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분말 합금법으로 제조된 Fe-Cr-Al 금속 다공체의 구조, 미세조직 및 기계적 특성
김규식,강병훈,박만호,윤중열,이기안,Kim, Kyu-Sik,Kang, Byeong-Hoon,Park, Man-Ho,Yun, Jung-Yeul,Lee, Kee-Ahn 한국분말야금학회 2020 한국분말재료학회지 (KPMI) Vol.27 No.1
The Fe-22wt.%Cr-6wt.%Al foams were fabricated via the powder alloying process in this study. The structural characteristics, microstructure, and mechanical properties of Fe-Cr-Al foams with different average pore sizes were investigated. Result of the structural analysis shows that the average pore sizes were measured as 474 ㎛ (450 foam) and 1220 ㎛ (1200 foam). Regardless of the pore size, Fe-Cr-Al foams had a Weaire-Phelan bubble structure, and α-ferrite was the major constituent phase. Tensile and compressive tests were conducted with an initial strain rate of 10<sup>-3</sup>/s. Tensile yield strengths were 3.4 MPa (450 foam) and 1.4 MPa (1200 foam). Note that the total elongation of 1200 foam was higher than that of 450 foam. Furthermore, their compressive yield strengths were 2.5 MPa (450 foam) and 1.1 MPa (1200 foam), respectively. Different compressive deformation behaviors according to the pore sizes of the Fe-Cr-Al foams were characterized: strain hardening for the 450 foam and constant flow stress after a slight stress drop for the 1200 foam. The effect of structural characteristics on the mechanical properties was also discussed.
수증기 메탄 개질 반응을 이용한 수소 생산용 Ni-Cr-Al 다공체 지지 촉매의 제조, 기계적 안정성 및 수소 환원 효율
김규식,강태훈,공만식,박만호,윤중열,안지혜,이기안,Kim, Kyu-Sik,Kang, Tae-Hoon,Kong, Man Sik,Park, Man-Ho,Yun, Jung-Yeul,Ahn, Ji Hye,Lee, Kee-Ahn 한국분말재료학회 (*구 분말야금학회) 2021 한국분말재료학회지 (KPMI) Vol.28 No.3
Ni-Cr-Al metal-foam-supported catalysts for steam methane reforming (SMR) are manufactured by applying a catalytic Ni/Al<sub>2</sub>O<sub>3</sub> sol-gel coating to powder alloyed metallic foam. The structure, microstructure, mechanical stability, and hydrogen yield efficiency of the obtained catalysts are evaluated. The structural and microstructural characteristics show that the catalyst is well coated on the open-pore Ni-Cr-Al foam without cracks or spallation. The measured compressive yield strengths are 2-3 MPa at room temperature and 1.5-2.2 MPa at 750℃ regardless of sample size. The specimens exhibit a weight loss of up to 9-10% at elevated temperature owing to the spallation of the Ni/Al<sub>2</sub>O<sub>3</sub> catalyst. However, the metal-foam-supported catalyst appears to have higher mechanical stability than ceramic pellet catalysts. In SMR simulations tests, a methane conversion ratio of up to 96% is obtained with a high hydrogen yield efficiency of 82%.
김규식(Kyu-Sik Kim) 영남신학대학교 2011 신학과 목회 Vol.36 No.-
As marriage is an institution established by God, there is God's intention in marriage. Husbands and wives should pursue satisfaction and happiness through their marriage life, but human satisfaction and happiness cannot be the essence of marriage. Nevertheless, husbands and wives pursue satisfaction and happiness as crucial conditions of their marriage life mainly because churches have neglected value education on the essence of marriage. The seriousness of contemporary marital distress is looming as a crisis of churches consisting mainly of families. The collapse of a family through divorce is a crisis not only to the family but also to the church. The present researcher assumed that marital distress and divorce are caused by the absence of marital education in churches, and wrote this thesis in order to emphasize that churches should carry out actively marital education based on Christian values. The purpose of this study was to find core values for marital education in Martin Luther's view on marriage. There have been many studies on Luther in Korea, but few of them were about his ideas on family and marital relationship. Thus, this study is expected to trigger various subsequent studies on Luther's understanding of family and husband wife relationship. The researcher analyzed Luther's view on marriage from the viewpoint of God's gift and secularity, and divorce from the viewpoint of God's love and forgiveness. In addition, this study suggested two conditions for maintaining marital stability, which are the vocation of serving the spouse based on God's calling and the office as a pastor and teacher for parenting. Based on the results of this study, lastly, the researcher sorted out and presented core values for church based marital education. Marital education based on the results of this study is expected to have a positive effect on husbands and wives' faith oriented thinking and their enhanced marital satisfaction and stability.
부부문제에서 분노의 유발 원인과 대처 전략에 대한 연구
김규식(Kyu Sik Kim) 영남신학대학교 2009 신학과 목회 Vol.32 No.-
The anger itself is a kind of neutral emotion. However, dysfuctional anger expression in the couple relationship can facilitate severe results such as marital distress. family violence, and divorce. Thus, this study aimed at finding the cause and treatment strategies for anger in marital distress. I found two kinds of angers facilitating marital distress through this study. First, is the dysfunctional behaviors(DB) accelerating partner's anger. Second, is the dysfunctional cognitions(DC) accelerating our own anger. The DB had four main parts: the skill deficiencies of couple communications, problem solving, anger expressions, and aversive control systems. The DC had three main parts: irrational belief, dysfunctional cognitions, and selective perceptions. The effective treatment strategy to eliminate anger in the marital distress was the cognitive behavioral approach(CBA). The main target of the CBA was to change the DB and DC to functional behaviors and cognitions.
인성교육의 장으로서 생활관 기능 확장을 위한 방안 연구
김규식(Kyu-Sik Kim) 영남신학대학교 2016 신학과 목회 Vol.46 No.-
This study is about strategies for enhancing functions of residence as a field for character building education. As the residence in its characteristics is a space for students who lived a life with different culture, environment and values to interact one another, it can be the most appropriate place to maximize character building education of students by utilizing characteristics of residence if educational intention of college is to be reflected fully. The author took Alfred Adler’s individual psychology as a theoretical background for directions of character building education. In terms of individual psychology, human’s basic motives are regarded as the pursuit of belonging and community feeling, and because it may be correspond to the target of ultimate pursuits of character building education. Though character building education may be available for people in all ages, this study was in search of strategies for character building education centered on the residence applicable for undergraduate students who are in the early adult stage of development after high school graduation. In detail, this study discussed strategies for enhancing functions of the residence as directions of character education for them and a field of character education, and they are firstly, selection of freshman students through residence character education selection, secondly, development of curriculum focusing on the residence and thirdly, the relationship within the residence and establishment of care system. It is necessary to benchmark domestic dormitory models in pursuit of residential colleges. At the same time, in reference to education targets that foreign brand name universities have pursued for a long time, it is also necessary to constantly search for strategies to maximize functions of dormitory as a field of character building education appropriate for characteristics of our school.
인지행동적 부부훈련이 부부문제감소와 부부관계향상에 미치는 효과
김규식(Kyu Sik Kim),김성회(Seong Hoi Kim) 한국상담학회 2001 상담학연구 Vol.2 No.1
The purpose of this study was to examine the effect of the Cognitive Behavioral Training(CBT) on decreasing marital distress, and enhancing couple relationship. CBT was focused on decreasing couple dysfunctional behaviors and cognitions, and enhancing couple satisfaction and stability. In order to examine th effect of this training, two kinds of measuring scales were used, Marital Distress Scale(MDS) and Marital Relationship Scale(MRS). MDS had two subscales: Behavioral Marital Distress Scale(BMDS) measuring couple dysfunctional extent of reciprocity, communication skills, problem-solving, and anger expressions, and Coginitive Marital Distress Scale(CMDS) measuring the couple dysfunctional extent of perceptions, attributions, expectancies, assumptions, standards of marital distress. MRS had two subscales: Couple Satisfaction Scale(CSS) measuring the extent of couple satisfaction, and Couple Stability Scale(CSTS) measuring the extent of couple stability. The subjects in this study were 18 married volunteers who wanted to enroll in the training group. All subjects were trained for four 240 minute sessions for four weeks. All subjects received the pre-test, post-test, and followup-test seven weeks later by using the MDS and MRS. The conclusions obtained from the results and discussions of this research are as follows: 1.CBT was effective in decreasing behaviors of marital distress. 2. CBT was effective in enhancing couple relationship(couple satisfaction and couple stability).