• Journal of Preventive Medicine and Public Health
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• 제45권1호
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• pp.47-59
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• 2012

Objectives: This study was conducted to observe recent changes in adolescents' dietary behavior and indirectly evaluate the effects of the government's nutritional policies in Korea. Methods: We analyzed the secular trends in seven dietary behaviors using the Korea Youth Risk Behavior Web-based Survey data from 2005 to 2009. Through literature review, we included the policies implemented for the improvement of adolescents' dietary behaviors during the same periods. Results: The significant linear trends were observed in all dietary behaviors (p<0.05). Overall, all behaviors except the fruit intake rate were desirably changed during five years but undesirable changes were observed between 2008 and 2009 in all behaviors. Within those periods, several policies were implemented including 'Ban on carbonated-beverages in school', 'Green Food Zone', etc. Despite confirmed evidence of their effects, the policies on individual behavior such as nutrition education didn't influence the prevalence of dietary behaviors because they were conducted to too limited persons. Polices on the school environmental improvement, such as ban on carbonated beverage in school, were more effective because they decreased the exposure of undesirable food environment. However, for effect of Green Food Zone improving community environment we couldn't come to a conclusion because of too short period after full implementation. Conclusions: Among government nutrition policies conducted from 2005 to 2009, those on environmental improvement, especially in school, were more effective than those on individual behavior. Therefore, the development and implement of policies on school environmental improvement are needed in Korea.

• 농촌계획
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• 제25권1호
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• pp.51-65
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• 2019

This study developed diagnostic system to understand the level of welfare cultural service and infrastructure in rural areas. The applicability was reviewed through the Delphi survey and the sample survey of 60 villages. The diagnostic indicators consist of three areas: the demand area, supply area, and delivery area. The demand area consists of 8 indicators, 25 indicators for welfare services and infrastructure (healthcare, social welfare) and 32 indicators for cultural services and infrastructure (culture, education, leisure sports). The service delivery area was divided into service supply area access and traffic accessibility (public transport use status and rural transport model status) by each indicator. A diagnostic system was applied to 60 villages. Services and infrastructure for rural welfare and culture were supplied more in the Si area than Gun area. The delivery area was easier to access the Gun area than Si area. In the case of traffic access, public transportation was more frequently used in the Si area than Gun area, and the rural transportation model was found to have a relatively large amount in the Gun area compared to Si area. The diagnosis system about services and infrastructure for rural welfare and culture will provide information necessary for establishment and decision making of regional development policy taking into account characteristics of rural areas in the future.

• 자원환경지질
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• 제53권6호
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• pp.793-807
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• 2020

그린뉴딜정책의 실현은 석탄을 연료에서 원료로 활용분야로의 전환을 촉진시킬 것이다. 석탄은 수소의 생산, 인조 흑연 및 활성탄의 제조 원료로 활용될 수 있다. 석탄은 Steam carbon(SC) 반응과 Water-Gas Shift(WGS) 반응 및 탄산화 반응을 통하여 수소를 생산할 수 있으며, CO2격리기술과 연동되어 사용되어야 한다. 인조흑연은 실리콘이나 철 등의 무기촉매의 존재하에서 탄화도가 높은 무연탄 등을 2400~2800℃의 흑연화 온도까지 열처리함으로서 제조될 수 있기 때문에 무연탄은 석유계 피치에 비해 원료 가격경쟁력 측면에서 잠재성이 있다. 한편, 최근 목질기원의 활성탄에 필적하는 넓은 비표면적 혹은 많은 양의 미세기공을 가진 석탄기원의 활성탄이 제조될 수 있음을 여러 연구를 통해 확인되었다. 따라서 석탄기원의 활성탄은 목질기원의 활성탄을 대체할 수 있을 것으로 기대된다.

• 한국수소및신에너지학회논문집
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• 제31권6호
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• pp.605-613
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• 2020

In July and October of this year, the government announced the 'Green new deal plan within the Korean new deal policy' and 'Strategies for proliferation of future vehicles and market preoccupation'. And, in response to changes in the global climate agreement, it has decided to expand green mobility such as electric vehicles and hydrogen electric vehicles with the aim of a "net-zero" society. Accordingly, the goal is to build 310 hydrogen refueling stations along with the supply of 60,000 hydrogen vehicles in 2022, and the hydrogen infrastructure is being expanded. however, it is difficult to secure hydrogen infrastructure due to expensive construction costs and difficulty the selection of a site. In Korea, it is possible to build a mobile hydrogen station according to the safety standards covering special case of the Ministry of Industry. Since the mobile hydrogen station can be charged while moving between authorized place, it has the advantage of being able to meet a large number of demands with only one hydrogen refueling station, so it is proposed as a model suitable for the early market of hydrogen infrastructure. This study demonstrates the establishment of a hydrogen refueling station by deriving a virtual accident scenario for leakage and catastrupture for each facility for the risk factors in a mobile hydrogen station, and performing a quantitative risk assessment through the derived scenario. Through the virtual accident scenario, direction of demonstration and implications for the construction of a mobile hydrogen refueling station were derived.

• 인간식물환경학회지
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• 제23권6호
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• pp.667-681
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• 2020

Background and objective: Recently, there has been an increasing need for relaxation and familiarity with nature in residential and living spaces faced daily by urban residents, leading to a growing social interest in urban gardens. The aim of this study was to determine how gardens in a city provide physical and social benefits, comparing cases in Korea and overseas. Methods: We used the keywords "garden" and "city" for Korea, and "urban," "garden," and "green" for overseas. We then determined the Korean and overseas research trends in urban gardens by analyzing 63 Korean and 90 overseas articles deemed suitable for this study. Results: As to the types of urban gardens, the most significant type was community gardens, both in Korea and overseas (30.2% and 48.6%, respectively), followed by rooftop gardens in Korea (22.2%) and kitchen gardens overseas (22.2%). Due to the narrow and complex urban structure in Korea, people focus on using rooftop, wall, and alley spaces, and tend to arrange container-type flexible gardens. Overseas there has been a focus on promoting health and reducing food inequality through allotment and kitchen gardens, and a tendency to use a larger area as a fixed form than Korea. In addition, it was found that gardens in urban areas had a positive effect on urban biodiversity. Conclusion: To sum up, gardens in Korea are close to living spaces, and gardens overseas influence the ecosystem with an emphasis on food production. Therefore, creating urban gardens is a method of urban regeneration with a high utility that goes beyond mere food production, both in Korea and overseas, providing comprehensive benefits for the environment (37.73%) and society (62.27%). As such, continuous research on this area of study is needed to create policy guidelines for Korea.

• 국제학술발표논문집
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• The 3th International Conference on Construction Engineering and Project Management
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• pp.669-675
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• 2009

As the use of new and renewable energy is one of the ways by which the exhaustion of fossil fuels and the other existing environmental problems can be addressed, a policy of spreading information regarding it and of conducting R&D related to it is currently being implemented in advanced countries. In the construction field, the concept of "green building" was born, and the application of this concept has increased, with the end in view of achieving energy savings, resource savings, and recycling, and of conserving the natural environment. In this context, the government of Korea amended the "Law on the Development, Use, and Promotion of New and Recycled Energy" in 2004, which contains 11 provisions related to new and renewable energy and their sources, including solar and geothermal energy as well as sunlight, water, rainfall, and organisms. Since solar-energy should be used instead of fossil fuels by converting sunlight directly into electricity, many researches on this subject are in progress. There are few researches, however, employing the economic approach to the subject. Thus, in this study, an economic assessment of the solar-energy system was conducted using both life cycle cost (LCC) analysis and sensitivity analysis. The results of the LCC analysis show that the solar-energy system will become economically better than the fossil fuel system after 16 years, although the initial construction cost of the solar-energy system is higher than that of the fossil fuel system. The results of this study are expected to be used in selecting an eco-friendly and economical solar-energy system when the construction of a green building is planned.

• 한국수소및신에너지학회논문집
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• 제33권6호
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• pp.660-673
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• 2022

In achieving carbon neutrality and the hydrogen economy, the estimation of H₂ cost is critical in terms of CCU technologies. This study analyzes LCOH of hydrogen produced by the carbon utilization unit with methane reforming and CO₂ from thermal power plant. LCOH for H₂ made with CO is estimated in three ways of Joint Cost Allocations with financial performance risk assessment. Regarding cost analysis, the zero value of LCOH is $6,003/ton. We found that the CCU technology has economic feasibility in terms of profitability. The sensitivity analysis result shows that the input ratio is more influential to the LCOH than other variables. Risk analysis presents the baseline price of zero value of LCOH - $8,408/ton, which is higher than the cost analysis - $6,003/ton. Mainly, the price variability of natural gas primarily affects the LCOH. The study has significant value in analyzing the financial performance risks as well as the cost of H₂ produced by a Plasma-based CCU system.

• 산업진흥연구
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• 제8권2호
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• pp.45-59
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• 2023

오늘날 기후변화대응을 위한 기술패권 경쟁이 고조되는 가운데 기술 역량을 보유한 기후기술 분야 전문 인재를 양성하기 위한 사업들이 추진되고 있다. 지속가능한 인재양성 사업의 추진을 위해서는 사업 모니터링 및 성과평가가 필수적으로 병행되어야 함에도 불구하고 현재까지 기후기술 분야 인재양성 사업의 성과평가 관련 연구가 부족한 실정이다. 이에 본 연구는 기후변화대응 기술 분야 중 수소 및 정책 분야 인재양성 사업을 통해 수혜 학생들의 R&D 역량과 경력개발 의지를 향상시켰는지 분석하였다. 기후기술 인재양성 사업의 수혜 학생들을 대상으로 설문 조사와 포커스 그룹 인터뷰를 실시한 결과, 학생들 개인별로는 R&D 역량이 향상되었고, 경력개발 자신감이 높아진 것으로 보였다. 대학별로 분석한 결과 동일하게 R&D 역량이 향상되었고, 기술가치 인식이 개선된 것으로 나타났다. 본 연구결과를 통해 학생들이 기후기술 분야의 R&D 역량들은 발굴되었지만 기후기술 분야 경력개발로 이어지기 위해서는 추가 개선이 필요하다는 시사점을 제공하였다.

• 융합신호처리학회논문지
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• 제24권4호
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• pp.249-254
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• 2023

최근 드론을 활용한 농약 살포 임무로 농민들의 작업 시간을 절약하고 농약 및 인체 유해성으로부터 보호되어 드론 보급이 활성화되고 있다. 기존 농약 살포 방식인 광역방제기와 헬기 방제에서 파생된 여러 단점 보완이 가능하다. 최근에는 스마트팜 확대 정책으로 IoT 기반의 다양한 작물의 생육 정보를 실시간 모니터링하고 핵심 변수에 대한 빅데이터 수집을 통해 최적의 생육 환경을 구축하여 수확 증대를 통한 농민의 수익 창출에 적극 활용되고 연관 드론 산업 기술도 발전되고 있다. 본 연구에서는 농업응용 분야의 다양성을 확보하기 위해서 비닐하우스 차광을 위한 작업에 드론을 적용하였고 차광막 살포와 관련된 기술 구현을 구체화하기 위하여 비닐하우스 환경에 대한 기초 연구를 실시하였다. 비닐하우스의 내부와 외부 환경을 고려하여 양질의 빛을 제공하기 위해 드론 노즐의 균일 살포를 위한 노즐설계, 비닐하우스의 투광률 분석, 차광제 도포 실험을 통하여 드론을 활용한 차광임무가 가능하도록 하는 기초연구를 수행하였다.

• 한국농촌건축학회논문집
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• 제26권3호
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• pp.11-18
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• 2024

As the complexity and diversity of modern urban development increases, the importance of external space planning in urban development projects is growing. This study analyzes the importance and characteristics of each major to enhance the utility value of external space, which aims to improve the efficiency of external space planning and ultimately improve the quality of life of residents. To this end, we reviewed relevant literature, legal guidelines, checklists, and guidelines, and derived 17 external space indicators through expert surveys and FGIs, and organized them into five major categories: accessibility, connectivity, suitability, stability and locality, and landscape planning through FGIs with experts in architecture, urbanism, and landscape architecture. As a result of the analysis, urban planning and design majors prioritized planning that considers the hierarchy and characteristics of the landscape structure, securing public space through the connection of open spaces and pedestrian paths, and connecting organic and three-dimensional buildings, streets, and parks; architectural planning and design majors prioritized harmony with the surrounding environment, securing public space through the connection of open spaces and pedestrian paths, and connecting organic and three-dimensional buildings, streets, and parks; and landscape (environmental) and landscape majors prioritized harmony with the surrounding environment, connecting with adjacent buildings, streets, parks, and green spaces, and planning with integrated landholdings. This emphasizes that urban development projects should secure publicness and integration through harmonious connections with adjacent buildings, streets, parks, and green spaces. This study developed evaluation indicators for evaluating the external space planning of urban development projects and quantified them through the hierarchical analysis method (AHP), which will be useful for future policy formulation and practical application in the fields of urban planning and design, architectural planning and design, landscape (environment), and landscape architecture.