Stationary position control of a wheeled blimp

Mihee Nam,Seong-sik Yoon,Sungchul Kang,Takashi Tsubouchi 제어로봇시스템학회 2002 제어로봇시스템학회 국제학술대회 논문집 Vol.2002 No.10

Cooperative control system of the floating cranes for the dual lifting

Nam, Mihee,Kim, Jinbeom,Lee, Jaechang,Kim, Daekyung,Lee, Donghyuk,Lee, Jangmyung The Society of Naval Architects of Korea 2018 International Journal of Naval Architecture and Oc Vol.10 No.1

This paper proposes a dual lifting and its cooperative control system with two different kinds of floating cranes. The Mega-erection and Giga-erection in the ship building are used to handle heavier and wider blocks and modules as ships and off-shore platforms are enlarged. However, there is no equipment to handle such Tera-blocks. In order to overcome the limit on performance of existing floating cranes, the dual lifting is proposed in this research. In the dual lifting, two floating cranes are well-coordinated to add up the lift capabilities of both cranes without any loss such that virtually a single crane is lifting, maneuvering and unloading. Two main constraints for the dual lifting are as follows: First, two barges of floating cranes should be constrained as a rigid body not to cause a relative motion between two barges and main hooks of the two cranes should be controlled as main hooks of a single crane. In order words, it is necessary to develop the cooperative control of two floating cranes in order to sustain a center of gravity of the module and minimize the tilting angle during the lifting and unloading by the two floating cranes. Two floating cranes are handled as a master-slave system. The master crane is able to gather information about all working conditions and make a decision to control the individual hook speed, which communicates the slave crane by TCP/IP. The developed control system has been embedded in the real floating crane systems and the dual lifting has been demonstrated five times at SHI shipyard in 2015. The moving angles of the lifting module are analyzed and verified to be suitable for hoisting control. It is verified that the dual lifting can be applied for many heavier and wider blocks and modules to shorten the construction time of ships and off-shore platforms.

Cooperative control system of the floating cranes for the dual lifting

Mihee Nam,Jinbeom Kim,Jaechang Lee,Daekyung Kim,Donghyuk Lee,이장명 대한조선학회 2018 International Journal of Naval Architecture and Oc Vol.10 No.1

This paper proposes a dual lifting and its cooperative control system with two different kinds of floating cranes. The Mega-erection and Gigaerection in the ship building are used to handle heavier and wider blocks and modules as ships and off-shore platforms are enlarged. However, there is no equipment to handle such Tera-blocks. In order to overcome the limit on performance of existing floating cranes, the dual lifting is proposed in this research. In the dual lifting, two floating cranes are well-coordinated to add up the lift capabilities of both cranes without any loss such that virtually a single crane is lifting, maneuvering and unloading. Two main constraints for the dual lifting are as follows: First, two barges of floating cranes should be constrained as a rigid body not to cause a relative motion between two barges and main hooks of the two cranes should be controlled as main hooks of a single crane. In order words, it is necessary to develop the cooperative control of two floating cranes in order to sustain a center of gravity of the module and minimize the tilting angle during the lifting and unloading by the two floating cranes. Two floating cranes are handled as a master-slave system. The master crane is able to gather information about all working conditions and make a decision to control the individual hook speed, which communicates the slave crane by TCP/IP. The developed control system has been embedded in the real floating crane systems and the dual lifting has been demonstrated five times at SHI shipyard in 2015. The moving angles of the lifting module are analyzed and verified to be suitable for hoisting control. It is verified that the dual lifting can be applied for many heavier and wider blocks and modules to shorten the construction time of ships and off-shore platforms.

의미연결망 분석을 활용한 국내 차분야 연구 동향 분석 -KCI 등재지 중심으로-

남미희 ( Nam Mihee ) 원광대학교 한국예다학연구소 2023 한국예다학 Vol.11 No.-

본 연구는 차분야 전문학회지 중 KCI 등재지에 게재된 논문을 중심으로 차분야 연구의 동향을 분석하고자 하였다. 1995년부터 2022년까지 학술지에 게재된 1,206편의 논문에서 추출한 4,195개의 주제어를 대상으로 R 프로그램, 텍스톰과 UCINET을 활용하여 주제어의 빈도분석과 주요 주제어의 의미연결망 분석을 시행하였다. 분석결과, 차분야 연구의 주제어 출현빈도는 한국, 차문화, 녹차 순으로 높았으며, TF-IDF 가중치 분석결과는 출현빈도 순위와 유사한 결과를 보였다. 주요 주제어의 의미연결망 분석에서 한국, 녹차가 중심성이 높아 차분야의 핵심 주제어로 확인되었다. 주제어의 중요도는 화학성분, 한국, 녹차 순으로 나타나 성분 분석연구가 차분야에서 차지하는 역할을 알 수 있었다. 시기별 주제어의 중요도 변화를 통해 주요 연구영역이 차과학, 차보건, 차문화 분야로 확장되는 것을 확인할 수 있었다. 세부 연구영역 도출을 위한 CONCOR 분석결과 8개 군집이 형성되었으며 차과학, 차보건, 차문화 분야의 연구가 차산업, 차교육 분야의 연구에 비해 활발히 이루어지고 있었음 알 수 있었다. 본 연구는 차분야의 연구 동향과 시사점을 제시하였으며, 향후 차학의 학문적 정체성과 연구과제와 방향을 제언하였다. The aim of this paper was to evaluate the research trend of tea based on the KCI-listed journals publications among journals of the tea. From 1995 to 2022, 4,195 keywords extracted from 1,206 papers published in journals were analyzed using R program, Textom, and UCINET to analyze the frequency of keywords and the semantic network of major keywords. As a result of the analysis, the frequency of appearance of the main words in research on tea was high in the order of Korea, tea culture, and green tea. The result of TF-IDF weight analysis showed similar results to the order of appearance frequency. In the semantic network analysis of major keywords, Korea and green tea were identified as key keywords in the tea research because of their high centrality. The importance of the main words was in the order of chemical composition, Korea, and green tea, indicating the role of component analysis research in research on tea. It was confirmed that the main research areas were expanded to tea science, tea health, and tea culture through changes in the importance of key words by period. The results of Convergence of iterated Correlations(CONCOR), eight clusters were identified, and research of tea science, tea health, and tea culture was actively conducted compared to research of tea industry and tea education. This study analyzed the research trend of tea, and suggested the academic identity and future research directions.

사회복지공동모금회 지원주택 모델화 사업 성과평가

남기철(Nam, Ki Cheol),박미희(Park, Mihee) 한국사회복지행정학회 2023 한국사회복지행정학 Vol.25 No.1

Design of a Wheeled Blimp

Sungchul Kang,Mihee Nam,Changwoo Park,Munsang Kim 제어로봇시스템학회 2001 제어로봇시스템학회 국제학술대회 논문집 Vol.2001 No.10

사회복지공동모금회 배분사업의 성격과 방향에 대한 소고

남기철(Ki Cheol Nam),최상미(Sangmi Choi),김수정(Soo Jung Kim),박미희(Mihee Park),엄기욱(Ki Wook Um),장연진(Yeon Jin Jang) 한국비영리학회 2022 한국비영리연구 Vol.21 No.2

본 연구는 우리나라에서 가장 큰 규모의 모금액과 배분액을 보고하고 있는 사랑의열매 사회복지공동모금회의 배분에 대한 실증적 분석을 바탕으로, 모금회 배분의 성격을 진단하고 향후 배분 방향에 대한 함의를 제공한다. 이를 위해 2016∼2020년 사랑의열매 사회복지공동모금회의 배분 통계 자료를 활용하여 배분총액, 배분대상, 배분분야, 사업유형별 배분, 중앙회 대비 지회 배분의 현황과 추이를 분석한다. 분석 결과, 모금회의 배분은 배분금액의 지속적 증가, 사업유형 중 지정기탁사업의 압도적으로 높은 비중과 증가, 기획사업 비중의 감소, 기초생계 및 위기가정에 대한 집중 지원, 중앙회 대비 지회 배분 규모의 빠른 성장, 지회 간 격차 등의 특징과 성격을 가지는 것으로 나타났다. 이러한 모금회의 최근 배분 통계 분석 결과를 바탕으로 본 연구는 질적 분석을 활용한 모금회와 정부 관계에 대한 후속 연구의 필요성, 지정기탁사업에서의 모금회 기획력 강화, 사업 분류 방식의 개편 필요성, 배분과 관련한 모금회 내외부의 논의와 합의에 기반한 청사진 마련의 필요성 등을 제안한다. The study aims to assess the nature of distribution and provide practical implications for future distribution of Community Chest of Korea, based on the empirical analysis of the distribution from 2016 to 2020. For this, the current study analyzed the status and trend regarding total amount of distribution, distribution targets, distribution fields, distribution by type, and distribution of local chapters compared to the central office. As a result of analysis on the distribution status and trend of Community Chest of Korea using distribution statistics from 2016 to 2020, the study found the Community Chest of Korea’s nature of distribution: the continuous increase in the amount distributed, the overwhelmingly high proportion and increase of designated donation project, the decrease in the proportion of planned project, concentration of support for families in crisis, local communities, and support for basic livelihoods, and relatively rapid increase in distribution size among local chapters compared to central office. Based on these findings, the study proposes the necessity of reinforcing social responsibility, follow-up studies on the relationship between the Community Chest of Korea and the Korean government using qualitative approach, strengthening the planning ability in designated donation project, reclassification of project type, and establishing directions based on preparing a blueprint based on discussions and consensus among various stakeholders related to distribution.

Zr-doping effect on the capacity retention of LiNi_0.5Mn_1.5O_4–δ cycled between 5.0 and 1.0 V: <i>In situ</i> synchrotron X-Ray diffraction study

Yoon, Jaesang,Jeong, Mihee,Bae, In Tae,Nam, Kyung-Wan,Yoon, Won-Sub Elsevier 2017 Journal of Power Sources Vol.368 No.-

<P><B>Abstract</B></P> <P>Zr-doped LiNi<SUB>0.5</SUB>Mn<SUB>1.5</SUB>O<SUB>4-δ</SUB> (Zr-LNMO) is synthesized by a solid-state method and the effects of Zr-doping on its structural behavior are systematically investigated by using synchrotron-based <I>in situ</I> x-ray diffraction during the 1st and the 2nd cycles between 1.0 and 5.0 V. Differences in the structural changes for Zr-LNMO and LNMO during cycling were clearly observed. Both samples show similar reversible phase transitions between three cubic phases and two tetragonal phases during the 1st cycle. However, during the 2nd cycle, overall phase transitions between tetragonal and cubic phases for Zr-LNMO show more reversible features than those for LNMO. <I>In situ</I> XRD results during the 2nd cycle reveal that some parts of LNMO cathode materials do not contribute to the capacity, due to the incomplete phase transition between cubic and tetragonal phases and sluggish phase transition kinetics. It is proposed that the increase in the lattice volume by Zr-doping allows more reversible structural changes during repeated cycling, compared to the undoped LNMO, resulting in the improved capacity retention of Zr-LNMO. This study shows that Zr-doping has a great potential, if optimized, to provide structural stability during repeated cycling, thereby leading to superior cycling stability.</P> <P><B>Highlights</B></P> <P> <UL> <LI> Zr-doping increases the lattice volume of LiNi<SUB>0.5</SUB>Mn<SUB>1.5</SUB>O<SUB>4–δ</SUB> (LNMO). </LI> <LI> More reversible structural changes during repeated cycling occur in Zr-doped LNMO. </LI> <LI> Zr-doping improves capacity retention of LNMO spinel between 5.0 and 1.0 V. </LI> </UL> </P>

고령사회를 대비한 노년준비교육 프로그램에 관한 연구

김병숙(Kim, Byung-Sook),양옥남(Yang, Ok-Nam),강인(IKang, n),한은주(Han, Eun-Joo),원미희(Won, MiHee) 한국노년학회 2005 한국노년학 Vol.25 No.2

본 연구는 노년준비교육 프로그램에 대한 요구도 조사, 프로그램의 개발 및 실시 그리고 프로그램의 효과 검증을 통한 평가를 목적으로 수행하였다. 이를 위해 사회복지학, 가족학, 직업학 등의 노인 관련 전문가를 중심으로 연구진을 구성하였다. 요구도 조사는 20대 이상 남녀 560명을 대상으로 실시하였으며, 이를 바탕으로 본 연구에서는 20대와 60대 이상 두 집단을 대상으로 프로그램의 개발, 실행 및 평가가 이루어졌다. 그 결과 노년준비교육 프로그램은 생애단계와 노인의 전반적 이해, 경제적 준비, 직업, 건강증진 및 유지, 죽음과 사별대비, 심리적 관점, 자기완성의 추구, 노년기의 사회참여, 원만한 가족관계, 노인주거의 10개 영역으로 분류되었으며, 각 영역별로 교육의 효과가 유의미한 것으로 나타났다. Korea is expected to become an "aged society" in approximately fifteen years. In order to prepare Korean society for this "aged society", the government and social organizaitons need to offer a life stage preparation manual for the young, middle-aged, and aging populations, as well as providing support structures to guide them through this transition. Researchers have developed a Life Stage Preparation Program, based on surveys and experiments conducted to assess needs and appraise effectiveness. To accomplish the goal of this research, the team has been composed of specialists from the fields of social welfare, family studies, occupational studies, and gerontology. The Life Stage Preparation Program consists of ten areas: understanding ageing issues, sustaining and improving health, psychological issues, continuing education, family relations, social activities, financial preparation, occupations, shelter, and mortality. The effectiveness of the program surveyed on age group of 20s and 60s resulted in nine areas. The Life Stage Preparation Program needs to be operated as a life long education program.

플럼코트 ‘하모니’ 과실의 5-ALA 처리에 의한 수확 후 품질 특성

최현진(Hyun Jin Choi),남은영(Eunyoung Nam),최미희(Mihee Choi),도경란(Gyung Ran Do),권정현(Junghyun Kwon),최인명(Inmyung Choi) 한국원예학회 2020 한국원예학회 학술발표요지 Vol.2020 No.11