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“My Flight Arrives at 5 am, Can You Pick Me Up?”: The Gatekeeping Burden of the African Academic
(2021)Journal of African Cultural StudiesOver the past decade, there has been increased awareness and discourse around the inequalities which structure North–South academic collaboration. The purpose of this discussion is to look at the other side of this dynamic: the gatekeeping burden of African scholars in facilitating Northern fieldwork within the African continent. We argue that this burden further exacerbates inherent inequalities within North–South relationships. By way ...Journal Article -
Blood flows: mapping journeys of menstrual waste in Blantyre, Malawi
(2022)Cities & HealthThe interplay between menstrual waste and urban sanitation infrastructure is largely hidden from view. Qualitative research has highlighted socio-cultural aspects of menstruation, but few quantitative studies have mapped the physical situation at scale. This study surveyed 258 women in Blantyre, Malawi about their menstrual absorbent choices, disposal practices, and socio-demographic characteristics. A Sankey diagram visualised flows of ...Journal Article -
Continuous-Time Control Model Validation using Finite Experimental Data
(1996)IEEE Transactions on Automatic ControlTheapplicationofrobustcontroltheoryrequires models containing unknown, bounded perturbations and unknown, bounded input signals. Model validation is a means of assessing the applicability of a given model with respect to experimental data. This paper develops a theoretical framework, and a computational solution, for the model validation problem in the case where the model, including unknown perturbations and signals, is given in the ...Journal Article -
Drivers of private-label purchase behavior across quality tiers and product categories
(2017)Journal of Business EconomicsPrivate labels hold a substantial share of consumers’ wallets and their popularity is still growing as they spread into various product categories and quality tiers. To determine the right branding strategy, in terms of offering uniform or different private-label brands across product categories, retailers have to know whether consumers use their private-label experience across product categories and private-label tiers. Therefore, we ...Journal Article -
A Framework for Distributed Estimation with Limited Information and Event-Based Communications
(2024)IEEE Transactions on Automatic ControlIn this paper, we consider the problem of distributed estimation in a sensor network, where multiple sensors are deployed to estimate the state of a linear time-invariant Gaussian system. By losslessly decomposing the Kalman filter, a framework of event-based distributed estimation is developed, where each sensor node runs a local filter using solely its own measurement, alongside with an event-based synchronization algorithm to fuse the ...Journal Article -
Development of the CMS detector for the CERN LHC Run 3
(2024)Journal of InstrumentationSince the initial data taking of the CERN LHC, the CMS experiment has undergone substantial upgrades and improvements. This paper discusses the CMS detector as it is configured for the third data-taking period of the CERN LHC, Run 3, which started in 2022. The entire silicon pixel tracking detector was replaced. A new powering system for the superconducting solenoid was installed. The electronics of the hadron calorimeter was upgraded. ...Journal Article -
Minimal and hybrid hydrogenases are active from archaea
(2024)CellMicrobial hydrogen (H2) cycling underpins the diversity and functionality of diverse anoxic ecosystems. Among the three evolutionarily distinct hydrogenase superfamilies responsible, [FeFe] hydrogenases were thought to be restricted to bacteria and eukaryotes. Here, we show that anaerobic archaea encode diverse, active, and ancient lineages of [FeFe] hydrogenases through combining analysis of existing and new genomes with extensive ...Journal Article -
Application of Generalized (Hyper-) Dual Numbers in Equation of State Modeling
(2021)Frontiers in Chemical EngineeringThe calculation of derivatives is ubiquitous in science and engineering. In thermodynamics, in particular, state properties can be expressed as derivatives of thermodynamic potentials. The manual differentiation of complex models can be tedious and error-prone. In this work, we revisit dual and hyper-dual numbers for the calculation of exact derivatives and show generalizations to higher order derivatives and derivatives with respect to ...Journal Article -
Aeromaneuvering in the Martian Atmosphere: Simulation-Based Analyses
(2000)Journal of Spacecraft and RocketsJournal Article -
Motives, perceptions and experiences of electric bicycle owners and implications for health, wellbeing and mobility
(2016)Journal of Transport GeographyThe sale of electrically assisted bicycles (‘e-bikes’) is growing at a rapid rate across Europe. Whereas market data is available describing sales trends, there is limited understanding of the experience of early adopters of e-bike technology. This paper investigates the motives for e-bike purchase, rider experience and perceived impact on mobility, health and wellbeing through in-depth interviews with e-bike owners in the Netherlands and ...Journal Article