대학생의 학습공간 선택에 영향을 미치는 요인에 관한 연구: 대학도서관의 효과적인 공간 구성을 위한 제언

이나리,박지홍,Lee, Nari,Park, Ji-Hong 한국정보관리학회 2022 정보관리학회지 Vol.39 No.2

The purpose of this study is to investigate the effect of learning space Servicescape on the user satisfaction level and continuance intention and to identify moderating effect of the learning activity. The six Servicescape factors are selected after literature review and in-depth interviews; cleanliness, comfort, convenience, aesthetics, accessibility, and flexibility. The online survey is given to the university students at four-year private universities in Seoul metropolitan area. The result shows that among the learning space Servicescape factors, cleanliness, comfort, convenience, and accessibility have a significant impact on the user's satisfaction and the user's satisfaction response determines the continuance intention to the learning space. It is also found that the factors of cleanliness and comfort have a negative moderating effect on user satisfaction. This study implies that the result provides methods to develop the space arrangement for university libraries that provide the better-support to students' learning experience.

Sol-gel법을 이용한 백색도가 높은 가시광 응답형 N-doped TiO₂ 제조 및 특성 평가 연구

이나리,유리,김태관,피재환,김유진,Lee, NaRi,Yu, Ri,Kim, Tae Kwan,Pee, Jae-Hwan,Kim, YooJin 한국분말야금학회 2017 한국분말재료학회지 (KPMI) Vol.24 No.6

Nitrogen-doped titanium dioxide (N-doped $TiO_2$) is attracting continuously increasing attention as a material for environmental photocatalysis. The N-atoms can occupy both interstitial and substitutional positions in the solid, with some evidence of a preference for interstitial sites. In this study, N-doped $TiO_2$ is prepared by the sol-gel method using $NH_4OH$ and $NH_4Cl$ as N ion doping agents, and the physical and photocatalytic properties with changes in the synthesis temperature and amount of agent are analyzed. The photocatalytic activities of the N-doped $TiO_2$ samples are evaluated based on the decomposition of methylene blue (MB) under visible-light irradiation. The addition of 5 wt% $NH_4Cl$ produces the best physical properties. As per the UV-vis analysis results, the N-doped $TiO_2$ exhibits a higher visible-light activity than the undoped $TiO_2$. The wavelength of the N-doped $TiO_2$ shifts to the visible-light region up to 412 nm. In addition, this sample shows MB removal of approximately 81%, with the whiteness increasing to +97 when the synthesis temperature is $600^{\circ}C$. The coloration and phase structure of the N-doped $TiO_2$ are characterized in detail using UV-vis, CIE Lab color parameter measurements, and powder X-ray diffraction (XRD).

실리카 코팅과 에칭에 의한 α-FeOOH의 색상변화 연구

이나리,유리,김유진,Lee, NaRi,Yu, Ri,Kim, YooJin 한국분말야금학회 2018 한국분말재료학회지 (KPMI) Vol.25 No.5

Silica is used in shell materials to minimize oxidation and aggregation of nanoparticles. Particularly, porous silica has gained attention because of its performance in adsorption, catalysis, and medical applications. In this study, to investigate the effect of the density of the silica coating layer on the color of the pigment, we arbitrarily change the structure of a silica layer using an etchant. We use NaOH or $NH_4OH$ to etch the silica coating layer. First, we synthesize ${\alpha}-FeOOH$ for a length of 400 nm and coat it with TEOS to fabricate particles with a 50 nm coating layer. The coating thickness is then adjusted to 30-40 nm by etching the silica layer for 5 h. Four different shapes of ${\alpha}-FeOOH$ with different colors are measured using UV-vis light. From the color changes of the four different shapes of ${\alpha}-FeOOH$ features during coating or etching, the $L^*$ value is observed to increase and brighten the overall color, and the $b^*$ value increases to impart a clear yellow color to the pigment. The brightest yellow color was that coated with silica; if the sample is etched with NaOH or $NH_4OH$, the $b^*$ value can be controlled to study the yellow colors.

판형 열교환기의 전열판 개수에 따른 유량 분배 특성에 대한 수치해석

이나리(Nari Lee),정재혁(Jae Hyuk Jung),허남건(Nahmkeon Hur) 한국전산유체공학회 2009 한국전산유체공학회 학술대회논문집 Vol.2009 No.11

In the present study, the characteristic of flow distribution in the channel of a plate heat exchanger is investigated numerically. In order to accomplish the efficient and fast analyses of the flow characteristics in the channel, a semi-microscopic analysis has been performed using a porous media model. For semi-microscopic analysis using porous media, the flow resistance coefficients are obtained through the result of pressure drop in the experimental data. The results showed that the variation of mass flow rate, geometry and chevron angle strongly depend on the flow distribution in the channel. Particularly, the chevron angle is most important factor for uniform flow distribution.

3D Printing and Its Implication to Patent Law

Lee, Nari(이나리) 한국정보법학회 2014 정보법학 Vol.18 No.2

3D printing and cloud computing are good examples to explore technological changes and patent law. Some commentators and 3D enthusiasts argue that 3D printing is one of the new general purpose technologies that would be pervasive in terms of its applicability, improve and lower costs over time and would incite new inventive potential. Both of these technologies are further instances of computer programming technology, where industry is currently defining its own field, and where the copying of the expression merge with the exploitation of ideas. If technologies need to prosper without hindrance of the law, policy makers should carefully consider how the exclusive right of patent may apply to these new technologies. This paper explores to what extent and manner should the future patent norm take the principle of neutrality of protection into consideration, considering these new emerging technologies and explore if these technologies merit exceptional treatments to preserve a freedom to tinker.

교육복지우선지원사업 참여 여부에 따른 저소득층 학생의 인지적, 사회･정서적 발달 추이 탐색

이나리(Lee, Nari),구남욱(Koo, Namwook) 학습자중심교과교육학회 2017 학습자중심교과교육연구 Vol.17 No.13

본 연구는 2012~2015년에 조사된 경기교육종단연구(GEPS) 1~4차년도 자료를 활용하여 초등학교 4학년부터 중학교 1학년까지의 교육복지우선지원사업 참여 여부에 따른 저소득층 학생의 인지적, 사회 정서적 발달의 추이를 탐색하였다. 저소득층 학생의 교육복지우선지원사업 참여 집단과 미참여 집단의 자기효능감, 정신건강, 학교 적응, 그리고 국어, 수학, 영어의 학업성취도가 시간의 경과에 따라 차이가 있는지 검정하기 위하여 다집단 잠재성장모형을 통해 분석을 실시하였다. 분석 결과, 교육 복지우선지원사업 참여 여부에 따른 저소득층 학생의 인지적, 사회 정서적 발달 추이는 차이가 없는 것으로 나타났다. 즉, 국어, 수학, 영어 교과의 학업성취 변화 추이와 자기효능감, 정신건강, 학교적응의 변화 추이에서 참여 집단과 미참여 집단 간에 통계적으로 유의한 차이가 나타나지 않았다. 결과적으로 교육복지우선지원사업 참여 여부와 상관없이 저소득층 학생들의 학교적응과 국어, 수학 학업성취도는 학년이 올라감에 따라 점차 향상하였고, 반면 자기효능감과 영어 학업성취도는 중학교에 입학하면서 급격하게 하락하였다. 본 연구에서는 이러한 결과를 토대로 교육복지우선 지원사업의 효과를 높이기 위한 방안을 제안하였다. This study investigated the cognitive, social and emotional development of the low-income students from the 4th to the 7th grade in terms of participating in Education Welfare Priority Support Project (EWPSP). This study used a multiple group latent growth model to test the longitudinal effects of EWPSP on self-efficacy, mental health, school adaptation, and academic achievement in Korean, mathematics and English. The results show that self-efficacy and English achievement decreased sharply when students entered a middle school, whereas Korean and mathematics achievement and school adaptation increased as the student’s grade goes up regardless of participation or non-participation group in EWPSP. However, there is no difference between the participation and non-participation groups in cognitive, social and emotional development. That is, there is no statistically significant difference between the participation and non-participation groups in the trends of Korean, mathematics, and English achievement, and trends of self-efficacy, mental health and school adaptation. Plans and suggestions are discussed to enhance the effectiveness of EWPSP based on the results of this study.

양자내성암호 국가공모전

이나리(Nari Lee),정경철(Kyung Chul Jeong),지성택(Seongtaek Chee),한대완(Daewan Han) 한국정보보호학회 2023 情報保護學會誌 Vol.33 No.3

미생물의 쿼럼센싱과 식품안전

이나리(Nari Lee) 한국식품과학회 2013 식품과학과 산업 Vol.46 No.2

Chevron 유로 내의 미시적 해석 결과를 통한 대형 판형열교환기 특성에 대한 준미시적 해석

이나리(Nari Lee),이명성(Myungsung Lee),이상혁(Sang Hyuk Lee),허남건(Nahmkeon Hur) 대한설비공학회 2009 대한설비공학회 학술발표대회논문집 Vol.2009 No.-

In the present study, the flow and heat transfer characteristics of a large plate heat exchanger are investigated numerically. The flow passages are very complicated due to the grooved corrugation patterns of the plate surface so that the detailed mesh and the large amount of the computation time have to be required in the numerical simulation for the conjugate heat transfer analysis. In order to accomplish the efficient and fast analysis of the heat transfer characteristics in the plate heat exchanger, a semimicroscopic method using the porous media model has been investigated numerically. The results showed that the characteristics of the heat transfer and pressure drop, which are respectively presented with Colburn j-factor and Fanning f-factor, are in a good agreement between the detailed mesh and the porous media model. The results of the present study could be applicable to the numerical analysis of entire flow passages in the large plate heat exchanger using porous media treatment.

비교과 활동 참여 정도가 중학생의 인지적, 사회ㆍ정서적 발달에 미치는 종단적 영향력 탐색

이나리(Nari Lee),구남욱(Namwook Koo) 한국교육평가학회 2018 교육평가연구 Vol.31 No.1

본 연구는 서울시의 중학생들을 대상으로 하여 중학교 3년간의 사회ㆍ정서적 및 인지적 성장을 살펴보고, 시간의 경과에 따라 사회․정서적 변인이 인지적 변인에 미치는 영향력을 분석하였다. 잠재성장모형을 사용하여 분석한 결과, 중학교 3년 동안 사회ㆍ정서적 변인인 비교과 활동 참여 정도, 교우관계, 자아존중감에서는 시간의 경과에 따른 통계적으로 유의한 성장이 나타나지 않았으며, 국어, 수학, 영어 학업성취도에서는 통계적으로 유의하게 정적인 성장을 확인할 수 있었다. 본 연구에서는 비교과 활동 참여 정도가 두 개의 매개변인인 교우관계와 자아존중감을 통해서 국어, 수학, 영어 교과의 학업성장에 미치는 영향력을 다중매개효과 분석을 통해서 살펴보았다. 그 결과, 비교과 활동 참여 정도는 교우관계 및 자아존중감을 통해서 시간의 경과에 따른 학업성취도의 성장에 부적인 영향을 미치는 것을 확인하였다. 따라서 본 연구의 결과는 중학생들의 사회ㆍ정서적 성장을 위한 교육과정이 필요하며, 사회ㆍ정서적 발달이 인지적 발달을 촉진할 수 있는 교육정책의 변화가 필요함을 시사한다. This study explored the social and emotional growth and cognitive growth of middle school students in Seoul, South Korea over time and analyzed the effects of social and emotional variables on cognitive variables. The results of latent growth modeling showed that there was no statistically significant change in the degree of participation in non-subject activities, peer relation, and self-esteem, whereas there was statistically significant growth in Korean, mathematics, and English achievement. Also, this study investigated that the degree of participation in non-subject activities affected the growth of Korean, mathematics, and English achievement through peer relation and self-esteem using multiple mediation analyses. It was found that the degree of participation in non-subject activities had negative effects on academic achievement through peer relation and self-esteem. The results of this study suggest new curriculum should be developed to promote social and emotional growth of middle school students, and also new educational policy should be implemented so that students social and emotional growth can positively influence their academic achievement.