Blar i Faculty of Mathematics and Natural Sciences på tittel

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    • Etablering av holocen askestratigrafi i innsjøarkiver for Vest-Norge 

      Bendiksen, Ann-Elin Rødskar (Master thesis, 2020-07-04)
      Askestratigrafi er et mye brukt verktøy til kronostratigrafisk korrelering og datering. For vest-norske innsjøer er det tefrakronologiske rammeverket svært begrenset, og en etablering av en askestratigrafi derfra kan gi ...

    • ETH Tight Algorithms for Geometric Intersection Graphs: Now in Polynomial Space 

      Fomin, Fedor; Golovach, Petr; Inamdar, Tanmay Nitin; Saurabh, Saket (Journal article; Peer reviewed, 2021)
      De Berg et al. in [SICOMP 2020] gave an algorithmic framework for subexponential algorithms on geometric graphs with tight (up to ETH) running times. This framework is based on dynamic programming on graphs of weighted ...

    • ETH-Tight Algorithms for Finding Surfaces in Simplicial Complexes of Bounded Treewidth 

      Black, Mitchell; Blaser, Nello; Nayyeri, Amir; Vågset, Erlend Raa (Journal article; Peer reviewed, 2022)
      Given a simplicial complex with n simplices, we consider the Connected Subsurface Recognition (c-SR) problem of finding a subcomplex that is homeomorphic to a given connected surface with a fixed boundary. We also study ...

    • ETH-tight algorithms for long path and cycle on unit disk graphs 

      Fomin, Fedor; Lokshtanov, Daniel; Panolan, Fahad; Saurabh, Saket; Zehavi, Meirav (Journal article; Peer reviewed, 2020)
      We present an algorithm for the extensively studied Long Path and Long Cycle problems on unit disk graphs that runs in time 2O(√k)(n + m). Under the Exponential Time Hypothesis, Long Path and Long Cycle on unit disk graphs ...

    • Ethernet-Based Control System and Data Readout for a Proton Computed Tomography Prototype 

      Bohne, Karl Emil Sandvik (Master thesis, 2018-06-23)
      At the University of Bergen (UiB), work is underway to develop a proton based computed tomography prototype. Proton CT (pCT) is an alternative to photonbased imaging that shows great promise as a technology for use in ...

    • Ethylene-Triggered Formation of Ruthenium Alkylidene from Decomposed Catalyst 

      Smit, Wietse; Foscato, Marco; Occhipinti, Giovanni; Jensen, Vidar Remi (Journal article; Peer reviewed, 2020)
      Ethylene is known to readily decompose ruthenium-based olefin metathesis catalysts, such as Grubbs second-generation catalyst (GII), by forming the unsubstituted ruthenacyclobutane (Ru-2) that may undergo a 1,2-H shift and ...

    • etrm: Energy Trading and Risk Management in R 

      Sleire, Anders Daasvand (Journal article; Peer reviewed, 2022)
      This paper introduces etrm, an R package with tools for trading and financial risk management in energy markets. Contracts for electric power and natural gas differ from most other commodities due to the fact that physical ...

    • Eulerian CFD model of direct absorption solar collector with nanofluid 

      Bårdsgård, Runa By; Kuzmenkov, Dmitriy M.; Kosinski, Pawel Jan; Balakin, Boris (Journal article; Peer reviewed, 2020)
      Solar energy is the most promising source of renewable energy. However, the solar energy harvesting process has relatively low efficiency, while the practical use of solar energy is challenging. Direct absorption solar ...

    • Eulerian CFD Model of Direct Absorption Solar Collector with Nanofluid 

      Bårdsgård, Runa By (Master thesis, 2019-12-13)
      Solar energy is the most promising source of renewable energy. However, the solar energy harvesting process has relatively low efficiency, while the use of solar energy is challenging. Direct Absorption Solar Collectors ...

    • Eurasian Cooling Linked to the Vertical Distribution of Arctic Warming 

      He, Shengping; Xu, Xinping; Furevik, Tore; Gao, Yongqi (Journal article; Peer reviewed, 2020)
      Observations show that deep Arctic winter warming, extending from surface to mid‐troposphere, has concurred with below‐average temperature over central Eurasia. Modeling studies focusing on the response to Arctic sea ice ...

    • Eurasian Ice Sheet collapse was a major source of Meltwater Pulse 1A 14,600 years ago 

      Brendryen, Jo; Haflidason, Haflidi; Yokoyama, Yusuke; Haaga, Kristian Agasøster; Hannisdal, Bjarte (Journal article; Peer reviewed, 2020)
      Rapid sea-level rise caused by the collapse of large ice sheets is a threat to human societies. In the last deglacial period, the rate of global sea-level rise peaked at more than 4 cm yr−1 during Meltwater Pulse 1A, which ...

    • The European Climate Research Alliance (ECRA): Collaboration from bottom-up 

      Hoke, Winfried; Swierczynski, Tina; Braesicke, Peter; Lochte, Karin; Shaffrey, Len; Drews, Martin; Gregow, Hilppa; Ludwig, Ralf; Nilsen, Jan Even Øie; Palazzi, Elisa; Sannino, Gianmaria; Smedsrud, Lars H. (Peer reviewed; Journal article, 2019-01-17)
      The European Climate Research Alliance (ECRA) is an association of leading European research institutions in the field of climate research (http://www.ecra-climate.eu/, last access: 6 December 2018). ECRA is a bottom-up ...

    • The European Forest Plant Species List (EuForPlant): Concept and applications 

      Heinken, Thilo; Diekmann, Martin; Liira, Jaan; Orczewska, Anna; Schmidt, Marcus; Brunet, Jörg; Chytrý, Milan; Chabrerie, Olivier; Decocq, Guillaume; De Frenne, Pieter; Dřevojan, Pavel; Dzwonko, Zbigniew; Ewald, Jörg; Feilberg, Jon; Graae, Bente Jessen; Grytnes, John Arvid; Hermy, Martin; Kriebitzsch, Wolf-Ulrich; Laiviņš, Māris; Lenoir, Jonathan; Lindmo, Sigrid; Marage, Damien; Marozas, Vitas; Niemeyer, Thomas; Paal, Jaanus; Pyšek, Petr; Roosaluste, Elle; Sádlo, Jiří; Schaminée, Joop H.J.; Tyler, Torbjörn; Verheyen, Kris; Wulf, Monika; Vanneste, Thomas (Journal article; Peer reviewed, 2022)
      Question When evaluating forests in terms of their biodiversity, distinctiveness and naturalness, the affinity of the constituent species to forests is a crucial parameter. Here we ask to what extent are vascular plant ...

    • The European gravity field and steady-state ocean circulation explorer satellite mission: its impact on geophysics 

      Johannessen, Johnny A.; Balmino, G.; Le Provost, Christian; Rummel, R.; Sabadini, R.; Sünkel, H.; Tscherning, C. C.; Visser, P.; Woodworth, Philip; Hughes, C. W.; Le Grand, Pascal; Sneeuw, N.; Perosanz, F.; Aguirre-Martinez, M.; Rebhan, Helge; Drinkwater, M. R. (Journal article, 2003-07)
      Current knowledge of the Earth’s gravity field and its geoid, as derived from various observing techniques and sources, is incomplete. Within a reasonable time, substantial improvement will come by exploiting new approaches ...

    • European summer temperatures since Roman times 

      Luterbacher, Jürg; Werner, Johannes; Smerdon, Jason E.; Fernández-Donado, Laura; González-Rouco, Fidel J.; Barriopedro, David E.; Ljungqvist, Fredrik Carpentier; Büntgen, Ulf; Zorita, Eduardo Valera; Wagner, Sebastian; Esper, Jan; McCarroll, Danny; Toreti, Andrea; Frank, David C.; Jungclaus, Jojann H.; Barriendos, Mariano; Bertolin, Chiara; Bothe, Oliver; Brázdil, Rudolf; Camuffo, Dario; Dobrovolný, Petr; Gagen, Mary H.; Garcia-Bustamante, Elena; Ge, Q.; Guiot, Joël; Gómez-Navarro, Juan José; Hao, Z.; Hegerl, Gabi C.; Holmgren, Karin; Klimenko, Vladimir V.; Martin-Chivelet, Javier; Pfister, Christian; Roberts, Neil; Schindler, Anne; Schurer, Andrew P.; Solomina, Olga N.; Von Gunten, Lucien; Wahl, Eugene R.; Wanner, Heinz; Wetter, Oliver; Xoplaki, Elena; Yuan, Naiming; Zanchettin, Davide; Zhang, Huan; Zerefos, Christos S. (Journal article; Peer reviewed, 2016)
      The spatial context is critical when assessing present-day climate anomalies, attributing them to potential forcings and making statements regarding their frequency and severity in a long-term perspective. Recent international ...

    • European warm-season temperature and hydroclimate since 850 CE 

      Ljungqvist, Fredrik Charpentier; Seim, Andrea; Krusic, Paul J.; Gonzalez-Rouco, Jesus Fidel; Werner, Johannes; Cook, Edward R.; Zorita, Eduardo; Luterbacher, Jürg; Xoplaki, Elena; Destouni, Georgia; Garcia-Bustamante, Elena; Aguilar, Camilo Andres Melo; Seftigen, Kristina; Wang, Jianglin; Gagen, Mary H.; Esper, Jan; Solomina, Olga; Fleitmann, Dominik; Büntgen, Ulf (Journal article; Peer reviewed, 2019)
      The long-term relationship between temperature and hydroclimate has remained uncertain due to the short length of instrumental measurements and inconsistent results from climate model simulations. This lack of understanding ...

    • Evaluating balanced section restoration with thermochronology data: A case study from the Central Pyrenees 

      Erdős, Zoltán; van der Beek, Peter; Huismans, Ritske S. (Peer reviewed; Journal article, 2014-05-06)
      We present a new method that can be used to quantitatively evaluate the consistency between balanced section restorations and thermochronological data sets from orogenic belts. We have applied our method to a crustal-scale ...

    • Evaluating effort regulation in mixed fisheries: a Monte Carlo approach 

      Liu, Xiaozi; Heino, Mikko Petteri (Peer reviewed; Journal article, 2019)
      This paper evaluates whether effort regulation could achieve the goal of protecting low-abundance species in mixed fisheries. We construct a two-species bio-economic model and compare the stock abundance ratio in the end ...

    • Evaluating Impacts of Recent Arctic Sea Ice Loss on the Northern Hemisphere Winter Climate Change 

      Ogawa, Fumiaki; Keenlyside, Noel; Gao, Yongqi; Koenigk, Torben; Yang, Shuting; Suo, Lingling; Wang, Tao; Gastineau, Guillaume; Nakamura, Tetsu; Cheung, Ho Nam; Omrani, Nour-Eddine; Ukita, Jinro; Semenov, Vladimir (Journal article; Peer reviewed, 2018)
      Wide disagreement among individual modeling studies has contributed to a debate on the role of recent sea ice loss in the Arctic amplification of global warming and the Siberian wintertime cooling trend. We perform coordinated ...

    • Evaluating primary (cry1Ab) and secondary effects (deoxynivalenol) of GM maize when fed to zebrafish (Danio rerio). Investigating growth, intestinal mRNA and white blood cell differentiation 

      Jørgensen, Susanne (Master thesis, 2012-06-01)
      Several of the plants which are currently being used in fish feed in Norway today, are being genetically modified (GM) around the world. The use of GM plants is increasing worldwide, and whether these are safe to use in ...