This short essay provides an account of what happened in the run-up to, and during, the Copenhagen climate change summit in 2009. It briefly discusses the scientific basis for climate change policy, which came under fire only a few weeks before the Conference of the Parties. It then turns to the...

The latest financial crisis shows that the neoclassical theory has proven obsolete in its task of explaining the behavior of markets, which is why we propose the application of new theories in particle chaos theory and science of fractals to model finance. In this paper, we present a review of...

In a country on the eve of losing one third of its land, 80% of potential natural resources and 75% of external exports value, Sudan's economic future seems gloomy. Many opinions were given for economic solutions after the Southern Sudan secession. However, that does not support a theoretical...

The aim of this paper is to develop a continuous time exchange rate model that allows for heterogeneity of the agents' beliefs, in order to explore non-linearities and possible chaotic behaviour. The theoretical model contains an intrinsic non-linearity that gives rise to a jerk differential...

We provide a methodology to study the role of market distortions on the emergence of indeterminacy and bifurcations. Most of the specific market imperfections considered in the related literature are particular cases of our framework. Comparing them we obtain several equivalence results in terms...

The aim of this paper is to develop a continuous time exchange rate model that allows for heterogeneity of the agents' beliefs, in order to explore non-linearities and possible chaotic behaviour. The theoretical model contains an intrinsic non-linearity that gives rise to a jerk differential...

We move from a triopoly game with heterogeneous players (E.M.Elabassy et al., 2009. Analysis of nonlinear triopoly game with heterogeneous players. Computers and Mathematics with Applications 57, 488-499). We remove the nonlinearity from the cost function and introduce it in the demand function....

We show that the introduction of a constant tariff or subsidy levied on foreign energy can lead to a rich set of endogenous fluctuations around the unique steady state, including stable 2-, 4-, 8-, and 15-cycles, quasiperiodic orbits, and chaos. This is demonstrated in a standard neoclassical...