The article shows differences of presented models from used in exact science. It analyzes the reasons why for mathematic economic and social systems we cannot reach quantitative correlation modeling results with indicators real processes. discusses qualitative identity non-linear effects processes natural scientific, systems. Irremovable uncertainty system behavior connected this chaotic compon...

Data Envelopment Analysis (DEA) has two fundamental approaches for assessing theefficiency with different characteristics; radial and non-radial models. This paper isconcerned the non-radial model of Russell which is a non linear model. Conventional DEAfor a large dataset with many inputs/outputs would require huge computer resources in termsof memory and CPU time. Artificial Neural Network (AN...