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Seasonal variation in nutrient availability and uptake by oak saplings following four nitrogen treatments on Missouri River floodplain
(University of Missouri--Columbia, 2008)
. Treatments included applying 83 g 20N-10P-10K as slow-release ammonium nitrate, 87 g 19N-6P-9K slow-release urea, interplanting with two nitrogen-fixing false indigo seedlings, or left untreated. After analysis, foliar nitrogen averaged 1.9 percent for pin...
Advanced modeling and optimal control of a cart-double pendulum system
(University of Missouri--Columbia, 2019)
of this research is to design a controller that provides both energy and error minimization for the cart-pendulum, so that its payload moves as if it were floating freely in a microgravity environment (according to Newton's 1st law). The Euler-Lagrange equation...
Using nested structures to select models for developmental trajectories of cognitive abilities in adulthood
(University of Missouri--Columbia, 2010)
Change over time can be modeled through a variety of statistical techniques including, but not limited to, linear or quadratic slope-intercept (SI), repeated-measures MANOVA, and single-factor growth models. Choice of ...
Interactivity and personalization in product presentation on e-commerce websites
(University of Missouri--Columbia, 2005)
Growing interest in e-commerce necessitates research to determine how to effectively use this medium. Of the features on these websites, product presentation is an important form of advertising. This research focuses on ...
Tensile strength, shear strength, and effective stress for unsaturated sand
(University of Missouri--Columbia, 2006)
It is generally accepted in geotechnical engineering that non-cohesive materials such as sands exhibit no or negligible tensile strength. However, there is significant evidence that interparticle forces arising from capillary ...
Home schooling in the Show-me-State: a preliminary study of perceptions and academic performance
(University of Missouri--Columbia, 2005)
[ACCESS RESTRICTED TO THE UNIVERSITY OF MISSOURI AT AUTHOR'S REQUEST.] The purpose of this mixed methods case study was two-fold: first, in regards to home schooling, an exploratory study of analyzing educational policy ...
Food 'four' thought : examining sigma-1 receptor antagonist PD144418 on food reinforced behaviors
(University of Missouri--Columbia, 2020)
, or work, for food pellets but has no impact on the consumption of freely available food pellets. Such effects on motivational effort to work for food occur regardless of sex. However, alterations in physiological factors, such as energy intake, appear...
Hierarchical spatio-temporal models for environmental processes
(University of Missouri--Columbia, 2007)
using a hierarchical modeling framework where a complex problem is decomposed into a series of simpler problems that are linked through rules of probability. In this dissertation, hierarchical spatio-temporal models are developed and utilized...
An analysis of cohort models in technical education at Kansas City Kansas Community College
(University of Missouri--Columbia, 2021)
This mixed method study was conducted to gain a better understanding of technical educational center (TEC) cohort programs at a midwestern urban community college. In a cohort model, the students start a program and progress ...
An integrative approach to study the safety issues of food products imported from China
(University of Missouri--Columbia, 2012)
The role of China as one source of U.S. food imports is becoming more and more important, but in recent years there have been several serious incidents about safety issues of food imported from China. This dissertation aims at finding solution...
Motivational differences between self-reported user groups of the MKT Nature and Fitness Trail
(University of Missouri--Columbia, 2007)
The purpose of this study was to determine if there are any significant differences between the walkers, runners, and cyclists using the MKT Nature and Fitness Trail in Columbia, Missouri. This study helps describe the ...
The sublethal effects of ecdysone agonists on the attractiveness, responsiveness, fertility and fecundity of oriental fruit moth, a comparative examination with codling moth on larval feeding damage
(University of Missouri--Columbia, 2006)
The ecdysone agonists methoxyfenozide and tebufenozide are designed to affect the larval stage of Lepidopteran pests. Recent studies have reported sublethal effects on the adults of several tortricid apple tree pests exposed ...
A quantitative program evaluation of the impact of a three-teacher act preparatory model at a midwestern suburban high school
(University of Missouri--Columbia, 2019)
The purpose of this study was to determine whether an ACT prep program taught by three teachers at a Midwestern U.S. high school, each with certification in the ACT subtest topic they taught, generated statistically ...
Integrated clinical decision support : assessing opportunities and outcomes
(University of Missouri--Columbia, 2019)
on 766 medical calculators implemented online were collected, analyzed, and categorized by their input types, method of presenting results, and advisory nature of those results. Reference rate, publication year, and availability of references were...
Longitudinal assessment of age-related change in the dental pulp chamber and age estimation using dental radiographs
(University of Missouri--Columbia, 2007)
This dissertation presents a new and practical method of adult age estimation with successful tests of its validity and repeatability. Six qualitative criteria evident in oral radiographs were developed from 37 subjects represented on three...
Flourescent molecular rotors as mechanosensors in biofluids
(University of Missouri--Columbia, 2005)
Many disease states have associated blood viscosity changes. Molecular rotors, fluorescent molecules with viscosity sensitive quantum yields, have recently been investigated as a new method for biofluid viscosity measurement. ...
Design of distribution channel: direct sale vs. mixed sale
(University of Missouri--Columbia, 2005)
The design of the distribution channel is one of main decisions for manufacturers and should be determined in the early stage of the production. In this paper, two types of channel distributions are suggested for single ...
Simplified model for reinforced concrete beams under catenary action
(University of Missouri--Columbia, 2010)
The purpose of this research is to develop simplified models to predict the load displacement behavior for any reinforced concrete beam on the basis of material, geometric, and design parameters. The proposed simplified ...
Real-time speaker-independent large vocabulary continuous speech recoginition
(University of Missouri--Columbia, 2005)
In this dissertation, a real-time decoding engine for speaker-independent large vocabulary continuous speech recognition (LVCSR) is presented. Three indispensable and correlated performance measurements -- accuracy, speed, and memory cost...
Geotextile wrap-face wall using marginal backfill
(University of Missouri--Columbia, 2006)
A concrete retaining wall was constructed during October/November 2005. The height of the wall was 9 feet with a stem width of 0.83 ft, while the width of the base was 1.83 ft. The backfill was a low plasticity clay (CL). As a result of this design...