The purpose of this study was to identify and compare instructors and students perceptions of factors that contribute to the effective use of Project-Based Learning (PBL) in Thailand. The sample for the study consisted of 247 electrical technology instructors from Thai vocational education institutes and 161 students who were electrical power graduates from these institutes. The data was analyzed using factor analysis and structural equation modeling with LISRELTM. The results of the study indicated that both instructors and students agreed on the importance of two factors: Motivation to Learn and use of the Scientific Process. Students were significantly more likely to value Sharing Ideas and Thinking Skills. The role of instructors and students in the PBL classroom is discussed.

This paper focuses on a general model M/M/C queue for the switch path application, solving the case when packets at the head‐of‐line position have the same destination. These packets can pass through C paths to the same output port simultaneously. There are two types of service: the first in first out (FIFO) and the random order of service (ROS). Research concludes that among three switching paths, the response time of the FIFO type, under 70 per cent load condition, is better than that of the ROS type by 10 per cent. The theory of the binary hypercube is also used as a model for finding the steady‐state probability (P000) in the case of zero packets in the system. Using P000 to determine performance, the authors’ proposed approach is shown to be superior to previously suggested methods.