• 한국지리정보학회지
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• 제20권3호
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• pp.170-180
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• 2017

본 연구는 대구시 지산 하수처리장을 사례로 환경기초시설의 입지가 지가의 차이에 미치는 영향을 분석하였다. 이를 위해 지산 하수처리장으로부터 200m 단위로 400m까지 두 개의 구역을 각각 설정하고 총 822개의 개별공시지가 자료를 취득하였다. 지산 하수처리장 설립 전후의 지가의 차이를 비교하기 위하여 대응표본 t 검정을 실시하였다. 그 분석 결과, 각 구간의 지가가 하수처리장 설립 후 약간 상승하였고, 이러한 차이가 유의한 것으로 나타났다. 또한, 하수처리장 설립 전에는 200m 이내의 평균 지가가 200-400m의 평균 지가 보다 낮았지만, 설립 후에는 양 구간에 평균 지가의 차이가 거의 없었다. 지산 하수처리장은 악취가 거의 나지 않고 하수의 처리 용량이 적으며 그 주변지역은 대부분 상업시설이나 주거시설로 이용되고 있어서 기존의 연구와 달리 하수처리장의 입지가 주변 지가의 하락에 거의 영향을 미치지 않은 것으로 나타났다. 본 연구의 결과는 환경기초 시설의 입지로 인해 갈등하는 정부와 지역 주민들에게 새로운 근거자료로 제시될 수 있을 것이다.

• 지질공학
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• 제16권3호
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• pp.307-313
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• 2006

• 한국소음진동공학회:학술대회논문집
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• 한국소음진동공학회 2005년도 춘계학술대회논문집
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• pp.962-965
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• 2005

A high intensity progressive wave tube is installed at Korea Aerospace Research Institute (KARI) for acoustic environmental tests. The test facility has 700 mm x 800 mm cross-sectional area, and provides acoustic environment of 165 dB over the frequency range of $25Hz{\sim}10,000Hz$. The facility consists of a 6 m long acoustic wave tube, acoustic power generation systems, gases nitrogen supply systems, and acoustic control systems. This paper describes how the basic parameters of the facility and power generation systems are controlled to meet the requirement of the test. The shape and length of the tube has been designed by using the size of test objects and the wave propagation characteristics of the tube. The capacity of acoustic power generation systems is determined by the energy conversion of acoustic wave and the efficiency of acoustic modulators. Moreover, the paper introduces test run results of the tube. Overall of 163dB has been generated by using the test facility.

• 한국생산제조학회지
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• 제7권4호
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• pp.35-41
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• 1998

The workplace noise environment is composed of three basic elements : manufacturing (in a generic sense) facilities, office areas, and the community around the facility. Work must be done by all employees , and this involves communication within a variety of locations within the facility ; areas may be extremely noisy, moderately noisy, or quiet, such as an office. At the same time, the facility should not be annoying to the community. In this paper, the workplace environmental noise of office areas in power plant are studied. Turbine generator in power plant generates the noise of 90∼95 dB(A) in the frequency range of 1 kHz, which may cause occupational hearing loss. By abatement method which are made of isolation material and distance damping effect, about 29.5 dB(A) reduction has been obtained in office areas of the Power Plant . But, the workplace environmental noise of office areas in the power plant is not suited to office's purpose.

• 유기물자원화
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• 제8권4호
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• pp.67-77
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• 2000

환경기초시설의 성공적인 민영화를 위하여 환경보전이라는 사회적 동기와 이윤추구라는 기업의 경제적 동기를 동시에 만족시킬수 있는 정책이 필요하다. 환경기초시설은 영리목적이 아니므로 양질의 환경서비스를 달성하기위한 민간경영마인드를 도입하여야 할 것이다. 외국사례를 보면 지역의 안정된 경제적 바탕 위에 철저한 경쟁을 통해 비용우위의 사업자를 선택하여 민영화를 실시하였다. 따라서, 민 관의 협력과 업무분담이 효율적이었고, 이를 위해서는 무엇보다도 지자체의 독립적 예산 마련이 필수적임을 알 수 있었다 그러나 국내 환경기초시설의 중요한 문제점으로 운영관리상의 낮은 효율과 기술적용에 있어 국산화율이 50%로 정부국고를 낭비하는 등 해결해야할 문제점이 많은 것으로 나타났다. 이를 해결하기 위해 민자유치촉진법 미비점 보완, 시범 민영화 플랜트 운영과 효율적인 민영화를 위한 연구사업 추진, 외국의 사례연구 및 현장시찰, 환경기초시설을 지방자치의 경영수익사업으로서 확대발전을 통한 환경예산의 관리 및 지원체계를 마련하는 방안을 강구할 수 있었다.

• 한국실내디자인학회논문집
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• 제25권2호
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• pp.83-91
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• 2016

This study is a basic research to suggest user-centered healthcare environmental color, which aims to analyze tendency of color consciousness and preference depending on the user characteristics (generation, gender, residential area, and environment). For this purpose, this study constructed an analysis tool through the literature review with regard to environmental color of healthcare facility and influential factors of color preference. Besides, an online survey regarding general usage and satisfaction, health related color consciousness, and color preference tendency of healthcare facility was conducted targeting from 20s to 60s, total 1,500 persons. The results of this study are as follows: (1) The usage and satisfaction of healthcare facilities were higher for older generation and accessible urban area. (2) The respondents were aware that color and health are related, recognizing 'green' as healthy and stress relieving color. Besides, 'natural' and 'clear' was the highest in health related color image. 'Light' which relates to vitality was high as well for older generation. (3) In the color preference tendency survey, hue PB was generally the most highly preferred, in details, younger generation preferred B and R while older generation preferred G. The survey also showed high value and chroma were preferred, while female and younger generation preferred high value of 9.0 and low chroma close to achromatic color, which presented older generation preferred vivid color.

• 한국소음진동공학회:학술대회논문집
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• 한국소음진동공학회 2002년도 춘계학술대회논문집
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• pp.867-872
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• 2002

A high intensity acoustic test facility is constructed at Korea Aerospace Research Institute (KARI) by 2003. The reverberant chamber of the facility has a volume of 1,228 cubic meters and shall provide an acoustic environment of 152 dB over the frequency range of 25 Hz to 10,000 Hz. The facility consists of a large scaled reverberant chamber, acoustic power generation systems, gases nitrogen supply systems, and acoustic control systems. This paper describes how the basic parameters of a chamber and power generation systems are controlled to meet the requirement of the test. The volume of a reverberant chamber is controlled by the size of test objects and the reverberant characteristics of a chamber. The capacity of acoustic power generation systems is determined by the energy absorption of a chamber and the efficiency of acoustic modulators. Simple math is employed to calculate the required power of acoustic modulators. Moreover, the paper explains how the distribution of sound pressure level at low frequency is checked by analytical and numerical methods.

• 청정기술
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• 제5권2호
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• pp.53-61
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• 1999

대형 산업용 환경폐기물 처리 및 열병합 플랜트의 연소 및 소각 공정 후 발생하는 배기가스의 폐열회수장치 설계 방법을 제시하였다. 본 연구는 폐열회수장치의 기본 설계 개념을 폐열회수를 위한 보일러와 폐열을 이용한 증기 동력 사이클로 구성되는 것으로 가정하였고, 폐열회수장치에 필요한 각 구성요소들에 대한 모델링 기법과 그에 따른 설계 기준 및 설계 개념을 기술하였다. 또한 본 설계방법을 이용하여, 동일한 배기가스 조건에 대해, 폐열회수 보일러의 작동 압력 및 폐열회수 열교환기 설계에 따라 폐열회수장치의 열성능이 어떻게 변화되는지를 검토하였다.

• 한국환경과학회지
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• 제29권2호
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• pp.145-154
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• 2020

The purpose of this study is to examine the differences of use behavior and environmental perception of a park and to analyze the influence of environmental perception factors on park satisfaction among 7 parks in Suseong-gu, Daegu. The data from the 255 questionnaires of young adults (30-59) and old adults (more than 60) who use the park more than once a week were used for the analysis. In terms of park use behavior, young adults used the park for walking and jogging mainly on weekday evenings, while old adults used the park for walking and rest mainly during weekday daytimes. In addition, old adults used the park more times a week than young adults, and spent more time in the park. In the analysis of the environmental perception of the park, similar results were found in both age groups but overall, old adults were more satisfied with the park environment than the young adults. As a result of analyzing the influence of environmental perception factors, it was determined that park satisfaction in young adults has a significant influence on 'use amenity', 'use convenience', 'facility suitability', and 'landscape diversity' in this order. On the other hand, park satisfaction for old adults has an influence on 'use amenity', 'facility suitability', and 'use convenience' in this order. The findings of this study can be used as an effective basic data for future park planning considering age groups.

• 한국환경과학회지
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• 제29권11호
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• pp.1109-1123
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• 2020

In this study, the amount of harmful fungi and bacteria contained in the drainage and culture medium from the paprika hydroponic facility is identified. In addition, by proposing the necessity of effective purification of discharged drainage, this study attempted to confirm the possibility of drainage reuse. Finally, this study provides basic data on the basis for calculating the need for purification facilities in the future, as well as improvements in horticulture facility for sustainable agriculture. As a result of the analysis, a total of 12 types of fungi were detected in paprika medium and 10 types of fungi were detected in the drainage, and their densities were 130 and 68, respectively. Among the fungi detected in the media and drainage of the paprika hydroponic facility, the fungi with the highest detection frequency are Fusarium, Phytophthora, and Pythium. In the case of bacteria, a total of 2 types of bacteria were detected in the paprika facilities, and the density was 28 and 23, respectively. Therefore, in order to reuse the drainage and settle the circulating hydroponic cultivation system, a water treatment process capable of appropriate treatment is required.