그린카본을 이용한 하수슬러지 연료탄 제조 및 연료특성에 관한 연구

박준수(Jun-Su Park),조순행(Soon Haing Cho),송현준(Hyun-Jun Song),어우선(Woo-Seon Eo),박기완(Ki-Wan Park),문장수(Jang-Soo Moon),박진희(Jin-Hee Park),박세준(Se-Joon Park) 한국에너지기후변화학회 2017 한국에너지기후변화학회 학술대회 Vol.2017 No.5

RSSI 기반 다중 노드 거리 측정 시스템 설계 및 구현

박기완(Kiwan Park),허준(Jun Hur),무하마드 하리스(Muhammad Haris),남해운(Haewoon Nam) 한국통신학회 2023 한국통신학회 학술대회논문집 Vol.2023 No.2

스티어링 휠 다이나믹 댐퍼의 방진고무 강성 파라메터 연구

박기완(Kiwan Park),도현철(Hyuncheol Do),남재현(Jaehyeon Nam),박상준(Sangjun Park),강재영(Jaeyoung Kang) 한국자동차공학회 2017 한국자동차공학회 학술대회 및 전시회 Vol.2017 No.11

격자 패턴 마찰재의 제동시스템 스퀼 FE해석 연구

박기완(Kiwan Park),남재현(Jaehyeon Nam),최성진(Sungjin Choi),남찬혁(Chanhyuk Nam),서선동(Sundong Seo),강재영(Jaeyoung Kang) 한국소음진동공학회 2017 한국소음진동공학회 논문집 Vol.27 No.7

The Comparative Study on the Satisfaction of the Physical Therapy facilities in the front Military hospitals and Devision

박기완(Giwan Park),정지혜(Jihye Jung),이승원(Seungwon Lee) 물리치료재활과학회 2021 Physical therapy rehabilitation science Vol.10 No.2

Objective: This study is about the physical therapy facilities and environmental and service satisfaction of patients visiting in thefront military hospitals and divisions. Design: Survey studyMethods: Prior to this survey, 28 users of the front division and military hospital were surveyed in advance to verify the surveythrough reliability analysis. For this survey, 1,300 questionnaires were distributed to seven frontline divisions and three militaryhospitals, of which 578 military hospitals and 479 divisions were collected. Among them, 1,042 pieces of data were used for theanalysis, excluding 15 questionnaires that exceeded the research period of the division. Analysis methods used Cronbach-αandmultiple regression for mean comparison analysis, factor analysis for validation, and reliability verification to verify differencesbetween groups. Results: As a result of the satisfaction analysis, the division s stage satisfaction was higher than that of military hospitals, and as a result of analyzing the satisfaction items by sector, accessibility, re-visit doctors, and professionalism accounted for a large portionin the field of physical therapy services. As a result of a regression analysis, the factors that affect the satisfaction of physicaltherapy had the greatest impact on facility and environmental satisfaction, and expertise in physical therapy services. Conclusions: In the future, it will be necessary to improve the comfort of the physical therapy room and the expertise of physicaltherapy in order to improve the satisfaction level of physical therapy at military medical facilities.

패드 접촉강성 변화에 따른 FE스퀼해석법 및 실험 검증

박기완(Kiwan Park),남재현(Jaehyeon Nam),강재영(Jaeyoung Kang) 대한기계학회 2017 大韓機械學會論文集A Vol.41 No.5

본 논문은 스퀼 시험을 통해 압력 변화에 의해 발생하는 스퀼 소음을 계측하고, 발생된 스퀼 소음을 FEM 복소수 고유치 해석으로 모드연성 불안정성을 구현하였다. FEM 해석에서 압력 변화에 따른 스퀼주파수 변화를 근사하기 위해서 접촉강성 변화에 의한 스퀼 민감도를 예측하고, 잠재적인 스퀼 모드를 유추하였다. 스퀼 실험 결과 1 ㎑, 2.5 ㎑, 3.5 ㎑, 4 ㎑ 근방에서 스퀼 소음이 발생하였으며, 압력이 증가함에 따라 스퀼 주파수가 다소 증가되었다. FEM 해석 결과 접촉강성 변화에 따른 유사한 스퀼모드 및 민감도를 예측하였고, 해석시 접촉강성 변화가 스퀼실험에서의 압력증가 효과를 근사할 수 있음을 보였다. In this study, squeal noise with respect to pressure variation is measured by a lab-scaled brake dynamometer and estimated by a complex finite element (FE) eigenvalue analysis. From the FE eigenvalue sensitivity analysis, unstable frequencies occur due to a mode-coupling mechanism and are found to change with variation in contact stiffness. In the experiment, squeal frequencies near 1 ㎑, 2.5 ㎑, 3.5 ㎑, and 4 ㎑ are increased with pressure variation. The sensitivity of squeal modes to contact stiffness variation obtained from the FE analysis is shown to approximate the variation of squeal frequencies under pressure variation in the experiment.

兩棄齋 安瑞羽 文學 硏究 : 命에 대한 인식과 대응을 중심으로

박기완 ( Park Ki-wan ) 민족문학사학회·민족문학사연구소 2022 민족문학사연구 Vol.78 No.-

본고는 兩棄齋 安瑞羽(1664∼1735)의 전기적 요소를 파악하고 이를 『兩棄齋遺稿』의 내용 파악과 연관 지어 작가론의 관점에서 그의 문학 세계를 조망하는 것을 목표로 하였다. 그의 문집인 『兩棄齋遺稿』(국립중앙도서관 소장)는 上권은 없고 下권과 속집으로만 구성된 필사본 2책으로 별도의 서발문은 존재하지 않는다. 下권은 오언고시 23수, 칠언고시 56수, 잡문 28편으로 이루어져 있고 속집은 詩 357수, 賦 5편, 文 24편으로 이루어져 있다. 문집에는 자신의 인생을 돌아보며 느끼는 감정을 솔직하게 드러내는 시와 불우한 처지에도 불구하고 자신의 지향을 밝히는 산문이 많았다. 이에 본고는 문집 전체를 관통하는 핵심어를 命이라 보았다. 그리하여 작품 속에 드러나는 안서우의 命에 대한 인식과 대응을 파악하고, 그의 운명론이 어떻게 시와 산문에 일관되게 반영되고 있는지를 살펴보고자 하였다. 述懷詩와 雜詠에서 그는 자신의 운명과 처지에 대해 솔직하게 노래하는 경우가 많았는데 본고는 孔孟의 운명론과 장자의 운명론을 살펴본 후에 시에 나타나는 그의 운명론과 지향에 대해 파악하고자 하였다. 그 결과 그는 ‘작은 것에 다가가기’를 통해 차츰 자연과의 합일을 추구하며 즐거움과 위안을 얻는 등 자신만의 해법을 찾아낸 것을 확인할 수 있었다. 산문에서는 불우와 은거에 대한 그 자신의 대응과 태도를 살피고자 하였는데 그 결과 그는 노장적 은거에 유학의 修와 性의 개념을 더하여 자기 나름의 창의적인 방식으로 유가와 노장 사이의 간극을 메우고자 하였음을 알 수 있었다. This thesis aims to investigate the biographical aspect of Yangkijae Ahn Seo-Woo(兩棄齋 安瑞羽, 1664~1735) and explore his literature in terms of author theory derived from the association between his biography and contents of 『Yangkijaeyugo(兩棄齋遺稿)』. 『Yangkijaeyugo』, a collection of his literary works, is a manuscript comprising the second volume of a set of two and an appendix. However, the first volume was lost and the annexed introduction does not exist. The second volume comprises 23 pentasyllabic lines, 56 heptasyllabic lines and 28 essays. The appendix comprises 357 poems, 5 odes, 24 essays. His collection features numerous poems that show his honest feelings while retrospecting his life and essays that present his ideals he had upheld despite the miserable circumstances surrounding him. In his regard, in this thesis, ‘fate’ was adopted as a keyword spanning the whole works in his collection. Therefore, this thesis aims to comprehend his cognition on fate which can be grasped in his works and also to investigate how his fatalism is consistently reflected in poems and proses. In reminiscence poems and miscellaneous poems he honestly portrayed his fate and miserable condition, by which this thesis intended to investigate the fatalism of Confucius and Mencius and elucidate the fatalism and the ideals appearing in poems of Ahn Seo-Woo. In consequence, it could be confirmed that he pursued to be in communion with nature through ‘approaching small things’ leading to joy and consolation, which can collectively be regarded as his own solution. In various genres of proses, his own way of response and attitude on unfortunateness and seclusion were examined, which revealed that he tried to fill the gaps between Confucious philosophy and the thought of Laozi and Zhuangzi in his original way by adding one of the Confuscian notion ‘self-cultivate’ and ‘human nature’ on seclusion.

Polyamide4(PA4)-Polyurethane(PU)-PA4 삼블록 공중합체의 제조 및 특성

박기완(Ki Wan Park),김동현(Dong Hyun Kim),김형중(Hyung Joong Kim) 한국고분자학회 2014 폴리머 Vol.38 No.1

Methylene diphenyl diisocyanate(MDI)와 poly(tetramethylene glycol)(PTMG)로부터 양말단에 isocyanate(NCO)작용기를 가진 polyurethane(PU) prepolymer를 제조한 다음 이를 개시제로 하고 potassium pyrrolidonate를 촉매로하여 2-pyrrolidone을 음이온 개환중합함으로써 최종적으로 양 끝에 polyamide4(PA4)가 단단한 블록이 되고 PU가부드러운 블록이 되는 PA4-PU-PA4 형태의 삼블록 공중합체를 합성하였다. 그리고 공중합체내 각각 PA4 블록과PU 블록의 분자량을 변화시켜 이들의 변화가 여러 가지 성질에 미치는 영향을 확인하였다. 결과적으로 PA4 블록으로 인해 원래의 PU 탄성체보다 용융온도(Tm)는 크게 상승하였고 PA4 블록의 분자량이 증가함에 따라 초기 탄성률과 인장강도는 크게 증가하였다. 한편, PU 블록의 분자량이 증가되면 파단신율이 증가하였지만 초기 탄성률과 인장강도는 감소하는 전형적인 블록 공중합체형 탄성체의 성질을 나타냈다. Polyamide4 (PA4)-polyurethane (PU)-PA4 triblock copolymers were synthesized by isocynated (NCO)-terminatedPU prepared from 4,4`-diphenyl methane diisocyante (MDI) and polytetramethylene glycol (PTMG) as an initiatorand potassium pyrrolidonate (P-py) as a catalyst for anionic ring opening polymerization of 2-pyrrolidone. Subsequently copolymer was controlled to contain different or same molecular weight of PA4 hard block with same ordifferent molecular weight of PU soft block in order to investigate the effects of those differences on various propertiesof triblock copolymers as a thermoplastic elastomer. As the results shown in typical properties of block copolymeric elastomers,the mechanical strength and melting point (Tm) of the copolymers increased with an increase in molecular weightof PA4 block while the elongation at break increased with an increase in that of PU block.

미세공음극 방전을 이용한 새로운 응용기술 개발

박기완(KiWan Park),이태일(TaeIl Lee),백홍구(HongKoo Baik) 한국생산제조학회 2006 한국공작기계학회 춘계학술대회논문집 Vol.2006 No.-

미세공음극 방전은 다양한 전극의 제조 방법을 통하여 여러 가지 분야에 응용될 수 있는 가능성을 많이 가지고 있다. 미세공음극 방전은 기존 글로우 방전보다 더 효율적으로 이온/전자의 생성이 가능하고 그 형상의 특이함에 의하여 새로운 응용 분야를 개척해 낼 수 있다. 이에 다양한 미세공음극 방전 전극을 이용한 새로운 응용분야를 제안하고 그 가능성에 관한 검증 실험을 진행하였다.

수술실 간호사에서의 라텍스 알레르기

박기완(Kee Woan Park),박현정(Hyun Jeong Park),이준영(Jun Young Lee),김형옥(Hyung Ok Kim) 대한피부과학회 2000 대한피부과학회지 Vol.38 No.5

N/A Background:The prevalence of latex allergy has increased recently and health care workers are a known risk group for occupational allergy to latex gloves. Since latex allergy is a strong risk factor for perioperative anaphylactic reactions, operating room nurses should be screened before surgery. But there is no data or study of latex allergy in Korea. Objective:This study was aimed to assess the prevalence of type I and type IV allergy to latex gloves in a group of operating room nurses complaining symptoms related to latex glove wear and to evaluate the relationship between questionnaire responses and skin tests. Methods:Between January 1998 and July 1998, we evaluated 22 operating room nurses who reported symptoms suggestive of latex allergy. All were interviewed and underwent skin prick test with extracts of rubber gloves, scratch patch test with latex glove, rubber additives such as mercaptobenzothiazole, thiuram, mercapto mix and talcum powder. They were also underwent closed patch test with standard series and rubber additives series. Results:Of the 22 individuals involved, 15(68%) had been exposed to latex gloves for 3 months to 5 years and 7(32%) for 5 to 10 years. The average time of glove use was 23.2 h/week. Glove related symptoms which they complained were itching(95.4%), urticaria(45.5%), eczema(31.8%), redness(27.3%). One had atopic dermatitis and the others had no underlying disease including atopy, hand eczema, food allergy, dermographism etc. Most common allergens of standard patch test showing positive were nickel(36.4%), cobalt(27.2%), mercury(13.6%), thimerosal(13.6%). One nurse showed positive patch test to thiuram, one of the most common type IV allergens. Twenty one of the 22 individuals showed negative for skin prick test with latex solution. One who showed positive in skin prick test with latex solution had atopy and latex-specific IgE was demonstrated in this case. No one showed positive for scratch patch test with rubber additives and talcum powder. Conclusion:One of 22(4.5%) had type I immediate reaction to latex glove and 1 of 22(4.5%) had type IV delayed hypersensitivity to thiuram, one of rubber additives. And most of symptoms suggestive of latex allergy in operating room nurses would be due to irritation, not to type I and type IV allergy to latex gloves. It is likely that hand dermatitis and atopy may be risk factors for natural rubber latex allergy because one who showed positive in skin prick test with latex solution in this study had atopy and hand eczema. This result coincides with previous reports that hand dermatitis and atopy have been identified as risk factors for natural rubber latex allergy. (Korean J Dermatol 2000;38(5):616~621)