Browsing Faculty of Mathematics and Natural Sciences by Title
Now showing items 2959-2978 of 9927
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Extending Whitney's extension theorem: nonlinear function spaces
(Journal article; Peer reviewed, 2021)We consider a global, nonlinear version of the Whitney extension problem for manifold-valued smooth functions on closed domains , with non-smooth boundary, in possibly non-compact manifolds. Assuming is a submanifold with ... -
Extension of the hard-sphere model for particle-flow simulations
(Journal article; Peer reviewed, 2020)Discrete element methods require appropriate models for particle-particle collisions. Usually, researchers use soft-sphere types of models where the collision dynamics is solved numerically. This makes the simulation ... -
Extensional inheritance and surface processes as controlling factors of mountain belt structure
(Peer reviewed; Journal article, 2014-12)Surface processes and inherited structures are widely regarded as factors that strongly influence the evolution of mountain belts. The first-order effects of these parameters have been studied extensively throughout the ... -
Extensions in graph normal form
(Journal article; Peer reviewed, 2022)Graph normal form, introduced earlier for propositional logic, is shown to be a normal form also for first-order logic. It allows to view syntax of theories as digraphs, while their semantics as kernels of these digraphs. ... -
An extensive common‐garden study with domesticated and wild Atlantic salmon in the wild reveals impact on smolt production and shifts in fitness traits
(Peer reviewed; Journal article, 2019-02-19)Interactions between domesticated escapees and wild conspecifics represent a threat to the genetic integrity and fitness of native populations. For Atlantic salmon, the recurrent presence of large numbers of domesticated ... -
Extensive intraspecies cryptic variation in an ancient embryonic gene regulatory network
(Peer reviewed; Journal article, 2019-08-15)Innovations in metazoan development arise from evolutionary modification of gene regulatory networks (GRNs). We report widespread cryptic variation in the requirement for two key regulatory inputs, SKN-1/Nrf2 and MOM-2/Wnt, ... -
Extent and Volume of Lava Flows Erupted at 9°50′N, East Pacific Rise in 2005–2006 From Autonomous Underwater Vehicle Surveys
(Journal article; Peer reviewed, 2022)Seafloor volcanic eruptions are difficult to directly observe due to lengthy eruption cycles and the remote location of mid-ocean ridges. Volcanic eruptions in 2005–2006 at 9°50′N on the East Pacific Rise have been well ... -
Extra Dimensions at Particle Colliders
(Doctoral thesis, 2004-11-05) -
Extra-pair mating and evolution of cooperative neighbourhoods
(Peer reviewed; Journal article, 2014-07-02)A striking but unexplained pattern in biology is the promiscuous mating behaviour in socially monogamous species. Although females commonly solicit extra-pair copulations, the adaptive reason has remained elusive. We use ... -
Extra-pair paternity explains cooperation in a bird species
(Journal article; Peer reviewed, 2022)In many social animals, females mate with multiple males, but the adaptive value of female extra-pair mating is not fully understood. Here, we tested whether male pied flycatchers (Ficedula hypoleuca) engaging in extra-pair ... -
Extracting Rules from Neural Networks with Partial Interpretations
(Journal article; Peer reviewed, 2022)We investigate the problem of extracting rules, expressed in Horn logic, from neural network models. Our work is based on the exact learning model, in which a learner interacts with a teacher (the neural network model) via ... -
Extracting single target information from a simple echo sounder mounted on a drifting fish aggregating device (FAD)
(Master thesis, 2015-06-29)Fish aggregating devices (FADs) are widely used by purse seiners in the tropical tuna fisheries. Many species of fish including juvenile tuna often associate with these FADS. There are global decline in tuna catch largely ... -
Extracting statistical parameters of extreme precipitation from a NWP model
(Peer reviewed; Journal article, 2009-11-25)Precipitation simulations on an 8×8 km grid using the PSU/NCAR Mesoscale Model MM5 are used to estimate the M5 and Ci statistical parameters in order to support the M5 map used for flood estimates by Icelandic engineers. ... -
Extraction of form factors from a four-dimensional angular analysis of ¯B→D∗ℓ−¯νℓ
(Journal article; Peer reviewed, 2019-08-30)An angular analysis of the decay ¯B→D∗ℓ−¯νℓ, ℓ∈{e,μ}, is reported using the full e+e−collision data set collected by the BABAR experiment at the Υ(4S) resonance. One B meson from the Υ(4S)→B¯B decay is fully reconstructed ... -
The extreme Arctic warm anomaly in November 2020
(Journal article; Peer reviewed, 2022)In November 2020, the eastern Arctic experienced an extensive extreme warm anomaly (i.e., the second strongest case since 1979), which was followed by extreme cold conditions over East Asia in early winter. The observed ... -
Extreme Event Statistics in Dst, SYM-H, and SMR Geomagnetic Indices
(Journal article; Peer reviewed, 2023)Extreme space weather events are rare, and quantifying their likelihood is challenging, often relying on geomagnetic indices obtained from ground-based magnetometer observations that span multiple solar cycles. The Dst ... -
Extreme precipitation in Central Norway. A case and climate study
(Master thesis, 2010-06-01)An extreme precipitation event occurred over Central Norway at the end of January to the beginning of February 2006. The heavy precipitation in addition to high temperatures lead to snow melt and increased run-off, which ... -
Extreme Precipitation in Nepal. Trends and Key Processes
(Doctoral thesis, 2018-03-21)Nepal is located at the rim of the Himalayas and houses the highest mountains of the world. Owing to the complex topography and a seasonal monsoon climate, Nepal experiences precipitation events of considerable intensity. ... -
Extreme wave runup on a steep coastal profile
(Journal article; Peer reviewed, 2020)It is shown that very steep coastal profiles can give rise to unexpectedly large wave events at the coast. We combine insight from exact solutions of a simplified mathematical model with photographs from observations at ...