CaCu3Ti4O12 (CCTO) has attracted a great attention for electronic devices miniaturization due to its
very high dielectric constant properties at a wide range of frequency and nearly constant over broad temperature range. The origins of the giant dielectric constant have been speculated from electrical heterogeneous of interior elements of the CCTO ceramics. Four origins were suggested contributed to the electrical heterogeneous. In this study heat treatment were done with the electrode contact in Argon gas environment and the electrical properties over very wide frequency of CCTO ceramics were investigated. Cylindrical CCTO pellets samples were prepared by solid state reaction method and single phase of XRD pattern was obtained after sintering processes. Electrical impedance responds were measured at frequency from 100 Hz to 1 GHz for the samples for untreated and heat treated at 200ºC, 250ºC, 300ºC, 350ºC and 400ºC of CCTO. Improvement to the dielectric constant can be seen for 350ºC and 400ºC samples and dielectric loss were improved for 200ºC and 300ºC samples for overall frequency. The variations were discussed based on oxygen deficiency content and resistivity of the elements inside of CCTO structure.
Recent fire accidents in schools have given rise to the safety
issues. Training on fire safety is very important to help improve the safety aspect
in schools while perceptions of fire safety training among school teachers are
crucial in order to identify methods to prevent accidents from recurring. This
study was conducted in order to analyze the perceptions of school teachers
towards fire safety training in schools. Survey questionnaires were distributed
among 400 school teachers from 111 schools randomly selected from ten District
Education Offices (DEO) in Kelantan. The results were analyzed using
Statistical Package for the Social Sciences (SPSS). They were based on 32% and
68% male and female respondents respectively. Descriptive analysis shows that
most of the school teachers agreed with the need for fire safety training to be
conducted in schools. This study suggests that school teachers require fire safety
training in order for them to help improve fire safety in schools. Thus, teachers
will be able to teach their students on the importance of fire safety, how to
prevent fire and actions to be taken if an emergency happens in schools. It is
hoped that the number of fire accidents in schools can be reduced with the school
communities’ commitment towards safety.
Road Safety remainsone the most important issuesaffecting educational institutions especiallythe school. The
prevalence of road accidentsin recent news reportsunderlines the importance of this issue. Such accidents involving
school pupils have further escalated this concern. As such,safety awareness among school teachersis crucial in order
for them to identify the suitable methods to prevent more road accidents in future. This study was conducted to
analyse teachers’ awareness of road safety in school to gauge the training requirementson road safety. Road safety
education and training in school is just as important as improving safety for road users outside schools. For this
study, a set of survey questionnaire wasdistributedto 400 school teachers from 111 schools randomly selected from
the 10 District Education Offices in Kelantan. Results were then analysed using Statistical Package for the Social
Sciences (SPSS). From the results, 40% of respondentswere male and 60% of them were female. Descriptive analysis
showed that school teachers understood road safety as 90% of them possessed basic safety knowledge, while 10% of
them lacked basicknowledge on road safety. However, they did not implement safety practice that may have
contributed to unfortunate eventshappening outside of school including road accidents as reported in the news. This
study suggests that school teachers must undergo road safety training to promote and improve road safety in
school.With higher awareness and more information about the road safety, the teacherscould create a safer
environment in their school. Undoubtedly, teachers have a vital roleto ensure safety of their pupils and their
commitment will likely reduce the number of road accidents.