The objectives of this research were (1) To study the Influence of perceived justice on customer trust of Asita Eco Resort (2) To study the Influence of perceived justice and customer trust on customer satisfaction of Asita Eco Resort (3) To study the Influence of customer trust and satisfaction on customer word of mouth of Asita Eco Resort (4) To study the Influence of customer trust and satisfaction on customer revisited of Asita Eco Resort (5) To validate a causal relationship model of influence of perceived justice on trust satisfaction word of mouth and revisited of Asita Eco Resort’s customers.

The objective of this research is to study how rotation speeds affect mechanical properties with friction welding between semi-solid metal 7075 aluminum alloys and semi-solid metal 356 aluminum alloys. The factor of interest is rotation speeds with different conditions at 800 1000 1200 1400 and 1600 rpm respectively. 1.8 millimeter for burn of length 30 seconds for welding time and clockwise rotation are set as a control constant condition for the entire experiment. After friction welding we found that different rotation speeds significantly affected mechanical properties of these alloys. At rotation speed 1400 rpm the maximum tensile strength is 122.24 MPa and the maximum hardness in welded zone is 140.5 HV. The microstructure size is 2.250 µm long and 2.144 µm wide. Its size in welded zone is practically small because of friction force. Moreover this friction force causes the mixture of MgZn2 and Mg2Si in welded zone.

The objectives of this research were (1) To study the influence of supervisor’s transformational leadership and organizational justice on job satisfaction of employees of BAAC head office; (2) To study the influence of supervisor’s transformational leadership organizational justice and job satisfaction on organizational commitment of employees of BAAC head office. (3) To validate the causal relationship model of supervisor’s transformational leadership and organizational justice on job satisfaction and the organizational commitment of employees of BAAC head office with empirical data. The variables in this investigation consisted of the following: supervisor’s transformational leadership and organizational justice consist as the independent variables; job satisfaction as mediating variable; and organizational commitment as dependent variable. The researcher used quantitative methods which involved empirical research. The instrument of research was a questionnaire used to collect data from 399 employees from BAAC head office. The statistics used in data analysis were frequency mean percentage and structural equation model analysis. It was found that the model was consistent with the empirical data. Goodness of fit measures were found to be Chi-square (2) = 122.230; Degree of freedom = 150; p-value = 0.952; Relative Chi-square (2/df) = 0.815; Goodness of Fit Index (GFI) = 0.980; Adjusted Goodness of Fit Index (AGFI) = 0.938; Comparative Fit Index (CFI) = 1.000; Standardized Root Mean Square Residual (SRMR) = 0.020 and Root Mean Square Error of Approximation (RMSEA) = 0.000. It was also found that: 1. Supervisor’s transformational leadership had positive and direct influence on employee’s job satisfaction. 2. Supervisor’s transformational leadership had positive and direct influence on organizational commitment. 3. Organizational justice in the dimension of distributive justice had positive and direct influence on job satisfaction. 4. Organizational justice in the dimension procedural justice had positive and direct influence on job satisfaction. 5. Organizational justice in the dimension of distributive justice had positive and direct influence on organizational commitment. 6. Job satisfaction had positive and direct influence on organizational commitment. Based on these findings the researcher recommends that BAAC head office more fully focus on supervisor’s transformational leadership organizational justice in the dimensions of distributive justice and procedural justice to deepen the job satisfaction and organizational commitment.

The objectives of this research were (1) To study the influence of the service quality which consisted of the dimensions of tangible reliability responsiveness assurance and empathy on customer trust; (2) To study the influence of the service quality and customer trust on customer satisfaction; (3) To study the influence of customer trust and satisfaction on the positive word of mouth; (4) To study the influence of customer trust and satisfaction on customer revisit and (5) To validate the causal relationship model of the influence of service quality on trust customer satisfaction customer positive word of mouth and revisit of Rama II Hospital with empirical data. The variables in this investigation consisted of the following; service quality which consisted of the dimensions of (1) tangible; (2) reliability (3) responsiveness (4) assurance and (5) empathy as the independent variable; customer trust and satisfaction as mediating variables and customer positive word of mouth and revisit as dependent variables.

The objectives of this research were (1) To study the influence of the after sales service quality which consisted of the dimensions of tangible reliability responsiveness assurance and empathy on customer trust; (2) To study the influence of the aftersales service quality and customer trust on customer satisfaction; (3) To study the influence of customer trust and satisfaction on customer loyalty and (4) To validate the causal relationship model of the influence of aftersales service quality on trust customer satisfaction and customer loyalty of medical’s equipment business with empirical data. The variables in this investigation consisted of the following; aftersales service quality which consisted of the dimensions of (1) tangible; (2) reliability; (3) responsiveness ;(4) assurance and (5) empathy as the independent variable; customer trust and satisfaction as mediating variables and customer loyalty as dependent variable.