1,602 research outputs found

    Nutrients and chlorophyll dynamics in Fort Cobb Reservoir

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    The entire dissertation/thesis text is included in the research.pdf file; the official abstract appears in the short.pdf file (which also appears in the research.pdf); a non-technical general description, or public abstract, appears in the public.pdf file.Title from title screen of research.pdf file (viewed on March 31, 2008)Includes bibliographical references.Thesis (M.S.) University of Missouri-Columbia 2007.Dissertations, Academic -- University of Missouri--Columbia -- Fisheries and wildlife

    Risk factors for carpal tunnel syndrome

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    Thesis (M.S.)--University of Missouri-Columbia, 1993Includes bibliographical references (leaves 99-102)Dissertations, Academic -- University of Missouri--Columbia -- Industrial engineeringCarpal tunnel syndrome (CTS) is a common type of neuropathy in which the median nerve is compressed within the carpal tunnel at the wrist. The incidence of carpal tunnel syndrome in the work place is called occupational carpal tunnel syndrome (OCTS). OCTS is a multifactorial cumulative trauma disorder. This disorder is linked to occupational factors, clinical factors, and personal factors. Our objective is in quantifying factors and predicting the incidence of OCTS. Statistical procedures, back propagation method of neural network, and fuzzy aggregate operator have been adapted to quantify factors and predict the incidence of OCTS

    Erdős distance problem in the hyperbolic half-plane

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    The entire thesis text is included in the research.pdf file; the official abstract appears in the short.pdf file; a non-technical public abstract appears in the public.pdf file.Title from PDF of title page (University of Missouri--Columbia, viewed on January 14, 2010).Thesis advisor: Dr. Alex Iosevich.Includes bibliographical references.M.A. University of Missouri--Columbia 2009.Dissertations, Academic -- University of Missouri--Columbia -- Mathematics.The Erd̋os distance problem asks for the minimum number of distinct distances determined by large finite point sets in the plane. The aim of this work is to investigate how the classical techniques employed in the study of the Erdős distance problem carry over to the hyperbolic half-plane

    Commercial grain merchandisers: interest in professional development

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    The entire thesis text is included in the research.pdf file; the official abstract appears in the short.pdf file; a non-technical public abstract appears in the public.pdf file.Title from PDF of title page (University of Missouri--Columbia, viewed on December 29, 2009).Thesis advisor: Dr. Joe L. Parcell.Includes bibliographical references.M.S. University of Missouri--Columbia 2009.Dissertations, Academic -- University of Missouri--Columbia -- Agricultural economics.Little information exists on grain merchandisers, their characteristics, and the skills needed to be successful. This research contributes toward filling this gap. A summary of survey responses from 230 experienced grain merchandisers quantifies personal characteristics, skills perceived as important, and desire for executive education. Parametric analyses identify factors contributing to merchandisers' salaries and their interest in establishing a certification process. Interestingly, experience but not formal education significantly enhances salaries

    The impact of gender on the use of metaphors in media reports covering the 2003 Gulf War in Iraq

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    The entire dissertation/thesis text is included in the research.pdf file; the official abstract appears in the short.pdf file (which also appears in the research.pdf); a non-technical general description, or public abstract, appears in the public.pdf file.Title from title screen of research.pdf file (viewed on August 23, 2007)Includes bibliographical references.Thesis (M.A.) University of Missouri-Columbia 2006.Dissertations, Academic -- University of Missouri--Columbia -- Journalism.This study investigates whether gender of the reporter or the source has an impact on the metaphors that are used in media reports on the 2003 war in Iraq. War metaphors previously exposed by other research are explored and analyzed, and a search for newly emerging metaphors was conducted to discover if women's increased presence in the media and the military is impacting the language of the reports of war in the media

    Empirical likelihood approach estimation of structural equation models

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    The entire thesis text is included in the research.pdf file; the official abstract appears in the short.pdf file; a non-technical public abstract appears in the public.pdf file.Title from PDF of title page (University of Missouri--Columbia, viewed on September 15, 2009).Thesis advisor: Dr. Stanislav Kolenikov.Includes bibliographical references.M.A. University of Missouri--Columbia 2007.Dissertations, Academic -- University of Missouri--Columbia -- Statistics.This thesis provides a preliminary investigation of empirical likelihood approach estimation of structural equation models. An auxiliary variable approach built on general estimating equation methods in the EL settings is followed. An auxiliary variable is proposed and estimation/inference based upon it is developed. Testing of model covariance structure for over-identified model is suggested. Asymptotic efficiency connection with Un-weighted Least Squares estimator and multi-normal MLE is established. Estimation example of non-elliptical distribution data is provided

    Automating traffic studies at modern roundabouts: a feasibility study

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    The entire dissertation/thesis text is included in the research.pdf file; the official abstract appears in the short.pdf file (which also appears in the research.pdf); a non-technical general description, or public abstract, appears in the public.pdf file.Title from title screen of research.pdf file (viewed on May 12, 2009)Includes bibliographical references.Thesis (M.S.) University of Missouri-Columbia 2007.Dissertations, Academic -- University of Missouri--Columbia -- Civil engineering.The modern roundabout is growing in popularity as an alternative intersection design, however it presents engineers a new quandary. At a traditional intersection, traffic movements may more easily counted given vehicle spacing, lane demarcations, and signal phasing. At a roundabout, counting techniques are much different. This research builds on other academic research to prove the feasibility of creating an automated traffic counting solution that is comprised of readily available parts, and a heuristic computer algorithm

    Self concept screening: a predictor to depression

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    Title from PDF of title page (University of Missouri--Columbia, viewed on Feb 18, 2010).The entire thesis text is included in the research.pdf file; the official abstract appears in the short.pdf file; a non-technical public abstract appears in the public.pdf file.Thesis advisor: Dr. Stephen Whitney.Includes bibliographical references.M.A. University of Missouri--Columbia 2009.Dissertations, Academic -- University of Missouri--Columbia -- Educational and couseling psychology.Low self-concept is commonly identified as a symptom of depression. Research has found a high level of comorbidity between low self-concept and depression. However, which precedes the other? Research demonstrates that low self-concept acts as a filter in judging a situation, precipitating feelings of depression. Thus, low self-concept can be utilized as an early indicator of depressive symptoms. This research analyzes a model that examines low self-concept as a predictor of later depressive symptoms in school-aged children

    Finite element analysis of residual stress generation during spot welding and its affect on fatigue behavior of spot welded joints

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    The entire dissertation/thesis text is included in the research.pdf file; the official abstract appears in the short.pdf file (which also appears in the research.pdf); a non-technical general description, or public abstract, appears in the public.pdf file.Title from title screen of research.pdf file viewed on (November 13, 2006)Includes bibliographical references.Vita.Thesis (Ph. D.) University of Missouri-Columbia 2005.Dissertations, Academic -- University of Missouri--Columbia -- Mechanical and aerospace engineering.This dissertation presents the finite element based prediction of residual stress generation in a spot welded joint during the spot welding process and the effects of residual stress on fatigue behavior of a spot welded joint. Spot welded advanced high strength steels, namely dual phase DP600 GI and transformation induced plasticity TRIP600 steels were investigated for their fatigue life, microstructure changes and fatigue fracture mechanisms to develop design data for possible application in future light weight and more fuel efficiency automobiles

    Structure and synthesis of four supramolecular structures involving Cu(I) and 4,7-phenanthroline

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    The entire dissertation/thesis text is included in the research.pdf file; the official abstract appears in the short.pdf file (which also appears in the research.pdf); a non-technical general description, or public abstract, appears in the public.pdf file.Title from title screen of research.pdf file (viewed on October 26, 2007)Vita.Includes bibliographical references.Thesis (M.S.) University of Missouri-Columbia 2007.Dissertations, Academic -- University of Missouri--Columbia -- Chemistry.The design and synthesis of supramolecular species with discrete geometric shapes has been an area of much interest and research in recent years. Three isolated species of square shaped molecules and one infinite network of covalently bonded squares are presented. The four structures are all obtained from [Cu(MeCN)â‚„]BFâ‚„ and 4,7-phenanthroline, with differences in the ratio of starting material, solvents, and set ups of these materials resulting in the differences in structure. Synthesis conditions, crystal data, comparisons, and pictures of the structures are all included
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