Digital Commons Network^™

Contextualising Hotel Career Behaviour: Testing A Sociocultural And Organizational Career Model, Franklin Akosa, Songshan (Sam) Huang, Hossein Ali Abadi, Jun Wen

Research outputs 2022 to 2026

This study applies Social Cognitive Career Theory (SCCT) to develop and empirically test a contextual model of hotel career outcomes in Ghana, focusing on how social and organizational factors shape employees' career attitudes and intentions. Drawing on survey data from 769 frontline hotel employees, Partial Least Squares Structural Equation Modeling (PLS-SEM) was employed to assess both the measurement and structural models. The results reveal that subjective norms significantly and positively influence career attitudes. Transformational leadership not only strengthens employees' career attitudes and intentions but also moderates the relationship between subjective norms and career attitudes, amplifying their positive effect. Additionally, favourable …

Diagnostic Accuracy Of Electrocardiogram Algorithms For Differentiating Left From Right Outflow Tract Ventricular Arrhythmia: A Systematic Review And Network Meta-Analysis, Zhuoqiao He, Ming Liu, Pengxiang Ying, Manshu Song, Xuerui Tan

Research outputs 2022 to 2026

Background: Accurate pre-Ablation differentiation between left (LVOT) and right (RVOT) ventricular outflow tract arrhythmias (OTVAs) using ECG algorithms is essential for decision on vascular access and treatment strategy. However, the most reliable ECG algorithm remains unclear. We conducted a systematic review and network meta-Analysis (NMA) to compare the diagnostic accuracy of available algorithms. Methods: We searched MEDLINE, EMBASE and Cochrane databases through 7 May 2025 for studies evaluating ECG algorithms against ablation-confirmed OTVA origin. A Bayesian diagnostic test accuracy NMA was performed to estimate pooled sensitivity, specificity, diagnostic odds ratios (DORs) and a superiority index (S) for each algorithm. Study …

Reducing Methamphetamine Use In Aboriginal And Torres Strait Islander Communities With The “We Can Do This” Web App: Qualitative Evaluation Of Acceptability And Feasibility, Leda Sivak, Rachel Reilly, Shani Crumpen, Carla Treloar, Rebecca Mcketin, Julia Butt, Yvette Roe, Nadine Ezard, Brendan Quinn, Jack Nagle, Wade Longbottom, Clifford Warrior, James Ward

Research outputs 2022 to 2026

Background: Preventing and treating methamphetamine-related harm in Aboriginal and Torres Strait Islander populations is a significant challenge for health care services. Digital health care may offer opportunities to support individuals and families in ways that complement existing methamphetamine treatment options. This study responds to a community-identified priority as Aboriginal Community Controlled Health Services identified methamphetamine use as a key concern and sought support to respond to the needs of people who use methamphetamine and their families. Objective: This paper reports on a process evaluation of the web application’s acceptability and feasibility when used by clients and clinicians in residential rehabilitation …

Genai’S Impact On Global It Management: A Multi-Expert Perspective And Research Agenda, Yogesh K. Dwivedi, Laurie Hughes, Mohammad S. Al-Ahmadi, Vincent Dutot, Syed Q. Ahmed, Shahriar Akter, Rahul De’, Keyao Li, Nitish Singh, Paul Walton

Research outputs 2022 to 2026

Generative AI (GenAI) is disrupting global IT management and challenging established practice. The increasing use of GenAI technology is redefining localization, transforming existing workforce roles, outsourcing strategy, and team dynamics. Simultaneously, GenAI’s security complexities have prompted the rethinking of existing risk frameworks to meet a new set of challenges from GenAI enhanced cyber threats. This article explores these complex and converging factors, providing a roadmap to address GenAI’s significant impact on global IT management. We advocate the responsible adoption of GenAI and importance of building resilient, value-driven, globally consistent IT ecosystems able to adapt to the significant challenges and opportunities …

Why Do Schools Continue To Use Between-Class Ability Grouping?, Olivia Johnston, Nerida Spina, Suzanne Macqueen, Rebecca Spooner-Lane

Research outputs 2022 to 2026

Allocating students into separate classes within a school depending on their “ability” is common in many countries. This paper presents a theoretical discussion of the practice, considering why it persists despite a long history of research emphasizing consequential problems. Our discussion identifies and critiques four possible reasons that between-class ability grouping is being used in schools again today, despite research advising against the practice. These reasons are: 1) educators’ perspectives that it facilitates differentiation and assists in managing the intensification of teaching; 2) advantages for students in “high ability” and “low ability” classes; 3) cultural acceptability; and 4) historical entrenchment, …

A Pollutant’S Tale: An Interactive Talk On The Chemistry Of The Earth’S Climate And Its Response To Pollutants, Timothy G. Harrison, Michael T. Davies-Coleman, Alison C. Rivett, M. Anwar H. Khan, Joyce D. Sewry, Magdalena Wajrak, Nicholas M. Barker, Jonny Furze, Sophie D. Franklin, Linda Sellou, Naomi K.R. Shallcross, Dudley E. Shallcross

Research outputs 2022 to 2026

A Pollutant’s Tale and its primary school version, Gases in the Air, are two talks that have been developed and modified over the last ca. 18 years, that provide audiences from approximately 4-90 years old with the background to the composition of the Earth’s lower atmosphere, the Earth’s climate, and the impact of air pollution. In this article, we describe the content of the talks and provide videos of each experiment individually as well as a recorded performance of both talks to an empty auditorium. In this article, we discuss ways that the talk can be further developed and its …

Co-Designing A Children's Transition Charter For The Transition To School: Opening Participatory Spaces To Hear Children's Voices, Lennie Barblett, Leanne Lavina, Fiona Boylan, Amelia Ruscoe

Research outputs 2022 to 2026

This project sought to gather the voices of young children to investigate whether a co-development process could be used to develop a transition to school charter with children and their teachers. Children's experiences of the transition to school can have far-reaching effects on their continuing educational journey. Seven teachers from the early years of school and 52 children (3–5 years) participated in the project over a school year. Participatory action research framed the study, which utilised child-centred methods for children to describe their dreams, hopes and aspirations of what school would be like and how their transition could be improved. …

Does Capital Structure Mediate The Relationship Between Corporate Governance Compliance And Firm Performance? Empirical Evidence From Pakistan, Irfan Haider Shakri, Jaime Yong, Erwei Xiang

Research outputs 2022 to 2026

Purpose: The purpose of this study is to examine how capital structure mediates the effects of corporate governance (CG) compliance on firm performance (FP) in the context of a developing market experiencing significant reforms to its governance landscape. Design/methodology/approach: An index was built to measure firm-level compliance with Pakistan’s code of CG. Several robustness checks were performed, including alternate proxies of dependent and independent variables, using additional control variables and considering the Global Financial Crisis period. To address dynamic effects and endogeneity, several identification strategies were used: a leading dependent variable, fixed effects model, generalised method of moments model and …

Explosions Are Always Entertaining But…: Investigating The Impacts Of Science Shows On High School Students, Shanii Phillips, Miriam Sullivan, Ann Grand

Research outputs 2022 to 2026

Science shows are often posited as a route to encourage young people to engage with science. Using a mixed methods approach, our research investigated the impact of attending a science show on high school students’ intentions to study science or pursue a career in science. We found that while a single visit to a science show has little impact on students’ aspirations, it can reinforce students’ confidence in their ability to succeed in science. In terms of design and performance, the best-received shows included ‘real-world’ content that students could identify as relevant to their lives.

Improving Mental Health Referral Systems In Rural Australia: Co-Design Study With Health Professionals And Consumers, Kate Bartel, Asini Malinka Siriwardene, Paul Worley, Kim Pearce, Niranjan Bidargaddi, Bronwin Patrickson, Simon Moody, Sharon Wingard, Martin Jones, Brian Mckenny, Darryl Cameron, Sharon Lawn, Amy E. Mendham

Research outputs 2022 to 2026

Background: In rural Australia, geographical isolation, limited resources, and complex health care navigation create significant barriers to mental health care access. Mental health care professionals and organizations often work in segregation, exacerbating existing barriers. Digital technology provides an opportunity to improve communication between providers and streamline workflows while supporting a diverse range of consumers. Objective: This co-design study aimed to identify rural community needs and explore digital solutions to enhance mental health service delivery pathways. Methods: Using a design-thinking methodology, we conducted focus groups and workshops with 17 participants (7 consumers and caregivers and 10 health care professionals) from a …

Motivation Matters: The Positive Influence Of Parental Involvement On Children’S Writing Outcome, Bronte Kelso-Marsh, Anabela Abreu Malpique, Helen Davis, Debora Similieana Valcan

Research outputs 2022 to 2026

Theoretical models and empirical evidence suggest parental involvement in general education is beneficial for children’s educational outcomes and that motivational factors may contribute to explaining parental involvement in children’s education. Few studies, however, have examined the role of parental involvement in children’s writing outcomes and, to our knowledge, none has investigated the motivations of Parents/Carers to support their children’s writing development in the first place. In this study, we aimed to address this gap by measuring Parents'/Carers' autonomous and controlled motivations for supporting their children’s writing at home and their engagement in writing activities with their children, and then assessing …

Risk Management, Internal Audit Function, And Corporate Performance, Ahmad Saiful Azlin Puteh Salin, Zubaidah Ismail, Malcolm Smith, Suryani Abdul Raman, Norliana Omar, Siti Marlia Shamsudin

Research outputs 2022 to 2026

The purpose of this study is to determine the relationship between risk management practices and the internal audit function with the performance of companies. It is interesting to examine how competitive advantage can be achieved when the company is able to face and adapt to a complex business environment via robust risk management practices and an internal audit function. This study uses archival analysis on the annual report of the top 500 publicly listed companies in Bursa Malaysia, which represent approximately 65 percent of the total market capitalization. Both independent variables, namely risk management and internal audit function, are measured …

Truth Telling And The “Lead Splinter”: Aboriginal Elders’ Perspectives On Community Service Provision And Intergenerational Trauma, Janelle Caddy, Eyal Gringart, Darren Garvey

Research outputs 2022 to 2026

This article is based on PhD research aimed at improving community services for remote Aboriginal people with intergenerational trauma. It focuses on the role that Yamatji Aboriginal Elders played in cocreating a framework to enhance service provision for Aboriginal clients and the importance of local truth telling in this endeavour. Elders specified that local truth telling was essential in building shared understandings of healing from intergenerational trauma between Aboriginal people and community service providers. The characterisation of intergenerational trauma as a “lead splinter”, continually poisoning the wellbeing of Aboriginal people provided an illustration of trauma and the complexities of facilitating …

3d Engineered Scaffolds Of Conjugated Polymers/Metal Organic Frameworks For Biomedical Applications, Amin Hosseini Sharifabad, Roham Ghanbari, Mohammad Reza Saeb, Ehsan Nazarzadeh Zare, Filippo Rossi, Mehdi Salami-Kalajahi, Pooyan Makvandi

Research outputs 2022 to 2026

The extracellular matrix can be replicated by 3D scaffolds, providing a favorable environment for cell growth, proliferation, and differentiation. Despite their biocompatibility, biodegradability, and bioactivity, the poor mechanical strength of 3D scaffolds limits their use for heavy loads. This creates a bottleneck in the supply of scaffolds with enhanced mechanical strength and all the previously mentioned characteristics. Conjugated polymers have emerged as a promising option for 3D scaffold construction due to their electrical conductivity, adjustable surface qualities, and ability to transfer bioactive molecules. Moreover, metal-organic frameworks (MOFs) are a rapidly emerging class of nanomaterials due to their uniform porosity, excellent …

The Effect Of Robot Anthropomorphism On Employee Recovery Of Robot Service Failures: The Mediation Of Employee Empathy, Jiangchi Zhang, Chaowu Xie, Songshan Huang

Research outputs 2022 to 2026

Purpose: This study aims to investigate employee responses to robot service failures. It examines how employees recover from such failures at varying levels of robot anthropomorphism, considering the mediating role of employee empathy and the moderating role of service failure type. Design/methodology/approach: Three scenario-based experiments were designed and implemented. The statistical analysis techniques adopted were independent samples t-test, multivariate analysis of variance and regression. Findings: Findings reveal: a curvilinear relationship exists between employee proactive/reactive recovery and robot anthropomorphism; employee empathy mediates this relationship; and physical affordance failures prompt low proactive and high reactive recovery for low-anthropomorphism robots, while cognitive affordance …

Distinct Contributions Of Cerebrospinal Fluid Biomarkers To Cognitive Impairment And Neuropsychiatric Symptoms In Young-Onset Dementia, Wei Hsuan Chiu, Anita M.Y. Goh, Dhamidhu Eratne, Charles B. Malpas, Matthew J.Y. Kang, Wendy Kelso, Mark Walterfang, Dennis Velakoulis, Samantha M. Loi

Research outputs 2022 to 2026

Objective: Young-onset dementia (YOD), defined by symptom onset before age 65, encompasses diverse aetiologies and presents with prominent neuropsychiatric symptoms (NPS) that often accompany or exacerbate cognitive decline. However, the pathological mechanisms linking NPS, cognition, and biomarkers remain unclear. It was hypothesised that relationships between NPS and cognition would be mediated or moderated by cerebrospinal fluid (CSF) biomarker levels in individuals with YOD. Methods: This retrospective, cross-sectional study included 46 participants with YOD (24 with Alzheimer's disease [AD], 22 with non-AD dementias) diagnosed at the Neuropsychiatry Centre, Royal Melbourne Hospital. NPS were measured using the Depression Anxiety and Stress Scale …

Integrated Sensing And Covert Communications With Ris Adaptive And Non-Adaptive Modes, Jia Zhang, Dengfeng Zhang, Ke Liu, Jiande Sun, Min Li, Shihao Yan

Research outputs 2022 to 2026

In this work, we consider an integrated sensing and covert communication (ISACC) system with a finite blocklength L aided by a reconfigurable intelligent surface (RIS) with N elements. Specifically, with the aid of RIS, a transmitter Alice is to sense the potential existence of a target, and she is also probabilistically trying to send information to a receiver Bob covertly (i.e., trying to hide her transmissions from a warden Willie). Meanwhile, Willie is to detect whether Alice is sensing the target only or conducting ISACC. We consider two RIS operation modes, i.e., a non-adaptive mode, where RIS employs a common …

Geomorphic And Sedimentary Impact On Beaches Of Eastern Visayas (Philippines) After Typhoon Haiyan In 2013 – Short-Term Recovery And Post-Depositional Changes, Eva Quix, Max Engel, Fabian Boesl, Lia A.L. Gonzalo, Francesca V. Llanes, Mark A.C Bahala, Rodrigo C. Eco, Jan A.M. Galang, Dominik Brill, S. Matthias May, Helmut Brückner

Research outputs 2022 to 2026

Tropical cyclones and storm surges are a major threat to coastal communities of the Philippines. On 08th November 2013, category 5 Typhoon Haiyan (local name: Yolanda) made landfall on the islands of Eastern Visayas and caused more than 6000 casualties and severe damage to infrastructure and habitats. To assess the geomorphic impact of one of the strongest tropical cyclones on record, three post-typhoon surveys were conducted in 2014, 2015 and 2016 at two severely affected sites on the islands of Leyte and Samar. They aimed at documenting Haiyan-related erosional features and sand deposits. The sites have different geomorphic and geological …

Sorghum And Sorghum-Based Products: Nutritional Composition, Prebiotic Potential And Health Benefits In Gut Microbiota Interactions, W. M.A.D.Binosha Fernando, Rasheed A. Abdulraheem, Kalmee Pramoda Kariyawasam, Amal Sudaraka Samarasinghe, W. M.Kendrea T. Fernando, Hannah Barnes, Malina Robertson, D. P.W. Jayatunga, B. G.D.N.K. De Silva, Vijay Jayasena

Research outputs 2022 to 2026

Sorghum (Sorghum bicolor L.) is a member of the Poaceae family and is the fifth most important crop globally. Sorghum grains (SGs) are rich in health-promoting macro- and micronutrients and phytochemicals. SGs are commonly consumed as food or as ingredients in food, especially in African countries. Therefore, food products such as ogi, bread and flour have been and are still being developed from SGs to provide nutritional and health benefits. However, the nutritional and prebiotic potential of SGs, especially the pigment pericarps, has not been fully exploited. This review describes micronutrients in different varieties of sorghum and the health benefits …

Sources Of Underwater Noise, Christine Erbe, Alec J. Duncan, Alexander Gavrilov, Montserrat Landero, Robert D. Mccauley, Iain Parnum, Evgeny Sidenko, Chandra Salgado-Kent, Evgeny Sidenko

Research outputs 2022 to 2026

The marine soundscape, whether in coastal areas or the deepest ocean, in the tropics or at the poles, contains a myriad of sounds. Sounds may be grouped by their origin into geophony (e.g., wind, precipitation, waves, earthquakes, volcanoes, and ice), biophony (e.g., invertebrates, fishes, and marine mammals), and anthropophony (e.g., port construction, mineral and hydrocarbon exploration and production, renewable energy installation, and shipping). This chapter gives a brief overview of the geophony and biophony, and then focuses on the anthropophony. The sounds of boats and ships of various types, marine seismic surveys, drilling, dredging, pile driving, windfarms, geotechnical site investigations, …

Provenance Of The Uppermost Carboniferous–Lower Triassic Sandstones, Bogda Mountains, Nw China: Implications On The Late Paleozoic Tectonic History Of The Southern Central Asian Orogenic Belt, Sixuan Wu

Doctoral Dissertations

"The Permian-Triassic period represents a significant but insufficiently understood tectonic transition stage in the southern Central Asian Orogenic Belt (CAOB) between the Paleozoic continental amalgamation and Cenozoic orogenic reactivation. This study integrates fieldwork, petrographic, and detrital zircon geochronological data to document the trend of depositional environments, framework grain compositions, and dates of detrital zircon grains of the uppermost Carboniferous–Lower Triassic sandstones from three study areas in Bogda Mountains, the greater Turpan-Junggar basin, NW China, to decipher the spatial and temporal changes in the provenance lithology and area and reconstruct the unroofing history of the southern CAOB.

In the first part …

Power Supply Induced Jitter Analysis In High-Speed Drivers, Yifan Ding

Doctoral Dissertations

The Input/Output Buffer Information Specification (IBIS) model faces challenges in accurately simulating power-supply-induced jitter (PSIJ), particularly under nonlinear and time-varying power noise conditions with pre-driver stages. This work introduces advancements in IBIS model modification algorithms to enhance PSIJ simulation accuracy for high-speed drivers.

First, a correction coefficient-based approach was developed to adjust switching coefficients K_pu and K_pd using pre-driver DC jitter sensitivity, significantly improving model robustness under DC and AC power noise. However, its effectiveness diminished under large noise amplitudes due to coefficient shape dominance.

To address this, a simplified algorithm bypassed correction coefficient, directly correlating switching transitions with jitter …

Applying Human System Integration Principles To The Investigation, Design And Validation Of Interventions For Self-Escape In Underground Mines, Eugene Adubofour Gyawu

Doctoral Dissertations

This dissertation investigates the use of human systems integration (HSI) to develop technologies for miners’ self-escape during a mine emergency, addressing barriers that compromise miner safety during emergencies.

Recognizing the inherently hazardous nature of underground mining, this study has three core objectives: (1) assessing miners' perceptions of proposed self-escape interventions, (2) designing interventions based on these insights, and (3) validating their effectiveness using experimental testing. This work evaluates self-escape interventions for both coal and metal/non-metal miners using scenario-based surveys, information design reviews, label designs and experimental testing methods varying across three distinct studies.

Results reveal that miners identified improvements to …

Implication And Applications Of Machine Learning On Biomedical Images, Jason Hagerty

Doctoral Dissertations

Medical imaging ranges in modality including computer tomography imaging, x-ray imaging, digital microscopy, and macro-focus dermoscopy images. The latter two modalities are the focus of the presented work.

To perform a diagnostic evaluation on the captured dermoscopy image, it begins with what is usually a labor-intensive operation that requires an expert to perform the initial segmentation for localizing a region of interest (ROI). Once that ROI is obtained, a physician with years of training and experience will observe biological markers that can be used to visually differentiate whether a lesion is benign or malignant. A similar process is used for …

Development Of Dual-Scan Nuclear Magnetic Resonance (Nmr) Pulse Programs For Spin-Lattice Relaxation Measurements, Zachary Mayes

Doctoral Dissertations

This research develops and refines the Split Inversion Pulse and Recovery (SIP R) methodology for spin-lattice relaxation (T₁) measurements in NMR spectroscopy. SIP R introduces a two-scan difference technique using a split inversion pulse sequence, where the 180° pulse is split into two 90° pulses phase-shifted with respect to each other. This approach simplifies data fitting, requiring only two parameters to extract T₁ values, compared to the traditional inversion-recovery method, which needs three. The SIP-R-DS and SIP-R-S adaptations extend this framework by incorporating selective NMR resonance excitations, enhancing its applicability to cross-polarization experiments and enabling unobstructed NOE measurements. These adaptations …

Experimental Study Of Defects In Coaxial Wire-Based Laser Metal Deposition, Remy Mathenia

Doctoral Dissertations

This work seeks to improve the usability and capability of coaxial wire-based laser metal deposition (LMD) through the experimental study of process parameters on output geometry, directional effects, and defect formation. Wire-based LMD is a directed energy deposition (DED) strategy that uses a focused laser heat source to melt and fuse metal wire as it is deposited. This process is used to build parts layer-by-layer until a desired geometry is accomplished. LMD enables the creation of complex components at a high build rate with low material and energy waste. This work focuses on the deposition of titanium wire in the …

Evaluating And Relaxing The Limits On Flexural Reinforcement Ratio Of Masonry Shear Walls, Tousif Mahmood

Doctoral Dissertations

Reinforced masonry shear walls (RMSWs), essential for lateral and out-of-plane load-resisting systems in modern construction are constrained by TMS 402/602 code limits on reinforcement ratios ("ρ" _"max" ) and axial compressive stresses (≤10% of masonry compressive strength, f_m^'), undermining masonry’s inherent compression capacity under high axial loads. This dissertation investigates the seismic performance of reinforced masonry shear walls (RMSWs) subjected to high axial compressive stresses (10–20% of f_m^'), with a focus on walls violating the maximum reinforcement ratio ("ρ" _"max") and axial load limits of TMS 402-22. Through experimental testing of 30 large-scale fully grouted (FG) and partially grouted (PG) …

Systematic Esd Analysis And Modeling For Electronic Device, Zhekun Peng

Doctoral Dissertations

Systematic ESD analysis provides good pre-compliance to ESD robustness evaluation on the electronic device from device level to component/system level to on-chip level. The whole process involves corona discharge on display, system level ESD analysis on PCB for race condition and transient response and 3D IC package impact to on-die ESD.

ESD to the display cover glass can damage touchscreen traces by sparkless corona discharges on the glass surface. A non-linear time dependent transmission-line model is proposed to model corona streamer propagation in terms of the coupling current and propagation speed. Results are highly promising to model the corona discharge …

Mid-Field Shock And Impulse Estimation Methods For Blast Loading On Tall Targets, Ethan Allan Steward

Doctoral Dissertations

Blast resistant structural design continues to be a major research area for governments around the world due to explosive threats from both state and non-state actors. Many of the typical targets of explosive attacks, such as government buildings, commercial high rise office buildings, and apartment complexes are mid to high-occupancy buildings that present a tall profile relative to the charge size and are often clad in curtain walls. In blast resistant structural design, the origin of a shock wave is typically assumed to be in the far-field, creating a wave that is nearly planar and parallel to at least one …

Topics On Ai Fairness Preferences In Kidney Transplantation, Mukund Telukunta

Doctoral Dissertations

Modern kidney transplantation incorporates artificial intelligence (AI) decision-support systems which exhibit social discrimination due to biases inherited from training data. Although researchers have proposed various group-based fairness notions to assess biases in AI, it remains uncertain which criterion is most suitable for evaluating biases in such complex healthcare systems. This dissertation explores human perception of fairness to identify the most appropriate fairness criterion for assessing AI tools in kidney transplantation, focusing on the preferences of non-expert (e.g. public, patients) stakeholders. The study examines two distinct AI systems employed in kidney transplantation: a classification model and a regression model. Human subject …