• Title/Summary/Keyword: economy evaluation

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Study on Characteristics of Car Air-con Compressor Under Bench System Fuel Economy Simulation Condition (벤치 연비 모사 조건에서 차량용 에어컨 압축기의 특성에 관한 연구)

  • Yoo, Seong-Yeon;Kim, Young-Shin
    • Transactions of the Korean Society of Mechanical Engineers B
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    • v.36 no.7
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    • pp.705-710
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    • 2012
  • In this study, an experiment on an air conditioning test bench was performed to verify the possibility of fuel economy simulation for the SC03 mode, North America fuel economy certification mode with a/c on condition, one of the vehicle fuel economy evaluation modes. The air conditioning test bench used in this study had each chamber simulating the actual vehicle air conditioning system and the controlling temperature, humidity, and air flow velocity to reproduce environmental conditions. Reliable results were obtained about the compressor RPM and inlet air velocity in front of the condenser corresponding to vehicle speed and air velocity in front of the vehicle, respectively, in the simulation of the SC03 mode, previously performed in CWT, in an air conditioning test bench. It was also discovered that there was a distinct difference in the fuel economy depending on the difference in the compressor displacement in the simulation test of the SC03 mode in the air conditioning test bench under various displacement conditions of the compressor.

The Influence of Convergence Characteristics of Social Economy Internet Shopping Malls on Customer Trust and Loyalty (사회적경제 인터넷 쇼핑몰의 융합 특성이 고객 신뢰도, 충성도에 미치는 영향)

  • Kim, Eun-Jeong;You, Yen-Yoo
    • Journal of the Korea Convergence Society
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    • v.12 no.6
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    • pp.127-137
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    • 2021
  • Korea's social economy promotion policy is a government-led policy, and its success or failure depends on how well it is known to the residents. The Jeonnam Social Economy Internet Shopping Mall was also established as a government-led road, but its popularity is low. This study examines the influence between reliability and loyalty of the 'Jeonnam Social Economy Shopping Mall'. 267 samples were used and verified with the SPSS 22.0 program. As a result of the study, the characteristics of shopping malls had a significant effect on customer trust and loyalty, and played a mediating role between reliability and loyalty. The residential area and the purpose of purchase had a moderating effect. The limitation of research is that comparative research with other shopping malls is insufficient. In the future, comparative evaluation should be carried out in relation to research on social economy enterprise products by region.

Love and Economy in Cross-border Marriages in South Korea (사랑과 경제의 관계를 통해 본 이주결혼)

  • Lee, Jae Kyung
    • Women's Studies Review
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    • v.26 no.1
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    • pp.183-206
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    • 2009
  • This study attempts to explore a phenomenon of an expansion of emotional capitalism in the context of marriage migration. Emphasizing that 'emotion,' 'love,' 'affection,' 'intimacy,' and 'care' are neither materialistic nor a work, and noting that they are social roles attached to natural femininity and that they are separated from the economic realm, modern myth has been challenged by the increase of marriage industry, emotional/service work, and care industry. This study discusses the ways in which individual desires for love and intimacy and her/his economical needs are combined or negotiated. Specifically, this study 1) reviews existing literature on how 'love' and 'intimacy' has been combined with economy under capitalism in general, 2) discusses the ways in which a marriage has been commercially negotiated within the context of South Korea, 3) analyzes combined aspects of 'love' and 'economy' within cross-border marriages and suggests that cross-border marriages, even though they are highly commercially negotiated, may not be fully explained by 'economy' only as other marriages have both aspects of 'love' and 'economy.' An analysis on 'love' and 'economy,' not only separated from each other but also controversial, is essential for understanding 'intimacy' and transitions of Korean families in post-modern era. However, the evaluation criteria for commercial trades in 'love' and 'intimacy' have not developed yet. Whereas a certain trade is inevitable or essential, others may threaten our lives. Developing the ethical and political evaluation criteria on such commercial trades requires future study.

A Study on the POE (Post Occupancy Evaluation) according to the Residential Environment of Mixed-use Apartment Complexes In Seoul

  • Ha, Man Joon
    • International Journal of High-Rise Buildings
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    • v.9 no.2
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    • pp.197-212
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    • 2020
  • In this study, POE(Post Occupancy Evaluation) evaluation indexes were selected into six categories through the consideration of theories and prior research. Therefore, qualitative supply can be achieved through POE according to the aspect of residential environment after the quantitative supply of mixed-use apartment complex by the population concentration in Seoul due to industrialization and urbanization. As the evaluation elements, detailed survey contents were selected for livability, convenience, comfort, safety, economy, and sociality. Based on the survey contents, six elements were evaluated and analyzed using Data coding and Likert scale after surveying 12 complexes (Urban areas and non-urban areas) in Seoul. As a result of the study, six categories selected as the POE showed that importance of quality of life and safety was developed in high recognition according to high satisfaction with convenience and safety. Sociality showed the lowest satisfaction in the following order : livability, comfort, economy and sociality. Residents' sense of community, interaction with neighborhood, etc., showed low satisfaction, and it seems that it is necessary to improve and supplement the system for the development of mixed-use apartment complex in the future. The detailed characteristics of livability showed high satisfaction of the living room, the front door and the main room which are main uses of housing, and low satisfaction in storage size. The analysis of convenience is that convenient public transportation was the highest, and educational environment and additional facilities were the lowest, showing the advantages and disadvantages of location characteristics. As a result of the analysis of comfort, satisfaction with the landscape area was low and it seems that green space is needed for the development of mixed-use apartment complex in the future. Lastly, regarding the safety, the satisfaction of the access control, the location of security office, etc. were high, however separation of circulation was low. Therefore, it is necessary to clearly separate the circulation between the residence and other facilities in the mixed-use apartment complex.

A Study on Selecting the Sustainability Evaluation Criteria of Detached House (단독주택 건축물의 지속가능성 평가 기준 선정에 관한 연구)

  • Cho, Hong-Gyu;Shin, Jaemin;Jeong, Mingu;Jung, Gyeong-Hwan;Shin, Yoonseok;Kim, Gwang-Hee
    • Proceedings of the Korean Institute of Building Construction Conference
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    • 2013.05a
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    • pp.131-132
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    • 2013
  • The purpose of this study is to select the sustainability evaluation criteria of detached house and assess it's importance. The theoretical study is performed to select the evaluation criteria. Expert's survey and AHP(Analytic Hierarchy Process) technique are conducted to assess the importance of each factors. In a result, the four sustainability evaluation criteria was energy, economy, environment, and quality of life. Also, the energy was the most important sustainability evaluation criteria factor, while the weight of four factors showed similar weights.

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The Study on Long-Term Monitoring System of Bridge (교량의 상시감시 시스템 구축에 관한 연구)

  • 박승범;조광연;홍석주;최상필
    • Proceedings of the Korea Concrete Institute Conference
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    • 1999.04a
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    • pp.813-818
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    • 1999
  • The construction of large scale civil and building structures which form the base of social economy has been grown greatly. As the increasing of aged and deteriorated structures, it is necessary to evaluate the safety of those structures. The deterioration, safety evaluation, repair and rehabilitation are important problems in the construction area that every country faces. This paper presents the general information on how to conduct a data analysis of long-term monitoring system and evaluate the characteristics of surveying methods.

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Development of An Interim Evaluation System for Integrated Rural Village Cluster Development Project (농촌마을종합개발사업의 효율적 추진을 위한 중간평가체계 개발)

  • Kim, Kyung-Ryang;Choi, Youn-Sang;Hong, Sung-Kyu
    • Journal of Korean Society of Rural Planning
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    • v.12 no.2 s.31
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    • pp.65-73
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    • 2006
  • This study attempts to develop an interim evaluation system for the Integrated Rural Village Cluster Development Project(IRVCDP) which can secure its identity and sustainability, and induce its early settlement, and to derive plans for its steady progress. The evaluation system consists of three levels. The highest-order level is evaluation purposes, which describe IRVCDP's goals. They are expansion of income bases(EIB), improvement of living environments(ILE), strengthening of regional capabilities(SRC) and constructing effective project operation system(CEPOS). The second level is evaluation items, which each characterize the relevant evaluation purposes. The last level is evaluation indices, which observe achievement f3r evaluation purposes. 22 evaluation indices are selected to satisfy the purposes of this study through a brainstorming process and a survey on opinions of experts for those evaluation purposes and evaluation items which are derived from analyzing the IRVCDP's properties. The relative importance of the evaluation indices selected are determined through the AHP analysis. The most intriguing result from the AHP analysis is that strengthening of regional capabilities is found to be the most important one among evaluation purposes. It can be said that this result is parallel to a ultimate goal of the IRVCDP.

Fuel Economy improvement Method and Performance Evaluation Using Altitude Data (고도 데이터를 이용한 연비 향상 방안과 성능 평가)

  • Choi, Seong-Cheol;Kwon, Mann-Jun;Lee, Sang-Jun;Kim, Young-Il;Oh, Tae-Il;Ko, Kwang-Ho
    • Journal of the Korea Academia-Industrial cooperation Society
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    • v.13 no.5
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    • pp.1947-1953
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    • 2012
  • The vehicle fuel economy is very important issue in the view of global warming. This paper proposes the three fuel economy improvement algorithms which predict the velocity using altitude data of the positions in front of vehicle and estimates their performances. The proposed 3 algorithms are WMGA(Weighted Mean Gradient Angle), RAADE I, II(Reacceleration After Deacceleration I, II). This research extracts the distance and altitude data from received GPS data and calculates gradient angle and road load for each section. The velocity profile according to proposed algorithms is made for Youngdong highway of 213km. And the test vehicle runs along this highway and fuel economy is measured. RAADE II of proposed algorithms showed better performance by 3.571% in comparison to the conventional CVELCONT3.

A Study on Fuel Economy Determination of Natural Gas Vehicle Using Carbon Balance Method (탄소평형법을 적용한 천연가스 자동차의 연비 산출 방법 고찰)

  • Han, JeongOk;Chae, JungMin;Lee, DongWon
    • Journal of the Korean Institute of Gas
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    • v.21 no.6
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    • pp.1-7
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    • 2017
  • This study is aimed to investigate the US code and European code on the evaluation of fuel economy of natural gas vehicles and deduce the formula suitable for domestic natural gas fuel. The fuel consumption formula have been derived by carbon balance relation between fuel composition and exhaust emission. The US code does not limit the composition of the test gas, but European code should be used the reference gases such as G20 and G23. In the case of NGV using domestic city gas, it is confirmed that the fuel economy determined by European code is 12% worse than that of US code because of difference of test gas. Also, a method of determining the fuel properties from the calorific value is proposed to evaluate the fuel economy of natural gas vehicles.

Development of Evaluation Model in Business Incubator Using Data Mining Process (데이터마이닝을 이용한 창업보육센터의 평가모델 개발)

  • Lee, Dong-Youb;Kim, Jin-Wook
    • IE interfaces
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    • v.20 no.3
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    • pp.387-394
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    • 2007
  • Numerous countries promote business programs to revitalize local economy, increase employment, and nurture high-tech industries. Recently, a number of business incubators have been established and operated with aims to adapt to changing environment and increase economic competitiveness in Korea. To give satisfactory results of governmental policy, the requirement to develop the evaluation model to support effective operations of business incubators using the objective and rational criteria is growing. The purpose of this study is to develop evaluation model in Business Incubator using Data Mining Process. We suggested the evaluation model of business incubator, 'Score-5 RS' consists of making evaluation factor process using weighted sum and 5-grade classification and analyzing process by Decision Tree algorithm.