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Achterberg, M.A. (author)The COVID-19 pandemic has had a disruptive impact on healthcare systems and everyday life of the majority of the people around the globe. Despite many years of research on network epidemiology, many key aspects of disease transmission and in particular the response of people to the spread of a disease, remain poorly understood. On the basis of...doctoral thesis 2024
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Kraaijkamp, J.J.M. (author), Stijntjes, M. (author), de Groot, J.H. (author), Chavannes, N.H. (author), Achterberg, Wilco P. (author), van Dam van Isselt, E.F. (author)The aim of this study was to quantify physical activity and sedentary behavior in older adults recovering from hip fracture and to identify groups based on movement patterns. In this cross-sectional cohort study, older adults (≥70 years) were included 3 months after surgery for proximal femoral fracture. Patients received an accelerometer for...journal article 2024
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Achterberg, M.A. (author), Sensi, M. (author)The interplay between disease spreading and personal risk perception is of key importance for modelling the spread of infectious diseases. We propose a planar system of ordinary differential equations (ODEs) to describe the co-evolution of a spreading phenomenon and the average link density in the personal contact network. Contrary to...journal article 2023
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Kooij, Robert (author), Achterberg, M.A. (author)The effective graph resistance, also known as the Kirchhoff index, is metric that is used to quantify the robustness of a network. We show that the optimisation problem of minimizing the effective graph resistance of a graph by adding a fixed number of links, is NP-hard.journal article 2023
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Achterberg, M.A. (author), Van Mieghem, P.F.A. (author)The influence of people's individual responses to the spread of contagious phenomena, like the COVID-19 pandemic, is still not well understood. We investigate the Markovian Generalized Adaptive Susceptible-Infected-Susceptible (G-ASIS) epidemic model. The G-ASIS model comprises many contagious phenomena on networks, ranging from epidemics and...journal article 2022
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Liu, X. (author), Achterberg, M.A. (author), Kooij, Robert (author)pinion dynamics models study how the interaction among people influences the opinion formation process. In most opinion dynamics models, only one opinion can exist in the steady state, which is different from the real-life opinion formation process. In 2009, Shao et at. introduced a Non-Consensus Opinion (NCO) model, which allows different...conference paper 2022
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Achterberg, M.A. (author), Prasse, B. (author), Van Mieghem, P.F.A. (author)We analyze continuous-time Markovian ϵ-SIS epidemics with self-infections on the complete graph. The majority of the graphs are analytically intractable, but many physical features of the ϵ-SIS process observed in the complete graph can occur in any other graph. In this work, we illustrate that the timescales of the ϵ-SIS process are related...journal article 2022
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Achterberg, M.A. (author), Prasse, B. (author), Ma, L. (author), Trajanovski, S. (author), Kitsak, M.A. (author), Van Mieghem, P.F.A. (author)Researchers from various scientific disciplines have attempted to forecast the spread of coronavirus disease 2019 (COVID-19). The proposed epidemic prediction methods range from basic curve fitting methods and traffic interaction models to machine-learning approaches. If we combine all these approaches, we obtain the Network Inference-based...journal article 2022
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Prasse, B. (author), Achterberg, M.A. (author), Van Mieghem, P.F.A. (author)During the outbreak of a virus, perhaps the greatest concern is the future evolution of the epidemic: How many people will be infected and which regions will be affected the most? The accurate prediction of an epidemic enables targeted disease countermeasures (e.g., allocating medical staff and quarantining). But when can we trust the...journal article 2022
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Chang, Brian (author), Yang, Liufei (author), Sensi, M. (author), Achterberg, M.A. (author), Wang, F. (author), Rinaldi, M. (author), Van Mieghem, P.F.A. (author)We introduce a Markov Modulated Process (MMP) to describe human mobility. We represent the mobility process as a time-varying graph, where a link specifies a connection between two nodes (humans) at any discrete time step. Each state of the Markov chain encodes a certain modification to the original graph. We show that our MMP model...conference paper 2022
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Achterberg, M.A. (author), Dubbeldam, J.L.A. (author), Van Mieghem, P.F.A. (author), Stam, Cornelis J. (author)In the classical susceptible-infected-susceptible (SIS) model, a disease or infection spreads over a given, mostly fixed graph. However, in many real complex networks, the topology of the underlying graph can change due to the influence of the dynamical process. In this paper, besides the spreading process, the network adaptively changes its...journal article 2020
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Prasse, B. (author), Achterberg, M.A. (author), Ma, L. (author), Van Mieghem, P.F.A. (author)At the moment of writing, the future evolution of the COVID-19 epidemic is unclear. Predictions of the further course of the epidemic are decisive to deploy targeted disease control measures. We consider a network-based model to describe the COVID-19 epidemic in the Hubei province. The network is composed of the cities in Hubei and their...journal article 2020
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Achterberg, Hakim C. (author), Sørensen, Lauge (author), Wolters, Frank J. (author), Niessen, W.J. (author), Vernooij, Meike W. (author), Ikram, M. Arfan (author), Nielsen, Mads (author), de Bruijne, Marleen (author)Hippocampal volume and shape are known magnetic resonance imaging biomarkers of neurodegeneration. Recently, hippocampal texture has been shown to improve prediction of dementia in patients with mild cognitive impairment, but it is unknown whether texture adds prognostic information beyond volume and shape and whether the predictive value...journal article 2019
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- Achterberg, F.F. (author) master thesis 2013
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- Achterberg, F.F. (author) report 2013
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- Achterberg, F.F. (author) master thesis 2013
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- Achterberg, F.F. (author) report 2013
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- Achterberg, F.F. (author) report 2012
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- Achterberg, F.F. (author) report 2012
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Achterberg, J. (author), Dekker, K. (author), Pullen, W.R. (author)Dit rapport bevat de resultaten van een exploratieve studie over de relatie tussen de ontwikkeling van arbeidsproductiviteit in de verpleegzorg als gevolg van interventies in de de gebouwde omgeving.report 2006