• Journal of Digital Convergence
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• v.17 no.9
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• pp.193-198
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• 2019

In smart cities around the world, urban environments have become more convenient due to information and communication technology(ICT). However, extant studies reveal that the level of life satisfaction of citizens has not improved compared to that of the pre-smart city and citizens are skeptical about the role of the smart city. This is largely because local culture and needs were neglected during the planing and development of the smart city. The research was conducted on Cambodia as a pilot site and our findings indicate that middle age group's population is significantly small and the society is at risk of losing its culture. Therefore, this paper opens up various ways of embedding cultural programs using technology in order to pass down cultural heritage to young generation, provide an emotional attachment to the inhabitants and further build up a new phase of cultural legacy. This will engender cultural uniqueness to the city and intrigue tourists around the world resulting in the growth of the tourist industry. This research will contribute locally by providing a sense of community to the public and globally by suggesting applicable methodology to other cities that are under the similar context.

• Environmental and Resource Economics Review
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• v.28 no.1
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• pp.39-59
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• 2019

The Korean Demilitarized Zone (DMZ) has the great ecosystem as all the artificial activities in DMZ have been prohibited over half a century. The ecosystem should be conserved even after the reunification of Korea and hence the conservation plan should be established not after the reunification but before it. It requires a considerable budget to conserve DMZ, considering management of ecology resource, recovery, and research. The objective of this paper is to analyze a fund-raising measure for DMZ conservation, using economic incentives mechanism when multiple developers participate in the auction to get the right to develop North Korean regions, have private information about their sunk costs and pay a part of their profits for the fund. First, we analyze the real option model to decide the optimal investment time. Second, we construct the auction for bidders not to misrepresent their private information, based on Bayesian Nash equilibrium.

• Journal of the Korea Institute of Information and Communication Engineering
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• v.23 no.2
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• pp.223-228
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• 2019

Recently, the United States has been trying to strengthen its cybersecurity by upgrading its position as an Unified Combatant Command that focuses on the Cyber Command in the United States, strengthening operations in cyberspace, and actively responding to cyber threats. Other major powers are also working to strengthen cyber capabilities, and they are working to strengthen their organization and power. The world demands economic power for its own interests rather than its own borders. But Cyber World is a world without borders and no defense. Therefore, a cyber weapon system is necessary for superiority in cyberspace (defense, attack) for national cybersecurity. In this paper, we analyze operational procedures for cyber weapons operation. And we design cyber weapons to analyze and develop the best cyber weapons to lead victory in cyberwarfare. It also conducts cyber weapons research to solve the confrontation between Cyber World.

• Journal of the Korean Institute of Gas
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• v.23 no.1
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• pp.1-11
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• 2019

The Korean government has tried to introduce pipeline natural gas from Russia, instead of liquefied natural gas from Middle East Asia since 1990s. While this energy cooperation in North East Asia has been discussed in real politics and academic societies, the previous studies have shown the limits on policy implication because they just suggest necessity and possess the problems of weak theoretical frameworks. Therefore, this study tries to analyze the motivations, conditions, and stages for energy cooperation in this region from the viewpoint of economic integration theory. As a result of analysis, these countries in North East Asia have only one motivation, namely economic interest. On the contrary, they have several conditions including real benefit, complementation in economic structures, and convergence in policy goals. In conclusion, this study suggests that low level cooperation such as preferential trade agreement in the field of natural gas is possible and necessary in North East Asia.

• Pediatric Infection and Vaccine
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• v.28 no.2
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• pp.57-65
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• 2021

School closures during the coronavirus disease 2019 (COVID-19) pandemic have been outlined in studies from different disciplines, including economics, sociology, mathematical modeling, epidemiology, and public health. In this review, we discuss the implications of school closures in the context of the current COVID-19 pandemic. Modeling studies of the effects of school closures, largely derived from the pandemic influenza model, on severe acute respiratory syndrome coronavirus 2 produced conflicting results. Earlier studies assessed the risk of school reopening by modeling transmission across schools and communities; however, it remains unclear whether the risk is due to increased transmission in adults or children. The empirical findings of the impact of school closures on COVID-19 outbreaks suggest no clear effect, likely because of heterogeneity in community infection pressure, differences in school closure strategies, or the use of multiple interventions. The benefits of school closings are unclear and not readily quantifiable; however, they must be weighed against the potential high social costs, which can also negatively affect the health of this generation.

• The Journal of the Korea Contents Association
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• v.22 no.9
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• pp.712-726
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• 2022

The purpose of this study is to find out what discourse the newspaper's articles produce and distribute about 'drug addiction' and to reveal the topography and meaning of the discourse. Data were collected by searching 'drug' 'drug addiction' as keywords for news articles in four daily newspapers in Korea. As a result of analyzing using Norman Fairclough's critical discourse analysis, first, the 'crime-punishment' discourse was dominant in textual analysis. Drug addiction is a social evil and a serious crime such as sex crimes, child crimes, and violence, so it should be strictly punished. Second, in the discourse practice analysis, drug addiction is a mental disease that needs treatment, so systematic management by the state is required. Third, in the socio-cultural practice analysis, drug addiction is a means of making money for economic benefit, is related to corruption of political power, and is an object that should be strongly controlled to prevent drug crimes from threatening the foundation of the state. Culturally, drug addiction stems from the motivation of pleasure seeking, and is the result of moral degradation. Through this analysis, the conversion to the 'disease-treatment' discourse and drug policies centered on treatment and rehabilitation were suggested as alternatives.

• Journal of Korea Port Economic Association
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• v.38 no.2
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• pp.165-183
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• 2022

The main purpose of this paper is to present a competitive strategies for the Logistics Warehouses of Busan New Port. Based on the survey conducted by the Logistics Warehouses of Busan New Port experts, the categorized factors were compared using the analytic hierarchy process (AHP) to assess the importance of each factor and sub-factor in the case of the Logistics Warehouses of Busan New Port. This is a quantitative study that conducted a face-to-face survey on employees and related public officers at the Logistics Warehouses of Busan New Port. The final sample size consisted of 49 people, including workers at the Busan New Port logistics warehouses and related local customs officers. The data were coded in Microsoft Excel and the imprtance of SWOT factors was derived using "the I make it" program developed by Decision Sience, and it was analyzed using the AHP method. This study quantifies the importance of the strengths, weaknesses, opportunities, and threats factor of the Logistics Warehouses of Busan New Port and presents strategic guidelines for the key factors for the development of the Logistics Warehouses of Busan New Port. This research provides strategic guidelines to Korea for the development of the Logistics Industries, and development of the Logistics Warehouses of Busan New Port.

• Journal of the Korea Society of Computer and Information
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• v.14 no.8
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• pp.137-144
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• 2009

On July 23th, 2009, the newly-revised copyright law was reflected the free trade agreement which occurred between the United States and the Republic of Korea. The agreement is expected to have positive effects such as competition as well as the social efficiency in the field of intellectual property. Nevertheless, Korean government should pay much costs, Therefore, we should minimize the cost in a short run and maximize the benefits we could obtain out of the agreement in a long run. However, we are not prepared to improve economic value of the intellectual property rights. Specifically, it should be noted that the aspects of law execution to protect not only the intellectual property rights. If we manage to get the utmost out of the agreement, we could be going through the transition from a consumer nation of intellectual properties to a producer nation.

• Proceedings of the Korean Institute of Navigation and Port Research Conference
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• 2023.11a
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• pp.175-176
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• 2023

1973년 최초로 서비스를 시작한 GPS는 전 세계 60억명 이상이 사용 중이며 거의 모든 사업에 큰 영향을 미치고 있으며, 자동차, 농업, 해양, 일반 안전, 레저활동, 지형공간정보, 항공, 금융, 통신 등 산업 전반에 걸쳐 경제적 이익이 약 1조4천억 달러에 이르는 글로벌 시스템이라 할 수 있다. 최근에는 미국의 GPS 뿐만 아니라 유럽, 러시아, 중국 등 세계 주요국들은 자국의 독자 위성항법시스템을 구축하고 있으며, PNT 정밀성 향상을 위한 위성항법보강시스템의 개발 또한 주요국 중심으로 이루어지고 있다. 4차산업기술의 발달로 인해 다양한 산업의 상용화와 대중화에 따라 PNT 정보의 고정밀, 고신뢰에 대한 수요도 급증하고 있으며, 이에 대한 응용기술 분야에 대한 시장도 급속하게 성장하고 있다. 우리나라에서도 KASS와 같은 위성항법보강시스템 구축을 추진하고 있으며, 향후 독자 위성항법시스템인 KPS의 개발도 진행중에 있다. 그러나 고도 23,000km에서 송출하는 위성신호의 전파교란·기만에 대한 취약성과, 도심지와 같은 위성신호 수신이 열악한 환경에서는 고정밀·고신뢰 PNT 정보를 제공하기가 현실적으로 어려운 실정이다. 이러한 GPS의 취약성을 보완하기 위해 지상기반의 PNT 정보제공 시스템 구축의 필요성이 증대되고 있으며, 전세계적으로 상호보완적 PNT 시스템의 구축·기술개발에 대한 연구가 다양하게 이루어지고 있다.

• Journal of Life Science
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• v.18 no.9
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• pp.1186-1193
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• 2008

The growth performance of pangasiid catfish (Pangasius hypophthalmus), silver carp (Hypophthalmichthys molitrix) and catla (Catla catla) was evaluated in polyculture at varied combinations and stocking ratios in earthen pond for a period of 16 weeks. Combinations of pangasiid catfish, silver carp and catla with the total density of 30,000 fish per hectare were evaluated. A commercial pelleted feed containing 28% crude protein and 6% lipid was fed only to pangasiid catfish at the rate of 8% of body weight during the first six weeks, 6% during the second six weeks and 4% thereafter twice daily. The growth and feed utilization efficiency of pangasiid catfish were found similar in all treatments. The growth of silver carp was markedly decreased upon the increase of its own stocking density. The highest growth of silver carp achieved in polyculture of pangasiid catfish, silver carp and catla at 2:1:1 ratio where density of silver carp was lowest. The growth of catla was found to be affected by the presence of silver carp. The growth rate of catla markedly declined with the increase of silver carp density. The highest growth of catla obtained in polyculture of pangasiid catfish only with catla stocked at 1:1 ratio. The highest yield and economic return achieved in polyculture of pangasiid catfish, silver carp and catla at the ratio of 2:1:1 due to higher growth of silver carp and higher market value of catla. The water quality conditions in all different treatment ponds were within optimum ranges throughout the culture period and the values did not show any significant variation (p>0.05) among the treatments.