The purposes of this research were: 1) to develop web-based instruction (WBI) on CAI course using project-based learning technique; 2) to evaluate if the WBI meets an 80/80 efficiency criterion; 3) to compare the students’ learning achievements by pre-test and post-test; and 4) to examine student satisfaction towards the WBI. The sampling group selected by purposive sampling was 30 grade 12 students who registered in the 2nd semester of academic year 2012 at Sarasas Witaed Bangbon School. The research instruments consisted of ten units of WBI; a learning achievement test administered before and after the instruction; and the evaluation form of the student projects. The statistical tests employed to verify the efficiency of the WBI were the E1/E2 efficiency index and t-test. The result of this research found that the efficiency of WBI was 84.56/82.33 which was higher than standard criterion 80/80. There was significantly higher learning achievement of the students in the post-test than in the pre-test at .05 levels. The learners’ opinion after using the WBI was very satisfactory.

The objective of study was to design and development of spray drying technology for production of salt powder. The process design and build spray dryer that consisted of three parts: an atomizer a drying column and a dry powder collecting unit. The operation of a spray dryer was co-current flow. A drying column had diameter 0.5 m high 1.5 m and heater 15 kW with automatic temperature control PID 220 V AC power. The test used a saline solution. The inlet air temperature had 5 levels: 130 140 150 160 and 170 ?C. The inlet air velocity had 5 levels: 8 8.5 9 9.5 and 10 m/s. The results were a spray dryer be able to saline solution became salt powder with moisture content between 1.0 - 2.5 % (wet basis) which was in the standard of pure consumable salt (TIS 2086-2544) and can be classified at first class that moisture content had no more than 3 %

The objective of this research was to study the factors affecting stress of elderly in Ban-Klong district amphur Muang Phitsanulok province. The 300 elderly in specific area was sampled by stratified sampling and questionnaire was used as a tool in this research. The result indicated the causes of stress could be classified into five factors. The first factor was personal problem such as aging health and injury and timeless. The financial status eg. higher living expense insufficient salary and lower allowance was ranked as the second factor. The third was family status for example death of spouse tribulation and family controversy. The social state – leadership – and environmental problem such as disaster was ranked as the fourth and the fifth respectively. However the stresses were relieved by watching TV seeing movies doing favourable hobbies making merit relaxing doing meditation and praying. Finally effectively management of stress resulted in better mental health and living with wellness.

The purposes of this research were as follows : 1) to construct and find an efficiency of classroom action research on academic work development for teachers in Surin province as the 80/80 standardized criterion efficiency 2)to find the effectiveness index of classroom action research on academic work development for teachers in surin province 3)to compare pre-test scores and post-test score all lessons 4)to study the satisfaction of teachers after they join the class 5)to find the retention of the teachers after join the class in two weeks. The sixty teachers were area or simple random sampling selected from teachers on surin province this research conducted duringthe first semester academic year 2011-2012. 1) An efficiency of classroom action research on academic work development for teachers is surin province was 82.19/81.92 which higher than the 80/80 standardized criterion efficiency.2) The effectiveness index of classroom action research on academic work development for teachers in surin province was 0.7145.3) The results of the comparisons of pre-test scores and post-test scores all lessons were significantly different at 0.05.4)The results of the satisfaction of teachers among a classroom action research on academic work development for teachers among a classroom action research on academic work development for teachers in surin province was found to be a high Level(x=4.27).5) The retention of the teachers after join the class in two week was no significantly different at 0.05.

The learning of Educational Quality Assurance topic has been important for students and educators. The nature of the topic has more complex contents of key performance index (KPI) and students are asked to learn by following the text books. Consequently the topic is not interested and the students and teachers lack of interaction during learning on the topic. Therefore this study developed the multimedia Educational Quality Assurance to provide a self-study and to enhance students’ understanding in this matter more. The sample group consisted of 60-third year undergraduate students on Technical Education learned Quality Assurance course. The results of this study shows that participating students have post-test score more than pre-test score significantly with the confidence level of 95% and have learning progression (normalized gain =0.62) implying that they could learn more with the developed multimedia. Moreover they get high satisfaction (4.52) with the developed multimedia.