Open Journal Systems at the Victoria University of Wellington Library
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Surveying .NZ TLS
Get PDFThe Internet serves as a critical platform for exchanging sensitive information, encompassing businesses such as banks, online stores, and government agencies that routinely transmit and receive personal data over the Web. Ensuring the security of this information is of paramount importance. The security protocols Transport Layer Security (TLS) and its predecessor, Secure Sockets Layer (SSL), play a vital role in securing the modern web. These protocols implement various security measures to ensure the confidentiality, integrity, and authenticity of the data exchanged between web browsers and web servers. Nonetheless, the improper configuration and implementation of TLS/SSL protocols on web servers can introduce security vulnerabilities, potentially compromising user privacy and security. This paper contains the results and conclusions derived from a comprehensive survey of TLS/SSL configurations among websites registered under the .nz top-level domain name. The project evaluated the current TLS/SSL configurations in place and compared them with the latest web security standards and best practices. The findings provide valuable insights into the security posture of websites within the .nz domain, highlighting potential risks, vulnerabilities, and areas of concern. By doing so, we contribute to the broader understanding of web security best practices and help businesses and individuals make informed decisions to enhance the security of sensitive online data
Design, Fabrication & Testing of a Low-Power Electric Thruster for Nanosatellite Missions
Get PDFNanosatellites like the CubeSat standard provide low-cost and adaptable platforms for fast design iteration and enable the testing of new and disruptive technologies in space. Despite their merits, the nanosatellite platform imposes stringent mass and volumetric limitations, which has typically seen such missions constrained to passive, Low Earth orbit missions. However, these previously accepted limitations of small spacecraft are being actively challenged by recent developments in miniaturized electric propulsion technology. Electric thrusters deliver low thrust compared to traditional chemical rockets but provide distinct advantages due to their highly efficient consumption of propellant. Advancements in electric propulsion is opening horizons for more ambitious nanosatellite in-orbit manoeuvres, advanced satellite constellation networks, and space exploration outside Earth's sphere of gravitational influence. Inspection of electric propulsion literature highlighted a distinct lack of understanding and developmental work on low-power, miniaturised electric thruster technology. Furthermore, the scalability and operational performance of these low-power thrusters has not been conclusively explored. Resultantly, there is an absence of efficient and reliable electric thrusters that can support ambitious nanosatellite missions. The work presented in this paper fills this gap in knowledge by first presenting a background on electric propulsion theory and thruster scaling, before outlining a thruster design methodology. Operational data from the artefact thruster and an evaluation of the system's performance against standard electric propulsion metrics like thrust, efficiency, and specific impulse is also presented
Ipipri Digital Trails: Augmented Reality
Get PDFAugmented reality is a growing technology about bridging the gap between the virtual world and the real world. Most people carry around a mobile phone that is equipped with a rear-facing camera and a touch screen. Augmented reality applications make use of the rear-facing camera to place virtual elements such as three-dimensional models into the physical environment. The Ipipri digital trails project is a larger project developed by the Russell Museum that aims to showcase Māori history in Kororāreka (now known as Russell). This project developed augmented reality elements that will enhance the experience of users by showcasing three-dimensional models that people can view anywhere. Augmented reality is a relatively new technology with many features being experimental, which comes with large trade-offs. The largest is speed versus accuracy. This project leans towards the speed side of this trade-off as the accurate placement of models was not a priority. The solution that was developed uses persistent ray casting to determine where in the physical environment should be the origin of the virtual scene. This allows for the instant placement of models into the virtual scene and then uses depth information to further refine the virtual scene. Along with the augmented reality elements the solution also includes a quick response (QR) code scanning system. This allows users to scan a code to choose which model is used for augmented reality. This project is important to help make learning the history and stories of Kororāreka more engaging by giving people a visual element that is hard to otherwise recreate
Semantic Incompleteness of del Cerro and Herzig's Hilbert System for a Combination of Classical and Intuitionistic Propositional Logic
Get PDFThis paper shows Hilbert system (C+J)-, given by del Cerro and Herzig (1996) is semantically incomplete. This system is proposed as a proof theory for Kripke semantics for a combination of intuitionistic and classical propositional logic, which is obtained by adding the natural semantic clause of classical implication into intuitionistic Kripke semantics. Although Hilbert system (C+J)- contains intuitionistic modus ponens as a rule, it does not contain classical modus ponens. This paper gives an argument ensuring that the system (C+J)- is semantically incomplete because of the absence of classical modus ponens. Our method is based on the logic of paradox, which is a paraconsistent logic proposed by Priest (1979)
Modular labelled calculi for relevant logics
Get PDFIn this article, we perform a detailed proof theoretic investigation of a wide number of relevant logics by employing the well-established methodology of labelled sequent calculi to build our intended systems. At the semantic level, we will characterise relevant logics by employing reduced Routley-Meyer models, namely, relational structures with a ternary relation between worlds along with a unique distinct element considered as the real (or actual) world. This paper realizes the idea of building a variety of modular labelled calculi by reflecting, at the syntactic level, semantic informations taken from reduced Routley-Meyer models. Central results include proofs of soundness and completeness, as well as a proof of cut- admissibility
'A man of few words’: A.D. McGavock, Director of Forests, New Zealand State Forest Service, 1931 to 1939
Get PDFAlexander McGavock was Director of Forests from 1931 to 1939 but remains comparatively unknown in comparison to his predecessor and successor. Using valedictory and obituary observations as a guide, aspects of McGavock’s early career in Lands and Survey and later move to the State Forest Service are scrutinised in order to better appreciate his impact as Director of Forests
Creating system change to improve schooling outcomes in Aotearoa New Zealand
Get PDFRecent history of schooling in Aotearoa New Zealand has seen ongoing efforts to achieve improvement in learning outcomes, and particularly reduction in the inequity of outcomes between different groups of learners, without significant sustained progress. Over recent decades the literature on schooling system improvement has increasingly identified key factors that have contributed to improved learning outcomes in systems where this has been achieved. An assessment of Aotearoa New Zealand’s experience against both the “what” and the “how” of effective system improvement suggests that the Aotearoa New Zealand experience aligns with some, but not all, of the identified aspects of successful change. This points to areas for greater focus and new approaches to change management in order to achieve sustained improvement in learning outcomes in the future
Promises and challenges for effective school and system leadership
Get PDFRepositioning school and system leadership was at the heart of the Tomorrow’s Schools Independent Taskforce recommendations in 2019 to tackle the longstanding and worsening issues of equity in our schooling system. This commentary traverses the current situation and moves towards improvement, in relation to the continuing challenges to ensure effective and sustainable school leadership in all of the country’s 2,306 schools, and government frameworks and support for school leadership
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