Cette thèse se présente sous la forme d’un volume de 134 pages composé de 5 articles de recherche. La thèse est une contribution empirique à la littérature qui s’est développée depuis le début des années 2000 sur les bouleversements introduits par Internet sur le commerce des biens culturels. Elle examine plus particulièrement un ensemble de questions portant sur la complémentarité ou la substitution des canaux de distribution, physiques et virtuels, l’effet de « Longue Traîne » et la dispersion des prix sur Internet. L’intérêt de la thèse est d’apporter des éléments de preuve empiriques à ces débats, grâce notamment à la création de bases de données obtenues par captation automatisée de données observables sur Internet. Les résultats statistiques et économétriques issus de ces travaux détaillent les spécificités des meilleures ventes de Livres, CD et DVD selon les canaux de distribution (Amazon, Marketplace d’Amazon, magasins physiques) mais aussi selon leur format (livres papiers/ livres numériques). D’autre part, les résultats montrent une faible variabilité des prix par les vendeurs d’Amazon Marketplace ainsi qu’un faible impact des mesures traditionnelles de la réputation (notations des vendeurs) par rapport à la taille du catalogue des vendeurs remettant en question l’utilisation de la notation comme proxy de la réputation. / This thesis is a volume of 134 pages and includes 5 research articles. The thesis is a contribution to the empirical literature that has developed since the early 2000s on the changes introduced by the Internet trade in cultural property. It examines in particular a set of questions on the complementarity or substitution distribution channels, physical and virtual, the effect of the "Long Tail Theory" and price dispersion on the Internet. The interest of this thesis is to provide empirical evidence to the debate, thanks to the creation of databases obtained by automated data capture observable on the Internet. Statistical and econometric results from these studies detail the specifics of best-selling books, CDs and DVDs as distribution channels (Amazon, Amazon Marketplace, physical stores) but also according to their format (paper books / ebooks). Regarding price dispersion, the results show a low variability of prices by sellers of Amazon Marketplace and low impact of traditional measures of reputation (ratings of sellers) compared to the size of the catalog vendors challenging the using of notation as a proxy for reputation.

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The thesis examines impact of online user reviews, expressed in 5-star rating system, on demand for PC and video games. Used weekly data are collected from www.amazon.co.uk for period 2000 - 2012. The thesis contributes to discussion which takes place between supporters of superstar theory and supporters of long tail theory. Panel structure of the dataset referred to application of fixed effects model for estimation of basic and extended model. Both estimates proved negative influence of assigned number of stars on sales rank. Basic model estimated influence of one unit change of stars on rank by 9 positions, extended model estimated this change to be 10 positions. Quantile estimate also proved negative influence of stars on sales rank. The influence is strongest for the lowest quantile of dependent variable (tau = 0,05) representing 5 % best-selling titles, where one unit change of stars causes change of 35 positions in opposite direction. With increasing quantiles this influence decreases to zero. It proves that within the market for PC and video games online user reviews contribute to superstar effect.

在數位出版產業中，台灣出版業者面對網路改革的壓力，積極尋找網路數位出版發展趨勢與商業模式，並且華文網路市場機會的興起以及網路社會上智慧財產權的日益重要，本研究將以智慧財產權管理的角度探討在網路中，臺灣出版業者如何尋找新的商業模式掌握此次出版業的革命商機，為廠商提出發展建議。 網路數位出版，意指在內容出版的過程，從內容創造、流通到利用都是以數位化的技術進行，並且在網路的環境中完成這些過程。網路數位出版平台，指的是溝通內容創造與內容利用兩端的中間者。負責聯絡兩方平台業者所面對的智財權議題以著作權最為重要，因為數位出版產業立基於內容發展，而著作權主要說明內容的管理。 本研究從網路長尾理論出發，以該現象形成的原因作為分析廠商的智財權管理的面向，分析專業數位出版平台—商業周刊網站，以及業餘數位出版平台—PIXNET，尋找商業模式與智財權管理的關連性。 根據個案訪談的結果分析，專業數位出版平台內容發行與智財權管理皆為以業者角度為主的單向，然而業餘數位出版平台的內容發行與智財權管理都是以互動的方式完成，平台之商業模式確實影響智財權的管理。除此之外，對於未來數位出版平台的發展，專業與業餘之間的藩籬逐漸消弭，成為兩者的綜合，本研究亦建議業者朝向專業與業餘並行的發展方向前進。 / The importance of intellectual property increases with the growth of Chinese internet market. Taiwan publishers are now confronted with the pressure from internet innovation and thus are forced to find out a new business model and more opportunity. This study will focus on the possible business model of digital publishing and the strategy of IP management which Taiwan publishers should adopt. Digital publishing suggests an all-digitalized publication process. Every step of publication, from content creation, editing, publishing, selling to application, can be completed all through the internet. The platform of digital publishing serves to communicate both side of content providers and users. Hence, copyright of the digital content and the management of copyright becomes one of the most important intellectual property issues. The thesis will begin with Chris Anderson’s Long Tail theory. Two websites of digital publishing in Taiwan will be chosen for analysis: the Business Weekly as the commercial plaform and PIXNET Blog as the avocational one. Through the comparison, the study aims to find out the connections between the business model and the intellectual property management. According to the case studies, the content and the intellectual property management of commercial platform are unidirectional, decided by managers. On the other hand, tthese of avocational one are bidirectional, influenced by website managers and users. Intellectual property managements are influenced by different business model. However, it would be the trend that the barrier between commercial platform and the avocational one will melt away and the business model of website in the future will change. The business model and intellectual property management of digital publishing platform should combine characteristics of both commercial and avocational one.