Searched for: subject:"Sensitivity%5C+analysis"
(1 - 20 of 48)

Pages

document
Jaxa-Rozen, M. (author), Kwakkel, J.H. (author)
Complex environmental models typically require global sensitivity analysis (GSA) to account for non-linearities and parametric interactions. However, variance-based GSA is highly computationally expensive. While different screening methods can estimate GSA results, these techniques typically impose restrictions on sampling methods and input...
journal article 2018
document
Tene, M. (author), Stuparu, Dana E. (author), Kurowicka, D. (author), El Serafy, G.Y.H. (author)
This paper describes a novel sensitivity analysis method, able to handle dependency relationships between model parameters. The starting point is the popular Morris (1991) algorithm, which was initially devised under the assumption of parameter independence. This important limitation is tackled by allowing the user to incorporate dependency...
journal article 2018
document
Vonach, Tanja (author), Tscheikner-Gratl-Gratl, F. (author), Rauch, Wolfgang (author), Kleidorfer, Manfred (author)
Although calibration of a hydrodynamic model depends on the availability of measurement data representing the system behavior, advice for the planning of necessary measurement campaigns for model calibration is scarce. This work tries to address this question of efficient measurement site selection on a network scale for the objective of...
journal article 2018
document
çetinay-iyicil, H. (author), Kuipers, F.A. (author), Van Mieghem, P.F.A. (author)
This paper combines the fundamentals of an electrical grid, such as flow allocation according to Kirchhoff’s laws and the effect of transmission line reactances with spectral graph theory, and expresses the linearized power flow behaviour in slack-bus independent weighted graph matrices to assess the relation between the topological structure...
journal article 2018
document
Elham, A. (author)
A method is presented for concurrent aerostructural optimization of wing planform, airfoil and high lift devices. The optimization is defined to minimize the aircraft fuel consumption for cruise, while satisfying the field performance requirements. A coupled adjoint aerostructural tool, that couples a quasi-three-dimensional aerodynamic...
journal article 2017
document
Koppenol, D.C. (author)
Dermal wounds are a significant global problem; although the treatment of these wounds has improved considerably over the last few decades, a treatment still does not result in a complete regeneration of the injured tissue. Instead, the final outcome of the healing process is scar tissue. The material properties of scar tissue are different from...
doctoral thesis 2017
document
Di Matteo, Umberto (author), Nastasi, B. (author), Albo, Angelo (author), Astiaso Garcia, Davide (author)
Urban waste management is one of the most challenging issues in energy planning of medium and large cities. In addition to the traditional landfill method, many studies are investigating energy harvesting from waste, not as a panacea but as a foreseeable solution. Thermo-chemical conversion to biogas, or even bio-methane under certain...
journal article 2017
document
van der Veen, G.J. (author), Langelaar, M. (author), Van Der Meulen, Stan (author), Laro, Dick (author), Aangenent, Wouter (author), van Keulen, A. (author)
In pursuit of better accuracy, higher speed and larger scale, manufacturers of high-performance devices increasingly rely on components which have been designed with a multidisciplinary approach from the outset. In the context of motion systems, this means that for instance structural mechanics, control engineering and thermal analysis are...
journal article 2017
document
van der Blij, N.H. (author), Ramirez Elizondo, L.M. (author), Spaan, M.T.J. (author), Bauer, P. (author)
Instability caused by low inertia and constant power loads is a major challenge of DC distribution grids. Previous research uses oversimplified models or does not provide general rules for stability. Therefore, a comprehensive approach to analyze the stability of DC distribution systems is desired. This paper presents a method to algebraically...
journal article 2017
document
Pasma, J.H. (author), Boonstra, T.A. (author), van Kordelaar, J. (author), Spyropoulou, V. (author), Schouten, A.C. (author)
Balance control models are used to describe balance behavior in health and disease. We identified the unique contribution and relative importance of each parameter of a commonly used balance control model, the Independent Channel (IC) model, to identify which parameters are crucial to describe balance behavior. The balance behavior was expressed...
journal article 2017
document
Raji, B. (author), Tenpierik, M.J. (author), van den Dobbelsteen, A.A.J.F. (author)
The building envelope is the interface between the interior of the building and the outdoor environment. A building's energy consumption to a large extent depends on certain envelope design elements. As a consequence, for achieving high levels of energy-saving in buildings, design measures with high impact should be firstly defined and then...
journal article 2016
document
Marczak, F (author), Leclercq, Ludovic (author), Knoop, V.L. (author), Hoogendoorn, S.P. (author)
This paper deals with the derivation of analytical formulae to estimate the effective capacity at freeway merges in a multilane context. It extends two previous papers that are based on the same modeling framework but that are restricted to a single lane on the freeway (or to the analysis of the right lane only). The analytical expression for...
conference paper 2016
document
Oregui Echeverria-Berreyarza, M. (author), Nunez Vicencio, Alfredo (author), Dollevoet, R.P.B.J. (author), Li, Z. (author)
This paper presents a sensitivity analysis of railpad parameters on vertical railway track dynamics, incorporating the nonlinear behavior of the fastening (i.e., downward forces compress the railpad whereas upward forces are resisted by the clamps). For this purpose, solid railpads, rail-railpad contact and preloaded springs are defined in a...
journal article 2016
document
Elham, A. (author), van Tooren, M.J.L. (author)
This paper presents a method for wing aerostructural analysis and optimization, which needs much lower computational costs, while computes the wing drag and structural deformation with a level of accuracy comparable to the higher fidelity CFD and FEM tools. A quasi-threedimensional aerodynamic solver is developed and connected to a finite beam...
journal article 2016
document
Hong, Z. (author), Abdalla, M.M. (author)
Optimisation algorithms used to automatically size structural members commonly involve stress constraints to avoid material failure. Therefore the cost of optimisation grows rapidly as the number of structural members is increased due to the corresponding increase in the number of constraints. In this work, an efficient method for large scale...
conference paper 2016
document
Vermeulen, L.C. (author), Kraker, J. (author), Hofstra, N. (author), Kroeze, C. (author), Medema, G. (author)
Cryptosporidium is a protozoan parasite that can cause diarrhoea. Human faeces are an important source of Cryptosporidium in surface waters. We present a model to study the impact of sanitation, urbanization and population growth on human emissions of Cryptosporidium to surface waters. We build on a global model by Hofstra et al (2013 Sci. Total...
journal article 2015
document
Ghafarian Malamiri, H.R. (author)
The soil thermal properties (soil thermal conductivity, soil heat capacity and soil diffusivity) are the main parameters in the applications that need quantitative information on soil heat transfer. Conventionally, these properties are either measured in situ or estimated by semi-empirical models using the fractions of soil constituents. The use...
doctoral thesis 2015
document
Perkó, Z. (author)
This thesis presents novel adjoint and spectral methods for the sensitivity and uncertainty (S&U) analysis of multi-physics problems encountered in the field of reactor physics. The first part focuses on the steady state of reactors and extends the adjoint sensitivity analysis methods well established for pure neutron transport problems to...
doctoral thesis 2015
document
Sontrop, H.M.J. (author)
Microarrays offer biologists an exciting tool that allows the simultaneous assessment of gene expression levels for thousands of genes at once. At the time of their inception, microarrays were hailed as the new dawn in cancer biology and oncology practice with the hope that within a decade diseases like breast cancer would be solved. Various...
doctoral thesis 2015
document
Grobbe, N. (author), Maas, P. (author), Slob, E.C. (author), Mulder, W.A. (author)
conference paper 2015
Searched for: subject:"Sensitivity%5C+analysis"
(1 - 20 of 48)

Pages