Direct selling business has plays a vital role for generating national revenue towards Thailand economic for several decades. Particularly during last past decade direct selling business has been generating in the diversity size involved large medium and small business unites. This business attempts to win in national consumption markets by using the form of direct selling system for distribute of products and increase sale volume. Thus the objective of the research is attempts to study the quality of direct sales in particular supplement food products through the lens of independent distributor. The results of the study will used for developing of direct sale company service quality efficiency. Five point Likert scale and closed end questionnaires were used for collecting data from executives directors of 12 direct sale companies and 400 independent distributors. The data were interpreting by using percentage (%) Mean (x) and standard deviation (S.D). The inferential statistics represented by t - test and F-test. The research finding indicated that direct sales service quality management is the important factor that can be contributing business success. Considering in detail found that the relationship between service provider (direct sale company) and service receiver (independent distributor agency customer) have a most significantly important in among other service dimensions. Look through the company size dimension the large size company has pay attention on every service quality details. Despite the overall picture of direct sale companies in Thailand have providing promotional services to the independent distributor in order to meets the standards of the direct sale association development of Thailand. Addition the objective of this association is for enhance direct selling business standard simultaneously generated the confident of new comer businessmen and customer in direct sale business network. Hence promoting business development plan is requiring the expertise person who have been in this particular area of business to supervise of business outline under the framework of direct sale association development of Thailand Key words : The direct selling business

The study on perception towards service quality of Siam Kraft industry Company Limited was aimed to investigate and compare service quality perception of Siam Kraft Industry Company Limited. The survey was accomplished among 207 Siam Kraft industry Company Limited customers as the sample group. The questionnaire with the reliability value of 0.97 was administered as the instrument for collecting data which were analyzed by the frequency distribution percentage distribution standard deviation t-test One – Way ANOVA and Scheffe. In case of 0.05 statistical differences was found Least Significant Different method was applied to verify each pair. The results revealed: 1. According to the respondent’s’ general information 140 were females (68.60 %) 92 people aged ranging from 30 to 40 years old (44.45 %). 124 or 59.90 held bachelor’s degrees and 69 people or 33.33 % had 5 to ten years work experience. 2. The perception towards service quality of Siam Kraft industry Company Limited in the overall was relatively high. When looking into each aspect the first item was credit service followed by finance delivery processed products and marketing services respectively. 3. As for the respondents ‘general statuses different ages and work experiences did not perceive service quality of Siam Kraft industry Company Limited differently at 0.05. However males and females perceived different marketing service; and different educational levels perceived processed products differently at 0.05.

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 purpose of this study was to investigate the perceived service quality of QC Car Audio users and compare the quality of service provided by QC Car Audio stores classified by their demographic characteristics. The sample was 267 customers using the QC Car Audio service from January 2015 to January 2017. The statistics used for the data analysis included frequency percentage mean standard deviation and t-test was applied as well as the analysis of one-way ANOVA. The study found that the overall quality of QC Car Audio service provided by the customers was at the highest level. It was also found that the customers’ different gender age marital status education monthly income occupation and service location did not significantly vary in terms of the service quality perception towards QC Car Audio in the overall. When looking into each five aspects there were no significant differences. However different service locations yielded different service quality perception towards QC Car Audio at the .05 statistically significant.

The objectives of the study were to find the arrival rate of applicants who applied to study at Rajamangala of Technology Pra Nakhon North Bangkok Campus the service rate of admission officers and to analyze queuing system in order to improve the admission system. The sample was 1722 technical students who applied to study in 10 divisions in 2007 and 2008. The plication date was collected every 10 minutes in each one-hour period from 09.00 am. to 16.00 pm. For 6 days. The study found that the distribution of the number of applicants was Poisson distribution. The highest arrival rate 1.29 student/min was at the second period and the lowest arrival rate 0.06 students/min was at the sixth period. The Distribution of service time at each station was exponential distribution. The highest service rate 0.67 min/student or 1.49 students/min was at the second station entering data into a computer. Queuing analysis in this study was series network. The analysis found that the highest expected number of applicants in the system 150 student/hour was at the first station in the second period and in the sixth period there was almost none. The highest expected number of applicants in the queuing system107.40 student/hour was at the first station in the second period The highest expected waiting time in the system.1.92 min/student and in the queuing system 1.37 min/student were at the first station. The probabilities of none of applicants in the system at the first the second and the third station in the sixth period were high 0.97 0.95 and 0.98 respectively. The proper value of the expected number of applicants in the system set in this study was not more than 60 student/hour and not less than 30 student/hour. The proper value of the waiting time in the system was not more than 1 min/student and not less than 0.5 min/student for stations for stations with more than one servers. The analysis found that at the first station one more server should be added in the second the third and the forth period and one less server should be reduced in the sixth period.