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A Comparative Assessment of Mobile Device-Based Multi-Hazard Warnings: Saving Lives through Public Alerts in Europe
(2022)CSS Risk and Resilience ReportsWhile there are many different forms of public warning systems, the ones that use means of electronic communications services offer several advantages, such as increased reachability, as a large part of the population always has a mobile with them. This report identifies challenges for such multi-hazard warning apps and, based on this, makes several recommendations on how to overcome them.Report -
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What Makes Firms Stop Doing R&D in Switzerland? – Project Commissioned by SERI
(2022)KOF StudiesReport -
Force Computation for Dielectrics using Shape Calculus
(2022)SAM Research ReportWe are concerned with the numerical computation of electrostatic forces/torques in only piecewise homogeneous materials using the boundary element method (BEM). Conventional force formulas based on the Maxwell stress tensor yield functionals that fail to be continuous on natural trace spaces. Thus their use in conjunction with BEM incurs slow convergence and low accuracy. We employ the remedy discovered in {\sc P.~Panchal and R.~Hiptmair}, ...Report -
Modelling life cycle costs for edge beams of three Norwegian bridges
(2022)NPRA ReportsFor the planning of cost-effective infrastructure maintenance, it is important to assess the condition of structures and to estimate the optimum time, the extent and the type of repair needed to continue operating the structures safely. In this study, a novel approach is presented, which combines data from condition assessment of reinforced concrete structures (e.g. chloride profiles), predictive modelling (future chloride ingress) and ...Report -
Use of generalized lambda models for seismic fragility analysis
(2022)RSUQ-ReportSeismic structural performances are typically characterized by fragility models. A fragility model provides the probability of exceeding a certain level of damage in the structure given a set of intensity measures (IMs) of the seismic excitations. The damage level is defined as a function of a given Engineering Demand Parameter (EDP) (e.g., the maximal interstory drift for a multi-story building, the maximum lateral drift of piers for a ...Report -
Analyticity and sparsity in uncertainty quantification for PDEs with Gaussian random field inputs
(2022)SAM Research ReportWe establish summability results for coefficient sequences of Wiener-Hermite polynomial chaos expansions for countably-parametric solutions of linear elliptic and parabolic divergence-form partial differential equations with Gaussian random field inputs. The novel proof technique developed here is based on analytic continuation of parametric solutions into the complex domain. It differs from previous works that used bootstrap arguments ...Report