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 หัวเรื่อง:ไม่มีชื่อไทย (ชื่ออังกฤษ : Performance Test of Rice Combined Harvesters) ผู้เขียน: วิชา หมั่นทำการ*, Kastsunobu Gonno สื่อสิ่งพิมพ์:pdf AbstractField Performance Test in relation to accuracy of operation and cleaning efficiency of two different rice combined harvesters, a locally-made rice combined harvester and a Japanese head-feeding type combined harvester were tested. The locally-made rice combined harvester was tested at two speed ranging from low speed (0.464-0.482 m/s) and high speed (0.787-0.807 m/s). At low speed test, the total grain loss and cleaning efficiency were 3.75-5.963% and 87.93% respectively, compared with the high speed test, the total grain loss and cleaning efficiency being 4.848-8.009% and 89.43% respectively. The Japanese head-feeding type combined harvester was tested at four speed ranging from low speed (0.320-0.395 m/s), medium speed (0.612-0.693 m/s), high speed (0.81-0.835 m/s) and very high speed (1.00-1.063 m/s). It was shown that the most suitable speed of the machine was the high speed which it gave the lowest total grain loss of 3.995-4.747% and cleaning efficiency of 93.20%. |
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 หัวเรื่อง:ไม่มีชื่อไทย (ชื่ออังกฤษ : Noise Trading Behavior Analysis in the Stock Exchange of Thailand) ผู้เขียน: ดร.ธนโชติ บุญวรโชติ, รองศาสตราจารย์ , Sanhakit Panyawattananon สื่อสิ่งพิมพ์:pdf AbstractThis study used the causality test suggested by Sellin (1996) to analyze the trading behavior of all investor types on the Stock Exchange of Thailand (SET). The performance test developed by Kamesaka and Wang (2004) was also used to show the trading performance of investor groups in the Thai stock market. The results showed that all investor groups in the SET seem to be informed traders. However, the results from the performance test of each investor group during 2006-2010 showed that foreign investors have the highest performance levels on the SET, while local investors have the lowest. Thus, the SET regulators should help local investors to improve their analytical methods of stock pricing. |