Scientific Research Publishing

Read  full  paper  at: http://www.scirp.org/journal/PaperInformation.aspx?PaperID=47408#.VMib9izQrzE Author(s)    Bodo Herzog Affiliation(s) ESB Business School, Reutlingen University, Reutlingen, Germany . ABSTRACT I utilize a differentiable dynamical system á la Lotka-Voletrra and explain monetary and fiscal interaction in a supranational monetary union. The paper demonstrates an applied mathematical approach that provides useful insights about the interaction mechanisms in theoretical economics in general and a monetary union in particular. I find that a common central bank is necessary but not sufficient to tackle the new interaction problems in a supranational monetary union, such as the free-riding behaviour of fiscal policies. Moreover, I show that supranational institutions, rules or laws are essential to mitigate violations of decentralized fiscal policies. KEYWORDS Differential Equations , Monetary-Fiscal Interacti...

Read full paper at: http://www.scirp.org/journal/PaperInformation.aspx?PaperID=52590#.VJujVcCAM4 Author(s)    Ismail Ibragimovich Safarov , Maqsud Sharipovich Akhmedov , Zafar Ihterovich Boltaev Affiliation(s) Bukhara Technological-Institute of Engineering, Bukhara, Republic of Uzbekistan . ABSTRACT The main features are the length of the waveguide in one direction, as well as limitations and localization of the wave beam in other areas. There is described the technique of the solution of tasks on distribution of waves in an infinite cylindrical waveguide with a radial crack. Also numerical results are given in the article. Viscous properties of the material are taken into account by means of an i...