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Not taking the easy road: When similarity hurts learning
Lee, Hee Seung,Betts, Shawn,Anderson, John R. Springer - Psychonomic Society 2015 Memory & cognition Vol.43 No.6
<P>Two experimental studies examined the effects of example format and example similarity on mathematical problem solving across different learning contexts. Participants were more successful inducing a correct problem-solving rule when they were provided with annotated examples rather than nonannotated examples. The effects of example similarity varied depending on learning context. In Experiment 1, by presenting an example and problem simultaneously, a direct comparison was possible between the cases. When the examples were similar, participants relied on superficial analogies that hurt learning. When an example was dissimilar from the given problem, participants appeared to study the example first to induce a solution procedure and then apply the rule to the problem, thus resulting in better learning and transfer. However, in Experiment 2 where the example and problem were presented in a sequential manner, the effect disappeared because the learning context did not support a direct comparison. We conclude that comparison is not inherently good for promoting learning and transfer, rather its effect depends on whether it supports relational mapping that is essential for schema acquisition.</P>
Optimization of an Intelligent Wheelchair: LiDAR and Camera Vision for Obstacle Avoidance
Joshua Green,Joshua Clounie,Rafael Galarza,Shawn Anderson,Jash Campell-Smith,Razvan Cristian Voicu 제어로봇시스템학회 2022 제어로봇시스템학회 국제학술대회 논문집 Vol.2022 No.11
According to the Wheelchair Foundation, over 131 million individuals depend on a wheelchair. Wheelchairs drastically improve the quality of life by providing partially disabled persons with mobility. Moreover, wheelchairs have become a central component of many hospitals, necessary to transport patients. However, manual wheelchairs limit users’ or helpers’ freedom by requiring direct actuation, either by turning the wheels or pushing the wheelchair. Electric wheelchairs allow users to navigate a wheelchair through a single control mechanism to improve flexibility. Autonomous wheelchairs are the next step in improving the quality of life and further enhancing user freedom. This paper presents the optimization of an automated wheelchair implementing unique and novel path planning and localization indoors. The results illustrate the implementation of camera vision with LiDAR for obstacle avoidance and advancements in a modular infrastructure.