19 research outputs found
Mean-field behavior for long- and finite range Ising model, percolation and self-avoiding walk
We consider self-avoiding walk, percolation and the Ising model with long and
finite range. By means of the lace expansion we prove mean-field behavior for
these models if for self-avoiding walk and the Ising
model, and for percolation, where denotes the
dimension and the power-law decay exponent of the coupling function.
We provide a simplified analysis of the lace expansion based on the
trigonometric approach in Borgs et al. (2007)Comment: 43 pages, many figures. Version v2 with various (minor) changes (in
particular in Sections 1.4 and A.1), and Sect. 4 is shortened. Journal of
Statistical Physics (to appear
A monetary explanation of the great stagflation of the 1970s
SIGLEAvailable from British Library Document Supply Centre-DSC:3597.9512(2389) / BLDSC - British Library Document Supply CentreGBUnited Kingdo
Oil Price Shocks and Nigeriaâs Macroeconomy: Disentangling the Dynamics of Crude Oil Market Shocks
Personality is of central concern to understand health: towards a theoretical model for health psychology
This paper sets out the case that personality traits are central to health psychology. To achieve this, three aims need to be addressed. First, it is necessary to show that personality influences a broad range of health outcomes and mechanisms. Second, the simple descriptive account of Aim 1 is not sufficient, and a theoretical specification needs to be developed to explain the personality-health link and allow for future hypothesis generation. Third, once Aims 1 and 2 are met, it is necessary to demonstrate the clinical utility of personality. In this review I make the case that all three Aims are met. I develop a theoretical framework to understand the links between personality and health drawing on current theorising in the biology, evolution, and neuroscience of personality. I identify traits (i.e., alexithymia, Type D, hypochondriasis, and empathy) that are of particular concern to health psychology and set these within evolutionary cost-benefit analysis. The literature is reviewed within a three-level hierarchical model (individual, group, and organisational) and it is argued that health psychology needs to move from its traditional focus on the individual level to engage group and organisational levels
Strategic asset allocation and market timing: a reinforcement learning approach
We apply the recurrent reinforcement learning method of Moody, Wu, Liao, and Saffell (1998) in the context of the strategic asset allocation computed for sample data from US, UK, Germany, and Japan. It is found that the optimal asset allocation deviates substantially from the fixed-mix rule. The investor actively times the market and he is able to outperform it consistently over the almost two decades we analyze. Copyright Springer Science+Business Media, LLC 2007Dynamic asset allocation, Bond/equity ratio, Reinforcement Learning,
The Effect of Medical Test to Belief Updating and Willingness to Pay for Health Insurance Premium: Evidences from Laboratory Experiment
The benefits and costs of ethanol: an evaluation of the governmentâs analysis
Benefit-cost analysis, Regulation, Energy policy, Environmental economics, Ethanol, D61, D78, L50, Q48, Q5,