The results revealed that the manager๛s opinions towards operation of quality control and inspection of auto-parts at a high level were lineworkers in car accessory production plant and other production plant. The opinions of the office workers towards operation of quality control and inspection of auto parts at a high level were lineworkers in car body production plant car accessory production plant and other production plant. When comparing the operation level of quality control and inspection of plants classified by types of vendors it was found that there was a significant difference at .05 level. The collected data were analyzed by SPSS program into percentage mean standard deviation t-test one-way ANOVA and multiple comparison.

The objective of this research is to reduce waste in the production ceramics of Dadear Ceramics Factory in Lampang Province. The 7 quality control tools (7 QC Tools) were implemented including Check sheet Graph Pareto diagram and Fishbone diagram were used in analyze problem and solve the problems. It was found that most of the wastes come from burning ceramics process. The kilns and wheelbarrow has been used for a long time furthermore the equipment and parts were damaged from lack of maintenance. The non-standard of product arrangement method into the furnace were the cause of waste. Thus the researcher were improve wheelbarrow into the kilns and design a fixture to help worker to product arrangement. The results of the research which geathering data from quality inspection department. Then comparing data before the improvement (between September to December 2013) and after the improvement (between November 2014 to February 2015) the wastes are reduced from 8.97% to 0.29%. The result of improving is very efficiency because it can reduce the wastes to 8.68%.

The purpose of the study was to scrutinize patterns and levels of environmental accounting disclosure of listed companies in eight industries in the Stock Exchange of Thailand. The research applied documentary research methodology and descriptive statistics including percentage distribution and Correlation analysis using Chi – Square at Statistical significance at the 0.05 level. The results of the study showed that five among eight industries including agro- and food industry consumer goods industry industrial goods industry real estate and construction industry and resources industry disclosed their environmental accountings at level 2; specific but not quantitatively measurable. However each company paid the highest attention to the environmental management systems because of its prominent requirements. As for the other three industries which were finance industry service industry and technology industry disclosed their environmental accountings at level 0; no environmental accountings disclosure since they paid limited interest to the environmental accounting during 2009 and 2012. In terms of the relationship between the entrepreneur and the environmental accounting disclosure it was found that the entrepreneur’s five aspects such as the business operational period paid paid-up registered capital total assets total liabilities and total revenues were significantly related at the disclosed level of 0-3.

The research aims to study the Conditions and Problems of Internal Educational Quality Assurance in Rajamangala University of Technology Phra Nakhon. The sample population included 320 staffts from RMUTP. The questionnaire was a research instrument. Analysis statistics was done by percentage arithmetic means standard deviation and frequency. The research results can be summarized as follows: 1. Overall Conditions and Problems of Internal Educational Quality Assurance in Rajamangala University of Technology Phra Nakhon was highly rated. 2. Problems and obstacles encountered in the implementation of quality assurance which are related to standards such as the quality of graduates standards of research productive standard of service standards Institute and Personnel Development. The problem in preservation of cultural standards standard curriculum and academic and standards of quality assurance is not found in the operation.