The paper proposes a model of an ecological backpack, which corresponds to the interpretation Friedrich Schmidt-Blick, for Ukrainian coal at stage its extraction. environmental backpack is included in concept MIpS (Material input per unit service). It that has been adopted as response function “grey” cybernetic box symbolises national mine fund. factors determine are biotic and abiotic material...

Context is a vague notion with numerous building blocks making language test scores inferences quite convoluted. This study has made use of a model of item responding that has striven to theorize the contextual infrastructure of differential item functioning (DIF) research and help specify the sources of DIF. Two steps were taken in this research: first, to identify DIF by gender grouping via l...

the present study sustainable management of guilan saravan sylvan park was planned. the used method in the form of decision support model in three10-year period was studied for parks of various states and with considering the economic, ecological and social criteria during the years 2008 to 2038. by using hierarchical fuzzy analysis method, the reaching to an optimal level of economic, ecologic...