Multivariate geometric expectiles

A generalization of expectiles for d-dimensional multivariate distribution functions is introduced. The resulting geometric expectiles are unique solutions to a convex risk minimization problem and are given by d-dimensional vectors. They are well behaved under common data transformations and the corresponding sample version is shown to be a consistent estimator. We exemplify their usage as risk measures in a number of multivariate settings, highlighting the influence of varying margins and dependence structures.     

Uncovering Micro‐Practices and Pathways of Engagement That Scale Up Social‐Driven Collaborations: A Practice View of Power

This paper explores how large‐scale social‐driven collaborations might grow in scale and help promote political change. We present the results of a qualitative investigation of a complex platform where multiple and hybrid collaborations co‐exist and where civil society plays a central role. Based on a longitudinal comparative case study, we draw a processual model describing micro‐practices and pathways of engagement. We show that the emergence of these collaborations requires a new type of convener, one that is able to manage the interplay between the sharing/co‐creation of abundant resources and the coordinated decentralization of informal authority. Our study extends existing debates on the role of resources and authority, showing the complementarity between possession and practice perspectives of power. Finally, we identified synergies between collaboration and social movement literatures, particularly showing that large‐scale collaborations could be mobilized to refine social movement agendas and achieve more purposive collective action.     

The commercialization of academic outputs in the administrative sciences: A multiple‐case study in a university‐based business school

Technology transfer, and its focus on research commercialization, is gaining popularity in all academic fields as a way to better demonstrate universities' external impacts. We conducted a multiple case‐study of three commercialization projects in Organizational Development, Information Technology, and Marketing, which took place in a university business school. We explored to what extent the technology transfer model of commercializing academic outputs could apply in business schools. We also examined its potential value compared to other ways of sharing academic expertise. Although the technology transfer approach appears to work, the three projects exhibited crucial characteristics that markedly differ from traditional technology transfer. Compared to other forms of knowledge uses, what makes research commercialization so attractive is that it is readily observable and traceable. However, it raises some fundamental questions about knowledge production and its use. Copyright © 2015 ASAC. Published by John Wiley & Sons, Ltd.     

Chores

We analyze situations where the provision of each of c public goods must be voluntarily assumed by exactly one of n private agents in the absence of transfer schemes or binding contracts. We model this problem as a complete information, potentially infinite horizon game where n agents simultaneously wage c wars of attrition. Providing a public good commits an agent not to take on the provision of another public good for a fixed period. We explore the strategic trade-offs that this commitment ability and the multiplicity of tasks provide. Subgame perfect equilibria (SPEs) are characterized completely for games with two agents and two public goods. For games with two identical agents and c > 1 identical public goods, we establish that an equilibrium that yields a surplus-maximizing outcome always exists and we provide sufficient conditions under which it is the unique equilibrium outcome. We show that under mild conditions, the surplus-maximizing SPE is the unique symmetric SPE. Journal of Economic Literature Classification Number: H41, C72, D13.