• 보존과학회지
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• 제30권1호
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• pp.39-53
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• 2014

궁중장식화는 궁궐의 안팎을 장식했던 것으로 실용적이고 기능적인 역할을 하였다. 특히 일월오봉도와 해반도도는 왕의 권위와 수복을 기원하여 제작된 대표적인 궁중장식화 이다. 그러나 현존하는 일월오악도와 해반도도 중 19세기 이전에 제작된 것으로 명확한 제작시기와 배설위치 등을 확인할 수 있는 것은 없다. 이러한 점에서 최근 공개된 국립중앙박물관 소장 일월오봉도와 해반도도는 보존과학적인 연구를 통해 그 제작시기와 배설위치 그리고 제작기법 등을 확인하게 된 것으로 그 의의가 크다고 할 수 있다. 복원과정에서 확인한 2곡병 형태의 양면 장황과 장자문의 귀갑창은 지금까지 궁중장식화에서 보고되지 않았던 첫 연구 사례이다. 또 원형 장황 복원에 의한 실측과 현존하는 궁궐 건축물의 대조 그리고 의궤 자료의 조사 등으로 창경궁영건도감의궤(1834년)에 기록된 함인정에 배설되었던 것임을 밝혀냄으로 19세기 초반의 일월오봉도와 해반도도 연구에 기여할 수 있다.

• 한국인터넷방송통신학회논문지
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• 제23권6호
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• pp.103-108
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• 2023

아날로그 자연사 표본정보 전달의 한계점을 디지털 형태의 정보로 전달하여 관람자에게 흥미와 재미를 부여하고 표본전시활용의 디지털 디오라마 활용방안에 대한 방향성을 제시한다. 이번전시는 일만원권 지폐 드라마, 신문기사등 각종 매체를 통해 대중에게 친숙한 그림인 일월오봉도를 직접 현실에서 실감할수 있도록 미디어아트로 재현하였다. 해, 달 다섯 개의 산봉우리, 한쌍의 폭포, 그리고 네그루의 소나무등이 좌우대칭으로 그려져 있는 조선시대 작품이다. 자연의 생동감으로 표현하기 위해 해와 달의 상징을 빛의효과등으로 연출하여 몰입도를 극대화하고 산봉우리 아래에는 파도의 출렁임, 두루미 움직임, 사슴, 모시나비, 잉어등 동물을 새로 삽입하고 행동을 부여하여 자연과 그 속에 뛰어노는 생물의 생동감을 연출하고 미디어아트 병풍을 스크린으로 제작하여 연출하였다. 또한 작품소개 및 작품속 생물 관련 정보는 QR 코드를 통해 제공하였다. 결론으로 관람자에게 기존 아날로그 표본 전시의 정보전달 단점을 2D, 3D디지털 형태의 표본 전시효과 및 관람자에게 일월오봉도의 왕권의 상징성을 미디어아트로 표현하고 자연사 콘텐츠와 결합하여 예술과 자연사의 만남을 연출하였다.

• 전기학회논문지
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• 제56권5호
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• pp.990-992
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• 2007

The purpose of this study is to develop a practical gait-event detection system which is necessary for the FES (functional electrical stimulation) control of locomotion in paralyzed patients. The system is comprised of a sensor board and an event recognition algorithm. We focused on the practicality improvement of the system through 1) using accelerometer to get the angle of shank and dispensing with the foot-switches having limitation in indoor or barefoot usage and 2) using a rule-base instead of threshold to determine the heel-off/heel-strike events corresponding the stimulation on/off timing. The sensor signals are transmitted through RF communication and gait-events was detected using the peaks in shank angle. The system could detect two critical gait-events in all five paralyzed patients. The standard deviation of the gait events time from the peaks were smaller when 1.5Hz cutoff frequency was used in the derivation of the shank angle from the acceleration signals.

• 헤리티지:역사와 과학
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• 제55권1호
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• pp.243-263
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• 2022

조선 왕실에서는 영원불멸한 왕의 존재와 권위를 나타내고자 일월오봉도로 병풍을 만들어 왕의 공간마다 설치하였다. 일월오봉도는 궁궐의 가장 대표적인 의장물로 알려져 있지만, 다양한 형태로 제작했던 병풍의 실체에 대해서는 제대로 연구된 바가 없다. 이것은 현재 전하는 유물이 기록과 일치하지 않은 경우가 많기 때문이다. 본 글에서는 의궤를 중심으로, 왕실 의례에 사용했던 일월오봉도 병풍의 다양한 생김새와 장황 재료에 대해 살펴보았다. 그리고 그동안 제대로 알려지지 않았던 일월오봉도 병풍의 원형과 변형 과정까지 함께 고찰하였다. 의례용으로 제작한 왕실의 병풍들은 예식과 법도에 따라 엄격하게 제작되었고, 각각이 갖는 위상에 따라 장황에 사용하는 재료 또한 차등을 두었다. 궁궐의 정전(正殿)과 빈전(殯殿), 혼전(魂殿), 진전(眞殿)에 설치했던 오봉병과 궁중연향을 위해 제작했던 오봉병은 생김새와 크기는 모두 다르지만, 병풍을 꾸미는 비단 회장(回粧)은 일치하였다. 대체로 초록색 비단으로 가장자리를 두르고, 그 위에 꽃문양의 금박을 장식하였다. 쪽풀로 염색한 초록색 비단은 원료를 수입해야 하는 값비싼 붉은 색 비단을 대신하였으며, 영조22년 '문단(紋緞) 금지 조치' 이후에는 무늬없는 초록색 평직 비단을 사용했다. 그나마 비단에 올린 금박 첩금으로 인해 사대부가의 병풍과 차별되는 궁중 의례용 병풍의 장식미를 더하였다. 일제강점기 동안 방치되었던 조선왕실의 병풍들은 1960년대부터 유물을 관리하는 차원에서, 보존처리가 이루어졌다. 그 과정에서 장황이 개장(改粧)되었고, 원형의 모습을 많이 잃게 되었다. 이것은 전통의 장황 문화가 단절된 것이 가장 주된 원인이었다. 과거에는 고증의 부족으로 문화재를 온전하게 보존하는 데 한계가 있었다면, 지금부터는 각 분야에 축적된 연구 성과를 바탕으로 고증을 철저히 하고, 문화재의 수리 이력에 대한 정보까지 체계적으로 보존하고, 관리하는 노력이 필요할 것이다.

• 건축역사연구
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• 제29권2호
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• pp.39-52
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• 2020

Seonjeong-jeon, the semi-great hall in Changdeok Palace, was constructed in a highly formal and conservative style and accommodated official ceremonies. However, the contemporary modification of the building has distorted or eliminated features including the two side doors on the front, the floor coverings, and the throne base (Jwa-tap) that consisted the most significant part of the throne. Seonjeong-jeon originally had three doors that stood between each pair of columns on the front side, respectively. The courtiers accessed the building through the side doors, while the central door was exclusively designated for the king. However, the renovation in 1999 ignored the political context of the architectural form of the building and changed the side doors into windows, damaging the traditional structure inherited from the early Joseon Dynasty. Although the building currently has traditional wooden floor structure (Woomul-maru), it was originally covered with square brick tiles (Bang-jeon) before the Japanese occupation, following the customs of early Joseon Dynasty. The throne was placed to the north of the central door and consisted of the throne base and a decorative roof (Dang-ga). A canvas (Jang-ja), which featured the royal symbolic painting of Sun, Moon, and Five Peaks, was also installed between the two columns that connected the base and the roof. Nevertheless, only the columns and the blank canvas remain nowadays after the removal of the base.

• 대한방사선기술학회지:방사선기술과학
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• 제16권2호
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• pp.51-60
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• 1993

The $CaSO_4$ : Tm-PTFE TLDs have been prepared and their energy dependences of TL intensity to X-rays have been investigated. The dose dependence of the prepared $CaSO_4$ : Tm-PTFE TLDs is linear within the range of $100{\mu}Gy-10Gy$ for X-rays and gamma rays. The spectral peaks of TL emission spectrum are at about 350nm and 475nm. The fading rate of the main peak has been found to be about 2% for 30days when $CaSO_4$ : Tm-PTFE TLDs stored in the dark room at room temperature. The energy dependence of $CaSO_4$ : Tm-PTFE TLD has been compensated by combining the TL responses of one bare TLD and five TLDs filtered with 1.0mm Al, 0.2mm Cu, 0.5mm Cu, 1.5mm Cu, 2.0mm Pb respectively. The determined correction coefficients for filter combination are $a_0=0.078,\;a_1=-0.009,\;a_2=-0.235,\;a_3=0.588,\;a_4=0.568\;and\;a_5=0.180$ respectively. From the results of these studies, the prepared TLD badge of six dosimeter combination may be useful as a radiation dosimeter for personal and environmental monitoring.

• 대한의용생체공학회:학술대회논문집
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• 대한의용생체공학회 1996년도 추계학술대회
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• pp.240-242
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• 1996

Use of electrical stimulation for diagnosis and treatment of pyhsiolgocial impairment on the auditory system was reported by many researchers since 1800. Unfortunately, there were no standard methods or theoretical bakground for choosing stimulus conditions because of the lack of understanding on the transmission of sound through the auditory pathways. Therefore, if we could find the mechanisms of normal and abnormal functions for the system objectively, it may be possible to establish the conditions for the appropriate treatment This study was devised with three experimental conditions of electrical stimulation(0.1, 1, and 10mA) to verify the effect of electrical stimulation on the auditory system. ABRs and ECochGs were obtained from 3 Guinea Pigs before and after each stimulation, and five parameters were extracted from ABR and ECochG waveforms. The results showed that the mean differences of the first peaks of ABR, I, before and after all the stimulus conditions were significant at the significant level of p<0.05. Also, amplitude of ECochGs peak(AP) showed higher degrees of differences for the electrical stimulation than that of ABRs. Based on the results of this experiment establishment of an electrical model which characterizes the auditory system could be achieved by computer simulation. This will lead to the design of most accurate model for the real auditory system, which provide the quantitive information regarding diagnosis and treatment.

• Journal of KIEE
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• 제11권1호
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• pp.32-40
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• 2001

This paper presents the detailed statistics on radiation field signatures associated with multiple-intracloud lightning discharges. A transient signal recording system was used to measure the electric and magnetic fields produced by lightning flashes. The measurements were made in th summers of 1995 through 1999, and the location of the observation station was in Inchon on the coast of the Yellow Sea in Korea(37$^{\circ}$25'N, 126$^{\circ}$ 39'E). Most of lightning flashes typically contains between two and five strokes. The individual intracloud stork radiation fields were the bipolar pulse. On the average, the ratio of the peak of the second stroke to the first stroke peak was 75.1$\pm$40.1% for the negative, and a fraction of the subsequent stroke peaks were higher than the first stroke peak. The greater the number of the subsequent stroke order, less time separations between strokes were produced. The mean of the depth of the dip was 81.2$\pm$27.9% for the positive polarity and 75.9$\pm$24.4% for the negative. The depth of the dip increased for the positive bipolar pulses and decreased for the negative as the number of the stroke order increased.

• 제어로봇시스템학회논문지
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• 제11권7호
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• pp.578-586
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• 2005

Air mattress is now used widely to prevent the pressure ulcer by reducing the localized pressure peaks. The pressure control method based on the anthrophometric model of an air-cell mattress developed in this study is presented. The air-cell mattress has 18 cylindrical air cells made of porous material allowing air leakage. Even though the air leakage can contribute to reducing the development of pressure ulcer by lowering the pressure peak, temperature and humidity, the air pressure changes with time and the desired air-cell pressure has to be determined as an optimal value for each user. To select the desired air-cell pressure, we first divide the parts of the body into four sections such as head, trunk, hip, and leg. Then, the pressure of each section grouped with air-cells is calculated from the weight of each part estimated from the individual height and body weight. Air supply system for the air-cell mattress is implemented by using four electronic solenoid valves and an air compressor, and it is driven by a real-time microcontroller. We experimented with five subjects of the contact pressure on skin. The experimental results show that the proposed air-cell mattress is effective for the prevention of the pressure ulcer.

• 한국지하수토양환경학회지:지하수토양환경
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• 제18권4호
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• pp.19-31
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• 2013

To figure out the decay characteristics of naturally occurring radionuclides, eight sampled groundwaters from a monitoring borehole having high levels of uranium and radon concentrations in a two mica granitic area have analyzed by liquid scintillation counters (LSC) for over 1 year. In December 2011, three groundwater samples (DJ1, DJ2, DJ3) were obtained from each aquifer system located at -20 m, -40 m, -60 m of the monitoring borehole below the ground surface, respectively. Five samples (DJ4, DJ5, DJ6, DJ7, DJ8) were additionally gained from each aquifer positioned -20 m, -40 m, -60 m, -100 m, -105 m of the borehole in February 2012, respectively. Temporal variation characteristics of uranium and radon concentrations have showed over maximum 2.1 times and 1.4 times fluctuations of the values in the same sampling intervals over time, respectively. The intervals of -40 m and -105 m in the borehole have the highest values of uranium and radon concentrations, respectively. This may imply that the concentrations of naturally occurring radionuclides such as uranium and radon in groundwater have been changed over time and indicate that the qualities of groundwaters from the aquifers developed at each interval in the borehole are different each other. This discrepancy, moreover, could be caused by behaviour differences between uranium which is in ionic status having a half life of 4.6 billion years and is transported along with the flowing groundwater, and radon which is in gaseous status having a 3.82 day's half life in the aquifer systems. Physicochemical characteristics of groundwaters from the aquifer systems could be identified by the results of the on-situ measuring items such as pH and Eh, and the major ionic contents. The CPM values of eight groundwater samples analysed by LSC over one year have shown not to follow the theoretical decay curve of the radon. The CPM values of the samples have ranged from 2 to 7.5 after it had passed two months when the theoretical CPM values of the radon started zero since the initial analysis. Alpha and beta particle spectrums have shown the peaks of radium-226, however they have not revealed any peaks of radon and it's daughter products such as polonium-218 and 214, bismuth-214 for the late stage of the analysis. This implies that the groundwater from the borehole may contain radium-226 having a half life of 1,600 years which decays continuously.