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토양 수분 모니터링용 마이크로파 라디오미터 수신기 설계
손홍민,박홍균,Son, Hong-Min,Park, Hong-Kyun 한국전자통신학회 2014 한국전자통신학회 논문지 Vol.9 No.2
본 논문은 토양에서 복사되는 마이크로파 대역의 미약한 열잡음 전력을 수신하여 토양 수분 함유량의 변화를 실시간으로 원격모니터링이 가능한 L-Band 마이크로파 라디오미터를 설계하는 내용에 관하여 기술한다. 토양 수분 함유량 0%~50%의 측정범위와 최대 오차 2%의 목표 성능을 달성하기 위해 토양 수분함유량에 따른 토양의 복사특성을 연구 및 목표 사양을 도출하였으며, 이를 바탕으로 도출된 사양을 만족시키는 마이크로파 라디오미터의 수신기를 설계 및 제작하였다. 제작된 수신기는 주파수 1390MHz, 대역폭 40MHz으로 50dB의 시스템 이득과 1.54dB의 NF를 가지며, 최대 0.313K, 평균 0.19K의 수신감도를 갖는다. The development process of a L-Band microwave radiometer for remote sensing of soil-moisture are described in this paper. Achieving the development aim of the measurement accuracy within 2% for soil moisture content of 0~50%, the requirements and specifications of the microwave radiometer and its receiver are drawn. The receiver with high gain, high sensitivity is designed and implemented to satisfy these requirements and specifications. The receiver has the bandwidth of 40 MHz, the system gain of 50 dB and the sensitivity of average value 0.19 K, maximum value 0.313K at 1390 MHz.
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마이크로파 라디오미터 기술을 응용한 인체 감지 센서에 관한 연구
손홍민,박홍균,Son, Hong-Min,Park, Hong-Kyun 한국전자통신학회 2015 한국전자통신학회 논문지 Vol.10 No.3
본 논문에서는 마이크로파 라디오미터의 기술을 응용한 수동형 마이크로파 인체 감지 센서를 제안한다. 제안된 센서는 고정된 배경 물체로부터 수신되는 복사전력의 인체에 의한 미약한 변화를 측정하여 감시 공간내의 인체를 감지한다. C-band 마이크로파 라디오미터를 설계 제작하여 인체에 의한 수신 복사전력의 변화를 측정하고 그 결과를 분석하여 제안한 센서의 유효성을 평가한다. In this paper, we propose a passive microwave sensor for detecting human body using microwave radiometer technologies. The proposed sensor detects human body by measuring the change of the received radiation power from fixed background object due to human body. A C-band microwave radiometer is designed and implemented. The received radiation power changes due to human body is measured by the C-band microwave radiometer, and the effectiveness of the proposed sensor is evaluated by the measurement result analysis.
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김익희(Kim Ick Hee),이계승(Lee Kye Seung),박홍균(Park Hong Kyun) 한국철도학회 2010 한국철도학회 학술발표대회논문집 Vol.2010 No.7
다목적 화차는 기존 평판화차 및 컨테이너 화차에 탈부착이 가능한 수송용기를 장착할 수 있도록 하여 컨테이너 및 무개화차 화물을 수송하는 화차를 의미한다. 본 연구는 탈부착식 수송용기 및 다목적 화차의 실질적인 적용 효과를 높이기 위해 품목별 물동량 및 화차운행횟수를 분석하고 투입 가능 구간 선정 및 운영방안을 검토하였다. 다목적 화차는 계절별, 품목별 급격한 수요 변동으로 인한 무개화차 활용도 저하의 문제점을 해결하고 화차의 운행 효율 및 활용도를 높임으로써 원활한 물류수송에 기여할 것으로 기대된다. Multi-purpose freight car is very useful to overcome the unbalance between freight demand and freight car supply. it means removable container is the auxiliary device to make flat car and container and it will be able to transport the container and flat freight. The study is analyzed the freight car operation frequency and freight volume and researched the efficient operation plan. The multi-purpose freight car will contribute in improved the seasonal and the item demand fluctuation and solved the problem of decrease utilization of the open freight car.
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朴鴻均 中央醫學社 1961 中央醫學 Vol.1 No.9
The majority of clinical asthenopia might be attributed to the imbalance between the relative convergence and the relative accommodation. It will considerably be significant to determine the two function in the asthenopic patients. The author attempt to establish the normal data’s on these two functions related in the 53 healthy normal Koreans using phorometer. The data’s obtained was compared with the results using haploscope by the other authors and it was rioted that the results of this method was nearly similar with the results of haploscope.
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稀有한 乳頭周圍血管吻合과 白內障을 合倂한 無脈症이 一例
朴鴻均 中央醫學社 1964 中央醫學 Vol.7 No.4
A case of pulseless disease was reported here, A woman aged 17 who had been suffering from occasional attacks of fainting, head ach, dizziness and loss of vision was admitted to the Dept, of Ophthalmology, Chonnam University Hospital, and had been treated symptomatically under diagnosis of a pulseless disease for a month with no effects. Finally, the cataracts were extracted with visual improvement from vision 0.02(N. C.) to 0.2 with +10 D. in the both eyes. The first examination revealed peculiar circum-papillary anastomossis of the both retinal vessels, paralytic mydriasis, accommodative paralysis, and zonular cataracts in the both eyes, with deficit of pulseless on the both upper extremities.
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朴鴻均 中央醫學社 1961 中央醫學 Vol.1 No.9
Eighty-two tonographic traces in the 68 eyes of 37 normal persons and 25 tonographic traces in the 23 eyes of 17 clinically diagnosed glaucomatous patients were carried out successfully using hand holding Schi?tz tonometer. A nd the usefulness of this method was discussed according to the following results obtained. Average C value was 0. 271 cu. mm/min. /mm Hg. (range 0. 12-0-49), the average F value was 3.255 cu. mm/min. (range 1. 29 ,-6.77) and the average original intraocular pressure (Po) was 16.691 mm Hg. in the normal eyes. Only 3 eyes showed less than border line (C=0.15) in which 2 cases were 100 or more in the ratio of Po and C. In the glaucomatous eyes including one case of considerably improved after having operation, the average C value was 0.096 (range 0.02-0.16-0.23), the average Po was 37.12. Four eyes of these showed between 0. 12 and 0. 15, and only 3 eyes showed over 0. 15 in C value. An average 1.95mm Hg. of intraocular pressure was noted to be decreased after tonographic traces in the 36 fellow eyes in the normal persons. Twenty-six of 36(72.2%) fellow eyes showed decreased F value and 10 eyes of them (27.7%) showed increased F value in the normal persons. On the other hand, only one of six fellow eyes of the glaucomatous patients showed increased F value. All of the glaucomatous eyes showed 100 or more in the ratio of Po and C. (Po/C) while 7 of 82 normal eyes showed 100 or more in the same ratio.
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강신복,박홍균,이재정 師範大學 體育硏究所 1995 서울大學校 體育硏究所論集 Vol.16 No.2
The purpose of this study was to develop an evaluation scale for the affective domain of physical education. This scale was intended to be a more valid, reliable, and simple one than the current scale. The existing literature on physical education evaluation served as the basis of the scale development. The scale was composed of 5 affective domains of physical education: participation, responsibility, cooperation, independence, and obedience. The scale was subjected to two phases of validity test and reliability test, respectively. The results showed that the scale not only had on appropriate content validity, but also had a high intra-(.91) and inter-reliability (.79). Thus, it can be concluded that the scale is valid and reliable in evaluating affective domains of physical education.
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