nep-net New Economics Papers
on Network Economics
Issue of 2006‒05‒20
five papers chosen by
Yi-Nung Yang
Chung Yuan Christian University

  1. Matching and Network Effects By Sanjeev Goyal; Marcel Fafchamps; Marco J. van der Leij
  2. Network Cooperation and incentives within online communities By Godefroy DangNguyen (ENST-B); Thierry Pénard (CREM-CNRS)
  3. "The Social Capital of Regional Dynamics: A Policy Perspective" By Hans Westlund
  4. Regulation in telecommunications : a cross approach between law and economics By Thierry Pénard (CREM-CNRS); Nicolas Thirion (University of Liege)
  5. Product Quality in Scientific Competition By Max Albert

  1. By: Sanjeev Goyal; Marcel Fafchamps; Marco J. van der Leij
    Abstract: This paper examines the existence and magnitude of network effects in the matching of workteams. We study the formation of co-author relations among economists over a thirty year period. Our principal finding is that a collaboration emerges faster among two authors if they are closer in the social network of economists. This proximity effect on collaboration is strong and robust but only affects initial collaboration. It has no positive influence on subsequent co-authorship. We also provide some evidence that matching depends on experience, junior authors being more likely to collaborate with senior authors.
    Date: 2006–05–11
  2. By: Godefroy DangNguyen (ENST-B); Thierry Pénard (CREM-CNRS)
    Abstract: The aim of this paper is to understand the rationale of cooperation within online sharing communities. How can we explain the extent of cooperative interactions between anonymous distant Internet users ? We build a game theoretic framework to study the exchange of services within virtual community like in a peer-to-peer network. We show that the coexistence of contributors and free-riders is often a stable situation. We also examine the optimal incentive mechanisms to stimulate contributions by community members.
    Keywords: Online communities, Internet,free riding
    Date: 2006
  3. By: Hans Westlund (National Institute for Working Life)
    Abstract: This paper deals with social capital as an extra-market externality, and its role for innovations and growth. It analyses the changes of innovation activity over time, from early industrialism to the global knowledge economy, how the relations between the actors of today's innovation systems have developed and the role of social networks for innovations. The different kinds of networks built by the three constructers of social networks: the individual, the organizations and the (public and civic) society are discussed. The role of public policy in building social capital for innovations and growth is analyzed.
    Date: 2006–05
  4. By: Thierry Pénard (CREM-CNRS); Nicolas Thirion (University of Liege)
    Abstract: Regulation in telecommunication industry is one of the most sophisticated sectorial regulation. Two main goals are targeted by public authorities. In one hand, the regulator is trying to build a competitive market to replace the historic monopolistic situation. Now the emphasis is less on the monopolization of the market by the former public operator and more on the risk of collective dominance by a dew dominant operators. In the second hand, the regulator is trying to promote other objectives such as protection of consumers, the territory balance, the defence of national champions. All these objectives can sometimes be in conflict. This paper analyses regulatory objectives and instruments, focusing on the economic and lax aspects.
    Keywords: Internet, Regulation, Law
    Date: 2006
  5. By: Max Albert
    Abstract: The paper presents a linear model of product quality in scientific competition. The only outputs of research are published papers; the only inputs are labor and papers by other researchers, which are cited when used. Researchers compete for status, measured as their rank in a citations count. If quality is hereditary in the production process, competition and self-fulfilling expectations can establish a quality scale.
    Keywords: citations, competition, norms, quality, science
    JEL: L3 O3
    Date: 2006–05

This nep-net issue is ©2006 by Yi-Nung Yang. It is provided as is without any express or implied warranty. It may be freely redistributed in whole or in part for any purpose. If distributed in part, please include this notice.
General information on the NEP project can be found at For comments please write to the director of NEP, Marco Novarese at <>. Put “NEP” in the subject, otherwise your mail may be rejected.
NEP’s infrastructure is sponsored by the School of Economics and Finance of Massey University in New Zealand.