http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
Consumer Associative Network Analysis on Device and Service Convergence
한상만,이장혁,박선영 한국마케팅학회 2013 ASIA MARKETING JOURNAL Vol.15 No.3
Our research brings managerial insights for developing new digital convergence of devices and services. To explain the phenomenon of device and service convergence, we combine two different approaches from separate research fields: a perceptual mapping technique generally used for segmentation in marketing and associative network analysis mobilized to understanding network structure of core and peripheral as well as the information mediating role of nodes in network science. By combining these two approaches, we provide an in-depth analysis of the associations among devices and services by assessing the centrality of device and service nodes in an associative network. This is done by examining the connections between these services and devices as well as investigating the role of mediation in the combined device-service associative network. Our results based on bi-partite network analysis of survey responses from 250 Internet Protocol (IP) television viewers show which device and which service will play the major role in future device and service convergence as well as which characteristics and functionalities have to be incorporated into future convergence. Among the devices, the mobile handset with the betweenness centrality of 0.26 appears to be the device that would lead future device convergence. Among the services, wireless broadband with the betweenness centrality of 0.276 appears to be the service on which future service convergence needs to be developed. This result is quite unexpected, since wireless broadband has a lower penetration rate than other services, such as fixed broadband and cable TV. In addition, we indicate the possibility of converging devices, such as personal digital assistant (PDA) and mobile handset, and services, such as IPTV and mobile Internet, into wireless broadband services in the future.
한상만,이지은 한국마케팅학회 2009 ASIA MARKETING JOURNAL Vol.10 No.4
Social networks can be a powerful force in marketing because they provide new ways to market to young generation. Though many studies on evaluation of customer lifetime value have been conducted, it is not clear how to assess the value of members within social networks. The purpose of this study is to evaluate members based on customer intangible value as well as customer lifetime value. Customer network value in terms of the power and influence within a network is analyzed through network structure analysis. Using Cyworld log file data, this study have shown that high percentage of members are very influential in terms of spreading or withholding information even though their CLV is low. It is expected that the findings of this research contribute to understand the interactive behaviors of members within networks and to provide valuable implications on new product launching and customer management strategies to marketers. 사회적 네트워크는 하나의 문화적 현상으로 자리매김하였다. 단절된 고객들을 위해 새로운 매체가 필요한 시대에 많은 사람들이 이러한 사회적 네트워크들이 전통적인 광고와 마케팅 툴의 강력한 대안이 될 수 있다고 믿고 있다. 본 연구는 사회적 네트워크 안에서 구성원들의 무형의 가치를 계량화함으로써 고객가치 평가에 대한 새로운 시각을 제공하고자 하였다. 고객들의 유형의 가치만을 평가하는 것은 고객들 간의 상호 연결성을 고려하지 않는 것이므로 어떤 고객들이 중요한 고객인가에 대해 부분적인 설명만이 가능하다. 따라서 고객들의 가치를 제대로 파악하기 위해서는 고객생애가치(CLV: Customer Lifetime Value)와 같은 금전적인 유형 가치뿐만 아니라 사회적 네트워크 안에서 고객들이 다른 구성원들에게 미치는 영향과 같은 무형의 가치까지를 포함하여야 한다. 본 연구에서는 고객생애가치라는 금전적인 가치와 네트워크 내에서 한 고객이 얼마나 중요한가를 나타내는 무형의 가치에 근거하여 고객을 평가할 수 있는 프레임웍을 제시하였다. 고객무형가치 즉 고객들의 네트워크 가치를 측정하기 위해 사회학의 기존 연구에 기초한 중심성(Centrality)지표를 활용하였다. 중심성(Centrality) 지표들을 통해 고객무형가치에 대한 금전적 가치까지 계산하기는 어렵지만 낮은 고객생애가치를 가지면서 높은 무형가치를 가지고 있는 고객 혹은 반대 경우의 고객들을 파악할 수 있다. 낮은 고객생애가치를 가진 고객들에게 기업이 많은 자원을 할당해서는 안 된다고 제안하고 있는 전통적인 고객생애가치 모델과는 달리, 이러한 양 방향적 가치접근은 고객생애가치는 낮을지라도 높은 네트워크 가치를 가지고 있다면 기업에게 중요할 수 있는 고객임을 제안하고 있다.
공분산 기반 수중 ultra-short baseline 시스템의 위치 추정 성능 개선 기법
한상만,차민혁,고학림,이호준 한국음향학회 2024 韓國音響學會誌 Vol.43 No.1
Since Ultra-Short BaseLine (USBL) uses an array with narrow sensor spacing, precise synchronization is required to improve source localization performances. However, in the underwater environment, synchronization errors occur due to relatively strong noise and underwater acoustic channels such as multipath and Doppler, which deteriorates the source localization performances. This paper proposes a covariance-based synchronization compensation method to improve the source localization performances of the underwater USBL systems. The proposed method arranges the received signals through cross-correlation and calculates the covariance of the arranged signals. The synchronization error is related to the phase difference in the covariance. Thus, the phase difference is estimated as the covariance and compensated. Computer simulations demonstrate that the proposed method has better source localization performances than the conventional cross-correlation method.