• Safety and Health at Work
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• 제12권2호
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• pp.255-260
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• 2021

Background: A well-designed shift schedule has been reported to have a positive effect on improving health problems associated with shift work. This study aimed to identify compliance with the 17 recommendations on work schedule (WSRs) for shift nurses and related factors. Methods: The descriptive study was conducted with 182 nurses who worked in three shifts for more than 1 year at superior general and general hospitals in three regions. Data were collected with selfadministered questionnaire and 13-week work schedule tables, and analyzed with both person- and cycle-based compliance. Results: Person-based compliance was 11.77 among 17 items in total. However, no one completely complied with WSRs of "no work on weekends" and which showed the lowest cycle-based compliance (22.3%). Compliance with some WSRs was related to hospital type, proportion of nurses in school and having standards on work schedule at institutional level. Conclusion: Compliance with WSRs of shift nurses in Korea is still unsatisfactory, and one day off after night shift and work on weekend are quite common. Hospitals should keep the standards on work schedule, monitor compliance with standards, and try to introduce modified shift systems to improve the current problems.

• 대한수학회보
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• 제56권3호
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• pp.789-799
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• 2019

In this paper, we deal with unicity of a nonconstant zero-order meromorphic function f(z) and its shift f(qz) when they share four distinct values IM or share three distinct values with multiplicities truncated to level 4 in the extended complex plane, where $q{\in}\mathbb{C}{\setminus}\{0\}$. We also give an uniqueness result for f(z) sharing sets with its shift.

• 한국직업건강간호학회지
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• 제13권2호
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• pp.118-129
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• 2004

Purpose: The purpose of this study is to investigate effects of shift work on married nurses' role conflict and job satisfaction. Method: Study subjects consisted of married nurses employed at four general hospitals with over 500 beds located in Seoul and Kyunggi area. The data were collected from March 15th to April 7th, 2004 using the survey and the subjects were asked to reply through self-administrative method. Results: Mean value of role conflict of nurses who worked shift work was measured 3.12 out of 5, and that of nurses who did not was measured 2.98. Mean value of job satisfaction of nurses who worked shift work was measured 2.79 out of 5, and that of nurses who did not was measured 2.86. There was a significant reverse correlation between mean level of role conflict and of job satisfaction. Both groups, nurses who worked shift work and nurses who did not, showed significant reverse-correlation in two areas. In the case of nurses who worked shift work, role conflict not showed a significant correlation. Job satisfaction showed a significant correlation with the plan to work as a nurse and remuneration in the case of nurses who worked shift work. Duty of supporting family was the factor affecting role conflict and measured 4.2% in the case of nurses who worked shift work, and the plan to work as a nurse and the academic background in the case of nurses who did not work shift work. Conclusion: To reduce role conflict and to improve the degree of job satisfaction, there should be taken a measure to improve a financial compensating system for working shift work for nurses who worked shift work, and to help nurses not working shift work to design plans for their job as nurses with stability.

• 유통과학연구
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• 제14권1호
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• pp.93-102
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• 2016

Purpose - The purpose of paper is studying the static and dynamic side for long-term memory storage properties, and increase the explanatory power regarding the long-term memory process by looking at the long-term storage attributes, Korea Composite Stock Price Index. The reason for the use of GPH statistic is to derive the modified statistic Korea's stock market, and to research a process of long-term memory. Research design, data, and methodology - Level shifts were subjected to be an empirical analysis by applying the GPH method. It has been modified by taking into account the daily log return of the Korea Composite Stock Price Index a. The Data, used for the stock market to analyze whether deciding the action by the long-term memory process, yield daily stock price index of the Korea Composite Stock Price Index and the rate of return a log. The studies were proceeded with long-term memory and long-term semiparametric method in deriving the long-term memory estimators. Chapter 2 examines the leading research, and Chapter 3 describes the long-term memory processes and estimation methods. GPH statistics induced modifications of statistics and discussed Whittle statistic. Chapter 4 used Korea Composite Stock Price Index to estimate the long-term memory process parameters. Chapter 6 presents the conclusions and implications. Results - If the price of the time series is generated by the abnormal process, it may be located in long-term memory by a time series. However, test results by price fixed GPH method is not followed by long-term memory process or fractional differential process. In the case of the time-series level shift, the present test method for a long-term memory processes has a considerable amount of bias, and there exists a structural change in the stock distribution market. This structural change has implications in level shift. Stratum level shift assays are not considered as shifted strata. They exist distinctly in the stock secondary market as bias, and are presented in the test statistic of non-long-term memory process. It also generates an error as a long-term memory that could lead to false results. Conclusions - Changes in long-term memory characteristics associated with level shift present the following two suggestions. One, if any impact outside is flowed for a long period of time, we can know that the long-term memory processes have characteristic of the average return gradually. When the investor makes an investment, the same reasoning applies to him in the light of the characteristics of the long-term memory. It is suggested that when investors make decisions on investment, it is necessary to consider the characters of the long-term storage in reference with causing investors to increase the uncertainty and potential. The other one is the thing which must be considered variously according to time-series. The research for price-earnings ratio and investment risk should be composed of the long-term memory characters, and it would have more predictability.

• Bulletin of the Korean Chemical Society
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• 제18권9호
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• pp.981-985
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• 1997

13C, 15N, and 29Si NMR chemical shifts have been computed for selected X-substituted silatranes (X=Cl, F, H, CH3) using Gauge-Including Atomic Orbitals (GIAO) at the Hartree-Fock level of theory. The isotropic 13C chemical shifts are largely insensitive to substituent-induced structural changes. In this study, the isotropic 13C chemical shifts between 1-methyl- and 1-hydrogensilatranes by GIAO-SCF calculation at the HF/6-31G level are very similar. But the results of 1-chloro- and 1-fluorosilatranes are about 4 ppm different from the experimental values. In contrast, the isotropic 15N and 29Si chemical shifts and the chemical shielding tensors are quite sensitive to substituent-induced structural changes. These trends are consistent with those of the experiment. The isotropic 15N chemical shift demonstrates a very clear correlation with Si-N distance. But in case of 29Si the correlations are not as clean as for the 15N chemical shift; the calculated variation in the 29Si chemical shift is much larger.

• Bulletin of the Korean Chemical Society
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• 제33권10호
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• pp.3391-3396
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• 2012

Two-dimensional infrared (2D-IR) spectroscopy can probe the fast structural evolution of molecules under thermal equilibrium. Vibrational frequency fluctuation caused by structural evolution produced the time-dependent line shape change in 2D-IR spectrum. A variety of methods has been used to connect the evolution of 2D-IR spectrum with Frequency-Frequency Correlation Function (FFCF), which connects the experimental observables to a molecular level description. Here, a new method to extract FFCF from 2D-IR spectra is described. The experimental observable is the time-dependent frequency shift of maximum peak position in the slice spectrum of 2D-IR, which is taken along the excitation frequency axis. The direct relation between the 2D-IR peak shift and FFCF is proved analytically. Observing the 2D-IR peak shift does not need the full 2D-IR spectrum which covers 0-1 and 1-2 bands. Thus data collection time to determine FFCF can be reduced significantly, which helps the detection of transient species.

• 한국콘텐츠학회논문지
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• 제17권3호
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• pp.261-273
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• 2017

본 연구의 목적은 간호사들의 공감수준을 측정하고, 공감수준이 그들의 삶의 만족도와 직무만족도에 미치는 영향을 알아보는 것이다. 공감수준, 삶의 만족도 그리고 직무만족도의 세 가지 요인들로 구성된 설문지를 부산지역 소재 병원에서 근무하는 간호사 150명에게 실시하였다. 간호사는 근무형태에 따라 교대근무 간호사와 비교대근무 간호사로 구분하여, 총 150개 중 144개의 설문지를 사용하여 IBM SPSS Statistics 21로 분석하였다. 교대근무 간호사는 공감수준이 높을수록 직무만족도가 높았고, 비교대근무 간호사는 공감수준이 높을수록 삶의 만족도가 높았다. 흥미롭게도, 공감수준은 교대근무 간호사의 직무만족도에 긍정적인 영향을 미쳤고(${\beta}=.282$, p=.006), 비교대근무 간호사에게는 삶의 만족도에 긍정적인 영향을 미쳤다(${\beta}=.252$, p=.048). 본 연구 결과, 간호사의 공감수준은 간호사의 삶의 만족도와 직무 만족도에 긍정적으로 영향을 주었다. 간호사의 공감 부족은 환자와의 갈등을 일으킨다는 사실에서 보듯이, 간호사의 직무수행을 향상시키기 위해서는 간호사의 삶의 만족도와 직무만족도에 있어 공감의 중요한 역할을 이해하려는 새로운 관점이 필요하다.

• 한국항공운항학회지
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• 제24권3호
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• pp.1-9
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• 2016

The study examined the effects of shift pattern and expertise on perceived workload and performance for aviation security screeners. 18 security screeners participated in this study, in which data were analyzed by dividing them into two groups (experts vs. less-experts). We measured their perceived workloads and performances (i.e., reading time through X-ray) as a function of shift pattern and time condition. As a result, highly experienced screeners (experts) showed high workload during the morning shift, while lowly experienced screeners (less-experts) reported high workload during the full-day and the afternoon shifts. In addition, less-experts took a longer time to inspect the baggage when they worked for the full-day and the afternoon shifts. Particularly, in the last time slot of the full-dat shift, expert screeners had a high workload, while both groups showed a high-level of workload at around 17:30 in the afternoon shift.

• 임상간호연구
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• 제25권2호
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• pp.107-119
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• 2019

Purpose: The purpose of this study was to investigate the welfare status of nurses and the status of fixed night shifts and flexible work arrangements in both general hospitals and advanced general hospitals in Korea. Methods: A total of 167 hospitals participated in this study, done from April to October 2018. Results: There were 103 hospitals utilizing the fixed night shift system, 22 in the two-shift system, 3 in the fixed holiday shift, 79 in the fixed shift system, and 39 in the short-time working system. The average welfare benefits for nurses increased to 33.02 million won on average. However, welfare services for the nurses were poor: 41.8% of the respondents had a nurses' lounge, 81.7% were given dormitory space at their place of employment, 41.8% had access to welfare facilities, and 56.4% were provided with welfare support countermeasures. Conclusion: The results show an increasing trend of hospitals to utilize fixed night shift and flexible work arrangements. An institutional strategy at the national policy level should be established to implement flexible work arrangements including the fixed night shift system, which has a poor level of welfare.

• 한국병원경영학회지
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• 제29권2호
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• pp.1-17
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• 2024

Purpose: This descriptive study aimed to identify shift nurses' retention intention, need satisfaction, calling and vocation, and job stress, as well as the effects of these factors on retention intention. Methods: The participants of this study were 193 nurses working shifts with more than three months' clinical experience at general hospitals. Data were collected using a structured questionnaire from February 1 to 28, 2023. Nurses' Retention Index and Nurse Needs Satisfaction Scale, Korean version of the Calling and Vocational Questionnaire, Korean Occupational Stress Scale were used. Data were analyzed using SPSS/WIN 23.0 program. Independent t-test, one-way ANOVA, Pearson's correlation analysis, and hierarchical multiple regression analysis were conducted for statistical analysis. Results: Regarding nurses' shift work, the mean scores for retention intention, needs satisfaction, calling and vocation, and job stress were 32.12±9.04, 94.87±14.74, 26.95±6.84, and 66.12±10.34. Moreover, the nurses' retention intention differed significantly by age, education level, religion, marital status, clinical experience, satisfaction with wage, and job satisfaction. Furthermore, retention intention was positively correlated with needs satisfaction and calling and vocation and negatively correlated with job stress. Needs satisfaction, and calling and vocation as well as education level of bachelor's degree, job satisfaction had positive effects on shift work nurses' retention intention. Job dissatisfaction had relatively negative effects on retention intention compared to having neutral job satisfaction. Conclusion: It is necessary to develop programs that promote needs satisfaction, calling and vocation, and job satisfaction to improve nurses' retention intention in relation to shift work; moreover, institutional support for acquiring a bachelor's degree or higher is needed.