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 154 for “"Network connectivity"”.
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Optimization problems in network connectivity
… algorithmic theory for more than five decades, network optimization has assumed increased significance in recent times with the advent and widespread use of a variety of large-scale real-life networks. The primary goal of such networks is to connect vertices (representing a variety of real-life …
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Visualisation of ATM network connectivity and topology
… allow for rapid changes in a virtual path network depending on traffic load and future demands. This technology improves the utilisation, lowers the call blocking probability and increases the overall performance of a network. However, it poses several management difficulties when user …
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Repairing wireless sensor network connectivity in damaged environments
A wireless sensor network can become partitioned due to node failure, requiring the deployment of additional relay nodes in order to restore network connectivity. This introduces an optimisation problem involving a tradeoff between the number of additional nodes that are required and the costs of …
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Street network connectivity and local travel behaviour: assessing the relationship of travel outcomes to disparate pedestrian and vehicular street network connectivity
… research investigated the association of street network connectivity differences across travel modes with travel behaviour – mode choice, distance traveled and number of trips. To date research on travel behaviour relationships with urban form has not developed empirical evidence on street …
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FRAMEWORK FOR INCORPORATING NETWORK CONNECTIVITY IN TRANSPORTATION SYSTEMS EVALUATION
… of proposed projects in terms of the increased connectivity of the parent network. Thus, agencies may be inadvertently omitting a key and critical goal of transportation investment evaluation and decision making, particularly in regions and countries with sparse networks. This dissertation …
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MDP-based Vehicular Network Connectivity Model for VCC Management
… Vehicular Cloud management scheme that relies on connectivity. This work models uncertainty and considers every possible chance a vehicle may be available through accessible communication means, such as vehicle-to-everything (V2X) communications and the vehicle being in the range of road-side …
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Brain Network Connectivity in Anaesthesia and Disorders of Consciousness
… and by examining how brain function and connectivity is altered in various clinical settings. The focus of this thesis is to use two of these clinical settings, pharmacologically-induced sedation and disorders of consciousness (DOC), as experimental models for measuring changes in …
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Headwater stream network connectivity: biogeochemical consequences and carbon fate
… corridors constitute the majority of river network length and regulate cycling of carbon and oxygen as they expand and contract their connections across the landscape. Though headwater streams integrate many biogeochemical signals from the watersheds they drain and provide important …
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Network connectivity tracking for a team of unmanned aerial vehicles
Algebraic connectivity is the second-smallest eigenvalue of the Laplacian matrix and can be used as a metric for the robustness and efficiency of a network. This connectivity concept applies to teams of multiple unmanned aerial vehicles (UAVs) performing cooperative tasks, such as arriving at a …
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DTI, structural network connectivity, and neurocognitive changes associated with subconcussive impacts in youth football players
American football has the highest rates of mild traumatic brain injury (mTBI) among youth athletes (age 8-13 years) in the United States. It is well established that concussions can lead to disruption of white matter (WM) microstructural integrity and lead to neurocognitive impairment. Little is …
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FUNCTIONAL NETWORK CONNECTIVITY IN HUMAN BRAIN AND ITS APPLICATIONS IN AUTOMATIC DIAGNOSIS OF BRAIN DISORDERS
… integration is by measuring functional connectivity (FC) among specialized regions in the brain. Recently, there is growing interest in studying the FC among brain functional networks. This type of connectivity, which can be considered as a higher level of FC, is termed functional …
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On the Use of Independent Component Analysis & Functional Network Connectivity Analysis: Evaluation on Two Distinct Large-Scale Psychopathology Studies
… to gaining a better understanding of functional connectivity within the brain, especially within populations suffering from mental disorders. Functional magnetic resonance imaging (fMRI) is one of the leading techniques currently being implemented to explore cognitive function and aberrant brain …
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Age and Family History of Alzheimer's Disease and Related Dementias as Predictors of Locus Coeruleus and Salience Network Connectivity
… in the brain. The LC interacts with the salience network (SN), specifically the dorsal anterior cingulate cortex (dACC) and the insula, to coordinate and direct attention. The LC is a site of early Alzheimer's pathology and also experiences normal age-related declines in functioning. In this …
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Determining optimal flight paths for cellular network connectivity for the transmission of real-time physiological data in support of big data analytics during airborne critical care transport
This thesis presents a methodology for determining the optimal flight paths between two geographical points based on distance and cellular reception over the path. This methodology consists of two main concepts: coverage map generation, and path planning. Coverage map generation creates a grid map …
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Leveraging biological pathways and gene networks to understand the genetic architecture of diseases and complex traits
… the role of biological pathways and gene networks in disease biology. In this thesis, we formally assess (1) the contribution of disease-associated gene pathways to disease heritability, (2) the contribution of genes with high network connectivity in known gene networks to disease …
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On the Structure and Dynamics of Aluminophosphate Glass-forming Melts measured by Dynamic Light Scattering
… range of compositions designed to manipulate the network connectivity of the glass-forming liquid in order to investigate how the change in the chemical structure of covalent network affects its dynamics. The dynamic structure factor was measured to provide quantitative information about the …
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Prioritized Sensor Detection with Communication Constraints: A Cyber-Physical Systems Approach
… heterogeneous team of agents to solve the sensor network connectivity problem. An approach that makes use of a heterogeneous team of agents has several advantages when cost, integration of capabilities, or possible large search areas need to be investigated. A heterogeneous team allows for the …
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Traffic-Aware Channel Assignment for Multi-Transceiver Wireless Networks
… in multi-hop, multi-transceiver wireless networks. We investigate (1) how channels can be assigned throughout the network to ensure that the network is connected and (2) how the channel assignment can be adapted to suit the current traffic demands. We analyze a traffic-aware method for …
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Enhancing network robustness via shielding
Shielding critical links enhances network robustness and provides a new way of designing robust networks. We first consider shielding critical links to guarantee network connectivity after any failure under geographical and general failure models. We develop a mixed integer linear program (MILP) to …
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Network effect and investor’s perceptions: An empirical investigation
… In the first study of this thesis, a network structure is constructed and built social ties circle based on the frequency of communication of investors within the network, and the network size of the investors to develop a comprehensive measurement scale for the social network index. …
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