• Nuclear Engineering and Technology
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• 제54권3호
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• pp.948-958
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• 2022

Since reliability and security of man-machine system increasingly depend on reliability of human, human reliability analysis (HRA) has attracted a lot of attention in many fields especially in nuclear engineering. Dependence assessment among human tasks is a important part in HRA which contributes to an appropriate evaluation result. Most of methods in HRA are based on experts' opinions which are subjective and uncertain. Also, the dependence influencing factors are usually considered to be constant, which is unrealistic. In this paper, a new model based on Dempster-Shafer evidence theory (DSET) and fuzzy number is proposed to handle the dependence between two tasks in HRA under uncertain and dynamic situations. First, the dependence influencing factors are identified and the judgments on the factors are represented as basic belief assignments (BBAs). Second, the BBAs of the factors that varying with time are reconstructed based on the correction BBA derived from time value. Then, BBAs of all factors are combined to gain the fused BBA. Finally, conditional human error probability (CHEP) is derived based on the fused BBA. The proposed method can deal with uncertainties in the judgments and dynamics of the dependence influencing factors. A case study is illustrated to show the effectiveness and the flexibility of the proposed method.

• 한국간호교육학회지
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• 제19권3호
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• pp.423-432
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• 2013

Purpose: The purpose of this study was to identify the factors influencing college life adjustment in nursing students. Methods: The subjects consisted of 206 nursing students. Data were collected from December 6 to December 13, 2012. Data analysis was done using descriptive statistics, t-test, ANOVA, Pearson's correlational coefficients and multiple regression with SPSS WIN v 20.0. Result: The mean scores of ego-identity ($3.53{\pm}48$), social problem-solving ability ($3.41{\pm}.42$), and college life adjustment ($5.27{\pm}.91$) were above average. College life adjustment was significantly different according to ego-identity, academic performance, and perceived health state. Ego-identity, academic performance, and perceived health state were influencing factors of college life adjustment (53.2%). Conclusion: It is necessary to develop an education program to improve ego-identity, academic performance, and perceived health state to help nursing students to adjust to their college life more effectively.

• 한국조리학회지
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• 제23권1호
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• pp.1-9
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• 2017

The number of vegetarian restaurants in Malaysia has been increasing as people are motivated by various reasons to consume vegetarian foods. In addition, university students contribute to the economy, hence it is important for investors or owners of vegetarian restaurants to understand university students' perceptions on vegetarian restaurants based on their own experiences. This research provided an insight of factors influencing university students, such as family members, religion, trend and health. The objective of this research was to identify the perceptions of university students on vegetarian restaurants. This research used a qualitative approach by conducting a focus group interview with university students as a source of data collection. The six respondents were selected based on the criteria of university students in Malaysia who are consuming vegetarian food. Findings enabled investors and owners of vegetarian restaurants to have an in-depth understanding on the factors influencing university students' perceptions on vegetarian restaurants and take necessary action to accommodate them.

• 한국콘크리트학회:학술대회논문집
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• 한국콘크리트학회 2001년도 봄 학술발표회 논문집
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• pp.55-60
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• 2001

Influencing factors on flexural toughness of ring-type fiber reinforced concrete(RSFRC) are investigated. An experiment proceeding ASTM C 78 is peformed to make a comparison between ring-type fibers and double-hook type fibers. Most specimen with ring type fibers have failed by the cone type failure, while discrete hook type fibers have failed by fiber pullout. For the hook-type fiber reinforced concrete(SFRC), the first crack load increases, as the fiber mixing volume increases. Aspect ratio(fiber length/fiber diameter) is critical for hook type fibers, so the flexural toughness increases significantly, as the length of fiber increases. However, for the ring type, the toughness indices Increase as the number of fibers in the specimen increases. Since there is no bond problem between the ring fiber and the concrete matrix, the aspect ratio does not affect the performance of the composite material with the newly developed steel fibers. Influencing factors with respect to flexural toughness RSFRC were observed to be ring diameter, diameter of steel fiber and fiber content.

• 대한간호학회지
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• 제37권6호
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• pp.855-862
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• 2007

Purpose: The purpose of this study was to identify the factors influencing fatigue in patients with chronic obstructive pulmonary disease. Methods: A descriptive correlational study design was used. A convenience sample of 125 subjects was recruited from the outpatient respiratory clinic at a large university hospital. Data was collected from June to October, 2005 using structured questionnaires, an oxygen saturation test, a 6-minute walking test, and a pulmonary function test. Results: Subjects had a slightly low degree of fatigue. The fatigue showed a significant correlation with emotion(r=.589, p= .000), dyspnea(r=.304, p= .001), self-efficacy(r=-.278, p= .002), and symptom experience(r=.238, p= .008). Emotion(34.7%) and dyspnea(5.8%) were significant predictors to explain fatigue. Conclusion: This study provides comprehensive understanding of the influencing factors on fatigue in patients with chronic obstructive pulmonary disease. Nursing interventions to decrease negative emotion and dyspnea for management of fatigue is suggested.

• 근관절건강학회지
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• 제6권1호
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• pp.73-84
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• 1999

This study was conducted to identify the characteristics of fatigue and its influencing factors in patients having chronic arthritis. The subjects of this study were 120 patients who visited a Rheumatis Center of H University Hospital. Data were collected from Aug. 9, 1997 to Feb. 5, 1998. For analysing data, SPSS/Win was used for descriptive statistics & Pearson's correlation coefficient, and Lisrel 8.0 was for path analysis. The findings were as follows : 1. Mean score of subjective fatigue was 5.36 and it means moderate degree of fatigue. 2. Fatigue showed positive relationship with pain & depression, and it showed negative relationship with ADL & self efficacy. 3. Fatigue was influenced by pain and depression. and was not influenced by ADL and self efficacy directly. But ADL and self efficacy influenced on fatigue through pain and depression indirectly. According to this findings. the significant influencing factors of fatigue were pain and depression, therefore the development of nursing intervention for relieving pain and depression would be needed.

• Asia pacific journal of information systems
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• 제13권4호
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• pp.49-72
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• 2003

Despite the phenomenal growth of Internet users in recent years, the penetration rate of B2C electronic commerce(EC) is still low. According to previous studies, one of most often cited reasons is the lack of consumers' trust. Although trust is an important concept in B2C EC, there is a lack of theory-based empirical research in this area. In this paper, influencing factors are proposed for investigating the nature of trust in the specific context of B2C EC. Thirteen hypotheses are empirically tested. The results show that most of hypotheses are supported except for perceived size, perceived competence, perceived reputation, familiarity and third party recognition. In addition trust was found to have a strong positive effect on intention to purchase. Finally, trust was found to have a mediation effect between on influencing factors and intention to purchase. Implications of these findings are discussed for researchers and practitioners.

• 지역사회간호학회지
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• 제24권2호
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• pp.236-244
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• 2013

Purpose: This study was to investigate lifestyles and identify factors influencing the bone mineral density (BMD) among employees in a community. Methods: Data were collected from 199 employees. Their lifestyles and BMIs were measured with a self-report questionnaire. As for their BMDs, their calcanei were measured with Quantitative Ultrasound. Results: Assessing their BMDs with reference to the WHO standards, 52.8% of the subjects' calcaneus BMDs were normal and 44.2% showed osteopenis, 3.0% showed osteoporosis. Age (odds ratio=1.05, p=.029), exercise (odds ratio=.31, p=.006) and the number of eating meals per day (odds ratio=1.97, p=.046) were significant factors influencing the subjects' BMDs. Conclusion: Strategies to emphasize exercise and dietary habits in employees are important for improving their bone mineral density. Programs for improving bone mineral density based on life cycle need to be developed.

• 대한산업공학회지
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• 제27권1호
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• pp.103-110
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• 2001

The aim of this paper is the implementation of high assembly productivity through product redesign. The product and process are analyzed by influencing factors for based data of the product redesign. And then, the weak assembly processes are analyzed by weak influencing factors. By this information about product and process, the score of weakness of influencing factors extracts the redesign rules and principles. The sequences of processes are changed according to the product redesign, and they are evaluated using the line efficiency and smoothness index.

• 지식경영연구
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• 제3권2호
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• pp.49-70
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• 2002

The purpose of this study is to investigate the process and its influencing factors of technological capability building in a small and medium-sized capital goods sector. This paper first reviews the influencing factors of accumulating technological capability-technology trajectory, technology sources, technological capability, technological learning, technology strategy, and entrepreneurship. The paper then presents the integrative model of technological capability building. The experience of Mirae Corporation, the first generation of venture company in Korea, is also discussed as a case in point to analyse the process of technological capability building in a small and medium-sized capital goods company. Finally, the implications and limitations of the study arc discussed.