Browsing NTNU Open by Title
Now showing items 37285-37304 of 100934
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Frequency of risk factors and long-term complications in a female population with previously diagnosed diabetes mellitus in rural Nepal
(Master thesis, 2017)Background: Diabetes mellitus (DM) is a noncommunicable disease causing 1.5 million deaths annually in 2012. Its global prevalence is growing dramatically, projecting to 10.4% of the adult population in 2040. Almost 75% ... -
Frequency Response of Reflector Arrays
(Master thesis, 2008)This report will investigate the frequency response of reflector arrays. Reflector arrays have two independent cut-off frequencies. One is caused by diffraction from the whole array, another is caused by diffraction from ... -
Frequency Response Presentation of Power System Components
(Master thesis, 2015)This master thesis presents a method for stability analysis. The dynamics of an electric system are described through frequency dependent impedances and admittances. This is presented with the basis of an electric traction ... -
Frequency support by wave farms in low inertia power systems
(Peer reviewed; Journal article, 2023)New ancillary services and additional requirements for the grid integration of variable renewable energy (VRE) are being defined worldwide, in response to the technical challenges caused by increasing levels of VRE utilization ... -
Frequency-Adaptive Energy Control for Grid-Forming MMCs Under Unbalanced Conditions
(Peer reviewed; Journal article, 2023)This paper presents a frequency-adaptive energy control strategy for a Modular Multilevel Converter (MMC) which is suitable for grid-forming operation under unbalanced conditions. The average components of the energy sum ... -
Frequency-Dependent Aerodynamic Damping and Inertia in Linearized Dynamic Analysis of Floating Wind Turbines
(Journal article; Peer reviewed, 2020)In frequency-domain (FD) models of floating wind turbines (FWT), it is common to regard the interaction between nacelle motions and thrust by means of a constant aerodynamic damping coefficient. This approach is effective ... -
Frequency-dependent cable modelling for small-signal stability analysis of VSC-HVDC systems
(Journal article; Peer reviewed, 2016)State-of-the-art time-domain models of power cables account for the frequency dependency of physical parameters to enable accurate transient simulations of high-voltage transmission schemes. Owing to their formulation, ... -
Frequency-dependent deficits in head steadiness in patients with nonspecific neck pain
(Journal article; Peer reviewed, 2019)Motor control impairments are reported in patients with nonspecific neck pain but the particular deficits in underlying regulatory systems are not known. Head steadiness is controlled both by voluntary and reflex systems ... -
Frequency-dependent modulation of cerebellar excitability during the application of non-invasive alternating current stimulation
(Peer reviewed; Journal article, 2020)Background it is well-known that the cerebellum is critical for the integrity of motor and cognitive actions. Applying non-invasive brain stimulation techniques over this region results in neurophysiological and behavioural ... -
Frequency-dependent source and load impedances in power systems based on power electronic converters
(Chapter, 2016)Representations of power systems by frequency dependent impedance equivalents is an emerging technique in dynamic analyses of power systems including power electronic converters. The technique has been applied for decades ... -
Frequency-dependent wave velocities in sediments and sedimentary rocks
(Doctoral theses at NTNU;2022:52, Doctoral thesis, 2022) -
Frequency-dependent wave velocities in sediments and sedimentary rocks: Laboratory measurements and evidences
(Journal article; Peer reviewed, 2016)The pioneering work of Mike Batzle and his colleagues has provided a fundamental understanding of mechanisms behind dispersion and attenuation of elastic waves in fluid-saturated rocks. It also has made way for a realization ... -
Frequency-depth-dependent spherical reflection response from the sea surface - a transmission experiment
(Journal article; Peer reviewed, 2018)In academia and the industry, there is an increasing interest in generating and recording low seismic frequencies, which lead to better data quality, deeper signal penetration and can be important for full-waveform inversion. ... -
Frequency-domain Method for Global Dynamic Response Analysis of a Semi-submersible Floating Wind Turbine
(Master thesis, 2018)The wind energy market is increasing. Developing offshore wind turbines has several advantages. Conventional time-domain methods in global dynamic response analysis are time-consuming. Inspired by this, the frequency-domain ... -
Frequency-domain Roll Motion Analysis of a Transportation Barge Using Stochastic Linearization of Viscous Roll Damping
(Master thesis, 2018)This thesis is proposed by DNV GL, and presents a comparative study of frequency-domain and time-domain analysis of the roll motion. The goal is to perform a roll motion analysis of a barge-cargo system considering linearized ... -
FREQUENT BOAT ACCIDENTS ON THE VOLTA LAKE OF GHANA: A Case Study of Tapa Abotoase in the Jasikan District of the Volta Region
(Master thesis, 2008)Boat accidents have become a matter of public concern during recent times as a result of its frequency in recording high fatalities on the Volta Lake of Ghana. This study sought to find out the main causes of this frequent ... -
Fresh and frozen stored fillets of Atlantic mackerel (Scomber scombrus)– effect on oxidation and sensory quality of canned mackerel fillets
(Chapter, 2016)Atlantic mackerel caught off the West Coast of Norway were filleted and frozen in 20 kg blocks at landing. The fillets were canned with tomato sauce when fresh and after 1, 3, 6, 9 and 12 months of frozen storage. The ... -
“Freshman’s week”: characteristics associated with participation and experiencing adverse effects
(Journal article; Peer reviewed, 2018)Background “Freshman’s week” (FW) is a Norwegian initiation ritual to higher education. Previous research has suggested that FW-participation is associated with better social adjustment to the student setting, as well as ... -
Freshwater Fish Community Responses to Climate Change and Invasive Species
(Doctoral theses at NTNU;2021:27, Doctoral thesis, 2021)Despite making up only a tiny proportion of the world’s aquatic surface area, freshwater ecosystems are home to a plethora of biodiversity, containing roughly 40% of all described fish species. Yet they’re also among the ... -
Freshwater plastispheres as a vector for foodborne bacteria and viruses
(Peer reviewed; Journal article, 2023)There is growing evidence that plastic particles can accumulate microorganisms that are pathogenic to humans or animals. In the current study, the composition of the plastispheres that accumulated on polypropylene (PP), ...