1,093 research outputs found
Microscopic Deterministic Dynamics and Persistence Exponent
Numerically we solve the microscopic deterministic equations of motion with
random initial states for the two-dimensional theory. Scaling behavior
of the persistence probability at criticality is systematically investigated
and the persistence exponent is estimated.Comment: to appear in Mod. Phys. Lett.
Extreme Right and Populism: A Frame Analysis of Extreme Right Wing Discourses in Italy and Germany. IHS Political Science Series No. 121, July 2010
This paper addresses the interactions between the extreme right and populism, looking at right wing discourses in Italy and Germany, focusing on different types of extreme right organizations (political parties, violent subcultural/young right wing groups, and political movements), and adopting a social movement perspective. Through a frame analysis conducted on several types of organizational documents (newspapers, websites, online guest books and forums, and other forms of publications), covering a period from 2000-2006, for a total of 4000 frames, it explores empirically the aspect of the conceptualization of the populism by the extreme right, showing the bridging of the appeal to the people with some traditional frames of the extreme right, such as nativism and authoritarianism, and stressing how the central populist frames (the people versus the elite) are linked to the extreme right definition of the 'us' and the 'them', when developing diagnoses, prognoses and motivations to action. A political opportunity and discursive approach will be useful in explaining the different configurations of populist frames depending on country and organizational type
Phase Ordering Dynamics of Theory with Hamiltonian Equations of Motion
Phase ordering dynamics of the (2+1)- and (3+1)-dimensional theory
with Hamiltonian equations of motion is investigated numerically. Dynamic
scaling is confirmed. The dynamic exponent is different from that of the
Ising model with dynamics of model A, while the exponent is the same.Comment: to appear in Int. J. Mod. Phys.
An Agent-Based Model of Schumpeterian Competition
The paper presents an Agent-Based extension of Nelson-Winter model of schumpeterian competition. The original version did not provide any insight about the direction of firms innovative activities and of technological change as a whole. As a result, it lacked an explicit structure governing firms interaction and the shape of externalities. We address these criticisms by taking explicitly into account the structure of technology in use in the industry, that we shape as a directed network of nodes and links: nodes represent technological skills to be learnt by firms looking for new combinations and links represent their reciprocal interdependencies. The network is created in order to reflect the defining properties of Technological Paradigms and Technological Trajectories, as they emerge by evolutive-neoschumpeterian literature. Firms ability to learn technological skills through imitation of competitors generates spillover effects related to the process of diffusion of innovation. The basic model presented here focuses on a particular aspect of schumpeterian competition: the relationship between industry initial concentration and its overall innovative performance and, vice-versa, between innovation process and the evolution of industry structure over time. In this same perspective we also analyze how firms interactions and the structure of technology concur in determining the success or failure of an innovative strategy. Finally we argue that the model presented here might constitute a flexible framework worthy of further applications in the study of innovation process and technological progress
Symposium on Mario Diani’s book. An Introduction
For Symopium abstract is not require
Movements and Parties: An Introduction
The article provides an analytical introduction to the Symposium devoted to Sidney Tarrow's "Movements and Parties. Critical Connections in American Political Development". First, it discusses the relevance of the book with regards to the Movement-Parties scholarship. Second, it presents the content of the Symposium, focusing on the main arguments developed by the various authors
Mark Braude. The Invisible Emperor: Napoleon on Elba From Exile to Escape
Review of The Invisible Emperor: Napoleon on Elba From Exile to Escape. London: Penguin, 201
Symposium on Mario Diani’s book. An Introduction
For Symopium abstract is not require
Topological origin of the phase transition in a mean-field model
We argue that the phase transition in the mean-field XY model is related to a
particular change in the topology of its configuration space. The nature of
this topological transition can be discussed on the basis of elementary Morse
theory using the potential energy per particle V as a Morse function. The value
of V where such a topological transition occurs equals the thermodynamic value
of V at the phase transition and the number of (Morse) critical points grows
very fast with the number of particles N. Furthermore, as in statistical
mechanics, also in topology the way the thermodynamic limit is taken is
crucial.Comment: REVTeX, 5 pages, with 1 eps figure included. Some changes in the
text. To appear in Physical Review Letter
Movements and Parties: An Introduction
The article provides an analytical introduction to the Symposium devoted to Sidney Tarrow's "Movements and Parties. Critical Connections in American Political Development". First, it discusses the relevance of the book with regards to the Movement-Parties scholarship. Second, it presents the content of the Symposium, focusing on the main arguments developed by the various authors
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