• 한국환경농학회지
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• 제27권1호
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• pp.10-17
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• 2008

The objective of this study was to estimate the pollutant loads from paddy fields by cultivation practices using a non-point-sources models. One of them is CREAMS-PADDY model that was developed considering the water balance and mass balance of paddy fields. The CREAMS-PADDY model was applied to provide basic data to reduce runoff loadings under various scenarios such as various water management control and various fertilizer condition. The model was verified against T-N, T-P and runoff flow data collected during cropping periods at 2000. The model results agreed well with the measured data in verification. The results showed that the model could be used for estimating the runoff loadings from irrigated paddy fields by cultivation practices was possible. Comparison of simulated the standard height and the sluice management of T-N and T-P runoff loadings from paddy fields were +32.4%, +10.3% in 10 mm below the standard height, -29.2%, -35.9% in 20 mm above the standard height, 52.6%, 59.0% in 40 mm above the standard height, respectively. Comparison of simulated the standard fertilizer and the fertilizer control of T-N and T-P runoff loadings from paddy fields were -1.3%, -21.7%in reduction of conventional fertilizer 30%, -1.0%, -12.5% in reduction of standard fertilizer 30%, respectively. Therefore, reducing nonpoint-sources nutrient loading by reducing fertilization may not work well in the range of normal paddy rice farming practices, and instead it could be achieved by reducing surface drainage outflow.

• 통상정보연구
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• 제12권4호
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• pp.257-277
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• 2010

This paper examined the supply chain management Integration factors and evironmental performance in Korean industry. As SCM got evolved, the importance of Socially and Environmentally Responsible Supply Chain among the Supply Chain members are increased. we should consider the following critical factors such as SCM Integration, environmental practice, SCM performance and environmental performance. The purpose of this study is to focus on linkage between conventional SCM factors with new environmental factors to clarify the critical factor for the SCM firms who may concerns about environmental performance. Based on the analysis of sixty-two cases, the following results were found. First, SCM Integration factors of supply chain management have a positively significant influence on SCM performance and environmental performance of supply chain management. Second, SCM performance have a positively significant influent on environmental performance. Third, environmental practice factors of supply chain management have a positively significant influence on SCM performance but not significant influence on environmental performance. This study suggests that with high level of Integration and environmental practice, firms may have good result on SCM performance and environmental performance. Especially, our empirical evidence shows that environmental practices without good SCM performance, may not have good result on environmental performance.

• Industrial Engineering and Management Systems
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• 제11권2호
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• pp.165-169
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• 2012

There has been a growing interest in firms' environmental sustainability activities to improve environmental practices in their supply chain. This study aims to deal with supplier evaluation of firm's green supply chain management (GSCM) criteria with incomplete information. Nevertheless, the suitable supplier is a key strategic direction in eliminating environmental impact on supply chain management for manufacturing firms. The firm's GSCM criteria and supplier selection need to be unified as a system to improve the firm's performance.

• 환경영향평가
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• 제4권2호
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• pp.105-121
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• 1995

지하수의 질산오염 문제는 한국을 포함한 세계의 여러나라에서 보고되어 왔다. 질산염은 청색증 유발물질로서 뿐만 아니라 발암물질일 가능성도 동물실험을 통해 제기되고 있다. 대부분의 경우에 지하수 질산염의 주요 오염원은 농작물 생산량의 향상을 위해 사용하는 비료이다. 그밖에 가축의 분뇨, 산업폐기물 및 생활하수도 지역에 띠라 질산염 오염원이 될 시기는 언제인가를 결정하기 위하여 의사결정권자는 여러가지의 작물경작방법에 따라 지하수 질산오염이 어떻게 변하는지를 시계열로 예측할 필요성이 있다. 그러나 직물경작방법에 따른 지하수 질산오염을 예측하는데 필요한 토질특성, 비료의 사용량, 작물의 종류 같은 자료의 대부분은 불확실성을 내포하고 있다. 이러한 불확실성은 경제성 때문에 자료의 불충분한 조사와 인간지식의 부족으로 인해 발생한다. 본 논문에서는 불확실성을 고려하면서 작물경작방법에 따른 지하수 질산오염의 변화를 예측하는 방법을 실제적인 사례를 통해 보여준다. 그리고 자료의 불확실성을 표현하기 위해 퍼지집합이론(fuzzy set theory)은 본 논문에서 응용되었다.

• 한국환경과학회지
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• 제26권10호
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• pp.1185-1200
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• 2017

Solid waste management is currently a topic of concern, particularly in the protection of humans and the environment from toxic pollutants and hazardous materials. The importance of solid waste management is recognized at international, national, and community levels. Different agendas have been prioritized and assigned to improve quality of life, productivity, and health, and reduce the burden of pollution. Suitable management of solid waste requires appropriate technology that is affordable, socially accepted, and environmentally friendly. The use of a smart management system involving system dynamics can save energy, money, and labor. System dynamics is a computer-based approach that aids in predicting the behavioral patterns of variables, and correlating dependent and independent variables. The inclusion of system dynamics-based models in solid waste management has recently become more common. In this review, we used system dynamics to determine methods to disentangle solid waste management systems and analyzed different studies on solid waste management using system dynamics in different countries in detail. We also discussed the various software packages that are available for system dynamics and their usefulness for waste management. This review may help in understanding current solid waste management practices using system dynamics.

• Journal of Ecology and Environment
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• 제48권2호
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• pp.182-195
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• 2024

Background: Invasive alien plant species (IAP) significantly threaten Nepal's protected areas and local communities. Understanding their distribution, impact, management, and utilization is essential for developing effective management strategies and sustainable utilization practices. The systematic literature review of publications from 2010 to 2023. The search was conducted through the database Nepal Journal online database (NepJOL) and Google Scholar, yielding an initial pool of 4,304 publication. After applying inclusion and exclusion criteria; we meticulously reviewed 43 articles for data extraction. Results: Seventeen IAP are found in protected area, Nepal with the highest prevalence observed in Koshi Tappu Wildlife Reserve, followed by Chitwan and Sukhlaphanta National Park. The most problematic species in terrestrial ecosystems are Mikania micrantha, Lantana camara, and Chromolaena odorata. The grassland ecosystems of wildlife habitats, primarily in the Terai and Siwalik regions, are the most invaded. Various management approaches are employed to mitigate the spread and impact of IAP, including mechanical methods such as uprooting, burning, and cutting. However, these methods are costly, and context-specific interventions are needed. The study also explores the potential use of IAP for economic, ecological, or cultural purposes, such as medicinal properties, energy production potential, and economic viability. Local communities utilize these plants for animal bedding, mulching, green manure, briquette, and charcoal production. Conclusions: Applying silvicultural practices alongside mechanical management is recommended to maintain a healthy terrestrial ecosystem and utilize the removed biomass for valuable products, thereby reducing removal costs and increasing income sources, potentially benefitting both local communities and wildlife in protected areas.

• 한국물환경학회지
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• 제29권4호
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• pp.466-475
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• 2013

Non-point source pollution management is one of the most important issues in Korean water quality/watershed management. In recent years, Low Impact Development (LID) has emerged as an effective approach to control stormwater in an urban area. This study illustrates how to design and evaluate the effect of non-point pollutant management using EPA-SWMM LID module and suggests design parameters for modeling LID facilities. In addition, optimal installation locations of LID can be determined by a simple distributed hydrologic model by using SWMM for a long-term.

• 한국컴퓨터정보학회논문지
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• 제7권4호
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• pp.220-234
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• 2002

This study examined the impact of preventive environmental management practices on sales growth, manufacturing and environmental performance of the US chemical manufacturing companies. In order to investigate the impact, this study examined the relationship between the degree of preventive environmental programs and sales growth, manufacturing and environmental performances. Using a cross-sectional research design to test three hypotheses. a survey questionnaire was mailed to chemical companies in the USA. To investigate the relationship between the degree of Preventive environmental programs and sales growth, manufacturing and environmental performances. t-tests were used. According to the results of t-tests the higher preventive implementation programs achieved better manufacturing and environmental performances than lower preventive or reactive strategies. But there was no difference in sales growth between tow groups.

• 적정기술학회지
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• 제6권2호
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• pp.88-93
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• 2020

Kaanaeli Agri Business intends to increase Vanilla production by establishing A DEMO Plot at Ngyeku Village and Conducting Seminars/workshops to Farmer's groups, mainly on Sustainable Vanilla husbandry and Fish farming practices with affordable and customized methods involving: • Proper land use demarcation at household levels • Soil fertility management • Bio-intensive agriculture practices (Organic farming) • Environmental conservation and • To address Market issues, to medium and smallholder farmers of Meru district, Arusha-Tanzania.

• 국제학술발표논문집
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• The 9th International Conference on Construction Engineering and Project Management
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• pp.170-178
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• 2022

A high-performing Earned Value Management System (EVMS) can influence project success and help stakeholders meet project objectives. Although EVMS processes are well-supported by technical guidelines and standards, project managers often face challenges related to the project culture, team, resources, and business practices that make up the project environment within which an EVMS is being used. A comprehensive literature review revealed a lack of a data-driven and consistent assessment frameworks that can gauge the environment surrounding EVMS implementation. This paper will discuss the EVMS environment of construction and environmental projects, and examine its impact on cost performance. The authors used a multi-method approach to identify 27 environment factors that make up the EVMS environment, assessing them on 18 construction and environmental projects worth over $2 billion of total cost. Research methods employed include: (1) a literature review of more than 300 references; (2) a survey of 294 respondents; and (3) remote research charrettes with more than 60 participating expert practitioners. Culture (one of the identified environment categories) was found to be relatively more important in terms of its impact on the EVMS environment, followed by people, practices, and resources. These exploratory results show statistically significant differences in cost performance between completed projects with either a good or poor environment, for the sample projects. Key environment factors are outlined, and guidance is provided to practitioners around how to set up an effective EVMS environment in a construction or environmental project to inform decision-making and support achieving the project cost objectives successfully.