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An in depth evaluation of internal criteria for determining the number of clusters in a data set
(University of Missouri--Columbia, 2018)
[ACCESS RESTRICTED TO THE UNIVERSITY OF MISSOURI AT AUTHOR'S REQUEST.] Clustering procedures partition data sets into groups, minimizing the distance within clusters while maximizing the distance between clusters. Clustering can be a powerful tool...
An evaluation of pre- and post-timber harvest water quality in low-order streams in the Missouri Ozarks
(University of Missouri--Columbia, 2009)
Missouri Department of Conservation's (MDC) best management practices (BMPs) for Regenerative Oak Clear Cutting (ROCC) practice was evaluated on effectiveness to preserve downstream water quality. Fifteen sites, located on MDC lands in Shannon...
Ambulatory assessment of physical pain, emotional distress, and alcohol use
(University of Missouri--Columbia, 2018)
[ACCESS RESTRICTED TO THE UNIVERSITY OF MISSOURI AT AUTHOR'S REQUEST.] The available research suggests that many individuals with chronic pain drink alcohol to manage their pain. However, few studies have examined the association of alcohol and pain...
Rheological and morphological evolution of basaltic lava flows
(University of Missouri--Columbia, 2018)
question of how pre-existing topography controls lava flow system structure in volume-limited flows (Soldati et al., accepted). I concluded that a steep slope results in a single, stable channel, whereas a gentle slope results in an unstable, braided...
Disentangling alcohol-specific alcohol use disorder criteria from externalizing psychopathology using an empirically driven approach
(University of Missouri--Columbia, 2020)
Within current mental disorder classification systems, alcohol use disorder (AUD) and psychopathology, more broadly, are conceptualized as distinct categorical disorders. Recent classification research has focused on ...
Flexure shear response in fatigue of fiber reinforced concrete beams with FRP tensile reinforcement
(University of Missouri--Columbia, 2007)
of polypropylene fibers by volume, individual compressive tests were performed on both lab-mix and ready mix concrete specimens. In the lab, concrete mixes with 0.0%, 0.5%, and 1.0% by volume, fibrillated polypropylene fibers were produced. Along with these...
Pre-harvest water quality of ephemeral streams in Missouri Ozark forests
(University of Missouri--Columbia, 2006)
The Missouri Department of Conservation (MDC) developed a best management practice that leaves a riparian buffer next to streams to reduce the possibility of water quality degradation. The purpose of this study is to quantify water quality in upland...
Neurochemical, epigenetic, and structural brain changes associated with prenatal stress exposure, and the mitigating effects of DHA
(University of Missouri--Columbia, 2023)
[EMBARGOED UNTIL 5/1/2024] The Developmental Origins of Health and Disease (DOHaD) hypothesis posits that in utero stress exposure can modify developmental trajectories, influencing adult health. Research indicates that ...
Adsorption interactions of UV-aged microplastic particles with sulfamethazine
(University of Missouri--Columbia, 2022)
Due to growing plastic demand and production without proper waste management, microplastics have become common around the world throughout diverse systems. At the same time, increased detection of antibiotics in the ...
Event-history mediator models of college attrition: risk goups and risk factors
(University of Missouri--Columbia, 2007)
estimated the effects of a number of factors on college attrition, in 3,290 FGEN and non-FGEN students over four years, using event-history analysis. Results showed that, FGEN students were indeed more likely to leave college than their non-FGEN peers...
Dispositional antecedents of career success : a social network perspective
(University of Missouri--Columbia, 2006)
[ACCESS RESTRICTED TO THE UNIVERSITY OF MISSOURI AT REQUEST OF AUTHOR.] The purpose of this study is to investigate the interrelationships between personality traits (i.e., the five-factor model of personality, core self-evaluations, and proactive...
Investigation into lowering cement clinker content using available materials
(University of Missouri--Kansas City, 2012-08-17)
Reducing cement clinker with mineral addition has been considered an efficient way
of saving energy, lowering CO2 footprint of cement and concrete industries. The trend of
using limestone as mineral addition in cement ...
Essays on behavioral finance
(University of Missouri--Columbia, 2019)
[ACCESS RESTRICTED TO THE UNIVERSITY OF MISSOURI AT REQUEST OF AUTHOR.] This dissertation consists of three essays on behavioral finance. In the first essay, we proposes a new daily market-level investor sentiment index (Photo Pessimism) constructed...
Effects of pressure and temperature on the yield strength of tantalum and rhenium
(2013)
The effects of pressure and temperature on the yield strength of tantalum and
the effects of pressure on the yield strength of rhenium were investigated using ruby
fluorescence. A new Raman system with a motorized stage ...
Assemblage structure and shallow-water habitat use by small-bodied fishes at lower Missouri River sandbars
(University of Missouri--Columbia, 2007)
Populations of many native big-river fishes have declined since channelization and flow regulation contributed to losses of shallow-water habitat (SWH) on lower Missouri River (LMOR). Existing point and wing-dike sandbars represent a potentially...
Associations between psychosis risk and emotional distress disorders with cortical surface morphometry
(University of Missouri--Columbia, 2020)
[ACCESS RESTRICTED TO THE UNIVERSITY OF MISSOURI-COLUMBIA AT REQUEST OF AUTHOR.] Neuroimaging studies have consistently found structural cortical abnormalities in schizophrenia, especially in structural hubs. However, it is unclear what...
The Spoon Toe Site (11MG179): Middle Woodland gardening in the lower Illinois River Valley
(University of Missouri--Columbia, 2005)
This thesis is an examination of archaeobotanical remains from the Spoon Toe site, a Middle Woodland Massey phase site located in the uplands above the Lower Illinois River valley in Morgan County in western Illinois. The ...
Biogeochemistry and inorganic geochemistry as indicators of the paleoenvironment and paleohydrology of the Al-Azraq Basin, Jordan
(2013)
This study investigates the biogeochemical and inorganic geochemical
indicators for past environments and paleohydrology of a high resolution sediment record
from the Al-Azraq Basin, Jordan. The second largest basin in ...
Pluton source varition over two magmatic pulses in the white-inyo range, central-eastern California : implications for paleozoic and mesozoic tectonic reconstructions
(University of Missouri--Columbia, 2018)
[ACCESS RESTRICTED TO THE UNIVERSITY OF MISSOURI AT AUTHOR'S REQUEST.] This dissertation uses compositions of plutons in the White-Inyo Range (WIR) of central-eastern California, which is an important tectonic boundary as it is the easternmost...
Three essays on the demand system
(University of Missouri--Columbia, 2023)
This first essay investigates how scanner data affect demand elasticity estimates and develops methods for scientists to adapt estimated elasticities to analyses of specific policies. We conduct a meta-analysis of U.S. ...