The purpose of this study was to identify the visualization of the students, the students' cognitive load, and the teaching style of the teacher while teaching using the augmented reality (AR) teaching kit in the classroom. The population involved 90 Welding Technology students at Vocational College of Batu Pahat. The purposive sampling method was used and involved 30 respondents. The instrument used was a questionnaire to obtain information. Data were collected and analyzed descriptively. Based on the pilot study, the Cronbach Alpha value was 0.94. The results showed that the use of an AR teaching kit was able to enhance students’ visualization and reduced the cognitive load experienced by the students. In addition, teaching and learning are more interesting because of the teaching style of teachers who use theories and practices simultaneously. Furthermore, the use of AR in education can enhance the visualization of students abstractly, which helps them when conducting experiential tests and establishing a safe teaching and learning environment.

No abstract

No abstract

No abstract

This paper presents the design and evaluation of the hardware circuit for electronic stethoscopes with heart sound cancellation capabilities using field programmable gate arrays (FPGAs). The adaptive line enhancer (ALE) was adopted as the filtering methodology to reduce heart sound attributes from the breath sounds obtained via the electronic stethoscope pickup. FPGAs were utilized to implement the ALE functions in hardware to achieve near real-time breath sound processing. We believe that such an implementation is unprecedented and crucial toward a truly useful, standalone medical device in outpatient clinic settings. The implementation evaluation with one Altera cyclone II–EP2C70F89 shows that the proposed ALE used 45% resources of the chip. Experiments with the proposed prototype were made using DE2-70 emulation board with recorded body signals obtained from online medical archives. Clear suppressions were observed in our experiments from both the frequency domain and time domain perspectives.