?????? ???????? ????? ??????? ????? ?????? ???????????? ? ???? a Concentrated ??????? ?????? WFH ?????? ???? ?????????? ??? ????????????: ????? ???? so many solutions ????, ????????? ?????????? ????? ????? ????? ??????????? ??????????? ???????? ?????????????? ?????? ??????? employing a ?????????? ?????? ?????????????? ?????? ?? ???????? ???????????