• Journal of the Korean Geographical Society
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• v.47 no.5
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• pp.641-653
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• 2012

We analyzed two radiocarbon-dated lagoonal sediment cores from Cheonjinho and Ssangho using various biogeochemical methods. As a result, the start times of rice agriculture are estimated to be AD 780 for Cheonjinho and 100 BC for Ssangho. There is a large temporal difference in the beginning of rice agriculture between two study sites even though they are closely located on the coast. This result indicates that pollen records are not sufficient to approximate the start time of rice agriculture accurately. A temporal lag seems to exist between the time when rice agriculture was first introduced and the time when full-scale rice agriculture began in the Yeongdong region, probably because of low agricultural productivity. In both study sites, rice agriculture intensified and slope erosion increased 250 years after full-scale agriculture began. This suggests that intensified rice agriculture resulted in an increased number of inhabitants, settlement expansion to hilly areas, and the consequent deforestation.

• Journal of the Korean Geographical Society
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• v.38 no.5
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• pp.802-821
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• 2003

This paper aims to illuminate how the Naturalists' concern on geography and geography education, mainly in Comenius, Rousseau, Pestalozzi who have played key roles in the development of Naturalism, has developed and how the Naturalism has influenced on the development of geography and geography education. Starting from sensual realism, the Naturalism suggested the educational principle and methods adjusting to the Nature well as exercised great influence on the formation of modem school education toward popular common education. The geography took the firm position as subject in the curriculum of the Naturalists and achieved the rationale of existence as subject in curriculum with utility to expand human experience, thanks to Naturalists. The Naturalists developed several ideas on geography teaching method such as labouring activity-centered geography teaching based on strengthening sense and experience by 'look-and-see' approach, local geography-centered geography teaching with stress the local area as the focus of direct experience and living environment, and the real thing-centered geography teaching by fieldwork. Moreover, The Naturalists had an great effect on the geographer, Karl Ritter in terms of methodology of geography.

• Journal of the Korean Geographical Society
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• v.38 no.2
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• pp.257-274
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• 2003

This study is to diagnose the tourism structure of the southern region in Kangwon province and to correct the problems regarding the subject. The methods of comparison and analysis on structural and geographical characteristics of tourists, tourism resources, and tourism industry by region have been employed. It was found that the southern region of Kangwon province has many advantages for tourism industry including excellent transportation networks such as Kangnws and Wonju and tourism demands are great for coal mines in the region including Chongson, Taebaek, and Samchok. Accordingly, tourism in the region has witnessed a distinctive increase in recent years. On the other hand, excessive dependence on nature-based tourism, concentration of tourism demands only during summer season, and insufficient tourism facilities are found to be problems. This study also found that for sustainable tourism developments in the southern region of Kangwon, categorization and diversification of tourism resources, development of combined programs connecting Kangwon province to other regions, improvement of tourism facilities, expansion of tourism market, and smaller division of tourism area are necessary.

• ALGAE
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• v.33 no.3
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• pp.269-278
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• 2018

Ocean warming can have significant negative impacts on population genetic diversity, local endemism and geographical distribution of a wide range of marine organisms. Thus, the identification of conservation units with high risk of extinction becomes an imperative task to assess, monitor, and manage marine biodiversity for policy-makers. Here, we surveyed population structure and genetic variation of the red seaweed Gracilaria vermiculophylla along the coast of China using genome-based amplified fragment length polymorphism (AFLP) scanning. Regardless of analysis methods used, AFLP consistently revealed a south to north genetic isolation. Populations at the southern coast of China showed unique genetic variation and much greater allelic richness, heterozygosity, and average genetic diversity than the northern. In particular, we identified a geographical barrier that may hinder genetic exchange between the two lineages. Consequently, the characterized genetic lineage at the southern coast of China likely resulted from the interplay of post-glacial persistence of ancestral diversity, geographical isolation and local adaptation. In particular, the southern populations are indispensable components to explore evolutionary genetics and historical biogeography of G. vermiculophylla in the northwestern Pacific, and the unique diversity also has important conservation value in terms of projected climate warming.

• The Korean Journal of Soil Zoology
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• v.1 no.2
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• pp.110-119
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• 1996

The authors investigated the spider fauna of Mt. Yebongsan from May 1994 to Aug. 1996. In this paper, 265 species from 21 genera, and 28 families were identified and compared with those from islands geographical with differing i.e., Is. Paikryung-do, Is. Chin-do, and Is. Ulrung-do distribution and climate. Spiders from 45 palaearctic regions(3.69%), 13 holarctic regions(1.06%), 4 oriental regions(0.32%) and 5 cosmopolitans(0.41%) are identified. Various methods were used for collecting specimens during the period including pitfall, beating, sweeping and looking up-down.

• Proceedings of the KSRS Conference
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• 2007.10a
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• pp.434-437
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• 2007

Maps contain and effectively visualize a number of spatial information. Advances in GIS enable researchers to analyze and represent spatial information through digital maps. Choropleth maps represent different quantities showing usually rates, percentages or densities. Generally, researchers make choropleth maps using raw rates. But, if the events are rare, raw rates cannot be sufficient in representing spatial phenomena. That is to say, if the population is large and events are rare, we cannot be sure that the raw rate is correct. The objective of this study is to make choropleth maps by several rate calculation methods and compare them. We use three methods in choropleth mapping; a raw rate, empirical Bayesian method, and spatial rate method which use prior probabilities. The experiments reveal that maps are somewhat different by used methods. We suggest that a raw rate method can not be an only way to make a rate map and researchers should choose an appropriate method for their objectives.

• Proceedings of the Computational Structural Engineering Institute Conference
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• 1998.10a
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• pp.381-388
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• 1998

This paper describes the development of an expert system designed to help engineers select proper foundation types and construction methods for structures under various subsoil conditions. The system includes geographical and geological data in certain areas of Ulsan and a knowledge base for the selection of foundation types. Geological data, such as boring logs, in the areas were collected and arranged to form the subsoil database in the areas concerned Test borings at 30 holes were carried out for reference and confirmation purposes. The use of this system is twofold. It provides the users with a quick view on the geological situations of the areas concerned, and suggests proper foundation types for the specific spot together with some explanations on the selected foundation types and methods.

• Journal of the Ergonomics Society of Korea
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• v.7 no.2
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• pp.23-30
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• 1988

The methods suggested up to now for 3-dimensional anthroponetry require much efforts and costs in measuring and analysing. To solve these problems, we adopt the methods such as Moire Interferometry, Image processing and Computer Vision Technique which are efficient in processing anthropomorphic data. Moire contourgraph was constructed by using Ar-ion laser as a light source (2 Watt power and 5145 A wavelength) and laser beam expander(20X). Image data can be 3-dimensionally reconstructed as the surface patch and geographical relation between faces expressed by mash-point and edges as units. This research is focused on the followings; 1) Development of an economical and reliable measuring method. 2) Design of reproduction methods of 3-dimensional human body data. Therefore, our research makes it possible to study further advanced quantitative analysis of human body.

• Journal of the Economic Geographical Society of Korea
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• v.9 no.2
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• pp.261-272
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• 2006

This work examines the delimitation of metropolitan areas in Canada, focusing on the Census Metropolitan Areas/Census Agglomerations(CMAs/CAs) that the Statistics Canada defines every Census year. The CMA/CA is built upon the functional-area method which is among the three approaches (i.e., density-based, land use-based, functional-area approaches) to the definition of an urban area. Importantly, the delimitation of a CMA/CA employs the Urban Area(UA) which the Statistics Canada defines via density-based and land use-based methods. In particular, the UA which has 10,000 or more residents is the urban core of a CMA/CA. Our examination of the CMA/CA in Canada also presents some points to be considered with regard to the delimitation of metropolitan areas in Korea which has yet to be implemented.

• Journal of the Economic Geographical Society of Korea
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• v.10 no.1
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• pp.19-43
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• 2007

The purpose of this study is to distinguish industrial clusters in Korea. Based on I/O table in 2000, coefficient matrix was calculated and factor analysis was performed on the matrix. Among 38 derived industrial clusters, 5 of them were unreported clusters, which were indistinguishable. Once these 38 industrial clusters were differentiated according to I/O table, final results of clusters were produced as I/O table was converted into KSIC (Korean Standard Industry Code). Since existing studies on industrial cluster have been focused on qualitative methods such as case studies and interviews, it is expected that this study could contribute to carry out more systematic and efficient methodology.