• Title/Summary/Keyword: Qualitative reduction measures

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A Study on the Quantitative Evaluation Method of Small-Scale Environmental Impact Assessment

  • Dong-Myung CHO;Ju-Yeon LEE;Woo-Taeg KWON
    • Journal of Wellbeing Management and Applied Psychology
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    • v.6 no.2
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    • pp.39-46
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    • 2023
  • Purpose: The small-scale environmental impact assessment system in Korea was introduced and implemented in August 2000, but it has a problem that it cannot guarantee implementation due to the large proportion of qualitative reduction measures for each evaluation item. Therefore, when preparing a small-scale environmental impact assessment, research was conducted on how to improve the existing simple listing-type reduction measures and qualitative evaluation standards to quantitative reduction measures and evaluation standards reflecting regional characteristics. Research design, data and methodology: The small-scale environmental impact assessment system in Korea was introduced and implemented in August 2000, but it has a problem that it cannot guarantee implementation due to the large proportion of qualitative reduction measures for each evaluation item. Therefore, when preparing a small-scale environmental impact assessment, research was conducted on how to improve the existing simple listing-type reduction measures and qualitative evaluation standards to quantitative reduction measures and evaluation standards reflecting regional characteristics. Results: As a result of the analysis of qualitative and quantitative factors, the arithmetic sum of the qualitative factors of the total six projects is 160, accounting for 80% of the total number of reduction measures, and the quantitative factors are 40, accounting for 20%. Among them, the number of qualitative reduction measures reached 97.4% for animal and plant items, and more than 90% for air quality, noise and vibration, and eco-friendly resource circulation items. Conclusions: Therefore, it is necessary to avoid establishing qualitative reduction measures and set quantitative measures as the basis, but to specify the specifications, size, and installation location related to the reduction measures, and to calculate the numerical reduction efficiency.

Assessment of GHG Reduction Strategy - A Case of Environmental Facilities of Incheon City - (온실가스 감축 전략의 성과평가 - 지자체 환경기초시설 사례 -)

  • Jang, Jong-Ok;Lee, Sung Wook;Kim, Jong Dae
    • Journal of Environmental Science International
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    • v.26 no.4
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    • pp.509-519
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    • 2017
  • The study focuses on 32 environmental facilities in Incheon Metropolitan City, South Korea, categorizes them by sector: sewage treatment, wastewater treatment, incineration, landfill, water purification, and water supply. Their GHG reduction results are analyzed through quantitative and qualitative measures for 2012 to 2015. The study surveys and examines GHG reductions of the environmental facilities for two categories - facility operation and management. The findings are as follows: First, the GHG reduction rate, an emission-to-allocation ratio, from 2012 to 2015 is 89.67%. Second, GHG reductions coming from qualitative measures of facility management are even greater than those from quantitative measures of facility operation. Third, GHG reductions through facility operation are mostly attributable to overhauls, less use of facilities, resources recycling, process improvement rather than the betterment of fuels, facilities and energy efficiency. Fourth, higher reduction can be achieved by effective facility management, qualitative measures.

System Dynamics Application for the Evaluation of Greenhouse Gases Reduction Policy (시스템다이내믹스 기법을 이용한 온실가스 감축정책 평가)

  • Jang, Namjung;Kim, Min-Kyong;Yang, Go-Su
    • Korean System Dynamics Review
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    • v.14 no.1
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    • pp.55-68
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    • 2013
  • It is necessary to evaluate the greenhouse gases (GHGs) reduction policy by central and regional governments to set up the suitable GHG emissions measures. Quantitative, qualitative and synthetic methods have been adopted by previous researches to estimate GHG reduction policy. However, these methods mostly focused on the results of the reduction policy, rather than understanding and fixing the integrated structures of GHG emissions. In this research, System Dynamics(SD) was applied to 1 million green homes program, self-carfree-day system and carbon point program. The results showed that SD analyses could be appliable for the estimation of GHG reduction policy by developing the feedback loops and dynamic simulation model. SD can be consider as a supplementary tool to estimate the GHG reduction policies through the recognition of the structure in complex real system.

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A Study on Analysis of Defect Types and Measures for Reduction of Tile Construction for Apartment Houses (공동주택 타일공사의 하자 유형 분석 및 저감 대책에 관한 연구)

  • Park, Hyun Jung;Eom, Yong Been;Jeong, U Jin;Kim, Dae Young
    • Journal of the Korea Institute of Building Construction
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    • v.21 no.6
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    • pp.701-712
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    • 2021
  • As the domestic housing supply problem has been resolved, the apartment construction market has shifted to a consumer-oriented market that wants high quality, and in particular, expectations in the area of finishing quality have increased. Looking at the status of complaints regarding apartment housing defects supplied by Korea Land and Housing Corporation, tile-related complaints are the type occurring the most frequently. While the Ministry of Land, Infrastructure and Transport(MOLIT) is making an ongoing effort to reduce complaints related to defects, through approaches such as drafting amendments to 「Investigation of defects in apartment houses, calculation of repair costs, and standards for determining defects」, the provision of preventive measures has been insufficient. In addition, by reviewing studies, there has been insufficient research to construct a classification system after deriving the characteristics of each type using the qualitative knowledge of experts, various quantitative indicators, and suggesting measures for reduction according to the causes of each type. Therefore, this study will reflect qualitative indicators to use the AHP analysis that makes it easy to identify the relationship between defects by surveying construction experts. Then, by visualizing the weight of 'Possibility of recurrence after repair,' 'Degree of difficulty in repairing defects' and 'Fault frequency' using a radial graph, we will analyze the characteristics of each type of tile construction defect and establish measures for reduction according to the cause. This will improve the quality of the living environment and contribute to the establishment of a system for smooth defect management and reduction of defects in apartment tile construction.

Numerical Simulation of Nearshore Current Field - Application to structure of offshore breakwater construction - (해빈류장의 수치 시뮬례이션 - 이안 구조물 건설에의 적용 -)

  • 박종화;이순혁
    • Proceedings of the Korean Society of Agricultural Engineers Conference
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    • 1998.10a
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    • pp.305-310
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    • 1998
  • This research conducted concerning measures for the influence reduction to an investigation in the structure of offshore breakwater maintenance, an evaluation, a reexamination of the forecast, and a peripheral sediment transport environment. Furthermore, it aimed at the establishment of the beach transformation forecast method based on a hydraulic model study and a numeric simulation. A good result was obtained from a hydraulic model experiment and a numeric simulation as part of the basic research. And a qualitative evaluation of the flow field around the structure became possible since a numeric simulation examined flow field characteristics.

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Effect of Resource Mindfulness on Emotional State, Focusing on Anxiety and Stress Reduction (리소스 마인드풀니스에 관한 효과성 연구)

  • Seung Ho Lee;Do-Eun Lee;Yeoung-Su Lyu;Moon Joo Cheong;Hyung Won Kang
    • Journal of Oriental Neuropsychiatry
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    • v.35 no.2
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    • pp.177-189
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    • 2024
  • Objectives: This study aimed to evaluate the impact of Resource Mindfulness on participants' emotional state, focusing on anxiety and stress reduction and to explore the importance of psychological resources in this process. The effectiveness of Resource Mindfulness was investigated through both quantitative and qualitative analyses, examining its influence on subjective distress, mindfulness, core emotions, and identification of personal resources. Methods: This study involved 27 participants, including Korean medicine students, psychological counselors, clinical psychologists, and Korean medicine specialists, who attended a 2-night, 3-day M&L psychological support education program from July 2 to July 4, 2022. Participants were informed of the study's purpose and procedures. They provided written consent. Quantitative measures included Subjective Units of Disturbance Scale (SUDS), Five Facet Mindfulness Questionnaire (FFMQ), and Core Seven-Emotions Inventory Short Form (CSEI-s). Qualitative analysis was conducted using the "Drawing the Rooms of the Mind" technique. Pre- and post-program assessments were conducted to compare changes in subjective distress, mindfulness, and core emotions. Data were analyzed using paired t-tests and qualitative content analysis methods. Results: Significant reductions in subjective distress and improvements in mindfulness components were observed. Core emotions showed significant decreases in negative emotions. Qualitative analysis revealed increased tranquility, relief, and confidence, with resourceful places often being nature-related. Conclusions: Resource Mindfulness effectively reduced anxiety and stress and enhanced self-awareness and self-efficacy. It is useful for managing various mental health issues. Further research is needed to generalize these findings.

Qualitative Noise Characteristics of Rotating Polygonal Disk Applied to Digital Printer Systems (디지털 프린터에 적용되는 회전 다각형 디스크의 소음특성)

  • Jo, Jun-Hyeon;Kim, Hyeong-Chae
    • Proceedings of the Korean Society for Noise and Vibration Engineering Conference
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    • 2007.11a
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    • pp.1425-1429
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    • 2007
  • Consumer's product selection measures are being shifted from the units' operational performance to overall performance. Low noise, low vibration, and low power consumption rate, etc. which used to be additional quality indices, now become vital performance factors. Especially, noise and vibration characteristics are being considered as equivalent to/or even more critical than operational performance in certain products such as office machines and home entertainment systems, which share the same space with human being's daily life. Therefore, noise reduction and sound quality improvement technology becomes an inevitable design issue for those applications. Qualitative noise characteristics of rotating polygonal disk applied to digital printer systems are presented. Overall sound pressure level change and tonal noise variation with respect to the geometrical properties of polygonal disk, operational speed, and others are briefly discussed based on experimental results.

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Qualitative Noise Characteristics of Rotating Polygonal Disk Applied to Digital Printer Systems (디지털 프린터에 적용되는 회전 다각형 디스크의 소음특성)

  • Jo, Jun-Hyeon;Kim, Hyeong-Chae
    • Transactions of the Korean Society for Noise and Vibration Engineering
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    • v.18 no.6
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    • pp.606-611
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    • 2008
  • Consumer's product selection measures are being shifted from the units' operational performance to overall performance. Low noise, low vibration, and low power consumption rate, etc. which used to be additional quality indices, now become vital performance factors. Especially, noise and vibration characteristics are being considered as equivalent to/or even more critical than operational performance in certain products such as office machines and home entertainment systems, which share the same space with human being's daily life. Therefore, noise reduction and sound quality improvement technology becomes an inevitable design issue for those applications. Qualitative noise characteristics of rotating polygonal disk applied to digital printer systems are presented. Overall sound pressure level change and tonal noise variation with respect to the geometrical properties of polygonal disk, operational speed, and others are briefly discussed based on experimental results.

A study on the safety assessment of Hydrogen refueling system (수소 충전 시스템의 안전성 평가에 관한 연구)

  • Kim, Tae Hun;Oh, Young Dal;Lee, Man Soo
    • Journal of the Korea Safety Management & Science
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    • v.16 no.4
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    • pp.167-173
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    • 2014
  • Hydrogen energy is expanding in range for civil use together with development of pollution-free power sources recently, and it is judged that the use of hydrogen will increase more as a part of carbon dioxide reduction measures according to the Climatic Change Convention. Especially, it is thought that the securement of safety of the used dispenser will be the biggest obstacle in the use of high-pressure hydrogen because the hydrogen station is operated in a high pressure. This study found risks in the process and problems on operation by making use of HAZOP(6 kinds), a qualitative safety evaluation technique, and FMEA(5 kinds), a fault mode effect analysis, for the hydrogen charging system at a hydrogen gas station, derived 6 risk factors from HAZOP and 5 risk factors from FMEA, and prepared measures for it.

Evaluating Perceived Smartness of Product from Consumer's Point of View: The Concept and Measurement

  • Lee, Won-Jun
    • The Journal of Asian Finance, Economics and Business
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    • v.6 no.1
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    • pp.149-158
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    • 2019
  • Due to the rapid development of IT (information technology) and internet, products become smart and able to collect, process and produce information and can think of themselves to provide better service to consumers. However, research on the characteristics of smart product is still sparse. In this paper, we report the systemic development of a scale to measure the perceived product smartness associated with smart product. To develop product smartness scale, this study follows systemic scale development processes of item generation, item reduction, scale validation, reliability and validity test consequently. And, after acquiring a large amount of qualitative interview data asking the definition of smart product, we add a unique process to reduce the initial items using both a text mining method using 'r' s/w and traditional reliability and validity tests including factor analysis. Based on an initial qualitative inquiry and subsequent quantitative survey, an eight-factor scale of product smartness is developed. The eight factors are multi-functionality, human-like touch, ability to cooperate, autonomy, situatedness, network connectivity, integrity, and learning capability consequently. Results from Korean samples support the proposed measures of product smartness in terms of reliability, validity, and dimensionality. Implications and directions for further study are discussed. The developed scale offers important theoretical and pragmatic implications for researchers and practitioners.