심층신경망을 이용한 스마트 양식장용 어류 크기 자동 측정 시스템

이윤호,전주현,주문갑,Lee, Yoon-Ho,Jeon, Joo-Hyeon,Joo, Moon G. 대한임베디드공학회 2022 대한임베디드공학회논문지 Vol.17 No.3

To measure the size and weight of the fish, we developed an automatic fish size measurement system using a deep neural network, where the YOLO (You Only Look Once)v3 model was used. To detect fish, an IP camera with infrared function was installed over the fish pool to acquire image data and used as input data for the deep neural network. Using the bounding box information generated as a result of detecting the fish and the structure for which the actual length is known, the size of the fish can be obtained. A GUI (Graphical User Interface) program was implemented using LabVIEW and RTSP (Real-Time Streaming protocol). The automatic fish size measurement system shows the results and stores them in a database for future work.

본태성 진전에 대한 시상파괴술과 뇌심부 자극술의 비교

이윤호,박용숙,장종희,장진우,박용구,정상섭,Lee, Yoon-Ho,Park, Yong-Sook,Chang, Jong-Hee,Chang, Jin-Woo,Park, Yong-Gou,Chung, Sang-Sup 대한신경외과학회 2005 Journal of Korean neurosurgical society Vol.37 No.2

Objective: Thalamic lesioning and deep brain stimulation(DBS) have proved to be beneficial to the treatment of essential tremor(ET). The authors compared the effects and complications of two modalities. Methods: A total of 34 patients with ET were treated with ventral intermediate(Vim) nucleus thalamotomy or Vim DBS from May 1999 to May 2003. The procedure of lesioning or stimulation were performed as usual manner with or without microelectrode recording. Postoperatively, utilizing the various combinations of frequency, voltage and pulse width optimized the stimulation. The degree of improvements of tremor and the occurrence of the complications were evaluated postoperatively and at follow-up. Results: There were 38 procedures, including 27 with Vim thalamotomy and 11 with DBS, in 34 patients. Of the thalamotomy group, left Vim lesioning is 25 and right one is 2. Follow-up duration ranged from 12 to 57 months. In the thalamotomy group, the rate of overall good outcome was 88.9% but 12 patients (44.4%) showed permanent adverse effects. In the cases of stimulation, the rate of overall good outcome was 90.9% and two patients had acceptable dysarthria. Conclusion: Both Vim thalamotomy and Vim DBS were effective for the treatment of ET, although perioperative adverse effects tended to be higher in patients who had thalamotomy. In cases of DBS, adjustments of stimulation parameters enabled an acceptable position to be achieved with tremor control and unwanted effects.

오일-질소가스 혼합유체를 이용한 고온 오일플러싱 시스템 공정설계에 관한 연구

이윤호,최부홍,Lee, Yoon-Ho,Choi, Bu-Hong 해양환경안전학회 2017 해양환경안전학회지 Vol.23 No.5

본 연구에서는 해양플랜트설비 건조 현장에서 사용되고 있는 기존 고온 오일 플러싱 장비에 대한 성능개선을 위해 기존의 플러싱 장치에 사용되던 오일에 질소가스를 혼합한 고온 오일 플러싱 시스템에 대하여 국제표준화기구 코드(ISO code)를 기준으로 이론적 연구를 수행하였다. 연구를 위해 오일-질소가스 혼합유체 플러싱 시스템 공정을 설계 후 청정성능에 영향을 주는 혼합유체의 혼합비율, 온도, 레이놀즈수 및 액상분율 등에 대한 공정모사 결과도 분석하였다. 그 결과 관 직경과 가스상의 체적분률이 일정한 상태에서 혼합유체의 체적유량이 증가될수록 수평 유압배관 입출구의 액상분율 차이 ${\Delta}{\alpha}_L$ 값은 증가하게 되고 배관길이 방향의 위치에 따라 오일과 질소가스 기포 사이의 상분포가 달라짐을 확인했다. 이러한 상분포의 변화는 오일-질소가스 혼합유체 플러싱 시스템의 청정성능에도 커다란 영향을 줄 것으로 예상된다. A theoretical study on gas-liquid two-phase flow flushing systemnitrogen gas to the oil used for existing flushing equipment was conducted on the basis of ISO code so as to improve performance of existing high-temperature oil flushing equipment used in ocean plant facility drying field. For study, we analyzed process simulation results mixed fluid mixing ratio, temperature, Reynolds number and liquid hold up affectcleaning performance after designing oil-nitrogen gas mixture flushing system process. As a result, as the volume flow rate of mixed fluid increases with the tube diameter the volume fraction of the gas phase constant, the liquid fraction difference value at the inlet and outlet of horizontal hydraulic piping increases. It was found that the phase distribution between oil and nitrogen gas bubbles varies depending on the position the pipe lengthdirection. This change in phase distribution is expected to have a significant impact on the clean performance of an oil-nitrogen gas mixture flushing system.

웹캠과 스마트폰 기반의 반려 동물 돌봄 로봇의 구현 및 전원 관리

이윤호,전주현,이나은,장제문,유신,주문갑,Lee, Yoon-Ho,Jeon, Joo-Hyeon,Lee, Na-Eun,Jang, Jea-Moon,Yu, Shin,Joo, Moon G. 대한임베디드공학회 2021 대한임베디드공학회논문지 Vol.16 No.1

We developed a pet care robot that can be controlled outdoors. Through the smartphone application, the pet owners can watch the situation in the house and manipulate the robot to make their pet happy. The video data in the house is transmitted to the application through the webcam installed at the house. The robot can not only perform user's command but also do six basic macro action. The obstacle avoidance function using the current sensor can be activated if the user want to use. When the robot hits to something, it moves back and rotates by arbitrary angle, and then moves forward.

호텔종사원의 조직공정성과 윤리적 리더십에 대한 인식이 조직충성도에 미치는 영향

이윤호(Yoon Ho Lee),배인호(In Ho Bae) 한국관광연구학회 2011 관광연구저널 Vol.25 No.4

In this study, effects of the organizational justice of hotel employees on the organizational loyalty were examined and then the ethical leadership was examined to know whether this played a significant role of intermediate in the relation between the organizational justice and the organizational loyalty, by carrying out documentary research and empirical research. Results of empirical analysis research showed that the ethical leadership of hotel manager played a significant role of intermediate in the relation between the organizational justice and the organizational loyalty recognized by hotel employees. This represents that the more hotel employees recognize the ethical leadership of hotel manager, the more their organizational loyalty increases. In rapidly changing environments of company, it is very important these days to establish a rational organizational culture which allows employees to recognize the ethical norms and values in the company. Also, the ethical model of manager contributes to enhancing employees` recognition of probity, consideration and justice, and boosting confidence in their manager. This study implied that the ethicality would be a very important factor for hotel managers to establish a right organizational culture and for hotel employees to commit to their mission.

신도시 개발로 인한 성남시의 차별적 생성과 변화

이윤호(Yoon Ho Lee) 한국도시지리학회 2000 한국도시지리학회지 Vol.3 No.2

This paper attempted to analyze the differential becoming and transformation of Seongnam City that have two regional structures through the new town developments two times, for recent 30 years. The analysis is based on the dynamics the contrasting transformational mechanism centered on the demography, housing, transportation, and industry factors which created differentiated built environment. The study shows that the people with different socioeconomic characteristics have differently migrated into each of the two places the old town and the new town. Although there are unique environment of production and consumption for their own residents within the old town itself in which has terrible housing environment; whereas the new town consists of planned built environments in which large scale apartments take the central place heavily depending on Seoul. Accordingly, two places are not related closely with each other. Also, since 1985, the new town developments have accelerated deindustrialization of Seongnam City, and chard the city consuming one.

호텔직원의 셀프리더십과 조직유효성간의 영향관계에서 LMX(Leader-Member Exchange)의 매개효과연구

이윤호(Yoon Ho Lee),양길승(Gil Seung Yang) 한국관광연구학회 2012 관광연구저널 Vol.26 No.6

This study was purposed to survey substantially whether the self leadership of the hotel employees makes significant influence on the satisfaction on the working and organizational commitment which are the sub-factors of the organization effectiveness and whether LMX plays significant intermediating role in the influencing relation among the self leadership, satisfaction to the working and organizational commitment. The substantial analysis results displayed that the self leadership of the hotel employees made positive (+) influence on the work satisfaction, and organizational commitment and the LMX did not play the significant intermediating role in the relation between the self leadership and work satisfaction. But it was shown that LMX played significant intermediating role in the relation between the self leadership and organizational commitment. Accordingly, even though the higher self leadership of hotel employees heightened the organization effectiveness and LMX did not play the intermediating role to heighten the significance between self leadership and work satisfaction, but it was indicated that it played the perfect role to heighten the significance between the self leadership and organizational commitment. Consequently, when the improvement of satisfaction to the work of the hotel employees was regarded to show the personal capability of the each employee, it was known that the communication with the boss was important depending on the personal motive and vision to heighten the commitment to the organization. This study was focused whether the self development of hotel employees made substantial influence on improving the accomplishment of the organization through the cooperation with the boss. The substantial study revealed that the personal leadership capability of the hotel employees was directly connected with the organizational accomplishment via the internal communication of the organization.

LNG-FSRU용 재기화 시스템의 열원 온도 및 기화성능의 변동에 따른 시스템 특성분석

이윤호(Yoon-Ho Lee),김유택(You-Taek Kim),강호근(Ho-Keun Kang) 한국마린엔지니어링학회 2014 한국마린엔지니어링학회지 Vol.38 No.6

범죄자에 대한 시설수용의 대체방안

이윤호(Lee Yoon Ho),김보환(토론자),김현순(토론자),조준현(토론자) 한국형사법무정책연구원 1990 형사정책연구 Vol.2 No.-

조건부가치측정법(CVM)을 활용한 국회담장허물기사업의 경제적 타당성 분석

이윤호(Lee, Yoon-Ho),김도우(Kim, Do-Woo),김연수(Kim, Yeon-Soo) 동국대학교 사회과학연구원 2011 사회과학연구 Vol.18 No.1

본 연구의 목적은 국회담장허물기사업의 경제적 타당성을 분석하여 국회가 제공하는 서비스가 이용자들의 생활에 기여하는 정도를 파악함과 함께 사업의 비용과 사회적 편익을 산출하는데 있다. 국회담장허물기사업의 경제적 가치를 측정하는 방법으로는 지불가능금액(WTP)에 의한 조건부가치측정법(CVM)을 적용하였다. 연구결과는 다음과 같다. 국회담장허물기사업의 사회적 비용은 국회 담장의 철거비용과 담장철거에 따른 조경비용, 담장철거를 위한 경호경비 증가비용, 담장개방이후 유지관리비용과 같이 직접비용과 간접비용을 구분하여 산정하였으며, 직접 비용은 1,690,000,000원, 그리고 간접비용을 포함하면 4,651,325,105원으로 추정되었다. 또한 국회담장허물기사업의 사회적 편익은 국회 방문객 및 이용객들의 접근성을 보장하여 국회의 이용 행태 및 만족도에 긍정적인 영향을 주고, 인접해 있는 한강시민공원 등과의 상호 연계성을 강화하며, 녹지공간을 확보함으로써 자연생태 공원을 조성할 뿐만 아니라 일상적 이용 성격에 있어서 근린공원 분위기를 조성하여 오픈스페이스의 연결성을 부여한다는 측면에서 편익을 산출하였다. 우선 국회담장허물기사업에 찬성 집단의 지불의사금액 2,279원으로 나타났고, 국회담장허물기사업에 반대 집단의 지불의사금액은 664원으로 산출되었다. 이러한 분석의 결과로 볼 때, 사회적 편익에 비해 사회적 비용이 상대적으로 크게 추정되어 경제적 타당성이 없는 것으로 나타났다. The purpose of this study is to measure the economic value of the National Assembly’s fence opening project. that maintains amenity of the people and to calculate the social costs and social benefits of fence opening project. To measure the economic value of the National Assembly’s fence opening project, contingent valuation method(CVM) using willingness to pay(WTP) was applied. The WTP in fence opening model is significant at 95% confidence level. The results of this study are summed up as follows. Social costs of National Assembly’s fence opening project is calculated to direct costs and indirect costs, as an example of these cost, there are demolition costs and the Congress a fence, increased security cost, fence landscaping costs, and fencing, maintenance costs, The direct cost is calculated ￦ 1,690,000,000 and total costs, including indirect costs were estimated ￦ 4,651,325,105. In the case of social benefits were calculated by the following considerations: ① Visitors and guests of the National Assembly accessibility; ② Customer Behavior and Satisfaction of the National Assembly; ③ Tying interaction with the Han River Citizen’s Park; ④ Green space by creating Ecological Park; ⑤ Create an atmosphere of neighborhood parks. The WTP in Fence opening group were showed ￦ 2,279 per month and the WTP of opposed to the fence group were calculated ￦ 664 per month. From the results of this analysis, the National Assembly’s fence opening project is estimated that there was no economic value because social benefits are relatively larger than social cost.