Comparative Study on Efficiencies of Naturally-Ventilated Multi-Span Greenhouses in Korea

권순홍,정성원,권순구,박종민,최원식,김종순,Kwon, Soon-Hong,Jung, Sung-Won,Kwon, Soon-Gu,Park, Jong-Min,Choi, Won-Sik,Kim, Jong-Soon The Korean Society of Industry Convergence 2017 한국산업융합학회 논문집 Vol.20 No.1

This research analyzed the ventilation effect of the multi-span greenhouse based on the types of greenhouse structure, weather conditions, and locations inside the greenhouse. To compare and analyze the ventilation effects with different types of greenhouse, the uniform environmental conditions should be selected in advance. But these factors are not controlled and require tense many precision facilities and labor forces. Thus, the CFD simulation was used for the air stream to be analyzed qualitatively and quantitatively. In addition, for the ventilation effect analysis, the TGD (Tracer Gas Decay) was used to overcome the shortcomings of the current ventilation measurement method. The calculation error of ventilation rate using TGD was low (10.5%). Thus, the TGD is very effective in calculating the ventilation efficiency. The wind direction of 90 degrees showed the best ventilation effect. The ventilation rate also decreased along the air circulation path, and the rate was the lowest around the outlet. The computed fluid method (CFD) turned out to be a power tool for simulating flow behavior in greenhouse.

토출압력 (吐出壓力) 및 호오스길이가 도달성에 미치는 영향에 관한 연구

권순홍,최규홍 ( Soon Hong Kwon,Kyu Hong Choi ) 한국농업기계학회 1982 바이오시스템공학 Vol.7 No.2

Diphenyliodonium염 존재하에서 비닐 에테르의 광양이온 리빙 중합(I)

권순홍,이연성,전현정,마석일,Kwon, Soonhong,Lee, Youngsung,Jeon, Hyunjeong,Mah, Soukil 한국섬유공학회 2002 한국섬유공학회지 Vol.39 No.4

Photo-induced living cationic polymerization of isobutyl vinyl ether (IBVE) has been newly developed in the presence of diphenyliodonium iodide (DPII). Zinc iodide was used as an activator in the polymerization reaction. A linear relationship between % monomer conversion and the number average molecular weight of the resulting polymer reveals the living nature. The increase in both the polymer yield and its molecular weight until the original monomer was exhausted reveals that the propagating cationic species have the long lifetime due to the absence of termination or chain transfer process. It became also evident that a PIBVE-based block copolymer can be obtained by the subsequent monomer addition technique from this photo-induced system. The effects of various factors such as concentrations of DPII and zinc iodide, temperature, and duration of photo-irradiation were also discussed.

고구려 ‘평양’의 변천과 전기 평양성의 위치에 관한 쟁점 검토

권순홍(Kwon, SoonHong) 한국외국어대학교 역사문화연구소 2019 역사문화연구 Vol.70 No.-

고구려의 세 번째 도성으로 알려진 평양에 관해서는 두 가지 해묵은 숙제가 있다. 하나는 427년 평양 천도 이전에 등장하는 ‘평양’의 위치이고, 다른 하나는 427년에 천도한 전기 평양성의 위치이다. 이 글의 목적은 이 두 가지 숙제를 해결하는 것이다. 먼저 전자에 대해서는 313년의 낙랑 축출을 기점으로 그 이전의 평양은 집안 지역으로, 그 이후의 평양은 현재의 평양 지역으로 비정하였다. 단, 고국원왕 13년(343년)에 등장하는 평양동황성의 위치는 알기 어려웠지만, 주목할 것은 ‘移都’와 ‘移居’의 차이를 유념하는 것이었다. 후자에 관해서는 기왕에 안학궁설, 청암리토성설, 대성구역 거점설이 제기되었는데, 안학궁설과 청암리토성설은 각각의 한계가 분명하였다. 특히, 고구려 도성의 구조를 산성+평지성으로 파악하려는 강박의 소산이었다. 이에 따라 이 글에서는 전기 평양성에는 평지 성곽이 없을 가능성과 함께 대성구역 거점설에 무게를 실었다. There are two long-standing issues regarding Pyongyang, which is known as the third royal city of Goguryeo. One is the location of Pyongyang , which appeared before the Pyongyang transfer in 427, and the other is the location of former period Pyongyang which was transferred in 427. The purpose of this article is to solve these two issues. In order to solve the former one, this article sets Pyongyang on the Jian area before the expulsion of Nangnang in 313, and Pyongyang on the present Pyongyang area after the expulsion. However, the location of the Pyongyangdonghwang fortress which appeared in 343 was hard to locate, but the difference between transfer of a royal city(移都) and transfer of a palace(移居) is worthy of notice. In order to solve the second issue, Anhak palace theory, Cheongam-ri fortress theory, and Daesung district theory were raised. The weak points of Anhak palace and Cheongam-ri theory were clear among these theories. These were especially outcome of obsession with identifying the structure of royal city of Goguryeo as a combination of mountain and flatland fortress. This article puts emphasis on the Daesung district theory and the possibility that there was no flatland fortress in the former period Pyongyang fortress.

ICT기반 관개 방법에 따른 콩의 Soil Moisture Monitoring System 개발

권순홍 ( Soon Hong Kwon ),서정덕 ( Jung Duck So ),정기열 ( Ki-yeol Jung ),이상훈 ( Sanghun Lee ),김종순 ( Jongsoon Kim ),박종민 ( Jong Min Park ),권순구 ( Soon Gu Kwon ),김동현 ( Dong-hyun Kim ) 한국농업기계학회 2017 한국농업기계학회 학술발표논문집 Vol.22 No.2

생산성이 낮은 밭작물의 안정적인 생산을 위해서는 정보통신기술(ICT)을 이용한 자동물관리 시스템의 구축이 필요하다. 본 연구에서는 콩의 생산성 향상을 위해 지표 및 지중의 용 · 배수를 자동으로 구현하도록 관개방법 별 토양수분을 측정할 수 있는 모니터링 시스템을 구축하였다. 지표관개에 의한 토양수분 함량은 68×13.5 m 크기의 토양에 토양 깊이(10, 20, 30, 40 cm)별로 토양 수분센서를 관개방법(지표점적, 스프링클러, 분수살수)에 따라 설치하였다. 설치간격은 각각 1.2 m, 10 m, 3 m로 하였다. 근권층(토양10 cm)의 토양수분 함량을 기준으로 관개시점의 수분함량을 30%로 설정하여, 이보다 낮으면 자동으로 관개되도록 시스템을 구축하고 제어 프로그램화 하였다. 지중점적관개는 30×9 m 크기의 토양에 이랑 및 고랑 하부에 20 cm 깊이로 70 cm 및 140 cm 간격으로 점적관을 각각 매설하고 토양 수분의 모니터링이 가능하도록 하였다. 지하수위제어관개는 지하수위 높이를 0.3 m와 0.6 m, 암거관 간격을 3 m와 6 m로 하여 토양수분센서를 각각 설치하여 모니터링 하였다. 지표관개의 경우 분수살수, 지표점적, 스프링클러관개 순으로 토양의 깊이에 관계없이 토양수분함량이 높았다. 지중점적관개의 경우 점적관 설치 위치 및 간격에 관계없이 토양이 깊을수록 수분함량이 높게 나타났다. 지하수위제어관개는 지하수위가 높을수록 토양수분의 변동이 적은 것으로 나타났다. 이러한 ICT기반 관개 방법에 따른 콩의 최적 물관리 시스템은 작물 생산성 향상 및 식량 자급률 향상에 기여할 것이다.

혁신 제품에 대한 거부와 수용에 관한 연구

권순홍(Soon-Hong Kwon),임양환(Yang-Whan Lim) 한국컴퓨터정보학회 2012 韓國컴퓨터情報學會論文誌 Vol.17 No.1

본 연구에서는 정보기술 혁신 제품이 출시되었을 때 소비자가 수용하는 과정에서 혁신 제품의 유용성 기대와 혁신제품에대한거부의요인에의해사용의도가형성된다는관점에서혁신제품의수용과정을연구하였다. 휴대전화사용자들 중 스마트폰을 사용하지 않는 소비자들을 대상으로 실증연구를 하였다. 연구결과, 첫째, 정보기술 혁신제품에 대한 소비자의 유용성 기대는 사용의도에 정적(+)으로 영향을 미치고, 혁신 제품에 대한 거부감은 부적(-)으로 영향을 미치며, 유용성 기대는 거부감에 부적(-)으로 영향을 미치는 것으로 나타났다. 둘째, 소비자의 혁신 제품에 대한 유용성 기대에 정적(+)으로 영향을 미치는 요인으로 사회적 요인이 있었고, 기존 제품에 대한 만족은 유용성 기대에 부적(-)으로 영향을 미쳤다. 셋째, 소비자의 혁신 제품 거부에 영향을 미치는 요인들로 소비자의 기존 제품에 대한 만족과 소요되는 노력 예상이 있었다. 이러한 연구결과들에 근거하여, 소비자가 정보기술혁신 제품에 대해 유용성을 기대하더라도 거부감을 가지고 있다면 해당 제품을 사용할 의도를 갖지 않기 때문에 이에 대한 전략이 필요하다. A study herein is carried out for acceptance procedure of innovative products in the aspect which usage intention is formed by usefulness expectation and rejection factors for innovative products during acceptance procedure of users when information technology innovative products are launched in the market. Empirical study was carried out for non-smart phone users within mobile phone users. As a result of study, firstly, usefulness expectation of users for information technology innovative products is positively (+) affecting to usage intention, while usefulness expectation was shown to be negatively (-) affecting to rejection. Secondly, social factors were found which positively (+) affect to usefulness expectation for innovative products, and satisfaction for conventional products negatively (-) affects to usefulness expectation. Thirdly, there were satisfaction and consuming effort for conventional products from consumers for the factors which affects to innovative products rejection of consumers. Based on the result of study herein, there is a specific strategy needed for information technology innovative products although consumers have expectation usefulness for the products as well as rejection which brings out to remove the intention to use the products.

온풍난방기 성능 개선 연구(Ⅰ) - 송풍방식에 따른 송풍성능 비교 -

권순홍(Soon-Hong Kwon),정성원(Sung-Won Chung),이승기(Seung-Kee Lee) 한국산업융합학회 2000 한국산업융합학회 논문집 Vol.3 No.3

This study was carried out to investigate blowing performance for blowing type in space heater. This paper present that power requirement, static pressure, total pressure and static pressure efficiency were increased in proportion to air flow rate. And in the Korean space heater, side ward blowing type was effected than downward blowing type.<br/>

변화된 세계와 철학교육의 몇 가지 이념들

권순홍(Kwon, Soon-Hong),임규정(Lim, Gyu-Jeong) 대한철학회 2001 哲學硏究 Vol.79 No.-

도성 관련 용어 검토 ― ‘도(都)’ㆍ‘곽(郭)’ㆍ‘경(京)’을 중심으로 ―

권순홍 ( Kwon Soon-hong ) 수선사학회 2017 史林 Vol.0 No.62

This article is a deliberation on the terms refer to central city of East Asia, and begins with two ideas. First idea is that the difference in terms leads to difference in meaning. Second idea is that the city is a space produced by human being as a social product. This is the conclusion after reviewing terms based on these two ideas. Do(都) means exclusive space of power by the medium of religious service. The introduction of Gwak(郭) is to protect industry which is linked to maintenance of power. Gyeong(京) is related to social status order as a governance mean. Capital city(都城) eventually means exclusive space of power considering these terms. The space of Capital city(都城) is produced by the power of king. Therefore this space can be changed over the form of king's power. That change consequently brought change in landscape and the division of the terms for space.

고구려 ‘도성제’론의 궤적과 함의

권순홍(Kwon Soon-hong) 한국역사연구회 2016 역사와 현실 Vol.- No.102

It is the general belief that the capital city of Goguryeo was a combination of a mountain fortress and a fortress constructed on plain ground. However, whether or not Goguryeo had such capital city or a system of that sort from the very beginning, or during its state-formation period, is yet to be determined. In order to determine when the Goguryeo capital city system was materially established, we shall first examine why the issue itself had never received adequate attention before. So, tracked in this article is how the notion of a Goguryeo capital city system originated in the first place, and evolved over the years. At first, during the Japanese occupation period it was the Japanese scholars who exclusively led the studies on the Goguryeo dynasty’s “Doseong” Capital city. Sekino Tadashi in the 1910s suggested for the first time the aforementioned ‘Mountain fortress/Plain fortress’ combination as the characteristic of the Goguryeo capital city system, but there was an undercurrent to that notion, which viewed the Goguryeo capital city (as well as other Korean ancient capital cities in general) as crude and underdeveloped. He viewed the ‘plain fortress’ part as a ‘palace’ rather than a fortress, and argued that Korean ancient capitals lacked the capacity of protecting the people. His such interpretation was inherited by scholars in subsequent periods, and was even renewed by Chinese scholars in the 1980s. In the so-called “Northeast Research Project” the plain fortress of the Goguryeo capital city system was viewed as a recycled version of the old Han commandery facility. According to such perspective, the Goguryeo capital city system, characterized as a combination of both mountain and plain area fortresses, was understood as a system that was established during the time of the Goguryeo state’s formation. Ironically, that kind of understanding effectively rendered further discussion of the exact time point of the capital city system’s actual emergence a seemingly lesser priority. And a fairly low view of Goguryeo and the formation of the Goguryeo state continued to be perpetuated as a result.