Articles

Research articles are full-length manuscripts that represent the culmination point of an undergraduate research project, where the author addresses a clearly defined research problem from one, or sometimes multiple approaches.

Denoising electromyographic signals via stationary wavelet decomposition and filtering
Rehman Ali, Gareth Guvanasen & Stephen Deweerth, PhD

The measurement of electromyographic (EMG) activity may be used to diagnose neuromuscular disorders, to control electrical devices through muscle-computer interfaces, or to return motor function via neuroprosthetic devices. Unfortunately, EMG measurements will often contain noise, introduced by mechanical vibrations, electromagnetic radiation, or the electrical stimulation of tissue. We compare wavelet-based filtering to traditional Fourier-based filtering methods and demonstrate that wavelet-based approaches better conserve EMG signals in the frequency domain while removing noise measurable within the time domain.


Biofilm production regulates horizontal gene
Sarah Wilson, Eryn Bernardy & Brian Hammer, PhD

The waterborne bacterial pathogen Vibrio cholerae utilizes a cell-cell communication system called quorum sensing to coordinate group behavior in both a human host and aquatic environments. Virulence genes like the cholera toxin, biofilm genes for sticky secreted attachment factors, and competence genes for DNA uptake are all regulated through this population density-dependent system.


Warpic: A four-finger system for designing two-dimensional image warping animations
Brian Edmonds & Jarek Rossignac, PhD

Image warping can be defined as the manipulation of portions of an image through user input. We propose a software system called Warpic that allows for the creation of two-dimensional animations from static images via user controlled image warping.


The trajectory of a table tennis ball is determined by its diameter
Jeffrey Heninger, Aishwarye Chauhan, Nathan Holley & Edwin Greco, PhD