This dissertation combines volcanological research of three convergent continental margins. Chapters
1 and 5 are general introductions and conclusions, respectively. Chapter 2 examines the spatiotemporal
development of the Altiplano-Puna volcanic complex in the Lípez region of southwest Bolivia, a locus of a
major Neogene ignimbrite flare- up, yet the least...
Climate changes. That’s what climate does. It is a natural and dynamic process. The National Weather Service (NWS) recognizes on-going climate change by publishing new figures for average climate every ten years. Climate averages for precipitation, temperature, and other weather parameters are computed on a 30 year basis but only...
Outreach is a small, but significant component to modern research.
Developing an exhibit for public display can be an effective way to communicate science to broad audiences, although it may be a less familiar method to scientists than writing papers or giving presentations. I outline the process of developing an...
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James A. Lerczak
Outreach is a small, but significant component to modern research
This paper compares three classes of algorithms for finding
Hamiltonian circuits in graphs. Two of the classes are exhaustive
search procedures and this study finds them to have an exponential
dependence on the size of the graph. The third class of algorithms,
based on Warnsdorff's rule, is found to be...
Previous research in program understanding has been hampered by the
lack of an easy tool to measure the degree of that understanding. The cloze
procedure, suggested by Cook, Bregar, and Foote (1984) was an attempt to find
a simple, reliable, and valid measure of program understanding. In this
procedure, tokens...
As access to potable water grows scarce, there is an increasing reliance on alternative drinking water sources, namely groundwater (WHO, 2018). Chlorinated solvents, such as 1,1,1-trichloroethane (TCA) and 1,2-cis-Dichloroethene (cisDCE) are some of the most ubiquitous groundwater contaminants spread throughout the US. 1,4-dioxane (1,4D) was used primarily in the late...
Orthopaedic soft tissue degenerative diseases significantly affect the population, especially as it ages. Degeneration is characterized by a progressive loss of extracellular matrix (ECM) components necessary for the proper functioning of the tissues and joints, eventually leading to pain and dysfunction. In humans, the intervertebral disc (IVD) and tendon are...
Widespread mercury contamination threatens aquatic ecosystem functions due to its capacity to bioaccumulate, biomagnify, and induce toxicity in food webs. Methylmercury (MeHg), the organic form of mercury, bioaccumulates more efficiently and tends to be more toxic than the inorganic form. One important impact of mercury exposure is inhibition of effective...