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고정익 무인비행기를 이용한 수계 내 녹조 모니터링 연구
박정일(Jung-Il Park),최승영(Seung-Young Choi),박민호(Min-Ho Park) 한국지능시스템학회 2017 한국지능시스템학회논문지 Vol.27 No.2
본 연구는 지속적으로 수계 내 녹조를 모니터링할 수 있도록 고정익 무인비행기에 멀티스펙트럴 센서를 탑재시켜 금강유역의 하천을 촬영하고, NDVI 분석을 수행함으로써 수계환경을 효율적으로 관리하는 것을 목적으로 하고 있다. 연구대상지역은 금강 유역의 백제보 인근이며, 연구수행에 사용된 데이터는 녹조 발생 초기인 2016년 7월에 촬영된 영상이다. 데이터 처리과정으로서, Pix4D 소프트웨어를 이용하여 NDVI 영상을 생성하는 작업을 수행하였다. 생성된 NDVI 영상을 클로로필 실측값과 비교하여 관계식을 도출하고 영상 수치 변환 작업을 수행하였다. 그 결과 실측값이 반영된 클로로필 영상을 추출할 수 있었으며, 앞으로 수계환경관리를 위한 녹조 관측 및 모니터링, 그리고 재해예방 측면에서 무인비행기를 이용한 클로로필 정보 취득은 매우 유용할 것으로 판단된다. The primary purpose of this study is to determine NDVI analysis methodologies for green algae monitoring system. A fixed wing UAV integrated with multi-spectral sensor has been adopted to capture the images along the watershed in Gumgang River. The study area was near the Baekje water reservoir and the images aws captured on July 2016. Pix4D Mapper Pro was used to process the captured images. Through the comparison actual chlorophyll measurement values with NDVI output image, empirical formula was suggested and geo-loctiaonal conversion was carried out. As a result of this study chlorophyll image set applied to actual measurement values was able to extracted. For the efficient management of green algae, its monitoring and prevention in terms of disaster management, gathering chlorophyll information using UAV is very beneficial.
박정일 ( Jung Il Park ),장병기 ( Byoung Ky Chang ) 한국경제통상학회(구 한국경상학회,한국국민경제학회) 2013 경제연구 Vol.31 No.2
본 연구는 환노출퍼즐에 대한 재고찰과 함께 금리노출을 분석하기 위하여 OLS, EGARCH-M-GED, 지연효과를 고려한 EGARCH-M-GED 등 3가지 모형을 이용하여 환노출과 금리노출을 추정하였다. 또한 환노출과 금리노출의 영향요인을 확인하기 위하여 기존 연구에서 흔히 사용한 2단계 추정법 외에도 System SUR를 적용하여 비교분석하였다. 분석결과에 따르면 외환위기 이후에 환노출 기업 및 금리노출 기업의 수가 상당히 증가하였으며 외환위기 전에는 양의 환노출 기업이 많았으나 외환위기 이후에는 음의 환노출 기업이 압도적으로 많아졌다. 외환위기 이전에는 수출비중이 환노출 계수와 무관하였으나 외환위기 이후에는 수출비중이 환노출 계수에 유의한 정(+)의 영향을 주었다. 한편, 외환위기 이전에는 부채비율이 금리노출계수와 무관하였으나 외환위기 이후에는 부채비율이 금리노출계수에 유의한 부(-)의 영향을 주는 것으로 나타났다. 이는 외환위기 이후 주식시장이 보다 정보 효율적으로 바뀌었기 때문일 것이다 The main purpose of this study is to identify the exchange rate exposure and interest rate exposure of KOSPI firms and analyze the effect factors of the exposures. To investigate the exposures OLS, EGARCH-M-GED, and EGARCH-M-GED with delay effect were employed. In the meantime, for an analysis of effect factors, System SUR method as well as 2-step method was performed. We find that the number of the firms with exchange rate exposure and interest rate exposure greatly increased after the Korean financial crisis. Futhermore, in the case of exchange rate exposure, its influence changed from a positive to a negative after the Korean financial crisis. In the case of the influence of export share on exchange rate exposure and of debt ratio on interest rate exposure, there were no significant results in the period before the Korea financial crisis, but most models showed significant results in the period after the Korean financial crisis. This means that the market reflects microscopic information more efficiently after the crisis
朴正一(Park Jung-Il) 동북아시아문화학회 2009 동북아 문화연구 Vol.1 No.21
As a result of having considered the magazine name of the women's magazine of Taisho period, I was able to discover various characteristics. For example. There is overwhelmingly much use of the kanji word with 98 examples (68%) by the magazine name. Meanwhile, there is the use of the katakana word of foreign origin for letter notation such as "woman thyme", and I diversify lexically, and there being it is thought about with influence by the character of the Taisho democracy. In addition, as for the factor that accelerated the birth of the girl magazine, that interest for the home training rose that woman education was begun is raised on a national scale. The example only for an example has sum total 109 examples (75%), and there is variety of the magazine name. I understand that the magazine name which is the symbol of the women's magazine has been regarded as important by state of things. Many magazines were launched for Taisho period, and it was ceased to publish again. A new magazine name appeared in the degree, but thinks the magazine name to be have been reflection of the times of the Taisho democracy. The figure which finished a new Japanese image for women reflected it conspicuously in the world of the women's magazine.
Speed Controller Design of a Two-Inertia Motor System Using Weighted ITAE Index
박정일(Jung-Il Park) 제어로봇시스템학회 2009 제어·로봇·시스템학회 논문지 Vol.15 No.6
In a two-inertia motor system with flexible shaft, a torsional vibration is often generated as a quick speed response is required. This vibration makes it difficult to achieve a quick response of speed and disturbance rejection. The objective of this paper is to provide a systematic analysis and design of the three kinds of speed controllers such as I-P, I-PD, and state feedback control by using the weighted ITAE performance index. Some simulation and experiment results verify the effectiveness of the proposed design.
朴正一(Park Jung-Il) 동북아시아문화학회 2011 동북아 문화연구 Vol.1 No.29
As a result of having considered the city area of the Japanese leased territory of Pusan I obtained the result such as the result next which I analyzed mainly on an ancient map of Pusan about open Korea period of Pusan. was enforced by a top‐down method by the then Japanese Government. I think that the form of the town is based on city structure and a grid in succession to the descent from Japanese castle town and was formed. Of course there is neither the castle nor the castle tower, but, on the other hand, I establish stem mountain god Corporation in the top of the mountain behind of the central exclusive management of the city in Japan and do it with a psychological centripetal tendency place, and the street in the city does the form of the straight line basic tone for strategic defensive purposes there not a way seen in the neighborhood of the existing Torai prefecture which there was in the neighboring. In addition, what the dark factory of the objective hue of the military demand posts you in the safe place of the city, and locate a Japanese mounting a horse corps in the border with an outside Settlement territory thinks that there is a clearly strategic intention. In addition, I am big, and the existing city area en larges even a mask of the mass on the scale with a merger on later Korea day, and combination of sea power and the land power is completed as a point binding a sea route and a land route together than the defensive purpose, but it is aimed for the military strategy that is going to enlarge penetration in the continent via a peninsula. The city area gradually understands what deepened the density ad s a place of the life of people to live in there as a point transporting such military and supplies while spreading.