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Comparing Metrics for Scenario-based Robustness Assessment of Building Performance
(2021)Journal of Physics: Conference SeriesReaching Swiss greenhouse gas emission reduction goals for the building sector requires effective renovation strategies [1]. Due to the energy performance gap (EPG), the building stock might not be decarbonised as expected [2]. Uncertain boundary conditions such as occupant behaviour, climatic conditions, and characteristics of energy system components lead to inaccurate predictions of operational emissions and decarbonization pathways. ...Conference Paper -
Sensor and Software Technologies for Lip Pressure Measurements in Trumpet and Cornet Playing - from Lab to Classroom
(2015)Proceedings of the 12th Int. Conference on Sound and Music Computing (SMC-15) Maynooth, Ireland, July 30, 31 & August 1, 2015Conference Paper -
Gaze and feet as additional input modalities for interacting with geospatial interfaces
(2016)ISPRS Annals of the Photogrammetry, Remote Sensing and Spatial Information SciencesGeographic Information Systems (GIS) are complex software environments and we often work with multiple tasks and multiple displays when we work with GIS. However, user input is still limited to mouse and keyboard in most workplace settings. In this project, we demonstrate how the use of gaze and feet as additional input modalities can overcome time-consuming and annoying mode switches between frequently performed tasks. In an iterative ...Conference Paper -
RF pulse flattening in the SwissFEL facility based on model-free iterative learning control
(2015)Proceedings of the 36th International Free Electron Laser Conference (FEL2014)This paper introduces an iterative approach to producing flat-topped radio frequency (RF) pulses for driving the pulsed linear accelerators in the Swiss free electron laser (SwissFEL). The method is based on model-free iterative learning control which iteratively updates the input pulse shape in order to generate the desired amplitude and phase pulses at the output of the RF system. The method has been successfully applied to the klystron ...Conference Paper -
Model-based klystron linearization in the SwissFEL test facility
(2015)Proceedings of the 36th International Free Electron Laser Conference (FEL2014)An automatic procedure is developed to provide the optimal operating point of a klystron. Since klystrons are non-linear with respect to the input amplitude, a model-based amplitude controller is introduced which uses the klystron characteristic curves to obtain the appropriate high voltage power supply setting and amplitude, such that the operating point is close to the saturation. An advantage of the proposed design is that the overall ...Conference Paper -
Multi-objective optimization of a power-to-hydrogen system for mobility via two-stage stochastic programming
(2021)Journal of Physics: Conference SeriesA systematic way for the optimal design of renewable-based hydrogen refuelling stations in the presence of uncertainty in the hydrogen demand is presented. A two-stage stochastic programming approach is used to simultaneously minimize the total annual cost and the CO2 footprint due to the electricity generation sources. The first-stage (design) variables correspond to the sizing of the devices, while the second-stage (operation) variables ...Conference Paper -
Drying of porous materials at pore scale using lattice Boltzmann and pore network models
(2021)Journal of Physics: Conference SeriesDrying at macroscale shows a first drying period with constant drying rate followed by second drying period showing a receding moisture front, phenomena that can be tailored upon need. In order to study the drying of materials, we present a new hybrid computational method, where the dynamics of the liquid-vapor interfaces is modelled by lattice Boltzmann modelling (LBM) in the two-phase pores, while the single-phase flow in the pores ...Conference Paper -
Parametric design of an additively manufactured building façade for bespoke response to solar radiation
(2021)Journal of Physics: Conference SeriesThe building construction industry is adapting Additive Manufacturing (AM) and robotic fabrication techniques to, among other efficiency and cost benefits, reduce the lifecycle Green House Gas (GHG) emissions of new buildings. This research aims to fabricate a low-GHG emission façade by encoding environmental performance using a combination of material selection, AM techniques, and bespoke geometry. This paper presents the design methodology, ...Conference Paper -
A benchmark study on the model-based estimation of the go-kart side-slip angle
(2021)Journal of Physics: Conference SeriesNowadays, the active safety systems that control the dynamics of passenger cars usually rely on real-time monitoring of vehicle side-slip angle (VSA). The VSA can’t be measured directly on the production vehicles since it requires the employment of high-end and expensive instrumentation. To realiably overcome the VSA estimation problem, different model-based techniques can be adopted. The aim of this work is to compare the performance of ...Conference Paper -
Moisture-induced deformations of wood and shape memory
(2021)Journal of Physics: Conference SeriesWood is known to swell substantially during moisture adsorption and shrink during desorption. These deformations may lead to wood damage in the form of cracking and disjoining of wooden components in e.g. floor or windows. Two swelling mechanisms may be distinguished: reversible swelling/shrinkage and moisture-induced shape memory effect. In the latter, wood is deformed in the wet state and afterward dried under maintained deformation, ...Conference Paper