The purpose of the study was fourfold: 1) to construct a computer-assisted-instruction (CAI) of Basic Thai for Business Communication at 2) to determine the efficiency of the CAI at 80/80; 3) to compare the student learning achievement of the CAI based on the pretest and posttest scores ; and 4) to determine the students’ satisfaction towards the CAI. The subjects of the study were the 30 first-year undergraduate students majoring in Finance and Marketing the Faculty of Business Administration at Rajamangala University of Technology Pranakorn in 2008. The instrument and procedures comprised 4 parts. Part one contains the 8 units of CAI of Basic Thai for Business Communication each consisting of examples an end-of-unit exercise and a 5-item-end-of-unit test to measure lesson efficiency. Part two is the try-out CAI to determine its efficiency based on the results of the three respective groups which were initially 6 students majoring in Accountancy then 10 students majoring in Accountancy and finally 30 students majoring in Accountancy from the Faculty of Business Administration. The data were analyzed in percentage and mean. Part three comprises the tests consisting of the 30-item pretest and posttest containing the shuffled pretest items to compare the student achievement. The learning achievement was determined by t-test. Part four is the 10-rating scale items to survey the students’ satisfaction towards the CAI. The data were interpreted in mean score.The results indicated as follows: 1) the CAI of Basic Thai for Business Communication can be effectively complemented to teaching and learning; 2) the efficiency indication of the CAI of Basic Thai for Business Communication was higher than the set criteria 80/80 at 84.58/87.44; 3) the posttest scores were significantly higher than the pretest scores at 0.05; 4) The students were extremely satisfied with the CAI of Basic Thai for Business Communication in all aspects at Σ x 4.37.

The purpose of this study. To create sound books for the blind to the blind students have learned. Listened to sound books. The knowledge about the course to determine the efficiency of computer technology and satisfaction. Of sound books. Record management by preparing a division title a body of knowledge topics. And explanations of exercises or reading record sheets for each of the slides were not reading books documents will continue throughout. Daisy produced using data recorded on a VCD disc audio and text content knowledge displayed simultaneously and then applied to the sample. The elementary school years 4-6 After data collection ended. Teaching with the query. By a separate data reading. Reading divided by topics into each side. Students listen to the blind. A total of 38 data sets representing 84.44 per cent from the number of students and 45 students. The study found that creating audio books for the blind to blind students. Satisfaction levels in the average level of 4.15 and very good audio books build knowledge about the course of computer technology for blind people. Their knowledge of academic Ability to form and practice and performance satisfaction.

The goal of this study is to study the cost of safety system in building construction by studying multipurpose building with durable goods project. The cost of safety system in building construction is divided into two categories are the safety measure cost and the safety program cost in construction. From the study it is found out that the value of safety measure cost is approximately 1.85 % of a project cost and the value of safety program cost is approximately 0.98 % of a project cost. To sum up the cost of safety system in building construction is approximately 2.83 % of a project cost .Moreover the study found out that the safety measure cost is higher than the safety program cost about 1.88 as much. From the data of this study it can be used as the guideline in estimating the cost of safety system in building construction for the future project.

This research presented the details of design and constructions of tesla transformer for testing insulator. The out put of the tesla transformer has a rate of 120 kV and 120 kHz. Tesla transformer consisted of primary coil and secondary coil which is wound on a PVC insulating chamber and use air insulation in part of coaxial. The Rotary Gap is rotated eletrode which use for increasing efficiency of voltage generation. This paper presented the details of design and constructions are explained. And compare the tesla Transformer reproduce which is created the voltage at 120 kV and frequency 120 kHz for used in HighVoltage Laboratory Faculty of Engineering Rajamangala University of Technology Para Nakhon.