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황태성(Taesung Hwang),이만석(Manseok Lee) 육군사관학교 화랑대연구소 2021 한국군사학논집 Vol.77 No.2
China is inaugurating an era of bipolar order in East Asia with the United States as its chief rival. China’s economic and military growth and its competition with the United States are exerting a major influence on the national security strategies of East Asian countries, including South Korea. In the era of great-power rivalry, the regional countries need to recalculate their expected gains and losses; South Korea, for example, faces increasing pressure to choose between the United States and China. As the power dynamics in East Asia change, China is modernizing and reforming its military to increase its influence in East Asia and protect its geographically expanding national interests. At the same time, Chinese leaders are using military diplomacy and security cooperation to make the case that reinforcing the expeditionary capability of the People’s Liberation Army plays a positive role in regional security. China also intends to enhance deterrence by increasing interoperability with other countries through joint military exercises. Due to China’s growing military power and geographical proximity to South Korea, understanding and evaluating China’s evolving military strategy is particularly urgent and will provide valuable implications for the national security strategies of South Korea. Using open-source data, this study aims to analyze what China’s expansion of its national interests and the impact of this expansion on the security environment mean in terms of its current and evolving military strategy. By doing so, this paper will provide useful knowledge in establishing South Korea’s own evolving national security strategy.
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Double Covering 모형을 활용한 인천광역시 소방시설 최적위치 선정에 관한 연구
백승관(Seung-Kwan Baek),황태성(Taesung Hwang) 한국SCM학회 2021 한국SCM학회지 Vol.21 No.2
The purpose of this study is to find the optimal locations of fire fighting facilities in Incheon to prevent the spread of accidental fires and efficiently extinguish them. In the event of a large fire difficult to cope with in one fire fighting facility, additional support from nearby facilities will be necessary. The model proposed in this study firstly ensures that all demand nodes in a network will be able to be reached from the minimum number of facilities in a given time. At the same time, we locate the given number of facilities so that they can cover as many demand nodes as possible multiple times. This problem can be considered as a facility location problem which aims at maximizing the number of demand nodes that are covered at least twice while minimizing the number of facilities needed. The proposed model is applied to conduct a case study using road network information and administrative district data in Incheon.
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연결성을 고려한 최대지역 커버문제를 활용한 재해구호 창고 최적위치 분석
류규상(Kyusang Ryu),황태성(Taesung Hwang) 한국SCM학회 2019 한국SCM학회지 Vol.19 No.1
This study proposes a method to find the optimal locations of disaster relief warehouses, a sort of humanitarian logistics facilities to store disaster supplies such as a first-aid kit, bottled water or protective clothing. In the event of a disaster, necessary goods need to be distributed to as many people as possible from the disaster relief warehouses. Moreover, distance between two warehouses can be less than a predetermined length so that immediate supply will be possible in the case of stock out in one facility. Therefore, a connected maximum covering problem has been proposed in this study to cover the most demand in the case of an emergency with a set of connected facilities. A case study is conducted to investigate the location of additional disaster relief warehouse considering current operating system in South Korea. This study will be useful for decision makers or transportation planners in humanitarian logistics to reduce adverse impact of various disasters on the supply chain.
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전선영(Seon-Young Jeon ),황태성(Taesung Hwang) 한국SCM학회 2018 한국SCM학회지 Vol.18 No.1
The amount of medical waste generated in South Korea has been consistently increased in the past 10 years. Although medical waste disposal companies currently in operation provide enough capacity to manage them, demand forecast shows that the disposal need will exceed the total capacity of all the disposal companies in the near future. This paper develops a facility location model considering two possible scenarios to provide alternative solutions to this problem; scenario 1 proposes constructing additional facilities given a set of candidate locations, and scenario 2 suggests expanding capacity of the existing facilities. A case study is conducted using forecasted disposal demand in year 2020 when the current disposal capacity will be insufficient. The result demonstrates that scenario 1 generates better solution than scenario 2 in terms of the total cost, where four more facilities will be built. In the case of opposition by residents near the candidate locations, scenario 2 will be able to provide the second-best solution.
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공우석(Woo-seok Kong),신이현(E-hyun Shin),이희일(Heeil Lee),황태성(Taesung Hwang),김현희(Hyunhee Kim),이난영(Nanyoung Lee),성지혜(Jihye Sung),이슬기(Slegee Lee),윤광희(Kwanghee Yoon) 대한지리학회 2007 대한지리학회지 Vol.42 No.6
쯔쯔가무시증 환자 발생의 시ㆍ공간적 분포를 기후, 서식환경 변화 등 환경생태요인과 관련하여 질병지리적 측면에서 분석하였다. 쯔쯔가무시증은 1951년에 보고된 뒤 1986년에 재발했고, 1998년과 2004년부터 급증하였다. 계절별로는 11월(58%)과 10월(33.2%)에 주로 노인층에서 발병한다. 남부평야지대에 발생하던 쯔쯔가무시증은 점차 동부산지지대를 제외한 전국으로 확산되었으며, 경기도 화성시는 발병자가 급증한 대표지역이다. 발병자가 급증한 것은 기후와 토지이용 변화 등 환경생태요인이 복합적으로 작용한 결과로 본다. 전국적으로는 연평균기온이 상승하고 연평균강수량이 감소하면서 쯔쯔가무시증 환자가 증가하였다. 그러나 사례조사지역인 화성시, 합천군 등에서는 여름철 기온이 상승하고 강수량 많은 해에 환자가 증가했다. 여름에 기온이 높고 상대적으로 건조하면 식생이 무성해져 털진드기의 생장과 번식이 활발해진다. 이어서 가을이 온화해지면서 털진드기 활동이 활발해지면서 환자가 급증한 것으로 본다. 농촌에서 환자가 많은 것은 1980년대 이후 토지이용 변화에 따라 마을과 경작지 주변에 늘어난 관목숲, 풀숲을 중심으로 쯔쯔가무시증의 매개체인 들쥐류와 털진드기가 번성하면서 질병을 확산시킨 결과로 본다. The time-spatial distribution of Scrub typhus and its relationship with environmental ecology, such as climate, and habitat change are analyzed in respect of the geography of disease. Scrub typhus was firstly reported in 1951, and reemerged in 1986 mainly in southwestern Korea. Later it has sharply increased and spreaded out toward whole country in 1998 and 2004, except mid-eastern mountainous region. Hwasung City is the typical example of sudden upsurge of Scrub typhus. High incidence of Scrub typhus patients might due to elevated temperature and decreased precipitation during the summer, as well as milder autumn. Sharp increase of Scrub typhus patients at rural area since 1980’s might also be the result of the rapid changes of land use pattern, which eventually have contributed for the active development of dense vegetation and propagation of chigger mites around cultivated land.
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