skip to main content


Title: Short-Term and Long-Term Effects of POGIL in a Large-Enrollment General Chemistry Course
Award ID(s):
1709144
NSF-PAR ID:
10186528
Author(s) / Creator(s):
; ; ;
Date Published:
Journal Name:
Journal of Chemical Education
Volume:
97
Issue:
5
ISSN:
0021-9584
Page Range / eLocation ID:
1228 to 1238
Format(s):
Medium: X
Sponsoring Org:
National Science Foundation
More Like this
  1. null (Ed.)
    Environmental effects are a significant challenge in guided wave structural health monitoring systems. These effects distort signals and increase the likelihood of false alarms. Many research papers have studied mitigation strategies for common variations in guided wave datasets reproducible in a lab, such as temperature and stress. There are fewer studies and strategies for detecting damage under more unpredictable outdoor conditions. This article proposes a long short-term principal component analysis reconstruction method to detect synthetic damage under highly variational environments, like precipitation, freeze, and other conditions. The method does not require any temperature or other compensation methods and is tested by approximately seven million guided wave measurements collected over 2 years. Results show that our method achieves an area under curve score of near 0.95 when detecting synthetic damage under highly variable environmental conditions. 
    more » « less