• Journal of the Korean association of regional geographers
• /
• v.18 no.4
• /
• pp.464-472
• /
• 2012

To assess the space-time clustering of FMD(Foot-and-Mouth Disease) epidemic occurred in Korea between November 2010 to April 2011, geographical information system (GIS)-based spatial analysis technique was used. Farm address and geographic data obtained from a commercial portal site were integrated into GIS software, which we used to map out the color-shading geographic features of the outbreaks through a process called thematic mapping, and to produce a visual representation of the relationship between epidemic course and time throughout the country. FMD cases reported in northern area of Gyounggi province were clustered in space and time within small geographic areas due to the environmental characteristics which livestock population density is high enough to ease transmit FMD virus to the neighboring farm, whereas FMD cases were clustered in space but not in time for southern and eastern area of Gyounggi province. When analyzing the data for 7-day interval, the mean radius of the spatial-time clustering was 25km with minimum 5.4km and maximum 74km. In addition, the radius of clustering was relatively small in the early stage of FMD epidemic, but the size was geographically expanded over the epidemic course. Prior to implementing control measures during the outbreak period, assessment of geographic units potentially affected and identification of risky areas which are subsequently be targeted for specific intervention measures is recommended.

• Journal of the Korean association of regional geographers
• /
• v.17 no.4
• /
• pp.432-442
• /
• 2011

Climatic variables such as temperature and precipitation tend to vary both in space and in time simultaneously. Thus, it is necessary to include space-time autocorrelation into conventional spatial interpolation methods for reliable time-series mapping. This paper introduces and applies space-time variogram modeling and space-time kriging to generate time-series temperature maps using hourly Automatic Weather System(AWS) temperature observation data for a one-month period. First, temperature observation data are decomposed into deterministic trend and stochastic residual components. For trend component modeling, elevation data which have reasonable correlation with temperature are used as secondary information to generate trend component with topographic effects. Then, space-time variograms of residual components are estimated and modelled by using a product-sum space-time variogram model to account for not only autocorrelation both in space and in time, but also their interactions. From a case study, space-time kriging outperforms both conventional space only ordinary kriging and regression-kriging, which indicates the importance of using space-time autocorrelation information as well as elevation data. It is expected that space-time kriging would be a useful tool when a space-poor but time-rich dataset is analyzed.

• Journal of the Korean Geographical Society
• /
• v.46 no.6
• /
• pp.673-692
• /
• 2011

Advances in computer technology have enabled us to develop and use numerical landscape evolution models (NLEMs) for exploring the dynamics of geomorphic system from a variety of viewpoints which previously could have not been taken. However, as of yet there have been no trials using or developing NLEMs in Korea. The purpose of this research is to develop a 2 dimensional NLEM on a geological time scale and evaluate its usefulness. The newly developed NLEM (ND-NLEM) treats bedrock weathering as one of the major geomorphic processes and attempts to simulate the thickness of soil. As such it is possible to model the weathering-limited as well as the transport-limited environment on hillslopes. Moreover the ND-NLEM includes not only slow and continuous mass transport like soil creep, but also rapid and discrete mass transport like landslides. Bedrock incision is simulated in the ND-NLEM where fluvial transport capacity is large enough to move all channel bed loads, such that ND-NLEM can model the detachment-limited environment. Furthermore the ND-NLEM adopts the D-infinity algorithm when routing flows in the model domain, so it reduces distortion due to the use of the steepest descent slope flow direction algorithm. In the experiments to evaluate the usefulness of the ND-NLEM, characteristics of the channel network observed from the model results were similar to those of the case study area for comparison, and the hypsometry curve log during the experiment showed rational evidence of landscape evolution. Therefore, the ND-NLEM is shown to be useful for simulating landscape evolution on a geological time scale.

• Journal of the Korean Geographical Society
• /
• v.49 no.5
• /
• pp.705-715
• /
• 2014

Acculturation is caused with contact by two different cultures. This study investigates a cultural change of Gangwha society with Hagok confusianism influenced by implantation of methodism. At early periods methodism diffused rapidly and relocated toward marine routes. Lately hierarchical diffusion and contagious diffusion was typical, centering on the Gangwha Jungang Church. This successful acception was influenced with confusianism's acculturation. One of the reason why Gangwha people could accept the Christianity was reinterpretation and selective strategy by Hagok fraction that became one of confusinism, It seemed that several cultural elements of Hagok fraction was coincided with some elements of methodism. However, A methodist church transferred by clan's shrine, which family relationship was coerced, was split into it's members. This segregation other than social intergretation influenced establishment of a or more church per each village.

• Journal of the Korean Geographical Society
• /
• v.49 no.5
• /
• pp.779-793
• /
• 2014

This study was aimed at examining the recent and the future changes of tourism climatic conditions for Chiaksan national park using TCI(Tourism Climate Index). The distribution type of daily mean of TCI showed the bimodal-shoulder peaks for all periods of the past and the future. Therefore, Chiaksan national park showed affordable climate of touring in spring and autumn due to temperature and relative humidity constituting Cid and Cia. Summer tourism climatic conditions of Chiaksan national park has become worse recently. In the future, these trends are projected more stronger. Also, the lowest TCI in the year is projected to shift from winter to summer due to a decrease of Cid.

• Journal of the Economic Geographical Society of Korea
• /
• v.8 no.1
• /
• pp.71-89
• /
• 2005

In the era of knowledge-based society and glocalization the new role and mission of universities is of increasing concern to us. Studies of the successful universities suggest that there are many ways for the future development of universities, for example high qualification, specialization, and internationalization of universities etc. In this context we can also focus particularly on the regionalization of universities in terms of the university as a regional builder. This paper aims to identify the interactions between universities and regions and to explain their's contributions to the regional developments. The result of analysis shows that the university-region interaction is a win-win strategy both for university and for region in the rapid changing social-economic, administrative and educational environments, and more systematic and stepwise approaches are required to ensure a mutually beneficial collaboration.

• Journal of the Korean association of regional geographers
• /
• v.11 no.4
• /
• pp.440-452
• /
• 2005

The granites in the Gyeongju area are represented by the Namsan granites and the Tohamsan granodiorites. In this study I examined the geomorphological and geological characteristics of the granite landforms in the Gyeongju area. Joint, tor and corestones are most identifiable geomorphological and geological structure in the study areas. Tor in the Namsan granites is well developed and mainly composed of cubic corestones. Petrographical features of the stones used for the stone-built cultural properties are compared with those of the granites cropped out nearby. Additionally radiogenic element contents (K, Th, U) were acquired for comparison by gamma-ray spectrometer analysis. Most stones from the stone-built cultural properties in the Bulguksa Temple are very similar to the Namsan granites in terms of petrography, radiogenic elements. On the contrary almost all stones from the Seokguram Grotto share common petrographical, physical and chemical characteristics with the Tohamsan granodiorites. Therefore it can be suggested that the stones in the Bulguksa Temple were supplied from Namsan, and that the stones in the Seokgurarn Grotto were collected at nearby Tohamsan.

• Journal of the Korean association of regional geographers
• /
• v.18 no.1
• /
• pp.71-85
• /
• 2012

Marriage Immigrants have greater impact on local communities than migrant workers and foreign students, all the more because their children are relatively more important. Therefore, this study aims to inquire into the fundamental cause on the choice of residential location of marriage immigrants. Residential segregation is often considered to be one of the social problems that intensify locality of residential district. Although migrant workers and foreign students cannot freely decide their residential location at the outset, they could change their residence later on. However marriage immigrants are not free from the residential location choice continuously. The intentional(involuntary) residential segregation brings differential residence of marriage immigrants. The residential segregation of marriage immigrants is concerned with the close relationship of their ethnic background and the community characteristic with focus on Vietnamese and Filipino. The results of this study could be used basic guideline for community development policy for marriage immigrants.

• Journal of the Korean Geographical Society
• /
• v.47 no.5
• /
• pp.641-653
• /
• 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 association of regional geographers
• /
• v.12 no.5
• /
• pp.595-613
• /
• 2006

In the debates of development gains, the general rule is that it results from actions other than those of the landowner, most notably of the public sector as in granting of permissions for the development of specific land uses and densities or through infrastructure investments, or of socio-economic forces due to a general capital accumulation in space. A huge academic literature has investigated the development gains capture that refers to the process by which a portion of or all land value increments attributed to the community effort are recouped by the public sector. Policy instruments for applying development gains capture are based on deepening land value taxation, financing infrastructure, controling land use. But one of the most basic for the efficient policy implementation is the accurate estimation of development gains. This paper estimates the development gains generated by the total 204 building land projects of Korea Land Corporation and Korea National Housing Corporation since 1995.