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Unsupervised Learning for Public Transport Delay Pattern Analysis

Cheng, Y. (author), Krishnakumari, P.K. (author)

To analyze inherent and diverse patterns within line-based public transport daily delay occurrences, we introduce a data-driven exploratory analysis focused on the spatial-temporal distribution of these delays. Our approach relies on the utilization of the image pattern recognition technique and k-means clustering algorithm. We extract daily...

journal article 2024

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Functional analysis of web-based GIS tools for environmental justice assessment of transportation projects

Spriggs, A.M.S. (author), Rotman, Robin (author), Trauth, Kathleen (author)

Environmental justice – the concept that environmental amenities and burdens should be shared equitably among all races and socioeconomic classes – has gained diplomatic traction internationally, and political traction domestically in the United States, in recent years. In this paper, we focus on developing federal policy relevant to...

journal article 2024

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How can airports prepare for future public health disruptions? Experiences and lessons learned during the COVID-19 pandemic from a systemic perspective based on expert interviews

Nieuwborg, A.B.D. (author), Melles, M. (author), Hiemstra-van Mastrigt, S. (author), Santema, S.C. (author)

The COVID-19 pandemic proved to be an existential public health and economic crisis for the airport system. An interview study was conducted using Amsterdam Airport Schiphol as a use case to prepare for future public health disruptions. The study aimed to uncover key experiences and lessons learned by an airport system during the COVID-19...

journal article 2024

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Efficient and fail-safe quantum algorithm for the transport equation

Schalkers, M.A. (author), Möller, M. (author)

In this paper we present a scalable algorithm for fault-tolerant quantum computers for solving the transport equation in two and three spatial dimensions for variable grid sizes and discrete velocities, where the object walls are aligned with the Cartesian grid, the relative difference of velocities in each dimension is bounded by 1 and the...

journal article 2024

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A column-generation matheuristic approach for optimizing first-mile ridesharing services with publicly- and privately-owned autonomous vehicles

He, P. (author), Jin, Jian Gang (author), Trépanier, Martin (author), Schulte, F. (author)

The burden of first-mile connection to public transit stations is a key barrier that discourages riders from taking public transportation. Public transit agencies typically operate a modest fleet of vehicles to provide first-mile services due to the high operating costs, thus failing to adequately meet the first-mile travel demands,...

journal article 2024

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Prospective life cycle inventory datasets for conventional and hybrid-electric aircraft technologies

Thonemann, Nils (author), Saavedra-Rubio, Karen (author), Pierrat, Eleonore (author), Dudka, Katarzyna (author), Bangoura, Mathilde (author), Baumann, Nils (author), Bentheimer, Christian (author), Caliandro, Priscilla (author), De Breuker, R. (author)

Hybrid-electric aircraft represent a promising solution for the urgent need to decarbonize short-haul flights and bolster aviation sustainability. Nevertheless, the realization of hybrid-electric aircraft demands rigorous environmental impact analysis, given the substantial investments, time, and research required for technology development....

journal article 2024

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The importance of time-varying, non-tidal currents in modelling in-situ sand wave dynamics

Overes, P.H.P. (author), Borsje, B. W. (author), Luijendijk, Arjen (author), Hulscher, S. J.M.H. (author)

Sand waves are found on shallow, sandy seabeds throughout the world and their dynamics may pose an imminent threat to offshore construction. Therefore, there is a pressing need to understand bed level dynamics in sand wave areas. These bed level dynamics lead to variations in sand wave shape and migration rate over time. However, these...

journal article 2024

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Dynamics of freight transport decarbonization: A simulation study for Brazil

Ghisolfi, Verônica (author), Tavasszy, Lorant (author), Correia, Gonçalo (author), de Lorena Diniz Chaves, Gisele (author), Mattos Ribeiro, Glaydston (author)

Freight transport decarbonization is challenging due to the slow implementation of policies to meet climate goals. This paper analyzes the dynamics of the implementation of freight decarbonization measures. A System Dynamics model was developed and applied to the Brazilian freight system to simulate the use of more sustainable modes and means...

journal article 2024

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Eddy-Induced Dispersion of Sea Ice Floes at the Marginal Ice Zone

Gupta, M. (author), Gürcan, Emma (author), Thompson, Andrew F. (author)

Ocean heat exchanges at the marginal ice zone (MIZ) play an important role in melting sea ice. Mixed-layer eddies transport heat and ice floes across the MIZ, facilitating the pack's access to warm waters. This study explores these frontal dynamics using disk-shaped floes coupled to an upper-ocean model simulating the sea ice edge. Numerical...

journal article 2024

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Electrogenic sulfur oxidation by cable bacteria in two seasonally hypoxic coastal systems

Burdorf, Laurine D.W. (author), Cook, Perran L.M. (author), Robertson, Elizabeth K. (author), Tramper, Anton (author), Hidalgo-Martinez, Silvia (author), Vasquez-Cardenas, Diana (author), Malkin, Sairah Y. (author), Meysman, F.J.R. (author)

Cable bacteria can reach high densities in coastal sediments, and as a result of their unusual electrogenic lifestyle and intense metabolic activity, exert a major and distinct impact on biogeochemical cycling, both locally in sediments and at the ecosystem level. This appears to be particularly true for seasonally hypoxic systems, but the...

journal article 2024

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Multi-wavelength Raman microscopy of nickel-based electron transport in cable bacteria

Smets, Bent (author), Boschker, H.T.S. (author), Wetherington, Maxwell T. (author), Lelong, Gérald (author), Hidalgo-Martinez, Silvia (author), Polerecky, Lubos (author), Nuyts, Gert (author), De Wael, Karolien (author), Meysman, F.J.R. (author)

Cable bacteria embed a network of conductive protein fibers in their cell envelope that efficiently guides electron transport over distances spanning up to several centimeters. This form of long-distance electron transport is unique in biology and is mediated by a metalloprotein with a sulfur-coordinated nickel (Ni) cofactor. However, the...

journal article 2024

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A 1-dimensional-two-layer transient drift-flux model for hydraulic transport pipelines: modelling and experiments of bed layer erosion and density wave amplification

de Hoog, E. (author), van der Voort, Tjalie (author), Talmon, A.M. (author), van Rhee, C. (author)

Hydraulic transport pipelines in the dredging, mining and deep sea mining are designed using steady-state methods. However, these methods cannot predict density wave formation. Density waves form a risk for pipeline blockages, therefore there is a need to understand and preferably be able to model the process. The density waves studied in...

journal article 2024

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Hydrodynamically-Driven Deposition of Mud in River Systems

Dunne, K.B.J. (author), Nittrouer, J. A. (author), Abolfazli, E. (author), Osborn, R. (author), Strom, K. B. (author)

The riverine transport and deposition of mud is the primary agent of landscape construction and evolution in many fluvial and coastal environments. Previous efforts exploring this process have raised uncertainty regarding the effects of hydrodynamic and chemical controls on the transport and deposition of mud, and thus the constructions of...

journal article 2024

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A computational framework for pharmaco-mechanical interactions in arterial walls using parallel monolithic domain decomposition methods

Balzani, Daniel (author), Heinlein, A. (author), Klawonn, Axel (author), Knepper, Jascha (author), Nurani Ramesh, Sharan (author), Rheinbach, Oliver (author), Saßmannshausen, Lea (author), Uhlmann, Klemens (author)

A computational framework is presented to numerically simulate the effects of antihypertensive drugs, in particular calcium channel blockers, on the mechanical response of arterial walls. A stretch-dependent smooth muscle model by Uhlmann and Balzani is modified to describe the interaction of pharmacological drugs and the inhibition of smooth...

journal article 2024

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What factors influence the intention to use electric motorcycles in motorcycle-dominated countries? An empirical study in Vietnam

Nguyen-Phuoc, Duy Quy (author), Truong, Thi Minh (author), Nguyen, Minh Hieu (author), Pham, Huong Giang (author), Li, Z. (author), Oviedo-Trespalacios, O. (author)

Transitioning to electric motorcycles (EMs) can reduce dependence on carbon-based fuels, mitigate air pollution, and lower greenhouse gas emissions in countries where motorcycles dominate the transportation landscape. However, the factors influencing fleet electrification in these countries remain largely unknown. Given that this challenge...

journal article 2024

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The organo-metal-like nature of long-range conduction in cable bacteria

Pankratov, Dmitrii (author), Hidalgo Martinez, Silvia (author), Karman, Cheryl (author), Gerzhik, Anastasia (author), Gomila, Gabriel (author), Trashin, Stanislav (author), Boschker, H.T.S. (author), Geelhoed, Jeanine S. (author), Meysman, F.J.R. (author)

Cable bacteria are filamentous, multicellular microorganisms that display an exceptional form of biological electron transport across centimeter-scale distances. Currents are guided through a network of nickel-containing protein fibers within the cell envelope. Still, the mechanism of long-range conduction remains unresolved. Here, we...

journal article 2024

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Long distance accessibility by air transportation: a literature review

Yoo, Sihyun (author), van Wee, G.P. (author), Molin, E.J.E. (author)

Air transportation is a mode of transport developed specifically to provide access to long-distance destinations that may otherwise be infeasible or at least more difficult to reach. Accordingly, there are distinct aspects of air travel that require consideration when assessing accessibility by air transportation, which are not addressed in...

journal article 2024

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A shared PV system for transportation and residential loads to reduce curtailment and the need for storage systems

Diab, I. (author), Damianakis, Nikolaos (author), Chandra Mouli, G.R. (author), Bauer, P. (author)

This paper proposes a shared multi-stakeholder PV system for traction substations and nearby residential loads to reduce the need for storage, AC grid exchange, and curtailment. The residential stakeholders offer both the base electrical load and the solar panels installation space needed by the traction stakeholder, who brings the peak load...

journal article 2024

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Data Handling: Good Practices in the Context of Naturalistic Driving Studies

Al Haddad, Christelle (author), Alam, Md Rakibul (author), Papadimitriou, E. (author), Brijs, Tom (author), Antoniou, Constantinos (author)

Naturalistic driving studies (NDS) have recently gained attention as a way of instrumenting vehicles in an unobtrusive way and collecting driving data over long periods of time. Aiming at eventually modeling driving behavior, NDS are often a part of larger scale studies. These studies involve several stakeholders who are responsible for...

journal article 2024

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Passenger valuation of interchanges in urban public transport

Yap, M.D. (author), Wong, Howard (author), Cats, O. (author)

Understanding how passengers perceive public transport interchanges is important to better explain current public transport mode and route choice behaviour and to better predict future demand levels. In this study we derive how passengers value a public transport interchange in a metropolitan context entirely based on recent, large-scale,...

journal article 2024