This study investigates three different types of power plant include a trilateral cycle (TLC) subcritical organic Rankine cycle (ORC) and supercritical ORC power plant driven by geothermal heat source with mass flow rate 1 kg/s and temperature of 100๐C 110๐C and 120๐C. with 27 substances were examined as the working fluid of the power plant. While the net power output of 4.78 kW and 7.74 kW is obtained from the subcritical ORC with RC318 as its working fluid when the heat source temperature are at 100๐C and 110๐C respectively. Meanwhile the net power output of 11.85 kW is obtained from the subcritical ORC with R227ea as its working fluid when the heat source temperature is at 120๐C. The net power output of 5.64 kW and 9.16 kW are obtained from the supercritical ORC with R218 as its working fluid when the heat source temperature are at 100๐C and 110๐C respectively. Meanwhile the net power output of 12.88 kW is obtained from the supercritical ORC with R143a as its working fluid when the heat source temperature is at 120๐C. Furthermore the net power output of 7.96 kW 12.27 kW and 17.38 kW are obtained from the TLC plant with heptane as its working fluid when the heat source temperature are at 100๐C 110๐C and 120๐C respectively.

The objective of this research is to study the combustion characteristic of a low-pressure vertical port burner using computational fluid dynamics (CFD). The simulation model was created using Fluent 6.3 in 3D-model of the same size of the burner. The CFD results were verified by measuring the temperature around the burner head and a vessel. Moreover the results of conventional vertical port burner having the swirl angle of 90o and the inclination angle of 90o (CB-S90I90) and two swirl port burners (SB) being SB-S90I13 and SB-S30I90 were compared. The temperatures obtained from CFD and experiments were similar which the error was less than 9%. From the CFD’s results the temperature and heat flux of the SB-S90I13 burner were higher than those of the CB-S90I90 burner. The maximum temperature and heat flux of SB-S90I13 burner were 1445 K and 5291 W/m2 respectively. It was implied that the combustion characteristic and heat transfer to the vessel of SB-S90I13 burner was better than that of CB-S90I90 burner. It was resulted that the thermal efficiency of SB-S90I13 burner was better than that of CB-S90I90 burner which was the percentage energy saving of 6.93%.

The purpose of this study is to study the 1) Demographic factors affecting the knowledge about the sufficiency economy philosophy of those employed persons in Bangkok. 2) Demographic factors affecting the use of sufficiency economy philosophy in the life of the person employed in Bangkok. 3) The relationship between knowledge about sufficiency economy philosophy and the use of sufficiency economy philosophy in the life of the employed persons in Bangkok. The samples in this research were 540 the employed persons in Bangkok selected by multistage random sampling. The research instrument was test with 10 items and questionnaires of rating scales with 30 items. The statistics used to analyze the data including the number and percentage mean standard deviation t - test for independent sample One-Way ANOVA Scheffe’s test analysis and simple correlation coefficients were statistical method to analyze data. The research found that: 1) Most of the respondents were female aged less than 35 years single status education level Bachelors degree career employees to a private company. The average monthly income of less than 35000 baht Hometown Central region. Have knowledge of the sufficiency economy philosophy at a moderate level. The sufficiency economy philosophy is applied to life at a high level. 2) Demographic factors affecting knowledge of the sufficiency economy philosophy include gender age education level occupation and average monthly income. Comparison results vary statistically significantly at a significant level of 0.05. 3) Demographic factors affecting the use of sufficiency economy philosophy in the life of those employed in Bangkok include gender age marital status education level occupation and average monthly income. Comparison results vary statistically significantly at a significant level of 0.05 4) The relationship between knowledge about sufficiency economy philosophy and the use of sufficiency economy philosophy in the life of the employed persons in Bangkok. There was a relationship that was not statistically significant. At a significance level 0.05

The objective of this research to investigate Effect of Accounting Information System Efficiency in Thailand 4.0 on Sustainable Financial Report Quality . Data was collected from 202 accounting director in Thailand. The quantitative approach was applied by using questionnaire in data collection. Descriptive and inference statistics were used: percentage mean standard deviation Pearson correlation and multiply regression analysis. The results presented demographic characteristics of respondents were male aged between 41–50 years old had higher than bachelor’s degree. They marital status was mostly single closed to married. Most participants had work experience in audit filed more than 15 years and earned auditing revenue per month more than 90000 Baht in average. In addition the companies of most accounting director who answered the questionnaire had more capital 1000000000 baht earn more than 150000000 baht per year and most of whom have received awards of 148 people representing 73.30 percent The findings revealed that the accounting director as a whole at the highest level. When each aspect was considered found to be at the highest level were the internal control in accounting information systems efficiency of accounting information system accountant competencies and support of the management. The findings indicate that the internal control in accounting information systems efficiency of accounting information system and accountant competencies have a positive influence on sustainable financial report quality which were statistically significant at 0.05.

This study aimed to develop a homestay village for environmental conservation services. The study divided into 2 stages. The first stage was to study and survey general information and operations of the homestay villages for conservation tourism services. The second stage was to develop the homestay village for environmental conservation tourism services. The mixed methods were employed. The major findings revealed the following: 1. The developed homestay village for environmental conservation tourism services had 6 component’s: (1) Survey a study of document survey of community environment and tourism resources ; (2) Operation planning operation publicizing information to the village people organizing a training on an environmental conservation ; (3) Organization Setting; (4) Relations ; (5) Service welcoming to tourists tourists activities and nearby tourist activities ; and (6) Evolution assessing within the homestays and requesting for evolution from the Tourism Authority of Thailand. In confusion the developed homestay village for environmental conservation tourism services could develop knowledge attitude and behaviors in environmental conservation of the people with homestay service experiences. These people had awareness and responsibility in sustainably environmental conservation in the future.