In determining artwork prices, the identification of characteristics of the artist is crucial. While the impact of demographic profiles of artists has been examined in the literature on art pricing, the relationships among artists have been highly disregarded. In the current research, the authors focus on the measures of network centrality derived from group exhibitions in order to investigate their influence on artwork prices. The analysis results suggest that degree centrality and closeness centrality positively affect artwork prices, whereas betweenness centrality has an adverse effect. Moreover, network centrality values play a more important role in explaining artwork prices than historical reputation indexes such as gender, nationality, time elapsed after death, and main residencies of the artists. This study contributes to branding literature, while also providing art marketers with valuable insight into artist branding.

본 연구의 목적은 ‘한국 시·군·구의 네트워크 중심성 측정’이다. 이러한 연구목적의 달성을 위해 전국 229개 시·군·구 간의 중심성 크기를 ‘2015년 인구주택총조사’의 전국 229개 시·군·구의 통근통행 O-D 행렬을 이용하여 점수 형태로 측정하였다. 본 연구에서 전국 229개 시·군·구를 대상으로 중심성 점수를 측정한 것은 기존의 연구 중에는 전국 229개 시·군·구 전체를 대상으로 조사한 사례가 없기 때문이다. 본 연구에서 측정한 중심성은 세가지인데, 연결정도 중심성과 고유벡터 중심성, 그리고 연결정도 중심성과 고유벡터 중심성을 일반화시킨 보나시치 베타 중심성이 그것들이다. 본 연구에서 연결정도 중심성, 고유벡터 중심성 및 β＜ 0 인 보나시치 베타 중심성을 사용하여 전국 229개 시·군·구의 세가지 중심성을 구하고, 이 세가지 중심성의 결과값을 비교한 결과, 지역 간 상호관계는 기존 연구에서 나타난 상호보완적 관계가 아니라 상호경쟁적 관계임이 명확하게 드러났다. 특히, 지역 간 상호관계가 상호경쟁적 관계일 경우 보나시치 베타(β＜ 0) 중심성으로 측정하여야 정확성이 높은 중심성 결과값을 얻을 수 있는 것으로 나타났다.

Using network betweenness centrality we attempt to analyze the characteristics of Seoul metropolitan subway lines. Betweenness centrality highlights the importance of a node as a transfer point between any pairs of nodes. This ‘transfer’ characteristic is obviously of paramount importance in transit systems. For betweenness centrality, both traditional betweenness centrality measure and weighted betweenness centrality measure which uses monthly passenger flow amount between two stations are used. By comparing traditional and weighted betweenness centrality measures of lines characteristics of passenger flow can be identified. We also investigated factors which affect betweenness centrality. It is the number of passenger who get on or get off that significantly affects betweenness centrality measures. Through correlation analysis of the number of passenger and betweenness centrality, it is found out that Seoul metropolitan subway system is well designed in terms of regional distribution of population. Four measures are proposed which represent the passenger flow characteristics. It is shown they do not follow Power-law distribution, which means passenger flow is relatively evenly distributed among stations. It has been shown that the passenger flow characteristics of subway networks in other foreign cities such as Beijing, Boston and San Franciso do follow power-law distribution, that is, pretty much biased passenger flow traffic characteristics. In this study we have also tried to answer why passenger traffic flow of Seoul metropolitan subway network is more homogeneous compared to that of Beijing.

농가를 방문하는 가금관련업체의 관계자 및 차량은 HPAI 질병 확산의 매개체가 된다. 농가들의 가금관련업체 이용 정보를 이용하면 농가간의 연결을 확인할 수 있고 HPAI 확산 가중 네트워크를 구성할 수 있다. 네트워크 분석중 중심성 측정은 질병에 취약하거나 타 농가에 영향력이 큰 역할을 하는 농가를 분석하는 방법으로 HPAI 초기 확산을 통제하는 방법으로 이용된다. 단, HPAI 바이러스는 네트워크의 연결선 가중치에 따라서 확산 경로가 달라질 수 있다.

The aim of this study is to analyze the green-tourism centrality considering spatial interaction using Gravity Model and social network method. The degree centrality and prestige centrality were applied as green-tourism centrality index. The rural amenity resources and human resources were counted as attraction factors, and a distance among villages was used as friction factor in gravity model. The weights of rural tourism amenity resources were calculated using the analytic hierarchy process(AHP) method and applied to evaluate green-tourism potentiality. The distance was measured with the shortest path among villages using geographic information system(GIS) network analysis. The spatial interaction from gravity model were employed as link weights between nodal points; a pair villages. Using the spatial interaction, the degree-centrality and prestige-centrality indices were calculated by social network analysis and demonstrated possibility of developing integrated green-tourism region centered on high centrality villages.