Digital Commons Network^™

Resilient Placement Of Vnfs And Distributed Mano Components In A Wmn-Based Nfv Infrastructure, G Frick, U Trick, A Lehmann, B Ghita

School of Engineering, Computing and Mathematics

No abstract provided.

Performance Of An Adaptive Aggregation Mechanism In A Noisy Wlan Downlink Mu-Mimo Channel, Lemlem Kassa, Mark Davis, Jianhua Deng, Jingye Cai

Articles

This paper investigates an adaptive frame aggregation technique in the medium access control (MAC) layer for the Wireless Local Area Network (WALN) downlink Multi-User–Multiple-In Multiple-Out (MU-MIMO) channel. In tackling the challenges of heterogeneous traffic demand among spatial streams, we proposed a new adaptive aggregation algorithm which has a superior performance over the baseline First-in–First-Out (FIFO) scheme in terms of system throughput performance and channel utilization. However, this earlier work does not consider the effects of wireless channel error. In addressing the limitations of this work, this study contributes an enhanced version of the earlier model considering the effect of channel …

Portfolio Optimisation Using Genetic Algorithms And Copula Financial Models, Tahani Alotaibi

School of Engineering, Computing and Mathematics Theses

Portfolio optimisation aims to efficiently find optimal proportions of portfolio assets, given certain constraints, and has been well-studied (Jin et al. 2016). While portfolio optimisation ascertains asset combinations most suited to investor requirements, numerous real-world problems impact its simplicity, e.g., investor preferences. Trading restrictions are also commonly faced, and must be met. However, in adding constraints to Markowitz’s basic mean-variance model, problem complexity increases, causing difficulties for exact optimisation approaches to find large problem solutions inside reasonable timeframes. The concern of this study concern is portfolio optimisation under three real-world constraints, using Markowitz’s mean-variance portfolio optimisation problem to obtain optimal …

Tackling Big Data Variety Using Metadata, Georgios Vranopoulos

School of Engineering, Computing and Mathematics Theses

The creation of new knowledge from manipulating and analysing existing knowledge is one of the primary objectives of any cognitive system. Out of the Big Data governing Vs, namely Volume, Velocity, Variety, Veracity, Validity, Volatility and Value, the first three are considered the primary ones. Most of the effort on Big Data research has been focussed upon Volume and Velocity, while Variety, “the ugly duckling” of Big Data, is often neglected and difficult to solve. A principal challenge with Variety is being able to understand and comprehend the data in gaining insight. Organisations have been investing in analytics relying on …

Design Processes For User Engagement With Mobile Health: A Systematic Review, Tochukwu Ikwunne, Lucy Hederman, P. J. Wall

Research Outputs: 2025-Present

Despite the importance of user engagement in mHealth system efficacy, many such interventions fail to engage their users effectively. This paper provides a systematic review of 10 years of research (32 articles) on mHealth design interventions conducted between 2011 and 2020. The PRISMA (Preferred Reporting Items for Systematic Reviews and Meta-Analyses) model was used for this review with the IEEE, Medline EBSCO Host, ACM, and Springer databases searched for English language papers with the published range. The goal of this review was to find out which design process improves user engagement with mHealth in order to guide the development of …

Physical Modelling Of Wave Group Interactions With A Vertical Wall, William Mortimer

School of Engineering, Computing and Mathematics Theses

Coastal communities are becoming increasingly exposed to wave-induced flood events due to climate change. Accurate prediction of wave-structure interactions are vital in order to achieve long lasting and economical defences for such communities. Amongst the interactions of importance for design are wave runup and force. This thesis describes data from experiments in laboratory flumes. The novel contribution is with application and validation of second-order wave generation for experiments in shallow to intermediate water depth. The thesis builds on a substantial body of work by coastal engineers to validate focused wave groups, established in offshore engineering, for coastal experiments. Free error …

Flexible Goal-Directed Manipulation Of Representations: Computational Models Of Healthy And Pathological Human Cognition, Giovanni Granato

School of Engineering, Computing and Mathematics Theses

The brain is able to manipulate itself, adapting its internal world in a changing environment. In particular it continuously manipulates its representations to achieve goals. This competence is supported by many neurocognitive high-order processes that interact during the performance of a goal-directed behaviour (e.g. attention processes, executive functions, motivational systems). Overall, adult humans often face a new problem trough a change of the `perceptual point of view' (i.e. a representational change), rather then an extended research of the correct action to perform. On the other hand, infants and children contemporary develop motor competence and task-directed perceptual representations (e.g. categorical perception). …

Consumer Reactions To Alcohol Advertising Health Warnings In Ireland: An Experimental Research Study, Vania Filipova

Doctoral

Introduction and Aims As part of several measures to inform consumers about the health risks of alcohol and reduce alcohol consumption, the Irish Government signed into law the Public Health (Alcohol) Act 2018, with Section 13 requiring the implementation of multiple health warnings in all alcohol ads. While health warnings on product labels have been subject to intensive political discussion and academic research, health warnings in alcohol ads have received little attention and empirical support. This doctoral dissertation investigates whether health warnings in alcohol ads can promote cognitive and affective reactions in consumers. Furthermore, this thesis also examines whether the …

Heritage Requires Citizens’ Knowledge: The Cost Place-Making Action And Responsible Research, Heike Oevermann, Ayse Erek, Carola Hein, Conor Horan, Kata Krasznahorkai, Ida Sofie Gøtzsche Lange, Edmond Manahasa, Marijke Martin, Marluci Menezes, Matej Nikšič, Paulina Polko, Juli Székely, Simone Tappert, Pekka Tuominen

Research Outputs: 2025-Present

This chapter reflects on responsible science with an eye toward concrete research practice. To this end, we briefly introduce the RRI paradigm (Responsible Research and Innovation) and then highlight seven EU research projects in the context of a transnational COST Action project. This COST Action will investigate how placemaking activities, like public art, civil urban design, and local knowledge production, reshape and reinvent public space, and improve citizens’ involvement in urban planning and urban design, especially in the context of heritage sites. The chapter introduces heritage case studies that either contrast, differentiate, and add to existing knowledge and practices in …

Peripheral: Women's Imprisonment In Twentieth Century Ireland, Christina Quinlan

Research Outputs: 2025-Present

No abstract provided.

An Exploratory Case Study Into Understanding Teaching Practice And Towards Enhancing Transformative Learning And Graduate Employability At Tu Dublin, Ellen Kampinga

Masters

This research focuses on understanding and enhancing the educational practice towards using pedagogies like transformative learning to enhance graduate employability at a new technological university, TU Dublin, during the coronavirus (COVID-19) pandemic. It was found that teaching practice depends significantly on the lecturer, the discipline area, the graduate skills that are sought after in each module and discipline, and the context of the delivery. The PAGE (Pedagogy Assisting Graduate Employability) framework developed from this research, aims to visualise the connection between the teaching process, pedagogy, and graduate employability. Application of the framework will offer insight into how each unique lecturer …

A Worked Example Of Braun And Clarke’S Approach To Refexive Thematic Analysis, David Byrne

Articles

Since the publication of their inaugural paper on the topic in 2006, Braun and Clarke’s approach has arguably become one of the most thoroughly delineated methods of conducting thematic analysis (TA). However, confusion persists as to how to implement this specifc approach to TA appropriately. The authors themselves have identifed that many researchers who purport to adhere to this approach—and who reference their work as such—fail to adhere fully to the principles of ‘refexive thematic analysis’ (RTA). Over the course of numerous publications, Braun and Clarke have elaborated signifcantly upon the constitution of RTA and attempted to clarify numerous misconceptions …

Volume 31, Number 3, Winter 2022-23, Office Of Communications, Illinois Wesleyan University

Illinois Wesleyan University Magazine, 2018-present

VOLUME 31 | NUMBER 3 | Winter 2022-23

ON OUR COVER: Toni Tortorella ’21 sports the mark from the surgery that cured her cancer as a symbol of health advocacy and the support she received from family, friends, faculty and staff.

14 Guardian Angel When IWU nursing student and community leader Toni Tortorella ’21 was diagnosed with cancer, her family at home and school advocated for her health and her academic success. Now she’s a nurse at the hospital that cured her.

18 A Love Letter to IWU After a summer of storytelling about what makes Illinois Wesleyan a unique …

Quality Of Experience Assurance In Wireless Networks For Mpeg-4 Transmission, Mohd Najwan Md. Khambari

School of Engineering, Computing and Mathematics Theses

The evolution of IEEE 802.11 wireless local area network (WLAN) has emerged as the most preferred choice for organizations as well as end users and consumers to access the network, especially the Internet. Today, WLAN technology has becoming more mature and slowly taking over the job for information sharing which was once borne by wired networks. WLAN has not only been used to transfer data packets, but also multimedia packets that are more time sensitive. Given the nature of WLAN which is prone to interference, several challenges need to be encountered for WLAN to keep abreast with the ability of …

Wavecat Wave Energy Converter: Performance And Wave Field Interaction, James Allen

School of Engineering, Computing and Mathematics Theses

Wave Energy Converters (WECs) have been shown to offer a promising option for power generation. The WaveCat is a moored WEC design which uses wave overtopping discharge into a variable v-shaped hull, to generate electricity through low head turbines. Physical model tests of the WaveCat WEC were carried out at the University of Plymouth COAST Laboratory to determine the device reflection, transmission and absorption coefficients. 60° and 30° wedge angles were tested, where wedge angle is the angle between the two hulls. Motion response of the WaveCat model was also quantified. The device heave and pitch motions were simulated using …

Biosensing With Back-Gated Graphene Field Effect Transistors, Benjamin O'Driscoll

School of Engineering, Computing and Mathematics Theses

The widespread existence of the heavy metal lead in the environment is a severe threat to the health of humans. Lead is a neurotoxin that accumulates over time in the body restricting the cognitive, behavioural and psychological development of children. Since water is one exposure route for chemical hazards like Pb2+ it is envisioned that monitoring drinking water sources with low-cost, sensitive and field-suitable devices is one way that human exposure can be limited. Herein presents graphene field effect transistors (GFETs) functionalised with aptamers as bioreceptors, for the specific detection of Pb2+ ions in water. Functionalising GFETs with bioreceptors facilitates …

Development Of A Novel Antibacterial Silver Nanocoating To Reduce Nosocomial Infections, James Butler

School of Engineering, Computing and Mathematics Theses

Nosocomial infections (those that are hospital-acquired) lead to patient morbidity and mortality, and are further complicated by the growing problem of antimicrobial resistance. Wastewater plumbing systems (WPS) are bacterial reservoirs and vehicles for bacterial transmission. Sink traps form a barrier between users and the WPS, but breaches can lead to contamination and have been implicated in outbreaks of infections. This project sought to address the need for a novel antimicrobial nanocoating to reduce bacterial colonisation and biofilm formation in sink traps. A nanocoating was developed by embedding silver nanoparticles in a matrix of commercially-available and low-cost pipe cement, applied to …

Optimisation Of Wireless Disaster Telecommunication Network Based On Network Functions Virtualisation Under Special Consideration Of Energy Consumption, Auberlin Paguem Tchinda

School of Engineering, Computing and Mathematics Theses

A working communication network is a key element in saving human lives after a disaster event. However, analysis of past disaster events shows significant damage to common communication network infrastructures such as the mobile network or landline. Consequently, a new communication network (Emergency Communication Network (ECN)) must be established immediately after the disaster to support rescue operations (e.g., civil protection, police, and volunteers) and to enable communication between the affected people. The established network is subject to several requirements. These requirements can be divided into infrastructure and service requirements. Infrastructure requirements include rapid deployment of the communication network, complete coverage …

Behavioural Determinants Of Human And Planetary Health: The Role Of Nature Contact And Nature Connectedness., Leanne Martin

School of Psychology Theses

The benefits of natural environments for health and wellbeing are well-established, but less is known about their links human behaviour. This thesis presents a conceptual model proposing that increased contact with - and psychological connection to – nature will be associated with: a) a lower prevalence of health risk behaviours, and b) greater engagement with pro-environmental behaviours, via positive affect, negative affect, community cohesion and temporal discounting. Studies 1-3 used representative cross-sectional datasets to systematically investigate the associations between different types of nature contact, nature connectedness and behavioural outcomes. Study 4 used a bespoke cross-sectional survey to test the full …

Life-Cycle Assessment Of Non-Domestic Building Stocks: A Meta-Analysis Of Current Modelling Methods, Julian Bischoff, Aidan Duffy

Articles

Building stock models (BSMs) are essential for simulating the contributions of regional and national building sectors to climate change under different policy scenarios, and for identifying pathways to climate change mitigation. To date, BSMs have focused on the operational life-cycle impacts of domestic dwellings; there has been less emphasis either on non-domestic buildings (NDBs) or full life-cycle analysis. This paper provides a first review of the theory and practice of NDB stock modelling which considers life-cycle energy, emissions and costs. A meta-analysis of the literature was undertaken involving a structured search of relevant articles in key scientific repositories. 98 in-scope …

All-Optical Modulator Based On A Microfibre Coil Resonator Functionalized With Mxene, Pengfei Wang, Shi Li, Fengzi Ling, Gerald Farrell, Elfed Lewis, Yu Yin

Articles

A novel all-optical modulator based on a microfibre coil resonator (MCR) functionalized using MXene is reported. The MCR was manufactured by winding a tapered fibre on a polycarbonate (PC) resin cylinder with low refractive index to support the microfibre, which also forms a fluidic channel coil. The MXene dispersion was injected into the channel to allow the deposition of an MXene layer using a photodeposition process. The transmission spectra were tuned using a tunable laser with a centre wavelength of 1550 nm and the light-matter interaction resulting from the photo-thermal effect and MXene absorption provide the all-optical modulation in this …

A Micron-Range Displacement Sensor Based On Thermo-Optically Tuned Whispering Gallery Modes In A Microcapillary Resonator, Zhe Wang, Arun Kumar Mallik, Fangfang Wei, Zhuochen Wang, Anuradha Rout, Qiang Wu, Yuliya Semenova

Articles

A novel micron-range displacement sensor based on a whispering-gallery mode (WGM) microcapillary resonator filled with a ne matic liquid crystal (LC) and a magnetic nanoparticle- coated fiber half-taper is proposed and experimentally demonstrated. In the proposed device, the tip of a fiber half-taper coated with a thin layer of magnetic nanoparticles (MNPs) moves inside the LC-filled microcapillary resonator along its axis. The input end of the fiber half-taper is connected to a pump laser source and due to the thermo-optic effect within the MNPs, the fiber tip acts as point heat source increasing the temperature of the LC material in …

A Multimodal Framework For Supporting Academic Writer’S Perspectives, Practice And Performance, Roisin Donnelly, Ita Kennelly, Claire Mcavinia

Journal Articles

Supporting writing remains an important dimension to the work of academic developers particularly for early career academics and doctoral candidates. A small qualitative case study was undertaken on an academic writing module to explore participants’ needs and evaluate a new multimodal writing framework which sought to enhance publication opportunities while supporting the development of writing practice. The framework introduced the modes of reading, writing and reviewing as distinctive dimensions of the writing process and introduced practical activities to build participants’ confidence and skills working in each mode. It also prompted participants to acknowledge, adopt and shift between the perspectives of …

Exploring Pedagogic And Practical Intersections Of Academic Writing Support For Faculty In Higher Education, Roisin Donnelly, Maria-Jose Gonzalez

Journal Articles

This is a case study of Faculty perceptions of the nature and effectiveness of academic writing provision and practice in a university in Ireland. It is presented in tandem with a case study of student persecptions from an Academic Writing Centre and taken together, both discuss the pedagogical approach adopted by the two pan-university initiatives. The focus of this case study is a Professional Development module for Faculty designed with a dual purpose - to support them to develop their own professional writing for publication, and enabling them to use the same strategies to support and reinforce their students’ academic …

Exploring The Concept Of The Digital Educator During Covid-19, Ana Schalk, Claire Mcavinia, Pauline Rooney

Journal Articles

In this paper, we explore academic identity, specifically the identity of the educator in higher education and academics’ conceptualisations of the digital educator. We suggest that the concept of a digital educator is not only about technology, tools and uses. The context for this exploration is academics’ participation in an online professional development module, Digital Education, and the “pivot online” (Weller, 2020a) during campus closures caused by the COVID-19 pandemic in 2020. Through qualitative research, we explored participants’ sense of teaching identity, whether they had or have a concept of being a digital educator and the extent to which these …

Use And Awareness Of Heated Tobacco Products In Europe, Silvano Gallus, Alessandra Lugo, Xiaoqiu Liu, Elisa Borroni, Luke Clancy, Giuseppe Gorini, Maria José Lopez, Anna Odone, Krzysztof Przewozniak, Olena Tigova, Piet A. Van Den Brandt, Constantine Vardavas, Esteve Fernandez, Tackshs Project Investigators

Articles

Background: Heated tobacco products (HTP) are new forms of tobacco consumption with limited information available on their use among the general population. Our objective was to analyze the prevalence and associations of use of HTP across 11 countries in Europe.

Methods: Within the TackSHS Project, in 2017-2018 we conducted a cross-sectional study with information on HTP use in the following countries: Bulgaria, England, France, Germany, Greece, Italy, Latvia, Poland, Portugal, Romania and Spain. In each country, face-to-face interviews were performed on a representative sample of around 1,000 subjects aged ≥15 years, for a total of 10,839 subjects.

Results: Overall, 27.8% …

Educator Handbook For Designing Inclusive Entrepreneurship Courses In Higher Education, Deirdre Mcquillan, Sylvia Gavigan, Antonio Juan Briones, Iulia Clitan, Dimitra Milioni, Vlad Muresan, Panayiota Polykarpou

Books/Book Chapters

This handbook is developed for educators in entrepreneurship within universities and other higher education institutions. The aim of the handbook is to help underrepresented student groups within their courses. It is also useful for academics who want to develop entrepreneurship courses for specific minority groups. The notion of who underrepresented entrepreneurship students are may differ across institutions and across countries. At a global level, the OECD identifies six important cohorts: women, youth, seniors, the unemployed, immigrants, and people with disabilities (OECD, 2021)

Social Identity Processes Involved In The Acceptance And Collective Actions Regarding Large-Scale Energy Technologies: The Case Of Deep Geothermal Energy In Cornwall, Wales And Scotland., Francesca Ausilia Tirotto

School of Psychology Theses

Deep geothermal energy has been recognised as an important contributor to future energy demand. However, the development of renewable energy technologies has seen public disagreement hindering the implementation of such technologies. The present study investigated social dimensions underlying public acceptance of deep geothermal energy. Adopting a social identity approach, the present research consisted of four studies. The first was a qualitative study which aimed to understand which socio-psychological dimensions were relevant in the acceptance of the first deep geothermal energy plant in Cornwall, UK. Based on this study and existing theory, a theoretical framework was developed which identified two possible …

Unstacking The Matryoshka Nesting Doll: A Self-Study Of Playful Language Instruction For Adult Second Language Learners, Marine Pepanyan

Dissertations and Theses @ UNI

In the recent three decades teaching second language (L2) vocabulary has expanded from sentence-level morphosyntactic features and pragmatics to the promotion and advancement of Communicative Language Teaching (CLT). Nevertheless, the L2 instructors are constantly seeking alternative strategies for vocabulary teaching and assessment due to a superficial level of vocabulary memorization and lack of student engagement. As an instructor-practitioner, I undertook a self-study of the process of implementing Playful Language Instruction (PLI) of L2 vocabulary in an Intensive English Program. In this self-study I combined conceptual lenses of theories of play, CLT, and the Adult Learning Theory to examine how playful …

How Do We Use Creative And Personal Memories For Creative Communication?, Tyler Robert Montgomery

Dissertations and Theses @ UNI

Inspired by the author’s memories, KeyBoard Memories and You have the Right to Forget are two short stage plays exploring topics of identity, time, and justice. This thesis uses personal and creative memories to develop stories in the form of scripts. The thesis begins with an example of creative writing inspired by the author’s personal and creative memories and describes the purpose of the project before moving into a review of literature that explains what memories are, how they work, and the different types of memories. Then the method section describes the methods of journaling and scripting writing, and then …