• Journal of the Korean Wood Science and Technology
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• 제45권4호
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• pp.419-431
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• 2017

The forest slopes cause substantial local changes in soil properties and an increase in soil erosion after extreme rainstorms. The high soil erosion rates on forest slopes need the effective use of growing media to control the soil runoff. Therefore, we prepared six different lignocellulosic growing media such as peat, perlite, and wood meal as the base materials and carboxymethyl cellulose (CMC), glucomannan, starch, old corrugated containerboard, and computer printout as the additional materials for the prevention of simulated rainfall-induced runoff. The growing media containing old corrugated containerboard efficiently reduced the percentage of soil runoff; however, it could not completely cushion the influence of crust. The best results for plant growth, except in the leaf area, were also obtained with the growing media containing old corrugated containerboard, suggesting an interesting way of paper recycling and an economic benefit for plant or crop growth in forest slope.

• Journal of Forest and Environmental Science
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• 제25권1호
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• pp.25-33
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• 2009

An ethno-medical investigation was carried out to understand the use of plants in indigenous health care practice of the Hajong tribe community in North Eastern Bangladesh. The study of ethnobotany relating to any tribe is in itself a very intricate or long-winded process. The present study was done through structured questionnaires in consultations with the tribal practitioners and has resulted in the documentation of 25 plant species belonging to 21 families including herbs (36%), shrubs (32%), trees (28%) and climber (4%) were frequently used by the Hajong tribe for curing 27 ailments. For curing ailments, the use of aboveground plant parts was higher (86.67%) than the underground plant parts (13.33%). Leaf was used in the majority of cases for medicinal preparation (13 species), followed by fruits (7 species), root/rhizome (4 species), whole plant (3 species) and besides these, seed, latex and bark were used one species each, respectively. The study thus underlines the potentials of the ethnobotanical research and the need for the documentation of indigenous healthcare knowledge pertaining to the medicinal plant utilization for the greater benefit of mankind.

• 대한간호학회지
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• 제30권2호
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• pp.425-436
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• 2000

This study was carried out to assess home health care needs for welfare of solitude elderly person. The subjects of this study were 90 welfare solitude elderly person in Pusan City. Data were obtained by interview and observation using a structured questionnaire. The collected data were analyzed by t-test, ANOVA with SAS program. The results are as follows. 1. Among the home care nursing needs, environmental nursing needs topped the list, followed by spiritual, physical, psychological, communication & health knowledge and ADL nursing needs. 2. Home care nursing needs showed a significant differences by the general characteristic of the respondents. .In the age, there were significant differences in physical and communication & health knowledge nursing needs. .In the religion, there were significant differences in spiritual nursing needs. .In the marital status, there were significant differences in environmental nursing needs. .In the nursing provider, there were singificant differences in ADL, environmental and communication & health knowledge nursing needs. .In the medical benefit, there were significant differences in ADL, environmental, physical and communication & health knowledge nursing needs. .In the disease, there were significant differences in ADL nursing needs.. .In the household maintenance, there were significant differences in environmental nursing needs.

• 한국미생물학회:학술대회논문집
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• 한국미생물학회 2002년도 추계학술대회
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• pp.22-26
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• 2002

There are a number of ways in which environmental microbiology and microbial ecology will benefit from DNA micro array technology. These include community genome arrays, SSU rDNA arrays, environmental functional gene arrays, population biology arrays, and there are clearly more different applications of microarray technology that can be applied to relevant problems in environmental microbiology. Two types of the applications, bacterial identification chip and functional gene detection chip, will be presented. For the bacterial identification chip, a new approach employing random genome fragments that eliminates the disadvantages of traditional DNA-DNA hybridization is proposed to identify and type bacteria based on genomic DNA-DNA similarity. Bacterial genomes are fragmented randomly, and representative fragments are spotted on a glass slide and then hybridized to test genomes. Resulting hybridization profiles are used in statistical procedures to identify test strains. Second, the direct binding version of microarray with a different array design and hybridization scheme is proposed to quantify target genes in environmental samples. Reference DNA was employed to normalize variations in spot size and hybridization. The approach for designing quantitative microarrays and the inferred equation from this study provide a simple and convenient way to estimate the target gene concentration from the hybridization signal ratio.

• 토지주택연구
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• 제11권3호
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• pp.21-31
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• 2020

This paper quantitatively analyzes the investment performance of the environmental improvement fund focusing on the sales effect and the housing benefit effect. The analysis of this study focused on the effects of sales and housing benefits for completed business sites among the business sites supported by the Environmental Improvement Fund. The analysis results are as follows. First, it appears that the sales effect of the completed workplace is effective compared to the amount of investment, so it seems that the purpose of industrial integration of the environment improvement fund is being achieved. Second, it was found that there are variations by workplace and region in housing benefits. This seems to be due to the fact that profitability can be neglected by reflecting the characteristics of residential facilities built by private businesses. The Environmental Improvement Fund is a policy fund that pursues both profitability and publicity. Therefore, it is necessary to transform the structure of the fund to expand support for industrial infrastructure with high publicity. To this end, it is necessary to establish a long-term management plan that equitably considers the profitability and publicity of the environmental improvement fund.

• 환경정책연구
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• 제12권4호
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• pp.71-92
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• 2013

보편적인 공공투자사업과는 달리, 환경관련 투자사업은 사업추진으로 인한 비용과 편익의 부담주체가 동일하지 않다. 비용의 큰 비중은 현재세대가 부담하지만 그 편익은 미래세대가 더 많이 누리는 구조인 것이다. 이러한 특성을 고려하지 않은 채 일률적인 사회적할인율을 적용하는 것은 환경투자사업의 경제성 평가과정에서 미래 세대의 편익이 상대적으로 과소평가되는 문제를 발생시키는 것으로 인식된다. 이에 미래 세대의 편익이 경제성 평가과정에서 보다 적절히 반영될 수 있는 사회적할인율과 그 적용방법을 모색해 보았다. 최근의 경제상황 변동을 고려한 사회적할인율을 추정해 본 결과, 적정 사회적할인율은 2.9%에서 4.9% 사이의 범위를 갖는 것으로 나타났다. 또한 기 수행된 실제 예비타당성조사 자료를 분석하여 환경투자사업의 전형적인 편익발생 패턴을 분석해 보았으며, 사회적할인율을 다양한 방식으로 적용해 보았을 때, 이의 조정이 경제성 평가결과에 어떠한 영향을 미칠 수 있는지를 살펴보았다. 사회적 할인율이 현행 수준보다 1%p. 가량 인하조정될 경우 사업의 편익/비용 비율은 약 6%가량 개선될 수 있는 것으로 분석되었으며, 이때 미래 세대의 편익을 보다 적절하게 고려하기 위해서는 분석기간별로 차등적인 사회적할인율을 적용하는 것이 바람직함을 지적하였다. 이러한 방법은 편익추정과정에서 발생할 수 있는 추정위험 등의 기술적 요인도 보완해줄 수 있는 효과적인 방안이라 평가된다.

• 한국환경보건학회지
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• 제48권5호
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• pp.255-265
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• 2022

Background: Research in environmental health (EH) is of crucial strategic importance for contemporary society. It is becoming even more critical in light of the increasingly rapid pace of environmental changes, opportunities, and threats. Objectives: This study aimed to identify trends and the prospective of environmental health research using SWOT analysis. Methods: The trends in environmental health research were reviewed in previous studies and reports. Reviewed manuscripts were searched for using the keywords of 'environmental health' and 'environmental hygiene' in the KCI (Korean Journal of Citation Index), KISS (Korean Academic Information), PubMed, and Google Scholar. Results: It is essential to center the EH research agenda around key priorities focusing on technological innovation, job creation, and the increasingly prominent role of the private sector. Given the rapidly evolving global sustainability agenda, greater clarity on the ever-increasing sources of complexity and growing expectations of the public might be needed. This requires the identification of criteria to identify EH research priorities with the ultimate goal of maximizing societal benefit. Public health relevance, such as extent and severity of health impact, level of exposure, and inequalities of effects, could be included. Conclusions: Considering the recent interest in and importance of environmental health, a comprehensive approach to environmental health research should be required through the application of the latest science and technology, citizen participation, and environmental health surveillance systems.

• 한국해양환경ㆍ에너지학회지
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• 제17권4호
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• pp.274-282
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• 2014

정부는 해양쓰레기에 대한 모니터링 및 환경영향평가 등 과학적인 연구사업을 통해 해양쓰레기의 영향을 저감시키고 체계적으로 관리하기 위한 해양쓰레기 오염대응 기술개발사업의 시행을 고려하고 있다. 이에 본 연구에서는 이 사업에 대한 경제적 타당성을 분석함으로써 정책판단에 있어서 유용한 정보를 제공하고자 한다. 이를 위해 경제성 분석 지표인 순현재가치, 편익/비용 비율, 내부수익률을 분석하여 제시한다. 분석결과 순현재가치, 편익/비용 비율, 내부수익률은 각각 457억원, 2.72, 17.12%로 산정되어 각각 0, 1.0, 5.5%를 상회하므로 해양쓰레기 오염대응 기술개발사업은 비용-편익 분석을 통과한다. 따라서 해양쓰레기 오염대응 기술개발사업을 시행하는 것은 사회적으로 바람직하다.

• 한국기술혁신학회:학술대회논문집
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• 한국기술혁신학회 2015년도 추계학술대회 논문집
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• pp.479-487
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• 2015

전국의 지하수 관정은 2012년 기준 1,474 천 개소이며 지하수 이용량이 총 용수 이용량의 12%를 차지하고 있다. 수자원장기기본계획은 2021년 전국 용수 수요가 공급을 초과할 것으로 전망하고 있어 지하수 이용이 더욱 중요한 과제가 되고 있다. 우리나라는 지하수 활용을 위한 인공함양이나 강변여과 보다 관정에 크게 의존하고 있으므로 관정의 경제성에 대한 평가가 우선적으로 이루어져야 할 것이다. 따라서 본 논문은 관정에 의한 지하수자원 활용이 경제적인지 아닌지를 분석하는 것에 목적을 둔다. 관정의 편익은 크게 3가지로 나누어 첫째, 활용가치로 음용수 및 농공용수의 공급가치, 둘째 비활용 가치로 잠재활용 대비 미래를 위한 부존가치를 포함하고 있다. 또한 비용은 관정의 설치비용 및 교체비용, 관리비용, 그리고 폐공의 환경오염 비용 등을 모두 포함한다. KDI의 수자원사업 예비타당성 가이드라인과 미국 환경청 그리고 세계은행의 지하수자원 비용-편익분석 모델을 원용하여 관정의 비용편익 비율을 계산하였다. 그 결과 지하수 관정의 편익이 비용보다 2.98배 높아 지하수 관정에 의한 지하수자원 공급이 경제성이 있는 것으로 나타났다.

• 상하수도학회지
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• 제29권3호
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• pp.395-406
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• 2015

This research carried out an analysis on input cost and leakage reduction effect by leakage reduction method, focusing on the project for establishing an optimal water pipe network management system in the Taebaek region, which has been executed annually since 2009. Based on the result, optimal cost-benefit analysis models for water distribution network rehabilitation project were developed using DEA(data envelopment analysis) and multiple regression analysis, which have been widely utilized for efficiency analysis in public and other projects. DEA and multiple regression analysis were carried out by applying 4 analytical methods involving different ratios and costs. The result showed that the models involving the analytical methods 2 and 4 were of low significance (which therefore were excluded), and only the models involving the analytical methods 1 and 3 were suitable. From the result it was judged that the leakage management method to be executed with the highest priority for the improvement of revenue water ratio was installation of pressure reduction valve, followed by replacement of water distribution pipe, replacement of water supply pipe, and then leakage detection and repair; and that the execution of leakage management methods in this order would be most economical. In addition, replacement of water meter was also shown to be necessary in case there were a large number of defective water meters.