Purposes of the research were to design and develop Computer Instruction Package on Principle of Object-Oriented Programming and to find out efficiencies effectiveness and leamers satisfaction towards the package. The research tools were: 1) The Computer Instruction Package on Principle of Object-Orientes programming 2) Achievement tests 3) Quality assessment and evaluation form for multimedia software and 4) questionnaire of leamers satisfaction. sampling groups composed of 30 Bachelor first year students from Faculty of Business Administration Program Computer Infomation-Business Computer Rajamangala University of Technology Phra Nakhon. Research results revealed that the efticiency of the Computer Instruction Package was at 81.08/81.05 corresponding with 80/80 criteria. Analysis of pre-test and post-test scores found that the effectiveness aftce the process (E) was at 81.08 it was higher than before the proecss (E) which was at 18.25. Therefore the Computer Instruction Package on Program Design and Development could increase the students learning effectiveness up to 62.83 corresponding with 60 criteria. Mean of satisfaction of the sampling groups was rathe at a high level (4.31). It could be concluded that the Computer Instruction Package on Principle of Object-Oriented Programming had the efficiency that could used for self study.

This research is to study the cutting tools product in reverse engineering for turning milling and drilling included Tool holder Arbor and Insert tool. It is sampled the imported cutting tools from three areas worldwide composed with Sweden United State of America and Japan. The study emphasis in Arbor 136 mm. (6 tooth) Arbor 63 mm. (4 tooth) the changeable Insert tool typeTool bolder 20 mm. and Tool holder for turning. The result is found that Tool holder materials has the mixture of 0.387-0.437 %C hardness is 39.36-53 HRC which was full hardening. The price of Arbor (6 tooth) surveyed from four brands maximum is 22350 Baht and 2.41 times of price differentiation. The price of Arbor (4 tooth) surveyed from two brands maximum is 19000 Baht and 0.1-0.5 times of price differentiation. The price of Tool holder surveyed from three brands maximum is 14300 Baht and 0.15-0.55 times of price differentiation. And the price of Tool Holder for turning surveyed from four brands maximum is 1900 Baht and 0.5-1 times of price differentiation. The provider set up Tool holder and Insert tools will not be compatible together for marketing strategy. There are not much key player providers so there is no strong competition. The provider forces to distribute a set of 10 Insert tools and the most of Tool holder is Hardening and quenching not less than 39 HRC. The metal removal might be necessary use high technology and precision CNC Milling Machine. Therefore the study will lead to design and produce the prototype of cutting tools complete set which is compatible with Insert tools in all processes for turning milling and drilling. This cutting tools complete set differentiates from others because it helps to reduce costs reduce times and work comfortable. The development of compatible cutting tools complete set is the approach to reduce costs and times of work decrease maintenance costs and it will be the foundation to development of multi-function cutting tools complete set in place of the imported cutting tools.

This research aims to investigate the efficiency and quality of young rice planting machine which is suitable for the North Eastern part of Thailand. The investigation applies the notions of planting young rice manually by farmers into the design of a battery-driven young rice planting machine. The researcher started with the study of transplanting methods of agriculturists in the North Eastern part and the design principles of young rice planting machine. Next the components were calculated and engineering design was drawn. Then the machine was tested in terms of its efficiency and quality. The data were analyzed in terms of means. The results show that the efficiency of the machine regarding planting performance is 90 % the appearance of the machine functions applications engineering and safety achieve the average point of 3.70 which is considered satisfactory.