• 한국응용곤충학회지
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• 제40권3호
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• pp.235-243
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• 2001

파밤나방(Spodoptera exigua(Hubner))의 유전변이가 다형 동위효소를 이용하여 분석되었다. 집단들은 다른 기주, 지리적 위치, 그리고 시기에 따라 세분화되었다. 평균 이형접합자빈도($0.443\pm$0.013)는 파밤나방 전체 집단의 높은 유전변이를 나타냈다. 각 소집단들은 모두 Hardy-Weomberg 균형에서 벗어난 뚜렷한 동계교배 양식을 보였다. 이러한 높은 동계교배 효과는 지역고립에 의한 집단간 분화보다는 대부분 소집단 내 표본 추출 효과에 기인된 비임의교배에 의해 야기되었다. Wright($F_{ST}$ ) 와 Nei의 유전거리(D)는 소집단들간 유전적 분화가 낮음을 나타내지만, 일부 남쪽지역의 소집단들(해남과 사천)은 상대적으로 북쪽의 소집단들(안동과 군위)과 차이를 보였다. 유전적 거리를 기초하여 추정된 세대당 이주 개체수는 서로 다른 기주 집단간 5.9마리, 지역 집단간 10.6마리, 시기 집단간 31.8마리였다. 이러한 유전분석 결과들을 보아 국내 파밤나방은 이들의 탁월한 집단간 이주 능력 때문에 집단간 유전분화가 적은 것으로 나타냈다.

• 한국작물학회지
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• 제44권3호
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• pp.243-247
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• 1999

Mitochondrial DNA restriction fragment length polymorphisms are convenient markers for identifying cytoplasmic variation among plants. We have collected 212 wild soybeans (Glycine soja Sieb. et Zucc) from all over Korea, and classified mitochondrial genome types based on hybridization patterns in DNA gel-blot analyses using two mitochondrial DNA clones, cox2 and atp6, as probes. Korean wild soybean was classified with eight-mtDNA types, and some of the mtDNAs showed geographical clines among the regions. The diversity index of the mtDNA was much higher in the western and southern regions than in the eastern and northern regions of Korea, respectively. Dissemination and distributive characteristics of wild soybeans in Korea were discussed.

• 한국GIS학회:학술대회논문집
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• 한국GIS학회 2003년도 추계학술대회논문집
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• pp.3-8
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• 2003

Census data are usually provided at an aggregated level. However, the aggregated data are essentially arbitrary geographical areas. The areal units used to report census data have no natural or meaningful geographical identity. Unfortunately, this means that analyses of these area aggregations may be conditional upon the set of zones, which are presented. This effect is known as the modifiable areal unit problem (MAUP) and has two related aspects. First, scale effect is the variation in numerical results that occurs due to the number of zones used in an analysis. Second, results may also differ between different ways of aggregating exactly the same data to the same scale; this may be called the aggregation effect (Openshaw, 1984). This study aims to provide a practical tool for the study of MAUP. I have created a set of 91 areal units based on 280 basic units in Nonhyun-2 dong to solve zoning problem and scale problem. We can easily recognize the importance of areal classification as statistics were different according to areal classification.

• 대한지리학회지
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• 제38권
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• pp.61-74
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• 1988

Changing patterns of population densities in urban centers are different between Western countries and non-Western countries. Although Seoul is located in a non-Western country, the result of this study shows that its pattern of population density falls into the category of Western cities. Through the examination of three population density gradient models, it is clear that no model can precisely explain the population distribution of Seoul over time. Some of the models partly indicate the actual population distrisbution. The Clark model is appropriate to denote population distribution in the center of Seoul at an early stage in development. The Sherratt model cannot adequately explain the population distribution of Seoul.

• Animal Systematics, Evolution and Diversity
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• 제35권2호
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• pp.57-62
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• 2019

Eutima japonica Uchida, 1925, a bivalve-inhabiting hydrozoan was collected for the first time in Korea, associating with Mytilus galloprovincialis. The morphology of male medusae of this hydrozoan is clarified by culture and described as well as other developmental stages. As the present material from Korea is in good accord with that of the northern Japanese form of E. japonica, so the geographical distribution of the northern form of this species is widened, Japan, China and Korea. Green fluorescent protein distribution pattern of this medusa is also described and compared with that of the most related species Eutima sapinhoa Narchi and Hebling, 1975.

• Journal of the Korean Data and Information Science Society
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• 제28권1호
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• pp.173-183
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• 2017

본 연구는 아파트 개별 실거래가격에 대한 시공간 자료를 활용하여 아파트 매매가격에 영향을 미치는 요인을 시계열적 흐름과 공간적 변화를 반영한 지리시간가중 회귀모형 (geographical temporal weighted regression; GTWR)모형을 적용하여 분석하였다. 기존 연구에서 활용되었던 일반적인 접근방법인 최소제곱 (ordinary least square; OLS) 회귀모형과 공간 데이터를 분석하기 위한 공간계량 모델 중 가장 많이 활용되고 있는 지리가중 회귀모형 (geographically weighted regression;GWR)과 달리 GTWR은 주택가격 특성을 고려함에 있어서 시간과 공간을 함께 고려함으로써 보다 정밀한 평가모형이 될 것으로 기대되었다. 본 연구에 사용된 주택가격결정 설명 요인들 중에서 건축연도 및 전용면적이 주택가격을 결정하는데 유의적인 영향을 미치는 것으로 나타났으며, 주택가격이 시간적 공간적 특성 모두에 의하여 유의적으로 설명되었다.

• 한국발생생물학회지:발생과생식
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• 제19권4호
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• pp.259-264
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• 2015

Genomic DNA samples isolated from geographical purplish Washington clam (Saxidomus purpuratus) were obtained from three different regions in the Korean Peninsula: Geoje (Geoje population; GJP), Gunsan (Gunsan population; GSP) and a site of North Korea (North Korea population; NKP). The seven primers generated the total 369 loci that can be scored from the GSP clam population. 356 fragments were generated from the NKP clam population. The complexity of the banding patterns varies dramatically between the primers and three localities. In this study, 319 loci were identified in the purplish Washington clam from Geoje and 369 in the clam population from Gunsan: 221 specific loci (69.3%) in the GJP clam population and 300 (81.3%) in the GSP population. These results demonstrate that the primer detected a large quantity of specific fragments, suggesting that the genetic variation in the GSP is higher than in the GJP population. In particular, the BION-28 primer gave DNA profiles with more fragments than the other six primers in the NKP population. The oligonucleotides primer BION-75 produced 21 unique loci to each population, which were ascertaining each population, approximately 250 bp, 300 bp and 400 bp, in the GJP population. Outstandingly, the primer BION-50 detected 21 shared loci by the three populations, major and/or minor fragments of sizes 150 bp, which were matching in all samples. With regard to average bandsharing value (BS) results, individuals from GJP population (0.743) displayed higher bandsharing values than did individuals from GSP population (0.606). In the present study, the dendrogram gained by the seven oligonucleotides primers indicates three genetic clusters: cluster 1 (GEOJE 01 ~ GEOJE 07), cluster 2 (GUNSAN 08 ~ GUNSAN 14), cluster 3 (N.KOREA 15 ~ N.KOREA 21). Among the twenty one clams, the shortest genetic distance that revealed significant molecular differences was between individuals 08 and 09 from the NKP population (genetic distance = 0.073), while the longest genetic distance among the twenty-one individuals that demonstrated significant molecular differences was between individuals GEOJE no. 03 and GUNSAN no. 09 (genetic distance = 0.669). Comparatively, individuals of GJP population were properly closely related to that of NKP population, as revealed in the hierarchical dendrogram of genetic distances. In due course, PCR analysis has revealed the significant genetic distance among three purplish Washington clam populations. PCR fragments discovered in this study could be valuable as a DNA marker of the three geographical clam populations to distinguish.

• 한국해양학회지
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• 제21권3호
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• pp.171-183
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• 1986

서귀포와 제주항에서 기록된 M2조의 진폭은 각각 77.9cm와 70.1cm로서 7.8cm의 차이가 제주도를 가로지르는 30km의 거리에서 일어난다. 이러한 차이는 진폭이 제주도의 남쪽 해안에서는 크고, 북쪽 해안에서는 작은 지역적 변화의 한 예이다. Proudman(1914)의 이론과 같이 평면파의 전파가 섬에 의하여 산란되는 효과로서 위의 현상은 설명될 수 있다. 수치실험은 자료가 보여주는 진폭의 변화상을 재현하 였고, 이론과 일치하는 결과를 보였다. 지구 자전의 효과로 인하여 조석파가 진행하 는 방향을 바라보며 섬의 왼쪽에 위치한 해안에서는 큰 진폭이, 그리고 오른쪽에 위치한 해안에서는 상대적으로 작은 진폭이 나타나게 된다.

• 한국자원식물학회지
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• 제2권2호
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• pp.243-251
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• 1989

The present note describes that polymophLc isoelectrophoretic variation in leaves of theCodonopsis ianceolate Benth. et Hook. fil . 4 enzymes within variety of the zone in Korea and Japan .1. Detected in common bands were NDH-2, Alp-4, -5, -7, -10 aild Lap-2.2. Detected only NDH-1, -3, Est-14, Alp-8 and -9 were area in Korea.3 . Detected only Est-3, -4, -8, -9, -11, -12, -16 and Alp-3 were zone in Japan.4. The results 2 and 3 makes are clearly application to geographical characterlizations.

• 한국대기환경학회:학술대회논문집
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• 한국대기환경학회 2010년도 춘계학술대회 논문집
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• pp.185-186
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• 2010