Improving Feedback In ASSISTments: Pedagogical Agents and Game-Like Elements

The ASSISTments system helps students learn by administering online assessments and assisting students in understanding the material. The feedback in the system can be improved by examining the mechanisms used in video games and interactive tutoring systems. With the use of game-like rewards, personalized textual feedback, and a pedagogical agent, ASSISTments can be made more engaging for students. This document outlines our iterative design process which we used to create a proposal for an improved student experience

Reflectance-Based Pulse Oximetry for the Chest and Wrist

Reflectance-based pulse oximetry is a technique used for noninvasively monitoring the oxygen saturation (SpO2) and pulse rate (PR). However, there is little supporting evidence that it can accurately collect measurements from the chest and wrist. In this project, a reflectance-based pulse oximeter was built and used to collect measurements while sitting, standing, during self-induced hypoxia, and during self-induced hyperventilation then compared to the measurements taken by a HOMEDIC Deluxe Pulse Oximeter. The prototype was able to accurately measure within an error of + 1% and ±3% for SpO2 and PR respectively from the wrist while an error of ±1% and +4% for SpO2 and PR respectively from the chest