Temporal comparison of greenhouse gas emissions between four different riparian land-use types in southern Ontario, Canada

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The Braided Heisenberg Group

We compute the braided groups and braided matrices $B(R)$ for the solution $R$ of the Yang-Baxter equation associated to the quantum Heisenberg group. We also show that a particular extension of the quantum Heisenberg group is dual to the Heisenberg universal enveloping algebra $U_{q}(h)$, and use this result to derive an action of $U_{q}(h)$ on the braided groups. We then demonstrate the various covariance properties using the braided Heisenberg group as an explicit example. In addition, the braided Heisenberg group is found to be self-dual. Finally, we discuss a physical application to a system of n braided harmonic oscillators. An isomorphism is found between the n-fold braided and unbraided tensor products, and the usual `free' time evolution is shown to be equivalent to an action of a primitive generator of $U_{q}(h)$ on the braided tensor product.Comment: 33 page

Henri Temianka Correspondence; (lte)

This collection contains material pertaining to the life, career, and activities of Henri Temianka, violin virtuoso, conductor, music teacher, and author. Materials include correspondence, concert programs and flyers, music scores, photographs, and books.https://digitalcommons.chapman.edu/temianka_correspondence/3060/thumbnail.jp

Prolonged Exposure to Microgravity Increases Susceptibility to Traumatic Brain Injury

With the prospect of semi-permanent and permanent habitable fixtures on the moon and Mars, the complications associated with long-term exposure to microgravity should be investigated exhaustively. Spaceflight Associated Neuro-Ocular Syndrome (SANS), a group of neurological and ocular effects resulting from prolonged exposure to microgravity, is characterized by significant fluid shifts into the cranium, namely cerebrospinal fluid and blood, and an upward shift of the brain relative to the skull. This syndrome, along with its immediate effects on visual acuity, cognitive ability, and motor function are recognized by NASA, but its effects on susceptibility to traumatic brain injury have yet to be studied. Using a biofidelic human body model (Toyota Human Model for Safety, or THuMS) along with a structural finite element analysis software (LS-Dyna), we were able to replicate the effects of microgravity on cerebral structures and subject the SANS-altered models to a variety of loading events. An unmodified THuMS model was used as a control for each injury event. Here we report that the pre-strained condition associated with an influx of CSF into the third and lateral ventricles results in an increased risk of traumatic brain injury according to four injury metrics. This data serves as a preliminary study into the effects of microgravity on susceptibility to traumatic brain injury. As the promise of creating a spacefaring society becomes more realistic, steps may be required to mitigate the effects of long-term microgravity exposure on susceptibility to traumatic brain injury

Action Research For Information Systems

This tutorial provides an introduction and “how-to” overview of the action research methodology within the context of information technology and qualitative information systems research. The introductory material will deal with conflicting definitions of action research and the appropriate application of this technique in particular information technology settings. The how-to overview will focus on the participatory and clinical forms of action research. The practical overview will conclude with a discussion of criteria for evaluating the effectiveness of action research and the relationship between action research and consulting