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1MW OTEC 구조물의 운동 응답에 대한 수치 및 모형시험 연구
권용주(Yong-Ju Kwon),남보우(Bo Woo Nam),김남우(Namwoo Kim),정동호(Dong-Ho Jung),홍사영(Sa Young Hong),김현주(Hyeon-Ju Kim) 한국해양공학회 2017 韓國海洋工學會誌 Vol.31 No.2
The 1MW OTEC (Ocean Thermal Energy Conversion) platform was designed for application in equatorial seas. In this study, the OTEC platform was investigated using numerical and experimental methods. An octagon-shaped OTEC platform was investigated using the Ocean Engineering Basin of KRISO. These experiments included various tests of regular waves, irregular waves and irregular waves with current (wave+current). The responses of the platform in regular waves showed good agreement between the numerical and experimental results, including the motion RAO, wave run up, and mean drift force. The peak period of heave and pitch motions were observed around 0.5 rad/s, and the effect of the total reflection was found under short wave conditions. The standard deviation (STD) of the platform motion was checked in irregular waves of equatorial and Hawaiian seas. The STD of the pitch was less than 4° different from the operability requirement under equatorial conditions and the surge STD of the wave frequency showed good agreement between the numerical and experimental results. The STD values of the surge and pitch were increased 66.6% and 92.8% by the current effects in irregular waves, but the pitch STD was less than 4° under equatorial conditions. This study showed that the STD of the surge was affected by spring effects. Thus, the watch circle of the platform and tension of the mooring lines must be evaluated for a specific design in the future.
과학영재교육센터 교육체제의 효율적인 운영방안에 관한 연구
권용주(Young-Ju Kwon),황석근(Suk-Geun Hwang),정원우(Won-Woo Chung) 한국영재학회 1999 영재교육연구 Vol.9 No.2
The purpose of this study was to suggest an advanced system for educating scientifically gifted children in the Center for Science Talented Education at Kyungpook National University. Several suggestions based on analysis of current identifying-process and instructional materials for scientifically gifted children were provided for advancing the educational system of the center. First, this study suggested a three-step procedure to identify procedure emphasized students reasoning skills as one of important characteristics of the gifted child. Second, this study provided an instructional model for developing hypothesis testing skills in scientifically gifted children. The model was originally based on Lawson's scientific reasoning processes and learning cycle mode. Third, this study also suggested an effective administration system of the Center for Science Talented Education. Further, this study suggested effective ways on research works for advancing the center, educating instructors, the cyber center for remote education, and international co-works for developing the gifted children's potential abilities.
대한모유수유한의학회 홈페이지의 모유수유 상담내용에 대한 질적연구 : 수유부에게 투입된 약물과 식품, 시술을 중심으로
권용주(Yong-Ju Kwon,),조선영(Sun-Young Cho) 대한모유수유한의학회 2019 대한모유수유한의학회지 Vol.5 No.1
Objectives: The Korean Academy of Breastfeeding Medicine has supported nursing mothers to address their concerns, provide the right knowledge, and provide positive breastfeeding with confidence. We will record this process and build a better counseling space. Methods: This study analyzed the contents of breastfeeding counseling posted on the bulletin board of the Korean Academy of Breastfeeding Medicine. Among the 128 questions published from December 10, 2013 to November 27, 2019. Results: 42 items were qualitatively analyzed, focusing on drugs, foods and procedures administered to breastfeeding mothers. The core concepts were derived through the subject analysis process. 5 questions about taking herbal medicines and herbal prescriptions in breastfeeding, 4 questions about food intake, 2 questions about taking out-of-life medications, 7 questions about taking medicines, 3 questions about procedures, 2 about cosmetics, and external medications 2 related items and 1 related item. Conclusion: Of the 128 breastfeeding-related inquiries posted on the Korean Academy of Breastfeeding Medicine s homepage bulletin board from 2013 to 2019, 42 questions were analyzed on drugs, foods, herbs and procedures performed on the body. The main focus was on the safety of those who were orally administered to the nursing mothers and the potential for percutaneous absorption, the effects of babies, and whether breastfeeding continued. Most were parallel to lactation. In the future, we considered the need for efforts to provide warmer, evidence-based, lactation counseling that did not neglect our traditional wisdom.
아티큘레이티드 타워 형태의 부이 구조물에 관한 파랑 중 운동응답 및 앵커 지지력에 관한 모형시험 연구
권용주(Yong-Ju Kwon),남보우(Bo Woo Nam),김남우(Nam Woo Kim),원영욱(Young-Uk Won),박인보(In-Bo Park),김시문(Sea-Moon Kim) 한국해양공학회 2019 韓國海洋工學會誌 Vol.33 No.3
A series of model tests was performed to evaluate the survivability of an articulated tower-type buoy structure under harsh environmental conditions. The buoy structure consisted of three long pipes, a buoyancy module, and top equipment. The scale model was made of acrylic pipe and plastic with a scale ratio of 1/22. The experiments were carried out at the ocean engineering basin of KRISO. The performance of the buoy structure was investigated under waves only and under combined environmental conditions from sea state (SS) 5 to 7. A nonlinear time-domain numerical simulation was conducted using the mooring analysis program OrcaFlex. The survivability of the buoy was analyzed based on three factors: the pitch motion, submergence of the top structure, and anchor reaction force. The model test results were directly compared to the results of numerical simulations. The effects of the sea state and combined environment on the performance of the buoy structure were investigated.
권용주(Yong-Ju Kwon),조선영(Sun-Young Cho) 대한모유수유한의학회 2021 nipple confusion,breastfeeding consultation,IBCLC, Vol.2 No.1
As the world experiences extreme upheaval due to COVID-19, there are much more considerations and decisions for breastfeeding mothers to consider when breastfeeding after childbirth. As a result, there is concern about a decrease in the rate of breastfeeding. Since December 2013, the Korean Academy of Breastfeeding Medicine has been continuously conducting breastfeeding-related consultations through the online consultation bulletin board. From timely questions such as whether it is possible, whether or not herbal treatment is safe during breastfeeding, the truth about food myths to avoid, life-wide problems such as hair perm or cosmetic botox treatment, vague concerns about insufficient milk supply, and ways to increase the actual amount of milk. Answers are all evidence-based and prepared by international breastfeeding consultants made up of IBCLCs and Korean Medical doctors.
치매의 한약물 치료에 대한 체계적 임상논문 고찰 -국내문헌을 중심으로-
권용주 ( Yong Ju Kwon ),조혜영 ( Hye Young Cho ),황의완 ( Wei Wan Whang ),조성훈 ( Seung Hun Cho ) 대한한방신경정신과학회 2010 동의신경정신과학회지 Vol.21 No.4
Objectives: This study aimed to evaluate any clinical studies regarding the herbal medicine for dementia focusing on Korean literature for future rigorous clinical research. Methods: Every article relevant to dementia was initially obtained from oriental medical related journals by electronic search at journal web sites or manual searches. Journals were limited to those registered with the Korea Research Foundation. From initial findings, two independent reviewers selected clinical articles and these articles were further analyzed separately by predefined criteria according to prospective and retrospective studies. For randomized controlled trial and non randomized controlled trial, quality assessment was also conducted. Results: From ninety seven patients initially obtained articles, twenty three patients were finally analyzed. One article was randomized controlled study, Four articles were prospective whereas eighteen patients were retrospective. In the qualitative evaluation of prospective articles, there was deduction regarding pre-calculated study size and prospective data collecting. Assessment measurement most frequently used was Mini Mental State Examination. The order of frequency of use herbs were identified. Conclusions: According to our study, the herbal medicine for dementia in general showed a positive effect in the cognitive aspects of dementia patients. Further well-designed randomized controlled studies should be conducted.
권용주(Kwon, Yong-Ju),주영은(Choo, Young-Eun) 대한생리학회 1970 대한생리학회지 Vol.4 No.2
In an attempt to better understand the effect of whole body irradiation on the spontaneous motility and oxygen consumption rate of the isolated mouse duodenum, a whole body X-irradiation of 1,000r. was given to albino mouse, and 1) the total length of contraction of isolated duodenum was recorded on kymograph every five minutes for 60 minutes, 2) glucose and 5-hydroxytryptamine(5-HT) were added to the reaction medium of Kreb s-Ringer-bicarbonate buffer(KRB) and response of the isolated duodenum to the drugs was observed, and 3) the oxygen consumption rate (QO<sub>2</sub>) of the isolated duodenum as well as the effect of glucose and 5-HT on QO<sub>2</sub> were measured by Warburg s standard manometric method and the comparison was made with the control(i.e. normal) group. The results thus obtained are summarized as follows. 1. The spontaneous motility of the isolated duodenum in the irradiated groups showed a significantly elevated pattern for the first 15 minutes comparing with the control. The motility, however, decreased after 15 minutes and remained so in the irradiated groups to the level of the nonirradiated control, but 24 hours post-irradiation group showed a tendency of an increased motility while one hour post-irradiation group showed no difference comparing with the control. 2. Addition of glucose produced generally elevated motility of the isolated duodenum in both irradiated and non-irradiated groups comparing with the control throughout the experiment, but no difference was observed in contractile amplitude between the irradiated and non¡¤irradiated groups. 3. When 5-HT was added to the irradiated group, the contractile amplitude of isolated duodenum was similar to that of the control, and 5-HT alone caused a slight increase of the motility comparing with the control. 4. The oxygen consumption rate (QO<sub>2</sub>) of the isolated duodenum was found to be ,slightly increased in one hour post¡¤irradiated group, but similar in 24 hour post¡¤irradiated group comparing with the control. Glucose produced a significant increase of QO<sub>2</sub> in all the groups, but 5-HT produced a tendency of decrease of QO<sub>2</sub> in all the groups.