Browsing Institutt for matematiske fag by Title
Now showing items 1844-1863 of 2364
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Sampling on Quasicrystals
(Master thesis, 2011)We prove that quasicrystals are universal sets of stable sampling in any dimension. Necessary and sufficient density conditions for stable sampling and interpolation sets in one dimension are studied in detail. -
SARS-CoV-2 aerosol transmission in schools: The effectiveness of different interventions
(Peer reviewed; Journal article, 2022)BACKGROUND: Indoor aerosol transmission of SARS-CoV-2 has been widely recognised, especially in schools where children remain in closed indoor spaces and largely unvaccinated. Measures such as strategic natural ventilation ... -
A scalarization scheme for binary relations with applications to set-valued and robust optimization
(Peer reviewed; Journal article, 2020)In this paper, a method for scalarizing optimization problems whose final space is endowed with a binary relation is stated without assuming any additional hypothesis on the data of the problem. By this approach, nondominated ... -
Scattering and Uncertainty for discrete models
(Doctoral theses at NTNU;2017:37, Doctoral thesis, 2017) -
Scenario tree generation for stochastic programming : cases from finance
(Dr. ingeniøravhandling, 0809-103X; 2003:55, Doctoral thesis, 2003)In recent years, stochastic programming has gained an increasing popularity within the mathematical programming community, mainly because the present computing power allows users to add stochasticity to models that were ... -
Scientific Visualization of Multidimensional Geometric Data:a Study Inspired by the Simulator BedSim of LKAB
(Doktoravhandlinger ved NTNU, 1503-8181; 2010:100, Doctoral thesis, 2010)This work began as a joint research project between Narvik University College and the R&D Department of LKAB (www.lkab.com), an international high-tech iron ore processing company seated in Kiruna in northern Sweden. The ... -
SDElib: Creating, solving and analyzing stochastic differential equations - A program written in Python 3.5
(Master thesis, 2017)This paper is about a Python package called sdelib intended to work with stochastic differential equations (SDEs). The package can solve SDEs, estimate strong and weak orders of convergence of SDEs, and plot stability ... -
Seasonal distribution of an opportunistic apex predator (Tursiops truncatus) in marine coastal habitats of the Western Mediterranean Sea
(Peer reviewed; Journal article, 2022)Assessing the distribution of marine apex–predators is pivotal to understanding community interactions and defining management goals. However, several challenges arise in both estimates and predictions considering the ... -
Seasonal diversity dynamics of a boreal zooplankton community under climate impact
(Journal article; Peer reviewed, 2022)Seasonality and long-term environmental variability afect species diversity through their efects on the dynamics of species. To investigate such efects, we ftted a dynamic and heterogeneous species abundance model generating ... -
The second moment of Sn(t) on the Riemann hypothesis
(Journal article; Peer reviewed, 2021) -
A second-order numerical method for the aggregation equations
(Peer reviewed; Journal article, 2020)Abstract: Inspired by so-called TVD limiter-based second-order schemes for hyperbolic conservation laws, we develop a formally second-order accurate numerical method for multi-dimensional aggregation equations. The method ... -
Secure Messaging with Crypho
(Master thesis, 2020)I denne oppgaven gir vi et overblikk over meldingsapplikasjonene, Crypho og Signal, som bruker ende-til-ende-kryptering med symmetrisk kryptering. Vi bruker en spill-basert metode til å undersøke sikkerheten til kanaler ... -
Security analysis of blind signatures and group signatures
(Master thesis, 2007)We present the latest formal security definitions for blind signature schemes and for group signature schemes. We start by introducing theory about algorithms, probability distributions, distinguishers, protocol attacks ... -
Security Analysis of Electronic Identity Schemes
(Master thesis, 2009)This report is about electronic identity (eID) schemes and a security analysis in the Universal Composable (UC) security framework of Transport Layer Security (TLS) and OpenID. The security analysis show that secure ... -
Security Analysis of the NTRUEncrypt Public Key Encryption Scheme
(Master thesis, 2007)The public key cryptosystem NTRUEncrypt is analyzed with a main focus on lattice based attacks. We give a brief overview of NTRUEncrypt and the padding scheme NAEP. We propose NTRU-KEM, a key encapsulation method using ... -
Security for Electronic Voting Systems
(Doctoral theses at NTNU;2023:381, Doctoral thesis, 2023) -
Security notions for cloud storage and deduplication
(Journal article; Peer reviewed, 2018)Cloud storage is in widespread use by individuals and enterprises but introduces a wide array of attack vectors. A basic step for users is to encrypt their data, yet it is not obvious what security properties are required ... -
Security of Signatures in The Quantum Random Oracle Model
(Master thesis, 2023)Målet med denne oppgaven er å studere beviselig sikkerhet i \emph{post-kvante kryptografi} (PQC) og andvende dette mot CRYSTALs gitter baserte signatur Dilithium. Først definerer vi den nødvendige teorien for å forstå ... -
Segal Spaces in Homotopy Type Theory
(Master thesis, 2022)Homotopi type teori er et grunnleggende språk for å gjøre homotopi invariant matematikk, og dermed ville en forventet at det var et naturlig rammeverk å studere (∞,1)-kategorier i. Desverre er det for øyeblikket et åpent ... -
Segal spaces, spans, and semicategories
(Peer reviewed; Journal article, 2021)We show that Segal spaces, and more generally category objects in an -category , can be identified with associative algebras in the double -category of spans in . We use this observation to prove that “having identities” ...