Improvement of adhesion properties of glass prepared using SiC‑deposited graphite mold via low‑temperature chemical vapor deposition

Kyoung‑Ho Kim,Kuk‑Jin Hwang,Heesoo Lee,Seong‑Min Jeong,이명현,배시영 한국세라믹학회 2020 한국세라믹학회지 Vol.57 No.1

Compression glass molding is a promising technique for mass production of near net-shaped, high-precision, and low-cost optical glass elements. However, the glass molding process causes the damage of glass and the mold during demolding because of the chemical or physical adhesion of the glass to the mold. To overcome this limitation, graphite molds are used owing to their good lubrication and easy machining. However, graphite materials show rapid oxidation at high temperatures in the presence of oxygen. Therefore, in this study, a thin SiC coating layer was deposited on the graphite mold using the chemical vapor deposition (CVD) method to utilize the lubrication properties of graphite and the anti-oxidation properties of SiC. The specimen obtained using the low-temperature CVD method showed high carbon content and good lubrication properties than that obtained using the high-temperature CVD method.

慶南地方에 傳承된 湯類에 대한 考擦

黃己娥,金景子 東亞大學校 大學院 1980 大學院論文集 Vol.4 No.1

Currently, the originality of traditional cookings in Kyong-Nam Province is vanishing by the influx of processed and instant foods. Especially, such factors as the influence of alien cuisin, the development of transportation, the movement of population have made it hard to preserve the traditional cookings. In this thesis, the suthor paid much attention to seek out the characteristics of Kyoung-Nam 'Tang' and suggested ways of preserving original foods by surveying neglected and forlorn traditional soups. The main features of Kyoung-Nam 'Tangs' are to be summarized as follows: 1) Much(above average) salt and red-pepper are used and they taste rather salty and hot as Well as simple and pure. 2) More fishes are used than meat, and the ingredients of soup are will balanced in their nutritional combination. 3) Much garlic, mill-plant, chinese pepper, spices are used. 4) Mak-Jang is used in vegetable soup, and radish is always harmonized with fish.

現代 國語의 依存 名訶 硏究

황경수 청주대학교 인문과학연구소 1997 人文科學論集 Vol.17 No.-

폐 FRP/Urethane Foam 충진 혼성복합재의 제조 및 기계적 물성에 관한 연구

황택성,신경섭,박진원 공주대학교 자원재활용신소재지역협력센터 2000 2차년도 센터 사업 성과집 Vol.2000 No.1

욕조 생산시 발생하는 폐 FRP와 냉장고 등 가전품과 폐단열재로부터 발생하는 폐우레탄폼을 흡음 및 경량판재로 재활용하기 위하여 불포화 폴리에스테르 매트릭스 수지에 보강하여 복합재를 제조하였다. 또한 충진재의 함량의 변화가 복합재의 기계적 물성에 미치는 영향과 기지와 보강재간의 계면현상을 관찰하였다. 충진제의 함량이 70 wt%인 복합재의 인장강도는 82.34MPa로 가장 우수하였으며, 인장탄성율은 보강재의 함량이 증가함에 따라 감소하였다. 또한 굴곡강도와 굴곡탄성율은 폐FRP의 함량이 70wt% 충진된 복합재가 가장 우수하였으며, 그 값은 각각 72.5, 958.4MPa이었다. SEM 관찰 결과 70 wt% 충진된 충진제 매트릭스 수지의 계면에서 pull out 현상이 확인되지 않았으며 균열도 발생하지 않았고, 매트릭스 수지내에 충진된 폐 FRP/우레탄폼 충진제가 잘 분산되어 있음을 확인할 수 있었다. The waste FRP oocured in the fabrication of SMC (sheet molding campound) bathtubs and the waste polyurethane foam occured in electronic manufacture and waste insulator were applied as a soundproof and light weight pannel in the waste FRP unsaturated polyester matrix resin composites to recycle. The effect of filler contents of the mechanical properties and interfacial phenomena of the filler and matrix on the composites was evaluated. The tensile strength of composites reached its maximum value of 82.34 MPa when the filler content was 70 wt%, and the more content of reinforcement is increased, the more tensile modulus was decreased. The flexural strength and modulus of csomposites, reinforced 70 wt% with filler content, were dominant compared to the other samples to 72.5 Mpa, 958.4 MPa respectively. When composite of reinforced 70 wt% with filler content, it was confirmed that pull out phenomena and cracks did not occur in the interface of reinforcement and matrix resin through the SEM observation. Also, waste FRP and urethane foam were dispersed well into matrix resin as filler.

상담의 실존주의적 접근

황경열 大邱大學校 再活科學硏究 1991 再活科學硏究 Vol.9 No.1

There are many approaches to counseling and psychotherapy which legitimately may be termed existential. Each of these approaches has as its prime focus the nature of man's existence and how he experiences the world. The existential approach is rather much a homeless waif. It does not really belong anywhere. It has no homestead, no formal school, no institution; it is not welcomed into the better academic neighborhoods. It does, however, have a genealogy. a fews cattered cousins and friends of the family: existential philosophy, existential analysis, humanistic psychology, and humanistic psychoanalysis. The existential approach views man as responsible, free to choose his way of being, and as a constantly emerging being. Man is born into an unknown world and thus he is anxious. He moves in the face of this existential anxiety. Meaning is essential for life, Frankl claims. The human being seems to required meaning. To live without meaning, goals, values seems to provoke considerable distress. In severe form it may lead to the decision to end one's life. When frankl speaks of existential desparir, he refers to a state of meaninglessness. Relationship is the principal means for bringing to expression the world of meaning in which the client lives. The quality of the relationship determines to what degree the personal existential world will find genuine expression. The first task of the counselor is, therefore, to establish a relationship which leads to optimal communication. The relationship itself which should be established by the counselor differs from the structure of other relationships. First it is different because of its objectives, and second, it is different from other relationships because of the specific attitudes of the counselor:acceptance, gentleness, sincerity, and creativity. The attitudes of the counselor aim at the expression of the personal existential world of the client. The existential approach argue that counseling is a real life process and as such allows whatever technique that emerges during the counseling process to occur.

K-Band 투과형 유전체 공진기에 관한 연구

황재효,민경일 永同大學校 2001 硏究論叢 Vol.7 No.1

본 논문에서는 저 방사손실의 무차폐 유전체 투과형 공진기를 제안하고 제작하였다. 2개의 입출력 선로를 가지는 W. G. 모드 투과형 공진기는 단독 공진기나 하나의 선로를 가지는 공진기와는 공진주파수가 달라지므로 이러한 변화를 고려한 공진기의 해석방법을 제안한다. 제안된 공진기 이론을 가지고 26.8GHz에서 28.3GHz까지 계산하여 공진특성을 구하였다. 계산된 공진주파수는 단독 공진기의 공진주파수와 달라짐을 보였다. 본 연구의 결과, W. G. 모드 투과형 공진기설계를 위한 기초 자료를 얻을 수 있었다. In this study, a low radiation loss, unshielded dielectric transmission type resonator on millimeter wave is designed and fabricated. As the resonance frequency of the dielectric transmission type Whispering Gallery mode(W. G. mode) resonator which has two input/output waveguides is different from that of isolated resonator or single input resonator, a new method considering the frequency variation is proposed. With the proposed theory, the resonance frequency is calculated in frequency range 26.8GHz to 28.3GHz. We show that the calculated resonance frequency is differs from the one of the isolated resonator. As the results, a design method for transmission type W. G, mode resonator is acquired.

국가정보보호수준 측정 및 활용에 관한 연구

황철중,주용완,민경식,정경호 한국정보사회진흥원 2006 정보화정책 Vol.13 No.3

정보보호 수준을 측정하는 것은 매우 어려운 일로써 정보보호의 영역이 계속 확장됨에 따라 개념자체를 정의하기가 어렵고 아울러 다차원적인 요인을 포함하는 정보보호 지표 선정의 어려움, 시계열적인 통계 데이터 부족, 상이한 정보보호 지표를 하나의 지수로 통합하는 문제가 있기 때문이다. 그럼에도 불구하고 정보보호수준을 계량적으로 측정하기 위한 방법론으로 가장 적합한 것은 지수화하는 것이다. 이는 정책입안자나 정보보호 이해관련자들이 종합적인 측면에서 정보보호수준 목표를 결정하고 실행결과를 평가하는데 용이하기 때문이다. 본 연구의 목적은 정보보호정책 수립 및 평가의 기초 자료로 활용할 수 있는 지수를 산출하기 위한 종합적인 정보보호수준 평가지수 모델을 제시하고 지수를 산출하는데 있다. 지수산출결과, 정보보호수준은 2002년부터 2005년까지를 시계열적으로 보면 매년 평균 5.8%의 증가추세를 보이고 있다. 반면 역기능수준은 2003년 1.25 인터넷 대란으로 증가한 것을 제외하고 꾸준한 감소추세를 나타내고 있다. 특히 정보보호수준과 역기능수준이 발산하고 있어 정보보호정책이 유효하게 작용하고 있다고 판단되어진다.

비구조적 소집단 훈련이 자아개념과 자기노출에 미치는 효과

황경열 大邱大學校 特殊敎育ㆍ再活科學硏究所 1999 再活科學硏究 Vol.15 No.1

본 연구는 우리 전통문화와 선불교적 입장을 근거로 만들어진 비구조적 소집단훈련이 참여자의 자아개념에 어떤 효과를 미치는가를 알아보기 위하여 훈련전과 후에 자아개념을 측정하여 훈련 효과를 검증하고자 하였다. 또한 훈련 효과와 관련이 높다고 생각되는 과정변인인 자기노출이 훈련을 통하여 어떤 변화를 보이는지 알아보고자 하였다. 자기노출의 변화를 분석하기 위해 참여자들에게 사전 양해를 구하고 총 24회기 중 강의와 신체활동시간을 제외한 16회기 모두 녹음하였다. 본 연구의 참여자는 총 28명 훈련 안내장을 받고서 참여한 유료 자원자들이었다. 대기집단은 훈련 안내장을 받고서 참여하기를 원하였으나 훈련 참여자수의 제한으로 인해 다음 기회를 기다리는 사람들 중에서 훈련집단의 참여자들과 성별, 연령, 학력 등을 짝짓기 하여 선발하였다. 자아개념에서 훈련 전에 비해 집단간에 통계적으로 유의미한 차이를 보인 변인은 총자아 긍정, 자아 동일성, 자아 행동성, 신체적 자아, 도덕적 자아, 성격적 자아 그리고 사회적 자아였다. 즉 훈련 직후 총자아 긍정 및 6개 하위변인들의 득점이 유의미하게 증가하였다. 자기노출 3구획에서 가장 높은 빈도를 나타내었고 그 다음으로 1구획, 2구획 순이었다. 사후개별 비교한 결과 1, 3구획과 2구획간에 유의미한 차이가 있었다. The purpose of this study was to analyze the verbal interactional process in the small group training and to explore the effect of the small group training process on the training effect. The training effect was measured by the change in the scores on the self-concept test, which was performed before and immediately after the training. The participants were distributed into the treatment group(n=14) or the waiting list group(n=14). The treatment group experienced the residential intensive process which consisted of 25 sessions, and were encouraged to actively participate in the self-disclosure in the non-structured situation. In contrast, waiting list group were not given any training during the same period. ANOVAs based on the degree of change in the self-concept, indicated that in the immediate traing effect the total score on self-affirmance and the scores on six subscales changed significantly. This study implied that self-disclosure were important factors in the small group training process. The participants, though they experienced the same group process, differed in their verbal response patterns. Individual verb response patterns divided the whole participants into three groups and one of these groups was congruent with the Tuckman & Jensen' s development model(1977). This group indicated higher mean change score than the other two groups in the immediate self-concept test. These three groups were analyzed in terms of the training effect, but were not statistically significant.

영동할미제 試論 : 釜山地方을 중심으로

황경숙 釜山大學校 1995 人文論叢 Vol.46 No.1

This study aim to find out the ritual structure and character of the Ritual for youngdong Halmi through the case analyses in Pusan district. To find out the meaning of the Ritual for Youngdong Halmi as a folk belief, I firstly study the ritual character through both the name of Youngdong Halmi and the meaning of Febrary in the universal rhythm repeated peridically. And considering organic relation between e-wol poongsin Je(the ritual for wind god in Febrary) and sondoll wind, I exmine both contrastively. 1. In seasonal ritual passage, January is the period that is seperated from the death, the previous condition of everything. March is the period that unifies everything into new life. So, Faburary is the trader period. 2. Like Samsirn Halmi(three gods governing childbirh) and Jesuk Hulmi(the harvest god), E-wol poongsin(wind god in Febrary) is considered as the god of production. Sansin is the god of production and growth in the realm of men, while E-wol poongsin is ehe god of universal production and of agriculture, protecting and growing the bud of plants. The spacial meaning of ritual concerning survival shows such recognition of yooongdong Halmi. 3. E-wol poongsin is called Hulmi. Halmi has not only nagative meaning in losing productivity but also positive meaning in having expeience and wisdom. 4. The time around the 15th of october held the ritual to offer the god new products, is the period that ends product activities and the transitional period toward winter(death, extinction). Sondoll wind is transitional one changing summer(spring can belong to summer) into winter(fall can belong to winter). So, it is interpreted in the context of ritual fire extinguishing. The ritual for youngdong Halmi stop the wind of death and impotence(that is Sondoll wind). Youngdong halmi is known as a god who gives a new life and expels the shadow of death in the land.

집단상담의 초기단계에서 활용될 수 있는 기법과 활동

황경열 大邱大學校 社會科學硏究所 1992 社會文化硏究 Vol.11 No.-