title: [Optimization of inventory levels in the blood transfusion centers in Morocco].
abstract: OBJECTIVE
  Improve the flow of quantities of blood products between the different centers to restore the ideal quantities at low cost.
  
  
  METHODS
  The problem addressed in this work concerns the balancing inventory levels between blood transfusion centers in Morocco. This problem is characterized by a number of constraints to be taken into account: safety stock, stock ideal proportional balancing of stocks, etc. An integer linear model has been proposed to determine the optimal allocation between different centers. Two variants are examined; the first which aims to minimize the level of inventory loss, the second is to balance the different levels of stock, so that all centers have a level of surplus stock and/or loss proportional to the ideal stock.
  
  
  RESULTS
  Two variants of an integer linear model that determine the optimal allocation between different centers has been proposed and their performance was evaluated by experimental results obtained using a solver commercial.
  
  
  CONCLUSIONS
  The results of this study allow us to meet the goal of PSL availability of sufficient and subsequently the quality of service required blood transfusion.
authors.affiliation: Équipe technologies d'information et management des entreprises (TIME), ENSIAS, université Mohammed 5 Souissi, BP 713 Agdal, Rabat, Maroc. Electronic address: bellabdaoui@ensias.ma.
authors.forename: A
authors.initials: A
authors.lastname: Bellabdaoui
authors.affiliation: Laboratoire d'informatique systèmes et énergies renouvelables (LISER), ENSEM Casablanca, route d'El Jadida, BP 8118 Oasis, Casablanca, Maroc. Electronic address: bennisidriss@gmail.com.
authors.forename: I
authors.initials: I
authors.lastname: Bennis
authors.affiliation: Laboratoire d'informatique systèmes et énergies renouvelables (LISER), ENSEM Casablanca, route d'El Jadida, BP 8118 Oasis, Casablanca, Maroc. Electronic address: janah.saadi@gmail.com.
authors.forename: J
authors.initials: J
authors.lastname: Saadi
authors.affiliation: Centre national de transfusion sanguine, rue Mfdel Charkaoui, avenue Allal Al Fassi Madinat Al Irfane, Rabat, Maroc. Electronic address: drbenajiba@hotmail.com.
authors.forename: M
authors.initials: M
authors.lastname: Benajiba
mesh_terms: D001771:Blood Banks / Q000706:statistics & numerical data* / Q000600:supply & distribution*; D001803:Blood Transfusion / Q000706:statistics & numerical data*; D006801:Humans; D016014:Linear Models; D009018:Morocco
keywords: Balancing inventory levels; Blood transfusion; Linear programming; Optimisation; Optimization; Programmation linéaire; Transfusion sanguine; Transport and logistics; Transport et logistique; Équilibrage des niveaux de stock