The research objectives were to study the correlation between the social information disclosure and the performance and the impact of corporate governance on the correlation between the social information disclosure and the performance of companies listed on The Stock Exchange of Thailand SET100 group. The information was collected from the notes to the financial statements annual registration statements (Form 56-1) and annual reports from 2016 to 2020 of 68 companies. Data were analyzed by using descriptive statistics such as mean standard deviation percentage and inferences statistics include Multiple Regression Analysis. The study results found that the social information disclosure on consumer responsibility is in line with Return on Equity (ROE). The disclosure on innovation and innovation dissemination from social responsibility practices correlates in the negative direction to Return on Equity (ROE). In addition the disclosure on anti-corruption was inversely related to Return on Assets (ROA). On the impact of corporate governance on the size of the Board of Directors and the shareholding proportion of the major shareholders there is a negative correlation between social information disclosure on anti-corruption and Rate of Return on Assets (ROA). There is a negative correlation between the proportion of independent directors and social information disclosure on innovation and innovation dissemination from social responsibility practices and Return on Assets (ROA). There is a positive correlation between the percentage of shares held by management and directors and social information disclosure on coporate governance and environmental management and Return on Assets (ROA). There is a negative correlation between the percentage of shares held by management and directors & the position merging of Managing Director and Chairman of the Board and social information disclosure on human right records and Return on Assets (ROA). There is a positive correlation between the merging of the Managing Director & Chairman of the Board and social information disclosure on consumer responsibility and Return on Assets (ROA). There is a positive correlation between size of the board of directors & the shareholding proportion of the major shareholders and social information disclosure on human right records and Rate of Return on Equity (ROE). There is a positive correlation between size of the board of directors the proportion of independent directors shareholding percentage of major shareholders and the position merging of Managing Director and Chairman of the Board and social information disclosure on consumer responsibility and Rate of Return on Equity (ROE). There is a negative correlation between size of the board of directors the proportion of independent directors and the shareholding proportion of the major shareholders and social information disclosure on innovation and innovation dissemination from social responsibility practices and Rate of Return on Equity (ROE). There is a negative correlation between shareholding proportion of executives & directors and social information disclosure on human right records and innovation and innovation dissemination from social responsibility practices and Rate of Return on Equity (ROE). There is a positive correlation between and the merging of the Managing Director & Chairman of the Board and social information disclosure of fair treatment of workers and Return on Equity (ROE). The correlations are statistically significant at 0.01 and 0.05 levels.

This research aimed to study the optimum factors affecting the quality of gold plating process to enhance OTOP knife products of Ban Mai knife forgers village. This study focused on application of AISI 5160 steel and the 24k gold plating process.In the experiment three samples of plating currents were observed; 10 12 and 14 volts each at 30 60 90 120 150 seconds and 180 seconds respectively. The study found that applying the electric currents in gold plating at 12 volts for 120 seconds gave the best results for the gold color and thickness by giving the thickness of the gold surface at 33.82 micron and the color value between L*=88.72 a*=4.45 and b*=78.58. Moreover the gold dispersion was consistent throughout the workpiece. From applying the electric currents in gold plating at 10 volts it lessened the thickness of the gold plating which made the gold plating look uneven. From applying the electric currents in gold plating at 14 volts it increased the thickness of the gold plating which resulted in a dull or burned finish from over-plating. In comparison the cost of the knife before plating with gold costs only 30 baht per piece while the cost of the knife after plating with gold costs 99 baht per piece. In conclusion the daily sales of a product increase from 50-60 items per day to 60-75 items per day which also resulted in increased revenue and profitability from 1500-1800 baht per day to 5940-7425 baht per day on average.

The research is aimed to 1) study the level and priority of the factors affecting the delay of construction projects and 2) provide suggestions in relation to the prevention of such delay. The sample is 520 people who were working for different construction projects. They were project managers project engineers field engineers and foremen. The data were collected by using online questionnaires and analyzed to find out mean standard deviation (SD) frequency correlation coefficient and confirmatory factor analysis. The findings reveal two significant aspects. First those who were working in the construction projects concerned about the factors affecting the delay of the projects at high level. Respectively the factors related to design resource external factors and others were taken into consideration. The factor regarding to work performance is regarded affecting the project delay at the highest level. Other factors i.e. the design external factors and others and resource have the affects at the lower level. Second the work-related factors can help prevent the project delay. In other words the construction plan and methods as well as the project management should be well-implemented in accordance with the design. The construction site should be on inspection considering its drawing. Regarding the external factors and others the public voices of those living around the construction site should be taken into consideration. Furthermore the effective use of the resources can be carried out by sufficiently preparing all materials tools and equipment for constructing any project effectively as a consequence.

The aim of this study is developed of alkali activated high calcium fly ash to use as cementitious material to replace Portland cement. The mixture of mortar made from fly ash and sodium hydroxide solution (NaOH) was used to activate strength at concentrations of 2 4 6 and 8 molars. Superplasticizer was used to control the flow of mortar in the rage of 105 – 110. The compressive strength of mortar was determined at 7 28 45 and 60 days. The acid resistance of mortars due to sulfuric at a concentration of 3% were also investigated. The results showed the mortar made from high calcium fly ash with sodium hydroxide of 6 molar obtained the highest compressive strength which could be developed compressive strength up to 189 ksc at 60 days. For the acid resistance of mortar it was found that the of use 6 molar of NaOH activated high calcium fly ash binder had the least weight loss due to sulfuric acid attack.

This research aims to study the ant repellent effects of the crude ethanolic extracts from 7 herbs; Piper nigrum Linn. Alpinia galanga (L.) Willd Ocimum basilicum L. Cymbopogon citratus Stapf Citrus aurantiifolia (Christm.) Swingle Citrus hystrix DC and Stemona collinsae Craib. Whatman filter paper was dipped with each concentration of the crude ethanolic extracts (0.625 1.25 2.5 and 5 % w/v) and placing the bait on a treated filter paper. The experiments were conducted in the natural. The numbers of weaver ants were recorded at 0 - 30 minutes. From the results the crude ethanolic extracts at 5% w/v of A. galanga was the most effective for repellent the ant (repellent rate; %R = 94.72 ± 2.39) followed with C. citratus (%R = 89.45 ± 3.85) S. collinsae (%R = 82.92 ± 4.47) and P.nigrum (%R = 81.20 ± 5.92). The repellent rates of those crude ethanolic extracts were significantly difference from distilled water which use for the negative control (P < 0.05). The crude ethanolic extract of A. galanga at concentration 5% w/v was prepared as spray cream chalk and powder. At 30 minutes of the observation the ethanolic extracts of A. galanga spray was the best ant repellent effect (%R = 100). The result from questionnaires reveals that a spray preparation was the more satisfaction for the using ant repellent products.