The purposes of this research were : 1) to develop Web-Based Instruction (WBI) on Official Letters part of the Word Processing Applications Subject using Demonstration Technique; 2) to evaluate if the WBI meets Meguigans efficiency criterion; 3) to compare learning achievements of learners before and after studying by the developed WBI; and 4) to evaluate students’ performance after studying the developed WBI. The sampling group recruited with purposive sampling method were 20 second-year vocational certificate students who registered in the second semester of academic year 2012 majors in Business Computer at Bunharn-Jamsai Polytechnic College Suphanburi province. Applied research tools included one unit of WBI’s evaluation form pre-test and post-test learning achievement test and WBI post-test Students’ performance assessment form. Applied statistic tools included Meguigans efficiency value t-test mean and standard deviation (S.D.) Research findings showed that 1) the efficiency of developed WBI was 2.26 which higher than the Meguigans’s standard value at 1.00. 2) post-test learning achievement was statistically significant higher than pretest at .05 3) students’ post-test performance was at good level. We therefore could conclude that the developed WBI can be utilized as teaching material for students with different computer background.

The purposes of this study were: 1) to develop the model of a participatory learning process for conserving the forest-resources of communities around Doi-Khun-Tan National Park 2) to compare knowledge attitudes and behaviors of the samples’ in conserving the forest resources and 3) to study the satisfaction of participatory learning process. The sample selected by a purposive sampling consisted of 48 subjects representing the communities around the area of Doi Khun Tan. The instruments included all these: 1) an interview 2) a participatory learning process program for conserving the forest-resources the area of Doi Khun Tan National Park 3) a questionnaire about the knowledge attitude and behavior of conserving forest resources and 4) a questionnaire about their satisfaction with the program. The data elicitation was drawn from three sources: 1) interviews and brainstorming 2) the assessment of the knowledge attitudes behaviors by the questionnaire and 3) the assessment of the satisfaction with the participatory learning process by the questionnaire. The study revealed these findings: 1) the participatory learning process of model fell into 6 steps consisting of a) the analysis of communities key informants and literature reviews b) the implementation of the knowledge to conserve the forest resources c) the implementation of the attitude towards conserving the forest resources d) the implementation of the behaviors of conserving the forest resources e) the assessment of the participatory learning process and f) the evaluation of satisfaction with the program; 2) the subjects’ knowledge attitudes and behaviors regarding forest conservation at the boundary of Doi Khun Tan before and after the participatory learning process are statistically different at the significance level of .05; and 3) the level of their satisfaction with the participatory learning process was high.

The objectives of this research were 1) to study problem of joint learning for children with learning disabilities and 2) to develop a joint learning management model for children with learning disabilities. This study used a sample group of 74 school administrators 87 teachers and 46 supervisors. Data were collected by questionnaire and analyzed for t-test mean and standard deviation (S.D.). Results revealed that firstly concerning the joint learning management model for children with learning disabilities overall operational condition and need for development were in high level. Considered by item it was found that financial management and procurement were in high level. Secondly comparison of operational condition and need for development in joint learning management for children with learning disabilities between overall results and itemized results was significantly different at the level of .01. Thirdly the joint learning management model for children with learning disabilities consisted of 7 areas: 1) academic administration; 2) management process; 3) Knowledge management; 4) organizational structure and personnel; 5) human resource management; 6) general administration; and 7) financial and procurement management.

The purpose of this research is to improve the pepper mill for increasing performance. The characteristic of the pepper mill is a trapezoid shape. The structure is made of angle steel and stainless steel sheet. The motor used a power unit is 1 hp and send the power to the driving belt for driving the disc. There are new pattern of designed discs. The discs are made from stainless steels and have three different patterns on the surface of discs. Each test must measures the moisture contented of the pepper seeds. If the moisture is less than 9% can be milled. However if the moisture is more than 9% that must be taken pepper seeds to sunning or drying. The test is 10 sets in each set of test using two samples of pepper seeds. In each test pepper seeds must be weighted before the milling when they are milled the finish. After that they are brought the milled pepper seeds to a weight and separated a size. The sorting by size is 5 sizes as a less than 5 microns 150-250 microns 250-425 microns 150 microns 425 to 1000 and more than 1.00 mm. The results of research shown that pattern of discs will give the different pepper powder sizes

The objective of this study was to develop a technique for detection of the water added in raw milk using Inter Digital Electrode (IDE) other than using conventional methods such as determination of specific gravity or of the freezing point temperature and the compression on frozen samples. The assumption capacitance value of added water in raw milk will be varied with the quantities of added water. The experiment was performed by using a LCR (GW INSTEK LCR-817) meter to measure the capacitance value of milk contaminated water from 0 to 90% and electrodes which are normal and ground of different electrode number (N) of 7 10 and 13 width (W) of 1 and 2 mm. and length (L) of 10 20 30 40 and 50 mm. Results shown that the capacitance value of the water added in raw milk were lower than the raw milk without added water. Additional the W1L50N13G (W=1 mm. L=50 mm. N=13 and grounded) detects the water added in raw milk with R2 of 0.9904