• Journal of The Korean Association of Information Education
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• v.14 no.3
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• pp.461-468
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• 2010

Peer evaluation is an evaluation centered on the student, through which interaction among students becomes active. The peer evaluation has a greater influence on students than a unilateral directions from the teacher has. This study aims to develop performance assessment models and tasks in which students participate using the remote responder in 4th grade social studies classrooms in the elementary school. It also aims to apply the developed models and tasks to class and to find out how they affect students' academic achievement and attitude. The student participation performance assessment using the remote responder appeared to bring a positive influence on social studies academic achievement and showed statistically significant results. The survey on the students' interests in using the remote responder and its effects conducted after the performance assessment showed positive results.

• Journal of the Korea Institute of Information and Communication Engineering
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• v.27 no.1
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• pp.62-68
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• 2023

An aerial relay system utilizing an unmanned aerial vehicle(UAV) or drone is addressed for event-driven operations such as temporary communication services for disaster affected area, military and first responder support. UAV relay system (URS) targets to provide a reliable communication service to a remote user equipment or an operator, therefore, a fast UAV placement to guarantee a minimum quality of service(QoS) is important when an operation is requested. Researches on UAV utilization in communication systems mostly target to derive the optimal position of UAV to maximize the performance, however, fast deployment of UAV is much more important than optimal placement under emergency situations. To this end, this paper derives the feasible area for UAV placement, investigates the effect of performance requirements on that area, and suggests UAV placement to certainly guarantee the performance requirements. Simulation results demonstrate that the feasible area derived in this paper matches that obtained by an exhaustive search.