The Rush to Fit In

A week ago, I had been dead set on not rushing. I had heard the rumors and beliefs of my peers, that Greek life encouraged excessive drinking and partying, that hazing was still incredibly prevalent and demeaning, that Greek life worked only to discriminate and exclude members of the campus who refused to take part, promoted unfair gender roles, and encouraged pageantry and forced conversations between strangers. Still, the call of philanthropy, having a group of sisters, and finding a home on campus appealed to me. In the end, it felt like I was choosing between rushing with my friends or facing long weekends alone in my dorm room. So, that first morning, I grit my teeth, and went with it. [excerpt

Quantum Monte Carlo Simulation of the High-Pressure Molecular-Atomic Crossover in Fluid Hydrogen

A first-order liquid-liquid phase transition in high-pressure hydrogen between molecular and atomic fluid phases has been predicted in computer simulations using ab initio molecular dynamics approaches. However, experiments indicate that molecular dissociation may occur through a continuous crossover rather than a first-order transition. Here we study the nature of molecular dissociation in fluid hydrogen using an alternative simulation technique in which electronic correlation is computed within quantum Monte Carlo, the so-called Coupled Electron Ion Monte Carlo (CEIMC) method. We find no evidence for a first-order liquid-liquid phase transition.Comment: 4 pages, 5 figures; content changed; accepted for publication in Phys. Rev. Let

Heavy metals in particulate matter in Spokane County

Heavy metals in particulate matter (e.g., dust) have multiple negative health ramifications for humans including cancer, infertility, and reduced lung function. The Spokane Regional Clean Air Agency (SRCAA) has seven air quality monitoring stations around Spokane County to measure total levels of PM2.5 (particles with a diameter less than 2.5 micrometers) and PM10 (particles with a diameter less than 10 micrometers). For comparison, the width of a human hair is between 50 and 70 micrometers. The objective of this research is to examine the heavy metal composition of the particulate matter including elements such as lead, copper, and zinc. We obtained air filters from the SRCAA which had accumulated particulate matter in rural or urban environments including Turnbull National Wildlife Refuge and downtown Spokane over discrete time periods in 2013 and 2014. A microwave digestion method using nitric acid was developed to extract particulate matter from the filters. To determine the heavy metal content of the filters, we are in the process of analyzing the digestions using an inductively coupled plasma-optical emission spectrometer (ICP-OES)

Using Photovoice to Measure Learning Objectives at Camp with Adults with Developmental Disabilities

This thesis explores what qualitative objectives adults with developmental disabilities learn and comprehend at a weeklong camp that is meant to enhance interests, abilities, and social skills. The methodology used is Photovoice analysis which allows an individual who either has difficulties verbally expressing themselves or is nonverbal to still participate in question and answer focus groups. For data analysis, my categories relate back to the six domains of recreational therapy: physical, emotional, spiritual, social, cognitive, and leisure

Computational Modeling of Temporal EEG Responses to Cyclic Binary Visual Stimulus Patterns

The human visual system serves as the basis for many modern computer vision and machine learning approaches. While detailed biophysical models of certain aspects of the visual system exist, little work has been done to develop an end-to-end model from the visual stimulus to the signals generated at the visual cortex measured via the scalp electroencephalogram (EEG). The creation of such a model would not only provide a better understanding of the visual processing pathways but would also facilitate the design and evaluation of more robust visual stimuli for brain-computer interfaces (BCIs). A novel experiment was designed and conducted where 15 participants viewed stereotyped visual stimuli while their EEG was recorded simultaneously. The resulting EEG responses were characterized across participants. Furthermore, a Residual Connection Feed Forward system identification Neural Network (ReCon FFNN) was implemented as a preliminary end-to-end model of the visual system that uses the temporal characteristics of the visual stimulus as the model input and the corresponding EEG time series as the model output. This preliminary model was able to reproduce temporal and spectral characteristics of the EEG and serves as a proof of concept for the development of future artificial neural network or biophysical models that incorporate spatio-temporal information