This research aims to study and compare the test results obtained from the rolling resistance tester of automobile tires based on force method and torque method system. The four newly manufactured tires were sampled from two tire classes namely passenger car tires (Class C1) and light truck tires (Class C2). The tire rolling resistance test according to the international standard UN ECE Regulation No.117 was used as an important research process. The experimental work discovers that the rolling resistance of the same tire obtained from the test between the two different methods of testing machines was not more than 6 percent different. The testing results that used the torque method system calculation are high reliability because of the principle of calculation from the measurement value directly results in. and suitable for research testing. However the force method tester can perform more than a tire simultaneous test which is suitable for working in industrial applications where time is limited.

The objectives of this research is to study the relationship between tolerance and measurement range of load cells. Tolerance test kit length of mass beam 90 cm was used. It can create the compressed force at the load cell more than 1 kN. The experiment cam be divided into 2 stages; 1.) verification of load range and 2.) linearity test. Both stages are tested at a temperature at 25°C using 10 to 30 kg of mass in the lowest compressed force condition of 0.091 kN and the maximum compressed force condition of 1.12kN As a result the linearity performance of the tolerance of the load cell test kit between calculated force and displayed value force are different 0.354 percentage only while the standard deviation of displayed value force and voltage signal output are 0.0013 and 0.0022 respectively. It reveals that the experimental result is reliable because of less than 1. In addition the tolerance of the load cell tolerance testing machine is 0.00300 (0.3 percent) which was calculated from the comparison of the tolerance specification of two main equipment that specified by manufacturer.

This research aims to develop the guidelines of an automated educational recommending system through various social media in form of chat robots (Chatbot). This is under the assumption that the Chatbot can assist the human workload in responding to Students’ frequently asked questions (FAQ). With the Chatbot inquirer students would be responded in fast and accurate to the inquiries. The prototype of this system is built on the Dialogflow platform to connect to the Line Application. The prototype was tested via users and received “good” level of the overall user’s satisfaction.

This research is the study of microwave distribution in the drying chamber to develop the belt-conveyor microwave dryer. The dimensions of the drying chamber are 90 cm width 3 cm length and 30 cm height. Two 800 W magnetrons were installed at the top of the chamber. It was found that the uniform of microwave distribution was observed at the center area of drying chamber. The uniform microwave distribution in the drying chamber at 400 W is achieved. A microwave leakage from the prototype is within the microwave oven safety standard of the US Department of Health and Human Services. This study can be used as a guideline for an industrial design for belt-conveyor microwave dryer.

This research aimed to study students opinions towards the Cheer and Admission Conference and present a creative recruitment model for students of the Faculty of Science and Technology Rajamangala University of Technology Phra Nakhon. The sample group was undergraduate students of The Faculty of Science and Technology Rajamangala University of Technology Phra Nakhon with 376 students studying in 2019. The data collection tools were questionnaires of students opinions on the activities. Cronbachs alpha coefficient was used to examine the whole questionnaires reliability yielding a value of 0.83. A statistical package for analyzing data collected from January to February 2020 was used with the statistics mean standard deviation t-test and one-way analysis of variance (ANOVA). The research results found that: 1. The Pros and Cons of students’ opinions on the freshman orientation activities and cheer meetings were that freshmen get to know friends and seniors; freshmen are afraid of juniors and seniors. 2. Male and female students had different opinions about organizing activities for freshman recruiting and cheered meeting. 3. Students studying in different disciplines had no different opinions on organizing new freshman activities and cheer meeting. 4. Students studying in different year levels had the same opinion on organizing new recruiting activities and cheer meeting. 5. Features of the creative recruiting activities format are as follows: 5.1 It is an activity that gives importance to safety and respect for personal freedom. 5.2 It is the responsibility of the Faculty to closely watch this field of study 5.3 It is an activity that promotes pride in being a student at the university. 5.4 It is an activity that helps students to adjust to university life and aims to foster a good relationship between students seniors and juniors. 5.5 An outside activity must be an event organized by a faculty or university department only.