00614naa#a2200169#i#450# EN\\bibl\106417 20260117060644.6 2072-9502 20251110b2025####ek#y0engy0150####ca RU Adaptive testing model with gradation of tasks by levels of assimilation Journal article Astrakhan Astrakhan State Technical University 2025 8 с. Journal article local Прикладные информационные (компьютерные) технологии. 004.9 Medyankina Elena Lvovna vestnik.astu.org