The objective of this study were to use of RAPD technique for identification of Krachai ecotype in Thailand. DNA from 36 sample of Krachai that collected from every part of Thailand are amplified by 10 primer and relation analysis by UPMGA. This study was conducted at Faculty of Agriculture at Bangpra Sriracha Chonburi. The results showed every primer can made different pattern. After comparison of RAPD pattern from each sample can divide into 2 groups. However every sample is closely genetic relation likes it came from same original.

The aim of this is to study the relationship among the parameters such as demographic characteristic and the utilities and media explosures of the student of RMUTP THEWES CAMPUS by using surveying research for 303 sampleis.

This paper presents the development of an initial rotor position estimation of permanent magnet synchronous motors (PMSM) without a position sensors drives with embedded digital signal controller. The principle of the estimation is based on induced voltage of electromagnetic flux by injecting high-frequency voltage at standstill. The controller is embedded digital signal controller (DSC) due to the small and cheap controller. Experimental results show that changing initial frequency capable of reliable.

This research is obviously studied the problems and obstacles in accepting the students for training according to the workplaces notions through the areas of training management training format training students qualifications and training students knowledge. The subjects for this research were randomly selected from varipus firms which accepted 115 third year undergraduated students in training. Questionnaires were statistically analyses by Percentage Mean and Standard Deviation. The findings of this research were as follow :1. In the training management aspect the workplaces were not able to cooperate with school for preparatory training and they did not know the major objectives of the training course syllabus moreover the firms did not have specific positions for training students. 2. Through the training format the observers who checked training students performances did not cooperate with the workplaces and the training students who themselves directly contacted to workplaces were not accepted. Furthermore there was no continuity of scattering training students on workplaces. 3. Training students qualifications training students were lack of mature selfconfidence and thoughtful ideas in working and solving problems. 4. Training students knowledge training students were not qualified in their vocational skillsEnglish and Thai communications task analyZing and task planning for their training job.

The purpose of this study was to study and compare The Learning Problem of Student in faculty of business administration at Rajamangala University of Technology Phra Nakhon in 5 aspects : curriculum instructional learn environment instructors and students . The student were classified by gender educational background major subjects student achievement and time of study. The samples in this research were 200 students. The 82 item questionnaires of Likerts rating scales was used as the research instrument. Percentage mean standard deviation t -test for independent sample F -test and LSD analysis were statistical method to analyze data. The results were as follows: 1.The Learning Problem of Student all aspects were in the low levels that learn environment the highest while instructional curriculum instructors and students was in the second rank. 2.There was significant difference for the learning problem of student in curriculum and learn environment at the 0.05 level among students in different gender. 3.There was significant difference for the learning problem of student in students at the 0.05 level among stUdents in different educational background and student achievement. 4.There was significant difference for the learning problem of student in instructional learn environment instructors and all aspects at the 0.05 level among students in different time of study. 5.There was significant difference for the learning problem of student in curriculum instructional learn environment instructors and all aspects at the 0.05 level among students in different major subjects.