Laser Scanner Using Computer Generated Hologram

윤희철,이종창,신상영 대한전기학회 1984 대한전기학회 학술대회 논문집 Vol.1984 No.7

환경신기술 : 하수슬러지와 스텐레스분화슬래그를 혼합하여 열풍회전 3PASS 건조장치와 양생Silo를 이용한 시멘트 원료화 기술

윤희철,강석주,강진수,곽영세,황보준권 한국폐기물자원순환학회(구 한국폐기물학회) 2004 한국폐기물자원순환학회 춘계학술발표논문집 Vol.2004 No.-

A Study on the Determinants of the United Nation’s Conflict Management Activities in 1946~2017

윤희철 단국대학교 분쟁해결연구센터 2022 분쟁해결연구 Vol.20 No.1

Since the United Nations (the UN) has been established, it has played a great role to secure peace, protect people, and prevent war. When the UN identifies a conflict as a threat to world peace, it takes action under the Charter of the UN. However, the UN sometimes did not take any action for managing the conflicts. Why does the UN act in some conflicts but not in others? Even though previous research reveals the importance of P-5 states’ interests in the target nations, the severity of the conflict, and conflict trigger nations’ characteristics, studies regarding the impact of the relationship between superpower nations such as the U.S. and Russia/China on the UN’s action in international conflicts with empirical studies are absent. This article examines whether the relationship between the U.S. and Russia/China influences the UN’s action on the conflict in other parts of the world or not. This article provides empirical evidence that the relationship between Russia/China and the U.S. influences the UN’s taking action to the international conflicts. The results imply that the UN’s taking action to the conflict is depended on the UN’s original aim for peace and the relationship between the U.S. and Russia/China.

Northern Influences over the Emergence of the Definite Article the: With Special Reference to the Old English Glosses to the Lindisfarne Gospels and the Rushworth Gospels

윤희철 한국영어학학회 2023 영어학연구 Vol.29 No.1

The definite article the in English is generally known as a Middle English innovation arising from the Old English demonstrative se for nominative singular masculine. However, textual evidence from the interlinear Old English glosses to the Lindisfarne Gospels and those to the Rushworth Gospels proves that þe (= the) preexisted in Old English. Most of those glosses, which represent the Northern varieties of Old English, indicate that the morphological paradigms of distal demonstratives in those varieties tend to favor the þ-forms rather than the suppletive s-forms. Both glosses furthermore exhibit frequent confusion about grammatical gender and the use of weakened þ-forms. A combination of these morphological properties in Northern dialects could act as a language-internal trigger for the emergence of the indeclinable the as a unified form of a definite article in English.

주거환경개선사업의 조세담보금융(TIF) 적용을 위한 선정기준 연구

윤희철,정봉현 한국지역개발학회 2014 한국지역개발학회 세미나 논문집 Vol.2014 No.1

Recently there are discussion about securing the finances of the urban regeneration in Korea. Under this circumstances, this study pay attention to Tax Increment Financing(TIF). This study aims at the selection criteria for the application of TIF to prevent abuses by local governments. In order to achieve these objectives, this study selects evaluation indexes(safety, health, convenience, amenity) proposed by WHO, and it calculates the principal component scores by analyzing the principal component analysis(PCA) for the 8 districts in Gwangju metropolitan city. Through this way, it turns out to be need the evaluation of the plan in detail, from the beginning of the planning stage. This study has a limit from aspects that has a selection of 8 sample districts, and for this reason, it will be difficult to apply other regions because of regionality. However, this study has a meaning that suggests possible methodology in the project district of the small scale, by using the materials that are easy to collect for the analysis of the residential neighborhood in most local cities.

[특집] 제철부산물을 이용한 하수슬러지 건조․고형화기술

윤희철,강석주,강진수,곽영세,황보준권 유기성자원학회 2004 유기물자원화 Vol.12 No.3

남양주 초등학교 일반교실의 통로 폭에 관한 조사 연구

윤희철,Yoon, Hee-Cheol 한국교육녹색환경연구원 2020 교육·녹색환경연구 Vol.19 No.4

우리나라 초등학교의 학급당 학생 수는 평균 22.3명(2017년 기준)으로 우선 OECD 평균인 21.3명에 비해 1명 정도가 더 많은 수준이다. 최근에 교사들이 OECD 상위수준인 초등 19.2명(2015년 기준)으로 학급당 학생 수를 감축하라고 요구하고 있는 상황을 반영한다면 초등학교 학급당 인원은 최대 20명 정도로 귀결될 듯하다. 본 연구는 20명 수준에 맞는 학급교실의 모듈을 설정하기 위한 사전 연구로서 모듈결정에 주요 변인이 되는 교실에서의 각 지점의 통로폭을 현장조사를 통하여 살펴보았다. 남양주 지역에 위치한 2010년 이후에 개교한 초등학교 중 학급당 학생 수가 가장 많은 학교 1, 평균에 가까운 학교 3, 가장 적은 학교 1개교 총 5개교를 대상으로 하였다. 각 학교 당 저, 중, 고학년 각 2학급씩 총 30개의 교실을 대상으로 학급교실에 필요한 교사 및 학생들의 개인공간 크기, 교구를 둘러싼 통로 폭을 조사하였다. 그 결과는 다음과 같다. 첫째, 교실의 크기를 결정짓는 가장 기초적인 단위공간인 학생들의 책걸상으로 학년에 관계없이 책상은 650(W)×450(D), 걸상은 380(W)×400(D)의 규격을 사용하고 있다. 책상 간 거리는 앞뒤 거리는 45cm의 걸상 깊이(D)에 뒤 책상 경계와 5cm의 여유를 둔 50cm로 보는 것이 타당하다. 따라서 학생 1인당 단위공간의 크기는 650(W)×950(D)이 된다. 둘째, 대부분(87%)의 교실들이 일제식의 책상배치를 하고 있고, 모둠학습 형태로 배치되어 있는 학급은 13%로 조사되어 대부분의 학급이 평상시에는 일제식 수업으로 이루어지고 있다. 셋째, 교실에서 학생들이 이동 가능한 통로 폭은 조사한 학교들의 평균값에 의거하여 ① 칠판과 최전열 책상 간 최소 폭은 2.17m ② 최후열 걸상에서 뒤쪽 사물함과의 최소 통로 폭 1.32m ③ 복도쪽 벽에서 책상(걸상)까지 최소 폭 0.8m ④ 창가에서 책상 간 최소 폭 0.8m ⑤ 책상 간 종통로 2개의 평균 폭은 각각 0.67m, 0.68m로 나타났다. 넷째, 교사 공간의 면적은 가로 2.1~ 2.25m ×세로 2.16m=4.5~4.8㎡로 나타났다. This research is a preliminary study to find out the module of 20 students in a classroom. This research investigated the widths of passages in the 30 classrooms of 5 elementary schools in Namyangju City, Korea. The conclusions were as follows: First, the area of unit for 1 student was 650 (W) × 950 (D). Second, the desk placements for most classrooms were one-way types (87%), and group-study types constituted 13%. Third, the width between the blackboard and the very front desk was 2.17 m. The width of passage between the very back seat and the backside lockers was 1.32 m. The width of passage between the sidewall and the nearby desk was 0.8 m. The width of passage between the window and the nearby desk was 0.8 m. The average widths of 2 vertical passages between the desks were respectively 0.67 m and 0.68 m. Fourth, the area of the teacher was 2.1-2.25 m × 2.16 m = 4.5-4.8 ㎡.

Preparation and Characterization of Regenerated Cellulose/Polyethyleneimine Hydrogel for Humic Acid Removal

윤희철,방준식,박상우,김정규,정민정,정승오,곽효원 한국고분자학회 2023 한국고분자학회 학술대회 연구논문 초록집 Vol.48 No.1

교과교실제 운영에 따른 교과교실 공간배치 구성에 관한 연구

윤희철,Yoon, Hee-Cheol 한국교육녹색환경연구원 2011 교육·녹색환경연구 Vol.10 No.3

Ministry of Education, Science And Technology, from 2009 to 2014, try to establish the setting of Department System in the Middle Schools and High Schools. They selected 45 Schools in 2009 and 61 Schools in 2010 for the Advanced Department System. I studied 2 High schools in 2009 and 3 High schools in 2010 of them, which located in GyeongGi-Do. I studied the Location of Department Classrooms, Teachers' Labs, Homebases and Resting Spaces of them. The conclusions are follows. 1) Most of them take Horizontal Zoning System in the Department Classrooms. 2) The Number of Teachers' Labs were increased in most of floors. On the other hand, most of Labs' Area were decreased. Every department Classroom Zone has one Teachers' Lab. 3) Every schools took much more spaces of Homebases and Resting Spaces than before. And various Resting Spaces using Corridors and Outdoors are prepared for students, those who moves every changing class time by the Department System.

만성 비부비동염 환자에서의 비용이 후각장애에 주는 영향

윤희철,김태민,주재우,송인식,홍승노,유준혁,이승훈 대한비과학회 2017 Journal of rhinology Vol.24 No.1

Background and Objectives: Olfactory disturbance is a major sinonasal symptom of chronic rhinosinusitis (CRS) with nasal polyps (NP). The aim of this study was to investigate the relationship between the severity of nasal polyposis and olfactory dysfunction in CRS. Subjects and Method: A total of 277 subjects with CRS were included in this study. All participants were divided into four groups according to the size and degree of the nasal polyposis: the control group (no polyp; n=79); NP (nasal polyp) group I (both or unilateral simple polyposis; n=85); NP group II (unilateral diffuse polyposis; n=66); and NP group III (bilateral diffuse polyposis; n=47). We analyzed the relationships between the severity of nasal polyposis and olfactory dysfunction using both the Korean Version of the “Sniffin’Sticks” test (KVSS Test) II and the Questionnaire of Olfactory Disorders (QOD). Results: The KVSS Test II TDI score was significantly decreased in the bilateral diffuse polyposis group (NP group III= 15.62±13.39) compared to the other polyp groups [control group=25.04±9.67 (p<0.001); NP group I=21.67±11.18 (p=0.005); NP group II=21.51±10.85 (p=0.008)]. However, there were no significant differences in the KVSS Test II TDI score between the control group and NP groups I and II. For the QOD_NS score, only NP group III (11.51±9.87) had significantly increased values compared to the control group [8.42±12.27 (p=0.015)]. Conclusion: These results suggest that bilateral diffuse nasal polyposis is related to significant olfactory dysfunction in CRS.