Search results for "VDP::Teknologi: 500"

Increasing sample efficiency in deep reinforcement learning using generative environment modelling

2020

Gaussian Process Sensitivity Analysis for Oceanic Chlorophyll Estimation

2017

Source at https://doi.org/10.1109/JSTARS.2016.2641583. Gaussian process regression (GPR) has experienced tremendous success in biophysical parameter retrieval in the past years. The GPR provides a full posterior predictive distribution so one can derive mean and variance predictive estimates, i.e., point-wise predictions and associated confidence intervals. GPR typically uses translation invariant covariances that make the prediction function very flexible and nonlinear. This, however, makes the relative relevance of the input features hardly accessible, unlike in linear prediction models. In this paper, we introduce the sensitivity analysis of the GPR predictive mean and variance functions…

A Self-Contained Electro-Hydraulic Cylinder: Modeling, Control Design, Simulation and Experimental Validation

2018

Master's thesis Mechatronics MAS500 - University of Agder 2018 In the constant effort to improve the efficiency of hydraulic systems, the pressure drop over hydraulic valves has been one of the major obstacles. In the Self-Contained Electro-Hydraulic Cylinder, the directional valve and the hydraulic power unit have been replaced by a bi-directional axial piston pump and a Permanent Magnet Synchronous Motor. Actuation of the cylinder is performed by controlling the direction of rotation and the velocity of the motor. Originally the purpose of this project was to: "Design a proper control algorithm for an existing novel selfcontained electro-hydraulic cylinder, implement it on the main boom o…

Digitalization of the Accounting Industry : The influence of digitalization on the accountants’ role and their self-understanding. An exploratory stu…

2019

Master's thesis Business Administration BE501 - University of Agder 2019 The purpose of this master thesis is to examine the accountants’ perception of their roles and how digitalization influences them. This is an exploratory study of Norwegian accountants, where we have collected primary data from 13 accounting firms using semi-structured interviews. Our findings indicate there is a limited understanding of digitalization among the respondents, and most of the firms are in the early stage of digitalization meaning that they experience with how to make use of the new technical possibilities coming along with digitalization. There is a need for better technical skills that are essential to …

Standardisering av brokonstruksjoner for nasjonale hovedveier

2017

Masteroppgave bygg BYG500 - Universitetet i Agder 2017 Standardization is currently not being utilized much in the Norwegian road building industry compared to the rest of the construction industry and road construction abroad. To harvest the potential benefits, it is interesting to determine how to increase the use of standardization in road building. The aim of this master’s thesis is to determine how to make use of standardized concrete bridges for the construction of new national highways. To investigate this, the thesis has established knowledge on today’s situation and found dominant obstacles towards a more widespread use of standardized bridge solutions. The Norwegian Public Roads A…

Standardiserte konstruksjonselementer av fiberarmert polymer for vegbru : Design og dimensjonering av elementer for standardisering og bruk i vegbruer

2017

Masteroppgave bygg BYG500 - Universitetet i Agder 2017 This thesis is addressing the possibility for use of fiber reinforced polymers (FRP) in bridge constructions in Norway. The aim is to design an FRP section that can perform as both structural support and decking on the bridge, in a similar way as often is done with concrete. The advances of using FRP composites is that it is possible to make the bridge sections a lot lighter, and consequently possible to fabricate them in remote locations and transport them to the construction site. This will make the time necessary for construction on site a lot shorter in cases where old bridges need replacement. To make FRP-composite bridges economic…

Dimensjonering av slank balkong i Ultra-High Performance Fibre-Reinforced Concrete

2017

Masteroppgave bygg BYG500 - Universitetet i Agder 2017 As part of the fifth and final year in civil engineering at University of Agder, this master’s thesis has been composed. This report was written during the spring semester of 2017. The purpose of this thesis was to dimension a slim balcony in UHPFRC. Nor Element wanted to be able to produce slim balconies in their own production facilities. Nor Element is currently producing balconies, but these have thicker cross sections. This master’s thesis involves a literature study and a dimension process. In the literature study the relevant guidelines and Eurocodes are presented. The study contains relevant formulas and recommendations needed t…

Rehabilitering av antikvarisk betongkonstruksjon fra perioden 1926-1938 : Vurdering av rehabiliteringstiltak og restkapasitet for Ingierstrand bad, b…

2017

Masteroppgave bygg BYG500 - Universitetet i Agder 2017 Traditionally restoration of antiquarian concrete constructions has been a prominent topic in Norwegian context. This topic has been given more attention, as more concrete constructions and reinforced concrete constructions have been preserved. In this thesis a case-study were done of Ingierstrand bad. A central part of the restoration of antiquarian concrete constructions is to control the capacity of the concrete against occurring stresses. We have in this thesis theoretically controlled the capacity of the standard being used during projecting and building, and that of today’s standard. We suggested the actions of restoration we thin…

Brannmotstanden til fiberkompositter etter slagskade : Numerisk analyse med beregning for å se endringen i kapasitet til fiberarmerte kompositter und…

2017

Masteroppgave bygg BYG500 - Universitetet i Agder 2017 Fiber reinforced composites have many good properties, but also many applications that make it vulnerable to accidental loads, like impact damage and fire. The problem with this is that minor and larger damage can be difficult to observe and a challenge to inspect on the spot. All materials exposed to fire, or high temperatures will expand, which can cause instability and large deformations. Several studies have examined the behavior of composites under these typical accidental loads individually, but none or very few have investigated when they occur simultaneously or the overall effect they provide. To address the problem in this thes…

Samvirkekonstruksjoner av stål og betong i boligbygg : Dimensjonering og modellering med hensyn til preakseptering, Eurokode 4 og numerisk analyse

2021

Master's thesis in Civil and structural engineering (BYG508) Interaction between steel and concrete, and its effect on moment capacity and flexural stiffness was investigated through the subject BYG507 - Preliminary Project to the Masters Thesis. As a continuation of the preliminary project, this report aims to establish an increased understanding of composite structures, with regards to capacity, modelling and current use. Based on regulations given in Eurocode 4, both pre-accepted and non-pre-accepted composite solutions are considered. The non-pre-accepted solution is based on an actual project; Kanalen Brygge in Tønsberg. This report is based on literature study, calculations and numeri…