• Journal of Korea Entertainment Industry Association
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• v.13 no.6
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• pp.287-295
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• 2019

The purpose of this study was to identify the factors affecting mental health status according to gender of persons with physical disabilities and to try their healthy life. Using the 6th Korean Retirement and Income Study, 333 persons with physical disabilities were included in the study. Descriptive statistics, t-test, and regression analysis were conducted to examine the general characteristics, instrumental activities of daily living, material support, and the effects on mental health status. There was no statistically significant difference in mental health status by gender, but there was a difference in Instrumental Activities of Daily Living and life satisfaction. In the case of males, instrumental daily activities performance, material support, depression, and life satisfaction were found to be influential. In the case of females, spouse, depression, and life satisfaction were factors affecting mental health status. Based on the results of this study, we will be able to understand persons with physical disabilities and use them as a basis for developing mental health promotion programs.

• Journal of Industrial Convergence
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• v.22 no.1
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• pp.85-93
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• 2024

The purpose of this study was to examine the relationship between high-intensity physical activity (work) and beverage intake frequency among Koreans. The data used in this study were obtained from the 8th Korea National Health and Nutrition Examination Survey(KNHANES) conducted in 2021. Statistical analyses, including χ²-test, and binary logistic regression, were conducted to examine group differences(p<0.05). It was found that 63.6% of the group consumed carbonated water once a week or less, and 68.6% consumed energy drinks once a week or less. These results indicated that carbonated water and energy drinks were more frequently consumed among individuals engaging in high-intensity physical activity(work), and that the majority of beverages were consumed once a week or less. Based on the findings of this study, it was hoped that the results can serve as a basis for the development of healthier alternative beverages to replace carbonated water and energy drinks during high-intensity physical activity(work). Additionally, it highlights the importance of exploring new approaches that promote health and the need for intervention programs aimed at improving health.

• Fashion & Textile Research Journal
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• v.15 no.2
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• pp.286-293
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• 2013

This study investigates the attachment of glycyrrhizin to fabric using an X-ray photoelectron spectrophotometer( XPS). XPS spectra analysis showed that carbon content on treated fabrics with 0.2% glycyrrhizin increased to 2.699% for silk, 2.829% for nylon, 1.505% for cotton, respectively. The results show that glycyrrhizin is absorbed on treated fabrics. The glycyrrhizin extraction method makes radix glycyrrhizae powder 10g treat the first and the second treatment with ethanol, remove impurities on $75^{\circ}C$; subsequently, it is treated for 10 hours with ethanol 75% on $85^{\circ}C$ and lyophilizated. As the result, glycyrrhizin is extracted 1.7g in GL-I, 1.1 g in GL-II. As the result of abstracting glycyrrhizin with two methods, pure glycyrrhizin was abstracted 45.9% in GL-I, 74.9% in GL-II. GL-I, GL-II; in addition, glycyrrhizin( Japan) on TLC plate was separated in Rf 0.6. By GL-II extract method, this experiment obtained glycyrrhizin 15 g treated in a bath ratio set to 1: 100. Silk fabric was treated at $80^{\circ}C$, 60 min. in, nylon fabric $10^{\circ}C$, 70 min., and cotton fabric $30^{\circ}C$, 80 min.; subsequently, silk, nylon, cotton fabrics showed a 99.9% antibacterial activity for Staphylococcus aureus and Klebsiella pneumoniae.

• Proceedings of the Korea Technology Innovation Society Conference
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• 2017.11a
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• pp.263-287
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• 2017

본 연구는 연구개발의 기술적 성과에 비하여 상대적으로 저조한 경제적 성과를 제고하기 위해 중소기업의 기술사업화를 촉진하는 한국형 기술사업화 모델 및 이를 위한 과학적 연구방법론 제시를 목적으로 하고 있다. 먼저 기술사업화의 성공실패에 관련된 연구 중 하나인 신제품개발에서 경제적 성과에 긍정적인 영향을 미치는 요인들을 선행연구를 통해 확인하고 우리나라 중소기업의 기술사업화 추진실태와 과제를 진단한다. 다음으로 세계 R&D 동향과 국내 대기업에서 추진하고 있는 6시그마 연구혁신 모델 및 기술사업화의 경제적 성과를 제고하기 위한 과학적 연구방법론 벤치마킹 분석 등의 결과를 토대로 우리나라 중소기업들이 수행하는 연구개발의 기술적 성과는 물론 경제적 성과도 제고할 수 있는 시장중심 R&D를 위한 한국형 기술사업화 모델과 이를 위한 5가지 과학적 연구 방법론을 제시한다. 1990년대 후반부터 등장하기 시작한 새로운 R&D동향은 사업부나 고객뿐만 아니라 공급자 등 외부 파트너들과의 상호 긴밀한 협력 하에 이들의 명시적인 니즈는 물론 암묵지 형태의 니즈까지도 파악하여 이를 R&D 활동에 반영하기 시작하였다. 특히 기업은 1980년대 정보화 진전, 변화의 가속화에 따라 연구과제의 성공이 바로 기업발전으로 연결되지 않는다는 것을 자각하기 시작했다. 단순히 R&D 활동만을 중시하는 것이 아니라 기술을 어떻게 마케팅과 연계시킬 것인가가 더욱 중요하게 되었다. 신기술을 신시장에 연결시키는 것이 용이하지 않지만, 성공 시에는 높은 가치창출을 기대할 수 있으므로 기업들은 R&D활동 보다 높은 가치를 창출하려는 활동에 관심을 가져야만 한다. 이와 같은 글로벌 환경 변화에 능동적으로 대처하고 제4차 산업혁명시대 중소기업의 연구개발 투자가 경제적 성과로 촉진될 수 있도록 본 연구에서 제시된 시장중심 R&D를 위한 한국형 기술사업화 모델과 5가지 과학적 연구방법론이 크게 기여하기를 기대해 본다.

• Journal of the Korea Computer Industry Society
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• v.6 no.3
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• pp.495-508
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• 2005

Moving objects are spatiotemporal data that change their location or shape continuously over time. Their location coordinates are periodically measured and stored i3l the application systems. The linear function is mainly used to estimate the location information that is not in the system at the query time point. However, a new method is needed to improve uncertainties of the location representation, because the location estimation by linear function induces the estimation error. This paper proposes an application method of the cubic spline interpolation in order to reduce deviation of the location estimation by linear function. First, we define location information of the moving object on the two-dimensional space. Next, we apply the cubic spline interpolation to location estimation of the proposed data model and describe algorithm of the estimation operation. Finally, the precision of this estimation operation model is experimented. The experimentation comes out more accurate results than the method by linear function.

• Journal of Convergence for Information Technology
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• v.11 no.6
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• pp.14-23
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• 2021

The Army is making efforts to increase combat power by incorporating technologies related to the Fourth Industrial Revolution into the field of defense. In order to utilize these technologies, it is necessary to develop a military tactical communication system that enables transmission and reception of data between command and control system and weapon systems. Therefore, in this paper, we analyze the tactical communication systems of the other countries, derive the limitations of the tactical communication system currently operating in the military. And, a multi-layered integrated operation structure centered on satellites and plans to provide communication on the move to small units are reviewed. Then, we present the necessity of a large-capacity transmission speed by predicting the amount of data that will be generated from weapon systems of the future, and a plan to efficiently manage the network using intelligent network technology.

• Informatization Policy
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• v.28 no.2
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• pp.3-33
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• 2021

The purpose of this study is to analyze the research trends in the field of Blockchain that is one of the core technologies of the 4^th Industry, and present future research orientation. In this study, (1) Blockchain technologies in business perspective are summarized; (2) analysis criteria of Blockchain fields are established; and (3) results of analysis are presented and future research orientation is proposed. Major findings are as follows: (1) related research is being activate with the advent of the 3rd generation blockchain which aims for distributed applications. (2) major concerns of the technology (engineering) field is blockchain scalability and of the business (application) field is blockchain-based supply chain traceability. (3) Compared to overseas, domestic research results are very poor. (4) to catchup the gap, the spreading of awareness that blockchain is not a technology but a business means is required.

• Journal of Korean Society of Occupational and Environmental Hygiene
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• v.32 no.4
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• pp.325-339
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• 2022

Objective: This study was to perform to identify the distribution characteristics and related factors of work-related low back pain among manufacturing workers in Korea. Methods: We analyzed the third(2011) through sixth(2020) Korean Working Conditions Survey. This study examined changes in the prevalence of work-related low back pain among manufacturing workers and related factors, including demographic characteristics and working conditions. Results: The prevalence of work-related low back pain showed a general tendency to increase during the study periods except for the 5th wave. The prevalence of work-related low back pain was higher in women than in men. The prevalence increased with increasing age and decreased with higher educational attainment. This trend was observed in all survey waves. The prevalence ratios for work-related low back pain according to working conditions varied over the survey period. In general, workers with manual jobs, long working hours, and exposure to tired or painful postures showed relatively higher prevalence ratios than did their counterparts. Providing Information on health and safety, perception that work affects health, and experience of presenteeism were identified as influencing factors for work-related low back pain. Although the working environment is improving, work-related back pain is on the rise. A multifaceted study on risk factors for work-related low back pain is needed. Conclusion: Work-related low back pain is a significant factor affecting the working population's quality of life. The prevalence of work-related low back pain showed a tendency to increase during the study periods. A multifaceted study on risk factors for work-related low back pain is needed.

• Journal of the Korean Data and Information Science Society
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• v.27 no.6
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• pp.1465-1475
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• 2016

In order to secure safe meals, the hazards of microorganisms associated with food poisoning accident should be monitored and controlled in real situations. It is necessary to determined the correlation between existing common bacteria number (aerobic plate count; APC) and RLU (relative light unit) in cookware. In this paper, we investigate the correlation between ATP (RUL) and APC (CFU) by using three types of transform (inverse, square root, log transforms) of raw data in two steps. Among these transforms, the log transform at the first step has been found to be optimal for the data of cutting board, knife, soup bowl (stainless), and tray (carbon). The square root-inverse and the square root-square root transform at the second step have been shown to be optimal respectively for the cup and for the soup bowl (carbon) data.

• International Area Studies Review
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• v.14 no.1
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• pp.33-53
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• 2010

This study has analysed riffle effect of shipbuilding business on regional economy in Jeonnam. For the analysis on connection to regional business, the most favored way to estimate economic effect of a certain industry in the nation and overseas, has been adopted. As a result of analysis, in case of 1,908,800 million won turnover in shipbuilding in Jeonnam, it would induce about 3,038,624 million won of production, about 940,656 million won of added value, about 13,361 employment and about 702,056 million won of income. Seeing production riffle effects of shipbuilding industry in Jeonnam on other businesses in the same area, it is found out to influence in order of on the primary industry metal products 458,784 million won, chemical products 128,250 million won, metal products 71,498 million won and on petrol and coal products 50,829 million won. Like this, shipbuilding industry is highly connected with metal and chemical industries, which make a cluster in eastern area of Jeonnam, suggesting that growth of shipbuilding industry in Jeonnam would maximize inter-industrial synergy effect in the region.