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      • A Data Placement Algorithm for Data Intensive Applications in Cloud

        Qing Zhao,Congcong Xiong,Kunyu Zhang,Yang Yue,Jucheng Yang 보안공학연구지원센터 2016 International Journal of Grid and Distributed Comp Vol.9 No.2

        Data layout is an important issue which aims at reducing data movements among data centers to improve the efficiency of the entire cloud system. This paper proposes a data-intensive application oriented data layout algorithm. It is based on hierarchical data correlation clustering and the PSO algorithm. The datasets with fixed location have been considered, and both the offline strategy and the online strategy for data layout have been given. As this proposed strategy is aimed at reducing the global amount of data transmissions, and the special permission of the datasets has been introduced, the cost of data transmission can be measured more reasonable. Simulation results show that compared with two classical strategies, our algorithm can reduce the amount of data transmission more effectively.

      • Subsurface Channel Detection Using Color Blending of Seismic Attribute Volumes

        Jianhua Cao,Yang Yue,Kunyu Zhang,Jucheng Yang,Xiankun Zhang 보안공학연구지원센터 2015 International Journal of Signal Processing, Image Vol.8 No.12

        Color is the critical factor in seismic data interpretation and geological targets visualization. And recently, ideas of color blending have brought the enlightenment in attribute combinations for reservoir characterization in petroleum engineering. In this paper, we present this approach of color blending in different color modes and its application in subsurface channel detection by using seismic attributes data. The color models include RGB model, CMY model and HSV model. We firstly calculate sensitive attributes from three dimensional seismic data, including envelop, coherence and spectral decomposition, etc. Then three types of normalized seismic attributes are set as input into the primary color channel of the color models respectively, and then mixed together to create one color blended volume in three dimensional visualization environment. The blended volume has plenty of geological information coming from the three input attributes, resulting in better resolution for channels than the single attribute. Applications in one survey of DQ oilfield show that channels are vividly imaged with special lighted color on the blended volume slices. The spatial distribution characteristics of channels, including the shapes and branches, are clearly depicted. And for the three blending methods, the RGB model is mostly preferred although the CMY model has almost similar performances in channel detection, while HSV model is slightly inferior in this case.

      • KCI등재

        인플루언서 특성이 소비자 반응에 미치는 영향 : 정보 신뢰성의 매개효과를 중심으로

        김혜진(Hyejin Kim),마지나(TASHMAGAMBETOVA MADINA),장곤우(ZHANG KUNYU),배병렬(Byungryul Bae) 대한경영학회 2022 大韓經營學會誌 Vol.35 No.1

        본 연구는 SNS를 사용하고 있는 일반 소비자를 대상으로 인플루언서의 특성이 정보 신뢰성을 매개로 소비자 반응에 미치는 영향을 살펴보았다. 여기에서 인플루언서의 특성을 전문성, 매력성, 진실성 3가지의 요인으로 구성하였으며, 각각의 특성이 정보 신뢰성, 브랜드 태도, 구매의도 간의 직접적 관계를 알아보고, 특성과 소비자 반응 간의 관계에서 정보 신뢰성의 매개 역할을 검증하였다. 분석 결과를 요약하면 첫째, 인플루언서의 특성인 전문성과 진실성은 정보 신뢰성에 긍정적인(+) 영향을 미치는 것으로 나타났으며, 진실성은 브랜드 태도와 구매의도에 긍정적인(+) 영향을 미치는 것으로 나타났다. 또한 정보 신뢰성 역시 브랜드 태도와 구매의도에 긍정적인(+) 영향을 미치는 것으로 나타났다. 둘째, 정보 신뢰성에 대한 소비자 반응의 매개효과를 검증한 결과 전문성, 진실성과 브랜드 태도, 구매의도 간의 관계에서 정보의 신뢰성이 매개 역할을 하는 것으로 나타났다. 따라서 인플루언서를 광고모델로 고려하고 있는 기업들은 인플루언서의 전문성과 진실성을 토대로 정보의 신뢰성을 높일 수 있는 전략이 수립되어야 하고, 인플루언서 개인 또한 겉으로 보이는 매력성보다는 전문성과 진실성을 높이는 방안을 생각해야 한다. The numbers of social media network users are increasing steadily, and with it popularity of social media influencers. In marketing, influencers play important role as a public relation (PR) and advertising instrument. To advance understanding of how different types of influencer characteristics impact consumer responses through information credibility, this article conducted an empirical study in SmartPLS using data from social media user consumers. Influencer characteristic was composed of three dimensions: expertise, attractiveness, trustworthiness. This article examines the direct effect of each three characteristic dimensions on information credibility, brand attitude and purchase intention. In addition, this article examines how information credibility mediates the relationship between influencer characteristics and consumer outcome. This study shows following findings. Firstly, influencer’s expertise and trustworthiness has a positive effect on information credibility. Furthermore, trustworthiness and information credibility has a positive effect on consumer responses. Secondly, the findings from this study support mediating role of information credibility among expertise, trustworthiness and brand attitude, purchase intention. Therefore, companies considering influencers as an advertising model should develop strategies to increase information credibility based on influencer’s expertise and trustworthiness, also influencer should consider increasing their expertise and trustworthiness rather than attractiveness.

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