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용액법에 의한 SiO₂-TiO₂-AgO 계 박막의 제조 및 특성에 관한 연구
김상문(Sangmoon Kim),심문식(MoonSik Shim),임용무(Yongmu Lim),황규석(Kyuseog Hwang) 한국안광학회 1998 한국안광학회지 Vol.3 No.1
Coating films of SiO₂TiO₂AgO have been prepared on soda-lime-silica slide glasses and single crystal silicon wafer by the sol-gel method using a spin-coating technique. Commercially available tetraethyl orthosilicate, titanium trichloride, and silver-nitrates were used as starting materials. The heat treatment temperature of this coating films was 500 properly, obtained from TG-DTA result. The films with thickness of 310 nm were prepared by 5 times coating. In the case of l0 mol% AgO, the film showed a crack-free and smooth surface, but the higher Ago content exhibited the more pin hole and the segregated cluster of AgO. The IR absorbance of the films decreased in the range of 400 nm to 700 nm with the increase of annealing temperature. And the reflectance of the coating films decreased and the color was changed light yellow to white yellow with the increase of Ago content.
동시행동에서의 보조행동 연구: 대면교제가 감정 상태에 미치는 영향을 중심으로
김상문 ( Sangmoon Kim ) 한국조사연구학회 2022 조사연구 Vol.23 No.4
Multitasking, especially secondary activity, has often been considered undesirable or trivial, and thus has not received much research attention. When it was examined, the focus was mostly limited to some prespecified types; multitasking that includes certain activities only. Analyzing the 2019 Korean Time Use Data, this study investigates the entire activity combinations and their durations. It also examines the effects of face-to-face social interaction as a secondary activity, on daily mood. The results show that the activity combinations that include social interaction account for almost a half of the entire multitasking, and that social interaction is mostly reported as a secondary, rather than a primary, activity. Moreover, the time on social interaction as a secondary activity is positively associated with daily mood, more so than social interaction as a singular or a main activity is. These imply that informal and casual interaction with confidants may provide individuals with more social support and may better protect them from stress. This study calls for more research interest in secondary activity.
포스터 발표 : 우수 중수도 및 기타 ; 산업별 수처리 설비 및 공정 특성에 관한 연구 - "순수" 생산을 중심으로 -
김상문 ( Shang Moon Kim ) 대한상하수도학회 2007 공동추계 학술발표회 논문집 Vol.2007 No.-
본 논고는 "순수"를 생산하기 위해 요구되는 수처리 단위공정 유형 및 공정 특성을 업종에 따라 살펴보았다. 그 결과, 산업 및 기업에 따라 다양한 수처리 설비 이용 및 공정설계로 표준공정을 제시할 수는 없었다. 하지만 산업에 따라 많이 이용되는 수처리 설비 이용 및 공정 특성을 발견할 수 있었다.