Browsing Department of Informatics by Document Types "Doctoral thesis"
Now showing items 81-100 of 108
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Risks in Networked Computer Systems
(Doctoral thesis, 2008-09-24)Networked computer systems yield great value to businesses and governments, but also create risks. The eight papers in this thesis highlight vulnerabilities in computer systems that lead to security and privacy risks. A ... -
Scalable Learning of Bayesian Networks Using Feedback Arc Set-Based Heuristics
(Doctoral thesis, 2023-11-10)Bayesianske nettverk er en viktig klasse av probabilistiske grafiske modeller. De består av en struktur (en rettet asyklisk graf) som beskriver betingede uavhengighet mellom stokastiske variabler og deres parametere (lokale ... -
Scaling Up Medical Visualization : Multi-Modal, Multi-Patient, and Multi-Audience Approaches for Medical Data Exploration, Analysis and Communication
(Doctoral thesis, 2022-09-02)Medisinsk visualisering er en av de mest applikasjonsrettede områdene av visualiseringsforsking. Tett samarbeid med medisinske eksperter er nødvendig for å tolke medisinsk bildedata og lage betydningsfulle visualiseringsteknikker ... -
Security analysis of electronic voting and online banking systems
(Doctoral thesis, 2007-08-29)The main focus of this dissertation is on security analysis of electronic voting and online banking systems. Six papers form the basis of the thesis and include the following topics: a model for analysis of voting systems, ... -
Security Analysis Of Lightweight Schemes for RFID Systems
(Doctoral thesis, 2012-08-08)This thesis mainly examines the security analysis of lightweight protocols proposed for providing security and privacy for RFID systems. To achieve this goal, first we give a brief introduction of RFID systems. The ... -
Selected Topics in Cryptanalysis of Symmetric Ciphers
(Doctoral thesis, 2021-10-27)It is well established that a symmetric cipher may be described as a system of Boolean polynomials, and that the security of the cipher cannot be better than the difficulty of solving said system. Compressed Right-Hand ... -
Selected x86 Low-level Attacks and Mitigations
(Doctoral thesis, 2017)Low-level exploitation is an ongoing security issue. History has shown multiple methods to gain control over, and control, the flow of execution, as well as multiple methods and approaches to mitigate the same issue. This ... -
Sequences and Linear Codes from Highly Nonlinear Functions
(Doctoral thesis, 2014-06-16)Due to optimal nonlinearity and differential uniformity, perfect nonlinear (PN) and almost perfect nonlinear (APN) functions are of great importance in cryptography. It is interesting that they also define optimal objects ... -
Sketch-based Modelling and Conceptual Visualization of Geomorphological Processes for Interactive Scientific Communication
(Doctoral thesis, 2014-09-19)Throughout this dissertation, solutions for rapid digitalization of ideas will be defined. More precisely, the focus is on interactive scientific sketching and communication of geology, where the result is a digital ... -
Sketch-based Storytelling for Cognitive Problem Solving: Externalization, Evaluation, and Communication in Geology
(Doctoral thesis, 2013-06-25)PROBLEM solving is an important part of all engineering and scientific activities. It is present, for instance, when experts want to develop more fuel-efficient cars or when they are searching for oil and gas in the ... -
Statistical considerations for the design and interpretation of proteomics experiments
(Doctoral thesis, 2021-06-10)The methods to study proteins are continuously improving, making it possible to identify and study increasingly more proteins. It is important to keep studying and improving the way experiments are designed, performed, and ... -
Straggler-Resilient Distributed Computing
(Doctoral thesis, 2022-09-09)Utbredelsen av distribuerte datasystemer har økt betydelig de siste årene. Dette skyldes først og fremst at behovet for beregningskraft øker raskere enn hastigheten til en enkelt datamaskin, slik at vi må bruke flere ... -
Studies on the Security of Selected Advanced Asymmetric Cryptographic Primitives
(Doctoral thesis, 2022-03-11)The main goal of asymmetric cryptography is to provide confidential communication, which allows two parties to communicate securely even in the presence of adversaries. Ever since its invention in the seventies, asymmetric ... -
Sufficiently overdetermined random polynomial systems behave like semiregular ones
(Doctoral thesis, 2019-12-18)Solving systems of polynomial equations over finite fields is a fundamental problem in several areas of pure and applied mathematics. Gröbner basis methods is a family of techniques to computationally solve such systems ... -
Techniques in parameterized algorithm design
(Doctoral thesis, 2006-03-06)In this thesis we give a novel classification of techniques for designing parameterized algorithms, together with research publications applying these techniques, in particular Crown Decompositions, to various problems. ... -
Throughput and robustness of bioinformatics pipelines for genome-scale data analysis
(Doctoral thesis, 2014-02-19)The post-genomic era has been heavily influenced by the rapid development of highthroughput molecular-screening technologies, which has enabled genome-wide analysis approaches on an unprecedented scale. The constantly ... -
Topological Quantum and Skein-Theoretic Aspects of Braided Fusion Categories
(Doctoral thesis, 2021-08-27)The first part of this thesis is dedicated to the study of anyons and exchange symmetry. We discuss the theory of identical particles and recap the standard algebraic framework for describing the exchange statistics of ... -
Tournaments and Optimality: New Results in Parameterized Complexity
(Doctoral thesis, 2013-11-22) -
Towards a deeper understanding of APN functions and related longstanding problems
(Doctoral thesis, 2021-08-24)This dissertation is dedicated to the properties, construction and analysis of APN and AB functions. Being cryptographically optimal, these functions lack any general structure or patterns, which makes their study very ... -
Towards a Secure Framework for mHealth. A Case Study in Mobile Data Collection Systems
(Doctoral thesis, 2015-11-05)The rapid growth in the mobile communications technology and wide cellular coverage created an opportunity to satisfy the demand for low-cost health care solutions. Mobile Health (a.k.a. mHealth) is a promising health ...