Browsing Øvrige samlinger by Title
Now showing items 25969-25988 of 40063
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On the biogenicity of Fe-oxyhydroxide filaments in silicified low-temperature hydrothermal deposits: Implications for the identification of Fe-oxidizing bacteria in the rock record
(Journal article; Peer reviewed, 2019)Microaerophilic Fe(II)‐oxidizing bacteria produce biomineralized twisted and branched stalks, which are promising biosignatures of microbial Fe oxidation in ancient jaspers and iron formations. Extracellular Fe stalks ... -
On the Boundedness Property of the Inertia Matrix and Skew-Symmetric Property of the Coriolis Matrix for Vehicle-Manipulator Systems
(Journal article; Peer reviewed, 2012)This paper addresses the boundedness property of the inertia matrix and the skew-symmetric property of the Coriolis matrix for vehicle-manipulator systems. These properties are widely used in control theory and Lyapunov-based ... -
On the Braess Paradox with Nonlinear Dynamics and Control Theory
(Journal article; Peer reviewed, 2016)We show the existence of the Braess paradox for a traffic network with nonlinear dynamics described by the Lighthill–Whitham–Richards model for traffic flow. Furthermore, we show how one can employ control theory to avoid ... -
On the Burgers–Poisson equation
(Journal article, 2016)In this paper, we prove the existence and uniqueness of weak entropy solutions to the Burgers-Poisson equation for initial data in L 1 (R). In addition an Oleinik type estimate is established and some criteria on local ... -
On the Catlin Multitype of sums of squares domains
(Peer reviewed; Journal article, 2022)For a sum of squares domain of finite D’Angelo 1-type at the origin, we show that the polynomial model obtained from the computation of the Catlin multitype at the origin of such a domain is likewise a sum of squares domain. ... -
On the Catlin Multitype of Sums of Squares Domains
(Journal article; Peer reviewed, 2022)For a sum of squares domain of finite D’Angelo 1-type at the origin, we show that the polynomial model obtained from the computation of the Catlin multitype at the origin of such a domain is likewise a sum of squares domain. ... -
On the characteristic features of ionization in QED environments
(Peer reviewed; Journal article, 2022)The ionization of molecular systems is important in many chemical processes, such as electron transfer and hot electron injection. Strong coupling between molecules and quantized fields (e.g., inside optical cavities) ... -
On the choice of closure complexity in anisotropic drag closures for filtered Two Fluid Models
(Peer reviewed; Journal article, 2019)Filtered Two Fluid Models (fTFMs) aim to enable accurate industrial-scale simulations of fluidized beds by means of closures accounting for the effects of bubbles and clusters. The present study aims to improve anisotropic ... -
On the Choice of Numerical Methods for Solving Dynamic Equations for Control Systems with Embedded Calculating Tools
(Journal article; Peer reviewed, 2017)Approaches to choice of optimum method as for accuracy and amount of computation at the integration step that makes it possible to range numerical implementation methods for different levels of acceptable error based on ... -
On the comparison of performance-per-cost for coherent and mixed systems
(Peer reviewed; Journal article, 2020)The present paper is concerned with reliability economics, considering a certain performance-per-cost criterion for coherent and mixed systems, as introduced in [Dugas, M.R. & Samaniego, F.J. (2007). On optimal system ... -
On the Complexity Reduction of Coding WSS Vector Processes by Using a Sequence of Block Circulant Matrices
(Journal article; Peer reviewed, 2017)In the present paper, we obtain a result on the rate-distortion function (RDF) of wide sense stationary (WSS) vector processes that allows us to reduce the complexity of coding those processes. To achieve this result, ... -
On the concept of sustainability – assessing the sustainability of large public infrastructure investment projects
(Journal article; Peer reviewed, 2014)Assessing the sustainability of large public investment projects within the general framework of three-pillar thinking is a complex affair. Such ventures involve multiple actors – e.g. planners from various disciplines ... -
On the Construction of Hourly Price Forward Curves for Electricity Prices
(Journal article; Peer reviewed, 2018)There are several approaches in the literature for the derivation of price forward curves (PFCs) which distinguish among each other by the procedure employed for the derivation of seasonality shapes, smoothing technique ... -
On the Contributions of Professor Rögnvaldur Hannesson to Fisheries Economics
(Journal article; Peer reviewed, 2013)We are pleased to present this special feature in honor of Professor Rögnvaldur Hannesson. The papers in this section emerged from a workshop held at the Norwegian School of Economics in Bergen in June 2013 to mark the ... -
On the Control of Numerical Results in the Problems of Identification of Dynamic Energy Objects
(Journal article; Peer reviewed, 2022)The article proposes an approach to solving actual problem of the obtained results’ control in the construction and implementation of algorithms for identifying energy objects based on integral dynamic models. The considered ... -
On the convexity of yield and potential surfaces in rotational hardening critical state models
(Chapter, 2018)This article shows that a common formulation often used for an anisotropic modified cam clay yield and potential surface with a modified Lode angle dependency may become concave for high values of anisotropy. Concave ... -
On the Corrosion Fatigue of Magnesium Alloys Aimed at Biomedical Applications: New Insights from the Influence of Testing Frequency and Surface Modification of the Alloy ZK60
(Peer reviewed; Journal article, 2022)Magnesium alloys are contemporary candidates for many structural applications of which medical applications, such as bioresorbable implants, are of significant interest to the community and a challenge to materials scientists. ... -
On the corrosion, stress corrosion and cytocompatibility performances of ALD TiO2 and ZrO2 coated magnesium alloys
(Journal article; Peer reviewed, 2022)Magnesium alloys are increasingly studied as materials for temporary implants. However, their high corrosion rate and susceptibility to corrosion-assisted cracking phenomena, such as stress corrosion cracking (SCC), continue ... -
On the coupling of damage and single crystal plasticity for ductile polycrystalline materials
(Peer reviewed; Journal article, 2021)A crystal plasticity model accounting for damage evolution and ductile failure in a single crystal due to the presence of voids or micro-cracks is presented. An accurate, robust and computationally efficient single crystal ... -
On the coupling of well posed differential models
(Journal article, 2023)Consider the coupling of 2 evolution equations, each generating a global process. We prove that the resulting system generates a new global process. This statement can be applied to differential equations of various kinds. ...