title: EFFICIENCY: CONCEPTS, CRITERIA, LEVELS, REGIONAL ASPECT
abstract: t. Efficiency is the most important characteristic of purposeful systems, regardless of their nature – technical, economic, socio-political, organizational, etc. At the same time, various meanings are put into this concept. Another problem of understanding the essence and analyzing economic efficiency is the multiplicity of points of view based on which efficiency and effectiveness are assessed. Various definitions and performance criteria are discussed. The efficiency of the activity of one and
journal: Ecology Economy Informatics System analysis and mathematical modeling of ecological and economic systems