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 138 for “"DSA"”.
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Using Decoys as a Resiliency Mechanism in Spectrally Harsh DSA Environments
… mediums develop and Dynamic Spectrum Access (DSA) is implemented as a means to increase capacity on a limited spectrum, the threat of reactive interference becomes real. The motivation for this thesis is to address this problem by suggesting a mechanism which could be used in these spectrally …
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Inclusion of Priority Access in a Privacy-preserving ESC-based DSA System
According to the Federal Communications Commission's rules and recommendations set forth for the 3.5 GHz Citizens Broadband Radio Service, a three-tiered structure shall govern the newly established shared wireless band. The three tiers are comprised of three different levels of spectrum access; …
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Vergleich der Identifikation hepatischer, perihepatischer sowie abdomineller Gefäße: Computertomogaphie versus Digitale Subtraktionsangiographie (DSA)
… biphasisch kontrastverstärkten Spiral-CT und der DSA unterschiedlich. Die Qualität der Gefäßdarstellung war bei den Arterien in der Angiographie besser als in der Computertomogaphie und dies um so mehr, je kleiner die Gefäße waren. Bei den Venen war die Identifikation der Gefäße in der CT …
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Characteristics of Donor-Specific anti-HLA Antibodies (DSA) Impacting different Renal Allograft Outcomes
… methods have been developed to detect harmful DSAs. However, not all DSAs have the same detrimental effect, as different antibody characteristics (timing, specificity, strength, and complement-fixing ability) might trigger distinct immune responses. Here, we assessed DSA characteristics in …
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Analýza postranních kanálů algoritmu ML-DSA s využitím technik inspirovaných útoky Marvin a Minerva
… Module-Lattice Digital Signature Algorithm (ML-DSA). Cílem je prozkoumat, zda numerické vlastnosti mezilehlých hodnot používaných během podepisování vykazují měřitelné časové závislosti. Metodologie je inspirována časovými útoky Marvin a Minerva. Pro tento účel byl implementován samostatný …
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Intermediäre und öffentliche Meinungsbildung – Eine kritische Würdigung des deutschen und europäischen Regulierungskonzepts von NetzDG bis DSA
Die Arbeit untersucht die Wechselwirkungen und Friktionen zwischen verschiedenen Regelwerken auf deutscher und europäischer Ebene, welche die Regulierung der Medien- und Informationsintermediäre im Interesse der öffentlichen Meinungsbildung bezwecken.
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Small signal analysis of power systems: Eigenvalue tracking method and eigenvalue estimation contingency screening for DSA
… screening method for dynamic security analysis (DSA). The new screening method extends the use of distribution factors commonly used in static security analysis (SSA) to DSA by using the factors with eigenvalue sensitivities to estimate the change in the eigenvalues due to a line outage. This …
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A computational implementation of design sensitivity analysis and structural optimisation
… optimisation. Design Sensitivity Analysis (DSA) crucially underpins much of structural optimisation and, as such, is focussed on more intently than the optimisation theory itself: various approaches to the Direct Differentiation Method (DDM) DSA procedure are investigated and computationally …
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Experimental and numerical investigation of steady-state and transient ultrasound directed self-assembly of spherical particles in a viscous medium
Ultrasound directed self-assembly (DSA) utilizes the acoustic radiation force associated with a standing ultrasound wave field to organize particles dispersed in a fluid medium into specific patterns. The ability to tailor the organization and packing density of spherical particles using ultrasound …
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Spectrum Management in Dynamic Spectrum Access: A Deep Reinforcement Learning Approach
Dynamic spectrum access (DSA) is a promising technology to mitigate spectrum shortage and improve spectrum utilization. However, DSA users have to face two fundamental issues, interference coordination between DSA users and protections to primary users (PUs). These two issues are very challenging, …
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Renal allograft biopsies at Groote Schuur Hospital: a histopathologic descriptive study with molecular insights
… and biomarkers (C4d/donor specific antibodies (DSA)). In resource-limited settings, DSA testing can be challenging, necessitating reliable alternatives. Aim: This study evaluated: (1) rejection patterns at our hospital; (2) the impact of the Banff 2022 criteria with a computer-assisted tool; and …
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Design automation algorithms for advanced lithography
… lithography (EBL) and directed self-assembly (DSA). While these new technologies create enormous opportunities, they also pose great design challenges due to their unique process characteristics and stringent constraints. In order to smoothly adopt these advanced lithography technologies in …
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Diagnostik der Becken-Bein-Gefässe mittels kontrastmittelangehobener 3D-MR-Angiographie
… the calves were compared with the gold standard DSA. All examinations were reviewed by four experienced radiologists and one cardiovascular surgeon. Degree of stenosis, image quality and correlation of both methods were evaluated. Therapeutical decisions by the cardiovascular surgeon based on …
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Feasibility of using Lodox to perform digital subtraction angiography
… or blockages. Digital subtraction angiography (DSA) is a tool used to improve the clarity of the vessels being imaged for better and easier decision making in diagnostics and planning. Lodox, a low dose x-ray system developed by Debex (Pty) Ltd, a subsidiary of de Beers, was designed …
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Software Radio-Based Decentralized Dynamic Spectrum Access Networks: A Prototype Design and Enabling Technologies
Dynamic spectrum access (DSA) wireless networks focus on using RF spectrum more efficiently and dynamically. Significant progress has been made during the past few years. For example, many measurements of current spectrum utilization are available. Theoretical analyses and computational simulations …
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Directed self-assembly of block copolymers with functional materials : a study of nanocomposite thin film fabrication on graphoepitaxial templates
… self-assembly patterns. Directed self-assembly (DSA) of BCPs has therefore emerged as one of the most promising technologies to fabricate functional nanostructures and is able to produce patterns with ultra-small resolution (sub-10 nm) while maintaining high throughput and order. However, …
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