• Journal of Digital Convergence
• /
• v.20 no.5
• /
• pp.599-608
• /
• 2022

There has been criticism that the government-led makerspace did not reflect the actual demand of makers, so there was a limit to performance creation. In this regard, the study aims to diagnose the current status and problems of makerspace and to suggest the implication to respond to policy demand. To this end, we analyzed the current status of makerspace by utilizing the government documents. Then, we conducted a survey of SMEs related to ICT devices that experienced makerspace, and analyzed their opinions on D·N·A technology demand, management difficulties, and governments' support policies. As results, the study proposed several improvement measures to upgrade makerspace as a digital conversion platform as follows. First, due to the nature of the existing industry for introducing D·N·A technology, there is a limit for companies to enter the market on their own, so comprehensive support from the government is needed. Second, it is necessary to establish and expand an empirical test bed for the development of new products and services so that various types of metaverse contents can be discovered and digital transformation convergence models of existing businesses can be derived. Third, by modifying the support method to operate the makerspace as a platform that implements the government-led start-up support policy, boldly transfer what the private sector can do well to the private sector. The participants of Industry·University·Institute Collaboration should freely share ideas and help the common problem be solved. Based on the problems and the findings for improvement, it is expected that the current makerspace would be upgraded to a digital conversion platform suitable for the demand of the field.

• Asia-pacific Journal of Multimedia Services Convergent with Art, Humanities, and Sociology
• /
• v.6 no.7
• /
• pp.9-16
• /
• 2016

As life in a rapidly changing Internet age at home and abroad, large amounts of information are being used medical, financial, services, etc. Accordingly, especially hospitals, is an invasion of privacy caused by leakage and intrusion of personal information in the system in medical institutions, including clinics institutions. To protect the privacy & information protection of personal health medical information in medical institutions at home and abroad presented by national policies and de-identification processing technology standards in accordance with the legislation. By comparative analysis in existing domestic and foreign institutional privacy and de-identification technique, derive a advanced one of pseudonymization and anonymization techniques for destination data items that fell short in comparison to the domestic laws and regulations, etc. De-identification processing technology for personal health information is compared to a foreign country pharmaceutical situations. We propose a new de-identification techniques by reducing the risk of re-identification processing to enable the secondary use of domestic medical privacy.

• Journal of the Microelectronics and Packaging Society
• /
• v.30 no.3
• /
• pp.56-63
• /
• 2023

In this paper, we studied the effect of electron beam irradiation on sol-gel indium-gallium-zinc oxide (IGZO) thin films under air and nitrogen atmosphere and carried out the electrical characterization of the s ol-gel IGZO thin film transistors (TFTs). To investigate the optical properties, crystalline structure and chemical state of the sol-gel IGZO thin films after electron beam irradiation, UV-Visible spectroscopy, X-ray diffraction (XRD), and X-ray photoelectron spectroscopy (XPS) were carried out. The sol-gel IGZO thin films exhibited over 80% transmittance in the visible range. The XRD analysis confirmed the amorphous nature of the sol-gel IGZO films regardless of electron beam irradiation. When electron beam irradiation was conducted in a nitrogen (N₂) atmosphere, we observed an increased proportion of peaks related to M-O bonding contributed to the improved quality of the thin films. Sol-gel IGZO TFTs subjected to electron beam exposure in a nitrogen atmosphere exhibited enhanced electrical characteristics in terms of on/off ratio and electron mobility. In addition, the electrical parameters of the transistor (on/off ratio, threshold voltage, electron mobility, subthreshold swing) remained relatively stable over time, indicating that the electron beam exposure process in a nitrogen atmosphere could enhance the reliability of IGZO-based thin-film transistors in the fabrication of sol-gel processed TFTs.

• Proceedings of the Korean Society of Dyers and Finishers Conference
• /
• 2012.03a
• /
• pp.17-17
• /
• 2012

수송용 섬유소재는 자동차, 항공기 또는 선박 등의 교통 및 운송 분야에 기여하는 사용되는 섬유소재를 말하며, 내장재, 각종 호스류, 벨트류, 타이어, 안전용품, 필터류 등을 포함하고 일반적으로 섬유, 발포체, 고무, 플라스틱, 접착제 등 유기소재가 결합된 복합체이다. 기존 섬유기술의 혁신과 더불어 IT, NT, BT, ET 등 첨단 기술과의 융합에 의한 고성능 극한 슈퍼섬유, 나노 복합섬유 등의 신소재를 개발하여 산업 전반에서 플라스틱의 금속소재 대체수요를 증가시키고 산업자재의 고성능화, 고기능화, 다양화를 이루기 위해 다양한 노력이 진행하고 있다. 현재 수송용 섬유소재 산업은 기술의 연결고리가 부족하며, 선도기업 및 원천기술이 부족하며, 자동차용 섬유부품소재 관련 기업의 역량도 부족한 실정이다. 이에 광역경제권 연계협력사업을 통해 생산기반의 대경권(대구경북)과 수요중심의 동남권(부산경남)의 네트워크를 강화하여 완성품 업체 및 수요기업과의 네트워킹을 강화하고자 한다. 따라서 본 연구에서 수송용 섬유소재개발, 수송용 친환경 oam-skin 일체형 표피재 개발, 고속성형 복합소재 및 수송용 경량부품 개발, 초경량 고내열 고강도 섬유활용 하이브리드 wire & cable 개발 등 수송용 섬유소재를 개발하고, 또한 수송용 섬유소재의 생산-수요 연계를 통한 투자활성화, 기술개발, 소재 산업 육성을 강화하여, 산학연네트워크구축, 지역 간 협력 및 국제적 협력, 생산-수요기반의 연계협력시스템을 활용한 자립형 수송용 소재 공급기지 완비하는 데 목적이 있다.

• Journal of the Korean Magnetics Society
• /
• v.17 no.2
• /
• pp.90-94
• /
• 2007

We have fabricated porous aluminum oxide using flexible and thin aluminum foils with thickness of 0.025 and 0.2 mm. These foils were anodized with 0.3 M oxalic acid solution after being electropolished with ethanol/perchloric acid. During the anodization, the temperature of the electrolyte was maintained at $9^{\circ}C$ and the anodization voltage was varied between 0.4 and 40 V The surface of the anodized aluminum oxide was studied with a scanning electron microscope. From the scanning electron micrograph, we observed that when the voltage applied was above 1 V for a long period of time, due to a strong electrolysis reaction in electrolyte, the surface of the anodized oxide was destroyed. However, when the anodization voltage was less than 1 V, the anodization process was very stable and lasted much longer. Our results show that for a thin aluminum foil, unlike a thick plate, one requires small anodization voltage less than 1 V to form a porous aluminum oxide for long anodization time.

• Journal of Korea Technology Innovation Society
• /
• v.9 no.4
• /
• pp.688-714
• /
• 2006

This study empirically examined the career orientations of researchers who worked for government-sponsored research institutes. Specifically, we considered the individual level's variables of age, project, and organization characteristics as the influential factors of researchers' career orientations and then investigated the relationship between career orientation and work attitudes. The results, based on the survey about 373 researchers, showed that both project career orientation and technical transfer career orientation were higher as grade level or age was higher. Moreover, the preference of career orientation was changed according to the mission of institute and the project type. Finally, the study suggested some practical implications on career development management for government-sponsored research institutes and discussed the limitations and the further research directions on career development of researchers.

• Proceedings of the Korea Water Resources Association Conference
• /
• 2017.05a
• /
• pp.4-4
• /
• 2017

수문자료의 빈도해석은 자료의 독립성(independence)와 정상성(stationarity)를 가정하여 이뤄진다. 그러나 관측 수문자료에서 비정상성 현상이 발생하고 있다는 사실이 관측되면서 수문자료에 대한 비정상성 빈도해석에 대한 필요성도 커지고 있다. 본 연구의 목적은 수문자료의 빈도해석에서 가장 널리 사용되고 있는 Gumbel 및 GEV 분포에 대한 비정상성 빈도해석 모형을 개발하는 것으로, 이를 위해 비정상성 Gumbel과 GEV 모형의 매개변수를 시간에 따라 변하는 형태로 정의하였다. 비정상성 Gumbel 및 GEV 모형의 정확도를 알아보기 위해 비정상성 모형과정상성 모형을 이용하여 Monte Carlo 모의실험을 수행하였다. 모의실험은 다양한 조건의 재현기간, 표본크기, 매개변수 조건을 고려하여 수행되었다. 그 결과 비정상성 모형의 오차는 비교적 표본크기가 클 때 가장 작은 것으로 나타났다. 또한 복잡한 매개변수의 조합을 가지는 비정상성 모형은 모두 동일한 경향성을 가질 때 가장 작은 오차를 보이는 것으로 나타났다. 비정상성 GEV 모형의 경우는 확률수문량 산정에 음(-)의 형상 매개변수가 큰 영향을 끼치는 것으로 나타났다. 또한 본 연구에서는 비정상성 조건에서 다양하게 존재하는 비정상성 모형 중 어떠한 모형이 주어진 자료에 대해 가장 적절한 모형인지 결정하기 위해 모의실험을 수행하였다. 널리 적용되고 있는 AIC, BIC, likelihood ratio test에 대해 정상성 및 비정상성 Gumbel 모형을 이용하여 모의실험을 수행한 결과, AIC가 비정상성 모형 중 적정 모형 선택에 가장 효과적인 것으로 나타났다. 개발된 비정상성 Gumbel 및 GEV 모형의 적용성을 알아보기 위해 우리나라 연최대강우 자료에 적용한 결과, 위치 매개변수에 시간항을 고려하는 Gumbel 모형이 최적모형으로 가장 많이 선택되는 것으로 나타났다. 따라서 현재 우리나라의 연최대강우자료 중 경향성이 나타나는 자료에 대해서는 위치 매개변수가 시간에 따라 변하는 특성이 가장 많이 나타나고 있는 것으로 판단된다.

• Korean Journal of Community Nutrition
• /
• v.25 no.6
• /
• pp.512-519
• /
• 2020

Objectives: A cross-sectional study was conducted to investigate the associations between food groups and hearing loss. Methods: Data of 1,312 individuals were used from the Korea National Health and Nutrition Examination Survey 2013. Hearing loss was determined with a pure tone average (PTA) of greater than 25 dB in either ear. The PTA was measured as the average hearing threshold at speech frequencies of 0.5, 1, 2, and 4 kHz. The dietary intake was examined with a food frequency questionnaire with 112 food items. The food items were classified into 25 food groups. A weighted logistic regression was used to investigate the association. Results: Individuals in the highest tertile of vegetables and nuts food groups were less likely to have hearing loss than those in the lowest tertile [Odds Ratio (OR) = 0.58 (95% Confidence interval (CI) 0.38-0.91), P = 0.019; OR = 0.59 (95% CI 0.39-0.90), P = 0.020, respectively], after adjusting for confounding variables of age, sex, body mass index, drinking, smoking, diabetes, hypertension, and physical activity. Conclusions: In this cross-sectional study, we observed that high intake of vegetables and nuts food groups revealed significant inverse associations with hearing loss, after adjusting for confounding variables among 1,312 participants.

• Journal of the Korean Society of Physical Medicine
• /
• v.16 no.2
• /
• pp.115-123
• /
• 2021

PURPOSE: This study aimed to investigate the benefits of thoracic manipulation and the trunk stability exercises on spine trunk flexibility and the pain index of chronic low back pain patients. METHODS: The study included 44 patients suffering from chronic low back pain. The participants were divided into two groups: the first group was assigned for trunk stability exercises (TSE), and the second group was randomly assigned TSE and thoracic manipulation at the same time (TSE+TM). Both groups carried out each assigned treatment thrice a week for 8 weeks. The study outcome was based on assessment of spine trunk flexibility and the pain index. Spine trunk flexibility was measured by spine flexion and extension through a range of motion and thoracic cage circumference. The pain index was measured using a visual analog scale (VAS). RESULTS: Spine flexion and extension range of motion showed a significant difference within each group and between the groups before and after the treatment. The measurement of the thoracic cage circumference also showed a notable difference within each group and between the groups before and after the treatment. There was no change in the pain index. CONCLUSION: These results indicate that thoracic manipulation with the trunk stability exercises is an efficient treatment for improving the spine trunk flexibility and soothing pain for chronic low back pain patients.

• Journal of Korea Society of Digital Industry and Information Management
• /
• v.19 no.2
• /
• pp.103-120
• /
• 2023

This study is to confirm whether SMEs can manage production facilities well and receive help in establishing new product development strategies if they actively engage in external networks. And under this influence, it is to check whether sales growth and financial performance improve. After reviewing the literature and theory, an empirical analysis using the questionnaire method was conducted to verify the research model. To verify statistical significance, programs 'SPSS 20.0' and 'Smart PLS 2.0' were used. The results of the study are summarized as follows. First, the higher the level of technical cooperation external networking of SMEs, the higher the level of management of their production facilities and new product development strategy was confirmed. Second, it was confirmed that the higher the level of production facility management and new product development strategy of SMEs, the higher their financial performance. Third, among the external networking levels of SMEs, the factor that has the greatest influence on management level of production facilities was identified as degree of participation in human network activities to secure technology. And the factor that had the greatest influence on level of new product development strategy was identified as participation in joint research and commissioned research.