• Bulletin of the Korean Space Science Society
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• 2009.10a
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• pp.43.3-43.3
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• 2009

Our previous study showed the intensity of the long LBH (1600 - 1715 ${\AA}$) was enhanced very much compared to that of the short LBH (1400 - 1500 ${\AA}$) when the characteristic energy of the precipitating electrons increased from 1 keV to > 7 keV, in accordance with the theoretical models. In this presentation, we would like to present the results of our study for new modeling results about previous report and even higher energy electrons. We selected the events in which the fluxes both in the low energy (100 eV ~ 20 keV) and in the high energy (170 ~ 360 keV) were enhanced, and examined the auroral spectra for these events observed simultaneously by the imaging spectrograph on the same spacecraft. While the accurate characteristic energy could not be determined because of the gap in the energy range, our result showed the intensity ratio of the long LBH to the short LBH ranged from 1.2 to 2.0 in these events, in contrast to 1.0 or smaller for the events in which the highest enhancement was seen only in the low energy. Our study suggests that intense auroras might be accompanied by high energy electrons above 20 keV.

• Journal of Korean Society of Forest Science
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• v.90 no.5
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• pp.585-592
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• 2001

Interest in the development of urban trails is growing in South Korea. River front trails have been developed in Seoul, Daegu and other major cities. Such trails, and the corridors in which they are developed, often provide a myriad of benefits to the community, including open space, exercise, and stress release. This trend mirrors development patterns found in the United States and European nations. This study examined differences in trail users perceptions of trail attributes, activity participation, willingness to pay for trail access, and perceptions of trail benefits between trail users in the United States and those in South Korea. Perceptions of trail users at three trail sites in the metropolitan area of Daegu were examined, and then were compared to results reported in several studies conducted in the U. S. While this research was exploratory, it did uncover many interesting differences in perceptions of trail attributes between trail users in the two countries. This information may provide insight into the development of greenway systems in South Korea.

• Journal of Korean Society of Forest Science
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• v.88 no.3
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• pp.299-308
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• 1999

How the society perceives National Park plays the most important role to achieve the goal for the National Park, which is to protect the ecosystems in the park. The survey for the visitors to Soraksan National Park was conducted to search for the answer to the question. As a result of the analysis based upon the perception types derived from the survey and factors affecting those types, the National Park can be explained by emotionally oriented type(scenic beauty), culturally oriented type, recreation oriented type, and economically oriented type. The first three types are strongly rooted in traditional culture, whereas the fourth type always conflicts with the goal of ecosystem protection. Korea has a long way to go to be familiarized with both the concept of ecosystem protection required by IUCN(The World Conservation Union) and the environmental ethics approach popularly promoted in the western world. The long term strategy for the protection of natural ecosystem should be approached in a manner that the traditional culture can be integrated into all aspects of park management.

• Journal of Korean Society of Forest Science
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• v.104 no.2
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• pp.332-335
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• 2015

Taphrina wiesneri, a pathogen of cherry witches' broom, is highly pathogenic to Prunus yedoensis Matsumura which are widely planted in parks and streets in South Korea. In order to control the disease, it is crucial to know the life cycle of the fungus. We attempted to detect the fungus tentatively overwintering in shoots and branches of cherry trees both having witches' broom and healthy before flowering and leafing in spring using PCR with species-specific primer set (TwITSF and TwITSR). Genomic DNAs were extracted from the symptomatic and the asymptomatic shoots or branches. Results indicated that T. wiesneri is present in leaf buds and inner bark not only in symptomatic branches but also in the asymptomatic branches in diseased trees. However, the fungus was not detected in flower buds of the symptomatic trees and any samples of healthy trees.

• Journal of Digital Convergence
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• v.18 no.8
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• pp.97-102
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• 2020

In this paper, the concept of the diversified cultural tourism industry in Korea and China was summarized and the research direction was suggested. Also, the characteristics and status of the cultural tourism industry were analyzed. As a characteristic of the cultural tourism industry in both Korea and China, it exhibited similar cultural tourism forms such as performances, theme parks, festivals, and museums. Korea had a unique cultural tourism form called Hallyu cultural tourism, and China is also a rare cultural arts complex in Korea. And has developed cultural tourism. The strength of the Korean culture and tourism industry is that it is rich in cultural resources and possesses many assets with cultural contents, and the strength of the Chinese culture and tourism industry is that it has abundant tourism resources and huge economic power. As such, Korea and China with many similarities were found to be a country with high interest and potential in the cultural tourism industry, which is growing into a high value-added industry in the future. In addition, in order to continuously and stably develop the cultural tourism industry, continuous efforts and interests and proper research must be conducted so that the two countries can coexist with each other.

• Proceedings of the Korean Society of Environment and Ecology Conference
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• 2005.04a
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• pp.21-32
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• 2005

To investigate the vegetation structure of mountain ridge from Bubong to Poamsan, 16 plots$(400m^2)$ set up with random sampling method were surveyed. Three groups Quercus mongolica-Pinus densiflora community, Quercus variabilis-Pinus densiflora-Quercus mongolica community were classified by cluster analysis. Quercus mongolica was found as a major woody plant species in the ridge area from Bubong to Poamsan, and partly in lower elevation was occupied by Quercus variabilis and Pinus densiflora. High positive correlations was proved between Lespedeza maximowixcii and Pinus koraiensis, Fruxinus sieboidiana and Rhododendron mucronulatum, Acer mono and Weigela subsessilis, and relatively high negative correlations was proved between Symplocos chinensis for. pilosa and Fraxinus sieboldiana, Rhododendron mucronulatum Species diversity(H') of investigated groups were ranged $0.9066\~1.0821$, and it was relatively low compared to those of mountain ridge area of other national parks.

• Korean Journal of Environment and Ecology
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• v.18 no.2
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• pp.142-149
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• 2004

To investigate the vegetation structure of subalpine region from Hyangjeukbong to 2nd Deogyusan, 20 plots(100$m^2$) set up with random sampling method were surveyed. Three groups Quercus mongolica community, Betula ermanii - Picea jezoensis - Taxus cuspidata community, Taxus cuspidata - Qurecus mongolica - Betula ermanii community were classified by cluster analysis. Quercus mongolica, Taxus cuspidata and Betula ermanii were found as a major woody plant species in the subalpine region from Hyangjeukbong to 2nd Deogyusan. In this area, Korean endemic species, Abies koreana was distributed small amounts. In future, importance percentage of Abies koreana might be decreased, but that of Betula ermanii might be increased. High positive correlations was proved between Betula ermanii and Rhododendron schlippenbachii, Rhododendron mucronulatum var. ciliatum ; Acer tschonoskii var. rubripes and Acer mono; Syringa velutina and Magnolia sieboldii and relatively high negative corrlations was proved between Betular ermani and Acer tschonoskii var. rubripes ; Quercus mongolica and Acer mono; Abies koreana and Tripterygium regelii, Weigela subsessilis. Species diversity(H') of investigated groups were ranged 1.0316∼1.1776 and it was similar to those of the ridge area of the national parks in Baekdudaegan.

• Korean Journal of Environment and Ecology
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• v.18 no.2
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• pp.184-190
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• 2004

The purposes of this study were to understand and compare visitors' and residents' perception about Baekdudaegan. To accomplish the purposes of study, the questionnaire surveys in visitor and resident group were employed at Deogyusan area where is a southern part of Baekdudaegan. As for the results, the knowledge level about Baekdudaegan was low in both groups. Visitors' overall attitudes to management of baekdudaegan were more preservation-oriented as compared with resident group. In addition, both groups pointed there is need to be exceptionally managed through special land zoning approach. The Korea Forest Service, Ministry of Environment, National Parks Authority, local government were perceived as proper management agencies for Baekdudaegan. Findings of this study could be used as basic information for establishing effective management policy in Baekdudaegan. Continuous survey effort which can be aroused public opinion would be asked to produce effective decision-making for Baekdudaegan.

• Korean journal of applied entomology
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• v.31 no.4
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• pp.427-451
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• 1992

The nematodes associated with forest trees were surveyed in the National Parks and Mountains in Korea. A total of 73 species on 28 genera were identified from rhizosphere of 154 tree s species. Platycarya strobilacea, Ulmus davidiana and Acer ginnala were known to new host p plants of Meloinema kerongens. Bursaphelenchus xylophilus was detected only in Pusan on Pi$\pi$us t thunbergii, B. mucronatus was detected in Cheju, Masan, and Chinhae. Insect parasitic nemat todes, Prothallonema intermedium, on P. rigida in Daegu, P. thunbergii in Cheju city, Namwonu up, Gujoa-up and Aewol-up. The number of nematode species according to forest trees was t the highest on P. thunbergii to 32 species, followed by 24 species on Abies holophylla, 20 species on Zelkova serrata, 19 species on Diospyros kaki, 18 species on Quercus acutissima, respectively. L Localities of distribution according to nematode species were as follows; Crico$\pi$emella i$\pi$formis i in 81, X. americanum in 74, Tylenchorhynchus claytoni in 51, C. macrodora in 35, H Hemicriconemoides varionodus and Ogma serratum in 31, Pararotylenchus pini in 25, H Hemicycliophora koreana in 24, Aphelenchus avenae and C. pseudohercyniensis in 24, respectively.

• Journal of the Korean Association of Geographic Information Studies
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• v.18 no.3
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• pp.1-10
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• 2015

Rapid urban expansion and densification of the various industrial facilities affect the changes of topography and building in urban areas. Even if buildings proceed with high rise, they get mixed with low-rise buildings such as houses and industrial parks that have existed in the area. This may confuse the designer in estimating a surface roughness, an important factor in calculating the design wind velocity of building. This study analyzed the surface roughness by using a geographic information. Referring to the criteria of each country's building code, this study proposed a method to distinguish the surface roughness depending on the height of the surrounding buildings where the design building is located and calculated the surface roughness using 1:5000 topographic map and GIS. It is expected to solve problems that an existing designer calculates the surface roughness in a subjective manner and to help to design more rational buildings resistant to wind.