The article deals with mini-CHP based on solid oxide fuel cells (SOFC) application for agricultural enterprises power supply which have biogas production possibility. Electrical energy from biogas production technology is shown. The mini-CHP on SOFC power choosing methodology is considered. Mini-CHP on SOFC power calculation was performed by the example of the dairy farming agricultural enterprise.

Keywords: power supply, agricultural enterprise, mini-CHP on SOFC, biogas installation

One of factors of success in conditions of the market relations are questions of increase of competitiveness that is especially actual for the Russian economy. In turn, Russia, possessing huge natural resources, considerable research and production and personnel potential, has low indicators on quality of life, effective use of resources and competitiveness. The analysis of existing definitions of the category "competitiveness" is provided in article, the hierarchy of levels of competitiveness is presented, the factors influencing competitiveness of construction branch are considered, the algorithm of determination of competitiveness of a construction complex of railway transport is considered.

Keywords: Competitiveness, construction complex of railway transport, competitiveness factors, assessment rating, competitors

Describes the mathematical model uncertainties of the most common in systems of automatic control. The methods of research of automatic control systems in the presence of uncertainties, allowing to reach the target of control.

Keywords: mathematical models, uncertainty management systems, methods of research, robust stability, interval methods

This article specifies and analyses various factors affecting consumer choice in the purchase of residential real estate in buildings under construction. The work sets forth a structured and specifies hierarchy of such factors.

Keywords: Incomplete housing, consumer preferences, competitiveness of construction production, residential real estate.

The article reviewed approaches, methods and indexes of valuing companies’ integration effectiveness. The process of integration is regarded as a project. The author also considers possible methods of measuring system-based synergy by means of business market value index.

Keywords: integration, integration project, system-based synergy, synergies evaluation, business market value, cut-off rate