2.2 Leterature Reviews
There are many researches for studying surveying and gathering processes of logistics management in
wholesale businesses and linkages among manufacturers, wholesalers and retailers. The wholesale businesses
have applied the logistics management theory comprising wholesale store management, organization, human
resource and logistics development planning for raising efficiency. The selected pilot company for the southern
part of the Northeast of Thailand, Taweekit Department Store (Burirum Province), showed that the result of the
development program records a decrease in stock value of about 50.73 million baht within 6 months [11]. From
the Middle part of Thailand, Samorn Piboon (Samutsongkarm Province) Store, showed a result of the
development program records a decrease in stock value of about 8.20 million baht within 6 months [12]. From
the South of Thailand, Kaichoung K.C. (Ranong Province) Store, showed a result of the development program
records a decrease in stock value of about 18.11 million baht within 6 months [13].
There is a research about a new mathematical model of logistics systems for solving the inventory cost in the
wholesale businesses. The research is a study and a survey of logistics management for wholesale and retail
businesses with six locations in four regional areas of Thailand. The objective of this research is an application of
simple mathematical model to solve logistics management for wholesale and retail businesses. The results of the
analysis found that respondents manage their inventories through feeling for their businesses. Also, the
forecasting of the value of sales volume errors resulting in a backup product to sell is in high inaccuracy. This is
an important issue that needs to be improved by using a mathematical model of the application of logistics
management. We use warehouse management to be a data center management for purchases and sale
management. The result of the development of logistics management finds that the stock value of the inventory
reduces to 72 million baht approximately [14].
There was a previous work concerning research of forecasting model for wholesale businesses with a case
study conducted at Seri Lumpang Department Store. Using sales data of all 82 suppliers from January 2010 to
December 2010, it determined the appropriate forecasting model by using the Mean Absolute Percentage Error
(MAPE) with the lowest cost. In the test, the forecasting found 35 suppliers could be appropriated with the
moving average, 27 suppliers were in line with the season series Winters, 13 suppliers could be appropriated with
exponential smoothing, and 7 suppliers could be appropriated with double exponential smoothing respectively [15].