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on Network Economics |
| By: | BISMUT, Sophie |
| Abstract: | In recent years, the European telecommunications market has witnessed major developments, with rapid expansion in access to telecommunications networks and a surge in the number of available services and applications. While many factors have contributed to the transformation of the telecommunications industry, competition has played a key role in driving telecom players to invest in new technologies, to innovate and to offer new services. Increased competitive pressure is being felt across all market segments, even though significant differences remain across services and countries. Broadband roll-out has allowed operators to offer multiple-play services, thereby transforming traditional segment boundaries and competitive market structures. |
| Keywords: | competition; access; convergence; multiple-play; fixed telephony; mobile services; broadband; VoIP; MVNO. |
| JEL: | L51 L40 L50 L41 K23 L96 L33 L94 |
| Date: | 2006–12 |
| URL: | http://d.repec.org/n?u=RePEc:pra:mprapa:3567&r=net |
| By: | Sören Preibusch; Bettina Hoser; Seda Gürses; Bettina Berendt |
| Abstract: | Privacy has been recognized as an important topic in the Internet for a long time, and technological developments in the area of privacy tools are ongoing. However, their focus was mainly on the individual. With the proliferation of social network sites, it has become more evident that the problem of privacy is not bounded by the perimeters of individuals but also by the privacy needs of their social networks. The objective of this paper is to contribute to the discussion about privacy in social network sites, a topic which we consider to be severely under-researched. We propose a framework for analyzing privacy requirements and for analyzing privacy-related data. We outline a combination of requirements analysis, conflict-resolution techniques, and a P3P extension that can contribute to privacy within such sites. |
| Keywords: | World Wide Web, privacy, social network analysis, requirements analysis, privacy negotiation, ubiquity, P3P |
| JEL: | C8 L86 |
| Date: | 2007 |
| URL: | http://d.repec.org/n?u=RePEc:diw:diwwpp:dp698&r=net |
| By: | Javier Rivas |
| Abstract: | We model the formation of friendships as repeated cooperation within a set of heterogeneous players. The model builds around three of the most important facts about friendship: friends help each other, there is reciprocity in the relationship and people usually have few friends. In our results we explain how similarity between people affects the friendship selection. We also characterize when the friendship network won’t depend on the random process by which people meet each other. Finally, we explore how players’ patience influences the length of their friendship relations. Our results match and explain empirical evidence reported in social studies on friendship. For instance, our model explains why troublesome subjects have few friends. |
| Keywords: | Friendship, cooperative game, grim trigger strategy, social networks |
| JEL: | C72 C73 Z13 |
| Date: | 2007 |
| URL: | http://d.repec.org/n?u=RePEc:eui:euiwps:eco2007/08&r=net |
| By: | Francesco Feri |
| Abstract: | This paper considers a model of economic network characterized by an endogenous architecture and frictions in the relations among agents as described in Bala and Goyal (2000). We propose a similar network model with the difference that frictions in the relations among agents are endogenous. Frictions are modeled as dependent on the result of a coordination game, played by every pair of directly linked agents and characterized by 2 equilibria: one efficient and the other risk dominant. The model has a multiplicity of equilibria and we produce a characterization of those are stochastically stable. |
| Keywords: | Network, Decay, Strategic Interaction |
| JEL: | A14 D20 J00 |
| Date: | 2007–06 |
| URL: | http://d.repec.org/n?u=RePEc:inn:wpaper:2007-14&r=net |
| By: | Gachino, Geoffrey (UNU-MERIT) |
| Abstract: | This paper undertakes a critical review of existing spillover analyses and proposes a unique analytical framework for examining technological spillovers in a manufacturing industry setting. The proposed framework overlaps three different literature strands; cluster and network dynamics, technological innovations; and spillover literature. It enables determination of the extent to which multinational presence in a host country stimulates spillover occurrence to local firms as well as their nature. Using this framework, the kind and the channels through which spillovers occur most can be equally determined - this is particularly relevant for policy intervention in a technically backward country. Lastly, it allows determination of factors and conditions under which spillovers from multinationals occur. |
| Keywords: | International Economic Relations, Technology Transfer, Learning, Network Dynamics, Capability Building, Technological Change, Multinational Enterprises |
| JEL: | O33 F23 D83 D85 O31 |
| Date: | 2007 |
| URL: | http://d.repec.org/n?u=RePEc:dgr:unumer:2007017&r=net |