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.

The research objectives were to study the correlation between the social information disclosure and the performance and the impact of corporate governance on the correlation between the social information disclosure and the performance of companies listed on The Stock Exchange of Thailand SET100 group. The information was collected from the notes to the financial statements annual registration statements (Form 56-1) and annual reports from 2016 to 2020 of 68 companies. Data were analyzed by using descriptive statistics such as mean standard deviation percentage and inferences statistics include Multiple Regression Analysis. The study results found that the social information disclosure on consumer responsibility is in line with Return on Equity (ROE). The disclosure on innovation and innovation dissemination from social responsibility practices correlates in the negative direction to Return on Equity (ROE). In addition the disclosure on anti-corruption was inversely related to Return on Assets (ROA). On the impact of corporate governance on the size of the Board of Directors and the shareholding proportion of the major shareholders there is a negative correlation between social information disclosure on anti-corruption and Rate of Return on Assets (ROA). There is a negative correlation between the proportion of independent directors and social information disclosure on innovation and innovation dissemination from social responsibility practices and Return on Assets (ROA). There is a positive correlation between the percentage of shares held by management and directors and social information disclosure on coporate governance and environmental management and Return on Assets (ROA). There is a negative correlation between the percentage of shares held by management and directors & the position merging of Managing Director and Chairman of the Board and social information disclosure on human right records and Return on Assets (ROA). There is a positive correlation between the merging of the Managing Director & Chairman of the Board and social information disclosure on consumer responsibility and Return on Assets (ROA). There is a positive correlation between size of the board of directors & the shareholding proportion of the major shareholders and social information disclosure on human right records and Rate of Return on Equity (ROE). There is a positive correlation between size of the board of directors the proportion of independent directors shareholding percentage of major shareholders and the position merging of Managing Director and Chairman of the Board and social information disclosure on consumer responsibility and Rate of Return on Equity (ROE). There is a negative correlation between size of the board of directors the proportion of independent directors and the shareholding proportion of the major shareholders and social information disclosure on innovation and innovation dissemination from social responsibility practices and Rate of Return on Equity (ROE). There is a negative correlation between shareholding proportion of executives & directors and social information disclosure on human right records and innovation and innovation dissemination from social responsibility practices and Rate of Return on Equity (ROE). There is a positive correlation between and the merging of the Managing Director & Chairman of the Board and social information disclosure of fair treatment of workers and Return on Equity (ROE). The correlations are statistically significant at 0.01 and 0.05 levels.

This thesis presents improving power quality in power distribution system with integration of photovoltaic energy distributed generation having objectives to improve power quality in distribution system model of voltage sag and voltage swell in distribution system model of power loss in distribution system application of mathematical model model of power generation by using solar energy and distributed generation connection technique simulation. In this thesis the power flow was tested with Newton-Raphson algorithm joining with mathematical model. The case study was done by reduction of power loss in distribution system by using techniques of connection of distributed generation joining with model of distribution system 33 bus. The case study about improvement of voltage sag and voltage swell in distribution system used connection techniques of distributed generation joining with model of distribution system 69 bus. The study found that technique of connection of distributed generation that was presented could reduce power loss and showed the percentage of improvement of voltage sag and voltage swell in distribution system especially voltage sag case according to IEEE 1159-1995 standard. This thesis showed that severity level of voltage sag depended on the size and duration of each distribution system model situation by photovoltaic energy distributed generation can reduce voltage sag.