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민지영,박미나,최진우,장건호,문원진 대한영상의학회 2018 Korean Journal of Radiology Vol.19 No.4
Objective: To evaluate the inter-vendor and inter-session reliability of diffusion tensor imaging (DTI) and relevant parameters. Materials and Methods: This prospective study included 10 healthy subjects (5 women and 5 men; age range, 25−33 years). Each subject was scanned twice using 3T magnetic resonance scanners from three different vendors at two different sites. A voxel-wise statistical analysis of diffusion data was performed using Tract-Based Spatial Statistics. Fractional anisotropy (FA), mean diffusivity (MD), and radial diffusivity (RD) values were calculated for each brain voxel using FMRIB’s Diffusion Toolbox. Results: A repeated measures analysis of variance revealed that there were no significant differences in FA values across the vendors or between sessions; however, there were significant differences in MD values between the vendors (p = 0.020). Although there were no significant differences in inter-session MD and inter-session/inter-vendor RD values, a significant group x factor interaction revealed differences in MD and RD values between the 1st and 2nd sessions conducted by the vendors (p = 0.004 and 0.006, respectively). Conclusion: Although FA values exhibited good inter-vendor and inter-session reliability, MD and RD values did not show consistent results. Researchers using DTI should be aware of these limitations, especially when implementing DTI in multicenter studies.
장주기 지진에 대한 철근콘크리트 건물의 비선형요구내력 스펙트럼의 제안
민지영,이복기,이강석,최윤철 국제차세대융합기술학회 2021 차세대융합기술학회논문지 Vol.5 No.6
내진설계용 스펙트럼은 건물주기 약 1초 미만의 단주기 건물 증폭형이다. 결과적으로 장주기를 가지는 고 층 건축물은 지진에 대해서 안전군이라고 인식되고 있다. 하지만 최근 장주기 지진의 발생빈도가 늘어나고 있으 며, 장주기 지진에 대한 고층 건축물의 내진설계법, 내진성능 평가법 등을 포함한 이에 대한 대책이 시급한 실정 이다. 하지만, 장주기 지진에 대한 연구는 극히 제한적으로 진행이 되고 있으며, 극소수의 연구자들에 의해서 수행 되고 있는 것이 현재의 실정이다. 본 연구에서는 고층 철근콘크리트 (이하, RC) 건물의 내진설계 및 내진성능 평 가에 기초적인 자료로서 활용하기 위한 장주기 지진에 대한 RC 건물의 비선형요구내력스펙트럼을 제안하였다. 비 선형요구내력스펙트럼은 전단파괴형 RC 건물을 상정한 Origin-Oriented 모델 및 휨파괴형 RC 건물을 상정한 Degrading Trilinear 모델을 각각 이용하여 SDOF 비선형동적해석에 의해서 제안하였다. The major characteristics of seismic design spectrum is a amplification type for buildings having short period (T) of less than approximately T=0.1. As a result, high-rise buildings with long periods have been widely recognized as safety groups against earthquakes. Recently because the frequency of long period earthquakes has been increased, recently, countermeasures for such earthquakes including the seismic design method and seismic performance evaluation method of high-rise buildings are urgently needed. However, studies on long period earthquakes are being conducted limitedly, and the current situation is that they are being conducted by very few researchers. In this study, the nonlinear required spectrum of RC buildings for long-period earthquakes was proposed to be used as basic data for seismic design and seismic performance evaluation of high-rise RC buildings. The nonlinear required spectrum was proposed by using SDOF nonlinear dynamic analysis using the Origin-Originated model assuming the shear-controlled RC building and the Degrading Trilinear model assuming the flexure-controlled RC building, respectively.
플렉서블 아이덴티티를 적용한 지자체 CI 개선 방안 - 평택시 사례를 중심으로 -
민지영,석승민 한국일러스트레이션학회 2020 일러스트레이션 포럼 Vol.21 No.63
Many modern cities are making efforts to visualize and promote the identity of the region through the City Identity (CI) with differentiated image strategies. The core of CI is to convey the city's positive image to its inmates. It seeks to differentiate itself from other cities and aims for its image in the profit dimension of the city. Failing to keep up with this trend, the Pyeongtaek CI has yet to come up with a new alternative since it was produced in 1995. Therefore, it does not reflect the current image of Pyeongtaek and its vision for the future. Application design is also very low because it is not diverse. Therefore, this study investigates and analyzes the CI status of local governments in order to solve the problems facing the brand of Pyeongtaek City, and redesigns the existing CI with a modern sense while maintaining continuity as a way to improve it. By applying the variable identity system to the application design linked to this, the fundamental method for strengthening the city brand in Pyeongtaek is emphasized. In addition, a design strategy has been set up so that the collaboration of citizens, administration, regions and experts can create a complementary synergy effect for the development of local brands. The new CI in Pyeongtaek will not merely visualize the image of the region, but will be able to establish itself as elements that can promote and commercialize city brands. 현대의 많은 도시들은 차별화된 이미지 전략으로 CI(City Identity)를 통해 그 지역의 정체성을 시각화하여 홍보하려는 노력들을 기울이고 있다. CI의 핵심은 그 도시의 긍정적인 이미지를 수용자에게 전달하는 것이다. 이는 다른 도시와의 차별화를 꾀하고 도시 그 도시의 이익차원에서의 이미지를 지향한다. 이러한 흐름에 편승하지 못한 평택시 CI는 1995년에 제작된 이래 아직 새로운 대안을 제시하지 못하고 있다. 따라서 현재 평택의 모습과 미래의 비전을 반영하지 못하고 있다. 응용디자인 또한, 다양하지 못하여 그 활용성도 매우 낮은 실정이다. 따라서 본 연구는 현재 평택시의 브랜드가 직면하고 있는 문제점들을 해결하기 위해 지자체들 CI 현황을 조사 및 분석하고, 이에 대한 개선 방안으로 기존 CI를 지속성은 유지하면서 현대적 감각으로 리디자인 한다. 이와 연계한 응용디자인을 가변적 아이덴티티 시스템을 적용하여 평택시 도시 브랜드 강화를 위한 근본적인 방법을 강조한다. 또한, 지역 브랜드 개발을 위해 시민, 행정, 지역, 전문가의 협업이 상호보완적으로 시너지 효과를 낼 수 있도록 디자인 전략을 세웠다. 평택시의 새로운 CI는 단순한 지역의 이미지를 시각화하는 것이 아닌 도시 브랜드를 홍보하고 상품화시킬 수 있는 요소들로 자리 매김 할 수 있을 것이다.
스마트폰 학습 앱을 사용한 어휘 학습이 초등학생의 영어 어휘 능력과 태도에 미치는 영향
민지영,이은주 한국외국어교육학회 2018 Foreign languages education Vol.25 No.1
With the advent of mobile technology, teaching and learning have been more effective with the help of smartphone education applications. This study investigates the effects of vocabulary learning using the smartphone education applications on Korean elementary school learners’ English vocabulary learning and attitudes. A total of fifty-seven elementary school students in the 5th grade participated in the study and were randomly divided into an experimental and a control group. The results of the study manifested that both the experimental and control group showed an increase in the comprehension and production score from pre- to post-tests. The effects of the long-term vocabulary learning, however, were not found to be statistically significant. The average score in the delayed test for both groups slightly increased, which indicated that the treatment was beneficial for learners’ long-term memory enhancement. In the affective domain, interests and confidence ratings were significant for the upper-level experimental and lower-level control group. The results of the survey questionnaire showed that the vocabulary learning using direct examples and pictures for both groups was helpful to improve learners’ lexical competence.
민지영,문효정,신화희,이용찬 한국재활복지공학회 2023 재활복지공학회논문지 Vol.17 No.4
본 논문은 손 재활 로봇에 대한 연구 동향과 발전 방향을 이해하기 위해 조사하고 요약하는 것을 목표로한다. 최근 손 재활의 수요가 증가함에 따라 손 재활 로봇에 대한 연구는 활발하게 수행되고 있다. 손 재활은 다른 부위에 비해 높은 자유도와 복잡성을 가지며, 이를 효과적으로 치료하기 위해 다양한 형태의 로봇과 손 재활 방법이 연구되고 있다. 다양한 형태의 손 재활 로봇 분석을 위해 착용 형태, 사용자 의도 파악방식, 구동 방식으로 분류하여 정리하였다. 또, 손 재활 방법의 이해를 위해 제어 알고리즘, 재활 동작, 사용자-로봇 상호작용 내용으로 분류하였다. 결과적으로 손 재활 로봇의 최고 수준과 각 시스템의 성능을 분석하고 생체 데이터의 딥러닝, 재활 시스템에 인공지능 적용 등 향후 연구 방향을 제시하고자 한다. This paper aims to investigate and summarize to understand the research trends and development directions for hand rehabilitation robots. Recently, as the demand for hand rehabilitation increases, research on hand rehabilitation robots is being actively conducted. Hand rehabilitation has a higher degree of freedom and complexity compared to other parts, and various types of robots and hand rehabilitation methods are being studied to treat this effectively. To analyze various types of hand rehabilitation robots, they were categorized and organized into wearing type, user intention identification method, and driving method. In addition, to understand the hand rehabilitation method, it was classified into control algorithm, rehabilitation movement, and user-robot interaction content. As a result, we want to analyze the state-of-the-art of hand rehabilitation robots and the performance of each system and suggest future research directions, such as deep learning of biometric data and application of artificial intelligence to rehabilitation systems.
민지영 한국문화융합학회 2023 문화와 융합 Vol.45 No.1
This study examined self-directed interdisciplinary curriculum trends in higher education by delving into the self-directed interdisciplinary curricula (SDIC) of Korean universities, compared to those of U.S. universities. Data sources included SDIC information from the individualized studies program websites and hyperlinked documents. The analysis centered on (1) whether a student should include interdisciplinary independent study and experiential learning courses and (2) whether a student was given support in curriculum design and course study. Results revealed that U.S. and Korean universities enacted SDIC under different names to make the traditional curriculum diverse and flexible. The former required students to develop course plans, including interdisciplinary independent study and experiential learning courses. The latter encouraged students to design course plans to improve their multidisciplinary expertise and skills. Both SDIC were oriented toward the shared object: to foster individuals equipped with creativity and interdisciplinary competencies to meet the needs of society and industry. U.S. universities provided diverse aids to students who planned to take the SDIC. Korean universities gradually secured professionals to help students design and complete the SDIC. Based on the results, I suggested management systems of SDIC in higher education.