• 건축역사연구
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• 제12권3호
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• pp.163-179
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• 2003

The records of about 60 travel essays of the Hall of Bhaisajyaguru(Healing) Budda which was built in Chung Yang Temple passed down since 1525. The chronological change of that Hall architecture according to each period was traced upon. The building structure of the Hall of Bhaisajyaguru Budda which has a roundabout way, and 6 pillars inside, sometimes each 6 pillars inside and outside is hexagonal, one story building in Japanese colonial period(picture 3-1) or the present(picture 3-3). The panaromic picture of Chung Yang Temple shows no alterations of the layout of buildings(picture 1-1), in which the Hall of $Praj{\tilde{n}}{\bar{a}}$(般若殿), the main building in the center and the Hall of Bhaisajyaguru(Healing) Budda, three story stone pagoda, stone lighthouse in front of it became the central axis. The Hall of Bhaisajyaguru(Healing) Budda remained as it was until Japanese invasions in 1592 and 1597. However, it was greatly damaged by the flood in 1717. It was newly built by Lee Ha Gon's leading in 1717-1732. At that time, the interior design was changed. With Bhaisajyaguru(Healing) Budda, 53 Buddhas and ${\acute{S}}arira$ of Stone stupa which show itself by the flood in 1717 was located in the image of the Mountain of Chunchuk or Cheontae like Yu Jeom Temple. The doors of this Hall are located in the front and back. In the four walls each, two realistic and cubic buddhism pictures were drawn, The color of those picture was partly taken off in 1671 and repainted in 1714. The new building in 1717-1732 regained its colorful appearance. However, the names written beside each Images of Buddha disappeared. The notable remark in these records is that some of these travel essays in 17th-18th centuries was calling this hexagonal hall as the octagonal one. It is very important records because it means that before 1525 the octagonal hall might have existed. Chung Yang Temple was rebuilt between 1976 and 1985 after the destruction in the Korean War. After the records are carefully read, the full scale excavation about this historic site was not done yet. The interesting issue of the existence of octagonal building will be resolved by the full scale excavation.

• 전력전자학회:학술대회논문집
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• 전력전자학회 2004년도 전력전자학술대회 논문집(2)
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• pp.665-669
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• 2004

Generally, Slotless PM BLDC drive system is necessary that the three Hall-ICs evenly be distributed around the stator circumference and encoder be installed in case of the 3 phase motor. So, the Hall-ICs are set up in this motor to detect the main flux from the rotor, and the output signal from Hall-ICs is used to drive a power transistor to control the winding current. However, instead of using three Hall-ICs and encoder, we used only two Hall-ICs for the permanent magnet rotor position and for the speed feedback signals, and also for a microcontroller of 16-bit type (80C196KC) with the 3 phase Slotless PM BLDC whose six stator and two rotor designed. Two Hall-IC Hc and $H_B$ are placed on the endplate at 120 degree intervals, and with these elements, we can estimate information of the others phase in sequence through a rotating rotor.

• 전력전자학회:학술대회논문집
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• 전력전자학회 2003년도 추계학술대회 논문집
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• pp.132-136
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• 2003

Generally, PM BLDC drive system is necessary that the three Hall-ICs evenly be distributed around the stator circumference and encoder be installed in case of the 3 phase motor. So, the Hall-ICs are set up in this motor to detect the main flux from the rotor, and the output signal from Hall-ICs is used to drive a power transistor to control the winding current. However, instead of using three Hall-ICs and encoder, we used only two Hall-ICs for the permanent magnet rotor position and for the speed feedback signals, and also for a micro controller of 16-bit type (80C196KC) with the 3 phase PM BLDC whose six stator and two rotor designed. Two Hall-IC Hc and $H_B$ are placed on the endplate at 120 degree intervals, and with these elements, we estimated information of the others phase in sequence through a rotating rotor.

• 한국전기전자재료학회:학술대회논문집
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• 한국전기전자재료학회 2009년도 춘계학술대회 논문집
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• pp.7-8
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• 2009

Non-contact critical current measurement apparatus was developed using hall probe which measures the magnetic field distribution across the width of superconducting tape. The hall probe consists of 7 independent hall sensors which lie in a line 600 ${\mu}m$. The difference between maximum and minimum magnetic field in the magnetic filed distribution is a main parameter to determine the critical current. As preliminary research, we calculated the magnetic field intensity at the middle sensor, which is a minimum magnetic field and generated by the circular shielding current modeled by Bean model. We confirmed that there are some parameters that affect on the minimum magnetic field; the distance between superconducting layer and hall sensor, the width of superconducting tape, and the critical current distribution across the width of superconducting tape. Among these parameters, the distance between superconducting layer and hall sensor highly influences on the minimum magnetic field.

• 건축역사연구
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• 제30권6호
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• pp.71-80
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• 2021

This study tries to shed light on character and architectural features of the 2nd construction of Bunhwangsa temple in the mid-8th century. The site of Bunhwangsa Temple is divided into upper and lower areas based on retaining walls running from northwest to southeast, and the main area of the temple centered on Geumdang(the main hall) is located in the upper area. Space composition of the lower area including Wonji(a garden pond) and Gangdang(a lecture hall), is noteworthy in that Bunhwangsa Temple was constructed in a deviating way from rigorous constructional disciplines and used their space efficiently. The Geumdang in the 2nd construction was the largest worship hall with 7×6 bays. The hall was designed to divide its space into two ; the core space was surrounded by outer space. Each gap between columns in the hall was narrowed from center to outer. The main construction of the Geumdang was built as a stable structure with lead-to corridors. This was a much-advanced style than Geumdang at Hwangnyongsa Temple. The Gangdang is presumed to be a large building site as a typical Gangdang style in the Silla era. It was built in the late 9th century and was located in the northern part of the retaining walls. The composition of the middle gate and southern corridors were in double and long corridor style and they were located in front of the 2nd construction. This style coincided in the form of the architectural style of the Hwangnongsa Temple. The 2nd construction of the Bunhwangsa Temple was smaller than the Hwangnongsa Temple. However, it was a prestigious architecture.

• 전력전자학회논문지
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• 제10권2호
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• pp.109-116
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• 2005

최근 각종 산업기기 및 자동화기기에는 회전자가 영구자석으로 구성된 브러시리스 전동기의 사용이 증가하고 있다. 그러나 회전자가 영구자석으로 이루어진 BLDC전동기의 경우 회전자 위치 판별 센서는 필수 요소이다. PM BLDC 전동기의 속도제어를 수행함에 있어 기존의 엔코더와 Hall-IC 3개를 이용하지 않고, 2개의 Hall-IC로 3상 motor의 나머지 한상의 Hall-IC 신호를 추정하였다. 또한 사용된 PM BLDC motor는 고속속도를 가지는 특성을 가지고 있지만 Hall-IC를 이용하여 속초제어를 하기 때문에 속도의 오차 량이 상당히 크다는 단점을 가지고 있다. 따라서 이러한 단점을 개선하기 위해 저가의 PLL회로를 적용하였다. 또한 실험을 통하여 그 타당성을 검증하였다.

• 디자인학연구
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• 제18권1호
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• pp.125-134
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• 2005

현대 교회의 본당 공간은 비효율적으로 사용되어져 왔다. 이 연구는 단지 예배만을 위한 공간으로 존재했던 본당 공간의 다양한 활용 방안을 모색함으로써 지역사회를 위해 이 공간을 어떻게 사용해야 하는가를 제안하는 것이다. 이러한 연구는 지역사회를 위한 교회의 책임을 주장하는 현대 신학적 이론에도 그 근거를 두고 있다. 이 연구를 위해 360명의 성직자, 교인, 지역주민을 대상으로 2003년 10월부터 2004년 3월까지 설문 조사를 하였다. 이 논문의 연구 결과는 다음과 같다. 1. 성직자, 교인, 지역주민 모두는 교회가 지역 사회와 밀접한 관계를 가져야 한다고 생각하고 있었다. 2. 이를 위해 본당의 경우 예배 이외에 음악회, 극장, 공연장, 장례식, 결혼식 같은 문화적 기능을 감당 할 수 있는 복합적인 공간계획이 필요하다. 3. 새로이 교회가 신축되거나 증축될 때에는, 지역사회를 위한 봉사 기능과 함께 교회 시설을 최대한 사용할 수 있는 프로그램을 고려한 건축계획이 반영되어야 한다.

• 건축역사연구
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• 제17권1호
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• pp.85-102
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• 2008

As a result of analyzing the floor plan shown in the three drafts, there were a great deal of differences in composing the space of the inner main hall. The inner room facing to the east with the arrangement crossing the inner floor at right angles in the 'Baekdangguje Draft' faces to the south in the east or west in front of the main house thereafter. This represents that it reflects the intent of the owner of the architecture emphasizing the size increase and ceremonies of the main house in the 'ㅁ shape', which has changed to the directions of easily accommodating the Confucian ceremonial activities in the floor plan of the inner house as the size of the main house was gradually increasing from 24 sections to 30 or 38 sections. The expansion in the size of main house further divided the functions of floor into one for daily life and the other for ceremonies as well. In other words, the 30 Sections in Yijeong Draft as being the first planned draft for reconstruction had a hall for memorial services in the main hall of the inner house, whereas the 'Draft with 38 Sections' as being the second planned draft for reconstruction was planning a room with a floor (two sections of Bangdang) for memorial purpose in the back of the inner main hall. The variations in the guest house (or space for men) shown in the drafts confirms the establishment of space for men as the size of the main house increases. We can see the change that a large guest house is placed over the south and in the south and east of the main house as the number of main house increases by 30 sections or 38 sections. Especially, a guest house with a wide space in a 'ㄴ shape' is arranged from the south of main house to the east wing in the Draft with 38 Sections. In addition, the backward sections are advanced in the front and back of guest house in the drafts with 30 and 38 sections, while a back floor or a back floor connecting to the back room or sleeping room or inner house is installed in the backward sections.

• 한국문화재보존과학회:학술대회논문집
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• 한국문화재보존과학회 2002년도 제15회 발표논문집
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• pp.12-20
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• 2002

경복궁 근정전 내${\cdot}$외부의 단청 안료를 X선형광분석기와 X선회절분석기로 성분 분석한 결과, 내부에 쓰인 안료들은 현대에 많이 쓰이고 있는 인공합성된 안료들이 아닌 천연광물에서 추출한 안료들을 사용한 것임을 알 수 있었다. 즉, 녹색안료는 청동의 녹색부식물과 뇌록석을 그리고 적색의 경우는 진사를 사용했다. 외부의 경우는 인공합성된 안료들을 사용한 것임을 알 수 있었다. 즉, 황색안료는 황연, 적색안료의 경우는 연단과 석간주를 사용하였으며, 녹색 안료는 화록청과 산화크롬녹을 사용하였다. 또한 청색 안료로는 군청을 그리고 백색 안료로는 산화티탄을 사용했다.

• The Journal of the Acoustical Society of Korea
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• 제25권3E호
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• pp.95-100
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• 2006

The present study presents the design procedures and the acoustic properties of the main hall of Ansan Cultural Arts Center in Korea which has opened in 2004. The acoustic design values are compared with the measured acoustic properties of the completed multi-purpose hall. Acoustic design criteria were suggested in the design stage through the 3-dimentional computer simulations. The acoustic parameters including SPL, RT, C80, $D_{50}$M, RASTI were measured in the hall after completed. Acoustic measurements were carried out in the 40 measurement points using MLS sound source signal in 4 different sound source points. The results show the even distribution of sound levels within the 2.0dB of difference among all seats. The reverberation time of 1.66sec was measured which is similar to the objective value of 1.65 sec in empty states. It was also found that average C80 values lie in the objective extents of C80 from -1 to 3dB and average D50 value of 54 was measured. Thus, it is concluded that the hall can be used as a multi-purpose hall with a suitable acoustic conditions.