Othman Zainon

The potential of unmanned aerial vehicle for large scale mapping of coastal area

Many countries in the tropical region are covered with cloud for most of the time, hence, it is difficult to get clear images especially from high resolution satellite imagery. Aerial photogrammetry can be used but most of the time the cloud problem still exists. Today, this problem could be solved using a system known as unmanned aerial vehicle (UAV) where the aerial images can be acquired at low altitude and the system can fly under the cloud. The UAV system could be used in various applications including mapping coastal area. The UAV system is equipped with an autopilot system and automatic method known as autonomous flying that can be utilized for data acquisition. To achieve high resolution imagery, a compact digital camera of high resolution was used to acquire the aerial images at an altitude. In this study, the UAV system was employed to acquire aerial images of a coastal simulation model at low altitude. From the aerial images, photogrammetric image processing was executed to produce photogrammetric outputs such a digital elevation model (DEM), contour line and orthophoto. In this study, ground control point (GCP) and check point (CP) were established using conventional ground surveying method (i.e total station). The GCP is used for exterior orientation in photogrammetric processes and CP for accuracy assessment based on Root Mean Square Error (RMSE). From this study, it was found that the UAV system can be used for large scale mapping of coastal simulation model with accuracy at millimeter level. It is anticipated that the same system could be used for large scale mapping of real coastal area and produces good accuracy. Finally, the UAV system has great potential to be used for various applications that require accurate results or products at limited time and less man power.

Ethical issues in information and communication technologies: Case of Malaysian primary schools

This paper explores the ethical issues in information communication technology (ICT) in Malaysian primary schools. Among ethical issues that have been identified are cyber crime, cyber bullying, internet fraud, hacking and others. However, cyber bullying are the major ethical issues in Malaysian primary schools. In this study, quantitative methodology has been chosen by distributing questionnaire among the respondents. The results indicate that the respondents understand the ethical issues and the use of ICT. The authors encourage further researches to investigate thus developing modules for teaching ethical issues in ICT in primary schools.

Ethical issues in the use of information and communication technology in Malaysian primary schools

Despite the advances in technology and increase of internet usage which provide numerous benefits to mankind, little is known about the problems and related issues such as the ethical issues and behavior of using the internet. Hence, it is crucial for researchers to study on the ethical issues relating to the use of information and communication technologies (ICT). This paper extends prior researches by investigating and exploring the use of ICT and ethical issues in Malaysian primary school. This study relates with four ICT issues proposed by Mason: privacy, accuracy, property and accessibility (known as the PAPA model). In this study, the quantitative methodology has been adopted by distributing questionnaires among students. The results indicated that the students are able to comprehend the ethical issues in the use of ICT.