Browsing NTNU Open by Title
Now showing items 82608-82627 of 101204
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Small-Group Instruction to Improve Student Performance in Mathematics in Early Grades: Results from a Randomized Field Experiment
(Journal article; Peer reviewed, 2022)We investigate whether small-group instruction improves student performance in mathematics in the early grades using a large-scale RCT covering 159 Norwegian schools over four years. The students − 7–9 years old - are ... -
Small-Group Instruction to Improve Student Performance in Mathematics in Early Grades: Results from a Randomized Field Experiment
(Peer reviewed; Journal article, 2022)We investigate whether small-group instruction improves student performance in mathematics in the early grades using a large-scale RCT covering 159 Norwegian schools over four years. The students − 7–9 years old - are ... -
Small-mammal abundance and species diversity: land use and seasonal influences in the Serengeti Ecosystem, Tanzania
(Peer reviewed; Journal article, 2023)Land use, habitat suitability, and seasonality can fundamentally shape small-mammal abundance, species richness, diversity, evenness, and composition. However, how these characteristics of small mammals are determined by ... -
Small-molecule inhibitor of OGG1 suppresses proinflammatory gene expression and inflammation
(Journal article; Peer reviewed, 2018)The onset of inflammation is associated with reactive oxygen species and oxidative damage to macromolecules like 7,8-dihydro-8-oxoguanine (8-oxoG) in DNA. Because 8-oxoguanine DNA glycosylase 1 (OGG1) binds 8-oxoG and ... -
Small-Scale 5G Testbeds for Network Slicing Deployment: A Systematic Review
(Peer reviewed; Journal article, 2021)Developing specialized cloud-based and open-source testbeds is a practical approach to investigate network slicing functionalities in the fifth-generation (5G) mobile networks. This paper provides a comprehensive review ... -
Small-Scale Automation in Shipbuilding - An Investment Study for Automated Hull Production in High-cost Countries
(Master thesis, 2015)The globalized market enforces a great cost pressure on all the shipbuilding actors. Norwegian yards, representing countries with high local wages and prices, is under pressure to make changes if they want to keep up with ... -
SMALL-SCALE FRACTURE AND ARREST TESTING OF IRON AT LOW TEMPERATURES
(Doctoral theses at NTNU;2018:244, Doctoral thesis, 2018)The industrial activity in the Arctic is expanding. An ever-increasing demand for energy is forcing the production of oil further north, where accidents may have severe ecological ramifications. Rough climate conditions ... -
Small-Scale Mechanical Testing of Single Crystal Fe at Low Temperatures
(Doctoral theses at NTNU;2018:60, Doctoral thesis, 2018)Nowadays, the increasing exploration and production in the Arctic region poses an urgent challenge to the mechanical properties of materials. The lack of knowledge of the “cold-brittleness” raises the need to better ... -
Small-scale model for pile drilling under realistic stress conditions
(Master thesis, 2020)Boring med kontinuerlig foringsrør kan potensielt være en skånsom metode for å installere peler i områder med tynne jordsjikt over grunnfjell. Hvis det blir utført med bruk av riktig teknikk og installasjonsparametere har ... -
Small-Scale Plasticity under Hydrogen Environment
(Doctoral theses at NTNU;2017:356, Doctoral thesis, 2017) -
Small-Scale Stone Quarrying: Its Contribution to People's Livelihoods.: A Case Study Kasenge Parish, Nama Sub-County, Mukono District (Uganda)
(Master thesis, 2006)With majority of the world’s poor living in rural areas and engaging in agriculture governments and NGOs have taken measures to promote agricultural activities so as to alleviate poverty. Uganda’s Poverty Eradication Action ... -
Small-signal model analysis of droop-controlled modular multilevel converters with circulating current suppressing controller
(Chapter, 2017)This paper presents a small signal eigenvalue analysis applied to a droop-controlled HVDC terminal based on the Modular Multilevel Converter (MMC) topology. The applied linearised model is derived from previous modelling ... -
Small-signal modeling and parametric sensitivity of a virtual synchronous machine in islanded operation
(Peer reviewed; Journal article, 2015)The concept of Virtual Synchronous Machines (VSMs) is emerging as a flexible approach for controlling power electronic converters in grid-connected as well as in stand-alone or microgrid applications. Several VSM implementations ... -
Small-signal modelling and stability analysis of a traditional generation unit and a virtual synchronous machine in grid-connected operation
(Master thesis, 2015)In this work, previous small-signal modelling and analysis carried out for a VSM implementation has been adapted and expanded to include a synchronous machine (SM) with a control scheme similar to those of traditional ... -
A small-signal multi-frequency model for a grid-connected inverter with a more accurate PWM gain
(Peer reviewed; Journal article, 2020)It is a well known fact that pulse width modulation (PWM) produces sideband effects. Taking this point into account, the accuracy of the grid-connected inverter model can be improved. In this paper, considering the aliasing ... -
Small-Signal Stability Analysis of GridVille's Microgrid
(Master thesis, 2022)Denne oppgaven har som mål å analysere mikronettet til GridVille, en studentorganisasjon som skal bygge et micronett for en landsby i Nepal, for å comme med praktiske forslag til hvordan å forbedre stabiliteten i energisystemet. ... -
Small-signal Stability Characterization of Interaction Phenomena between HVDC System and Wind Farms
(Doctoral theses at NTNU;2017:210, Doctoral thesis, 2017)The main objectives of this research work are to determine the underlying mechanisms leading to instability in a system with dominant presence of tightly regulated power electronics components and to identify the causal ... -
Small-Signal Stability Enhancement by Wide-Area Damping Control Using a Battery Energy Storage System Emphasizing Selection of Device Location and Controller Input Signal
(Master thesis, 2021)Kraftsystemer over hele verden blir i mer fremtredende grad koblet sammen. I tillegg til en større andel fornybare generasjonskilder, forårsaker dette stabilitet- sproblemer i nettene. Mengden oscillatoriske svingninger ... -
Small-Signal State-Space Analysis of Inductive Battery Charging System in Off-Resonant Operation
(Chapter, 2019)This paper analyses the small-signal dynamics of a series-series compensated inductive charging system with a passive diode rectifier interfaced directly to a battery on the receiving side. The analyzed system is designed ... -
[SmallSat] FPGA Implementation of PCA Dimensionality Reduction Technique
(Master thesis, 2018)The aim of the thesis is to develop an efficient hardware implementation of the PCA (Principal Component Analysis) algorithm for dimensionality reduction in hyperspectral imaging. PCA includes the calculation stages as ...