UC Research Repository
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The UC Research Repository collects, stores and makes available original research from postgraduate students, researchers and academics based at the University of Canterbury.
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Recent Submissions
Using Mathematics Curriculum Material when Planning on Practicum: A Case Study of one Primary Year Three Pre-Service Teacher
(MERGA, 2022) Wilson, Susanna; Fitzallen N; Murphy C; Vesife H; Maher N
This paper describes how one third and final year pre-service (PST) used curriculum materials when planning for primary mathematics teaching on practicum. The findings are drawn from a semi-structured focus group interview, where four PSTs recalled how they planned for primary teaching during a previous practicum. This case study shows how one PST used curriculum planning documents from the practicum setting, and a teacher’s guide when planning mathematics lessons. Planning processes are also identified, and implications for associate teachers (ATs), PSTs, and mathematics Initial Teacher Educators are discussed.
Optimising Tree Responses to Root Pruning in Mature Trees: An Introduction to Some New Research
(2023) Benson A; morgenroth, justin
Experimental Validation is Always Required for Molten Oxide Electrolysis Laboratory Crucibles
(Springer Science and Business Media LLC, 2024) Ford K; Marshall, Aaron; Watson, Matthew; Bishop, Catherine
Molten oxide electrolysis (MOE) is a promising electrochemical route to de-carbonize primary and secondary metal production. Developing MOE processes starts with laboratory experiments at temperatures > 1000∘C lasting ~10 hours and requiring long heating/cooling times to protect furnace hardware. Before investigating MOE processes, crucibles must be selected that tolerate the required temperatures while minimizing chemical interactions with the oxide to control melt contamination and contain the melt. Unfortunately no general procedure guiding MOE crucible selection is documented. Here we focus on laboratory crucibles in air for two MOE melts: titania-sodia at 1100∘C and neodymia-boria at 1300∘C . After shortlisting generic crucible materials using Ashby’s method, thermodynamic predictions were made for all-oxide titania-sodia charges using FactSage and cup test experiments were conducted on (i) all-oxide and carbonate charges for titania-sodia and (ii) neodymia-boria charges. While magnesia was predicted to be the best crucible for the titania-sodia melt, alumina was the best choice for both oxide and carbonate charges. The grain boundary networks of both magnesia and YSZ were infiltrated by the oxide and carbonate charges. Platinum was the best crucible for neodymia-boria melts. We show that compositional control during long, high-temperature MOE experiments requires experimental validation for specific chemistries every time.
The role of avalanche deposition on the mass balance of Rolleston Glacier, Arthur’s Pass, New Zealand
(2024) Spera , Alison; Purdie, Heather; Kerr , Tim; Rack , Wolfgang
Non-Fungible Programs: Private Full-Stack Applications for Web3
(2024) Regalia, Blake; Adams, Benjamin; Vallarano N; Tessone CJ
The greatest advantage that Web3 applications offer over Web 2.0 is the evolution
of the data access layer. Opaque, centralized services that compelled trust from users are
replaced by trustless, decentralized systems of smart contracts. However, the public nature
of blockchain-based databases, on which smart contracts transact, has typically presented
a challenge for applications that depend on data privacy or that rely on participants having
incomplete information. This has changed with the introduction of confidential smart contract
networks that encrypt the memory state of active contracts as well as their databases stored
on-chain. With confidentiality, contracts can more readily implement novel interaction mechanisms that were previously infeasible. Meanwhile, in both Web 2.0 and Web3 applications
the user interface continues to play a crucial role in translating user intent into actionable
requests. In many cases, developers have shifted intelligence and autonomy into the client-side,
leveraging Web technologies for compute, graphics, and networking. Web3’s reliance on such
frontends has revealed a pain point though, namely that decentralized applications are not
accessible to end users without a persistent host serving the application. Here we introduce the
Non-Fungible Program (NFP) model for developing self-contained frontend applications that
are distributed via blockchain, powered by Web technology, and backed by private databases
persisted in encrypted smart contracts. Access to frontend code, as well as backend services,
is controlled and guaranteed by smart contracts according to the NFT ownership model,
eliminating the need for a separate host. By extension, NFP applications bring interactivity to
token owners and enable new functionalities, such as authorization mechanisms for oracles,
supplementary Web services, and overlay networks in a secure manner. In addition to releasing
an open-source software development kit for building NFPs, we demonstrate the utility of
NFPs with an interactive Bayesian game implemented on Secret Network.