• Journal of Korean Society of Forest Science
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• v.103 no.4
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• pp.670-678
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• 2014

This paper analyzes the characteristics of population change and makes the population projection in the mountainous area of Korea. Mountainous areas are defined as local towns (eup or myeon) with forest area more than 70 percent of land area, population density less than 111 people per square kilometer, and plowland area less than 21 percent of land area. The population in mountainous areas has decreased dramatically, while the ageing index has increased over the past two decades. To make the population projection, the cohort-change ratios method is applied. The results revealed that a multitude of young people aged 10 to 39 moved to cities to find education and job chance and some people aged 40 and over moved to mountainous areas as the trends of urban-to-rural migration. This continuing trend will culminate in 680 thousand people in population and 1,035 of ageing index in 2030, which will lead to the unequal land development and inefficient forest management. Thus, policy makers need to develop stimulus plans to revitalize and stabilize the economy of mountainous areas.

• Korean journal of communication and information
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• v.71
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• pp.157-193
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• 2015

The purpose of this study is to critically interpret generational trends in contemporary Korea through understanding the consumer experiences of luxury bag purchases of women in their late 20s and early 30s. Previous studies on luxury consumption tend to focus on an analysis of the value of luxury products as a sign and a symbol, the characteristics or class identity of luxury consumers, or expressive behavior in terms of ideal self-image. While including these factors, this study also expands the scope to a reflexive understanding of the social structural context behind the phenomenon of personal consumption. This was achieved by considering consumption in terms of the style and practice of everyday life, as well as its opportunities and limitations. In particular, we pay attention to how luxury bags are reproduced as media, which is a process that is circulated back to consumption, and through this process, this study reflects on capitalist life and subjects.

• Journal of Digital Convergence
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• v.19 no.7
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• pp.283-287
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• 2021

The purpose of this study is to analyze personalized contents and previews of OTT service based on user experience and to suggest the improvements of the preview viewing experience. Current domestic OTT mobile applications were researched to find out how services are offering content. Plus, the 20s-30s were recruited to analyze user experience. An online survey and in-depth interview were conducted by using Stephen P. Anderson's Creating Pleasurable Interface Model. As a result, preview help users to select content but it doesn't suit their taste. Also, the preview is hard to watch however they want. Therefore, it can be inferred that the preview requires the function for improving efficiency, preference, and accessibility. This study is expected to be used as research material on user experience or preview experience of OTT content.

• Proceedings of the Korean Institute of Navigation and Port Research Conference
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• 2016.05a
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• pp.279-281
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• 2016

평택 당진항은 지난 1996년 3대 국책항만 및 5대 국책개발사업에 선정된 이래 단기간 내 급속한 항만성장을 이룬 결과 지난 10년전과 비교하여 선석규모는 약 3.2배 증가하였으며, 지속적인 항만개발계획에 따라 2030년까지 총 92선석을 개발할 예정이다. 이러한 항만규모의 증가와 함께 선박입출항 및 화물처리실적 또한 2015년도 기준 전국 5위의 규모로 성장하였다. 하지만 항만의 수심, 항로폭, 정박지 규모 등 선박통항을 지원하는 기반시설의 개발은 상대적으로 부족하여 통항안전의 저해요소로 작용하는 바 이러한 항로와 정박지를 중심으로 선박통항안전에 부정적 영향을 끼치는 요소를 분석하고 그에 따른 개선방안을 모색해보았다.

• Korean Journal of Heritage: History & Science
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• v.49 no.3
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• pp.256-269
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• 2016

In September 2015, the United Nations (UN) has adopted the 2030 Agenda for Sustainable Development as a goal of the international community to push forward from the year 2016 to 2030. Accordingly, the United Nations Educational, Scientific and Cultural Organization(UNESCO) has established a new chapter on sustainable development and intangible heritage the through revision of the Operational Directives for the Implementation of the Convention for the Safeguarding of the Intangible Cultural Heritage. Although Sustainable development is a fundamental principle of the Convention for the Safeguarding of the Intangible Cultural Heritage, it is believed that the Convention has not provided guidelines of safeguarding intangible cultural heritage for sustainable development. The Operational Directives provide States Parties with guidelines on the integration of sustainable development and safeguarding of the intangible cultural heritage. Intangible Cultural Property Institution of South Korea was designed to preserve the traditional culture in the economic development process of the industrialization since the 1960s. The institution played a role of cultural support on the development of the modern concepts. Now South Korea should implement intangible cultural heritage policy combined with sustainable development while succeeding the efforts from the former development. This study examines the meaning of sustainable development and how it should be implemented in the intangible cultural heritage policy in South Korea. And this study suggests that the South Korea's intangible cultural heritage policy should foster sustainable development particularly along with social development and human development.

• The Journal of Korea Institute of Information, Electronics, and Communication Technology
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• v.15 no.2
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• pp.95-102
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• 2022

It is a study for the evaluation of the stability of the distribution automation system for the expansion of renewable energy. Through the Renewable Energy 3020 Implementation Plan, the government plans to expand new renewable energy and convert it to participatory energy that improves the quality of life of the people by 2030. The government has set a target of 20% of domestic supply energy for renewable energy generation by 2030. It is planning to establish more than 95 percent of its new facilities with clean energy such as solar power and wind power. By expanding the supply of renewable energy, new energy businesses and distributed power industry were fostered, and short-distance, low-voltage, and small-scale power generation were rapidly expanded rather than large-scale power development in the past. Due to this demand, the importance of power distribution facility operation has emerged and the need for distribution automation system is increasing. This paper discusses the development of a power distribution simulator for the performance and function evaluation of power distribution automation systems and presents the results of an interlocking test with the power distribution automation system. In order to introduce an advanced system into the power distribution system, it is necessary to take advantage of the transmission and distribution system. The DNP3.0 protocol is used in the distribution system and the IEC61850 protocol is used in the transmission and distribution system. It was concluded that the functions and performance of operations were satisfied when these two protocols are mixed and used in the distribution automation system.

• Journal of the Korean Regional Science Association
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• v.33 no.4
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• pp.3-17
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• 2017

This study ranks by developing an urban competitiveness index of major global cities, including seven cities in Korea using data from the Global Cities Forecast (2013) provided by Oxford Economics. The City competitiveness index is selected from 18 indicators including scale index, ratio index, growth rate index while Gini coefficient is used for distribution index. In order to analyze the relationship between the competitiveness index and the distribution index, we use the LOGIT panel regression model. As a result, the increase in income inequality (Gini coefficient) has a negative effect on the economic growth rate in 5-year time lag shown statistically significant. We have compiled global rankings of 770 city competitiveness based upon 19 indicators by combining the global competitiveness index and the distribution index. The trend of rank shows that 7 Metropolitan Korean Cities are expected to decline substantially over the period. In particular, Seoul ranked $59^{th}$ in 2010 and $74^{th}$ in 2015. Its ranking is expected to be decline to $185^{th}$ in 2030. The declining competitiveness of Korean cities is expected to lead to a weakening of Korea's national competitiveness in the long run. Accordingly, it is imperative to identify problems and seek strategic plans to secure global urban competitiveness.

• Journal of the Architectural Institute of Korea Structure & Construction
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• v.35 no.6
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• pp.121-128
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• 2019

There is a big move to build zero-energy buildings in the form of passive houses that reduce energy waste worldwide. Korea has set a goal of reducing its greenhouse gas emissions by 37% by 2030 through the activation of green buildings, such as strengthening the energy levels of new buildings and improving the energy efficiency of existing buildings. The use of insulation with high insulation performance is one of the key technologies to realize this, and vacuum insulation is the next generation insulation that blocks the energy flow of the building. In this study, we measured the bonding structure of dry and wet processing glass fiber core materials and compared the insulation performance of vacuum insulation panel. In addition, the insulation performance of vacuum insulation panel was measured according to the thickness of the laminated core. It can be confirmed that the lamination structure of the core and the lamination thickness are important factors for the heat insulating performance of the vacuum insulating panel.

• Transactions of the Korean hydrogen and new energy society
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• v.35 no.2
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• pp.175-184
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• 2024

This study focuses on investigating the importance of managing greenhouse gas emissions from global energy consumption, specifically examining domestic targets for clean hydrogen production. Using life cycle assessment, we evaluated reductions in global warming potential and assessed the carbon neutrality contribution of the domestic hydrogen sector. Transitioning from brown or grey hydrogen to blue or green hydrogen can significantly reduce emissions, potentially lowering CO₂ equivalent levels by 2030 and 2050. These research findings underscore the effectiveness of clean hydrogen as an energy management strategy and offer valuable insights for technology development.

• 한국신재생에너지학회:학술대회논문집
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• 2009.06a
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• pp.856-856
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• 2009

석유 및 천연가스를 대체하는 자원으로 석탄이 유망하다고 전망하고 있다. 미국에서는 6대 파괴력이 있는 기술로 청정석탄기술이 선정되었고, 한국에서도 15대 그린에너지 중 하나인 청정연료에 석탄전환기술이 포함되어 전략로드맵이 작성되고 있다. 국내에서 추진되고 있는 석탄기술은 석탄가스화를 기반으로 하고 있다. 석탄가스화는 고체연료인 석탄을 $1000^{\circ}C$ 이상의 고온에서 산소와 반응시켜 일산화탄소와 수소가 주성분인 합성가스로 전환하는 기술이다. 석탄을 가스화하면 석탄에 포함된 불순물을 쉽고 완벽하게 제거할 수 있으며 특히 CO2 제거를 값싸게 할 수 있어 청정화가 가능하다. 최근 고유가를 겪으면서 열량이 높은 고급탄의 확보가 어려워지면서 가격이 낮고 수급이 용이한 저급탄을 활용하는 기술의 수요가 발생되어 국내에서 기업을 중심으로 저급탄을 고효율로 가스화하는 기술 개발이 시도되고 있다. 정제된 석탄가스는 성분을 조절하여 촉매에 의해 메탄으로 전환시킬 수 있고, 이렇게 제조된 가스를 합성천연가스(SNG)라 한다. 값싼 저급탄을 사용하면 SNG를 천연가스보다 저렴하게 생산할 수 있다. 국내 기업이 SNG 제조 실증시설을 도입하고, 동시에 핵심기술인 SNG 합성반응공정을 개발하는 사업을 추진하고 있다. 석탄가스를 촉매반응에 의해 디젤 및 �F싸로 전환하는 석탄간접액화기술은 현재 남아공 Sasol사에서 상업적으로 운전되고 있는 기술이나 국내로의 기술이전이 거의 불가능하다. 철을 기반으로 하는 고유 촉매와 scale-up이 가능한 반응기가 핵심인 기술로 국내에서 세미-파일럿급 액화공정 기술개발이 진행중이다. 전세계적으로 석탄액화공장의 수요가 현재의 15만배럴/일에서 2030년 240만배럴/일로 증가한다고 예측된다. 따라서 200조원 이상의 플랜트 시장이 기대되며 국산 가스화, SNG 및 액화기술로 상당부분의 시장을 장악하고자 한다.