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 17 of 17 for “"Directed network"”.
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Distributed load balancing over directed network topologies
… and the increasing availability of high speed networks, it has become possible to interconnect various geographically distributed computational elements (nodes) so that they can work cooperatively and obtain a performance not attainable by individual nodes. In the literature, distributing the …
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Hydrologic Modeling of Irregular Tile Drainage Systems
… address the influence of irregular tile networks on Midwestern watershed hydrology. Several issues were identified as pertinent to this specific task: solving the problem of flow to a single tile drain, addressing irregular tile networks at the watershed scale and integrating the dominant …
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Approximation algorithms for the minimum congestion routing problem via k-route flows
Given a directed network G = (V,E) with source and target nodes s and t, respectively, and an integral capacity c_e on each edge e in E, an elementary k-flow is defined as a flow of 1 unit along each of k edge-disjoint s-t paths. A k-route flow, first introduced as a concept by Kishimoto, is …
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System development technical interactions and innovation : a network-based investigation
… information flows can be represented as a directed network. This thesis develops a context and a research design that can help one investigate the impact of the resultant network structure on innovation in complex engineering systems. The broad context can be divided into two: theoretical …
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Setting location priors using beamforming improves model comparison in MEG-DCM
Modelling neuronal interactions using a directed network can be used to provide insight into the activity of the brain during experimental tasks. Magnetoencephalography (MEG) allows for the observation of the fast neuronal dynamics necessary to characterize the activity of sources and their …
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Causal Gene Network Inference from Genetical Genomics Experiments via Structural Equation Modeling
… of this research is to construct causal gene networks for genetical genomics experiments using expression Quantitative Trait Loci (eQTL) mapping and Structural Equation Modeling (SEM). Unlike Bayesian Networks, this approach is able to construct cyclic networks, while cyclic relationships are …
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Engineering immunity : enhancing T Cell vaccines and combination immunotherapies for the treatment of cancer
… outcome is likely due in part to the complex network of immunosuppressive pathways present in advanced tumors, which necessitates the development of novel therapeutics and combination immunotherapies to generate a counter-directed network of pro-immunity signals⁴-⁸. In Chapters 2 and 3 of this …
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Uncertainties in climate data analysis
… dry event at 6900 BP. We also analyze the network of dependencies surrounding GMT. We find an intricate, directed network with multiple links between the different factors at multiple time delays. We further uncover a significant feedback from the GMT to the El Niño Southern Oscillation at …
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Achieving business and IT alignment in digital service redesign: a study of UK e-government
… localism) with the core factor: communication. Network theories are used in this research to propose actions. It therefore proposes the adoption of a goal-directed network aimed at alignment in service redesign. This research links alignment, e-government, service redesign and networks together, …
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New methods for fixed-margin binary matrix sampling, Fréchet covariance, and MANOVA tests for random objects in multiple metric spaces
Many approaches to the analysis of network data essentially view the data as Euclidean and apply standard multivariate techniques. In this dissertation, we refrain from this approach, exploring two alternate approaches to the analysis of networks and other structured data. The first approach seeks …
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Enabling, Managing, and Leveraging Organizational Learning for Innovation - A Case Study of the USAID Feed the Future Innovation Lab for Collaborative Research Program Network
… have embraced multi-organizational, cross-sector network collaboration as part of their core missions. The strategic transition of USAID to an increased use of network models for program implementation raises questions concerning the ability of the agency, through its partners, to foster …
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Computational development of regulatory gene set networks for systems biology applications
In systems biology study, biological networks were used to gain insights into biological systems. While the traditional approach to studying biological networks is based on the identification of interactions among genes or the identification of a gene set ranking according to differentially …
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Essays in Industrial Organization and Political Economy
… of trade sanctions (import and export) using a directed network model. Sanctions are common punitive measures taken by a sender player to discipline a target player. Empirical evidences in the realm of international trade show differences in the effectiveness between import and export sanctions. …
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Essays in Econometrics
… regressors. Chapter 1 considers estimation of a directed network model in which outcomes are driven by dyad-specific variables (such as measures of homophily) as well as unobserved agent-specific parameters that capture degree heterogeneity. I develop a jackknife bias correction to deal with the …
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Fault-tolerant consensus in directed graphs and convex hull consensus
… on fault-tolerant consensus in message-passing networks: • We explore various fault-tolerant consensus problems under different fault models in communication networks that are modeled as arbitrary directed graphs, i.e., two pairs of nodes may not share a bi- directional communication channel, …
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ESSAYS ON FINANCIAL MARKETS, NETWORKS, AND TECHNOLOGIES
… issues at the heart of this transformation: the network of the growing crowd of retail investors in the U.S. equity market; the market impact of perpetual contracts (perps), a financial innovation that has seen phenomenal trading volume in the cryptocurrency space; and the transactions between …
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Modeling and Optimization of Wireless Routing
Recently, many new types of wireless networks have emerged, such as mobile ad hoc networks (MANETs), cognitive radio networks (CRNs) and large scale wireless sensor networks. To get better performance in these wireless networks, various schemes, e.g., metrics, policies, algorithms, protocols, etc., …