101,885 research outputs found
Meetings with costly participation: a comment
No full textIn a recent paper Osborne, Rosenthal and Turner (2000) investigate a model of meetings with costly participation. Their main result is that the equilibrium number of participants is small and their positions are extreme. In particular, when the policy space is one-dimensional and the policy outcome is the median of participants' positions, they conclude that the number of attendees is even. The proof is flawed. We construct an example with an odd number of attendees. Oddness of the number of participants has a dramatic consequence on how equilibria look like
On the generic strategic stability of Nash equilibria if voting is costly
No full textWe prove that for generic plurality games with positive cost of voting, the number of Nash equilibria is finite. Furthermore all the equilibria are regular, hence stable sets as singletons...................................................................................................................................................................................................................
A spatial voting model where proportional rule leads to two-party equilibria
No full textIn this paper we show that in a simple spatial model where the government is chosen under strict proportional rule, if the outcome function is a linear combination of parties' positions, with coefficient equal to their shares of votes, essentially only a two-party equilibrium exists. The two parties taking a positive number of votes are the two extremist ones. Applications of this result include an extension of the well-known Alesina and Rosenthal model of divided government as well as a modified version of Besley and Coate's model of representative democracy
Moderating government
No full textWe consider a model where policy motivated citizens vote in two simultaneous elections, one for the President who is elected by majority rule, in a single national district, and one for the Congressmen, each of whom is elected by majority rule in a local district. The policy to be implemented depends not only on who is elected President but also on the composition of the Congress. We characterize the equilibria of the model using a conditional sincerity concept that takes into account the possibility that some voters may be simultaneously decisive in both elections. Such a concept emerges naturally in a model with trembles. A crucial feature of the solution is the moderation of Government. Our results are robust to several modifications of the model
Considerazioni riguardanti la stabilità delle “whirling flames” di origine incidentale, con il supporto della sperimentazione e della termofluidodinamica computazionale
No full textThe effect of ideology in proportional representation systems
No full textIn this paper we propose a model in which there are ideological and strategic voters who vote under proportional rule. We prove that the behavior of ideological voters matters for the determination of the outcome. We show that a subset of strategic voters partially counteracts the votes of the ideological voters
Electing a Parliament
No full textWe present a model where a society elects candidates belonging to two
parties to a national parliament. The electoral rule determines the seats distribution
between the two parties. The policy outcome is a function of the number of seats the
two parties win in the election. We analyze two electoral rules, multidistrict majority
and single district proportional. We prove that under both systems there is a unique
pure strategy perfect equilibrium outcome. We compare the outcomes under the two
systems
PROGRESS ON WATER MIST EVAPORATION MODEL BASED ON EULERIAN SPRAY DESCRIPTION
No full textABSTRACT
Water mist fire protection strategies applied to road and subway tunnels are arousing considerable interest in recent years because of their high potential in fire control and suppression. The influence of ventilation can reduce or enhance the residence time of droplets influencing their global evaporation rate and affecting smoke propagation. This paper describes our effort to provide a numerical model based on the Eulerian Spray description to support the lack of expensive experiments at design stage, allowing parametric studies to compare different solutions, with strong simplifications in order to reduce the computational costs. PDA technique is used to characterize the industrial nozzle object of this study and to obtain an estimation of input values. Measurements show that, at least for some kind of nozzle, a monodispersed distribution should be reasonable to reconstruct well the flow field, preventing the need for a complete multi-fluid treatment
Stabilità delle Whirling flames – Sperimentazioni e termo fluidodinamica computazionale
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