จำนวน Repository ( 26 )

การพยากรณ์มูลค่าการส่งออกเครื่องดื่มที่มีแอลกอฮอล์ของประเทศไทย
การพยากรณ์มูลค่าการส่งออกเครื่องดื่มที่มีแอลกอฮอล์ของประเทศไทย

The purpose of this research was to construct the appropriate forecasting model for the export values of alcoholic beverages using three-time series analysis methods including Box-Jenkins method damped trend exponential smoothing method and combined forecasting method. Time series data from the website of Office of Agricultural Economics with total 199 months from January 1998 to July 2014 were used and divided into two series. The first 192- month data from January 1998 until December 2013 were used to build the forecasting models and the last 7-month data from January to July 2014 were used to compare the forecasting method accuracy via the criteria of the lowest mean absolute percentage error and root mean squared error. Research findings indicated that for all forecasting methods that had been studied combined forecasting method was the most accurate method and this model was when and represent the single forecasts at time t from Box-Jenkins method and damped trend exponential smoothing method respectively.

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การพยากรณ์ปริมาณการส่งออกเนื้อไก่แช่แข็งและแช่เย็น
การพยากรณ์ปริมาณการส่งออกเนื้อไก่แช่แข็งและแช่เย็น

The purpose of this research was to construct an appropriate forecasting model for the export quantity of frozen and chilled chicken using three time series analysis methods including Box-Jenkins method Holt’s exponential smoothing method and damped trend exponential smoothing method. Time series data from the website of the Office of Industrial Economics with total 130 months during January 2004 to October 2014 were used and they were divided into two series. Fristly 120 months from January 2004 to December 2013 were used to build the forecasting models and lastly 10 months from January until October 2014 were used to compare the forecasting methods accuracies via the criteria of the lowest mean absolute percentage error and root mean squared error. Research findings indicated that all forecasting methods that had been studied damped trend exponential smoothing method were the most accurate method and showed the forecasting model as where m represented the number of periods to forecast ahead with the starting value was January 2014 (m = 1).

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ตัวแบบการพยากรณ์ความต้องการเหล็กภายใต้ความไม่แน่นอนโดยวิธีเบย์
ตัวแบบการพยากรณ์ความต้องการเหล็กภายใต้ความไม่แน่นอนโดยวิธีเบย์

The objective of this research is to propose a forecasting model for uncertain demand index data of steel. The forecasting model proposed by Yelland (2010) was modified by adjusting the prior distributions of some parameters in the model in order that it is suitable for the demand of steel in Thailand. The algorithms for model fitting were written in OpenBUGS. The proposed model was compared to a classical exponential smoothing model. The research found that the forecast errors from the proposed forecasting model were minimum.

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การกำกับดูแลกิจการ : การประยุกต์ใช้เป็นเครื่องมือในการพยากรณ์ความล้มเหลวของกิจการ
การกำกับดูแลกิจการ : การประยุกต์ใช้เป็นเครื่องมือในการพยากรณ์ความล้มเหลวของกิจการ

Corporate governance principle has played an important role in predicting the business failure because the concept of good corporate governance will result in value and value added to the business and shareholders. Several previous studies attempt to find the relationship between corporate governance mechanisms and firm’s performance. It was expected that company with good performance will not be likely to go bankrupt. However this article reviews the compiled documents and studies in the past concerning corporate governance mechanisms (board structure board committees and ownership) as application tool to predict business failures.

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การหาปริมาณการสั่งซื้อน้ำมันเชื้อเพลิงอย่างประหยัด: กรณีศึกษาบริษัทรับขนส่งสินค้า
การหาปริมาณการสั่งซื้อน้ำมันเชื้อเพลิงอย่างประหยัด: กรณีศึกษาบริษัทรับขนส่งสินค้า

This research focuses on the raw-material management such as fuel of a case study company being a freight forwarder in Chonburi province. The objective is to determine the economic order quantity (EOQ) and the reorder point (ROP) that minimize the total cost of handling. Five forecasting techniques are investigated to predict the future demand and it was found that the time series decomposition was the most suitable method with the least error. At the result of demand forecasting the economic order quantity is 16308.89 liters per time the total cost of handling the fuel tank is 17287.43 baht and there are ordering around 19 times per year. In addition the sensitivity study on demand factors affecting the cost of fuel tank management are also considered in this paper. It was found that 21% of the increased fuel demand brings the total handling cost is 1728.74 baht or increasing 10%. Therefore ordering economically can reduce the total cost of 1295.97 baht or 6.85%. If the company brings the studied results to improve the ordering process it will be able to forecast the order quantity more appropriately and effectively.

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