Munin: Recent submissions
Now showing items 15201-15220 of 36288
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Investigation of Polar Mesospheric Summer Echoes Using Linear Discriminant Analysis
(Journal article; Tidsskriftartikkel; Peer reviewed, 2021-02-02)Polar Mesospheric Summer Echoes (PMSE) are distinct radar echoes from the Earth’s upper atmosphere between 80 to 90 km altitude that form in layers typically extending only a few km in altitude and often with a wavy structure. The structure is linked to the formation process, which at present is not yet fully understood. Image analysis of PMSE data can help carry out systematic studies to characterize ... -
Innovating carbon-capture biotechnologies through ecosystem-inspired solutions
(Journal article; Tidsskriftartikkel; Peer reviewed, 2021-01-22)Rising atmospheric carbon concentrations affect global health, the economy, and overall quality of life. We are fast approaching climate tipping points that must be addressed, not only by reducing emissions but also through new innovation and action toward carbon capture for sequestration and utilization (CCSU). In this perspective, we delineate next-generation biotechnologies for CCSU supported by ... -
Solving a Real-World Urban Postal Service Network Redesign Problem
(Journal article; Tidsskriftartikkel; Peer reviewed, 2021-05-28)Due to recent technological advancements, more diversified customer demand, and increasingly harder competition, traditional postal service systems have experienced significant changes all over the world. In Norway, through a strategic reform called post-in-shop, undertaken in 2013, most postal services are now provided at postal service counters located in retailer stores in order to improve ... -
Introduction: Multilingual encounters in Northern Norway
(Journal article; Tidsskriftartikkel; Peer reviewed, 2021-05-03)Norway has always been a multilingual society; Sámi languages have been spoken in vast geographical areas since prehistoric times, the Kven and other historical minority groups settled in the country, the Norwegian language has a great variety of dialects and the long coastline has eased mobility and enabled multiple multilingual encounters lasting short or long periods of time. In recent years, ... -
Moderate-to-vigorous physical activity modifies the relationship between sedentary time and sarcopenia: the Tromsø Study 2015–2016
(Journal article; Tidsskriftartikkel; Peer reviewed, 2021-06-01)<p>Background: Sarcopenia is an age-related muscle disease primarily characterized by reductions in muscle strength that increases the risk of falls, fractures, cognitive impairment, and mortality. Exercise is currently preferred in prevention and treatment, but it is unknown how different habitual physical activity and sedentary behaviour patterns associate with sarcopenia status. The purpose of ... -
An AIS-based deep learning framework for regional ship behavior prediction
(Journal article; Tidsskriftartikkel; Peer reviewed, 2021-05-27)This study presents a deep learning framework to support regional ship behavior prediction using historical AIS data. The framework is meant to aid in proactive collision avoidance, in order to enhance the safety of maritime transportation systems. In this study, it is suggested to decompose the historical ship behavior in a given geographical region into clusters. Each cluster will contain trajectories ... -
Cryptic β-Lactamase Evolution Is Driven by Low β-Lactam Concentrations
(Journal article; Tidsskriftartikkel; Peer reviewed, 2021-04-28)Our current understanding of how low antibiotic concentrations shape the evolution of contemporary β-lactamases is limited. Using the widespread carbapenemase OXA-48, we tested the long-standing hypothesis that selective compartments with low antibiotic concentrations cause standing genetic diversity that could act as a gateway to developing clinical resistance. Here, we subjected <i>Escherichia ... -
Scavenger endothelial cells of fish, a review
(Journal article; Tidsskriftartikkel; Peer reviewed, 2021-05-17)The definition of scavenger endothelial cells (SEC) is exclusively based on functional and structural characteristics. The following characteristics are common hallmarks for the vertebrate SEC: (a) All vertebrates examined are furnished with a population of special SEC that plays a role in the catabolism of physiologic and non-physiologic soluble waste macromolecules. (b) From the ligands that are ... -
Meaning making in a sixth-grade mathematics classroom through touch screen technology
(Journal article; Tidsskriftartikkel; Peer reviewed, 2021-05-05)This paper presents a case study of two sixth-grade students’ use of an iPad as an instructional tool for mathematics. Based on their written and oral responses, we investigated and analyzed their meaning making process with mathematical content in a classroom where the iPad was a central tool for teaching practices. The analyses were based on Steinbring’s [(2005). The construction of new mathematical ... -
Within and between breeding-season changes in contaminant occurrence and body condition in the Antarctic breeding south polar skua
(Journal article; Tidsskriftartikkel; Peer reviewed, 2021-05-24)The Antarctic ecosystem represents a remote region far from point sources of pollution. Still, Antarctic marine predators, such as seabirds, are exposed to organohalogen contaminants (OHCs) which may induce adverse health effects. With increasing restrictions and regulations on OHCs, the levels and exposure are expected to decrease over time. We studied south polar skua (<i>Catharacta maccormicki</i>), ... -
Real Plane Algebraic Curves
(Master thesis; Mastergradsoppgave, 2021-06-18)This master thesis studies several properties of real plane algebraic curves, focusing on the case of even degree. The question of the relative positions of the connected components of real plane algebraic curves originates in Hilbert's sixteenth problem which, despite its prominence, is still open in the case of higher degree curves. The goal of this thesis is an exposition of fundamental ... -
geresskálla máđiid miel. Mo geresjohtima guorahallan váikkuhivččii vektordoahpaga ipmirdeapmái
(Master thesis; Mastergradsoppgave, 2021-05-28)Dán masterbarggu dutkangažaldat lea «Mo geresjohtima guorahallan matematihkkaoahpahusas váikkuhivččii vektordoahpaga ipmirdeapmái?». Vástidit dán lei dárbu vuos oahppat eanet geresjohtima birra, oainnusmahttit geresjohtima matematihkalaš jurddašeami ja gávnnahit mo dát vástidivččii vektoriidda. Dán dihte lei dárbu álggus guorahallat vuollegažaldagaid, mat leat «Mo leat geresjohtima kultuvrralaš, ... -
Trans-dimensional inference over Bayesian neural networks
(Master thesis; Mastergradsoppgave, 2021-06-03)Trans-dimensional Bayesian inference for multi-layer perceptron architectures of varying size by reversible jump Markov chain Monte Carlo is developed and examined for its theoretical and practical merits and considerations. The algorithm features the No-U-Turn Sampler and Hamiltonian Monte Carlo for within-dimension moves, and makes use of a delayed-rejection sampler while exploring a variety of ... -
Optimization of the use of PrepFiler Express™ Forensic DNA extraction kit lysis buffer discard for mRNA profiling
(Mastergradsoppgave; Master thesis, 2021-06-01)mRNA profiling for body fluid or tissue type identification is able to provide circumstantial information alongside DNA profiles from biological material found at a crime scene. To solve the challenge of material limitation in body fluid identification, studies have successfully developed mRNA profiles of RNA extracted from lysis buffer discard of DNA-extraction. It would be interesting to examine ... -
High Palmitate Alters Glutathione Redox During Severe Oxidant Stress in the Heart; An Evaluation of Altered Glutathione Redox Environment on Cardiac Function and Mitochondrial Energetics.
(Mastergradsoppgave; Master thesis, 2021-05-18)When the heart is under stress, e.g. ischemia-reperfusion (IR), it produces an enormous amount of reactive oxygen species (ROS). Glutathione, which is an endogenous antioxidant derived from the ‘nicotinamide adenine dinucleotide hydrogen’ (NADH) of the ‘tricarboxylic acid’ cycle, can fight against this oxidative stress to balance the redox environment, and convert the produced ROS to H2O. In this ... -
Symmetric Ideals
(Mastergradsoppgave; Master thesis, 2021-05-14)Polynomials appear in many different fields such as statistics, physics and optimization. However, when the degrees or the number of variables are high, it generally becomes quite difficult to solve polynomials or to optimize polynomial functions. An approach that can often be helpful to reduce the complexity of such problems is to study symmetries in the problems. A relatively new field, that has ... -
User involvement in adolescents’ mental healthcare: a systematic review
(Journal article; Tidsskriftartikkel; Peer reviewed, 2021-06-05)More than one out of ten adolescents suffer from mental illness at any given time. Still, there is limited knowledge about their involvement in mental healthcare. Adolescents have the right to be involved in decisions affecting their healthcare, but limited research focuses on their engagement and decision-making. Therefore, this systematic review aims to explore the existing experiences with, the ... -
Toward a resource poetics in Muriel Rukeyser’s Book of the Dead and Mark Nowak’s Coal Mountain Elementary
(Journal article; Tidsskriftartikkel; Peer reviewed, 2021-03-05)Muriel Rukeyser’s 1936 documentary poem <i>The Book of the Dead</i> appropriates various forms of textual evidence to document a devastating mining disaster that occurred in 1930 in rural Gauley Bridge, West Virginia. Written in the aftermath of the post-2008 financial crisis, Mark Nowak’s 2009 text <i>Coal Mountain Elementary</i> revisits the same landscape Rukeyser had sought out seventy years ... -
Total and cause‑specific mortality in patients with personality disorders: the association between comorbid severe mental illness and substance use disorders
(Journal article; Tidsskriftartikkel; Peer reviewed, 2021-03-07)<p>Purpose: To investigate the mortality in both in- and outpatients with personality disorders (PD), and to explore the association between mortality and comorbid substance use disorder (SUD) or severe mental illness (SMI). <p>Methods: All residents admitted to Norwegian in- and outpatient specialist health care services during 2009–2015 with a PD diagnosis were included. Standardized mortality ... -
Centennial relationships between ocean temperature and Atlantic puffin production reveal shifting decennial trends
(Journal article; Tidsskriftartikkel; Peer reviewed, 2021-05-24)The current warming of the oceans has been shown to have detrimental effects for a number of species. An understanding of the underlying mechanisms may be hampered by the non-linearity and non-stationarity of the relationships between temperature and demography, and by the insufficient length of available time series. Most demographic time series are too short to study the effects of climate on ...