"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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  ASPECTS OF THE INTERACTION AMONG FINANCIAL CONTROL INSTITUTIONS IN THE PUBLIC SECTOR OF THE REPUBLIC OF BULGARIA

  There are several control institutions in Bulgaria whose common subject is public finance. These are the Bulgarian National Audit Office, the Public Financial Inspection Agency, and the Internal Audit Directorate. The fact that these bodies have a common subject of control implies uniformity of the control they exercise as well as the ... There are several control institutions in Bulgaria whose common subject is public finance. These are the Bulgarian National Audit Office, the Public Financial Inspection Agency, and the Internal Audit Directorate. The fact that these bodies have a common subject of control implies uniformity of the control they exercise as well as the establishment of certain interrelations among them and the coordination of the control procedures they apply. Surveys conducted so far indicate that despite the agreements which these control institutions have signed, there is rather weak cooperation among them in practice. In addition, the volume of information they exchange before initiating control operations is fairly small, which results in duplicating the activities performed in entities which are subject to control. Hence, the lack of coordination and interaction leads to increased costs of financial audit in the public sector and diminish its efficiency. It is therefore necessary to reorganize the communication among bodies engaged in public finance control.

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  DETERMINANTS OF ECONOMIC GROWTH IN BULGARIA

  This study focuses on the most prominent theories about modeling economic growth. The factors of economic growth in Bulgaria are studied in terms of econo-metrics. The main determinants of growth are identified and the strength of their impact is measured. The positive multiplier effect of final consumption, gross capital formation, government ... This study focuses on the most prominent theories about modeling economic growth. The factors of economic growth in Bulgaria are studied in terms of econo-metrics. The main determinants of growth are identified and the strength of their impact is measured. The positive multiplier effect of final consumption, gross capital formation, government expenditures on employee compensation, exports and unilateral gratuitous transfers are determined. Opportunities for stimulating economic growth in Bulgaria are analyzed in the short and long run.