671 research outputs found

    Where Are They Now(?): Two Decades of Longitudinal Outcome Assessment Data Linking Positive Student, Graduate Student, Career and Life Trajectory Decisions to Participation in Intercollegiate Competitive Debate

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    In 1997, Rogers (2002, 2007) launched an ambitious cohort-based study to specifically measure student outcomes from forensic participation with direct, empirical comparisons between a debate and non-debate group over an extended period through college, graduate school, professional careers, and life-trajectory decisions. This monograph offers a continuation of those earlier studies in order to provide almost two decades of empirical performance data and outcomes. In order for the reader to place the current study in context, it is helpful to review a brief update of the applicable literature and a brief explanation of the previous two studies before attempting to interpret new data

    Quaking Aspen in the Residential-Wildland Interface: Elk Herbivory Hinders Forest Conservation

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    Quaking aspen (Populus tremuloides Michx.) forests are experiencing numerous impediments across North America. In the West, recent drought, fire suppression, insects, diseases, climate trends, inappropriate management, and ungulate herbivory are impacting these high biodiversity forests. Additionally, ecological tension zones are sometimes created where the above factors intermingle with jurisdictional boundaries. The public-private land interface may result in stress to natural areas where game species find refuge and plentiful forage at the expense of ecosystem function. We examined putative herbivore impacts to aspen forests at Wolf Creek Ranch (WCR), a large residential landscape in northern Utah. Forty-three ha-1 monitoring plots were established to measure a range of attributes summarizing location description, tree and vegetation condition, and herbivore presence. Additionally, we tested the ability of a stand-level visual rating system to represent more detailed field measures. Elk (Cervus elaphus L.) herbivory is currently having a strong effect on aspen in the study area, reducing many locations to single-layer aspen forests dominated by aging canopy trees. Regeneration (\u3c 2 m stems) is experiencing moderate-to-high browse and recruitment (2 - 6 m stems) are below replacement levels on approximately half of WCR\u27s aspen forests. The condition rating system represented significant trends in forest cover, canopy height, stand aspect, regeneration, recruitment, and tree mortality. Ordination of all plot and forest data found a strong negative relationship between elk presence and recruitment success. We make recommendations for addressing difficult herbivore-aspen interactions where publicly managed wildlife a present barriers to conservation of privately owned forest reserves

    Exploration and exploitation in the presence of network externalities

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    This paper examines the conditions under which exploration of a new, incompatible technologyis conducive to firm growth in the presence of network externalities. In particular, this studyis motivated bythe divergent evolutions of the PC and the workstation markets in response to a new technology: reduced instruction set computing (RISC). In the PC market, Intel has developed new microprocessors bymaintaining compatibilitywith the established architecture, whereas it was radicallyr eplaced byRISC in the workstation market. History indicates that unlike the PC market, the workstation market consisted of a large number of power users, who are less sensitive to compatibilitythan ordinaryusers. Our numerical analysis indicates that the exploration of a new, incompatible technologyis more likelyto increase the chance of firm growth when there are a substantial number of power users or when a new technologyis introduced before an established technologytakes off. (; ; ;

    Statement of the Third International Exercise-Associated Hyponatremia Consensus Development Conference, Carlsbad, California, 2015

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    The third International Exercise-Associated Hyponatremia (EAH) Consensus Development Conference convened in Carlsbad, California in February 2015 with a panel of 17 international experts. The delegates represented 4 countries and 9 medical and scientific sub-specialties pertaining to athletic training, exercise physiology, sports medicine, water/sodium metabolism, and body fluid homeostasis. The primary goal of the panel was to review the existing data on EAH and update the 2008 Consensus Statement.1 This document serves to replace the second International EAH Consensus Development Conference Statement and launch an educational campaign designed to address the morbidity and mortality associated with a preventable and treatable fluid imbalance. The following statement is a summary of the data synthesized by the 2015 EAH Consensus Panel and represents an evolution of the most current knowledge on EAH. This document will summarize the most current information on the prevalence, etiology, diagnosis, treatment and prevention of EAH for medical personnel, athletes, athletic trainers, and the greater public. The EAH Consensus Panel strove to clearly articulate what we agreed upon, did not agree upon, and did not know, including minority viewpoints that were supported by clinical experience and experimental data. Further updates will be necessary to both: (1) remain current with our understanding and (2) critically assess the effectiveness of our present recommendations. Suggestions for future research and educational strategies to reduce the incidence and prevalence of EAH are provided at the end of the document as well as areas of controversy that remain in this topic. [excerpt

    Onward and Upward: The Legacy of Black Urologists in America

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    In partnership with the American Urological Association\u27s William P. Didusch Center for Urologic History, Henry Ford Health hosted a Grand Rounds event from 7 – 9 a.m. Wednesday, June 14, in the Buerki Auditorium at Henry Ford Hospital. The event highlights the contributions of Black urologists to the history of medicine despite systemic racism in the medical field and across the country. Covering the impact of exclusion and segregation in the past, as well as present day issues such as microaggressions and cultural insensitivity, the lecture and discussion calls for a future of successfully integrating medicine to achieve better outcomes for physicians and their patients. The schedule of the event is as follows: 7 a.m.: Welcome by Craig Rogers, M.D., Chair, Department of Urology, Vattikuti Urology Institute. Introductory remarks by Adnan Munkarah, M.D., President, Care Delivery System and Chief Clinical Officer and Steven Kalkanis, M.D., CEO of Henry Ford Medical Group and CEO of Henry Ford Hospital. 7:10 a.m.: Keynote speaker Arthur L. Burnett II, M.D., MBA., FACS., professor of urology, Johns Hopkins University School of Medicine will present “Onward and Upward: The Legacy of Black Urologists in America. 7:30 a.m.: Panel discussion moderated by Linda McIntire, M.D., President, R. Frank Jones Urological Society, and graduate of Henry Ford urology program, featuring the panelists listed below. Melvin Hollowell, M.D., FACS Dr. Hollowell earned his medical degree in 1959 and has practiced in Detroit for 64 years. At 93 years young, he is still practicing today. Isaac Powell, M.D. Dr. Powell graduated with his medical degree in 1969 and became the first African American graduate from the Henry Ford Hospital urology program in 1974. Conrad Maitland, M.D. Dr. Maitland has been practicing for 40 years and is himself a survivor of prostate cancer - a disease that disproportionately affects Black men. Ray Littleton, M.D. Dr. Littleton joined the senior staff at Henry Ford Hospital in 1980 and helped pioneer minimally invasive surgery by performing the first percutaneous kidney stone removal in Michigan in 1983

    Higher carbohydrate intake is associated with increased risk of allâ cause and diseaseâ specific mortality in head and neck cancer patients: results from a prospective cohort study

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    Peer Reviewedhttps://deepblue.lib.umich.edu/bitstream/2027.42/145268/1/ijc31413.pdfhttps://deepblue.lib.umich.edu/bitstream/2027.42/145268/2/ijc31413-sup-0001-suppinfo01.pdfhttps://deepblue.lib.umich.edu/bitstream/2027.42/145268/3/ijc31413_am.pd

    Configuring robust DNA strand displacement reactions for in situ molecular analyses

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    The number of distinct biomolecules that can be visualized within individual cells and tissue sections via fluorescence microscopy is limited by the spectral overlap of the fluorescent dye molecules that are coupled permanently to their targets. This issue prohibits characterization of important functional relationships between different molecular pathway components in cells. Yet, recent improved understandings of DNA strand displacement reactions now provides opportunities to create programmable labeling and detection approaches that operate through controlled transient interactions between different dynamic DNA complexes. We examined whether erasable molecular imaging probes could be created that harness this mechanism to couple and then remove fluorophore-bearing oligonucleotides to and from DNA-tagged protein markers within fixed cell samples. We show that the efficiency of marker erasing via strand displacement can be limited by non-toehold mediated stand exchange processes that lower the rates that fluorophore-bearing strands diffuse out of cells. Two probe constructions are described that avoid this problem and allow efficient fluorophore removal from their targets. With these modifications, we show one can at least double the number of proteins that can be visualized on the same cells via reiterative in situ labeling and erasing of markers on cells
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