• Journal of Korean Institute of Industrial Engineers
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• v.33 no.1
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• pp.61-69
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• 2007

In a large complex system, maintenance priorities for the failed components are important to maintain the sys-tern reliability at required level. Commonly used methods of determining maintenance priorities are based onranking the failed components by using reliability importance measures such as Birnbaum reliability importance,risk achievement worth and F-V importance, etc. In the preceding works, maintenance priorities for the failedcomponents are determined by using such existing measures, In this study, a new method of determining main-tenance priorities, which utilizes the joint reliability importance is proposed. By investigating the sign of thejoint reliability importance, maintenance priorities obtained by the existing methods are adjusted to yield new re-vised priorities. The revised maintenance priorities are shown to be more effective than the existing ones fromthe standpoint of the speed of system recovery, Effectiveness of the proposed method is illustrated by numericalexamples.

• Korean Journal of Adult Nursing
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• v.22 no.3
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• pp.303-311
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• 2010

Purpose: The purpose of this study was to investigate the importance of nurses' caring behaviors and to identify the factors influencing of nurses' caring behaviors. Methods: The participants were 404 nurses who were caring the chronically sick elderly in five H university hospitals. Data were collected through self-reported questionnaires on the importance of caring behaviors, nursing professional value and job satisfaction. Data were analyzed with descriptive statistics, t-test, ANOVA, Scheffe-test, Pearson's correlation coefficient and stepwise multiple regression with SPSS/WIN 16.0. Results: The average score for importance of nurses' caring behaviors was 3.38 and the 'professional knowledge and skill' factor was the highest level. The mean score of nursing professional value was 7.53 and job satisfaction, 3.18. Importance of nurses' caring behaviors had a significant positive correlation with nursing professional value, job satisfaction, nurse's age and work experience among demographic variables. Two significant variables influencing importance of nurses' caring behaviors were nursing professional value and job satisfaction. But characteristics of nurses did not influence. Conclusion: The findings of this study indicate that importance of nurses' caring behaviors can be improved by intervening factors affecting this importance. Based on the findings of this study, further nursing practice and nursing research for nurses caring the sick elderly should be focused on their nursing professional value and job satisfaction.

• Journal of the Korean Institute of Rural Architecture
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• v.15 no.1
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• pp.65-72
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• 2013

Neighborhood park has the multiple functions toward quantitative and qualitative improvement of quality of citizen's life. This study is about neighborhood park in 4 Local Industry Complex of Cheonan City. Through this study has intended to analyze the status of use and the importance level of facilities. To reach this goal, this study has analyzed the general information, use and importance level of users through such statistical methods as frequency analysis, regression analysis and reliability analysis. As a result, users has the speciality in the neighborhood park in industry complex. Break area or facilities for the workers should be installed. Not end once installed, but continually improved and more efficient management of park facilities will be made. Also, importance of facilities analysis has the higher in normal or importance. Management and cleanliness is especially higher in importance. Importance for the overall facility was affecting in order the facility design, management, safety, installation number.

• Journal of the Korean Society of Food Culture
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• v.35 no.1
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• pp.55-64
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• 2020

This study on the importance and satisfaction of selection attributes for customers using Michelin restaurants. The survey was conducted on 309 respondents who had visited and used restaurants by classifying the Michelin restaurants into starred restaurants and Bib Gourmand restaurants. The data was collected and the frequency analysis, t-test verification, and IPA analysis were performed using the SPSS 25.0 statistical program. The results of the study examined the difference between the importance and satisfaction of the choice of starred restaurants. Overall, the importance was higher than satisfaction. The importance of hygiene and cleanliness was recognized by many customers that the expectation for the overall Starred restaurants was very high. Bib Gourmand, showed that the importance was higher than satisfaction. In terms of importance and satisfaction, the taste of food is the most important and the satisfaction is high. Comparing the IPA analysis of the attributes of 1) hygiene and cleanliness, food quality, convenience, and facade of food, 2) service professionalism and variety of menus, 3) food price, atmosphere and amount, and 4) the attitude and kindness of the employees were shown. This study has great significance in providing practical basic data for the management of domestic Michelin restaurants.

• The Journal of Korean Academic Society of Nursing Education
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• v.23 no.3
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• pp.252-267
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• 2017

Purpose: This study aimed to investigate clinical nurses' perception on nursing managerial competencies. Methods: This was a descriptive study. The data were collected from 198 nurse managers who had worked in six general hospitals using a self-reporting questionnaire. Data were analyzed by descriptive statistics, t-test, ANOVA, and Importance-Performance Analysis. Results: Only 32% of the participants had experienced nursing managerial competency training. The mean score for perceived performance of nursing managerial competency was lower than that for perceived importance. There were significant differences in perceived importance, performance, and importance-performance gaps among head, charge, and staff nurses. Importance-performance analysis showed that three of the 30 nursing managerial competencies require further development: staffing, human resources development and education, and nursing standard development competency. There were significant differences in importance-performance gaps according to age, career years in current hospital, work shift, position, nursing delivery system, and nursing managerial competency-education experience. Conclusion: A training program for developing and improving nursing managerial competencies which is focused on the gaps in importance and performance level is needed for clinical nurses. In addition, it should be considered to improve nursing work conditions such as nursing delivery system and formal appointment in order to increase the performance of nursing managerial competencies.

• Korean Journal of Adult Nursing
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• v.21 no.1
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• pp.95-104
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• 2009

Purpose: To examine pressure ulcer care from the standpoints of perceived importance, educational needs, knowledge and performance among clinical nurses. Methods: This descriptive study was conducted with a convenient sample of 289 nurses from four hospitals. Questionnaire data collected from June to August 2008 was analyzed using descriptive statistics, t-test, ANOVA, and Pearson's correlation coefficients. Results: The mean scores of importance and educational needs concerning pressure ulcer care were high, performance was moderate, and knowledge was low. Knowledge level differed significantly according to career, performance differed significantly according to pressure ulcer care education and the main healer(the person primarily responsible for treatment). Perceived importance differed significantly according to the main healer, and educational needs differed significantly according to working area and the main healer. Significant correlations were evident between performance and importance, performance and educational needs, importance and knowledge, and importance and educational needs. Conclusion: Focus on perceived importance and educational needs to clinical nurses about pressure ulcer care may be beneficial to improve knowledge and practice of pressure ulcer care, and should be reflected in the development of effective programs to enhance relevant nursing skills.

• Journal of the Korea Safety Management & Science
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• v.15 no.1
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• pp.241-248
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• 2013

Importance-Performance Analysis(IPA) is a well-known methodology to find the area for improvement. However, the IPA uses different strategies depending on an attribute falls in either 'Concentrate', 'Keep up', 'Possible overkill', or Low priority' quadrant. Problems can occur when attributes locate near the demarcation lines. To solve this problem of IPA, I suggest a modified importance-satisfaction analysis which integrates the Slack(1994)'s diagonal approach and Kano's ASC(Jang et al., 2012) into Yang(2003)'s Importance-Satisfaction model. For this, I investigated 21 smartphone's quality attributes, which adopted from Song and Park(2012)'s study, and conducted a survey of 280 university students for the results of Kano' model and the importance and satisfaction of the quality attributes. The results show that the proposed model enables the business managers to prioritize the quality attributes for improvement through the interpretation on the continuous diagonal line using the Kano's questionnaire only, without acquiring any additional survey for importance of attributes. Accordingly, it is expected that the newly proposed method will diminish the limitation of the existing IPA. In addition, to test the validity of the ASC, this study conducts a comparative analysis between the Kano's ASC and Tontini(2007)'s method to determine the relative importance of quality attributes.

• Journal of Korea Multimedia Society
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• v.24 no.10
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• pp.1414-1424
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• 2021

In this paper, the importance of input factors of a DNN (Deep Neural Network) PM_2.5 forecasting model using LRP(Layer-wise Relevance Propagation) is analyzed, and forecasting performance is improved. Input factor importance analysis is performed by dividing the learning data into time and PM_2.5 concentration. As a result, in the low concentration patterns, the importance of weather factors such as temperature, atmospheric pressure, and solar radiation is high, and in the high concentration patterns, the importance of air quality factors such as PM_2.5, CO, and NO₂ is high. As a result of analysis by time, the importance of the measurement factors is high in the case of the forecast for the day, and the importance of the forecast factors increases in the forecast for tomorrow and the day after tomorrow. In addition, date, temperature, humidity, and atmospheric pressure all show high importance regardless of time and concentration. Based on the importance of these factors, the LRP_DNN prediction model is developed. As a result, the ACC(accuracy) and POD(probability of detection) are improved by up to 5%, and the FAR(false alarm rate) is improved by up to 9% compared to the previous DNN model.

• Korean Journal of Clinical Pharmacy
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• v.32 no.4
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• pp.303-312
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• 2022

Objective: The purpose of the study was to analyze the difference in the importance and performance of the educational content of the community pharmacy practice and find the factors that influence it. Methods: A 5-point Likert scale questionnaire asked about the importance and performance of the pharmacy practice education items to community pharmacy preceptors, current students, and professors. Data were analyzed using Microsoft office 365 Excel and IBM SPSS 21.0. Results: A total of 117 people participated. The averages of importance and performance were 4.34±0.34 and 3.71±0.45, respectively. Except for the computational entry of prescriptions and medication history, the average score for the importance of all educational items was statistically significantly higher than the one for performance. Importance Performance Analysis (IPA) identified over-the-counter medication counseling, over-the-counter drug selection consultation, pharmacy management, adverse drug reaction monitoring, and understanding and implementation of drug use evaluation as the items that needed focused effort. Borich's needs were highest in the adverse drug reaction monitoring. Conclusions: Overall, high importance and low performance indicate a need for improvement in community pharmacy practice education. Since the demand for education was high in over-the-counter medication counseling, adverse drug reaction monitoring, and OTC drug selection consultation, various supports are urgently needed to strengthen pharmacy practice education in this area in the future.

• Journal of Information Technology Applications and Management
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• v.31 no.1
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• pp.11-25
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• 2024

The purpose of this study is to investigate the improvement of prediction performance and changes in variable importance in SEM-ANN two-stage analysis. 366 cosmetics repurchase-related survey data were analyzed and the results were presented. The results of this study are summarized as follows. First, in SEM-ANN two-stage analysis, SEM and ANN models were trained with train data and predicted with test data, respectively, and the R² was showed. As a result, the prediction performance was doubled from SEM 0.3364 to ANN 0.6836. Looking at this degree of R² improvement as the effect size f² of Cohen (1988), it corresponds to a very large effect at 110%. Second, as a result of comparing changes in normalized variable importance through SEM-ANN two-stage analysis, variables with high importance in SEM were also found to have high importance in ANN, but variables with little or no importance in SEM became important in ANN. This study is meaningful in that it increased the validity of the comparison by using the same learning and evaluation method in the SEM-ANN two-stage analysis. This study is meaningful in that it compared the degree of improvement in prediction performance and the change in variable importance through SEM-ANN two-stage analysis.