Maia Stiber

Sophomore • Caltech

SpiroCall

Mayank Goel, Elliot Saba, Maia Stiber, Eric Whitmire, Josh Fromm, Eric C. Larson, Gaetano Borriello, and Shwetak N. Patel, "SpiroCall: Measuring Lung Function over a Phone Call," CHI'16, May 07-12, 2016, San Jose, CA (Honorable Mention paper award.)

Abstract

Cost and accessibility have impeded the adoption of spirometers (devices that measure lung function) outside clinical settings, especially in low-resource environments. Prior work, called SpiroSmart, used a smartphone’s built-in microphone as a spirometer. However, individuals in low- or middle-income countries do not typically have access to the latest smartphones. In this paper, we investigate how spirometry can be performed from any phone—using the standard telephony voice channel to transmit the sound of the spirometry effort. We also investigate how using a 3D printed vortex whistle can affect the accuracy of common spirometry measures and mitigate usability challenges. Our system, coined SpiroCall, was evaluated with 50 participants against two gold standard medical spirometers. We conclude that SpiroCall has an acceptable mean error with or without a whistle for performing spirometry, and advantages of each are discussed.


Target

Target: This game is built with a framework developed by Prof. Kelvin Sung at the University of Washington Bothell. The framework was written for computer science teachers' use in introductory CS classes. It originally supported simple, vertical block breaker games. I tested the limits of what it could do by making a horizontal, multilevel game that can be modified by the user with a simple, text "level configuration" file. The games still has blocks to break, but you conquer a level by hitting a special target block.

You can download and play this game for free!


Battery Buggy

Battery Buggy: This was a battery powered vehicle that needed to follow a curved path (to avoid an obstacle — the bucket) and stop as close as possible to a target (the blue tape). No electronics were allowed — just an electric motor and mechanical parts. The target distance was announced at competition time.


Scrambler

Scrambler: This was a gravity powered vehicle propelled by a falling 2kg mass. It held a raw egg up front and needed to stop as close as possible to a target on a barrier wall without hitting the wall and breaking the egg.