Head gimbals assembly (HGA) an important part in hard disk drive is made by assembling slider on suspension by using an epoxy adhesive. In production process there are three main problems originated from epoxy adhesive which are the instability of adhesive’s viscosity while it is in an operation air bubble in adhesive and low degree of curing which is not enough to adhere slider on suspension. The instability of adhesive’s viscosity was solved by preheating the adhesive at 60oC for two hours before use but it may be unsuitable because the viscosity increased due to curing reaction and adhesive’s properties are changed. Air bubble in the adhesive was removed by the supplier using a degassing method and vacuum centrifuge. Contamination from a surfactant for decationization on surface of suspension and a cleansing agent for cleaning slider before assembling HGA process they could act as inhibitors of curing reaction which is evidenced by the Differential Scanning Calorimetry (DSC) pr

The research aims to compare results of algorithm for solving allocation problem in multi-stage rice transportation between formulation of mathematical model with computation by Lingo V.11 and application of Differential Evolution (DE). The research was conducted in two stages: 1) comparing efficiency of the two employed applications in terms of economic and 2) comparing for minimum computation time. The proposed algorithm was tested with problems in six simulated case studies. Results show that in terms of economic DE did not generate better solutions than Lingo V.11 at an average of 0.525%. However it used faster response time at an average of 206 minutes when compared to Lingo V.11.

This research aims to students toward the acitivites of the Rajamangala University of Technology Phra Nakhon. And to compare the reviews of students on the activities of Rajamangala University of Technology Phra Nakhon. The samplings for this study were the 386 students in Rajamangala University of Technology Phra Nakhon. All 9 faculty. Accident Sampling The statistics were used namely; percentage mean and standard deviation (S.D) t-test and One-Way ANOVA. The statistical significant level of 0.05 and test on the differences with Seheffe method. The results were as follows : students toward the activities of the Rajamangala University of Technology Phra Nakhon. Found that overall comments to a large extent. When considering by aspects in arranging daily activities that benefit students. The mean maximum. And the implementation of student activities. The lowest average. Hypothesis testing to compare the reviews on the issues and events of Rajamangala University of Technology Phra Nakhon. Found that students gender and the different. Had opinions toward condition and the activities of Rajamangala University of Technology Phra Nakhon. No difference. And Students at different grade. Had opinions toward activities and problems of Rajamangala University of Technology Phra Nakhon. Different at significant level 0.05

This research is to study the problems and barriers for cooperative education student trainee recruitment according to the work place’s concept the aspects of training management training format training students’ qualifications and training students’ knowledge. The population are owners of various workplaces who accept 180 fourth year undergraduate students in training. Questionnaires are used to collect data statistically analyzed by Percentage Mean and Standard Deviation. The findings of the research reveals problems and obstacles as follow : 1. For the training management aspect the workplaces are not able to cooperate with the university to set aims and prepare the students before training the workplaces do not recognize purposes of the university’s training course the suitable positions for the students are not provided by the workplaces. 2. For the training students’ qualifications the students are unlikely to make decision in their performances’ problem solving no self-confidence and carefulness in their performances. 3. For the training students’ knowledge the students are unable to analyze and plan their performances; they have not a good command of both written and spoken English and Thai. In addition they lack of vocational skills.

The purpose of this study was to study and compare problems of members of community Phya Prasit towards saving in two aspects: knowledge of saving and perspective of saving. The samples were classified by gender age occupation status education and monthly income. The samples in this research were 126 members of community Phya Prasit. The study participants selected by simple random sampling. The test with 23 items and questionnaires of rating scales with 24 items were used as the research instrument. Percentage mean standard deviation t - test for independent sample F - test and Scheffe’s test analysis were statistical method to analyze data. The results were as follows: 1. Since income of the members of community were relatively low no extra revenue and debt to be paid. So guidelines for the development on savings were as follows: training to make plan for savings promote to make the household account training to make extra money training planned to spending and training to make the knowledge of investment. 2. Problems of members of community Phya Prasit towards saving: in aspect of knowledge on saving of members of community were relatively low while perspective of saving was in a great extent. 3. There were significant difference for problems of members of community Phya Prasit in aspect of knowledge of saving at the 0.05 level among members of community Phya Prasit in different gender and different age. 4. There was significant difference for problems of members of community Phya Prasit in aspect of perspective of saving at the 0.05 level among members of community Phya Prasit in different occupation.