• KOREAN JOURNAL OF CROP SCIENCE
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• v.28 no.3
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• pp.334-339
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• 1983

With the 91 lines of Italian millet collected throughout the whole country in Korea and the 238 varieties from several Asian countries, trial was carried out to elucidate its differentiation, dissemination and distribution, and the ethnobotanical relations to the adjacent area. Glutinous millets which consisted of 66% among the collected Korean lines were widely distributed throughout the whole country, but non-glutinous ones were mainly distributed in the mountainous regions and Jeju island. The variations in germinability at low temperature were recognized among lines, but seemed not to be closely related to their regional distribution. The collected lines with small grain size were distributed mainly in the mountainous regions of middle and northern part of Korea and larger ones in Jeonnam province and Jeju island. And some of them were larger in grain size as compared with that of Japanese and Republic of China varieties. Seed coat color of collected lines in Korea showed wide variations from yellow to gray, especially in Gyungbuk province. However, all lines from Chungnam, Jeonnam and Gyungnam province were yellow in seed coat color. All lines from Korean collection except two lines indicated negative(-) phenol reaction which is very similar to that of Japan and China, while these were quite different from the varieties of Republic of China, Philippines and India, of which 30-60% showed positive(+) phenol reaction. The pattern of the esterase isozyme m Korean lines was simillar to that of Japanese lines and this was quite different from that of Republic of China, Philippines and India. Variation of this trait was greater in Chinese and Korean lines.

• Journal of Environmental Impact Assessment
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• v.31 no.6
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• pp.388-408
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• 2022

This study was conducted to select the indicator species (plant) according to the topographical characteristics in the Picea jezoensis forests, endangered subalpine coniferous trees. In South Korea and China (close to Baekdusan), the southern tree line limit of Picea jezoensis has meaningful geographical and latitudinal values for analyzing the ecological characteristics of P. jezoensis forests. Latitude greatly affects the geographical values of plant ecology, and the difference in latitude and habitat affects the change in species composition in forests. With prolonged environmental change, the habitat of subalpine plants will become smaller, and the plants may become extinct. As the P. jezoensis forests of South Korea and China, in particular, are in danger of disappearing without protection, it is important to monitor the population and develop a conservation strategy. Eighty-seven circular plots were established in P. jezoensis forests in South Korea and China. Through processes such as MRPP-test and NMS ordination, indicator species were selected based on this, and basic data for biodiversity assessment were presented. As a result of the Indicator Species Analysis (ISA), 5 taxa were selected from the upperstory vegetation and 18 taxa from the understory vegetation at the altitude(p<0.05). Indicator species by aspect were analyzed as 3 taxa for upperstory vegetation and 16 taxa for understory vegetation (p<0.05). In the case of indicator species according to the slope, 6 taxa for upper vegetation and 24 taxa for understory vegetation were selected(p<0.05). As for the indicator species according to their habitat, 8 taxa in upper vegetation and 65 taxa on understory vegetation were selected. As a result of MRPP-test, it was analyzed that the species composition was heterogeneous in the group of understory vegetation than that of upperstory vegetation. As a result of NMS ordination, the correlation with environmental factors of indicator species was analyzed by rock exposure for upperstory vegetation and latitude for understory vegetation (cut off level=0.3).

• Journal of Korea Spatial Information System Society
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• v.10 no.2
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• pp.63-79
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• 2008

With the recent development of advanced GIS and complex spatial analysis technologies, the more sophisticated technologies are being required to support the advanced knowledge for solving geographical or spatial problems in various decision support systems. In addition, necessity for research on scientific crime investigation and forensic science is increasing particularly at law enforcement agencies and investigation institutions for efficient investigation and the prevention of crimes. There are active researches on geographic profiling to predict the base location such as criminals' residence by analyzing the spatial patterns of serial crimes. However, as previous researches on geographic profiling use simply statistical methods for spatial pattern analysis and do not apply a variety of spatial and temporal analysis technologies on serial crimes, they have the low prediction accuracy. Therefore, this paper identifies the typology the spatio-temporal patterns of serial crimes according to spatial distribution of crime sites and temporal distribution on occurrence of crimes and proposes STA-BLP(Spatio-Temporal Analysis based Base Location Prediction) algorithm which predicts the base location of serial crimes more accurately based on the patterns. STA-BLP improves the prediction accuracy by considering of the anisotropic pattern of serial crimes committed by criminals who prefer specific directions on a crime trip and the learning effect of criminals through repeated movement along the same route. In addition, it can predict base location more accurately in the serial crimes from multiple bases with the local prediction for some crime sites included in a cluster and the global prediction for all crime sites. Through a variety of experiments, we proved the superiority of the STA-BLP by comparing it with previous algorithms in terms of prediction accuracy.

• Proceedings of the Korea Information Processing Society Conference
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• 2002.11c
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• pp.1745-1748
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• 2002

빠른 인터넷의 보급과 정보화 사회의 발전에 따라 다양한 형태의 문서를 통합하여 유통할 수 있는 XML(eXtensible Markup Language)이 등장하게 되었다. 이러한 XML의 장점을 이용하여 지리적 특성을 가진 정보에 대한 문서의 표준이 요구되었고, 이에 따라 OGC(Open GIS Consortium)에서는 GML(Geography Markup Language) 명세를 제시하였다. Geometry와 geographic feature 정보를 포함하고 있는 GML은 다양한 데이터 타입에 대한 상호 운용성을 제공하고, 통합된 지리 정보를 유통할 수 있게 하는 장점을 가진다. 현재 이러한 장점을 가진 GML 지원 시스템과 응용에 대한 연구가 활발히 진행 중이나, 구체적인 방법론에 관한 제시는 미흡하다. 이에 본 논문에서는 공간 데이터베이스의 지리 정보를 GML 명세에 따른 GML 문서로 변환하는 방법과 GML 문서 내에 표현된 지리정보를 공간 데이터베이스에 저장하는 두 가지 방법을 제안한다.

• Korean Journal of Environment and Ecology
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• v.8 no.1
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• pp.11-26
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• 1994

The criteria which have been used for the assessment of wildlife conservation values and particularly botanical values during the last decade, 1969~1986, were reviewed in order to select an appropriate set of criteria applicable for Korea. Fifteen studies, including studies of particular sites reviews of ecological evaluation are reviewed. Four criteria, rarity, diversity, size & extent and naturalness were used in more than half of these studies reviewed. The sixteen components were arranged with the scale of the sites, in view of the Korean situation. The human Interference, ecological fragility. as well as rarity, etc. were major components to be considered at small scale sites. In the contrary, area, diversity position in ecological and geographical unit, and naturalness, etc. considered the major components at larger scale sites. The components such as uniqueness, typicalness, research and educational, etc. were considered both applicable. Although this criteria should be tested by applications in the field and amended there after, It will be one of the first-step to evaluate of the protected areas, as well as specific plant species in the future.

• Proceedings of the Korea Water Resources Association Conference
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• 2020.06a
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• pp.293-293
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• 2020

기후변화로 인해 다양한 재난이 복합적으로 발생하고 있으며, 특히 해안과 인접해 있는 지역은 풍랑, 지진해일 등으로 인해 다양한 위험에 노출되어 있는 실정이다. 이에 따라 각 지자체는 자연재해대책법에 의거하여 자연재해저감종합계획을 수립하고 저감대책을 마련하고 있으나, 수립 절차에 따른 비용과 시간이 많이 소요되고 있다. 따라서 위험지역의 지리적·사회적 조건을 고려한 맞춤형 재해예방기법 도출방안이 필요하다. 이에 본 연구에서는 과거 피해이력과 침수예상도 정보가 반영된 위험성평가 지도를 활용하여 위험지역 유형을 4단계(관심, 주의, 경계, 위험)로 구분하고, 단계별 구조물적 대책과 비구조물 대책의 적용방안을 제시하였으며, 구조물적 대책과 비구조물적 대책의 도출에는 지역맞춤형 요소와 특성요소를 활용하였다. 지역맞춤형 요소는 자연인자, 재해영향인자, 재해원인인자, 지형인자, 사회인자로 구분하였으며, 각 인자별로 세부인자를 선택하여 논리연산에 따라 재해예방기법을 도출하였다. 특성요소는 효율성, 시공성, 공공성으로 구분하였고, 각 구분별 세부요소를 평가하여 재해예방기법의 우선순위를 도출하였다. 본 연구를 통해 향후 해안가 복합재난이 예상되는 지역을 대상으로 지역맞춤형 재해예방기법을 도출할 수 있을 것이며, 자연재해저감종합계획 수립 시에도 활용할 수 있을 것으로 기대된다.

• Journal of the Korean Geographical Society
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• v.42 no.5
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• pp.808-834
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• 2007

This study attempts to elucidate manifold dimensions of gendered accessibility experiences. How gender roles(household responsibilities) differentiate accessibility experiences between women and men is explored through the comparison of married dual-earner couples' parental status, using the US Portland activity-travel diary dataset with GIS-based geocomputation results of(time-geography based) space-time accessibility. First, this study shows how gender division of labor within the household still permeates current society, despite the widespread belief of the social change toward a gender-egalitarian society. Then, the study pays special attention to the way gender roles structure individual accessibility experiences of women and men differently, and, in turn, the way such accessibility experiences take a form of gendered spatiality. Gendered spatiality is examined through the analysis of accessibility space as well as activity space in order to ascertain women's home-attached and spatially entrapped characteristics. More household responsibilities throughout a day and, even more, the time constraint of picking up children at the daycare centers after work lead women's possible activity space to be more home-centered. The analysis of the spatio-temporal context of accessibility space makes gendered spatiality visible. However, the findings suggest that behavioral outcomes should be understood with an explicit awareness of constraints individuals face. It is because the revealed activity spaces can be not only an outcome of constraint but also an outcome of choice. Behavioral outcomes should not be treated as a straightforward expression of the level of constraints. It is problematic to expect that behavioral outcomes directly mirror the level of constraints. It is also problematic to suppose that the level of constraints can be straightforwardly elicited from revealed behavioral outcomes.

• Journal of Mushroom
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• v.18 no.4
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• pp.323-330
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• 2020

Agaricus bisporus is an important edible mushroom that is used as a functional food. In this study, European A. bisporus strains were analyzed for genetic diversity, population structure, and genetic differentiation using simple sequence repeat (SSR) markers. European A. bisporus strains were divided into four groups by distance-based analysis and two subpopulations by model-based analysis. The SSR markers used in this study did not group European A. bisporus strains by geographical region or pileus color. Genetic diversity was high in Group 4 based on distance-based analysis and Pop. 2 based on model-based analysis. A. bisporus strains showed very low genetic differentiation. The results of this study can be used for breeding A. bisporus in the future.

• Spatial Information Research
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• v.18 no.4
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• pp.141-149
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• 2010

One of recent trends in Web-based GIS is the system development using FOSS (Free and Open Source Software). Open Source software is independent from the technologies of commercial software and can increase the reusability and extensibility of existing systems. In this study, we developed a Web-based GIS for interactive visualization of geographic information using Google Earth and spatial DBMS(database management system). Google Earth Plug-in and Google Earth API(application programming interface) were used to embed a geo-browser in the Web browser. In order to integrate the Google Earth with a spatial DBMS, we implemented a KML(Keyhole Markup Language) generator for transmitting server-side data according to user's query and converting the data to a variety of KML for geovisualization on the Web. Our prototype system was tested using time-series of LAI(leaf area index), forest map, and crop yield statistics. The demonstration included the geovisualization of raster and vector data in the form of an animated map and a 3-D choropleth map. We anticipate our KML generator and system framework will be extended to a more comprehensive geospatial analysis system on the Web.

• Korean journal of applied entomology
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• v.48 no.4
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• pp.453-457
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• 2009

This study was conducted to investigate insect fauna in the four insect garden sites of Suwon, Yeongyang, Buyeo and Yecheon from 2005 to 2007. Seasonal population size of insects was largest from June to August in all the four sites. In the four sites, Coleopteran insects were dominant followed by Hemiptera and Orthoptera. Unique education/learning programs are successfully run at the insect gardens based on the three geographic types (i.e. urban, mountainous and rural). These activities will help preserve insect biodiversity in the area and visitors better understand life forms such as insects found in the areas.