One of the challenges related to modelling calcium dynamics in cardiac cells is the large difference in the length scales involved. The dyad, where important processes take place, is very small compared to the whole cell. ...

The intention of this thesis is to give a better understanding of the way that subduction zones evolve, to examine the way that different subduction parameters affect each other and finally to demonstrate how visualization ...

Tynne, porøse plater, oskillerende eller holdt fast under påvirkning av en innkommende bølge, er studert. Bølgen vandrer på et fluid som er antatt inkompressibelt og irrotasjonelt, og lineær potensialteori anvendes. Uttrykk ...

Bølgeinduserte strømninger og bølgedempingsrater for ulike overflate-dekker er undersøkt ved hjelp av PIV og ultralydmålere. To økter med eksperimenter av mekanisk genererte monokromatiske bølger som forplanter seg i en ...

The electrical activity in the Purkinje network and the myocardial tissue in the ventricles of the human heart was modeled. The focus was on the Purkinje tree and the coupling of the Purkinje network and the myocardium. ...

In a subsea facility, the pipelines will be surrounded by sea water at 4◦C, which will actively cool the production fluid inside. If temperatures drop below a critical value, water and gas will form unwanted solids called ...

This master thesis presents an experimental study of plunging breakers on a beach with a slope of 5.1◦. The incoming waves are solitary waves with various amplitudes, and the areas investigated are the swash zone and the ...

The parameter dependent Brinkman equation can be used to model viscous and porous flow. The equation covers a family of problems, ranging from the Stokes problem to the Darcy problem. We apply the stabilization methods; ...

Målet med oppgaven er å undersøke isomorfier mellom visse Heisenberginvariante variteter eller finne ut når to slike er isomorfe.

A short introduction to the Nitsche method is given for the overlapping meshes case. Several algorithms for collision detection and mesh decomposition are reviewed and implemented, and a greedy triangulation routine is ...

Dimensjonering for jordskjelv har etter innføringen av Eurokodene blitt et mer aktuelt tema i Norge. NS-EN 1998-1:2004+NA:2008 Eurokode 8: Prosjektering av konstruksjoner for seismisk påvirkning Del 1: Allmenne regler, ...

Formålet med denne rapporten er å utlede og vurdere mulighet for bruk av en teoretisk metode som baserer seg på anvendelse av en konseptuel beregningsparameter, ekvivalent initial sprekkdybde (EIFS), i den tradisjonelle ...

The first part of this thesis will build up an overview of a small section of the field of subdivision, namely binary univariate schemes. Since most of the theory on subdivision is based on a uniform spacing of the initial ...

Denne oppgaven beskriver en automatisk algoritme for å koble sammen AIS-data, Automatic Identification System, med en eksisterende algoritme for å detektere oljesøl i SAR-bilder, Synthetic aperture radar. AIS er et system ...

The main objective of the present thesis was to study how composite patches can reduce the stress intensity in cracked steel plates, and how these patches, by reducing the stress intensity, can limit the extent of fatigue ...

Image enhancement has many applications. This thesis is devoted to image inpainting, which is to fill in the corrupted or missing pixels in a meaningful way. These pixels may be deteriorated or missing for various reasons, ...

Fenomenene utilsiktede deformasjoner og skjærriss har en spesiell tendens til å oppstå i fritt frambygg bruer, og har de siste tiårene tiltrukket seg stor oppmerksomhet blant bruaktører både i Norge og resten av verden. ...

Introduction: An aneurysm is an acquired, abnormal dilation of a blood vessel. Computational fluid dynamics (CFD) have been used to try and understand this phenomena. CFD studies use assumptions in the simulation model and ...

Cylindrical shells are common configurations within the technology. The transition from the side to the bottom on a ship has the shape of a fourth of a cylindrical shell. Both ring and stringer stiffeners can be added to ...

The purpose of this thesis is to perform some mathematical analysis and study numerical solutions of different models describing (different aspects of) axonal transport. We will explain our numerical results using mathematical ...

Verden har stadig økende behov for energi, og for å få bærekraftige løsninger er det et ønske om at denne økningen skal bli dekket av fornybare energikilder, samt at eksisterende energiproduksjon fra fossile kilder blir ...

In this thesis we present a numerical solver for actively contracting heart muscle tissue. It uses the finite element method for the discretization and is entirely based on free open source software packages made available ...

In this thesis, we investigate the application of duality-based goal-oriented adaptive error control to the computation of shear stresses in biomedical flow problems. As a model problem, we consider the linear Stokes ...

Verden har stadig økende behov for energi, og for å få bærekraftige løsninger er det et ønske om at denne økningen skal bli dekket av fornybare energikilder, samt at eksisterende energiproduksjon fra fossile kilder blir ...

The cardiovascular system consists of the heart and the vessels. The pressure in the arteries is regulated by the baroreflex, which means pressure reflex. The baroreflex is a part of the central nervous system. The main ...

This thesis has been written about the analytical and semi-analytical formulae as an alternative to finite element analyses in computing lateral deflection, buckling loads and ultimate capacity of steel elastomer sandwich ...

This master's thesis studies the kayak rudder flow phenomena and uses analytic, numerical and experimental methods to describe the force coefficients of kayak rudders. Also an analysis of the sport of flatwater kayaking ...

In the shipping industry, there is an increase in the requirement of determining a ship's strength when it comes to collision events. This involves ship-against-ship collisions, but also strength against damage caused by ...

Master oppgaven presenterer ulike bølgetall/frekvens spekter som viser målte dispersjons relasjoner utledet fra målte laboratorie irregulære lang-kammede bølge felt. De målte dispersjons relasjonene er sammenlignet med den ...

In general notice, the horizontal component of ground motions will normally always play the dominant role for response of buildings compared to the response from the vertical component. Therefore, the vast literature is ...

Denne oppgaven kartlegger den naturlige gruppen som virker på Rubik's kube. Gruppen består av de forskjellige trekkene som kan gjøres på kuben.

I ballistikken er det generelt gjort lite med forskning for å forstå vibrasjoner som oppstår i rifleløp, noe som nok skyldes at det nok er liten økonomisk gevinst ved å forske på finkalibret våpen. Det er derimot gjort mye ...

Several plate theories have been developed to describe the static and dynamic behaviour of plates. This thesis is predominantly a study of plate theories including shear effects, with emphasis on higher order shear deformation ...

The motivation of writing this thesis arises in connection with the interpretation of wave measurements: How can the wave height be determined from a grazing incidence radar image? How well can nonlinearity of the ocean ...

The topic of this master's thesis is modeling of diffusion of neurotransmitters in the extracellular space (ECS) of the central nervous system (CNS). In the models presented here diffusion will be affected by the binding ...

If we want to interpolate a set of data with a curve, we have several choices. We can use polynomial interpolation, spline interpolation or interpolatory subdivision. Polynomial interpolation gives high degrees for large ...

Grunnet et stadig økende behov for energi i en hurtig industrialiserende verden, samt økt fokus på kilden til den energien vi bruker i forbindelse med de antatte menneskeskapte klimaendringene, har grønnenergi fått stor ...

I offshorenæringen er det behov for varme, strøm og trykk. Derfor er det plassert ut ulike gassturbiner. En gassturbin er en gassdrevet maskin som gjennom en forbrenningsprosess, omdanner kjemisk bundet energi til mekanisk ...

Chiari I malformation characterizes by cerebellar tonsils descending below foramen magnum, leading to obstruction of subarachnoid space (SAS) that alters the cerebrospinal fluid (CSF) flow. The condition leads to diverse ...

Denne oppgaven omhandler kapasitetsberegning av skruer i gjenget blindhull. For skrueforbindelser er det viktig at kapasiteten beregnes i henhold til gjeldende nasjonalt regelverk. For denne type forbindelser inneholder ...

Bakgrunn: En cerebral aneurysme er en dilatasjon av en blodåre, som kan utvide seg og briste, og derved forårsake blødninger i og rundt hjernen. En slik tilstand er alvorlig og medfører ofte alvorlig hjerneskade eller død. ...

Oppgaven omhandler komplett positive matriser, det vil si matriser som kan skrives på formen A = BB^T der B er elementvis ikkenegativ. Hovedproblemet i denne teorien er å avgjøre hvorvidt en matrise er komplett positiv. I ...

This thesis is an analysis of the mechanical properties of bulk adhesive and the behaviour of adhesively bonded single lap joints at room temperature and sub-zero temperatures. The process of making test specimens and ...

This thesis presents experiments on run-up of solitary waves on a beach of 10◦ inclination. The purpose of this study is to find out what causes the lower maximum run-up heights in experimental results compared with results ...

Denne masteroppgaven gir et overblikk over i-planet skademekanismer i fiber armerte polymer kompositt-laminater. Tre forskjellige feil kriterier er evaluert, og Puck feil kriteriet er beskrevet og testet i detalj. En ...

Denne oppgaven omhandler analyse av en 4-tomsflaske i kompositt. Den tar for seg kompositteori og prinsippene for en rakettmotor. I første del blir det sett på en tynnvegget sylinder, der kompositt og kontinuumselementer ...

In "Financial Contagion" (2000), Allen and Gale showed how an interbank market can be affected by regional liquidity shocks, and how a local bank crisis can become global when banks are interconnected through deposits. The ...

At toga er punktlege er ein av dei viktigaste indikatorane på at togtrafikken fungerer, og høg andel punktlege tog er naudsynt om jernbana skal vera ein attraktiv transportform. I alle jernbanenett vil det skje at tog ...

Intensity modulated radiation therapy (IMRT) is a relatively new treatment technique used to treat different kinds of cancer. Each beam delivering radiation to the patient is split into smaller beamlets whose intensities ...

The main objective of the thesis is to determine the capacity against buckling of the main girder web at a launching stage. As the webs and the flanges of the main girder must defined as slender structural elements (class ...

Økende fokus på grønn energi har gjort at fokuset på vindmøller har økt betraktelig de siste årene. Store åpne havområder gjør at Norge har et stort potensial til utnytte denne natur-ressursen. Lite litteratur finnes på ...

During the past decades, extensive research on topics related to earthquakes and seismic loading has been conducted. This is partly due to the fact that earthquakes occur relatively frequent, and that the consequenses of ...

Syringomyelia is the development of fluid-filled cysts in the spinal cord. This disease is frequently seen together with the Chiari Malformation, a medical condition characterized by the herniation of the cerebellar tonsils ...

The theory behind the RANS equations and common DRSM modeling terms is presented. Most current DRSM turbulence models have models for the redistribution tensor which are developed for homogeneous flow. The Elliptic Relaxation ...

The aerodynamic effects on a wind turbine blade's tip region are investigated using the Lifting Line Theory (LLT). The LL equation is solved using two different approaches: the Fourier Method (FM) and the Simplification ...

Investigation of instantaneous wall pressure in a volume flow meter design has been carried out. The focus of the study was to obtain spectral analysis of the differential pressure between two pressure transducers. The ...

Adhesive bonding offers a simple and efficient way of joining structural components without weakening them by holes or welding. The objective in the thesis is to examine the mechanical response of adhesively bonded joints, ...

Det har i løpet av de siste tiårene blitt forsket intensivt på jordskjelv og seismiske lastvirkninger. Dette skyldes bl.a. at jordskjelv opptrer relativt hyppig og at konsekvensene ofte er meget alvorlige. Det har derfor ...

This thesis treats the laminar motion of two immiscible fluids in a pipe, where the original fluid occupying the pipe is much more viscous than the replacing fluid. Earlier works have shown that the less viscous fluid tends ...

Current oil exploration depths warrant the need for a better understanding of subsea pipeline collapse capacities. UOE produced line pipe serves as an industry standard, but possess features that can adversely affect ...

The Python programming language has gradually gained popularity in the field of scientific computing. Nowadays, Python is considered to be a great programming language for scientific computing and has attracted significant ...

This master thesis examines the condition numbers of different bases for the Finite Element Exterior Calculus (FEEC) (Arnold et. al. (2006)), with the aim of improving the condition number of stiffness matrices formulated ...

Bidomenemodellen, utviklet i 1970-årene av Tung, er en meget god og velbrukt modell for å studere den elektriske flyten i hjertet. Denne oppgaven fokuserer i hovedsak på en forenklet versjon av Bidomenemodellen, nemlig ...

The main purpose of this thesis is to study a singular finite-horizon portfolio optimization problem, and to construct a penalty approximation and numerical scheme for the corresponding Hamilton- Jacobi-Bellman (HJB) ...

Diffraksjonsproblemet for en vertikal sylinder som skjærer en fri overflate er løst til og med tredje orden ved hjelp av perturbasjonsteori i langbølgeregimet i tråd med FNV teori. Det ikkelineære hastighetspotensialet til ...

Biological weapons is the aggressive use of organisms or toxins, also known as biological warfare agents. These weapons are invisible, odorless, tasteless and can be spread without a sound, making it difficult to detect ...

Criteria for estimating the ultimate strength, using a semi-analytical approach, of unstiffened and stiffened plates with a free edge are addressed. The semi-analytical approach is based on a Rayleigh-Ritz discretisation ...

The current cosmological concordance model states that the fluctuations in the Cosmic Microwave Background (CMB) should be Gaussian and isotropic. However, many studies claim to have found small deviations from this theory. ...

Shaken Baby Syndrome (SBS) is a brutal result of child abuse with severe and often fatal outcome. This Master's thesis describes some results from the analysis of acceleration data in a biomechanical experiment of dummy ...

Sandwich Plate System (SPS) is a sandwich construction consisting of steel face sheets and polyurethane core. The main objective for the steel faces is to resist bending and in-plane loads, while the compliant core transfers ...

Scheduling problems are central in combinatorial optimization, and there exists a huge literature describing both problems and algorithms. Master surgery scheduling (MSS), where one must assign surgery teams in hospitals ...

Dynamisk respons vurdering av et membran type lastkontainersystem for flytende naturgass. Utvikling av impulsresponsfunksjoner som sammen med konvolusjon gir muligheten til rask utregning av den dynamiske responsen til ...

Stiffened plates are common components in many structures, from plate girders and box girder bridges to ships and offshore structures. Stiffened and unstiffened plates buckle into doubly curved surfaces which complicates ...

In this master thesis we study the linear and nonlinear acoustic field propagation. We also look into the possibility of estimating the non-linearly generated second harmonic by linear propagation of two times the fundamental ...

Denne oppgaven omhandler sammenføyninger av åpne tverrsnitt ved bruk av skrueforbindelser. Det er veldig viktig at skrudde sammenføyninger har en hensiktsmessig utforming, og at kapasiteten dimensjoneres “riktig” etter ...

Uttauingskrefter og bevegelser av en komplett vindturbin under installasjon har blitt aanalysert. (Se engelsk sammendrag for mer detaljer)

This master thesis presents a collection of tools for solving partial differential equations using Python. Three different Python modules make up the majority of the thesis. When solving partial differential equations ...

Particle deposition in the lungs have so far been modeled mainly with the assumption of laminar flow. In the present study, several Reynolds-Averaged Navier-Stokes (RANS) turbulence models are used to simulate the airflow ...

Det har blitt utviklet en andre ordens ikke linær Schrödinger metode for å estimere kinematikk i irregulær sjø på endelig dyp. Hastighetspotensialet og tilhørende overflatehevning har blitt uviklet under antagelse om sakte ...

Sound traveling through water was traditionally thought to be a linear or close to linear process. With the recent improvement of echosounders and their accompanying equipment, one has become aware that excess sound ...

In this paper were shown derivation of methods of Roe, Haarten-Lax-Leer and Lax Friedrichs, using of these methods in splitting schemes for shallow water with magnetohydrodynamics. An analysis of behavior of such schemes ...

Nemo Engineering AS (Nemo) has built a series of Tees for welding into offshore pipelines for transportation of hydrocarbons. The purpose with the Tees is to allow connection of new pipelines from existing or future oil ...

Composite structures consisting of plates or plate-like elements are used widely in windturbine blades and in certain types of ships, particularly naval ships. These structual elements are often subjected to significant ...

Numerical simulation of the airflow inside a slowly rotating aerosol chamber is carried out using a high resolution LES and several RANS based turbulence models. The result of the LES revealed a complex turbulent flow field ...

Positive Mean Value interpolasjon har blitt presentert som en ny metode for å interpolere funksjoner definert på randa av et planart domene. Metoden er basert på Mean Value interpolasjon, og har vist seg å være nyttig i ...

To protect sensitive equipment from the inhospitable environment, offshore installations in arctic regions often depend on placing this equipment on the seabed. Installations on the surface will be subjected to environmental ...

This thesis describes briefly the main components of a deep water WOR and presents results of the structural and fatigue analyses on some of the most critical regions of the riser under normal conditions. The thesis considers ...

In reservoir simulation, the modeling and the representation of wells are critical factors. The standard approach for well modeling is to couple the well to the reservoir through the use of a well index, which relates the ...