Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 18 of 18 for “"Linear mixed effect model"”.
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The Effects of Internalized Homonegativity, Outness, and Depression on Sexual Risk Prevention Behaviors of Minority Men Who Have Sex With Men
… study sought to provide an understanding of the effect of outness, homonegativity, and depression on the odds of engaging in treatment as prevention (TaSP) overtime using generalized linear mixed effect models. In addition, the linear mixed effect model was employed to determine if there were …
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EVALUATING EMBRYO SURVIVAL OF SURROGATE FISH SPECIES USING MULTIPLE INCUBATORS: CONTINUING EFFORTS TOWARDS REINTRODUCING ARCTIC GRAYLING (THYMALLUS ARCTICUS) INTO LOWER MICHIGAN STREAMS
… performed similarly to RSIs in most experiments. Linear mixed effect model results suggested that survival of surrogate species was best explained by incubator type and stream location. The proportion of variation explained by the incubator type was low, relative to the random effect of stream …
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Behavioral analysis of piglets exposed to a second immune challenge following maternal immune activation
The combined effects of maternal immune activation (MIA) and a second immune challenge later in life on pig behavior have not been studied. Deciphering these effects is particularly relevant in diseases that can have pronounced effects during gestation, such as porcine reproductive and respiratory …
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The Spillover Effect of Proximity to LEED-Energy Star Certified Office Buildings On Neighborhood Market Value
… This research examined the spillover effect of LEED and/or Energy Star certified office buildings on the property values of other buildings in their neighborhood in Manhattan, New York City from an economic standpoint. The spatial analysis approach using the Geographic Information …
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Phenology of a Relict Population Of The Pitcher Plant Mosquito, Wyeomyia Smithii (Diptera: Culicidae), in Tattnall Co., Ga
… contained in pitchers had a strong positive effect on larval abundance within the pitcher (r<sup>2 </sup>= 0.624). The density of larvae had strong seasonal patterns and has an overall positive trend over time. Temperature was shown to effect the abundance of larvae (P = 0.093). Blood feeding …
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Ground vegetation gross primary production dynamics of a drained peatland forest ecosystem
… mg CO2 m-2 h-1), thereby indicating a delaying effect of partial harvest induced changes on productivity. A linear mixed effect model with fixed effects of treatment (control and partial harvest) and random effects of chambers further supported this result with a significant effect of partial …
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Screening experiments using supersaturated designs with application to industry
… The Gauss-Dantzig selector was identified as an effective analysis method, whilst little difference was found in the practical performance of designs from the different criteria. As a result of the study, several guidelines are provided, to indicate when supersaturated designs are most likely to …
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Nonparametric testing for random effects in mixed effects models based on the piecewise linear interpolate of the log characteristic function
Traditional linear mixed effect models assume the distributions of the random effects and errors follow normal distribution with mean zero and homoscedastic variance sigma square. This thesis presents a new nonparametric testing approach for normality for the random effects distribution based on …
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Significance of the smash-lunge sequence and lunges in relation to badminton singles match performance
… important in badminton and winners were more effective at winning points immediately off the smash-lunge sequence. Study 2: Sixteen state-level male badminton players in Western Australia (14-35 years) performed three badminton lunging tests; single step lunge (SSL), single step lunge back to …
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JOINT MODELING OF MULTIVARIATE LONGITUDINAL DATA AND COMPETING RISKS DATA
… due to informative dropout, one has to jointly model the longitudinal data and the timeto event outcomes in order to obtain valid inferences. Recently, there has been much attention paid to the joint analysis of single longitudinal measurements and single time to event data. A natural extension …
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Biomechanics of Cranial Decompression Procedures in Traumatic Brain Injury
… engineering methods such as finite element (FE) modelling may be used to inform neurosurgeons of the effects of this type of surgery so they can optimise on both a patient-specific and more general basis. This thesis develops finite element models of decompressive craniectomy using patient CT …
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Evaluation of a Participant Co-designed Lifestyle Change Program for Youth
… Method: The aim of this study was to assess the effects of implementing the PowerHouse program on both clinical and quality of life outcomes in high-risk, low-income youth and their caregivers. Primary outcomes were BMI standard deviation and BMI percentile in youths. Secondary outcomes included …
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Tree species effects on the release of dissolved organic carbon and nitrogen from decomposing logs
… this study was the investigation of tree species effects, forest management type and site conditions on the release and quality of dissolved organic C and N from CWD. Within the Biodiversity Exploratories, a long-term and large scale biodiversity project funded by the DFG, logs of 13 different …
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The role of ventromedial and dorsolateral prefrontal cortex in physiological and behavioural dysfunction in non-human primates, of relevance to mood and anxiety disorders
… of this thesis. Chapter three focuses on the effect of overactivation and inactivation of area 25 in two behavioural tests assessing motivational and consummatory behaviour of relevance to the symptom of anhedonia, the loss of pleasure. In chapter four the effect of the local increase of …
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Modelling of risk factors, case-fatalities, survival and functional health status for stroke in Kelantan, Malaysia
… in the low- and middle-income countries. The effect of stroke on daily activities is also understudied. Measuring the effect of stroke on daily activities is important to evaluate the recovery process. Understanding the factors affecting daily activities post-stroke helps identify areas where …
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Plant communities in field margins of agricultural landscapes: species distributions, functional traits, and contributions to landscape function
… natural habitats. Within such landscapes, linear semi-natural habitats often define the edges of agricultural fields, called “field margins”. Field margins are an important component of the agricultural landscapes as they are contributing positively to ecosystem functions by supporting …
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Current status and impact (2004-2015) of indigenous ungulate herbivory on the vegetation of Sanbona Wildlife Reserve in the Little Karoo
… (2004-2015). It also determines the relative effect of grazing and rainfall on the observed patterns. Finally, the implications of these findings for management are discussed. Data from drop-point surveys in fenced (exclosure) and unfenced (grazed) plots in the dominant vegetation types as …
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The effect of long-term azithromycin treatment on the respiratory microbiota of HIV-infected children with chronic lung disease
… of CLD+ CLWH. Thirdly, the study assessed the effect of azithromycin on the sputum bacteriome of participants. Finally, the persistence of the bacteriological impact of azithromycin, six months post-intervention, was also investigated. Methods: This study was nested within the Bronchopulmonary …