• Transactions of the Korean Society of Pressure Vessels and Piping
• /
• v.19 no.1
• /
• pp.36-43
• /
• 2023

Lots of researches have been conducted on in-vessel retention (IVR) to prevent or mitigate severe accident in nuclear power plants. Various methodologies were proposed and the external reactor vessel cooling was selected as a part of promising IVR strategy. In this study, the strategy is strengthened by enhancing the natural circulation performance through the adoption of insulation in the reactor cavity. A thermal analysis was carried out based on an assumed accident scenario and its results were used as boundary conditions for subsequent seven flow analysis cases. By comparing the natural circulation performance, effects of annular gaps and insulation shapes on the mass flow rate and flow velocity were quantified. The improvement in cooling performance can be reflected in actual design via detailed assessment.

• Journal of the Korean Society for Aeronautical & Space Sciences
• /
• v.30 no.2
• /
• pp.108-114
• /
• 2002

In this paper, nonlinear finite element analysis is performed to ensure structural safety and to suggest the design improvement of wing-to-fuselage joint of the KSR-III rocket. In the joint, wings are attached to fuselage by fitting wing attachment part into the groove on the fuselage frame, and load transfer between wing and fuselage frame is accomplished mainly throug the contact of two members as well as fastening bolts. The careful finite element modeling has been proposed for the purpose of analyzing problems with relatively complicated load path. The detailed bolt modeling is conducted and GAP elemets are used to simulate contact problem between joined members and bolts. The suggested design improvement is verified by structural testing and the analysis results are compared with test results.

• Korean Journal of Community Nutrition
• /
• v.9 no.2
• /
• pp.233-240
• /
• 2004

This study was design to grope the suggestions leading synergic effects by bridging the gap between headquarters and branch office, and so to identify the infra-system of contract foodservice management company (CFMC) necessary for operating any kind of branch office including school, hospital and business and industry (B＆I). Among 8 categories consisted of infra-system in CFMC, 'C8. Evaluation ＆ analysis for branch office's operation' was the most important category in the headquarter's viewpoint, while 'C3. Sanitation management system' was the most important category in branch office's viewpoint. In support and application, 'C3. Sanitation management system' was the highest category in both headquarters and branch offices including school, hospital and B＆I. As a result of analysis on gap between main and branch office in importance, support and application in 8 categories, the efforts of communication and community of perception for infrastructure were needed, because 'C4. Education ＆ training for human resource management (HRM) system' and 'C8. Evaluation ＆ analysis for branch office's operation' in importance, 'C2. Menu management system', 'C4. Education ＆ training for HRM system', 'C6. Facility ＆ utility support system' and 'C8. Evaluation ＆ analysis for branch office's operation' in support had a gap. Correlation analysis to grasp the relation between importance of infra-system and headquarters' support or branch office's application showed that headquarters's importance and support were correlated positively in 'C3. Sanitation management system', 'C6. Facility ＆ utility support system', 'C7. Customer satisfaction management system' and 'C8. Evaluation ＆ analysis for branch office's operation' and branch office's importance and application were correlated positively in 'C1. Procurement ＆ food processing system', 'C5. Management Information system', 'C7. Customer satisfaction management system' and 'C8. Evaluation ＆ analysis for branch office's operation'. Lastly, 'C6. Facility ＆ utility support system' in the branch office of school and hospital and 'C2. Menu management system' in the branch office of B＆I were high in importance, low in support and application, therefore Intensive support for these categories was needed. In conclusion, continuous check and improvement for categories, which were identified as an urgent problems to be solved in this study, among infra-structure qualifying for CFMC, would enable contract foodservice industry that has grown quantitatively till now to grow qualitatively.

• The Journal of Korean Association of Computer Education
• /
• v.15 no.6
• /
• pp.43-52
• /
• 2012

The ability to utilize information of learner can do self-directed learning that increases creativity of learner. But in the middle and high schools, if 2009 revision curriculum has to be enforce, the education of information knowledge and literacy is expected to leave the education undone at schools. Therefore the ability of leaners must develop through teaching in all subjects, and so the ability of teachers in the class is very important. We examined the actual conditions about the ability of pre-service and in-service teachers, and analyzed the gap of the ability between in-service and pre-service teachers. The indexes of total ability of in-service and pre-service teachers are shown to be 74.4 points and 50.5 points out of 100. The ability of pre-service teachers is on the level about 68-percent as compared with the ability of in-service teachers. Therefor the education offices of cities and provinces and the teacher training institutes must establish for improvement of the ability of pre-service teachers.

• The Journal of Korean Society for School & Community Health Education
• /
• v.22 no.2
• /
• pp.75-91
• /
• 2021

Purpose: The purpose of this article is to clearly describe research trends on health life expectancy using oral health indicators that have been published from 2010 to 2020 then suggest the direction of future research. Methods: Online academic databases in English (PubMed, Web of Science and Embase) were used to find those articles by applying a variety of keywords, including terms (adjusted life year, adjusted life expectancy, dental and oral). We identified relevant articles based on the following classification method of Mathers: (1) health gaps, (2) health expectancies. Results: Among 1,728 articles from the online databases, the final 13 studies satisfied the inclusion criteria and were selected for analysis. Health life expectancy studies indicate that research growth was recently achieved overseas. Among the literature collected in this study, 10 studies using health gap indicators yielded seven Disability-Adjusted Life Year (DALY), and three calculated Quality-Adjusted Life Year (QALY), which differed in the nature of the survey data used in the study measuring DALY and QALY. There are only three health expectancies and the number of papers were smaller than the health gap study. Conclusion: Establishing a foundation to calculate health life expectancy indicators through the development and improvement of oral health level are needed. More studies in the area of health life expectancy estimation research is based on actual prevalence and oral health-related quality of life are also needed.

• Journal of the Korean Dietetic Association
• /
• v.22 no.1
• /
• pp.53-69
• /
• 2016

The purpose of this study was to analyze the importance-performance of clinical nutrition management in convalescent hospitals. The research was carried out based on questionnaires administered from March to April, 2015 to 73 dietitians at 40 convalescent hospitals in the Gyeongnam area. There was a statistically significant difference between the mean scores for importance (4.01/5.00) and performance (2.95/5.00) of clinical nutrition management. The importance and performance grid analysis showed that participation in a nutritional management committee, administration of patients using a cooperation program among hospital departments, cooperation with a medical team on patient's nutrition status, nutrition initial assessment, nutrition care process for patients showing malnutrition, nutrition care process for tube feeding patients, management of a therapeutic diet, meal management using dietary slip instructions including a therapeutic diet, and explication of a therapeutic diet for patients scored high regarding importance and performance (doing great area). Medical records on patient's nutrition management, and nutrition counseling for requested patient scored low regarding the importance and high regarding performance (overdone area). Participation in medical rounds, personal nutrition education for patients, group nutrition education for patients, nutrition education for medical teams, development of a menu for therapeutic diet and standardized recipes, and provision of information on diet therapy for patients after discharge scored low regarding importance and performance (low priority area). Accreditation of convalescent hospitals and interest of medical professionals in clinical nutrition management were effective variables for the importance-performance gap of clinical nutrition management. In conclusion, the accreditation process and positive awareness of medical professionals with regard to clinical nutrition management had positive effects on reduction of the importance-performance gap in clinical nutrition management at convalescent hospitals. The strength of clinical nutrition management in the accreditation and development of an education program for increasing medical team or administrator interest in clinical nutrition management could lead to improvement of clinical nutrition management for elderly patients in convalescent hospitals.

• Korean Journal of Construction Engineering and Management
• /
• v.5 no.2 s.18
• /
• pp.202-210
• /
• 2004

Under the current competitive business environment, the complexity of procurement method, and the lack of engineering capacity in the construction engineering industry, a construction engineering firms require the business strategy and its performance measurement system. This study suggests a performance measurement model that could follow 'H' construction engineering firm's vision and strategy. The model utilizes the concept of Balanced Scorecard. The study proposes the four main performance perspectives such as financial, growth, internal efficiency, and improvement & learning through the long-term strategy analysis, SWOT analysis, and interviews of the employees. Also the study develops the critical success factor and the key performance indicators. The usefulness of the performance measurement model is validated through the gap analysis such as alignment analysis and consensus analysis.

• Culinary science and hospitality research
• /
• v.17 no.2
• /
• pp.140-152
• /
• 2011

The purposes of this study are to analyze the gap between foodservice personnel and customers, to urge foodservice providers to reconsider by identifying the problems in service delivery for customer satisfaction, and to deduce the recognition for foodservice quality improvement. The results of this study can be summarized as follows: the average perception score of personnel(3.78 out of 5) was higher than that of customers(3.79). In particular, the customers' perception of 16 attributes, which included 'overall lighting in the restaurant', 'creativity of the food', 'freshness of the ingredients' and so on, was significantly lower than personnel's. Both service providers and customers perceived that 'meal quality' was the highest and 'table setting' was the lowest among the 4 factors, but there was significant difference on 'interior space(p<.001)', 'meal quality (p<.01)', 'convenience(p<.01)' between the two groups. As a results of the quadrant analysis, 'Q3. dishes and bowls', 'Q6. cleanliness of the tables', 'Q12. display of the food', 'Q17. comfort of the interior space', 'Q18, room temperature', 'Q23. overall lighting in the restaurant', 'Q30. arrangement of the furniture and accessaries' were categorized into Quadrant A, all of which showed dissatisfaction of the customers due to the personnel's lower perception. Therefore, service providers have to perceive the gap between the two viewpoints and grant priority to these attributes to improve foodservice quality.

• Journal of the Korean BIBLIA Society for library and Information Science
• /
• v.26 no.1
• /
• pp.361-389
• /
• 2015

This research conducted questionnaire surveys of church library managers and volunteers in church libraries, in order to improve volunteer management in church libraries by the analysis of current situation and problems with regards to operating volunteer activities. Seventy one church library managers out of 101 church libraries, and 221 volunteers responded to the questionnaire. The survey results indicated that volunteers' satisfaction with their work and need for education and continuous motivation Perception gap was found between managers and volunteers on application of task and the reward system Based on the results, this research suggests the ways of improvement for operating and training volunteers in church libraries.

• Journal of Information Technology Services
• /
• v.16 no.3
• /
• pp.47-65
• /
• 2017

The reference guide for the cost of establishing the digital documents has been used as a basis for establishing the budget for the construction of the knowledge information resource. However, due to the abolition of the nominal unit price notification in terms of IT projects, it is necessary to conduct research to convert the standard of the current labor force grade standard to the national incompetency standard (NCS). In this study, we investigate and revise the system and contents of the current knowledge information cost estimation model. In specific, i) we conducted gap analysis of cost estimation model and existing NCS model. As the contents conforming for the construction of the knowledge information resource were not adoptable, we define the description of the construction of the knowledge information resource and to identify the core elements of NCS prior to the improvement of the cost model. ⅱ) then we proposed improve the cost model considering integration with newly proposed NCS model for knowledge information construction job. In order to ensure the validity of the application of NCS development and cost estimation model, the experts reviewed relevant contents and made plans for improvement by using experts from supply and demand groups of various fields of national knowledge informatization projects.