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스포츠 스타 인플루언서 이미지가 브랜드 충성도와 구매의도에 미치는 영향 : 팀동일시의 조절효과를 중심으로
이진균 ( Lee¸ Jinkyun ),이형민 ( Lee¸ Hyungmin ) 한국지역언론학회 2021 언론과학연구 Vol.21 No.3
본 연구의 목적은 소셜미디어상의 스포츠 스타 인플루언서 이미지를 구성하는 신뢰성, 매력성, 전문성이 브랜드 충성도와 구매의도에 어떤 영향을 미치는지 살펴보는 데 있다. 또한 본 연구는 소비자의 스포츠 팀에 대한 동일시가 스포츠 스타 인플루언서 이미지에 미치는 조절작용을 규명하기 위한 연구모형을 구축하고 실증적으로 검증하였다. 대학생 350명을 표본으로 온라인 설문을 진행하였으며, 가설검증을 위해 확인적 요인분석과 구조방정식모형을 이용한 다집단분석을 실시하였다. 연구 결과, 스포츠 스타 인플루언서 신뢰성은 브랜드 충성도에 정적 영향을 미치는 것으로 확인되었다. 또한 매력성은 브랜드 충성도와 구매의도에 각각 정적 영향을 주었으나, 전문성은 이와 같은 영향이 없었다. 한편, 브랜드 충성도는 구매의도의 유의미한 예측요인으로 밝혀졌다. 또 팀동일시 수준에 따른 전반적인 조절효과가 나타나 ‘매력성→브랜드 충성도’, ‘브랜드 충성도→구매의도’의 경로가 팀동일시의 역할에 의해 다르게 형성된다는 사실이 규명되었다. 본 연구는 스포츠 스타 인플루언서 효과와 소비자 팀동일시의 역할을 살펴봄으로써 전·현직 스포츠 스타를 활용한 마케팅 커뮤니케이션 전략 수립에 이론적·실무적 함의를 제공할 것이다. The goal of this research is to investigate the effects of sports star influencer image on brand loyalty and consumer purchase intention in SNS. Specifically, this study examines the three elements of sports star influencer image: trustworthiness, attractiveness, and expertise. Also, this study identifies how team identification moderates the relationships between sports star influencer image and brand loyalty as well as purchase intention. A total of 350 university students in South Korea participated via online survey. To test proposed hypotheses and a research question, confirmatory factor analysis, structural equation modeling, and multi-group analysis were employed. It was found that trustworthiness of sports star influencer positively affected brand loyalty. Also, attractiveness had positive influence over both brand loyalty and purchase intention. However, no significant effect of expertise was revealed. Finally, team identification showed partial moderating effect on sports star influencer image. Specifically, there were significant difference of path coefficient on ‘attractiveness → brand loyalty’ and ‘brand loyalty → purchase intention’ between low team identification group vs. high team identification group. Theoretical and practical implications as well as suggestions for future research in this area are provided.
데이터센터 냉각시스템 열복도 및 냉복도 차폐에 따른 공조성능 비교의 실험적 연구
조진균(Jinkyun Cho),최우신(Woosin Choi),장승민(Seungmin Jang),이재형(Jaehyung Lee),박치현(Chihyeon Park),이승환(Seunghwan Lee) 대한설비공학회 2021 설비공학 논문집 Vol.33 No.4
With the increased awareness of data center cooling and its energy cost impact, the hot aisle containment (HAC) system and the cold aisle containment (CAC) system are considered to be two of the most prominent techniques for IT environment control. This study investigated the thermal performance of the two systems in an experimental test, analyzing the thermal environment based on the inlet and outlet air temperature distribution according to the type of IT equipment. The filed measurements show that the HAC is more effective at cooling the IT equipment. The supply air temperature of the HAC system can be raised by 2.0℃, but the IT operation environment will be similar to that of the CAC system. The distributions of SHI and RHI of the HAC system were higher than those of the CAC system by 17.4% and 14.8%, respectively. Moreover, RTI was improved by 26.1%. This paper analyzes both systems and highlights the reasons why HAC is often the preferred solution. Even though the HAC could maintain a more stable IT environment than the CAC, the air distribution efficiency still operated imperfectly with losses in the distribution path and a mixing of hot and cold air. The development of a prototype of a fully air containment system could be a possible future development, as it could improve the two systems we tested and result in a lower risk of air recirculation and bypass.
기존 건축물의 운영단계 에너지효율 개선을 위한 관리 및 제도화 방안 연구
조진균(Cho Jinkyun),이영재(Lee Youngjae) 한국태양에너지학회 2020 한국태양에너지학회 논문집 Vol.40 No.3
Operational energy is the energy that is used during the occupancy stage of building life cycle. It is associated with relatively longer proportion of infrastructure"s service life and can constitute 80-90% of the total energy. Assessing the energy use in buildings is essential since they are significant contributors to energy demand. In this regard, energy performance of buildings has become the focus of many regulations. This paper aimed to review the regulations about the energy performance of buildings during their operational stage in Korea. For energy efficient operation program for existing buildings, governments should implement policies and support voluntary programs that rely on collecting and managing building performance data and using this data to inform public and private-sector operation and maintenance strategies. Implementing these policies and programs requires tools and processes for collecting, curating, managing, analyzing, and publishing this data. Energy assessment tool, that is a data resource management tool that enables to assess energy use across the entire portfolio of buildings, is also required.
건물의 냉, 난방 부하비율과 HVAC&R 시스템 1차 에너지 소비량의 상관관계분석 및 합리적 설계방안 연구
조진균(Jinkyun Cho),김진호(Jinho Kim),이성재(Suengjae Lee),강호석(Hosuk Kang) 대한설비공학회 2015 설비공학 논문집 Vol.27 No.3
HVAC&R systems account for more than 50% of the energy consumption of buildings. The purpose of this study is to propose an optimal design method for the HVAC&R system and to examine the possibility for the energy conservation of a selected system. The energy demand for cooling and heating is determined by using TRNSYS and HEET. By an interaction between total system efficiency and cooling-to-heating load ratio, the optimal HVAC&R systems will be decided. The results showed that this proposed method is significantly capable of determining optimal system and building design for saving energy.
용도별 에너지 요구량에 따른 대학 캠퍼스 에너지소비 구조 분석 - H 국립대학 캠퍼스 사례분석을 중심으로 -
조진균(Cho, Jinkyun),이영재(Lee, Youngjae) 대한건축학회 2021 대한건축학회논문집 Vol.37 No.6
In 2017, universities and colleges in the Korea spend an average of 218,774 toe on electricity and 125,516 toe on natural gas annually. University campus energy consumption was second-highest among the building types. Because of the higher energy consumption, energy saving planning becomes more and more important for university campus. However, insufficient energy use data accumulation has been a significant barrier against fully understanding of energy use characteristics, and demand load features of campus buildings. This study aims to develop and implement an energy audit protocol to tackle the questions of energy efficiency for education buildings. Many universities have utilized a statistical data which may not fully capture the energy flow within the individual campus buildings. With the goal of overcoming these limitations, a methodology to reveal the campus energy flow of demand load and the five standard prototypes of energy flow for university building were developed. Taking H university for example, this paper proposes systematically how to make and analyze the campus-level energy structure. As a case study, the 3-year energy data of the electricity, natural gas and geothermal usage of a H university campus were analyzed by the descriptive statistics. The energy consumption structure in H university is summarized which can provide the basis for energy saving measures. The methodology for university energy structure analysis presented in this paper can give inspiration for a more thorough energy improvement approach, either for new single buildings or as renovation road-maps for a complete university campus.
데이터센터 냉각시스템의 다양한 성능을 고려한 통합 효율평가 방법에 대한 연구
조진균(Jinkyun Cho),박병용(Beungyong Park),정용대(Yongdae Jeong),이상문(Sangmoon Lee) 대한설비공학회 2019 대한설비공학회 학술발표대회논문집 Vol.2019 No.-
Data center customers have a problem. There is no standard way to objectively evaluate the performance of a data center. To halt the ever-increasing energy consumption by data centers it is important to use performance indicators which accurately represent this performance. The strengths and limitations of PUE as the key performance indicator are analyzed and suggestions are made to complement any limitations. The data center community is becoming increasingly aware of the need to provide efficient and effective data center. However, beside the publicized PUE figures for high profile hyperscale data centers, cooling performance can not expect a data center operator realistically. The performance index required to offer a view to evaluate not just energy efficiency but the effectiveness of cooling delivery as well. However, the metrics can not indicate whether the data center performance is good or bad. This paper shows a new view of multiple metrics that beside energy efficiency evaluate facility cooling performance based on IT thermal standards during normal and redundant cooling system failure.
저온온수 모세유관 바닥복사 난방시스템의 성능에 관한 실험적 연구
조진균(Jinkyun Cho),박병용(Beungyong Park),이용준(Yongjun Lee),정원호(Wonho Chong) 대한설비공학회 2018 설비공학 논문집 Vol.30 No.2
Radiant floor heating systems with capillary tubes are energy saving systems in which hot water is circulated into capillary tube with a small diameter. In this study, the heating performance of capillary tube system is investigated in an experimental study and a simulation model. The results of the study showed that, the capillary tube radiant floor heating system maintains a more stable floor surface temperature in comparison a PB pipe system. In terms of energy consumption, the capillary tube radiant floor heating system proved to be more efficient than the PB pipe heating system at 40℃ of low temperature hot water supply. The difference between water temperature and room temperature can be held low for heating which saves energy. Low temperature radiant floor heating system with capillary tubes have significant advantages such as health improvement, low energy cost, optimum use of heat source(boiler) and higher operational efficiency.