• On Stability and Convergence of Distributed Filters 

      Talebi, Sayedpouria; Werner, Stefan; Gupta, Vijay; Huang, Yih-Fang (Peer reviewed; Journal article, 2021)
      Recent years have bore witness to the proliferation of distributed filtering techniques, where a collection of agents communicating over an ad-hoc network aim to collaboratively estimate and track the state of a system. ...
    • On stratification for spaces with Noetherian mod p cohomology 

      Barthel, Tobias; Castellana, Natalia; Heard, Drew Kenneth; Valenzuela, Gabriel (Peer reviewed; Journal article, 2022)
      Let $X$ be a topological space with Noetherian mod $p$ cohomology and let $C^*(X;\Bbb{F}_p)$ be the commutative ring spectrum of $\Bbb{F}_p$-valued cochains on $X$. The goal of this paper is to exhibit conditions under ...
    • On strength and stiffness of screwed-in threaded rods embedded in softwood 

      Stamatopoulos, Haris; Malo, Kjell Arne (Peer reviewed; Journal article, 2020)
      Screwed-in threaded rods with wood screw threads feature high axial capacity and stiffness and can be used as fasteners in highly resistant and stiff timber connections. The purpose of the present paper is to review the ...
    • On support varieties and tensor products for finite dimensional algebras 

      Bergh, Petter Andreas; Sandøy, Mads Hustad; Solberg, Øyvind (Peer reviewed; Journal article, 2020)
      It has been asked whether there is a version of the tensor product property for support varieties over finite dimensional algebras defined in terms of Hochschild cohomology. We show that in general no such version can ...
    • On technologies for shale barrier evaluation in the North Sea 

      Strand, Geir Ove (Chapter, 2018)
      Cement evaluation tools have been used in the oil industry for decades to examine the integrity of cement bonding to the well casing and openhole. It has been suggested that such tools also can be used to verify the presence ...
    • On the accuracy of gradient estimation in extremum-seeking control using small perturbations 

      Haring, Mark; Johansen, Tor Arne (Journal article; Peer reviewed, 2018)
      In many extremum-seeking control methods, perturbations are added to the parameter signals to estimate derivatives of the objective function (that is, the steady-state parameter-to-performance map) in order to optimize the ...
    • On the accuracy of the finite volume approximations to nonlocal conservation laws 

      Aggarwal, Aekta; Holden, Helge; Vaidya, Ganesh Kiran (Peer reviewed; Journal article, 2023)
    • On the Acquisition and Reproduction of Material Appearance 

      Sole, Aditya Suneel; Gigilashvili, Davit; Midtfjord, Helene B.; Guarnera, Dar'ya; Guarnera, Giuseppe Claudio; Thomas, Jean-Baptiste; Hardeberg, Jon Yngve (Chapter, 2019)
      Currently, new technologies (e.g. 2.5D and 3D printing processes) progress at a fast pace in their capacity to (re)produce an ever-broader range of visual aspects. At the same time, a huge research effort is needed to ...
    • On the Acquisition and Reproduction of Material Appearance 

      Sole, Aditya Suneel; Gigilashvili, Davit; Midtfjord, Helene B.; Guarnera, Dar'ya; Guarnera, Giuseppe Claudio; Thomas, Jean-Baptiste; Hardeberg, Jon Yngve (Chapter, 2019)
      Currently, new technologies (e.g. 2.5D and 3D printing processes) progress at a fast pace in their capacity to (re)produce an ever-broader range of visual aspects. At the same time, a huge research effort is needed to ...
    • On the analysis of bonded step lap joints 

      R, Jones; D, Peng; JG, Michopoulos; N, Phan; Berto, Filippo (Journal article; Peer reviewed, 2018)
      This paper discusses the stress and strain states in adhesively bonded step lap joints from the perspective of the strain energy density solutions determined via the elastic and elastic-plastic solutions obtained using the ...
    • On the appearance of objects and materials: Qualitative analysis of experimental observations 

      Gigilashvili, Davit; Thomas, Jean Baptiste; Pedersen, Marius; Hardeberg, Jon Yngve (Journal article; Peer reviewed, 2021)
      Perception of appearance of different materials and objects is a complex psychophysical phenomenon and its neurophysiological and behavioral mechanisms are far from being fully understood. The various appearance attributes ...
    • On the Applicability of Sustainability Assessment Tools in Manufacturing 

      Moldavska, Anastasiia; Welo, Torgeir (Journal article; Peer reviewed, 2015)
      The literature on sustainability assessment abounds with different tools, methods, models and frameworks, and the amount of literature on sustainability assessment applied to the field of manufacturing is rapidly growing. ...
    • On the Applicability of Synthetic Data for Face Recognition 

      Zhang, Haoyu; Grimmer, Marcel; Ramachandra, Raghavendra; Bylappa Raja, Kiran; Busch, Christoph (Chapter, 2021)
      Face verification has come into increasing focus in various applications including the European Entry/Exit System, which integrates face recognition mechanisms. At the same time, the rapid advancement of biometric ...
    • On the Application of Homomorphic Encryption to Face Identification 

      Drozdowski, Pawel; Buchmann, Nicolas; Rathgeb, Christian; Margraf, Marian; Busch, Christoph (Chapter, 2019)
      The data security and privacy of enrolled subjects is a critical requirement expected from biometric systems. This paper addresses said topic in facial biometric identification. In order to fulfil the properties of ...
    • On the application of the volume free strain energy density method to blunt V-notches under mixed mode condition 

      Foti, Pietro; Razavi, Seyed Mohammad Javad; Ayatollahi, M; Marsavina, L; Berto, Filippo (Peer reviewed; Journal article, 2020)
      This work investigates the possibility to apply the strain energy density method, as regards blunt V-notches under mixed loading condition, through finite element models with a free mesh pattern. It is worth underlining ...
    • On the Atomic Structure of the β′′ Precipitate by Density Functional Theory 

      Frafjord, Jonas; Ringdalen, Inga Gudem; Holmestad, Randi; Friis, Jesper (Peer reviewed; Journal article, 2023)
      The substitution of elements into the precipitate in the 6xxx-series of aluminium alloys is an interface sensitive problem. The strain caused by the misfit between the precipitate and the matrix interacts with the size ...
    • On the ballistic impact resistance of additive manufactured maraging steel targets compared to that of cast targets 

      Edwards-Mowforth, Maisie; Costas, Miguel; Kristoffersen, Martin; Teixeira-Dias, Filipe; Børvik, Tore (Chapter, 2023)
      The advent of additive manufacturing (AM) in the defence industry has introduced possibilities for customisable and optimised light-weight armour. Maraging steel is well suited to AM and takes on ultra high-strength post ...
    • On the ballistic perforation resistance of a sandwich structure with aluminium skins and aluminium foam core 

      Brekken, Kristoffer Aune; Bakk, Maria S.; Dey, Sumita; Berstad, Torodd; Reyes, Aase; Børvik, Tore (Peer reviewed; Journal article, 2023)
      Sandwich structures have proven to be excellent energy absorbents and are found in various protective solutions. In this study, an inhomogeneous aluminium foam was used as core material in a sandwich panel with skins of ...
    • On the ballistic perforation resistance of additive manufactured AlSi10Mg aluminium plates 

      Kristoffersen, Martin; Costas, Miguel; Koenis, Tim; Brøtan, Vegard; Paulsen, Christian Oen; Børvik, Tore (Journal article; Peer reviewed, 2019)
      Materials and structures made through additive manufacturing (AM) have received a lot of attention lately due to their flexibility and ability to customize structural components of complex geometry. One range of application ...
    • On the Bifurcation Diagram of the Capillary–Gravity Whitham Equation 

      Ehrnstrom, Mats; Remonato, Filippo; Mæhlen, Ola Isaac Høgåsen; Johnson, Mathew A (Journal article, 2019)
      We study the bifurcation of periodic travelling waves of the capillary–gravity Whitham equation. This is a nonlinear pseudo-differential equation that combines the canonical shallow water nonlinearity with the exact ...