Farah, RoukayaAdjiba, AliLehouedj, Hicham2023-05-312023-05-312020http://dspace.univ-eloued.dz/handle/123456789/25240LICENSE informatiqueTo our dear parents, May no dedication express what we owe them, for their benevolence, affection and support ... Treasures of kindness, generosity and tenderness, in testimony of our deep loves and our great gratitude "May God keep you". We would like to dedicate this humble work as proof of respect, gratitude and gratitude to our dear parents, our families and friends to all those we love for their encouragement, support, patience and prayers.Arwe gladly fulfill a duty of gratitude and thanks to all our teachersOther