nep-net New Economics Papers
on Network Economics
Issue of 2007‒09‒30
five papers chosen by
Yi-Nung Yang
Chung Yuan Christian University

  1. The Control of Porting in Two-Sided Markets By Pollock, Rufus
  2. Behaviour in Networks of Collaborators: Theory and Evidence from the English Judiciary By Jordi Blanes i Vidal; Clare Leaver
  3. Patents and Antitrust: Application to Adjacent Markets By Nicholas Economides
  4. Nonbanks in the Payments System: Vertical Integration Issues By Nicholas Economides
  5. Modeling the Growth of Transportation Networks: A comprehensive review By Feng Xie; David Levinson

  1. By: Pollock, Rufus
    Abstract: A sizable literature has grown up in recent years focusing on two-sided markets in which economies of scale combined with complementarities between a platform and its associated `software' or `services' can generate indirect network effects (that is positive feedback between the number of consumers using that platform and the utility of an individual consumer). In this paper we introduce a model of `porting' in such markets where porting denotes the conversion of `software' or `services' developed for one platform to run on another. Focusing on the case where a dominant platform exists we investigate the impact on equilibrium and the consequences for welfare of the ability to control porting. Specifically, we show that the welfare costs associated with the `control of porting' may be more significant than those arising from pricing alone. This model and its associated results are of particular relevance because of the light they shed on debates about the motivations and effects of actions by a dominant platform owner. Recent examples of such debates include those about Microsoft's behaviour both in relation to its operating system and its media player, Apple's behaviour in relation to its DRM and iTunes platform, and Ebay's use of the cyber-trespass doctrine to prevent access to its site.
    Keywords: Network Effects; Two-Sided Markets; Porting; Antitrust; Competition
    JEL: L13 L15 L12
    Date: 2005–07
  2. By: Jordi Blanes i Vidal; Clare Leaver
    Abstract: This paper uses data on judicial citations to explore whether the diffusion and/or application of knowledge within an organisation is affected by worker connectivity. Developing a simple model of discretionary citations, we distinguish between two hypotheses: knowledge diffusion whereby connected judges are more likely to be aware of each others` cases than unconnected judges, and socialisation whereby judges are more likely to be positively disposed to judges to whom they are more connected. Our empirical strategy exploits three important institutional features: (a) the random allocation of judges to case committees in the English Court of Appeal, (b) the existence of both positive and neutral citations and (c) the fact that connections occur over time. We are able to reject the knowledge diffusion hypothesis in its simplest form. We are unable to reject the socialisation hypothesis, and find strong evidence to support it. The paper concludes with a discussion of implications for other knowledge-based organisations.
    Keywords: Networks, Public Sector Organizations, Judicial Citations
    JEL: H1 K4 Z13
    Date: 2007
  3. By: Nicholas Economides
    Date: 2007
  4. By: Nicholas Economides
    Date: 2007
  5. By: Feng Xie; David Levinson (Nexus (Networks, Economics, and Urban Systems) Research Group, Department of Civil Engineering, University of Minnesota)
    Abstract: This paper reviews the progress that has been made over the last
    Keywords: Network growth, Transport economics, Incremental connection
    JEL: R41 R42 R48 O33
    Date: 2007

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