TY  - JOUR
T1  - A Mathematical Model for Locating Potential Central Markets and Arranging
Transportation Routes for Oil Palm Transportation in the Upper Southern Part of
Thailand
AU - Poosabmee Ponatong, Banthita AU - Sindhuchao, Sombat 
JO  - Journal of Engineering and Applied Sciences
VL  - 15
IS  - 1
SP  - 198
EP  - 205
PY  - 2020
DA  - 2001/08/19
SN  - 1816-949x
DO  - jeasci.2020.198.205
UR  - https://makhillpublications.co/view-article.php?doi=jeasci.2020.198.205
KW  - Mathematic model
KW  -location routing problem
KW  -oil palm
KW  -carbon dioxide emission
KW  -transaction
KW  -computational results
AB  - There is no central market for oil palm in Thailand. Knowing that the central market can help reduce
logistic costs and provide a suitable price for oil palm transaction, this research studies a problem of selecting
locations of oil palm central markets and constructing vehicle routes for oil palm collection under vehicle speed
and capacity limitation with the objective of minimizing the total cost that consists of the vehicle routing cost,
the fixed operating cost and the depreciation of the central markets and the vehicles. A mathematic model of
the problem is formulated and then validated using comparison and cutting methods. The problem instances
are generated from real data of 439 townships of 6 provinces in the upper Southern area of Thailand. Forty-two
problems are tested and solved by using a computer software. The computational results show that based on
all problem instances, the total cost can be reduced by at least 5.76% when compared to the one of the existing
process. In addition with a reduction of the total travel distance, the amount of carbon dioxide emission goes
down by at least 13.35%.
ER  -