نتایج جستجو برای: social instability
تعداد نتایج: 696804 فیلتر نتایج به سال:
Motivated by earlier calculations showing large effects when neutrinos propagate through fluctuating media, we perform here a detailed analysis of how density fluctuations in the sun in the form of helioseismic waves can modify the MSW solution to the solar neutrino problem. We find negligible effects for the MSW spectrum, even under extreme circumstances. There are two main reasons why our con...
This paper develops a model of wage distribution and wage dynamics based on assignment and Pareto learning. The model matches a large number of key facts about wage distribution and wage dynamics. The tractability of Pareto learning allows us to derive joint implications on the wage distribution and wage dynamics as assignment becomes more important. Our model also provides a natural framework ...
We study the finite-size effects in some scaling systems, and show that the finite number of agents N leads to a cut-off in the upper value of the Pareto law for the relative individual wealth. The exponent α of the Pareto law obtained in stochastic multiplicative market models is crucially affected by the fact that N is always finite in real systems. We show that any finite value of N leads to...
The study of the effects of spatially uniform fields on the steady-state properties of Axelrod's model has yielded plenty of counterintuitive results. Here, we reexamine the impact of this type of field for a selection of parameters such that the field-free steady state of the model is heterogeneous or multicultural. Analyses of both one- and two-dimensional versions of Axelrod's model indicate...
Insider trading is one of the numerous white collar crimes that can contribute to the instability of the economy. Traditionally, the detection of illegal insider trades has been a human-driven process. In this paper, we collect the insider trade filings made available by the US Securities and Exchange Commissions (SEC) through the EDGAR system, with the aim of initiating an automated large-scal...
Economies entirely dependent upon local environmental resources should have a greater incentive to preserve those resources than economies based on specialization and trade. Evidence from history and prehistory, however, shows that many regionally based economies have collapsed because of environmental overexploitation. Evidence from the past shows that there is a strong connection between envi...
This paper describes and analyses the creation and development of an Academic Health Science Centre (AHSC) as a major organizational innovation diffusing in the health knowledge economy, internationally. Drawing on an institutionalist model utilized in an earlier study of a failed merger in the USA (Kitchener, 2002), we explore empirically why the creation of this new AHSC in the UK produced ve...
We establish quantitative stability results for the entropy power inequality (EPI). Specifically, we show that if uniformly log-concave densities nearly saturate the EPI, then they must be close to Gaussian densities in the quadratic Wasserstein distance. Further, if one of the densities is log-concave and the other is Gaussian, then the deficit in the EPI can be controlled in terms of the L-Wa...
Anger and affective instability are key features of borderline personality disorder (BPD). Given the dynamic nature of affect, it is ideally studied using ambulatory assessment (AA). Recently, several major studies have examined affective instability via momentary self-report, using electronic diaries, which participants can use throughout their daily routine. The present study sought to comple...
Recently, we introduced in [1] a model for product adoption in social networks with multiple products, where the agents, influenced by their neighbours, can adopt one out of several alternatives. We identify and analyze here four types of paradoxes that can arise in these networks. To this end, we use social network games that we recently introduced in [15]. These paradoxes shed light on possib...
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