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Oshkosh, WI, United States

The University of Wisconsin Oshkosh is a public university in Oshkosh, Wisconsin, USA. It is part of the University of Wisconsin System and offers bachelor, master, and doctoral degrees. The University of Wisconsin Oshkosh is the third-largest university in Wisconsin. Wikipedia.


Organisciak D.T.,Petticrew Research Laboratory | Vaughan D.K.,University of Wisconsin - Oshkosh
Progress in Retinal and Eye Research | Year: 2010

By its action on rhodopsin, light triggers the well-known visual transduction cascade, but can also induce cell damage and death through phototoxic mechanisms - a comprehensive understanding of which is still elusive despite more than 40 years of research. Herein, we integrate recent experimental findings to address several hypotheses of retinal light damage, premised in part on the close anatomical and metabolic relationships between the photoreceptors and the retinal pigment epithelium. We begin by reviewing the salient features of light damage, recently joined by evidence for retinal remodeling which has implications for the prognosis of recovery of function in retinal degenerations.  We then consider select factors that influence the progression of the damage process and the extent of visual cell loss. Traditional, genetically modified, and emerging animal models are discussed, with particular emphasis on cone visual cells. Exogenous and endogenous retinal protective factors are explored, with implications for light damage mechanisms and some suggested avenues for future research. Synergies are known to exist between our long term light environment and photoreceptor cell death in retinal disease. Understanding the molecular mechanisms of light damage in a variety of animal models can provide valuable insights into the effects of light in clinical disorders and may form the basis of future therapies to prevent or delay visual cell loss. © 2009 Elsevier Ltd. All rights reserved. Source


Arbaugh J.B.,University of Wisconsin - Oshkosh
Internet and Higher Education | Year: 2013

This paper examines the relationships between the elements of the Community of Inquiry (CoI) framework, disciplinary differences, perceived learning, instructor effectiveness, and delivery medium satisfaction. Specifically, the proposed research examines whether disciplinary differences such as those proposed by Biglan (1973a, 1973b) moderate the relationships between social, cognitive, and/or teaching presence and online course outcomes. Drawing from the results of a two-year study of students in over 50 online MBA courses, we found that disciplinary effects moderated the relationships between facilitating discourse, direct instruction and perceived student learning. Disciplinary effects did moderate the relationship between CoI elements and perceptions of instructor effectiveness. As disciplines moved closer to "pure" or "hard" status, social presence became positively associated and cognitive presence became negatively associated with perceived instructor effectiveness. © 2012 Elsevier Inc. Source


Pufahl P.K.,Acadia University | Hiatt E.E.,University of Wisconsin - Oshkosh
Marine and Petroleum Geology | Year: 2012

The Great Oxidation Event (GOE) is one of the most significant changes in seawater and atmospheric chemistry in Earth history. This rise in oxygen occurred between ca. 2.4 and 2.3Ga and set the stage for oxidative chemical weathering, wholesale changes in ocean chemistry, and the evolution of multicelluar life. Most of what is known about this important event and the subsequent oxygenation history of the Precambrian Earth is based on either geochemistry or " data mining" published literature to understand the temporal abundance of bioelemental sediments. Bioelemental sediments include iron formation, chert, and phosphorite, which are precipitates of the nutrient elements Fe, Si, and P, respectively. Because biological processes leading to their accumulation often produce organic-rich sediment, black shale can also be included in the bioelemental spectrum. Thus, chemistry of bioelemental sediments potentially holds clues to the oxygenation of the Earth because they are not simply recorders of geologic processes, but intimately involved in Earth system evolution.Chemical proxies such as redox-sensitive trace elements (Cu, Cr, V, Cd, Mo, U, Y, Zn, and REE's) and the ratio of stable isotopes (δ 56Fe, δ 53Cr, δ 97/95Mo, δ 98/95Mo, δ 34S, Δ 33S) in bioelemental sediments are now routinely used to infer the oxygenation history of paleo-seawater. The most robust of these is the mass-independent fractionation of sulfur isotopes (MIF), which is thought to have persisted under essentially anoxic conditions until the onset of the GOE at ca. 2.4Ga. Since most of these proxies are derived from authigenic minerals reflecting pore water composition, extrapolating the chemistry of seawater from synsedimentary precipitates must be done cautiously.Paleoenvironmental context is critical to understanding whether geochemical trends during Earth's oxygenation represent truly global, or merely local environmental conditions. To make this determination it is important to appreciate chemical data are primarily from authigenic minerals that are diagenetically altered and often metamorphosed. Because relatively few studies consider alteration in detail, our ability to measure geochemical anomalies through the GOE now surpasses our capacity to adequately understand them.In this review we highlight the need for careful consideration of the role sedimentology, stratigraphy, alteration, and basin geology play in controlling the geochemistry of bioelemental sediments. Such an approach will fine-tune what is known about the GOE because it permits the systematic evaluation of basin type and oceanography on geochemistry. This technique also provides information on how basin hydrology and post-depositional fluid movement alters bioelemental sediments. Thus, a primary aim of any investigation focused on prominent intervals of Earth history should be the integration of geochemistry with sedimentology and basin evolution to provide a more robust explanation of geochemical proxies and ocean-atmosphere evolution. © 2011 Elsevier Ltd. Source


Arbaugh J.B.,University of Wisconsin - Oshkosh
Journal of Computer Assisted Learning | Year: 2014

Considering the increasingly challenging resource environments in many business schools, this study examined whether course technologies, learner behaviors or instructor behaviors best predict online course outcomes so that administrators and support personnel can prioritize their efforts and investments. Based on reviewing prior online and blended management education literature, we hypothesized that instructor behaviors would be most predictive of online course outcomes. However, our study of 48 online Master of Business Administration courses found that although instructor behaviors (operationalized as teaching presence) was the strongest predictor of any of our three outcome variables (perceived learning), only student behaviors (operationalized as social presence) significantly predicted all three (course grades, perceived learning and delivery medium satisfaction). Technological characteristics, operationalized using variables from the technology acceptance model and media variety, predicted perceived learning (perceived ease of use) and delivery medium satisfaction (perceived usefulness). The paper provides recommendations for instructors and administrators based on the findings, specifically advocating for a balance between instructor and administrator involvement in course design, presentation and conduct. The paper concludes by describing research opportunities regarding the roles of social presence in and collaborative approaches to online learning in business schools. © 2014 John Wiley & Sons Ltd. Source


Lammers T.G.,University of Wisconsin - Oshkosh
Annals of the Missouri Botanical Garden | Year: 2011

The infrageneric classification of the cosmopolitan genus Lobelia L. (Campanulaceae) is revised via synthesis of diverse phenotypic data. The 415 species are divided among 18 sections (numbers of included species are given in parentheses): Lobelia sect. Delostemon (E. Wimm.) J. Murata (44); Lobelia sect. Holopogon Benth. (14); Lobelia sect. Colensoa (Hook. f.) J. Murata (1); Lobelia sect. Cryptostemon (E. Wimm.) J. Murata (10); Lobelia sect. Stenotium (C. Presl) Lammers (144); Lobelia sect. Lobelia (22); Lobelia sect. Hypsela (C. Presl) Lammers (43); Lobelia sect. Mezleriopsis Lammers, sect. nov. (7); Lobelia sect. Jasionopsis Lammers, sect. nov. (1); Lobelia sect. Tylomium (C. Presl) Benth. (38); Lobelia sect. Homochilus A. DC. (5); Lobelia sect. Tupa (G. Don) Benth. (4); Lobelia sect. Trimeris (C. Presl) A. DC. (1); Lobelia sect. Speirema (Hook. f. & Thomson) Lammers (5); Lobelia sect. Plagiobotrys Lammers (1); Lobelia sect. Rhynchopetalum (Fresen.) Benth. (61); Lobelia sect. Revolutella E. Wimm. (9); and Lobelia sect. Galeatella E. Wimm. (5). In addition, Monopsis Salisb. sect. Xanthomeria (C. Presl) Lammers, comb. nov., is validated to provide the correct name for Monopsis sect. Parastranthus (G. Don) E. Wimm. Source

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