18397 research outputs found
Sort by
Attack and defense towards backdoor in neural network
No full textThis research uncovers a critical security vulnerability in artificial intelligence: AI systems may be covertly manipulated under specific stealthy conditions to exhibit malicious behavior. The study achieves a breakthrough by developing a novel detection technique capable of identifying such threats within operational AI systems. The study further explores how these vulnerabilities arise in systems trained through multi-party collaboration and in systems using personal biometric signals for identity authentication. By exposing these dangers and proposing practical countermeasures, this research contributes to building more reliable and secure artificial intelligence technologies—technologies that are increasingly becoming indispensable components of critical safety applications in our daily lives.</p
Parents’ Perspectives on Australian Children’s Television in the Streaming Era – 3
No full textThis report presents findings from surveys and interviews carried out with parents and guardians of children aged 14 years and younger that took place over four years (2021-2024). Topics included screen viewing practices, the role of local children’s television, and valued SVOD features and functionality. 756 surveys were completed by parents and guardians and 27 interviews were conducted.</p
Migropessimism of the Intellect, Migro-Optimism of the Will: The Italian-Australian Experience
No full textFocusing on the Italian-Australian experience, this article outlines its authors’ migropessimism and their subsequent migro-optimism. We initially focus on what we perceive as the migrant’s ‘ontological death’. We will then follow unsuccessful attempts to carve a political space and more successful attempts to pursue spaces of personal autonomy. The immigrants to a settler society like Australia witness a settler colonial sovereignty that is asserted and yet remains defective. Conversely, they face an Indigenous sovereignty that is denied and yet endures. This witnessing confirms that for migrants to settler colonial countries sovereignty is always someone else’s. For Indigenous peoples and for settlers, in their relational opposition, sovereignty is political life; for migrants, sovereignty is like the Epicurean death: they will never encounter it. If migrants are, then sovereignty is elsewhere, since they have already left. And if sovereignty is, then the migrants are no longer, since they have become settlers.</p
Understanding and Responding Effectively to Online Child Exploitation: A Qualitative Exploration of Offending Aetiology and Processes
No full textInternational research has documented ongoing increases in online child sexual exploitation (OCSE), with methods of offending often shifting as new technological systems and online platforms are developed. A gap includes the need for further qualitative research to better understand the motivations and underlying psychological drivers involved in OCSE offences.This thesis describes the psychological drivers of modern OCSE offending. Using a qualitative approach, the study examined the offending pathways and underlying psychological drivers of 17 individuals convicted of OCSE offences and serving custodial sentences in Victoria. Findings indicated multifaceted offending pathways across participants with different OCSE offences. </p
Processability of Bindered Dry-Fibre Tapes in Ultrasonic Spot Welding and Double Diaphragm Forming for High-Volume Manufacturing
No full textThis thesis addresses the growing demand for reliable, cost-efficient carbon fibre composite manufacturing by investigating automated preforming of unidirectional bindered dry-fibre tapes. Ultrasonic Spot Welding was validated as a fast, repeatable, low-energy method for tape fixation in automated tape placement, with tape characteristics and processing conditions affecting lap shear strength and preform quality. Double Diaphragm Forming was investigated as a near-net-shape, resource-efficient forming technique, focusing on tape friction, interface behaviour, and bridging mitigation. Collectively, these findings provide novel insights into material selection and forming optimisation, supporting high-volume sequential dry-fibre tape preforming for lightweight aerospace and automotive structures.</p
Data-Driven Quality Assurance of the Dry Fibre Tape Laying Process
No full textThis dissertation addresses the high labour intensity of carbon fibre composite production in the aerospace sector by advancing the Automated Dry Fibre Tape Placement process. It introduces a comprehensive quality definition by examining how gaps, overlaps, and undulations affect the material's mechanical properties. Furthermore, a real-time monitoring system employing laser triangulation and deep learning evaluation for accurate defect detection was developed to enable immediate corrective feedback. A novel training method for the neural network-based evaluation algorithm reduces data requirements while maintaining high performance. These innovations support cost-efficient, high-quality manufacturing of lightweight composite materials.</p
Deciding Not to Decide: The Role of AI Surrogate Shoppers in Voice Commerce
No full textThis research explores how artificial intelligence voice assistants help people shop. It finds that these digital helpers make shopping easier by saving time and providing good value. The study shows that for everyday items, finding a good deal is most important, while for bigger purchases, saving time matters more. This work helps companies design better voice shopping experiences that fit how customers actually make decisions, ultimately making voice shopping easier and more satisfying for everyone.</p
Information-Constrained Platooning Control of Connected Automated Vehicles
No full textThe rapid growth of vehicle use has created serious traffic congestion, safety risks, and environmental concerns. This thesis explores how future connected automated vehicles can travel together safely and efficiently in groups, even when facing cyber threats, communication interruptions, and limited network capacity. By developing advanced control and communication strategies that maintain stability, privacy, and energy efficiency under real-world constraints, the research provides a pathway toward safer, more reliable, and more sustainable intelligent transportation systems that can benefit both drivers and the wider community.</p
Use of generative artificial intelligence in the youth sector: a scoping review protocol
No full textAcross Australia and internationally, youth sector organisations, including youth justice, out-of-home care, mental health, and community services, are beginning to adopt generative artificial intelligence (genAI) tools to assist with communication, documentation, triage, education, and service design. While these systems promise efficiency and innovation, they also introduce ethical and governance challenges. This scoping review will map and describe how generative AI is being used across youth sector contexts and assess the extent to which these uses align with governance frameworks, such as Australia’s AI Ethics Principles.</p
Topology Optimization of Photonic Crystals and Topological Insulators
No full textThis research develops a systematic method to generate photonic crystals, which are periodic microstructures that can control light. Using advanced optimization algorithm, smooth two-dimensional designs with improved ability to block or guide light are created. These designs are then used to build special materials called photonic topological insulators, which can trap and direct energy in highly controlled ways. The outcomes provide a systematic path for creating new light-controlling structures, with potential benefits for future technologies such as energy-efficient devices, sensors, and faster communication systems.</p