MITspace – The MELBOURNE INSTITUTE OF TECHNOLOGY’s Research Repository
The Melbourne Institute of Technology’s MITspace repository is an open access digital archive of research output and scholarship. MITspace provides free access to MIT’s scholarly work, including online full text versions of journal articles, conference papers, theses and other research output, where this is made possible by permission of the copyright owners. The repository archives and stores our staff and researcher's scholarship, conserving it, and making it discoverable and accessible for the future. MITspace is administered by the MIT Library team.
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Recent Submissions
RACHEIM: Reinforced Reliable Computing in Cloud by Ensuring Restricted Access Control
(MDPI AG, 2025-06-09) Saxena, Urvashi Rahul; Kadel, Rajan; Saxena, Urvashi; Kadel, Rajan
Cloud computing has witnessed rapid growth and notable technological progress in recent years. Nevertheless, it is still regarded as being in its early developmental phase, with substantial potential remaining to be explored—particularly through integration with emerging technologies such as the Metaverse, Augmented Reality (AR), and Virtual Reality (VR). As the number of service users increases, so does the demand for computational resources, leading data owners to outsource processing tasks to remote cloud servers. The internet-based delivery of cloud computing services consequently expands the attack surface and impacts the trust relationship between the service user and the service provider. To address these challenges, this study proposes a restricted access control framework based on homomorphic encryption (HE) and identity-based encryption (IBE) mechanisms. A formal analysis of the proposed model is also conducted under an unauthenticated communication model. Simulation results indicate that the proposed approach achieves a 20–40% reduction in encryption and decryption times, respectively, compared with existing state-of-the-art homomorphic encryption schemes. The simulation was performed using a 2048-bit key and data size, consistent with current industry standards, to improve key management efficiency. Additionally, the role-based hierarchy was implemented in a Salesforce cloud environment to ensure secure and restricted access control.
Test 2
(2025-06-19) White, S.
Assessing Environmental Benefits of Green Hydrogen Production from Sewage Treatment Plants Considering Solar PV PEM Electrolysis
(Elsevier BV, 2025-06) Barghash, Hind; AlRashdi, Zuhoor; Okedu, Kenneth E.; Hasoon, Feras N.; Okedu, Kenneth
The drive to reduce global warming through the mitigation of carbon emissions from fossil fuels is on the rise. Sewage Treatment Plants (STPs) contribute to Greenhouse Gases (GHGs) production. In order to achieve low GHGs emissions, this study presents two strategies for STPs. The first strategy involves generating hydrogen gas through Proton Exchange Membrane (PEM) electrolysis using treated effluent, while the second strategy is based on the adoption of a solar energy system. The study aims to conduct the Life Cycle Assessment (LCA) of the STPs to determine the effects of the source of energy on hydrogen gas production from wastewater. In addition, a LCA for the STPs was carried out using the OpenLCA software for hydrogen gas production via electrolysis and solar energy integration. The findings reveal that climate change impact, fossil fuel depletion, and human toxicity, would reduce by 14,800 kg CO2-Eq. Hydrogen production with solar energy integration exhibits considerable reduction in environmental consequences with considerable improvements in Human Toxicity (550.11 kg 1,4-DCB-Eq), Climate Change (2711.70 kg CO2-Eq), and Fossil Fuel Depletion (1541.11 kg oil-Eq). The solar-powered hydrogen production strategy demonstrates how STPs can help produce hydrogen in a more sustainable and eco-friendly way by lowering greenhouse gas emissions, and reducing dependency on fossil fuels. Based on the findings of this paper, employing solar energy to produce hydrogen from STPs is a viable and effective approach to less environmental hazards and sustainability of energy for major water treatment industries.
Effects of Age on Heart Rate Variability and Mental Workload while Driving with Secondary Tasks
(2024-12) Dutta, Rippon
This thesis examines the impact of age on Heart Rate Variability (HRV) and Mental Workload (MWL) during driving with secondary tasks—a key area in driver safety research. The study involved 40 participants from Melbourne’s western suburbs, stratified into three age groups:
young (18–29), middle-aged (30–59), and older adults (60+). Each participant took part in a controlled driving experiment using a 2017 Nissan X-Trail equipped with cruise control, driving through real-world routes that included a mix of traffic conditions at 60 and 70 km/h speed zones.
Participants engaged in six types of secondary tasks: hands-free phone calls, phone conversations, GPS address input, GPS address changes, talking with a passenger, and eating from a can. These tasks were selected to reflect common real-world distractions. HRV data were collected using a Polar H10 device connected to the Elite HRV app, offering physiological insights into autonomic nervous system activity. Subjective MWL was assessed using the NASA Task Load Index (NASA TLX), which measures six workload dimensions: mental, physical, and temporal demand, effort, performance, and frustration.
Findings revealed clear age-related differences. Older drivers experienced higher MWL and more physiological strain, particularly during complex tasks at higher speeds, indicating increased safety risks. Younger drivers showed greater multitasking ability, with more stable HRV and lower MWL. Middle-aged drivers displayed intermediate results.
The study underscores the need for age-specific interventions and vehicle technologies—like automated GPS systems and adaptive alert systems—to minimize manual and cognitive distractions. It also calls for policies that consider age-related cognitive and physiological
limitations to promote safer driving.
Conducted under real-world conditions, this research significantly contributes to human factors in transportation by offering evidence-based strategies to reduce risks and support adaptive, safer driving environments across age groups