Hi, Based on the book Chapters(2,3,4,5)and slides attached Please summarize the article attached following these steps: 1- The problem in the article must be clearly and consistently defined, summarized and explained fully. 2- Model Construction - Development of the functional mathematical relationships that describe the decision variables, objective function and constraints of the problem. Step 1 : Clearly define the decision variables. Step 2 : Construct the objective function. Step 3 : Formulate the constraints. 3- Model Solution - Models solved using management science techniques.