In this paper numerical results are reviewed ([13]) that demonstrate that common second-order operator-splitting methods can exhibit instabilities when integrating the Brusselator equations out to moderate times of about seven periods of oscillation. These instabilities are manifested as high wave number spatial errors. In this paper we further analyze this problem and present a theorem for sta...

The paper analyses the issue of political stability in context changes positions major actors. altered role nation-state conditions globalisation inevitably reflects on understanding security phenomenon. On other hand, number and characteristics challenges threats have increased significantly. In addition to previously present problems, there has been an increase drug trafficking, illegal migra...