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    Topics on social and economic networks

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    Laan, G. van der [Promotor]Lindner, I.D. [Copromotor]Koster, M.A.L. [Copromotor

    Going Beyond Counting First Authors in Author Co-citation Analysis

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    The present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed

    Multi-Service Serial Cost Sharing: An Incompatibility with Smoothness

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    We focus on the radial serial rule as a natural extension of the Moulin-Shenker cost sharing rule. We show that it is the unique regular rule that is compatible with the radial serial principle. In particular this shows the incompatability of the serial prionciple with differentiability of a cost sharing rule as a function of the individual demands.Cost-sharing;serial rule;multi-service facilities

    Cost sharing in production situations and network exploitation

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    In many real-life situations where individuals work together in a joint project, joint costs (or profits) occur which have to be shared. The central problem of cost sharing is the allocation of costs in a 'just' way among the participants. Examples are numerous and range from setting fees for the use of a common facility such as (tele)communication networks, water supply systems, power plants, airports and transit systems, to the allocation of joint overhead costs of a firm among its divisions. It is the central issue of this monograph to address the problem of sharing the cost of a particular technology by a group of agents with equal access rights and unequal demands, in the presence of variable returns. Inspired by ideas from game theory and the (axiomatic) literature on distributive justice, this thesis considers solution concepts for homogeneous and heterogeneous cost sharing problems. The first part of the thesis discusses (continuous) cooperative production problems, whereas the second part is devoted to (discrete) cost sharing problems involved with network exploitation

    Multi-Service Serial Cost Sharing: A Characterization of the Moulin-Shenker Rule

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    We focus on the Moulin-Shenker cost sharing rule as a natural extension of the serial rule to multi-service facilities where services are personalized. We show that it is the unique regular rule that is compatible with scale invariance and self consistency

    Heterogenous Cost Sharing, the Directional Serial Rule

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    The directional serial rule is introduced as a natural serial extension, generalizing the Moulin-Shenker cost sharing rule to heterogeneous cost sharing models. It is the unique regular rule compatible with the radial serial principle. In particular, this shows the incompatibility of the serial principle with differentiability of a cost sharing rule as a function of the individual demands
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