00508naa#a2200169#i#450# EN\\bibl\13961 20260106054305.2 2071-2367 20161031b2016####ek#y0engy0150####ca RUS RU Concept and operationalization of "social risk" definition in the reformation processes of higher education Journal article Moscow RANEPA 2016 6 с. Journal article local Melnikov Sergey zh-szf.ru