Search for dissertations about: "tomography optimal"
Showing result 1 - 5 of 75 swedish dissertations containing the words tomography optimal.
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1. Seismic tomography : Algorithms and applications
Abstract : A preferred algorithm for seismic tomography needs to have capabilities including computational efficiency, minimal computer memory requirements, easy regularization and nonuniqueness analysis. In this thesis, regularised recursive least squares for seismic tomography is developed. READ MORE
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2. Multidimensional inverse problems in imaging and identification using low-complexity models, optimal mass transport, and machine learning
Abstract : This thesis, which mainly consists of six appended papers, primarily considers a number of inverse problems in imaging and system identification.In particular, the first two papers generalize results for the rational covariance extension problem from one to higher dimensions. READ MORE
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3. Pontryagin approximations for optimal design
Abstract : This thesis concerns the approximation of optimally controlled partial differential equations for applications in optimal design and reconstruction. Such optimal control problems are often ill-posed and need to be regularized to obtain good approximations. READ MORE
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4. Low-dose computed tomography of the abdomen and lumbar spine
Abstract : Radiography is a common radiologic investigation despite abundant evidence of its limited diagnostic value. On the other hand, computed tomography (CT) has a high diagnostic value and is widely considered to be among the most important advances in medicine. READ MORE
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5. High-Resolution Seismics Methods Applied to Till Covered Hard Rock Environments
Abstract : Reflection seismic and seismic tomography methods can be used to image the upper kilometer of hard bedrock and the loose unconsolidated sediments covering it. Developments of these two methods and their application, as well as identifying issues concerning their usage, are the main focus of the thesis. READ MORE