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Analysis of eco-corridor usage status of mammals in Odaesan National Park
Sang Jin Lim,Ki Yoon Kim,TaeJun Lee,Woo Chan Lim,Ji Hong Min,Hyeong Woo Ji,Baek Soon Choi,Tae Il Kim,Hyo Nam Kim,Hee Bok Park,Yung Chul Park 강원대학교 산림과학연구소 2017 강원대학교 산림과학연구소 학술대회 Vol.2017 No.11
We investigated species, ecological pathway type, and mammal size using two eco-tunnels from trail-camera data. The analyses of the camera data showed that 12 mammalian species from 8 families of 5 orders used Jin-gogae eco-corridor (bridge type) and 14 mammalian species from 9 family 5 orders were found at Odaesan eco-corridor (tunnel type). At both eco-corridors, water deer used eco-corridor most frequently, and then secondly racoon dog did. The analyses by mammal size (small, medium, and large) showed that large-sized mammals were found in high ratio at the bridge type of the eco-corridors. In case of medium-sized mammals, utilization ratio of the tunnel-typed corridor was 42%, whereas that of the bridge-typed corridor was 24%, showing 1.8 times higher usage.
Analysis of monitoring Road-kill in Odaesan National Park
Sang Jin Lim,Ki Yoon Kim,Woo Chan Lim,Hyeong Woo Ji,Baek Soon Choi,Tae Il Kim,Hyo Nam Kim,Ji Hong Min,Hey Ri Kim,Eui Kyeong Kim,Yung Chul Park 강원대학교 산림과학연구소 2017 강원대학교 산림과학연구소 학술대회 Vol.2017 No.11
We surveyed mammalian roadkill at the National Route 6 (Jin-gogae to Songcheon, 18㎞) and a local road 446 (Odaesan National Park office to Sangwon-temple, 12㎞) in Odaesan National Park. Data of the surveys were analyzed by year, month, and species. Roadkills of 226 individuals were found at the survey areas. Of them, the road-killed 131 mammal individuals, 44 bird individuals, 40 reptile individual and 11 amphibian individuals were found during the survey period. High ratio of the road-kills was observed in mammals than the other animals. Among mammalian species, high ratio of the road-kills was observed in squirrels. There were road-kills of three endangered species, containing otters, yellow-throated marten and leopard cats. According to the analyses of annual road-kills, roadkills of 104 cases were occurred and highly frequent in 2014, following by roadkills of 81 cases in 2015, and then those of 41 cases in 2016. Most ases of the roadkills occurred in summer (June to September). The results will contribute to establishing management for reduction of roadkill in Odaesan National Park.
임장섭,정우성,이진 木浦大學校 工業技術硏究所 1995 工業技術硏究誌 Vol.5 No.-
The tree observation tehnique is being highlighted as a reasearch area for deterioration of insulation because of high-voltage power system. Many reseachers make efforts to develop not only diagnosis of aging state but also detection of defects in the initial stage from preventive diagnosis system. For the measurement of tree, image processing is actively studied as a experimental technique of electrical tree, because the conventional directed visual impossible to analyze on the tree degradation area, progressed direction, and tree pattern etc. In this paper, we have developed the tree measuring system using image processing. By using an image processing technique, the tree features which appear immediately after the tree initiation as well as changes in the configuration of the tree can be easily measured and observed than the conventional visual methods.
임철수,류정호,엄명도,황진우,김예은 한국대기환경학회 2004 한국대기환경학회지 Vol.20 No.2
Diesel engines which emit a lot of PM and NOx have been known as a main air polluter. Especially, diesel particulate matters (DPM) including black smoke are hazardous air pollutants to human health and environment. The nations retaining advanced engine technologies have reinforced emission regulations. To meet these regulations diesel engine manufacturers have developed low-emission diesel engines, aftertreatment equipments, alternative fuel technologies and so on. In this study, particle number concentrations characteristics according to particle size and engine driving conditions were analyzed when these low-emission technologies were applied. There was a tendency of increasing particle number concentrations from heavy-duty diesel engines with increasing engine rpm and load rate. In the cases of CDPF (Catalytic Diesel Particulate Filter), CNG (Compressed Natural Gas) engine and ULSD (Ultra Low Sulfur Diesel) more than 99% of particle number concentration were removed.
임진관,이송우,감상규,이동환,이민규 한국환경과학회 2005 한국환경과학회지 Vol.14 No.1
Adsorption characteristics of toluene vapor, which is one of important source of volatile organic compounds (VOCs), by activated carbon were investigated using a fixed bed adsorption column. The operating parameters such as breakthrough curve, adsorption capacity. mass transfer zone (MTZ), and length of unused bed (LUB) were studied. The experimental results showed that the breakthrough time decreased with increasing inlet toluene concentration and gas flow rate. MTZ and LUB increased with the increase of inlet concentration, gas flow rate, and particle size of activated carbon. The adsorption capacity increased with the increase of inlet toluene concentration, while it decreased with increasing particle size. However, it was kept at constant value regardless of the increase of gas flow rate. Adsorption isotherm of toluene vapor could be represented by the Freundlich adsorption equation fairly well. From the adsorption experiments using some VOC gases such as toluene, xylene, butyl acetate. butanol and acetone, it was also found that the adsorption capacity was higher in the case of gas with higher boiling point and lower vapor pressure.
고교생의 논리적사고력과 과학탐구 기능 사이의 상관관계에 관한 연구
임청환,정진우 한국교원대학교 과학교육연구소 1992 청람과학교육연구논총 Vol.2 No.1
The purpose of this study is to investigate the interrelationships on integrated science process skills and Piagetian cognitive modes for high school students according to the different cognitive reasoning levels. About 509 high school students were randomly selected for the samples of this study. They were identified as concrete, transitional and formal operational stage with the scores of GALT(Group Assessment of Logical Thinking) developed by Roadrangka, Yeaney and Padilla(1982), and TIPS Ⅱ(Test of Integrated Process Skills) developed by Burns, Wise and Okey(1983). The result of this study were showed that about 11.8% of the samples were in the concrete operational stage and about 24.4% of the samples were in the transitional stage, while about 63.8% of them were in the formal operational stage. It was also found that the achivement scores of the science process skills increase in accordance with the cognitive reasoning levels. The value of the correlation coefficient between science process skills and cognitive reasoning abilities was 0.49, which was significant at the 0.05 level. This finding seems to support previous research that the student's cognitive resoning abilities appeared to have influenced student's scores of the science process skills No differences to the logical reasoning ability between male and female students according to each cognitive level were found except formal operational stage.
용융슬래그로부터 합성된 제올라이트 이용한 해수 중의 N, P 제거
임준혁,정진영,이성우,홍성호,김경희,이제근 한국공업화학회 2003 응용화학 Vol.7 No.1
This study examined, as the one way of using zeolite, the about the removal of ammonia nitrogen and phosphorus that cause the eutrophication occurred the adjoining seas.4A type zeolite was used as an adsorbent to remve NH_4-N, PO_4^3-P ion in the artificial seawater. Zeolite is more required than in the fiesh water, under the same conditions, in order to remove NH_4-N in the sea water. The lower the thickness of NH_4-N is in the early stage, the more Freundlich type equation the value of 1./n increases. In case of PO_4^3-P indicated that the removal efficiency was relatively independent of PO_4^3-P concentration. Freundlich parameter 1/n has the value nuder 2. So it shows that absorption is made with relatively ease.
임청환,정진우 한국교원대학교 과학교육연구소 1993 청람과학교육연구논총 Vol.3 No.1
The purpose of this study is to analyze the contents and problems on astronomical areas in the elementary science textbooks. The results of analysis are as follows; 1. In objective analysis of the elementary science textbooks, completeness of unit was shown 50% in chapters, 67% in sections, and 100% in periods. 2. In inquiry activities, the total number of inquiry tasks are 108, among them observation has much more percentage(30%) than any other task. 3. The total inquiry index of the science textbooks are found about 73.4, this index is higher than 35-50 of NSTA. 4. The openness scale of the science textbooks is found to be scale 2 for all sections.