The aim of this research is to develop a hands-on spatial geometry learning system to facilitate students’ geometry learning. The system is developed with Duval’s four critical elements of geometry apprehension including perceptual apprehension, sequential apprehension, operational apprehension and discursive apprehension. The system supports senior high school students in the process of spatial geometry problem-solving, allowing them to hands-on manipulate spatial geometry graphics and develop their visualization and mental imagery. In total, 58 participants from different classes were recruited. The experimental group used the hands-on learning system, whereas the control group followed the traditional paper-based approach. The study investigates the effects of the hands-on geometry learning system on students’ perceptual apprehension, sequential apprehension, operational apprehension, overall spatial geometry scores and learning attitude. The results revealed more learning attitude, and higher perceptual apprehension, sequential apprehension, operational apprehension in the experimental group.

Regular expression has been widely used in network intrusion detection system to represent attack patterns due to its expressive power and flexibility. However, the traditional memory architecture suffers from the problem of memory explosion for certain types of complex regular expressions. In this paper, we propose a hierarchical state machine architecture which can significantly reduce the memory required to accommodate complex regular expression patterns. The experiments demonstrate a significant reduction in memory for the complex regular expression patterns commonly used in network intrusion detection systems.

In this paper, we designed a wireless peer-assisted leaning system for early EFL reading to enhance online collaborative EFL reading and provide distributed EFL learners with an opportunity to teach and learn with each other. Compare with the control group, the result shows that wireless EFL reading is emerging as a flexible and portable solution to the pedagogical challenges exist in conventional EFL reading teaching instruction.