This research aimed to study the causes of changes in water quality and compare the water quality in Khlong Bang Khen Mai when the seasons and sampling points are different. These factors may cause a change in water quality. A total 50 of water samples were collected from 5 sampling points each point approximately 300 meters apart for a total distance of 1.5 kilometers. They cover three seasons such as winter (October 2020 to February 2021) summer (March to May 2021) and rainy (June and July 2021). Three parameters of this research which consist of both the chemical and physical quality parameters are pH Dissolved Oxygen (DO) and Electrical Conductivity (EC). The result shows that the average pH has ranged from 7.10 - 7.74 the dissolved oxygen (DO) was in 1.80 - 2.84 mg/L and the electrical conductivity (EC) was in the range of 327 - 517 μs/cm. A two-way analysis of variance is a statistical method used to compare the water quality in Khlong Bang Khen Mai. The results indicate that the test differences between seasons affected the change in water quality in all parameters with a statistically significant level of 0.05. Afterward the comparison of multiple comparisons by Scheffes method showed that the pH and dissolved oxygen (DO) in the rainy season were significantly different from winter and summer at the level of 0.05. For the electrical conductivity (EC) there was significant differences between summer and winter at the 0.05 level.

An investigation into the development of souvenir product prototype from Hmong embroidered fabrics to improve seniors quality of life in Kalayaniwattana District Chiang Mai Province.The aim of this study was to 1) develop a souvenir product prototype made from Hmong ethnic embroidered fabrics in Kalayaniwattana District Chiang Mai Province. 2) To develop innovative manufacturing processes to increase skills for the seniors to minimize the embroidery time. 3) To study the satisfaction towards the prototype of souvenir products from Hmong embroidered fabrics in Kalayani Wattana District Chiang Mai Province by using a sample of 200 tourists. The data collection tool was satisfaction questionnaire on the development of a prototype of a souvenir product from Hmong ethnic embroidered fabrics to improve the seniors quality of life in Kalayaniwattana District Chiang Mai Province on the aspect of its utility beauty manufacturing process and 3 souvenir product prototypes namely type 1 childrens cloth type 2 ladies robes and type 3 bags by using a random questionnaire. The data analysis generated from percentage statistics arithmetic mean and standard deviation. The study results based on the research objectives revealed the outcome as followed.l) To develop a prototype of a souvenir product from Hmong ethnic embroidered fabrics from sample group of 25 people the study found that the draft design that was satisfied as a souvenir prototype was group 1 childrens cloth. The most satisfied model was draft design 1.2 (= 4.36) group 2 shirts. The most satisfied womens group was draft design 2.1 (= 4.28). As for group 3 the bag which was assessed with highest satisfaction was draft design 3.1 (= 4.40). 2) To develop innovations in manufacturing process to enhance skills for seniors to reduce the embroidery duration it revealed that the star pattern was the simplest embroidery pattern reflecting Hmong identity through embroidered fabrics by application of antique tones together with the method of mixed silk embroidery with embroidering patch into round pieces to reduce the process and to facilitate fast embroidery process. 3) To study the satisfaction towards the prototype of souvenir products from Hmong ethnic embroidered fabrics part 1 the results of the general data study of the respondents found that most of the respondents were female accounted for 63.5 percent aged between 26-30 years representing 33.5 percent most of them were married 56% most of them graduated with a bachelors degree accounted for 60 percent most of them were employed as general staff accounted for 31 percent with monthly income at 15001-20000 baht representing 35.5% most of them domiciled in other provinces accounted for 55.5%. Part 2 information about the behavior of purchasing souvenirs found that most of the respondents already knew Kalayani Vadhana District Chiang Mai Province from social media channels (Social Network) accounted for 89 percent most of them had bought and used Hmong embroidered products 81.5 percent most of respondents would recommend other people to visit again at 100 percent most of the respondents perceived the souvenir prototypes were interesting 99 percent. Part 3 the satisfaction towards design and development of souvenir products prototypes made from Hmong embroidered fabrics found that the souvenir product prototypes that received the most satisfaction were type 3 bags (x-= 4.56 S.D. = 0.59.) in total aspects received the highest level of satisfaction followed by type 1 childrens cloth (x- = 4.52 S.D. = 0.55) with the highest level of satisfaction in all aspects and type 2 womens cloth (x-). = 4.45 S.D. = 0.65). Globally all aspects were satisfied at a high level.

This research had the objective to design and develop power production from daily life leftovers for their highest benefit of utilization by using the principle of quality function development and power generator that changed mechanical energy into electric energy. In developing electric generator product from air conditioner condensing unit the researcher found that there were 4 important factors including speed installation distance size and cross-sectional area of the fan and the test was conducted between 8.00-17.00 hours. The researcher collected the data and analyzed the test result and found that the best result in the test was to install the product at the distance of 10 cm by using an 18 fan in order to acquire the best voltage and the data were collected so that they could be implemented in developing such product in the future.

The objectives of this research are 1) to study the behavior of buying fresh food through an online application under the new norms.2) To study the importance of fresh food quality influencing the food purchasing decision-making process through an online application under the new norms.3) To compare personal factors and decisionmaking processes to buy fresh food through online application under the new norms.4) To study the relationship between the quality factors of fresh food and the process of making decisions in food purchasing through an online application under the new norms. This research is a quantitative research. The sample group of 400 people are Thai consumers who have used an online application to order fresh food at least once. The questionnaire was used as a tool for data collection. The statistics used for data analysis were frequency percentage mean standard deviation t-Test and F-Test fromone-way analysis of variance and the Pearson correlation coefficient. The findings of this study shown that almost of participants who use the online application are female age between 22-38 which have income 15001-20000 Thai Bahtper month work as employee in private company and all are single. Most of them are living with their families including 3-4 family members. In terms of participants’ behavior they know Tesco Lotuss online application for ordering fresh food the most however mostly ordered the fresh food through Tops #1 Food&Grocery. Participants know the information on how to order food from social media and usually ordered pork. Normally they decided to buy their own and often choose to buy on Saturday from 10.01 - 12.00 and have an average cost of 501 baht or more. The importance of fresh food quality influencing online shopping app decisionmaking under the new norms. Overall opinions and aspects were found to be at the highest level in all aspects. And decisions affecting fresh food choices through online applications under the new norms overall opinion found that the decision was made at the highest level. The highest level of decision making was found in 4 factors and only 1 factor is at the high level. The results of a comparison of consumer decisionmaking processes towards purchasing fresh food through an online application under the new norms the classification according to demographic characteristics were found that gender age average monthly income status and number of family members all the aspects were found to have a statistically significant difference in the decisionmaking process at the 0.05 level. And the analysis of the relationship between fresh food quality and the process of making a decision on choosing fresh food through an online application under the new norms overall aspects were found at moderate level and correlate in the same direction. When considering each aspect it was found that there was a moderate relationship. It also found that the relationship was in the same direction in 3 factors: physical quality sensory quality and safety for consumption.

The objective of this research is to study the relationship between the quality of accounting data knowledge and understanding of accounting information business organization feature and the decision-making efficiency of executives in small and medium-sized businesses in the metropolitan area. The demographic group is the management of 351 companies. The data is analyzed using descriptive statistics such as frequency percentage mean and standard deviation and inferential statistics such as pearson’s Correlation Coefficient and multiple Regression. The results showed that the administrators had a high level of knowledge and understanding of accounting information and the quality of accounting data the characteristics of business organizations and the overall decision-making efficiency of the executives at a very good level. In the multiple regression analysis between cognitive information quality of account data and business organization feature to the efficiency of the executive decision making in general (Y) the regression equation was statistically significant at the level of 0.01