• 전기학회논문지
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• 제59권10호
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• pp.1832-1838
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• 2010

Aging of transformer insulating material in natural ester insulating oil is compared to that in conventional transformer oil. Aging of insulating paper and insulating oil have been studied by performing accelerated thermal aging test. Sealed aging test vessels containing cooper, laminated core, Kraft paper and insulating oil(natural oil or mineral oil) were aged at $140^{\circ}C$ for 500, 1000, 1500 and 2000 hours. Insulating oils after aging are investigated with total acid number, breakdown voltage and viscosity. Also, degradation of insulating paper after aging is determined using breakdown voltage and mechanical strength. Accelerated aging studies demonstrate a slower aging rate for natural ester insulating oil compared to the rate for conventional mineral oil.

• KIEAE Journal
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• 제8권2호
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• pp.31-40
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• 2008

As horizontal expansion of a city reaches the uppermost limit, on the ground of perpendicular expansion and efficiency of land use, skyscrapers go on increasing in number. However, skyscrapers which were newly built in Korea have many problems such as consumption of enormous amounts of energy, destruction of natural environment, and traffic jam. And from now on, environment-friendly development of skyscraper is urgently needed. Therefore, in this study, we tried to find the planning elements and estimation indexes to improve the environment-friendly quality of high-rise residential architecture by investigating environment-friendly skyscraper certification in Korea and the other countries. For that reason, we investigated the application ratios of 10 cases in Korea. And the results showed that the application ratios of environment-friendly estimation indexes were lower than 50% and the environment-friendly quality of skyscrapers in Korea was generally low. Therefore, based on these planning elements and estimation indexes, we tried to establish the guideline of improvement direction for environment-friendly development of high-rise residential architecture in Korea.

• 한국실내디자인학회논문집
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• 제15권6호
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• pp.150-158
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• 2006

The purpose of this study is to evaluate environment-friendly planning feature in Environment-friendly Certificated apartments and to use the basic planning data of housing. Seven Environment-friendly Certificated apartments have been analyzed. The findings of this study are as follows: Environment-friendly planning features are categorized into 4 items; floor planning feature, material planning feature, universal planning feature and environmental planning feature. Among floor planning features, natural sunlight, built-in closets, and differentiated floor plans are well considered, but the flexible floor plan for resident's lifestyle and green space are lack. Among material planning features, environment-friendly finishing materials, environment-friendly products and energy-efficient double-pane windows are well considered, but implementation for resource savings using recycled materials are lack. Among universal design planning features, removal of threshold and installation of safety device in bathroom are not well considered. Among environmental planning features, usage of alternative energy like solar energy are not applied. The environment-friendly planning features in interior space should be introduced in diverse ways.

• 디자인학연구
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• 제25권5호
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• pp.113-119
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• 2012

Under the paradigm of 'Eco', the core of sustainability management, this study aims to establish both domestic and international markets and secure competitiveness in the global markets through the development of children's furniture composed of recycled and unharmful materials. Currently, in Europe and in the Western regions, the concepts of 'eco-friendly', 'children', and 'DIY' are well-placed in the daily lives of the people. On the other hand, compared to the domestic demand for eco-friendly children's furniture, the essential approach and the qualitative improvements about the subject are being slowly progressed. Particularly, the process of applying eco-friendly materials and finishing materials to the children's furnitures are mostly in a non-existent state. Thus, in this study, simple application of basic eco-friendly materials such as natural woods or imitation of overseas furniture designs were avoided to create transformable eco-friendly one-touch DIY children's furniture for children's growth and development through the application of eco-friendly processes of technology, design, and other stages of the development process. In other words, under the big category of eco-friendly children's furniture, the furniture was developed through an environmentally-friendly process of universal design that is suitable for children of all ages, and thus, ultimately maximizing the economical effective value and reducing consumption of resources and environmental pollutions.

• 한국주거학회논문집
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• 제13권5호
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• pp.21-30
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• 2002

Considering the present development situation of domestic apartment complexes, the development of environment-friendly apartment complexes is very important issue in Korea. At this point of time, it is very meaningful to understand the domestic development trend and the actual condition of environment-friendly apartment complexes and examine various problems about this and the possibilities fer development. Thus the purpose of this study is to accumulate basic data to establish planning direction and pertinent planning factors or the environment-friendly apartment complex for sustainable development. It is believed that the role of the related aspects such as administration, construction companies, designers and residents must be redefined in order to manage such problem. Planning factors for environment-friendly apartment complex should be developed systematically and more fit to the natural environment and residents in the aspect of district and community.

• KIEAE Journal
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• 제3권1호
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• pp.37-44
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• 2003

The purpose of this study is to analyse the attitude of Environmental Friendly Factors for proper environmental friendly model that is adapted to whole life-space. For this study, 25 factors were used from published thesis, reports, and news items. etc.. The results of this study are that our environmental problem is more serious than the world. The respondents prefer natural environmental friendly factors to artificial. Further study of environmental friendly planing will make rapid progress not only housing estates but other building for factory, entertainment establishment, and office building.

• 한국농촌건축학회논문집
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• 제12권1호
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• pp.57-64
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• 2010

This study is to clarify the actual conditions of high school of environment friendly architecture per ecological environment elements through extracting ecological environment elements which is possible to analyze in quantity certification standards of environment friendly architecture. As the method of the study, First, certification as an examination on certification system of environment-friendly architecture, summary of certification system of environment friendly architecture and certification high school, ecological environment elements which is possible for quantitative analysis of ecological environment certification standards were extracted. Second, actual condition of ecological environment elements per non-certification high school by collecting actual data of certification schools environment friendly architecture were analyzed and the results are as the follows. The average of ecological area ratio was 17.8 percent in case of non-certification school facilities it was analyzed that the natural based green area ratio was 17.5 percent, continuous green axis length ratio was 19.0 percent and roof green garden area ratio was 0 percent.

• 한국보육학회지
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• 제18권3호
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• pp.141-157
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• 2018

본 연구는 지속가능발전 내용이 포함된 그림책을 활용한 토의활동이 유아의 자연환경 감수성과 환경친화적 태도에 미치는 영향을 살펴보는데 있다. 연구대상은 전라북도 G시에 소재한 H유치원에 재원 중인 만 5세의 유아 39명(실험집단 19명, 비교집단 18명)으로 선정하였다. 실험집단 유아를 대상으로 지속가능발전의 내용이 포함된 그림책을 활용한 토의활동을 12주 동안 실시하였고, 비교집단에는 누리과정 지도서에 제시된 지속가능발전 관련 활동을 실시하였다. 결과분석을 위하여 독립표본 t-test와 공변량 분석(ANCOVA: Analysis of Convariance)을 실시하였으며, 통계적 분석은 SPSS WIN 18.0 프로그램을 이용하였다. 연구결과 첫째, 지속가능발전 내용이 포함된 그림책을 활용한 토의활동이 유아의 자연환경 감수성에 긍정적인 영향을 미치는 것으로 나타났다. 둘째, 지속가능발전 내용이 포함된 그림책을 활용한 토의활동이 유아의 환경친화적 태도에 긍정적인 영향을 미치는 것으로 나타났다. 이러한 결과는 지속가능발전 내용이 포함된 그림책을 활용한 토의활동이 유아의 자연환경 감수성과 환경친화적 태도 증진을 위한 효과적인 대안이 될 수 있음을 시사해준다.

• 한국환경교육학회지:환경교육
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• 제20권4호
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• pp.132-144
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• 2007

This study had the following aims: (1) To examine the significance of an eco-friendly environment based on the experiences of adventure sports participants, and to identify eco-friendly behaviors; (2) To review the characteristics of adventure sports that are held in a natural environment, as well as the existing problems in different adventure sports fields (3) To conduct an analysis of various eco-friendly behaviors and of the efforts that are being exerted to address a wide range of problems related to environmental pollution, by employing qualitative research methods, in a bid to ultimately present the symbiotic, coexistent, and harmonious relations between nature, sports, and humans. Ten individuals who were engaging in the adventure sports of scuba diving and paragliding were selected for the study, and the gathered data were analyzed based on the "surjection", "unit", "sign", and "subject" factors. The results of the analysis show that most of the adventure sports participants who were the subjects of the study believe that an eco-friendly environment helps protect and preserve nature, which is the basis of human life that adventure sports flourish in a natural environment that nature sustains adventure sports and that dealing carelessly with nature, or concentrating on the exploitation of nature for development purposes a real danger to its preservation. It was established in the study that keen adventure sports participants, or those who have a passion for and a thriving career in adventure sports, can do much to address environmental problems. The results of the study demonstrate that the link between sports and nature will promote a keen interest in and love for nature among sports enthusiasts as well as an awareness of the need to protect and preserve it, which will in turn lead them to develop a desire to do such. When these are realized, concrete images of eco-friendly behaviors will be seen on the part of a greater number of people.

• 한국의류산업학회지
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• 제19권4호
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• pp.515-522
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• 2017

The natural dyeing industry has been faced with increasing demands of constant needs for environmentally and body friendly clothing products among modern consumers. Natural dyeing has attracted attention as a next-generation technology in green textiles. Dyestuffs need to be diversified for technological development activation in order to meet the increasing demands for natural dyeing. This study extracted dyeing solutions from the leaves of the Rose of Sharon (the national flower of South Korea) and investigated its dyeing properties for the development of various natural dyestuffs. This study investigates the dyeability of silk fabrics with Rose of Sharon leaves extract. Optimal conditions for dyeing of silk fabrics with the extract of Rose of Sharon were $40^{\circ}C/80min$ and $90^{\circ}C/60min$ with 100% concentration. Looking at the results, it showed the best K/S value at pH3, Sn pre-mordanting and Fe post-mordanting. Color fastness to washing, dry cleaning, rubbing and perspiration was good at grade 4-5 or 4. However, light fastness was observed in grade 2. In aspect of functional property, it showed an excellent result of 90% deodorization rate. In addition, its proven functionalities (deodorant properties) will help to produce high value added environment-friendly products. Those findings demonstrate the possibilities of the Rose of Sharon as an environment-friendly dye.