With the objective 1) to develop communication system operating simulation program using GUI MATLAB 2) To find the efficiency of communication system simulation program using GUI MATLAB and 3) To compare the calculation results from the developed program with the calculation results The parameters of the high frequency transmission line which were developed to be programmed Classified by type of transmission lines in the air depending on the frequency and use including two-wire transmission cables. Twin-plane transmission cables And coax signal transmission lines The program components are divided into 3 screens namely the main screen the main program screen And parameter calculation screen Systematic quality and efficiency checks by 5 experts That has specialized expertise The tools used in the research were the quality inspection evaluation form which is divided into 2 parts which are part 1 program testing and part 2 testing the statistical system used for data analysis including mean percentage and standard deviation. The research found that 1. The result of the development of communication system simulation program using GUI MATLAB with the structure of the program design Dividing operations into 3 main parts Namely the calculation of two signal transmission lines. The calculation of the twin plane transmission line program And the calculation of the coax transmission line program n each part of the program calculation there is a working principle of the program. Each part of the calculation of the program has a working principle of the program. Divided into the terms of the scope of the transmission line Calculate capacity Calculate the conductivity Calculate inductance Calculate resistance And calculate the impedance value In which all calculations can show calculation results Select the calculation of various transmission lines. The program that the research team developed The signal transmission line is divided according to the type of usage and frequency. There are 3 signal transmission lines which are two-wire transmission lines. Twin-plane transmission cables And coax signal transmission lines 2. The result of finding the efficiency of the communication system simulation program using GUI MATLAB is divided into 2 parts. Part 1 Result of the language order and ability test for all 5 sub-processes Is correct No errors in the process In which each working process is linked as designed Overall the system development can work without errors. And when evaluating system acceptance It was found that the developed program could be used as a research tool. When considering each aspect found that Design. Design standards Design quality And the structure that is not complicated design is accepted by experts As a percentage between 82% - 85% Working process sorting work process Understanding of working language is accepted by experts. As a percentage between 82% - 87% And in front of work how to work in each work Compliance with user needs is accepted by experts. As a percentage between 80% - 95% And part 2 finding the performance of the communication system simulation program using GUI MATLAB developed found that the developed program has a high level of performance (x ̅ = 4.16 S.D. = 0.35) 3. Comparison between the calculated results from the developed program and the calculated results With matching calculation results Therefore shows that The developed program can be used in place of efficient calculation by hand.

The objectives of this research were to develop of transmission line calculation program based on usage and frequency consisting of the two-wire transmission line twisted pair transmission line and coaxial transmission line. The program was developed in the form of graphical user interface in Malta. The developing and testing results found that the program was correctly capable to calculate capacity conductance inductance resistance and impedance for each transmission line usage and frequency. The results from the program with black box testing by five experts and twenty system users found the average and the standard deviation of results form computer experts were 4.04 and 0.36 respectively while those of results form the system users were 3.88 and 0.48 respectively. Conclusion it showed that the efficiency of the calculation program was a high level and can be used as a teaching and learning as well.

This research aimed to study students’ satisfaction towards teaching and learning management of bachelor of technical education curriculum from Rajamangala University of technology Phra Nakhon. The instrument used in this study was questionnaires which consisted of 5 aspects; curriculum lecturer teaching and learning process assessment and management. The statistics used in in data analysis were mean standard deviation two Independent t-test. The study found that the overall satisfaction of the students was at a good level (x = 3.97 S.D.= 0.64). When considering each aspect the highest students’ satisfaction was the lecturer aspect (x = 4.12 S.D.= 0.63). In the same fashion the teaching and learning process (x = 4.04 S.D.= 0.67) and curriculum aspect (x = 4.03 S.D.= 0.65). However students in different disciplines were not significant difference with the teaching and learning process of the Faculty of Industrial Education.

This research aims 1) to develop online learning kit for sustainable development 2) to test the effectiveness of the online learning kit and 3) to study attitudes toward online learning kit. The sample used in this research was students from Rajamangala University of Technology Phra Nakhon registered in “World in 21st Century” the first semester of the academic year of 2018 and 36 students were obtained by using a specific random method. The statistics used for data analysis were percentage standard deviation and t-test. The research found that: 1. The online learning kit was developed with the efficiency of 80.91/96.39 which is higher than the standard set 80/80. 2. The outcome of learning with online learning kit for sustainable development was developed higher than before learning at the .05 level of significance. 3. The students have higher attitude towards online learning kit for sustainable. (𝑿̅=4.42 𝑆.𝐷.=0.61)

The purposes of this research were 1) study basic information on the development of learning package with community participation using archaeological site of dusit district to encourage creative learning 2) development of learning package using archaeological site of dusit district and 3) study the experimental results using development of learning package using archaeological site of dusit district. The sample used in this study consisted of 40 tourists in dusit area by purposive sampling. The data were analyzed by using the dependent t-test. The results showed that 1. The developed learning package has 9 historic sites consisting of Thewarat Kunchorn Temple Sukhanaram Temple Benjamabopit Dusit Senaram Temple New Thong Sen Temple Rajaphatikaram Temple Doctor Porns House Suan Sunandha Palace Palace of the day and the temple of Wat Bot Samsen. Each model can be presented in the form of 3D models along with videos with descriptions of the history of each site. 2.The experiment of learning package using archaeological site of dusit district was significantly higher than before at .01 level. 3. The assessment of the satisfaction from the sample group of users learning package using archaeological site of dusit district were at a high level ( x = 4.13 S.D. = 0.49).