2,511 research outputs found

    Equidistribution and the Riemann hypothesis

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    In this paper we demonstrate the relationship between uniform distribution modulo 1 of the sequence cpαcp^{\alpha}, pp prime, and the zero free regions of the Riemann zeta function

    Finite dimensional rings of quotients

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    In this paper we characterize commutative rings with finite dimensional classical ring of quotients. To illustrate the diversity of behavior of these rings we examine the case of local rings and FPF rings. Our results extend earlier work on rings with zerodimensional rings of quotients

    John Adams and the Diplomacy of the American Revolution

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    The figure of John Adams looms large in American foreign relations of the Revolutionary and post-Revolutionary years. James H. Hutson captures this elusive personality of this remarkable figure, highlighting the triumphs and the despairs that Adams experienced as he sought—at times, he felt, single-handedly—to establish the new Republic on a solid footing among the nations of the world. Benjamin Franklin, thirty years Adams’s senior and already a world-respected figure, was his personal nemesis, seeming always to dog his steps in his diplomatic missions. The diplomacy of the American Revolution as exemplified by John Adams was not radically revolutionary or peculiarly American. Whereas the prevailing progressive interpretation of Revolutionary diplomacy sees it as repudiating the standard European theories and practices, Hutson finds that Adams adhered consistently to a policy that was in fact basically European and conservative. Adams assumed—as did his contemporaries—that power was aggressive and that it should be contained in a balance, so his actions while in diplomatic service were generally directed toward this goal. Adams’s basic ideas survived his turbulent diplomatic missions with undiminished coherence. For him the value of the protective system of the balance of power—having been tested in the harsh theater of European diplomacy—was indisputable and could be applied to domestic political arrangements as well as to international relations. James H. Hutson is supervisory librarian at the Library of Congress. He has taught history at Yale University and served as assistant editor of The Papers of Benjamin Franklin.https://uknowledge.uky.edu/upk_diplomatic_history/1003/thumbnail.jp

    Measuring the speed and efficacy of clinical decision making when comparing two different data visualizations for medications

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    Dissertation supervisor: Dr. Suzanne Boren.Includes vita.Background: The percentage of patients with polypharmacy needs is increasing among a growing patient population. As a result, the amount of time health care professionals require to make clinical decisions based on current and past medications is increasing. Health care professionals need methods for increasing the speed of clinical decision making without sacrificing the quality of care. The goal of this study is to demonstrate how modifying the data visualization for patient medication histories will change decision making speed or efficacy. Methods: We compared two groups across five randomized blocks. Group 1 responded to questions based on the control data visualizations derived from an existing electronic health record. Group 2 responded to questions based on the experimental data visualization based on a medication history developed by a team led by Dr. Jeffrey Belden. All medical information presented to both groups is identical. Each block represents a core clinical task associated with leveraging the medication history for a clinical decision extrapolated from anecdotal scenarios in primary care. Block 1 asks the participant to identify current prescriptions. Block 2 asks the participant to identify past prescriptions. Block 3 asks the participant to identify the length of time a patient has been prescribed a specific drug. Block 4 asks the participant to identify all new prescriptions in a given time interval. Block 5 asks the participant to identify a dosage change for any prescription in a given time interval. Each block holds two questions, identical in wording, differing only on the visualization presented to the participant. The survey is configured to randomly present one question from each block to each participant. Regardless of the question presented, we additionally track the response time for each block measured as the last click on the survey page before the "submit" or "next" button is clicked. Participants are shown only one question per page to increase the relevance of time tracking. Results: Twenty-three participants enrolled in the study. A total of 112 observations were collected across five randomized blocks. The average task time for control was 1366.3+/-10.35 and the average response time for treatment 1773.23+/-10.4; however, the T-value was -1.313, thus the results were not statistically significant. The average task correctness for control was 30.61% and the average task correctness for treatment was 66.67% with a p-value of 0.000502. Conclusions: Task correctness saw a significant increase in the probability for a correct response when using the treatment visualization versus the control visualization. Additional research is required to determine the effect of the treatment visualization on task time. The findings may have a significant impact on how medication histories are presented to care provided through the electronic health record.Includes bibliographical references (pages 65-70)

    Functional design for operational earth resources ground data processing

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    The author has identified the following significant results. Study emphasis was on developing a unified concept for the required ground system, capable of handling data from all viable acquisition platforms and sensor groupings envisaged as supporting operational earth survey programs. The platforms considered include both manned and unmanned spacecraft in near earth orbit, and continued use of low and high altitude aircraft. The sensor systems include both imaging and nonimaging devices, operated both passively and actively, from the ultraviolet to the microwave regions of the electromagnetic spectrum

    ArnHF van der Waals clusters revisited: II. Energetics and HF vibrational frequency shifts from diffusion Monte Carlo calculations on additive and nonadditive potential-energy surfaces for n=1-12

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    The ground-state energies and HF vibrational frequency shifts of ArnHF clusters have been calculated on the nonadditive potential-energysurfaces (PESs) for n=2-7 and on the pairwise-additive PESs for the clusters with n=1-12, using the diffusionMonte Carlo (DMC) method. For n>3, the calculations have been performed for the lowest-energy isomer and several higher-lying isomers which are the closest in energy. They provide information about the isomer dependence of the HF redshift, and enable direct comparison with the experimental data recently obtained in helium nanodroplets. The agreement between theory and experiment is excellent, in particular, for the nonadditive DMC redshifts. The relative, incremental redshifts are reproduced accurately even at the lower level of theory, i.e., the DMC and quantum five-dimensional (rigid Arn) calculations on the pairwise-additive PESs. The nonadditive interactions make a significant contribution to the frequency shift, on the order of 10%–12%, and have to be included in the PESs in order for the theory to yield accurate magnitude of the HF redshift. The energy gaps between the DMC ground states of the cluster isomers are very different from the energy separation of their respective minima on the PES, due to the considerable variations in the intermolecular zero-point energy of different ArnHF isomers

    Effect of High-Energy Radiation on the Formation of 8- Hydroxy-Deoxyguanosine

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    The abstract for this presentation can be downloaded by clicking on the blue download button
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