All Outputs (191)

The impact of vaccination strategy on the spatiotemporal pattern dynamics of a COVID-19 epidemic model (2024)
Journal Article
Sekerci, Y., & Khoshnaw, S. H. (2024). The impact of vaccination strategy on the spatiotemporal pattern dynamics of a COVID-19 epidemic model. European Physical Journal Plus, 139(2), Article 174. https://doi.org/10.1140/epjp/s13360-024-04944-3

In the last 3 years, mathematical modelling and computational simulations have been used to discuss and estimate key transmission parameters of the spreading COVID-19 pandemics. There are several major factors that have played a crucial role in contr... Read More about The impact of vaccination strategy on the spatiotemporal pattern dynamics of a COVID-19 epidemic model.

Fractional approach to evolution of the magnetic field lines near the magnetic null points (2024)
Journal Article
Durmaz, H., Özdemir, Z., & Sekerci, Y. (2024). Fractional approach to evolution of the magnetic field lines near the magnetic null points. Physica Scripta, 99(2), Article 025239. https://doi.org/10.1088/1402-4896/ad1c7e

In this work, the magnetic reconnection model near null points in 3D space will be investigated using fractional calculations in the 3D magnetohydrodynamic framework. For the initial magnetic configuration (without external currents), we reformulated... Read More about Fractional approach to evolution of the magnetic field lines near the magnetic null points.

Viscous tubular-body theory for plane interfaces (2024)
Journal Article
Koens, L., & Walker, B. J. (2024). Viscous tubular-body theory for plane interfaces. Journal of Fluid Mechanics, 979, Article A38. https://doi.org/10.1017/jfm.2023.1085

Filaments are ubiquitous within the microscopic world, occurring in biological and industrial environments and displaying a varied dynamics. Their wide range of applications has spurred the development of a branch of asymptotics focused on the behavi... Read More about Viscous tubular-body theory for plane interfaces.

The slow viscous flow around a general rectangular doubly-periodic arrays of infinite slender cylinders (2023)
Journal Article
Koens, L., Vernekar, R., Krüger, T., Lisicki, M., & Inglis, D. W. (2023). The slow viscous flow around a general rectangular doubly-periodic arrays of infinite slender cylinders. IMA Journal of Applied Mathematics, 88(6), 869-887. https://doi.org/10.1093/imamat/hxae003

The slow viscous flow through a doubly-periodic array of cylinders does not have an analytical solution. However, as a reduced model for the flow within fibrous porous media and microfluidic arrays, this solution is important for many real-world syst... Read More about The slow viscous flow around a general rectangular doubly-periodic arrays of infinite slender cylinders.

Turbulence induced shear controllable synthesis of nano FePO4 irregularly-shaped particles in a counter impinging jet flow T-junction reactor assisted by ultrasound irradiation (2023)
Journal Article
Dong, B., Guo, Y., Yang, J., Yang, X., Wang, L., & Huang, D. (2023). Turbulence induced shear controllable synthesis of nano FePO4 irregularly-shaped particles in a counter impinging jet flow T-junction reactor assisted by ultrasound irradiation. Ultrasonics Sonochemistry, 99, Article 106590. https://doi.org/10.1016/j.ultsonch.2023.106590

FePO4 (FP) particles with a mesoporous structure amalgamated by nanoscale primary crystals were controllably prepared using an ultrasound-intensified turbulence T-junction microreactor (UTISR). The use of this type of reaction system can effectively... Read More about Turbulence induced shear controllable synthesis of nano FePO4 irregularly-shaped particles in a counter impinging jet flow T-junction reactor assisted by ultrasound irradiation.

Revisiting Student Evaluation of Teaching during the pandemic (2023)
Journal Article
Fry, J. (2023). Revisiting Student Evaluation of Teaching during the pandemic. Applied Economics Letters, https://doi.org/10.1080/13504851.2023.2178623

The pandemic has placed unprecedented pressures upon staff and students alike. Yet performance management of academics including Student Evaluation of Teaching (SET) persists. The American Association of University Professors (AAUP) has intervened on... Read More about Revisiting Student Evaluation of Teaching during the pandemic.

Mathematical modeling in the health risk assessment of air pollution-related disease burden in China: A review (2022)
Journal Article
Chung, C. Y., Yang, J., Yang, X., & He, J. (2022). Mathematical modeling in the health risk assessment of air pollution-related disease burden in China: A review. Frontiers in public health, 10, Article 1060153. https://doi.org/10.3389/fpubh.2022.1060153

This review paper covers an overview of air pollution-related disease burden in China and a literature review on the previous studies which have recently adopted a mathematical modeling approach to demonstrate the relative risk (RR) of air pollution-... Read More about Mathematical modeling in the health risk assessment of air pollution-related disease burden in China: A review.

A novel mathematical model for estimating the relative risk of mortality attributable to the combined effect of ambient fine particulate matter (PM2.5) and cold ambient temperature (2022)
Journal Article
Chung, C. Y., Yang, J., Yang, X., & He, J. (2023). A novel mathematical model for estimating the relative risk of mortality attributable to the combined effect of ambient fine particulate matter (PM2.5) and cold ambient temperature. Science of the Total Environment, 858, pt.1, Article 159634. https://doi.org/10.1016/j.scitotenv.2022.159634

Exposures to ambient fine particulate matter (PM2.5) and cold ambient temperatures have been identified as important risk factors in contributing towards the global mortality from chronic obstructive pulmonary disease (COPD). Despite China currently... Read More about A novel mathematical model for estimating the relative risk of mortality attributable to the combined effect of ambient fine particulate matter (PM2.5) and cold ambient temperature.

Chemically active filaments: analysis and extensions of slender phoretic theory (2022)
Journal Article
Katsamba, P., Butler, M. D., Koens, L., & Montenegro-Johnson, T. D. (2022). Chemically active filaments: analysis and extensions of slender phoretic theory. Soft matter, 18, 7051-7063. https://doi.org/10.1039/d2sm00942k

Autophoretic microswimmers self-propel via surface interactions with a surrounding solute fuel. Chemically-active filaments are an exciting new microswimmer design that augments traditional autophoretic microswimmers, such as spherical Janus particle... Read More about Chemically active filaments: analysis and extensions of slender phoretic theory.

Long-term effects of ambient air pollution on lung cancer and COPD mortalities in China: A systematic review and meta-analysis of cohort studies (2022)
Journal Article
Chee, Y., Yang, J., Yang, X., & He, J. (2022). Long-term effects of ambient air pollution on lung cancer and COPD mortalities in China: A systematic review and meta-analysis of cohort studies. Environmental Impact Assessment Review, 97, Article 106865. https://doi.org/10.1016/j.eiar.2022.106865

The long-term effects of ambient air pollution on lung cancer (LC) and chronic obstructive pulmonary disease (COPD) mortalities in the more polluted regions in the world require a comprehensive analysis. In this study, a systematic literature search... Read More about Long-term effects of ambient air pollution on lung cancer and COPD mortalities in China: A systematic review and meta-analysis of cohort studies.

Quantitative Methods in Finance using R (2022)
Book
Fry, J., & Burke, M. (2022). Quantitative Methods in Finance using R. Maidenhead: Open University Press

A novel asymptotic formulation for partial slip half-plane frictional contact problems (2022)
Journal Article
Moore, M., & Hills, D. (2022). A novel asymptotic formulation for partial slip half-plane frictional contact problems. Theoretical and Applied Fracture Mechanics, 121, Article 103457. https://doi.org/10.1016/j.tafmec.2022.103457

A method of solution and the necessary calibrations are given to permit the steady-state extent of slip to be found in contacts properly described within a half-plane formulation using only two parameters: the contact law and the first-order descript... Read More about A novel asymptotic formulation for partial slip half-plane frictional contact problems.

Attention to Authority: The behavioural finance of Covid-19 (2022)
Journal Article
Burke, M., Fry, J., Kemp, S., & Woodhouse, D. (2022). Attention to Authority: The behavioural finance of Covid-19. Finance research letters, 49, Article 103081. https://doi.org/10.1016/j.frl.2022.103081

In this paper we investigate the predictability of cryptocurrency returns following increases in Covid-19 cases/deaths. We find that the rate of government intervention moderates the impact that Covid-19 cases/deaths have on cryptocurrency returns. W... Read More about Attention to Authority: The behavioural finance of Covid-19.

Euler/Euler large eddy simulation of bubbly flow in bubble columns under CO2 chemisorption conditions (2022)
Journal Article
Long, S., Yang, X., Yang, J., & Sommerfeld, M. (2022). Euler/Euler large eddy simulation of bubbly flow in bubble columns under CO2 chemisorption conditions. Chemical Engineering Journal, 445, Article 136654. https://doi.org/10.1016/j.cej.2022.136654

It has been generally recognised that the turbulent dispersion force plays an important role in interphase momentum transfer. However, the effect of the added mass stress on the momentum and mass transfer in bubble column bubbly flow has not been add... Read More about Euler/Euler large eddy simulation of bubbly flow in bubble columns under CO2 chemisorption conditions.

The nascent coffee ring with arbitrary droplet contact set: an asymptotic analysis (2022)
Journal Article
Moore, M., Vella, D., & Oliver, J. (2022). The nascent coffee ring with arbitrary droplet contact set: an asymptotic analysis. Journal of Fluid Mechanics, 940, Article A38. https://doi.org/10.1017/jfm.2022.251

We consider the effect of droplet geometry on the early-stages of coffee ring formation during the evaporation of a thin droplet with an arbitrary simple, smooth, pinned contact line. We perform a systematic matched asymptotic analysis of the small-c... Read More about The nascent coffee ring with arbitrary droplet contact set: an asymptotic analysis.

Analysing the accuracy of asymptotic approximations in incomplete contact problems (2022)
Journal Article
Moore, M., & Hills, D. (2022). Analysing the accuracy of asymptotic approximations in incomplete contact problems. International Journal of Solids and Structures, 253, Article 111557. https://doi.org/10.1016/j.ijsolstr.2022.111557

The error incurred in the representation of the contact pressure at the edges of incomplete contacts by first order asymptotes is treated, and the maximum value of the relative error found for a range of geometries, both symmetric and non-symmetric.... Read More about Analysing the accuracy of asymptotic approximations in incomplete contact problems.

Tubular-body theory for viscous flows (2022)
Journal Article
Koens, L. (2022). Tubular-body theory for viscous flows. Physical Review Fluids, 7(3), Article 034101. https://doi.org/10.1103/PhysRevFluids.7.034101

Cable-like bodies play a key role in many interdisciplinary systems but are hard to simulate. Asymptotic theories, called slender-body theories, are effective but apply in specific regimes and can be hard to extend beyond leading order. In this lette... Read More about Tubular-body theory for viscous flows.

Jet-driven viscous locomotion of confined thermoresponsive microgels (2022)
Journal Article
Tanasijević, I., Jung, O., Koens, L., Mourran, A., & Lauga, E. (2022). Jet-driven viscous locomotion of confined thermoresponsive microgels. Applied physics letters, 120(10), Article 104101. https://doi.org/10.1063/5.0076244

We consider the dynamics of micro-sized, asymmetrically coated thermoresponsive hydrogel ribbons (microgels) under periodic heating and cooling in the confined space between two planar surfaces. As the result of the temperature changes, the volume an... Read More about Jet-driven viscous locomotion of confined thermoresponsive microgels.

On ribbon graphs and virtual links (2022)
Journal Article
Baldridge, S., H. Kauffman, L., & Rushworth, W. (2022). On ribbon graphs and virtual links. European Journal of Combinatorics, 103, Article 103520. https://doi.org/10.1016/j.ejc.2022.103520

We introduce a new equivalence relation on decorated ribbon graphs, and show that its equivalence classes directly correspond to virtual links. We demonstrate how this correspondence can be used to convert any invariant of virtual links into an invar... Read More about On ribbon graphs and virtual links.

Order and information in the patterns of spinning magnetic micro-disks at the air-water interface (2022)
Journal Article
Wang, W., Gardi, G., Malgaretti, P., Kishore, V., Koens, L., Son, D., …Sitti, M. (2022). Order and information in the patterns of spinning magnetic micro-disks at the air-water interface. Science Advances, 8(2), Article eabk0685. https://doi.org/10.1126/sciadv.abk0685

The application of the Shannon entropy to study the relationship between information and structures has yielded insights into molecular and material systems. However, the difficulty in directly observing and manipulating atoms and molecules hampers t... Read More about Order and information in the patterns of spinning magnetic micro-disks at the air-water interface.