• Journal of the Korean Institute of Illuminating and Electrical Installation Engineers
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• v.23 no.8
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• pp.110-115
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• 2009

Recently, there has been a growing global interest in environmental conservation, and the field of electric power equipment has been working to become more environment-friendly. Accordingly, the low noise cooling fan of power transformers was developed through the improvement of blade shape. These are expected to apply to existing power transformers and low noise transformers. It is essential for low noise fan to possess good cooling performance as well as low audible noises. But, there was not analysis on the audible noise level and the cooling performance for low noise cooling fans until present. In this paper, we measure the audible noise level and the flow rate of low noise cooling fans to inspect the performance, Also, we confirmed that the low noise cooling fan is available to apply to power transformers through temperature rise tests of power transformers.

• Journal of Korean Clinical Nursing Research
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• v.29 no.3
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• pp.312-326
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• 2023

Purpose: This study attempted to analyze the staffing level and critical care nursing fees of intensive care units at tertiary and general hospitals and to provide a professional judgment-based recommendation on staffing level and critical care nursing fee schedules. Methods: Staffing grades and critical care nursing fee schedules for the first quarter of 2017~2020 and the fourth quarter of 2020~2022 were analyzed. A survey was conducted on nursing managers and nurses about the current and appropriate staffing levels. A total of 77 nurse managers and 708 nurses working in Intensive Care Unit(ICU)s at tertiary and general hospitals participated in the study. Results: Grade 1 staffing increased from 25.6% in 2017 to 92.1% in 2022 at tertiary hospitals and from 0.8% in 2017 to 28.4% in 2022 at general hospitals. The current staffing ratios of tertiary and general hospitals were 1:2.21 and 1:2.77, respectively. The appropriate staffing ratio according to nurse managers and nurses was 1:1.00 in patients with more than a ventilator application and 1:2.00 in patients without any ventilator application in tertiary hospitals, and it was 1:1.25 in patients with more than a ventilator application and 1:2.00 in patients without any ventilator application in general hospitals, respectively. Conclusion: The appropriate staffing level was suggested from 1:1.0 to 1:2.0. The new nursing fee schedules were suggested from 1:1.0 (Grade 1) to 1:3.0 (Grade 5) and recommended to be paid based on the staffing grade, minimum number of nurses, and standard annual working days. It is expected to increase staffing levels and provide a better nursing work environment.

• Korean Journal of Construction Engineering and Management
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• v.20 no.6
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• pp.81-88
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• 2019

Recently, the government has shown a decrease in disaster accidents throughout the industry and construction industry due to various efforts to reduce disasters. However, the fall accidents in the construction industry are not decreasing but increasing. In particular, the fall accident caused by scaffolding is low each year, but the disaster intensity is very high in that it directly leads to the death of workers. Scaffolding working environment in domestic construction industry is very poor. Moreover, scaffold workers in small construction sites are not subject to safety oversight and control. Therefore, this study is the installation and non-installation of the vertical lifeline, which is the most fundamental problem to be prevented during the study, to prevent the fall of the moon scaffold. In addition, it is hoped that it will be a solution for preventing accidents in construction site construction through the identification of various causes of disasters such as rope loosening, rope breaking, and fixed point failure.

• Analytical Science and Technology
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• v.27 no.5
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• pp.243-247
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• 2014

Formaldehyde is defined as carcinogen causing leukaemia, lymphoma or nasopharyngeal carcinoma at high level of exposure. Furniture-manufacturing workers can be exposed to formaldehyde, which implies serious impact on health of the workers. The authors carried out ambient monitoring of formaldehyde in the field, and identified the source of formaldehyde generated during the working process by testing the condition in the laboratory settings. After sampling formaldehyde in the air with 2,4-DNPH (2,4-dinitrophenylhydrazine) coated silica gel, we extracted formaldehyde derivative with acetonitrile and analyzed the extract using HPLC with UV detector at 360 nm. Formaldehyde was separated by ACQUITY UPLC BEH $C_{18}$ column at a flow rate of 0.5 mL/min using 45% acetonitrile as mobile phase. The workers were exposed to higher level of formaldehyde than normal air. Formaldehyde up to 0.31 ppm was detected in the process of veneer attachment, which exceeded 0.3 ppm, the ceiling value of ACGIH standard. The laboratory test of measuring formaldehyde generated from the glue and veneer used in the attachment process resulted in more formaldehyde generation as the temperature increased, and more from the veneer. Heating the veneer to $100-150^{\circ}C$ following the real condition of the manufacturing site generated 1.14-2.70 ppm of formaldehyde from the sample, which was 2-5 times higher level than Korean limit of exposure (0.5 ppm). As the workers handling and processing the veneer which was produced by wet process had high possibility to be exposed to formaldehyde, urgent improvement and management of working environment of furniture manufacturer is demanded.

• Food Science and Preservation
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• v.13 no.2
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• pp.234-240
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• 2006

The purpose of this study was to evaluate microbiologically cooking utensils, equipment employees, and environment in 12 large Korean, Western, Chinese, and Japanese restaurant. Microbiological testing was conducted for pathogens including E. coli, Samolnella, L. monocytogenes, S. aureus, E. coli O157:H7, V. parahaemolyticus, B. cereus, and Y. enterocolitica as well as total plate count and coliforms. The results showed cooking water and drinking water in some Korean restaurants and drinking water in some Western and Japanese restaurants were unsatisfactory, especially, barley tea, which was cooled after being boiled, was unsatisfactory. Most cooking utensils such as knives, cutting boards, kitchen towels, tongs, and basket had total plate and coliforms count in excess of standards, and knives and cutting boards at some Chinese restaurant had E. coli. At some restaurant, S. aureus was found on some food worker's hands. Also, the total plate count of the air showed a high count around worktables, inside the refrigerator, and in the kitchen in most restaurants. These result suggest that sanitation needs improvement in the environments in these foodservice establishment.

• KIPS Transactions on Computer and Communication Systems
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• v.13 no.1
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• pp.10-20
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• 2024

As the online commerce market continues to expand with an increase of diverse products and content, users find it challenging in navigating and in the selection process. Thereafter both platforms and shopping malls are actively working in conducting continuous research on recommendations system to select and present products that align with user preferences. Most existing recommendation studies have relied on user data which is relatively easy to obtain. However, these studies only use a single type of event and their reliance on time dependent data results in issues with reliability and complexity. To address these challenges, this paper proposes a recommendation system that analysis user preferences in consideration of the relationship between various types of event data. The proposed recommendation system analyzes the correlation of multiple events, extracts weights, learns the recommendation model, and provides recommendation services through it. Through extensive experiments the performance of our system was compared with the previously studied algorithms. The results confirmed an improvement in both complexity and performance.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.20 no.2
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• pp.498-508
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• 2019

This is a comparative descriptive research conducted to compare work obstacles and safety culture perceptions of elderly welfare facility employees in Korea and Japan. The number of subjects are total 680 including 460 Japanese employees, working at elderly welfare facility in city 'N', and 220 Korean employees in city 'A' and 'S' of province 'K'. This study had been conducted from April 1, 2018 to August 30, 2018 and the data was analyzed by x2-test, t-test, ANOVA. As a result, work obstacles were korea and japan, there were no statistically significant differences between two groups. In the safety culture perceptions, employees of elderly welfare facility in Korea showed significantly higher level of safety culture perception than employees of that in Japan. furthermore, it is revealed in both countries that the less work obstacles they have, the higher safety culture perceptions they get. And it is a work obstacles that affects safety culture perceptions. Lastly, it is expected that the result of this study can be used as basic data for the improvement of working environment and for the strategy development in human resource management to enhance the safety culture perceptions and to reduce work obstacles.

• The Journal of the Convergence on Culture Technology
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• v.9 no.6
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• pp.981-992
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• 2023

This study, the effect of organizational culture perceived by millennial Naval Personnel working on naval ships on organizational citizenship behavior was empirically analyzed. First, it was found that OC(group/hierarchy) had a positive effect on OCB. Second, affective commitment plays a mediating role in the relationship between OC(group/hierarchy) and OCB. It was confirmed that organizational culture has a direct effect on OCB, but also indirectly through affective commitment. Third, Coworker social loafing had a negative moderating effect in the relationship. Therefore, in order to improve organizational citizenship behavior, it is necessary to improve a balanced organizational culture suitable for changes in the organizational environment, Strengthen the key influencers for organizational members to affective commitment themselves in the organization, and promote improvement in social loafing.

• Journal of Digital Convergence
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• v.9 no.6
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• pp.91-102
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• 2011

Smart work is deeply embedded in our contemporary lives. This is called Smart Life. The expansion of communication, caused by smart life is utilized for the political purposes of politicians, political candidates, and political policies. Chiefly, smart life includes improvement in awareness, personal relations, and policy advocacy. Socially, smart life leads the proliferation of issues and civil movement. In particular, smart life has a significant effect on culture. In the case of K-POP, it is disseminated going beyond space time. It enhances economic value added by joining and sharing at the same time. Smart life has numerous advantages such as improving the quality of life, but it might cause inconvenience depending on users because there are differences in acceptance according to generations. Due to the heavy weight on the device, there are some side-effects such as lacking in human thinking, disclosure in private life, lacking in basic securities, increase in information addicts who are anxious when they do not get on the Internet or SNS, and interference with work. However, this inconvenience can change into convenience when users are accustomed to it. Like this, smart life influences politics, economy, society, and culture a lot. Working environment of smart life is a new paradigm, which can generate high performance through working in an exciting and bright atmosphere with easy economy and putting value on results.

• 한국노년학
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• v.37 no.3
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• pp.549-565
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• 2017

A high-quality workforce is essential to delivering the high-quality care for the older people who are beneficiaries of long term care insurance. Providing adequate education and ongoing training opportunities could be one answer that may lead to the ultimate goal of improving the quality of long-term care services. Thus this study aimed to examine a workforce crisis and difficulties that care workers face in current education system, especially in contents and administration aspects and draw out suitable solutions or improvement measures. The focus group interview approach was chosen to reflect opinions of long-term care workers, directors of the education system in long-term care facilities and managers. The findings from the focus group interviews were analyzed by theme and classified into several categories by common subjects:'Training contents', 'Training environment', 'Administrator', 'Compulsory training', 'Care givers supply', 'Working condition'. Also, four content areas were presented as follows:'Job training', 'Dementia care training', 'Administration system', 'Workforce'. The caregivers demand very practical training programmes and trainers with a lot of field experience. Improving the working condition and treatments for them leeds to expand the opportunity of the on-going training.