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  • Antarctic climate variability on regional and continental scales over the last 2000 years 

    Stenni, Barbara; Curran, Mark A.J.; Abram, Nerilie J.; Orsi, Anais; Goursaud, Sentia; Masson-Delmotte, Valerie; Neukom, Raphael; Goosse, Hugues; Divine, Dmitry V; Van Ommen, Tas; Steig, Eric J.; Dixon, Daniel A.; Thomas, Elizabeth R.; Bertler, Nancy A.N.; Isaksson, Elisabeth; Ekaykin, Alexey; Werner, Martin; Frezzotti, Massimo (Journal article; Tidsskriftartikkel; Peer reviewed, 2017-11-17)
    Climate trends in the Antarctic region remain poorly characterized, owing to the brevity and scarcity of direct climate observations and the large magnitude of interannual to decadal-scale climate variability. Here, ...
  • Generalized Hamming Weights for Almost Affine Codes 

    Johnsen, Trygve; Verdure, Hugues (Journal article; Tidsskriftartikkel; Peer reviewed, 2017-01-17)
    We define generalized Hamming weights for almost affine codes. We show that this definition is natural since we can extend some well known properties of t he generalized Hamming weights for linear codes, to almost ...
  • Relative generalized hamming weights and extended weight polynomials of almost affine codes 

    Johnsen, Trygve; Verdure, Hugues (Journal article; Tidsskriftartikkel; Peer reviewed, 2017-08-23)
    This paper is devoted to giving a generalization from linear codes to the larger class of almost affine codes of two different results. One such result is how one can express the relative generalized Hamming weights of ...
  • A global multiproxy database for temperature reconstructions of the Common Era 

    Emile-Geay, Julien; McKay, Nicholas P; Kaufman, Darrell S; Von Gunten, Lucien; Wang, Jianghao; Anchukaitis, Kevin J; Abram, Nerilie J; Addison, Jason A; Curran, Mark AJ; Evans, Michael N; Henley, Benjamin J; Hao, Zhixin; Martrat, Belen; McGregor, Helen V; Neukom, Raphael; Pederson, Gregory T; Stenni, Barbara; Thirumalai, Kaustubh; Werner, Johannes P; Xu, Chenxi; Divine, Dmitry V; Dixon, Bronwyn C; Gergis, Joelle; Mundo, Ignacio A; Nakatsuka, Takeshi; Phipps, Steven J; Routson, Cody C; Steig, Eric J; Tierney, Jessica E; Tyler, Jonathan J; Allen, Kathryn J; Bertler, Nancy AN; Bjorklund, Jesper; Chase, Brian M; Chen, Min-Te; Cook, Ed; De Jong, Rixt; DeLong, Kristine L; Dixon, Daniel A; Ekaykin, Alexey A; Ersek, Vasile; Filipsson, Helena L; Francus, Pierre; Freund, Mandy B; Frezzotti, Massimo; Gaire, Narayan P; Gajewski, Konrad; Ge, Quansheng; Goosse, Hugues; Gornostaeva, Anastasia; Grosjean, Martin; Horiuchi, Kazuho; Hormes, Anne; Husum, Katrine; Isaksson, Elisabeth; Kandasamy, Selvaraj; Kawamura, Kenji; Kilbourne, K Halimeda; Koc, Nalan; Leduc, Guillaume; Linderholm, Hans W; Lorrey, Andrew M; Mikhalenko, Vladimir; Mortyn, P Graham; Motoyama, Hideaki; Moy, Andrew D; Mulvaney, Robert; Munz, Philipp M; Nash, David J; Oerter, Hans; Opel, Thomas; Orsi, Anais J; Ovchinnikov, Dmitriy V; Porter, Trevor J; Roop, Heidi A; Saenger, Casey; Sano, Masaki; Sauchyn, David; Saunders, Krystyna M; Seidenkrantz, Marit-Solveig; Severi, Mirko; Shao, Xuemei; Sicre, Marie-Alexandrine; Sigl, Michael; Sinclair, Kate; St George, Scott; St Jacques, Jeannine-Marie; Thamban, Meloth; Thapa, Udya Kuwar; Thomas, Elizabeth R; Turney, Chris; Uemura, Ryu; Viau, Andre E; Vladimirova, Diana O; Wahl, Eugene R; White, James WC; Yu, Zicheng; Zinke, Jens (Journal article; Tidsskriftartikkel; Peer reviewed, 2017-07-11)
    Reproducible climate reconstructions of the Common Era (1 CE to present) are key to placing industrial-era warming into the context of natural climatic variability. Here we present a community-sourced database of ...
  • Younger Dryas ice margin retreat triggered by ocean surface warming in central-eastern Baffin Bay 

    Oksman, Mimmi; Weckström, Kaarina; Miettinen, Arto; Juggins, Stephen; Divine, Dmitry V; Jackson, Rebecca; Telford, Richard; Korsgaard, Niels J.; Kučera, Michal (Journal article; Tidsskriftartikkel; Peer reviewed, 2017-10-18)
    The transition from the last ice age to the present-day interglacial was interrupted by the Younger Dryas (YD) cold period. While many studies exist on this climate event, only few include high-resolution marine records ...
  • Does proximity of women to facilities with better choice of contraceptives affect their contraceptive utilization in rural Ethiopia? 

    Shiferaw, Solomon; Spigt, Mark; Seme, Assefa; Amogne, Ayanaw; Skrøvseth, Stein Olav; Desta, Selamawit; Radloff, Scott; Tsui, Amy; Dinant, Geert-Jan (Journal article; Tidsskriftartikkel; Peer reviewed, 2017-11-13)
    Background:<br>There is limited evidence of the linkage between contraceptive use, the range of methods available and level of contraceptive stocks at health facilities and distance to facility in developing countries. The ...
  • Surface water conditions and calcium carbonate preservation in the Fram Strait during marine isotope stage 2, 28.8–15.4 kyr 

    Zamelczyk, Katarzyna; Rasmussen, Tine Lander; Husum, Katrine; Godtliebsen, Fred; Hald, Morten (Journal article; Tidsskriftartikkel; Peer reviewed, 2014-01-14)
    We present a high-resolution record of calcium carbonate preservation alongside the distribution pattern of planktic foraminifera from the Fram Strait. The record covers the marine isotope stage (MIS) 2, 28.8 to 15.4 kyr, ...
  • Analysis of free text in electronic health records for identification of cancer patient trajectories 

    Jensen, Kasper; Soguero-Ruiz, Cristina; Mikalsen, Karl Øyvind; Lindsetmo, Rolv-Ole; Kouskoumvekaki, Irene; Girolami, Mark; Skrovseth, Stein Olav; Augestad, Knut Magne (Journal article; Tidsskriftartikkel; Peer reviewed, 2017-04-07)
    With an aging patient population and increasing complexity in patient disease trajectories, physicians are often met with complex patient histories from which clinical decisions must be made. Due to the increasing rate ...
  • Using anchors from free text in electronic health records to diagnose postoperative delirium 

    Mikalsen, Karl Øyvind; Soguero-Ruiz, Cristina; Jensen, Kasper; Hindberg, Kristian; Gran, Mads; Revhaug, Arthur; Lindsetmo, Rolv-Ole; Skrøvseth, Stein Olav; Godtliebsen, Fred; Jenssen, Robert (Journal article; Tidsskriftartikkel; Peer reviewed, 2017-09-19)
    Objectives:<br> Postoperative delirium is a common complication after major surgery among the elderly. Despite its potentially serious consequences, the complication often goes undetected and undi ...
  • Comparison of computer systems and ranking criteria for automatic melanoma detection in dermoscopic images 

    Møllersen, Kajsa; Zortea, Maciel; Schopf, Thomas Roger Griesbeck; Kirchesch, Herbert M.; Godtliebsen, Fred (Journal article; Tidsskriftartikkel; Peer reviewed, 2017-12-21)
    Melanoma is the deadliest form of skin cancer, and early detection is crucial for patient survival. Computer systems can assist in melanoma detection, but are not widespread in clinical practice. In 2016, an open challenge ...
  • Leakage from medically-certified to self-certified workplace absence among norwegian employees 

    Karlsen, Geir Runar; Ytterstad, Elinor (Journal article; Tidsskriftartikkel; Peer reviewed, 2017-12-05)
    There are two different kinds of sickness absence in Norway: self-certified absence (SCA), and medically-certified absence (MCA). In this study of 6437 Norwegian employees, we applied logistic regression models for a ...
  • Elemental carbon measurements in European Arctic snow packs 

    Forsström, S.; Isaksson, Elisabeth; Skeie, Ragnhild Bieltvedt; Ström, Johan; Pedersen, CA; Hudson, S.R.; Berntsen, Terje Koren; Lihavainen, H.; Godtliebsen, Fred; Gerland, Sebastian (Journal article; Tidsskriftartikkel; Peer reviewed, 2013-12-26)
    Black carbon (BC) and other light-absorbing particles deposited on snow and ice are known to perturb the surface radiative balance. There are few published observations of the concentration of these particles in the snow ...
  • Dynamic self-organisation of haematopoiesis and (a)symmetric cell division 

    Måløy, Marthe; Måløy, Frode; Jakobsen, Per; Brandsdal, Bjørn Olav (Journal article; Tidsskriftartikkel; Peer reviewed, 2016-12-05)
    A model of haematopoiesis that links self-organisation with symmetric and asymmetric cell division is presented in this paper. It is assumed that all cell divisions are completely random events, and that the daughter ...
  • Statistics of Regional Surface Temperatures after 1900: Long-Range versus Short-Range Dependence and Significance of Warming Trends 

    Løvsletten, Ola; Rypdal, Martin wibe (Journal article; Tidsskriftartikkel; Peer reviewed, 2016)
    This paper studies regional climate variability for the time period 1900–2013 using parsimonious stochastic models. Instrumental data records on 5° × 5°, 2° × 2°, and equal-area grids are examined. A long-range dependent ...
  • Spectral characteristics of instrumental and climate model surface temperatures 

    Fredriksen, Hege-Beate; Rypdal, Kristoffer (Journal article; Tidsskriftartikkel; Peer reviewed, 2016-02-05)
    The spatiotemporal temperature variability for several gridded instrumental and general circulation climate model data is characterized, contrasting power spectra of local and global temperatures, land and sea temperatures, ...
  • Early-warning signals for the onsets of Greenland interstadials and the younger dryas-preboreal transition 

    Rypdal, Martin wibe (Journal article; Tidsskriftartikkel; Peer reviewed, 2016-05-20)
    The climate system approaches a tipping point if the prevailing climate state loses stability, making a transition to a different state possible. A result from the theory of randomly driven dynamical systems is that the ...
  • On Data-Independent Properties for Density-Based Dissimilarity Measures in Hybrid Clustering 

    Møllersen, Kajsa; Dhar, Subhra; Godtliebsen, Fred (Journal article; Tidsskriftartikkel; Peer reviewed, 2016-09-12)
    Hybrid clustering combines partitional and hierarchical clustering for computational effectiveness and versatility in cluster shape. In such clustering, a dissimilarity measure plays a crucial role in the hierarchical ...
  • Are there multiple scaling regimes in Holocene temperature records? 

    Nilsen, Tine; Rypdal, Kristoffer; Fredriksen, Hege-Beate (Journal article; Tidsskriftartikkel; Peer reviewed, 2016-04-28)
    In this article it is discussed how temperature variability on centennial timescales and longer can be described in a simplistic way. By analysing the scaling in late Holocene temperature reconstructions and longer temperature ...
  • Comment on "Scaling regimes and linear/nonlinear responses of last millennium climate to volcanic and solar forcing" by S. Lovejoy and C. Varotsos (2016) 

    Rypdal, Kristoffer; Rypdal, Martin Wibe (Journal article; Tidsskriftartikkel; Peer reviewed, 2016-07-13)
    Lovejoy and Varotsos (2016) (L&V) analyse the temperature response to solar, volcanic, and solar plus volcanic forcing in the Zebiak–Cane (ZC) model, and to solar and solar plus volcanic forcing in the Goddard Institute ...
  • Late Quaternary temperature variability described as abrupt transitions on a 1/f noise background 

    Rypdal, Kristoffer; Rypdal, Martin Wibe (Journal article; Tidsskriftartikkel; Peer reviewed, 2016-03-31)
    In order to have a scaling description of the climate system that is not inherently non-stationary, the rapid shifts between stadials and interstadials during the last glaciation (the Dansgaard-Oeschger events) cannot be ...

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