• 한국엔터테인먼트산업학회논문지
• /
• 제15권4호
• /
• pp.287-297
• /
• 2021

본 연구는 응급실 간호사의 직무스트레스, 건강상태, 건강증진행위, 재직의도의 관계를 알아보고, 재직 의도에 영향을 미치는 요인을 확인하고자 시도되었다. 연구대상은 G광역시 15개 응급실에 6개월 이상 근무하는 간호사 155명이다. 자료수집기간은 2020년 10월 15일부터 2020년 11월 3일까지 설문조사를 이용하여 이루어졌다. 연구결과, 대상자의 직무스트레스와 건강증진행위(r=-0.310, p=<.000), 직무스트레스와 재직의도(r=-0.220, p=.006), 건강상태와 건강증진행위(r=-0.448, p=<.000), 건강상태와 재직의도(r=-0.296, p=<.000)는 음의 상관관계를 나타내었고, 직무스트레스와 건강상태(r=0.368, p=<.000), 건강증진행위와 재직의도(r=0.229, p=.004)는 양의 상관관계가 있는 것으로 나타났다. 재직의도에 영향을 주는 요인은 영적 건강상태(β=-0.401, p=.000), 업무량 과중에 따른 스트레스(β=-0.184, p=.016), 피로감(β=-0.191, p=.018), 사회적 건강상태(β=0.203, p=.043)로 나타났다. 회귀모형의 설명력은 22.7%였다. 따라서 응급실 간호사의 재직의도를 높이기 위해서는 건강상태를 증진하고 업무량을 조절함으로써 직무스트레스를 감소하며, 피로를 감소할 수 있는 기관의 적극적인 관심과 중재프로그램 개발이 필요하다.

• 분석과학
• /
• 제12권5호
• /
• pp.387-396
• /
• 1999

역상 액체크로마토그래피에서 몇가지 Co(II)-dithiocarbamate(DTC)의 머무름 거동을 고찰하였다. 얻어진 머무름 자료들을 van't Hoff plot하여 킬레이트가 이동상으로부터 정지상으로 전이하는 엔탈피와 엔트로로피를 각각 계산하였다. 엔탈피값에 대한 In k'의 의존성을 조사한 결과 이동상중 유기 용매의 비가 증가할수록 감소하였다. 그리고 $-{\Delta}H^0$와 In k를 도시한 직선의 기울기로부터 구한 보정 온도(${\beta}$)는 765.3-888.5 K 범위이었다. 따라서 DTC 킬레이트들의 머무름 거동은 온도변화에 무관하게 일정하며, 주로 소용매성 효과에 영향을 받는다는 사실을 확인하였다. 아울러 머무름 실험식 $log\;k^{\prime}=log\;{k_w}^{\prime}-S_{\varphi}$으로부터 얻어진 S 지수와 log k'과의 선형관계로부터, S 지수는 주로 DTC 킬레이트와 이동상의 상호작용에 영향을 받는다는 것을 알 수 있었다.

• 분석과학
• /
• 제6권1호
• /
• pp.107-119
• /
• 1993

본 연구에서는 백금족 금속-아세틸아세톤 킬레이트들의 역상 액체 크로마토그래피에서 용리 거동을 조사하여 머무름 메카니즘을 연구하고 이들의 최적 분리 조건을 알아내었다. 중성의 백금족 금속-아세틸아세톤 킬레이트들의 머무름에 소용매성 효과가 크게 영향을 준다는 것을 알았다. 또한, 백금족 금속-아세틸아세톤 킬레이트들의 기하학적 구조가 머무름에 많은 영향을 준다는 것을 알았다. 팔면체 구조인 $Rh(acac)_3$, $Ir(acac)_3$보다는 평면 사각형 구조인 $Pd(acac)_2$, $Pt(acac)_2$가 비극성 정지상과 상호 작용할 수 있는 표면적이 더 크므로 더 늦게 용리된다. 컬럼의 온도를 $25{\sim}45^{\circ}C$까지 변화시키면서 각 이동상 조성에서 van't Hoff plot를 구한 결과 온도에 따른 머무름 메카니즘은 일정함을 알 수 있었다. 이동상의 조성변화에 따라 용질의 머무름 메카니즘이 변화하는가를 알아보기 위하여 엔탈피-엔트로피 상쇄 현상을 조사하였다. 메탄올-물 용매의 조성이 40~70%로 변할 때 팔면체 구조인 $Rh(acac)_3$, $Ir(acac)_3$와 평면 사각형 구조인 $Pd(acac)_2$, $Pt(acac)_2$는 각각 엔탈피-엔트로피 상쇄 현상이 관찰되었으므로 머무름 메카니즘이 킬레이트의 구조에 따라 일정함을 알았다. 아세토니트릴-물 용매 조성이 30~60%로 변할 때는 엔탈피-엔트로피 상쇄 형상이 관찰되지 않았으므로 머무름 메카니즘이 복잡함을 알았다. 백금족 금속-아세틸아세톤 킬레이트들의 최적 분리 조건은 40% 메탄올, polymeric C18 컬럼, $45^{\circ}C$이다.

• Geomechanics and Engineering
• /
• 제22권3호
• /
• pp.237-244
• /
• 2020

To achieve a wide suction range, the low suction was imposed on compacted silt specimens by the axis translation technique and the high suction was imposed by the vapor equilibrium technique with saturated salt solutions. Firstly, the results of soil water retention tests on compacted silt show that the soil water retention curves in terms of gravimetric water content versus suction relation are independent of the dry density or void ratio in a high suction range. Therefore, triaxial tests on compacted silt with constant water content at high suctions can be considered as that with constant suction. Secondly, the results of triaxial shear tests on unsaturated compacted silt with the initial void ratio of about 0.75 show a strain-hardening behavior with a slightly shear contraction and then strain-softening behavior with an obviously dilation. As the imposed suction increases, the shear strength increases up to a peak value and then decreases when the suction is beyond a special value corresponding to the peak shear strength. The residual strength increases to fair value and those at high suctions are almost independent of imposed suctions. In addition, the contribution of suction to the strength of compacted silt would not diminish even in a high suction range.

• 대한간호학회지
• /
• 제50권1호
• /
• pp.1-13
• /
• 2020

Purpose: The purpose of this study was to construct and test a structural equation model on nursing work outcomes based on Youssef and Luthans' positive psychological capital and integrated conceptual framework of work performance. Methods: This study used a structured questionnaire administered to 340 nurses. Data were analyzed using structural equation modeling. Results: Positive psychological capital showed indirect and direct effects on job satisfaction, retention intention, organizational citizenship behavior, and nursing performance. While, the nursing work environment had direct and indirect effects on job satisfaction and nursing performance, it only had indirect effects on intention to work and organizational citizenship behavior. Additionally, a mediating effect on retention intention and organizational citizenship behavior was found between job satisfaction and nursing performance variables. Conclusion: The nursing organization needs to build a supportive work environment and reinforce positive psychological capital to improve nursing performance. Additionally, it needs to actively manage the necessary parameters involved in the stages of job satisfaction, retention intention, nursing performance, and organizational citizenship behavior of nurses. The findings propose the continuous management of nursing personnel based on nurses' attitude outcome, behavioral intention, behavioral outcome, and stage of role performance.

• 한국의류산업학회지
• /
• 제21권1호
• /
• pp.36-45
• /
• 2019

In 2000s, the rapid growth of domestic and foreign fast fashion brands led to an increase in the frequency of shopping for consumers and a significant reduction in the average life span of fashion products. As the kinds and quantity of fashion products owned by individuals increase, the problem of rational clothing management becomes a new concern. The purpose of this study was to investigate the demographic, socio-psychological and purchase behavior factors influencing the frequency of closet cleanup behavior. A total of 278 questionnaires were analyzed. Frequency, exploratory factor analysis, reliability, t-test and regression analysis were used for data analysis using SPSS 22.0. This study results were as follows. First, the frequency of women's closet cleanup behavior was higher than that of men's closet cleanup behavior. Second, the number of brothers and sisters significantly affected the frequency of closet cleanup behavior. Third, the stronger the attachment to fashion products, the higher the frequency of closet cleanup behavior. Fourth, the lower the fashion product retention tendency, the higher the frequency of closet cleanup behavior. Fifth, the higher the frequency of purchasing fashion products, the higher the frequency of closet cleanup behavior. The results of current study provide various implications for educators and marketers who are interested in reasonable management behavior of fashion goods.

• Korean Chemical Engineering Research
• /
• 제44권1호
• /
• pp.35-39
• /
• 2006

본 실험에서는 모델 시스템으로써 PVP 수지에서 과당, 포도당과 같은 당 시료와 젖산, 아세트산과 같은 유기산을 사용하여 온도 변화에 따른 체류 시간의 변화 정도를 알아보았다. 펄스 시험을 사용하여 당 시료의 온도 변화에 따른 체류 시간 변화를 알아본 결과, 그 변화가 크지 않았다. PVP 수지는 일반적으로 당 분리에 사용되는 분리 수지가 아닌 사실에서 예측할 수 있듯이 현저히 떨어지는 분리능을 보였고, 온도 변화에 따른 분리능의 변화 또한 나타나지 않았다. 반면에, PVP 수지에서 유기산의 경우에는 상당한 변화를 보였다. 따라서, 유기산에 대한 정량적 흡착특성의 변화를 알아보기 위하여 $35^{\circ}C$, $65^{\circ}C$ 온도에서 전단 분석하여 그 차이를 확인하였다. 이러한 온도에 대한 흡착특성은 SMB(simulated moving bed)와 같은 대규모 크로마토그래피 공정에 이용될 수 있을 것으로 판단한다.

• Journal of Nutrition and Health
• /
• 제25권2호
• /
• pp.162-178
• /
• 1992

This study evaluated the effectiveness of affected-based program in changing the nutrition attitudes and behavior of a group of low-income housewives in a urban area near industrial complex. using pre- post- and one month retention test measures of nutrition attitudes knowledge and nutrition behavior. The sample consisted of treatment group(n=58) and control group(n=68, 66 or 61) The treatment group participated in a four-week nutrition course of eight hours offered by faculty members of department of Food and Nutition in Han Nam University. At the conclusion of the program the respondents had improved nutrition attitudes increa-sed nutrition knowledge and improved dietary diversity and dietary quality scores. Nutrition attitude scores rose significnatly from the pretest to post-test for the treatment group only However this improvement was not maintained one month after education. Nutrition know-ledge score of the treatment group increased significnatly from the pretest to posttest and pretest to retention test. Nutrition behavior was measured by food practice dietary diversity and dietary quality scores, The mean food practice score dietary diversity and dietary quality scores were signifi-cantly increased from pretest to posttest for the treatment group. Only dietary diversity scores was maintained from posttest for the retention test for the treatment group. There was a good correlation between nutrition knowlege and attitude scores at the pretest. However no significant corrlation was found between nutrition knowledge and attitude scores at the posttest. At the pretest nutrition knowledge or attitude and behavior were not correlated bu there were significant correations between nutrition knowledge or attitude and behavior at the posttest. It was concluded that a four-week nutrition education program of eight hours duration for the target people can lead to ac hange in dietary behaviors as well as nutrition knowledge and attitude.

• 동서간호학연구지
• /
• 제27권2호
• /
• pp.95-103
• /
• 2021

Purpose: This study was conducted to investigate the structural equation modeling of retention intention in nurses. Methods: A total of 210 nurses from three hospitals in B city, South Korea participated in this study. A structural equation model was constructed to verify the fitness of this model. Data were analyzed using SPSS 20.0 and AMOS 21.0 programs. Results: The hypothetical model appeared to fit the data. Three of the selected six hypotheses for the hypothetical model were statistically significant. The retention intention model showed significant direct effects for job crafting and job demands and indirect effects for relation oriented culture, which explained 28% of the variation in nurses' retention intention. Conclusion: We found that nurses' job crafting behavior and job demands had significant influences on retention intention and relation oriented culture which affected by the factors job crafting.

• Bulletin of the Korean Chemical Society
• /
• 제11권4호
• /
• pp.297-302
• /
• 1990

Retention of mono-substituted phenols in reversed-phase liquid chromatography has been studied based on the linear solvation energy relationships using the solvatochromic mobile phase parameters, ${\pi}_m^{\ast}, {\alpha}_m$ and ${\beta}_m$. It has been observed that retention behavior of phenols in RPLC were well represented by regression equations vs. solvatochromic mobile phase parameters even though the equations may be incomplete due to lack of an explicit cavity term. Dependence of retention of monosubstituted phenols on the mobile phase properties were varied depending on the type of the organic cosolvent in the mobile phase, e.g., ${\beta}_m$ and {\alpha}_m$ in methanol-water system, but ${\pi}_m^{\ast} and ${\beta}_m$ in THF-water system. It has been suggested that retention of phenols in methanol-water system is controlled by the solvophobicity of the mobile phase.