composition that improve skin barrier functions by inhibiting only harmful bacteria without inhibiting symbiotic beneficial bacteria.
Patent KR-102253332-B1 (KR)
Title: Valve having 3d wave flow type separating trim-stack
Inventor: AN YOUNGTAE
IPC: F16K47/08
Filed: 2021-03-09
Granted: 2021-05-20
Abstract: The present invention relates to a separable trim stack unit for a valve, comprising: a guide groove unit which is an assembly unit and which slides and accommodates and guides a protruding bump formed to protrude on an upper side surface of a lower plate placed on a lower side among a pair of plates piled up on each other to come in contact with each other on a surface, an assembly bump formed on an upper side in an axial direction of the protruding bump in a greater size than the cross-sectional area of the protruding bump, and a protruding bump formed on a lower side surface of an upper plate which is placed on an upper side by being indented and corresponding; a hanging groove unit extended from the guide groove unit toward an inner side of the upper plate to be broader than an inner area of the guide groove unit and to slide and accommodate and guide the corresponding assembly bump; and sealing bars placed between both side surfaces of the protruding bump and both side surfaces inside the guide groove unit for sealing when the assembly bump slides and is inserted into the corresponding hanging groove unit. The present invention is able to, unlike the conventional technologies, configure a cage of a trim stack unit, which reduces the pressure in a valve and guides a flow of a fluid, by piling up a plurality of plates, assemble adjacent plates by sliding them from the sides, improve assembly properties, and temporarily weld an outer side surface of the piled and assembled plates, thereby firmly fix the plates.
Patent KR-102288482-B1 (KR)
Title: Small mobile home and camping caravan combined with small mobile home
Inventor: KIM JONG BURM
IPC: E04B1/343
Filed: 2021-03-18
Granted: 2021-08-10
Abstract: The present invention relates to a small mobile home and a caravan combined with the same, comprising: a caravan combination part configured so that one end can be inserted into and penetrate the outside circumference surface of a through hole, which is formed on the side wall of the small mobile home, and the other end can adhere closely to the outside circumference surface of the entrance of the caravan; an air supply means connected to the caravan combination part and supplying compressed air to the caravan combination part or inhaling the supplied compressed air; a first connection member connected to a sewage tank, water facilities and electric facilities included in the small mobile home, and configured to be withdrawn from the side wall; a sealing bracket configured on the outside circumference surface of the entrance of the caravan and having the other end of the caravan combination part combined therewith to be able to be separated; and a second connection member configured on the outside panel of the caravan, connected respectively to the sewage tank, a water tank and a battery included in the caravan, and combined with the first connection member.
Patent KR-102440147-B1 (KR)
Title: LED radiant heat circuit board for enhancing radiant heat, and manufacturing method therewith
Inventor: LEE KI BONG
IPC: F21Y115/10
Filed: 2021-03-24
Granted: 2022-09-02
Abstract: The present invention relates to an LED heat dissipation circuit board and a manufacturing method thereof. In the LED heat dissipation circuit board, grid grooves are formed on a lower surface of a circuit board main body, a heat radiating composition having high thermal conductivity is filled with the gid grooves and then dried and sintered to form a heat radiating layer inside the grid grooves such that the LED heat dissipation circuit board can be simply manufactured and maximize heat dissipation efficiency compared to the same volume. In addition, in the LED heat dissipation circuit board, via holes are formed on an upper surface and the lower surface of the circuit board main body located on a direct lower part of each LED module, and at the same time, a connection layer is inserted into the via holes to further improve a heat dissipation rate and a heat dissipation area such that more effective heat dissipation can be achieved. In addition, a heat dissipation layer is formed by coating a second heat dissipation composition on the lower surface of the circuit board main body to further increase the heat exchange area and further improve the heat dissipation effect and optimize the components and contents of the heat dissipation composition such that the heat dissipation efficiency can be further increased.
Patent KR-102361503-B1 (KR)
Inventor: JONG HO BAEK
IPC: A01M29/32
Filed: 2021-03-29
Granted: 2022-02-14
Abstract: The present invention a system for prevention of electric short circuit in an apartment, which includes: a short circuit prevention device for preventing occurrence of electrical accidents by limiting the access of birds to a telephone pole; and an inspection device installed on the telephone pole to prevent the access of birds and configured to perform management of electrical structures on the telephone pole, wherein the short circuit prevention device is fastened and fixed to a main wall of the telephone pole and includes: a fastening band (1, 1'); a magpie house construction barrier bar connector fixing nut (10, 10') fixed to the fastening band (1, 1'); a connecting member (20, 20') provided on an inside thereof with a threaded portion (21, 21') threaded into the connector fixing nut (10, 10') and on an outside thereof with an elastic member connecting portion (22, 22') in which an elastic member fixing hole (23, 23') is perforated; and an elastic member (30, 30') provided with a coil spring at the connecting portion (22, 22') of the connecting member (20, 20') and formed by bending fixed fitting portions (31, 31') on the inner and outer sides, respectively. Thus, birds are not allowed to settle thereon.
Patent KR-102270858-B1 (KR)
Title: CCTV Camera System for Tracking Object
Inventor: KIM DONG HYUN
IPC: G06T7/292
Filed: 2021-04-08
Granted: 2021-06-29
Abstract: According to the present invention, provided is a CCTV camera system, which includes: reference and related cameras each imaging different areas; an image storage unit storing images of the reference and related cameras; an object information acquisition unit connected to the image storage unit, detecting an object included in the image, and acquiring characteristic information of a dynamic object; and an object information processing unit calculating a relation between the dynamic object captured by the reference camera and the related camera from the acquired characteristic information of the object.
Patent KR-102309155-B1 (KR)
Title: Healthy well-being stacked laver snacks containing blackfish with very high customer satisfaction
Inventor: AN SANG JIK
IPC: A23G3/36
Filed: 2021-04-14
Granted: 2021-10-08
Abstract: The present invention relates to a stacked laver snack which is health well-being product with very high consumer satisfaction capable of reducing a risk of acidification and extending an expiration date because of being not fried in oil, strengthening nutrients which are lacking in laver, and providing an excellent taste without a fishy taste without using oil. After mixing salt and a second fermentation product, which is manufactured by fermenting mushroom powder and mixing a porous ceramic carrier containing fermentation strains in a first fermentation product, at a weight ratio of 0.1: 10 to 1: 1, a ramie water bottle dried in a mixing product places laver at the bottom, evenly sprinkles dried whitebaits, places laver thereon, bakes the same by using a heat press, and cuts the same into a bite size by using the salt which is manufactured by spraying and drying a concentrated liquid after extracting a solvent as water at 90-100℃ for 2-4 hours in a mixture which mixes chard and sedum kamtschaticumat the same weight ratio.
Patent KR-102332060-B1 (KR)
Title: Electric vehicle charging agency system
Inventor: KIM EUNG SOCK
IPC: G06Q50/30
Filed: 2021-04-15
Granted: 2021-12-01
Abstract: According to an embodiment, provided is an electric vehicle charging agency system comprising: a service request reception part that receives a service request including a location of an electric vehicle, a type of the electric vehicle, and a desired date and time for charging the electric vehicle from a customer terminal; a service request processing part that performs a parking lot reservation process that can be charged according to the service request and an agency agent designation process for charging and delivery; and a service information provision part that transmits the parking lot information reserved according to the parking lot reservation process and the agency agent information designated according to the agency agent designation process to the customer terminal. Therefore, the present invention is capable of allowing charging of the electric vehicle to be performed according to the desired schedule of a customer.
Patent KR-102456845-B1 (KR)
Title: 이중 빔 포밍에 기반한 간섭 완화 장치 및 방법
IPC: H04B7/06
Filed: 2021-04-19
Granted: 2022-10-21
Abstract: 본 발명의 이중 빔 포밍에 기반한 간섭 완화 장치는, 주파수 공유형 위성 및 셀룰러 네트워크에서 이중 빔 포밍에 기반한 간섭 완화를 위한 장치에 있어서, 프로세서(processor) 및 프로세서를 통해 실행되는 적어도 하나의 명령이 저장된 메모리(memory)를 포함하고, 상기 적어도 하나의 명령은 상기 프로세서가, 모든 셀룰러 기지국에게 초기 간섭 임계치로 동일한 간섭량을 설정하는 단계(a), MRT 빔포밍 벡터로 인해 발생하는 간섭량이 초기 간섭 임계치 이상인 기지국들의 집합을 선정하는 단계(b), 상기 기지국들의 집합에 포함된 기지국들부터 네트워크 전체 잔여 허용 간섭량을 구하여 해당 기지국들의 간섭량 조건을 낮추는 단계(c), 상기 기지국들의 집합에 포함되지 않은 나머지 기지국들의 집합에 포함된 기지국들에게 네트워크 전체 잔여 허용 간섭량의 값을 동일하게 분배하여 간섭 임계값을 부여하는 단계(d), 및 각각의 셀룰러 기지국에 대해서 재설정된 허용 간섭량을 고려하여 잔여 허용 간섭량이 없을 때까지 상기 단계(b) 및 단계(d)를 반복하는 단계(e)를 수행하도록 구성된다.
Patent KR-102309472-B1 (KR)
Title: Air flow rotary multi-stage chemical liquid cleaning device
Inventor: YOON YOUNG HO
IPC: F23G7/10
Filed: 2021-04-21
Granted: 2021-10-06
Abstract: According to the present invention, an air current-rotating multi-stage chemical solution cleaning device comprises: a suction module sucking biological combustion gas; a first cleaning module including a vortex unit of a Venturi pipe shape connected to the suction module to arrange a partial area thereof in circulating water to form a rotating air current while the introduced biological combustion gas is immersed in the circulating water, a first spray nozzle arranged in the vortex unit to spray a chemical solution toward the biological combustion gas to remove fine dust in the biological combustion gas scattered by a rotating air current, and a first gas-liquid separator installed on an upper portion of the vortex unit to separate drops from the biological combustion gas treated with the chemical solution; a second cleaning module including a primary filling layer allowing the biological combustion gas supplied from the first cleaning module to pass therethrough to primarily treat bad smells, a second spray nozzle spraying a chemical solution toward the primary filling layer, and a second gas-liquid separator separating the drops from the biological combustion gas passing through the primary filling layer; and a third cleaning module including a secondary filling layer allowing the biological combustion gas supplied from the second cleaning module to pass therethrough to secondarily treat bad smells, a third spray nozzle spraying a chemical solution toward the secondary filling layer, and a third gas-liquid separator separating the drops from the biological combustion gas passing through the secondary filling layer. Accordingly, an air current rotating type for increasing residence time while minimizing pressure loss is applied to the air current-rotating multi-stage chemical solution cleaning device to effectively dispose of bad smells and fine dust created by biological combustion.
Patent KR-102311164-B1 (KR)
Title: Magazine Cover
Inventor: PARK JUNG SOO
IPC: F41A9/65
Filed: 2021-04-21
Granted: 2021-10-08
Abstract: The present invention relates to a magazine protection cover. More specifically, the magazine protection cover includes: a cover part (10) surrounding an upper part of a magazine (M); a guide groove (20) formed on the inside of the cover part (10) and engaged with a guideline of the magazine (M); a protruding part (11) formed on the outside of the cover part (10) to assist the cover part such that the cover part can be quickly attached and detached; and a feed protector (30) located on the inside of the cover part (10) and having a curved surface to prevent the deformation of a feed lip of the magazine. Therefore, the magazine protection cover is capable of preventing a shock applied to the feed lip of the magazine and foreign substances such as dust, moisture and the like from flowing from an external environment into the magazine, while securing high reliability with a simple structure, which can lead to an extension of the magazine's lifespan.
Patent KR-102387847-B1 (KR)
Inventor: BANG YOUNG HYEOK
IPC: F16K1/226
Filed: 2021-04-21
Granted: 2022-04-18
Abstract: The present invention provides a butterfly valve for opening and closing a flow path, which comprises: a main body unit forming a flow path through which a fluid moves; an opening/closing unit provided inside the main body unit to open and close the flow path while rotating; and a sealing unit provided on an inner surface of the main body unit and an outer peripheral surface of the opening/closing unit, respectively, to prevent the fluid from moving into a gap between the main body unit and the opening/closing unit while the opening/closing unit is rotated to close the flow path. Accordingly, there is the effect of securing watertightness and maintaining durability.
Patent KR-102393383-B1 (KR)
IPC: G02B13/18
Filed: 2021-04-26
Granted: 2022-05-02
Abstract: 본 발명의 일 실시예에 따른 촬상 광학계는 물체측으로부터 순서대로, 부의 굴절력을 갖고, 물체측 면이 볼록하고 상측 면이 오목한 제1 렌즈; 정의 굴절력을 갖고, 물체측 면이 볼록한 제2 렌즈; 굴절력을 갖는 제3 렌즈; 굴절력을 갖는 제4 렌즈; 굴절력을 갖는 제5 렌즈; 및 굴절력을 갖는 제6 렌즈;를 포함하며, 상기 제1 렌즈 내지 상기 제6 렌즈를 포함하는 광학계의 화각을 FOV라 할 때, FOV > 85°를 만족할 수 있다.
Patent KR-102606918-B1 (KR)
IPC: G06Q50/08
Filed: 2021-04-28
Granted: 2023-11-29
Abstract: 본 발명은 사용자 개개인의 디자인 또는 인테리어적 취향을 안내하는 디자인 가이드 장치를 제공하기 위한 것으로, 사용자 입력을 수신하는 문진부, 사용자 입력에 기초하여, 기 분류된 복수의 디자인 컨셉 중 하나를 사용자 디자인 컨셉으로 결정하는 컨셉 분류부, 사용자 디자인 컨셉에 대응하는 아이템 종류, 아이템 배치 및 아이템 색상 중 적어도 하나를 가이드하는 컨셉 가이드부를 포함할 수 있다.