2,111 research outputs found

    Work of the Committee on the Nature of Accounting Services, A Talk before Spring Meeting of Council, May 3, 1972

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    https://egrove.olemiss.edu/aicpa_assoc/2086/thumbnail.jp

    Problem with auditing is... (The stuff dreams are made of)

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    https://egrove.olemiss.edu/dl_proceedings/1016/thumbnail.jp

    Public Confidence in Private Enterprise -- Let\u27s Keep It. An Address Before The Economic Club of Detroit, March 11, 1968

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    https://egrove.olemiss.edu/aicpa_guides/2540/thumbnail.jp

    Object Detection for Agricultural and Construction Environments Using an Ultrasonic Sensor

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    This study tested an ultrasonic sensor‘s ability to detect several objects commonly encountered in outdoor agricultural or construction environments: a water jug, a sheet of oriented strand board (OSB), a metal fence post, a human model, a wooden fence post, a Dracaena plant, a juniper plant, and a dog model. Tests were performed with each target object at distances from 0.01 to 3 m. Five tests were performed with each object at each location, and the sensor‘s ability to detect the object during each test was categorized as undetected, intermittent, incorrect distance, good. Rigid objects that presented a larger surface area to the sensor, such as the water jug and OSB, were better detected than objects with a softer surface texture, which were occasionally not detected as the distance approached 3 m. Objects with extremely soft surface texture, such as the dog model, could be undetected at almost any distance from the sensor. The results of this testing should help designers of future systems for outdoor environments, as the target objects tested can be found in nearly any agricultural or construction environment

    Congenital Supravalvular Pulmonic Stenosis, Maybe or Maybe Not

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    Introduction: It is extremely rare for leiomyosarcomas to affect the cardiovascular system. High degree of suspicion is required to diagnose this tumor in patients presenting with symptoms suggestive of a cardiac etiology. Because of the high mortality associated with this malignancy, early and aggressive intervention is crucial. Furthermore, imaging modalities may not adequately identify this tumor, as will be presented in this case leading challenges in diagnosis. Case: We present a case of a 59 year old female with a history of hypothyroidism who presented with progressive exertional dyspnea and palpitations. She underwent a chest CT which excluded pulmonary embolism but revealed diffuse long tubular narrowing above pulmonary valve involving main pulmonary artery raising suspicion forsupravalvularpulmonic stenosis. A 2D echocardiogram revealed normal left and right ventricular function, elevated systolic velocities distal to the pulmonic valve suggestive of supra-valvularpulmonary artery stenosis. A cardiac MRI was performed conforming pulmonary artery narrowing of the main pulmonary artery 1 cm above the pulmonic valve, with the narrowest area measuring 9mm in diameter. The pulmonic valve appeared uninvolved. She underwent a cardiac catheterization which demonstrated a peak gradient of 67 mm Hg across the stenotic lesion in the main PA. She was then diagnosed as symptomatic congenital isolated supra-valvularpulmonic stenosis. She was referred for cardiac surgery for relief of supra-valvularstenosis and reconstruction of the main pulmonary artery. Intraoperatively, a segment of the pulmonary artery was circumferentially narrowed by an infiltrative process. Frozen section analysis confirmed sarcoma, possible spindle cell variant. The main pulmonary artery was resected to the level of the pulmonary artery bifurcation, and a 23 mm aortic homograft was sewed in place. Subsequent biopsy revealed high grade spindle cell sarcoma, with morphologic features suggestingleiomyosarcoma. Re-review of the CT and MRI failed to conclusively predict the presence of this encircling tumor around pulmonary artery. Following surgery and recovery, she underwent a PET scan which demonstrated a small lytic lesion at L1, with possible metastatic femoral neck lesion. She was seen by hematology/oncology with recommendations to undergo localized radiotherapy and chemotherapy. Patient delayed treatment for her sarcoma in anticipation of a second opinion, and she ultimately passed away. Discussion: Leiomyosarcoma involving the pulmonary artery is extremely rare and usually manifests as a filling defect involving the pulmonary artery, mimicking a pulmonary embolism. In this case, multiple imaging studies were performed including a CT, MR and TTE, all of which failed torevealedthe extrinsic circumferential compression of the main pulmonary artery. In patients that do not have a congenital cardiac history (iepulmonic stenosis), a high degree of suspicion is required to rule out extrinsic compression by a tumor, as was evident in our case.https://scholarlycommons.henryford.com/merf2019caserpt/1008/thumbnail.jp

    The diversity of spiral galaxies explained

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    An extensive catalog of spatially-resolved galaxy rotation curves and multi-band optical light profiles for 1752 observed spiral galaxies is assembled to explore the drivers of diversity in galaxy structural parameters, rotation curve shapes, and stellar mass profiles. Similar data were extracted from the NIHAO galaxy simulations to identify any differences between observations and simulations. Several parameters, including the inner slope "S" of a rotation curve (RC), were tested for diversity. Two distinct populations are found in observed and simulated galaxies; (i) blue, low mass spirals with stellar mass M* < 10^9.3 Msol and roughly constant "S", and (ii) redder, more massive and more diverse spirals with rapidly increasing "S". In all cases, the value of "S" seems equally contributed by the baryonic and non-baryonic (dark) matter. Diversity is shown to increase mildly with mass. Numerical simulations reproduce well most baryon-dominated galaxy parameter distributions, such as the inner stellar mass profile slope and baryonic scaling relations, but they struggle to match the full diversity of observed galaxy rotation curves (through "S") and most dark-matter-dominated parameters. To reproduce observations, the error broadening of the simulation's intrinsic spread of RC metrics would have to be tripled. The differences in various projections of observed and simulated scaling relations may reflect limitations of current sub-grid physics models to fully capture the complex nature of galaxies. For instance, AGNs are shown to have a significant effect on the shapes of simulated RCs. The inclusion of AGN feedback brings simulated and observed inner RC shapes into closer agreement.Comment: 22 pages, 14 figures, submitted to MNRAS, comments welcom

    Are Oklahoma combines operating efficiently?

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    The Oklahoma Cooperative Extension Service periodically issues revisions to its publications. The most current edition is made available. For access to an earlier edition, if available for this title, please contact the Oklahoma State University Library Archives by email at [email protected] or by phone at 405-744-6311

    Comparison of Chlorine and Chloramine in the Release of Mercury from Dental Amalgam

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    In drinking water treatments, a form of chlorine is used for disinfection so that bacteria do not contaminate pipes. Most drinking water treatment plants use chlorine (HOCl/OCl-), but some have switched to monochloramine (NH2Cl). Although chlorine is a stronger germicide, monochloramine is more stable in water, and thus more effective, especially in large drinking water distribution systems. Another well-known trait of chlorine and monochloramine is their ability to mobilize mercury. ISTC partnered with researchers from the Naval Institute for Dental and Biomedical Research to see how chlorine and chloramine would affect the mobilization of mercury from dental amalgams in wastewater. Full results published in Stone, Mark E., et al (2009). "Comparison of chlorine and chloramine in the release of mercury from dental amalgam." Science of the Total Environment 407(2), 770-775. https://doi.org/10.1016/j.scitotenv.2008.09.041Ope

    Get your nitrogen-rich strips out early

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    Plant and Soil Science

    Global public policy, transnational policy communities, and their networks

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    Public policy has been a prisoner of the word "state." Yet, the state is reconfigured by globalization. Through "global public–private partnerships" and "transnational executive networks," new forms of authority are emerging through global and regional policy processes that coexist alongside nation-state policy processes. Accordingly, this article asks what is "global public policy"? The first part of the article identifies new public spaces where global policies occur. These spaces are multiple in character and variety and will be collectively referred to as the "global agora." The second section adapts the conventional policy cycle heuristic by conceptually stretching it to the global and regional levels to reveal the higher degree of pluralization of actors and multiple-authority structures than is the case at national levels. The third section asks: who is involved in the delivery of global public policy? The focus is on transnational policy communities. The global agora is a public space of policymaking and administration, although it is one where authority is more diffuse, decision making is dispersed and sovereignty muddled. Trapped by methodological nationalism and an intellectual agoraphobia of globalization, public policy scholars have yet to examine fully global policy processes and new managerial modes of transnational public administration
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