???? ?????? ??????? ?? ???????? ?? ???????; ?? ??????? ?????? ??? ?? ??????????? ??? ????????.? ??????? ?????????? ? ???????? ????? ?????????? ??? ??? ?????? ????? ??? ??????????? ??????????? ??? ??? ????????? ??? ??? ?????????? ? ??? ??????. ?????????? ??????????There are several techniques needed to handle SEM which include information Assessment