Provost - Research Publications

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    Flex-Net: A Graph Neural Network Approach to Resource Management in Flexible Duplex Networks
    Perera, T ; Atapattu, S ; Fang, Y ; Dharmawansa, P ; Evans, J (IEEE, 2023)
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    Frequency Permutations for Joint Radar and Communications
    Senanayake, R ; Smith, PJ ; Han, T ; Evans, J ; Moran, W ; Evans, R (IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC, 2022-11-01)
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    Design and Analysis of Hardware-Limited Non-Uniform Task-Based Quantizers
    Bernardo, NI ; Zhu, J ; Eldar, YC ; Evans, J (IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC, 2023)
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    Capacity Bounds for One-Bit MIMO Gaussian Channels With Analog Combining
    Bernardo, NI ; Zhu, J ; Eldar, YC ; Evans, J (IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC, 2022-11-01)
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    On the Capacity-Achieving Input of Channels With Phase Quantization
    Bernardo, NI ; Zhu, J ; Evans, J (IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC, 2022-09-01)
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    Optimum Reconfigurable Intelligent Surface Selection for Wireless Networks
    Fang, Y ; Atapattu, S ; Inaltekin, H ; Evans, J (IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC, 2022-09)
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    On the Capacity-Achieving Input of the Gaussian Channel With Polar Quantization
    Bernardo, NI ; Zhu, J ; Evans, J (IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC, 2022-09-01)
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    Combined Radar and Communications With Phase-Modulated Frequency Permutations
    Han, T ; Senanayake, R ; Smith, P ; Evans, J ; Moran, W ; Evans, R (IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC, 2023)
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    Physical-Layer Security in Full-Duplex Multi-Hop Multi-User Wireless Network With Relay Selection
    Atapattu, S ; Ross, N ; Jing, Y ; He, Y ; Evans, JS (IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC, 2019-02-01)
    This paper investigates the relay selection (RS) problem for multi-hop full-duplex relay networks where multiple source-destination (SD) pairs compete for the same pool of relays, under the attack of multiple eavesdroppers. To enhance the physical-layer security, within a given coherence time, our objective is to jointly assign the available relays at each hop to different SD pairs to maximize the minimum secrecy rate among all pairs. Two RS schemes, optimal RS and suboptimal RS (SRS), are proposed for two-hop networks based on global channel state information (CSI) and only SD pairs CSI, respectively. Since all users can communicate within the same coherence time, our joint RS schemes are important for the user-fairness and ultra-reliable low-latency communications. To evaluate the performance, the exact secrecy outage probability of the SRS scheme is derived under two residual self-interference models. The asymptotic analysis shows that the SRS scheme achieves full diversity. A relay-based jamming scheme is also proposed by using unassigned relays for user communications. Finally, the two-hop RS schemes and the analysis are extended to the general multi-hop network with multiple eavesdroppers. The numerical results reveal interesting fundamental trends where the proposed schemes can significantly enhance the secrecy performance.
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    Toward assessment for playful learning in early childhood: Influences on teachers' science assessment practices
    Guarrella, C ; van Driel, J ; Cohrssen, C (WILEY, 2023-03)
    Abstract In many countries, play is the vehicle for teaching and learning, requiring early childhood teachers to recognize and assess children's demonstrations of knowledge and capabilities as they are displayed during play. In the context of science learning, assessing what children know already, referred to as “assessment for learning,” equips teachers with the knowledge required to make purposeful decisions during these playful experiences and guide children's science process skill development while following their interests. Consistent evidence since the introduction of national quality standards in Australia has identified a need to strengthen teacher capabilities in assessment. This research investigated teachers' assessment practices, and the influences on these practices, during the implementation of a suite of playful science experiences in long day care and preschool settings in the Northern Territory (NT), Australia. Teachers were introduced to the NT Preschool Science Games and were supported to apply an assessment tool designed for the observation and development of science process skills. Adopting a multiple case study approach, semistructured interviews from three cases were thematically analyzed. Our findings demonstrate that despite having specific tools to support assessment for learning these were inconsistently applied. Thematic analysis of semistructured interviews revealed that assessment practice was influenced by contextual influences, affective responses and teaching practice. Unpacking these themes further, we identified that following children's interests was associated with the absence of systematic assessment of scientific thinking to inform planning for learning within the informal curriculum. To support teacher practice in early childhood science, and promote the assessment of children's capabilities within playful learning, we propose a model of Assessment for playful learning.