(Pb_0.72La_0.28)Ti_0.94O₃ Buffer를 사용한 Pb(Zr_0.52Ti_0.48)O₃ 박막의 수소 후열처리 효과

이은선,이동화,정현우,임성훈,이상렬,Lee, Eun-Sun,Li, Dong-Hua,Chung, Hyun-Woo,Lim, Sung-Hoon,Lee, Sang-Yeol 한국전기전자재료학회 2005 전기전자재료학회논문지 Vol.18 No.4

Pb(Zr/sub 0.52/Ti/sub 0.48/)O₃(PZT) thin films were deposited by using a pulsed laser deposition method on a Pt/Ti/SiO₂/Si substrate with (Pb/sub 0.72/La/sub 0.28/)Ti/sub 0.93/O₃ (PLT) buffer and on a Pt/Ti/SiO₂/Si substrate without buffer. These films were annealed in H₂-contained ambient for 30 minutes at the substrate temperature of 400。C to evaluate the forming gas annealing effects. The comparative studies on the ferroelectric properties of these two films were carried out, which are shown that ferroelectric properties, such as remanent polarization didn't change in the case of PLT buffered PZT film while remanent polarization value of PZT film degraded from 20.8 C/㎠ to 7.3 C/㎠. The leakage current became higher in both cases, but that of the more-oriented PZT film had the moderate value of the 10/sup -6/ order of A/㎠. This is mainly because the hydrogen atoms which make the degradation of PZT films cannot infiltrate into the more -oriented PZT film as well as the less-oriented PZT film.

측방 접근법을 이용하여 상악동 거상술을 시행한 부위에 식립한 임플란트의 생존율에 대한 후향적 연구

이은선,안용범,이원진,김형섭,Lee, Eun-Sun,Ahn, Yong-Bum,Lee, Won-Jin,Kim, Hyung-Seop 대한치주과학회 2008 Journal of Periodontal & Implant Science Vol.38 No.4

Purpose: Osseointegration of implants in patients with pneumatized maxillary sinuses is difficult to achieve due to the deficiency of available bone in the posterior maxilla after loss of teeth. Maxillary sinus elevation is a method to overcome this problem. In this study, we evaluated the implant survival rate and the relationship between implant survival in patients with sinus elevation by the lateral approach. Materials and Methods: A total of 48 patients were consecutively treated with sinus elevation by the lateral approach between February 2003 & August 2006 at the dental hospital of Chonbuk National university. A total of 113 implants were placed. The mean healing period was 7.1 months and implants were placed after a mean period of 5.6 months. The mean observation period was 21.8 months. Results: Out of the 113 implants placed, fifteen failed, resulting in a survival rate of 86.7%, 18 cases of sinus membrane perforation were observed out of 65 sinuses treated. 33 implants were placed in a perforated site and 10 failed, representing a 60.7% implant survival. 80 implants were placed in a nonperforated site and 5 failed, representing a 92.6% implant survival. Conclusions: Implant placement with sinus elevation is an acceptable treatment for short term results. Sinus membrane perforation and postoperative complications, however, may have an effect on implant failure.

일축 압축하중 하 다공성 폴리우레탄폼의 재료비선형 거동 및 미세구조 변화

이은선,고태식,이치승,Lee, Eun Sun,Goh, Tae Sik,Lee, Chi-Seung 한국재료학회 2017 한국재료학회지 Vol.27 No.12

Porous materials such as polymeric foam are widely adopted in engineering and biomedical fields. Porous materials often exhibit complex nonlinear behaviors and are sensitive to material and environmental factors including cell size and shape, amount of porosity, and temperature, which are influenced by the type of base materials, reinforcements, method of fabrication, etc. Hence, the material characteristics of porous materials such as compressive stress-strain behavior and void volume fraction according to aforementioned factors should be precisely identified. In this study, unconfined uniaxial compressive test for two types of closed-cell structure polyurethane foam, namely, 0.16 and $0.32g/cm^3$ of densities were carried out. In addition, the void volume fraction of three different domains, namely, center, surface and buckling regions under various compressive strains (10 %, 30 %, 50 % and 70 %) were quantitatively observed using Micro 3D Computed Tomography(micro-CT) scanning system. Based on the experimental results, the relationship between compressive strain and void volume fraction with respect to cell size, density and boundary condition were investigated.

국제화시대 한국교육의 "무한경쟁주의" 극복을 위한 인문학적 성찰

이은선 ( Eun Sun Lee ) 한국교육철학학회(구 교육철학회) 2008 교육철학연구 Vol.41 No.-

한국 청소년의 스트레스와 구취의 관련성

이은선 ( Eun-sun Lee ),도경이 ( Kyung-yi Do ) 한국치위생학회 2022 한국치위생학회지 Vol.22 No.2

Objectives: The purpose of this study was to examine the relationship between stress and halitosis in a representative sample of Korean adolescents. Methods: This study was based on the 15th Korea Youth Risk Behavior Survey (2019). The final participation rate in the survey was 95.3%; 57,303 out of 60,100 (95.3%) adolescents aged 13-18 years were selected. Multiple logistic regression with complex samples was performed to identify the correlation between stress and halitosis. Stress level was classified as ‘very much’, ‘a little’, and ‘not much’ and halitosis was defined as the presence of an unpleasant odor in the oral cavity. Results: The prevalence of halitosis among students was 21.3%. As a result of multiple regression analysis, the ‘a little’ [odds ratio (OR); 1.39, 95% confidence interval (CI); 1.29-1.49] and ‘very much’ stress group (OR; 1.78, 95% CI; 1.66-1.90) exhibited significantly higher risk of halitosis than the ‘not much’ stress group. Conclusions: A significant correlation between stress and halitosis exists among Korean adolescents. Therefore, psychological factors such as stress should be considered in managing halitosis in adolescents.

무용공연장에서 마케팅믹스요인이 관객만족과 구전의도에 미치는 영향

이은선 ( Eun Sun Lee ),김화례 ( Hwa Rye Kim ) 대한무용학회 2011 대한무용학회논문집 Vol.69 No.-

The purpose of this study was to provide a basic data to attract and maintain the audience by looking at the effect of marketing mix factors on spectator`s satisfaction and word-of-mouth intention at performance halls. The total of 650 questionnaires using convenient sampling method were given out to people who have actually watched the performance at performance halls, and total of 575 questionnaires were used as final valid sample. As for data analysis, PASW Ver. 18.0 was used for frequency analysis, exploratory factor analysis, reliability analysis, correlation analysis and regression analysis. The results are as follows. First, the marketing mix factors at performance hall (such as production, promotion, and performance hall) influenced on the spectator`s satisfaction. Second, the marketing mix factors at performance hall (such as production, performance hall, people, and promotion) influenced on word-of-mouth intention but price factor had a negative influence on the word-of-mouth intention. Third, the spectator`s satisfaction had a significant influence on the word-of-mouth intention.

효율적 객체정보 검출을 위한 다중색상 정규화

이은선(Eun-Sun Lee),김상훈(Sang-Hoon Kim) 한국정보과학회 2002 한국정보과학회 학술발표논문집 Vol.29 No.2Ⅱ

본 연구에서는 영상안에서의 중요한 객체정보를 검출하기 위한 전처리 과정으로 효율적인 색상정보 정규화에 의한 영역분석 방법을 제안한다. 다중색상 정규화는 기존의 화소내 색상성분간의 정규화와 모든 화소에 대한 성분별 정규화를 복합적으로 사용함으로써, 객체의 영역들이 갖는 고유 생상성분의 분포를 좀더 특징 공간에 집중시키고 영상분할을 용이하게 한다. 이러한 방법의 효과를 입증하기 위해 가상의 입력영상을 제작하여 기존의 알고리즘과 본 논문에서의 방법을 함께 적용, 비교평가한다.

사회적경제의 개념과 발전, 제도화

이은선(Lee, Eun Sun),이현지(Lee, Hyunjee) 서울행정학회 2017 한국사회와 행정연구 Vol.28 No.1

본 연구는 사회적경제의 개념을 보다 명확히 규명하고 한국에의 정책적 함의를 도출하는데 목적이 있다. 본 연구는 그동안 사회적경제를 논의한 선행연구에서 간과하고 있는 세 가지 연결고리 -사회적경제가 발전하는 기본 원리가 시장경제의 부작용에 정부와 시민사회가 대응하는 과정이라는 것, 구사회적경제와 신사회적 경제가 단순한 시대구분이 아니라는 것, 제3부문의 개념정의가 사회적경제 조직을 지원하는 정책의 방향에 영향을 미쳤다는 점-를 포착했을 때 사회적경제에 대한 명료한 이해가 가능함을 강조하였다. 이러한 점을 고려해 본 연구에서는 폴라니(Polanyi)의 이중적 운동을 수정하여 분석틀을 제시하고 이에 따라 구사회적경제(old social economy)의 개념과 전개, 제3부문의 제도화가 신사회적경제에 미친 영향에 대해 논의하였다. 이후 구체적으로 영국, 프랑스, 미국을 사례로 신사회적경제(new social economy)의 구현에 대해 분석하였다. 이를 통해 한국의 사회적경제 논의에서 오해가 무엇인지를 밝히고, 향후 국내 사회적경제의 발전을 위한 함의를 도출하였다. The core of contentions in “Framework Act on Social Economy” initiatives in 2014 is related to the scope of the social economy, the system of policy-making, and jurisdictions. The reason why controversial debates have continued in the scope and definition of social economy in South Korea is that various type of social economy organizations has appeared before the concept of social economy has not fully discussed. This research is an attempt to clearly identify the concept of the social economy through the analysis of concepts, development, and indigenization of the social economy in France, the United Kingdom and the United States. This research discusses the emergence and re-emergence of the social economy from the 19th century (old social economy) to the 21st century (new social economy) with an adaptation of ‘double movement’ by Karl Polanyi, the third sector debates which have influenced on the scope and concept of the social economy today.

최근 한국 복음주의 운동 ; 한국 복음주의 신학의 최근 동향

이은선 ( Eun Sun Lee ) 현대기독교역사연구소 2009 성결교회와 신학 Vol.22 No.-

국내 사회적기업 조직군의 특성: 정책의 결과인가, 경쟁의 결과인가?

이은선 ( Eun Sun Lee ) 한국정책학회 2015 韓國政策學會報 Vol.24 No.4

본 연구는 국내 사회적기업 조직군에서 일자리제공형 사회적기업이 집중적으로 성장하고 있는 현상과 사회서비스 부문의 저조한 성장이 왜 나타나는지에 대해 분석하였다. 이론적으로는 조직생태학에 근거하여 이러한 특성이 정책의 결과인지 (진입)경쟁의 결과인지를 구체적으로 논의하였다. 분석결과 초기 사회적기업에 대한 정부의 관심은 일자리 창출이었고, 2007년 이전 사회적기업으로 간주될 수 있던 조직군 중 생활공동체/빈민운동 기반 조직군의 주요 관심도 일자리 창출이었기 때문에 국내 사회적기업이 일자리제공형에 집중되기 유리한 구조를 갖게 되었다. 인증심사시 일자리제공형이 유리한지에 대해 실증적으로 분석한 결과, 일자리제공형이 다른 유형에 비해 인증심사를 위한 서류증빙이 수월하여 전략적으로 이 유형을 선택하고 있음을 발견하였다. 실제 사회적기업 관계자, 예비사회적기업을 인터뷰한 결과 인증유형에 실질적인 의미를 부여하지 않는 경향이 있었다. 사회서비스 부문의 저조한 성장은 최초에 잘못된 업종구분에 따른 통계적 수치에 근거한 것으로 밝혀졌으며, 선행연구에서 제시한 다양한 해석 또한 이러한 현실을 전혀 반영하지 못한 것이었음을 발견하였다. This study analyzes why social enterprises that provide jobs have centrally developed among all the other organizing groups while social service sector has seen a lagging development in South Korea. Theoretically, based on the organizational ecology, this study discusses in detail whether such phenomenon is a result of policy or (entry) competition. According to the analysis, in the early years of social enterprise in South Korea, the government's main focus was on creating jobs; moreover before 2007, groups that could be considered as social enterprises like the so-called community groups or groups that act for the poor, also focused on job creation, therefore, South Korea's organizing structure of social enterprise became favorable to such a type. After an objective research on whether the Authorized Certification Job Creation type is favorable, it was revealed that this type has been picked strategically as it is less difficult to receive documentary evidences compared to other types. After conducting interviews with social entrepreneurs and pre-social entrepreneurs, they do not place practical significance to what authorization type they receive. Regarding the lagging development of the social service sector, it has been revealed that it was due to using the wrong statistical data by putting it in a different category in the initial years of research, and this study reveals that such reality has not been taken into account in any other preceding researches.