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마찰교반 점용접(FSJ)을 이용한 자동차용 Al 합금의 접합성 평가
조현진,김흥주,천창근,장웅성,방국수,Cho, Hyeon-Jin,Kim, Heung-Ju,Cheon, Chang-Keun,Chang, Woong-Seong,Bang, Kook-Soo 대한용접접합학회 2006 대한용접·접합학회지 Vol.24 No.1
In an attempt to optimize friction spot joining process of Al alloys for automobiles, effects of joining parameters such as tool rotating speed, plunging depth, and joining time on the joints properties were investigated. A wide range of joining conditions could be applied to join Al alloys for automobile without defects in the weld zone except for certain welding conditions with a lower heat input. For sound joints without defects, tensile shear strength of joints was higher than acceptable criteria of tensile shear strength of resistance spot welded joints for aluminum.
심폐소생 금지 대리 결정에 대한 요양병원 노인 환자 가족의 인식 유형: Q 방법론적 접근
조현진(Cho, Hyeon Jin),강지연(Kang, Jiyeon) 한국간호과학회 2021 Journal of Korean Academy of Nursing Vol.51 No.1
Purpose: This study aimed to distinguish and describe the types of perceptions of do not resuscitate (DNR) proxy decisions among families of elderly patients in a long-term care facility. Methods: This exploratory study applied Q-methodology, which focuses on individual subjectivity. Thirty-four Q-statements were selected from 130 Q-populations formed based on the results of in-depth interviews and literature reviews. The P-samples were 34 families of elderly patients in a long-term care hospital in Busan, Korea. They categorized the Q-statements using a 9-point scale. Using the PC-QUANL program, factor analysis was performed with the P-samples along an axis. Results: The families’ perceptions of the DNR proxy decision were categorized into three types. Type I, rational acceptance, valued consensus among family members based on comprehensive support from medical staff. Type II, psychological burden, involved hesitance in making a DNR proxy decision because of negative emotions and psychological conflict. Type III, discreet decisions, valued the patients’ right to self-determination and desire for a legitimate proxy decision. Type I included 18 participants, which was the most common type, and types II and III each included eight participants. Conclusion: Families’ perceptions of DNR proxy decisions vary, requiring tailored care and intervention. We suggest developing and providing interventions that may psychologically support families.
조현진(Hyeon-Jin Cho),최중락(Joong-Lak Choi),이동권(Dong-Kwon Lee),김홍열(Heung-Youl Kim) 대한전자공학회 1992 대한전자공학회 학술대회 Vol.1992 No.10
This paper describes the auto-depth control system with depth control tank for low speed submersible vehicle that can be used for both near surface and deeply submerged keeping operations. The PDA control algorithm is used to design controller and adaptive notch filter is designed to eliminate the dominant frequency of seaway. The computer simulations demonstrate the excellent depth keeping performance of the controller under seaway effects.
조현진(Hyeon Jin Cho),김영삼(Young Sam Kim),정흥숙(Heung Sook Grace Chung) 한국복식학회 2004 服飾 Vol.54 No.4
In this thesis, the connectivity between the military culture in the Middle Ages and costumes by researching the effect on the clothing in the Middle Ages of the culture of knight from the 11th century to middle of the 15th century was tried to be recognized. The culture of knight was widely divided into 4 articles - Chivalry. Tournamemt. The equipment of knight, Heraldry - and then researched. The conclusion after researching the influence of the culture of knight upon the clothing in the Middle Age in the above is as follows. Regarding the clothing, the military culture such as the crusader war, armor, and heraldry was popularized over the entire Middle Ages as the military-look style, and regarding the ornament the result of the crusader war caused the introduction of the Eastern civilization and development of the commerce and industry, and also trade, and consequently the ornament became luxurious. Regarding the footwear, when seeing the Gothic shoes, it can be found that it is similar with the knight`s shoes made of the metal. As seen in the above, it can be recognized that the culture of knight caused the huge influence upon the whole politics, culture, and society in the Middle Ages as well as upon the costumes.