• 기계와재료
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• v.22 no.3
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• pp.96-109
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• 2010

자동차는 다양한 형상과 기능을 가진 부품소재의 집합체라 할 수 있다. 자동차의 고출력화에 의한 연비향상과 각국의 환경규제 강화 요건을 충족시키기 위해 자동차 엔진의 작동온도와 이에 따른 배기가스의 온도가 꾸준히 높아지는 추세이다. 따라서 고온재료의 선택과 사용이 보다 중요해 지고 있다. 자동차에 사용되는 고온 부품은 설계사양에 맞추어 그리고 경제적인 측면을 고려하여 내열재료를 사용하는 방법과 표면처리를 하는 두 가지 방법이 주로 채택되고 있다. 내열재료를 사용하는 대표적인 부품은 엔진을 구성하는 부품과 연소실로부터 나오는 고온 고압의 배기가스가 이동하는 배기계 부품이다. 엔진을 구성하는 부품 중에는 냉각수에 의해 온도가 제어되는 부분은 경제적인 소재가 사용되나 밸브와 같은 부품은 고온재료가 채용된다. 가장 높은 온도에서 사용되는 배기계 부품에는 경제성이 감안되면서도 높은 열적, 기계적 안정성이 동시에 요구되고 있다. 전통적으로 배기부품에는 구상흑연주철이 널리 사용되어 왔고 현재에도 원가 측면의 강점을 이용해 대부분의 차량에 적용되고 있으나 일부 고출력, 고배기량 엔진의 경우에는 주철의 한계온도 이상의 배기온도가 요구되어 스테인리스 강을 도입하고 있다. 또한 내열 타이타늄 합금, 금속간화합물과 같은 고온재료가 개발됨에 따라 고가의 차종에는 신재료가 이들 부품으로 채용되고 있다. 이 글에서는 배기계 부품의 설계적인 요소에 의한 열적, 기계적 측면의 내구 특성을 살펴보고, 이들 부품에 보편적으로 적용되는 고온 금속재료의 종류 및 기계적 특성을 소개하였다. 아울러 미래의 환경친화적 자동차용 고온 부품을 개발하기 위하여 연구되고 있는 Super Si+MO, 스테인리스 강, TiAl, 고온 타이타늄 합금 등과 같은 자동차 내열 부품으로 사용되는 신소재의 연구개발 동향에 관하여 기술하였다.

• Asia Marketing Journal
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• v.2 no.2
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• pp.86-113
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• 2000

본 연구는 환경지향제품구매와 재활용행동을 설명하기 위한 것으로 Schwartz 가 제기한 규범이론에 관한 이론고찰과 실증분석을 병행하고 있다. 규범이론의 핵심은 사회규범을 개인의 행동으로 전환시키는 과정을 설명하는 것이다. 규범이론에 따르면 환경지향제품구매와 재활용과 같은 이타적 행동은 사람들이 일종의 추상적이고 객관적인 방식으로 동의하는 도덕적 행동에 관한 사회규범으로 시작된다. 그러나 사회규범은 행동을 지배하기에는 너무 일반적이고 소원하다. 따라서 이러한 사회규범은 개인적 차원에서 우리들 각 개인에게 적응되어 개인규범이 된다. 사회규범은 사회적 구조의 차원에서 존재하는 반면 개인규범은 강력하게 내면화 된 도덕적 태도가 된다. 개인이 규범을 내면화 했지만 이에 따라 행동하지 않을 수도 있는 데 상황에 적절하도록 개인규범이 정의되어야 한다. 규범이론은 주어진 상황에 적절하도록 사회규범을 개인규범으로 정의하도록 유도하기 위해서는 바로 행동결과지각과 책임귀인지각이 개입되어야 한다고 제기하고 있다. 본 연구는 이상의 규범이론에 근거하여 소비자의 환경지향제품구매행동과 재활용행동을 설명하고자 다음 세 가지 연구목적을 설정하였다. 첫째, 사회규범이 개인규범의 형성에 어떠한 영향을 미치는가? 둘째, 사회규범이 내면화 된 개인규범은 환경지향제품구매행동과 재활용행동에 직접적인 영향을 미치는가? 셋째, 규범이론은 조절변수가 개입되는 경우 개인규범이 행동으로 전환되는 것이 더욱 용이해진다고 제기한 바, 조절변수의 하나인 환경지향행동결과의 중요성지각의 영향을 검증하고자 한다. 연구결과, 환경문제가 개입된 상황에서 사회규범은 개인규범의 형성에 강한 영향을 미치며 개인규범은 다시 환경지향제품구매와 재활용행동에 영향을 미치는 것으로 나타났다. 그리고 환경지향행동결과의 중요성지각 역시 개인규범이 환경지향제품구매행동으로 전환되는 과정에서 조절적 역할을 함으로서 양변수간 관계를 더욱 강화하는 변수임을 연구결과는 제시하고 있다. 그러나 개인규범-재활용행동사이에서의 조절적 역할은 없는 것으로 나타났다.

• Journal of Environmental Science International
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• v.25 no.12
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• pp.1643-1651
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• 2016

It is important to understand consumer attitudes associated with their eco-friendly behavior on account of not only environmental reasons, but also corporate aspects. In this study, we examine the relations between variables influencing eco-friendly attitudes and eco-friendly behavioral intentions, namely, recycling, reusing, and reducing (3R). We first, performed a theoretical consideration through reviews of literature on ethical identity, ethical obligation, altruism, and eco-friendly attitudes, and behavioral intentions. Based on the literature review, we designed a study model and drew hypotheses. Further, we collected data using a survey and processed them statistically in order to verify the hypotheses. A total of 265 samples were collected and the data were analyzed using a structural equation model (-LISREL 8.70). The results suggest that ethical identity and altruism significantly influence environmental attitudes. However, the effects of ethical obligations on eco-friendly attitudes are insignificant. The environmental attitudes have a significant effects on the consumer behavioral intention for recycling, reusing, and reducing. Although this study has some limitations, it is expected that it will positively trigger follow-up research.

• Hwankyungkyoyuk
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• v.24 no.2
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• pp.70-85
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• 2011

The purpose of this study was to investigate the influence of the energy campaign environmental education of 3rd graders in elementary school in Seoul. The students were divided into an experiment group and a control group. A reconstructed questionnaire through Kim(2005) and Lee(2005)'s test tool was used to survey the effects of applying the energy campaign environmental education program. The i-STATistics program was used to analyze the results. The major results of this study are as follows. First, the researcher was able to develop and apply teaching-learning model for energy campaign environmental education by extracting and recreating the energy education-related contents from the lower grades(1, 2, 3 grade) in 2007 elementary school curriculum. Second, this program had a positive effect on pro-environmental altitudes of elementary school students. Third, this program had a positive correlation among the 3 subdomains of cognitive, affective and behavioral. Fourth, according to qualitative analysis, the students appear to be more concerned in the overall environmental problems containing energy problem and showed a higher will to act while participating in the environmental education through energy campaign program. In conclusion, this program is more directly effective than lectures on energy following the curriculum to improve student's pro-environmental altitudes. Therefore, more intensive research on teaching and learning activities should be highly considered.

• Hwankyungkyoyuk
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• v.20 no.4
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• pp.166-179
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• 2007

The purpose of this study is to find a concrete plan by examining effect of environmental education program on Environment-friendly Attitudes in sixth grade elementary school and to testify the educational values of environmental education program. The study was carried out by 32 students, which was experimental group and by 32 students, control group, in the sixth grade of Y elementary school located in yangjung, Busan city. Both group was found out the same quality group through the pre-test. Environmental class using environmental education program was applied to experimental group and traditional lecture class was applied to control group. After executing post-test to each group, comparative analysis was conducted by t-test using a SPSS 12.0 program. The result of post-test showed that experimental group taken environmental class using environmental education program was more statistically meaningful than control group taken traditional lecture class in the cognitive, emotional, behavioral area. As a result, in sixth grade elementary school environmental class using a environmental education program was more effective in knowledge-acquirement about the overall environ mental programs, and in fostering Environment-friendly Attitudes and behaviors than traditional lecture class. The teacher must develop efficient environment education program in such side.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.18 no.12
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• pp.264-275
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• 2017

Objective: This study examines the effects of children's art activities through forest experience in relation with Nuri curriculum on environmental sensitivity. Method: A survey was administered to an experimental group of 20 children as well as a control group of 20 children for statistical analysis. after 16-class art activities through forest experience were performed to children aged 4 at a daycare center for 50 days. Result: Children's art activities through forest experience in relation with Nuri curriculum had a positive effect on their environmental sensitivity. In particular, their art activities had a positive effect on their self-awareness, self-regulation, empathy and motivation in the experimental group, supporting the educational effects and benefits of developmental children's art activities through forest experience in relation with Nuri curriculum. In other words, art activities through forest experience are useful in terms of providing children with creative expression activities in art by leading to observation and exploration, as well as educational experiences that have positive attitudes toward the environment. Conclusion: As children's art activities through forest experience have a positive effect on their environmental sensitivity, more useful information on teaching-learning methods will be able to be provided to early childhood teachers in the field. Consequently, children's art activities through forest experience need to be actively introduced in the field of early childhood education as an alternative for learning nature and improving environment-friendly emotional intelligence.

• Journal of Environmental Science International
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• v.21 no.3
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• pp.351-362
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• 2012

The purpose of this study is to make a Result analysis on the free inquiry Method of elementary school student. also, this study investigates how free inquiry activities effect the science Process skills and environment-friendly attitudes of elementary school student For this study 150, sixth year, elementary school students from Busan city were selected. The inquiry examined the effectiveness of each of the following free inquiry methods: the PBL inquiry, the Project inquiry, the IIM inquiry, the small group inquiry and the science notebooks inquiry. The students were divided into groups in which they incorporated the respective methods into their practice. Test showed the following results: The environmental class which applies a free inquiry method(PBL inquiry, Project inquiry, IIM inquiry, small group inquiry and science notebooks) was effective in science process skills improvement. Second, The environmental class which applies a free inquiry method((PBL inquiry, Project inquiry, IIM inquiry, small group inquiry and science notebooks) was effective in environment-friendly attitude improvement.

• Journal of the Korean Home Economics Association
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• v.37 no.1
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• pp.29-44
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• 1999

The objectives of this study are (1) to identify sub-areas of the pro-environmental behavior, (2) to examine the level of the pro-environmental attitude and behavior, (3) to examine the degree of inconsistency between attitude and behavior, and (4) to investigate the reasons of the inconsistency. Data was collected from the questionnares with 299 married men and 378 married women and the deep interviews with 10 married women. The major findings are follows : (1) The pro-environmental behavior can be classified into 2 sub-areas : social-oriented area and individual-oriented area. (2) The level of pro-environmental attitude and behavior in the social-oriented area is lower than those in individual-oriented area. (3) The attitude-behavior inconsistency in the social-oriented sub-area is stronger than that in the individual-oriented sub-area. (4) The reasons of the pro-environmental attitude-behavior inconsistency are the lack of the sincere environmental consciousness and the existence of the pro-environmental behavior restriction factors.

• Journal of Environmental Science International
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• v.16 no.9
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• pp.1103-1109
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• 2007

The aim of this study was to isolate mesophilic chicken feather-degrading bacteria and to evaluate feather hydrolysate as alternative biofertilizer. Isolate RS7 was isolated from compost and identified as Bacillus pumilus according to API analysis and l6S rDNA sequencing analysis. Chicken feathers were completely degraded after 5 days of cultivation at $30^{\circ}C$. Feather hydrolysate treated by B. pumilius RS7 positively influenced Helianthus sannuus L. (sunflower) growth (e.g. growth rate, number and dry weight of leave, and flowering rate). These results suggest that feather hydrolysate prepared using B. pumilius RS7 could successfully be used as alternative biofertilizer, thereby reducing the environmental impact of feather waste from the poultry industry.

• Journal of Environmental Science International
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• v.11 no.1
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• pp.33-40
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• 2002

An antimicrobial substance-producing microorganism was isolated from soil samples. Based of the taxonomic characteristics of its morphological, cultural, physiological properties and 16s rRNA sequence alignment, this microorganism was identified as Pseudomonas aeruginosa, and we named Pseudomonas aeruginosa EL-KM. The optimal culture condition for production of antimicrobial substance was 1% mannitol, 0.4% yeast extract, 0.5% Nacl, 0.2% $K_2SO_4$, 100$\mu$M $MgSO_4$.$7H_2O$, 10$\mu$M $CaCl_2$.$2H_2O$, 1$\mu$M $FeSO_4$.$7H_2O$, 1$\mu$M $MnSO_4$.$4-5H_2O$, initial pH 7 and 200 rpm at 3$0^{\circ}C$. The purification of the antimicrbial substance was performed by silica gel column chromatographys, and fraction with TLC $R_f$ 0.77 value represented good antimicrobial activity. The crude antimicrbial substance was stable within a pH range of 3-10 and temperature range of 4$^{\circ}C$-121$^{\circ}C$ autoclaving. This crude antibacterial substance acted as bacteriolytic agent against Vibrio cholerae non-Ol ATCC 25872, and also exhibited excellent properties, when the substance was demonstrated against many other gram-positive, gram-negative bacteria, yeast and fungi.