• 제목/요약/키워드: environmental factors.

검색결과 12,237건 처리시간 0.044초

Optimization of Wheat Harvest

  • Kim, S.H.;Kolaric, W.J.
    • Agricultural and Biosystems Engineering
    • /
    • 제1권1호
    • /
    • pp.7-15
    • /
    • 2000
  • Optimization was considered from three perspectives : minimum grain loss, minimum damaged grain loss, and minimum power consumption. Factors affecting combine performance were classified as control, adjustable, and environmental. Control and adjustable factors were optimized by the parameter design developed by Taguchi. Environmental factors were used as input for optimization. Optimum range for control and adjustable factors are presented. Parameter design was adequate to obtain the optimum levels of control factors and optimum range of adjustable factors.

  • PDF

OPTIMIZATION OF WHEAT HARVEST

  • Kim, Sang-hun-;William-J.Kolaric;Kang, Whoa-Seug
    • 한국농업기계학회:학술대회논문집
    • /
    • 한국농업기계학회 1993년도 Proceedings of International Conference for Agricultural Machinery and Process Engineering
    • /
    • pp.714-726
    • /
    • 1993
  • Optimization was considered from three perspectives ; minimum grain loss, minimum damaged grain loss, and minimum power consumption. Factors affecting combine performance were classified as control , adjustable , and environmental. Control and adjustable factors were optimized by the parameter design developed by Tajuchi. Environmental factors were used as input for optimization Optimum range for control and adjustable factors are presented. Parameter design was adequate to obtain the optimum levels of control factors and optimum range of adjustable factors.

  • PDF

의류 브랜드의 지속가능성 실천을 위한 프레임워크 개발에 관한 연구 (A Study on a Framework to Achieve the Sustainability of Apparel Brands)

  • 신혜영
    • 복식
    • /
    • 제60권9호
    • /
    • pp.136-149
    • /
    • 2010
  • One of the most important objectives that apparel company will pursue in 21 century is to achieve the critical factors of the sustainability. The concept of sustainability is to meet the demands for the valuable life of contemporary generation and to satisfy the desires for preservation of the species and the productive life of future generation by protecting the earth environment from the waste and pollution and by developing and maintaining harmoniously main economical, social, environmental and cultural factors. The practice of sustainability was focused only on the environmental factors in past. Now, the effective and efficient practice of sustainability should be fulfilled and executed in social factors of the responsibility company has, in economical factors and in the cultural factors that is the critical in fashion industry. The purpose of the study is to develop the practical framework consisting of four sustainable factors which apparel brand should refer and apply to the practice of sustainability. By executing the practical factors of the frameworks, apparel company can take a lot of advantages. By practicing the environmental factors, company can get Eco-efficiency. Apparel company can take the social responsibility by performing social sustainable factors, can make economical quality growth by fulfilling economical sustainable factors, and can understand cultural diversity by executing cultural sustainable factors. As one of the most important preparation in 21 century industry, the apparel brand should have an interest in and require the practical management of sustainability, objective setting and practice of brand unit, reflection on the sustainability in brand planning.

초등학교 환경교육 운영에 대한 연구 -초등학교 실행 사례를 중심으로- (A Study on the Management of Environmental Education in Elementary School -A Case Study of Elementary Schools-)

  • 김용근
    • 한국환경교육학회지:환경교육
    • /
    • 제15권2호
    • /
    • pp.86-99
    • /
    • 2002
  • The purpose of this study is to make clear the management of Environmental Education in Elementary school in Korea. To accomplish this purpose, The research for the actual condition of management of Environmental Education according to school, grade, and class was progressed. The researcher was analyzed Hindrance Factors of Sound Environmental Education in School and presented some suggestion on the basis of above-mentioned findings. On one side, the method of research is a case study on qualitative based way. A case study was conducted with it's focus on public elementary school in Seoul. As for major research methods, observation by participating in school field and in-depth interview were respectively employed; subsidiary methods included literature study. The findings of this study are as belows: First, Environmental Education was not managed practically with specific way in school. Second, Environmental Education by direct and actual outdoor experience was unusual. Third, most of class school work about Environmental Education was focused on not only the type of prescription after the environmental problem but also, the treatment of articles in newspaper and TV. Forth, educational compulsion such as “you have to do that.” was mainly used as Environmental guidance for sound attitude in school without clear reasons. In the last analysis, hindrance factors of sound management for environmental education in elementary schools were ‘passive adjustment’, ‘discriminative reception’, ‘absence of information resource’. these factors came from atmosphere of negligence environmental education in schools. Therefore, all of teachers have to affirmative belief and attitude as personal dimension and all of elementary schools improve environmental education system.

  • PDF

환경소양 요인별 수준에 따른 환경행동 실천 경험의 차이 (Differences in Environmental Behavior Practice Experience according to the Level of Environmental Literacy Factors)

  • 김윤경;강지훈;이동영
    • 대한지구과학교육학회지
    • /
    • 제16권1호
    • /
    • pp.153-165
    • /
    • 2023
  • 본 연구는 학습자들의 환경 소양을 조사하여 환경 소양의 요인별로 그 결과를 분류한 후, 요인별 분류에 따른 학생들의 환경행동 실천 경험에 대해 어떤 차이가 있는지를 알아보기 위한 연구이다. 연구의 실행은 P 광역시에 위치한 D 초등학교 6학년 학생 47명의 학생들을 최종 분석의 대상으로 진행되었으며, 환경소양 검사지와 환경행동 실천 경험에 관한 설문지를 주요 데이터로 사용하였다. 연구의 결과 학습자들은 환경소양 요인에 따라 세 군집으로 분류되었으며, 각각 고 환경소양군, 저 환경소양군, 저기능정서군으로 명명하였다. 각 군집별로 환경행동 실천 경험에 대한 기술 내용을 활용하여 언어 네트워크를 형성하고, 중심도 분석을 실시하여 시각화한 후 분석하였다. 분석한 결과 고환경소양군은 1) 환경행동 실천 주체를 개인과 가족으로 인식하고, 2) 환경행동 실천 경험을 환경소양의 모든 요소와 연관지어서 기술하였으며, 3) 기후변화에 대해 비교적 비관론적 관점으로 인식하는 것을 확인하였다. 저 환경소양군과 저기능정서군은 1)환경행동 실천 주체를 비교적 사회적 문제로 인식하고, 2) 환경행동 실천 경험에 대한 기술이 비교적 편향되어 있으며, 특히 저기능정서군은 지식 요소에 집중되어 있다. 그리고 3) 기후변화에 대해서는 비교적 낙관론적인 관점으로 인식하고 있는 것을 확인하였다. 이 같은 결론을 바탕으로 환경교육의 관점에서 시사점을 주는 제언을 하였다.

환경정보 체계화에 관한 연구(II) (Studies on Environmental Information System(II))

  • 김명진;최덕일;장준기;이재운
    • 환경영향평가
    • /
    • 제2권1호
    • /
    • pp.21-29
    • /
    • 1993
  • We live in an age of information and an era of rising environmental awareness. As a result, efficient and judicious use of environmental information has become a prerequisite to planning and management of environmental affairs in contemporary societies. So, we have embarked on a study of Environmental Information System(EIS). In the first article, we discussed the status analysis of EIS in Korea, USA, and Japan. This study as the second project has three major components. First, it classifies items and sources of 22 EIA factors. Second, it explains building of environmental information comprising geographic and attribute data of 17 factors. Finally, the study presents applications of EIS as an alternative assessment of suitability analysis. Based on these analysis, the study makes some recommendations and conclusions.

  • PDF

여대생 흡연과 환경적 요인 및 자기효능감에 대한 연구 (A Study of Environmental Factors and Self-efficacy in Female College Student Smokers)

  • 김경선;이지원
    • 기본간호학회지
    • /
    • 제6권2호
    • /
    • pp.185-197
    • /
    • 1999
  • For the past 10 years, the number of male smokers has dwindled. On the other hand, the number of female smokers has increased abruptly. Cigarette smoking is more hazardous to a woman than to a man because it can affect her health and her fetus during pregnancy. Many studies show that cigarette smoking is one of the most important risk factors determining the mortality and the morbidity of various kinds of diseases such as lung cancer and pharyngeal cancer. But, it is also known to be one of the risk factors we can handle and prevent easily. The subjects of this study consisted of 263 female nursing students in Seoul and Chonbuk Province. Using questionnaires, we were collected data from December 1 to December 10 1998. The questionnaire included 24 questions related to environmental factors and 14 questions related with self-efficacy. The statistical analysis was done with SPSS ver. 8.0(SPSS Inc. U.S.). The results of this study are as follows. 1) Cigarette smoking in women was influenced by her family or friends. That is to say, the higher number of her friends or family members who smoked cigarettes, the more likely a woman was to become a smoker. Economic status and knowledge level about the risks of cigarette smoking were also related to women smoking. So, women with lower levels of economic status and less knowledge about the risks of cigarette smoking were the more likely to become smokers. 2) Woman with higher levels of self-efficacy were less likely to become smokers. 3) The factors influencing a woman's smoking were whether her friends smoked, whether her mother smoked and her self-efficacy in that order. Environmental factors, self-efficacy were found to be important factors influencing smoking in women. It is suggested a quit-smoking program for women college students, be based on consideration of these environmental factors and self-efficacy.

  • PDF

Research on the Structure and Application of Fuzzy Environmental Impact Assessment Model

  • Tien, Shiaw-Wen;Hsneh, Chia-Hsiang;Chung, Yi-Chan;Tsai, Chih-Hung;Yu, Yih-Huei
    • International Journal of Quality Innovation
    • /
    • 제5권2호
    • /
    • pp.45-62
    • /
    • 2004
  • Any business activities may have impact on environment to a certain extent. Enterprises must find appropriate approaches to measure the impact on these environmental aspects, which can be used as the basis to direct enterprises' efforts to improve the environmental impact. The method used to evaluate significant factors in life cycle assessment standards is the one most commonly used by enterprises in general to measure environmental impact. By this method, the decisive factors of each environmental aspect are given scores according to the preset scoring standard of the organization. The scores are added up for each aspect and ranked to assess major environmental aspects. The drawback of this assessment method, that is, it ignores the degree to which each of these factors affects the environment, results in poor credibility. Therefore, this study attempts to solve some qualitative problems by applying to fuzzy theory, in particular, by identifying appropriate fuzzy numbers through fuzzy sets and membership function. Moreover, the study seeks to obtain a crisp value in the process of defuzzifization in order to make up for the shortfall of the original method in dealing with relative weight of decisive factors and thus increase its applicability and credibility. The department of light production of an electronics company is used as an example in this study to measure environmental aspects by employing both the traditional significant factor method and the fuzzy environmental impact assessment model proposed in this study. Based on verification and comparison of results, the model proposed in this study is more feasible as it reduces partiality in decision-making by taking the relative weights of decisive factors into consideration.

고형연료의 배출특성 연구 (A Study on the Characteristics of Solid-Fuel Combustion)

  • 장기원;허선화;임승영;김대곤;정용원;강대일
    • 한국대기환경학회지
    • /
    • 제33권4호
    • /
    • pp.351-360
    • /
    • 2017
  • In this study, we developed emission factors from solid-fuel fired combustors. In order to increase the reliability of emission factors, we conducted a joint research with the Institute of Health and Environment. As a result, PM average concentration was $8.19mg/m^3$. $SO_2$ and $NO_x$ were respectively 8.46 ppm, 50.64 ppm. Hazardous air pollutants such as Cr, Pb and Hg were detected in trace amounts continuously for 2 years in some solid-fuel fired combustors. The emission factors for the three kinds of PM, $SO_x$, $NO_x$ were developed based on the measurement data. For the PM emission factors, that of SRF was 15.93 g/kg and that of Bio-SRF was 14.18 g/kg. Compared with those of US. EPA, emission factors of this study showed the results of low values. $SO_x$ emission factors were 4.42 g/kg for SRF and 1.39 g/kg for Bio-SRF. $NO_x$ emission factors were 13.21 g/kg and 4.43 g/kg, respectively. Through the results of this study, we would support atmospheric administration policies such as the emission factor notification revision.

Individual and Environmental Factors Influencing Questionable Development among Low-income Children: Differential Impact during Infancy versus Early Childhood

  • Lee, Gyungjoo;McCreary, Linda;Kim, Mi Ja;Park, Chang Gi;Yang, Soo
    • 대한간호학회지
    • /
    • 제42권7호
    • /
    • pp.1039-1049
    • /
    • 2012
  • Purpose: From the holistic environmental perspective, individual and environmental influences on low-income children's questionable development were identified and examined as to differences in the influences according to the child's developmental stage of infancy (age 0-35 months) or early childhood (age 36-71 months). Methods: This study was a cross-sectional comparative design using negative binominal regression analysis to identify predictors of questionable development separately for each developmental stage. The sample was comprised of 952 children (357 in infancy and 495 in early childhood) from low-income families in South Korea. Predictors included individual factors: child's age and gender; proximal environmental influences: family factors (family health conditions, primary caregiver, child-caregiver relationship, depression in primary caregiver) and institution factors (daycare enrollment, days per week in daycare); and distal environmental influences: income/resources factors (family income, personal resources and social resources); and community factors (perceived child-rearing environment). The outcome variable was questionable development. Results: Significant contributors to questionable development in the infancy group were age, family health conditions, and personal resources; in the early childhood group, significant contributors were gender, family health conditions, grandparent as a primary caregiver, child-caregiver relationships, daycare enrollment, and personal resources. Conclusion: Factors influencing children's questionable development may vary by developmental stage. It is important to consider differences in individual and environmental influences when developing targeted interventions to ensure that children attain their optimal developmental goals at each developmental stage. Understanding this may lead nursing professionals to design more effective preventive interventions for low-income children.