• International Journal of Naval Architecture and Ocean Engineering
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• v.13 no.1
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• pp.102-114
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• 2021

Biofouling represents an important problem in the shipping industry since it causes the increase in surface roughness. The most of ships in the current world fleet do not have good coating condition which represents an important problem due to strict rules regarding ship energy efficiency. Therefore, the importance of the control and management of the hull and propeller fouling is highlighted by the International Maritime Organization and the maintenance schedule optimization became valuable energy saving measure. For adequate implementation of this measure, the accurate prediction of the effects of biofouling on the hydrodynamic characteristics is required. Although computational fluid dynamics approach, based on the modified wall function approach, has imposed itself as one of the most promising tools for this prediction, it requires significant computational time. However, during the maintenance schedule optimization, it is important to rapidly predict the effect of biofouling on the ship hydrodynamic performance. In this paper, the effect of biofilm on the ship hydrodynamic performance is studied using the proposed performance prediction method for three merchant ships. The applicability of this method in the assessment of the effect of biofilm on the ship hydrodynamic performance is demonstrated by comparison of the obtained results using the proposed performance prediction method and computational fluid dynamics approach. The comparison has shown that the highest relative deviation is lower than 4.2% for all propulsion characteristics, lower than 1.5% for propeller rotation rate and lower than 5.2% for delivered power. Thus, a practical tool for the estimation of the effect of biofouling with lower fouling severity on the ship hydrodynamic performance is developed.

• Journal of Industrial Convergence
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• v.19 no.6
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• pp.197-204
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• 2021

The purpose of this study was to examine the effect of sense of community on the quality of life of local residents and the mediating effect of residential satisfaction in the process to improve the quality of life. To this end, as a result of 1:1 survey through a face-to-face survey of 480 local residents in G, Gyeonggi-do, a total of 468 samples were finally analyzed excluding insincere answers. The analysis method was SPSS WIN 25.0, and the mediation model was verified using frequency analysis, descriptive analysis, correlation analysis, and regression analysis. As a result of the study, first, sense of community was found to have a positive (+) effect on quality of life and residential satisfaction. Second, residential satisfaction was found to have a positive (+) effect on the quality of life. Third, residential satisfaction was verified as a partial mediation in the relationship between sense of community and quality of life. Based on this study, the importance of the effect of residential satisfaction in the process of local residents' sense of community affecting their quality of life and practical measures to improve the quality of life were presented.

• Journal of Digital Convergence
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• v.20 no.4
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• pp.203-213
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• 2022

The purpose of this study was to examine the effect of older workers career adaptability on turnover intention and to examine the mediating role of work engagement in the relationship between career adaptability and turnover intention and to investigate the effect of perception on older workers on work engagement. A total of 458 cases were analyzed. The major findings were as follows: First, it was found that there was a negative relationship between career adaptability and turnover intention. Second, it was found that work engagement meditated the relationship between career adaptability and turnover intention. Third, the mediation effect of work engagement in the relationship between career adaptability and turnover intention did not differ according to perception on older workers. Based on the findings, practical implications about older workers' career adaptability and the way how to hold older workers.

• Journal of Industrial Convergence
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• v.19 no.6
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• pp.165-175
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• 2021

The purpose of this study was to identify the crisis perception of the existence on home support service for older people and to make policy and practical suggestions for the workers who provide the on home support service for older people. For data collection, in-depth interviews were conducted by sampling four voluntary participants recommended by the Korea Association of Community Care For The Elderly 00city in the metropolitan area. As a result of the analysis, the main crisis-related factors of the home support service center for older people were found to be three: psychological, policy, and role. First, in terms of policy, not only could they not actively accept policy changes, but there were limits to their efforts for change. Second, in the psychological aspect, identity confusion and negative perception in the community. Third, in terms of roles, there was a disappointment in the active roles and support of institutions, corporations, and associations.

• Journal of Practical Agriculture & Fisheries Research
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• v.22 no.1
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• pp.79-85
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• 2020

The current study is the first paper on FPT(failure of passive transfer) of horse population in Korea. The object of this study was to comparison of immune status normal and patient horses. Failure of passive transfer is the most common immunodeficiency disorder of horses. Twenty-two foals and 18 horses from Jeju of the equine hospital were diagnosed with the SNAP Foal IgG Test Kit. All adult horses had normal immune functions (≥800 mg/dl). Thirteen of the 22 newborn babies (59%; ∠800 mg/dl) had a weak immune function but recovered and survived after treatment. Nine of these 22 are horses with strong immunity (≥800 mg/dl), indicating that high IgG concentrations in the blood can cause infectious diseases. There were a total of six dead, four of which were infectious diseases. In addition, early identification of infectious diseases in newborn foals is expected to help prepare systematic health management measures for the development of the disease.

• Journal of Industrial Convergence
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• v.20 no.7
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• pp.107-113
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• 2022

The purpose of this study is to identify the effect of the job environment of nursing care workers on organizational commitment and to verify the mediating effect of job satisfaction based on this. Data collection was conducted on 340 nursing care workers, centering on elderly care facilities in Gyeonggi-do, and the uncollected questionnaires and abnormalities were removed and the final 267 were selected as the subjects of the study. Data analysis results were derived through SPSS WIN 2.0 and PROCESS Macro V3.5, and Hayes (2013)'s Macro Model Number 4 was applied to verify the mediating effect of job satisfaction. As a result of the analysis, the partial mediating effect of the job satisfaction was confirmed in the effect of the job environment of the caregiver on organizational commitment. Based on the analysis results, practical and policy suggestions for improving the job environment and increasing job satisfaction of nursing caregivers, and follow-up studies were proposed to overcome the limitations of this study.

• KSII Transactions on Internet and Information Systems (TIIS)
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• v.16 no.6
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• pp.1973-1993
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• 2022

Model-driven engineering (MDE) and aspect-oriented software development (AOSD) contribute to the common goal of development of high-quality code in reduced time. To complement each approach with the benefits of the other, various methods of integration of the two approaches were proposed in the past. Aspect-oriented code generation, which targets obtaining aspect-oriented code directly from aspect models, offers some unique advantages over the other integration approaches. However, the existing aspect-oriented code generation approaches do not comprehensively address all aspects of a model-driven code generation system, such as a textual representation of graphical models, conceptual mapping, and incorporation of behavioral diagrams. These problems limit the worth of generated code, especially in practical use. Here, we propose AJFCode, an approach for aspect-oriented model-driven code generation, which comprehensively addresses the various aspects including the graphical models and their text-based representation, mapping between visual model elements and code, and the behavioral code generation. Experiments are conducted to compare the maintainability and reusability characteristics of the aspect-oriented code generated using the AJFCode with the most comprehensive object-oriented code generation approach. AJFCode performs well in terms of all metrics related to maintainability and reusability of code. However, the most significant improvement is noticed in the separation of concerns, coupling, and cohesion. For instance, AJFCode yields significant improvement in concern diffusion over operations (19 vs 51), coupling between components (0 vs 6), and lack of cohesion in operations (5 vs 9) for one of the experimented concerns.

• Journal of Industrial Convergence
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• v.20 no.6
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• pp.117-123
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• 2022

Appearance, which is directly related to competitiveness, has become one of the essential self-care for modern people living in the era of the 4th industrial revolution. For the purpose of producing more practical and convenient wigs for suffering customers, data of research subjects were collected through an information search portal site. The trend of new material development of leading wig companies was analyzed. As a result of the study, it was found that many applications for wig attachment and binding technology were applied before 2005, artificial hair-related manufacturing technology for wigs from 2006 to 2013, and functional-related wig technology after 2014. In addition, both H and M companies showed the development trend of new materials for shape memory materials and nanoskins with their own characteristics. We believe that this study will be provided as basic data for the development of functional wigs that can lead to customer satisfaction while providing customers with a comfortable and convenient fit in the wig industry market.

• The Journal of the Korea Contents Association
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• v.22 no.10
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• pp.39-46
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• 2022

The overall digital transformation in society is rapidly progressing with the corona virus epidemic. In particular, in the field of cultural heritage and museums, digital transformation is taking place throughout the preservation, management, and utilization of cultural heritage. To respond to this, the importance of cultivating the digital literacy of museum professionals to select and utilize digital cultural heritage information is increasing. However, the current digital capacity education of museum professionals has not reached the cultivation of digital literacy due to one-way theory and one-way practical education. To overcome this, we propose a digital capacity building program using virtual museums. We propose a curriculum based on participatory museums, cooperative learning, and project-based learning theories. Learners experience the entire process of acquiring, selecting, and utilizing digital cultural heritage information through individual, cooperative, constant, exhibitions, and project-based learning programs. We were evaluated by experts in terms of education, museum education, and ICT technology education to prove its usability and derive improvements. This study will contribute to building the digital capacity of museum professionals.

• Journal of Digital Convergence
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• v.19 no.11
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• pp.201-213
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• 2021

This study investigated the relationship between emotional leadership with innovative behavior and job engagement, and verified the mediating effect of job engagement in order to facilitate theoretical and practical development of emotional leadership. For empirical analysis, data were collected from the sample of 260 employees of public institutions. The data collected were analyzed using SPSS 23.0 and AMOS 23.0 to verify the hypothetical relationship. Results showed that emotional leadership was positively related to job engagement but not innovative behavior. Job engagement was positively related to innovative behavior. And further, job engagement is found as playing as a positively full mediator on the relationship between emotional leadership and innovative behavior. These results confirmed that the job engagement of the members formed by emotional leadership in public organizations, such as general companies, has a positive influence on innovative behavior. Finally, limitations were indicated and some possible directions for Innovative behavior and its relationship were suggested for future studies.