• Nutrition Research and Practice
• /
• v.17 no.4
• /
• pp.812-825
• /
• 2023

BACKGROUND/OBJECTIVES: This study investigated the importance and performance level of sodium reduction practices in school meal service by school nutrition teachers and dietitians, and compared them according to school level and placement of the school nutrition teacher. SUBJECTS/METHODS: An online survey was conducted with 608 nutrition teachers and dietitians in schools in the Republic of Korea from September 28 to November 12, 2021 (response rate: 57%). The questionnaire comprised 11 items related to sodium reduction practices (purchasing, food preparation and serving, and education). The importance and performance level of each item was rated on a 5-point scale. The mean differences were analyzed using t-tests or one-way analyses of variance and Duncan's post-hoc tests. An importance-performance analysis was performed on sodium reduction practices. RESULTS: Participating in sodium reduction education, sodium reduction education for cooks, and sodium reduction education for students were assessed to have high importance but low performance. Overall, the higher the school level, the lower was the importance level of sodium reduction practices. The performance in kindergartens and elementary schools was higher than that in middle and high schools. The importance in the purchasing category perceived by dietitians was lower as compared to nutrition teachers. In addition, the performance in the purchasing, food preparation and serving, and education categories perceived by dietitians was lower than those of nutrition teachers. CONCLUSION: Sodium reduction education for nutrition teachers and dietitians, cooks, and students should prioritize practicing sodium reduction in school meal service. Specific guidelines for managing sodium reduction at all stages-purchasing, food preparation, and serving-should also be developed. The results could be used as basic data to reduce the sodium content in school meals.

• Journal of Gifted/Talented Education
• /
• v.26 no.3
• /
• pp.427-447
• /
• 2016

The purpose of this study was to investigate science gifted education recipients' perception through importance-performance analysis regarding gifted education program, and explore reinforcements and improvements for providing an education program to meet the needs of science gifted. For this study, we developed an questionnaire and conducted a survey of 288 university students who had experience of receiving science gifted education. The collected data was analyzed by SPSS 20.0 in order to analyze difference between importance and performance which recipients perceived, paired t-test was conducted. Moreover, to investigate improvements for education program, Importance-Performance Analysis(IPA) was conducted. We deduced the following from the analysis. The performance is in general lower than the importance which recipients perceived regarding experienced education program. There was a differential needs in the type of education program depending on the school level. In other words, they were perceived 'education based on experiences' as effective education program for elementary school students; 'education based on inquiry activities' for middle school students; and 'education based on research activities 'for high school students. But, career education and leadership program was included in domain of urgent improvement regardless to the school level. This study has different signification from previous research in that was analyzed gifted education program considering the splashdown effect.

• Korean Journal of Human Ecology
• /
• v.21 no.2
• /
• pp.389-405
• /
• 2012

The purposes of this study were to investigate students' perception on importance and performance of service quality of university foodservice, and to examine Importance-Performance Analysis(IPA) of foodservice quality for male and female students. A total of 500 university students in Daejeon were surveyed and 432 responses were returned. Excluding responses with significant missing data, 412 responses were used for data analysis. In terms of importance of service quality attributes, 'sanitation(4.74)' category received the highest score, followed by 'food(4.36)', 'service(4.22)', 'convenience(4.01)', 'menu(3.90)' and 'atmosphere(3.73)'. In terms of performance, the highest service quality attribute was associated with 'convenience(3.30)', followed by 'service(3.06)', 'sanitation(2.95)', 'food(2.88)', 'atmosphere(2.79)' and 'menu(2.68)'. As the results of IPA, 'staff's kindness', 'overall quality of service', 'taste of the food', 'freshness of the food', 'overall quality of the food', and 'cleanliness of the facility' fell into the Quadrant IV(Focus here) for female students. On the other hand, male students' IPA grid illustrated that 'taste of the food', 'freshness of the food', 'nutrition of the food', 'sanitation of the food', and 'sanitation of the utensils' fell into Quadrant IV(Focus here).

• Journal of the East Asian Society of Dietary Life
• /
• v.23 no.6
• /
• pp.850-861
• /
• 2013

This study aimed at investigating any differences perceived between the contractor and the contractee based on an importance-performance analysis (IPA) of foodservice quality attributes. Questionnaires were distributed to 200 personnel concerned in the Busan, Ulsan and Kyungnam areas and a total of 134 valid responses were used for analysis. Of the 23 foodservice quality attributes, the factors of 'food quality', 'employee service', 'hygiene and safety', 'customer orientation' and 'operation quality' were induced from a scale purification process through the exploratory factor analysis. The level of importance (p<0.01) of the 'hygiene and safety' factor and 'employee service' factor was not found to be significantly different between the groups. In the level of performance, the factors of 'food service', 'employee service', 'customer orientation' and 'operation quality' were found to be perceived significantly lower than expected by the contractor group. In the importance level, 'food quality', 'employee service', 'hygiene and safety', 'customer orientation' and 'operation quality' were rated by the contractor as 4.03, 4.30, 4.27, 4.01 and 4.12 points, respectively. In contrast, in the performance level, perceived 'food quality', 'employee service', 'hygiene and safety', 'customer orientation' and 'operation quality' were evaluated as 3.57, 3.94, 4.06, 3.83 and 3.95 points, respectively.

• The Journal of the Korea Contents Association
• /
• v.20 no.6
• /
• pp.156-166
• /
• 2020

This study was intended to investigate differences in the recognition of the importance and performance of clinical nutrition management by using IPA. For the study, 100 clinical nutritionists working at medical institutions were analyzed. In all 17 categories of nutritional management, significant differences were observed in awareness of performance and importance. The categories with the greatest difference in importance and performance awareness were the nutritionist's participation in clinical nutrition education and related job development activities(1.38), and the lowest categories were the provision of therapeutic meals(0.69). Since IPA analysis results showed that participation in clinical nutrition education and related task development were both low in importance and performance, it should be improved first. A way to improve is for nutritionists to receive internal and external education. Above all things, for effective treatment, policies to include clinical nutritionist in the category of medical personnel, and cooperation between the medical sector and nutrition service management are necessary.

• Journal of the Korea Convergence Society
• /
• v.11 no.6
• /
• pp.367-374
• /
• 2020

This study was conducted to provide basic data for prioritization of family support services by examining the importance and performance of family support for parents of children with special education. To achieve the purpose of the study, a questionnaire survey was conducted with 220 parents of children from special education nationwide. As a result of the study, the importance of all 29 family support service items was rated high, but the performance level was low, and statistically significant differences were found. In addition, as a result of analysis of importance and performance, family support services related to physical and physical well-being and disability-related support were evaluated as high-priority, low-practice services, and it was a task that should be presented as a priority in family support services. On the other hand, it was found that family support services in the areas of family interaction support or emotional well-being were considered to be services that should be avoided due to their low importance but high performance. Based on the results of these studies, the direction for the operation of family support services for children with special education needs to be suggested in the future.

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

• Geomechanics and Engineering
• /
• v.29 no.3
• /
• pp.369-376
• /
• 2022

Accurately evaluating and predicting the performance of facilities is a key task in establishing a maintenance strategy for facilities. The importance of performance evaluation is becoming more pronounced, especially when the aging of facilities requires a huge budget. In this study, performance assessment models were developed for road and railway tunnels. Delphi analysis was performed to identify sub-elements necessary to evaluate the performance of a tunnel. The relative importance of the evaluation factors was derived from the AHP analysis. The correlation analysis was performed between each assessment factor and the final result to verify the significance of the model. For the correlation analysis, the survey data measured through precision safety diagnosis in tunnels in use was applied. The cost effectiveness analysis was also conducted according to the scenarios with different composition of performance factors in order to improve the practical applicability of the evaluation model developed in this study.

• Journal of Korea Society of Digital Industry and Information Management
• /
• v.20 no.2
• /
• pp.1-10
• /
• 2024

For the purpose of predicting credit card customer churn accurately through data analysis, a model can be constructed with various machine learning algorithms, including decision tree. And feature importance has been utilized in selecting better input features that can improve performance of data analysis models for several application areas. In this paper, a method of utilizing feature importance calculated from the MDI method and its effects are investigated in the credit card customer churn prediction problem with classification trees. Compared with several random feature selections from case data, a set of input features selected from higher value of feature importance shows higher predictive power. It can be an efficient method for classifying and choosing input features necessary for improving prediction performance. The method organized in this paper can be an alternative to the selection of input features using feature importance in composing and using classification trees, including credit card customer churn prediction.

• Journal of Korean Society for Quality Management
• /
• v.23 no.3
• /
• pp.69-83
• /
• 1995

In a large number of literature on of inspection tasks, one of the most consistent findings is the existence of large and consistent differences among inspectors. It is possible that the individual difference is described by the difference of cognitive skills, because cognitive skills are required more than manual skills in inspection tasks. Therefore, a set of cognitive factors in human information processing may underly human performance in inspection tasks. In this study, a cognitive skill was described as the relative importance of the cognitive factors involved. A hierarchical task analysis and a fuzzy hierarchical analysis were used to represent how the importance of cognitive factors contribute to inspection performance. An experiment was conducted using the computer simulations of PCB inspection tasks. The results revealed that the subject group with better performance showed the importance weights of cognitive factors in the following rank; (attention, perception, judgement, classification, recognition)<(detection)$\ll$(memory). The results of the experiment can serve as a selection criterion for efficient inspection performance and the information of skilled learning for an inspection training program. The usefullness of a hierarchical task analysis and a fuzzy hierarchical task analysis for the analysis of cognitive tasks are also confirmed.