Question: A logistics firm owns 5 trucks. Their objective is to visit 5 different distribution centers ( DCs ) in Montreal and pick - up the

A logistics firm owns 5 trucks. Their objective is to visit 5 different distribution centers (DCs) in Montreal and pick-up the necessary items belong to 10 Montreal area businesses (B) and deliver them twice per day. When a DC receives an item, its final destination (final shipping address is one of the 10 businesses) is known. Distance between all physical locations and arrival rates (proportion of arriving items belonging to a business) of items at each distribution center are given in table below. Items arrive to distribution centers randomly all day long (probability distributions are provided in the table below). Average speed of trucks are 40km/hr in Montreal. First pickup from distribution centers is at 8 AM in the morning and latest pickup is at 5 PM in the afternoon. Based on the given information, model the distribution operations in Arena to simulate for 10 days. Please use ARENA blocks to model your distribution system.

Table 1: Distance between facilities

 DC1 DC2 DC3 DC4 DC5 B1 B2 B3 B4 B5 B6 B7 B8 B9 B10

DC1 0 1 13 5 10 7 6 30 28 16 47 4 42 5 41

DC2   0 16 5 3 44 3 20 22 47 41 20 30 28 31

DC3     0 1 2 12 21 44 26 37 31 47 34 40 3

DC4       0 5 11 33 5 25 26 38 20 33 31 1

DC5         0 6 35 37 20 31 31 24 38 47 35

Business 1           0 1 24 37 36 43 8 47 14 3

Business 2             0 6 1 31 0 44 35 34 7

Business 3               0 37 44 8 7 24 48 40

Business 4                 0 45 17 41 39 40 21

Business 5                   0 7 4 18 18 6

Business 6                     0 15 2 40 21

Business 7                       0 25 19 21

Business 8                         0 44 21

Business 9                           0 24

Business 10                             0

Table 2: Arrival patterns of items at DCs and their distribution to each organization (B1 ... B10)

Time between arrivals Probability of arriving items to be for a particular business

 B1 B2 B3 B4 B5 B6 B7 B8 B9 B 10

DC1 EXPO(5) minutes 0.08 0.10 0.09 0.10 0.08 0.15 0.15 0.08 0.12 0.06

DC2 TRIA(5, 7, 10) minutes 0.15 0.04 0.09 0.15 0.07 0.10 0.14 0.07 0.06 0.14

DC3 EXPO(3) minutes 0.08 0.08 0.11 0.08 0.11 0.15 0.15 0.11 0.06 0.09

DC4 TRIA(3, 5, 10) minutes 0.07 0.15 0.10 0.05 0.12 0.07 0.12 0.12 0.12 0.09

DC5 NORM(5, 1) minutes 0.08 0.04 0.11 0.08 0.17 0.16 0.13 0.11 0.10 0.04


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