소형 비행기 동력장치에 관한 신규 인증요건 분석

이은석(Eunsuk Lee),이승근(Seung geun Lee),이강이(Kang-Yi Lee) 한국추진공학회 2018 한국추진공학회지 Vol.22 No.3

국내 민간 소형비행기 기술기준 개정 방안

이은석(Eunsuk Lee),이승근(Seung geun Lee),이강이(Kang-yi Lee) 항공우주시스템공학회 2017 항공우주시스템공학회 학술대회 발표집 Vol.2017 No.11

소형 비행기 동력장치에 관한 신규 인증요건 분석

이은석(Eunsuk Lee),이승근(Seung geun Lee),이강이(Kang-Yi Lee) 한국추진공학회 2017 한국추진공학회 학술대회논문집 Vol.2017 No.5

우리나라 민간 소형 비행기 동력장치의 감항기준은 KAS Part 23(소형 비행기)과 Part 33(엔진)에서 규정하고 있다. 이 기준은 미연방항공청(FAA)의 FAR Part 23 및 Part 33과 유럽항공안전청(EASA)의 CS-23 및 CS-E와 동등한 체계를 갖는다. FAA와 EASA는 소형 비행기의 감항기준을 전면 개정하였다. 설계 방식과 적합성 입증방법을 지정한 규범적 규정에서 안전한 성능을 달성하도록 목표를 지정하는 성능기반형 규정으로 전환한 것이다. 이러한 개념적 전환에 따라 동력장치 감항기준 또한 기존의 요건에서 대폭 변경되었다. 이에 따라 FAA의 동력장치 인증요건 개정 사항을 살펴보고 우리나라의 감항기준 개정 방향을 고찰하였다. Korean civil airworthiness requirements of powerplant system are regulated on KAS Part 23 and Part 33. These are equivalent to FAR Part 23, Part 33 of FAA and CS-23, CS-E of EASA. FAA and EASA rewrites entire airworthiness requirements for the small airplane. It changed current ‘prescriptive regulation’ into ‘performance-based regulation’ which makes the object of safety performance. Powerplant requirements are also changed extensively by these concept revolution. In accordance with reorganization, we studied new powerplant system requirements of FAR Part 23 and proposed ideal direction to rewrite of Korean Airworthiness Standard rewrite.

SGML 문서 관리 시스템의 데이터베이스 관리기 설계 및 구현

이원석(Wonsuk Lee),류은숙(Eunsuk Ryu),김용훈(Yonghun Kim),이상기(Sangki Lee),김현기(Hyunki Kim),이혜란(Haeran Lee),주종철(Zongchul Zhoo),이규철(Kyuchul Lee) 한국정보과학회 1997 한국정보과학회 학술발표논문집 Vol.24 No.2Ⅰ

SGML은 문서 정보를 체계적으로 조직하고, 생성하고, 전송하기 위한 문서 표준으로서 문서의 적절한 구조가 유지되도록 문서 구조를 표현하는데 사용할 수 있다. 이러한 문서 형태로 표현된 정보에서는 기존의 파일 형태의 정보에 비해 의미적인 정보의 단위를 구조(structure)로서 표현하며, 이 구조 정보를 이용해 문서의 관리 및 검색, 저장에 이용할 수 있는 장점이 있다. 본 논문에서는 SGML 문서 관리 시스템의 하부 구조로서 대량의 SGML 문서를 효율적으로 저장 및 검색, 관리할 수 있는 데이터베이스 관리기 구조의 필요 모듈들을 도출하고 각 모듈의 기능과 모듈 사이의 인터페이스 관계를 기술하였다. 또한 본 논문에서는 데이터베이스 관리기 구조의 각 모듈에 대한 구현 내용을 설명하기 위해 각 모듈간의 데이터 처리 흐름도를 기술하였으며, 구현 환경으로는 객체 지향 DBMS인 O2 DBMS를 기반으로 한다.

Multi-story Mountains: Experiences of Mothers with Leukemia Children

( Eunsuk Lee ) 한국모자보건학회 2020 한국모자보건학회 학술대회 연제집 Vol.2020 No.-

Purpose: Chronic illness of childhood affects the parents' quality of life. Leukemia continues to be the largest contributor to cancer-related mortality in children. It is reported that parents of chronic ill children experience chronic grief and low quality of life. The objective of this study was to explore the experiences of mothers with leukemia children. Methods: A qualitative approach with phenomenological design was used. To collect depth information from the mothers of children with leukemia, purposive sampling technique was adopted. Data were collected from 10 mothers and each interview was about 35 to 45 minute. The interviewed data were analyzed through thematic analysis using Giorgi’s method. Inclusion criteria were mothers of children between the age group of 1-16 years diagnosed with leukemia and undergoing chemotherapy. Results: The average age of the mothers was 39.24(±4.14). The majority of mothers was employed (n=10; 100%), college education (n=7; 70.0%), Christian affiliated religious preference (n=8; 80.0%), married (n=10; 100%), middle class socioeconomic status (n=6; 60.0%) and the number of child was from 1 to 2 (n=10; 100%). Participants’ occupations were part-time or full-time employees in a small business store or educational institution. The results of the interviews extracted were carefully reviewed and the responses were categorized in the form of concepts in order to identify the experiences of mothers in caring for a child with leukemia. There were 5 themes were analyzed: ‘feelings of multi-story mountains: concern about the child’s death’, ‘inability of mothers to answer the children’s questions’, ‘inability to deal adequately with child aggression’, ‘suffering from the complications of the treatment’, and ‘financial, social, spiritual, psychological burden’. In the ‘feelings of multi-story mountains: concern about the child’s death’ theme, 3 categories were classified: ‘feeling hopeless for treatment of their children’, ‘difficulties in sleeping’, and ‘lack of time to spend with their children’. In the ‘inability of mothers to answer the children’s questions’ theme, 2 categories were identified: ‘inability of parents to answer questions about the reason of their children diseased’, and ‘inability of parents to answer their children’s questions about death’. In the ‘inability to deal adequately with child aggression’ theme, 2 categories were extracted: ‘inability to deal with child fights with her associates’, and ‘inability to deal with child aggression for resisting in taking the medicine’. In the ‘suffering from the complications of the treatment’ theme, 2 categories were explored: ‘suffering from children’s hair loss as a complications of the chemotherapy’, and ‘suffering from children’s nauseous and vomiting as a complications of the chemotherapy’. In the ‘financial, social, spiritual, psychological burden’ theme, 4 categories were discovered: ‘financial burden due to direct and indirect costs’, ‘psychological problems on the family due to change of mood, being ill-tempered, being nervous and sensitive’, ‘spiritual needs in prayer and difficulties in finding trust in God’, and ‘emotional pain and agony’. Conclusion: The results explored that mothers were shocked when they heard of the diagnosis of the child and went through a process of grief, and gradual acceptance had taken place. Many of the mothers had felt emotionally unstable and cried while they heard of the diagnosis. Thus, chronic illness such as leukemia in children results in negative impact on the child and on the mother. The present study finding also revealed that the condition of the child resulted in emotional impact on the mothers. Understanding these experiences helps the nurses in providing holistic care to a child with leukemia, apart from providing physical comfort to the child, she also needs to shift her attention toward the other dimensions of the child's personality and address the needs of mothers.

Reconsidered: should vs. must

Eunsuk Lee,Juhyun Back 한국영미어문학회 2015 영미어문학 Vol.- No.118

The purpose of this study is to distinguish between the usages of the epistemic modals should and must based on the deductive processes and logical inferences that they indicate. To achieve this purpose, the study presents several examples using should and must from previous studies, which have recognized differences in the meanings of the terms especially in relation to time and causality. However, it is found that some of these examples cannot be explained by previous approaches applied separately. Instead, the approaches must be applied together in the case of examples belonging to one of four categories. First, epistemic modal must can be used when a deduction is being made about a present or past situation and causes are being inferred from consequences. In contrast, in the second category, with should , deducing the time of the event is only possible in the future tense, when it is integrated with inferred consequences from their causes. However, in the last two categories, both should and must can be used when the inferred time of the event is in the present or the past and causality moves from cause to consequence, or when the inferred situation is in the future and the causality moves from consequence to cause.

Informational Processing Style, Spiritual Well-Being, and Quality of Life in the Chronically Critically Ill Elderly Patients

Eunsuk Lee 한국간호과학회 2015 한국간호과학회 학술대회 Vol.2015 No.10

Event-based Types of Languages Revisited in Cognitive Constraints

Eunsuk Lee 한국영미어문학회 2010 영미어문학 Vol.- No.96

This paper assesses the empirical adequacy of linguistic parameters in the context of Chomsky's Universal Grammar by presenting some examples against an event-based language typology. This paper also suggests that cognitive processing mechanisms underlying language processing, rather than linguistic characteristics, might be the source of language universality and that diversity of language might be constrained by common cognitive processing mechanisms.

The Death Anxiety among the Female Elderly Living Alone in Urban Areas

( Eunsuk Lee ) 한국모자보건학회 2019 한국모자보건학회 학술대회 연제집 Vol.2019 No.2

Purpose: Death always coexists with human life. However, as people enter the old age, they deny and avoid death, have a perception that life ends with death, or even consider it taboo to talk about their own death. Thus, they have little chance of exploring death and live with vague anxiety about death. Death anxiety is a negative attitude towards death, includes cognitive and emotional anxiety, and anxiety about physical changes. It refers to fear, dread or worry about death itself and the process of dying. The purpose of the study is to examine the status of death anxiety in the female elderly living alone in urban areas. Methods: Data were collected using the Fear of Death and Dying Scale (FDDS) to measure death anxiety for the participants. The target population was the female elderly who were living alone in the urban areas. A convenience sample of 98 female elderly participated in this descriptive study in D city. Data were analyzed with number, percentage, Pearson’s correlation, and multiple regression analysis using SPSS/Win 25.0. Inclusion criteria were age of 65 years or over and female participants who were able to understand the purpose of the study and agreed to participate in this study. Results: Out of 98 participants, the majority was not employed (n=62; 63.3%), middle school education (n=70; 71.4%), Christian affiliation (n=59; 60.2%), and low class socioeconomic status (n=72; 73.5%). Participants’ average age was 78.13 (±4.19) and duration of living alone in year was 10.90(±5.28). There was a significant positive correlation between death anxiety and age (r=.51, p<.01) and between death anxiety and duration of living along in years (r=.81, p<.01). There was a significant negative correlation between death anxiety and monthly income (r=-.23, p<.01); between death anxiety and the number of child (r=-.73, p<.01); between death anxiety and the frequency of phone communication with children in year (r=-.78, p<.01); and between death anxiety and the frequency of visitation by children (r=-.88, p<.01). The regression model significantly explained 49% of the variances in terms of death anxiety; the most influential factor to predict death anxiety was the frequency of visitation by children (β=.561, p<.01). The participant’s age (β=.351, p<.01), the duration of living alone in years (β=.287, p<.01), the frequency of phone communication with children in year (β =-.277, p<.01), the number of children (β=-.235, p<.01), and monthly income (β=-.127, p<.01) were also significant predictors for death anxiety. Conclusion: According to the results of this study, the frequency of visitation by children, the duration of living alone in year, the frequency of phone communication with children, the number of children, age, and monthly income were the explanatory factors of death anxiety in the elderly living alone in urban areas. In a rapidly changing society, it is difficult for the elderly to adjust to changes in society, and these days, it has become very difficult for the poor elderly to achieve successful aging. Therefore, the results of the study will be utilized to develop intervention program and health care protocol for the elderly living alone in the urban areas.

Microstructural Control over Soluble Pentacene Deposited by Capillary Pen Printing for Organic Electronics

Lee, Wi Hyoung,Min, Honggi,Park, Namwoo,Lee, Junghwi,Seo, Eunsuk,Kang, Boseok,Cho, Kilwon,Lee, Hwa Sung American Chemical Society 2013 ACS APPLIED MATERIALS & INTERFACES Vol.5 No.16

<P>Research into printing techniques has received special attention for the commercialization of cost-efficient organic electronics. Here, we have developed a capillary pen printing technique to realize a large-area pattern array of organic transistors and systematically investigated self-organization behavior of printed soluble organic semiconductor ink. The capillary pen-printed deposits of organic semiconductor, 6,13-bis(triisopropylsilylethynyl) pentacene (TIPS_PEN), was well-optimized in terms of morphological and microstructural properties by using ink with mixed solvents of chlorobenzene (CB) and 1,2-dichlorobenzene (DCB). Especially, a 1:1 solvent ratio results in the best transistor performances. This result is attributed to the unique evaporation characteristics of the TIPS_PEN deposits where fast evaporation of CB induces a morphological evolution at the initial printed position, and the remaining DCB with slow evaporation rate offers a favorable crystal evolution at the pinned position. Finally, a large-area transistor array was facilely fabricated by drawing organic electrodes and active layers with a versatile capillary pen. Our approach provides an efficient printing technique for fabricating large-area arrays of organic electronics and further suggests a methodology to enhance their performances by microstructural control of the printed organic semiconducting deposits.</P><P><B>Graphic Abstract</B> <IMG SRC='http://pubs.acs.org/appl/literatum/publisher/achs/journals/content/aamick/2013/aamick.2013.5.issue-16/am401698c/production/images/medium/am-2013-01698c_0010.gif'></P>