• 한국직업건강간호학회지
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• 제24권4호
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• pp.290-301
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• 2015

Purpose: The purpose of this study was to identify the influencing factors on turnover intention of nurses in long-term care hospitals. Methods: Data were collected from 210 nurses in 11 long-term care hospitals in B city. Data were analyzed using descriptive statistics, t-test, ANOVA, Pearson's correlation coefficient, and Stepwise multiple regression. Results: Turnover intention was significantly correlated with emotional labor(r=.35, p<.001) and job involvement (r=-.38, p<.001). In a multiple regression, emotional labor (${\beta}=.31$, p<.001), age (${\beta}=-.27$, p<.001), job satisfaction (${\beta}=.24$, p<.001), job involvement (${\beta}=-.23$, p<.001), and number of patients assigned(${\beta}=.14$, p=.009) were associated with turnover intention. These factors attributed to 41.2% of the total variance in turnover intention. Conclusion: Considering the results of this study, proactive educational and/or human resource management interventions need to be developed especially for those younger nurses in order to reduce emotional labor as well as to promote job satisfaction and job involvement of nurses in long-term care hospitals.

• 한국보건간호학회지
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• 제30권3호
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• pp.512-525
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• 2016

Purpose: Ageing in place may improve the quality of life of frail elderly and decrease their costs of services. The purpose of this study was to examine the factors that influence the institutionalization of elderly using home care services in a Korean long-term care insurance system. Methods: This study used the data of '2009 Satisfaction survey of Korean long-term care system'. The survey proceeded to use a sampling data based on region, level of long-term care need, and insurance type among the beneficiaries between August and September 2009. The onset dates of institutionalization of 1,095 participants were ascertained from long-term care insurance claim data. This study calculated the hazard ratio through the Cox Proportional Hazard Model. Results: A total of 176 subjects who were institutionalized in nursing homes were included. There were higher risks in the group that included those who were 85 years and over, had dementia or fracture, used home-visit nursing service, and were not supported by direct family. Conclusion: The results of this study have policy implications to supplement the home care service system and postpone nursing home institutionalization of elderly.

• 상하수도학회지
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• 제20권2호
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• pp.187-196
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• 2006

Forecasting the long-term water demand is important in the plan of water supply system because the location and capacity of water facilities are decided according to it. To forecast the long-term water demand, the existing method based on lpcd and population has been usually used. But, these days the trend among the variation of water demand has been disappeared, so expressing other variation of it is needed to forecast correct water demand. To accomplish it, we introduced the System Dynamics method to consider total connections of water demand factor. Firstly, the factors connected with water demand were divided into three sectors(water demand, industry, and population sectors), and the connections of factors were set with multiple regression model. And it was compared to existing method. The results are as followings. The correlation efficients are 0.330 in existing model and 0.960 in SD model and MAE are 3.96% in existing model and 1.68% in SD model. So, it is proved that SD model is superior to the existing model. To forecast the long-term water demand, scenarios were made with variations of employment condition, economic condition and consumer price indexes and forecasted water demands in 2012. After all scenarios were performed, the results showed that it was not needed to increase the water supply ability in Seoul.

• 한국지반신소재학회논문집
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• 제17권4호
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• pp.239-249
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• 2018

연약점토 지반 개량을 위해 연직배수재 타설 후 선행재하공법이 일반적으로 적용되는데, 현장에서의 시공계획 변경 등으로 인해 연직배수재 타설 후 장기간 방치되는 경우가 종종 발생된다. 따라서 장기간 방치된 조건에서의 연직배수재 열화 현상을 고려하기 위해 구속압으로 적용되는 수온을 각각 30, 35, $40^{\circ}C$를 적용하였다. 그 결과, 시간경과에 따라 배수성능이 급격히 저하되는 경향을 나타냈다. 그리고 현장 원위치 조건, 즉, 점토 구속조건하에서 장기간 통수능 저하 정도를 평가하기 위하여 Miura와 Chai(2000)식을 적용하였다. 그 결과, 온도 변화 조건에서 수행된 통수능 시험결과를 이용한 신뢰성 해석 방법과 Miura와 chai(2000)식을 적용하여 장기 통수능을 평가할 수 있는 것으로 평가되었다.

• 보건의료산업학회지
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• 제12권4호
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• pp.155-172
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• 2018

Objectives: The purpose of this study was to investigate the influence of fall-related knowledge and fall prevention self-efficacy of care-givers working in long-term care hospitals on fall prevention behaviors and fall management behaviors for older adults with dementia. Methods: Participants were 125 care-givers working in long-term care hospitals. Data were collected with structured questionnaires from August 7 to 14, 2018. Data were analyzed by t-test, ANOVA, $Scheff{\dot{e}}$ test, Pearson's correlation coefficients, and multiple regression analysis using SPSS 18.0. Results: Fall prevention self-efficacy influence fall prevention behaviors(${\beta}=.55$, p<.001), while fall-related knowledge impacted fall management behaviors(${\beta}=.43$, p<.001). Conclusions: The results suggest that an education program for fall prevention of older adults with dementia in long-term care hospitals should focus on improving the fall-related knowledge and fall prevention self-efficacy of care-givers to increase both the fall prevention behaviors and fall management behaviors of care-givers.

• 한국노년학
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• 제36권4호
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• pp.1025-1036
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• 2016

본 연구는 노인요양시설의 사례관리자가 인지하는 조직 내 의사소통 만족과 서비스 질과의 관련성을 규명함으로써 사례관리에 있어 다양한 전문가로 구성된 팀원들간의 원활한 의사소통이 양질의 서비스의 전제조건임을 살펴보고자 하였다. 이를 위해 서울시와 경기도의 30인 이상 규모의 48개 법인시설에 종사하는 사례관리자 104명을 대상으로 설문조사를 진행하였으며, 기술분석 및 다중회귀분석을 통해 두 변인간의 관련성을 규명하고자 하였다. 연구결과 사례관리자가 인지하는 조직 내 의사소통의 만족도가 높을수록 제공하는 서비스의 질이 높은 것으로 평가하는 것으로 나타났다. 이러한 연구결과를 바탕으로 사례관리팀내의 의사소통을 원활히 하기 위한 방안과 다양한 사례관리모델 중 노인요양기관에서는'팀접근'모델이 보다 적합할 수 있음을 제언하였다.

• Nuclear Engineering and Technology
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• 제55권12호
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• pp.4335-4349
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• 2023

Nuclear marine propulsion has been emerging as a next generation carbon-free power source, for which proper passive residual heat removal systems (PRHRSs) are needed for long-term safety. In particular, the characteristics of unlimited operation time and compact design are crucial in maritime applications due to the difficulties of safety aids and limited space. Accordingly, a compact and long-term-operable PRHRS has been proposed with the key design concept of using both air cooling and seawater cooling in tandem. To confirm its feasibility, this study conducted system design and a transient analysis in an accident scenario. Design results indicate that seawater cooling can considerably reduce the overall system size, and thus the compact and long-term-operable PRHRS can be realized. Regarding the transient analysis, the Multi-dimensional Analysis of Reactor Safety (MARS-KS) code was used to analyze the system behavior under a station blackout condition. Results show that the proposed design can satisfy the design requirements with a sufficient margin: the coolant temperature reached the safe shutdown condition within 36 h, and the maximum cooling rate did not exceed 40 ℃/h. Lastly, it was assessed that both air cooling and seawater cooling are necessary for achieving long-term operation and compact design.

• 아태비즈니스연구
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• 제14권1호
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• pp.73-91
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• 2023

Purpose - The purpose of this study is to re-examine the disclosure effect of stock splits and long-term performance after stock splits using stock split data over the past 10 years, and infer the motivation (signal or opportunism) of stock splits. In addition, we focus on exploring the determinants of the short- and long-term market response to stock splits. Design/methodology/approach - We measure the short-term market response to a stock split and the long-term stock performance after the stock split announcement using the event study method. We analyze whether there is a difference in the long-term and short-term market response to a stock split according to various company characteristics through univariate analysis and regression analysis. Findings - In the case of the entire sample, a statistically significant positive excess return is observed on the stock split announcement date, and the excess return during the 24-month holding period after the stock split do not show a difference from zero. In particular, the difference between short-term and long-term returns on stock splits is larger in companies with a large stock split ratio, small companies, large growth potential, and companies with a combination of financial events after a stock split. Research implications or Originality - The results of this study suggest that at least the signal hypothesis for a stock split does not hold in the Korean stock market. On the other hand, it suggests that there is a possibility that a stock split can be abused by the manager's opportunistic motive, and that this opportunism can be discriminated depending on the size of the stock split, corporate characteristics, and financing plan.

• The Journal of Asian Finance, Economics and Business
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• 제8권7호
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• pp.469-476
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• 2021

This study aims to examine and measure the impact of capital structure on the profitability of companies in emerging markets. The research sample includes eighteen rubber companies listed on the Vietnam stock exchange from 2015-2019. After collecting the research data, it was imported into excel to calculate the criteria for the research model. By using Stata 16 software, the study selected a data processing model and evaluated the relevance of the regression analysis model. The research results show that the profitability of listed rubber companies in Vietnam (measured by return on equity (ROE) has a positive relationship with the debt-to-asset ratio but has a negative relationship with the long-term debt-to-asset ratio. The results also show a positive impact of firm size and revenue growth on profitability while liquidity and the ratio of tangible fixed assets to total assets do not affect significantly. These results are consistent with most of the previously published studies. However, in contrast to many previous studies, our study shows that the long-term debt-to-assets ratio has a negative effect on profitability while the debt-to-asset ratio has a positive effect. This is entirely consistent with the characteristics of long-term debt use in emerging markets.

• Advances in concrete construction
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• 제9권3호
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• pp.289-299
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• 2020

To investigate the long-term behavior of eccentrically loaded RC columns, which are more realistic in practice than concentrically loaded RC columns, long-term eccentric loading tests were conducted for 10 RC columns. Test parameters included concrete compressive strength, reinforcement ratio, bar yield strength, eccentricity ratio, slenderness ratio, and loading pattern. Test results showed that the strain and curvature of the columns increased with time, and concrete forces were gradually transferred to longitudinal bars due to the creep and shrinkage of concrete. The long-term behavior of the columns varied with the test parameters, and long-term effects were more pronounced in the case of using the lower strength concrete, lower strength steel, lower bar ratio, fewer loading-step, higher eccentricity ratio, and higher slenderness ratio. However, in all the columns, no longitudinal bars were yielded under service loads at the final measuring day. Meanwhile, the numerical analysis modeling using the ultimate creep coefficient and ultimate shrinkage strain measured from cylinder tests gave quite good predictions for the behavior of the columns.