• The Journal of Sustainable Design and Educational Environment Research
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• v.19 no.1
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• pp.13-24
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• 2020

The purpose of this study is to analyze and match future teaching-learning methods with learning-space types as customized not only by school grade or grade groups, but also by learning modality. As a result, the following six teaching-learning methods were identified as future teaching-learning methods: flipped learning, deeper learning, collaborative learning, learning through immersive virtual reality, playful learning, and learning through OER(Open Educational Resources). There were also six learning-space types that were identified: playing and discovering space, a making and placement space, a presentation and sharing space, a space for independent study, space as a stage, and space as content(See Tables 8 and 11). Learning-space types and future teaching-learning methods were matched with 22 different types of learning modalities based on the presented degree of utilization by school grade or grade groups(See Table 13).

• Journal of Service Research and Studies
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• v.12 no.1
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• pp.49-68
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• 2022

This study was conducted to design a financial system for the sustainable life of mankind. Human society faces a constant crisis and leads a life while overcoming it. The polarization is intensifying in the process of overcoming the economic crisis or crisis caused by the virus. In a society adopting the capitalist economic system, it is a common phenomenon that polarization intensifies with the passage of time, but since the intensification of polarization can destroy human society as a community, active countermeasures are required. The purpose of this study was to prevent the deepening of polarization by redesigning important financial-related systems from the perspective of human life and maintenance of human society. Through the history of mankind, monetary and financial systems related to sustainable society have been analyzed, and a financial system model that is ideal for the modern and future society and is sustainable in the long term has been derived. The conditions for a long-term sustainable financial system should be a model that can solve the problems of the current system, such as deepening polarization, and a model that is faithful to the characteristics of the modern economic society and the essence of sustainable life. And it can be sustainable only if it is based on the common principles of human society. It should be a model that guarantees core values such as growth and equality that human society demands. After analyzing the problems of the current economic system and analyzing the conditions required for the new system, the basic axioms that the new financial system should be based on were presented, and a desirable model was derived based on this. The structure of the derived model and the specific operation model were presented. In the future, follow-up studies are needed to concrete this model.

• 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.

• Hwankyungkyoyuk
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• v.18 no.2 s.27
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• pp.23-30
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• 2005

The purpose of this study is to develop School Agenda 21 to activate environmental education at schools. In detail, this study is intended to develop operating procedures, major issue areas or domains, and instructions on the preparation for School Agenda 21. School Agenda 21 means the action plan which students, teachers, parents, and other concerned parties (including office of education, local municipal bodies, and NGOs) write under agreement with respect to their respective roles in order to activate environmental educations oriented toward sustainable development. The results of this study are as follow. First, the operating procedures for School Agenda 21 consist of seven steps; organization, diagnosis of problems, setup of targets or objectives, development of codes of behavior, system establishment, practices and reviews, and evaluation and feedbacks. Second, major issue areas for School Agenda 21 are classified into six; school management, class operation, independent subject activity, separate subject activity, non-subject activity, and external relations of school. Third, instructions of the preparation of School Agenda 21 address these 10 concepts; balance, unification, continuity, daily routine, linkage, environmental justice, participation, peculiarity of schools and classes, regional peculiarity, and concreteness, which consider 7 principles for environmental education, levels of learners, regional features, and concreteness. School Agenda 21 developed from this study converts existing environmental education toward sustainable development environmental education, and developed for the purpose to activate school environmental education, but ultimate purpose of this study are realizing sustainable society, sustainable future to realize education for sustainable development. So School Agenda 21 is expected to important performance way making possible Local Agenda 21, National Agenda 21, Agenda 21 as if education, public recognition and discipline contents of the 36 chapter of Agenda 21.

• Nuclear Engineering and Technology
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• v.52 no.4
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• pp.797-801
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• 2020

Most of irradiated graphite that should be disposed comes from moderators and reflectors of nuclear power plants. The quantity of irradiated graphite could be higher in the future if high-temperature reactors (HTRs) will be deployed. In this case noteworthy quantities of fuel pebbles containing semi-graphitic carbonaceous material should be added to the already existing 250,000 tons of irradiated graphite. Industry graphite is largely used in industrial applications for its high thermal and electrical conductivity and thermal and chemical resistance, making it a valuable material. Irradiated graphite constitutes a waste management challenge owing to the presence of long-lived radionuclides, such as ¹⁴C and ³⁶Cl. In the ENEA Nuclear Material Characterization Laboratory it has been successfully designed a procedure based on the exfoliation process organic solvent assisted, with the purpose of investigate the possibility of achieving graphite significantly less toxic that could be recycled for other purpose [1]. The objective of this paper is to evaluate the possibility of the scalability from laboratory to industrial dimensions of the exfoliation process and provide the prototype of a chemical plant for the treatment of irradiated graphite.

• Journal of Science and Technology Studies
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• v.12 no.2
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• pp.81-116
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• 2012

Transition toward sustainablity being in progress in a variety of areas including climate, energy, household, transportation. This study analyzed system transition and backcasting of its management with case of sustainable transportation, foods, household system transition in the Netherlands. Backcasting has become a popular approach for sustainability taking a more reflexive perspective and looking back to the participatory experiments. In the Netherlands, participatory backcasting utilized as s innovative approach for long-term strategy for sustainability, based on stakeholder involvement, construction of normative sustainable futures, stakeholder leaning. In this study, we can be understood that transition management requires the participation and contribution of business, government, research and the public & public interest groups and backcating is tool leading to a sustainable future vision, stakeholder involvement. To create a new path toward sustainablity, it requires integrated consideration of related policy perspectives and participatory backcasting aiming at system innovations for influencing transitions.

• Journal of Korean Society of Forest Science
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• v.90 no.5
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• pp.619-631
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• 2001

Since the development of a new paradigm of sustainable forest management, concerns have been focused on how the sustainability of forests will be assessed and measured objectively. This study examined the conceptual displacement on what is sustainability of forests, and analyzed the progress made by international and regional initiatives on criteria and indicators for sustainable forest management in terms of comparability and compatibility. Regarding data availability and applicability of criteria and indicators for sustainable forest management, the data reports gathered from Montreal Process member countries were analyzed. Within this context, Korean case were examined, using all possible existing information sources such as Forest Statistics, on 6 items of concepts of criteria and indicators, degree of difficulties, measurement units, data availabilities, problems and needs of future improvements for data gathering. The study also analyzed the applicability of criteria and indicators for sustainable forest management.

• Proceedings of the KSR Conference
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• 2002.05a
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• pp.543-548
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• 2002

Railroad has been one of major public transportations with the advantages of safety and schedule accuracy. However, the sustainable development will be the first principle in order to save the earth environment in the future, and the only transportation that satisfies it can continuously survive. Transportation has caused air pollution severely. Thus, the most environment-friendly means of transport should be chosen to maintain clean environment in the 21st century. Railroad is currently the best choice to fulfill the mission. But, the overall railroad technologies should be developed in consideration of clean environment to be a future leading transportation.

• Bulletin of Korea Environmental Preservation Association
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• v.26 no.9_10
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• pp.8-10
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• 2004

1987년 3월 세계환경개발위원회에서 발간한 일명 '브룬트란트 보고서' 라고 불리우는 보고서 "우리 공동의 미래(Our Common Future)"에서 "지속가능한 발전"개념이 제시되었다. 보고서에 제시된 지속가능한 발전이란 '미래세대가 그들의 필요를 충족시킬 능력을 저해하지 않으면서 현 세대의 필요를 충족시키는 것'(원문 : Sustainable development is development that meets the meeds of present without compromising the ability of future generations to meet their own needs)으로 이해되고 있다. 이러한 개념적인 지속가능한 발전을 실현시키는 구체적인 방법을 청정기술이 제공하고 있으며, 청정생산은 지구환경 문제를 사후처리 또는 치유하는 개념의 접근 방법이 아니고 사전예방적 전략이다.(중략)

• Proceedings of the KSFDT Conference
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• 2006.04a
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• pp.99-113
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• 2006

With the economy reform carried on deeply step by step, forestry industry is playing a more and more important role in the country's economy. How to use the limited resources to make the largest economical benefit is a key point for the industry development, however it is exciting that our forest resources is on sustainable development gradually and forestry output value is also increasing every year, input and export volume is enlarged fast, add to reasonable strategy, no doubt that China's forestry can achieve a prosperous future.