• Title/Summary/Keyword: time geography

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Space-time cluster research of R&D industry in Seoul, Korea (서울시 R&D 산업체의 시공간 클러스터 분석)

  • Park, Sun-Young;Kim, Youngho
    • Journal of the Economic Geographical Society of Korea
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    • v.16 no.3
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    • pp.492-511
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    • 2013
  • According to IASB(International Accounting Standards Board), R&D(Research and Development) is defined as a tertiary sector industry combining research and development. Many studies investigated R&D industry clusters in the form of high-tech cluster(Coe et al., 2007). However, these studies only generalized various spatial cluster of R&D industries. In particular, the studies could not considers cluster formation process over time lacking statistical significance in space-time perspectives. This study, therefore, indicates the limitation of recent R&D cluster literature which only considers either time or space. In addition, this study explores space-time clusters in R&D industry together with textile and cloth industry for comparison. Discovering the existence and location of clusters, this study utilized space-time K function and space-time scan statistics. The result shows that R&D industry presents significant clusters only in spatial dimension. No significant clusters were found in space-time dimension. However, textile and clothing industry presents significant clusters in both spatial and space-time dimensions.

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Method to Extract Coastline Changes Using Unmanned Aerial Vehicle (무인항공기를 이용한 해안선 변화 추출에 관한 연구)

  • Lee, Kangsan;Choi, Jinmu;Joh, Chang-Hyeon
    • Journal of the Korean Geographical Society
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    • v.50 no.5
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    • pp.473-483
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    • 2015
  • In a coastal area, a plenty of research has adopted remotely sensed data. This is because longterm interaction between land and ocean makes continuous geographical changes in a broad extent and unaccessible areas. However, conventional remote sensing platforms such as satellite or airplane has several disadvantages including limited temporal resolution and high operational costs. Hence, this study uses a UAV system to detect a coastline and its movement. Result of coastline detection shows how the coastline moves in a day. Time-series coastlines were derived from UAV aerial images through digital image processing. There is a drawback in the stability of UAV compared to the conventional remote sensing platform, but the advantage appears on the economical efficiency. Since the latest studies shows an improvement of UAV for a variety of purposes in many fields, a UAV can also be utilized for regional study and spatial data acquisition platform. geography can also utilize a UAV as a spatial data acquisition platform for regional study.

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The Spatial Diffusion of War: The Case of World War I (전쟁의 공간적 확산에 관한 연구: 제1차 세계대전을 사례로)

  • Chi, Sang-Hyun;Flint, Colin;Diehl, Paul;Vasquez, John;Scheffran, Jurgen;Radil, Steven M.;Rider, Toby J.
    • Journal of the Korean Geographical Society
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    • v.49 no.1
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    • pp.57-76
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    • 2014
  • Conventional treatments of war diffusion focus extensively on dyadic relationships, whose impact is thought to be immutable over the course of the conf lict. This study indicates that such conceptions are at best incomplete, and more likely misleading to explain the spatial diffusion of wars. Using social network analysis, we examine war joining behavior during World War I. By employing social network analysis, we attempted to overcome the dichotomous understanding of geography as space and network in the discipline of conflict studies. Empirically, networked structural elements of state relationships (e.g., rivalry, alliances) have explanatory and predictive value that must be included alongside dyadic considerations in analyzing war joining behavior. In addition, our analysis demonstrates that the diffusion of conflict involves different driving forces over time.

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Children's Understanding of the World and a Rationale for a World Geography Curriculum (초등학생들의 세계에 대한 인지 특성과 세계지리 교육과정 구성의 전제)

  • Song, Un-Gun;Kim, Jae-Il
    • Journal of the Korean association of regional geographers
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    • v.8 no.3
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    • pp.364-379
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    • 2002
  • The purpose of this study is to search for a rationale of world geography curriculum. Elementary school children tend to get impressionistic and distorted information about other countries through snapshot TV programs. But they need to get more balanced understanding about them from the perspective of each country. Children's judgment about other countries, favorable or unfavorable, tends to be emotional, based on the first-order conditions of life in those regions, such as atmosphere, food, and habitat, and the symbolics of the place. But their systematic understanding about the relationship between their own life and the life of other locations or countries tends to be meager. It seems to be partly due to the practice of co-centric curricular construction. The geography curriculum may have to be in relation to other countries, from the regional geography of the third grade on.

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The Relation between Place and Identity in Korea: A Preliminary Study for the Korean Studies (한국인(韓國人)의 장소(場所)와 정체성(正體性): 한국학(韓國學)을 위한 시론(試論))

  • Ryu, Je-Hun
    • Journal of the Korean Geographical Society
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    • v.47 no.1
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    • pp.1-12
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    • 2012
  • Based on the study of the lineage groups around Gyeongju City and the migrants from North Korea, it is recognized that any one of Korean group identities has not been naturally formed over a long time, but socially constructed. One of the project for the Korean human geography orienting toward Korean Studies is to examine, from the place perspective, the complicated and contested identities that modern Koreans are today sharing individually as well as in a group. From such an examination. it can explore specifically the future shape of the Korean identity upon which everybody can agree. To make the project successful, Korean Human Geography needs to start from the study of a specific place that would expose the triangular relations among the three elements: identity, place, ideology or power.

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Revealing Geography of Water in Taebaek City through Actor-Network Theory (행위자-연결망 이론을 통해서 본 태백시 물 공급의 지리학)

  • Kim, Na Hyeung;Kim, Sook-Jin
    • Journal of the Korean Geographical Society
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    • v.48 no.3
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    • pp.366-386
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    • 2013
  • This paper analyzes the drought and restriction on water supply in Taebaek City during the winter season in 2008 using Actor-Network Theory. Actor-Network Theory emphasizes and brings into view the role and act of non-human actors as well as human actors in various environmental issues. The fact that only Taebaek experienced restriction on water supply for 88 days although the winter season drought in 2008 affected the whole nation, requires a synthetic analysis of both human and non-human actors and their relationships and networks embedded in Taebaek City at that time. This paper shows that both human and non-human actors including Taebaek City Hall, Korea Water Resource Corporation, Taebaek citizen, the water supply facilities, Gwangdongdam, obsolete water pipes, the topography of Taebaek, soil, the change of industry, and population interact one another transforming the geography of water in Taebaek. This study helps to understand the complex processes related to drought disasters at a specific local scale and to provide appropriate measures to drought.

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A Study on the Characteristics of Geographic Photos (사진의 기록성과 예술성에서 본 지리사진)

  • Kim, Joo-Hwan
    • Journal of the Speleological Society of Korea
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    • no.72
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    • pp.37-46
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    • 2006
  • The purpose of this study is to provide a basic theory of photogeography. There is a close relationship between photos and fine arts, but lots of differences. For examples photos are arts of cognition, analytic media and time. Geographic photos are photos useful for geography. Geographic-photos are a kinds of academic photos which deals with special meaning of geographic phenomena and cognition of the certain area. According to the nature the photos available for geography, can be grouped into geographic photos and general photos. Geographical ideas, photographical skills and artistic senses are necessary to the photogeographers. Geographic photos are useful for research and educational Purpose. The aspect of research is related to the systematic geography, for example ; geomorphology, historical geography etc. In conclusion, to the photo geographer the geographic idea is more necessary than the skill of photography.

Geomorphic Development of Gnamma at the Summit Area of Mt. Geum, Sangju-ri, Namhae-gun, Gyeongsangnam-do (남해군 금산 정상부의 나마(Gnamma) 지형발달)

  • Hwang, Sang-Ill;Park, Hyo-Jung;Park, Kyung-Geun;Yoon, Soon-Ock
    • Journal of the Korean Geographical Society
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    • v.46 no.2
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    • pp.134-151
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    • 2011
  • The types of gnamma at the summit area of Mt. Geum, Sangju-ri, Namhae-gun, Gyeongsangnam-do are classified and geomorphic developments are investigated. The rocks facing the coast show high distributional density of gnamma due to the salt supply from the coast. The water content rate of gnamma distributed in flat rocks at the summit is highest in the bottom area and lowest in the outside area. Moreover, the quartz grains are fallen due to the weathering of feldspar in the crystalline rocks such as granites and the gnamma are merged and expanded as they develop. The average weathering rate of gnamma is 0.04mm/y and it slowed with time. The results on rate indicate that the gnamma are formed and developed at the present rather than the fossil landform or by subsurface weathering.

Geomorphic development and distributional system of marine terrace in the eastern part of Seopo-myeon, Sacheon-si, Gyeongnam Province (경남 사천시 서포면 동쪽 해안단구 지형 발달과 분포 체계)

  • Yoon, Soon-Ock;Kang, Bong;Park, Chung-Sun;Hwang, Sangill
    • Journal of the Korean association of regional geographers
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    • v.22 no.4
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    • pp.875-886
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    • 2016
  • The eastern coast of Seopo-myeon, Sancheon-si in the South Coast is a bay almost completely separated from open sea by Changseon and Namhae Islands. Marine terraces in this area can be classified into geomorphic surfaces with elevations of 10~12m, 15~18m, 20~24m, 25~28m, 30~33m, 35~38m, 40~45m, 45~50m and 54m. This marine terrace system is similar to the Boryeong area in the West Coast. The geomorphic surfaces distribute along ridges and show relatively small areas. The young and old surfaces show a mixed distributional pattern. This distributional pattern contrasts to the East Coast where the oldest surface farthest from the coastline is parallel to the coast and age of the surfaces increases with a distance from the coast. These seem to result in high energy waves by typhoon that developed wave-cut platform on hill areas with relatively complex relief in a short time.

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Paleoclimate changes and agriculture activitiessince ancient times around Gonggeomji, Sangju-si, Gyeongsangbuk-do, South Korea (상주 공검지 일대의 고대 이후 고기후 변화와 농경활동)

  • Yoon, Soon-Ock;Ahn, Eunjeong;Kim, Hyoseon;Hwang, Sangill
    • Journal of The Geomorphological Association of Korea
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    • v.20 no.4
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    • pp.147-163
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    • 2013
  • Gonggeomji, located at the outlet of intermontane basin in the upper reaches of Dong River, is known as being constructed in the late Unified Silla Dynasty. Extensive wetlands were developed before the construction of embankment at Gonggeomji and very compact silty layers were deposited during dry seasons. Paniceae was cultivated on a dry field in the basin during the early Bronze and Iron Ages. Although it is supposed that agricultural activities on a paddy and dry field prevailed during the Three Kingdoms Age, the indicating layer was not found. As the construction of the embankment, Oryza sativa as well as Paniceae were cultivated in the basin at the same time. The climates during the early Bronze are cool and Iron Ages are estimated to be generally warm. From the late Unified Silla Dynasty and middle Goryeo Dynasty when the embankment was constructed, it was still warm, and then, shows alterations between cool and warm conditions. Since the late Goryeo Dynasty, it gradually became cool.