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.
Results
Showing 1 to 20 of 26 for “"inverse modelling"”.
-
Statistical Inverse Modelling of Aerosol Size Distributions
The uncertainty in the radiative forcing caused by aerosols is considered the main factor limiting our understanding of past and future climate changes. Some of this uncertainty is because the processes governing the aerosol dynamics are not fully known, and some uncertainty is because current …
-
Testing and inverse modelling for solder joint reliability assessment
… test methods and equipment, and to use computer modelling techniques in the analysis of lead free solder joints in microelectronics devices, and to develop an inverse Finite Element technique and experimental data to obtain constitutive laws for lead-free solder alloys. In the development of the …
-
Regional CO₂ flux estimates for South Africa through inverse modelling
Bayesian inverse modelling provides a top-down technique of verifying emissions and uptake of carbon dioxide (CO₂) from both natural and anthropogenic sources. It relies on accurate measurements of CO₂ concentrations at appropriately placed sites and "best-guess" initial estimates of the biogenic …
-
Inverse modelling and inverse simulation for system engineering and control applications
… over the past two decades, techniques of inverse simulation have led to a range of successful applications, mainly in the fields of helicopter flight mechanics, aircraft handling qualities and associated issues in terms of model validation. However, the available methods still have some …
-
Inverse modelling of diffuse pollution sources in the River Eden catchment
… in Cumbria as a case study and uses mathematical modelling of measured low resolution field nutrient data together with high-resolution quasi-continuous discharge data to drive a reduced complexity diuse pollution modelling framework (SCIMAP) to identify the areas most likely to be causing water …
-
Analytical camera pose estimation and inverse modelling of high order radial lens distortion polynomials for close range photogrammetry
… recursive reversions methods proposed to compute inverses of radial distortion coefficients in order to correct radial distortions were found not suitable for high-degree radial distortion polynomials and failed to model the inverse profiles of severe barrel, pincushio n, and moustache distortions …
-
Inverse Modelling of Material Parameters for Rubber-like material: Create a New Methodology of Predicting the Material Parameters using Indentation Bending Test
… important research area. In this work, different inverse FE modelling approaches to extract material parameters (Ogden model) has been assessed supported by several newly developed programs in producing or analysing the data. The effects of new material properties (e.g. negative Poisson’s ratio) …
-
Quantitative Analysis of River Profiles and Fluvial Landscapes
… observations. The ability of river profile inverse modelling to address geodynamical problems is assessed. Secondly, I invert > 1500 African river profiles to determine a continent-wide uplift history, calibrated using geological observations. This uplift forcing is then used to drive …
-
Global Analysis of Predicted and Observed Dynamic Topography
… floodplains in the east. Calibrated inverse modelling of drainage networks suggest that the tilt of the peninsula grew principally in Neogene times with vertical motions linked to asthenospheric temperature anomalies. Uplift rates of up to 0.1 mm a$^{-1}$ place important constraints …
-
Dynamic Topography of Madagascar and its Surroundings
… to provide constraints on landscape evolution. Inverse modelling of these observations is used to determine thermal histories, which are a proxy for burial and exhumation. Cooling of between 10--80~$^{\circ}$C during Neogene times suggests that a pulse of uplift of 100--500~m occurred at …
-
Global Relationships Between Intraplate Magmatism and Dynamic Topography
… limited lithospheric processing. Forward and inverse modelling of major and rare earth elements are used to estimate asthenospheric temperatures and lithospheric thicknesses. These geochemical results are compared with tomographic models and a variety of geological and geophysical observations …
-
Magmatic And Tectonic Evolution Of Southern Tibet And The Himalaya
… Thrust (MCT) movement. One-dimensional thermal modelling suggests that the STDS is a reactivated thrust, implying a fundamental change in Himalayan tectonics in the early Miocene.<br></br><br></br>The onset of east-west extension in southern Tibet is constrained by north-south trending …
-
Continental Magmatism and Dynamic Topography
… the depth and temperature of melt generation by inverse modelling. A sensitivity test of this modelling scheme is carried out. Lithospheric thickness and mantle temperature are independently determined from shear wave velocity models. Beneath western North America, a negative correlation between …
-
Basalt Magmatism as a Key to Unlocking Cenozoic Dynamic Topography
… by exploiting thermobarometric and geochemical modelling of basalts. Whole-rock samples are analysed for major, trace and rare earth elements, as well as selected radiogenic isotopes. Geochemical concentrations are corrected to approximate primary melt compositions. A suite of complementary …
-
Understanding the Relationship between Hydraulic Properties of Rocks and Induced Seismicity in the Stimulation of Enhanced Geothermal Systems
… We address those two issues using a novel modelling approach. While a simple physics-based permeability model is explored, most of our efforts are directed to the development of an empirical permeability inversion method. We demonstrate that seismicity density can be used as a proxy for …
-
Epeirogeny of South America and Evolution of Parnaíba Basin, Northeast Brazil
… partial dynamic support. In this context, inverse modelling of longitudinal river profiles is applied to retrieve a continental-scale uplift history. Erosional parameters are calibrated against an independently derived uplift history of the Borborema Province that reveals uplift in the last …
-
Towards high fidelity mapping of global inland water quality using earth observation data
… on multiple aspects of the forward and inverse modelling process, and provides an improvement in our capabilities for routine, global monitoring of inland water quality.
-
Semi-empirical sea-level modelling
… different aspects of semi-empirical sea-level modelling have been studied. Models were first validated using various data sets of global sea level and temperature. SEMs were then used on the glacier contribution to sea level, and to infer past global temperature from sea-level data via inverse …
-
Expressions of Mantle Dynamics in Landscapes and Sedimentary Basins
… from Anatolian drainage networks using an inverse modelling approach. Separately, estimates of asthenospheric temperature were obtained by modelling geochemical compositions of mafic volcanic rocks. Results suggest that elevated topography is supported by anomalously hot asthenosphere and …
Page 1 of 2