The objective of this research is to study the companies listed on the Stock Exchange of Thailand Property and Construction Group on the relationship between corporate governance; namely the percentage of shares held by executives proportion of independent directors size of the board of directors management responsibilities of the chairman and the proportion of attendance at board meetings and 1) the operating result i.e. the return on total assets return on equity return on sales and earnings per share and 2) tax planning including the ratio of tax expenses to accounting profits before income tax and tax rate per total asset. The secondary data collected from the financial statements and the registration statement (Form 56-1) from year 2014 to 2018 in total of 71 companies is analyzed using descriptive statistics including mean and standard deviation and inferential statistics such as correlation analysis and multiple regression analysis. The research results showed that corporate governance including the shareholding percentage held by management management responsibilities of the chairman and the proportion of attendance at the Board meetings has a positive relationship with tax planning (Tax rate to total assets) with statistical significance at the level of 0.01 and 0.05. There is also a positive relationship between the operating results including the return on total assets and tax planning (Tax rate to total assets) with statistical significance of 0.01.

The purpose of this research is to study the relationship of corporate governance including corporate governance scores business size number of committees of the Board of Directors the proportion of independent directors to the total number of directors the number of meetings of the Board of Directors per year to operating results including gross margin net profit margin return on total assets return on equity ratio. The data was collected from the financial statements and the annual report form (Form 56-1) during the period 2013 – 2017 of 22 transportation and logistics service industry groups which are listed companies in the Stock Exchange of Thailand. Descriptive statistics correlation statistics and multiple regression equations were used in data analysis. The study indicated that corporate governance including the corporate governance score and number of committees of the Board of Directors and the number of meetings of the Board of Directors per year Related to the operating results including gross margin net profit margin and return on equity at a 95% confidence level.

This research aims to study the relationship between profitability which included gross margin operating margin net profit margin return on assets return on equity and earnings per share and price to earnings ratio and dividend yield. The data were collected from financial statements and the annual reports of the companies listed on the Stock Exchange of Thailand (SET100). The top three companies selected should yield a maximum registered capital of each business category from the 1st January to the 31st of December during 2012 and 2015. 20 companies were chosen. The statistics used in the data analysis were descriptive and analyzed by arithmetic mean maximum minimum Standard Deviation and Pearson Correlation Coefficients to describe the characteristics of the collected data. The results of the study revealed that profitability gained from the gross margin operating margin net profit margin return on assets and return on equity. The earnings per share ratio were related to the price to earnings ratio and dividend yield at the reliability level of 95% and 99%.

The purposes of this research were to study attitudes towards work organizational atmosphere and relationship between attitudes towards work organizational atmosphere and work participation of the Government Lottery Office employees. The research sample consisted of 260 Government Lottery Office employees drawn from probability sampling and simple random sampling. The statistics used for data analysis were frequency percentage mean standard deviation and Pearson product moment correlation coefficient. The study results indicated that the Government Lottery Office employees’ attitude was at a high level. When considering each aspect it was found that attitude regarding work performance had the highest average value and work participation was also at high level. It was found that accepting assigned responsibilities had the highest average value. The results of the hypothesis testing revealed that in the overall the attitudes towards all aspects and the organizational atmosphere positively correlated with the Lottery Office employees’ work participation statistically significant at the 0.01 level.

This research aimed to study the relationship between financial ratios of operating efficiency and profitability of listed companies on the Stock Exchange of Thailand. Data was collected from the financial statements of the real estate and construction groups from 2015 to 2019. The data were analyzed using descriptive statistics such as frequency percentage mean and standard deviation. The inferential statistics were Pearsons Correlation Coefficient and Multiple Regression Analysis. The results of the study found that 1. operating cash flow activities positively correlated with the return on asset 2. the debt to asset ratio was negatively correlated with the gross profit margin net profit margin return on asset and return on equity 3. average collection period was negatively correlated with the gross profit margin and net profit margin 4. inventory turnover had a negative correlation with the return on asset 5. the total asset turnover was positively correlated with the net profit margin return on asset and return on equity with the statistical significance at a level of 0.05.