This study was aimed to 1) explore opinions on organizational culture 2) compare job satisfaction 3) compare the influence of organizational culture on job satisfaction of support personnel at Rajamangala University of Technology Phra Nakhon. This is quantitative research which its sample was 209 support staff at Rajamangala University of Technology Phra Nakhon obtained through proportional stratified random sampling. The data were collected by questionnaire and analyzed by frequency percentage mean standard deviation t-test F-test and Pearson product moment correlation coefficient. The research revealed as follows. 1 ) Rajamangala University of Technology Phra Nakhon support staffs highly demonstrated opinions on organizational culture and were highly satisfied with their work. 2 ) Rajamangala University of Technology Phra Nakhon support staffs’ work satisfaction with different genders and salary base levels were 0.05 statically different. 3) The satisfaction of Rajamangala University of Technology Phra Nakhon support staffs were 0.05 statically satisfied with 1) success aspect 2) personal aspect 3) self - actualization aspect had the overall satisfaction at the 0.05 level of significance. As for the organizational culture related to affiliation did not influence the satisfaction of the support personnel at Rajamangala University of Technology Phra Nakhon.

The purpose of this research was to explore the organizational commitment and compare factors affecting the organizational commitment as well as study the relationship of the factors affecting the organizational commitment of Rajamangala University of Technology Phra Nakhon personnel. 303 samples were asked to respond to a questionnaire which was used as a research tool. Statistics used for the data analysis were percentage mean One-Way ANOVA and significance level at 0.05. The results of this research revealed that the overall personnel of Rajamangala University of Technology Phranakhon were organizationally committed in good level as well as their work life quality. In addition the level of organizational commitment of the personnel with dissimilarities in terms of the age marital status educational level work experience were 0.05 statistically different. In addition to that the overall job characteristics were positively correlated with overall organizational commitment and work experience. In the Operate overall this was positively associated with the overall organizational commitment.

The purpose of this descriptive study is to behaviors perceived communication effectiveness and the relationship between communication behaviors and perceived intra-organizational communication effectiveness using 70 sets of closed-end questionnaires as a tool for data collection from employees at a selected independent organization. Statistical methods for data analysis included percentage mean( μ ) standard deviation( σ) and correlation coefficient. The results of the study indicate that most of the survey respondents ae male aged 51 years and older with a marital status. The education level is bachelor’s degree. In respect of information perception intra-organization matters are the main priority among employees with a focus on the information within the organizational unit they belong to or benefits related to them. With regard to communication frequency and channels internal email is mainly used followed by Facebook and Line respectively due to restricted access to communication tools at work. On aspect of intra-organizational communication efficiency straight-to-the-point communication speed and perception are found mainly with the matters within the organization or the work unit the employees belong to. When considering the credibility of the information the emphasis is placed on the content of the order coming from within the organization substantially affecting the communication efficiency. Thus there is the close relationship between information perception and intra-organizational communication efficiency as the correlation is significant at 0.05 level. It can be said that employees at this organization pay considerable attention to the information within organization.

The study aims to study the change leadership that affects the organizational culture and work efficiency of the staffs at the operational level and to study the good governance principles that affect the organizational culture and work efficiency of operational staffs at Commercial Concrete Production Business Unit. The population used in the study is 200 operating staffs at Commercial Concrete Production Business Unit using questionnaires for data collection. The data analysis is conducted using descriptive statistics and inferential statistics. The result indicates that change leadership affects organizational culture of operational staffs with statistical significance at 0.05 level. It can predict the organizational culture of operational staffs at 16.30 percent. Good governance principles affect the organizational culture of operational staffs with statistical significance at the level of 0.05. It can predict the organizational culture of operational staffs at 29.50 percent. Change leadership affects the operation efficiency of operational staffs with statistical significance at the level of 0.05. It can predict the work efficiency of operational staffs at 13.80 percent and good governance principles affect the work efficiency of operational staffs with statistical significance at the level of 0.05. It can predict the work efficiency of operational staffs at 28.70 percent.

The purpose of this research was to investigate the motivation of the personnel working in the Bureau of Supporting Industries Development Department of Industrial Promotion and to study the organizational commitment and the relationship between work motivations. The sample used in this study consisted of 59 personnel in the Bureau of Supporting Industries Development Department of Industrial Promotion. The author used Quantitative Approach by survey method using data collection by questionnaires. The collected data were analyzed by using the parameters: Percentage μ σ and . When analyzing data from the questionnaires it was found that most of respondents data was male. The age range was 51 years and over. They were mostly government officials most of whom had more than 26 years of work experience. Their salary ranged from 15001 to 20000 baht and most of them were motivated by motivation factors in a high level. The motivation for supporting factors was moderate. The respondents organizational commitment variables were at a high level. When testing the motivation variables it was found that the variables that positively correlated with organizational commitment were job characteristics job responsibilities career path in Policy and Administration salaries and benefits interpersonal relationship and working environment.