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공정능력지수들과 6 시그마 품질수준에 대한 통계적 추론
조중재,심규영,박병선,Cho, Joong-Jae,Sim, Kyu-Young,Park, Byoung-Sun 한국통계학회 2008 Communications for statistical applications and me Vol.15 No.3
6 시그마는 백만 기회당 3.4개의 결점만을 갖는 최고의 품질수준을 의미한다. 일반적으로 높은 시그마 품질수준은 고객들에게 높은 만족도를 부여하는 것으로 알려져 있다. 공정능력지수들과 시그마 품질수준 $Z_{st}$는 6시그마 산업에서 공정능력을 평가하기 위하여 널리 이용되고 있다 공정능력지수에 관한 대부분의 평가들은 공정능력분석에 대해 경우에 따라 믿기 어려운 상황을 초래할 수도 있는 점 추정에 초점을 두고 있다. 본 논문에서는 현장 실무자들이 공정능력 여부를 결정하기 위하여 사용하고 있는 6시그마 품질수준 $Z_{st}$와 공정능력지수들 $C_p$, $C_{pk}$와 $C_{pm}$에 대하여 몇 가지 통계적 추정문제를 기초로 보다 효율적인 검정 방법에 대하여 제안, 연구하였다. 제안된 붓스트랩 검정 방법에 근거한 모의실험 결과는 공정분포의 정규성 여부에 관계없이 그리고 복잡한 계산 과정 없이 보다 효율적으로 적용될 수 있음을 입증하고 있다. Six sigma is the rating that signifies "best in clas", with only 3.4 defects per million units or operations. Higher sigma quality level is generally perceived by customers as improved performance by assigning a correspondingly higher satisfaction score. The process capability indices and the sigma level $Z_{st}$ have been widely used in six sigma industries to assess process performance. Most evaluations on process capability indices focus on point estimates, which may result in unreliable assessments of process performance. In this paper, we consider statistical inference for process capability indices $C_p$, $C_{pk}$ and $C_{pm}$. Also, we study better testing procedure on assessing sigma level $Z_{st}$ and capability index $C_{pm}$, for practitioners to use in determining whether a given process is capable. The proposed method is easy to use and the decision making is more reliable. Whether a process is clearly normal or nonnormal, our bootstrap testing procedure could be applied effectively without the complexity of calculation. A numerical result based on our proposed method is illustrated.
초등학교 창의융합 교육환경 조성을 위한 교육정책 및 선례에 대한 연구 - 지역사회와 연계를 중심으로 -
류혜민(Ryu, Hye-Min),심규영(Sim, Kyu-Young) 대한건축학회 2021 대한건축학회 학술발표대회 논문집 Vol.41 No.2
The purpose of this study is to analyze the space pursued by the current educational curriculum and to examine the effective space for cooperation with the region. Based on theoretical examination, the theoretical trends related to current educational policies and educational environment are summarized, and the examples of elementary schools linked to local communities are discussed. Therefore, in cooperation with the local community, we would like to supplement the part where the educational environment of elementary schools plays a practical role as a creative educational environment and a center of local communities.
다세대 주택에서의 물리적, 정서적 환경개선의 가능성에 관한 연구 -청주 사창동 다세대 주택의 쉐어하우스 레노베이션 방안을 중심으로-
최보라 ( Bora Choi ),박규빈 ( Kyu Vin Park ),심규영 ( Kyu Young Sim ) 충북대학교 건설기술연구소 2015 建設技術論文集 Vol.34 No.2
본 연구는 쉐어하우스라는 프로그램적 전략의 도입을 통해 주택 하위 시장을 활성화시키고 나아가 다세대 주택이 밀집한 도시환경과 거주자 중심의 물리적, 정서적 환경개선의 가능성을 파악하고자 한 것이다. 이를 위해 디자인 워크숍이 진행 되었으며 2개의 조를 구성하여 청주시 사창동 186-5번지 다세대 주택을 대상으로 한 계획안을 도출하였다. A조는 프로그램적 (Software) 접근으로써 공용공간을 이용한 사람사이의 소통의 디자인일, B조는 건축적(Hardware) 접근으로써 재료와 분위기 연출을 통한 디자인을 추구하였으며 두 계획안 모두 예상 사용자 시도된 촉지적 측면의 접근 모두, 다세대 주택에서 물리적, 정서적 환경개선의 대안으로써 가능성이 있음을 확인할 수 있었다. The purpose of this study was to vitalize housing sub-markets and high-density residential area with Multi-family housing, to examine the possibility of physical and emotional betterment for the residents. For that, Design workshop was carried out. It aimed to suggest actual multi-family housing remodeling ideas to Sharehouse based on 2 different approach. Team A dealt with this matter using contents approach which is communication design between people. Team B went further and suggested more architectural way like material and atmosphere design. And it was used as a base data for the survey of the probable user``s housing condition targeting university students who are living in multi-family housing. The major results were as followings: 1) The residents expressed their strong preference of house`s external condition and the satisfaction of price and distance. 2) The overall housing betterment in both physical and emotional way was favorable. Most of the respondents answered positive response about the renovtion plans even the site was quite far from their campus. 3) Permissible range of Sharing space should be studied in practical and quantitative way.
물리학적 장의 개념을 통한 건축과 풍수 배치원칙의 조응관계 분석
장혁진 ( Jang Hyeok-jin ),심규영 ( Sim Kyu-young ),손동화 ( Shon Dong-hwa ) 충북대학교 건설기술연구소 2021 建設技術論文集 Vol.40 No.1
The outlook of east and west, influenced the mindset of the people of that era and various fields such as culture, philosophy, art, and architecture. These ideas were naturally expressed in life, and the West has changed its worldview many times, resulting in a variety of attitudes toward architecture. The West has changed its worldview with changes in science from ancient times, classical humanities, and modern humanities. On the other, the organic worldview that breathes east with nature for many years to build relationships has continued to this day. The organic worldview seeks harmony as an aim to breathe nature with humans, and this way of thinking is also naturally evident in architecture. However, in the 19th century, when rapid Westernization led to the embrace of the mechanical mindset of classical humanities in the West, traditional architecture began to be interpreted as Western ideas and mindsets. In the era of modern physiology, the Western worldview has changed to an organic worldview, but mechanical thinking and understanding methods still exist in interpreting traditional architecture and limiting the view of architecture and nature. Further, traditional architecture is a situation that confines the breadth of thinking in expressing the true value of traditional architecture because it is an architecture that reflects the organic worldview of the East in the selection of locations and arrangements in the Feng-shui system and values its relationship with nature. Therefore, the study looks at traditional architecture as a relationship between architecture and nature through various perspectives of organic relations, and this view is believed to be sufficiently valid to increase the true value of traditional architecture.
히트파이프를 이용한 항공전자장비용 냉각장치 열전달 성능 연구
박상진(Sang Jin Park),윤용훈(Yong Hun Yun),심규영(Kyu Young Sim),윤대원(Dae Won Yoon),서진국(Jin Kook Seo) 대한기계학회 2021 大韓機械學會論文集B Vol.45 No.3
항공전자장비의 고성능화가 요구됨에 따라 전자소자의 방열설계는 중요한 요소가 되어가고 있다. 특히 전자소자의 발열량을 제어하지 못할 경우 온도가 상승하여 운용 중 성능저하 및 영구적 손상이 발생할 수 있다. 본 연구에서는 항공전자장비의 방열을 위한 냉각장치를 제작하여 해석과 시험을 통해 비교하였다. 냉각장치 열전달부를 히트파이프, 알루미늄, 구리를 이용하였으며 시험 결과, 히트파이프의 최고온도가 142.3°C로 나타나 알루미늄 대비 18.0°C 낮았고, 구리 대비 12.7°C 낮았다. 온도 편차는 알루미늄 대비 27.2°C, 구리 대비 17.0°C 가량 낮게 나타나 히트파이프의 열전달 성능이 가장 우수한 것을 확인하였으며, 작동 유체의 안정성을 검증하였다. Because the high performance of avionics equipment is required, the heat dissipation design of electronic devices has become necessary. If the heating value of electronic devices is not adequately controlled, malfunction and degradation might occur during operation. In this study, we produced, analyzed, and tested cooling devices of avionics equipment for heat dissipation and compared them. In addition, we used the heat transfer block made of a heat pipe, aluminum, and copper. From the test results, the maximum temperature of the heat pipe was 142.3°C, which was 18.0°C and 12.7°C lower than those of aluminum and copper, respectively. The temperature deviation was lower than that of aluminum and copper at 27.2°C and 17.0°C, respectively. Hence, the heat pipe exhibited the best heat transfer performance. Furthermore, we verified the safety of the working fluid inside the heat pipe.