Arrow’s celebrated theorem shows that the aggregation of individuals’ preferences into a social ordering cannot make the ranking of any pair of alternatives depend only on individuals’ preferences over that pair, unless the fundamental Pareto and non-dictatorship principles are violated. In a unified approach covering the theory of social choice and the theory of fair allocation, we investigate...

Most conservation and development initiatives assume that rules limiting resource extraction are necessary for ecological sustainability. While this is often true, in some social–ecological systems, unpredictable ecosystem dynamics limited exploitation technology make it unlikely people will overstep the threshold, precluding need management rules. Here, two kinds of systems can emerge: open ac...

We introduce the concept of group manipulation into the study of judgment aggregation and investigate the circumstances under which an aggregation rule may be subject to strategic misrepresentation of judgments by a group of agents. Our focus is on neutral aggregation rules, which treat all propositions to be judged symmetrically, and we assume that agents strategise to minimise the number of p...

Generalizing the celebrated “discursive dilemma,” we analyze judgement aggregation problems in which a group of agents independently votes on a set of complex propositions (the “conclusions”) and on a set of “premises” by which the conclusions are truth-functionally determined. We show that for conclusionand premise-based aggregation rules to be mutually consistent, the aggregation must always ...

Decision support systems are mainly based on multidimensional modeling. Using On-Line Analytical Processing (OLAP) tools, decision makers navigate through and analyze multidimensional data. Typically, users need to analyze data at different aggregation levels, using OLAP operators such as roll-up and drill-down. Roll-up operators decrease the details of the measure, aggregating it along the dim...

This study investigates an axiomatic approach to in-kind assignment problems with a single-unit demand such as triage. We consider multiple ethical criteria regarding which agents should be assigned that conflict one another. To make compromises between criteria, we introduce two methods for configuring social choice rules map from various who are slots: the method of procedure and aggregation....

The key feature of online social networks (OSN) is the ability of users to become active, make friends and interact via comments, videos or messages with those around them. This social interaction is typically perceived as critical to the proper functioning of these platforms; therefore, a significant share of OSN research in the recent past has investigated the characteristics and importance o...

language must be studied as a social behavior and the aim of language instruction must be to facilitate learners’ acquisition of communicative competence; the ability to speak both accurately and appropriately. rules of speaking must be included into second language classroom teaching. we should teach linguistic rules along with social rules. in this study a number of social functions in persia...

Which rules for aggregating judgments on logically connected propositions are manipulable and which not? In this paper, we introduce a preference-free concept of non-manipulability and contrast it with a preference-theoretic concept of strategy-proofness. We characterize all non-manipulable and all strategy-proof judgment aggregation rules and prove an impossibility theorem similar to the Gibba...