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This study was to determine the levels of ICT skills and ICT usage in the classroom among technical and vocational teachers in Malaysia. The data of this study were collected using quantitative techniques, whereby the questionnaire was administered to 329 technical and vocational teachers who were teaching engineering subjects in Malaysian technical and vocational schools. The questionnaire included items related to teachers' ICT skills, ICT use and their demographic factors. The study has shown that teachers' ICT skills were at moderate levels, and that a vast majority of teachers who participated in this study were moderate users of ICT in classroom teaching. There were significant differences of teachers' ICT skills as a function of demographic factors: gender, age, years of teaching experience, and type of ICT training. Also, there were significant correlations between ICT skills and ICT integration in classroom. Teachers' demographic factors (age, gender, teaching experience, except level of education) did not influence ICT integration in classroom.

The investigation reported in this paper was centered on the application of the acoustic emissions (AE) technology for characterising the defect sizes on a radially loaded bearing. An experimental test-rig was designed such that defects of varying sizes could be seeded onto the outer and inner races of a test bearing. The aim of this investigation was to correlate defect size with specific AE parameters and to ascertain the relationship between the duration of AE transient bursts associated with seeded defects to the actual geometric size of the defect. In addition, the use of AE to detect inner race defects was explored particularly as this known to be fraught with difficulty. It is concluded that the geometric defect size of outer race defects can be determined from the AE waveform.

The application of high frequency Acoustic Emission (AE) technology to condition monitoring of gears is still in its infancy. Understanding the influence of gear operating parameters on the generation of acoustic emission is essential in applying the AE technology to gear condition monitoring. This paper presents experimental findings on the influence of speed and load in generating AE for operating helical and spur gears. The experimental findings suggest that any percentage reduction in specific film thickness (), a direct consequence of a change in load condition, results in a nine-and four-fold percentage change in AE r.m.s for the spur and helical gear sets respectively. A numerical model representing changes in AE r.m.s with variation in load and speed under near isothermal conditions for spur and helical gears was also established. In conclusion, it is postulated that the AE technology could offer a means of measuring insitu the effectiveness of a lubricant for operational spur and helical gears thereby establishing if the correct lubricating conditions are present to ensure optimal life usage.

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