Typical collective behaviors in the Couzin model are exhibited by simulation, and some performances of the system such as convergence probability and relative size are analyzed. To provide an alternative to the constant-speed setting of the Couzin model, a velocity-adaptive strategy is...

The countercyclical trade balance ratio is among the key stylized facts about open economies. The magnitude of the correlation between the trade balance and output, however, differs from country to country. In particular, the trade balance ratio is more negatively correlated with output in...

Applying the effective-field theory, we study the phase diagrams of a transverse Ising film. The phase diagrams show that, for JS/J < Rc (Rc is a critical value of JS/J), the critical temperature Tc of the film is smaller than the bulk critical temperature Tbc of the corresponding semi-infinite system; however, for JS/J >Rc, Tc is larger than the surface critical temperature Tsc of the semi-infinite system and as JS/J is increased further, Tc (except Tc of the film with two layers)...</rc>

In this paper, a generalized recurrent neural network is proposed for solving ϵ-insensitive support vector regression (ϵ-ISVR). The ϵ-ISVR is first formulated as a convex non-smooth programming problem, and then a generalize recurrent neural network with lower model complexity is designed for...

The tradable sector has a lower consumption-output comovement than that in the nontradable sector. An artificial autarky generates identical comovements. Once the economy is open, however, the comovement in the nontradable sector becomes too low. The paper demonstrates that the intensity of...