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 20 of 25 for “"longitudinal profiles"”.
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Joint models for nonlinear longitudinal profiles in the presence of informative censoring
… with a long tail to the right. The observed longitudinal gametocyte profile also has a nonlinear relationship with time. In addition, since most malaria intervention studies are not designed to optimally measure the evolution of the longitudinal gametocyte profile, there are very few …
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Systematic oversteepening in longitudinal profiles of mixed bedrock-alluvial channels at tributary junctions : Appalachians, Virginia
… the pattern were tested in two ways: (1) digital profiles were compared to pre-existing data sets for grain-size, channel width, lithology, and drainage area; (2) a short field venture was conducted to test the accuracy of the DEMs and to provide additional data sets such as grain-size and channel …
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The Longitudinal Profiles of Child and Parent Religiousness and Spirituality: Their Relations With Child Adjustment
… person centered approach. The current study used longitudinal data collected 2 years apart (N = 357 Time 1, N = 220 Time 2) in the examination of child and parent R/S. Four questions were raised in the project. First, are there identifiable subgroups of individuals characterized by unique …
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Evaluating Geomorphic Change in Little Creek Using Repeated Cross-Sectional and Longitudinal Profile Surveys
… Channel change was evaluated by measuring ground profiles using traditional survey methods. Cross section and longitudinal profiles are surveyed annually every summer in the six study reaches. Change is assessed through evaluation of cross sections and longitudinal profiles, analysis of bed …
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Exploring Hyperspectral and Very High Spatial Resolution Imagery in Vegetation Characterization
… 2) exploration and adoption of tree crown longitudinal profiles to achieve high accuracy in tree species classification; and 3) evaluation of canopy health state for Emerald Ash Borer (EAB) infestation assessment by intelligent combination of multi-sourced data.
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Aplicabilidade dos métodos de determinação de perfis da superfície livre em escoamentos através de condutos circulares
… Following, some methods for determination of longitudinal profiles of the water surface to gradually varied flow are described. These methods are the Direct Step, Keifer and Chu, Keifer and Chu modified, Angles, Critical Slope, Graphical Integration and the Ven Te Chow one. That description is …
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Heterogeneity modeling and longitudinal clustering
… in various personalization applications for longitudinal data. In the first application, we propose a personalized drug dosage recommendation scheme. Specifically, we model patients' heterogeneity using subject-specific random effects, and propose an adaptive procedure to estimate new …
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Caracterização morfológica e morfotectônica do gráben do Rio Mamanguape e adjacências, borda oriental do estado da paraíba.
… - Extension Relation (SER), latitudinal and longitudinal profiles, Asymmetry Factor Watershed (AFW), Hypsometric and Slope Chart (HSC). Thus, the correlations of the data will provide a good understanding of the morphotectonics conditions in which the focused area is inserted. The results of …
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Latent Variable Models for Longitudinal Outcomes from a Parenting Intervention Study
… use of structural equation modelling (SEM) for longitudinal profiles and latent growth mediation modelling. Improved behaviour was observed in terms of reported child behaviour problems and reported harsh parenting with differences between the intervention and control groups directly after the …
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Evaluation of the performance of polyurethane foams in rigid pavement preservation
… lift and level settled concrete pavement slabs. Longitudinal profiles data were collected using a standard high-speed inertial profiler before and after application of the material to assess the performance of the treated sections over time. These data were evaluated by using the profile viewing …
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Constructing growth reference curves for a cohort of South African children
… as various curve smoothing approaches for the longitudinal profiles, including cubic splines, fractional polynomials and Berkey-Reed First and Second Order models. The preferred approach was to use the Box-Cox Power Exponential (BCPE) distribution with curve smoothing by cubic splines. …
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Outcomes of infants starting Antiretroviral therapy in Southern Africa
… program baseline characteristics is provided and longitudinal profiles of response variables are described. The Kaplan-Meier method was used to assess time to outcomes of mortality and virological outcome. Cox Proportional Hazards models identified those baseline characteristics associated with …
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The impact of run-of-river dams on channel morphology and sedimentation
… four runof- river dams examined in this study. Longitudinal profiles and trends in channel depth indicate that no pronounced wedge of sediment has accumulated upstream of these structures. Some trapping of fines is evident, but this effect is not substantial enough to produce a distinct …
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Flux tube profiles at high temperature
… deconfined phase of QCD, we were able to see how longitudinal and transverse profiles of the flux tube between the static quark and anti-quark pair change with temperature. Flux tube profiles are extracted from correlations of a plaquette with Polyakov loops by varying the distance and the …
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A regional study of landslide hazards and related features in the Upper Indus River Basin, northern Pakistan
… The comparison revealed that the channel's longitudinal profiles were a useful discriminator of past channel blockages, most of which appear to have been caused by pre-historic landslides and rockslide avalanches along the Indus River and its principal tributaries. These analyses also helped …
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Hydrogeology and geomorphology of two structurally dissimilar terranes in Pennsylvania
… as being caused by structural control.</p><p>Longitudinal profiles of the streams are related to basin lithology, structure, and depositional features of tributary streams. The shape of channel materials is related to the sedimentary structure of parent materials, and channel cross sections …
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Constraining the pathways and fluxes of subglacial meltwater beneath the palaeo-Antarctic Ice Sheet
… as they are deep. The dimensions and undulating longitudinal profiles of the channels suggest that they are produced by pressurised subglacial meltwater over multiple glacial cycles, potentially in combination with some secondary degree of direct glacial erosion. The channels are comparable, but …
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The evolution of the Congo- Kalahari Watershed: African mega-geomorphology
… Watershed. The analysis of their longitudinal profiles, through the use of a geographic information system and remotely sensed imagery and elevation data, provides insights into this drainage divide. The creation of a geodatabase on river knickpoints, featuring geographic and …
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Theory of the growth and shape of Laplacian stream networks
… Laplacian growth. Second, I consider the longitudinal profiles of a river network whose river slopes are sufficiently large to carry sediment downstream. This restriction on the profile of a river has implications on the development of new side branches. I find that side branches cannot …
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Investigating the Mechanisms and Kinetics of Circulating Tumour DNA Release to Improve its Clinical Utility
… influencing release. I next investigated the longitudinal kinetics of ctDNA release in 70 HNSCC patients treated with definitive radiotherapy or chemoradiotherapy. Three patterns of ctDNA kinetics were observed, with HNSCC patients exhibiting frequent on-treatment spikes, with a strong …
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