• Title/Summary/Keyword: geographical distributions

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First Report of Two Diogenid Species of Hermit Crabs (Crustacea: Decapoda: Anomura) from Korea

  • Jung, Jibom;Kim, Won
    • Animal Systematics, Evolution and Diversity
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    • v.31 no.2
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    • pp.107-113
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    • 2015
  • Two diogenid hermit crab species, Dardanus lagopodes and Diogenes deflectomanus, are newly reported from Korea. Dardanus lagopodes is distinguished from the other species of genus Dardanus in Korea by having setae with cream-colored tips on the cephalothorax and the following characteristics: ocular peduncles somewhat longer than antennular peduncles, and the pereopod without a longitudinal sulcus and scute-like projections. Diogenes deflectomanus is similar to D. nitidimanus but can be distinguished by having the fixed finger of the left cheliped bent slightly downwardly and the following characteristics: slightly shorter ocular peduncle, elongated left cheliped with small granules on the surface, right cheliped without calcareous teeth on the cutting edge of the dactylus, and the minute spine of post-median margin of the telson is not well developed. The geographical distributions of these two species are extended by the present study. In particular, D. deflectomanus in the current study is the first report outside Chinese waters. Now, 20 species of the family Diogenidae are known in Korean waters.

Revisiting Rhytisma lonicericola: Morphological Characterization and Molecular Phylogenetic Analysis

  • Jung, Bok-Nam;Park, Ji-Hyun;Shin, Hyeon-Dong
    • Mycobiology
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    • v.50 no.2
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    • pp.150-154
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    • 2022
  • Rhytisma lonicericola was identified as a tar spot fungus on Lonicera sp. in 1902, and has since been recorded on several species of Lonicera in China, Japan, and Korea. Most of the previous records of R. lonicericola have been based on a list of disease occurrences in the absence of any formal morphological identification or molecular analyses. Using six newly obtained specimens collected in the past 2 years, we confirmed the tar spot fungus found on L. japonica in Korea as R. lonicericola based on morphological examinations and molecular phylogenetic analyses. This fungus was distinguished from R. xylostei, another tar spot fungus on Lonicera, by ascospore size and geographical distributions. We present detailed mycological information and, for the first time, DNA sequence data useful for the identification of R. lonicericola.

Spacio-temporal Analysis of Urban Population Exposure to Traffic-Related air Pollution (교통흐름에 기인하는 미세먼지 노출 도시인구에 대한 시.공간적 분석)

  • Lee, Keum-Sook
    • Journal of the Economic Geographical Society of Korea
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    • v.11 no.1
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    • pp.59-77
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    • 2008
  • The purpose of this study is to investigate the impact of traffic-related air pollution on the urban population in the Metropolitan Seoul area. In particular, this study analyzes urban population exposure to traffic-related particulate materials(PM). For the purpose, this study examines the relationships between traffic flows and PM concentration levels during the last fifteen years. Traffic volumes have been decreased significantly in recent year in Seoul, however, PM levels have been declined less compare to traffic volumes. It may be related with the rapid growth in the population and vehicle numbers in Gyenggi, the outskirt of Seoul, where several New Towns have been developed in the middle of 1990's. The spatial pattern of commuting has changed, and thus and travel distances and traffic volumes have increased along the main roads connecting CBDs in Seoul and New Towns consisting of large residential apartment complexes. These changes in traffic flows and travel behaviors cause increasing exposure to traffic-related air pollution for urban population over the Metropolitan Seoul area. GIS techniques are applied to analyze the spatial patterns of traffic flows, population distributions, PM distributions, and passenger flows comprehensively. This study also analyzes real time base traffic flow data and passenger flow data obtained from T-card transaction database applying data mining techniques. This study also attempts to develop a space-time model for assessing journey-time exposure to traffic related air pollutants based on travel passenger frequency distribution function. The results of this study can be used for the implications for sustainable transport systems, public health and transportation policy by reducing urban air pollution and road traffics in the Metropolitan Seoul area.

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Use of Geographical Information Systems in Analyzing Large Area Distribution and Dispersal of Rice Insects in South Korea (벼 해충의 분포와 분산의 해석에 있어서 지리정보처리체계의 활용)

  • ;K. L. Heong
    • Korean journal of applied entomology
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    • v.32 no.3
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    • pp.307-316
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    • 1993
  • The potential of using GIS in analyzing pest surveillance data was explored. The Spatial Analysis System (SPANS) was used to construct a spatial data base to study pest distributions using pest surveillance data collected from 152 stations in South Korea. The annual spatIal distributions of the striped rice borer(SRB), Chdo suppressalis, showed that high densities started to expand in the early 1980s, reaching a peak in 1988. The pattern change appears to be related to cultivation of japonica and indica-japonica hybrid varieties in South Korea. Japo7l!ca varieties have longer duration resulting in the SRB haVlng more time to mature and hibernate in wmter. The locus of SRB spread appears to be located in the mid-west region near lri, Chun~ Buk Province. High brown planthopper (BPH) populations in South Korea are often related to the early immigration and temperature. The simulated distribution of PPH densities in September using these two factors was compared with the actual distribution obtained using 1990 data. The two density maps corresponded closely excepL for differences in the south eastern valley. By overlaying the simulated map layer with the elevation and rice area maps, more specific BPH risk zones could be identified.

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The Spatial Characteristics of Clinic Distribution by Specialty Subject (진료 전문과목별 개원 의원의 공간적 분포 특성)

  • Seo, Wee-Yeun;Lee, Keum-Sook
    • Journal of the Economic Geographical Society of Korea
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    • v.10 no.2
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    • pp.153-166
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    • 2007
  • This study attempts to investigate the spatial characteristics of medical hospital distributions in Korea. For the purpose we examine the inter- and intra regional variations in the distributions of clinics by specialty subject. In particular, we analyze the distribution patterns of Location Quotients of clinics for 12 specialty subjects in Seoul. Medical services tend to be concentrated on the large cities, especially in the Metropolitan Seoul Area. In particular, clinics and medical doctors as well as large scale general hospitals have been strongly concentrated on the Metropolitan Seoul area. These circumstace may be related with the fact that medical hospitals are established and operated by private sector in Korea, and thus they attempt to find their location where they can get maximum profit. The distribution patterns of clinics of 12 specialty subjects can be classified to several characteristic patterns. In particular, clinics of plastic surgeon tend to be strongly concentrated on the Gangnam area in Seoul. Finally, clinics of plastic surgeon tend to be located on the areas near the subway stations along the subway Line 2 and Line 3 in the beginning. The existence of plastic surgeons turns out to have significant role on determining the location for the newly opening plastic surgeons in the later. Therefore, their agglomeration has been getting more strongly.

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Mapping of Temperature and Rainfall Using DEM and Multivariate Kriging (수치표고모델과 다변량 크리깅을 이용한 기온 및 강수 분포도 작성)

  • Park, No-Wook;Jang, Dong-Ho
    • Journal of the Korean Geographical Society
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    • v.43 no.6
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    • pp.1002-1015
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    • 2008
  • We investigate the potential of digital elevation model and multivariate geostatistical kriging in mapping of temperature and rainfall based on sparse weather station observations. By using elevation data which have reasonable correlation with temperature and rainfall, and are exhaustively sampled in the study area, we try to generate spatial distributions of temperature and rainfall which well reflect topographic effects and have less smoothing effects. To illustrate the applicability of this approach, we carried out a case study of Jeju island using observation data acquired in January, April, August, and October, 2005. From the case study results, accounting for elevation via colocated cokriging could reflect detailed topographic characteristics in the study area with less smoothing effects. Colocated cokriging also showed much improved prediction capability, compared to that of traditional univariate ordinary kriging. According to the increase of the magnitude of correlation between temperature or rainfall and elevation, much improved prediction capability could be obtained. The decrease of relative nugget effects also resulted in the improvement of prediction capability.

Knowledge and Technology Transfer of University and Regional Development: A Case Study of Chonnam National University (대학의 지식 및 기술이전과 지역발전: 전남대학을 사례로)

  • 안영진
    • Journal of the Economic Geographical Society of Korea
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    • v.6 no.1
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    • pp.171-191
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    • 2003
  • Today universities are regarded as one of the key institutions in the national and regional innovation systems. First of all the diffusion and distribution of the knowledges, technologies, information and know-hows from higher educations to regions are capable of promoting an innovation-led regional development. This study aims to evaluate the transfer and spatial diffusion of knowledge and technology from the Chonnam National University(CNU) in Kwangju to the regions and to focus the analysis of the technology transfer, personnel transfer and spin-off development. The results show that there are some differences in the spatial range and effects of the knowledge and technology transfer of the CNU by the type of transfers. And the Analysis provide evidence that the knowledge and technology distributions from the CNU make more and less positive contribution to regional developments.

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A Study on Spatial Distributions of Value Chain in Korean Cosmetic Industry (우리나라 화장품산업 가치사슬의 공간적 분포)

  • Gu, Ji-Yeong;Ahn, Young-Jin
    • Journal of the Economic Geographical Society of Korea
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    • v.19 no.3
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    • pp.550-565
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    • 2016
  • The size of Korean and global cosmetic industry market are consistently growing and the domestic cosmetic industry's rate of total production increase is higher than GDP in Korea. In addition, the Korean Wave has strengthened not only this phenomenon but also the increase of exports. For these reasons, the purpose of this paper is to analyze Korean cosmetic industry regarded as a new growth engine. For this study, Porter's Value Chain theory, Mudambi's Smile of Value Creation, Cosmetic GMP by ISO, and the production process on cosmetic industry are used as tools. As a result, Korean cosmetic industry comprises five nodes value chains: R&D, Raw Material Manufacture, Container Manufacture, Cosmetic Manufacture, and Marketing. And then, based on this result, the spatial analysis is conducted to identify spatial distribution characteristics of each node.

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An Analysis and Numerical Simulation on Southwestern Prevailing Wind Phenomenon around Pohang in Winter (포항지역의 겨울철 남서계열 탁월풍 현상에 관한 분석 및 수치모의)

  • Lee, Hwa-Woon;Kim, Hyun-Goo;Jung, Woo-Sik
    • Journal of the Korean earth science society
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    • v.24 no.6
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    • pp.533-548
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    • 2003
  • The prevailing wind phenomenon around Pohang in winter was investigated by using surface and vertical observatory datas and a numerical simulation was carried out to analyse this phenomenon using RAMS. Direction of the prevailing wind was westerly at upper atmosphere. However, near the surface, southwestern wind prevailed in winter. Using the RAMS to simulate a winter wind system numerically, it was found out that this phenomenon was strongly affected by the geographical features such as directions of coastline and low level valley, and distributions of land and sea. To investigate the accuracy of the model results, wind speed, temperature and wind direction of typical continuous southwestern wind occurring days were compared with observation data. Analyzing the characteristics of local circulation system was very hard because of horizontally sparse observation data. But from the result above, a numerical simulation using the RAMS, which satisfies the spatial high resolution, will provide more accurate results.

The Analysis of the Educational Conditions of Interior Design in Korea - Focused on the Curriculum of 4 year Universities (한국 실내디자인 분야의 교육현황 분석 - 4년제 대학교의 교과과정을 중심으로 -)

  • 신경주
    • Korean Institute of Interior Design Journal
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    • no.38
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    • pp.3-13
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    • 2003
  • Now that 15 years have passed since its introduction to 4 year college in Korea and we have 51 majors in the field of Intoner design established at 47 universities as of 2003, we are in the position to seek the improvement of its educational qualify. With a view to provide data for the setup of proper educational purpose, it has classified their divisions(departments) according to their major names and belonged colleges of the universities and considered their geographical distributions, groupings of curriculum, their framing and features of a standard curriculum. 1)Divisions of the universities where the major of interior design belongs are divided into three categories of design division (design 8t arts, arts), home economics division (home economics, natural science) and architectural division. For the development of the major, universities to which circumstances permit are recommended to establish an independent college of interior design following the . cases in the US. 2) Geographical preponderance of interior design major on Seoul and Gyeongsang Province is desired to be improved. 3) Curriculum of interior design, which is classified into introduction, history of interior design, theory of interior design, design of interior space, digital technology, design elements of inner space, technology of interior design, behavior of environmental psychology, design management and other subjects, was made into a table by divisions. To sum up, curriculum of interior design concentrates on basic design theory throughout all divisions. In connection with the selection of division by high school-graduates or their parents, design division is recommended for those who desire to major in design elements and design management, home economics division for those who desire to major in space design and behavior of environmental psychology and architectural division for those who desire to major in Interior space design, interior design technology and regulations. 4) This research can contribute to the settlement of desirable curriculum for the interior design education, thus upgrading the education level of the major in Korea.