"Scientific research" Almanac

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  EQUILIBRIUM IN STOCHASTIC OPTIMIZATION MODELS WITH ECONOMIC APPLICATIONS

  The subject of this work is the application of a linear quadratic model which is a result of the stochastic modeling process in the economic field. A dynamic economic process is modeled, which occurs in conditions described by a stochastic differential equation. The dynamics of the process is subject to jump-like changes. Such systems are known as ... The subject of this work is the application of a linear quadratic model which is a result of the stochastic modeling process in the economic field. A dynamic economic process is modeled, which occurs in conditions described by a stochastic differential equation. The dynamics of the process is subject to jump-like changes. Such systems are known as Markov jump linear systems. The target in the observed process is modeled through a functional which has to be minimized. The result is a linear quadratic stochastic model. The equilibrium search model is related to the numerical solution of a system of generalized discrete-time algebraic Riccati equations. Methods for finding the maximal solution to a system of discrete-time algebraic Riccati equations are investigated. Moreover, new methods and algorithms for computing of this maximal solution are proposed. The numerical characteristics of algorithms are analyzed in special cases of negative definite weighting matrices and indefinite weighting ones. Conclusions are derived of the applicability and efficiency of the proposed methods.

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  ANALYSIS OF BULGARIA’S SPECIALIZATION IN THE FIELD OF FOREIGN TRADE IN AGRICULTURAL PRODUCTS

  The present survey aims to study the dynamics of the foreign trade flows of agricultural products between Bulgaria and the other EU Member States, the Balkan countries and the former members of CEFTA (until 2007). Using a methodological toolbox the author measures the degree of trade specialization of our country in the field of import and export ... The present survey aims to study the dynamics of the foreign trade flows of agricultural products between Bulgaria and the other EU Member States, the Balkan countries and the former members of CEFTA (until 2007). Using a methodological toolbox the author measures the degree of trade specialization of our country in the field of import and export of agricultural products in terms of separate product groups. In the process of research the author follows the dynamics of specialization in the field of trade in agricultural products and outlines the changes in the export and import flows resulting from various economic and political factors as well as defines the degree of effect of these changes on the economic development.

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  WOMEN ENTREPRENEURS IN AGRICULTURE

  Promoting entrepreneurship is one of the main directions of contemporary European SME policy. Particular attention is paid to women entrepreneurs and potential future entrepreneurs. The topicality of these issues arouses scientific researchers’ interest and is the basis for determining the objects of the present study. In literature there are ... Promoting entrepreneurship is one of the main directions of contemporary European SME policy. Particular attention is paid to women entrepreneurs and potential future entrepreneurs. The topicality of these issues arouses scientific researchers’ interest and is the basis for determining the objects of the present study. In literature there are different approaches that can be applied in defining the characteristics of women entrepreneurs and the motivation of young entrepreneurs. The research has built a conceptual model that is used as a methodological basis for conducting research in the field of agriculture.