This research aims to study causal factors affecting the performance of the Thai fruit wholesaling. The objectives were to 1) study the level of focus on entrepreneurial orientation value creation service innovation and business performance of Thai fruit wholesalers in Talaad Thai Pathum Thani Province 2) to create and test the structural equation model of the entrepreneurial orientation value creation service innovation and business performance of Thai fruit wholesalers in Talaad Thai Pathum Thani Province 3) to study the direct effect and indirect effect of entrepreneurial orientation value creation and service innovation influencing the business performance of Thai fruit wholesalers in Talaad Thai Pathum Thani Province. The sample group used in this research consisted of 600 Thai fruit wholesalers in Talaad Thai Khlong Nueng Subdistrict Khlong Luang District Pathum Thani Province. The instrument used for the data collection was a questionnaire using accidental sampling. Descriptive statistics such as frequency percentage mean standard deviation and inferential statistics such as correlation coefficient (r) and structural equation model (SEM) were used to evaluate the data. The research results revealed that the elements of the entrepreneurial orientation factors value creation service innovation and business performance were on average at the highest level. When testing the relationship between every element in the entrepreneurial orientation factor value creation service innovation and the business performance were found to have a statistically significant relationship. In the analysis of the structural equation model (SEM) it was found that service innovation was directly influenced by entrepreneurial orientation with a statistical significance of 0.01 with a coefficient of 0.877 and 77 percent of causal variables were predicted. The business performance was directly influenced by an entrepreneurial orientation value creation and service innovation with 0.92 -0.49 and 0.49 respectively indirectly influenced by entrepreneurial orientation with -0.064. The highest total effect on entrepreneurial orientation was 0.880. The entrepreneurial orientation and service innovation had a significant impact on business performance at 0.01 and had predictive coefficients of 78% and 85% respectively.

This research aims to study the influences of sustainability management of environmental social and governance on sustainable corporate finance of the listed companies in the Stock Exchange of Thailand including 1) the listed companies which have been selected to continuously get the Thailand Sustainability Investment award all of 29 companies and 2) the listed companies which have been selected to discontinuously get the Thailand Sustainability Investment award all of 17 companies for 6 years from 2015 to 2018. This research is the mixed method research in both the Quantitative Research by using Descriptive Statistic Analysis Comparison of means Analysis Correlation Coefficient Analysis and Panel Data Regression Analysis with Hausman Test and the Qualitative Research by in-depth interview with 5 persons of the management of the Thailand Sustainability Investment awarded companies. The research results revealed that in continued Thailand Sustainability Investment awarded companies the sustainability management of Environmental has negatively statistically significantly influenced the sustainable corporate finance by making Debt to Assets (DAR) to decrease and positively statistically significantly influenced it by making Market Value (TBQ) Return on Equity (ROE) and Return on Assets (ROA) to increase. In discontinued Thailand Sustainability Investment awarded companies it found that the sustainability management of Social has negatively statistically significantly influenced sustainable finance by making Debt to Assets (DAR) to decrease and the sustainability management of governance has positively statistically significantly influenced sustainable corporate finance by making Market Value (TBQ) Return on Assets (ROA) and Return on Equity (ROE) to increase.

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.

The objectives of this research were to 1) study attitudes and consumption behavior of clean food for health 2) compare personal factors with consumption behavior 3) compare personal factors with consumption attitudes and 4) study attitudes affecting consumption behavior. The sample group was the population of Bangkok Province. Used in the study: 740 people. The questionnaire was used as a research tool. The data were analyzed by frequency percentage mean standard deviation. T-value test Analysis of one-way ANOVA and multiple regression analysis. The research results were found that: attitudes towards the consumption of clean food for health during the Covid-19 epidemic situation was at a high level. Clean food for health consumption behavior during the Covid-19 epidemic situation was at a high level.Individual factors including gender education and status had different attitudes towards healthy food consumption. During the Covid-19 epidemic situation the difference was statistically significant at the .05 level Individual factors including gender education income occupation and status had different healthy clean food consumption behaviors during the Covid-19 epidemic with statistical significance at the .05 level. Attitudes had a statistically significant effect on healthy food consumption during the Covid-19 epidemic at .05 level.

This paper presents the design of a power harvester for passive RFID Tags. An impedance matching circuit chooses a high-pass L network inserted between the antenna and rectifier circuit to maximize the power transferred to Tags using an impedance transformation technique. A simple circuit including only a shunt inductance was selected as a matching. The rectifier utilizes a Self-Vth-Cancellation (SVC) circuit is an archived self-threshold voltage cancellation and self-power regulation function with a simple circuit design. An antenna is modeled as an RF source with a series impedance Zs of 50Ω while the rectifier is modeled as a load impedance ZL which is estimated from the process and design parameters of the NMOS and PMOS transistors used in the SVC rectifier. As the combined circuit was simulated using input in the UHF band of 953 MHz and the devices’ model of the 0.35μm CMOS technology. The simulation results were compared with the single-stage rectifier of the SVC technique in the issue of the Power Conversion Efficiency (PCE). The achieved DC output of the rectifier yields the power conversion efficiency of 43.7% at input RF power -10.22dBm while a DC output voltage of around 643.8mV and a current load of 64.4μA.