The research objective was to study social responsibility corporate governance mechanisms and audit quality that affect the operations of companies listed on the Stock Exchange of Thailand. The population used in this study was 76 companies listed on the Stock Exchange of Thailand. The annual financial data was from year 2016 to 2020. The data were analyzed using descriptive statistics such as mean standard deviation percentage and inferential statistics such as correlation analysis (Pearsons Correlation Coefficient) and Multiple Regression Analysis. The study found that the social responsibility on consumer responsibility (PRCI) was positively correlated with market share (MS). Environmental stewardship (EN) was positively correlated with Return on Assets (ROA) and company value (NVP). Innovative and outreach (CSRI) is negatively correlated with Return on Assets (ROA) and company value (NVP). Community or social development (CID) was negatively correlated with Return on Assets (ROA) and company value (NVP). Fair operation (SFOP) was negatively correlated with market share (MS). Anti-corruption (AC) was negatively correlated with market share (MS). Institutional investor shareholding (IS) was positively correlated with Return on Assets (ROA). Number of meetings (NBM) was negatively correlated with Return on Assets (ROA) and market share (MS). Institutional investor shareholding (IS) was negatively correlated with company value (NVP). Audit firm size (size) was positively correlated with Return on Assets (ROA) and company value (NVP) but negatively correlated with market share (MS). Compensation paid by auditors to LN clients (compensation) was positively correlated with company value (NVP).

The objectives of this research were 1) to study factors that promote and support entrepreneurial skill building for students of the Faculty of Liberal Arts. Rajamangala University of Technology Phra Nakhon 2) Develop a learning model to enhance entrepreneurial capacity For students of the Faculty of Arts Rajamangala University of Technology Phra Nakhon which summarizes the results of the study as follows: The results of a study of elements and indicators of entrepreneurial competency for setting goals developing and evaluating student competency. with the research process to analyze the exploratory factor analysis (EFA) sample of teachers Faculty of Arts Rajamangala University of Technology Phra Nakhon found that the performance components of Entrepreneurship of students of the Faculty of Liberal Arts Rajamangala University of Technology Phra Nakhon consists of 4 competencies: (1) Competency in promoting holistic thinking: 14 indicators; (2) Evidence-based competency: 8 indicators; (3) Empowerment competence. and quality of care with 11 indicators and (4) ethical competency with 8 indicators of which 41 performance indicators out of a total of 42 indicators were accurate to the actual condition.

This research aims to 1) to study the personal factors of Thai and foreign tourists towards their buying decision making behavior in spa products; 2) to study the current situation of buying decision making behavior for the development spa products entrepreneurs to drive the strategy of Thailand 4.0 and 3) to create behavior patterns of purchasing decisions to develop spa product entrepreneurs driving the strategy of Thailand 4.0. The research used mixed methods qualitative and quantitative. The researcher applied qualitative methods by interviewing 21 selected key informants. The data obtained from qualitative was used to construct the questionnaires which were used to gather quantitative data and analyzed by multiple classifications. The researcher determined the sample size to represent the population using the G*Power program. The research tools used in this research were 1) an in-depth interview and closed-ended questionnaires for qualitative research and 2) a questionnaire obtained from the qualitative research using the Delphi technique as a reviewed questionnaire for quantitative research. The questionnaires were distributed to the 305 samples. The results of the hypothesis testing of personal data were as follows: gender nationality age education level source of information that brought them to Phra Nakhon Si Ayutthaya Province and participants traveling to Phra Nakhon Si Ayutthaya Province are the factors that affect buying decision making behavior spa product of model buying decision making behavior for the development spa products entrepreneurs to drive the strategy of Thailand 4.0 strategy. The result of hypothesis testing factors affect the buying decision making behavior for spa products come into 6 factors are local identity product usage buy as a souvenir repeated buying information from reliable sources and the interpersonal factor of entrepreneurs or salespeople. All of these results comply with the assumptions.

The research objective is to study the behavior and community perceptions related to Corporate Social Responsibility (CSR) activities of WHA Industrial Zone Saraburi. The population is the 400 samples from the communities surrounding WHA Industrial Estate Saraburi consisting of four sub-districts namely Nong Pla Mo Sub-district Nong Pling Sub-district Bua Loi Sub-district and Kochasit Sub-district Nong Khae District Saraburi Province. The questionnaire was used as a tool to collect data. The statistics used were descriptive statistics including frequency percentage mean standard deviation. Inferential statistics were also used. The results showed that most of the respondents were female aged 20-30 years with married status a bachelors degree holder or equivalent a private company employee with the average monthly income of 20001 - 30000 baht and 4-6 family members. On the community behavior it was found that the aspect with the highest average of the community behavior towards Corporate Social Responsibility (CSR) activities of the sample group was acceptance with the mean of 3.55. On the communitys perception of Corporate Social Responsibility (CSR) activities it was found that the aspect with the highest average of the communitys perception of Corporate Social Responsibility (CSR) activities of the sample group was the information perception of CSR activities with the mean of 3.50. The hypothesis testing results revealed that the communitys behavior and perception were highly positively correlated with the CSR activities of WHA Industrial Zone Saraburi with statistical significance at 0.01.

According to the research entitled “the innovative engine prototype powered by diesel and LPG as fuel for agricultural” in 2019 the problems found while using the engine were as follows: the accumulated heat in the auxiliary combustion chamber reached 300 C in case of gasoline engine use and a lot of black smoke in the exhaust was found at the speed higher than 1800 rpm in case of a diesel engine use. In order to extend the research and solve two foresaid problems the objectives of this study were 1) to develop an auxiliary combustion chamber for cooling 2) to develop a scalable gas-air mixing device and 3) to compare diesel and LPG consumption rates by modifying a small diesel engine Yanmar version TF120DI to install LPG fuel systems and ignition system. In addition a gas-air mixing device was modified while an auxiliary combustion chamber was developed to reduce the compression ratio to the same level as the gasoline engine for replacing the position of the original diesel fuel injector. This method could support LPG fueling only whose function was characterized by the function of a gasoline engine. The auxiliary combustion chamber could be removed and then installed a diesel injector to return using diesel fuel. From an experiment to compare the modified engine operating as a gasoline engine it was found that the temperature of the auxiliary combustion chamber and the temperature of the engine cylinder head of Honda GX160 were measured at the maximum speed of 182 C and 186 C respectively. It was found that carbon monoxide content was 0.41 % and 1315 ppm hydrocarbons. When used as a diesel engine it was found that the black smoke was exhausted at 1.5 % which was similar to the diesel engine before the modification. From the experiment of using the power engine for pumping water with an Irrigation propeller pump with the diameter of 8 inch at a constant engine speed of 1000 rpm it was found that the average diesel usage was 0.65 kg/hr or about 0.77 L/hr with the cost of 21.00 Baht/hr and if using LPG as fuel the average LPG consumption was 0.57 kg/hr with the cost of 13.71 Baht/hr which could save up to 34.71 % of costs.