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.

조선 전기의 고구려 초기 도성(都城) 위치 비정과 그 실상

권순홍 ( Soon Hong Kwon ) 수선사학회 2015 史林 Vol.0 No.53

The determination of early Goguryeo`` capital cities was not fully conducted until the first half Joseon. The first capital city, Jolbon of Goguryeo, was determined as today``s Seongcheon, Pyeongannam-do, and its second capital city, Fortress Guknae, was determined as today``s Uiju, Pyeonganbuk-do. Doubtlessly, Jolbon and Guknae are Huanren and Jian, north of River Yalu, respectively, and this study identified the following reasons why first-half Joseon``s determination of Goguryeo capital city location was so conducted. First, the location of Jolbon was forgotten, after Goguryeo fell. But it happened that the name of the river flowing through Seongcheon was Biryu-gang, the same name as Biryu-su mentioned in the Goguryeo founding myth. Thus, Seongcheon was determined as Jolbon, and Goguryeo Fortress, west of Seongcheon, was named Fortress Heulgol associated with Fortress Heulseunggol mentioned in the myth. In the case of Fortress Guknae, today``s River Hun, Yeomnansu, was wrongly identified as River Aihe, based on historical data to the first half of Joseon. On top of such identification, Fortress Guknae was identified as a location not far away from the northeast of the merging point of River Yalu and River Aihe. Thus, Goryeosa could express Uiju as Fortress Guknae. On top of this, Donggukyeojiseungram wrongly identified the boundary of Fortress Guknae as Fortress Guknae. These errors led to Fortress Guknae being identified as Uiju. The reason why Seogcheon was identified as Jolbon after all was that the river, running through Seongcheon, happened to have the same name as Biryusu mentioned in Goguryeo founding myth, leading to such misconception. The reason why Uiju was identified as Fortress Guknae was attributed to the combined errors of wrongly recognizing Yeomnansu as River Aihe, and of misreading the boundary of Fortress Guknae as Fortress Guknae. These misconceptions and errors could hardly hide certain intentions.

애플 Bonjour 프로토콜을 위한 간편한 challenge-response 인증

권순홍(Soonhong Kwon),이성범(Sungbum Lee),송영준(Young-Jun Song),이종혁(Jong-Hyouk Lee) 한국통신학회 2018 한국통신학회 학술대회논문집 Vol.2018 No.6

우리나라와 일본의 지역약국 약사서비스 관련 공적보험급여의 범위 및 수가 비교

권순홍(Sun-Hong Kwon),손은혜(Eun-Hae Sohn),김혜린(Hye-Lin Kim) 대한약학회 2021 약학회지 Vol.65 No.1

In Korea, the service fee reimbursed to community pharmacists by national health insurance (NHI) is limited to traditional dispensing and managing of medication. On the contrary, health insurance fees for various pharmaceutical care services are reimbursed in Japan, which has a similar healthcare system to that of Korea. This study aims to compare the fees and types of reimbursable activities covered by NHI between Korea and Japan. The unit prices and coverage conditions for each medical fee-related community pharmacist were examined and extracted from the reimbursement schedule tables from NHI. The Japanese fee was converted into Korean won by the Purchasing-Power-Parities exchange rate. We compared the dispensing fees according to change of prescription days and several additional payment conditions such as night-time, narcotics prescriptions, and medication for infant/child. In Japan, various fees for pharmacists’ advanced pharmaceutical care activities were reimbursed comprehensively, not merely for traditional dispensing. The average fee dispensed for a 3-day prescription in Korea was about 60.8% of that in Japan and estimated to 33.6~60.5% under various additional payment conditions. Therefore, this study suggests that Japan s cases need to be reviewed and benchmarked and that we need to consider how to reflect them in Korea’s reimbursement scheme.

새로운 유형의 컴퓨터의 시장실패 요인에 관한 구조적 연구

권순홍(Soon-Hong Kwon),임양환(Yang-Whan Lim) 한국컴퓨터정보학회 2013 韓國컴퓨터情報學會論文誌 Vol.18 No.10

본 연구에서는 기존에 존재하는 제품을 대체하고 보완하는 기능을 가진 새로운 유형의 컴퓨터가 시장에서 받아들여지지 않아 실패하는 요인을 연구하였다. 제품실패의 원인을 소비자가 제품의 가치를 부정적으로 지각하는 것에 두고, 가치 지각에 영향을 주는 요인들을 소비자가 제품을 사용하여 얻게 되는 혜택과 제품을 사용하는데 소요되는 비용으로 구분하여 영향관계를 파악하였다. 넷북을 대상으로 실증 연구한 결과 소비자가 신제품의 가치에 대해 부정적으로 지각하는 것은 사용의도에 부정적으로 영향을 미치는 것으로 나타났다. 그리고 소비자가 새로운 유형의 컴퓨터에 대해 지각하는 비용은 신제품의 가치를 부정적으로 지각하는데 유의하게 영향을 미치는 것으로 나타났다. 다만 소비자가 새로운 유형의 컴퓨터에 대해 혜택을 부정적으로 지각하더라도 이는 가치를 부정적으로 지각하는데 영향을 미치지 않았다. This study examined the factors of failure of new-type computer which has a functions of replacing and supplementing of existing product by being unaccepted by market. Placing the reason of market failure in a customer's negative perception of the value of the product, influential relationship was explored by distinguishing the factors that influence value perception between benefit of use of product and the cost of using product. As a result of this empirical research on netbook, a customer's negative perception of the value of new product had an negative influence on intention of use. And a customer's perceptional cost of new-type computer had an significant influence on negative perception of the value of the new product. However, even if a customer perceived benefit of new-type computer negatively, this did not impact on negative influence.

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/>

『三國史記』의 도성 관련 용어 분석

권순홍(Kwon Soon-Hong) 고려사학회 2021 한국사학보 Vol.- No.82

이 글의 목적은 최근 제기된 ‘도성’ 지칭 용어 교체에 대한 비판이다. 도성은 왕조국가의 중심지를 가리키는 용어로 사용된다. 단, 글자에 포함된 ‘城’ 때문에, 방어시설을 상상하게 함으로써, 성을 세우지 않았던 유목사회 중심지 혹은 성을 세우기 이전의 중심지 등을 가리키는 용어로는 적절하지 않다는 비판이 있었다. 따라서 한국 고대 중심지의 경우, 『삼국사기』에 나오는 王都・王京 등의 용어로 교체하자는 제안이 있었다. 이 글은 『삼국사기』에서 사용된 왕도・왕경 등 도성 관련 용어들에 대한 분석을 통해 각각의 용어가 갖는 의미와 그 차이를 도출함으로써, 이를 반박한다. 각 용어가 가리키는 대상이 도성의 구성 요소 가운데 하나, 도성의 물리적 공간 중 일부 등 각기 다르다는 사실을 통해, 추상 공간으로서 도성을 가리키는 용어로서 적절하지 않다는 점을 밝힌다. This article aims at criticizing the recently raised term replacement for “royal city(Doseong 都城)”. It has been used as a term referring to the center of the dynasty. However, there have been criticisms that it is not appropriate to refer to the center of a nomadic society in which no wall was built or to the center before the wall was built, because the letter “Seong 城” included in the term makes it possible to imagine a defense facility. Therefore, there has been a proposal to replace the center of ancient Korea with terms such as Wangdo 王都・Wanggyeong 王京 in Samguk sagi 三國史記. This article refutes the proposal by deriving the meaning of each term and its difference through analysis of terms related to the royal city, such as Wangdo・Wanggyeong in Samguk sagi. Through the fact that one term refers to one of the constituent elements of the royal city and the other refers to a part of the physical space of the royal city, this article clarifies that the two terms are not appropriate as terms referring to the royal city as an abstract space.

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.