The objectives of this research were to 1 ) study the personal factors of food handlers in the canteen of the Ministry of Public Health Nonthaburi Province in the epidemic situation of coronavirus disease 2019. 2) Study the operations according to the food sanitation standards of food handlers. 3) Study the factors related to the performance of food handlers according to food sanitation standards. 4) Guidelines for solving problems in the work of food handlers according to food sanitation standards which the research area is in the canteen of the Ministry of Public Health Nonthaburi Province in the situation of the epidemic of coronavirus disease 2019. The research used a mixed method research consisting of a quantitative research using a sample of100 food handlers per restaurant and a qualitative research by interviewing 3 groups of food handlers. The statistics used in the data analysis were: frequency percentage mean chi-square and Pearson correlation. The results of the research showed that 1) the personal factors of the majority of food handlers 68.00 percent are female 37.00 percent aged between 41 - 50 years36.00 percent graduated from high school 42.00 percent with average monthly income between 10000 - 20000 baht 97.00 percent are Buddhists and most 27 percent are food handlers from rice and curry shops. 2) The food sanitation practices of food handlers in the coronavirus disease 2019 epidemic situation found that 65.00 percent of the workers performed according to sanitary principles at a very good level. 3)Factors related to the performance in accordance with food sanitation standards of food handlers in the epidemic situation of coronavirus disease 2019. The results of the study revealed that as for the personal factors of the restaurant type the leading factories the general knowledge of the coronavirus disease 2019 epidemic situation and knowledge of food sanitation in the epidemic situation of coronavirus disease 2019with contributing factors including the support of equipment to clean or prevent coronavirus disease 2019 from government agencies. Food handlers agencies courage participation in sanitation practices. They have also received training or advice from staff on how to behave in the midst of the coronavirus disease 2019 outbreak there was a statistically significant correlation at the .05 level. As for personal factors in terms of gender age education income and religion there are contributing factors such as the agency of food handlers campaigning or announcing measures to prevent the spread of the coronavirus disease 2019 and had been trained in food sanitation. There are additional factors such as having received food sanitation assessment during the coronavirus disease 2019 epidemic situation received a certificate for clean and safe restaurants to prevent COVIC-19 and 4) guidelines for solving problems in working in accordance with the rules of food sanitation standards of food handlers in the canteen of the Ministry of Public Health Nonthaburi Province in the situation of the coronavirus disease 2019 epidemic found that workshop sanitation training should be organized performance and personal hygiene assessments should be carried out. For public relations work there should be more communication channels additional measures on the part of service users and cleanliness including support for protective and cleaning equipment.

Problem with the development of performance for racing cars. When a car is without a front wing and rear wing it will affect the racing car unstable. So we had an idea to study and design the front wing and rear wing for installation on a student formula racing car to increase efficiency the racing car turning when is compared with the racing car without front wing and rear wing. In operation. First plan the implementation of the project. Then study subject content such as Computational Fluid Dynamics Fluid Mechanics Aerodynamics TSAE competition rules and steps to using the SOLIDWORKS Program. We use SOLIDWORKS to compare the aerodynamic performance of each front and rear wing and analyze the results. Flow Simulation using the SOLIDWORKS Program We have got Flow Simulation performed on the front wing and rear wing of 1 2 and 3 elements. In terms of flow simulation we use a 50 km/h wind speed to hit the front and rear wings. The results showed that the front wing and rear wing when assembled with a car. We have studied and selected the angle of attack that has the highest life coefficient to be assembled on the Student Formula Racing Car. The Front Wing and Rear Wing are 2 elements of the Front Wing and 2 elements of the Rear Wing. They have a Drag Coefficient of 0.38 and a Lift Coefficient of 0.30.

This research is intended to be used as a guideline for the study of decision making in choosing a skin aesthetic clinic. The study was conducted from a sample of 400 randomized sets. The instruments used were questionnaires. The data consisted of demographic characteristics including 26.8% males and 73.2% females 53.0% aged between 20-30 years 60.0% bachelors degree holders 37.3% an employee of a private company and 33.5% average monthly income of 20001 - 30000 baht. The results showed that the service marketing mix factors (7Ps) of skin aesthetic clinics including product or service price people or staff physical evidence and processes of service provision positively influent the decision to choose a skin aesthetic clinic. The results showed that the overall decision-making factors in choosing a skin aesthetic clinic service were averaged at 3.85 percent a high level. The highest aspect was the search for information followed by the problem awareness decision making and alternative assessment respectively.

This research aims to study how the level of excellence in the accounting profession and the usage of artificial intelligence technology affect the quality of financial reports of certified accounting practice. For the data collection the researcher used questionnaires. The population examined in this research consisted of 88 accountants working for high-quality accounting firms registered in Thailand. Descriptive statistics namely frequency percentage mean and standard deviation and inferential statistics including Pearson’s Correlation Coefficient and Multiple Regression Analysis were used to analyze the data. The study results reveal that accountants registered and working in high-quality accounting firms in Thailand reach a high degree of excellence overall. Furthermore artificial intelligence technology allows these accountants to positively affect the overall financial report quality at the highest level. The results of the research hypothesis test found that: 1) excellence in the accounting profession positively affects the quality of financial reports both overall and in every individual aspect and the result is statistically significant at the 0.01 level; 2) the use of artificial intelligence technology positively impacts the quality of financial reports both overall and in the individual aspect and the result is statistically significant at the 0.01 level.

This thesis presented the design and construction of an adaptive active band-pass filter by using a tachometer circuit. The main part was the multi voltage-mode filter circuit based on an operational transconductance amplifier which could automatically adjust the center frequency to adapt to the input signal frequency by the tachometer circuit. The frequency error value in the center frequency was set to be ≤ 3% of the input signal. Furthermore the proposed filter could support the input signal in the frequency range of 10 Hz - 10 kHz. From the simulation and experimental results of the proposed prototype filter it could respond to the frequency according to the theory of the band-pass filter and the error in choosing the center frequency which was 1.45 % and 2.6 % respectively (below the set error value of 3 %). Therefore the proposed filter could be used for real application. The working principles of the proposed prototype filter could also be applied to the noise attenuation circuit of an electrocardiogram machine. Moreover this research could be used as a guideline study for those who want to develop other types of adaptive active filters for higher efficiency.