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      • 자연 표현의 필법과 그 변화 연구 : 연구자의 작품을 중심으로

        이지호 조선대학교 대학원 2010 국내박사

        RANK : 247663

        ABSTRACT A Study on the Stroke of the Brush for the Expression of Nature and Its Changes LEE JI HO Advisor: Prof. JO SONG-SIG, Ph. D. Department of the Fine Arts Graduate School of Chosun University Many painters who study modern Oriental painting pursue a gradual change on the basis of the principle of the old thing-oriented creation of new things (法古創新) or attach great importance to the new conceptual meaning by borrowing the technique of Western painting or the function of media. The former depends on models for its technique of the brush, thought and subject materials, whereas the latter expresses the situations of the times by breaking away the existing viewpoints of thinking or traditional conception. Since the expression of nature was named as painting in the Orient, the changing process of painting has developed gradually. Therefore, painting has been always linked to traditions and modified its characteristics gradually, thus interacting with contemporary situations and prospecting the future from there. However, the expressive technique of the Orient which has been in line with the concept of harmony theory experiences somewhat confusion due to its mix with the ontological thought in the Occident. In other words, it is the phenomenon occurred in the process when the modern situations of painting come to face with the inherent rules of the Orient and the Occident and then contradict or assimilate with them. Therefore, the tendency of Oriental painting is classified into: The one which comprises all the traditional and modern viewpoints and then attempts to maintain balance between them; and the other which emphasizes creativity not from the aspect of tradition but from the aspect of new conception. This phenomenon seems to be derived from the combination of expressive materials or views of thinking with a variety of environmental factors. With this fact, we must perceive the necessity of being on the alert for the stagnant of the Oriental painting in the past or its cling to the phenomena of the times. In this vein, the investigator took the former's view and focused on the creation of modernity on the basis of old things in this study. In other words, by examining the meaning of traditional techniques of the brush, the investigator tried to draw out the new conception of all ages and countries. In addition, by reconsidering traditional thoughts and views of thinking from the modern aspect, the investigator pursued the change of expressive formation. This was mainly due to the investigator's formative formation, learned on the basis of tradition so far. However, it was also due to the requirement of the times which trying to change the tradition. In this vein, the investigator examined the answer by means of the two expressive formations in ancient and modern ages in general and then looked into the use technique of brush, ink stick and color. In addition, in the course of study, the investigator reconsidered the traditional expressive technique of landscape, which had been carried out customarily, and then introduced righteousness (spirit), rules (the technique of the brush), things (materials) and time (the nature of the times) into the investigator's new abstract technique of expression. Therefore, the investigator carried out an experiment based on a consistent category, namely the expression of nature, and then demonstrated its results. In the concertizing process of it, the investigator searched the answer from the model of traditional expression of landscape and then drew out diverse aspects. And based on study findings, the investigator began to change expressions and established new formative formations, namely rice paddies that depending solely on rainfall for water (天水畓) and wave patterns (波象紋). By breaking away the formation of actual or practical landscape in the past, the investigator drew out the linear formations of nature and then intensified its abstract formations in order to examine the inherent meaning of nature intensively. In particular, through the dynamics and harmony of lines, the investigator drew out musical, poetic and time-oriented meanings of nature and then tried to project the pure life of human beings who ultimately getting along with nature. Therefore, by going forward one step more from the original bearing of pursuing the technique of the brush and the change of expression, the investigator could approach a little near to the inherent attributes of nature expression, namely human beings and nature and nature and environment. In conclusion, in this study, the investigator drew out the viewpoint of traditional technique of the brush, the viewpoint of subject materials, the viewpoint of thoughts and ways of thinking and the viewpoint of nature and human beings and then brought them into the viewpoint of the times. In particular, they included internal and external meanings and phenomena, such as melodies, rhythms and dynamics simultaneously.

      • 유아 그림책에 나타난 인성교육 덕목 분석 : 인성교육진흥법을 중심으로

        이지호 韓國外國語大學校 敎育大學院 2020 국내석사

        RANK : 247647

        The purpose of this study is to examine the distribution of the eight core virtues of character education and the sub-components of each virtue in picture books for young children. The specific research questions selected for this are as follows. Research problem 1. What is the distribution of the eight core virtues of character education in picture books for young children? Research problem 2. What is the distribution of sub-components of eight core virtues of character education in picture books for young children? The subjects of this study are the top 10 books of monthly bestsellers since January 2016 among the top three children's picture books of 4 to 7 years old in the top three online bookstores in Korea according to the sales ranking record during the period from January 2016 to August 2019. Among the collected books, 91 picture books were selected for the final analysis, excluding duplicate books and books that did not contain stories. In order to analyze the distribution of character education virtues in picture books for young children, the analysis standard table of Lee Eun-jeong (2016) study was used focusing on the eight core virtues of character education, which were suggested by the Character Education Promotion Act (2015). The analysis was conducted from September 2nd to October 26th, 2019, and frequency analysis was performed by calculating frequency and percentage. The results of this study are summarized as follows. First, as a result of analyzing the distribution of the eight core virtues of personality education in the best-selling picture books of young children, 277 virtues were analyzed in the picture books of 91 children, followed by communication, consideration, respect, cooperation, responsibility, manners, filial duty, and honesty. The eight core virtues of character education are all dealt with in picture books of young children, but virtues are somewhat biased. Second, as a result of analyzing the distribution of sub-components by eight core virtues of character education in children's best-selling picture books, consideration among virtues was dealt with in picture books relatively evenly, but each sub-component of other virtues was concentrated in picture books. In conclusion, this study suggests that the virtues of character education for young children should be distributed evenly in picture books for young children in the future, focusing on the eight core virtues of character education in the Personality Education Promotion Act for the practice of proper character education in early childhood. 본 연구는 유아 그림책에 나타난 인성교육 8대 핵심 덕목과 각 덕목 별 하위 구성 요소의 분포를 알아보는 데 목적이 있다. 이를 위해 선정한 구체적인 연구 문제는 다음과 같다. 연구문제1. 유아 그림책에 나타난 인성교육 8대 핵심가치․덕목의 분포는 어떠한가? 연구문제2. 유아 그림책에 나타난 인성교육 8대 핵심가치․덕목별 하위구성요소의 분포는 어떠한가? 본 연구의 대상은 2016년 1월부터 2019년 8월까지의 기간 동안 매출 순위기록에 따른 국내 온라인 서점 상위 3곳의 4세~7세 유아 그림책 중 2016년 1월 이후 월간 베스트셀러 상위 10위 도서이다. 취합된 도서 중 중복된 도서, 이야기가 담기지 않은 도서 등을 제외하여 최종 분석 대상 그림책을 91권으로 선정하였다. 유아 그림책에 나타난 인성교육 덕목의 분포를 분석하기 위하여 인성교육진흥법(2015)에서 제시한 인성교육 8대 핵심가치․덕목인 예, 효, 정직, 책임, 배려, 소통 협력, 존중을 중심으로 이은정(2016) 연구의 분석 기준표를 사용하였다. 분석은 2019년 9월 2일부터 10월 26일까지 이루어졌으며 빈도와 백분율을 산출하여 빈도분석을 실행하였다. 본 연구의 결과를 요약하면 다음과 같다. 첫째, 유아 베스트셀러 그림책에 나타난 인성교육 8대 핵심 덕목의 분포를 분석한 결과 91권의 분석대상 유아 그림책에서는 총 277개의 덕목이 분석되었고 소통, 배려, 존중, 협동, 책임, 예, 효, 정직 순으로 덕목이 나타났다. 인성교육 8대 핵심 덕목이 유아 그림책에서 모두 다뤄지고 있으나 덕목들이 다소 편중되어 나타나고 있었다. 둘째, 유아 베스트셀러 그림책에 나타난 인성교육 8대 핵심 덕목별 하위구성요소의 분포를 분석한 결과 덕목 중 배려는 하위구성요소의 분포가 비교적 고르게 그림책에서 다루어지고 있었으나 그 외 덕목들의 각 하위구성요소는 그림책에서 편중되어 나타나고 있었다. 이러한 결과를 종합하여 본 연구는 유아기 올바른 인성교육의 실천을 위해 인성교육진흥법의 인성교육 8대 핵심 덕목을 중심으로 향후 유아인성교육의 덕목이 유아 그림책에 고르게 분포되어야 할 필요성이 있음을 시사한다.

      • Type 2 innate lymphoid cells have a significant impact on chronic atopic dermatitis by regulating skin tissue fibrosis

        이지호 울산대학교 일반대학원 2025 국내석사

        RANK : 247631

        Atopic dermatitis is a chronic dermatitis disease, 10% of children and 1-3% of adults are diagnosed. Although it develops due to various complex causes, it is known to be greatly influenced by Th1 and Th2 cells. Depending on the type of acute and chronic atopic dermatitis. The influence of Th1 and Th2 cells are different function and the type of cytokines act dominantly varies. In chronic atopic dermatitis to assisted Th1 cells and type 1 cytokines are usually known as their dominant mechanism. In acute atopic dermatitis, type 2 innate lymphoid cells(ILC2) are known to affect atopic dermatitis, and mechanisms suggest that ILC2 is stimulated by type 2 cytokines such as interleukin-25(IL-25) and Interleukin-33(IL-33), which are secreted by keratinocytes, producing interleukin-4 (IL-4) and interleukin-13 (IL-13). In addition, atopic dermatitis is obligatory accompanied by fibrosis of the dermis, so we would check whether ILC2 affects the fibrosis of the dermis. As far as it's known, fibroblasts have been increasing collagen production by Th2-derived cytokines, resulting in fibrosis. ILC2 is secrete which type 2 cytokines, is also thought to affect skin fibrosis. We used C57BL/6 mice to treat Aspergilus fumigatus for 5 days and progress to 2 days rest for 5 weeks to make chronic atopic dermatitis. and we used transepidermal water loss, skin clinical symptom score , gene expression, histological analysis, collagen assay, total serum IgE, flow cytometrys analysis. Then, to determine whether ILC2 affects atopic dermatitis, chronic atopic dermatitis has been verified using Rag1-/- mice, An experiment was conducted to verify that atopic dermatitis was alleviated in the absence of ILC2 by continuously injecting anti-CD90.2 into Intraperitoneal at intervals of 200µg every two days before treatment of the Af extract into the Rag1-/-mice. As a result, Rag1-/-mice induced chronic atopic dermaltitis models, similar result were found in transepidermal water loss, skin clinical symptom score , gene expression, histological analysis, collagen assay, total serum IgE, flow cytometrys analysis to like wild type C57BL/6 mice. key words : Chronic atopic dermartitis, helper T cells, type 2 cytokines, type 2 Innate lymphoid cells

      • 경동맥 MR 혈관조영 영상을 활용한 딥러닝 기반 뇌백질변성 예측

        이지호 이화여자대학교 대학원 2025 국내석사

        RANK : 247631

        This study proposes a deep learning-based model that predicts white matter hyperintensity (WMH) using only three-dimensional(3D) carotid Time-of-Flight (TOF) magnetic resonance angiography (MRA) images as input. WMH is a representative imaging marker of cerebral small vessel disease(cSVD) and is known to be associated with cognitive impairment, gait disturbances, and increased risk of stroke and dementia. While previous studies have primarily focused on the statistical correlations between carotid morphological features and WMH, direct prediction of WMH from carotid MRA imaging has not been explored. To address this gap, this study adopts an end-to-end deep learning approach that directly utilizes raw TOF MRA images for WMH classification. This study investigates two classification tasks: binary classification to detect the presence of WMH, and three-class classification to assess its severity. Several convolutional neural network (CNN)-based models—SFCN, ResNet10, and MedicalNet—and a Transformer-based model, MST, were trained and evaluated. Among these, the SFCN model demonstrated the best performance, achieving 81.8% accuracy and an AUC of 0.882 in binary classification, and 66.4% accuracy with an AUC of 0.847 in WMH severity classification. To interpret the model’s predictions, saliency maps and occlusion sensitivity analyses were performed. The saliency visualization revealed that the trained models commonly focused on the anatomical structures of the carotid artery, particularly around the carotid bifurcation. Occlusion sensitivity analysis further confirmed that this region played a crucial role in the prediction process. These findings suggest that vascular information contained in carotid MRA images can be meaningfully utilized for predicting WMH. This study demonstrates the feasibility of predicting and classifying WMH using carotid TOF MRA as the sole imaging modality within a deep learning framework. Furthermore, it highlights the potential of carotid imaging as a non-invasive tool for the early assessment of cerebrovascular abnormalities, establishing a practical basis for WMH prediction without relying on brain MRI. 본 연구는 뇌백질변성(white matter hyperintensity, WMH)을 예측하기 위하여 3차원 경동맥 TOF(Time-of-Flight) 자기공명 혈관조영(magnetic resonance angiography, MRA) 영상을 단독으로 활용하는 딥러닝(deep learning) 모델을 제안하는 것을 목적으로 한다. 뇌백질변성은 뇌소혈관질환(cerebral small vessel disease)의 대표적인 영상 지표로, 다양한 신경 행동 증상 및 기능적 장애와 연관되며, 뇌졸중 및 치매의 주요 원인으로 알려져 있다. 기존의 경동맥과 뇌백질변성 간의 연관성에 대한 연구들은 주로 경동맥의 형태학적 지표와 뇌백질변성 간의 통계적 상관관계 분석에만 초점을 맞추어 왔으나, 본 연구에서는 경동맥 MRA 영상을 직접 입력으로 사용하는 end-to-end 방식의 딥러닝 모델을 통해 영상 기반의 직접적인 예측 접근을 시도하였다. 뇌백질변성의 유무를 예측하는 이진 분류(binary classification)와 중증도를 예측하는 다중 클래스 분류(multi-class classification) 문제를 다루었으며, CNN(Convolutional Neural Network) 기반의 SFCN, ResNet, MedicalNet 모델과 Transformer 구조의 MST 모델을 학습하여 성능을 비교하였다. 이 중 SFCN 모델이 가장 우수한 성능을 보였으며, 병변 유무 분류에서는 정확도 81.8%, AUC 0.882를, 중증도 분류에서는 정확도 66.4%, AUC 0.847을 기록하였다. 또한, 모델의 예측 결과를 해석하기 위하여 시각적 중요도 분석(saliency map)과 폐쇄성 민감도 분석(occlusion sensitivity analysis)을 수행하였다. 시각화 결과에서 학습된 모델들이 공통적으로 경동맥의 해부학적 구조, 특히 경동맥의 분기점 부위에 주목한다는 것을 알 수 있었으며, 폐쇄성 민감도 분석에서도 해당 부위가 예측에 중요하게 작용한다는 것을 확인할 수 있었다. 이러한 결과는 경동맥 MRA 영상에 나타나는 혈관의 정보가 뇌백질변성 예측에 유의미하게 활용될 수 있음을 시사한다. 본 연구는 경동맥 TOF MRA 영상을 단독으로 활용하여 딥러닝 기반으로 뇌백질변성을 예측하고 분류할 수 있음을 실증하였으며, 나아가 경동맥 영상이 뇌혈관 이상에 대한 비침습적 조기 평가 도구로 활용될 수 있는 가능성을 제시한다.

      • 원터치 철근 커플러의 경량화 설계 및 공정 개발

        이지호 경상국립대학교 대학원 2025 국내박사

        RANK : 247631

        Rebar splicing is essential in construction sites. Traditional methods, such as lap splicing and welded splicing, have the disadvantages of being complicated to construct, taking up a lot of space, and difficult to maintain high quality. To overcome these limitations, one-touch rebar couplers have been developed and are receiving attention, but the current products are heavy and expensive, and there is room for improvement in terms of structure and process. This study aims to improve both economic efficiency and constructability by reducing the weight of one-touch rebar couplers and improving the manufacturing process. We analyzed the inefficiencies in the design and manufacturing processes of existing couplers using D25 rebars, which are widely used in the domestic construction market, and introduced various design techniques and processing methods to improve them. We applied the heat treatment process of SCM440 steel to enhance the mechanical properties of the coupler, and applied trapezoidal screws instead of existing triangular screws to improve the joining strength. In addition, we developed a new press processing method to design the housing to reduce its weight while maintaining structural stability. In addition, this study systematically evaluated the main variables of the coupler housing using the Design of Experiments (DOE) method and derived the optimal housing shape through the Response Surface Methodology (RSM). Through this, the shape and thickness of the housing were optimized to achieve weight reduction and the economic feasibility of the coupler was significantly improved. In addition, the manufacturing process of the housing and collet was simplified to increase production efficiency, and the overall manufacturing cost and time were reduced through design improvements. The coupler developed through this study has a lightweight design and high joining strength compared to existing products, enabling more efficient rebar connection work at construction sites. The results of the study provide important guidelines for the design and manufacturing of one-touch rebar couplers and suggest the possibility of expansion that can be applied to rebars of various diameters and special earthquake-resistant rebars in the future.

      • Aquacycle을 利用한 都市流域의 물循環 解析

        이지호 고려대학교 대학원 2007 국내석사

        RANK : 247631

        Water cycle analysis is important in assessing the healthiness of water cycle by quantifying various elements of water cycle including evapotranspiration, infiltration, and runoff. Only after such assessment of water cycle is made, one can devise an improvement plan to address the problems identified. In this study, water cycle analysis was performed for Gunja drainage located in metropolitan Seoul using Aquacycle model developed in Australia to assess the problems of urban water cycle. In addition, feasibility analysis of reuse scenarios such as rainwater use and wastewater reuse was performed to examine their influences on improving the water cycle. From the analysis of water cycle of Gunja drainage, it was shown that hydrologic components such as evapotranspiration and surface runoff were highly dependent upon the change of impervious area. From the simulation of urban water cycle, it was found that, of total of 1,388 rainfall, 306 was lost through evapotranspiration. Surface runoff of 1,044 occurred, of which 937 at impervious area and 107 at pervious area. Finally, 99 of rainfall was recharged into groundwater. In summary, 75% of total rainfall occurred in the form of surface runoff, and groundwater recharge only accounted for about 7%. This suggests serious distortion of water cycle which can be attributed to urbanization. When compared to the water cycle in rural region (Pyungtaek in the vicinity of Seoul), it was found that impervious area of urban region was 9 times bigger, thereby reducing evapotranspiration by 39% and increasing surface runoff by 154%, and groundwater recharge has decreased by 75%. Along with water cycle analysis, the effect of rainwater use and wastewater reuse on water cycle was also evaluated using Aquacycle model for the study area. Reusable water was confined to use with irrigation and toilet water, and the analysis showed that the amount of reusable water was 890 combining rainwater and wastewater reuse. For the reuse, rainwater storage with a capacity of 20,000 was determined as optimal capacity in case of rainwater use and the wastewater treatment plant with a capacity of 2,700 in case of wastewater reuse. With rainwater use, it was shown that imported water supply of 312 can be saved through rainwater use, and that is water supply savings of 10% and surface runoff reduction of 26%. On the other hand, with wastewater reuse, it was shown that water supply savings of 31% and wastewater reduction of 30% can be achieved. There is not much rainfall except during summer season in Korea whereas the amount of wastewater occurs steadily in large volume throughout the year. For this reason, it can be said that wastewater reuse has an advantage over rainwater use in providing consistent water supply. The groundwater store level is getting low about 11cm per a year due to the forced pumping and groundwater use. Thereby river dry steam is on going. Also the groundwater recharge evaluated with SCS-CN was shown differences 4.2% of total rainfall according to soil classes in the study area. This study summarizes the application results of Aquacycle model as a tool for water cycle assessment and feasibility analysis of various reuse alternatives. With gloomy outlook on water supply for the future, the interest in alternative water resources such as rainwater and treated wastewater has increased substantially. As a science-based approach to shaping up of reuse options and comparing alternatives, Aquacycle looks to be a promising tool that can provide analytical muscle needed in both planning and implementation stage of water recycling program.

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