• 환경영향평가
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• 제6권2호
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• pp.123-135
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• 1997

The solid waste incineration facilities which cause environmental pollution. And those are some kind of loathing facilities for residents who do not want it. This problem could be solved by location feasibility study. The purpose of location feasibility study was to determine one site out of three candidate sites. This study which was done by the law, environmental and economic factor was considered for optimum site selection. Comparative evaluation among the candidate sites was done by ordinal scale and thus the optimum site was selected.

• 한국언론정보학보
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• 제77권
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• pp.9-35
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• 2016

이 연구는 채널A와 TV조선의 정치시사토크쇼가 특정 정당과 정치인, 그리고 특정 집단만을 대상으로 분노나 혐오와 같은 격렬한 부정적 감정을 불러일으키는 방식에 주목하고 이것을 한국 민주주의의 위기가 갖는 특성과의 관계 속에서 설명하고자 한다. 야당, 야권 정치인, 종북 세력에 대한 분노와 혐오가 주요 내용을 이루는 채널A와 TV조선의 정치시사토크쇼는 민주적 공론장으로 기능하기보다 가상적 정치참여를 통해 정치 과정에서 시민들을 실질적으로 배제시키는 데 기여함으로써 '배제의 정치'로서 한국의 민주주의 체제가 유지되는 데 매우 기능적이며, 이런 이유로 상업적 성공 여부와 관계없이 존속하고 있다고 보았다. 요컨대 한국의 민주주의에는 모든 시민을 체계적으로 배제시킨 채 이념 갈등을 증폭시키고, 그 과잉 감정의 혼란 속에서 모든 중요한 문제는 정치공학적으로 결정되는 심각한 문제가 있는데, 이런 정치 체제를 유지 존속시켜야 할 정치권력의 필요성이 채널A와 TV조선의 선정적이며 정파적으로 편향적인 정치시사토크쇼가 존속할 수 있는 조건이며, 채널A와 TV조선은 그런 정치 체제의 존속에 매우 기능적이기 때문에 정치적 영향력을 유지하며 존속할 수 있는 것이다.

• Environmental Analysis Health and Toxicology
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• 제22권4호
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• pp.339-348
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• 2007

A laboratory experiment was conducted to study the characteristics of leaching of Cr, Cu, and As from chromated topper arsenate (CCA)-treated wood. The wood species tested was hemlock spruce ($10\;cm\;{\times}\;10\;cm\;{\times}\;10\;cm\;tube$). The leaching experiment was conducted over 60 days using I L of leachants whose pHs were adjusted to 2.0, 3.7, and 1.6, respectively with nitric acid, and also using lake water, according to the OECD guideline. Each leachate was analyzed for Cr and Cu using flame-AAS, and for As using vapor generation-AAS. Three metals were loathed at the highest levels at pH 2.0 but almost at similar levels at the other conditions. Cumulative quantifies over 60 days of a leaching period were in order of As>Cu>Cr. As was predicted to leach with an increase in flux over a 10 year period, while Cr and Cu fluxes were predicted to decrease with time. This result suggest that arsenic can pose a health risk to humans over a long period of time, when CCA-treated wood is used for building facilities (e.g., playgrounds, residential purposes, etc.) with which humans frequently contact.

• 대한기계학회논문집A
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• 제25권10호
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• pp.1659-1670
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• 2001

It has been reported that cracks at mechanical fastener holes usually nucleate as elliptical corner cracks at the faying surface of the mechanical joints and grow as elliptical arc through cracks after penetrating the opposite surface. The weight function method is an efficient technique to calculate the stress intensity factors fur elliptical cracks using uncracked stress field. In this study the weight function method for three dimensional mixed-mode problem applied to elliptical comer cracks Is modified for elliptical arc through cracks and the stress intensity factors at two surface points of elliptical arc through cracks at mechanical fastener holes are analyzed by the weight function method. This study consists of two parts and in part I , the weight function method for elliptical arc through cracks is developed and verified.