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김수연(Soo Yun Kim),강병구(Byung Gu Kang),김득성(Deuk Sung Kim) 한국아동가족복지학회 1998 한국가족복지학 Vol.3 No.2
The purpose of this study was to compare between normal family and three types of problem family by Circumplex Model. Two central dimensions of Circumplex Model are cohesion and adaptability. The Circumplex Model`s main hypothesis is the curvilinear of cohesion and adaptability. The ideal level of cohesion is not 「disengaged」 and 「enmeshed」 but 「connected」 . The ideal level of adaptability is not 「rigid」 and 「chaotic」 but 「flexible」 . The ideal level of cohesion and adaptability is balanced level. Major findings were as follows : Normal family was 「balanced 」, three types of problem family was extremed on cohesion and adaptability. Specially Adolescence-delinquency family was 「disengaged」 and 「chaotic」 , and clinical family was 「enmeshed」 and 「rigid」 . Problem-behavior family did not have effective communication skills. Normal family functioned more effectively than problem family.
오스테나이트계 TP347 스테인레스강의 파괴저항특성 평가
강병구,김수용,석창성 成均館大學校 科學技術硏究所 1999 論文集 Vol.50 No.1
The objective of this paper is to evaluate the material properties of TP347 stainless steel and their associated welds and the welded joint of the carbon steel and the stainless steel manufactured for primary coolant system of Ulchin 3 & 4 nuclear power plants. The effect of various parameters such as pipe size, welding method, chemical composition, crack plane orientation, metallography and fractography on the material properties were discussed. Test results showed that the effect of pipe size on fracture toughness was negligible while the effect of welding method on fracture toughness was significant. In addition, the drop of fracture toughness in the field fabrication weld of TP347 stainless steel is probably due to the large amount of σ-phase precipitated on the δ-ferrite boundary and the large size dimple.