상습침수 농경지의 토지평가를 위한 고도별 침수 잠재성 분석 - 경상남도 창녕군 이방면을 대상으로 -

박인환,장갑수,서동조,Park In-Hwan,Jang Gab-Sue,Seo Dong-Joe 한국조경학회 2005 韓國造景學會誌 Vol.33 No.2

A large scale of riverside rearrangement has been recently done in the major rivers in Korea. So inundation possibility in agricultural area closed by these rivers has been higher than the possibility a few years ago. However, land use in this area has not been adjusted to a change of this situation near the rivers. Therefore, when typhoon or heavy rain is happened on this area, it can cause a large damage in agricultural area. This study analyzed inundation potentiality in agricultural area at Ibang-myeon, Changnyeong-gun, Kyeongnam-province, Korea by using the logistic regression model and the piecewise regression model. The first thing we did was to transfer the inundation area per elevation to the accumulated inundation area per elevation. This accumulated inundation area per elevation as an distribution function could be described by the logistic regression model(LRM), and piecewise regression model(PRM) could make it much more accurate to analyze the inundation area per elevation. As a result, the regression models derived from LRM and PRM showed $R^2$ over 0.950. The models derived from LRM and PRM in Ibang-myeon noted that frequently inundated area(FIA) was shown up to 12.12m in elevation, and potentially inundated area(PIA) was shown up to 14.60m in elevation. In FIA, regular agricultural activity would be impossible. And It would be not easy to continue the regular agricultural activity in PIA. So, this land should be rearranged to be used for a buffer zone for ecosystem protection, landscape conservation and things like that in riverside.

사람피부섬유아세포에서 산화적 스트레스에 대한 항산화 활성을 가진 spermidine의 억제효과

In-Hwan Park(박인환),Moon-Moo Kim(김문무) 한국생명과학회 2011 생명과학회지 Vol.21 No.5

Spermidine은 spermine의 전구체로 역할을 하는 putrescine로부터 합성되는 polycation의 한 형태이다. 최근에 spermidine는 수명연장에 중요한 역할을 하는 하나의 polyamine으로 알려져 있다. Hydroxyl radical, superoxide 및 hydrogen peroxide와 같은 활성산소(ROS)는 노화뿐만 아니라 다양한 병원성 과정에서 관여한다고 보고되고 있다. DPPH radical, H₂O₂ 및 hydroxyl radical에 대한 spermidine의 소거활성과 산화적 스트레스와 관련된 DNA oxidation에 대한 보호 효과가 in-vitro에서 평가되었다. Spermidine은 500 μM 이상에서 DPPH radical와 H₂O₂에 대한 소거 효과를 보여주었다. 특히 활성산소종 중에서 spermidine는 hydroxyl radical에 대한 효과가 탁월하였다. 뿐만 아니라, spermidine는 500 μM에서 DNA oxidation에 대해서도 뚜렷한 보호 효과를 나타내었다. 더욱이 사람피부섬유아세포에서 superoxide dismutase와 같은 항산화 관련 단백질의 발현이 대조군과 비교 시 spermidine 존재 하에 증가하였다. 이상의 결과로부터 spermidine은 암, 노화 및 염증을 포함하는 활성산소와 관련 있는 질병들을 예방하기 위한 항산화제로 이용될 수 있을 것이다. Spermidine is a ubiquitous polycation that is synthesized from putrescine, which serves as a precursor of spermine. In recent years, spermidine was found to be a polyamine that plays an important role in longevity. Reactive oxygen species (ROS) such as hydroxyl radical, superoxide and hydrogen peroxide have been shown to be involved in various pathogenic processes as well as aging. The direct scavenging effect of spermidine on DPPH radical, H₂O₂ and hydroxyl radical, and its protective effect against DNA oxidation related to oxidative stress were evaluated in vitro. It was observed that spermidine exhibits scavenging activities on DPPH radical and H₂O₂ above 500 μM. Spermidine was especially effective in exerting a scavenging activity on hydroxyl radical. In addition, spermidine at 1000 μM showed a clear protective effect against DNA oxidation. Furthermore, the expression level of antioxidant enzymes such as superoxide dismutase in humam dermal fibroblasts increased in the presence of spermidine compared with blank group. These results suggest that spermidine can be used as an antioxidant to prevent ROS-related diseases including inflammation, cancer and aging.

도시자연공원의 주요 등산로 훼손실태 분석 - 대구광역시 앞산공원을 대상으로 -

박인환,이혜영,조광진,장갑수,Park, In-Hwan,Lee, Hea-Young,Cho, Kwang-Jin,Jang, Gab-Sue 한국조경학회 2010 韓國造景學會誌 Vol.38 No.3

본 연구는 대구광역시의 대표적 도시자연공원인 앞산도시자연공원의 주요 계곡인 큰골, 안지랑골, 매자골의 주요 등산로를 대상으로 등산로의 훼손현황, 주연부 식물상을 조사하여 훼손유형분류에 따른 복원방안을 도출하여 보다 쾌적한 도시자연공원이 되도록 기초자료를 제공하고자 실시하였다. 앞산을 중심으로 조사한 3개의 등산로의 총 9km, 69개 지점에서 등산로 상태를 조사한 결과, 평균등산로 폭이 2.0~2.6m, 뿌리노출이 2,108m(23.4%), 암석노출이 3,199m(35.5%), 노면침식이 3,280m(36.6%), 토양경도가 강견($2.5kg/cm^2$)으로 4,841m(53.8%), 훼손발생지역이 83곳으로 훼손이 심각한 것으로 나타났으며, 등산로 주연부에서 확인된 식물상은 총 79과 206속 306종이었다. 귀화율과 도시화지수는 인간간섭의 정도와 강도를 나타내는 하나의 지표로서 큰골이 각각 7.0%, 5.5%, 안지랑골이 각각 8.3%, 4.5%, 매자골이 각각 8.6%, 6.2%, 전체가 각각 7.8%, 8.3%로 나타났다. 등산로 주변으로 확산되는 훼손의 진행단계와 범위를 파악하기 위한 환경피해도는 5등급 이상의 비율이 큰골이 24.3%, 안지랑골이 17.1%, 매자골이 21.6%로 큰골이 피해가 가장 심했으며, 큰골, 매자골, 안지랑골의 순으로 피해가 심하게 나타났다. 본 조사구간의 환경피해도 결과를 보면 등산로는 이용과밀로 인한 침식과 뿌리노출, 암석노출의 훼손현상이 일어나면서 등산로의 훼손이 점점 심각해지고 확산될 수 있다는 의미로 해석할 수 있다. 따라서 현재의 상태를 방치할 경우 침식이 가속화 될 뿐 아니라 뿌리노출, 암석노출, 노폭확산 등의 피해가 잇따르므로 침식구간의 정비가 시급한 것으로 판단된다. Many trails have been built and utilized in each sub-basin of Apsan Park. This study focused on the conditions and the present flora of several overused trails within three basins called Kun-Gol, Anjiroung-Gol, and Meaja-Gol in Apsan Park. There are two purposes for this study. The first is to make a plan for restoration by classifying the type of damage to these overused trails. The second is to provide preliminary data for reestablishing a more pleasant urban nature park. As a result of the survey, the average length of these trails is 9.0km and mean width is 2.0 to 2.6m. 2,108m of the sections studied(23.4% of the total) had exposed root, 3,199m of the sections studied (35.5% of the total) had exposed rock, 3,270m of the sections studied(36.6% of the total) displayed damaged pathways, and 4,841m of the sections studied (53.8% of the total) had higher soil hardness. Eighty-three areas of deterioration were found and there has been extensive property destruction. As an indication of human disturbances, the Naturalization Index and Urbanization Index appeared as: Kun-Gol, 7.0%, 5.5%; Anjiroung-Gol, 8.3%, 4.5%; Meaja-Gol 8.6%, 6.2%; in total, 7.8%, 8.3%. As a method of checking the level and extent of the damage process, an impact rating classification was used at each point on the trails. Kun-Gol had the highest rating and Anjiroung-Gol had the lowest rating in impact rating classification. With the impact rating classification, it was found that each trail would continue to worsen, meaning that roots and rocks are more likely to be further exposed and the trail width will continue to widen through overuse. An actual plan for reparations and restoration of the trails is needed through further study.

지역축제의 교육적 활용 - 2010 청도반시축제를 중심으로 -

박인환,김민수,조광진,김혜영,Park, In-Hwan,Kim, Min-Soo,Cho, Kwang-Jin,Kim, Hea-Young 경북대학교 농업과학기술연구소 2012 慶北大農學誌 Vol.30 No.2

This study was investigated for the local festival's educational impact. And take advantage of local festivals and educational effectiveness of the educational factors that affects, local festivals, depending on the type, application factors and intention to revisit whether there are differences in educational projects have identified the effect. So take advantage of the educational needs of local festivals for the purpose is to recognize that. To this end, 2010 Cheongdo persimmon festival's visitors were surveyed. How to analyze the descriptive statistics and factor analysis, reliability analysis, multiple regression analysis, ANOVA was used. The results of multiple regression analysis, community education of local festivals, discretionary activities, and agricultural education in educational projects in local festivals factor effects showed positive effects. The results of ANOVA, type programs and performances of the factors exhibition programs, experiential programs were no significant differences between groups. Of intention to revisit, "will revisit" and "I do not know", "will not visit" and "I do not know" and "will not visit" was no significant difference between the groups. These results, focusing on the needs of local festivals take advantage of the educational implications for the proposed recognition.

공간구문론과 ERAM모델을 활용한 대학 캠퍼스 내 '소로' 특성 분석

박인환,정보광,장갑수,Park, In-Hwan,Jeong, Bo-Kwang,Jang, Gab-Sue 한국조경학회 2007 韓國造景學會誌 Vol.35 No.4

Side roads on campus areone of the important factors affecting campus landscape and quality. So far, side roads have appeared irregularly and have been main causes for disrupting the campus landscape. The purpose of this study was to investigate side roads in three university campuses using Space Syntax and ERAM model and to find some typical characteristics of the campus in three universities: Kyungpook National University, Yeungnam University, and Keimyung University. Kyungpook National University and Yeungnam University had 68 and 64 places respectively showing a high frequency of side roads, while Keimyung University had only 13 side roads, a much lower frequency. Side roads, surveyed on site, appeared to be concentrated in some regions, and side roads were analyzed to have different frequencies and location depending on their specific function and characteristics, though roads have similar sizes and areas.

SPECIAL ISSUES-한전의 해외사업 추진현황-세계 최고의 글로벌 에너지 그룹으로의 힘찬 도약 -

박인환,Park, In-Hwan 대한전기협회 2007 전기저널 Vol.- No.361

무궁화 위성 관리 운용을 위한 관제소 설비 및 운영 기술

박인환,김낙명,유은영,Park, In-Hwan,Kim, Nak-Myeong,Yu, Eun-Yeong 대한전자공학회 1994 전자공학회지 Vol.21 No.6

치과대학 교육 과정에 도입을 위한 연구(1)

박인환,Park, In-Hwan 대한치과의사협회 1976 대한치과의사협회지 Vol.14 No.4

조류 생장/소멸 수치모의를 위한 감쇠계수 등가추적법 적용

박인환,송창근,Park, In-Hwan,Song, Chang-Geun 한국수자원학회 2018 물과 미래(한국수자원학회지) Vol.51 No.7

제 5회 Civil Engineering Conference in the Asian Region (CECAR) 2010, 참가기

박인환,Park, In-Hwan 한국수자원학회 2010 물과 미래(한국수자원학회지) Vol.43 No.8