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Liu, S. (author), Zhou, Yangxiao (author), Eiman, Fatima (author), McClain, M.E. (author), Wang, Xu sheng (author)To cope with the groundwater depletion problem and achieve sustainable groundwater development, groundwater conservation measures and managed aquifer recharge (MAR) have been implemented worldwide. However, knowledge gaps exit how does the aquifer system respond to these interventions differently and if these interventions are adequate to...journal article 2024
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Poulsen, C.B. (author)Substitution is a common and popular approach to implementing name binding in definitional interpreters. A common pitfall of implementing substitution functions is variable capture. The traditional approach to avoiding variable capture is to rename variables. However, traditional renaming makes for an inefficient interpretation strategy....conference paper 2023
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Dekking, F.M. (author), Keane, M.S. (author)We consider in general two-block substitutions and their fixed points. We prove that some of them have a simple structure: their fixed points are morphic sequences. Others are intrinsically more complex, such as the Kolakoski sequence. We prove this for the Thue-Morse sequence in base 3/2.journal article 2023
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Zhao, Yingliang (author), Sun, Yong (author), Guo, Z. (author), Qiu, Jingping (author), Sun, Xiaogang (author)Hazardous wastes are commonly immobilized using cementitious materials. Ettringite (Ca<sub>6</sub>Al<sub>2</sub>(OH)<sub>12</sub>(SO<sub>4</sub>)<sub>3</sub>∙26H<sub>2</sub>O) is one of the main components of hydrated cement and is known to stabilize anionic species. Thus, it is a promising material for the stabilization of arsenate (As(V))...journal article 2023
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Dekking, F.M. (author)We discuss the base 3/2 representation of the natural numbers. We prove that the sum-of-digits function of the representation is a fixed point of a 2-block substitution on an infinite alphabet, and that this implies that sum-of-digits function modulo 2 of the representation is a fixed point x<sub>3/2</sub> of a 2-block substitution on {0,1}....journal article 2023
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Bruno, Francesco (author)Demand for long-distance transport has been steadily increasing over the last years, worsening the environmental impact of the transport sector. Despite European governmental bodies and policy-makers directed considerable efforts towards the substitution of short-haul flights with greener rail alternatives, the desired results do not appear to...master thesis 2022
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Clercx, Josephine (author)This thesis aims to improve Coolblue's direct demand estimation model for substitutable products. Their current model consists of three sub-models which all provide their direct demand estimations. For every product, the direct demand is taken from one of the sub-models based on their performance in estimating the sales. The sub-models are the...master thesis 2022
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Putra, N.E. (author), Tigrine, A. (author), Aksakal, S. (author), de la Rosa, V. R. (author), Taheri, P. (author), Fratila-Apachitei, E.L. (author), Mol, J.M.C. (author), Zhou, J. (author), Zadpoor, A.A. (author)Additively manufacturing of porous iron offers a unique opportunity to increase its biodegradation rate by taking advantage of arbitrarily complex porous structures. Nevertheless, achieving the required biodegradation profile remains challenging due to the natural passivation of iron that decrease the biodegradation rate. Moreover, the...journal article 2022
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van Marsbergen, A.M. (author), Ton, D. (author), Nijënstein, Sandra (author), Annema, J.A. (author), van Oort, N. (author)In this study a unique bicycle sharing program (BSP) is studied: a BSP initiated by an urban transit provider (buses and trams). The idea is that the combined use of BSPs and buses and trams could increase the catchment area of urban transit alone, therefore offering a more competitive alternative for the car. However, in the scientific...journal article 2022
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Putra, N.E. (author), Borg, K. G.N. (author), Diaz Payno, P.J. (author), Leeflang, M.A. (author), Klimopoulou, M. (author), Taheri, P. (author), Mol, J.M.C. (author), Fratila-Apachitei, E.L. (author), Zhou, J. (author), Zadpoor, A.A. (author)Advanced additive manufacturing techniques have been recently used to tackle the two fundamental challenges of biodegradable Fe-based bone-substituting materials, namely low rate of biodegradation and insufficient bioactivity. While additively manufactured porous iron has been somewhat successful in addressing the first challenge, the limited...journal article 2022
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Zhao, Yi (author), Liang, K. (author), Zhao, Yanqi (author), Yang, Bo (author), Ming, Yang (author), Panaousis, Emmanouil (author)An algorithm substitution attack (ASA) can undermine the security of cryptographic primitives by subverting the original implementation. An ASA succeeds when it extracts secrets without being detected. To launch an ASA on signature schemes, existing studies often needed to collect signatures with successive indices to extract the signing key....journal article 2022
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Tavasszy, Matthias (author)Global Illumination provides natural and more realistic illumination of a scene by simulating the bouncing of light between surfaces. Due to its complex nature, it still remains a challenge to simulate this effect with real-time frame rates even on modern-day hardware. Existing methods are noisy and either require extensive filtering or long...master thesis 2021
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Hendrikx, Rosa (author)Concerns regarding the environmental impact of the aviation sector areincreasing. Especially short distance flights within Europe are criticized,since these itineraries could be replaced by more sustainable alternatives,namely international trains. More specifically, international trains combinedwith long distance flights, the air-rail journey,...master thesis 2021
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Narayan S., Jishnu (author), Cats, O. (author), van Oort, N. (author), Hoogendoorn, S.P. (author)The emergence of on-demand transport services is set to change the mobility landscape in urban areas. This study investigates the potential scalability of an on-demand mobility system to substitute motorised trips performed by private cars and public transport in Amsterdam, The Netherlands. We adopt an agent-based simulation framework and...journal article 2021
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Andrés Sastre, E. (author), Nossin, Y. (author), Jansen, I. (author), Kops, N. (author), Intini, C. (author), Witte-Bouma, J. (author), van Rietbergen, B. (author), Hofmann, S. (author), van Osch, G.J.V.M. (author)In recent decades, an increasing number of tissue engineered bone grafts have been developed. However, expensive and laborious screenings in vivo are necessary to assess the safety and efficacy of their formulations. Rodents are the first choice for initial in vivo screens but their size limits the dimensions and number of the bone grafts...journal article 2021
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de Haas, M.C. (author), Kroesen, M. (author), Chorus, C.G. (author), Hoogendoorn-Lanser, S. (author), Hoogendoorn, S.P. (author)In recent years, the e-bike has become increasingly popular in many European countries. With higher speeds and less effort needed, the e-bike is a promising mode of transport to many, and it is considered a good alternative for certain car trips by policy-makers and planners. A major limitation of many studies that investigate such...journal article 2021
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Putra, N.E. (author), Leeflang, M.A. (author), Minneboo, M.B. (author), Taheri, P. (author), Fratila-Apachitei, E.L. (author), Mol, J.M.C. (author), Zhou, J. (author), Zadpoor, A.A. (author)Extrusion-based 3D printing followed by debinding and sintering is a powerful approach that allows for the fabrication of porous scaffolds from materials (or material combinations) that are otherwise very challenging to process using other additive manufacturing techniques. Iron is one of the materials that have been recently shown to be...journal article 2021
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Putra, N.E. (author), Leeflang, M.A. (author), Taheri, P. (author), Fratila-Apachitei, E.L. (author), Mol, J.M.C. (author), Zhou, J. (author), Zadpoor, A.A. (author)Additively manufactured biodegradable porous iron has been only very recently demonstrated. Two major limitations of such a biomaterial are very low biodegradability and incompatibility with magnetic resonance imaging (MRI). Here, we present a novel biomaterial that resolves both of those limitations. We used extrusion-based 3D printing to...journal article 2021
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Modaresifar, K. (author), Ganjian, M. (author), Angeloni, L. (author), Minneboo, M.B. (author), Ghatkesar, M.K. (author), Hagedoorn, P.L. (author), Fratila-Apachitei, E.L. (author), Zadpoor, A.A. (author)Despite the potential of small-scale pillars of black titanium (bTi) for killing the bacteria and directing the fate of stem cells, not much is known about the effects of the pillars’ design parameters on their biological properties. Here, three distinct bTi surfaces are designed and fabricated through dry etching of the titanium, each...journal article 2021
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van Marsbergen, Annemiek (author)Recently many bicycle sharing programs have been introduced in cities worldwide. The combined use of shared bicycles and public transport could offer an attractive alternative for private motorised vehicles and could contribute to making cities better accessible and liveable. However, it is unsure whether this combination, especially with urban...master thesis 2020