Blar i Institutt for elektro, IT, og kybernetikk på forfatter "Skeie, Nils-Olav"
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A review of Smart House Analysis Methods for Assisting Older People Living Alone
Sanchez, Veralia Gabriela; Pfeiffer, Carlos Fernando; Skeie, Nils-Olav (Journal article; Peer reviewed, 2017) -
Analysing uncertainty in parameter estimation and prediction for grey-box building thermal behaviour models
Brastein, O.M.; Ghaderi, Ali; Pfeiffer, Carlos; Skeie, Nils-Olav (Peer reviewed; Journal article, 2020)The potential reduction in energy consumption for space heating in buildings realised by the use of predictive control systems directly depends on the prediction accuracy of the building thermal behaviour model. Hence, ... -
Comparison of space heating energy consumption of residential buildings based on traditional and model-based techniques
Perera, Degurunnehalage Wathsala U.; Skeie, Nils-Olav (Journal article; Peer reviewed, 2017) -
Control of temperature and energy consumption in buildings - a review.
Pfeiffer, Carlos Fernando; Skeie, Nils-Olav; Perera, Degurunnehalage Wathsala U. (Journal article; Peer reviewed, 2014)Building sector is one of the largest energy consumers in the world and currently it utilizes 40% of the total energy in the European Union. At the beginning of the article, energy crisis related to the buildings is defined ... -
Decision Trees for Human Activity Recognition in Smart House Environments
Sanchez, Veralia Gabriela; Skeie, Nils-Olav (Journal article; Peer reviewed, 2018)Human activity recognition in smart house environments is the task of automatic recognition of physical activities of a person to build a safe environment for older adults or any person in their daily life. The aim of this ... -
Detecting emergence in engineered systems: A literature review and synthesis approach
Haugen, Rune Andre; Skeie, Nils-Olav; Muller, Gerrit; Syverud, Elisabet (Peer reviewed; Journal article, 2023)Modern product development often generates systems of high complexity that are prone to emergent behavior. The industry has a need to establish better practices to detect inherent emergent behavior when engineering such ... -
Detecting emergence in engineered systems: A literature review and synthesis approach
Haugen, Rune Andre; Skeie, Nils-Olav; Muller, Gerrit; Syverud, Elisabet (Peer reviewed; Journal article, 2023)Modern product development often generates systems of high complexity that are prone to emergent behavior. The industry has a need to establish better practices to detect inherent emergent behavior when engineering such ... -
Estimating uncertainty of model parameters obtained using numerical optimisation
Brastein, Ole Magnus; Lie, Bernt; Pfeiffer, Carlos Fernando; Skeie, Nils-Olav (Peer reviewed; Journal article, 2019)Obtaining accurate models that can predict the behaviour of dynamic systems is important for a variety of applications. Often, models contain parameters that are difficult to calculate from system descriptions. Hence, ... -
Estimation of gas/liquid and oil/water interface levels in an oil/water/gas separator based on pressure measurements and regression modelling
Arvoh, Benjamin Kaku; Skeie, Nils-Olav; Halstensen, Maths (Journal article; Peer reviewed, 2013-02-08)Gravity separators are widely used for separation of gas/oil/water/sand from both offshore and onshore oil production facilities. Estimation of the gas/liquid and oil/water interface levels in gravity separators have been ... -
Estimation of the heating time of small-scale buildings using dynamic models
Perera, Degurunnehalage Wathsala U.; Skeie, Nils-Olav (Journal article; Peer reviewed, 2016)Most buildings are not continuously occupied, such as office buildings, schools, churches and many residential buildings. Maintaining comfortable conditions only during the occupied periods reduces the energy costs. This ... -
Flood Control of Lake Toke: Model Development and Model Fitting
Kvam, Kristian D.; Furenes, Beathe; Hasaa, Åsmund; Gjerseth, Alexander Zhang; Skeie, Nils-Olav; Lie, Bernt (Journal article; Peer reviewed, 2017) -
Human behaviour modelling for welfare technology using hidden Markov models
Sanchez, Veralia Gabriela; Lysaker, Ola Marius; Skeie, Nils-Olav (Peer reviewed; Journal article, 2019)Human behaviour modelling for welfare technology is the task of recognizing a person's behaviour patterns in order to construct a safe environment for that person. It is useful in building environments for older adults or ... -
Modeling and Simulation of A Multi-Zone Building for Better Control
Perera, Degurunnehalage Wathsala U.; Pfeiffer, Carlos Fernando; Skeie, Nils-Olav (Journal article; Peer reviewed, 2014-12-09)Buildings are one of the largest energy consumers in most of the countries. Building sector in the European Union (EU) is continuously expanding and currently utilizes 40% of total energy consumption in the union. Out of ... -
Modeling and Simulation of Multi-Room Buildings
Perera, Degurunnehalage Wathsala U.; Skeie, Nils-Olav (Journal article; Peer reviewed, 2016)Buildings are one of the largest energy consumers in the world which accounts for nearly 40% of the total global energy consumption. In the countries where cold climate conditions predominate, space heating is the key ... -
Modelling the heat dynamics of a residential building unit: Application to Norwegian buildings.
Perera, Degurunnehalage Wathsala U.; Pfeiffer, Carlos Fernando; Skeie, Nils-Olav (Journal article; Peer reviewed, 2014)The paper refers to the development of a continuous time mathematical heating model for a building unit based on the rst principles. The model is described in terms of the state space variables, and a lumped parameter ... -
Models for control of thermal energy in buildings
Johansen, Casper Amandus; Lie, Bernt; Skeie, Nils-Olav (Peer reviewed; Journal article, 2019)A large fraction of the world’s energy production is used for HVAC in buildings. It is therefore important to develop improved strategies for ef?cient use of energy in buildings. Storage of intermittent energy production ... -
Parameter estimation for externally simulated thermal network models
Brastein, Ole Magnus; Lie, Bernt; Sharma, Roshan; Skeie, Nils-Olav (Peer reviewed; Journal article, 2019)Obtaining accurate dynamic models of building thermal behaviour requires a statistically solid foundation for estimating unknown parameters. This is especially important for thermal network grey-box models, since all their ... -
Parameter estimation for grey-box models of building thermal behaviour
Brastein, Ole Magnus; Perera, Degurunnehalage Wathsala U.; Pfeiffer, Carlos Fernando; Skeie, Nils-Olav (Journal article; Peer reviewed, 2018)Good models for building thermal behaviour are an important part of developing building energy management systems that are capable of reducing energy consumption for space heating through model predictive control. A popular ... -
Selection methodology of energy consumption model based on data envelopment analysis.
Nakhodov, Vladimir; Baskys, Algirdas; Skeie, Nils-Olav; Pfeiffer, Carlos Fernando; Dmytro, Ivanko (Journal article; Peer reviewed, 2017)The energy efficiency monitoring methods in industry are based on statistical modeling of energy consumption. In the present paper, the widely used method of energy efficiency monitoring “Monitoring and Targeting systems” ... -
Sensor placement and parameter identifiability in grey-box models of building thermal behaviour
Brastein, Ole Magnus; Sharma, Roshan; Skeie, Nils-Olav (Journal article; Peer reviewed, 2019)Building energy management systems can reduce energy consumption for space heating in existing buildings, by utilising Model Predictive Control. In such applications, good models of building thermal behaviour is important. ...