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Optically Accessible Gas Exposure Apparatus For Testing And Characterization Of Holographic Gas Sensors, Graceson Antony, Rinto Eyyalil Joseph, Saji George, Dervil Cody, Izabela Naydenova

Articles

Holographic gas sensors are of great interest due to their widespread applicability and potential for high sensitivity, fast response, immunity to electromagnetic interference, and compact and lightweight nature. For effective design and development of holographic gas sensors, it is essential to have a reliable and safe gas exposure system allowing for optical access for testing purposes. Here, the design and operation of a custom gas exposure apparatus for the performance evaluation of holographic grating-based gas sensors within a research laboratory setting is presented. The apparatus enables the real-time measurement of analyte-induced changes in key holographic grating parameters: grating diffraction efficiency …

Comparison Of Holographic Recording Options For Reflection-Format And Transmission-Format Coupler-Type Diffractive Optical Elements: Theoretical Exploration And Experimental Validation, Dipanjan Chakraborty, Rosen Georgiev, Vincent Toal, Izabela Naydenova, Dervil Cody, Suzanne Martin

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The holographic recording of gratings that have very large diffraction angles and/or slants is challenging because recording requires beam angles that are not possible without the use of prisms. However, by using a recording wavelength that is different from (usually shorter than) the intended operating wavelength, it is possible to record with less challenging beam angles. In this paper, a recently developed model that allows systematic investigation of the potential and limits of this wavelength-shift recording technique is extended to include a reflection format. Transmission and reflection recording options are compared systematically for the first time, and it is shown …

Myopia Progression Following 0.01% Atropine Cessation In Australian Children: Findings From The Western Australia – Atropine For The Treatment Of Myopia (Wa-Atom) Study, Samantha Sze Yee Lee, Vinay Kumar Nilagiri, Gareth Lingham, Magdalena Blaszkowska, Paul G. Sanfilippo, Maria Franchina, Antony Clark, David A. Mackey

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Background: A rebound in myopia progression following cessation of atropine eyedrops has been reported, yet there is limited data on the effects of stopping 0.01% atropine compared to placebo control. This study tested the hypothesis that there is minimal rebound myopia progression after cessation of 0.01% atropine eyedrops, compared to a placebo. Methods: Children with myopia (n = 153) were randomised to receive 0.01% atropine eyedrops or a placebo (2:1 ratio) daily at bedtime during the 2-year treatment phase of the study. In the third year (wash-out phase), all participants ceased eyedrop instillation. Participants underwent an eye examination every 6 …

Modeling Redistribution Of Nanozeolites In Holographic Recording, Dana Mackey, Jack Lyons, Izabela Naydenova

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Zeolite doped photopolymers have been studied experimentally due to their potential application in the development of optical sensors. It has been shown that dopant redistribution can be achieved by holographic recording and has a direct influence on the sensitivity of the recorded grating. To achieve better theoretical understanding of these processes, this paper proposes an extended photopolymerization-diffusion mathematical model for describing the dynamics of nanozeolite redistribution during recording in an acrylamide-based photopolymer. Using numerical simulations of this model, we investigate how recording conditions, dopant transport parameters, and initial load affect the refractive index modulation of the resulting photonic structure.

Holographic Multiplexing In A Photopolymerisable Hybrid Sol-Gel, Pamela Stoeva, Tatsiana Mikulchyk, Izabela Naydenova, Kevin Murphy

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Holographic multiplexing techniques enhance functionality and information storage by leveraging the inherent selectivity of holograms. This is crucial for advancing holographic sensors, which excel in simultaneously detecting multiple parameters from a single input signal. This study explores the potential of the recent photopolymerisable hybrid sol-gel (PHSG) material for application in Space sensing systems through the investigation of its holographic angular multiplexing capabilities. For the first time, to the best of our knowledge, we report the successful recording of up to five angularly multiplexed gratings with diffraction efficiencies (DE) ≥ 15% in 187 ± 18 µm PHSG layers. A 3 mW/cm2 …

Comparing Thin And Volume Regimes Of Analog Holograms For Wavefront Sensing, Emma Branigan, Andreas Zepp, Suzanne Martin, Matthew Sheehan, Szymon Gladysz, Kevin Murphy

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Two analog holographic wavefront sensors, for measurement of defocus, have been fabricated as both thin and volume phase transmission holograms in a self-developing photopolymer. This represents the first reported direct comparison of hologram regimes when designed for wavefront sensing. An analysis of the effect of crosstalk in the presence of one other aberration mode (astigmatism X (0/90°), coma X (horizontal), and primary spherical aberration) was carried out with each version of the sensor. The performance of thin and volume analog holographic wavefront sensors was characterized under emulated conditions associated with moderate atmospheric turbulence.

Global, Regional, And National Burden Of Heatwave-Related Mortality From 1990 To 2019: A Three-Stage Modelling Study, Qi Zhao, Shanshan Li, Tingting Ye, Yao Wu, Antonio Gasparrini, Shilu Tong, Aleš Urban, Ana Maria Vicedo-Cabrera, Aurelio Tobias, Ben Armstrong, Dominic Royé, Eric Lavigne, Francesca De'donato, Francesco Sera, Haidong Kan, Joel Schwartz, Mathilde Pascal, Niilo Ryti, Patrick Goodman, Paulo Hilario Nascimento Saldiva, Michelle L. Bell, Yuming Guo

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Background The regional disparity of heatwave-related mortality over a long period has not been sufficiently assessed across the globe, impeding the localisation of adaptation planning and risk management towards climate change. We quantified the global mortality burden associated with heatwaves at a spatial resolution of 0.5∘×0.5∘and the temporal change from 1990 to 2019. Methods and findings We collected data on daily deaths and temperature from 750 locations of 43 countries or regions, and 5 meta-predictors in 0.5∘×0.5∘ resolution across the world. Heatwaves were defined as location-specific daily mean temperature ≥95th percentiles of year-round temperature range with duration ≥2 days. We …

The Multi-Country Multi-City Collaborative Research Network An International Research Consortium Investigating Environment, Climate, And Health, Multi-Country Multi-City (Mcc) Collaborative Network, Patrick Goodman

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Research on the health risks of environmental factors and climate change requires epidemiological evidence on associated health risks at a global scale. Multi-center studies offer an excellent framework for this purpose, but they present various methodological and logistical problems. This contribution illustrates the experience of the Multi-Country Multi-City Collaborative Research Network, an international collaboration working on a global research program on the associations between environmental stressors, climate, and health in a multi-center setting. The article illustrates the collaborative scheme based on mutual contribution and data and method sharing, describes the collection of a huge multi-location database, summarizes published research findings …

Short-Term Effects Of Cyclopentolate And Tropicamide Eye Drops On Macular Choroidal Thickness In Myopic Children, Emmanuel Kobia-Acquah, Daniel Ian Flitcroft, Gareth Lingham, Eoin Kerin, James Loughman

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Background: To investigate the short-term effects of cyclopentolate and tropicamide eyedrops on choroidal thickness (ChT) in myopic children using placebo or low-dose atropine eyedrops. Methods: The analysis included 242 myopic individuals (7–19 years) enrolled in two randomised placebo-controlled clinical trials of low-dose atropine eyedrops. Cycloplegia was induced using either one drop of 1% cyclopentolate (n = 161), two drops of 1% cyclopentolate (n = 32) or two drops of 1% tropicamide (n = 49). ChT measurements were taken using swept-source optical coherence tomography before and 30 min after administering the cycloplegic eye drops. A subset of 51 participants underwent test–retest …

Disaggregating Longer-Term Trends From Seasonal Variations In Measured Pv System Performance, Chibuisi Chinasaokwu Okorieimoh, Brian Norton, Michael Conlon

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Photovoltaic (PV) systems are widely adopted for renewable energy generation, but their performance is influenced by complex interactions between longer-term trends and seasonal variations. This study aims to remove these factors and provide valuable insights for optimising PV system operation. We employ comprehensive datasets of measured PV system performance over five years, focusing on identifying the distinct contributions of longer-term trends and seasonal effects. To achieve this, we develop a novel analytical framework that combines time series and statistical analytical techniques. By applying this framework to the extensive performance data, we successfully break down the overall PV system output into …

Qos-Aware Power-Optimized Path Selection For Data Center Networks (Q-Pops), Mohammed Nsaif, Gergely Kovásznai, Ali Malik, Ruairí De Fréin

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Data centers consume significant amounts of energy, contributing indirectly to environmental pollution through greenhouse gas emissions during electricity generation. According to the Natural Resources Defense Council, information and communication technologies and networks account for roughly 10% of global energy consumption. Reducing power consumption in Data Center Networks (DCNs) is crucial, especially given that many data center components operate at full capacity even under low traffic conditions, resulting in high costs for both service providers and consumers. Current solutions often prioritize power optimization without considering Quality of Service (QoS). Services such as video streaming and Voice over IP (VoIP) are particularly …

Dynamic Thermal Effect In A Hollow Core Microbottle Resonator, Zhe Wang, Zhuochen Wang, Anuradha Rout, Rayhan Habib Jibon, Anand V. R, Fangfang Wei, Qiang Wu, Yuliya Semenova, Northumbria University

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Dynamic thermal wavelength shift in hollow core microbottle resonators has been experimentally demonstrated using the frequency-detuning method. A linewidth broadening phenomenon is observed when the tunable laser is swept from a shorter wavelength to a longer wavelength. The thermal effect in the microbottles with various diameters as a function of the power and sweep frequency of the tunable laser has been studied and analyzed. In addition, the effect of thermal broadening on multiple WGM resonances within the spectrum has been observed, demonstrating that broadening of the linewidth of the first WGM resonance suppresses the subsequent WGM resonances during the up-scanning …

Addressing The Complexity Of Spatial Teaching: A Narrative Review Of Barriers And Enablers, Ergi Bufasi, Ting Jun Lin, Ursa Benedicic, Marten Westerhof, Rohit Mishra, Dace Namsone, Inese Dudareva, Sheryl Sorby, Lena Gumaelius, Remke M. Klapwijk, Jeroen Spandaw, Brian Bowe, Colm O'Kane, Gavin Duffy, Marianna Pagkratidou, Jeffrey Buckley

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Extensive research has established that spatial ability is a crucial factor for achieving success in Science, Technology, Engineering, and Mathematics (STEM). However, challenges that educators encounter while teaching spatial skills remain uncertain. The purpose of this study is to develop a research framework that examines the interrelationships, barriers, and enablers amongst various educational components, including schools, teachers, students, classrooms, and training programs, that are encountered when teaching for spatial ability development. A thorough examination of international research, in combination with a detailed review of the primary Science and Mathematics curricula in Ireland, Latvia, Sweden, and the Netherlands, is undertaken to …

Augmenting K-Means Clustering With Qualitative Data To Discover The Engagement Patterns Of Older Adults With Multimorbidity When Using Digital Health Technologies: Proof-Of-Concept Trial, Yiyang Sheng, Raymond Bond, Rajesh Jaiswal, John Dinsmore, Julie Doyle

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Background: Multiple chronic conditions (multimorbidity) are becoming more prevalent among aging populations. Digital health technologies have the potential to assist in the self-management of multimorbidity, improving the awareness and monitoring of health and well-being, supporting a better understanding of the disease, and encouraging behavior change. Objective: The aim of this study was to analyze how 60 older adults (mean age 74, SD 6.4; range 65-92 years) with multimorbidity engaged with digital symptom and well-being monitoring when using a digital health platform over a period of approximately 12 months. Methods: Principal component analysis and clustering analysis were used to group participants …

Household Food Waste Generation In High-Income Countries: A Scoping Review And Pooled Analysis Between 2010 And 2022, Courage Y. Krah, Majid Bahramian, Paul Hynds, Anushree Priyadarshini

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Based on the high volume of research pertaining to household food waste (FW) generation, a significant proportion of existing studies present findings that lack comparability and general transferability, largely due to their confinement to individual countries or regions. Likewise, results frequently exhibit considerable variability and cross-study incongruities. Merging individual studies into broader scoping reviews can elucidate the underlying reasons for this variability between studies, enhance overall comparability and generalizability of findings, and subsequently expand overall applicability. The current scoping review and pooled analysis examined household FW generation data from high-income countries using the Population Concept Context (PCC) framework, identifying and …

Textural Characterisation Of Wheat–Oat Breads Using A Combination Of Quantitative Descriptive Analysis And Partial Napping Profiling Techniques, Mahmoud Said Rashed, Shivani Pathania, Eimear Gallagher, Jesus M. Frias, Ciara Mcdonagh, Emily Crofton

Articles

The aim of this study was to determine the textural sensory profile of wheat breads developed using oat flour at different substitution levels (10%, 30%, and 50%) and particle sizes (<224, 250–280, 280–500, 500–600 μm). A trained descriptive panel evaluated the wheat–oat breads using quantitative descriptive analysis (QDA) (n = 8) and partial napping (PN) (n = 12) sensory techniques. The QDA results showed that the textural properties of the breads were significantly affected by oat flour at different substitution and particle size levels (P < 0.001). The attributes crumb ‘denseness' and ‘stickiness' discriminated most frequently across samples, while crumb ‘chewiness' and ‘dryness' discriminated the least. Principal component analysis (PCA) illustrated that in PC1 (59%) crumb ‘denseness' was positively correlated with crumb ‘hardness' and ‘graininess', while ‘stickiness' was negatively correlated with crumb ‘graininess'. The application of clustering techniques on QDA data showed that breads with 10% oat flour were differentiated based on particle size; however, as the substitution level of oat flour increased, the substitution level of oat flour used in formulations exceeded the effect of particle size. In terms of PN, panellists identified four distinct groups of wheat–oat breads, indicating that wheat breads with 10% oat flour and <224 μm, 280–500 μm and whole oat flour had similar textural properties to the control wheat bread sample. The texture of wheat breads substituted with 50% oat flour were very different to the control. The results of this study suggest that in addition to the effect of substitution level, fractionation of oat flour may have application in the production of wheat bread formulations with different textural profiles. The findings also emphasise the importance of considering clustering techniques when evaluating complex samples for new product development applications.

The Effects Of Preharvest Silicon Treatment And Passive Map On Quality And Shelf Life Of White Button Mushrooms In Thermoformed Recycled Pet Packaging System, Tigist T. Shonte, Helen Grogan, Jesus Maria Frias Celayeta, Francesco S. Giordano, Andrew Reynolds, Orla O'Halloran, Lorraine Foley, Shivani Pathania

Articles

A crop pretreatment with silicon was combined with passive modified atmosphere packaging (PMAP) in a thermoformed recycled PET packaging format as a novel approach to minimize the quality degradation in mushrooms. This study was aimed to evaluate the effects of (a) two preharvest treatments, namely preharvest control (PHTC) and preharvest silicon treatment (PHTS) and (b) four packaging lid formats, namely PMAP1: a single hole of 1.1 mm size, PMAP2: two holes of 0.53 mm size, PMAP3: three holes of 0.53 mm size, and PMAPC: OMNI-PW micro perforated cling film as a control on the quality and shelf life of mushrooms …

Bridging The Gap: Determinants Of Consumers' Willingness To Pay For Environmentally Friendly Packages Of Leafy Greens, Carissa Dieli, Anushree Priyadarshini, Robert Ludgate, Lorraine Foley

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Government and corporate policies have mandated a reduction in plastic packaging to combat issues of waste and climate change. This move towards sustainable packaging alternatives in the fresh food sector will increase costs for consumers. Much of the present research finds consumers are willing to pay more for sustainability, but their willingness to pay (WTP) does not align with real-world purchases, representing an attitude–behaviour gap. To combat this gap, it is posited that consumers' current purchasing- and sustainability-related behaviours will meaningfully correlate with their WTP and bridge the attitude–behaviour gap. This research used an online survey (n = 476) to …

A Comprehensive Review Of Cured Meat Products In The Irish Market: Opportunities For Reformulation And Processing, Jan Roland G. Molina, Jesús M. Frías-Celayeta, Declan J. Bolton, Cristina Botinestean

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No abstract provided.

Influence Of Seasonality And Public-Health Interventions On The Covid-19 Pandemic In Northern Europe, Gerry A. Quinn, Michael Connolly, Norman E. Fenton, Steven J. Hatfill, Paul Hynds, Coilín Óhaiseadha, Karol Sikora, Willie Soon, Ronan Connolly

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Background: Most government efforts to control the COVID-19 pandemic revolved around non-pharmaceutical interventions (NPIs) and vaccination. However, many respiratory diseases show distinctive seasonal trends. In this manuscript, we examined the contribution of these three factors to the progression of the COVID-19 pandemic. Methods: Pearson correlation coefficients and time-lagged analysis were used to examine the relationship between NPIs, vaccinations and seasonality (using the average incidence of endemic human beta-coronaviruses in Sweden over a 10-year period as a proxy) and the progression of the COVID-19 pandemic as tracked by deaths; cases; hospitalisations; intensive care unit occupancy and testing positivity rates in six …

Impact Of Silicon-Enriched Plant Biostimulant Treatment On Shelf-Life Of Baby Spinach (Spinacia Oleracea) Crops, Francesco S. Giordano, Andrew Reynolds, Jesus M. Frias, Lorraine Foley

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This research presents the findings from a series of experiments to assess and quantify the influence of compostable plastic packaging in combination with silicon biostimulant on waste produced in a typical leafy horticultural product. The research was conducted firstly by using an agricultural biostimulant consisting in varying supplementation with monosilicic acid, performed in 16 blocks with 3 different treatments and compared against the control samples. In addition, Equilibrium Modified Atmosphere Packaging (EMAP) packaging was designed using polypropylene (OPP) and compostable polylactic acid (PLA) films in order to assess the effect of potential mitigation of food waste production in combination with …

Structure-Function Relationship Of Oat Flour Fractions When Blended With Wheat Flour: Instrumental And Nutritional Quality Characterization Of Resulting Breads, Mahmoud Said Rashed, Milica Pojić, Ciara Mcdonagh, Eimear Gallagher, Jesus M. Frias, Shivani Pathania

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Abstract: The present work investigated the structure-function relationship of dry fractionated oat flour (DFOF) as a techno-functional ingredient using bread as a model system. Mechanically, DFOF fractions (F), that is, F1: <224 µm, F2: 250–280 µm, F3: 280–500 µm, F4: 500–600 µm, and whole oat flour (F5) were blended with white wheat flour at 10%, 30%, and 50% substitution levels for bread making. The blended flours, doughs, and bread samples were assessed for their techno-functional, nutritional, and structural characteristics. The results of Mixolab and the Rapid Visco Analyzer show that the 50% substituted F3 fraction exhibits the highest water absorption properties (69.53%), whereas the 50% F1 fraction exhibits the highest peak viscosity of the past slurry. Analysis of bread samples revealed a lower particle size of DFOF fractions and higher supplementation levels, increased β-glucan levels (0.13–1.29 g/100 bread (db), reduced fermentable monosaccharides, that is, glucose (1.44–0.33 g/100 g), and fructose (1.06–0.28 g/100 g). The effect of particle size surpassed the substitution level effect on bread volume reduction. The lowest hardness value for F1 is 10%, and the highest value for F2 is 50%. The total number of cells in the bread slice decreased from the control to the F4 fraction (50%). Multi-criteria analysis indicated that DFOF fractions produced breads with similar structure and higher nutritional value developed from white wheat flour. Practical Application: The use of mechanically fractionated oat flours fractions in white wheat flour breads can improve the nutritional profile without affecting the physical properties of the bread product. Based on the oat flour fractions, bakers and food processing companies can tailor the bread formulations for high β-glucan, high fiber, and low reduced sugar claims.

Ireland, Intellectual Property And The Political Economy Of Information Monopolies, Kenneth W. Murphy

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Ireland’s policies towards US-owned global digital intermediaries (Big Tech) have emerged as an international political issue and received global media attention. So far, political and media focus has been on the impact of Ireland’s tax policies on the revenue-raising ability of other European states and perceptions of light touch regulation of those corporations based in the Republic. The current paper will focus on how Ireland’s switch to a focus on capital allowances for the sizeable American tech corporations has enabled the latter to sustain their dominance in the digital transition through incentivizing and subsidizing their switch to assetization as a …

Myopia Progression Patterns Among Paediatric Patients In A Clinical Setting, Michael Moore, Gareth Lingham, Daniel Ian Flitcroft, James Loughman

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Purpose

This retrospective analysis of electronic medical record (EMR) data investigated the natural history of myopic progression in children from optometric practices in Ireland.

Methods

The analysis was of myopic patients aged 7–17 with multiple visits and not prescribed myopia control treatment. Sex- and age-specific population centiles for annual myopic progression were derived by fitting a weighted cubic spline to empirical quantiles. These were compared to progression rates derived from control group data obtained from 17 randomised clinical trials (RCTs) for myopia. Linear mixed models (LMMs) were used to allow comparison of myopia progression rates against outputs from a predictive …

Enhancing Inclusive Entrepreneurial Activity Through Community Engagement Led By Higher Education Institutions, Emma O'Brien, Thomas M. Cooney

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Purpose: While supporting entrepreneurship through government intervention has become a global phenomenon, the OECD (2021) has identified that several communities (including women, youth, seniors, unemployed and immigrants) remain under-represented in terms of entrepreneurial activity. Inclusive entrepreneurship policies seek to enhance economic and social inclusion and emphasise the significant contribution that people from within these communities could make to local and regional development if appropriate support was offered. The purpose of this study is to examine how higher education institutions (HEIs) can co-create inclusive entrepreneurial training initiatives with local communities that support economic and social inclusion. Design/methodology/approach: This in-depth qualitative study …

Navigating Gendered Spaces: A Feminist Phenomenological Exploration Of Women Entrepreneurs Lived Experiences Within Government Support Agencies, Edicleia Oliveira, Serge Basini, Thomas M. Cooney

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Purpose: This article explores women entrepreneurs' lived experiences in their interactions with government enterprise support agencies. It investigates the relationship between gendering and Entrepreneurial Orientation (EO), as a normative orientation adopted at the institutional level and justified by an economic rationale. It also explores how women entrepreneurs articulate their experiences through embodied metaphors and image schemas, shedding light on how they navigate the institutional entrepreneurial space. Design/methodology/approach: This study is framed within the concept of Phenomenological Orientation as conceptualised in feminist phenomenology. It applies Interpretative Phenomenological Analysis, a qualitative methodology focused on interpreting accounts of first-person lived experiences of a …

Entrepreneurship As Collective Action: The Next Frontier., Cyrine Ben-Hafaïedh, Claire Champenois, Thomas M. Cooney, Leon Schjoedt

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Collective action in entrepreneurship is lacking in the extant literature. Despite entrepreneurship research progressively moves away from the focus of a lone heroic entrepreneur, scholars have yet to absorb the full potential of entrepreneurship as collective action. Also missing is a collective stance on key entrepreneurship concepts such as opportunity discovery or construction and entrepreneurial agency. Accordingly, this article reviews and critiques five articles that constitute this Special Issue seeking to establish ‘entrepreneurship as collective action’ as the next frontier of entrepreneurship theory development. The articles in this Special Issue each investigate a specific instance of collective action in entrepreneurship. …

Regulating More?: Comparing Ireland's Original And Amended Lobbying Legislation, John Hogan

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This paper compares the amendments introduced by the Regulation of Lobbying and Oireachtas (Allowances to Members) (Amendment) Act 2023 with the original regulations of the Regulation of Lobbying Act 2015. The study was conducted using the Hired Guns Method for assessing the robustness of lobbying legislation, developed by the Centre for Public Integrity (CPI), allowing findings to be compared with lobbying regulations internationally. The 2015 legislation was introduced after years of tribunals, scandals, unfulfilled political promises, and economic crisis, in an effort to increase the public's trust in politicians, representative institutions, democracy and the wider bureaucracy. The 2023 Amendment came …

Framing A Feminist Phenomenological Inquiry Into The Lived Experiences Of Women Entrepreneurs, Edicleia Oliveira, Serge Basini, Thomas M. Cooney

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Purpose: This article aims to explore the potential of feminist phenomenology as a conceptual framework for advancing women's entrepreneurship research and the suitability of interpretative phenomenological analysis (IPA) to the proposed framework. Design/methodology/approach: The article critically examines the current state of women's entrepreneurship research regarding the institutional context and highlights the benefits of a shift towards feminist phenomenology. Findings: The prevailing disembodied and gender-neutral portrayal of entrepreneurship has resulted in an equivocal understanding of women's entrepreneurship and perpetuated a male-biased discourse within research and practice. By adopting a feminist phenomenological approach, this article argues for the importance of considering the …

A Review On Machine Learning Methods For Customer Churn Prediction And Recommendations For Business Practitioners, Awais Manzoor, M. Atif Qureshi, Etain Kidney, Luca Longo

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Due to market deregulation and globalisation, competitive environments in various sectors continuously evolve, leading to increased customer churn. Effectively anticipating and mitigating customer churn is vital for businesses to retain their customer base and sustain business growth. This research scrutinizes 212 published articles from 2015 to 2023, delving into customer churn prediction using machine learning methods. Distinctive in its scope, this work covers key stages of churn prediction models comprehensively, contrary to published reviews, which focus on some aspects of churn prediction, such as model development, feature engineering and model evaluation using traditional machine learning-based evaluation metrics. The review emphasises …