• Proceedings of the Korean Society of Agricultural Engineers Conference
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• 2004.11a
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• pp.98-98
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• 2004

• Proceedings of the Korea Information Processing Society Conference
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• 2023.11a
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• pp.1114-1115
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• 2023

이 논문은 해양 안전 및 보트 운항 훈련을 위한 소형선박 시뮬레이터의 개발을 다룬다. 시뮬레이터는 자유 운항, 시험 모드 운항, 초급자 훈련 모드 운항 등 다양한 기능을 제공하며, 사용자의 실력과 선호도에 따라 맞춤 교육을 제공한다. 이를 통해 보트 운항의 안전성을 향상시키고, 비용 효율적인 방법으로 많은 사용자들에게 접근 가능한 학습 도구를 제공한다.

• Proceedings of the KIPE Conference
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• 2019.07a
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• pp.20-22
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• 2019

본 논문에서 공통모드 커플드 인덕터(Common Mode Coupled Inducter, CMCI)를 적용한 2단 직렬 위상천이 풀브리지 컨버터를 제안한다. 제안하는 위상천이 풀브리지 컨버터는 고주파수로 동작하며, 높은 입력전압에 대응할 수 있다. 풀브리지를 직렬로 쌓은 구조로 상단 풀브리지 컨버터와 하단 풀브리지 컨버터가 동시에 스위칭 한다. 2차측은 센터텝 정류기를 사용하여 풀브리지 정류기에 비해 다이오드 전압강하가 절반이라는 장점을 가진다. 또한, 변압기에 CMCI를 적용하여 1차측 상단과 하단의 전류 균형을 유지하도록 구성하였다. 제안하는 위상천이 풀브리지 컨버터의 5.8kW급 시제품을 제작하여 그 타당성을 검증하였다.

• Journal of the Korean Geographical Society
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• v.45 no.5
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• pp.647-668
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• 2010

As well as "Sangyeongpyo," "Gogyeong-Jeongripyo," table of national road transportation system is important to comprehend identity of national geography in Joseon era even if it had not been researched yet. The aim of this study is to divide type of these tables and find its genealogy through mainly analyzing the road network and land names. As the result of this research, "Yeojigo," topographical researches of Korea, edited by Shin Gyeong-Jun as a palt of "Dongguk-Munheonbigo" official book in natural history of the Joseon Dynasty published in 1770, might be identified as the origin for all copy of "Gogyeong-Jeongripyo." Then "Gogyeong-Jeongripyo," can be divided into at least three major types; almost direct descent of "Yeoji go" as 'type1', minor modification as 'type2', and hybrid edition(type3) with second type that quoted many land names as route information from "Dorogo," another topography specialized for road transportation. Since "Dorogo" was also composed by Shin, after all, all genealogy of "Gogyeong-Jeongripyo" came from him.

• Korean Journal of Veterinary Research
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• v.42 no.2
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• pp.231-239
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• 2002

Proteomics is an emerging powerful tool in studying protein expression and function. At present study, proteomics was employed to evaluate the antigenicity among Escherichia coli O157:H7 strains using 2-dimensional gel electrophoresis (2-DE) and immunoblotting, SDS-PAGE and immunblotting analysis revealed no big differences among E coli O157:H7 strains. 2-DE analysis, however, revealed common antigens as well as specific antigens. The immunoblotting analysis revealed 20 common antigenic spots among E coli O157:H7 strains. In addition, there were 3 and 13 spots as common antigens between ATCC 43894 and KSC 109, and between ATCC 43894 and ACH 5, respectively. Antigenic spots specific for individual strain were also identified as 15, 8 and 22 for ATCC 43894, ACH 5 and KSC 109, respectively. The common antigens would be useful by employing either vaccine development or diagnosis marker, or both, whereas the specific antigens of individual strains would be applicable for epidemiological study. This study suggest that proteome analysis, representative as 2-DE, is valuable tool in exploring the E. coli antigenicity.

• The Journal of Korean Medicine
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• v.15 no.2 s.28
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• pp.143-155
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• 1994

A clinical study. related the treatment of Jang-Bu-Peon-Zheng(臟腑辨證), was done in 248 cases of patient who was served in medical service of Oriental medical school in Dong shin University. This study was done in Jeong Do Myun Shin An Gun, Jeonnam. The result obtained were as follows: 1. The ratio between male and female was 1:3.2. and the patients' ages ranged mostly between the fifties and sixthies. 2. When we saw the distribution according to Peon-Zheng(辨證). the syndrom of BiWi system(脾胃系) and Shim system(心系) occupied the highest percentage in the aspect of Jang-Bu(臟腑). In the aspect of syndrome. the Shimhyulher(心血虛) was most numerous. 3. In the distribution of chief complaint. each case showed the difference of prequency. In this fact. we could confirm prequent sign. 4. In the distribution of treatment times. 57 cases out of 248 cases was served in medical service more than three times, which amounts to 23.0%. When we saw the effect of treatment in that 57 cases, 46 cases was more than 'good', which amounts to 80.7%.

• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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• 2021.05a
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• pp.413-415
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• 2021

Piano is one of the most beloved instruments in the world and is used a lot for children to learn music because it is simple to play. As a result, various products for children, such as toy pianos, were released. However, there is a lack of piano skills for music education, such as how to play the piano or read the score. To solve this problem, in this paper, we propose a game-style educational piano using Arduino. It is expected to capture fun and education at a low price by scoring points by displaying the score on the LCD screen and pressing the keyboard according to the timing of playing the note.

• Journal of environmental and Sanitary engineering
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• v.23 no.4
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• pp.83-93
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• 2008

The non-linear least squares model(NLSM) has long been the standard technique used by hydrologists for constructing rating curves. The reasons for its adaptation are vague, and its appropriateness as a method of describing discharge measurement uncertainty has not been well investigated. It is shown in this paper that the classical method of NLSM can model only a very limited class of variance heterogeneity. Furthermore, this lack of flexibility often leads to unaccounted heteroscedasticity, resulting in dubious values for the rating curve parameters and estimated discharge. By introducing a heteroscedastic maximum likelihood model(HMLM), the variance heterogeneity is treated more generally. The maximum likelihood model stabilises the variance better than the NLSM approach, and thus is a more robust and appropriate way to fit a rating curve to a set of discharge measurements.

• Bulletin of the Korean Chemical Society
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• v.29 no.11
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• pp.2129-2134
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• 2008

• Proceedings of the Korea Information Processing Society Conference
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• 2017.11a
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• pp.1092-1094
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• 2017

오큘러스의 대중화 선언 이후로 일반인들에게도 가상현실(VR, Virtual Reality)에 대한 많은 관심을 불러일으켰다. 국내에서도 VR산업에 많은 투자를 하고 있으며, 현실감이 부족한 점을 보안하기 위해 웨어러블을 적용한 실감현 콘텐츠를 제작하고자 하였다. 사람의 움직임을 적외선 센서와 자이로 센서로 인식하고 측정된 센서값을 아두이노와 라즈베리파이를 이용하여 디바이스 입력신호로 처리값을 블루투스 통신으로 디바이스에 전송하여 작동한다. 기존에 없던 웨어러블(wearable) 컨트롤러로 현실감 있는 리얼한 게임을 제공한다.