• Asian-Australasian Journal of Animal Sciences
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• 제17권6호
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• pp.743-749
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• 2004

The gene encoding human serum albumin (HSA) was cloned from human liver cDNA library by PCR. The HSA cDNA in size of 2,176 bp, including 1,830 bp of open reading frame, was cloned into the plasmid carried with the 5'flanking sequence of goat $\beta$-casein gene (-4,044 to +2,025 bp) to get a tissue specific expression vector in mammary gland named pGB562/HSA (12.5 kb). A 9.6 kb DNA fragment in which the sequence is in order of goat $\beta$-casein gene regulatory sequence, HSA cDNA and SV40 polyadenylation signals was isolated from the pGB562/HSA by SacI and DraIII cutting, and used to microinject into the pronuclei of mouse fertilized eggs to produce transgenic mice. Three transgenic mice (2 female and 1 male) were identified by PCR and dot Southern blot analysis. The copy numbers of integrated transgene were more than 10 copies in line #21 and #26 as well as over 50 copies in line #31 of transgenic mice. HSA protein collected from the milk of lactating transgenic mice was confirmed by immuno-detection of Western and slot blot. The concentrations of HSA in the milk were from 0.05 to 0.4 mg/ml. An obvious antigen and antibody conjugate could be observed in immunohistochemical stain of mammary gland tissue from lactating day 11 of HSA transgenic mice. The transmission of transgene and its expression was recognized according to the results of RT-PCR and sequences analyses of their progeny.

• 한국멀티미디어학회논문지
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• 제12권2호
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• pp.272-280
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• 2009

모바일 기술의 발전으로 오프라인 컨텐츠가 아닌 온라인 매체로 다양한 영상 컨텐츠를 제공받는 수요층이 늘어나고 있다. 그러나 모바일 단말기의 작은 화면에 맞게 수작업으로 편집/수정하기 위해서는 비용과 노력이 많이 드는 단점이 있다. 따라서 본 논문에서는 영상 컨텐츠 가운데 가장 다양한 형태를 지닌 인쇄 만화를 모바일 단말기 환경에 맞게 자동 변환하는 Automatic Comics Conversion(ACC) 시스템을 제안한다. 모바일 단말기 화면에 적합한 형태로 기존 오프라인 만화책 각 한 면의 프레임으로 분할하기 위해 다층신경망(MLP: Multi-Layer Perceptorn)을 이용하였으며, 각 프레임은 영상의 의미 구조 (Semantic Structure)의 손실을 최소화하여 적합한 크기로 분할된 영상들을 자동 변환하여 제공한다. 또한 동적인 만화 영상을 애니메이션으로 제공하기 위하여 텍스처 분석 연구를 더 했다. 이에 본 연구는 만화뿐만 아니라 프레임 단위로 되어있는 사진, 웹사이트, 다양한 영상 등을 언제 어디서나 제공받을 수 있도록 모바일 단말기에 제공함으로써 효율성을 검증한다. 또한 오프라인의 정지 영상을 분할된 영상 프레임 정보를 통해 움직이는 영상으로 제공할 수도 있다.

• 한국통신학회논문지
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• 제26권12C호
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• pp.240-248
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• 2001

본 논문에서는 현재 우리 나라의 초고속 국가기간전송망의 기본 전송장비인 2.5Gb/s SDH 전송시스템에 적용되어 2-선 양방향 선로 스위칭 링의 자기치유동작을 가능하게 하는 공간분할스위치 소자의 설계와 시스템에의 적용을 다룬다. Compass tool로 설계된 스위치 소자는 1.25Gb/s의 스위치 처리용량을 가지며 0.8$\mu\textrm{m}$ CMOS gate-array로 제작되었다. 제안된 스위치 소자는 2-선 양방향 전송선로 상에 장애가 발생했을 때 신속한 자기치유동작을 가능하게 한다. 스위치의 구조는 Add/Drop 제어부, Cross-point switch, 데이터 프레임 위상 정렬부, 비장착(Unequipped) 신호 프레이머부, 프로세서 접속부 등으로 구성된다. 제작된 2개의 스위치를 병렬구조로 구성하여 2.5Gb/s SDH 전송시스템에 적용하여 시험한 결과 임의의 광선로 장애 시 신호채널들의 링 스위칭 동작으로 즉시 복구가 가능함을 보여준다.

• 제어로봇시스템학회논문지
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• 제21권10호
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• pp.965-971
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• 2015

This paper suggests a feature point-based Iterative Closest Point (ICP) algorithm to compensate for the disparity error in building a two-dimensional map. The ICP algorithm is a typical algorithm for matching a common object in two different images. In the process of building a two-dimensional map using the laser scanner data, warping and distortions exist in the map because of the disparity between the two sensor values. The ICP algorithm has been utilized to reduce the disparity error in matching the scanned line data. For this matching process in the conventional ICP algorithm, pre-known reference data are required. Since the proposed algorithm extracts characteristic points from laser-scanned data, reference data are not required for the matching. The laser scanner starts from the right side of the mobile robot and ends at the left side, which causes disparity in the scanned line data. By finding the matching points between two consecutive frame images, the motion vector of the mobile robot can be obtained. Therefore, the disparity error can be minimized by compensating for the motion vector caused by the mobile robot motion. The validity of the proposed algorithm has been verified by comparing the proposed algorithm in terms of map-building accuracy to conventional ICP algorithm real experiments.

• 한국정보통신학회:학술대회논문집
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• 한국정보통신학회 2012년도 추계학술대회
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• pp.99-102
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• 2012

이미지 크기 조절기는 영상을 화면에 표시하기 위한 디스플레이 장치나 원하는 크기의 영상을 처리할 필요가 있는 영상처리블록 등에서 사용하게 되는 IP이다. 제안한 이미지 크기 조절기는 기존의 이미지 크기 조절기에서 사용하는 프레임 메모리가 아닌 라인 메모리를 사용하고 기본 유닛에 대한 기존 연산 과정에 $2^m$배를 확대해주고 다시 시프트하여 $2^m$배를 축소시키는 방법을 추가함으로써, 하드웨어 구현이 용이하고 적은 자원을 소모하며 뛰어난 정밀도를 가진 이미지 크기 조절기를 보인다. 또한 기존의 이미지 크기 조절기들과 다르게 크기 조절을 위한 내부 파라미터를 자동으로 자체 계산하는 직렬 제산기를 내장하여 IP의 효율성을 증가시켰다. 본 논문에서는 이미지 크기 조절기를 Verilog HDL로 설계하였고 검증을 하기 위하여 이미지 센서와 LCD를 이용하는 어플리케이션 IC에 적용되어 Xilinx Vertex-4 XC4LX80 FPGA로 기능 및 타이밍 검증을 마쳤다. 또한 TSMC 0.18um 공정을 이용하여 ASIC으로도 구현하였다.

• Agricultural and Biosystems Engineering
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• 제6권2호
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• pp.47-53
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• 2005

AMachine vision is a promising tool for the autonomous guidance of farm machinery. Conventional CCD camera for the machine vision needs a desktop PC to install a frame grabber, however, a web camera is ready to use when plugged in the USB port. A web camera with a notebook PC can replace existing camera system. Autonomous steering control system of this research was intended to be used for combine harvester. If the web camera can recognize cut/uncut edge of crop, which will be the reference for steering control, then the position of the machine can be determined in terms of lateral offset and heading angle. In this research, a white line was used as a cut/uncut edge of crop for steering control. Image processing algorithm including capturing image in the web camera was developed to determine the desired travel path. An experimental vehicle was constructed to evaluate the system performance. Since the vehicle adopted differential drive steering mechanism, it is steered by the difference of rotation speed between left and right wheels. According to the position of vehicle, the steering algorithm was developed as well. Evaluation tests showed that the experimental vehicle could travel within an RMS error of 0.8cm along the desired path at the ground speed of $9\sim41cm/s$. Even when the vehicle started with initial offsets or tilted heading angle, it could move quickly to track the desired path after traveling $1.52\sim3.5m$. For turning section, i.e., the curved path with curvature of 3 m, the vehicle completed its turning securely.

• 한국운동역학회지
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• 제17권4호
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• pp.149-156
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• 2007

The purpose of this study was to compare the world class women's hurdlers with kinematic variables Lee Yeon-Kyoung's in the 100m hurdle. Among korea elite female hurdler, Lee Yeon-Kyoung was participated as a subject. Eight JVC video cameras(GR-HD1KR) were used to film the performance of Lee Yeon-Kyoung at a frame rate of 60fields/s. The real-life three-dimensional coordinate data of digitized body landmarks were smoothed using a fourth order Butterworth low pass recursive digital filter with an estimated optimum cutoff frequency of 7.4Hz. After analyzing and comparing Lee Yeon Kyung's kinematic variables with the world top class hurdlers in the woman's 100m hurdle run, the following conclusions were obtained. 1. Lee should be able to increase the speed with over 5.4m/s from start to first hurdle and then maintain the speed range from 8.33m/s to 8.67m/s until 10th hurdle. Lee should have to maintain the speed with 8.51m/s from 10th hurdle to finish line. 2. Lee has to reach her maximum running speed at 5th hurdle and then has to shorten running time with 0.5sec between hurdles. 3. Lee should be able to run around 2.5sec from start to frist hurdle and then maintain under 1.00sec following phases. Lee should be able to maintain under 1.10sec from 10th hurdle to finish line. 4. Lee needs to control a consistent takeoff and landing distance pattern, Lee needs to lower the height of the center of gravity of the body with 0.33m when she clears the hurdles.

• 한국생산제조학회지
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• 제21권3호
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• pp.459-464
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• 2012

The point of impact, the shot group, and the flight traces depend on the combination of unique features which decide moving traces of the arrow (paradox of the archer, length of the arrow shaft, weight, angle of the feather, and spline of the arrow shaft). The more dense the impact points in the shot group and the earlier elimination of paradox of the archer, the higher assessment is given for the product. However, there is no way to objectively assess the efficiency and quality of the arrow, and there is no numeric data to be used as the basis for comparison with other products. Although capturing the images of flying arrow using a high-speed motion picture camera is possible, we are limited to observation from specific view angle only. Hence, the criteria for efficiency and quality assessment are mostly based on subjective opinions of experts or hunters, or review on consumers' remarks. In this paper, we propose a hardware composition that are based on three detection frames consisting of line lasers and photo diode arrays without the high-speed motion picture camera. Predicated on measured coordinates data, a nobel method for the archer's paradox measurement, a key parameter that determine the arrow's trajectory, and corresponding numerical analysis model is proposed.

• 융합신호처리학회논문지
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• 제7권1호
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• pp.17-23
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• 2006

RFID는 각종 서비스 산업은 물론 물류, 산업 현장, 제조 공장과 국방 분야까지 물품의 흐름이 있는 곳이면 어디에서나 적용이 가능하여 사회 여러 분야로부터 큰 관심을 받고 있다. 그러나, 현재 900MHz 대역의 RFID에서 사용하는 ISO/IEC 18000-6의 프로토콜에서는 에러검출을 위한 CRC16만을 사용함으로써 낮은 수준의 보안과 양호한 채널 환경에서 대량의 물품을 빠른 시간 내에 인식하는 상황에서는 적합하나 데이터 양이 적고 놀은 수준의 보안이 요구되는 곳이나 채널 환경이 열악한 곳에서는 에러정정능력을 갖추지 못해 데이터의 신뢰성이 떨어질 것으로 예상된다. 돈 논문에서는 이와 같은 높은 수준의 보안이 요구되는 곳이나 잡음이 많은 채널 환경에서의 RFID 사용을 가정하여 ISO/IEC 18000-6 규격을 응용하여 적용하는 한 가지 방법으로서 콘벌루션 부호의 적용을 시도하였으며, 이를 구현하고 성능을 측정하였다. 신호의 제어와 전송을 위하여 마이크로프로세서와 RF부를 구현하였고, RFID 시스템의 신뢰성 향상을 위해 리더기에서 태그로의 명령어 및 데이터 전송 시에 FPGA를 이용하여 콘벌루션 부호를 구현하였다. 이러한 채널 부호를 적용했을 때와 적용하지 않았을 때의 프레임 오류율과 채널의 가시 성분이 있을 경우와 없을 경우를 나누어 프레임 오류율을 측정 비교하였다.

• 천문학회보
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• 제36권2호
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• pp.85.2-85.2
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• 2011

A new infrared spectro-polarimeter was installed in 2008 onto the Solar Flare Telescope of NAOJ in the Mitaka headquarters. The Solar Flare Telescope had been operated previously as a filter-based magnetograph and obtained vector magnetograms of active regions with the Fe I 630.3nm line during 1992 - 2005. The aim of this new instrument is to measure the distribution of magnetic helicity over the whole Sun and for an extended period with high magnetic sensitivity in the infrared wavelengths. This spectro-polarimter is able to obtain polarizations in both photospheric and chromospheric layers. In order to take full Stokes profiles, we observe Fe I 1564.8 nm and He I 1083.0 nm lines (with the neighboring photospheric Si line) for the photospheric and chromospheric magnetic field vectors, respectively. The infrared detector of this instrument is a $640{\times}512$-pixel InGaAs camera produced by a Belgian company Xenics. The frame rate of the camera is 90 frames/sec. The 640-pixel row of this camera is set along the spectrograph slit of the polarimeter. Since the slit only covers the solar hemisphere, a full disk map is obtained by raster scanning the solar disk twice. A magnetic map is made of about $1200{\times}1200$ pixels with a pixel size of 1.8 arcsec. It generally takes 1.5 hours to scan the whole Sun. Although some issues on the instrument calibration still remain, a few maps of the whole Sun at the two wavelengths are now taken daily. In this presentation, we will introduce the instrument and present some observational results.