경기도 내 유통 견과종실류의 잔류농약 실태 모니터링

이유나,문수경,이정희,김애란,문경은,강충원,이진희,박명기 한국식품위생안전성학회 2023 한국식품위생안전성학회지 Vol.38 No.3

This study was aimed to investigate pesticides residue levels in nuts and seeds distributed in Gyeonggido. We investigated nuts and seeds in 131 products, which is pumpkin seeds (n=17), sunflower (n=12), sesame (n=23), perilla (n=11), peanut (n=18), almond (n=8), chestnut (n=6), walnut (n=14), pine nut (n=3), pecan (n=4), macadamia (n=3), brazil nut (n=5), cashew nut (n=4) and ginkgo nut (n=3). As a result of evaluating 339 pesticide residues, eight out of 131 samples were detected at the range of 0.01–0.07 mg/kg. Additionally, 7 out of 8 detected samples exceeded MRLs (Maximum Residue Limits) and 85% of them were imported. Pyraclostrobin applied on the positive list system (PLS) was detected in five Chinese pumpkin seeds samples, and the range was 0.02–0.04 mg/kg. In Indian and Korean sesame seeds, pendimethalin, boscalid, and bifenthrin were detected at 0.04, 0.05, and 0.06 mg/kg, respectively. The ratio of estimated daily intake (EDI) to acceptable daily intake (ADI) was 0.002–0.372%, indicating that the risk level was safe.

글로벌 맞춤형 화장품 산업 현황 분석 및 발전방안 연구

이유나 한국질서경제학회 2022 질서경제저널 Vol.25 No.2

Nowadays, customized cosmetics industry is rising as an industry highly equipped with social and economic utility not just in Korea but all over the world. Therefore, this study will examine the growth background of global customized cosmetics industry and analyze and consider the market conditions and systems in order to investigate the current status of the markets in customized cosmetics industry and devise development plans for it. According to the results of examining the market conditions and regulations and systems of global customized cosmetics industry, Korea is the only country in the world which has legalized customized cosmetics and has implemented the system about those producing and managing customized cosmetics to foster professional manpower. However, the policies and systems need to be improved now. This study has analyzed and considered the current status of the industry based on reviewing studies and government reports on customized cosmetics. Grounded on the findings, this researcher suggests development plans as follows. First, it is necessary to develop programs to experience customized cosmetics in order to satisfy the needs of consumers according to their hyper-personalized patterns. Second, the systems and policies should be complemented to popularize and generalize customized cosmetics further. Third, it is needed for the government to increase its political support for small and medium-sized enterprises and individual entrepreneurs engaged in the customized cosmetics market. At this point that the size of the customized cosmetics market is growing in line with the development of global cosmetics industry, more systematic approaches and supportive policies are required so that Korea can be equipped with the aspects to be one of the power nations for global customized cosmetics. 본 연구는 맞춤형 화장품이 우리나라뿐만 아니라 전 세계적으로 사회적, 경제적 효용가치가 높은 산업으로 부상하고 있는 시점에서 글로벌 맞춤형 화장품의 산업의 성장배경을 살펴보고 시장현황 및 제도를 분석, 고찰함으로써 이를 통해 맞춤형 화장품산업의 시장현황과 발전방안을 모색하는 데 목적이 있다. 글로벌 맞춤형 화장품산업 시장 현황 및 규정 및 제도를 살펴본 결과, 우리나라는 세계에서 유일하게 맞춤형 화장품에 대한 법제화가 마련된 국가로 맞춤형 화장품 조제관리사 제도를 시행하여 전문 인력을 육성하고 있으나 이에 대한 정책과 제도 개선이 필요한 시기이다. 본 연구에서는 맞춤형 화장품에 대한 선행연구 및 정부 보고서를 바탕으로 산업 현황을 분석하고 고찰하였다. 본 연구의 결과로 다음과 같은 발전방안을 제안하였다. 첫째, 초개인화된 소비자들의 패턴에 따라 소비자의 니즈를 만족시킬 수 있는 맞춤형 화장품 체험 프로그램의 개발, 둘째, 맞춤형 화장품의 대중화와 보편화를 위한 제도 및 정책의 보완, 셋째, 맞춤형 화장품 시장에 종사하는 중소기업 및 개인사업자에 대한 정부의 정책적 지원 강화이다. 글로벌 화장품산업에 발맞춰 맞춤형 화장품 시장의 규모가 커지고 있는 이 시점에서 우리나라가 글로벌 맞춤형 화장품의 강대국으로서 면모를 갖추기 위해서는 좀 더 체계적인 접근과 지원정책이 필요하다.

초등학교 1학년 학생들의 수학 이야기 쓰기 활동 분석

이유나,고정화 한국학교수학회 2015 韓國學校數學會論文集 Vol.18 No.1

수학적 의사소통의 가치와 중요성이 인식되면서 수학교육에서 수학적 의사소통이 점점 강화되었다. 구어적 의사소통뿐만 아니라 문어적 의사소통 중 표현하기 방식인 쓰기 활동 역시 강조되고 있다. 한편, 2009 개정 수학과 교육과정에서는 수학적 개념을 자연스럽고 쉽게 학습하도록 스토리텔링 방법을 적용하고 있기 때문에, 초등학교 1학년 학생들이 이야기에 친숙하다는 점에 주목하였다. 이에 본 연구에서는 초등학교 1학년 학생들을 대상으로 이야기 쓰기에 초점을 맞추어 쓰기 활동 수준을 분석하고 이야기 쓰기 활동을 어떻게 인식하는지 살펴보고 시사점을 얻고자 하였다.

북 큐레이션을 적용한 대형서점의 매개공간에 관한 연구

이유나,윤갑근 한국디자인트렌드학회 2020 한국디자인포럼 Vol.25 No.3

Background Due to cultural development, large bookstores are becoming complex cultural spaces. So, the company wanted to communicate with consumers more by substituting space with various purposes. Various values were developed by applying a book curation space that suggested the lifestyle of consumers to a medium that could change from the space of a large bookstore. Through this study, it was intended to be used as a basic data on the entrance plan with the distinction of presenting specific spatial orientation. Methods Through the theoretical study, the characteristics and the direction of spatial composition were explored and based on this, the types and spatial characteristics were extracted through prior research. Specific spatial composition direction was outlined through case analysis. Result There were four types of space, and the characteristics based on the two aspects of the medium space were shown in six characteristics. Through case analysis, the company sought to improve the culture of consumers in various ways and to take a deep approach to their daily lives. Conclusion In space, product sales space and associated action space are considered in terms of programmatically, providing consumers with opportunities for cultural experience and improving culture. In terms of space, area, openness, and accessibility were taken into account to further expand the space from small unit spaces to increase the frequency of North curation contacts.

Feasibility study on high current ion beam extraction from anode spot plasma for large area ion implantation

이유나,정경재,황용석 한국물리학회 2015 Current Applied Physics Vol.15 No.12

In this paper, we have investigated the feasibility of the high current beam extraction from anode spot plasma as an ion source for large area ion implantation. Experiments have been carried out with the ambient plasma produced by inductive coupling with radio-frequency (RF) power of 200 W at the frequency of 13.56 MHz. Anode spot plasmas are generated near the extraction hole of 2 mm in diameter at the center of a bias electrode whose area exposed to the ambient plasma can be changed. It is found that the maximum ion beam current is extracted at the optimum operating pressure at which the area of bias electrode exposed to ambient plasma is fully covered with the anode spot plasma whose size is dominantly determined by the operating pressure for given gas species. It is also observed that the extracted ion beam current increases nonlinearly with the bias power due to the changes in size and shape of the anode spot plasma. With the well-established anode spot plasma operating at the optimum gas pressure, we have successfully extracted high current ion beam of 6.4 mA (204 mA/cm2) at the bias power of 22 W (~10% of RF power), which is 43 times larger than that extracted from the plasma without anode spot. Based on the experimental results, criteria for electrode design and operating pressure for ion beam extraction from larger extraction aperture are suggested. In addition, the stability of anode spot plasma in the presence of ion beam extraction through an extraction hole is discussed in terms of the particle balance model. In this paper, we have investigated the feasibility of the high current beam extraction from anode spot plasma as an ion source for large area ion implantation. Experiments have been carried out with the ambient plasma produced by inductive coupling with radio-frequency (RF) power of 200 W at the frequency of 13.56 MHz. Anode spot plasmas are generated near the extraction hole of 2 mm in diameter at the center of a bias electrode whose area exposed to the ambient plasma can be changed. It is found that the maximum ion beam current is extracted at the optimum operating pressure at which the area of bias electrode exposed to ambient plasma is fully covered with the anode spot plasma whose size is dominantly determined by the operating pressure for given gas species. It is also observed that the extracted ion beam current increases nonlinearly with the bias power due to the changes in size and shape of the anode spot plasma. With the well-established anode spot plasma operating at the optimum gas pressure, we have successfully extracted high current ion beam of 6.4 mA (204 mA/cm2) at the bias power of 22 W (~10% of RF power), which is 43 times larger than that extracted from the plasma without anode spot. Based on the experimental results, criteria for electrode design and operating pressure for ion beam extraction from larger extraction aperture are suggested. In addition, the stability of anode spot plasma in the presence of ion beam extraction through an extraction hole is discussed in terms of the particle balance model

견내량수도 안전조치에 대한 고찰

이유나 한국항해항만학회 2022 한국항해항만학회 학술대회논문집 Vol.2022 No.2

마산지방해양수산청 관내 좁은 수로인 ‘견내량수도’에서 지속적인 선박사고가 발생함에 따라 보다 직접적이고 이용자들이 사고를 예방할 수 있는 단계별 안전조치 사항 및 과정을 소개하고 업무를 진행하면서 담당자로서 고찰한 내용을 정리하였다.

하루

이유나 문예운동사 2016 문예운동 Vol.- No.130

가정용 믹서류를 이용하여 제조한 설기떡의 품질특성

이유나,이종현,김영순,Lee, Yu-Na,Lee, Jong-Hyun,Kim, Young-Soon 한국식품영양학회 2012 韓國食品營養學會誌 Vol.25 No.4

Sulgidduk is a kind of basic steamed rice cake in Korea. Multifunctional portable grinder was used for making sulgidduk and investigated the characteristic changes of rice powder for deciding the proper particle size of rice powder. Operation times for grinding the water absorbed swelled rice were 10, 20, 30 and 40 seconds. Moisture contents of rice powder and sulgidduk showed an increasing tendency with an increase of operation times for grinding. Springiness showed significant differences according to the operation times. Cohesiveness was decreased severely after 40 seconds grinding. Chewiness showed high after 20 seconds grinding in all groups; however, decreased after 40 seconds grinding and showed similar chewiness of the control group. Fracturability also showed severe increased tendency after 20 seconds grinding and decreased after 30 seconds grinding. Strength and hardness showed significant differences; they were increased until 30 seconds and severely decreased after 40 seconds grinding. L values showed significant differences in all the groups ($p{\leq}0.05$). The a and b values did not show any differences in all groups. Overall sensory evaluations, such as colors, flavors and texture, were increased with operation times for grinding and showed significant differences among the groups (p<0.05). As a result of this study, 40 seconds grinding times were the best condition for making sulgidduk, using by multifunctional grinder.

가상현실 기반의 다면케이브 시스템을 활용한 인테리어디자인 프로세스 개선 - 기본설계 및 실시설계를 중심으로 -

이유나,최돈출,최길동 한국전시산업융합연구원 2023 한국과학예술융합학회 Vol.41 No.4

This study began with the use of virtual reality due to the development of the fourth industry and the need to improve the design process in the field of interior design. The purpose of this study is to present more reasonable and innovative design evaluation, decision, and management methods. Therefore, this paper implemented FGI to improve interior design processes and expertise in building and interior design processing for practical design processes and expertise in the interior design process. Research results and information is as follows. First, compared to the existing 2D method, the proposed 3D method improved user understanding, efficient opinion coordination, and evaluation method were generally positively evaluated. Second, most evaluated that the synesthetic effect of the 1:1 scale in relation to the use and fusion of the Multi-Faceted Cave system and the metaverse space was more efficient as a verification and evaluation method in the design result evaluation, decision, and management process. Third, the possibility of using it in various perspectives and fields was confirmed with the suggestions of practitioners and experts. Based on these results, the interior design process could be improved by utilizing a Multi-Faceted Cave system based on virtual reality. The results of such a study can help users without expertise understand the space and can be an efficient evaluation method of basic design and implementation design with synesthetic experiences. In addition, it is expected that productivity can be improved in connection with the construction design stage. In this regard, continuous research is needed in various fields based on the convergence of the Multi-Faceted Cave system and the metaverse space.

‘교육공동체’에 대한 최근 연구동향에 대한 비판적 고찰 - 언어 네트워크 분석방법을 활용하여

이유나,JINCHUNHUA,이상수 교육종합연구원 2016 교육종합연구 Vol.14 No.2

The purpose of this study was to explore the future direction of research for the educational community by a critically review of recent research for 15 years related to the educational community through semantic network analysis. Main results were as follows. First, it claimed a total of 44 high frequency in studies related to the educational community for 15 years, the main word was mentioned ‘teacher', ‘community', ‘participation', ‘relationship between members' ‘caring ', ‘trust ', ‘collaboration ', ‘the teacher association’, etc. Second, the frequency of the word 'autonomy' is low but could show a significantly higher impact to identify the school as a community approach. Third, a educational community, a teacher, and a school community focused on consisting of key words were derived in cluster network analysis of educational community. It shows that not deviate from concepts or features, or components of the educational community have said in previous studies abroad. Also, it emphasized the role of the teacher becomes more prominent than the other members, or sometimes it limited to one theory, the research was done mainly to see education practice in Korea. Fourth, this study separated and analysed articles published in the former period(2001-2007) and the post period(2008-2015). Through the analysis, understanding the community as a way of overcoming conflict studies education consisted mainly of interest in voluntary participation of teachers in the former period but as well teacher as members of the community, and research focused on the relationship between the members through a sense of community, commitment and collaboration based on the shared vision and goals are identified as the main accomplished in the post period. According to the results of this study, previous studies of the educational community can have access to have occurred mainly applied to Korea around the theory of foreign studies, for innovation to education through a community approach It suggests that require a substantial theoretical and practical research, its practical strategy of South Korean education community, and focus on competencies development according to the Korean community education appropriate to the situation and context in South Korea.