Searched for: subject:"discretization"
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Lok, Peter (author)
Numerical modelling of high frequency waves is a complex and challenging area. Although the underlying equation seems simple, −∆φ − k2φ = f, the numerical challenges are not. This time harmonic wave equation is known as the Helmholtz equation. The main challenge to be studied is the pollution error, which is the difference between the actual and...
master thesis 2020
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Ton, D. (author), Bekhor, Shlomo (author), Cats, O. (author), Duives, D.C. (author), Hoogendoorn-Lanser, S. (author), Hoogendoorn, S.P. (author)
Active modes take up an increasingly important place on the global policy-making agenda. In the Netherlands, a country that is well-known for its high shares of walking and cycling, the government aims at achieving a modal shift among 200,000 commuting car drivers towards using the bicycle. To this end, policy measures need to be introduced....
journal article 2020
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Guo, Y. (author), Zhao, Chunfa (author), Markine, V.L. (author), Jing, Guoqing (author), Zhai, Wanming (author)
The discrete element method (DEM) has been confirmed as an effective numerical method for modelling railway ballast, and successfully used to analyse a wide range of ballast-related applications (e.g. geomaterials). However, there still exists some aspects under development. Among them, the model calibration can be the most significant one ...
journal article 2020
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Danaf, Mazen (author), Guevara, Angelo (author), Atasoy, B. (author), Ben-Akiva, Moshe (author)
Endogeneity arises in discrete choice models due to several factors and results in inconsistent estimates of the model parameters. In adaptive choice contexts such as choice-based recommender systems and adaptive stated preferences (ASP) surveys, endogeneity is expected because the attributes presented to an individual in a specific menu (or...
journal article 2020
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Lukyanov, A. (author), Vuik, Cornelis (author)
Smoothed particle hydrodynamics (SPH) has been extensively used to model high and low Reynolds number flows, free surface flows and collapse of dams, study pore-scale flow and dispersion, elasticity, and thermal problems. In different applications, it is required to have a stable and accurate discretization of the elliptic operator with...
journal article 2020
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Zhi, J. (author), Chen, B. Y. (author), Tay, T. E. (author)
Tremendous efforts have been put into the study of structural integrity and the understanding of failure mechanisms in composites. Geometric non-linearity, receiving few attention in coupon-level simulations, can play an important role in the design and analysis of larger structures. This paper aims at extending the recently-developed...
conference paper 2020
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De Schutter, B.H.K. (author), van den Boom, A.J.J. (author), Xu, J. (author), Safaei Farahani, S. (author)
The objective of this paper is to provide a concise introduction to the max-plus algebra and to max-plus linear discrete-event systems. We present the basic concepts of the max-plus algebra and explain how it can be used to model a specific class of discrete-event systems with synchronization but no concurrency. Such systems are called max...
journal article 2020
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Shi, Can (author), Zhao, Chunfa (author), Zhang, Xu (author), Guo, Y. (author)
This paper presents a multi-layer railway ballast track and substructure model, where a coupled discrete and continuous method is used for macro-meso dynamic behaviour analysis under moving wheel loads. In this coupled model, the discrete element method (DEM) is utilised to build the superstructure of the ballast track (i.e. rail, fastener,...
journal article 2020
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Vikrant, V. (author), Padding, J.T. (author)
A novel approach to Multiphase-Particle-in-Cell (MP-PIC), called Continuum Particle Model (CPM), is developed for dense gas-particle flows. CPM has high computational speed, comparable to that of MP-PIC, but a robustness and accuracy closer to that of a Discrete Element Model (DEM). The gas phase is treated as a continuum phase and particles...
journal article 2020
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Zhang, H. (author), Xu, Y. (author), Gan, Y. (author), Schlangen, E. (author), Šavija, B. (author)
This paper presents a validation process of the developed multi-scale modelling scheme on mortar composites. Special attention was paid to make the material structure of real and virtual mortar specimens comparable at the meso-scale. The input mechanical parameters of cement paste (both bulk cement paste and interfacial transition zone) at the...
journal article 2020
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Kosmidis, Ioannis (author)
This study aims to explore the preferences of citizens regarding fairness considerations related to the distribution of the effects of road safety policies in order to provide with policy recommendations that will help to promote more fair road safety policies. To achieve this aim the Discrete Choice Approach is going to be followed, using...
master thesis 2019
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Caminada, Sytze (author)
Serious games have the potential to be used as an innovative data collection method. Combining this with Discrete Choice Modelling (DCM) could create a methodology that provides insight into the player's behaviour and allows for creating a realistic simulation. This innovative Game and Choice Based Simulation (GCBS) methodology has been...
master thesis 2019
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Mekić, Adin (author)
Agent-based modelling and simulation has shown to be a suitable paradigm for analyzing complex airport systems, such as airport security checkpoints. The models can be used to analyze important airport terminal performance areas, such as security and efficiency. However, limited knowledge exists on how agent-based models can be used to aid...
master thesis 2019
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Kievits, Servaas (author)
Inland waterway transport (IWT) is one of the three main modalities for inland transport of dry, liquid and containerized cargo. As IWT performs well on cost-competitiveness, environmental friendliness, and congestion-related issues, authorities strive to shift freight transport from road to water. Inland waterway connections, however, are...
master thesis 2019
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Yousefi, Sahar (author), Manzuri Shalmani, M.T. (author), Lin, Jeremy (author), Staring, M. (author)
The problem of motion detection has received considerable attention due to the explosive growth of its applications in video analysis and surveillance systems. While the previous approaches can produce good results, the accurate detection of motion remains a challenging task due to the difficulties raised by illumination variations, occlusion...
journal article 2019
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Chen, P. (author), van Gelder, P.H.A.J.M. (author), Mou, J. M. (author)
The maritime shipping industry has been making significant contributions to the development of the regional and global economy. However, maritime accidents and their severe consequences have been posing an incrementing risk to the individuals and societies. It is therefore important to conduct risk analysis on such accidents to support...
journal article 2019
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Vos, Daniël (author)
A switching max-plus linear model is a framework to describe the discrete dynamics of the timing of events. To influence these systems one can choose the routes of jobs and the orderings of operations as input for the system. In this thesis the techniques of model predictive control are used to find good input values. The problem of finding the...
master thesis 2019
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van Gorp, Ellis (author)
The population of The Netherlands is ageing. It is important to offer suitable transportation options for the elderly to keep them participating in social activities to prevent lonelines. This research investigated the preferences and usage of bus services of elderly in urban areas in The Netherlands and the corresponding heterogeneity. 256...
master thesis 2019
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Kiran Kumar, Kiran (author)
The growing energy demands and the global shift towards Renewable Energy resources (RES), has resulted in rapid growth of the electrical power grid. With the integration of further RES into the power grid, the need for a resilient and smart power grid has never been greater. For meeting this necessity, the electrical power grid is undergoing a...
master thesis 2019
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Dankert, Thomas (author)
Deregulation within the aviation market led to constant decreasing revenue of airfares while airlines across the market spectrum sharpen their focus on ancillaries. The objective of this thesis project is to utilize revealed preference data in a case-study of KLM Royal Dutch Airways to better understand the customer relation towards ancillaries....
master thesis 2019
Searched for: subject:"discretization"
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