This objective of this research is to study the development of the pararubber tapping knife in order to determine the optimum of the edge and oblique angle and to compare the efficiency of the electrical motor and Je-Bong knife. The product was manufactured by iron steel carbon S45C and AISI 5160 with 75-90 degree edge knife and 0-45 degrees oblique angle. The results can be concluded that the optimum condition of the edge knife oblique knife and the cutting force were 75 degree 45 degree and 3.51-51.42 N respectively. It was found that the cutting force was straightly increased form 0-51.42 N and then gradually decreased. The energy consumption of timber cutting was 0.00370 J/mm3. The quality of the rubber tap using electrical motor was 72.07% which was higher than 2.8 of Je-Bong knife. As the results this product shows the average of rubber timber which is 2.22 mm. in 22.51 s.

The objectives of this study are to 1) examine study selection Home Economics at vocational certificate and high Vocational certificate of learner in Singburi vocational college and 2) To examine the relationship between repondents’ general information and study selection Home Economics in vocational certificate and high Vocational certificate of learner at Singburi vocational college. The sample used were 200 students who is studying in vocational certificate and high vocational certificate at Singburi vocational college. The instrument used in this thesis was questionnaire. The statistics based on the data analysis include percentage frequency values average standard deviation and Chi Square. Analysis of statistical data by a computer program. The finding 1) The learners pay attention to the selection of home economics program at the Vocational Certificate and High Vocational Certificate Singburi Vocational College in general were rated at high level. When considering each side it was found that every side were rated at high level. Sorted average from most to least is career curriculum personal related image of college and the college environment and 2) the relationship between repondents’ general information and study selection Home Economics in vocational certificate and high Vocational certificate of learner at Singburi vocational college found that sex age Grade Point Average (GPA) occupation of parent revenue of parent per month that related with study selection Home Economics in vocational certificate and high Vocational certificate Singburi Vocational College is statistically significant at the 0.05 level.

The purpose of this research are 1) Study of the knowledge in home economics of lower level than higher education at Nakornpathom vocational college. 2) Study motivation to attend class in home economics subject of lower level than higher education of Nakornpathom vocational college. 3) To study the relationship between personal factors and motivation to attend in home economics of lower level than higher education at Nakornpathom vocational college. 4) To study the relationship between knowledge and motivation in home economics subject of lower level than higher education at Nakornpathom vocational college.The sample were 228 students that studying in the vocational certificate and high vocational certificate in home economics in the academics year 2016 at Nakornpathom vocational college. The research instrument are questionnaire and statistics used in data analysis were frequency value percentage average standard deviation and Pearson Chi-Square. Data were anayzed by used a computer program. The research result found that 1) The most home economics students in lower level than higher education at Nokornpathom vocational college have knowledge in home economics is in the middle level. 2) The students have opinion about motivation to attend class in home economics subject at Nokornpathom vocational college in overall is high level. When considered each section it was found that the level was high level in all section. 3) The personal factors were sex field of study cumulative grade point acerage (GPA) have related with motivation to attend class in home economics of lower level than higher education at Nakornpathom vocational college is statistically significant at .05 level. And 4) The knowledge about home economics have related with motivation to attend class in home economics of lower level than higher education at Nakornpathom vocational college can classified in many sections were the teaching and learning pride in the field of study relationship to teachers relationship to friends and the classroom environment is statistically significant at .05 level.

The objectives of this research to study social attitude towards and find relation between the social attitude towards sexual diversity with students Bachelor of Education in Faculty of Home Economics Technology Rajamagala University of Technology Krungthep individual factors and external factors. The methodology: survey social attitude of population and sampling group had been used 233 persons (12 teachers 94 undergraduate students and 127 secondary school students).nTools are questionnaires the interview schedule and the observation and data analysis by usage of the descriptive statistics and the inferential statistic. The results of the research found that: 1) The social attitude toward that includes teachers and students is high level on the opinion and the sense but the regulation of behavior is middle level. In the other hands the social attitude toward of the student only is high level on the opinion the sense and the regulation of behavior. 2) The individual factor (ages) of undergraduates and three concepts of attitude is implicitly statistical significance (p < 0.05). The individual factors (genders and educational levels) on the attitude of regulation of behavior of the secondary school student are implicitly statistical significance (p < 0.05). The external factors of all population and samplings are implicitly statistical significance (p < 0.05)