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개구리 心臟에서 Ouabain 效果에 미치는 Serotonin의 影響
이태준,송태효,이태준 의과학연구소 1989 全北醫大論文集 Vol.13 No.2
The influence of 5-hdroxytryptamine and / or cyproheptadine on the action of ouabain was investigated in the isolated frog heart or in the whole fros. 1. LD_50 of ouabain was 2.88㎍/10g in control group. 2. Low doses(100 or 300 ㎍/10g) of 5-hydroxytryptamine increased LD_50 of ouabain, but high dose of the drug decreased LD_50 of ouabain. However, the effect of 5-hydroxytryptamine was blocked by cyproheptadine. 3. Ouabain induced dose-dependent biphasic response ; at low doses(10^-7-10^-6M) ouabain decreased contractile force of myocardium, while high doses of the drug(above 3X10^-6M) increased oncractile force as well as decrease of heart rate. 4. 5-hydroxytryptamine inhibited the negative inotrophic and bradycardiac effects of ouabain, but cyproheptadine did not affect the effects of 5-hydroxytryptamine. From the above results, it is suggested that there are two dose-related ouabain-sensitive sites in frog heart, and bradycardiac effect of ouabain is different from that of extracardiac regions.
틱톡 챌린지(TikTok Challenge) 참여가 탄소 중립에 대한 평가에 미치는 영향: 틱톡 챌린지 태도와 정부 신뢰의 조절된 매개효과를 중심으로
이태준,노환호,이병관 한국소비자·광고심리학회 2022 한국심리학회지 소비자·광고 Vol.23 No.2
This study was conducted to verify the effect of participation through social media in promoting and participating in campaigns used to increase citizens’ evaluation of carbon-neutral policies. Social media is a representative medium of the MZ generation and has the strength of real-time interaction and free exchange of opinions. Therefore, this study attempted to examine the effect of participation in the carbon neutral campaign on improving people’s perception on TikTok among social media. As a result of the study, it was confirmed that participants in the TikTok challenge had a higher evaluation of carbon neutrality than those in the non-participating condition (Hypothesis 1), and that the effect on the evaluation of carbon neutrality was mediated by the TikTok challenge attitude (Hypothesis 2). Finally, as a result of confirming the moderating effect of trust in government as a way to support the effect of participating in the campaign, it was confirmed through the verification of the moderated mediating model that government trust can function as a supportive way to raise awareness even for those who did not participate in the TikTok Challenge (Hypothesis 3). These findings imply that participation in social media campaigns can be an effective strategy in promoting carbon-neutral policies to protect the environment, which is an important global issue. 본 연구는 시민들의 탄소 중립에 대한 평가를 높이는 방안으로 소셜 미디어 챌린지 참여가 미치는 영향을 검증하고자 하였다. 소셜 미디어는 MZ 세대의 대표적인 매체로 실시간 상호작용과 자유로운 의견 교환이라는 강점을 갖는다. 이에 본 연구에서는 소셜 미디어 중 틱톡(TikTok) 어플을 통한 탄소 중립 캠페인 참여가 사람들의 인식 개선에 미치는 영향을 검토하고자 하였다. 연구 결과 틱톡 챌린지 참여 조건의 참가자는 비참여 조건의 참가자에 비해 탄소 중립에 대한 평가가 높았으며(가설 1), 탄소 중립에 대한 평가에 미치는 영향은 틱톡 챌린지 태도에 의해 매개된다는 것을 확인할 수 있었다(가설 2). 끝으로 캠페인 참여의 효과를 조절하는 변인으로 정부 신뢰를 확인한 결과 정부 신뢰는 틱톡 챌린지에 참여하지 않은 사람들에게도 탄소 중립에 대한 인식을 높여주는 요인임을 조절된 매개모형의 검증을 통해 확인할 수 있었다(가설 3). 이와 같은 연구 결과는 전 지구적으로 중요한 이슈인 환경 보호를 위해 탄소 중립 정책을 홍보하면서 소셜 미디어 캠페인 참여가 효과적인 전략이 될 수 있다는 것을 시사한다.
이태준,권정혜 한국임상심리학회 2007 Korean Journal of Clinical Psychology Vol.26 No.2
The purpose of this study was to examine school adjustments of adolescents with abuse experience of 4 types of abuse (parental neglect, parental antipathy, physical abuse, sexual abuse) and explore protective factors which might alleviate negative effects for each abuse type. 785 high school students who lived in Seoul and Kyoungki Province completed the questionnaires assessing abuse experience (CECA-Q) and locus of control and social support. 380 adolescents reported that they had an abuse experience. It was demonstrated that adolescents with abuse experience showed significantly lower score on school life adjustment than those with no abuse experience. Multiple regression analysis demonstrated that an interaction between parental neglect and social support, an interaction between parental neglect and internal locus of control, and an interaction among parental neglect, social support, and internal locus of control explained significantly school adjustment. However, the result showed that social support alone didn't moderate school life adjustment of adolescents who has abuse experience. Internal locus of control and social support were shown to play a role as protective factors only in the parental neglect type among four abuse types.