미세먼지 감축 행동 의도에 영향을 주는 요인 연구 : 계획된 행동이론(TPB)과 규범활성화 모형(NAM)의 통합 적용

구윤희(Yunhee Ku),안지수(Jisoo Ahn),노기영(Ghee-Young Noh) 한국언론학회 2020 한국언론학보 Vol.64 No.3

South Korea has the highest concentration of particulate matter(PM) on average among OECD countries. South Korean governmental agencies and local governments are putting forward strong regulatory measures to solve problems regarding PM pollution. Besides regulatory policies, citizens cooperation is essential in making the policies work. Especially, when it comes to environmental issues, which do not cause immediate damage to individuals, a more socio-cognitive approach should be considered to enhance individual’s participation. Along these lines, our focus is on individual’s cognitive processing for PM reduction from a perspective of environmental communication, which is differentiated from the prior PM-related literature(considering PM as a risk and dealing with individual’s risk perception and preventive intentions). Specifically, this study examined how moral norms affect the intention to decrease levels of PM, by integrating the theory of planned behavior(TPB) and the norm activation model(NAM). Individual moral norms have been emphasized in research on eco-friendly behaviors(behavioral intentions). For hypothesis testing, a total of 1,500 respondents from a national online survey company in South Korea participated in this study. The structural equation model was performed with the AMOS 18 program, and the maximum likelihood estimation was used. With the acceptable model fit from the structural equation modeling approach(CFI = .92, NFI = .92, RMSEA = .07), we found that attitude, self-efficacy and moral norms were positively related to behavioral intention. In other words, the hypotheses were supported within our integrated research model. On the other hand, there was no significant relationship between subjective norms and behavioral intention. Awareness of consequence, which was an antecedent variable to moral norms and subjective norms, showed a positive relationship with both types of norms. Last, the bootstrapping method confirmed an indirect effect of awareness of consequence on behavioral intention through moral norms. In sum, moral norms work with other constructs in the theory of planned behavior, and awareness of consequence can be a predictor for moral norms. The findings of this study indicate that, in order to implement the PM regulation policies effectively, it is necessary to help people maintain positive attitudes toward PM reduction actions, belief in their ability to participate in relevant regulations, and ethical awareness of environmental issues. The results regarding moral norms should be replicated in other environmental contexts or with different topics to conform the explanatory power of moral norms. The theoretical and practical implications and limitations are discussed in more detail.

Red Blood Cell Deformability and its Hemorheological Consideration

구윤희(Yunhee Ku),장리쥬엔(Lijuan Zhang),박명수(Myungsu Park),신세현(Sehyun Shin),서장수(Jangsoo Suh) 대한기계학회 2004 대한기계학회 춘추학술대회 Vol.2004 No.11

The suspension of hardened red blood cells (RBCs) differs from the suspension of normal RBCs with respect to their rheological behavior. The deformability of normal and hardened RBCs (obtained by heating blood at 49°C or by incubating RBCs in a solution of hydrogen peroxide) was measured with a slit diffractometer and RBC suspension viscosity was measured with a rotational viscometer. The peroxidetreated RBCs showed a significant decrease of the deformability and their suspension viscosity increased over a range of shear rates. The suspension viscosity of the heated RBCs, however, where the deformability is even lower than that of the peroxide-treated RBCs, was slightly higher than that of the normal RBC suspension in the high shear rates. The present study found that not all rigid cells cause an increase of blood viscosity at high shear rate, and therefore that decreased membrane deformability is not predictive of high-shear blood viscosity.

건강 정보 추구가 유방암 검진행동에 미치는 영향 연구

구윤희(Yunhee Ku),노기영(Ghee Young Noh) 한국디지털콘텐츠학회 2018 한국디지털콘텐츠학회논문지 Vol.19 No.7

This study was conducted to find ways to improve peoples perceptions to prevent and detect breast cancer. Health belief model(HBM) was used to examine the relationship between. risk perception of breast cancer, and benefit perception, and information seeking. In addition, the role of autonomous motives was included in the model. The results shows that the more people perceived cancer as dangerous, or perceived cancer screeing as beneficial, the more likely they seek relavant health information. Also, high autonomous motives showed positive effects on info seeking. Information seeking behaviors also had a positive impact on health screening intentions.

THE EFFECT OF TRAVERSAL VIBRATION ON THE VISCOSITY OF SUSPENSIONS INCLUDING BLOOD

Yunhee Ku(구윤희),Ji-Hyung Lee(이지형),Sehyun Shin(신세현) 대한기계학회 2002 대한기계학회 기타 간행물 Vol.2002 No.11

지역 기반 건강 캠페인이 시민 행동에 미치는 영향 연구 : 캠페인 참여와 만족도, 지각된 동기와 캠페인 동일시를 중심으로

구윤희 ( Yunhee Ku ),노기영 ( Ghee-young Noh ) 한국PR학회 2018 PR연구 Vol.22 No.3

Objectives This study tries to demonstrate the effects of participatory health campaign on participants’ cognitive process. The effect of participation level, satisfaction, and perceived campaign motive on campaign identification and citizenship behavior was examined. Methods A survey was conducted for the participants of ‘Pink Run Seoul 2017. Results Results showed that campaign satisfaction had a positive effect on campaign identification. Perceived campaign motive also affected identification. Campaign identification had a positive influence on campaign citizenship behavior. Campaign identification partially mediated the effect of satisfaction on citizenship behavior. On the other hand, the level of campaign participation and perceived campaign motive did not affect identification nor citizenship behavior. Conclusions At a time when participatory health campaigns continue to increase, the results of this study suggest the need to focus on the impact of campaign participation itself.

CSR 진정성 인식의 매개 효과 연구 : 기업 윤리 평판, CSR 지속성, CSR 투명성을 중심으로

구윤희 ( Yunhee Ku ),심재철 ( Jae Chul Shim ) 한국PR학회 2017 PR연구 Vol.21 No.4

Although the idea of CSR effects has been studied for a while, a little research addresses which variable is mediating CSR variables. This study is conducted to explore the mediating effect of CSR authenticity. An experimental study is designed to demonstrate that CSR authenticity is triggered by corporate ethical reputation, CSR consistency, and CSR transparency. Also, this study tests mediating effects of CSR authenticity on people responses with CSR initiatives. The result indicates that corporate ethical reputation, CSR consistency, and CSR transparency exercises influence on CSR authenticity. These CSR variables also made positive effects on consumer attitudes toward corporations as well as corporate attitudes which is mediated by CSR authenticity. These results mean that the authenticity is a core idea as a mediator that must be considered in order to build a successful CSR model. In short, This research verified precedent variables influencing the effectiveness of CSR and suggests a mediating model with factors impacting CSR activities.

자기효능감과 낙관적 편견이 유방암 검진 의도에 미치는 영향 연구

구윤희(Yunhee Ku),노기영(Ghee-Young Noh) 이화여자대학교 이화사회과학원 2018 사회과학연구논총 Vol.34 No.2

본 연구는 조기 발견과 완치의 상관관계가 큰 질병 중 하나인 유방암의 검진 의도에 관한 연구이다. 유방암 검진 의도의 선행 요인을 살펴보기 위하여 헬스 캠페인에 대한 수용자의 인지 과정에 대한 연구 중 큰 비중을 차지하고 있는 이론적 틀인 건강신념모형(HBM)을 활용하였다. 전국 단위 온라인 설문조사를 통해 총 719명의 여성을 대상으로 지각된 위험(취약성/심각성)과 검진 행동 평가(이익/장애), 자기효능감이 유방암 검진의도에 미치는 영향을 살펴보았다. 연구 결과, 지각된 취약성과 지각된 이익, 자기효능감은 검진의도에 긍정적인 영향을 미쳤으며 지각된 장애는 검진의도에 부정적인 영향을 미쳤다. 다음으로 HBM에서 간과되어 온 낙관적 편견의 조절효과를 살펴보았다. 낙관적 편견의 조절효과는 자기효능감과 지각된 장애에서 유의미한 것으로 나타났다. 본 연구의 결과를 유방암 건강검진 캠페인에 적용할 경우, 보다 효과적인 캠페인 수립의 참고 자료로 활용할 수 있을 것으로 기대된다. The purpose of this study is to examine the precedence factor of breast cancer screening intention. Breast cancer is the leading cause of cancer in women, but just few studies have applied health communication model to examine the intention. Health Belief Model was used to determine the intention of the breast cancer screening. Through online surveys, we examined the effects of perceived susceptibility, severity, benefits, barriers and self-efficacy on screening intention. As a result, perceived susceptibility, perceived benefits, and self-efficacy had a positive effect on screening intention. Perceived barriers had a negative effect on the intention. The second goal of the study is to examine the moderating effect of optimistic bias that have been overlooked in HBM. The moderating effect of optimistic bias was found to be significat in self-efficacy and perceived barriers.

Rheolocial reconsideration of blood viscosity

Yunhee Ku(구윤희),Gyoseon Yeom(염교선),Sehyun Shin(신세현),Jangsoo Suh(서장수) 대한기계학회 2006 대한기계학회 춘추학술대회 Vol.2006 No.11

Deformability of red blood cells(RBCs) plays an important role in microvascular flow system and impaired RBC deformability causes significant increase blood viscosity. The present study investigated the correlation of RBC rheological properties and blood viscosity. When RBC were heated at 49℃, the deformability was significantly reduced compared to that of control but the corresponding suspension viscosity was almost the same as the normal blood viscosity. This unexpected result was further studied with morphology of RBCs and tank-treading capability. It is found that heat treatment altered the geometry of RBC including cell shape and size, which result in reduction of blood viscosity. Conclusively, the effect of reduced RBC size suppresses the effect of decreased deformability on blood viscosity. Furthermore, we investigated the effect of tank-treading motion of RBCs on blood viscosity.

Comparison of two laser-diffractometries with measuring RBC deformability

Yunhee Ku(구윤희),Myungsu Park(박명수),Lijuan Jang(장리쥬엔),Sehyun Shin(신세현) 대한기계학회 2004 대한기계학회 춘추학술대회 Vol.2004 No.8

위험 정보 처리가 예방 행동 의도에 미치는 영향 연구 : 미세먼지 정보의 체계적 처리와 주변적 처리를 중심으로

구윤희 ( Yunhee Ku ),김활빈 ( Hwalbin Kim ),노기영 ( Ghee-young Noh ) 한국PR학회 2020 PR연구 Vol.24 No.2

Objectives This study examined how risk perception and negative affect response influenced preventive behavioral intention in the context of particulate matter. We tested the extended model by adding preventive behavioral intention to the risk information seeking and processing (RISP) model. Methods Data for this study came from a nation-wide online survey with an interview 1,500 respondents in South Korea. Using SEM analysis to examine key variables, we found that the goodness of fit to the model was acceptable. Results Findings showed that risk perception and negative affect responses were positively related to preventive intention through information insufficiency and systematic processing. Negative affect responses were not only a predictor for insufficiency, but also mediated the relationship between risk perception and insufficiency and between risk perception and information processing. Insufficiency was positively related to systematic processing and preventive intention. When insufficiency was low, there was a tendency to process information heuristically. Heuristic processing had a negative effect on preventive intention. Conclusions From our findings, in oder for risk perception of particulate matter to influence the preventive behavioral intention, it was effective to include perceived risk of particulate matter or provide information that triggered negative affect responses so that information was not processed heuristically.