특징 선택과 서포트 벡터 머신을 활용한 에너지 절도 검출

이지영,선영규,이승우,김진영,Lee, Jiyoung,Sun, Young-Ghyu,Lee, Seongwoo,Kim, Jin-Young 한국인터넷방송통신학회 2021 한국인터넷방송통신학회 논문지 Vol.21 No.5

전력 그리드 시스템이 ICT 기술의 발달로 지능화됨에 따라 그리드에 연결된 사용자의 전력 사용량 정보를 획득하고 분석할 수 있게 되었다. 본 논문에서는 스마트 그리드에서 경제적 손실을 일으키는 주된 원인인 에너지 절도 문제를 특징 선택과 서포트 벡터 머신을 이용해서 해결한다. 본 논문에서 제안하는 시스템의 데이터 전처리 과정은 다섯 단계다. 전처리 단계에서 필터링 기반 특징 선택 방법인 분산 분석 기반 방식과 상호의존정보 기반 방식을 활용해 특징을 선택한다. 시뮬레이션 결과 입력 데이터의 특징을 그대로 이용하는 것보다 상호의존정보 기반 특징 선택을 이용하면 적은 입력 특징을 이용해 서포트 벡터 머신 기반 분류기로부터 더 높은 분류 성능을 얻어 낼 수 있다.

주성분 분석을 이용한 펄스형 전자기장 자극을 통해 DNCB로 유발된 아토피성 피부염의 개선 효과 분석

이지영,김준영,이예린,김고은,이용흠,양세정,Lee, Jiyoung,Kim, Jun-Yong,Lee, Yerin,Kim, Ko Eun,Lee, Yongheum,Yang, Sejung 대한의용생체공학회 2021 의공학회지 Vol.42 No.3

Atopic dermatitis (AD), a chronic inflammatory skin disease, is characterized by itchy and age-dependent lesions. Previous studies have shown that pulsed electromagnetic field (PEMF) significantly improved chronic ulcers and ununited fractures, providing an evidence for the application of PEMF in resolving inflammation caused by AD. This study investigated the anti-inflammatory effect of PEMF on DNCB-induced AD in animal models. Five male hairless mice (6 weeks old) per group were assigned to a normal group, a sham group, and two PEMF groups (15Hz, 75Hz). Mice were treated with 2,4-Dinitrochlorobenzene (DNCB) to induce uniform AD among all groups excluding a normal group. To examine the inflammatory progress and the improvement of AD after the PEMF stimulation, images are taken with various cameras for non-invasive evaluation and the results are expressed using principal component analysis (PCA) for visualization. The results of this study demonstrated that PEMF effectively improved skin lesions without the use of drugs.

마커 제어 워터셰드와 타원 적합기법을 결합한 다중 교모세포종 분할

이지영,정다은,이현우,양세정,Lee, Jiyoung,Jeong, Daeun,Lee, Hyunwoo,Yang, Sejung 대한의용생체공학회 2021 의공학회지 Vol.42 No.4

In order to analyze cell images, accurate segmentation of each cell is indispensable. However, the reality is that accurate cell image segmentation is not easy due to various noises, dense cells, and inconsistent shape of cells. Therefore, in this paper, we propose an algorithm that combines marker-based watershed segmentation and ellipse fitting method for glioblastoma cell segmentation. In the proposed algorithm, in order to solve the over-segmentation problem of the existing watershed method, the marker-based watershed technique is primarily performed through "seeding using local minima". In addition, as a second process, the concave point search using ellipse fitting for final segmentation based on the connection line between the concave points has been performed. To evaluate the performance of the proposed algorithm, we compared three algorithms with other algorithms along with the calculation of segmentation accuracy, and we applied the algorithm to other cell image data to check the generalization and propose a solution.

현대영화 몽타주의 '파편화(fragmentation)' 경향 연구

이지영,LEE, Jiyoung 성균관대학교 트랜스미디어연구소 2017 트랜스- Vol.3 No.-

The film scholar Vincent Amiel divides into three types of montage through his book The Aesthetics of Montage ; Montage narratif, Montage discursif, and Montage decorrespondances. These three categories are the concept that encompasses the aesthetic class to which most movies belong. Early films pursued the essential and basic functions of editing, which tend to be modified in the direction of enhancing the director's goals over time. In this way, "Expressive Montage" is one of most important concepts of montage, not as a 'methodology' that combines narrative but as a 'purpose'. In the montage stage, the expressive montage work is done through three steps of decision. The process of 'combining' to combine the selected films in a certain order, after the process of 'selection' which selects only necessary parts of the rush film, and 'connection' to determine the scene connection considering the duration of the shot. The connection is the final stage of the montage. There are exceptions, of course. When fiction films of classical narratives use close-ups, or when using models or objects of neutered animals, the film induces the tendency of a "montage decorrespondances" rather than a "montage narratif" or "montage discursif". This study attempts to analyze the tendency of montage of works with 'uncertain connection' through 'collage' used by close-ups and montage decorrespondances as 'fragmentation tendency of modern films'. The fragmentation of the montage in contemporary film breaks the continuous and structural nature of the film, and confuses the narration structure that is visible on the surface of the film. The tendency of the fragmentation of the montage, which started from this close-up, seems to give an answer to the extensibility of the modern image.

데이터마이닝과 학습기법을 이용한 부동산가격지수 예측

이지영,유재필,Lee, Jiyoung,Ryu, Jae Pil 한국융합학회 2021 한국융합학회논문지 Vol.12 No.8

With increasing interest in the 4th industrial revolution, data-driven scientific methodologies have developed. However, there are limitations of data collection in the real estate field of research. In addition, as the public becomes more knowledgeable about the real estate market, the qualitative sentiment comes to play a bigger role in the real estate market. Therefore, we propose a method to collect quantitative data that reflects sentiment using text mining and k-means algorithms, rather than the existing source data, and to predict the direction of housing index through artificial neural network learning based on the collected data. Data from 2012 to 2019 is set as the training period and 2020 as the prediction period. It is expected that this study will contribute to the utilization of scientific methods such as artificial neural networks rather than the use of the classical methodology for real estate market participants in their decision making process.

피사계 심도가 서로 다른 영상을 이용한 All-in-focus 영상 생성 알고리즘

이지영(Jiyoung Lee),이세나(Sena Lee),이현우(Hyunwoo Lee),이중빈(Jungbin Lee),장승현(Seunghyun Jang),김태한(Taehan Kim),김기현(Kihean Kim),양세정(Sejung Yang) 대한전자공학회 2020 대한전자공학회 학술대회 Vol.2020 No.8

어머니, 아버지 공동양육 및 가족상호작용이 유아 학습준비도에 미치는 영향

이지영 ( Lee Jiyoung ) 열린부모교육학회 2025 열린부모교육연구 Vol.17 No.2

This study aimed to examine the effects of mothers’ and fathers’ coparenting and family interaction on young children's school readiness. For this purpose, data from the 7th wave (2014) of the Korean Children Panel conducted by the Korea Institute of Child Care and Education were analyzed. A total of 1,066 parents with children averaging 71 months of age participated in the study. Correlation analysis and multiple regression analysis were performed. The results revealed the following: First, both mothers’ and fathers’ coparenting and family interaction showed significant correlations with children’s overall school readiness and its subdomains. Second, in predicting children’s school readiness, mothers’ coparenting and fathers’ family cohesion emerged as key predictors, indicating differing influences by parent. Third, in the analysis of relative influence, mothers’ coparenting significantly predicted overall school readiness, social-emotional development, and learning attitudes, while mothers’ family cohesion and fathers’ coparenting conflict were identified as significant predictors of cognitive development and knowledge. These findings suggest the need for differentiated intervention programs that consider the distinct influences of mothers and fathers, and provide practical implications for enhancing coparenting and family interaction to support children’s school readiness.

들뢰즈의 <시네마 2>의 구조에 대한 연구

이지영(Lee, Jiyoung) 서울대학교 철학사상연구소 2014 철학사상 Vol.51 No.-

Deleuze’s two volumes on films, Cinema, are known as Bergsonian philosophical application into films, which develop discussions on cinematic being and the ontology on time. This study wants aims to problematize this broadly accepted perception of Deleuze Cinema books. Because problems we face when we try to interpret Cinema books based solely on Bergsonian philosophy. Firstly, Deleuze’s discussions on Cinema are not a simple application or explanation of films. If we consider his works on cinema based solely on Begsonian philosophy, then we might miss the meaning and relations of concepts in Cinema books. Secondly, is the Begsonian influence in Cinema books so absolute that we identify his influence in the Table of Contents of Cinema? If so, we should ask the reason why Begson disappears in the last parts of Time-Image and Nietzsche appears mainly in those parts. This study therefore begins with these questions and examines the concept of ‘the power of the force’ in order to reveal the theoretical tension between Bergson and Nietzsche. In so doing, rereading the structure of Cinema 2 can also show the possibilities of Deleuze’s works, that can be open toward ‘futurity’ and connected with new kinds of objects that surround contemporary cinema.

차세대영재기업인 대학생의 다중지능 특성과 진로상담 요구

이지영(Jiyoung Lee),태진미(Jinmi Tae),박소연(Soyeon Park),김하연(Hayeon Kim) 한국영재학회 2026 영재교육연구 Vol.36 No.2

본 연구는 차세대영재기업인 대학생의 다중지능 특성을 분석하고, 심층 진로상담 과정에서 나타나는 진로상담 요구를 탐색하는 데 목적이 있다. 연구대상은 KAIST IP 영재기업인교육원 및 POSTECH 영재기업인교육원 수료생 중 AI 기반 다중지능검사(AI-MIT)를 통해 표준화된 다중지능프로파일을 산출하고, 이를 바탕으로 개별 심층상담에 참여한 대학생 56명이다. 본 연구는 설명적 순차 혼합연구(explanatory sequential mixed-methods design)로 설계되어 양적․질적연구를 수행하였고, 다중지능 특성 분석과 상담자료에 대한 다중사례 질적분석을 실시하였다. 연구결과, 차세대 영재기업인 대학생은 언어지능, 논리수학지능, 자기성찰지능에서 높은 강점을 보인 반면, 사회정서적 관계와 신체적 균형 측면에서는 상대적으로 취약한 양상이 나타났다. 또한 높은 성취지향성과 자기주도성을 보이면서도 진로 불확실성, 관계적 부담, 자기이해의 어려움을 경험하는 것으로 나타났다. 이에 따라 주요 진로상담 요구는 자기이해 기반 진로설계 지원, 사회정서적 역량 강화, 협업 및 관계 역량 지원, 지속가능한 진로개발 지원으로 범주화되었다. 본 연구는 차세대영재기업인 대학생의 다중지능 특성과 진로상담 요구를 통합적으로 분석함으로써, 영재 대학생의 전환기 진로지원 방향과 사회정서적 지원의 필요성을 제시하였다는 점에서 의의가 있다. This study aims to identify the multiple intelligence (MI) characteristics of next-generation gifted entrepreneur university students and to qualitatively explore their practical career counseling needs. Employing an explanatory sequential mixed-methods design, the study involved 56 undergraduate students who completed programs at the KAIST IP Gifted Entrepreneur Education Center or the POSTECH Gifted Entrepreneur Education Center. Participants first completed the AI-Based Multiple Intelligence Test (AI-MIT) to generate standardized profiles, the results of which subsequently informed the qualitative multi-case study of their in-depth career counseling. The quantitative findings revealed that the participants demonstrated significant strengths in linguistic, logical-mathematical, and intrapersonal intelligences. However, an internal imbalance within intrapersonal intelligence was observed, characterized by high self-design but relatively low self-understanding competencies. Furthermore, physical and naturalistic intelligences emerged as relative vulnerabilities when compared to their exceptional cognitive strengths. Qualitatively, despite their high achievement orientation and self-directedness, the students experienced pervasive career uncertainty, relational challenges in collaborative settings, and physical burnout. Accordingly, their career counseling needs were categorized into four distinct domains: support for self-understanding-based career design, enhancement of socio-emotional relational competencies, support for collaborative skills, and sustainable career development. This study highlights the critical necessity of providing integrated socio-emotional interventions and transitional career support tailored to the unique developmental and psychological characteristics of gifted entrepreneur university students.

동화를 활용한 공간 구성과 콘텐츠 개발 방향

이지영(Lee Jiyoung) 한국아동청소년문학학회 2016 아동청소년문학연구 Vol.- No.19

The purpose of this study is to suggest the directions for space construction and content development utilizing fairy tales. I analyze spatial storytelling of the fairy tales village in Songwoldong. The concept of this village and spatial organization are derived from world classic fairy tales. Its place identity began from fairy tales and tourists travel there to enjoy the fairy tales of this area. I suggest directions for spatial storytelling that make full use of the fairy tales through : 1) the creation of character branding of the place 2) the publication of storybooks reflecting Songwoldong contents 3) finding the space to represent the alley 4) retaining the space and considering how to communicate it with a story, and 5) the construction of space and contents that utilize Korean fairy tales. This study is expected to be the foundation of a storytelling project to construct space and develop its contents by utilizing fairy tales.