Limit Cycle, Trophic Function and the Dynamics of Intersectoral Interaction

Abstract: An article develops an idea of implementing the trophic functions in Volterra's "predator-prey" model to the linked intersectoral dynamics of the outputs. The concept of trophic functions and limit cycles are used as key factors in defining the parameters of stable economic dynamics. Two trophic functions for "cars-rolled steel" and "cars-oil products" were built in the article. These empirically based trophic functions were analytically reviewed and constructed in the article providing a tool in the analyses and forecasting of the linked dynamics of the parameters under consideration

The Eu Economic Integration: 'Pros' and 'Cons'

Abstract: Based on recent European polls, the article argues that further EU integration intended for positive economic development union has to be with countries and regional groupings having comparative economic size with the EU

©2009 Academic Journals

The heat equation and the dynamics of labor and capital migration prior and after economic integratio

Phosphorylirated, Acylirated, Carbamoilated Derivatives of Alkaloids, Nitrogen-containing Heterocycles and Antiferment Activity thereof

Available from VNTIC / VNTIC - Scientific & Technical Information Centre of RussiaSIGLERURussian Federatio

2,2′-Bis{8-[(benzylamino)methylidene]-1,6-dihydroxy-5-isopropyl-3-methylnaphthalen-7(8H)-one}

The asymmetric unit of the title compound, C44H44N2O6, contains two independent molecules with similar conformations. The dihydronaphthalene ring systems are approximately planar [maximum deviations = 0.036 (2), 0.128 (2), 0.0.24 (2) and 0.075 (2) Å]. The dihedral angle between two dihydronaphthalene ring systems is 83.37 (4)° in one molecule and 88.99 (4)° in the other. The carbonyl O atom is linked with the adjacent hydroxy and imino groups via intramolecular O—H...O and N—H...O hydrogen bonds. In the crystal, molecules are linked through O—H...O hydrogen bonds into layers parallel to (001), and adjacent layers are further stacked by π–π interactions between dihydronaphthalene and phenyl rings into a three-dimensional supramolecular architecture. In the crystal, one of the isopropyl groups is disordered over two positions with an occupancy ratio of 0.684 (8):0.316 (8)