Design and Architecture

I am working above IEEE paper can anyone help me to understand above topic please help me to understand

Public Class Recipe
     Public Property Name
     Public Property Ingredients as list(of Ingredient) 'Meat, potato, etc.
     Public Property CookingWays as List(Of String) 'Frying, Roasting, etc.
End Class

Public Class Persister
      Public Sub Register(Rec as Recipe ) 
           'Process that inserts the data stored in Recipe to Database
      End sub
      Public Function GetObject(Rec as Recipe, id as Long)   as Recipe
           'Process that fills a Recipe Instance with the data from DataBase
            Return Rec
      End sub

End Class

Public Class Factory
      Public Function Instatiate(Recipe as String) 
           Return New Recipe
      End sub

      Public Function Instatiate(Recipe as String, id As Long) 
           Dim rec as recipe = Instantiate("Recipe") 'New empty recipe
           Persister.GetRecipe(rec, id) 'I get a recipe object filled with information from database
      End sub

End Class

Public Class Validator
      Public Sub Validate(Rec as Recipe)   
            'Logic validation for recipe. If it doesn't pass throw exception
      End sub
        Public Sub Validate(Ing as Ingredient)   
            'Logic validation for ingredient class. If it doesn't pass throw exception
      End sub
 

End Class

Public Class FormManager
      Public Function Insert(Rec as Recipe) as Recipe
            RecipeForm.Action = "Insert"
            RecipeForm.Show()
            Dim Val as new Validator
            Val.Validate(RecipeForm.ObjectInUse)
            Return RecipeForm.ObjectInUse
      End sub
      Public Sub Insert(Ing as Ingredient)   as Recipe
            IngredientForm.Action = "Insert"
            IngredientForm.Show()
            Dim Val as new Validator
            Val.Validate(IngredientForm.ObjectInUse)
            Return IngredientForm.ObjectInUse
      End sub
'Each form is built to change its appeareance and behaviour according to the action to perform. For example sets a title like "New Recipe" or "Modify ingredient". 
End Class

Public Class RecipeManager 
     Public Function CreateRecipe As Integer       'User set the recipe, it is stored in database and returns cooking time.
          Dim fac as new Factory
          Dim Rec =  Fac.Instantiate("Recipe")

          Dim f as new FormManager
          rec = f.Insert(Rec)

        'When the form is closed if the user said:
	'-"Cancel" : returns nothing.
	'-"Save": Calls the Validaror class, if it's ok => returns the Recipe object with its properties.

          

          If Rec is Nothing Then
               Exit Function
          Else
              
               Dim per as new Persister
               Per.Register(Rec)
          End If

          Return GetTime(Rec)

     End Sub

     Private Function GetTime(RecipeToAnalyse as Recipe) as Integer 'minutes to make the meal
          'Complex process that calculate the time
     End sub
      
End Class