• The Journal of the Korea Contents Association
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• v.21 no.5
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• pp.695-706
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• 2021

The purpose of this study was to establish entrepreneurship(risk taking, proactiveness, innovativeness), entrepreneurial self-efficacy, and entrepreneurial intention as a structural equation model to confirm the entrepreneurial intention of university students. In order to achieve the purpose of this study, 449 students from 3 university students in Gyeonggi-do were studied, and data analysis was conducted with SPSS 23.0 and AMOS 23.0 statistical programs. The results of the empirical analysis are as follows: First, Among university students' entrepreneurship, proactiveness was not statistically significant to entrepreneurial intention but, risk taking and innovativeness have been identified as having a direct impact. Second, University students' entrepreneurial self-efficacy directly affects entrepreneurial intention. Third, risk taking and innovativeness were statistically significant, but proactiveness was not affected. Finally, through the mediating of entrepreneurial self-efficacy, risk taking effects were fully sold to entrepreneurial intention, and innovativeness was partially sold to entrepreneurial intention. Based on the results of this study, the way to enhance university students' entrepreneurial intention is to develop programs that can improve their entrepreneurial self-efficacy and apply them actively to university education. In particular, university students need mentoring support from on-site entrepreneurial experts and internship education support to increase risk taking and innovativeness as prospective founders. The government can lead to entrepreneurial behavior when economic and institutional support precedes university students to recover from their initial entrepreneur.

• Journal of the Korean Society of Marine Environment & Safety
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• v.28 no.2
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• pp.414-421
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• 2022

Subsea oil and gas exploration is increasingly moving into deeper water depths, and typically, subsea pipelines operate under high pressure and temperature conditions. Owing to the difference in these components, the axial force in the pipe is accumulated. When a pipeline is operated at a high internal pressure and temperature, it will attempt to expand and contract for differential temperature changes. Typically, the line is not free to move because of the plane strain constraints in the longitudinal direction and soil friction effects. For a positive differential temperature, it will be subjected to an axial compressive load, and when this load reaches a certain critical value, the pipe may experience vertical (upheaval buckling) or lateral (snaking buckling) movements that can jeopardize the structural integrity of the pipeline. In these circumstances, the pipeline behavior should be evaluated to ensure the pipeline structural integrity during operation in those demanding loading conditions. Performing this analysis, the correct mitigation measures for thermal buckling can be considered either by accepting bar buckling but preventing the development of excessive bending moment or by preventing any occurrence of bending.

• Informatization Policy
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• v.29 no.1
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• pp.38-59
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• 2022

The development of IT technology and the spread of smartphones are having a great impact on businesses and consumers. Consumers have been able to acquire more diverse and larger amounts of information than in the past due to information provided through smartphones and information search on the internet, which has a significant influence on decision-making. Companies have also become sensitive to such changes in consumer behavior patterns, reflected in their marketing. In addition, among the various characteristics of smartphones, location-based technology has become an important factor in providing targeted marketing from a company's point of view. Such technological development and social change have led to the expansion of the mobile advertising market, which promotes products or services based on the location of consumers and provides benefits such as discount coupons. In this study, we have analyzed the influence of consumer characteristics on intention to use in mobile location-based advertising, which has become an important marketing method in the mobile advertising market. The effects of variables of personalization, engagement, coupon proneness, economic efficiency, and irritation on attitude and information privacy concerns were analyzed, and the effects of attitude and information privacy concerns on intention to use were analyzed. The results of this study are deemed to be able to suggest factors to consider when providing mobile location-based advertising to consumers in the future.

• Journal of the Korean Society of Marine Environment & Safety
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• v.28 no.4
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• pp.601-609
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• 2022

Jack-up drilling rigs are mobile offshore platforms widely used in the offshore oil and gas exploration industry. These are independent, three-legged, self-elevating units with a cantilevered drilling facility for drilling and production. A typical jack-up rig includes a triangular hull, a tower derrick, a cantilever, a jackcase, living quarters and legs which comprise three-chord, open-truss, X-braced structure with a spudcan. Generally, jack-up rigs can only operate in water depths ranging from 130m to 170m. Recently, there has been an increasing demand for jack-up rigs for operating at deeper water levels and harsher environmental conditions such as waves, currents and wind loads. All static and dynamic loads are supported through legs in the jack-up mode. The most important issue by society is to secure the safety of the leg structure against collision that causes large instantaneous impact energy. In this study, nonlinear FE -analysis and verification of the requirement against collision for 35MJ recommended by DNV was performed using LS-Dyna software. The colliding ship used a 7,500ton of shore supply vessel, and five scenarios of collisions were selected. From the results, all conditions do not satisfy the class requirement of 35MJ. The loading conditions associated with chord collision are reasonable collision energy of 15M and brace collisions are 6MJ. Therefore, it can be confirmed that the identical collision criteria by DNV need to be modified based on collision scenarios and colliding members.

• Journal of Nutrition and Health
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• v.55 no.3
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• pp.390-405
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• 2022

Purpose: This study was conducted to effectively apply the nutrition and hygiene education program for improving the nutritional status of the elderly aged 65 years and above. Methods: The first study was conducted by enrolling 121 willing elderly subjects from welfare centers in four regions of Chungbuk. The second study included 347 people from 10 regions of Chungbuk. Data were analyzed using the SPSS (version 12.0) and SAS (version 9.2) programs. Results: Most participants in both studies were women, ranging from 70-79 years of age. In the first study, the performance rates of subjects, after imparting the education on hygiene, eating habits, and nutritional knowledge, were significantly increased for all factors. Goesan and Boeun areas were highly effective in hygiene practice and eating habits after education. In the second study, Chungju had the most educational effect on hygiene education, with a score of 6.41 points before education and 7.68 points after education. The greatest impact of education on eating habits was obtained at Goesan, with 9.23 points and 11.26 points before and after education, respectively. Large regional differences were determined for the effect of the education program. For nutritional knowledge, the combined average score of Boeun and Goesan showed a maximum increase after education. When considering satisfaction, the scores of Cheongju and Jeungpyeong increased the most after education, whereas Goesan showed that the average scores before and after education were close to perfect. Surprisingly, the Okcheon area, where there was no significant difference in the educational effect after the education program in the first study, showed significant improvement for all factors after the second education program. The current study indicates that continuous education programs are essential for improving the nutritional status of the elderly. Conclusion: Therefore, continuous nutrition and hygiene education programs are recommended to improve the nutritional status of the elderly.

• The Journal of the Korea institute of electronic communication sciences
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• v.17 no.5
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• pp.913-926
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• 2022

As information is recognized as a core competency of organizations, organizations are increasingly investing in policies and technologies for information security(IS). Recently, as information exposure accidents by people have occurred continuously, interest in IS behaviors of organization insiders is increasing. This study aims to confirm the effect of the IS environment and support structure established by the organization on the intention of individuals to comply with IS. We conducted a survey of employees in organizations with IS policies and tested the hypothesis using the structural equation of AMOS 22.0 and Process 3.1 using 421 samples. As a result of the analysis, authentic leadership and justice climate, which are factors that build an IS environment, and communication and feedback, which are factors supporting IS compliance, have a positive effect on employees' compliance intention. In addition, authentic leadership, punishment, communication, and feedback were found to reinforce the positive impact of IS justice climate. As the study suggested the overall structural design direction to be pursued to reinforce insider's IS behavior, and the results help to achieve the IS goal.

• Journal of Life Science
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• v.31 no.12
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• pp.1120-1127
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• 2021

Depression has a negative impact on social functioning due to its high prevalence and increased suicide rate, and is a disease with a high economic burden. Depression is related to diverse brain-related phenomena, such as neuroinflammation, synaptic dysfunction, and cognitive deficit. As antidepressant drugs used in clinical trials have shown poor therapeutic effects, antidepressant drugs that show rapid efficacy urgently need to be developed. Although studies on various genes, proteins, and signaling pathways related to depression have been conducted, the pathogenesis of depression has not been clearly elucidated. Sirtuin 1 is a nicotinamide-adenine dinucleotide- (NAD+-) dependent histone deacetylase and is involved in cell differentiation, apoptosis, autophagy, and cancer metabolism. Recent genetic studies found that sirtuin 1 is a potential target gene for depression. In addition, preclinical studies reported that sirtuin 1 signaling affects depression-like behavior. In this review, we attempt to present up-to-date knowledge of depression and sirtuin 1. We describe the various roles of sirtuin 1 in the regulation of glial activation, circadian rhythm, neurogenesis, and cognitive function and the effects of its expression on depression. Further, we discuss the effect of sirtuin 1 on the impairment of neural plasticity, one of the key mechanisms of depression, and the associated mechanisms of sirtuin 1.

• Journal of Korea Entertainment Industry Association
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• v.15 no.5
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• pp.175-188
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• 2021

The purpose of this study was to grasp the influence of mental health upon the lifelong drinking experience in adolescents of non-capital area and capital area through using the 2019 Youth Health Behavior Survey Data. The research subjects included total 57,303 adolescents who participated in the survey among 60,100 adolescents at totally 800 schools with 400 middle schools and 400 high schools. Out of these, 29,384 middle school students and 27,919 high school students were selected. As a result of the research, the mental health that has significant influence upon the lifelong drinking and smoking experience in case of non-capital area appeared to be significant in the perceived subjective health (p<.01), cognitive stress(p<.001), relief from fatigue(p<.001), sadness & despair experience(p<.001), suicide ideation(p<.001), suicide plan(p<.01), and suicide attempt(p<.001). In case of capital area, the mental health of having a significant impact on the lifelong drinking and smoking experience was indicated to be significant in cognitive stress(p<.01), relief from fatigue(p<.001), sadness & despair experience(p<.001), suicide ideation(p<.001), and suicide attempt(p<.001). Based on this outcome, adolescents' drinking problem has influence upon mental health characteristic. Hence, an effort is needed for developing the intervention & education program aiming at the more effective youth drinking prevention through establishing direction and revaluing education program in consideration of mental health factors by region in adolescents of capital area and non-capital area.

• Knowledge Management Research
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• v.23 no.1
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• pp.89-109
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• 2022

Due to COVID-19 and soaring participation of individual investors, large-scale transactions exceeding system capacity limits have been reported frequently in the capital market. The capital market IT systems, which the impact of system failure is very critical, have encountered unexpectedly tremendous transactions in 2020, resulting in a sharp increase in system failures. Despite the fact that many companies maintained large-scale system capacity planning policies, recent transaction influx suggests that a new approach to capacity planning is required. Therefore, this study developed capital market IT system capacity planning models using machine learning techniques and analyzed those performances. In addition, the performance of the best proposed model was improved by using sentiment index that can promptly reflect the behavior of investors. The model uses empirical data including the COVID-19 period, and has high performance and stability that can be used in practice. In practical significance, this study maximizes the cost-efficiency of a company, but also presents optimal parameters in consideration of the practical constraints involved in changing the system. Additionally, by proving that the sentiment index can be used as a major variable in system capacity planning, it shows that the sentiment index can be actively used for various other forecasting demands.

• Korean Journal of Culture and Social Issue
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• v.28 no.2
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• pp.273-305
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• 2022

The purpose of this study is to understand and explore the essence of the self-care experiences of middle-aged one-person households considering their individual circumstances and situational context. In this study, 10 middle-aged people in one-person households were interviewed. The interview data were analyzed using the phenomenological analysis. In result, middle-aged one-person households considered self-care as 'means to protect themselves', 'preparation for their single life in late adulthood', and 'behavior to feel gratitude and happiness in the present.' Their motives for self-care were 'being aware of their physical aging and possibility of illnesse', 'feeling threatened about their safety', 'sensing that their daily livings may be at a risk', 'absence of a caregiven person who can take care of them', 'maintaining of their psychological health', 'being burned out from busy working schedules', and 'to lessen their own and their family's worries and anxiety.' Their specific ways of self-care were 'physical health care', 'private activities for emotional care', and 'meeting people.' Consequently, the self-care of middle-aged people had a positive impact on their work and relationships, lessened their sense of isolation, and brought comfort to their lives. Based on the results of the study, this study proposed the implications, limitations, and suggestions for further research.