장서각소장 왕실보첩류의 종류와 현황

성봉현(Sung, Bong-hyun) 계명대학교 한국학연구원 2011 한국학논집 Vol.0 No.44

수증기 개질 반응기의 효율 향상을 위한 버너 구조 연구

성봉현(Sung, Bong-Hyun),한재찬(Han, Jae-Chan),신장식(Shin, Jang-Sik),이승영(Lee, Seung-Young),양혜경(Yang, Hye-Kyong),신석재(Shin, Seok-Jae),박종원(Park, Jong-Won),김두훈(Kim, Doo-Hoon) 한국신재생에너지학회 2007 한국신재생에너지학회 학술대회논문집 Vol.2007 No.06

가정용 연료전지 수소 공급용 연료변환 장치는 LNG, LPG를 이용하여 수소를 제조하는 수증기 개질과 제조된 합성가스의 정제공정으로 저온/고온 전이 반응 및 선택적 산화 반응을 포함하게 된다. 이중 전체 연료변환 장치 효율은 공정중의 유일한 흡열 반응인 수증기 개질 반응기 구조와 반응열 공급용 버너에 의해 결정된다. 반응열 공급용 버너의 형식, 구조 등의 변수를 통해 본 연구진에 의해 개발된 반응구조의 최적 열원 공급 방식을 산출하고자 하였다. 이를 위하여 본 연구에서는 원통형 개질 반응기에 적용 가능한 버너의 구조, 토출 각도, 토출구의 수 등의 버너 설계 변수가 버너의 성능의 미치는 영향에 대하여 연구하였다. 연구에 사용된 버너는 적용 연료의 혼합 특성을 증가시키기 위해 혼합공간을 충분히 유지 하였으며, 버너의 구조와 연소용 기체의 토출각 및 토출구의 위치 변화를 통한 불꽃의 형태를 변화 시켜 반응기 내의 온도 분포 특성을 비교 분석하였으며, 분석 결과에 의해 원통형 개질 반응기에서 최대 효율을 가지는 버너의 구조로부터 수증기 개질 반응을 평가하였다.

구면좌표계식 기구를 이용한 인공치아의 3차원 측정시스템 개발

맹희영,성봉현,Maeng, Hee-Young,Sung, Bong-Hyun 한국생산제조학회 2010 한국생산제조학회지 Vol.25 No.6

With recent increased demand for reverse engineering in dental machining, the 3D laser scanner is widely used for inspection of artificial pontic. In order to overcome the optical drawback of laser scanner, such as irregular scatter, direction of beam, and the influence of surface integrity, it is developed in this study a new 3D measuring system for artificial pontic using spherical coordinate system mechanism by point laser sensor, which keeps the direction of beam normal to surface consistently. The comprehensive integrated system is established to evaluate the improvement of accuracy with data acquisition system. The experimental results for measuring a master ball and pontic models shows the excellent form accuracy and repeatability compared with conventional apparatus. Also, these results shows the possibility to apply this system for the measuring purpose within 0.05mm accuracy of pontic at the sharp edge or margin contour, which was difficult to measure at the conventional systems.

구면좌표계식 기구를 이용한 인공치아의 3차원 측정시스템 개발

맹희영(Hee-young Maeng),성봉현(Bong-Hyun Sung) 한국생산제조학회 2010 한국생산제조학회지 Vol.19 No.4

가정용 연료전지 1Nm³/hr급 천연가스 연료처리장치의 운전 특성

신장식(Shin, Jang-Sik),신석재(Shin, Seock-Jae),이승영(Lee, Seung-Young),양혜경(Yang, Hye-Kyong),성봉현(Sung, Bong-Hyun),김두훈(Kim, Doo-Hoon),박종원(Park, Jong-Won) 한국신재생에너지학회 2007 한국신재생에너지학회 학술대회논문집 Vol.2007 No.11

In this study, we investigated operating characteristics of natural gas fuel processor for polymer electrolyte membrane fuel cells (PEMFCs). The fuel processor consists of a natural gas reformer, a water-gas shift reactor, a heat-exchanger and a burner, in which the overall integrated volume is exactly(exceptionally) small, namely, about 10L except outer insulation. The producted hydrogen is 1Nm³/hr and the maximum thermal efficiency is {sim}76%(low heating value) at full operating load. A compact and highly efficient 1Nm³/hr class natural gas fuel processor was developed at UNISON is an advantage for application in residential PEMFCs co-generation systems.

조선후기 친족결합 양상 : 충청도 지역 족계를 중심으로 Focusing on a local kinship fraternity in Chungcheong-do

成鳳鉉 한국고문서학회 2002 古文書硏究 Vol.21 No.-

조선사회에 있어서 친족은 중요한 사회수단이며, 사회구성 요소의 하나이었다. 그런데 친족은 세대가 지나면서 자연히 확대될 수밖에 없고, 그렇게 되면 친족의 결속은 자연 소원하게 되었다. 이러한 친족을 결속하기 위하여 조선후기 유행하기 시작한 것이 族契이다. 조선후기 친족의 결속을 이해하기 위하여 충청도 지역에서 조사된 족계 자료에 나타난 몇 가지 양상과 족계유행의 배경을 살펴 보았다. 족계는 대종계와 소종계로 나뉘는데, 소종계는 봉사대상의 현손들이 入契한 경우이고, 대종계는 遠祖를 제사하기 위한 것이었다. 족계에는 친손, 외손, 서자, 서손 까지도 참여하였다. 그러나 17세기 이후부터는 외손의 참여가 점차 배제되었으나, 그럼에도 소수이기는 하나 조선후기까지 외손이 친족으로 참여하였다. 그리고 족계의 참여는 성인이며 호주이었으나, 미성년의 자손이 참여 하였고, 父子가 함께 참여하기도 하였다. 족계의 정기회는 일년에 봄과 가을에 하였고, 정기회 때에 묘제를 지내고, 講信會라 하여 '立議'를 익히게 하였다. 정기회에 불참자와 입의를 준수하지 않는 족계원에 대해서는 강력하게 처벌하는 조목을 두어 친족의 결속을 강화 하였다. 조선후기에 족계가 유행하게 된 배경은 첫번째로는 종법질서의 정착에 따른 제사의 일반화이고, 둘째로는 조선후기에 이르러 증가된 친족의 파별의 결속을 위한 것이었으며, 마지막으로는 조선후기에 戰亂, 仕宦, 婚娶 등으로 친족들이 여러 곳으로 분산 거주하게 되자 이를 결속하기 위하여 실시한 것이다. In Joseon, consanguinity was an important social unit and one of components of society. Therefore, a person was considered social individual simply and one of the clans he belonged to at the same time. At this point, we call clan consanguinity, who closely related to him in a family tree and lived with him in the same area, not referring to whole clan group to which he belonged. However, small consanguinity groups became larger and brought the decline of family bond as generations went by. The weakened bond of consanguinity needed a systematic tool to strengthen the solidarity in the Joseon society where consanguinity functioned as a social unit. The solidification of Sung Confucianist order in late Joseon also wanted consanguinity which centered on the agnate. From the reason of this necessity in late Joseon society, a kinship fraternity began to be popular. The following are the several aspects of consanguinity formation in late Joseaon through the documents on the kinship fraternity in Chungcheong-do after the seventeenth century. The kinship fraternity is divided into Daejong fraternity for distant ancestors and small-scale Sojong fraternity branching off from Daejong; the first is for holding a ceremony for the repose of ancestors before the great-great- grandparent, and great-great-grandsons organized the second. In the kinship fraternity, grandsons, grandsons of daughters, even sons by a concubine, and grandsons by a concubine participated. Although few grandsons of daughters participated in the fraternity with the society turning to agnate-centered after the seventeenth century, some of them joined in the kinship fraternity as a consanguinity even in late Joseon. In general, the person should be an adult and householder for joining the kinship fraternity. However, sons under age or father and son sometimes joined it. The regular meeting of the kinship fraternity was held twice in spring and fall a year, an ancestral rite was held before the grave in the meeting. After the rite, people read and acquired 'Ipui' (regulations of the fraternity) in a Gangsinhoi meeting to strengthen the bond of kinship. There was a provision to punish a member of the fraternity severely for not participating in regular meetings and not observing the regulations. This kind of punishment regulation of the fraternity suggests that the kinship fraternity was a tool to unite consanguinity in late Joseon. One of the reasons which the kinship fraternity became popular in late Josean resulted from the generalization of a memorial serve with the settlement of Jongbeop order in which they thought much of agnate kinship order. That is, the eldest son was supposed to hold a ceremony for the repose of his ancestors and therefore, people formed the kinship fraternity to hold the ceremony together. Second, they organized the kinship fraternity to prevent themselves from be estranged from relatives, since the split branches of clan increased naturally in late Joseon. Finally, kinship families spread over many different areas and their social movement was activated because of wars, government service, or marriage. The kinship fraternity served as a measure to bind the kinship families together.

포인트 레이저 센서를 이용한 구면좌표계식 3차원 형상측정시스템 개발

맹희영,성봉현 한국공작기계학회 2004 한국공작기계학회 추계학술대회논문집 Vol.2004 No.-

Laser scanner are getting used for inspection and reverse engineering in industry such as motors, electronic products, dies and molds. However, due to the lack of efficient scanning technique, the tasks become limited to the low accuracy purpose. The main reasons for this limitation for usefulness are caused from the optical drawback, such as irregular reflection, scanning direction normal to measuring surface, the influence of surface integrity, and other optical disturbances. To overcome these drawback of laser scanner, this study propose the mechanism to reduce the optical trouble by using the 2 kinds of rotational movement axis and by composing the spherical coordinate to scanning the surface keeping normal direction consistently. So, it could be designed and interfaced the measuring device to realize that mechanism, and then it could acquisite the accurate 3D form cloud data. Also, these data are compared with the standard master ball and the data acquisited from the touch point sensor, to evaluate the accuracy and stability of measurement and to demonstrate the implementation of an dental tooth purpose system.