Fractal image coding generally seeks to express an image as a union of spatially contracted and greyscale modified copies of subsets of itself. Generally, images are represented as functions u(x) and the fractal coding method is conducted in the framework of L2 or L1. Here we formulate a method...

Contributions to the public goods stem from selfish motivations (strategic cooperation) as well as other-regarding considerations, either related to opponents’ behaviour (reciprocity), or unconditional. In this paper we provide strong experimental evidence that these components are not...

We consider a dynamical system with small noise where the drift is parametrized by a finite dimensional parameter. For this model we consider minimum distance estimation from continuous time observations under some penalty imposed on the parameters in the spirit of the Lasso approach. This...

Building upon some education studies finding that cooperative behaviour in class yields better achievements among students, this paper presents a simple model showing that free riding incentives lead to an insufficient degree of cooperation between schoolmates, which in turn decreases the...

We examine what determines differences across countries and over time in the distribution of personal incomes in the OECD. We first model the wage determination process and show that unemployment, the labour share, and the wage differential are all functions of labour market institutions. Next...

This paper presents a simple principal-supervisor-agent model of the investment game between a supranational player (the principal), such as the European Commission, a regional government (the supervisor), and a private firm (the executing agency) . The EC is a benevolent social welfare...

The telegraph process $X(t)$, $t0$, (Goldstein, 1951) and the geometric telegraph process $S(t) = s_0 \exp\{(\mu -\frac12\sigma^2)t + \sigma X(t)\}$ with $\mu$ a known constant and $\sigma0$ a parameter are supposed to be observed at $n+1$ equidistant time points $t_i=i\Delta_n,i=0,1,\ldots, n$....

In this paper some results on the problem of computing optimal designs for discriminating between rival models are provided. Using T-optimality for two rival models a compound criterion is developed to discriminate between more than two models. Surprising results arise when T-optimal designs are...

In this paper, we develop a general collage coding framework for inverse problems in partial differential equations (PDEs) with boundary conditions. Although a general PDEs inverse problem can be very complicated, via the Generalized Collage Theorem in this paper, many such problems can be...

In this paper we test the empirical evidence of an impact of privatisation on output in the UK , through macroeconomic transmission channels. While most privatisation studies focus on microeconomic shocks, namely at firms' level, we are interested to see whether a large scale privatisation...