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 110 for “"subregions"”.
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Soft Hair and Subregions in Quantum Gravity
In quantum gravity and field theory, large gauge transformations lead to novel degrees of freedom living at the boundary. In the presence of a black hole they are called ‘soft hair’, and it has been suggested that they go some way towards answering the black hole information problem. More …
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Finite element analysis of subregions using a specified boundary stiffness/force method
The accurate finite element analysis of subregions of large structures is difficult to carry out because of uncertainties about how the rest of the structure influences the boundary conditions and loadings of the subregion model. This dissertation describes the theoretical development and computer …
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Differential contributions of subregions of the dorsal anterior cingulate cortex to negative emotion in the common marmoset
… than being one functionally homogeneous region, subregions of the dACC may have distinct functional roles. This evidence is largely correlational, and interventional studies in experimental animals are required to address this. Accordingly, the work in this thesis causally assessed the …
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An investigation of amygdala and hippocampal subregions and their relation to ageing in anxiety and related disorders
Background Obsessive-compulsive disorder (OCD) and social anxiety disorder (SAD) are debilitating disorders that are associated with (inconsistent) evidence of hippocampal and amygdala volumetric abnormalities. In addition, both OCD and SAD are associated with accentuated biological aging, as …
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The genetic relationship between the corpus callosum, bipolar disorder and alcohol use
… architecture of the entire structure, its subregions, and any genetic links with psychiatric disorders remain largely unclear. Therefore, the aim of this study was to investigate the genetic architecture of the CC, and this was accomplished by the following objectives: elucidating the …
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Studies of Benthic Macroinvertebrates in Western Virginia Streams as Related to the Implementation of Rapid Bioassessment Techniques
… distribution with the ecoregions or subregions of western Virginia. I found that it was more accurate to rearrange the subregions into three larger regions called bioregions: the forested hills and mountains (subregion 69a), valleys and plateaus (subregions 66c, 67a, and 67b), and the …
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ADVANCED IMPLEMENTATIONS OF THE ITERATIVE MULTI REGION TECHNIQUE
… is to divide a large problem domain into smaller subregions, solve each subregion separately, and combine the solutions of subregions after introducing the effect of interaction to obtain solutions at multiple frequencies for the large domain. Solution of the subregions using the frequency domain …
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Content representation in the human medial temporal lobe
… it is composed of several anatomically distinct subregions including hippocampus, perirhinal cortex (PRC) and parahippocampal cortex (PHC). However, the computations performed by each subregion to encode individual events is still unclear. The present research tests the central hypothesis that …
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Clustering Response-Stressor Relationships in Ecological Studies
… the whole region of study into disjoint subregions and model the response-stressor relationships within subregions simultaneously. In our examples, these modeling approaches found stronger relationships within subregions and should help the resource managers improve impairment assessment …
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Examining Implicit Price Variation for Lake Water Quality
… states and investigate how observations from subregions can differ. We find that the scaled-up model results are driven by select subregions. The results of this study call into question hedonic models using data for large geographic regions where substantial differences may arise across …
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Suicide in Hong Kong, 1981-1991 : a social and spatial analysis
… spatial study of suicide in Hong Kong's three subregions: Hong Kong Island, Kowloon, and the New Territories for the period 1981-1991. The primary data used are official suicide statistics; these are supplemented by descriptive newspaper accounts of suicide. Over time, the suicide rate for Hong …
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Spatial and Seasonal Variations in Aridification Across Southwest North America
… model projections, for the northern and southern subregions of SWNA between the extended cold and warm seasons. Both subregions become drier (i.e., negative trend in P−E) in the 21st century. The drying trend is biggest in the cold season surface moisture balance, which contributes much of the …
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Network modularity and local environment similarity as descriptors of protein structure
… fragment the protein into highly intra-connected subregions - these subregions are compact and globular, and can be compared with known structural and functional subunits of the protein (also known as domains). By performing this fragmentation process systematically across a large set of proteins, …
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Physiological mechanisms of hippocampal memory processing : experiments and applied adaptive filtering
… the computations within and between hippocampal subregions (CA1, CA3, and dentate gyrus) that mediate these memory processing functions are not completely understood. We investigate by recording in the hippocampal subregions as rats execute an augmented linear track task. From these recordings, …
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Validated global multiobjective optimization of trajectories in nonlinear dynamical systems
… of the (finite-dimensional) state space into subregions, we construct a finite transition graph between these subregions, such that each trajectory of interest maps to a finite path (transition sequence) in the graph, where each transition trajectory lies in a local state space neighborhood of …
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Characterization of genetically distinct neuronal subtypes in the lateral habenula using Cre mouse lines
… neuronal subtypes that are localized into four subregions. These have been designated as the HbX, lateral, oval/medial, and marginal subregions of the LHb. Each subregion is marked by non-overlapping genes. Cre mouse lines can be used as a tool to target these genes and thus manipulate these …
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Primate Ventromedial Prefrontal Cortex and the Physiological and Behavioural Dysfunction Characteristic of Mood and Anxiety Disorders
… both its anatomy and implicated function: vmPFC subregions have roles in positive affect, negative affect and autonomic/endocrine regulation. Whether different subregions serve fundamentally different functions, or whether they perform similar computations on different inputs, remains unclear. …
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The contributions of posterior lateral temporal cortex to language and control networks
… made claims about the function of the pLTC or subregions within, suggesting involvement in domains such as phonology, semantics, social processing, and both semantic and domain-general control. However, it remains unclear how this area is organised, including which subregions might be recruited …
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Replication and Silencing at the Hmr-E Compound Origin in Saccharomyces Cerevisiae
… of not one, but a minimum of three independent subregions capable of ARS (autonomously replicating sequence) and chromosomal origin activity. Each subregion was also tested for silencing ability, and one was subsequently classified as the 138bp minimal silencer-origin to reflect its unique …
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Medial Temporal Lobe Structure and Function
… and the parahippocampal gyrus: PHG) and its subregions: entorhinal cortex, perirhinal cortex, and parahippocampal cortex: ERC, PRC and PHC. respectively). The subdivision of the PHG into its subregions was novel, and required the development of new methods for cortical assessment and …
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