baber/WOPTO huggingface dataset:
Patent KR-20140143416-A (KR)
Title: 천자 장치 및 그 제조 방법
Inventor: ARAMI Shunsuke
IPC: A61M37/00
Filed: 2013-04-02
Abstract: 소형화 및 경량화를 도모하는 것이 가능한 천자 장치 및 그 제조 방법을 제공한다.     천자 장치 (1) 는, 피부를 통하여 활성 성분을 체내로 이행시키기 위한 장치이다.     천자 장치 (1) 는, 통상의 케이싱 (H) 과, 케이싱 (H) 내에 슬라이드할 수 있게 배치된 피스톤 (P) 과, 케이싱 (H) 내에 배치됨과 함께 피스톤 (P) 에 탄성력을 부여하는 원추 코일 스프링 (40) 을 구비한다.     피스톤 (P) 은, 피스톤 본체 (20) 와, 피스톤 본체 (20) 에 걸어맞춰져 피스톤 본체 (20) 와 일체화된 마이크로 니들 부재 (30) 를 갖는다.     마이크로 니들 부재 (30) 는, 기판 (31) 과, 기판 (31) 의 표면에 돌출 형성된 복수의 마이크로 니들을 갖는다.
Patent KR-20150012247-A (KR)
Title: 컨텐츠를 제공하는 시스템
IPC: G01N27/62
Filed: 2013-04-25
Abstract: 센서(61)에 의해 얻어진 스펙트럼 데이터(ASD)를 포함하는 검색 요구에 대해, 스펙트럼 데이터(ASD)로부터 추정되는 상황 정보(Cx)에 관련지어진 컨텐츠(CC)를 제공하는 시스템(40)을 제공한다.  시스템(40)은, 복수의 상황 정보(Cx), 및 복수의 상황 정보(Cx)에 대해 각각 랭크매김된 복수의 저장된 스펙트럼 데이터(SSD)를 포함하는 데이터베이스(44)와, 얻어진 스펙트럼 데이터(ASD)에 대한 저장된 스펙트럼 데이터(SSD)의 스코어를 산출하는 대조 유닛(45a)과, 스코어 및 랭크가 높은 순으로 선택되도록, 상황 정보(Cx)에 관련지어진 컨텐츠(CC)를 출력하는 출력 유닛(46)을 가진다.
Patent KR-20150013857-A (KR)
Title: 수계 에멀젼을 위한 안정제로서의 친수성, 저 산함량 폴리머
IPC: C08L33/04
Filed: 2013-05-23
Abstract: 친수성 저 산함량 수지는 적어도 하나의 (메트)아크릴레이트, 및 적어도 하나의 (메트)아크릴산을 포함하는 혼합물의 중합 생성물을 포함하고, 여기서 상기 수지는 수용성이고; 및 상기 수지는 0 내지 약 120의 산가를 나타낸다.
Patent KR-20150017363-A (KR)
Title: 파이프 매설 구조체 및 그 제조 방법
IPC: C23C24/04
Filed: 2013-07-01
Abstract: 유로를 이루는 파이프와 금속 부재 사이의 밀착성을 향상시킨 파이프 매설 구조체 및 그 제조 방법을 제공한다.     파이프 매설 구조체 (1) 는, 횡단면에 있어서의 외주가 길이 방향의 양단을 만곡시킨 편평상을 이루는 금속 또는 합금제의 파이프 (10) 와, 길이 방향의 외주부 (10c) 를 맞닿게 하는 내벽을 갖고, 파이프 (10) 를 끼워 맞추는 오목부 (11a) 가 형성된 금속 또는 합금제의 기재 (11) 와, 오목부 (11a) 에 파이프 (10) 를 끼워 맞춘 상태에서, 금속 또는 합금으로 이루어지는 분말을 가스와 함께 가속하고, 파이프 (10) 및 기재 (11) 의 표면에 고상 상태인 채로 분사하여 분말을 퇴적시킴으로써 형성된 퇴적층 (12) 을 구비하고, 기재 (11) 의 표면으로부터 파이프 (10) 가 돌출되는 돌출량 (h) 과 단부 (10a, 10b) 에 있어서의 곡률 (R) 의 비율 h/R 이 0.25 이상 0.5 이하인 것을 특징으로 한다.
Patent KR-20160085013-A (KR)
Title: Server and method for relaying providing service of card information
Inventor: BAE BYUNG SOO
IPC: G06Q40/00
Filed: 2015-01-07
Abstract: The present invention relates to a server and a method for mediating in a card information providing service. The present invention provides a server for mediating in a card information providing service, comprising: a data storage unit which stores identification numbers of a plurality of financial companies; a communications interface unit which performs data transmission/reception with a communications terminal and at least one financial company servers; and a control unit which, when the communications interface unit receives a specific number composed of N digits from the communications interface unit, acknowledges whether two or more successive digits among the N digits included in the specific number are matched with an identification number of a specific financial company among the identification numbers of the financial companies, determines that the specific number is a card number of the specific financial company corresponding to the identification number of the specific financial company when the two or more successive digits are matched with the identification number of the specific financial company, and transmits the specific number to a specific financial company server, a server of the specific financial company, through the communications interface unit. According to the present invention, a card information page corresponding to a card number inputted by a communications terminal can be directly loaded from the communications terminal and displayed.
Patent KR-20150085788-A (KR)
Inventor: SUKA YUKI
IPC: C08G65/26
Filed: 2015-01-13
Abstract: The present invention provides a method for producing narrow molecular weight distribution polyalkylene glycol derivative having an amino group at a terminal whereby ethylene oxide is polymerized in a mild condition and diol polymer impurities can be inhibited from being generated. The method includes, at least, the steps of: polymerizing ethylene oxide by using a compound represented Formula (2); transforming a polymerization terminal into R3. (In Formula, R1 is a linear, branched, or cyclic monovalent hydrocarbon group having 1-10 carbon atoms; R2 is a linear or branched divalent hydrocarbon group having 1-5 carbon atoms; R3 is a linear, branched, or cyclic monovalent hydrocarbon group having 1-20 carbon atoms; M is sodium or potassium; m is an integer of 1-5; n is an integer of 1-450; and k is an integer of 1-5.).
Patent KR-20160091468-A (KR)
Inventor: LEE JOO YOUNG
IPC: H04N21/472
Filed: 2015-01-23
Abstract: The present invention relates to a method and an apparatus for editing a video section on a distributed file system, enabling to edit a video section while minimizing transfer of data on the distributed file system in which a compressed video file is divided and stored. According to one embodiment of the present invention, the method comprises the steps of: dividing input video into at least one segment; inserting a segment header including segment location and length information into one or more segments; storing the segments including the segment header in a distributed file system; requesting section editing including the information about the video section to be extracted; extracting a section according to comparison between the video section information and the segment header; and outputting the extracted section. According to one embodiment of the present invention, a video section editing function can be provided on the distributed file system.
Patent KR-20160091503-A (KR)
Inventor: PARK JONG HYUN
IPC: E01H5/10
Filed: 2015-01-23
Abstract: According to the present invention, a snow removing apparatus comprises: a first blower which suctions external air; a heating fan which heats air supplied by the first blower; a first diffuser and a second diffuser which spray air, supplied by the heating fan, to load with accumulated snow; a heat insulation cover which temporarily retains air, having sprayed to the first diffuser, by covering a surrounding area of the first diffuser; and a second blower which supplies air in the heat insulation cover to the second diffuser. The snow removing apparatus removes snow as the first diffuser passes again an area where the second diffuser has passed with a time gap. The present invention provides the snow removing apparatus which overcomes drawbacks of a hot air spraying type snow removing apparatus.
Patent KR-20160091104-A (KR)
Inventor: AHN DO YEOL
IPC: H04L9/08
Filed: 2015-01-23
Abstract: The present invention relates to a technology relating to a communication terminal and a server capable of performing quantum cryptography-based cryptographic communication, and more specifically, to a quantum cryptography-based cryptographic communication apparatus in a communication terminal and a server, to increase security of a mobile commerce-based proxy payment system, and a method thereof. The objective of the present invention is to generate a secret key through a quantum cryptography-based cryptographic communication between a communication terminal including an optical transmitting unit and a server including an optical receiving unit, and share the generated secret key with the communication terminal and the server to provide mobile commerce through user authentication.
Patent KR-20160093145-A (KR)
Inventor: KIM SUG HEE
IPC: G09B23/18
Filed: 2015-01-28
Abstract: The present invention relates to a bread board, a jumper line for the bread board and an educational kit, wherein the bread board comprises a metal layer which can be coupled to a magnet; an insulation layer which is located on the metal layer; and a plurality of conductive pads which are located on the insulation layer. A circuit connection state of the bread board can be intuitively found and a circuit can be easily configured by using the present invention.
Patent KR-20160095517-A (KR)
Title: Database for all cases of partially edentulous dental arches
Inventor: YANG HONG SO
IPC: A61C7/00
Filed: 2015-02-03
Abstract: The present invention relates to a method for reproducing all full mouth partial edentulous situations likely to occur by implementing all numbers of cases in a partial edentulous set of teeth without exception; sequentially writing 128 images of a set of teeth which are seventh power of two, the number of side partial edentulous cases of a symmetric dental arch to systematically implement the all numbers of cases; utilizing the 128 images of the set of teeth as an index ID; and matching left and right dental arch images 1:1.
Patent KR-20160101793-A (KR)
Inventor: KIL BYOUNG GU
IPC: B60K17/06
Filed: 2015-02-17
Abstract: The present invention relates to a transmission for an excavator. The transmission device according to the present invention comprises: a brake cylinder (210) which is elastically supported by an elastic member (212) in a casing to close a low-speed clutch (20) by pressurizing the low-speed clutch (20); a clutch cylinder (220) which is elastically supported by an elastic member (222) in the casing to close a high-speed clutch (30) by pressurizing the high-speed clutch (30); a brake piston (31) which supports the brake cylinder (210) with the elastic member (212) interposed therebetween; a high-speed flow path port (P10) which supplies oil to a first space (Rb) formed between the brake piston (310) and the clutch cylinder (220) to separate the clutch cylinder (220) from the high-speed clutch to open the high-speed clutch (30); and a low-speed flow path port (P20) which supplies oil to a second space (Ra) for separating the brake cylinder (210) from the low-speed clutch to open the low-speed clutch (20). In the low-speed state, the brake piston (31) directly pushes and moves the brake cylinder (210) to the low-speed clutch, and elastic dynamic stability generated while the elastic member (212) is compressed is applied to the brake cylinder (210).
Patent KR-20160104393-A (KR)
Inventor: OH SUK HWAN
IPC: B01D35/30
Filed: 2015-02-26
Abstract: A spring filter (100) connected to a pump of an embodiment of the present invention comprises: a filtering room casing (110) having an upper panel (113) formed on an upper side thereof, a lower panel (112) formed on a lower side thereof and having a lower penetration hole (112a) penetrating through a central portion thereof, and a filtered water discharge pipe (Po) penetrating one side of an outer circumference surface of an upper end unit; a compression spring (141) disposed on an upper lateral surface of the lower panel (112) in the filtering room casing (110); a compression spring support panel (142) disposed inside the filtering room casing (110) to be in contact with an upper end unit of the compression spring (141); and an operation handle axis (Hs) installed vertically on an upper lateral surface of the compression spring support panel (142) and having an upper end unit protruding outside the upper panel (113), and thus, ground water pumped through the lower penetration hole (112a) is filtered by passing through the gaps of the coils in the compression spring (141), which is in a compressed state, and discharged externally through the filtered water discharge pipe (Po). Thus, according to the spring filter connected to a pump and a filtering and backwashing method using the same, the spring filter of the present invention is directly connected to a pump outlet, and a filtering apparatus is configured at a height half of conventional filtering apparatuses and does not require a separate foundation work, thereby having effects of being inexpensive to produce and maintain and having a simplified washing and backwashing process.
Patent KR-20150035909-A (KR)
IPC: H01G2/06
Filed: 2015-03-04
Abstract: The present invention includes a ceramic body wherein multiple dielectric layers are staked on each other in the longitudinal direction; multiple capacitor units having different capacities, arranged at predetermined intervals, and having multiple first and second inner electrodes formed to be alternately exposed through both lateral surfaces of the ceramic body while interposing the dielectric layers; and multiple first and second outer electrodes arranged at predetermined intervals in the longitudinal direction of the ceramic body, formed on the both lateral sides of the ceramic body, and connected to the first and second inner electrodes of the multiple capacitor units. The present invention provides an array-type multi-layered ceramic electrode component that the number of the inner electrode stacked on each capacitor unit is different.
Patent KR-20160107913-A (KR)
Inventor: KIM JOON YOEL
IPC: G09F13/04
Filed: 2015-03-06
Abstract: According to the present invention, disclosed are a channel sign board and a manufacturing method thereof. The channel sign board comprises: a sign case having a through-hole in a side surface; a light emitting lamp installed on the inner surface of the sign case to emit light; an advertisement panel installed on the front surface of the sign case, and making advertisement content of an outer surface recognized from the outside by the light emitted from the light emitting lamp; and a reflection member to reflect the light which is emitted from the light emitting lamp and goes out through the through-hole formed in the side surface of the sign case. According to the present invention, a portion of the side surface of the sign case is cut and tapered toward the outside at a predetermined angle, a hole formed on the side surface of the sign case while being cut in the sign case becomes a through-hole. A part cut in the sign case to be inclined towards the outside at a predetermined angle becomes the reflection member. Accordingly, when lighting through the side surface of a channel sign is required, side surface lighting is realized without an individual side surface light emitting lamp, so advertisement effect is doubled with a smooth lighting effect through the side surface of the channel sign.
Patent KR-20160112655-A (KR)
Inventor: SONG MIN JEONG
IPC: A61K8/49
Filed: 2015-03-20
Abstract: The purpose of the present invention is to provide a cosmetic composition for enhancing skin whitening. The purpose of the present invention is to provide a cosmetic composition for enhancing skin whitening through the inhibition of an intermediate factor for promoting the production of melanin. The purpose of the present invention is to provide a health functional food for improving the condition of skin whitening. The purpose of the present invention is to provide a health functional food for improving the condition of skin whitening, which has effects in improving the condition of skin whitening by ingesting inner beauty food.
Patent KR-20160113445-A (KR)
Title: Coaming assembly
Inventor: CHO IK HYUN
IPC: B63B17/00
Filed: 2015-03-20
Abstract: The present invention relates to a coaming assembly. The coaming assembly, according to an embodiment of the present invention, comprises: a first fixed coaming which is formed to be fixed to an offshore structure; a second fixed coaming which is formed in the offshore structure to be separated from the first fixed coaming in order to form a separation part between the first and second fixed coamings; and a detachable coaming which is detachably formed in the separation part. Therefore, the present invention enables the partial separation of the coaming assembly.
Patent KR-20160116926-A (KR)
Title: Radiator of wing type for radiation of LED lighting
Inventor: PARK CHAN HEE
IPC: F21V29/71
Filed: 2015-03-31
Abstract: A radiator is used to discharge heat generated from a light emitting diode (LED) lamp. It is difficult to select a radiator, so a radiator sales company is always faced with a difficult situation. According to the present invention, an aluminum mold is longitudinally attached on an inner surface of a vertical surface placed between an upper and a lower surface of a staple-shaped aluminum frame, and other side surfaces except the vertical surface are attached to a thermal conductive body where heat of an LED map is transferred. Bolts and nuts are used for attachment between the thermal conductive body and the aluminum mold. A ventilation hole is formed on the upper and the lower surface of the aluminum frame, so as to make air circulated well. Such configuration transfers well the heat generated from the LED lamp to an aluminum radiator with a wide area, so a high efficiency LED lamp can be used.
Patent KR-20160118001-A (KR)
Inventor: SONG WON SEOK
IPC: H04N5/225
Filed: 2015-04-01
Abstract: According to an aspect of the present invention, a method for controlling a photographing apparatus includes the steps of: displaying a live view image on a screen; receiving a first gesture inputted in one area of the screen while the live view image is being displayed; and displaying a thumbnail image on the screen along with the live view image based on a time while the first gesture continues.
Patent KR-20160120044-A (KR)
Inventor: PARK CHANG WOOK
IPC: B63B1/40
Filed: 2015-04-07
Abstract: The present invention relates to a solely floating type towing resistance reducing device attached to a front surface of a concrete structure (11) transported by sea. The solely floating type towing resistance reducing device for marine transportation of a concrete structure, comprises: a front plate (110) which maintains a plane to be aligned with the front surface of the concrete structure (11), and covers a front surface part of the concrete structure (11) from a lower part of the concrete structure (11) to a certain height; a vertical curved surface part (120) extended from both left and right sides of the front plate (110) rearward in a curved surface form to head for both left and right end parts of the front surface of the concrete structure (11); a lower curved surface part (130) extended from a bottom part of the front plate (110) rearward in a curved surface form to head for a bottom part of the front surface of the concrete structure (11); and a rear plate (140) which is coupled by being come in contact with end parts of the vertical curved surface part (120) and the lower curved surface part (130), is directly come in contact with the front surface part of the concrete structure (11), and forms a pocket whose upper part is only opened along with the front plate (110), the vertical curved surface part (120), and the lower curved surface (130), wherein the solely floating type towing resistance reducing device is tightly fixed to the front surface part of the concrete structure to be detachable by an anchor bolt that penetrates the rear plate (140).
Patent KR-20160124630-A (KR)
Inventor: LEE DONG HAN
IPC: A23L11/20
Filed: 2015-04-20
Abstract: 본 발명은 통풍개선 효과가 있는 유황마늘과 MSM을 이용한 기능성 발효식품 및 그 제조방법에 관한 것으로, 더욱 상세하게는 기존의 유황마늘과 식물 추출물을 유효성분으로 함유하는 MSM을 효과적으로 적용하여 통풍 및 통풍에 의해 야기되는 동반질환의 개선에 효과가 있는 발효식품 및 그 제조방법에 관한 것이다. 
본 발명에 의한 통풍개선 효과가 있는 기능성 발효식품은 유황마늘 50~70중량부, MSM 식이유황성분 17~20 중량부, 연근 분말 10~20중량부, 녹차잎 분말 2~4 중량부, 옥수수수염 분말 4~8 중량부, 함초 분말 2~4 중량부, 민들레뿌리 분말 1~2 중량부, 동충하초 분말 1~2 중량부, 차전자 분말 1~2 중량부, 다시마 분말 1~4 중량부, 현미 분말 0.5~1 중량부, 갓 분말 0.5~1 중량부, 호박 분말 0.1~2 중량부, 양파즙 1~2 중량부, 매실즙 1~2 중량부를 혼합하여 반죽한 후 제조한 원료를 환 또는 과립 또는 액상 형태의 발효식품으로 제조하여 섭취하게 편리하게 만든 제조공정을 포함한다. 이상과 같이 본 발명에 의한 통풍 개선 효과가 있는 기능성 식품은, 숙변이 
제거되고, 당뇨가 줄고, 혈압 수치가 떨어지고, 통풍의 통증이 사라지며, 어깨 무릎 등 관절의 통증이 줄며, 만성피로가 줄고, 숙취해소가 되며, 숙면을 취할 수 있으며, 전립선 통증이 개선되며, 뇨산수치가 떨어지는 등 통풍 및 통풍으로 야기되는 동반질환의 개선에 효과가 있다.
Patent KR-20160126384-A (KR)
Inventor: LEE SANG JUN
IPC: A01K61/00
Filed: 2015-04-23
Abstract: 본 발명은 어류를 수용하도록 해상에 설치되는 가두리의 상부에 설치되어 하측으로는 그물망이 유지되고 가두리에 부력을 제공하는 가두리용 프레임에 관한 것으로서, 본 발명의 가두리용 프레임은 내측에 폐쇄된 단면을 형성하여 공기층을 수용하며, 클로로프렌(CR) 고무로 이루어지는 내피층; 상기 내피층을 둘러싸도록 배치되며, 나일론제의 경사와 위사로 직조되는 섬유층; 및 상기 섬유층을 둘러싸도록 배치되며, 클로로술폰화폴리에틸렌(CSM) 고무로 이루어지는 외피층을 포함한다.
Patent KR-20160130647-A (KR)
Inventor: RYU WON HYOUNG
IPC: A61M25/10
Filed: 2015-05-04
Abstract: Disclosed are a balloon catheter having protrusions and a method for manufacturing the same. The balloon catheter (100) according to an embodiment of the present invention is a balloon catheter (100) to be inserted into the inside of a blood vessel (10) and volumetrically expanded, and includes a balloon catheter body (110) including a polymer material capable of being volumetrically expanded through fluid injection; multiple protrusions (120) which are manufactured by using a shaping mold (500) having engraved patterns (510) corresponding to the protrusions (120), protruded from the surface of the balloon catheter body (110) at a certain height and have a polygonal shape in side cross sectional view to contact to the inside wall of the blood vessel (10) in order to increase the contact pressure; and an injection port (130) having a structure communicated with the inside of the balloon catheter body (110) to allow fluid to be injected to the inside of the balloon catheter body (110). According to the balloon catheter of the present invention, the surface of the balloon catheter or the surface of the protrusions is coated with a drug deliver carrier for direct deliver into biological tissue, so that efficacy of drug delivery may significantly be enhanced.
Patent KR-20160133262-A (KR)
Title: Electronic device
Inventor: HYEON BYEONG BAE
IPC: G06K13/08
Filed: 2015-05-12
Abstract: According to various embodiments of the present invention, an electronic device includes: a socket; a tray detachably provided at the socket; an accommodation space formed in the tray; and a mounting unit formed in the accommodation space. The accommodation space is formed to accommodate a storage medium with at least one contact pad formed on one surface thereof, and the mounting unit is disposed to face the other surface of the storage medium. The electronic device can be variously implemented according to embodiments.
Patent KR-20160132737-A (KR)
Inventor: BAEK HYO WON
IPC: G09F13/04
Filed: 2015-05-11
Abstract: 본 발명의 광고용 LED모듈에 관한 것으로, 보다 상세하게는 투명한 합성수지재질로 구성되되 내부에 공간이 형성되며 외부와 연결되는 관통 홀(13)이 일측에 형성되고 일측면이 선택적으로 개방될 수 있게 구성되는  케이스부(10)와, 상기 케이스(11)의 내부에 고정 구성되어 발광하는 하나 또는 다수의 LED부(20)와, 하나 또는 다수의 LED부(20)와 각각 연결되는 배선부(30)로 구성되고, 상기 케이스부(10)의 외측면에는 글자 또는 문양을 갖는 스티커(40)가 선택적으로 탈, 부착되도록 하여, 상기 LED부(20)가 발광 시 형성된 글자 또는 문양에 따라 발산되도록 하여 원하는 광고를 효과적으로 제공할 수 있으며, 상기 케이스부(10)의 후면에서는, 상기 케이스부(10)가 안착 또는 결착되어, 구조물에 거치 또는 결합시킬 수 있는 플레이트(50)하여 편리성과 안전성을 확보 할 수 있도록 유용한 발명인 것이다.
Patent KR-20150141133-A (KR)
Inventor: MISAKI SHINJI
IPC: A45D34/04
Filed: 2015-05-22
Abstract: Provided is a liquid applicator allowing an adhesive for skin to be applied on an eyelid without a stain. The liquid applicator (20) includes a liquid container (40) having a tank part (41) in which a liquid to be applied is stored, and a spatula (1) coupled to a front end portion of the liquid container (40). The spatula (1) includes a cylindrical main body (4), an extension portion (7) extended forward in a flat shape from a front end portion of the main body (4), and a through-hole (3) passing through the main body (4) from a rear end thereof to the extension portion (7) and allowing the liquid to flow therethrough. A cut groove portion (10) is formed by cutting a tip end of the extension portion (7) toward the through-hole (3), thereby defining a front end opening (31) of the through-hole (3). Tip end pieces (70) are formed at both sides with the cut groove portion (10) at the center. In the cut groove portion (10), a back end portion (11a) of a lower edge (11) is positioned ahead of a back end portion (12a) of an upper edge (12).
Patent KR-20160138604-A (KR)
Inventor: CHO HYEON SEOK
IPC: A61F2/66
Filed: 2015-05-26
Abstract: 본 발명은 하이브리드 발목관절장치가 개시된다. 본 발명의 일 측면에 따르면, 인체의 발을 대체할 수 있도록 한 발바닥부와, 상기 발바닥부와 회동가능하게 결합되며 상측이 의지와 고정결합되는 관절부를 포함하되, 상기 관절부는 상기 발바닥부의 결합구에 하부가 회전가능하게 결합되고, 상부가 의지와 고정결합될 수 있도록 한 브라켓과, 상기 브라켓에 고정결합되며 유각기시 상기 발바닥부의 각도를 조절할 수 있도록 한 모터구동부와, 상기 모터구동부의 일측에 고정설치되어 입각기시 상기 발바닥부의 각도를 조절할 수 있도록 한 유압실린더부를 포함하는 하이브리드 발목관절장치가 제공된다.