• Title/Summary/Keyword: sustainable technology

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Understanding and Attitude to Sustainable Development of College Students for a Nuclear Power Plant Construction in Education for Sustainable Development through Panel Discussion (패널토론을 적용한 지속가능발전교육에서 대학생의 원자력발전소 건립에 대한 지속가능발전 인식과 태도)

  • MOON, Sungchae
    • Journal of Fisheries and Marine Sciences Education
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    • v.27 no.5
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    • pp.1236-1251
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    • 2015
  • This study examined understanding and attitude of sustainable development(SD) of 38 college students in a nuclear power plant construction after education for sustainable development(ESD) through panel discussion. The results were as follows: First, after lesson 66% of students were expected that SD is possible if scientific technology is developed and a frugal life for the protection of environment is carried out. However, the remaining students regarded SD as an ideal concept, because they thought it is not possible to pursue environmental sustainability and socio-economic development simultaneously. Second, students' opinions in the evaluation of constructing a nuclear power plant in three aspects(environment, society and economy) before and after panel discussion were changed as follows; 1) After panel discussion, the objectors increased to 21% in economic evaluation, while the supporters increased to 11% in environmental evaluation. 2) Students majoring in engineering or natural sciences changed their opinions to agree in environmental evaluation because they considered a nuclear power plant safe and eco-energy. However students majoring in social science/business or liberal arts/arts changed their opinions to disagree in economic evaluation because they considered a nuclear power plant as high-cost energy when assessing danger-accidents cost, public consensus cost, operation and maintenance cost, and waste disposal cost. 3) This change of decision-making in students majoring in social science/business or liberal arts/arts after panel discussion was statistically significant(p<0.05). Implications of panel discussion as a teaching and learning method in ESD are also discussed.

Polypropylene Bundle Attached Multilayered Stigeoclonium Biofilms Cultivated in Untreated Sewage Generate High Biomass and Lipid Productivity

  • Kim, Byung-Hyuk;Kim, Dong-Ho;Choi, Jung-Woon;Kang, Zion;Cho, Dae-Hyun;Kim, Ji-Young;Oh, Hee-Mock;Kim, Hee-Sik
    • Journal of Microbiology and Biotechnology
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    • v.25 no.9
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    • pp.1547-1554
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    • 2015
  • The potential of microalgae biofuel has not been realized because of the low productivity and high costs associated with the current cultivation systems. In this study, a new low-cost and transparent attachment material was tested for cultivation of a filamentous algal strain, Stigeoclonium sp., isolated from wastewater. Initially, the different materials tested for Stigeoclonium cultivation in untreated wastewater were nylon mesh, polyethylene mesh, polypropylene bundle (PB), polycarbonate plate, and viscose rayon. Among the materials tested, PB led to a firm attachment, high biomass (53.22 g/m2, dry cell weight), and total lipid yield (5.8 g/m2) with no perceivable change in FAME profile. The Stigeoclonium-dominated biofilm consisted of bacteria and extracellular polysaccharide, which helped in biofilm formation and for effective wastewater treatment (viz., removal efficiency of total nitrogen and total phosphorus corresponded to ~38% and ~90%, respectively). PB also demonstrated high yields under multilayered cultivation in a single reactor treating wastewater. Hence, this system has several advantages over traditional suspended and attached systems, with possibility of increasing areal productivity three times using Stigeoclonium sp. Therefore, multilayered attached growth algal cultivation systems seem to be the future cultivation model for large-scale biodiesel production and wastewater treatment.

The Attitude of Construction Students toward Sustainability in the Built Environment (건축물에서의 친환경개념에 대한 건축공학전공 대학생의 태도)

  • Ahn, Yong-Han;Kwon, Hyuk-Soo
    • Journal of Engineering Education Research
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    • v.11 no.3
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    • pp.70-77
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    • 2008
  • This study investigates the level of the construction student's familiarity and interest in sustainability, their attitude toward sustainability, and the factors for bringing student's attitude toward sustainability. To accomplish the main objectives, this study employes a survey instrument created and developed by the authors. This is a descriptive and correlation study using responses from construction students at the Building Construction department at Virginia Polytechnic Institute and State University in Virginia. The results of descriptive statistics and multiple regression using SPSS version 16 present the following findings. Construction students perceive that they have a relatively high level of familiarity with sustainable construction and sustainability. Secondly, student's attitude toward sustainability is changed based on several factors such as sustainable construction courses, a professor who is interested in sustainability, their interest in the construction industry, university initiative, and the level of sustainability for student's learning facilities. Finally, the construction student's attitude toward sustainability can be improved by offering sustainable construction courses in construction programs, having professors who teach and research sustainability, and adopting sustainable initiatives at the university level such as campus recycling and various sustainable programs.

Performance enhancement of perovskite solar cells using Ag nanoparticles via aerosol technology (에어로졸 기술로 제작된 은 나노 입자를 활용한 페로브스카이트 태양전지 성능 향상 연구)

  • Sua Park;Inyong Park;Dae Hoon Park;Bangwoo Han;Gunhee Lee;Min-cheol Kim
    • Particle and aerosol research
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    • v.19 no.2
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    • pp.21-30
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    • 2023
  • Solar cells, converting abundant solar energy into electrical energy, are considered crucial for sustainable energy generation. Recent advancements focus on nanoparticle-enhanced solar cells to overcome limitations and improve efficiency. These cells offer two potential efficiency enhancements. Firstly, plasmonic effects through nanoparticles can improve optical performance by enhancing absorption. Secondly, nanoparticles can improve charge transport and reduce recombination losses, enhancing electrical performance. However, factors like nanoparticle size, placement, and solar cell structure influence the overall performance. This study evaluates the performance of silver nanoparticles incorporated in a p-i-n structure of perovskite solar cells, generated via aerosol state by the evaporation and condensation system. The silver nanoparticles deposited between the hole transport layer and transparent electrode form nanoparticle embedded transport layer (NETL). The evaluation of the optoelectronic properties of perovskite devices using NETL demonstrates their potential for improving efficiency. The findings highlight the possibility of nanoparticle incorporation in perovskite solar cells, providing insights for sustainable energy generation.

A Systematic Review of Eco-CMF Design Processes for Fashion Products (체계적 문헌 고찰을 통한 패션 제품의 친환경 CMF 디자인 프로세스 분석)

  • So Hyun Lee;Sukyung Kang;Sungjin Park;Young A Koh;Juyeon Park
    • Fashion & Textile Research Journal
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    • v.25 no.1
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    • pp.1-10
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    • 2023
  • An eco-CMF design process is vital to the sustainable development of fashion products concerning both emotional and physical quality factors, thus extending the use phase of the product life cycle. Life cycle assessment (LCA) is widely used in other fields to evaluate environmental impact; However, the method is rarely adopted in fashion. While cooperating with design, technology, and the users, reflecting the CMF design process is an excellent approach to the sustainable development of fashion products. Moreover, it is likely to evoke favorable reactions in users toward products. Therefore, this study aimed to review the sustainable design strategies associated with CMF in the fashion industry. Using a systematic review, 135 papers that met the inclusion criteria were examined from peer-reviewed journal articles published between 1990 and 2022. They contained specific design processes or tools relevant to eco-CMF design. The search used the Web of Science database. After a rigorous search, the final six peer-reviewed journal articles were selected and underwent thorough content reviews. Then, the CMF design tools and frameworks for eco-design featured in the articles were carefully reviewed and analyzed. Finally, we proposed practical guidelines for the sustainable development of eco-CMF design in the fashion industry. The study outcomes revealed the need for concrete eco-CMF design processes, particularly for fashion products. Furthermore, more active research involving eco-CMF design processes for the sustainable environmental impact of fashion products is required.

A Study on the manufacture process design Method for the Sustainable Product Remanufacturing (지속가능한 제품 재제조를 위한 제조공정설계방법론에 관한 연구)

  • Lee, Jong-Beom;Cho, Jai-Rip
    • Proceedings of the Safety Management and Science Conference
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    • 2009.04a
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    • pp.331-336
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    • 2009
  • Recently Environmental issues is Product development for ease of disassembly and recycling requires methodical toolboxes and respective infrastructures of information and communication technology. Therefore, today's designers have a very high level of product responsibility as disassembly is a major cost factor of product recycling. A study on the product redesign Methods and tools for sustainable management.

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An Interdisciplinary Approach to Industry-Based Complex Problem-Solving: Sustainable Policy Solutions to the Malaysian Water Crisis

  • Richards, Cameron;Padfield, Rory
    • Asian Journal of Innovation and Policy
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    • v.5 no.1
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    • pp.55-77
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    • 2016
  • This paper focuses on how an integrated or systemic approach is needed to both investigate and connect different kinds of interdisciplinary inquiry and knowledge within and beyond universities to encourage more productive collaboration with the other three ‘macro stakeholders’ - government, business, and the wider community. In this way universities can and should provide a greater leadership role in sustainability, innovation and policy studies. Such a framework is needed to also help to change the view of many that academics should just play a supporting role of providing specialised technical expertise only to the other macro stakeholders. The interdisciplinary and collaborative framework developed here is applied to the on-going water crisis in Malaysia - an exemplary complex problem-solving basis for seeking sustainable policy solutions to diverse challenges. As further discussed, this was applied also in practice to a multi-stakeholder seminar on addressing the difficult policy challenges of the Malaysian water industry and sector.

Technical Development and Direction of Sustainable Agriculture in Korea (우리나라 친환경 농업의 현황과 발전방향)

  • Park Moo-Eon
    • Proceedings of the Korean Society of Crop Science Conference
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    • 2001.09a
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    • pp.3-33
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    • 2001
  • A review on the technical development and agricultural policy direction for sustainable agriculture has been made to clarify the present conditions of agricultural environment for food production and natural resource conservation and to study prospects and solutions successfully to achieve food safety and environment conservation as the 21st agricultural paradigm. Although great improvement of environmentally sound and resource-conserving techniques, sustainability of Korean agriculture has been damaged by quantitative reduction and quality deterioration of agricultural land resources, insufficient implementation of low-input and organic matter recycling techniques and also improper cropping system. It is concluded that goal of sustainable agriculture can be successfully achieved by further improvement of environmentally friendly techniques, and stronger escalation of national implementation programmes with more financial supports including direct payments for sustainability of agriculture under systematical support and cooperation of AKS (agricultural knowledge system).

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A Study on the Millennium Development Goals and Sustainable Development Goals of UN for Enhancing the Quality of Human Life (인류의 삶의 질을 향상시키기 위한 UN의 밀레니엄 발전 목표(MDGs)와 지속가능 발전 목표(SDGs)에 관한 고찰)

  • Park, Sung Hyun
    • Journal of Korean Society for Quality Management
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    • v.42 no.4
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    • pp.529-542
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    • 2014
  • Purpose: Eight goals in Millennium Development Goals (MDGs) and temporary 12 goals in Sustainable Development Goals (SDGs) as the UN projects are investigated in detail. Methods: Investigation of statistics for life qualities, diseases, and life costs. Results: By examining the shortcomings of MDGs, temporary goals of SDGs are suggested. In addition, four countermeasures are recommended for further consideration. Conclusion: It is necessary to cooperate MDGs with more interest and prepare the new age for SDGs by compensating the shortcomings of MDGs. Finally, this paper suggests creative directions for SDGs which will be supposed to start in 2016.

Usage of Indigenous Material for Sustainable Construction at Mae-Hae, Thailand - Focused on Rammed Earth Method - (태국 매해 지역에서의 지속가능한 건축재료 활용연구 - 흙다짐 공법을 중심으로 -)

  • Kim, Doo-Soon;Jeong, Sang-Mo
    • KIEAE Journal
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    • v.13 no.2
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    • pp.33-38
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    • 2013
  • Limited resources for construction material in the Mae-Hae region, a remote Northern Thailand, acted as an impetus to introduce a new way for constructing their dwellings. The new construction material brought new construction methodology, namely, using earth and bamboo which are indigenous materials, readily available for them to use. Using indigenous material at Mae-Hae region was most ecological and logical method for establishing sustainable dwellings both in terms of monetary and ecological reasons. Prior to the construction at Mae-Hae, Thailand, series of experimental tests on the strength of rammed earth were performed off site at our university and also brought soil samples from the actual job site at Mae-Hae for detailed soil analysis. Through the tests, integrity of the earth and characteristics of the soil were established to build a small senior citizen center as an example. This appropriate technology is expected to contribute to the sustainable construction at Mae-Hae.