• Advances in environmental research
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• 제6권3호
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• pp.203-216
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• 2017

For survival of human beings clean water is an essential commodity whereas contamination in drinking water threatens to mankind. The main cause of water contamination is social and development activities of human being along with increasing population. The community in the study area has acute shortage of drinking water along with about 40 to 60% has no access to safe drinking water. This study indicates drinking water quality of two major sources of coastal belt of Karachi one is supplied by Karachi Water & Sewerage Board (KWSB) as tap water and the other through groundwater. The physicochemical analysis was carried out by following the standard methods for checking the quality of drinking water. The analyzed results showed that the quality of groundwater was unfit as potable water. The most critical situation was observed as high level of contamination followed by high turbidity and increased salinity levels. TDS in surface water were found 12% above and TDS in groundwater was 20% below the National Drinking Water Quality Standards (NDWQS) of Pakistan as well as the permissible WHO drinking water quality guidelines.

• 한국소음진동공학회논문집
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• 제16권8호
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• pp.797-805
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• 2006

The sound quality characteristics of refrigerator noise in an anechoic chamber and in a real living environment for 30 models of refrigerators were investigated. Subjective evaluation experiments were conducted to determine subjective tolerance level for refrigerator noise. Refrigerator noise was played from a loudspeaker at the position normally occupied by a refrigerator in a real living environment. A nine-point scale was used to measure subjective satisfaction of the sound pressure levels for refrigerator noise. Point 3 on the scale corresponded to a sound pressure level of about 30 dB(A). Seventy percent of the participants were satisfied with this level of refrigerator noise. A semantic differential test was also conducted to evaluate the sound quality of refrigerator noise. From the results of correlation and multiple regression analyses on the psychoacoustical parameters and subjective evaluations of 30 refrigerators, sound quality indices which predict the subjective rating score were proposed.

• 농촌계획
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• 제28권1호
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• pp.27-35
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• 2022

This study aims to establish the indicator system of the quality of life of rural residents and to estimate the weights among criteria or sub-criteria that constitute the indicator system of the quality of life using AHP(Analytic Hierarchy Process) method. Indicator system consists of four criteria, that is, health care, eduction & culture, living environment, and income and jobs. Each criterion include three sub-criteria that make up corresponding criterion. The results show that income and jobs was most highly evaluated among the four criteria. It was followed by health care, living environment, and eduction & culture. Among the total 12 sub-criteria, annual income was most highly evaluated, followed by medical service level, job satisfaction, and public transportation environment in terms of global weight which was deduced from expert questionnaire survey. This study implies that rural development policy needs to focus on increasing rural residents' income by creating good quality occupations and increasing the level of medical services, and expanding public transportation services in rural areas. This study has failed to collect local residents' opinions regarding their quality of life in spite of the efforts to reflect the opinions from various expert groups, which is the limitation of this study.

• 한국습지학회지
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• 제24권4호
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• pp.256-267
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• 2022

본 연구는 대청호 상류에 있는 서화천 유역을 대상으로 지난 5년간 측정된 장기간의 수질모니터링 자료를 이용하여 수질 현황 및 추세를 분석하였다. 서화천 유역은 대청호의 녹조 발생 감소 및 수질 개선을 위한 사업이 진행되고 있으며 상수원 수질 관리를 위해서 지속적 관리가 필요하다. 현재 수질 평가는 수질 관리 지점을 파악하는 것이 목적이며 좋은물 등급과 통합수질지수(Water Quality Index, WQI)를 사용하였다. 추세 평가는 Mann-Kendall test와 Sen's Slope를 이용하여 수질 개선사업을 통한 효과를 평가하였다. 평가결과, 현재는 수질지수를 통해 수질 관리가 필요한 유역과 시기를 확인하였으며 추세분석을 통해 개선사업으로 인한 효과를 확인하였다. 본 연구를 통해 장기 수질모니터링 자료를 이용한 수질 현황 및 개선 효과를 검토할 수 있어 향후 비슷한 유형의 유역에서 적용 가능하리라 판단된다.

• 환경영향평가
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• 제30권2호
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• pp.75-88
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• 2021

본 연구에서는 금강 수계의 자동측정망 중 6개 지점을 선정하고, 이와 동일하거나 인근에 위치해 있는 수질측정망 지점을 대상으로 두 지점의 수질특성 파악하고 통계 분석을 통하여 상관성을 평가하였다. 또한, 수질 분석결과를 활용하여 수질 지수로 변환하고 등급으로 표현해 비교하였다. 연구에 필요한 자료는 최근 4년간(2016-2019)의 국가물환경측정망 데이터를 활용하였으며 수온, pH, EC, DO, TOC, TN, TP를 평가항목으로 선정하였다. 수질 분석 결과, 자동측정망과 수질측정망의 수질농도는 일부 측정값의 차이는 보였지만 대부분 지점에서 일정한 비로 변동하는 경향을 보였다. 항목 간 상관분석결과 수온, EC, DO 항목은 측정망간 상관성이 매우 높았고, TOC, TN, TP 항목은 기본항목에 비해 낮은 상관성을 보였으나 일부 측정망을 제외하고 0.7 이상(상관계수 r)의 높은 상관관계를 나타냈다. 수질 지수 분석결과 자동측정망 수질지수와 수질측정망 수질지수가 비슷한 경향을 보이는 것으로 평가되었으며, 두 결과 모두 하류로 갈수록 지수점수는 낮아져 오염도가 증가되고 있음을 쉽게 파악할 수 있었다.

• 한국물환경학회지
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• 제20권2호
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• pp.93-103
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• 2004

• 품질경영학회지
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• 제51권3호
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• pp.329-346
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• 2023

Purpose: The purpose of this study is to analyze the influence of physical and social servicescape of apartment community facilities on residential satisfaction and quality of life among newlyweds who have been married for less than 7 years. Methods: In this study, a survey was conducted among 361 Newlywed Hope Town residents who have been married for 7 years or less, and frequency analysis, reliability, validity, and hypothesis testing were conducted using SPSS 22.0. Results: The results of this study are as follows. First, the physical service environment (spatiality, convenience, aesthetics, and comfort) has a significant effect on residential satisfaction. Second, social service landscape (human service, customer similarity, customer suitability) has a significant effect on residential satisfaction. Third, the physical service landscape has a significant effect on quality of life. Fourth, the social service landscape had a significant impact on quality of life. Finally, residential satisfaction has a significant effect on quality of life. Conclusion: This study found that community facilities in Newlywed Hope Town, an apartment complex for newlyweds who have been married for less than seven years, affect residential satisfaction and quality of life in both the physical and social environments. The significance of the study is that the community of the Newlywed Hope Town apartment was approached as a physical environment such as spatial organization and facilities and a social environment of human services, and the relationship between the effects on residential satisfaction and quality of life was examined. In the future, it is necessary to study the effects of communities for young couples such as the Newlywed Hope Town apartment on residential satisfaction and quality of life.

• 한국실내디자인학회:학술대회논문집
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• 한국실내디자인학회 2007년도 춘계학술대회 논문집
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• pp.119-124
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• 2007

This study focuses on the design guidelines for planning and implementing the spatial characteristics in the living environment for the New Silver-Generation through the case analysis of "Serviced Residence", which has recently become very popular due to active demands for handy functions and services in flew Silver-Generation living environment. Nowadays, with relaxation of the phenomenon of lack of available houses, the focus of the construction market has shifted from builders to customers. Also, with the advent of the New Silver-Generation with money to spend to improve the quality of their lives, there has been high demand for living environment that provides high-quality services for comfort and convenience. Means to provide high-quality services for comfort and convenience in New Silver-Generation environment warrant much consideration, and hence the current study on Serviced Residence, which has become very popular has been taken up. This study on Serviced Residence will point out the problems found in the current Silver Residence environment and it will serve as an alternative for the living environment of the Silver Generation.

• 한국입자에어로졸학회지
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• 제14권3호
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• pp.81-88
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• 2018

The market for improving the indoor air quality is continuously increasing, and air cleaners are the representative products. As interest in indoor air quality increases, so are the ultrafine particle which are harmful to the human body. Despite its many advantages, electrostatic precipitators are less used in indoor air due to ozone production. In this study, the carbon fiber sheet was applied to the discharge electrode and compared with the conventional tungsten wire discharge electrode. The particle collection efficiency and the amount of ozone generation were measured for 10-100 nm particles. Furthermore, it was applied to commercial air purifier with electrostatic precipitator to compare particle removal performance. The carbon fiber sheet type discharge electrode generates a small amount of ozone, and thus it can be applied to improve indoor air quality.

• 한국지하수토양환경학회지:지하수토양환경
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• 제26권6호
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• pp.176-185
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• 2021

This paper aims to develop a new paradigm for groundwater management which is compatible with integrated water management policies in Korea. Three key roles of groundwater are defined for addressing water cycle distortion, high water stress, water quality degradation, aquatic ecosystems deterioration, and water-related hazards. Firstly, groundwater plays an important role in contributing soundness of water cycle as a component of water cycle. Secondly, it is a local water resource to ensure water supply sustainability. Thirdly, groundwater is an essential water resource for drought and emergencies. In order to support the groundwater roles, we propose a paradigm shift for groundwater management and policy directions towards integrated water management. The new paradigm consists of managements for sound water cycle on a watershed scale and groundwater environment(quantity, quality, and groundwater dependent ecosystems) managements for both human and nature. A prospective management also constitutes the new paradigm. In addition, this paper proposes four policy directions in groundwater management. The policies emphasize the integrated management of groundwater and surface water, management of groundwater environment(quantity, quality, and groundwater dependent ecosystems), management of groundwater uses for water sustainability and security, and enhancement of groundwater publicity.