Landscape Ecological Analysis of Surface Runoff Reduction Capacity from Time Series Landscape Change - The lower Reaches of the Jungrang Stream -

Jina Ku,Junghwa Ra,Jinhyo Kim,Ohsung Kwon 전북대학교 휴양및경관계획연구소 2016 휴양및경관연구 (J East Asian Landscape Studies) Vol.10 No.1

Rainfall infiltration velocity into the surface of the earth is influenced by time sequential change of the urban surface spatial structure following urban expansion, and is the key factor in determining runoff discharge. In this regard, a comprehensive assessment and understanding of surface runoff associated with land cover change, as well as the changed structure of the landscape, is required to establish landscape planning. Sustainable development, planning and maintenance of the green space inside the city, based on results of the above, are a fundamental countermeasure for relieving fragmentation of the urban green space and increasing urban flood damage, directly or indirectly. In this study, we conducted analysis of landscape structure and change of Surface Runoff Reduction Capacity (SRRC) using the land cover maps from 1975 to 2000 at the lower reaches of the Jungrang stream (LRJS). The results are expected to provide baseline data for sustainable landscape planning that is ecologically healthy and can improve SRRC during torrential rains. The results of this study are as follows. Analysis of the results showed that land cover type underwent a remarkable change in terms of the total area of farm and urban types from 1975 to 2000. The total area of farm decreased by approximately 27.05% during the 25 years, while that of urban increased by approximately 25.61%. In this regard, the results of the landscape structure assessment using FRAGSTATS showed reciprocal tendencies, which intensified fragmentation of the landscape, as measured by all 6 of the selected factors, including LPI, NP, PD, LSI, AI and PLADJ. The Runoff Curve Number (CN) value steadily increased in the results of the time series landscape change assessment of the SRRC from 1975 to 2000. Based on analysis of the changed area associated with SRRC classes, the high SRRC class 1 area showed a steady decrease in accordance with the progression of the time series land use change associated with urban development.

Effects of gamma-irradiation on intracellular proliferation of Toxoplasma gondii RH techyzoites

Jina KOOK(국진아),Sung-Hee OH(오성희),Chong Ku YUN(윤종구),Jong-Yil CHAI(채종일) 대한기생충학열대의학회 1995 The Korean Journal of Parasitology Vol.33 No.3

중등학교 진로전담교사 직무별 중요도-실행도 차이 분석(IPGA)을 통한 진로전담교사 지원 방향 연구

계진아(Jina Kye),구장회(Jang-hoe Ku),이민욱(Minwook Lee) 한국진로교육학회 2020 진로교육연구 Vol.33 No.1

본 연구는 중학교 및 고등학교 진로전담교사의 직무에 대해 인식한 중요도와 실행도 수준을 분석하여 진로전담교사의 원활한 직무 수행을 위한 지원 방향을 모색하였다. 최종 분석 대상은 2018년에 실시한 진로교육 현황조사의 중학교 진로전담교사 400명, 고등학교 진로전담교사 370명이었다. 진로전담교사의 12개 직무에 대한 중요도와 실행도 인식 수준의 학교 유형간 차이를 살펴본 결과, 9개의 직무에서 학교 유형 간 중요도 인식에 대한 차이가 있는 것으로 나타났고, 실행도는 10개의 직무에서 학교 유형 간 차이가 있는 것으로 나타났다. 진로전담교사의 직무에 대한 중요도-실행도 차이 분석(Important-Performance Gap Analysis: IPGA) 결과, 모든 학교 유형에서 진로전담교사의 직무 개선을 위하여 ‘학교 진로교육 기획 및 편성’, ‘진로 · 진학 관련 학생상담’ 등 4개의 직무에 집중이 필요한 것으로 나타났다. 아울러 진로전담교사의 직무 개선을 위한 지원 우선순위를 살펴본 결과, 중학교, 일반계고 및 특성화고에서 진로 · 진학 관련 학생상담 직무가 1순위로 나타났다. 이러한 결과를 바탕으로 진로전담교사 직무에 대한 인식 현황과 직무 개선을 위한 지원 방향을 논의하였다. This study investigated the importance and performance on tasks of career teachers in secondary school, and find out the support direction for career teachers to perform better their tasks. 400 middle school career teachers and 370 high school career teachers completed a questionnaire in the 2018 Career Education Status Survey. As a result of examining the differences among the school types of importance and performance awareness level on 12 tasks of career teachers, there was a difference of importance among school types in 9 tasks, and the difference of performance was found in 10 tasks. According to the importance-performance gap analysis (IPGA) on the tasks of career teachers, there is need to be concentrated on follow four tasks in all school types: ‘School Career Education Planning and organization’; ‘Student Counseling for Career and Academic Transition’ etc. In addition, as a result of examining the priorities for improving tasks for career teachers, the counselling task related to career and academic transition was the first priority in all school types. Based on these results, we discussed the current status of awareness on tasks of career teachers and the supporting direction for improving their tasks.

Comparison of Digital PCR and Quantitative PCR with Various SARS-CoV-2 Primer-Probe Sets

( Changwoo Park ),( Jina Lee ),( Zohaib Ul Hassan ),( Keun Bon Ku ),( Seong-jun Kim ),( Hong Gi Kim ),( Edmond Changkyun Park ),( Gun-soo Park ),( Daeui Park ),( Seung-hwa Baek ),( Dongju Park ),( Jih 한국미생물생명공학회(구 한국산업미생물학회) 2021 Journal of microbiology and biotechnology Vol.31 No.3

The World Health Organization (WHO) has declared the coronavirus disease 2019 (COVID-19) as an international health emergency. Current diagnostic tests are based on the reverse transcription-quantitative polymerase chain reaction (RT-qPCR) method, which is the gold standard test that involves the amplification of viral RNA. However, the RT-qPCR assay has limitations in terms of sensitivity and quantification. In this study, we tested both qPCR and droplet digital PCR (ddPCR) to detect low amounts of viral RNA. The cycle threshold (CT) of the viral RNA by RT-PCR significantly varied according to the sequences of the primer and probe sets with in vitro transcript (IVT) RNA or viral RNA as templates, whereas the copy number of the viral RNA by ddPCR was effectively quantified with IVT RNA, cultured viral RNA, and RNA from clinical samples. Furthermore, the clinical samples were assayed via both methods, and the sensitivity of the ddPCR was determined to be equal to or more than that of the RT-qPCR. However, the ddPCR assay is more suitable for determining the copy number of reference materials. These findings suggest that the qPCR assay with the ddPCR defined reference materials could be used as a highly sensitive and compatible diagnostic method for viral RNA detection.

대전광역시 월평공원 내 탐방로 훼손실태 및 관리방안

Soonju Lee,Yeonho Yu,Jina Ku,Junghwa Ra 전북대학교 부설 휴양및경관계획연구소 2015 휴양및경관연구 (J East Asian Landscape Studies) Vol.9 No.2

본 연구는 대전광역시 서구에 위치한 월평공원 내 탐방로를 대상으로 탐방로의 훼손현황, 주연부 식물상을 조사하여 훼손유형에 따른 관리방안을 도출하여 보다 쾌적한 도시자연공원을 조성하는 데 필요한 기초자료를 제시하고자 수행하였다. 결과를 요약하면 다음과 같다. 탐방로 폭 조사 결과 평균 폭은 3.5m이었다. 탐방로 훼손유형별로는 노면분기형이 2회(4.76%)로 가장 낮은 빈도를 보였으며, 노폭확대형이 3회(7.14%), 분기샛길형 4회(9.52%), 급경사형 5회(11.90%), 노면세굴형과 암반노출형이 각각 6회(14.29%), 노면침식형 7회(16.67%), 수목뿌리노출 9회(21.43%)로 나타났다. 즉, 2.07㎞의 탐방로 구간에서 총 훼손 발생 지역이 42곳으로서 탐방로의 훼손이 심각한 것으로 나타났다. 또한 탐방로 주연부에서 총 51과 111속 138종의 식물종이 확인되었으며, 귀화율은 12.4%, 도시화지수는 5.9%로 나타났다. 탐방로 주변으로 확산되는 훼손의 진행단계와 범위를 파악하기 위하여 환경 피해도 조사 결과, 환경 피해도 0~2등급은 나타나지 않았다. 3등급은 훼손유형 1개와 훼손지역 2곳, 4등급은 훼손유형 3개와 훼손지역 8곳으로 조사되었으며, 5등급의 경우 훼손유형 6개와 훼손지역 4곳, 6등급은 훼손유형 6개와 훼손지역 2곳으로 조사되었다. 암반지역은 훼손유형 2개와 훼손지역 2곳으로 나타났고, 포장지역은 훼손유형 2개와 훼손지역 12곳으로 나타났다. 종합적으로 볼 때, 월평 공원의 탐방로의 훼손상태는 심각한 수준이다. 특히 월평공원은 접근성이 뛰어나 이용객이 꾸준히 늘어나고 있으므로 조속한 대책이 강구되어야 한다. This study concerns a trail in Wolpyeong park in Seogu, Daejeon City; it aims to present basic data necessary for creating a more pleasant urban nature park by investigating the status of damage to the trail and flora in the ecotone and then devising restoration plans depending on the types of damage. The results of this study are as follows. Our measurement showed that the average width of the trail was 3.5m. Regarding the types of damage to the trail, we found, in ascending order, two cases of road divergence (4.76%), three cases of path widening (7.14%), four cases of diverging side roads (9.52%), five cases of steep sloping (11.90%), six cases of road scouring (14.29%), six cases of bedrock exposure (14.29%), seven cases of road erosion (16.67%), and nine cases of tree root exposure (21.43%). In sum, a total of 42 seriously damaged trail segments were found within a 2.07 km section of the trail. Additionally, in total, 51 families, 111 genera, and 138 species of flora were identified in the ecotone of the trail. The naturalization index and urbanization index were measured at 12.4% and 5.9%, respectively. We examined the degree of environmental damage to determine the phase and range of deterioration that has spread around the trail. The degree of environmental damage was absent between grades 0 and 2. Grade 3 had one type of damage and two damaged areas; grade 4 had three types of damage and eight damaged areas; grade 5 had six types of damage and four damaged areas; and grade 6 had six types of damage and two damaged areas. The bedrock area had two types of damage and two damaged areas, whereas the pavement area had two types of damage and 12 damaged areas. Overall, the damage to the trail in Wolpyeong Park was found to be serious. In particular, considering that easy access to Wolpyeong Park has attracted an increasing volume of visitors, countermeasures should be devised quickly.

Experimental infection of murine splenic lymphocytes and granulocytes with Toxoplasma gondii RH tachyzoites

Jong-Yil CHAI(채종일),Jina KOOK(국진아),Sang-Mee GUK(국상미),Young-Pyo CHANG(장영표),Chong Ku YUN(윤종구) 대한기생충학열대의학회 1997 The Korean Journal of Parasitology Vol.35 No.2

Karyotypes of Pneumocystis carinii from Korean Rats

Sung-Tae Hong(홍성태),Beyong Il Kim(김병일),Weon-Gyu Kho(고원규),Jae-Ran Yu(유제란),Jina Kook(국진아),Jong-Yil Chai(채종일),Chong-Ku Yun(윤종구),Soon-Hyung Lee(이순형) 대한기생충학열대의학회 1992 The Korean Journal of Parasitology Vol.30 No.3