The objective of this research improve the taxation process service KhunKaew Subdistrict Municipality Office. Quality Function Deployment: QFD is found that the standard of period operating time should be resolved by applying the principle of improving ECRS that reduce the working time of Property tax collection process. There are 6 steps of the testing process and finding the standard time with the 10-cycle times to find out about appropriate number of cycles using the Maytag table at 95% reliability and ±5% precision. The results are found that the appropriate of 13 sub-tasks number cycles times and no more than 10 cycles. Then use the average time to find out determining allowances time for determine standard time. The results after applying the ECRS principle to improve and solve problems in sub-work are found that it can reduce the number of sub-work from 13 works to 11 works and also can reduce the cycle time from 1168.88 seconds down to 633.68 seconds or 45.74%. There are reduce wasting of working process waiting times duplication of work. The result could be applied with another tax collection the similar methods and could be responses the customer requirements.

The objectives of this study is to increase efficiency of steam boiler 2.5 ton per hour which used liquid petroleum gas LPG as fuel. bringing heat recovery inside boiler chimney stack to preheat feed water with technology heat Exchanger Economize. Taking the economizer with its pipe length of 1000 mm and 62 mm diameter for 64 pipe is a cross flow with staggered tube to increase water temperature before entering the boiler pass to deaerator The study is carried out to compare the differences and savings of the feed water temperature steam boiler efficiency and fuel consumption between having the economizer installed and uninstalled. reference to study The result after installed the heat exchanger economizer the feed water is passed into steam boiler deaerator higher temperature from 38.30°C to 67.20°C which leads to increase efficiency of steam boiler from 81.59 % to 85.65 % meaning that the fuel consumption of steam boiler will be reduced 4.97 %

Frozen fish thawing method using an Electrostatic Technology from a High Voltage Electricity (ETHVE) is one of an alternative method. Due to this method the material has a uniform temperature and also increase the temperature of the material resulting in a short time thawing process. Therefore the objective of this research is to develop the thawing method for frozen tunas using an ETHVE compared to some water immersion method. The experiment was carried out by using frozen tunas with an initial temperature of -18 °C then thawing frozen tunas with the ETHVE until the temperature of the tunas increased to 5 °C. Then the tunas were steamed until the temperature of 60 °C compared to that water immersion method. The qualities of steamed tunas were determined by percentage of tunas meat and tunas blood. The results showed that the tunas thawing techniques using the ETHVE provided a uniform temperature of tunas meat both the surface and the center the piece of tunas. In addition this technique also provided a higher percentage of tunas meat and tunas blood and some surface area has slight burns compared to that water immersion method. The frozen tuna which was thawed by using the ETHVE method which some surface and center using temperature at 5 °C and –2 °C respectively. The tunas surface area were slightly burned the percentage of tunas meat and tonas blood were 45% and 5% respectively. During the frozen tuna thawing using the water immersion method has the surface and center temperature at 12 °C and –2 °C respectively; The tunas surface area were very burnt the percentage of tunas meat and tunas blood were 42% and 3% respectively.

This paper aim to be improvement the installation methods for Sliding Aluminium Door and Glass in order to be the good quality product by applying the motion and time study design the new model of the receiver lock set for the sliding door. The step of study process started from studied the sliding door installation processes gathering the works process and reducing unnecessary and duplicate of work process on site elimination establishing standardized time for modifying the installation process. From the result before applied new method we founded that the installation process before installation process improvement we were spent the time of installation process at 45.38 minute per set and after we used the new method we founded that the installation process time was 35.36 minute per set it can be decreased the installation time was 10.02 minute and the efficiency of work process operation was increased 22.08 percent and the line balancing performance before improvement was 56.73 percent and after improvement was 88.40 percent and the line balancing performance was increased 31.67 percent. Unless there are the improvement installation methods it makes the company in case study will be do the work to be delay and cannot be hand over the works just in time by the schedule planning.

The purpose of the study on decision making to buy Arowana fish online was to investigate the customers’ purchasing behavior on Arowana fish through online selling channels. This is a survey research study and the tools used in the study were the online surves generated from the review of relevant research papers. The data were analyzed from 311 customers using frequency mean standard deviation K-Mean clustering grouping. The research result revealed that most of the customers were males between 31-40 years old with buying reasons for the beauty of the fish called Malaysian Golden Arowana with the price between 5000 - 10000 baht. According to the study on the factors affecting the decision to buy Arowana fish via the online channel the respondents had a high level of decisionmaking on marketing mix in all aspects including the product physical environment price distribution channel process marketing promotion and person. It was found that male behavior was different from the female in terms of the price to purchase which was less than 5000 baht. It was also found that they were from all ages with the same reasons to buy fish for its beauty. However the fish species purchased and prices varied according to the age range. The respondents who were less than 20 years old bought high back Arowana fish for the price of lower than 5000 baht as well as those from 20 to 30 years old. The customers who were 31 - 40 41-50 51-60 and over 60 years old bought golden Malaysian Arowana on the price ranges from lower than 5000-10000 baht 20000 baht or more 5000 baht and lower and 10000 - 20000 baht respectively. By segmenting customers by means of K-Mean Clustering it was found that in Group 1 the majority were males aged 41- to 50 years old with the reasons to buy for the beauty of golden Malaysian Arowana fish with the price of 5000 - 10000 baht. Group 2 was mainly males 21 - 30 years old with the reasons to buy for the beauty of golden Malaysian Arowana fish with the price of lower than 5000 baht. Group 3 was mainly males who were 21 to 30 years old with the reasons to buy for the beauty of golden Malaysian Arowana fish with the price of less than 5000 baht. The fourth group was all males aged from 31 to 40 years old with the reasons to buy for the beauty of golden Malaysian Arowana fish with the price of 5000 - 10000